U.S. patent application number 12/797349 was filed with the patent office on 2010-09-30 for anti-glypican 3 antibody.
This patent application is currently assigned to Chugai Seiyaku Kabushiki Kaisha. Invention is credited to Tomoyuki Igawa, Takahiro Ishiguro, Shigeto Kawai, Yasuko Kinoshita, Hiroko Konishi, Kiyotaka Nakano, Jun-Ichi Nezu, Izumi Sugo, Megumi Tanaka, Hiroyuki Tsunoda, Takeshi Yoshino.
Application Number | 20100248359 12/797349 |
Document ID | / |
Family ID | 35784028 |
Filed Date | 2010-09-30 |
United States Patent
Application |
20100248359 |
Kind Code |
A1 |
Nakano; Kiyotaka ; et
al. |
September 30, 2010 |
Anti-Glypican 3 Antibody
Abstract
An antibody capable of binding to a specific region of glypican
3, as well as a humanized antibody created based on that antibody
are disclosed. The anti-GPC3 antibody of the invention has a higher
ADCC activity and CDC activity compared with those of a
conventional antibody. The antibody of the present invention is
useful as a cell growth inhibitor, an anticancer agent and an agent
for diagnosis of cancers.
Inventors: |
Nakano; Kiyotaka; (Ibaraki,
JP) ; Yoshino; Takeshi; (Ibaraki, JP) ; Nezu;
Jun-Ichi; (Ibaraki, JP) ; Tsunoda; Hiroyuki;
(Ibaraki, JP) ; Igawa; Tomoyuki; (Shizuoka,
JP) ; Konishi; Hiroko; (Shizuoka, JP) ;
Tanaka; Megumi; (Shizuoka, JP) ; Sugo; Izumi;
(Shizuoka, JP) ; Kawai; Shigeto; (Kanagawa,
JP) ; Ishiguro; Takahiro; (Kanagawa, JP) ;
Kinoshita; Yasuko; (Kanagwa, JP) |
Correspondence
Address: |
FISH & RICHARDSON PC
P.O. BOX 1022
MINNEAPOLIS
MN
55440-1022
US
|
Assignee: |
Chugai Seiyaku Kabushiki
Kaisha
Tokyo
JP
|
Family ID: |
35784028 |
Appl. No.: |
12/797349 |
Filed: |
June 9, 2010 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10583795 |
Jun 21, 2006 |
7776329 |
|
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PCT/JP05/13103 |
Jul 8, 2005 |
|
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12797349 |
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Current U.S.
Class: |
435/325 ;
435/320.1; 536/23.53 |
Current CPC
Class: |
C07K 2317/34 20130101;
A61P 43/00 20180101; C07K 16/28 20130101; A61P 1/16 20180101; A61P
35/00 20180101; C07K 7/06 20130101; A61P 1/00 20180101; C07K 14/47
20130101; C07K 2317/732 20130101; C07K 2317/734 20130101; C07K
2317/92 20130101; C07K 2317/565 20130101; C07K 16/303 20130101;
C07K 2317/24 20130101 |
Class at
Publication: |
435/325 ;
536/23.53; 435/320.1 |
International
Class: |
C12N 5/10 20060101
C12N005/10; C07H 21/04 20060101 C07H021/04; C12N 15/63 20060101
C12N015/63 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 9, 2004 |
JP |
2004-203637 |
Claims
1. An isolated polynucleotide comprising a sequence that encodes an
antibody heavy chain variable region of any one of (1)-(7): (1) a
heavy chain variable region comprising the amino acid sequence set
forth in SEQ ID NO: 84; (2) a heavy chain variable region
comprising the amino acid sequence set forth in SEQ ID NO: 85; (3)
a heavy chain variable region comprising the amino acid sequence
set forth in SEQ ID NO: 86; (4) a heavy chain variable region
comprising the amino acid sequence set forth in SEQ ID NO: 87; (5)
a heavy chain variable region comprising the amino acid sequence
set forth in SEQ ID NO: 88; (6) a heavy chain variable region
comprising the amino acid sequence set forth in SEQ ID NO: 89; or
(7) a heavy chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 90.
2. The polynucleotide of claim 1, further comprising a sequence
that encodes an antibody light chain variable region comprising the
amino acid sequence set forth in SEQ ID NO:92.
3. An expression vector comprising the polynucleotide of claim
1.
4. A host cell comprising the polynucleotide of claim 1.
5. An isolated polynucleotide comprising a sequence that encodes an
antibody heavy chain variable region having CDRs 1, 2 and 3
comprising the amino acid sequence set forth in SEQ ID NO: 123, 124
and 125, respectively.
6. The polynucleotide of claim 5, wherein the antibody heavy chain
variable region is humanized.
7. An expression vector comprising the polynucleotide of claim
5.
8. A host cell comprising the polynucleotide of claim 5.
9. An isolated polynucleotide comprising a sequence that encodes an
antibody light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO:92.
10. An expression vector comprising the polynucleotide of claim
9.
11. A host cell comprising the polynucleotide of claim 9.
12. An isolated polynucleotide comprising a sequence that encodes
an antibody light chain variable region of any one of (1)-(16)
below: (1) a light chain variable region having CDRs 1, 2 and 3
comprising the amino acid sequence set forth in SEQ ID NO: 143, 144
and 158, respectively (2) a light chain variable region having CDRs
1, 2 and 3 comprising the amino acid sequence set forth in SEQ ID
NO: 174, 144 and 158, respectively; (3) a light chain variable
region having CDRs 1, 2 and 3 comprising the amino acid sequence
set forth in SEQ ID NO: 175, 144 and 158, respectively; (4) a light
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 176, 144 and 158,
respectively; (5) a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
177, 144 and 158, respectively; (6) a light chain variable region
having CDRs 1, 2 and 3 comprising the amino acid sequence set forth
in SEQ ID NO: 178, 144 and 158, respectively; (7) a light chain
variable region having CDRs 1, 2 and 3 comprising the amino acid
sequence set forth in SEQ ID NO: 179, 144 and 158, respectively;
(8) a light chain variable region having CDRs 1, 2 and 3 comprising
the amino acid sequence set forth in SEQ ID NO: 180, 144 and 158,
respectively; (9) a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
181, 144 and 158, respectively; (10) a light chain variable region
having CDRs 1, 2 and 3 comprising the amino acid sequence set forth
in SEQ ID NO: 182, 144 and 158, respectively; (11) a light chain
variable region having CDRs 1, 2 and 3 comprising the amino acid
sequence set forth in SEQ ID NO: 183, 144 and 158, respectively;
(12) a light chain variable region having CDRs 1, 2 and 3
comprising the amino acid sequence set forth in SEQ ID NO: 184, 144
and 158, respectively; (13) a light chain variable region having
CDRs 1, 2 and 3 comprising the amino acid sequence set forth in SEQ
ID NO: 185, 144, and 158, respectively; (14) a light chain variable
region having CDRs 1, 2 and 3 comprising the amino acid sequence
set forth in SEQ ID NO: 186, 144 and 158, respectively; (15) a
light chain variable region having CDRs 1, 2 and 3 comprising the
amino acid sequence set forth in SEQ ID NO: 187, 144 and 158,
respectively; and (16) a light chain variable region having CDRs 1,
2 and 3 comprising the amino acid sequence set forth in SEQ ID NO:
188, 144 and 158, respectively.
13. The polynucleotide of claim 12, wherein the antibody light
chain variable region is humanized.
14. An expression vector comprising the polynucleotide of claim
12.
15. The expression vector of claim 14, wherein the vector further
comprises a sequence that encodes an antibody heavy chain variable
region having CDRs 1, 2 and 3 comprising the amino acid sequence
set forth in SEQ ID NO: 123, 124 and 125, respectively.
16. A host cell comprising the polynucleotide of claim 12.
17. The host cell of claim 16, wherein the host cell further
comprises a polynucleotide comprising a sequence that encodes an
antibody heavy chain variable region having CDRs 1, 2 and 3
comprising the amino acid sequence set forth in SEQ ID NO: 123, 124
and 125, respectively.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a divisional of U.S. application Ser.
No. 10/583,795, filed Jun. 21, 2006, which is the National Stage of
International Application No. PCT/JP2005/013103, filed Jul. 8,
2005, which claims the benefit of Japanese Patent Application
Serial No. 2004-203637, filed on Jul. 9, 2004. The contents of the
prior applications are hereby incorporated by reference in their
entireties.
FIELD OF THE INVENTION
[0002] The present invention relates to an anti-glypican 3
antibody, a cell growth inhibitor and an anticancer agent
containing the antibody as an active ingredient.
BACKGROUND
[0003] Glypican 3 (GPC3) is one of the glypican family of heparan
sulfate proteoglycans that are present on cell surfaces. It is
suggested that GPC3 may be involved in cell division in development
or cancer cell growth, however, its function has not been well
elucidated yet.
[0004] It has been found that a certain type of antibody binding to
GPC3 has a cell growth-inhibiting activity via an
antibody-dependent cell-mediated cytotoxicity (ADCC) activity and a
complement-dependent cytotoxicity (CDC) activity (International
Patent Application WO 2003/000883). In addition, it has been
suggested that GPC3 is cleaved in vivo and secreted into blood as a
secreted form of GPC3, and the diagnosis of cancers may be possible
by using an antibody capable of detecting the secreted form of GPC3
(International Patent Applications WO 2004/022739, WO 03/100429 and
WO 2004/018667).
[0005] When developing an anticancer agent based on the
cytotoxicity activity of an antibody, it is preferred that the
antibody to be used has high ADCC activity or CDC activity.
Accordingly, an anti-GPC3 antibody having a high cytotoxicity
activity has been desired as an antibody recognizing GPC3.
[0006] An object of the present invention is to provide an
anti-GPC3 antibody having a higher ADCC activity and CDC activity
compared with those of a conventional antibody.
SUMMARY
[0007] The present inventors have succeeded in obtaining an
antibody having a higher cytotoxicity activity compared with that
of a conventional anti-glypican 3 antibody. Furthermore, they
analyzed epitopes for such an antibody and succeeded in determining
the regions on GPC 3 recognized by the antibody with a high
cytotoxicity activity.
[0008] In one aspect, the present invention provides an antibody
comprising a heavy chain variable region having CDRs 1, 2 and 3 of
any one of (1)-(12):
(1) CDR1 comprising the amino acid sequence set forth in SEQ ID NO:
123, CDR2 comprising the amino acid sequence set forth in SEQ ID
NO: 124, and CDR3 comprising the amino acid sequence set forth in
SEQ ID NO: 125; (2) CDR1 comprising the amino acid sequence set
forth in SEQ ID NO: 109, CDR2 comprising the amino acid sequence
set forth in SEQ ID NO: 110, and CDR3 comprising the amino acid
sequence set forth in SEQ ID NO: 111; (3) CDR1 comprising the amino
acid sequence set forth in SEQ ID NO: 106, CDR2 comprising the
amino acid sequence set forth in SEQ ID NO: 107, and CDR3
comprising the amino acid sequence set forth in SEQ ID NO: 108; (4)
CDR1 comprising the amino acid sequence set forth in SEQ ID NO:
132, CDR2 comprising the amino acid sequence set forth in SEQ ID
NO: 133, and CDR3 comprising the amino acid sequence set forth in
SEQ ID NO: 134; (5) CDR1 comprising the amino acid sequence set
forth in SEQ ID NO: 106, CDR2 comprising the amino acid sequence
set forth in SEQ ID NO: 135, and CDR3 comprising the amino acid
sequence set forth in SEQ ID NO: 136; (6) CDR1 comprising the amino
acid sequence set forth in SEQ ID NO: 126, CDR2 comprising the
amino acid sequence set forth in SEQ ID NO: 127, and CDR3
comprising the amino acid sequence set forth in SEQ ID NO: 128; (7)
CDR1 comprising the amino acid sequence set forth in SEQ ID NO:
129, CDR2 comprising the amino acid sequence set forth in SEQ ID
NO: 130, and CDR3 comprising the amino acid sequence set forth in
SEQ ID NO: 131; (8) CDR1 comprising the amino acid sequence set
forth in SEQ ID NO: 103, CDR2 comprising the amino acid sequence
set forth in SEQ ID NO: 104, and CDR3 comprising the amino acid
sequence set forth in SEQ ID NO: 105; (9) CDR1 comprising the amino
acid sequence set forth in SEQ ID NO: 118, CDR2 comprising the
amino acid sequence set forth in SEQ ID NO: 121, and CDR3
comprising the amino acid sequence set forth in SEQ ID NO: 122;
(10) CDR1 comprising the amino acid sequence set forth in SEQ ID
NO: 115, CDR2 comprising the amino acid sequence set forth in SEQ
ID NO: 116, and CDR3 comprising the amino acid sequence set forth
in SEQ ID NO: 117; (11) CDR1 comprising the amino acid sequence set
forth in SEQ ID NO: 112, CDR2 comprising the amino acid sequence
set forth in SEQ ID NO: 113, and CDR3 comprising the amino acid
sequence set forth in SEQ ID NO: 114; or (12) CDR1 comprising the
amino acid sequence set forth in SEQ ID NO: 118, CDR2 comprising
the amino acid sequence set forth in SEQ ID NO: 119, and CDR3
comprising the amino acid sequence set forth in SEQ ID NO: 120.
[0009] In another aspect, the invention provides an antibody
comprising a light chain variable region having CDRs 1, 2 and 3 of
any one of (1)-(13):
(1) CDR1 comprising the amino acid sequence set forth in SEQ ID NO:
143, CDR2 comprising the amino acid sequence set forth in SEQ ID
NO: 144, and CDR3 comprising the amino acid sequence set forth in
SEQ ID NO: 158; (2) CDR1 comprising the amino acid sequence set
forth in SEQ ID NO: 143, CDR2 comprising the amino acid sequence
set forth in SEQ ID NO: 144, and CDR3 comprising the amino acid
sequence set forth in SEQ ID NO: 145; (3) CDR1 comprising the amino
acid sequence set forth in SEQ ID NO: 140, CDR2 comprising the
amino acid sequence set forth in SEQ ID NO: 141, and CDR3
comprising the amino acid sequence set forth in SEQ ID NO: 142; (4)
CDR1 comprising the amino acid sequence set forth in SEQ ID NO:
167, CDR2 comprising the amino acid sequence set forth in SEQ ID
NO: 168, and CDR3 comprising the amino acid sequence set forth in
SEQ ID NO: 169; (5) CDR1 comprising the amino acid sequence set
forth in SEQ ID NO: 170, CDR2 comprising the amino acid sequence
set forth in SEQ ID NO: 144, and CDR3 comprising the amino acid
sequence set forth in SEQ ID NO: 171; (6) CDR1 comprising the amino
acid sequence set forth in SEQ ID NO: 159, CDR2 comprising the
amino acid sequence set forth in SEQ ID NO: 160, and CDR3
comprising the amino acid sequence set forth in SEQ ID NO: 161; (7)
CDR1 comprising the amino acid sequence set forth in SEQ ID NO:
162, CDR2 comprising the amino acid sequence set forth in SEQ ID
NO: 147, and CDR3 comprising the amino acid sequence set forth in
SEQ ID NO: 163; (8) CDR1 comprising the amino acid sequence set
forth in SEQ ID NO: 164, CDR2 comprising the amino acid sequence
set forth in SEQ ID NO: 165, and CDR3 comprising the amino acid
sequence set forth in SEQ ID NO: 166; (9) CDR1 comprising the amino
acid sequence set forth in SEQ ID NO: 137, CDR2 comprising the
amino acid sequence set forth in SEQ ID NO: 138, and CDR3
comprising the amino acid sequence set forth in SEQ ID NO: 139;
(10) CDR1 comprising the amino acid sequence set forth in SEQ ID
NO: 155, CDR2 comprising the amino acid sequence set forth in SEQ
ID NO: 156, and CDR3 comprising the amino acid sequence set forth
in SEQ ID NO: 157; (11) CDR1 comprising the amino acid sequence set
forth in SEQ ID NO: 149, CDR2 comprising the amino acid sequence
set forth in SEQ ID NO: 150, and CDR3 comprising the amino acid
sequence set forth in SEQ ID NO: 151; (12) CDR1 comprising the
amino acid sequence set forth in SEQ ID NO: 146, CDR2 comprising
the amino acid sequence set forth in SEQ ID NO: 147, and CDR3
comprising the amino acid sequence set forth in SEQ ID NO: 148; or
(13) CDR1 comprising the amino acid sequence set forth in SEQ ID
NO: 152, CDR2 comprising the amino acid sequence set forth in SEQ
ID NO: 153, and CDR3 comprising the amino acid sequence set forth
in SEQ ID NO: 154.
[0010] Preferably, the antibody of the invention is selected from
the group consisting of any one of (1)-(13):
(1) an antibody comprising a heavy chain variable region having
CDRs 1, 2 and 3 comprising the amino acid sequence set forth in SEQ
ID NO: 123, 124 and 125, respectively, and a light chain variable
region having CDRs 1, 2 and 3 comprising the amino acid sequence
set forth in SEQ ID NO: 143, 144 and 158, respectively; (2) an
antibody comprising a heavy chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
109, 110 and 111, respectively, and a light chain variable region
having CDRs 1, 2 and 3 comprising the amino acid sequence set forth
in SEQ ID NO: 143, 144 and 145, respectively; (3) an antibody
comprising a heavy chain variable region having CDRs 1, 2 and 3
comprising the amino acid sequence set forth in SEQ ID NO: 106, 107
and 108, respectively, and a light chain variable region having
CDRs 1, 2 and 3 comprising the amino acid sequence set forth in SEQ
ID NO: 140, 141 and 142, respectively; (4) an antibody comprising a
heavy chain variable region having CDRs 1, 2 and 3 comprising the
amino acid sequence set forth in SEQ ID NO: 132, 133 and 134,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
167, 168 and 169, respectively; (5) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 106, 135 and 136,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
170, 144 and 171, respectively; (6) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 126, 127 and 128,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
159, 160 and 161, respectively; (7) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 129, 130 and 131,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
162, 147 and 163, respectively; (8) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 129, 130 and 131,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
164, 165 and 166, respectively; (9) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 103, 104 and 105,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
137, 138 and 139, respectively; (10) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 118, 121 and 122,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
155, 156 and 157, respectively; (11) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 115, 116 and 117,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
149, 150 and 151, respectively; (12) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 112, 113 and 114,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
146, 147 and 148, respectively; and (13) an antibody comprising a
heavy chain variable region having CDRs 1, 2 and 3 comprising the
amino acid sequence set forth in SEQ ID NO: 118, 119 and 120,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
152, 153 and 154, respectively.
[0011] In another aspect, the invention provides an antibody having
a heavy chain variable region of any one of (1)-(7):
(1) a heavy chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 84; (2) a heavy chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
85; (3) a heavy chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 86; (4) a heavy chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
87; (5) a heavy chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 88; (6) a heavy chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
89; or (7) a heavy chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 90.
[0012] In another aspect, the invention provides an antibody having
a light chain variable region comprising the amino acid sequence
set forth in SEQ ID NO: 92.
[0013] Preferably, the antibody of the invention is selected from
the group consisting of the antibody of any one of (1)-(7):
(1) an antibody comprising a heavy chain variable region comprising
the amino acid sequence set forth in SEQ ID NO: 84 and a light
chain variable region comprising the amino acid sequence set forth
in SEQ ID NO: 92; (2) an antibody comprising a heavy chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
85 and a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 92; (3) an antibody comprising a
heavy chain variable region comprising the amino acid sequence set
forth in SEQ ID NO: 86 and a light chain variable region comprising
the amino acid sequence set forth in SEQ ID NO: 92; (4) an antibody
comprising a heavy chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 87 and a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
92; (5) an antibody comprising a heavy chain variable region
comprising the amino acid sequence set forth in SEQ ID NO: 88 and a
light chain variable region comprising the amino acid sequence set
forth in SEQ ID NO: 92; (6) an antibody comprising a heavy chain
variable region comprising the amino acid sequence set forth in SEQ
ID NO: 89 and a light chain variable region comprising the amino
acid sequence set forth in SEQ ID NO: 92; and (7) an antibody
comprising a heavy chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 90 and a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
92.
[0014] In another aspect, the invention provides an antibody
comprising a light chain variable region having CDRs 1, 2 and 3 of
any one of (1)-(15):
(1) CDR1 comprising the amino acid sequence set forth in SEQ ID NO:
174, CDR2 comprising the amino acid sequence set forth in SEQ ID
NO: 144, and CDR3 comprising the amino acid sequence set forth in
SEQ ID NO: 158; (2) CDR1 comprising the amino acid sequence set
forth in SEQ ID NO: 175, CDR2 comprising the amino acid sequence
set forth in SEQ ID NO: 144, and CDR3 comprising the amino acid
sequence set forth in SEQ ID NO: 158; (3) CDR1 comprising the amino
acid sequence set forth in SEQ ID NO: 176, CDR2 comprising the
amino acid sequence set forth in SEQ ID NO: 144, and CDR3
comprising the amino acid sequence set forth in SEQ ID NO: 158; (4)
CDR1 comprising the amino acid sequence set forth in SEQ ID NO:
177, CDR2 comprising the amino acid sequence set forth in SEQ ID
NO: 144, and CDR3 comprising the amino acid sequence set forth in
SEQ ID NO: 158; (5) CDR1 comprising the amino acid sequence set
forth in SEQ ID NO: 178, CDR2 comprising the amino acid sequence
set forth in SEQ ID NO: 144, and CDR3 comprising the amino acid
sequence set forth in SEQ ID NO: 158; (6) CDR1 comprising the amino
acid sequence set forth in SEQ ID NO: 179, CDR2 comprising the
amino acid sequence set forth in SEQ ID NO: 144, and CDR3
comprising the amino acid sequence set forth in SEQ ID NO: 158; (7)
CDR1 comprising the amino acid sequence set forth in SEQ ID NO:
180, CDR2 comprising the amino acid sequence set forth in SEQ ID
NO: 144, and CDR3 comprising the amino acid sequence set forth in
SEQ ID NO: 158; (8) CDR1 comprising the amino acid sequence set
forth in SEQ ID NO: 181, CDR2 comprising the amino acid sequence
set forth in SEQ ID NO: 144, and CDR3 comprising the amino acid
sequence set forth in SEQ ID NO: 158; (9) CDR1 comprising the amino
acid sequence set forth in SEQ ID NO: 182, CDR2 comprising the
amino acid sequence set forth in SEQ ID NO: 144, and CDR3
comprising the amino acid sequence set forth in SEQ ID NO: 158;
(10) CDR1 comprising the amino acid sequence set forth in SEQ ID
NO: 183, CDR2 comprising the amino acid sequence set forth in SEQ
ID NO: 144, and CDR3 comprising the amino acid sequence set forth
in SEQ ID NO: 158; (11) CDR1 comprising the amino acid sequence set
forth in SEQ ID NO: 184, CDR2 comprising the amino acid sequence
set forth in SEQ ID NO: 144, and CDR3 comprising the amino acid
sequence set forth in SEQ ID NO: 158; (12) CDR1 comprising the
amino acid sequence set forth in SEQ ID NO: 185, CDR2 comprising
the amino acid sequence set forth in SEQ ID NO: 144, and CDR3
comprising the amino acid sequence set forth in SEQ ID NO: 158;
(13) CDR1 comprising the amino acid sequence set forth in SEQ ID
NO: 186, CDR2 comprising the amino acid sequence set forth in SEQ
ID NO: 144, and CDR3 comprising the amino acid sequence set forth
in SEQ ID NO: 158; (14) CDR1 comprising the amino acid sequence set
forth in SEQ ID NO: 187, CDR2 comprising the amino acid sequence
set forth in SEQ ID NO: 144, and CDR3 comprising the amino acid
sequence set forth in SEQ ID NO: 158; or (15) CDR1 comprising the
amino acid sequence set forth in SEQ ID NO: 188, CDR2 comprising
the amino acid sequence set forth in SEQ ID NO: 144, and CDR3
comprising the amino acid sequence set forth in SEQ ID NO: 158.
[0015] In another aspect, the invention provides an antibody
selected from the group consisting of the antibody of (1)-(15):
(1) an antibody comprising a heavy chain variable region having
CDRs 1, 2 and 3 comprising the amino acid sequence set forth in SEQ
ID NO: 123, 124 and 125, respectively, and a light chain variable
region having CDRs 1, 2 and 3 comprising the amino acid sequence
set forth in SEQ ID NO: 174, 144 and 158, respectively; (2) an
antibody comprising a heavy chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
123, 124 and 125, respectively, and a light chain variable region
having CDRs 1, 2 and 3 comprising the amino acid sequence set forth
in SEQ ID NO: 175, 144 and 158, respectively; (3) an antibody
comprising a heavy chain variable region having CDRs 1, 2 and 3
comprising the amino acid sequence set forth in SEQ ID NO: 123, 124
and 125, respectively, and a light chain variable region having
CDRs 1, 2 and 3 comprising the amino acid sequence set forth in SEQ
ID NO: 176, 144 and 158, respectively; (4) an antibody comprising a
heavy chain variable region having CDRs 1, 2 and 3 comprising the
amino acid sequence set forth in SEQ ID NO: 123, 124 and 125,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
177, 144 and 158, respectively; (5) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 123, 124 and 125,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
178, 144 and 158, respectively; (6) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 123, 124 and 125,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
179, 144 and 158, respectively; (7) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 123, 124 and 125,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
180, 144 and 158, respectively; (8) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 123, 124 and 125,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
181, 144 and 158, respectively; (9) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 123, 124 and 125,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
182, 144 and 158, respectively; (10) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 123, 124 and 125,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
183, 144 and 158, respectively; (11) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 123, 124 and 125,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
184, 144 and 158, respectively; (12) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 123, 124, and 125,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
185, 144, and 158, respectively; (13) an antibody comprising a
heavy chain variable region having CDRs 1, 2 and 3 comprising the
amino acid sequence set forth in SEQ ID NO: 123, 124, and 125,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
186, 144 and 158, respectively; (14) an antibody comprising a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 123, 124 and 125,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
187, 144 and 158, respectively; and (15) an antibody comprising a
heavy chain variable region having CDRs 1, 2 and 3 comprising the
amino acid sequence set forth in SEQ ID NO: 123, 124 and 125,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
188, 144 and 158, respectively.
[0016] In further aspect, the invention provides an antibody having
a light chain variable region selected from (1)-(15):
(1) a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 191; (2) a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
192; (3) a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 193; (4) a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
194; (5) a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 195; (6) a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
196; (7) a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 197; (8) a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
198; (9) a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 199; (10) a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
200; (11) a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 201; (12) a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
202; (13) a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 203; (14) a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
204; and (15) a light chain variable region comprising the amino
acid sequence set forth in SEQ ID NO: 205.
[0017] In another aspect, the invention provides an antibody having
a light chain variable region selected from the group consisting of
(1)-(15):
(1) a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 191; (2) a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
192; (3) a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 193; (4) a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
194; (5) a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 195; (6) a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
196; (7) a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 197; (8) a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
198; (9) a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 199; (10) a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
200; (11) a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 201; (12) a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
202; (13) a light chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 203; (14) a light chain variable
region comprising the amino acid sequence set forth in SEQ ID NO:
204; and (15) a light chain variable region comprising the amino
acid sequence set forth in SEQ ID NO: 205; and a heavy chain
variable region selected from the group consisting of (1)-(7): (1)
a heavy chain variable region comprising the amino acid sequence
set forth in SEQ ID NO: 84; (2) a heavy chain variable region
comprising; the amino acid sequence set forth in SEQ ID NO: 85; (3)
a heavy chain variable region comprising the amino acid sequence
set forth in SEQ ID NO: 86; (4) a heavy chain variable region
comprising the amino acid sequence set forth in SEQ ID NO: 87; (5)
a heavy chain variable region comprising the amino acid sequence
set forth in SEQ ID NO: 88; (6) a heavy chain variable region
comprising the amino acid sequence set forth in SEQ ID NO: 89; and
(7) a heavy chain variable region comprising the amino acid
sequence set forth in SEQ ID NO: 90.
[0018] The heavy chain variable region, a light chain variable
region, and the amino acid sequence of the CDRs 1, 2 and 3, as well
as the SEQ ID NOs are summarized in the table below.
TABLE-US-00001 Antibody and variable regions SEQ ID NO M3C11 H 22
M13B3 H 23 M1E7 H 24 M3B8 H 25 M11F1 H 26 M19B11 H 27 M6B1 H 28
M18D4 H 29 M5B9 H 30 M10D2 H 31 L9G11 H 32 M3C11 L 44 M13B3 L 45
M1E7 L 46 M3B8 L 47 M11F1 L 48 M19B11 L 49 M6B1 L 50 M18D4 L 51
M5B9 L 52 M10D2 L 53 L9G11 L 54 GC199 H 60 GC202 H 61 GC33 H 62
GC179 H 63 GC194 H 64 GC199 L 71 GC202 L 72 GC33 L 73 GC179 L 74
GC194(1) L 75 GC194(2) L 76 GC33.ver.a H 84 GC33.ver.c H 85
GC33.ver.f H 86 GC33.ver.h H 87 GC33.ver.i H 88 GC33.ver.j H 89
GC33.ver.k H 90 GC33.ver.a L 92 M13B3(H) CDR1 103 CDR2 104 CDR3 105
M3B8(H) CDR1 106 CDR2 107 CDR3 108 M11F1(H) CDR1 109 CDR2 110 CDR3
111 M5B9(H) CDR1 112 CDR2 113 CDR3 114 M6B1(H) CDR1 115 CDR2 116
CDR3 117 M10D2(H) CDR1 118 CDR2 119 CDR3 120 L9G11(H) CDR1 118 CDR2
121 CDR3 122 GC33(H) CDR1 123 CDR2 124 CDR3 125 GC179(H) CDR1 126
CDR2 127 CDR3 128 GC194(H) CDR1 129 CDR2 130 CDR3 131 GC199(H) CDR1
132 CDR2 133 CDR3 134 GC202(H) CDR1 106 CDR2 135 CDR3 136 M13B3(L)
CDR1 137 CDR2 138 CDR3 139 M3B8(L) CDR1 140 CDR2 141 CDR3 142
M11F1(L) CDR1 143 CDR2 144 CDR3 145 M5B9(L) CDR1 146 CDR2 147 CDR3
148 M6B1(L) CDR1 149 CDR2 150 CDR3 151 M10D2(L) CDR1 152 CDR2 153
CDR3 154 L9G11(L) CDR1 155 CDR2 156 CDR3 157 GC33(L) CDR1 143 CDR2
144 CDR3 158 GC179(L) CDR1 159 CDR2 160 CDR3 161 GC194(L)1 CDR1 162
CDR2 147 CDR3 163 GC194(L)2 CDR1 164 CDR2 165 CDR3 166 GC199(L)
CDR1 167 CDR2 168 CDR3 169 GC202(L) CDR1 170 CDR2 144 CDR3 171
GC33(L) G34A 174 GC33(L) G34D 175 GC33(L) G34E 176 GC33(L) G34F 177
GC33(L) G34H 178 GC33(L) G34N 179 GC33(L) G34P 180 GC33(L) G34Q 181
GC33(L) G34I 182 GC33(L) G34K 183 GC33(L) G34L 184 GC33(L) G34V 185
GC33(L) G34W 186 GC33(L) G34Y 187 GC33(L) G34R 188
[0019] Also the invention features an antibody having an activity
equivalent to the activity of the antibody described above, wherein
one or more amino acid residues are substituted, deleted or added
and/or inserted from the amino acid sequences described above.
[0020] Preferably, the antibody of the invention is a humanized
antibody.
[0021] Thus, in another aspect, the invention provides a humanized
antibody capable of binding to glypican 3.
[0022] In further aspect, the invention provides an antibody
capable of binding to a peptide consisting of the sequence of the
amino acid residues 524-563 of glypican 3.
[0023] Preferably, the antibody of the invention is capable of
binding to a peptide consisting of the sequence of the amino acid
residues 537-563 of glypican 3. More preferably, the antibody of
the invention does not bind to a peptide consisting of the sequence
of the amino acid residues 550-563 of glypican 3.
[0024] Preferably, the antibody is capable of binding to a peptide
consisting of the sequence of the amino acid residues 544-553 of
glypican 3 or a peptide consisting of the sequence of the amino
acid residues 546-551 of glypican 3.
[0025] In still another aspect, the invention provides an antibody
capable of binding to an epitope to which a second antibody is
capable of binding, wherein said second antibody comprises a heavy
chain variable region having CDRs 1, 2 and 3 comprising the amino
acid sequence set forth in SEQ ID NO: 123, 124 and 125,
respectively, and a light chain variable region having CDRs 1, 2
and 3 comprising the amino acid sequence set forth in SEQ ID NO:
143, 144 and 158, respectively. Namely, the antibody of the
invention is capable of competing in binding to GPC3 with the
second antibody.
[0026] In a preferred embodiment, the antibody of the invention is
capable of binding to glypican 3 and has a high CDC activity
against a cell expressing glypican 3 and/or has a high ADCC
activity against a cell expressing glypican 3.
[0027] In another aspect, the invention provides a polynucleotide
coding for a heavy chain variable region or a light chain variable
region of the antibody of the invention.
[0028] Preferably, the polynucleotide of the invention has the
sequence set forth in SEQ ID NOs: 11-21, 33-43, 55-59, 65-70 and
77-83.
[0029] In still another aspect, the invention provides a
cell-growth inhibitor and an anticancer agent comprising as an
active ingredient the antibody of the invention. Preferably, the
anticancer agent of the invention is used for treatment of
hepatoma.
[0030] In further aspect, the invention provides a peptide
comprising the sequence of the amino acid residues 524-563 of
glypican 3, the sequence of the amino acid residues 537-563 of
glypican 3, the sequence of the amino acid residues 544-553 of
glypican 3 or the amino acid sequence of the amino acid residues
546-551 of glypican 3.
BRIEF DESCRIPTION OF THE DRAWINGS
[0031] FIG. 1 shows the binding activity of the anti-GPC3 antibody
to a CHO cell, a CHO cell expressing full-length GPC3, HepG2 and
HuH-7, which was evaluated by flow cytometry. M1E7 (solid line) and
M11F1 (dashed line) were used at a concentration of 5 .mu.g/mL,
respectively.
[0032] FIG. 2 is a table showing the results of epitope
classification by a competitive ELISA. The degrees of competitive
inhibition against the binding of the biotinylated anti-GPC3
antibody are indicated by percentage. The epitopes were classified
into 5 groups, a to e, according to the competitive inhibition
pattern.
[0033] FIG. 3 shows the results of evaluating by Western blotting
whether an anti-GPC3 antibody binds to the N-terminal fragment of
40 kDa of the soluble form of GPC3 core protein or to the
C-terminal fragment of 30 kDa thereof. It was found that L9G11
binds to the N-terminal fragment and M3C11 binds to the C-terminal
fragment.
[0034] FIG. 4 shows the results of detecting a secreted form of
GPC3 is present in the culture supernatant of HepG2 by a sandwich
ELISA. It was strongly detected with the combination of antibodies
that bind to the N-terminal fragment such as M6B1, M18D4 or M19B11,
and it was not strongly detected with an antibody that binds to the
C-terminal fragment such as M3C11, M13B3 or M3B8.
[0035] FIG. 5 shows the results of immunoprecipitation of the
culture supernatant of HepG2 with the use of an anti-GPC3 antibody
and detection of a secreted form of GPC3. The medium as a control
(lanes 1 and 3) and the culture supernatant of HepG2 (lanes 2 and
4) were immunoprecipitated using M1E7 (lanes 1 and 2) and M10D2
(lanes 3 and 4). Secretory GPC3 was detected by M10D2 that binds to
the N-terminal fragment.
[0036] FIG. 6 shows the results of analyzing the epitope of the
antibodies that bind to the C-terminal fragment of GPC3 by Western
blotting with the use of a fusion protein of the C-terminal peptide
of GPC3 and GST. The soluble form of GPC3 core protein (lane 1),
GST (lane 2), GC-1 (lane 3), GC-2 (lane 4), GC-3 (lane 5), GC-4
(lane 6) and GC-5 (lane 7) were subjected to SDS electrophoresis
under reducing conditions, and detected by Western blotting using
M3C11 and M11F1.
[0037] FIG. 7 shows the results of evaluating the CDC activity of
the anti-GPC3 mouse-human chimeric antibody to a CHO cell that
expresses GPC3.
[0038] FIG. 8 shows the results of evaluating the ADCC activity of
the anti-GPC3 mouse-human chimeric antibody to a CHO cell that
expresses GPC3 and HepG2.
[0039] FIG. 9 shows the results of evaluating the ADCC activity of
GC33 to a human hepatoma cell line, HuH-7, using a mouse bone
marrow-derived effector cell.
[0040] FIG. 10 shows the results of evaluating the antitumor
activity of GC33 antibody to a mouse model transplanted with human
hepatoma.
[0041] FIG. 11 shows the results of evaluating the CDC activity of
the mouse-human chimeric antibody GC33 to a CHO cell that expresses
GPC3.
[0042] FIG. 12 shows the results of evaluating the ADCC activity of
the mouse-human chimeric antibody GC33 to HepG2.
[0043] FIG. 13 shows GPC3-derived sequences contained in GST-fusion
proteins (GC-4, 5, 6, 7, 8, 9, 11, 12, 13 and 14) prepared for
analyzing the epitope of GC33.
[0044] FIG. 14 shows the results of Western blotting with the use
of GC33 after separating GST, GC-7, 8, 9, 11, 12, 13 and 14 by
SDS-PAGE under reducing conditions.
[0045] FIG. 15 shows the results of evaluating the binding activity
of humanized GC33 to GPC3 by an ELISA.
[0046] FIG. 16 shows an antibody panel which summarizes isotypes
and the results of an ELISA, BIAcore, FACS, an epitope analysis and
an immunoprecipitation test for clones derived from a mouse
immunized with a soluble form of GPC3.
[0047] FIG. 17 shows an antibody panel in which isotypes and the
results of an ELISA, FACS and an epitope analysis for clones
derived from a mouse immunized with GC-3 are summarized.
[0048] FIG. 18 shows the results of evaluating the binding activity
of the modified antibodies to the soluble form of GPC3 core protein
by an ELISA. Gly34 located at CDR1 in a humanized GC33 L chain
variable region was replaced with any of 17 amino acids other than
Cys and Met.
[0049] FIG. 19 shows the results of evaluating the CDC activity of
the mouse-human chimeric antibodies GC33, M3C11, and M1E7 to a CHO
cell that expresses full-length GPC3.
[0050] FIG. 20 shows the results of evaluating the ADCC activity of
the mouse-human chimeric antibodies GC33, M3C11, and M1E7 to a
human hepatoma cell line SK-03 that expresses full-length GPC3.
DETAILED DESCRIPTION
Antibody
[0051] The present invention provides antibodies described in the
following (I) to (XI).
(I) An antibody containing heavy chain variable regions having CDRs
1, 2 and 3 consisting of the amino acid sequences set forth in SEQ
ID NOs: in any of the following (1) to (12):
(1) SEQ ID NOs: 123, 124 and 125 (GC33),
(2) SEQ ID NOs: 109, 110 and 111 (M11F1),
(3) SEQ ID NOs: 106, 107 and 108 (M3B8),
(4) SEQ ID NOs: 132, 133 and 134 (GC199),
(5) SEQ ID NOs: 106, 135 and 136 (GC202),
(6) SEQ ID NOs: 126, 127 and 128 (GC179),
(7) SEQ ID NOs: 129, 130 and 131 (GC194),
(8) SEQ ID NOs: 103, 104 and 105 (M13B3),
(9) SEQ ID NOs: 118, 121 and 122 (L9G11),
(10) SEQ ID NOs: 115, 116 and 117 (M6B1),
(11) SEQ ID NOs: 112, 113 and 114 (M5B9), and
(12) SEQ ID NOs: 118, 119 and 120 (M10D2).
[0052] Among the antibodies described in (1) to (12), preferred are
the antibodies described in (1) to (8), more preferred are the
antibodies described in (1) to (5), and particularly preferred is
the antibody described in (1). The antibodies described in (1) to
(8) recognize the C-terminal peptide of glypican 3 (a peptide
comprising the 374th amino acid to the 580th amino acid of glypican
3); and are useful as a therapeutic antibody. In addition, the
antibodies described in (9) to (12) recognize the N-terminal
peptide of glypican 3 (a peptide comprising from the 1st amino acid
to the 373rd amino acid of glypican 3); and are useful as a
diagnostic antibody.
(II) An antibody containing light chain variable regions having
CDRs 1, 2 and 3 consisting of the amino acid sequences set forth in
SEQ ID NOs: in any of the following (1) to (13):
(1) SEQ ID NOs: 143, 144 and 158 (GC33),
(2) SEQ ID NOs: 143, 144 and 145 (M11F1),
(3) SEQ ID NOs: 140, 141 and 142 (M3B8),
(4) SEQ ID NOs: 167, 168 and 169 (GC199),
(5) SEQ ID NOs: 170, 144 and 171 (GC202),
(6) SEQ ID NOs: 159, 160 and 161 (GC179),
(7) SEQ ID NOs: 162, 147 and 163 (GC194 (1)),
(8) SEQ ID NOs: 164, 165 and 166 (GC194 (2)),
(9) SEQ ID NOs: 137, 138 and 139 (M13B3),
(10) SEQ ID NOs: 155, 156 and 157 (L9G11),
(11) SEQ ID NOs: 149, 150 and 151 (M6B1),
(12) SEQ ID NOs: 146, 147 and 148 (M5B9), and
(13) SEQ ID NOs: 152, 153 and 154 (M10D2).
[0053] Among the antibodies described in (1) to (13), preferred are
the antibodies described in (1) to (8), more preferred are the
antibodies described in (1) to (5), and particularly preferred is
the antibody described in (1). The antibodies described in (1) to
(8) recognize the C-terminal peptide of glypican 3 (a peptide
comprising from the 374th amino acid to the 580th amino acid of
glypican 3); and are useful as a therapeutic antibody. In addition,
the antibodies described in (9) to (13) recognize the N-terminal
peptide of glypican 3 (a peptide comprising from the 1st amino acid
to the 373rd amino acid of glypican 3); and are useful as a
diagnostic antibody.
(III) An antibody selected from the group consisting of the
antibodies described in the following (1) to (13): (1) an antibody
containing heavy chain variable regions having CDRs 1, 2 and 3
consisting of the amino acid sequences set forth in SEQ ID NOs:
123, 124 and 125, and light chain variable regions having CDRs 1, 2
and 3 consisting of the amino acid sequences set forth in SEQ ID
NOs: 143, 144 and 158 (GC33), (2) an antibody containing heavy
chain variable regions having CDRs 1, 2 and 3 consisting of the
amino acid sequences set forth in SEQ ID NOs: 109, 110 and 111, and
light chain variable regions having CDRs 1, 2 and 3 consisting of
the amino acid sequences set forth in SEQ ID NOs: 143, 144 and 145
(M11F1), (3) an antibody containing heavy chain variable regions
having CDRs 1, 2 and 3 consisting of the amino acid sequences set
forth in SEQ ID NOs: 106, 107 and 108, and light chain variable
regions having CDRs 1, 2 and 3 consisting of the amino acid
sequences set forth in SEQ ID NOs: 140, 141 and 142 (M3B8), (4) an
antibody containing heavy chain variable regions having CDRs 1, 2
and 3 consisting of the amino acid sequences set forth in SEQ ID
NOs: 132, 133 and 134, and light chain variable regions having CDRs
1, 2 and 3 consisting of the amino acid sequences set forth in SEQ
ID NOs: 167, 168 and 169 (GC199), (5) an antibody containing heavy
chain variable regions having CDRs 1, 2 and 3 consisting of the
amino acid sequences set forth in SEQ ID NOs: 106, 135 and 136, and
light chain variable regions having CDRs 1, 2 and 3 consisting of
the amino acid sequences set forth in SEQ ID NOs: 170, 144 and 171
(GC202), (6) an antibody containing heavy chain variable regions
having CDRs 1, 2 and 3 consisting of the amino acid sequences set
forth in SEQ ID NOs: 126, 127 and 128, and light chain variable
regions having CDRs 1, 2 and 3 consisting of the amino acid
sequences set forth in SEQ ID NOs: 159, 160 and 161 (GC179), (7) an
antibody containing heavy chain variable regions having CDRs 1, 2
and 3 consisting of the amino acid sequences set forth in SEQ ID
NOs: 129, 130 and 131, and light chain variable regions having CDRs
1, 2 and 3 consisting of the amino acid sequences set forth in SEQ
ID NOs: 162, 147 and 163 (GC194 (1)), (8) an antibody containing
heavy chain variable regions having CDRs 1, 2 and 3 consisting of
the amino acid sequences set forth in SEQ ID NOs: 129, 130 and 131,
and light chain variable regions having CDRs 1, 2 and 3 consisting
of the amino acid sequences set forth in SEQ ID NOs: 164, 165 and
166 (GC194 (2)), (9) an antibody containing heavy chain variable
regions having CDRs 1, 2 and 3 consisting of the amino acid
sequences set forth in SEQ ID NOs: 103, 104 and 105, and light
chain variable regions having CDRs 1, 2 and 3 consisting of the
amino acid sequences set forth in SEQ ID NOs: 137, 138 and 139
(M13B3), (10) an antibody containing heavy chain variable regions
having CDRs 1, 2 and 3 consisting of the amino acid sequences set
forth in SEQ ID NOs: 118, 121 and 122, and light chain variable
regions having CDRs 1, 2 and 3 consisting of the amino acid
sequences set forth in SEQ ID NOs: 155, 156 and 157 (L9G11), (11)
an antibody containing heavy chain variable regions having CDRs 1,
2 and 3 consisting of the amino acid sequences set forth in SEQ ID
NOs: 115, 116 and 117, and light chain variable regions having CDRs
1, 2 and 3 consisting of the amino acid sequences set forth in SEQ
ID NOs: 149, 150 and 151 (M6B1), (12) an antibody containing heavy
chain variable regions having CDRs 1, 2 and 3 consisting of the
amino acid sequences set forth in SEQ ID NOs: 112, 113 and 114, and
light chain variable regions having CDRs 1, 2 and 3 consisting of
the amino acid sequences set forth in SEQ ID NOs: 146, 147 and 148
(M5B9), (13) an antibody containing heavy chain variable regions
having CDRs 1, 2 and 3 consisting of the amino acid sequences set
forth in SEQ ID NOs: 118, 119 and 120, and light chain variable
regions having CDRs 1, 2 and 3 consisting of the amino acid
sequences set forth in SEQ ID NOs: 152, 153 and 154 (M10D2).
[0054] Among the antibodies described in (1) to (13), preferred are
the antibodies described in (1) to (8), more preferred are the
antibodies described in (1) to (5), and particularly preferred is
the antibody described in (1). The antibodies described in (1) to
(8) recognize the C-terminal peptide of glypican 3 (a peptide
comprising from the 374th amino acid to the 580th amino acid of
glypican 3); and are useful as a therapeutic antibody. In addition,
the antibodies described in (9) to (13) recognize the N-terminal
peptide of glypican 3 (a peptide comprising from the 1st amino acid
to the 373rd amino acid of glypican 3); and are useful as a
diagnostic antibody.
(IV) An antibody having a heavy chain variable region described in
any of the following (1) to (7): (1) a heavy chain variable region
containing the amino acid sequence set forth in SEQ ID NO: 84 (GC33
VH ver.a), (2) a heavy chain variable region containing the amino
acid sequence set forth in SEQ ID NO: 85 (GC33 VH ver.c), (3) a
heavy chain variable region containing the amino acid sequence set
forth in SEQ ID NO: 86 (GC33 VH ver.f), (4) a heavy chain variable
region containing the amino acid sequence set forth in SEQ ID NO:
87 (GC33 VH ver.h), (5) a heavy chain variable region containing
the amino acid sequence set forth in SEQ ID NO: 88 (GC33 VH ver.i),
(6) a heavy chain variable region containing the amino acid
sequence set forth in SEQ ID NO: 89 (GC33 VH ver.j), and (7) a
heavy chain variable region containing the amino acid sequence set
forth in SEQ ID NO: 90 (GC33 VH ver.k).
[0055] Among the antibodies described in (1) to (7), particularly
preferred are the antibodies described in (2) to (7).
(V) An antibody having a light chain variable region containing the
amino acid sequence set forth in SEQ ID NO: 92 (GC33 VL ver.a).
(VI) An antibody selected from the group consisting of the
antibodies described in the following (1) to (7): (1) an antibody
having a heavy chain variable region containing the amino acid
sequence set forth in SEQ ID NO: 84 (GC33 VH ver.a) and a light
chain variable region containing the amino acid sequence set forth
in SEQ ID NO: 92 (GC33 VL ver.a), (2) an antibody having a heavy
chain variable region containing the amino acid sequence set forth
in SEQ ID NO: 85 (GC33 VH ver.c) and a light chain variable region
containing the amino acid sequence set forth in SEQ ID NO: 92 (GC33
VL ver.a), (3) an antibody having a heavy chain variable region
containing the amino acid sequence set forth in SEQ ID NO: 86 (GC33
VH ver.f) and a light chain variable region containing the amino
acid sequence set forth in SEQ ID NO: 92 (GC33 VL ver.a), (4) an
antibody having a heavy chain variable region containing the amino
acid sequence set forth in SEQ ID NO: 87 (GC33 VH ver.h) and a
light chain variable region containing the amino acid sequence set
forth in SEQ ID NO: 92 (GC33 VL ver.a), (5) an antibody having a
heavy chain variable region containing the amino acid sequence set
forth in SEQ ID NO: 88 (GC33 VH ver.i) and a light chain variable
region containing the amino acid sequence set forth in SEQ ID NO:
92 (GC33 VL ver.a), (6) an antibody having a heavy chain variable
region containing the amino acid sequence set forth in SEQ ID NO:
89 (GC33 VH ver.j) and a light chain variable region containing the
amino acid sequence set forth in SEQ ID NO: 92 (GC33 VL ver.a), and
(7) an antibody having a heavy chain variable region containing the
amino acid sequence set forth in SEQ ID NO: 90 (GC33 VH ver.k) and
a light chain variable region containing the amino acid sequence
set forth in SEQ ID NO: 92 (GC33 VL ver.a).
[0056] Among the antibodies described in (1) to (7), particularly
preferred are the antibodies described in (2) to (7).
(VII) An antibody described in any of the following (1) to (15):
(1) an antibody containing light chain variable regions having CDRs
1, 2 and 3 consisting of the amino acid sequences set forth in SEQ
ID NOs: 174, 144 and 158, (2) an antibody containing light chain
variable regions having CDRs 1, 2 and 3 consisting of the amino
acid sequences set forth in SEQ ID NOs: 175, 144 and 158, (3) an
antibody containing light chain variable regions having CDRs 1, 2
and 3 consisting of the amino acid sequences set forth in SEQ ID
NOs: 176, 144 and 158, (4) an antibody containing light chain
variable regions having CDRs 1, 2 and 3 consisting of the amino
acid sequences set forth in SEQ ID NOs: 177, 144 and 158, (5) an
antibody containing light chain variable regions having CDRs 1, 2
and 3 consisting of the amino acid sequences set forth in SEQ ID
NOs: 178, 144 and 158, (6) an antibody containing light chain
variable regions having CDRs 1, 2 and 3 consisting of the amino
acid sequences set forth in SEQ ID NOs: 179, 144 and 158, (7) an
antibody containing light chain variable regions having CDRs 1, 2
and 3 consisting of the amino acid sequences set forth in SEQ ID
NOs: 180, 144 and 158, (8) an antibody containing light chain
variable regions having CDRs 1, 2 and 3 consisting of the amino
acid sequences set forth in SEQ ID NOs: 181, 144 and 158, (9) an
antibody containing light chain variable regions having CDRs 1, 2
and 3 consisting of the amino acid sequences set forth in SEQ ID
NOs: 182, 144 and 158, (10) an antibody containing light chain
variable regions having CDRs 1, 2 and 3 consisting of the amino
acid sequences set forth in SEQ ID NOs: 183, 144 and 158, (11) an
antibody containing light chain variable regions having CDRs 1, 2
and 3 consisting of the amino acid sequences set forth in SEQ ID
NOs: 184, 144 and 158, (12) an antibody containing light chain
variable regions having CDRs 1, 2 and 3 consisting of the amino
acid sequences set forth in SEQ ID NOs: 185, 144 and 158, (13) an
antibody containing light chain variable regions having CDRs 1, 2
and 3 consisting of the amino acid sequences set forth in SEQ ID
NOs: 186, 144 and 158, (14) an antibody containing light chain
variable regions having CDRs 1, 2 and 3 consisting of the amino
acid sequences set forth in SEQ ID NOs: 187, 144 and 158, and (15)
an antibody containing light chain variable regions having CDRs 1,
2 and 3 consisting of the amino acid sequences set forth in SEQ ID
NOs: 188, 144 and 158.
[0057] Among the antibodies described in (1) to (15), preferred is
the antibody described in (15).
(VIII) An antibody described in any of the following (1) to (15):
(1) an antibody containing heavy chain variable regions having CDRs
1, 2 and 3 consisting of the amino acid sequences set forth in SEQ
ID NOs: 123, 124 and 125 and light chain variable regions having
CDRs 1, 2 and 3 consisting of the amino acid sequences set forth in
SEQ ID NOs: 174, 144 and 158, (2) an antibody containing heavy
chain variable regions having CDRs 1, 2 and 3 consisting of the
amino acid sequences set forth in SEQ ID NOs: 123, 124 and 125 and
light chain variable regions having CDRs 1, 2 and 3 consisting of
the amino acid sequences set forth in SEQ ID NOs: 175, 144 and 158,
(3) an antibody containing heavy chain variable regions having CDRs
1, 2 and 3 consisting of the amino acid sequences set forth in SEQ
ID NOs: 123, 124 and 125 and light chain variable regions having
CDRs 1, 2 and 3 consisting of the amino acid sequences set forth in
SEQ ID NOs: 176, 144 and 158, (4) an antibody containing heavy
chain variable regions having CDRs 1, 2 and 3 consisting of the
amino acid sequences set forth in SEQ ID NOs: 123, 124 and 125 and
light chain variable regions having CDRs 1, 2 and 3 consisting of
the amino acid sequences set forth in SEQ ID NOs: 177, 144 and 158,
(5) an antibody containing heavy chain variable regions having CDRs
1, 2 and 3 consisting of the amino acid sequences set forth in SEQ
ID NOs: 123, 124 and 125 and light chain variable regions having
CDRs 1, 2 and 3 consisting of the amino acid sequences set forth in
SEQ ID NOs: 178, 144 and 158, (6) an antibody containing heavy
chain variable regions having CDRs 1, 2 and 3 consisting of the
amino acid sequences set forth in SEQ ID NOs: 123, 124 and 125 and
light chain variable regions having CDRs 1, 2 and 3 consisting of
the amino acid sequences set forth in SEQ ID NOs: 179, 144 and 158,
(7) an antibody containing heavy chain variable regions having CDRs
1, 2 and 3 consisting of the amino acid sequences set forth in SEQ
ID NOs: 123, 124 and 125 and light chain variable regions having
CDRs 1, 2 and 3 consisting of the amino acid sequences set forth in
SEQ ID NOs: 180, 144 and 158, (8) an antibody containing heavy
chain variable regions having CDRs 1, 2 and 3 consisting of the
amino acid sequences set forth in SEQ ID NOs: 123, 124 and 125 and
light chain variable regions having CDRs 1, 2 and 3 consisting of
the amino acid sequences set forth in SEQ ID NOs: 181, 144 and 158,
(9) an antibody containing heavy chain variable regions having CDRs
1, 2 and 3 consisting of the amino acid sequences set forth in SEQ
ID NOs: 123, 124 and 125 and light chain variable regions having
CDRs 1, 2 and 3 consisting of the amino acid sequences set forth in
SEQ ID NOs: 182, 144 and 158, (10) an antibody containing heavy
chain variable regions having CDRs 1, 2 and 3 consisting of the
amino acid sequences set forth in SEQ ID NOs: 123, 124 and 125 and
light chain variable regions having CDRs 1, 2 and 3 consisting of
the amino acid sequences set forth in SEQ ID NOs: 183, 144 and 158,
(11) an antibody containing heavy chain variable regions having
CDRs 1, 2 and 3 consisting of the amino acid sequences set forth in
SEQ ID NOs: 123, 124 and 125 and light chain variable regions
having CDRs 1, 2 and 3 consisting of the amino acid sequences set
forth in SEQ ID NOs: 184, 144 and 158, (12) an antibody containing
heavy chain variable regions having CDRs 1, 2 and 3 consisting of
the amino acid sequences set forth in SEQ ID NOs: 123, 124 and 125
and light chain variable regions having CDRs 1, 2 and 3 consisting
of the amino acid sequences set forth in SEQ ID NOs: 185, 144 and
158, (13) an antibody containing heavy chain variable regions
having CDRs 1, 2 and 3 consisting of the amino acid sequences set
forth in SEQ ID NOs: 123, 124 and 125 and light chain variable
regions having CDRs 1, 2 and 3 consisting of the amino acid
sequences set forth in SEQ ID NOs: 186, 144 and 158, (14) an
antibody containing heavy chain variable regions having CDRs 1, 2
and 3 consisting of the amino acid sequences set forth in SEQ ID
NOs: 123, 124 and 125 and light chain variable regions having CDRs
1, 2 and 3 consisting of the amino acid sequences set forth in SEQ
ID NOs: 187, 144 and 158, and (15) an antibody containing heavy
chain variable regions having CDRs 1, 2 and 3 consisting of the
amino acid sequences set forth in SEQ ID NOs: 123, 124 and 125 and
light chain variable regions having CDRs 1, 2 and 3 consisting of
the amino acid sequences set forth in SEQ ID NOs: 188, 144 and
158.
[0058] Among the antibodies described in (1) to (15), preferred is
the antibody described in (15).
(IX) An antibody described in any of the following (1) to (15): (1)
an antibody having a light chain variable region containing the
amino acid sequence set forth in SEQ ID NO: 191, (2) an antibody
having a light chain variable region containing the amino acid
sequence set forth in SEQ ID NO: 192, (3) an antibody having a
light chain variable region containing the amino acid sequence set
forth in SEQ ID NO: 193, (4) an antibody having a light chain
variable region containing the amino acid sequence set forth in SEQ
ID NO: 194, (5) an antibody having a light chain variable region
containing the amino acid sequence set forth in SEQ ID NO: 195, (6)
an antibody having a light chain variable region containing the
amino acid sequence set forth in SEQ ID NO: 196, (7) an antibody
having a light chain variable region containing the amino acid
sequence set forth in SEQ ID NO: 197, (8) an antibody having a
light chain variable region containing the amino acid sequence set
forth in SEQ ID NO: 198, (9) an antibody having a light chain
variable region containing the amino acid sequence set forth in SEQ
ID NO: 199, (10) an antibody having a light chain variable region
containing the amino acid sequence set forth in SEQ ID NO: 200,
(11) an antibody having a light chain variable region containing
the amino acid sequence set forth in SEQ ID NO: 201, (12) an
antibody having a light chain variable region containing the amino
acid sequence set forth in SEQ ID NO: 202, (13) an antibody having
a light chain variable region containing the amino acid sequence
set forth in SEQ ID NO: 203, (14) an antibody having a light chain
variable region containing the amino acid sequence set forth in SEQ
ID NO: 204, and (15) an antibody having a light chain variable
region containing the amino acid sequence set forth in SEQ ID NO:
205.
[0059] Among the antibodies described in (1) to (15), preferred is
the antibody described in (15).
(X) An antibody having a light chain variable region selected from
the group consisting of the light chain variable regions described
in the following (1) to (15): (1) a light chain variable region
containing the amino acid sequence set forth in SEQ ID NO: 191, (2)
a light chain variable region containing the amino acid sequence
set forth in SEQ ID NO: 192, (3) a light chain variable region
containing the amino acid sequence set forth in SEQ ID NO: 193, (4)
a light chain variable region containing the amino acid sequence
set forth in SEQ ID NO: 194, (5) a light chain variable region
containing the amino acid sequence set forth in SEQ ID NO: 195, (6)
a light chain variable region containing the amino acid sequence
set forth in SEQ ID NO: 196, (7) a light chain variable region
containing the amino acid sequence set forth in SEQ ID NO: 197, (8)
a light chain variable region containing the amino acid sequence
set forth in SEQ ID NO: 198, (9) a light chain variable region
containing the amino acid sequence set forth in SEQ ID NO: 199,
(10) a light chain variable region containing the amino acid
sequence set forth in SEQ ID NO: 200, (11) a light chain variable
region containing the amino acid sequence set forth in SEQ ID NO:
201, (12) a light chain variable region containing the amino acid
sequence set forth in SEQ ID NO: 202, (13) a light chain variable
region containing the amino acid sequence set forth in SEQ ID NO:
203, (14) a light chain variable region containing the amino acid
sequence set forth in SEQ ID NO: 204, and (15) a light chain
variable region containing the amino acid sequence set forth in SEQ
ID NO: 205, and a heavy chain variable region selected from the
group consisting of the heavy chain variable regions described in
the following (1) to (7): (1) a heavy chain variable region
containing the amino acid sequence set forth in SEQ ID NO: 84, (2)
a heavy chain variable region containing the amino acid sequence
set forth in SEQ ID NO: 85, (3) a heavy chain variable region
containing the amino acid sequence set forth in SEQ ID NO: 86, (4)
a heavy chain variable region containing the amino acid sequence
set forth in SEQ ID NO: 87, (5) a heavy chain variable region
containing the amino acid sequence set forth in SEQ ID NO: 88, (6)
a heavy chain variable region containing the amino acid sequence
set forth in SEQ ID NO: 89, and
[0060] Among the antibodies described above, preferred is the
antibody having a light chain variable region containing the amino
acid sequence set forth in SEQ ID NO: 205 and a heavy chain
variable region containing the amino acid sequence set forth in SEQ
ID NO: 90.
(XI) An antibody, in which one or more amino acids have been
replaced, deleted, added and/or inserted in the amino acid sequence
described in any one of the above-mentioned (I) to (X), and which
has an activity equivalent to that of the antibody described in any
of (I) to (X).
[0061] In the present invention, the activity equivalent to that of
the antibody described in any of (I) to (X) means that the binding
activity to a human glypican 3 antibody or the cytotoxicity
activity on a cell that expresses human glypican 3 (e.g., HepG2 or
a recombinant CHO cells expressing human glypican 3, etc.) is
equivalent.
Humanized Antibody
[0062] One preferred embodiment of the antibody according to the
present invention is a humanized antibody that binds to glypican 3.
The humanized antibody can be prepared by using a known method.
[0063] The humanized antibody is also referred to as a reshaped
human antibody, which is made by transplanting the complementarity
determining region (CDR) of an antibody of a non-human mammal, for
example a mouse antibody, into the CDR of a human antibody. The
general recombinant DNA technology for preparation of such
antibodies is also known (see European Patent Application EP 125023
and International Patent Application WO 96/02576).
[0064] Specifically, for example, in the case where a CDR is
derived from a mouse antibody, a DNA sequence which has been
designed to link the CDRs of the mouse antibody with the framework
region (FR) of a human antibody is synthesized by the PCR method
using several oligonucleotides as primers, which have been prepared
so as to have portions overlapping with one another at both ends of
the CDR and the FR (see the method described in International
Patent Application WO 98/13388).
[0065] As for the framework region of a human antibody to be linked
with the CDR, the one which allows a complementarity determining
region to form a favorable antigen-binding site is selected. If
necessary, an amino acid in the framework region of a variable
region of the antibody may be replaced so that the complementarity
determining region of a reshaped human antibody may form an
appropriate antigen-binding site (Sato, K. et al., Cancer Res.
(1993) 53, 851-856).
[0066] The C region of a human antibody may be used as the C region
of a chimeric antibody or a humanized antibody, for example,
C.gamma.1, C.gamma.2, C.gamma.3, and C.gamma.4 may be used in the H
chain, and C.kappa. and C.lamda. may be used in the L chain. The C
region of a human antibody may also be modified in order to improve
the stability of the antibody or the production thereof. The human
antibody to be used in the humanization may be any isotype of human
antibody, for example, IgG, IgM, IgA, IgE and IgD, preferably, IgG,
more preferably IgG1 or IgG3, and particularly preferably IgG1. the
present invention IgG1 is effective when an antibody is used as an
anticancer agent in terms of having a high cytotoxicity activity
(Chemical immunology, 65: 88 (1997)).
[0067] In addition, after the humanized antibody is prepared, an
amino acid in a variable region (e.g., FR) or a constant region may
be replaced with another amino acid.
[0068] The origin of the CDR in a humanized antibody is not
particularly limited, and the CDR may be derived from any animals.
For example, it is possible to use a sequence derived from a mouse
antibody, a rat antibody, a rabbit antibody, a camel antibody or
the like. Preferred is a CDR sequence of a mouse antibody.
[0069] With regard to the humanization of an antibody, it is
generally difficult to humanize it while maintaining the agonist
activity of the original antibody. In the present invention,
however, a humanized antibody having an agonist activity equivalent
to that of the original mouse antibody was successful acquired.
Since the antigenicity of the humanized antibody in the human body
is reduced, it is useful in administering it into the human for a
therapeutic purpose.
[0070] Preferred examples of the humanized anti-glypican 3 antibody
in the present invention include, for example, an antibody having a
heavy chain variable region set forth in SEQ ID NO: 84 (GC33 VH
ver.a), SEQ ID NO: 85 (GC33 VH ver.c), SEQ ID NO: 86 (GC33 VH
ver.f), SEQ ID NO: 87 (GC33 VH ver.h), SEQ ID NO: 88 (GC33 VH
ver.i), SEQ ID NO: 89 (GC33 VH ver.j) or SEQ ID NO: 90 (GC33 VH
ver.k) or an antibody having a light chain variable region set
forth in SEQ ID NO: 92 (GC33 VL ver.a). Particularly preferred
examples thereof include an antibody having a heavy chain variable
region set forth in SEQ ID NO: 84 (GC33 VH ver.a), SEQ ID NO: 85
(GC33 VH ver.c), SEQ ID NO: 86 (GC33 VH ver.f), SEQ ID NO: 87 (GC33
VH ver.h), SEQ ID NO: 88 (GC33 VH ver.i), SEQ ID NO: 89 (GC33 VH
ver.j) or SEQ ID NO: 90 (GC33 VH ver.k) and a light chain variable
region set forth in SEQ ID NO: 92 (GC33 VL ver.a).
[0071] In addition, a preferred example of the humanized
anti-glypican 3 antibody includes an antibody having a heavy chain
variable region containing the amino acid sequence set forth in SEQ
ID NO: 90 and a light chain variable region containing the amino
acid sequence set forth in SEQ ID NO: 205.
[0072] A preferred embodiment of the antibody according to the
present invention is an antibody that binds to the epitope to which
the antibody set forth in any of the following (1) to (8)
binds:
(1) an antibody containing a heavy chain variable region having the
amino acid sequence set forth in SEQ ID NO: 62 and a light chain
variable region having the amino acid sequence set forth in SEQ ID
NO: 73 (GC33), (2) an antibody containing a heavy chain variable
region having the amino acid sequence set forth in SEQ ID NO: 26
and a light chain variable region the amino acid sequence set forth
in SEQ ID NO: 48 (M11F1), (3) an antibody containing a heavy chain
variable region having the amino acid sequence set forth in SEQ ID
NO: 25 and a light chain variable region the amino acid sequence
set forth in SEQ ID NO: 47 (M3B8), (4) an antibody containing a
heavy chain variable region having the amino acid sequence set
forth in SEQ ID NO: 60 and a light chain variable region the amino
acid sequence set forth in SEQ ID NO: 71 (GC199), (5) an antibody
containing a heavy chain variable region having the amino acid
sequence set forth in SEQ ID NO: 61 and a light chain variable
region the amino acid sequence set forth in SEQ ID NO: 72 (GC202),
(6) an antibody containing a heavy chain variable region having the
amino acid sequence set forth in SEQ ID NO: 63 and a light chain
variable region the amino acid sequence set forth in SEQ ID NO: 74
(GC179), (7) an antibody containing a heavy chain variable region
having the amino acid sequence set forth in SEQ ID NO: 64 and a
light chain variable region the amino acid sequence set forth in
SEQ ID NO: 75 (GC194 (1)), and (8) an antibody containing a heavy
chain variable region having the amino acid sequence set forth in
SEQ ID NO: 64 and a light chain variable region the amino acid
sequence set forth in SEQ ID NO: 76 (GC194 (2)). More preferred is
an antibody that binds to the epitope to which the antibody
described in any of (1) to (5) binds, and particularly preferred is
an antibody that binds to the epitope to which the antibody
described in (1) binds.
[0073] The antibody that binds to the epitope to which any of the
above-mentioned antibodies bind is useful because it has a
particularly high cytotoxicity.
[0074] The antibody described in any of (1) to (7) binds to a
region from the 524th amino acid to the 580th amino acid of human
glypican 3. In particular, it binds to a region from the 524th
amino acid to the 563rd amino acid. The antibody described in any
of (1) to (5) binds to a region from the 537th amino acid to the
563rd amino acid of human glypican 3. The antibody described in (1)
binds to a region from the 544th amino acid to the 553rd amino acid
of human glypican 3. In particular, it binds to a region from the
546th amino acid to the 551st amino acid.
[0075] The antibodies recognizing the above-mentioned epitopes have
a high cytotoxicity, therefore they are useful in the treatment of
a disease such as cancer. In particular, the antibody which binds
to a region from the 546th amino acid to the 551st amino acid is
useful as it has a particularly high cytotoxicity
[0076] Accordingly, the present invention includes the antibodies
which binds to an epitope in a region from the 524th amino acid to
the 580th amino acid of human glypican 3, preferably a region from
the 524th amino acid to the 563rd amino acid, more preferably a
region from the 537th amino acid to the 563rd amino acid, further
more preferably a region from the 544th amino acid to the 553rd
amino acid, particularly preferably a region from the 546th amino
acid to the 551st amino acid.
[0077] Another preferred embodiment according to the present
invention is an antibody that recognizes a region from the 524th
amino acid to the 563rd amino acid of human glypican 3 and does not
recognize a region from the 537th amino acid to the 563rd amino
acid.
[0078] A further preferred embodiment according to the present
invention is an antibody that recognizes a region from the 537th
amino acid to the 563rd amino acid of human glypican 3 and does not
recognize a region from the 550th amino acid to the 563rd amino
acid.
[0079] The analysis of an epitope recognized by an antibody can be
carried out by a method known to those skilled in the art, for
example, by Western blotting described in Examples below.
[0080] The antibody that recognizes the above-mentioned regions as
an epitope can be obtained by a method known to those skilled in
the art. For example, it can be obtained by preparing a peptide
containing an amino acid sequence of a target region based on an
amino acid sequence of human glypican 3 and preparing an antibody
with the use of the peptide as an immunogene, or by preparing an
antibody by a usual method and determining an epitope that the
obtained antibody recognizes, and then selecting an antibody that
recognizes the target epitope.
[0081] A preferred example of the anti-glypican 3 antibody of the
present invention is an antibody having a high ADCC activity or an
antibody having a high CDC activity to a cell that expresses
glypican 3.
[0082] The phrase "a high ADCC activity" or "a high CDC activity"
as used herein means that the antibody of the invention has a
higher ADCC activity or a higher CDC activity than that of a known
anti-glypican 3 antibody. Known glypican 3 antibodies include, for
example, M3C11 and M1E07 described in International Patent
Application WO 2004/22739.
[0083] The ADCC activity or the CDC activity can be measured by a
method known to those skilled in the art. For example, it can be
measured by the chromium release test. Specific conditions of the
chromium release test for measuring the ADCC activity are not
particularly limited, however, for example, it can be measured
using the conditions described in the Examples below.
[0084] Examples of the cells that express glypican 3 include, for
example, a hepatoma cell line such as HepG2, a CHO cell line having
a gene encoding glypican 3 incorporated therein and the like. To
measure the ADCC activity, it is preferred to use a HepG2 cell
line, and to measure the CDC activity, it is preferred to use a
recombinant CHO cell line that expresses GPC3. The recombinant CHO
cell line that expresses GPC3 may be prepared by any method,
however, it can be prepared by, for example, the method described
in the Examples below.
[0085] In the case where the anti-glypican 3 antibody is used as an
anticancer agent, it is preferred that it has an ADCC activity at
the same level as that of an antibody containing a heavy chain
variable region having the amino acid sequence set forth in SEQ ID
NO: 62 and a light chain variable region having the amino acid
sequence set forth in SEQ ID NO: 73 (GC33). In the case where the
anti-glypican 3 antibody is used as an anticancer agent, it is
preferred that it has a CDC activity at the same level as that of
an antibody containing a heavy chain variable region having the
amino acid sequence set forth in SEQ ID NO: 62 and a light chain
variable region having the amino acid sequence set forth in SEQ ID
NO: 73 (GC33).
[0086] Further, the present invention includes an antibody having a
high binding activity to glypican 3.
[0087] In the present invention, the binding activity of the
antibody to glypican 3 can be measured by using a method known to
those skilled in the art. For example, it can be measured by
utilizing the surface plasmon resonance with BIAcore. Specifically,
a glypican 3 protein is immobilized on a sensor chip to react with
an antibody, and the interaction between the antibody and glypican
3 can be calculated as a reaction rate constant from the
measurement value. In addition, with regard to the evaluation of
the binding activity, an enzyme linked immunosorbent assay (ELISA),
an enzyme immunoassay (EIA), a radioimmunoassay (RIA) or a
fluorescent antibody technique can be used. For example, in the
case where an enzyme immunoassay is used, a sample containing an
antibody to be tested, for example, a culture supernatant of a cell
producing an antibody to be tested or a purified antibody is added
to a plate which has been coated with an antigen to which the
antibody to be tested binds. Then, a secondary antibody labeled
with an enzyme such as alkaline phosphatase is added, and the
plated is incubated and washed. Then, an enzyme substrate such as
p-nitrophenyl phosphate is added and the absorbance is measured,
whereby an antigen binding activity can be evaluated. The upper
limit of the binding activity is not particularly limited. However,
for example, the upper limit can be defined within the range which
is technically possible by those skilled in the art. It will be
appreciated that the range which is technically possible will be
expanded by the advancement of technology.
[0088] Further, in the present invention, an amino acid to be
deamidated or an amino acid adjacent to an amino acid to be
deamidated may be replaced with another amino acid for the purpose
of, for example, suppressing deamidation to increase the stability
of the antibody. The amino acid to be deamidated includes,
asparagine and glutamine, preferably asparagine. An amino acid
adjacent to asparagine is not particularly limited and may be any
amino acid. It is known that an asparagine-glycine sequence is
particularly susceptible to deamidation, thus, glycine is preferred
as the amino acid adjacent to asparagine. An amino acid used for
replacement is not particularly limited and may be any amino acid
other than asparagine and glutamine. Preferred is an amino acid
other than valine and proline. Therefore, in the present invention,
in the case where the antibody is deamidated, it is preferred to
replace the amino acid with an amino acid other than asparagine,
glutamine, valine and proline. Suppression of deamidation by amino
acid replacement can be carried out with reference to, for example,
International Patent Application WO 03/057881. In the case where
amino acid replacement is carried out for the purpose of
suppression of deamidation, it is preferred that the antigen
binding activity before replacement is maintained.
[0089] Another embodiment of stabilization of the antibody includes
replacement of glutamic acid with another amino acid. In addition,
in the present invention, it was found that, in the case where the
6th amino acid of the heavy chain of an antibody is glutamic acid,
the antibody can be significantly stabilized by replacing the
glutamic acid with glutamine. Accordingly, the present invention
also relates to a method of stabilizing an antibody by replacing
the glutamic acid at the 6th position of the heavy chain of the
antibody with glutamine. The amino acid numbering of the antibody
is known to those skilled in the art (e.g., Kabat, E. A. et al.,
"Sequences of Proteins of Immunological Interest", US Dept. Health
and Human Services 1983).
[0090] The antibody of the invention may be a conjugated antibody
in which the antibody is conjugated with various molecules, such as
polyethyleneglycol (PEG), radioactive materials and toxin. Such a
conjugated antibody may be prepared by chemically modifying the
antibody obtained as above. Methods for modifying antibodies have
already been established in the art. The antibody of the invention
encompasses such a conjugated antibody.
[0091] The antibody of the invention may also be a bispecific
antibody (see, for example, Journal of Immunology, 1994, 152,
5368-5374). The bispecific antibody may recognize glypican 3 and
another antigen, or may recognize different epitopes on a GPC3
molecule.
[0092] Further, the antibody of the invention may carry a certain
protein fused to the N- or C-terminus of the antibody (Clinical
Cancer Research, 2004, 10, 1274-1281). The protein to be fused to
the antibody may be conveniently selected by those skilled in the
art.
[0093] In addition, the antibody of the invention includes an
antibody with an enhanced cytotoxicity. Examples of the antibody
with an enhanced cytotoxicity include an antibody lacking fucose,
an antibody having bisecting N-acetyl glucosamine (GlcNAc) attached
to its sugar chain, and an antibody having altered binding activity
for Fc.gamma. receptor obtained by substituting one or more amino
acids in the Fc region. Such antibodies with an enhanced
cytotoxicity can be prepared by a method known in the art.
Method of Preparing Antibody
[0094] The antibody that binds to glypican 3 can be prepared by a
method known to those skilled in the art. For example, a monoclonal
antibody-producing hybridoma can be prepared as follows basically
using a known technique. That is, the hybridoma can be prepared by
immunizing a mammal in accordance with a usual immunization method
using a glypican 3 protein or a cell that expresses glypican 3 as a
sensitizing antigen. The thus obtained immunocyte is fused with a
known parent cell by a usual cell fusion method, and then selecting
a monoclonal antibody-producing cell by a usual screening
method.
[0095] Specifically, a monoclonal antibody can be prepared as
follows. First, a glypican 3 protein is obtained based on the
glypican 3 gene/amino acid sequence shown in SEQ ID NOs: 3 and 4,
which is used as a sensitizing antigen to obtain an antibody. More
specifically, the gene sequence encoding glypican 3 is inserted
into a known expression vector system, and an appropriate host cell
is transformed with the vector, and then a target human glypican 3
protein is purified by a known method from the host cell or the
culture supernatant.
[0096] Subsequently, this purified glypican 3 protein is used as a
sensitizing antigen. Alternatively, a partial peptide of glypican 3
can be used as a sensitizing antigen. In this case, the partial
peptide can also be obtained by chemical synthesis according to the
amino acid sequence of human glypican 3.
[0097] The epitope on a glypican 3 molecule which is recognized by
the anti-glypican 3 antibody of the present invention is not
limited to a particular epitope. The anti-glypican 3 antibody may
recognize any epitope, as long as the epitope is present on a
glypican 3 molecule. Accordingly, any fragment can also be used as
an antigen for producing the anti-glypican 3 antibody of the
present invention, as long as it contains an epitope that is
present on a glypican 3 molecule.
[0098] A mammal to be immunized with a sensitizing antigen is not
particularly limited, but it is preferably selected in view of
compatibility with a parent cell to be used for cell fusion. For
example, rodents such as mice, rats and hamsters, rabbits or
monkeys are generally used.
[0099] Immunization of an animal with a sensitizing antigen is
carried out in accordance with a known method. For example,
immunization is carried out by a general method in which a mammal
is injected intraperitoneally or subcutaneously with a sensitizing
antigen. Specifically, a sensitizing antigen is diluted with or
suspended in an appropriate amount of PBS (Phosphate-Buffered
Saline), physiological saline or the like, an appropriate amount of
a standard adjuvant such as a Freund's complete adjuvant is mixed
with the product if necessary, and then the solution is emulsified
and is administered to a mammal several times every 4 to 21 days.
In addition, an appropriate carrier can also be used upon
immunization with a sensitizing antigen.
[0100] A mammal is immunized as described above, and then an
increased level of a target antibody in the serum is confirmed.
Subsequently, immunocytes are collected from the mammal, and then
subjected to cell fusion. A particularly preferred immunocyte is a
splenocyte.
[0101] As a parent partner cell to be fused with the
above-mentioned immunocyte, a mammalian myeloma cell is used.
Examples of a cell line of the myeloma cell that is preferably used
herein include various known cell lines such as P3 (P3x63 Ag8.653)
(J. Immunol. (1979) 123, 1548-1550), P3x63 Ag8U.1 (Current Topics
in Microbiology and Immunology (1978) 81, 1-7), NS-1 (Kohler. G.
and Milstein, C. Eur. J. Immunol. (1976) 6, 511-519), MPC-11
(Margulies. D. H. et al., Cell (1976) 8, 405-415), SP2/0 (Shulman,
M. et al., Nature (1978) 276, 269-270), FO (de St. Groth, S. F. et
al., J. Immunol. Methods (1980) 35, 1-21), S194 (Trowbridge, I. S.
J. Exp. Med. (1978) 148, 313-323) and R210 (Galfre, G. et al.,
Nature (1979) 277, 131-133).
[0102] Cell fusion of the above-mentioned immunocytes with myeloma
cells can be basically carried out in accordance with a known
method, for example, the method of Kohler and Milstein et al.
(Kohler. G. and Milstein, C., Methods Enzymol. (1981) 73,
3-46).
[0103] More specifically, the above-mentioned cell fusion is
carried out in a normal nutrition culture solution in the presence
of, for example, a cell-fusion accelerator. As the cell-fusion
accelerator, for example, polyethylene glycol (PEG), a
hemagglutinating virus of Japan (HVJ) is used. If desired, an
adjuvant such as dimethylsulfoxide can be added to further enhance
the fusion efficiency.
[0104] The ratio of immunocytes to myeloma cells may be
appropriately selected. For example, it is preferred that the
number of immunocytes is 1 to 10 times greater than that of myeloma
cells. The culture solution to be used for the above-mentioned cell
fusion include, for example, a RPMI1640 culture solution or a MEM
culture solution which is suitable for the growth of the
above-mentioned myeloma cell line, or another normal culture
solution which is used for this type of cell culture. Moreover, a
serum supplement such as fetal calf serum (FCS) can be used in
combination therewith.
[0105] Cell fusion is carried out as follows. Predetermined amounts
of the above-mentioned immunocytes and myeloma cells are mixed well
in the above-mentioned culture solution, a PEG (e.g., with an
average molecular weight of approximately 1000 to 6000) solution (a
general concentration of 30 to 60% (w/v)), which had been
pre-heated at approximately 37.degree. C., is added, and then the
solution is mixed, whereby a target fusion cell (hybridoma) is
formed. Subsequently, an appropriate culture solution is added
successively, and then a step of removing the supernatant by
centrifugation is repeated to remove a reagent for cell fusion or
the like that is unfavorable for the growth of the hybridoma.
[0106] The thus obtained hybridoma is selected by culturing the
hybridoma in a standard selective culture solution such as a HAT
culture solution (a culture solution containing hypoxanthine,
aminopterin and thymidine). Cultivation in the above-mentioned HAT
culture solution is continued for a time period sufficient for the
cells (unfused cells) other than the target hybridoma to die
(normally, several days to several weeks). Subsequently, a standard
limiting dilution method is conducted to screen for and monoclone
of hybridoma that produces a target antibody.
[0107] In addition to the method of immunizing a non-human animal
with an antigen to obtain hybridoma, a desired human antibody
having a binding activity to glypican 3 can also be obtained by
sensitizing a human lymphocyte with glypican 3 in vitro, and
allowing the sensitized lymphocyte to fuse with a human-derived
myeloma cell having a permanent division potential (see
JP-B-1-59878). In another method, glypican 3 antigen is
administered to a transgenic animal having all the repertories of
human antibody genes to obtain anti-glypican 3 antibody-producing
cells, which are then immortalized, and a human antibody for
glypican 3 may be obtained from the immortalized anti-glypican 3
antibody-producing cells (see International Patent Applications WO
94/25585, WO 93/12227, WO 92/03918 and WO 94/02602).
[0108] The thus prepared hybridoma that produce a monoclonal
antibody can be passage-cultured in a standard culture solution, or
can be stored for a long period in liquid nitrogen.
[0109] One example of a method employed to obtain a monoclonal
antibody from the hybridoma involves culturing the hybridoma and
obtaining a monoclonal antibody from the culture supernatant in
accordance with a standard method. Another method involves
administering the hybridoma to a mammal that is compatible with the
hybridoma to allow it to proliferate, and obtaining a monoclonal
antibody from the ascites. The former method is suitable to obtain
an antibody of high purity, while the latter method is suitable for
the mass production of antibodies.
[0110] It is also possible to prepare a recombinant antibody by
cloning the antibody gene from the hybridoma, incorporating the
gene into an appropriate vector, introducing the vector into a
host, and then allowing the host to produce the recombinant
antibody by a genetic engineering technique (e.g., see Vandamme, A.
M. et al., Eur. J. Biochem. (1990) 192, 767-775, 1990).
[0111] Specifically, mRNA encoding the variable (V) region of an
anti-glypican 3 antibody is isolated from a hybridoma producing the
anti-glypican 3 antibody. mRNA is isolated by a known method such
as a guanidine ultracentrifugal method (Chirgwin, J. M. et al.,
Biochemistry (1979) 18, 5294-5299) or an AGPC method (Chomczynski,
P. et al., Anal. Biochem. (1987) 162, 156-159), and total RNA is
prepared, and then target mRNA is prepared using an mRNA
Purification Kit (Pharmacia) or the like. In addition, mRNA can
also be directly prepared using a QuickPrep mRNA Purification Kit
(Pharmacia).
[0112] The cDNA of the antibody V region is synthesized using a
reverse transcriptase from the thus obtained mRNA. cDNA may be
synthesized us ing an AMV Reverse Transcriptase First-strand cDNA
Synthesis Kit (SEIKAGAKU CORPORATION) or the like. In addition, for
example, a 5'-Ampli FINDER RACE Kit (Clontech), the 5'-RACE method
using PCR (Frohman, M. A. et al., Proc. Natl. Acad. Sci. USA (1988)
85, 8998-9002, Belyaysky, A. et al., Nucleic Acids Res. (1989) 17,
2919-2932) can be employed for synthesizing and amplifying
cDNA.
[0113] A target DNA fragment is purified from the thus obtained PCR
product, and then ligated to a vector DNA. A recombinant vector is
prepared from the product, and then the vector is introduced into
E. coli or the like, and a colony is selected, thereby preparing a
desired recombinant vector. The nucleotide sequence of the target
DNA is then determined by a known method such as a
dideoxynucleotide chain termination method.
[0114] After DNA encoding the V region of the target anti-glypican
3 antibody is obtained, this DNA is incorporated into an expression
vector containing DNA encoding the constant region (C region) of
the target antibody.
[0115] To produce the anti-glypican 3 antibody used in the present
invention, the antibody gene is incorporated into an expression
vector so that the gene is expressed under the regulation of the
gene expression control region including, for example, an enhancer
and a promoter. Next, a host cell is transformed with the
expression vector, thereby allowing the host to express the
antibody.
[0116] An antibody gene can be expressed by incorporating a
polynucleotide encoding the H chain or a polynucleotide encoding
the L chain separately into an expression vector, and then
simultaneously transforming a host cell with the vectors, or by
incorporating polynucleotides encoding the H chain and the L chain
into a single expression vector, and then transforming a host cell
with the vector (see International Patent Application WO
94/11523).
Polynucleotide
[0117] In another aspect, the present invention provides a
polynucleotide encoding a heavy chain variable region or a light
chain variable region of the antibody of the present invention.
Preferably, the polynucleotide of the present invention has a
nucleotide sequence described in any of SEQ ID NOs: 11-21, 33-43,
55-59, 65-70 and 77-83. In addition, a polynucleotide that is
hybridized to the above-mentioned polynucleotide under stringent
conditions and encodes an antibody having an activity equivalent to
that of the antibody of the present invention is also within the
scope of the present invention.
[0118] The polynucleotide of the present invention is not
particularly limited as long as it encodes the antibody of the
present invention. It is a polymer composed of a plurality of
nucleotides, such as deoxyribonucleic acids (DNA) or ribonucleic
acids (RNA). It may contain a base other than a naturally occurring
base. The polynucleotide of the present invention can be used for
producing an antibody by a genetic engineering technique. In
addition, the polynucleotide of the present invention can be used
as a probe to screen for an antibody having a function equivalent
to that of the antibody of the present invention. That is, a
polynucleotide encoding the antibody of the present invention or a
partial fragment thereof may be used as a probe to obtain DNA that
is hybridized to the polynucleotide under stringent conditions and
encodes an antibody having an activity equivalent to that of the
antibody of the present invention by techniques such as a
hybridization technique, a gene amplification technique (e.g.,
PCR). Such DNA is also included in the polynucleotide of the
present invention.
[0119] The hybridization technique (Sambrook, J. et al., Molecular
Cloning 2nd ed., 9.47-9.58, Cold Spring Harbor Lab. Press, 1989) is
well known to those skilled in the art. Examples of the
hybridization conditions include, for example, low stringent
conditions. The low stringent conditions are, for example, the
conditions of 42.degree. C., 0.1.times.SSC and 0.1% SDS, preferably
the conditions of 50.degree. C., 0.1.times.SSC and 0.1% SDS when
washing is performed after hybridization. More preferred examples
of the hybridization conditions include, for example, high
stringent conditions. The high stringent conditions are, for
example, the conditions of 65.degree. C., 5.times.SSC and 0.1% SDS.
Under these conditions, it can be expected that a polynucleotide
having a higher homology can be efficiently obtained under higher
temperature. Incidentally, there are plural factors that affect the
stringency of hybridization, such as temperature and the
concentration of salt, and those skilled in the art can achieve a
similar stringency by appropriately selecting these factors.
[0120] An antibody functionally equivalent to the antibody of the
present invention encoded by a polynucleotide obtained by such a
hybridization technique and a gene amplification technique usually
has a high homology with the antibody in terms of the amino acid
sequence. The antibody of the present invention also includes an
antibody that is functionally equivalent to the antibody of the
present invention and has a high homology with the amino acid
sequence of the antibody. A high homology means generally at least
50% or higher identity, preferably 75% or higher identity, more
preferably 85% or higher identity, and further more preferably 95%
or higher identity at the amino acid level. To determine the
homology of polypeptides, the algorithm described in the literature
(Wilbur, W. J. and Lipman, D. J., Proc. Natl. Acad. Sci. USA (1983)
80, 726-730) may be employed.
[0121] The present invention also provides a vector containing the
polynucleotide of the present invention. Such a vector can be used
for preparing the antibody of the present invention. As for the
vector of the present invention, in the case where E. coli is used
as a host, for example, it is not particularly limited as long as
it has "ori" for use in amplification in E. coli to produce and
amplify the vector in a large amount in E. coli (e.g., JM109,
DH5.alpha., HB101 or XL1Blue), and has a marker gene for selecting
a transformed E. coli (e.g., a drug resistance gene that can be
identified by a drug such as ampicillin, tetracycline, kanamycin or
chloramphenicol). Examples of the vector include M13-series
vectors, pUC-series vectors, pBR322, pBluescript, pCR-Script and
the like. In addition, pGEM-T, pDIRECT, and pT7 can also be used
for subcloning and extracting cDNA as well as the vectors described
above.
[0122] As the vector of the present invention, an expression vector
is particularly useful. For example, an expression vector to be
expressed in E. coli should have the above characteristics to be
amplified in E. coli. In addition, in the case where E. coli, such
as JM109, DH5.alpha., HB101, or XL1-Blue is used as a host cell, it
is indispensable that the vector should have a promoter, for
example, lacZ promoter (Ward et al., Nature (1989) 341, 544-546;
FASEB J. (1992) 6, 2422-2427), araB promoter (Better et al.,
Science (1988) 240, 1041-1043), T7 promoter or the like, that can
efficiently express the desired product in E. coli. Examples of
such a vector include pGEX-5X-1 (Pharmacia), "QIAexpress system"
(Qiagen), pEGFP, pET (in this case, the host is preferably BL21
which expresses T7 RNA polymerase) and the like, as well as the
vectors described above.
[0123] In addition, the vector may also contain a signal sequence
for polypeptide secretion. As for the signal sequence for protein
secretion, in the case where a polypeptide is produced in the
periplasm of E. coli, the pelB signal sequence (Lei S. P. et al.,
J. Bacteriol (1987) 169, 4379) can be used. Introduction of the
vector into a host cell can be carried out by using, for example,
the calcium chloride method and the electroporation method.
[0124] In addition to E. coli, for example, expression vectors
derived from mammals (e.g., pcDNA3 (Invitrogen) and pEGF-BOS
(Nucleic Acids Res. (1990) 18(17), p 5322), pEF and pCDM8),
expression vectors derived from insect cells (e.g., "Bac-to-BAC
baculovirus expression system" (GIBCO BRL) and pBacPAK8),
expression vectors derived from plants (e.g., pMH1 and pMH2),
expression vectors derived from animal viruses (e.g., pHSV, pMV and
pAdexLcw), expression vectors derived from retroviruses (e.g.,
pZIPneo), expression vectors derived from yeast (e.g., "Pichia
Expression Kit" (Invitrogen), pNV11 and SP-Q01), and expression
vectors derived from Bacillus subtilis (e.g., pPL608 and pKTH50)
can be used as the vector of the present invention.
[0125] For the purpose of expressing the vector in an animal cell
such as a CHO cell, a COS cell, an NIH3T3 cell or the like, it is
indispensable for the vector to have a promoter required for
expression in a cell such as SV40 promoter (Mulligan et al., Nature
(1979) 277, 108), MMTV-LTR promoter, EFl.alpha. promoter (Mizushima
et al., Nucleic Acids Res. (1990) 18, 5322), CMV promoter or the
like, and more preferably to have a marker gene (such as a drug
resistance gene that can be identified by a drug such as neomycin
or G418) for selecting transformation into the cell. Examples of
the vector having such characteristics include, for example, pMAM,
pDR2, pBK-RSV, pBK-CMV, pOPRSV and pOP13.
[0126] Further, for the purpose of stably expressing a gene and, at
the same time, amplifying the gene copy numbers in the cell, a
vector (e.g., pCHOI, etc.) having the DHFR gene is introduced into
the CHO cell deficient in the nucleic acid synthetic pathway to
complement the deficiency and is amplified with methotrexate (MTX).
In addition, for the purpose of transient expression of a gene,
transformation is effected with a vector (such as pcD) having the
origin of replication for SV40 using a COS cell having on the
chromosome a gene that expresses the SV40 T antigen. As the origin
of replication, the one derived from a polyoma virus, an
adenovirus, a bovine papilloma virus (BPV) and the like can also be
used. Further, for the amplification of gene copy numbers in the
host cell system, the expression vector can include, as a
selectable marker, the aminoglycoside transferase (APH) gene, the
thymidine kinase (TK) gene, E. coli xanthine guaninephosphoribosyl
transferase (Ecogpt) gene, the dihydrofolate reductase (dhfr) gene
and the like.
[0127] To prepare the antibody of the present invention, the vector
is introduced into a host cell. The host cell into which the vector
is introduced is not particularly limited, but includes, for
example, E. coli or any of various animal cells. For example, the
host cell can be used as a production system for the production or
expression of the antibody of the present invention. As for the
production system of polypeptide preparation, there are an in vitro
production system and an in vivo production system. In vitro
production system include a production system which employs
eukaryotic cells and a production system which employs prokaryotic
cells.
[0128] In the case where the eukaryotic cell is used, for example,
an animal cell, a plant cell or a fungal cell can be used. Known
animal cells include a mammalian cell such as a CHO cell (J. Exp.
Med. (1995) 108, 945), a COS cell, a 3T3 cell, a myeloma cell, a
baby hamster kidney (BHK) cell, a HeLa cell and a Vero cell, an
amphibian cell such as a Xenopus oocyte (Valle, et al., Nature
(1981) 291, 358-340), or an insect cell such as Sf9, Sf21, and Tn5.
In the present invention, CHO-DG44, CHO-DXB11, a COS7 cell, a BHK
cell are preferably used. Among the animal cells, for the purpose
of performing a large amount of expression, a CHO cell is
particularly preferred. Introduction of the vector into the host
cell can be carried out by, for example, the calcium phosphate
method, the DEAE-dextran method, the cationic ribosome DOTAP
(Boehringer Mannheim), the electroporation method, the lipofection
method or the like.
[0129] As for the plant cell, for example, a cell derived from
Nicotiana tabacum is known as a protein production system, which
may be subjected to callus culture. Examples of the fungal cells
include yeast such as the genus Saccharomyces, more specifically
Saccharomyces cerevistae and Saccharomyces pombe, and filamentous
fungi such as the genus Aspergillus, more specifically Aspergillus
niger.
[0130] In the case where the prokaryotic cell is used, production
system using a bacterial cell may be employed. Examples of the
bacterial cells include Escherichia coli (E. coli) such as JM109,
DH5.alpha. and HB101, and Bacillus subtilis.
Preparation of Recombinant Antibody
[0131] The antibody of the present invention can be prepared by
culturing the above-mentioned host cells. The antibody can be
obtained by culturing in vitro a cell transformed with a desired
polynucleotide. Cultivation can be carried out in accordance with a
known method. Culture media for animal cells include, for example,
DMEM, MEM, RPMI 1640, and IMDM. A serum supplement such as FBS or
fetal calf serum (FCS) may be used in combination, or serum-free
medium can be used. The pH during the cultivation is preferably
about 6 to 8. Cultivation is usually carried out at about 30 to
40.degree. C. for about 15 to 200 hours with, as needed, medium
change, aeration, and agitation.
[0132] On the other hand, systems for producing a polypeptide in
vivo include, for example, a production system which employs an
animal and a production system which employs a plant. The target
polynucleotide is introduced into such an animal or a plant, and
the polypeptide is produced in the body of the animal or the plant
and recovered. The term "host cell" as used herein encompasses such
an animal and a plant.
[0133] When the animal is used, production systems employing a
mammal or an insect are available. As the mammal, goats, pigs,
sheep, mice and cattle can be used (Vicki Glaser, SPECTRUM
Biotechnology Applications, 1993). A transgenic animal can also be
used as a mammal.
[0134] For example, the target polynucleotide is prepared as a
fusion gene with a gene encoding a polypeptide which is inherently
produced in the milk such as goat .beta. casein. Then, the DNA
fragment containing this fusion gene is injected into a goat
embryo, and the embryo is transplanted into a female goat. The
target antibody can be obtained from the milk produced by the
transgenic goat borne to the goat which received the embryo or the
offspring thereof. To increase the amount of milk containing the
antibody produced by the transgenic goat, hormone may be given to
the transgenic goat as needed. (Ebert, K. M. et al., Bio/Technology
(1994) 12, 699-702).
[0135] In addition, as an insect, for example, a silkworm can be
used. In the case where a silkworm is used, a silkworm is infected
with a baculovirus into which the polynucleotide encoding the
target antibody has been inserted. The target antibody can be
obtained from the body fluid of the silkworm (Susumu, M. et al.,
Nature (1985) 315, 592-594).
[0136] In the case where a plant is used, for example, tobacco can
be used. In the case where tobacco is used, a polynucleotide
encoding the target antibody is inserted into an expression vector
for a plant, for example pMON 530, and then the vector is
introduced into a bacterium such as Agrobacterium tumefaciens.
Then, tobacco such as Nicotiana tabacum is infected with the
bacterium, whereby the target antibody can be obtained from the
leaves of the tobacco (Julian, K.-C. Ma et al., Eur. J. Immunol.
(1994) 24, 131-138).
[0137] The thus obtained antibody can be isolated from the inside
or the outside (culture medium, etc.) of the host cell and then can
be purified to a substantially pure and uniform antibody.
Separation and purification of the antibody may be carried out by a
separation and a purification method usually used in purification
of polypeptides. For example, polypeptides can be separated and
purified by any methods including chromatography columns,
filtration, ultrafiltration, salting-out, solvent precipitation,
solvent extraction, distillation, immunoprecipitation,
SDS-polyacrylamide gel electrophoresis, isoelectric focusing,
dialysis, recrystallization, and a combination thereof.
[0138] Examples of the chromatography include, for example,
affinity chromatography, ion exchange chromatography, hydrophobic
chromatography, gel-filtration, reverse phase chromatography,
adsorption chromatography (Strategies for Protein Purification and
Characterization: A Laboratory Course Manual. Ed Daniel R. Marshak
et al., Cold Spring Harbor Laboratory Press, 1996). These
chromatographies can be carried out using a liquid phase
chromatography such as HPLC and FPLC. Examples of a column to be
used for affinity chromatography include a protein A column or a
protein G column. One example of the protein A column is Hyper D,
POROS, Sepharose F. F. (Pharmacia).
[0139] Further, before or after purification of the antibody, the
antibody can be modified or peptides can be partially removed as
needed by allowing a suitable protein-modifying enzyme to act on.
The protein-modifying enzyme for this purpose include, for example,
trypsin, chymotrypsin, lysyl endopeptidase, protein kinase,
glucosidase.
Diagnostic Method
[0140] In another aspect, the present invention provides a method
of diagnosing a disease such as cancer by detecting GPC3 protein in
a test sample with the use of the antibody of the present
invention.
[0141] The detection used herein includes quantitative detection
and non-quantitative detection. The non-quantitative detection
include, for example, determination of merely whether or not GPC3
protein is present, determination of whether or not a specific
amount or more of GPC3 protein is present, determination for
comparison of the amount of GPC3 protein with that of another
sample (e.g., a control sample). The quantitative detection
includes determination of the concentration of GPC3 protein,
determination of the amount of GPC3 protein.
[0142] The test sample is not particularly limited as long as it is
a sample that may possible contain GPC3 protein, however, preferred
is a sample collected from the body of a living organism such as a
mammal, and more preferred is a sample collected from human.
Specific examples of the test sample may include, for example,
blood, interstitial fluid, plasma, extravascular fluid, cerebral
fluid, joint fluid, pleural fluid, serum, lymph fluid, saliva,
preferably blood, serum and plasma. In addition, a sample obtained
from the test sample such as culture solution of cells collected
from the body of the living organism is also included in the test
sample of the present invention.
[0143] The cancer to be diagnosed is not particularly limited, and
specific examples may include liver cancer, pancreatic cancer, lung
cancer, colon cancer, mammary cancer, prostate cancer, leukemia and
lymphoma, preferably liver cancer. GPC3 to be detected is not
particularly limited, and may be either full-length GPC3 or a
fragment thereof. In the case where a fragment of GPC3 is detected,
it may be either the N-terminal fragment or the C-terminal
fragment, however, the N-terminal fragment is preferred. In
addition, the GPC3 protein may also be a heparan sulfate-added GPC3
or a GPC3 core protein.
[0144] The method of detecting GPC3 protein contained in a test
sample is not particularly limited, however, detection is
preferably performed by an immunological method with the use of an
anti-GPC3 antibody. Examples of the immunological method include,
for example, a radioimmunoassay, an enzyme immunoassay, a
fluorescence immunoassay, a luminescence immunoassay,
immunoprecipitation, a turbidimetric immunoassay. Preferred is an
enzyme immunoassay, and particularly preferred is an enzyme-linked
immunosorbent assay (ELISA) (e.g., a sandwich ELISA). The
above-mentioned immunological method such as an ELISA can be
carried out by a method known to those skilled in the art.
[0145] A general detection method with the use of an anti-GPC3
antibody comprises immobilizing an anti-GPC3 antibody on a support,
adding a test sample thereto, incubating the support to allow the
anti-GPC3 antibody and GPC3 protein to bind to each other, washing
the support, and detecting the GPC3 protein binding to the support
via the anti-GPC3 antibody to detect GPC3 protein in a test
sample.
[0146] The binding between the anti-GPC3 antibody and the GPC3
protein is generally carried out in a buffer. Buffers used in the
invention include, for example, a phosphate buffer, a Tris buffer.
Incubation is carried out under the conditions generally employed,
for example, at 4.degree. C. to room temperature for 1 hour to 24
hours. The washing after incubation can be carried out by any
method as long as it does not inhibit the binding between the GPC3
protein and the anti-GPC3 antibody, using for example a buffer
containing a surfactant such as Tween 20.
[0147] In the method of detecting GPC3 protein of the present
invention, a control sample may be provided in addition to a test
sample to be tested for GPC3 protein. The control samples include a
negative control sample that does not contain GPC3 protein and a
positive control sample that contains GPC3 protein. In this case,
it is possible to detect GPC3 protein in the test sample by
comparing the result obtained with the negative control sample that
does not contain GPC3 protein with the result obtained with the
positive control sample that contains GPC3 protein. It is also
possible to quantitatively detect GPC3 protein contained in the
test sample by obtaining the detection results of the control
samples and the test sample as numerical values, and comparing
these numerical values.
[0148] One preferred embodiment of detecting GPC3 protein binding
to the support via an anti-GPC3 antibody is a method using an
anti-GPC3 antibody labeled with a detectable label. For example,
GPC3 protein may be detected by contacting the test sample with an
anti-GPC3 antibody immobilized on the support, washing the support,
and then detecting GPC3 with the use of the labeled antibody that
specifically binds to GPC3 protein.
[0149] The labeling of an anti-GPC3 antibody can be carried out by
a generally known method. Examples of the detectable label known to
those skilled in the art include a fluorescent dye, an enzyme, a
coenzyme, a chemiluminescent substance or a radioactive substance.
Specific examples may include radioisotopes (.sup.32P, .sup.14C,
.sup.125I, .sup.3H, .sup.131I and the like), fluorescein,
rhodamine, dansyl chloride, umbelliferone, luciferase, peroxidase,
alkaline phosphatase, .beta.-galactosidase, .beta.-glucosidase,
horseradish peroxidase, glucoamylase, lysozyme, saccharide oxidase,
microperoxidase, biotin and the like. In the case where biotin is
used as a detectable label, it is preferred that a biotin-labeled
antibody is added, and then avidin conjugated to an enzyme such as
alkaline phosphatase is further added.
[0150] Specifically, a solution containing an anti-GPC3 antibody is
added to a support such as a plate to allow the anti-GPC3 antibody
to be immobilized. After washing, the plate is blocked with, for
example, BSA in order to prevent the nonspecific binding of a
protein. The plate is washed again, and then the test sample is
added to the plate. After being incubated, the plate is washed, and
then the labeled anti-GPC3 antibody is added. After being incubated
appropriately, the plate is washed, and then the labeled anti-GPC3
antibody remaining on the plate is detected. The detection of the
protein can be carried out by a method known to those skilled in
the art. For example, in the case where the antibody is labeled
with a radioactive substance, the protein may be detected by liquid
scintillation or the RIA method. In the case where the antibody is
labeled with an enzyme, the protein may be detected by adding a
substrate and detecting an enzymatic change of the substrate such
as color development with an absorbance reader. In the case where
the antibody is labeled with a fluorescent substance, the protein
may be detected with the use of a fluorometer.
[0151] A particularly preferred embodiment of the method of
detecting GPC3 protein of the present invention is a method using
an anti-GPC3 antibody labeled with biotin and avidin. Specifically,
a solution containing an anti-GPC3 antibody is added to a support
such as a plate to allow the anti-GPC3 antibody to be immobilized
thereon. After washing, the plate is blocked with, for example, BSA
in order to prevent the nonspecific binding of a protein, The plate
is washed again, and then the test sample is added to the plate.
After being incubated, the plate is washed, and then the
biotin-labeled anti-GPC3 antibody is added. After being incubated
appropriately, the plate is washed, and then avidin conjugated to
an enzyme such as alkaline phosphatase or peroxidase is added.
After being incubated, the plate is washed, and then a substrate of
the enzyme conjugated to avidin is added. Then, GPC3 protein is
detected by means of the enzymatic change of the substrate as an
indicator.
[0152] Another embodiment of the method of detecting GPC3 protein
of the present invention is a method using a primary antibody that
specifically binds to GPC3 protein and a secondary antibody that
specifically binds to the primary antibody. For example, the test
sample is brought into contact with an anti-GPC3 antibody
immobilized on the support, the support is incubated and washed,
and the bound GPC3 protein after washing is detected with a primary
anti-GPC3 antibody and a secondary antibody that specifically binds
to the primary antibody. In this case, the secondary antibody is
preferably labeled with a detectable label.
[0153] Specifically, a solution containing an anti-GPC3 antibody is
added to a support such as a plate to allow the anti-GPC3 antibody
to be immobilized thereon. After washing, the plate is blocked
with, for example, BSA in order to prevent the nonspecific binding
of a protein. The plate is washed again, and then the test sample
is added to the plate. After being incubated, the plate is washed,
and then a primary anti-GPC3 antibody is added. After being
incubated appropriately, the plate is washed, and then a secondary
antibody that specifically binds to the primary antibody is added.
After being incubated appropriately, the plate is washed, and then
the secondary antibody remaining on the plate is detected. The
detection of the secondary antibody can be carried out by the
above-mentioned method.
Pharmaceutical Composition
[0154] In another aspect, the present invention provides a
pharmaceutical composition containing the antibody of the present
invention. The pharmaceutical composition containing the antibody
of the present invention is useful in the treatment and/or
prevention of a disease associated with cell proliferation such as
cancer, and particularly it is useful in the treatment and/or
prevention of liver cancer. In the case where the antibody of the
present invention is used as a pharmaceutical composition, the
antibody can be formulated into a dosage form by a method known to
those skilled in the art. For example, the pharmaceutical
composition can be used parenterally in the form of an injection of
a sterile solution or a suspension with water or another
pharmaceutically acceptable solution. For example, the antibody can
be formulated into a dosage form by appropriately mixing it with a
pharmaceutically acceptable carrier or solvent, such as sterile
water, physiological saline, a plant-oil, an emulsifier, a
suspension, a surfactant, a stabilizer, a flavor, an excipient, a
vehicle, a preservative, a binder to prepare a unit dosage form
required for generally accepted Drug Implementation. The amount of
active ingredients in these preparations is selected to allow for
administration of a suitable dosage within the indicated range.
[0155] A sterile composition for injection can be formulated by
using a vehicle such as distilled water for injection in accordance
with the general Drug Implementation.
[0156] Examples of the aqueous solution for injection include, for
example, physiological saline, glucose, and other isotonic liquids
including adjuvants, such as D-sorbitol, D-mannose, D-mannitol and
sodium chloride. They can be used in combination with a suitable
solubilizer, such as an alcohol, specifically ethanol, a
polyalcohol such as propylene glycol and polyethylene glycol, and a
non-ionic surfactant such as Polysorbate 80.TM. and HCO-50.
[0157] Sesame oil or soybean oil can be used as a oleaginous liquid
and may be used in combination with benzyl benzoate or benzyl
alcohol as a solubilizer. It may be formulated with a buffer such
as a phosphate buffer or a sodium acetate buffer, a pain-killer
such as procaine hydrochloride, a stabilizer such as benzyl alcohol
or phenol, or an antioxidant. The prepared injection is generally
filled into a suitable ampule.
[0158] The method of administration is preferably parenteral, and
specific examples thereof include injection, transnasal
administration, transpulmonary administration, transdermal
administration and the like. The injection formulation may be
administered systemically or topically by intravenous injection,
intramuscular injection, intraperitoneal injection, subcutaneous
injection or the like.
[0159] The method of administration can be appropriately selected
according to the age and the symptoms of a patient. For example,
one dose of the pharmaceutical composition containing the antibody
or the polynucleotide encoding the antibody can be selected from
the range of 0.0001 mg to 1,000 mg per kg of body weight.
Alternatively, for example, the dose can be selected from the range
of 0.001 mg to 100,000 mg/body per patient, although it is not
always limited to these numerical values. The dose and the method
of administration vary according to the body weight, the age and
the symptoms of a patient, and are appropriately selected by those
skilled in the art.
[0160] All patents and references cited in this specification are
incorporated by reference. All the contents disclosed in the
specifications and drawings of Japanese Patent Application No.
2004-203637, on which the application claims priority, are
incorporated herein by reference.
EXAMPLES
[0161] The present invention will be described in more detail with
reference to Examples below. However, the present invention is not
limited to these Examples.
Example 1
cDNA Cloning of Human Glypican 3 (GPC3)
[0162] A full-length cDNA encoding human GPC3 was amplified by PCR
reaction with an Advantage 2 kit (CLONTECH) using 1st stranded cDNA
prepared by a usual method from a colon cancer cell line, Caco2, as
a template. More specifically, 50 .mu.L of a reaction mixture
containing 2 .mu.L of cDNA derived from Caco2, 1 .mu.L of a sense
primer (GATATC-ATGGCCGGGACCGTGCGCACCGCGT: SEQ ID NO: 1), 1 .mu.L of
an antisense primer (GCTAGC-TCAGTGCACCAGGAAGAAGAAGCAC: SEQ ID NO:
2), 5 .mu.L of Advantage 2 10.times.PCR buffer, 8 .mu.L of dNTP mix
(1.25 mM) and 1.0 .mu.L of Advantage polymerase Mix was subjected
to 35 cycles consisting of 94.degree. C. for 1 minute, 63.degree.
C. for 30 seconds and 68.degree. C. for 3 minutes. The amplified
product from the PCR reaction was inserted into a TA vector, pGEM-T
Easy, using pGEM-T Easy Vector System I (Promega). The sequence was
confirmed by using an ABI 3100 DNA sequencer. In this way, a cDNA
encoding full-length human GPC3 was isolated. The sequence shown in
SEQ ID NO: 3 indicates the nucleotide sequence of human GPC3 gene
and the sequence shown in SEQ ID NO: 4 indicates the amino acid
sequence of human GPC3 protein.
Example 2
Preparation of Soluble Form of GPC3
[0163] As immunoprotein for the generation of an anti-GPC3
antibody, a soluble form of GPC protein was prepared, in which a
hydrophobic region at the C-terminal side (564-580 amino acids) was
deleted.
[0164] By using the full-length human GPC3 cDNA as a template, a
PCR reaction was carried out using an antisense primer (ATA GAA TTC
CAC CAT GGC CGG GAC CGT GCG C: SEQ ID NO: 5) and a sense primer, to
which an EcoRI recognition sequence and a Kozak sequence were
added, (ATA GGA TCC CTT CAG CGG GGA ATG AAC GTT C: SEQ ID NO: 6).
The obtained PCR fragment (1711 bp) was cloned into pCXND2-Flag.
The pCXND2-Flag was designed to express a Flag-tagged protein by
inserting the region for DHFR gene expression of pCHOI (Hirata et
al., FEBS letter 1994; 356; 244-248) into the HindIII site of pCXN2
(Nivea et al., Gene 1991; 108; 193-199) and adding a Flag tag
sequence to the downstream of the multicloning site. The
constructed expression plasmid DNA was introduced into a CHO cell
line, DXB11, and a CHO cell line highly expressing the soluble form
of GPC3 was obtained by selection with 500 .mu.g/mL Geneticin. The
large-scale cultivation of the CHO cell line highly expressing the
soluble form of GPC3 was carried out using a 1700-cm.sup.2 roller
bottle, and the culture supernatant was recovered for the antibody
purification. The culture supernatant was applied to a DEAE
sepharose Fast Flow column (Amersham) and, after washing, the
antibody was eluted with a buffer containing 500 mM NaCl, and
affinity purified using Anti-Flag M2 agarose affinity gel (SIGMA).
The elution was carried out with 200 .mu.g/mL FLAG peptide. After
the eluate was concentrated with Centriprep-10 (Millipore), FLAG
peptide was removed by gel filtration using Superdex 200 HR 10/30
(Amersham). Lastly, the filtrate was concentrated using a DEAE
sepharose Fast Flow column and eluted with PBS (containing 500 mM
NaCl) without Tween 20 to effect buffer exchange.
Example 3
Preparation of Soluble Form of GPC3 Core Protein
[0165] GPC3 is modified by heparan sulfate to become a
macromolecule. To eliminate an antibody against heparan sulfate in
a screening for an anti-GPC3 antibody, a soluble form of GPC3 core
protein that had a point mutation in the heparan sulfate-binding
site was prepared and used in the screening.
[0166] Using the above-mentioned soluble form of GPC3 (1-563) as a
template, a cDNA in which Ser residues at the 495th and 509th
positions were replaced with Ala was prepared by the assembly PCR
method, in which primers were designed to add His tag to the
C-terminus. The obtained cDNA was cloned into pCXND3 vector. The
pCXND3 was constructed by inserting the DHFR gene expressing region
of pCHOI in the HindIII site of pCXN2. The constructed expression
plasmid DNA was introduced into DXB11 cell line and a CHO cell line
highly expressing a soluble form of GPC3 core protein was obtained
by selection with 500 .mu.g/mL Geneticin.
[0167] The large-scale cultivation was carried out using a
1700-cm.sup.2 roller bottle and the culture supernatant was
recovered for antibody purification. The culture supernatant was
applied to a Q sepharose Fast Flow column (Amersham). After
washing, the antibody was eluted with a phosphate buffer containing
500 mM NaCl, and affinity purified using a Chelating sepharose Fast
Flow column (Amersham). The antibody was eluted with a gradient of
10 to 150 mM imidazole. Lastly, the eluate was concentrated using a
Q sepharose Fast Flow column and, eluted with a phosphate buffer
containing 500 mM NaCl.
[0168] SDS polyacrylamide gel electrophoresis under reducing
conditions showed three bands of 70 kDa, 40 kDa and 30 kDa. The
result of amino acid sequencing using an ABI492 protein sequencer
(Applied Biosystems) indicated that the 30 kDa band corresponded to
the amino acid sequence of the 359th and its downstream or the
375th and its downstream of GPC3, suggesting that GPC3 was cleaved
between Arg358 and Ser359 or between Lys374 and Val375, hence, it
was separated into 40 kDa of the N-terminal fragment and 30 kDa of
the C-terminal fragment.
Example 4
Preparation of CHO Cell Line Expressing Full-Length Human GPC3
[0169] To obtain a cell line for evaluating a binding activity
using flow cytometry, a CHO cell line expressing full-length GPC3
was established.
[0170] Ten microgram of a full-length human GPC3 gene expression
vector and 60 .mu.L of SuperFect (QIAGEN) were mixed. After a
complex was formed, gene introduction was carried out by adding it
to a CHO cell line, DXB11. After a 24-hour cultivation in a
CO.sub.2 incubator, selection was started using .alpha.MEM (GIBCO
BRL) containing Geneticin at a final concentration of 0.5 mg/mL and
10% FBS. The resulting Geneticin-resistant colonies were collected
and cell cloning was carried out by the limiting dilution method.
Each cell clone was solubilized and the expression of full-length
human GPC3 was confirmed by Western blotting using an anti-GPC3
antibody. In this way, a stably expressing cell line was
obtained.
Example 5
Evaluation of Binding Activity by ELISA
[0171] The soluble form of GPC3 core protein was diluted to 1
.mu.g/mL with a coating buffer (0.1 mol/L NaHCO.sub.3 (pH 9.6),
0.02% (w/v) NaN.sub.3) and added to an immunoplate and left at
4.degree. C. overnight to coat the plate. After the plate was
blocked with a dilution buffer (50 mmol/L Tris-HCl (pH 8.1), 1
mmol/L MgCl.sub.2, 150 mmol/L NaCl, 0.05% (v/v) Tween 20, 0.02%
(w/v) NaN.sub.3, 1% (w/v) BSA), an anti-GPC3 antibody was added and
left at room temperature for 1 hour. After washing with a rinse
buffer (0.05% (v/v) Tween 20, PBS), an anti-mouse IgG antibody
(ZYMED) labeled with alkaline phosphatase was added and left at
room temperature for 1 hour. After washing with the rinse buffer,
SIGMA 104 (SIGMA) diluted to 1 mg/mL with a substrate buffer (50
mmol/L NaHCO.sub.3 (pH 9.8), 10 mmol/L MgCl.sub.2) was added and
left at room temperature for 1 hour for color development. Then the
absorbance (at 405 nm, reference wavelength of 655 nm) was measured
using a Benchmark Plus (BIO-RAD).
Example 6
Immunization with Soluble Form of GPC3 and Selection of
Hybridoma
[0172] Since human GPC3 and mouse GPC3 show a high homology of 94%
at the amino acid level, it was considered difficult to obtain an
anti-GPC3 antibody if a normal mouse was immunized. Therefore, an
autoimmune disease mouse, MRL/MpJUmmCrj-lpr/lpr mouse, (hereinafter
referred to as MRL/lpr mouse, purchased from Charles River Japan,
Inc.) was used as an immunized animal. Immunization was started at
the age of 7 weeks or 8 weeks. For the first immunization, a
soluble form of GPC3 was prepared at 100 .mu.g/head and emulsified
using Freund's complete adjuvant (FCA, Becton Dickinson) and
subcutaneously administered. Two weeks later, a soluble form of
GPC3 was prepared at 50 .mu.g/head and emulsified using Freund's
incomplete adjuvant (FIA, Becton Dickinson) and subcutaneously
administered. After that, an additional immunization was carried
out every other week for 5 times in total. To two of the immunized
mice, a soluble form of GPC3 was diluted with PBS to 50 .mu.g/head,
and then administered intravenously via the tail as the final
immunization. On the forth day after the final immunization, the
spleen was excised to obtain a spleen cell, which was mixed with a
mouse myeloma cell, P3-X63Ag8U1 (P3U1, purchased from ATCC), at a
ratio of 2:1. Cell fusion was carried out by gradually adding PEG
1500 (Roche Diagnostic). RPMI 1640 medium (GIBCO BRL) was carefully
added to dilute PEG 1500, and after PEG 1500 was removed by
centrifugation, the cells were suspended in RPMI 1640 medium
containing 10% FBS and inoculated into a 96-well culture plate at
100 .mu.L/well. On the next day, RPMI 1640 medium containing 10%
FBS, 1.times.HAT media supplement (SIGMA) and 0.5.times.BM-Condimed
H1 Hybridoma cloning supplement (Roche Diagnostic) (hereinafter
referred to as HAT medium) was added at 100 .mu.L/well. After 2, 3
and 5 days, half of the culture solution was replaced with the HAT
medium. After 7 days, screening was carried out using the culture
supernatant. The screening was carried out by an ELISA using an
immunoplate coated with the soluble form of GPC3 core protein. A
positive clone was monocloned by the limiting dilution method. As a
result, 11 clones of antibodies (M3C11, M13B3, M1E7, M3B8, M11F1,
L9G11, M19B11, M6B1, M18D4, M5B9 and M10D2) that have a strong
binding activity against GPC3 were obtained.
Example 7
Isotype Determination and Purification of Anti-GPC3 Antibody
[0173] Isotype was determined by an antigen-dependent ELISA using
an Immunopure Monoclonal Antibody Isotyping Kit I (PIERCE). The
purification of antibodies was carried out as follows. The culture
supernatant of hybridoma cultured with the HAT medium supplemented
with FBS (Ultra low IgG) (GIBCO BRL) was adsorbed to Hi Trap
ProteinG HP (Amersham), and washed with a binding buffer (20 mM
sodium phosphate (pH 7.0)). The antibody was eluted with an elution
buffer (0.1 M glycine-HCl (pH 2.7)). The eluate was immediately
neutralized with a neutralization buffer (1 M Tris-HCl (pH 9.0)),
and dialyzed against PBS for day and night for buffer exchange.
Example 8
Evaluation of Binding Activity by ELISA
[0174] In order to conveniently evaluate the binding activity of
the anti-GPC3 antibody thus obtained, concentration-dependent
binding of the antibody was detected against an immunoplate
containing the soluble form of GPC3 core protein immobilized
thereon. A 3-fold dilution series (12 dilutions in total) of the
purified antibody at a concentration of 10 .mu.g/mL was added, and
an anti-mouse IgG antibody was added as the secondary antibody.
Color development was carried out using SIGMA 104. Since the degree
of color development varies depending on the color development
time, data measured precisely after 1 hour was analyzed. Every
antibody showed a concentration-dependent color development. The
correlation between the concentration of antibody and the degree of
color development was plotted and an approximate curve was obtained
by using an analyzing software, GraphPad Prism. Its EC50 value was
determined as the index of the binding activity. EC50 values for
all clones are shown in FIG. 16.
Example 9
Evaluation of Binding Activity by Flow Cytometry
[0175] Cells were dissociated with 1 mM EDTA pH 8.0 (GIBCO)/PBS and
suspended in FACS buffer (1% FBS/PBS) at 1.times.10.sup.6 cells/mL.
The suspension was dispensed to a Multiscreen-HV Filter Plate
(Millipore) at 100 .mu.L/well and the supernatant was removed by
centrifugation. An anti-GPC3 antibody diluted to an appropriate
concentration was added and reacted on ice for 30 minutes. The
cells were washed once with FACS buffer and an FITC-labeled
anti-mouse IgG antibody was added and reacted on ice for 30
minutes. After the reaction, the cells were centrifuged at 500 rpm
for 1 minute, and the supernatant was removed. The cells were
suspended in 400 .mu.L of FACS buffer and subjected to flow
cytometry. EPICS ELITE ESP (Beckman Coulter) was used as a flow
cytometer. A gate was set on the living cell population with the
histogram of forward scatter and side scatter. As shown in FIG. 1,
an anti-GPC3 antibody (M3C11, M11F1) bound strongly to the CHO cell
expressing GPC3 and did not bind to the parent CHO cell, indicating
that the antibody specifically binds to GPC3 presented on the cell
membrane. In addition, the antibody showed the binding activity to
a hepatoma cell line, HepG2 (purchased from ATCC) and HuH-7
(purchased from Health Science Research Resources Bank), suggesting
that the antibody may specifically recognize hepatoma. The binding
activity of the clones derived from the mouse immunized with a
soluble form of GPC3 measured by flow cytometry is shown in FIG.
16, where the X-mode values of histogram at the concentration of
antibody of 5 .mu.g/mL are indicated.
Example 10
Epitope Classification by Competitive ELISA
[0176] The obtained antibodies were classified according to the
epitopes by a competitive ELISA. The antibodies were biotinylated
using a Biotin Labeling Kit (Roche). The soluble form of GPC3 core
protein was diluted to 1 .mu.g/mL with the coating buffer and added
to a plate at 100 .mu.L/well and stored at 4.degree. C. overnight
to coat the plate. On the next day, 200 .mu.L of the substrate
buffer was added for blocking. The plate was left at 4.degree. C.
overnight or longer and an anti-GPC3 antibody was added to the
plate at 100 .mu.L/well and reacted at room temperature for 1 hour.
After that, without washing of the plate, 10 .mu.L of 10 .mu.g/mL
biotin-labeled anti-GPC3 antibody was added and further reacted for
1 hour. The plate was washed with 300 .mu.L/well of the rinse
buffer for 3 times. AP-streptavidin conjugate (ZYMED) was diluted
to 1000-fold with the dilution buffer and added at 100 .mu.L/well
and reacted at room temperature for 1 hour. The plate was washed
with 300 .mu.L/well of the rinse buffer for 5 times. SIGMA 104 was
diluted to 1 mg/mL with the substrate buffer and added at 100
.mu.L/well. After incubating for 1 hour at room temperature, the
absorbance (at 405 nm, reference wavelength of 655 nm) was
measured.
[0177] The results of the competitive ELISA are shown in FIG. 2. As
for the antibody that competitively inhibited the binding of the
biotinylated antibody by 50% or more, it was considered that its
epitopes are located close together in the three-dimensional
conformation. As a result of classification according to the
competitive inhibition pattern of color development against the
binding of the 8 types of biotinylated antibodies, the 11 clones
derived from the mouse immunized with a soluble form of GPC3 were
classified into 5 groups (a, b, c, d and e) (FIG. 16).
Example 11
Epitope Classification by Western Blotting
[0178] The soluble form of GPC3 core protein was applied to a 10%
SDS-PAGE mini (TEFCO) and electrophoresed under reducing
conditions. It was transferred to Immobilon-P (Millipore) using
Trans-Blot SD Semi-Dry Electrophoretic Transfer Cell (BIO-RAD).
After the membrane was briefly washed with TBS-T (0.05% Tween 20,
TBS), it was shaken in TBS-T containing 5% skim milk for 1 hour.
The membrane was shaken in TBS-T for about 10 minutes, then each
anti-GPC3 antibody diluted with TBS-T containing 1% skim milk was
added and the membrane was shaken for 1 hour. The membrane was
washed with TBS-T and shaken in a solution of HRP-anti-mouse IgG
antibody (Amersham) diluted with TBS-T containing 1% skim milk for
1 hour, and then washed with TBS-T. Color development was carried
out using ECL-Plus (Amersham) and detected using Hyperfilm ECL
(Amersham).
[0179] As shown in FIG. 3, L9G11 was determined to be an antibody
binding to the N-terminal side because it bound to the band of
about 40 kDa. M3C11 was determined to be an antibody binding to the
C-terminal side because it bound to the band of about 30 kDa. All
the antibodies belonging to c, d or e group based on the
competitive ELISA bound to the N-terminal side, and all those
belonging to a or b groups bound to the C-terminal side (FIG. 16).
L9G11 had higher detection sensitivity in Western blotting than the
other antibodies that bind to the N-terminal side, suggesting that
this antibody is a useful for detecting the N-terminal fragment by
Western blotting.
Example 12
Detection of Secreted Form of GPC3
[0180] Since it was found that GPC3 is cleaved at the 358th amino
acid residue or the 374th amino acid residue, the inventors
hypothesized that a secreted form of GPC3 is secreted into the
blood of a patient with liver cancer. Therefore, a GPC3 sandwich
ELISA system was constructed in order to detect a secretory form of
GPC3.
[0181] An immunoplate was coated with an anti-GPC3 antibody at 10
.mu.g/mL and blocked by the substrate buffer. After the immunoplate
was stored for several hours at room temperature or overnight at
4.degree. C., the culture supernatant of HepG2 was added and
incubated for 1 hour at room temperature. The immunoplate was
washed with 300 .mu.L/well of the rinse buffer for 3 times, and a
biotin-labeled anti-GPC3 antibody diluted to 10 .mu.g/mL was added
and incubated for 1 hour at room temperature. The immunoplate was
washed with 300 .mu.L/well of the rinse buffer for 3 times, and
AP-streptavidin was added and incubated for 1 hour at room
temperature. The immunoplate was washed with 300 .mu.L/well of the
rinse buffer for 5 times. Color development was carried out using
AMPAK (DAKO) in accordance with the attached protocol and the
absorbance was measured using a microplate reader. The antibodies
binding to the N-terminal side (M6B1, M19B11 and M18D4) and those
binding to the C-terminal side (M3C11, M13B3 and M3B8) were
combined to construct five sandwich ELISA systems. Each of these
combinations showed an equivalent sensitivity in the standard curve
using the secreted form of GPC3. These systems were evaluated using
the culture supernatant of HepG2. The secreted form of GPC3 was
detected at a high concentration of about 1 .mu.g/mL with a
combination of the antibodies binding to the N-terminal side (FIG.
4). The concentration detected with a combination of the antibodies
binding to the C-terminal side was low, suggesting that the
N-terminal fragment was dominantly present in the secreted form of
GPC3.
[0182] Subsequently, the culture supernatant of HepG2 was
immunoprecipitated using an anti-GPC3 antibody to detect the
secreted form of GPC3. In the case where M10D2 that binds to the
N-terminal fragment was used, the secreted form of GPC3 of 40 kDa
was detected (FIG. 5). On the other hand, in the case where M1E7
that binds to the C-terminal fragment was used, the secreted form
of GPC3 was not detected. The immunoprecipitation test was carried
out for all the obtained GPC3 antibodies. Every antibody binding to
the N-terminal fragment strongly detected the secreted form of
GPC3, while the secreted form of GPC3 was not detected or was
weakly detected with the use of the antibodies binding to the
C-terminal fragment (FIG. 16). The antibody that can detect the
secreted form of GPC3 by immunoprecipitation is expected to be
useful as an antibody for diagnosing hepatoma. In addition, the
antibody that can hardly detect the secreted form of GPC3 is
expected to be useful in the development of a therapeutic antibody
having an ADCC activity and a CDC activity, because such an
antibody may migrate to the hepatoma lesion without being trapped
in the secreted form of GPC3 present in the blood.
Example 13
Cloning of Variable Region of Anti-GPC3 Antibody
[0183] A variable region of the anti-GPC3 antibody was amplified by
the RT-PCR method using the total RNA extracted from an anti-GPC3
antibody-producing hybridoma. The total RNA was extracted from
1.times.10.sup.7 cells of the hybridoma with the use of RNeasy
Plant Mini Kits (QIAGEN). By using 1 .mu.g of the total RNA, the
5'-terminal gene fragment was amplified with the use of a SMART
RACE cDNA Amplification Kit (CLONTECH) and any of the following
synthetic oligonucleotides:
a synthetic oligonucleotide MHC-IgG1 complementary to the sequence
of a mouse IgG1 constant region:
TABLE-US-00002 GGG CCA GTG GAT AGACAG ATG; (SEQ ID NO: 7)
a synthetic oligonucleotide MHC-IgG2a complementary to the sequence
of a mouse IgG2a constant region:
TABLE-US-00003 CAG GGG CCA GTG GAT AGA CCG ATG; (SEQ ID NO: 8)
a synthetic oligonucleotide MHC-IgG2b complementary to the sequence
of a mouse IgG2b constant region:
TABLE-US-00004 CAG GGG CCA GTG GAT AGA CTG ATG; (SEQ ID NO: 9)
and a synthetic oligonucleotide kappa complementary to the sequence
of a mouse kappa chain constant region:
TABLE-US-00005 GCT CAC TGG ATG GTG GGA AGA TG. (SEQ ID NO: 10)
[0184] A reverse transcription reaction was carried out at
42.degree. C. for 1 hour and 30 minutes. The PCR mixture (50 .mu.L)
contained 5 .mu.L of 10.times. Advantage 2 PCR buffer, 5 .mu.L of
10.times. Universal Primer A Mix, 0.2 mM dNTPs (dATP, dGTP, dCTP
and dTTP), 1 .mu.L of Advantage 2 Polymerase Mix (all from
CLONTECH), 2.5 .mu.L of the reverse transcription reaction product
and 10 pmol of the synthetic oligonucleotide MHC-IgG1, MHC-IgG2a,
MHC-IgG2b or kappa. PCR was carried out with 5 cycles consisting of
94.degree. C. for 30 seconds, 94.degree. C. for 5 seconds and
72.degree. C. for 3 minutes, 5 cycles consisting of 94.degree. C.
for 5 seconds, 70.degree. C. for 10 seconds and 72.degree. C. for 3
minutes, and 25 cycles consisting of 94.degree. C. for 5 seconds,
68.degree. C. for 10 seconds and 72.degree. C. for 3 minutes.
Lastly, the reaction product was heated at 72.degree. C. for 7
minutes. Each PCR product was purified from the agarose gel using a
QIAquick Gel Extraction Kit (QIAGEN), cloned into pGEM-T Easy
vector (Promega), and the nucleotide sequence was determined.
[0185] The nucleotide sequences of the H chain variable regions of
M3C11, M13B3, M1E7, M3B8, M11F1, M19B11, M6B1, M18D4, M5B9, M10D2
and L9G11 are shown in SEQ ID NOs: 11, 12, 13, 14, 15, 16, 17, 18,
19, 20 and 21, respectively, the amino acid sequences thereof are
shown in SEQ ID NOs: 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 and 32,
respectively. The nucleotide sequences of the L chain variable
regions thereof are shown in SEQ ID NOs: 33, 34, 35, 36, 37, 38,
39, 40, 41, 42 and 43, respectively, and the amino acid sequences
thereof are shown in SEQ ID NOs: 44, 45, 46, 47, 48, 49, 50, 51,
52, 53 and 54, respectively.
Example 14
Epitope Classification Using GST-Fusion Protein
[0186] To carry out a detail analysis of the epitopes for the
antibodies binding to the C-terminal fragment, fusion proteins of
successively shortened C-terminal peptides of GPC3 with GST, namely
GC-1 (from Ser495 to Lys563), GC-2 (from Gly510 to Lys563), GC-3
(from Ala524 to Lys563), GC-4 (from Gly537 to Lys563) and GC-5
(from Ser550 to Lys563) were prepared. The C-terminal region of
GPC3 was cloned into pGEX-4T-3 (Amersham) to construct a plasmid
DNA in which the C-terminal region of GPC3 is ligated to the
C-terminal side of GST. The plasmid DNA was introduced into
DH5.alpha., whereby a transformant was obtained. Then, IPTG was
added at 1 mM to a culture of the transformant in the logarithmic
growth phase to induce the expression of a GST-fusion protein. The
bacterial cells were collected after 2 hours cultivation. The cells
were homogenized by sonication, and centrifuged at 35,000 rpm for
30 minutes with XL-80 ultracentrifuge (Beckman, 70.1 Ti rotor).
Then, the culture supernatant was recovered and purified with GST
Purification Modules (Amersham). The thus purified GST-fusion
proteins were separated by SDS-PAGE under reducing conditions, and
Western blotting was carried out with the anti-GPC3 antibodies
(FIG. 6). M3C11 and M1E7 detected GC-1 and GC-2, while they did not
detect GC-3, GC-4 and GC-5, indicating that the epitopes of these
antibodies are contained in the region of GC-2, and that the region
of GC-3 is not sufficient. M3B8 and M11F1 detected GC-1 GC-2, GC-3
and GC-4, while they did not detect GC-5, indicating that the
epitopes of these antibodies are contained in the region of GC-4,
and that the region of GC-5 is not sufficient. The minimum region
of the GST-fusion protein to which each antibody can bind is listed
in the column headed "Western blotting" of FIG. 16.
Example 15
Preparation of Anti-GPC3 Mouse-Human Chimeric Antibody
[0187] The sequences of the H chain and the L chain variable
regions of the anti-GPC3 antibodies were ligated to the sequences
of a human IgG1 and a kappa chain constant regions. PCR was carried
out by using a synthetic oligonucleotide, which is complementary to
the 5'-terminal nucleotide sequence of the H chain variable region
of each antibody and has a Kozak sequence, and a synthetic
oligonucleotide, which is complementary to the 3'-terminal
nucleotide sequence and has a NheI site. The obtained PCR product
was cloned into pB-CH vector in which a human IgG1 constant region
was inserted into pBluescript KS(+) vector (Toyobo). The mouse H
chain variable region and the human H chain (.gamma.1 chain)
constant region are ligated via the NheI site. The prepared H chain
gene fragment was cloned into an expression vector, pCXND3. On the
other hand, PCR was carried out by using a synthetic
oligonucleotide, which is complementary to the 5'-terminal
nucleotide sequence of the L chain variable region of each antibody
and has a Kozak sequence, and a synthetic oligonucleotide, which is
complementary to the 3'-terminal nucleotide sequence and has a
BsiWI site. The obtained PCR product was cloned into pB-CL vector
in which the human kappa chain constant region was inserted into
pBluescript KS(+) vector (Toyobo). The human L chain variable
region and the constant region are ligated via the BsiWI site. The
prepared L chain gene fragment was cloned into an expression
vector, pUCAG. This pUCAG vector was obtained by cloning a 2.6 kbp
fragment obtained by digesting pCXN (Nivea et al., Gene 1991; 108:
193-200) with a restriction enzyme BamHI into the BamHI site of
pUC19 vector (Toyobo).
[0188] To prepare an expression vector for an anti-GPC3 mouse-human
chimeric antibody, a gene fragment was obtained by digesting the
pUCAG vector containing the L chain gene fragment with a
restriction enzyme HindIII (Takara Shuzo), and cloned into the
HindIII site of the pCXND3 containing the H chain gene. This
plasmid will express a neomycin-resistance gene, DHFR gene and an
anti-GPC3 mouse-human chimeric antibody in an animal cell.
[0189] A CHO cell line (DG44 cell line) stably expressing the
antibody was prepared as follows. The gene was introduced into the
cells by the electroporation method using Gene Pulser II (Bio-Rad).
A mixture obtained by mixing 2 .mu.g of the expression vector for
each anti-GPC3 mouse-human chimeric antibody and 0.75 mL of a
solution of CHO cells suspended in PBS (1.times.10.sup.7 cell/mL)
was cooled on ice for 10 minutes, and transferred to a cuvette.
Then, a pulse was applied at 1.5 kV and a capacitance of 25 .mu.FD.
After a 10-minute recovery period at room temperature, the
electroporated cells were suspended in 40 mL of CHO-S-SFM II medium
(Invitrogen) containing 1.times.HT supplement (Invitrogen). The
suspension was diluted to 50-fold with the same medium, and
dispensed to a 96-well culture plate at 100 .mu.L/well. After a
24-hour culture in a CO.sub.2 incubator (5% CO.sub.2), Geneticin
(Invitrogen) was added at 0.5 mg/mL and the cells were cultured for
2 weeks. The culture supernatant was taken from the well having a
Geneticin resistant transformed cell colony and the amount of IgG
was measured by the concentration determination method described
below. A high-producing cell line was successively expanded to
obtain a cell line that stably expresses an anti-GPC3 mouse-human
chimeric antibody. The cell line was cultured at a large-scale and
the culture supernatant was collected. The purification of each
anti-GPC3 mouse-human chimeric antibody was carried out using Hi
Trap ProteinG HP (Amersham).
Example 16
Measurement of Complement-Dependent Cytotoxicity Activity (CDC
Activity)
16.1 Preparation of Human Albumin Veronal Buffer (HAVB)
[0190] In milli-Q water, 12.75 g of NaCl (highest grade, Wako Pure
Chemicals), 0.5625 g of Na-Barbital (highest grade, Wako Pure
Chemicals) and 0.8625 g of Barbital (highest grade, Wako Pure
Chemicals) were dissolved to a final volume of 200 mL and
autoclaved at 121.degree. C. for 20 minutes. Then, 100 mL of
autoclaved hot milli-Q water was added. The pH was 7.43
(recommended pH: 7.5). The solution was used as a 5.times. veronal
buffer. In 50 mL of milli-Q water, 0.2205 g of CaCl.sub.2.2H.sub.2O
(highest grade, Junsei Chemical) was dissolved to a final
concentration of 0.03 mol/L, which was used as a CaCl.sub.2
solution. In 50 mL of milli-Q water, 1.0165 g of
MgCl.sub.2.6H.sub.2O (highest grade, Junsei Chemical) was dissolved
to a final concentration of 0.1 mol/L, which was used as a
MgCl.sub.2 solution. In milli-Q water, 100 mL of the 5.times.
veronal buffer, 4 mL of human serum albumin (25% Buminate
(registered trademark), the concentration of human serum albumin:
250 mg/mL, Baxter Healthcare), 2.5 mL of the CaCl.sub.2 solution,
2.5 mL of the MgCl.sub.2 solution, 0.1 g of KCl (highest grade,
Junsei Chemical) 0.5 g of glucose (D(+)-glucose, anhydrous glucose,
highest grade, Wako Pure Chemicals) were dissolved to a final
volume of 500 mL, which was used as HAVB. After filter
sterilization, the HAVB was stored at a preset temperature of
5.degree. C.
16.2 Preparation of Target Cell
[0191] The CHO cell expressing full-length human GPC3 prepared in
Example 4 was cultured in .alpha.-MEM medium containing nucleic
acid (+) (GIBCO) supplemented with 10% FBS and 0.5 mg/mL Geneticin
(GIBCO). The cells were dissociated from the dish using a cell
dissociation buffer (Invitrogen Corp), dispensed to each well of a
96-well flat-bottomed plate (Falcon) at 1.times.10.sup.4
cells/well, and cultured for 3 days. After the cultivation, 5.55
MBq of chromium-51 was added, and the cells were cultured in a 5%
carbon dioxide gas incubator at 37.degree. C. for 1 hour. These
cells were washed with HAVB twice, and 50 .mu.L of HAVB was added
and used as a target cell.
16.3 Chromium Release Test (CDC Activity)
[0192] Each chimeric antibody was diluted with HAVB to make a 40
.mu.g/mL antibody solution. To the target cell, 50 .mu.L of each
antibody solution was added, and left on ice for 15 minutes.
Subsequently, to each well, 100 .mu.L of the human serum from the
peripheral blood of a healthy volunteer, which had been diluted
with HAVB, was added to a final concentration of 25% (the final
concentration of antibody: 10 .mu.g/mL), and left in a 5% carbon
dioxide gas incubator at 37.degree. C. for 90 minutes. After the
plate was centrifuged, 100 .mu.L of the supernatant was collected
from each well, the radioactivity was measured using a gamma
counter. The specific chromium release rate was obtained by the
following formula.
Specific chromium release rate (%)=(A-C).times.100/(B-C)
"A" represents the radioactivity (cpm) in each well, "B" represents
the mean value of the radioactivities (cpm) in the wells in which
100 .mu.L of 2% NP-40 aqueous solution (Nonidet P-40, Code No.
252-23, Nacalai Tesque) and 50 .mu.L of HAVB were added to the
target cell, and "C" represents the mean value of the
radioactivities (cpm) in the wells in which 150 .mu.L of HAVB was
added to the target cell. The test was carried out in triplicate
and the mean value and the standard deviation were calculated for
CDC activity (%).
[0193] The results are shown in FIG. 7. Among 9 types of the
anti-GPC3 chimeric antibodies, M3B8 and M11F1, which are an
antibody recognizing the C-terminal side, showed a strong CDC
activity against the CHO cell expressing GPC3, however, the CDC
activity was not observed in the other antibodies. M3B8 and M11F1
belong to the group called "b" based on the competitive ELISA, and
an important epitope for showing a strong CDC activity could be
found.
Example 17
Measurement of ADCC Activity Using PBMC Derived from Human
Peripheral Blood
[0194] 17.1 Preparation of Human PBMC Solution
[0195] The heparinized peripheral blood obtained from a healthy
volunteer was diluted to 2-fold with PBS(-), and overlayered on
Ficoll-Paque.TM. PLUS (Amersham). After centrifugation at
500.times.g for 30 minutes at 20.degree. C., the middle layer,
which is the mononuclear leukocyte fraction, was collected. The
cells were washed 3 times, suspended in 10% FBS/RPMI and used as a
human PBMC solution.
17.2 Preparation of Target Cell
[0196] The HepG2 cells cultured in 10% FBS/RPMI 1640 medium were
dissociated from the dish using Trypsin-EDTA (Invitrogen),
dispensed to each well of a 96-well U-bottomed plate (Falcon) at
1.times.10.sup.4 cells/well, and cultured for 2 days. The CHO cell
expressing full-length human GPC3 prepared in Example 4 was
cultured in .alpha.-MEM nucleic acids (+) medium (GIBCO)
supplemented with 10% FBS and 0.5 mg/mL Geneticin (GIBCO). The
cells were dissociated from the dish using a cell dissociation
buffer (Invitrogen Corp), dispensed to each well of a 96-well
flat-bottomed plate (Falcon) at 1.times.10.sup.4 cells/well, and
cultured for 3 days. Chromium-51 (5.55 MBq) was added to each cell
and the cells were cultured in a 5% carbon dioxide gas incubator at
37.degree. C. for 1 hour. These cells were washed with the medium
once, and 50 .mu.L of 10% FBS/RPMI 1640 medium was added and used
as a target cell.
17.3 Chromium Release Test (ADCC Activity)
[0197] To the target cell, 50 .mu.L of an antibody solution
prepared at different concentrations was added, and reacted on ice
for 15 minutes. Subsequently, 100 .mu.L of the human PBMC solution
was added at 5.times.10.sup.5 cells/well, and cells were cultured
in a 5% carbon dioxide gas incubator at 37.degree. C. for 4 hours.
After the cultivation, the plate was centrifuged, and the
radioactivity in 100 .mu.L of the culture supernatant was measured
using a gamma counter. The specific chromium release rate was
obtained by the following formula.
specific chromium release rate (%)=(A-C).times.100/(B-C)
"A" represents the mean value of the radioactivities (cpm) in each
well, "B" represents the mean value of the radioactivities (cpm) in
the wells in which 100 .mu.L of 2% NP-40 aqueous solution (Nonidet
P-40, Code No. 252-23, Nacalai Tesque) and 50 .mu.L of 10% FBS/RPMI
medium were added to the target cell, and "C" represents the mean
value of the radioactivities (cpm) in the wells in which 150 .mu.L
of 10% FBS/RPMI medium was added to the target cell. The test was
carried out in triplicate and the mean value and the standard
deviation were calculated for ADCC activity (%). The results are
shown in FIG. 8. Among 9 types of the anti-GPC3 chimeric
antibodies, the antibodies recognizing the C-terminal side had a
tendency of showing a strong ADCC activity.
Example 18
Immunization with GC-3 and Selection of Hybridoma
[0198] Among the obtained anti-GPC3 antibodies, only M11F1 and M3B8
showed a strong CDC activity, indicating that the CDC activity is
epitope dependent. To obtain an antibody having both ADCC activity
and CDC activity, a GST-fusion protein containing the epitope for
M11F1 and M3B8, referred to as GC-3, was used for immunization. A
large mount of GC-3 was purified by the above-mentioned method. The
buffer was changed to PBS by gel filtration using Superdex 75
(Amersham). The obtained product was used as immunoprotein. using
three Balb/c mice (purchased from Charles River Japan, Inc.) and
three MRL/lpr mice were immunized with GC-3 in accordance with the
above-mentioned method. For the first immunization, GC-3 was
prepared at 100 .mu.g/head and emulsified using FCA, which was
subcutaneously administered. Two weeks later, GC-3 was prepared at
50 .mu.g/head and emulsified using FIA, which was subcutaneously
administered. After the fifth immunization, the final immunization
(50 .mu.g/head) was carried out for all mice by intravenously
administering the immunoprotein via the tail. After cell fusion,
hybridoma were screened by an ELISA using an immunoplate coated
with the soluble form of GPC3 core protein. A positive clone was
monocloned by the limiting dilution method. As a result, 5 clones
of antibodies (GC199, GC202, GC33, GC179 and GC194) that have a
strong binding activity against GPC3 were obtained.
[0199] The antibody was purified from the culture supernatant of
the hybridoma using Hi Trap proteinG HP, and analyzed in accordance
with the above-mentioned method. The EC50 value was calculated by
an ELISA using an immunoplate coated with the soluble form of GPC3
core protein, and the X-mode value of histogram at 5 .mu.g/mL was
measured by flow cytometry (FIG. 17). According to the epitope
classification by a competitive ELISA, the antibodies were
classified into the group b (GC199, GC202 and GC33) and a new
epitope group f (GC179 and GC194). The epitope classification using
the GST-fusion proteins indicated that GC199, GC202 and GC33
detected GC-1, GC-2, GC-3 and GC-4, but did not detect GC-5,
suggesting that the epitopes for these antibodies are contained in
the region of GC-4 in the same manner as the epitopes for M11F1 and
M3B8, and that the region of GC-5 is not sufficient. On the other
hand, GC179 and GC194 detected GC-1, GC-2 and GC-3, but did not
detect GC-4 and GC-5, suggesting that the epitopes for these
antibodies are contained in the region of GC-3, and that the region
of GC-4 is not sufficient. The minimum region of the GST-fusion
protein to which each antibody can bind is listed in the column
headed "Western blotting" of FIG. 17.
[0200] The H chain and the L chain variable regions of GC199,
GC202, GC33, GC179 and GC194 were cloned in accordance with the
above-mentioned method, and their sequences were determined. As for
the L chain of GC194, 2 types of sequences were cloned. The
nucleotide sequences of the H chain variable regions of GC199,
GC202, GC33, GC179 and GC194 are shown in SEQ ID NOs: 55, 56, 57,
58 and 59, respectively, and the amino acid sequences thereof are
shown in SEQ ID NOs: 60, 61, 62, 63 and 64, respectively. The
nucleotide sequences of the L chain variable regions of GC199,
GC202, GC33, GC179, GC194(1) and GC194(2) are shown in SEQ ID NOs:
65, 66, 67, 68, 69 and 70 respectively, and the amino acid
sequences thereof are shown in SEQ ID NOs: 71, 72, 73, 74, 75 and
76, respectively.
[0201] Further, these amino acid sequences were examined for
homology by comparing with the database of the amino acid sequences
of known antibodies, whereby their CDR regions were determined as
follows.
TABLE-US-00006 Antibody CDR Amino Acid Sequence SEQ ID NO M13B3 (H)
CDR1 NYAMS 103 CDR2 AINNNGDDTYYLDTVKD 104 CDR3 QGGAY 105 M3B8 (H)
CDR1 TYGMGVG 106 CDR2 NIWWYDAKYYNSDLKS 107 CDR3 MGLAWFAY 108 M11F1
(H) CDR1 IYGMGVG 109 CDR2 NIWWNDDKYYNSALKS 110 CDR3 IGYFYFDY 111
M5B9 (H) CDR1 GYWMH 112 CDR2 AIYPGNSDTNYNQKFKG 113 CDR3 SGDLTGGLAY
114 M6B1 (H) CDR1 SYAMS 115 CDR2 AINSNGGTTYYPDTMKD 116 CDR3
HNGGYENYGWFAY 117 M10D2 (H) CDR1 SYWMH 118 CDR2 EIDPSDSYTYYNQKFRG
119 CDR3 SNLGDGHYRFPAFPY 120 L9G11 (H) CDR1 SYWMH 118 CDR2
TIDPSDSETHYNLQFKD 121 CDR3 GAFYSSYSYWAWFAY 122 GC33 (H) CDR1 DYEMH
123 CDR2 ALDPKTGDTAYSQKFKG 124 CDR3 FYSYTY 125 GC179 (H) CDR1 INAMN
126 CDR2 RIRSESNNYATYYGDSVKD127 CDR3 EVTTSFAY 128 GC194 (H) CDR1
ASAMN 129 CDR2 RIRSKSNNYAIYYADSVKD 130 CDR3 DPGYYGNPWFAY 131 GC199
(H) CDR1 DYSMH 132 CDR2 WINTETGEPTYADDFKG 133 CDR3 LY 134 GC202 (H)
CDR1 TYGMGVG 106 CDR2 NIWWHDDKYYNSALKS 135 CDR3 IAPRYNKYEGFFAF 136
M13B3 (L) CDR1 KSSQSLLDSDGKTYLN 137 CDR2 LVSKLDS 138 CDR3 WQGTHFPLT
139 M3B8 (L) CDR1 KASQDINNYLS 140 CDR2 RANRLVD 141 CDR3 LQCDEFPPWT
142 M11F1 (L) CDR1 RSSQSLVHSNGNTYLH 143 CDR2 KVSNRFS 144 CDR3
SQSTHVPWT 145 M5B9 (L) CDR1 RSSKSLLHSNGITYLY 146 CDR2 QMSNLAS 147
CDR3 AQNLELPYT 148 M6B1 (L) CDR1 KASQDINKNII 149 CDR2 YTSTLQP 150
CDR3 LQYDNLPRT 151 M10D2 (L) CDR1 RASHSISNFLH 152 CDR2 YASQSIS 153
CDR3 QQSNIWSLT 154 L9G11 (L) CDR1 RASESVEYYGTSLMQ 155 CDR2 GASNVES
156 CDR3 QQSRKVPYT 157 GC33 (L) CDR1 RSSQSLVHSNGNTYLH 143 CDR2
KVSNRFS 144 CDR3 SQNTHVPPT 158 GC179 (L) CDR1 KSSKSLLHSNGNTYLN 159
CDR2 WMSNLAS 160 CDR3 MQHIEYPFT 161 GC194 (L) 1 CDR1
RSSKSLLHSYDITYLY 162 CDR2 QMSNLAS 147 CDR3 AQNLELPPT 163 GC194 (L)
2 CDR1 SASSSVSYMY 164 CDR2 DTSNLAS 165 CDR3 QQWSSYPLT 166 GC199 (L)
CDR1 KSSQSLLHSDGKTFLN 167 CDR2 LVSRLDS 168 CDR3 CQGTHFPRT 169 GC202
(L) CDR1 RSSQSIVHSNGNTYLE 170 CDR2 KVSNRFS 144 CDR3 FQGSHVPWT
171
Example 19
Measurement of ADCC Activity Using Mouse Bone Marrow Derived
Effector Cell
19.1 Preparation of Mouse Bone Marrow Derived Effector Cell
Solution
[0202] Bone marrow cells were collected from the femur of an SCID
mouse (CLEA Japan, Inc., male, 10 weeks old), and suspended in 10%
FBS/RPMI 1640 medium at 5.times.10.sup.5 cells/mL. Mouse GM-CSF
(PeproTech) and human IL-2 (PeproTech) were added at 10 ng/mL and
50 ng/mL, respectively, and the cells were cultured in a 5% carbon
dioxide gas incubator at 37.degree. C. for 5 days. After the
cultivation, the cells were scraped off with a scraper and washed
with the medium once. Then, the cells were suspended in 10%
FBS/RPMI 1640 medium at 5.times.10.sup.6 cells/mL, and used as a
mouse bone marrow derived effector cell solution.
19.2 Preparation of Target Cell
[0203] A human hepatoma cell line, HuH-7, was maintained and
subcultured with DMEM medium (SIGMA) containing 10% FBS
(ThermoTrace). The cells were dissociated from the dish using Cell
Dissociation Buffer (Invitrogen), dispensed to each well of a
96-well U-bottomed plate (Falcon) at 1.times.10.sup.4 cells/well,
and cultured for 1 day. After the cultivation, 5.55 MBq of
chromium-51 was added, and the cells were cultured in a 5% carbon
dioxide gas incubator at 37.degree. C. for 1 hour. These cells were
washed with the medium once, and 50 .mu.L of 10% FBS/RPMI 1640
medium was added and used as a target cell.
19.3 Chromium Release Test (ADCC Activity)
[0204] To the target cell, 50 .mu.L of an antibody solution
prepared at different concentrations was added, and reacted on ice
for 15 minutes. Subsequently, 100 .mu.L of the mouse bone marrow
derived effector cell solution (5.times.10.sup.5 cells/well) was
added, and cells were cultured in a 5% carbon dioxide gas incubator
at 37.degree. C. for 4 hours. After the cultivation, the plate was
centrifuged, and the radioactivity in 100 .mu.L of the culture
supernatant was measured using a gamma counter. The specific
chromium release rate was obtained by the following formula.
Specific chromium release rate (%)=(A-C).times.100/(B-C)
"A" represents the mean value of the radioactivities (cpm) in each
well, "B" represents the mean value of the radioactivities (cpm) in
the wells in which 100 .mu.L of 2% NP-40 aqueous solution (Nonidet
P-40, Code No. 252-23, Nacalai Tesque) and 50 .mu.L of 10% FBS/RPMI
medium were added to the target cell, and "C" represents the mean
value of the radioactivities (cpm) in the wells in which 150 .mu.L
of 10% FBS/RPMI medium was added to the target cell. The test was
carried out in triplicate and the mean value and the standard
deviation were calculated for ADCC activity (%).
[0205] The results are shown in FIG. 9. It was revealed that GC33
antibody shows an ADCC activity when the concentration of antibody
is 0.1 .mu.g/mL or higher, and shows stronger activity than GC199
antibody.
Example 20
Antitumor Activity of GC33 Antibody to Mouse Model Transplanted
with Human Hepatoma
[0206] 20.1 Preparation of Mouse Model Transplanted with Human
Hepatoma
[0207] A human hepatoma cell line, HuH-7, was prepared at
5.times.10.sup.7 cells/mL in a solution containing DMEM medium and
MATRIGEL (BD Bioscience) at a ratio of 1:1. On the previous day,
100 .mu.L of an anti-asialo GM1 antibody solution (Wako Pure
Chemicals, one vial was dissolved with 1 mL of distilled water for
injection then added 4 mL of physiologic saline) was
intraperitoneally administered to a SCID mouse (male, 5 weeks old,
CLEA Japan, Inc.). The mouse was transplanted with 100 .mu.L of the
above-mentioned cell suspension (5.times.10.sup.6 cells/mouse)
subcutaneously in the abdominal area.
20.2 Preparation and Administration of Antibody
[0208] Starting from the day 20 after the cell transplantation, an
antibody solution prepared on the day of administration at 0.5
mg/mL (group of administration of 5 mg/kg) and at 0.1 mg/mL (group
of administration of 1 mg/kg) with PBS(-) was administered to the
mouse model transplanted with a human hepatoma cells at 10 mL/kg
via the tail vein once a week for 3 weeks. As a negative control,
PBS(-) (vehicle) was administered at 10 mL/kg via the tail vein
once a week for 3 weeks in a similar manner. Both groups consisted
of 6 mice each.
20.3 Evaluation of Antitumor Effect
[0209] The antitumor effect of GC33 antibody on the mouse model
transplanted with human hepatoma cells was evaluated with the
change in tumor volume with time and tumor weight at 1 week after
the final administration. The tumor volume was calculated by the
following formula.
Tumor volume=(major axis).times.(minor axis).times.(minor
axis)/2
[0210] As shown in FIG. 10, a significant inhibition of tumor
growth was observed in the GC33 antibody group compared with the
vehicle group.
[0211] Consequently, GC33 was shown to have an antitumor effect on
the mouse model transplanted with a human hepatoma cells.
Example 21
Preparation of GC33 Mouse-Human Chimeric Antibody
[0212] The H chain and the L chain of GC33 were amplified by PCR
using a synthetic oligonucleotide, which is complementary to the
5'-terminal nucleotide sequences and has a Kozak sequence and a
HindIII site, and a synthetic oligonucleotide, which is
complementary to the 3'-terminal nucleotide sequences and has a
BamHI site. After digestion with HindIII and BamHI, the obtained
PCR product was cloned into an expression vector, HEFg.gamma.1, in
which a human IgG1 constant region was inserted, and an expression
vector, HEFg.kappa., in which a human kappa chain constant region
was inserted (Sato et al., Mol. Immunol. 1994; 371-381). The
vectors were introduced into a CHO cell (DG44 cell line) in
accordance with the above-mentioned method, and a stably expressing
cell line was established. The antibody was purified from the
culture supernatant using Hi Trap ProteinG HP (Amersham). The
concentration of IgG in the culture supernatant was measured by a
human IgG sandwich ELISA using goat anti-human IgG (BIOSOURCE) and
goat anti-human IgG alkaline phosphatase conjugate (BIOSOURCE), and
the concentration was determined by the comparison with a
commercially available human IgG (Cappel).
Example 22
Measurement of CDC Activity and ADCC Activity Using GC33
Mouse-Human Chimeric Antibody
[0213] In accordance with the methods described in Examples 16 and
17, the CDC activities and ADCC activities of GC33, M3C11 and M1E7
mouse-human chimeric antibodies were measured. As for the target
cell, the CHO cell expressing full-length GPC3 was used for
measuring the CDC activity and HepG2 was used for measuring the
ADCC activity. The results are shown in FIG. 11 and FIG. 12,
respectively. It was revealed that, in either test system, GC33
shows a strong CDC activity and ADCC activity compared with the
other two antibodies.
Example 23
Epitope Analysis for GC33
[0214] To determine the epitope for GC33 in detail, fusion proteins
of a further shorter C-terminal peptide of GPC3 and GST were
prepared, and analyzed by Western blotting. The prepared
GPC3-derived peptide sequences contained in the GST-fusion protein
are shown in FIG. 13. Since GC33 can bind to GC-4 (aa 537-563), but
cannot bind to GC-5 (aa 550-563), it was considered that the
epitope is located in a region containing at least part of the aa
537-550 region. First, the
TABLE-US-00007 peptides GC-6 (G N S Q Q A T P K D N E I S (SEQ ID
NO: 93)), GC-7 (G N S Q Q A T P (SEQ ID NO: 94)), GC-8 (Q Q A T P K
D N (SEQ ID NO: 95)) and GC-9 (T P K D N E I S (SEQ ID NO: 96))
were prepared. A forward oligo DNA and a reverse oligo DNA were
prepared which were designed in such a manner that the cleavage
site of EcoRI recognition sequence is attached to the 5' end and
the cleavage site of SalI recognition sequence is attached to the
3' end, respectively. The synthesis of the oligo DNAs was done by
Espec Oligo Service. The DNA was purified with C-18 cartridge,
phosphorylated at the 5' end and used for the analysis. Twenty-five
microliters of the forward oligo DNA (10 .mu.M) and 25 .mu.L of the
reverse oligo DNA (10 .mu.M) were mixed and reacted at 94.degree.
C. for 5 minutes, at 37.degree. C. for 10 minutes, and at room
temperature for 15 minutes, then left at 4.degree. C. for 10
minutes to anneal the forward oligo DNA and the reverse oligo DNA.
The concentration of the oligos was determined by the absorbance
measurement at the molar ratio of the insert to the vector of 3:1.
The oligos were cloned into EcoRI- and SalI-digested pGEX4T-3, and
the nucleotide sequence was confirmed. A GST-fusion protein was
prepared in accordance with the above-mentioned method, and
purified using Gluthatione Sepharose 4B. The purified proteins were
separated by SDS-PAGE under reducing conditions, and analyzed by
Western blotting using GC33. As a result, the antibody GC33 could
not detect any GST-fusion protein strongly, suggesting that a
longer sequence at the C-terminal side is needed for the binding of
GC33 (FIG. 14). Based on the above prediction,
TABLE-US-00008 GC-11 (A T P K D N E I S T (SEQ ID NO: 97)), GC-12
(P K D N E I S T F H (SEQ ID NO: 98)), GC-13 (D N E I S T F H N L
(SEQ ID NO: 99)) and GC-14 (E I S T F H N L G N (SEQ ID NO:
100))
were prepared and evaluated in the same manner. As a result, GC-11,
GC-12 and GC-13 bound to GC33 more strongly, suggesting that the
epitope for GC33 is located in the sequence from 544th to 553rd (P
K D N E I S T F H) at the C-terminus of GPC3.
Example 24
Humanization of GC33
[0215] Antibody sequence data were obtained from publicly disclosed
Kabat Database (File Transfer Protocol server
ftp.ebi.ac.uk/pub/databases/kabat/) and from ImMunoGeneTics
Database (IMGT). The H chain variable region and the L chain
variable region were separately subjected to homology search. As a
result, the H chain variable region was found to have a high
homology with DN13 (Smithson et al., Mol. Immunol. 1999; 36:
113-124), and the L chain variable region was found to have a high
homology with homo sapiens IGK mRNA for immunoglobulin kappa light
chain VLJ region, partial cds, clone: K64 of the accession number
of AB064105. The signal sequence of the accession number of S40357
that has a high homology with AB064105 was used as a signal
sequence of the L chain. The complementarity determining region
(hereinafter referred to as CDR) of GC33 were transplanted into the
frame work regions (hereinafter referred to as FR) of these human
antibodies to prepare a humanized antibody.
[0216] Specifically, synthetic oligo DNAs of approximately 50 bases
were designed in such a manner that approximately 20 bases of them
were hybridized and these synthetic oligo DNAs were assembled
together by the PCR method to prepare genes encoding each of the
variable regions. They were digested at the HindIII site inserted
in the end of the 5'-terminal synthetic oligo DNA and the BamHI
site inserted in the end of the 3'-terminal synthetic oligo DNA.
The fragments were cloned into an expression vector, HEFg.gamma.1,
in which a human IgG constant region was cloned, or an expression
vector, HEFg.kappa.1, in which a human kappa chain constant region
was cloned (Sato et. al., Mol. Immunol. 1994; 371-381). The H chain
and the L chain of the humanized GC33 constructed as above were
named ver.a, respectively. The binding activity of the humanized
GC33, whose H chain and the L chain were both ver.a (ver.a/ver.a),
was lower than that of an antibody with mouse GC33 variable regions
(mouse/mouse). Antibodies were constructed in which the mouse GC33
sequence and the ver.a sequence were chimerically combined
(mouse/ver.a, ver.a/mouse) with regard to the H chain and the L
chain, and their binding activities were evaluated. As a result, a
decrease in binding activity was observed in ver.a/mouse,
indicating that the decrease in binding activity due to amino acid
replacement was attributed to the H chain (FIG. 15). Then, modified
H chains, ver.c, ver.f, ver.h, ver.i, ver.j, ver.k were prepared.
All these humanized GC33 showed a binding activity equivalent to
that of a chimeric antibody having the mouse GC33 variable region
(FIG. 15). The nucleotide sequences of the humanized GC33H chain
variable regions, ver.a, ver.c, ver.f, ver.h, ver.i, ver.j, ver.k
were shown in SEQ ID NOs: 77, 78, 79, 80, 81, 82 and 83,
respectively, and the amino acid sequences thereof were shown in
SEQ ID NOs: 84, 85, 86, 87, 88, 89 and 90, respectively. The
nucleotide sequence and the amino acid sequence of a humanized GC33
L chain variable region, ver.a are shown in SEQ ID NOs: 91 and 92,
respectively. In humanized GC33H chain variable regions ver.i,
ver.j and ver.k, the 6th glutamic acid residue is replaced with
glutamine residue. The heat stability of these antibodies was
significantly increased.
Example 25
Modification of Humanized GC33 L Chain
[0217] As for the deamidation of protein, the reaction rate
constant of deamidation is known to be dependent on the primary
sequence. It is also known that Asn-Gly is particularly susceptible
to deamidation (Rocinson et. al., Proc. Natl. Acad. Sci. USA 2001;
98; 944-949). As for Asn33 in the CDR1 of a humanized GC33 L chain
ver.a shown in SEQ ID NO: 91, the primary sequence is Asn-Gly,
which is predicted to be very susceptible to deamidation.
[0218] To evaluate the effect of deamidation of Asn33 on the
binding activity, a modified antibody was prepared in which Asn33
was replaced with Asp. A point mutation was introduced using a
Quick Change Site-Directed Mutagenesis Kit (Stratagene) was used.
More specifically, 50 .mu.L of a reaction mixture containing 125 ng
of a sense primer (CTT GTA CAC AGT GAC GGA AAC ACC TAT: SEQ ID NO:
172), 125 ng of an antisense primer (ATA GGT GTT TCC GTC ACT GTG
TAC AAG: SEQ ID NO: 173), 5 .mu.L of 10.times. reaction buffer, 1
.mu.L of dNTP mix, 10 ng of HEFg.kappa. into which a humanized GC33
L chain ver.a had been cloned and 1 .mu.L of Pfu Turbo DNA
Polymerase was subjected to PCR of 12 cycles consisting of
95.degree. C. for 30 seconds, 55.degree. C. for 1 minute and
68.degree. C. for 9 minutes. Subsequently, a restriction enzyme,
DpnI, was added and digestion was carried out at 37.degree. C. for
2 hours, and the digested product was introduced into XL1-Blue
competent cell attached to the kit, whereby a transformant was
obtained. The variable region was cleaved out from the clone in
which each mutation was properly introduced, and cloned into
HEFg.kappa. again. It was introduced into a COS7 cell using Fugene
6 (Roche) together with HEFg.gamma.1, in which a humanized GC33H
chain ver.k had been cloned. The antibody transiently expressed in
the cell was recovered from the culture supernatant. The
concentration of antibody was determined by a sandwich ELISA using
the anti-human IgG antibody. The binding activity of the modified
antibody was evaluated by an ELISA using an immunoplate coated with
the soluble form of GPC3 core protein. As shown in FIG. 18, the
binding activity was lost in the modified antibody (N33D) in which
Asn33 had been replaced with Asp, suggesting that the effect of the
deamidation of Asn33 on the binding activity was significant.
[0219] As a method of suppressing deamidation of Asn33, replacement
of Gly34 with another amino acid has been reported (International
Patent Application WO 03057881A1). In accordance with the
above-mentioned method, G34 was replaced with any of 17 amino acids
other than Cys and Met using a Quick Change Site-Directed
Mutagenesis Kit to prepare a series of modified antibodies, namely,
G34A, G34D, G34E, G34F, G34H, G34N, G34P, G34Q, G34I, G34K, G34L,
G34V, G34W, G34Y, G34R, G34S and G34T. These antibodies were
transiently expressed in COS7 cells, and the binding activity was
evaluated using the culture supernatant. It was found that the
binding activity is maintained even if G34 is replaced with another
amino acid, except for Pro (G34P) and Val (G34V).
[0220] The amino acid sequences of the light chain CDR1 of the
above-mentioned modified antibodies are shown in SEQ ID NO: 174
(G34A), SEQ ID NO: 175 (G34D), SEQ ID NO: 176 (G34E), SEQ ID NO:
177 (G34F), SEQ ID NO: 178 (G34H), SEQ ID NO: 179 (G34N), SEQ ID
NO: 180 (G34T), SEQ ID NO: 181 (G34Q), SEQ ID NO: 182 (G34I), SEQ
ID NO: 183 (G34K), SEQ ID NO: 184 (G34L), SEQ ID NO: 185 (G34S),
SEQ ID NO: 186 (G34W), SEQ ID NO: 187 (G34Y), SEQ ID NO: 188
(G34R), SEQ ID NO: 189 (G34V) and SEQ ID NO: 190 (G34P),
respectively. The amino acid sequences of the light chain variable
regions of the above-mentioned modified antibodies are shown in SEQ
ID NO: 191 (G34A), SEQ ID NO: 192 (G34D), SEQ ID NO: 193 (G34E),
SEQ ID NO: 194 (G34F), SEQ ID NO: 195 (G34H), SEQ ID NO: 196
(G34N), SEQ ID NO: 197 (G34T), SEQ ID NO: 198 (G34Q), SEQ ID NO:
199 (G34I), SEQ ID NO: 200 (G34K), SEQ ID NO: 201 (G34L), SEQ ID
NO: 202 (G34S), SEQ ID NO: 203 (G34W), SEQ ID NO: 204 (G34Y), SEQ
ID NO: 205 (G34R), SEQ ID NO: 206 (G34V) and SEQ ID NO: 207 (G34P),
respectively.
[0221] The antibody of the present invention can be used as a cell
growth inhibitor, an anticancer agent or an agent for diagnosis of
cancers.
Example 26
Preparation of Human Hepatoma Cell Line (SK-03) Expressing
Full-Length Human GPC3
[0222] To obtain a cell line for evaluating a biological activity
of the anti-GPC3 antibodies, a human hepatoma cell line expressing
full-length GPC3 was established.
[0223] One microgram of a full-length human GPC3 gene expression
vector treated with Pvu I was mixed with 2 .mu.L of FuGENE (Roche)
to allow for complex formation. The complex was added to SK-HEP-1
cells (purchased from ATCC) for gene introduction. After incubation
in CO2 incubator for 24 hours, GPC3 expressing cells were selected
using Dulbecco's MEM (D-MEM, SIGMA) containing Geneticin at a final
concentration of 1 mg/mL and 10% FBS. The resulting
Geneticin-resistant colonies were collected and cell cloning was
carried out by the limiting dilution method. The expression of
human GPC3 of each cell clone was assayed by flow cytometry using
the chimeric antibody GC33 and FITC-labeled goat anti-human IgG
antibody (ICN). In this way, a stably expressing cell line SK-03
was obtained.
Example 27
Comparison of CDC Activity and ADCC Activity of Mouse-Human
Chimeric Antibodies
[0224] In order to directly compare the CDC activity and ADCC
activity of the mouse-human chimeric antibodies GC33, M3C11, and
M1E7 described in Example 22, the CDC activity and ADCC activity of
three antibodies were measured in the same test system according to
the method described in Examples 16 and 17. As for the target cell,
the CHO cell expressing full-length GPC3 was used for measuring the
CDC activity and SK-03 was used for measuring the ADCC activity.
The results are shown in FIG. 19 and FIG. 20, respectively. It was
revealed that, in either test system, GC33 shows a stronger CDC
activity and ADCC activity compared with the other two
antibodies.
INDUSTRIAL APPLICABILITY
[0225] The antibody of the present invention can be used as a cell
growth inhibitor, an anticancer agent and an agent for diagnosis of
cancers.
Sequence CWU 1
1
207131DNAArtificial SequencePCR primer 1gatatcatgg ccgggaccgt
gcgcaccgcg t 31231DNAArtificial SequencePCR primer 2gctagctcag
tgcaccagga agaagaagca c 3131743DNAHomo sapiens 3atggccggga
ccgtgcgcac cgcgtgcttg gtggtggcga tgctgctcag cttggacttc 60ccgggacagg
cgcagccccc gccgccgccg ccggacgcca cctgtcacca agtccgctcc
120ttcttccaga gactgcagcc cggactcaag tgggtgccag aaactcccgt
gccaggatca 180gatttgcaag tatgtctccc taagggccca acatgctgct
caagaaagat ggaagaaaaa 240taccaactaa cagcacgatt gaacatggaa
cagctgcttc agtctgcaag tatggagctc 300aagttcttaa ttattcagaa
tgctgcggtt ttccaagagg cctttgaaat tgttgttcgc 360catgccaaga
actacaccaa tgccatgttc aagaacaact acccaagcct gactccacaa
420gcttttgagt ttgtgggtga atttttcaca gatgtgtctc tctacatctt
gggttctgac 480atcaatgtag atgacatggt caatgaattg tttgacagcc
tgtttccagt catctatacc 540cagctaatga acccaggcct gcctgattca
gccttggaca tcaatgagtg cctccgagga 600gcaagacgtg acctgaaagt
atttgggaat ttccccaagc ttattatgac ccaggtttcc 660aagtcactgc
aagtcactag gatcttcctt caggctctga atcttggaat tgaagtgatc
720aacacaactg atcacctgaa gttcagtaag gactgtggcc gaatgctcac
cagaatgtgg 780tactgctctt actgccaggg actgatgatg gttaaaccct
gtggcggtta ctgcaatgtg 840gtcatgcaag gctgtatggc aggtgtggtg
gagattgaca agtactggag agaatacatt 900ctgtcccttg aagaacttgt
gaatggcatg tacagaatct atgacatgga gaacgtactg 960cttggtctct
tttcaacaat ccatgattct atccagtatg tccagaagaa tgcaggaaag
1020ctgaccacca ctattggcaa gttatgtgcc cattctcaac aacgccaata
tagatctgct 1080tattatcctg aagatctctt tattgacaag aaagtattaa
aagttgctca tgtagaacat 1140gaagaaacct tatccagccg aagaagggaa
ctaattcaga agttgaagtc tttcatcagc 1200ttctatagtg ctttgcctgg
ctacatctgc agccatagcc ctgtggcgga aaacgacacc 1260ctttgctgga
atggacaaga actcgtggag agatacagcc aaaaggcagc aaggaatgga
1320atgaaaaacc agttcaatct ccatgagctg aaaatgaagg gccctgagcc
agtggtcagt 1380caaattattg acaaactgaa gcacattaac cagctcctga
gaaccatgtc tatgcccaaa 1440ggtagagttc tggataaaaa cctggatgag
gaagggtttg aaagtggaga ctgcggtgat 1500gatgaagatg agtgcattgg
aggctctggt gatggaatga taaaagtgaa gaatcagctc 1560cgcttccttg
cagaactggc ctatgatctg gatgtggatg atgcgcctgg aaacagtcag
1620caggcaactc cgaaggacaa cgagataagc acctttcaca acctcgggaa
cgttcattcc 1680ccgctgaagc ttctcaccag catggccatc tcggtggtgt
gcttcttctt cctggtgcac 1740tga 17434580PRTHomo sapiens 4Met Ala Gly
Thr Val Arg Thr Ala Cys Leu Val Val Ala Met Leu Leu1 5 10 15Ser Leu
Asp Phe Pro Gly Gln Ala Gln Pro Pro Pro Pro Pro Pro Asp 20 25 30Ala
Thr Cys His Gln Val Arg Ser Phe Phe Gln Arg Leu Gln Pro Gly 35 40
45Leu Lys Trp Val Pro Glu Thr Pro Val Pro Gly Ser Asp Leu Gln Val
50 55 60Cys Leu Pro Lys Gly Pro Thr Cys Cys Ser Arg Lys Met Glu Glu
Lys65 70 75 80Tyr Gln Leu Thr Ala Arg Leu Asn Met Glu Gln Leu Leu
Gln Ser Ala 85 90 95Ser Met Glu Leu Lys Phe Leu Ile Ile Gln Asn Ala
Ala Val Phe Gln 100 105 110Glu Ala Phe Glu Ile Val Val Arg His Ala
Lys Asn Tyr Thr Asn Ala 115 120 125Met Phe Lys Asn Asn Tyr Pro Ser
Leu Thr Pro Gln Ala Phe Glu Phe 130 135 140Val Gly Glu Phe Phe Thr
Asp Val Ser Leu Tyr Ile Leu Gly Ser Asp145 150 155 160Ile Asn Val
Asp Asp Met Val Asn Glu Leu Phe Asp Ser Leu Phe Pro 165 170 175Val
Ile Tyr Thr Gln Leu Met Asn Pro Gly Leu Pro Asp Ser Ala Leu 180 185
190Asp Ile Asn Glu Cys Leu Arg Gly Ala Arg Arg Asp Leu Lys Val Phe
195 200 205Gly Asn Phe Pro Lys Leu Ile Met Thr Gln Val Ser Lys Ser
Leu Gln 210 215 220Val Thr Arg Ile Phe Leu Gln Ala Leu Asn Leu Gly
Ile Glu Val Ile225 230 235 240Asn Thr Thr Asp His Leu Lys Phe Ser
Lys Asp Cys Gly Arg Met Leu 245 250 255Thr Arg Met Trp Tyr Cys Ser
Tyr Cys Gln Gly Leu Met Met Val Lys 260 265 270Pro Cys Gly Gly Tyr
Cys Asn Val Val Met Gln Gly Cys Met Ala Gly 275 280 285Val Val Glu
Ile Asp Lys Tyr Trp Arg Glu Tyr Ile Leu Ser Leu Glu 290 295 300Glu
Leu Val Asn Gly Met Tyr Arg Ile Tyr Asp Met Glu Asn Val Leu305 310
315 320Leu Gly Leu Phe Ser Thr Ile His Asp Ser Ile Gln Tyr Val Gln
Lys 325 330 335Asn Ala Gly Lys Leu Thr Thr Thr Ile Gly Lys Leu Cys
Ala His Ser 340 345 350Gln Gln Arg Gln Tyr Arg Ser Ala Tyr Tyr Pro
Glu Asp Leu Phe Ile 355 360 365Asp Lys Lys Val Leu Lys Val Ala His
Val Glu His Glu Glu Thr Leu 370 375 380Ser Ser Arg Arg Arg Glu Leu
Ile Gln Lys Leu Lys Ser Phe Ile Ser385 390 395 400Phe Tyr Ser Ala
Leu Pro Gly Tyr Ile Cys Ser His Ser Pro Val Ala 405 410 415Glu Asn
Asp Thr Leu Cys Trp Asn Gly Gln Glu Leu Val Glu Arg Tyr 420 425
430Ser Gln Lys Ala Ala Arg Asn Gly Met Lys Asn Gln Phe Asn Leu His
435 440 445Glu Leu Lys Met Lys Gly Pro Glu Pro Val Val Ser Gln Ile
Ile Asp 450 455 460Lys Leu Lys His Ile Asn Gln Leu Leu Arg Thr Met
Ser Met Pro Lys465 470 475 480Gly Arg Val Leu Asp Lys Asn Leu Asp
Glu Glu Gly Phe Glu Ser Gly 485 490 495Asp Cys Gly Asp Asp Glu Asp
Glu Cys Ile Gly Gly Ser Gly Asp Gly 500 505 510Met Ile Lys Val Lys
Asn Gln Leu Arg Phe Leu Ala Glu Leu Ala Tyr 515 520 525Asp Leu Asp
Val Asp Asp Ala Pro Gly Asn Ser Gln Gln Ala Thr Pro 530 535 540Lys
Asp Asn Glu Ile Ser Thr Phe His Asn Leu Gly Asn Val His Ser545 550
555 560Pro Leu Lys Leu Leu Thr Ser Met Ala Ile Ser Val Val Cys Phe
Phe 565 570 575Phe Leu Val His 580531DNAArtificial SequencePCR
primer 5atagaattcc accatggccg ggaccgtgcg c 31631DNAArtificial
SequencePCR primer 6ataggatccc ttcagcgggg aatgaacgtt c
31721DNAArtificial SequencePCR primer 7gggccagtgg atagacagat g
21824DNAArtificial SequencePCR primer 8caggggccag tggatagacc gatg
24924DNAArtificial SequencePCR primer 9caggggccag tggatagact gatg
241023DNAArtificial SequencePCR primer 10gctcactgga tggtgggaag atg
23111392DNAMus musculus 11atgaacttcg ggctcacctt gattttcctt
gtccttactt taaaaggtgt ccagtgtgag 60gtgcaactgg tggagtctgg gggaggctta
gtgaagcctg gaggatccct gaaactctcc 120tgtgcagcct ctggattcac
tttcagtcgc tatgccatgt cttgggttcg ccagattcca 180gagaagatac
tggagtgggt cgcagccatt gatagtagtg gtggtgacac ctactattta
240gacactgtga aggaccgatt caccatctcc agagacaatg ccaataatac
cctgcacctg 300caaatgcgca gtctgaggtc tgaggacaca gccttgtatt
actgtgtaag acaggggggg 360gcttactggg gccaagggac tctggtcact
gtctctgcag ctagcaccaa gggcccatcg 420gtcttccccc tggcaccctc
ctccaagagc acctctgggg gcacagcggc cctgggctgc 480ctggtcaagg
actacttccc cgaaccggtg acggtgtcgt ggaactcagg cgccctgacc
540agcggcgtgc acaccttccc ggctgtccta cagtcctcag gactctactc
cctcagcagc 600gtggtgaccg tgccctccag cagcttgggc acccagacct
acatctgcaa cgtgaatcac 660aagcccagca acaccaaggt ggacaagaaa
gttgagccca aatcttgtga caaaactcac 720acatgcccac cgtgcccagc
acctgaactc ctggggggac cgtcagtctt cctcttcccc 780ccaaaaccca
aggacaccct catgatctcc cggacccctg aggtcacatg cgtggtggtg
840gacgtgagcc acgaagaccc tgaggtcaag ttcaactggt acgtggacgg
cgtggaggtg 900cataatgcca agacaaagcc gcgggaggag cagtacaaca
gcacgtaccg tgtggtcagc 960gtcctcaccg tcctgcacca ggactggctg
aatggcaagg agtacaagtg caaggtctcc 1020aacaaagccc tcccagcccc
catcgagaaa accatctcca aagccaaagg gcagccccga 1080gaaccacagg
tgtacaccct gcccccatcc cgggatgagc tgaccaagaa ccaggtcagc
1140ctgacctgcc tggtcaaagg cttctatccc agcgacatcg ccgtggagtg
ggagagcaat 1200gggcagccgg agaacaacta caagaccacg cctcccgtgc
tggactccga cggctccttc 1260ttcctctaca gcaagctcac cgtggacaag
agcaggtggc agcaggggaa cgtcttctca 1320tgctccgtga tgcatgaggc
tctgcacaac cactacacgc agaagagcct ctccctgtct 1380ccgggtaaat ga
139212342DNAMus musculus 12gaggtgcacc tggtggagtc tgggggaggc
ttagtgaagc ctggagggtc cctgaaactc 60tcctgtgcag cctctggatt cactttcagt
aactatgcca tgtcttgggt tcgccagact 120ccagagaaga ggctggagtg
ggtcgcagcc attaataata atggtgatga cacctactat 180ttagacactg
tgaaggaccg attcaccatc tccagagaca atgccaagaa caccctgtac
240ctgcaaatga gcagtctgag gtctgaggac acagccctgt attactgtgt
aagacaaggg 300ggggcttact ggggccaagg gactctggtc actgtctctg ca
342131413DNAMus musculus 13atgggatgga actggatctt tattttaatc
ctgtcagtaa ctacaggtgt ccactctgag 60gtccagctgc agcagtctgg acctgagctg
gtgaagcctg gggcttcagt gaagatatcc 120tgcaaggctt ctggttactc
attcactggc tactacatgc actgggtgaa gcaaagtcct 180gaaaagagcc
ttgagtggat tggagagatt aatcctagca ctggtggtac tacctacaac
240cagaagttca aggccaaggc cacattgact gtagacaaat cctccagcac
agcctacatg 300cagctcaaga gcctgacatc tgaggactct gcagtctatt
actgtgcaag gaggggcgga 360ttaactggga cgagcttctt tgcttactgg
ggccaaggga ctctggtcac tgtctctgca 420gctagcacca agggcccatc
ggtcttcccc ctggcaccct cctccaagag cacctctggg 480ggcacagcgg
ccctgggctg cctggtcaag gactacttcc ccgaaccggt gacggtgtcg
540tggaactcag gcgccctgac cagcggcgtg cacaccttcc cggctgtcct
acagtcctca 600ggactctact ccctcagcag cgtggtgacc gtgccctcca
gcagcttggg cacccagacc 660tacatctgca acgtgaatca caagcccagc
aacaccaagg tggacaagaa agttgagccc 720aaatcttgtg acaaaactca
cacatgccca ccgtgcccag cacctgaact cctgggggga 780ccgtcagtct
tcctcttccc cccaaaaccc aaggacaccc tcatgatctc ccggacccct
840gaggtcacat gcgtggtggt ggacgtgagc cacgaagacc ctgaggtcaa
gttcaactgg 900tacgtggacg gcgtggaggt gcataatgcc aagacaaagc
cgcgggagga gcagtacaac 960agcacgtacc gtgtggtcag cgtcctcacc
gtcctgcacc aggactggct gaatggcaag 1020gagtacaagt gcaaggtctc
caacaaagcc ctcccagccc ccatcgagaa aaccatctcc 1080aaagccaaag
ggcagccccg agaaccacag gtgtacaccc tgcccccatc ccgggatgag
1140ctgaccaaga accaggtcag cctgacctgc ctggtcaaag gcttctatcc
cagcgacatc 1200gccgtggagt gggagagcaa tgggcagccg gagaacaact
acaagaccac gcctcccgtg 1260ctggactccg acggctcctt cttcctctac
agcaagctca ccgtggacaa gagcaggtgg 1320cagcagggga acgtcttctc
atgctccgtg atgcatgagg ctctgcacaa ccactacacg 1380cagaagagcc
tctccctgtc tccgggtaaa tga 141314354DNAMus musculus 14caggtcactc
tgaaagagtc tggccctggg atattgcagc cctcccagac cctcagtctg 60acttgttctt
tctctgggtt ttcactgagc acttatggta tgggtgtagg ttggattcgt
120cagccttcag ggatgggtct ggagtggctg gccaacattt ggtggtatga
tgctaagtac 180tataactctg acctgaagag ccggctcaca atctccaagg
atacctccaa caaccaggtg 240ttcctcaaga tctccagtgt ggacacttca
gatactgcca catactactg tgctcaaatg 300ggactggcct ggtttgctta
ctggggccaa gggactctgg tcactgtctc tgca 35415354DNAMus musculus
15caggtcactc tgaaagagtc tggccctggg atattgcagc cctcccagac cctcagtctg
60acttgttctt tctctgggtt ttcactgagc atttatggta tgggtgtagg ttggattcgt
120cagccttcag ggaagggtct ggagtggctg gccaacattt ggtggaatga
tgataagtac 180tataactcag ccctgaagag ccggctcaca atctccaagg
atacctccaa caaccaggta 240ttcctcaaga tctccagtgt ggacactgca
gatactgcca catactactg tgctcaaata 300ggttacttct actttgacta
ctggggccaa ggcaccactc tcacagtctc ctca 354161416DNAMus musculus
16atgaacttcg ggctcacctt gattttcctc gtccttactt taaaaggtgt ccagtgtgag
60gtgcagctgg tggagtctgg gggagactta gtgaagcctg gagggaccct gaaactctcc
120tgtgcagcct ctggatccac tttcagtaac tatgccatgt cttgggttcg
ccagactcca 180gagaagaggc tggagtgggt cgcagccatt gatagtaatg
gaggtaccac ctactatcca 240gacactatga aggaccgatt caccatttcc
agagacaatg ccaagaacac cctgtacctg 300caaatgaaca gtctgaggtc
tgaagacaca gccttttatc actgtacaag acataatgga 360gggtatgaaa
actacggctg gtttgcttac tggggccaag ggactctggt cactgtctct
420gcagctagca ccaagggccc atcggtcttc cccctggcac cctcctccaa
gagcacctct 480gggggcacag cggccctggg ctgcctggtc aaggactact
tccccgaacc ggtgacggtg 540tcgtggaact caggcgccct gaccagcggc
gtgcacacct tcccggctgt cctacagtcc 600tcaggactct actccctcag
cagcgtggtg accgtgccct ccagcagctt gggcacccag 660acctacatct
gcaacgtgaa tcacaagccc agcaacacca aggtggacaa gaaagttgag
720cccaaatctt gtgacaaaac tcacacatgc ccaccgtgcc cagcacctga
actcctgggg 780ggaccgtcag tcttcctctt ccccccaaaa cccaaggaca
ccctcatgat ctcccggacc 840cctgaggtca catgcgtggt ggtggacgtg
agccacgaag accctgaggt caagttcaac 900tggtacgtgg acggcgtgga
ggtgcataat gccaagacaa agccgcggga ggagcagtac 960aacagcacgt
accgtgtggt cagcgtcctc accgtcctgc accaggactg gctgaatggc
1020aaggagtaca agtgcaaggt ctccaacaaa gccctcccag cccccatcga
gaaaaccatc 1080tccaaagcca aagggcagcc ccgagaacca caggtgtaca
ccctgccccc atcccgggat 1140gagctgacca agaaccaggt cagcctgacc
tgcctggtca aaggcttcta tcccagcgac 1200atcgccgtgg agtgggagag
caatgggcag ccggagaaca actacaagac cacgcctccc 1260gtgctggact
ccgacggctc cttcttcctc tacagcaagc tcaccgtgga caagagcagg
1320tggcagcagg ggaacgtctt ctcatgctcc gtgatgcatg aggctctgca
caaccactac 1380acgcagaaga gcctctccct gtctccgggt aaatga
141617366DNAMus musculus 17gaggtgcagc tggtggagtc tgggggagac
ttagtgaagc ctggagggtc cctgaaactc 60tcctgtgcag cctctggatt cactttcagt
agctatgcca tgtcttgggt tcgccagact 120ccagagaaga ggctggagtg
ggtcgcagcc attaatagta atggaggtac cacctactat 180ccagacacta
tgaaggaccg attcaccatc tccagagaca atgccaagaa caccctgtac
240ctgcaaatga gcagtctgag gtctgaagac tcagccttgt attactgtac
aagacataat 300ggagggtatg aaaactacgg ctggtttgct tactggggcc
aagggactct ggtcactgtc 360tctgca 366181413DNAMus musculus
18atggaatcta actggatact tccttttatt ctgtcggtag cttcaggggt ctactcagag
60gttcagctcc agcagtctgg gactgtgctg gcaaggcctg gggcttcagt gaagatgtcc
120tgcaaggctt ctggctacac ctttactggc tactggatgc gctgggtaaa
acagaggcct 180ggacagggtc tggaatggat tggcgctatt tatcctggaa
atagtgatac aacatacaac 240cagaagttca agggcaaggc caaactgact
gcagtcacat ctgtcagcac tgcctacatg 300gaactcagca gcctgacaaa
tgaggactct gcggtctatt actgttcaag atcgggggac 360ctaactgggg
ggtttgctta ctggggccaa gggactctgg tcactgtctc tacagccaaa
420gctagcacca agggcccatc ggtcttcccc ctggcaccct cctccaagag
cacctctggg 480ggcacagcgg ccctgggctg cctggtcaag gactacttcc
ccgaaccggt gacggtgtcg 540tggaactcag gcgccctgac cagcggcgtg
cacaccttcc cggctgtcct acagtcctca 600ggactctact ccctcagcag
cgtggtgacc gtgccctcca gcagcttggg cacccagacc 660tacatctgca
acgtgaatca caagcccagc aacaccaagg tggacaagaa agttgagccc
720aaatcttgtg acaaaactca cacatgccca ccgtgcccag cacctgaact
cctgggggga 780ccgtcagtct tcctcttccc cccaaaaccc aaggacaccc
tcatgatctc ccggacccct 840gaggtcacat gcgtggtggt ggacgtgagc
cacgaagacc ctgaggtcaa gttcaactgg 900tacgtggacg gcgtggaggt
gcataatgcc aagacaaagc cgcgggagga gcagtacaac 960agcacgtacc
gtgtggtcag cgtcctcacc gtcctgcacc aggactggct gaatggcaag
1020gagtacaagt gcaaggtctc caacaaagcc ctcccagccc ccatcgagaa
aaccatctcc 1080aaagccaaag ggcagccccg agaaccacag gtgtacaccc
tgcccccatc ccgggatgag 1140ctgaccaaga accaggtcag cctgacctgc
ctggtcaaag gcttctatcc cagcgacatc 1200gccgtggagt gggagagcaa
tgggcagccg gagaacaact acaagaccac gcctcccgtg 1260ctggactccg
acggctcctt cttcctctac agcaagctca ccgtggacaa gagcaggtgg
1320cagcagggga acgtcttctc atgctccgtg atgcatgagg ctctgcacaa
ccactacacg 1380cagaagagcc tctccctgtc tccgggtaaa tga 141319357DNAMus
musculus 19gaggttcagc tccagcagtc tgggactgtg ctggcaaggc ctggggcttc
agtgaagatg 60tcctgcaagg cttctggcta cacctttacc ggctactgga tgcactgggt
aaaacagagg 120cctggacagg gtctggaatg gattggcgct atttatcctg
gaaatagtga tactaactac 180aaccagaagt tcaagggcaa ggccaaactg
actgcagtca catctgccag cactgcctac 240atggagctca gcagcctgac
aaatgaggac gctgcggtct atcactgtac aagatcgggg 300gacctaactg
gggggcttgc ttactggggc caagggactc tggtcactgt ctctgca 35720372DNAMus
musculus 20caggtccagc tgcagcagcc tggggctgaa ctggtgaagc ctggggcttc
agtgaaactg 60tcctgcaagg cttctggata caccttcact agctactgga tgcattgggt
gaagcagagg 120cctggacaag gccttgagtg gatcggagag attgatcctt
ctgatagtta tacttactac 180aatcaaaagt tcaggggcaa ggccacattg
actgtagaca aatcctccaa cacagcctac 240atgcaactca gcagcctgac
atctgaggac tctgcggtct attactgttc aagatcaaat 300ctgggtgatg
gtcactaccg gtttcctgcg tttccttact ggggccaagg gactctggtc
360actgtctctg ca 37221372DNAMus musculus 21caggtccaac tgcagcagcc
tggggctgaa ctggtgaaac ctggggcttc agtgaagctg 60tcctgcaagg cttctggcta
caccttcacc agctactgga tgcactgggt gaaacagagg 120cctggacaag
gccttgaatg gattggtaca attgaccctt ctgatagtga aactcactac
180aatctacagt tcaaggacac ggccacattg actgtagaca aatcctccag
cacagcctac 240atgcagctca gcagcctgac atctgaggac tctgcggtct
attattgtat aagaggcgcc 300ttctatagtt cctatagtta ctgggcctgg
tttgcttact ggggccaagg gactctggtc 360actgtctctg ca 37222463PRTMus
musculus 22Met Asn Phe Gly Leu Thr Leu Ile Phe Leu Val Leu Thr Leu
Lys Gly1 5 10 15Val Gln Cys Glu Val Gln Leu Val Glu Ser Gly Gly Gly
Leu Val Lys 20 25 30Pro Gly Gly Ser Leu Lys Leu Ser Cys Ala Ala Ser
Gly Phe Thr Phe 35
40 45Ser Arg Tyr Ala Met Ser Trp Val Arg Gln Ile Pro Glu Lys Ile
Leu 50 55 60Glu Trp Val Ala Ala Ile Asp Ser Ser Gly Gly Asp Thr Tyr
Tyr Leu65 70 75 80Asp Thr Val Lys Asp Arg Phe Thr Ile Ser Arg Asp
Asn Ala Asn Asn 85 90 95Thr Leu His Leu Gln Met Arg Ser Leu Arg Ser
Glu Asp Thr Ala Leu 100 105 110Tyr Tyr Cys Val Arg Gln Gly Gly Ala
Tyr Trp Gly Gln Gly Thr Leu 115 120 125Val Thr Val Ser Ala Ala Ser
Thr Lys Gly Pro Ser Val Phe Pro Leu 130 135 140Ala Pro Ser Ser Lys
Ser Thr Ser Gly Gly Thr Ala Ala Leu Gly Cys145 150 155 160Leu Val
Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser Trp Asn Ser 165 170
175Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val Leu Gln Ser
180 185 190Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro Ser
Ser Ser 195 200 205Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His
Lys Pro Ser Asn 210 215 220Thr Lys Val Asp Lys Lys Val Glu Pro Lys
Ser Cys Asp Lys Thr His225 230 235 240Thr Cys Pro Pro Cys Pro Ala
Pro Glu Leu Leu Gly Gly Pro Ser Val 245 250 255Phe Leu Phe Pro Pro
Lys Pro Lys Asp Thr Leu Met Ile Ser Arg Thr 260 265 270Pro Glu Val
Thr Cys Val Val Val Asp Val Ser His Glu Asp Pro Glu 275 280 285Val
Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His Asn Ala Lys 290 295
300Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg Val Val
Ser305 310 315 320Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly
Lys Glu Tyr Lys 325 330 335Cys Lys Val Ser Asn Lys Ala Leu Pro Ala
Pro Ile Glu Lys Thr Ile 340 345 350Ser Lys Ala Lys Gly Gln Pro Arg
Glu Pro Gln Val Tyr Thr Leu Pro 355 360 365Pro Ser Arg Asp Glu Leu
Thr Lys Asn Gln Val Ser Leu Thr Cys Leu 370 375 380Val Lys Gly Phe
Tyr Pro Ser Asp Ile Ala Val Glu Trp Glu Ser Asn385 390 395 400Gly
Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val Leu Asp Ser 405 410
415Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp Lys Ser Arg
420 425 430Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His Glu
Ala Leu 435 440 445His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser
Pro Gly Lys 450 455 46023114PRTMus musculus 23Glu Val His Leu Val
Glu Ser Gly Gly Gly Leu Val Lys Pro Gly Gly1 5 10 15Ser Leu Lys Leu
Ser Cys Ala Ala Ser Gly Phe Thr Phe Ser Asn Tyr 20 25 30Ala Met Ser
Trp Val Arg Gln Thr Pro Glu Lys Arg Leu Glu Trp Val 35 40 45Ala Ala
Ile Asn Asn Asn Gly Asp Asp Thr Tyr Tyr Leu Asp Thr Val 50 55 60Lys
Asp Arg Phe Thr Ile Ser Arg Asp Asn Ala Lys Asn Thr Leu Tyr65 70 75
80Leu Gln Met Ser Ser Leu Arg Ser Glu Asp Thr Ala Leu Tyr Tyr Cys
85 90 95Val Arg Gln Gly Gly Ala Tyr Trp Gly Gln Gly Thr Leu Val Thr
Val 100 105 110Ser Ala 24470PRTMus musculus 24Met Gly Trp Asn Trp
Ile Phe Ile Leu Ile Leu Ser Val Thr Thr Gly1 5 10 15Val His Ser Glu
Val Gln Leu Gln Gln Ser Gly Pro Glu Leu Val Lys 20 25 30Pro Gly Ala
Ser Val Lys Ile Ser Cys Lys Ala Ser Gly Tyr Ser Phe 35 40 45Thr Gly
Tyr Tyr Met His Trp Val Lys Gln Ser Pro Glu Lys Ser Leu 50 55 60Glu
Trp Ile Gly Glu Ile Asn Pro Ser Thr Gly Gly Thr Thr Tyr Asn65 70 75
80Gln Lys Phe Lys Ala Lys Ala Thr Leu Thr Val Asp Lys Ser Ser Ser
85 90 95Thr Ala Tyr Met Gln Leu Lys Ser Leu Thr Ser Glu Asp Ser Ala
Val 100 105 110Tyr Tyr Cys Ala Arg Arg Gly Gly Leu Thr Gly Thr Ser
Phe Phe Ala 115 120 125Tyr Trp Gly Gln Gly Thr Leu Val Thr Val Ser
Ala Ala Ser Thr Lys 130 135 140Gly Pro Ser Val Phe Pro Leu Ala Pro
Ser Ser Lys Ser Thr Ser Gly145 150 155 160Gly Thr Ala Ala Leu Gly
Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro 165 170 175Val Thr Val Ser
Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr 180 185 190Phe Pro
Ala Val Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val 195 200
205Val Thr Val Pro Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn
210 215 220Val Asn His Lys Pro Ser Asn Thr Lys Val Asp Lys Lys Val
Glu Pro225 230 235 240Lys Ser Cys Asp Lys Thr His Thr Cys Pro Pro
Cys Pro Ala Pro Glu 245 250 255Leu Leu Gly Gly Pro Ser Val Phe Leu
Phe Pro Pro Lys Pro Lys Asp 260 265 270Thr Leu Met Ile Ser Arg Thr
Pro Glu Val Thr Cys Val Val Val Asp 275 280 285Val Ser His Glu Asp
Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly 290 295 300Val Glu Val
His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn305 310 315
320Ser Thr Tyr Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp
325 330 335Leu Asn Gly Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala
Leu Pro 340 345 350Ala Pro Ile Glu Lys Thr Ile Ser Lys Ala Lys Gly
Gln Pro Arg Glu 355 360 365Pro Gln Val Tyr Thr Leu Pro Pro Ser Arg
Asp Glu Leu Thr Lys Asn 370 375 380Gln Val Ser Leu Thr Cys Leu Val
Lys Gly Phe Tyr Pro Ser Asp Ile385 390 395 400Ala Val Glu Trp Glu
Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr 405 410 415Thr Pro Pro
Val Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys 420 425 430Leu
Thr Val Asp Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys 435 440
445Ser Val Met His Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu
450 455 460Ser Leu Ser Pro Gly Lys465 47025118PRTMus musculus 25Gln
Val Thr Leu Lys Glu Ser Gly Pro Gly Ile Leu Gln Pro Ser Gln1 5 10
15Thr Leu Ser Leu Thr Cys Ser Phe Ser Gly Phe Ser Leu Ser Thr Tyr
20 25 30Gly Met Gly Val Gly Trp Ile Arg Gln Pro Ser Gly Met Gly Leu
Glu 35 40 45Trp Leu Ala Asn Ile Trp Trp Tyr Asp Ala Lys Tyr Tyr Asn
Ser Asp 50 55 60Leu Lys Ser Arg Leu Thr Ile Ser Lys Asp Thr Ser Asn
Asn Gln Val65 70 75 80Phe Leu Lys Ile Ser Ser Val Asp Thr Ser Asp
Thr Ala Thr Tyr Tyr 85 90 95Cys Ala Gln Met Gly Leu Ala Trp Phe Ala
Tyr Trp Gly Gln Gly Thr 100 105 110Leu Val Thr Val Ser Ala
11526118PRTMus musculus 26Gln Val Thr Leu Lys Glu Ser Gly Pro Gly
Ile Leu Gln Pro Ser Gln1 5 10 15Thr Leu Ser Leu Thr Cys Ser Phe Ser
Gly Phe Ser Leu Ser Ile Tyr 20 25 30Gly Met Gly Val Gly Trp Ile Arg
Gln Pro Ser Gly Lys Gly Leu Glu 35 40 45Trp Leu Ala Asn Ile Trp Trp
Asn Asp Asp Lys Tyr Tyr Asn Ser Ala 50 55 60Leu Lys Ser Arg Leu Thr
Ile Ser Lys Asp Thr Ser Asn Asn Gln Val65 70 75 80Phe Leu Lys Ile
Ser Ser Val Asp Thr Ala Asp Thr Ala Thr Tyr Tyr 85 90 95Cys Ala Gln
Ile Gly Tyr Phe Tyr Phe Asp Tyr Trp Gly Gln Gly Thr 100 105 110Thr
Leu Thr Val Ser Ser 11527471PRTMus musculus 27Met Asn Phe Gly Leu
Thr Leu Ile Phe Leu Val Leu Thr Leu Lys Gly1 5 10 15Val Gln Cys Glu
Val Gln Leu Val Glu Ser Gly Gly Asp Leu Val Lys 20 25 30Pro Gly Gly
Thr Leu Lys Leu Ser Cys Ala Ala Ser Gly Ser Thr Phe 35 40 45Ser Asn
Tyr Ala Met Ser Trp Val Arg Gln Thr Pro Glu Lys Arg Leu 50 55 60Glu
Trp Val Ala Ala Ile Asp Ser Asn Gly Gly Thr Thr Tyr Tyr Pro65 70 75
80Asp Thr Met Lys Asp Arg Phe Thr Ile Ser Arg Asp Asn Ala Lys Asn
85 90 95Thr Leu Tyr Leu Gln Met Asn Ser Leu Arg Ser Glu Asp Thr Ala
Phe 100 105 110Tyr His Cys Thr Arg His Asn Gly Gly Tyr Glu Asn Tyr
Gly Trp Phe 115 120 125Ala Tyr Trp Gly Gln Gly Thr Leu Val Thr Val
Ser Ala Ala Ser Thr 130 135 140Lys Gly Pro Ser Val Phe Pro Leu Ala
Pro Ser Ser Lys Ser Thr Ser145 150 155 160Gly Gly Thr Ala Ala Leu
Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu 165 170 175Pro Val Thr Val
Ser Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His 180 185 190Thr Phe
Pro Ala Val Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser 195 200
205Val Val Thr Val Pro Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys
210 215 220Asn Val Asn His Lys Pro Ser Asn Thr Lys Val Asp Lys Lys
Val Glu225 230 235 240Pro Lys Ser Cys Asp Lys Thr His Thr Cys Pro
Pro Cys Pro Ala Pro 245 250 255Glu Leu Leu Gly Gly Pro Ser Val Phe
Leu Phe Pro Pro Lys Pro Lys 260 265 270Asp Thr Leu Met Ile Ser Arg
Thr Pro Glu Val Thr Cys Val Val Val 275 280 285Asp Val Ser His Glu
Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp 290 295 300Gly Val Glu
Val His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr305 310 315
320Asn Ser Thr Tyr Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp
325 330 335Trp Leu Asn Gly Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys
Ala Leu 340 345 350Pro Ala Pro Ile Glu Lys Thr Ile Ser Lys Ala Lys
Gly Gln Pro Arg 355 360 365Glu Pro Gln Val Tyr Thr Leu Pro Pro Ser
Arg Asp Glu Leu Thr Lys 370 375 380Asn Gln Val Ser Leu Thr Cys Leu
Val Lys Gly Phe Tyr Pro Ser Asp385 390 395 400Ile Ala Val Glu Trp
Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys 405 410 415Thr Thr Pro
Pro Val Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser 420 425 430Lys
Leu Thr Val Asp Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser 435 440
445Cys Ser Val Met His Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser
450 455 460Leu Ser Leu Ser Pro Gly Lys465 47028122PRTMus musculus
28Glu Val Gln Leu Val Glu Ser Gly Gly Asp Leu Val Lys Pro Gly Gly1
5 10 15Ser Leu Lys Leu Ser Cys Ala Ala Ser Gly Phe Thr Phe Ser Ser
Tyr 20 25 30Ala Met Ser Trp Val Arg Gln Thr Pro Glu Lys Arg Leu Glu
Trp Val 35 40 45Ala Ala Ile Asn Ser Asn Gly Gly Thr Thr Tyr Tyr Pro
Asp Thr Met 50 55 60Lys Asp Arg Phe Thr Ile Ser Arg Asp Asn Ala Lys
Asn Thr Leu Tyr65 70 75 80Leu Gln Met Ser Ser Leu Arg Ser Glu Asp
Ser Ala Leu Tyr Tyr Cys 85 90 95Thr Arg His Asn Gly Gly Tyr Glu Asn
Tyr Gly Trp Phe Ala Tyr Trp 100 105 110Gly Gln Gly Thr Leu Val Thr
Val Ser Ala 115 12029470PRTMus musculus 29Met Glu Ser Asn Trp Ile
Leu Pro Phe Ile Leu Ser Val Ala Ser Gly1 5 10 15Val Tyr Ser Glu Val
Gln Leu Gln Gln Ser Gly Thr Val Leu Ala Arg 20 25 30Pro Gly Ala Ser
Val Lys Met Ser Cys Lys Ala Ser Gly Tyr Thr Phe 35 40 45Thr Gly Tyr
Trp Met Arg Trp Val Lys Gln Arg Pro Gly Gln Gly Leu 50 55 60Glu Trp
Ile Gly Ala Ile Tyr Pro Gly Asn Ser Asp Thr Thr Tyr Asn65 70 75
80Gln Lys Phe Lys Gly Lys Ala Lys Leu Thr Ala Val Thr Ser Val Ser
85 90 95Thr Ala Tyr Met Glu Leu Ser Ser Leu Thr Asn Glu Asp Ser Ala
Val 100 105 110Tyr Tyr Cys Ser Arg Ser Gly Asp Leu Thr Gly Gly Phe
Ala Tyr Trp 115 120 125Gly Gln Gly Thr Leu Val Thr Val Ser Thr Ala
Lys Ala Ser Thr Lys 130 135 140Gly Pro Ser Val Phe Pro Leu Ala Pro
Ser Ser Lys Ser Thr Ser Gly145 150 155 160Gly Thr Ala Ala Leu Gly
Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro 165 170 175Val Thr Val Ser
Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr 180 185 190Phe Pro
Ala Val Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val 195 200
205Val Thr Val Pro Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn
210 215 220Val Asn His Lys Pro Ser Asn Thr Lys Val Asp Lys Lys Val
Glu Pro225 230 235 240Lys Ser Cys Asp Lys Thr His Thr Cys Pro Pro
Cys Pro Ala Pro Glu 245 250 255Leu Leu Gly Gly Pro Ser Val Phe Leu
Phe Pro Pro Lys Pro Lys Asp 260 265 270Thr Leu Met Ile Ser Arg Thr
Pro Glu Val Thr Cys Val Val Val Asp 275 280 285Val Ser His Glu Asp
Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly 290 295 300Val Glu Val
His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn305 310 315
320Ser Thr Tyr Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp
325 330 335Leu Asn Gly Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala
Leu Pro 340 345 350Ala Pro Ile Glu Lys Thr Ile Ser Lys Ala Lys Gly
Gln Pro Arg Glu 355 360 365Pro Gln Val Tyr Thr Leu Pro Pro Ser Arg
Asp Glu Leu Thr Lys Asn 370 375 380Gln Val Ser Leu Thr Cys Leu Val
Lys Gly Phe Tyr Pro Ser Asp Ile385 390 395 400Ala Val Glu Trp Glu
Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr 405 410 415Thr Pro Pro
Val Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys 420 425 430Leu
Thr Val Asp Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys 435 440
445Ser Val Met His Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu
450 455 460Ser Leu Ser Pro Gly Lys465 47030119PRTMus musculus 30Glu
Val Gln Leu Gln Gln Ser Gly Thr Val Leu Ala Arg Pro Gly Ala1 5 10
15Ser Val Lys Met Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Gly Tyr
20 25 30Trp Met His Trp Val Lys Gln Arg Pro Gly Gln Gly Leu Glu Trp
Ile 35 40 45Gly Ala Ile Tyr Pro Gly Asn Ser Asp Thr Asn Tyr Asn Gln
Lys Phe 50 55 60Lys Gly Lys Ala Lys Leu Thr Ala Val Thr Ser Ala Ser
Thr Ala Tyr65 70 75 80Met Glu Leu Ser Ser Leu Thr Asn Glu Asp Ala
Ala Val Tyr His Cys 85 90 95Thr Arg Ser Gly Asp Leu Thr Gly Gly Leu
Ala Tyr Trp Gly Gln Gly 100 105 110Thr Leu Val Thr Val Ser Ala
11531124PRTMus musculus 31Gln Val Gln Leu Gln Gln Pro Gly Ala Glu
Leu Val Lys Pro Gly Ala1 5 10 15Ser Val Lys Leu Ser Cys Lys Ala Ser
Gly Tyr Thr Phe Thr Ser Tyr 20 25 30Trp Met His Trp Val Lys Gln Arg
Pro Gly Gln Gly Leu Glu Trp
Ile 35 40 45Gly Glu Ile Asp Pro Ser Asp Ser Tyr Thr Tyr Tyr Asn Gln
Lys Phe 50 55 60Arg Gly Lys Ala Thr Leu Thr Val Asp Lys Ser Ser Asn
Thr Ala Tyr65 70 75 80Met Gln Leu Ser Ser Leu Thr Ser Glu Asp Ser
Ala Val Tyr Tyr Cys 85 90 95Ser Arg Ser Asn Leu Gly Asp Gly His Tyr
Arg Phe Pro Ala Phe Pro 100 105 110Tyr Trp Gly Gln Gly Thr Leu Val
Thr Val Ser Ala 115 12032124PRTMus musculus 32Gln Val Gln Leu Gln
Gln Pro Gly Ala Glu Leu Val Lys Pro Gly Ala1 5 10 15Ser Val Lys Leu
Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Ser Tyr 20 25 30Trp Met His
Trp Val Lys Gln Arg Pro Gly Gln Gly Leu Glu Trp Ile 35 40 45Gly Thr
Ile Asp Pro Ser Asp Ser Glu Thr His Tyr Asn Leu Gln Phe 50 55 60Lys
Asp Thr Ala Thr Leu Thr Val Asp Lys Ser Ser Ser Thr Ala Tyr65 70 75
80Met Gln Leu Ser Ser Leu Thr Ser Glu Asp Ser Ala Val Tyr Tyr Cys
85 90 95Ile Arg Gly Ala Phe Tyr Ser Ser Tyr Ser Tyr Trp Ala Trp Phe
Ala 100 105 110Tyr Trp Gly Gln Gly Thr Leu Val Thr Val Ser Ala 115
12033717DNAMus musculus 33atgagtcctg cccagttcct gtttctgtta
gtgctctgga ttcgggaaac caacggtgat 60gttgtgatga cccagactcc actcactttg
tcggttacca ttggacaacc agcctccatc 120tcttgcaagt caagtcagag
cctcttagat agtgatggaa agacatattt gaattggttg 180ttacagaggc
caggccagtc tccaaagcgc ctaatctatc tggtgtctaa attggactct
240ggagcccctg acaggttcac tggcagtgga tcagggacag atttcacact
gaaaatcagt 300agagtggagg ctgaggattt gggaatttat tattgctggc
aaggtacaca ttttccgctc 360acgttcggtg ctgggaccaa gctggagctg
aaacgtacgg tggctgcacc atctgtcttc 420atcttcccgc catctgatga
gcagttgaaa tctggaactg cctctgttgt gtgcctgctg 480aataacttct
atcccagaga ggccaaagta cagtggaagg tggataacgc cctccaatcg
540ggtaactccc aggagagtgt cacagagcag gacagcaagg acagcaccta
cagcctcagc 600agcaccctga cgctgagcaa agcagactac gagaaacaca
aagtctacgc ctgcgaagtc 660acccatcagg gcctgagctc gcccgtcaca
aagagcttca acaggggaga gtgttga 71734336DNAMus musculus 34gatgttgtga
tgacccagtc tccactcact ttgtcgatta ccattggaca accagcctcc 60atctcttgca
agtcaagtca gagcctctta gatagtgatg gaaagacata tttgaattgg
120ttgttacaga ggccaggcca gtctccaaag cgcctaatct atctggtgtc
taaactggac 180tctggagtcc ctgacaggtt cactggcagt ggatcaggga
cagatttctc actgaaaatc 240agcagagtgg aggctgagga tttgggaatt
tattattgct ggcaaggtac acattttccg 300ctcacgttcg gtgctgggac
caagctggag ctgaaa 33635717DNAMus musculus 35atgagtcctg tccagttcct
gtttctgtta atgctctgga ttcaggaaac caacggtgat 60gttgtgatga cccagactcc
actgtctttg tcggttacca ttggacaacc agcctctatc 120tcttgcaagt
caagtcagag cctcttatat agtaatggaa agacatattt gaattggtta
180caacagaggc ctggccaggc tccaaagcac ctaatgtatc aggtgtccaa
actggaccct 240ggcatccctg acaggttcag tggcagtgga tcagaaacag
attttacact taaaatcagc 300agagtggagg ctgaagattt gggagtttat
tactgcttgc aaagtacata ttatccgctc 360acgttcggtg ctgggaccaa
gctggagctg aaacgtacgg tggctgcacc atctgtcttc 420atcttcccgc
catctgatga gcagttgaaa tctggaactg cctctgttgt gtgcctgctg
480aataacttct atcccagaga ggccaaagta cagtggaagg tggataacgc
cctccaatcg 540ggtaactccc aggagagtgt cacagagcag gacagcaagg
acagcaccta cagcctcagc 600agcaccctga cgctgagcaa agcagactac
gagaaacaca aagtctacgc ctgcgaagtc 660acccatcagg gcctgagctc
gcccgtcaca aagagcttca acaggggaga gtgttga 71736324DNAMus musculus
36gacatcaaga tgacccagtc tccatcttcc atgtatgcat ctctaggaga gagagtcact
60atcacttgca aggcgagtca ggacattaat aactatttaa gctggttcca gcagaaacca
120gggaaatctc ctaagaccct gatctatcgt gcaaacagat tggtagatgg
ggtcccatca 180aggttcagtg gcagtggatc tgggcaagat tattctctca
ccatcagcag cctggagtat 240gaagatatgg gaattaatta ttgtctacag
tgtgatgagt ttcctccgtg gacgttcggt 300ggaggcacca agctggaaat caaa
32437336DNAMus musculus 37gatgttgtga tgacccaaac tccactctcc
ctgcctgtca gtcttggaga tcaagcctcc 60atctcttgca gatctagtca gagccttgta
cacagtaatg gaaacaccta tttacattgg 120tacctgcaga agccaggcca
gtctccaaag ctcctgatct acaaagtttc caaccgattt 180tctggggtcc
cagacaggtt cagtggcagt ggatcaggga cagatttcac actcaagatc
240agcagagtgg aggctgagga tctgggagtt tatttctgct ctcaaagtac
acatgttccg 300tggacgttcg gtggaggcac caagctggaa atcaaa
33638705DNAMus musculus 38atgagaccct ccattcagtt cctggggctc
ttgttgttct ggcttcatgg tgttcagtgt 60gacatccaga tgacacagtc tccatcctca
ctgtctgcat ctctgggagg caaagtcacc 120atcacttgca aggcaagtca
ggacattaac aagaatatag tttggtacca acacaagcct 180ggaaaaggtc
ctaggctgct catatggtac acatctacat tacagccagg catcccatca
240aggttcagtg gaagtgggtc tgggagagat tattccttca gcatcagcaa
cctggagcct 300gaagatattg caacttatta ctgtctacag tatgataatc
ttccacggac gttcggtgga 360ggcaccaaac tggaaatcaa acgtacggtg
gctgcaccat ctgtcttcat cttcccgcca 420tctgatgagc agttgaaatc
tggaactgcc tctgttgtgt gcctgctgaa taacttctat 480cccagagagg
ccaaagtaca gtggaaggtg gataacgccc tccaatcggg taactcccag
540gagagtgtca cagagcagga cagcaaggac agcacctaca gcctcagcag
caccctgacg 600ctgagcaaag cagactacga gaaacacaaa gtctacgcct
gcgaagtcac ccatcagggc 660ctgagctcgc ccgtcacaaa gagcttcaac
aggggagagt gttga 70539321DNAMus musculus 39gacatccaga tgacacagtc
tccatcctca ctgtctgcat ctctgggagg caaagtcacc 60atcacttgca aggcaagtca
ggacattaac aagaatataa tttggtacca acacaagcct 120ggaaaaggtc
ctaggctgct catatggtac acatctacat tacagccagg catcccatca
180aggttcagtg gaagtgggtc tgggagagat tattccttca gcatcagcaa
cctggagcct 240gaagatattg caacttatta ctgtctacag tatgataatc
ttccacggac gttcggtgga 300ggcaccaagc tggaaatcaa a 32140720DNAMus
musculus 40atgaggttct ctgctcagct tctggggctg cttgtgctct ggatccctgg
atccactgca 60gatattgtga tgacgcaggc tgcattctcc aatccagtca ctcttggaac
atcaacttcc 120atctcctgca ggtctagtaa gagtctccta catagtaatg
gcatcactta tttgtattgg 180tatctgcaga agccaggcca gtctcctcag
ctcctgattt atcagatgtc caaccttgcc 240tcaggagtcc cagacaggtt
cagtagcagt gggtcaggaa ctgatttcac actgagaatc 300agcagagtgg
aggctgagga tgtgggtgtt tattactgtg ctcaaaatct agaacttccg
360tatacgttcg gatcggggac caagctggaa ataaaacgta cggtggctgc
accatctgtc 420ttcatcttcc cgccatctga tgagcagttg aaatctggaa
ctgcctctgt tgtgtgcctg 480ctgaataact tctatcccag agaggccaaa
gtacagtgga aggtggataa cgccctccaa 540tcgggtaact cccaggagag
tgtcacagag caggacagca aggacagcac ctacagcctc 600agcagcaccc
tgacgctgag caaagcagac tacgagaaac acaaagtcta cgcctgcgaa
660gtcacccatc agggcctgag ctcgcccgtc acaaagagct tcaacagggg
agagtgttga 72041336DNAMus musculus 41gatattgtga tgacgcaggc
tgcattctcc aatccagtca ctcttggaac atcagcttcc 60atctcctgca ggtctagtaa
gagtctccta catagtaatg gcatcactta tttgtattgg 120tttctgcaga
agccaggcca gtctcctcag ctcctgattt atcagatgtc caaccttgcc
180tcaggagtcc cagacaggtt cagtagcagt gggtcaggaa ctgatttcac
actgagaatc 240agcagagtgg aggctgagga tgtgggtgtt tattactgtg
ctcaaaatct agaacttccg 300tatacgttcg gatcggggac caagctggaa ataaaa
33642321DNAMus musculus 42gatattgtgc taactcagtc tccagccacc
ctgtctgtga ctccaggaga cagagtcagt 60ctttcctgca gggccagcca tagtattagc
aacttcctac actggtatcc acaaaaatca 120catgagtctc caaggcttct
catcaagtat gcttcccagt ccatctctgg gatcccctcc 180aggttcagtg
gcaatggatc agggacagat ttcactctca gtatcaacag tgtggagact
240gaagattttg gaatgtattt ctgtcaacag agtaacatct ggtcgctcac
gttcggtgct 300gggaccaagc tggagctgaa a 32143333DNAMus musculus
43gacattgtgc tcacccaatc tccaacttct ttggctgtgt ctctagggca gagtgtcacc
60atctcctgca gagccagtga aagtgttgaa tattatggca ctagtttaat gcagtggtac
120caacagaaac caggacagcc acccaaactc ctcatctatg gtgcatccaa
cgtagaatct 180ggggtccctg ccaggtttag tggcagtggg tctgggacag
acttcagcct caacatccat 240cctgtggagg aggatgatat tgcaatgtat
ttctgtcagc aaagtaggaa ggttccgtat 300acgttcggat cggggaccaa
gctggaaata aaa 33344238PRTMus musculus 44Met Ser Pro Ala Gln Phe
Leu Phe Leu Leu Val Leu Trp Ile Arg Glu1 5 10 15Thr Asn Gly Asp Val
Val Met Thr Gln Thr Pro Leu Thr Leu Ser Val 20 25 30Thr Ile Gly Gln
Pro Ala Ser Ile Ser Cys Lys Ser Ser Gln Ser Leu 35 40 45Leu Asp Ser
Asp Gly Lys Thr Tyr Leu Asn Trp Leu Leu Gln Arg Pro 50 55 60Gly Gln
Ser Pro Lys Arg Leu Ile Tyr Leu Val Ser Lys Leu Asp Ser65 70 75
80Gly Ala Pro Asp Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp Phe Thr
85 90 95Leu Lys Ile Ser Arg Val Glu Ala Glu Asp Leu Gly Ile Tyr Tyr
Cys 100 105 110Trp Gln Gly Thr His Phe Pro Leu Thr Phe Gly Ala Gly
Thr Lys Leu 115 120 125Glu Leu Lys Arg Thr Val Ala Ala Pro Ser Val
Phe Ile Phe Pro Pro 130 135 140Ser Asp Glu Gln Leu Lys Ser Gly Thr
Ala Ser Val Val Cys Leu Leu145 150 155 160Asn Asn Phe Tyr Pro Arg
Glu Ala Lys Val Gln Trp Lys Val Asp Asn 165 170 175Ala Leu Gln Ser
Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser 180 185 190Lys Asp
Ser Thr Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala 195 200
205Asp Tyr Glu Lys His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly
210 215 220Leu Ser Ser Pro Val Thr Lys Ser Phe Asn Arg Gly Glu
Cys225 230 23545112PRTMus musculus 45Asp Val Val Met Thr Gln Ser
Pro Leu Thr Leu Ser Ile Thr Ile Gly1 5 10 15Gln Pro Ala Ser Ile Ser
Cys Lys Ser Ser Gln Ser Leu Leu Asp Ser 20 25 30Asp Gly Lys Thr Tyr
Leu Asn Trp Leu Leu Gln Arg Pro Gly Gln Ser 35 40 45Pro Lys Arg Leu
Ile Tyr Leu Val Ser Lys Leu Asp Ser Gly Val Pro 50 55 60Asp Arg Phe
Thr Gly Ser Gly Ser Gly Thr Asp Phe Ser Leu Lys Ile65 70 75 80Ser
Arg Val Glu Ala Glu Asp Leu Gly Ile Tyr Tyr Cys Trp Gln Gly 85 90
95Thr His Phe Pro Leu Thr Phe Gly Ala Gly Thr Lys Leu Glu Leu Lys
100 105 11046238PRTMus musculus 46Met Ser Pro Val Gln Phe Leu Phe
Leu Leu Met Leu Trp Ile Gln Glu1 5 10 15Thr Asn Gly Asp Val Val Met
Thr Gln Thr Pro Leu Ser Leu Ser Val 20 25 30Thr Ile Gly Gln Pro Ala
Ser Ile Ser Cys Lys Ser Ser Gln Ser Leu 35 40 45Leu Tyr Ser Asn Gly
Lys Thr Tyr Leu Asn Trp Leu Gln Gln Arg Pro 50 55 60Gly Gln Ala Pro
Lys His Leu Met Tyr Gln Val Ser Lys Leu Asp Pro65 70 75 80Gly Ile
Pro Asp Arg Phe Ser Gly Ser Gly Ser Glu Thr Asp Phe Thr 85 90 95Leu
Lys Ile Ser Arg Val Glu Ala Glu Asp Leu Gly Val Tyr Tyr Cys 100 105
110Leu Gln Ser Thr Tyr Tyr Pro Leu Thr Phe Gly Ala Gly Thr Lys Leu
115 120 125Glu Leu Lys Arg Thr Val Ala Ala Pro Ser Val Phe Ile Phe
Pro Pro 130 135 140Ser Asp Glu Gln Leu Lys Ser Gly Thr Ala Ser Val
Val Cys Leu Leu145 150 155 160Asn Asn Phe Tyr Pro Arg Glu Ala Lys
Val Gln Trp Lys Val Asp Asn 165 170 175Ala Leu Gln Ser Gly Asn Ser
Gln Glu Ser Val Thr Glu Gln Asp Ser 180 185 190Lys Asp Ser Thr Tyr
Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala 195 200 205Asp Tyr Glu
Lys His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly 210 215 220Leu
Ser Ser Pro Val Thr Lys Ser Phe Asn Arg Gly Glu Cys225 230
23547108PRTMus musculus 47Asp Ile Lys Met Thr Gln Ser Pro Ser Ser
Met Tyr Ala Ser Leu Gly1 5 10 15Glu Arg Val Thr Ile Thr Cys Lys Ala
Ser Gln Asp Ile Asn Asn Tyr 20 25 30Leu Ser Trp Phe Gln Gln Lys Pro
Gly Lys Ser Pro Lys Thr Leu Ile 35 40 45Tyr Arg Ala Asn Arg Leu Val
Asp Gly Val Pro Ser Arg Phe Ser Gly 50 55 60Ser Gly Ser Gly Gln Asp
Tyr Ser Leu Thr Ile Ser Ser Leu Glu Tyr65 70 75 80Glu Asp Met Gly
Ile Asn Tyr Cys Leu Gln Cys Asp Glu Phe Pro Pro 85 90 95Trp Thr Phe
Gly Gly Gly Thr Lys Leu Glu Ile Lys 100 10548112PRTMus musculus
48Asp Val Val Met Thr Gln Thr Pro Leu Ser Leu Pro Val Ser Leu Gly1
5 10 15Asp Gln Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Leu Val His
Ser 20 25 30Asn Gly Asn Thr Tyr Leu His Trp Tyr Leu Gln Lys Pro Gly
Gln Ser 35 40 45Pro Lys Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser
Gly Val Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe
Thr Leu Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu Asp Leu Gly Val
Tyr Phe Cys Ser Gln Ser 85 90 95Thr His Val Pro Trp Thr Phe Gly Gly
Gly Thr Lys Leu Glu Ile Lys 100 105 11049234PRTMus musculus 49Met
Arg Pro Ser Ile Gln Phe Leu Gly Leu Leu Leu Phe Trp Leu His1 5 10
15Gly Val Gln Cys Asp Ile Gln Met Thr Gln Ser Pro Ser Ser Leu Ser
20 25 30Ala Ser Leu Gly Gly Lys Val Thr Ile Thr Cys Lys Ala Ser Gln
Asp 35 40 45Ile Asn Lys Asn Ile Val Trp Tyr Gln His Lys Pro Gly Lys
Gly Pro 50 55 60Arg Leu Leu Ile Trp Tyr Thr Ser Thr Leu Gln Pro Gly
Ile Pro Ser65 70 75 80Arg Phe Ser Gly Ser Gly Ser Gly Arg Asp Tyr
Ser Phe Ser Ile Ser 85 90 95Asn Leu Glu Pro Glu Asp Ile Ala Thr Tyr
Tyr Cys Leu Gln Tyr Asp 100 105 110Asn Leu Pro Arg Thr Phe Gly Gly
Gly Thr Lys Leu Glu Ile Lys Arg 115 120 125Thr Val Ala Ala Pro Ser
Val Phe Ile Phe Pro Pro Ser Asp Glu Gln 130 135 140Leu Lys Ser Gly
Thr Ala Ser Val Val Cys Leu Leu Asn Asn Phe Tyr145 150 155 160Pro
Arg Glu Ala Lys Val Gln Trp Lys Val Asp Asn Ala Leu Gln Ser 165 170
175Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser Lys Asp Ser Thr
180 185 190Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala Asp Tyr
Glu Lys 195 200 205His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly
Leu Ser Ser Pro 210 215 220Val Thr Lys Ser Phe Asn Arg Gly Glu
Cys225 23050107PRTMus musculus 50Asp Ile Gln Met Thr Gln Ser Pro
Ser Ser Leu Ser Ala Ser Leu Gly1 5 10 15Gly Lys Val Thr Ile Thr Cys
Lys Ala Ser Gln Asp Ile Asn Lys Asn 20 25 30Ile Ile Trp Tyr Gln His
Lys Pro Gly Lys Gly Pro Arg Leu Leu Ile 35 40 45Trp Tyr Thr Ser Thr
Leu Gln Pro Gly Ile Pro Ser Arg Phe Ser Gly 50 55 60Ser Gly Ser Gly
Arg Asp Tyr Ser Phe Ser Ile Ser Asn Leu Glu Pro65 70 75 80Glu Asp
Ile Ala Thr Tyr Tyr Cys Leu Gln Tyr Asp Asn Leu Pro Arg 85 90 95Thr
Phe Gly Gly Gly Thr Lys Leu Glu Ile Lys 100 10551239PRTMus musculus
51Met Arg Phe Ser Ala Gln Leu Leu Gly Leu Leu Val Leu Trp Ile Pro1
5 10 15Gly Ser Thr Ala Asp Ile Val Met Thr Gln Ala Ala Phe Ser Asn
Pro 20 25 30Val Thr Leu Gly Thr Ser Thr Ser Ile Ser Cys Arg Ser Ser
Lys Ser 35 40 45Leu Leu His Ser Asn Gly Ile Thr Tyr Leu Tyr Trp Tyr
Leu Gln Lys 50 55 60Pro Gly Gln Ser Pro Gln Leu Leu Ile Tyr Gln Met
Ser Asn Leu Ala65 70 75 80Ser Gly Val Pro Asp Arg Phe Ser Ser Ser
Gly Ser Gly Thr Asp Phe 85 90 95Thr Leu Arg Ile Ser Arg Val Glu Ala
Glu Asp Val Gly Val Tyr Tyr 100 105 110Cys Ala Gln Asn Leu Glu Leu
Pro Tyr Thr Phe Gly Ser Gly Thr Lys 115 120 125Leu Glu Ile Lys Arg
Thr Val Ala Ala Pro Ser Val Phe Ile Phe Pro 130 135 140Pro Ser Asp
Glu Gln Leu Lys Ser Gly Thr Ala Ser Val Val Cys Leu145 150 155
160Leu Asn Asn Phe Tyr Pro Arg Glu Ala Lys Val Gln Trp Lys Val Asp
165 170 175Asn Ala Leu Gln Ser Gly Asn Ser Gln Glu Ser Val
Thr Glu Gln Asp 180 185 190Ser Lys Asp Ser Thr Tyr Ser Leu Ser Ser
Thr Leu Thr Leu Ser Lys 195 200 205Ala Asp Tyr Glu Lys His Lys Val
Tyr Ala Cys Glu Val Thr His Gln 210 215 220Gly Leu Ser Ser Pro Val
Thr Lys Ser Phe Asn Arg Gly Glu Cys225 230 23552112PRTMus musculus
52Asp Ile Val Met Thr Gln Ala Ala Phe Ser Asn Pro Val Thr Leu Gly1
5 10 15Thr Ser Ala Ser Ile Ser Cys Arg Ser Ser Lys Ser Leu Leu His
Ser 20 25 30Asn Gly Ile Thr Tyr Leu Tyr Trp Phe Leu Gln Lys Pro Gly
Gln Ser 35 40 45Pro Gln Leu Leu Ile Tyr Gln Met Ser Asn Leu Ala Ser
Gly Val Pro 50 55 60Asp Arg Phe Ser Ser Ser Gly Ser Gly Thr Asp Phe
Thr Leu Arg Ile65 70 75 80Ser Arg Val Glu Ala Glu Asp Val Gly Val
Tyr Tyr Cys Ala Gln Asn 85 90 95Leu Glu Leu Pro Tyr Thr Phe Gly Ser
Gly Thr Lys Leu Glu Ile Lys 100 105 11053107PRTMus musculus 53Asp
Ile Val Leu Thr Gln Ser Pro Ala Thr Leu Ser Val Thr Pro Gly1 5 10
15Asp Arg Val Ser Leu Ser Cys Arg Ala Ser His Ser Ile Ser Asn Phe
20 25 30Leu His Trp Tyr Pro Gln Lys Ser His Glu Ser Pro Arg Leu Leu
Ile 35 40 45Lys Tyr Ala Ser Gln Ser Ile Ser Gly Ile Pro Ser Arg Phe
Ser Gly 50 55 60Asn Gly Ser Gly Thr Asp Phe Thr Leu Ser Ile Asn Ser
Val Glu Thr65 70 75 80Glu Asp Phe Gly Met Tyr Phe Cys Gln Gln Ser
Asn Ile Trp Ser Leu 85 90 95Thr Phe Gly Ala Gly Thr Lys Leu Glu Leu
Lys 100 10554111PRTMus musculus 54Asp Ile Val Leu Thr Gln Ser Pro
Thr Ser Leu Ala Val Ser Leu Gly1 5 10 15Gln Ser Val Thr Ile Ser Cys
Arg Ala Ser Glu Ser Val Glu Tyr Tyr 20 25 30Gly Thr Ser Leu Met Gln
Trp Tyr Gln Gln Lys Pro Gly Gln Pro Pro 35 40 45Lys Leu Leu Ile Tyr
Gly Ala Ser Asn Val Glu Ser Gly Val Pro Ala 50 55 60Arg Phe Ser Gly
Ser Gly Ser Gly Thr Asp Phe Ser Leu Asn Ile His65 70 75 80Pro Val
Glu Glu Asp Asp Ile Ala Met Tyr Phe Cys Gln Gln Ser Arg 85 90 95Lys
Val Pro Tyr Thr Phe Gly Ser Gly Thr Lys Leu Glu Ile Lys 100 105
11055333DNAMus musculus 55cagatccagt tggagcagtc tggacctgag
ctgaagaagc ctggagagac agtcaagatc 60tcctgcaagg cttctggtta tattttcaga
gactattcaa tgcactgggt gaagcaggct 120ccaggaaagg gtttaaagtg
gatgggctgg ataaacactg agacgggtga gccaacatat 180gcagatgact
tcaagggacg gtttgccttc tctttggaaa cctctgccag cactgcctat
240ttgcagatca acaacctcaa aaatgaggac acggctacat atttctgtac
tagcctttac 300tggggccaag ggactctggt cactgtctct gca 33356372DNAMus
musculus 56caggtcactc tgaaagagtc tggccctggg atattgcagc cctcccagac
cctcagtctg 60acttgttctt tctctgggtt ttcactgagc acttatggta tgggtgtagg
ttggattcgt 120cagccttcag ggaagggtct ggagtggctg gccaacattt
ggtggcatga tgataagtac 180tataactcag ccctgaagag ccggctcaca
atctccaagg atatctccaa caaccaggta 240ttcctcaaga tctccagtgt
ggacactgca gatactgcca catactactg tgctcaaata 300gcccctcgat
ataataagta cgaaggcttt tttgctttct ggggccaagg gactctggtc
360actgtctctg ca 37257345DNAMus musculus 57caggttcaac tgcagcagtc
tggggctgag ctggtgaggc ctggggcttc agtgaagctg 60tcctgcaagg cttcgggcta
cacatttact gactatgaaa tgcactgggt gaagcagaca 120cctgtgcatg
gcctaaaatg gattggagct cttgatccta aaactggtga tactgcctac
180agtcagaagt tcaagggcaa ggccacactg actgcagaca aatcctccag
cacagcctac 240atggagctcc gcagcctgac atctgaggac tctgccgtct
attactgtac aagattctac 300tcctatactt actggggcca agggactctg
gtcactgtct ctgca 34558357DNAMus musculus 58gaggtgcagc ttgttgagac
tggtggagga ctggtgcagc ctgaagggtc attgaaactc 60tcatgtgcag cttctggatt
cagcttcaat atcaatgcca tgaactgggt ccgccaggct 120ccaggaaagg
gtttggaatg ggttgctcgc ataagaagtg aaagtaataa ttatgcaaca
180tattatggcg attcagtgaa agacaggttc accatctcca gagatgattc
acaaaacatg 240ctctatctac aaatgaacaa cttgaaaact gaggacacag
ccatatatta ctgtgtgaga 300gaggtaacta catcgtttgc ttattggggc
caagggactc tggtcactgt ctctgca 35759369DNAMus musculus 59gaggtgcagc
ttgttgagac tggtggagga ttggtgcagc ctaaagggtc attgaaactc 60tcatgtgcag
cctctggatt caccttcaat gccagtgcca tgaactgggt ccgccaggct
120ccaggaaagg gtttggaatg ggttgctcgc ataagaagta aaagtaataa
ttatgcaata 180tattatgccg attcagtgaa agacaggttc accatctcca
gagatgattc acaaagcatg 240ctctatctgc aaatgaacaa cttgaaaact
gaggacacag ccatgtatta ctgtgtgaga 300gatccgggct actatggtaa
cccctggttt gcttactggg gccaagggac tctggtcact 360gtctctgca
36960111PRTMus musculus 60Gln Ile Gln Leu Glu Gln Ser Gly Pro Glu
Leu Lys Lys Pro Gly Glu1 5 10 15Thr Val Lys Ile Ser Cys Lys Ala Ser
Gly Tyr Ile Phe Arg Asp Tyr 20 25 30Ser Met His Trp Val Lys Gln Ala
Pro Gly Lys Gly Leu Lys Trp Met 35 40 45Gly Trp Ile Asn Thr Glu Thr
Gly Glu Pro Thr Tyr Ala Asp Asp Phe 50 55 60Lys Gly Arg Phe Ala Phe
Ser Leu Glu Thr Ser Ala Ser Thr Ala Tyr65 70 75 80Leu Gln Ile Asn
Asn Leu Lys Asn Glu Asp Thr Ala Thr Tyr Phe Cys 85 90 95Thr Ser Leu
Tyr Trp Gly Gln Gly Thr Leu Val Thr Val Ser Ala 100 105
11061124PRTMus musculus 61Gln Val Thr Leu Lys Glu Ser Gly Pro Gly
Ile Leu Gln Pro Ser Gln1 5 10 15Thr Leu Ser Leu Thr Cys Ser Phe Ser
Gly Phe Ser Leu Ser Thr Tyr 20 25 30Gly Met Gly Val Gly Trp Ile Arg
Gln Pro Ser Gly Lys Gly Leu Glu 35 40 45Trp Leu Ala Asn Ile Trp Trp
His Asp Asp Lys Tyr Tyr Asn Ser Ala 50 55 60Leu Lys Ser Arg Leu Thr
Ile Ser Lys Asp Ile Ser Asn Asn Gln Val65 70 75 80Phe Leu Lys Ile
Ser Ser Val Asp Thr Ala Asp Thr Ala Thr Tyr Tyr 85 90 95Cys Ala Gln
Ile Ala Pro Arg Tyr Asn Lys Tyr Glu Gly Phe Phe Ala 100 105 110Phe
Trp Gly Gln Gly Thr Leu Val Thr Val Ser Ala 115 12062115PRTMus
musculus 62Gln Val Gln Leu Gln Gln Ser Gly Ala Glu Leu Val Arg Pro
Gly Ala1 5 10 15Ser Val Lys Leu Ser Cys Lys Ala Ser Gly Tyr Thr Phe
Thr Asp Tyr 20 25 30Glu Met His Trp Val Lys Gln Thr Pro Val His Gly
Leu Lys Trp Ile 35 40 45Gly Ala Leu Asp Pro Lys Thr Gly Asp Thr Ala
Tyr Ser Gln Lys Phe 50 55 60Lys Gly Lys Ala Thr Leu Thr Ala Asp Lys
Ser Ser Ser Thr Ala Tyr65 70 75 80Met Glu Leu Arg Ser Leu Thr Ser
Glu Asp Ser Ala Val Tyr Tyr Cys 85 90 95Thr Arg Phe Tyr Ser Tyr Thr
Tyr Trp Gly Gln Gly Thr Leu Val Thr 100 105 110Val Ser Ala
11563119PRTMus musculus 63Glu Val Gln Leu Val Glu Thr Gly Gly Gly
Leu Val Gln Pro Glu Gly1 5 10 15Ser Leu Lys Leu Ser Cys Ala Ala Ser
Gly Phe Ser Phe Asn Ile Asn 20 25 30Ala Met Asn Trp Val Arg Gln Ala
Pro Gly Lys Gly Leu Glu Trp Val 35 40 45Ala Arg Ile Arg Ser Glu Ser
Asn Asn Tyr Ala Thr Tyr Tyr Gly Asp 50 55 60Ser Val Lys Asp Arg Phe
Thr Ile Ser Arg Asp Asp Ser Gln Asn Met65 70 75 80Leu Tyr Leu Gln
Met Asn Asn Leu Lys Thr Glu Asp Thr Ala Ile Tyr 85 90 95Tyr Cys Val
Arg Glu Val Thr Thr Ser Phe Ala Tyr Trp Gly Gln Gly 100 105 110Thr
Leu Val Thr Val Ser Ala 11564123PRTMus musculus 64Glu Val Gln Leu
Val Glu Thr Gly Gly Gly Leu Val Gln Pro Lys Gly1 5 10 15Ser Leu Lys
Leu Ser Cys Ala Ala Ser Gly Phe Thr Phe Asn Ala Ser 20 25 30Ala Met
Asn Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Trp Val 35 40 45Ala
Arg Ile Arg Ser Lys Ser Asn Asn Tyr Ala Ile Tyr Tyr Ala Asp 50 55
60Ser Val Lys Asp Arg Phe Thr Ile Ser Arg Asp Asp Ser Gln Ser Met65
70 75 80Leu Tyr Leu Gln Met Asn Asn Leu Lys Thr Glu Asp Thr Ala Met
Tyr 85 90 95Tyr Cys Val Arg Asp Pro Gly Tyr Tyr Gly Asn Pro Trp Phe
Ala Tyr 100 105 110Trp Gly Gln Gly Thr Leu Val Thr Val Ser Ala 115
12065336DNAMus musculus 65gatgttgtga tgacccagac tccactcact
ttgtcggtta cccttggaca accagcctcc 60atctcttgca agtcaagtca gagcctctta
catagtgatg gaaagacatt tttgaattgg 120ttattacaga ggccaggcca
gtctccaaag cgcctaatct atctggtgtc tagactggac 180tctggagtcc
ctgacaggtt cactggcagt ggatcaggga cagatttcac actgaaaatc
240agcagagtgg aggctgagga tttgggagtt tattattgct gccaaggtac
acattttcct 300cggacgttcg gtggaggcac caggctggaa atcaaa
33666336DNAMus musculus 66gatgttttga tgacccaaac tccactctcc
ctgcctgtca gtcttggaga tcaagcctcc 60atctcttgca gatctagtca gagcattgta
catagtaatg gaaacaccta tttagaatgg 120tacctgcaga aaccaggcca
gtctccaaag ctcctgatct acaaagtttc caaccgattt 180tctggggtcc
cagacaggtt cagtggcagt ggatcaggga cagatttcac actcaagatc
240agcagagtgg aggctgagga tctgggagtt tattactgct ttcaaggttc
acatgttccg 300tggacgttcg gtggaggcac caagctggaa atcaaa
33667336DNAMus musculus 67gatgttgtga tgacccaaac tccactctcc
ctgcctgtca gtcttggaga tcaagcctcc 60atctcttgca gatctagtca gagccttgta
cacagtaatg gaaacaccta tttacattgg 120tacctgcaga agccaggcca
gtctccaaag ctcctgatct acaaagtttc caaccgattt 180tctggggtcc
cagacaggtt cagtggcagt ggatcaggga cagatttcac actcaagatc
240agcagagtgg aggctgagga tctgggagtt tatttctgct ctcaaaatac
acatgttcct 300cctacgttcg gatcggggac caagctggaa ataaaa
33668336DNAMus musculus 68gatattgtga tgactcagtc tgcaccctct
gtacctgtca ctcctggaga gtcagtatcc 60atctcctgca agtctagtaa gagtctcctg
catagtaatg gcaacactta cttgaattgg 120ttcctgcaga ggccaggcca
gtctcctcaa ctcctgattt attggatgtc caaccttgcc 180tcaggagtcc
cagacaggtt cagtggcagt gggtcaggaa ctgctttcac actgagaatc
240agtagagtgg aggctgagga tgtgggtgtt tattactgta tgcaacatat
agaataccct 300ttcacgttcg gcacggggac aaaattggaa ataaaa
33669336DNAMus musculus 69gatattgtga tgacgcaggc tgcattctcc
aatccagtca ctcttggaac atcagcttcc 60atctcctgca ggtctagtaa gagtctccta
catagttatg acatcactta tttgtattgg 120tatctgcaga agccaggcca
gtctcctcag ctcctgattt atcagatgtc caaccttgcc 180tcaggagtcc
cagacaggtt cagtagcagt gggtcaggaa ctgatttcac actgagaatc
240agcagagtgg aggctgagga tgtgggtgtt tattactgtg ctcaaaatct
agaacttcct 300ccgacgttcg gtggaggcac caagctggaa atcaaa
33670318DNAMus musculus 70caaattgttc tcacccagtc tccagcaatc
atgtctgcat ttccagggga gaaggtcacc 60atgacctgca gtgccagctc aagtgttagt
tacatgtact ggtaccagca gaagtcagga 120tcctccccca gactcctgat
ttatgacaca tccaacctgg cttctggagt ccctgttcgc 180ttcagtggca
gtgggtctgg gacctcttac tctctcacaa tcagccgaat ggaggctgaa
240gatgctgcca cttattactg ccagcagtgg agtagttacc cgctcacgtt
cggtggtggg 300accgagctgg agctgaaa 31871112PRTMus musculus 71Asp Val
Val Met Thr Gln Thr Pro Leu Thr Leu Ser Val Thr Leu Gly1 5 10 15Gln
Pro Ala Ser Ile Ser Cys Lys Ser Ser Gln Ser Leu Leu His Ser 20 25
30Asp Gly Lys Thr Phe Leu Asn Trp Leu Leu Gln Arg Pro Gly Gln Ser
35 40 45Pro Lys Arg Leu Ile Tyr Leu Val Ser Arg Leu Asp Ser Gly Val
Pro 50 55 60Asp Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu
Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu Asp Leu Gly Val Tyr Tyr
Cys Cys Gln Gly 85 90 95Thr His Phe Pro Arg Thr Phe Gly Gly Gly Thr
Arg Leu Glu Ile Lys 100 105 11072112PRTMus musculus 72Asp Val Leu
Met Thr Gln Thr Pro Leu Ser Leu Pro Val Ser Leu Gly1 5 10 15Asp Gln
Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Ile Val His Ser 20 25 30Asn
Gly Asn Thr Tyr Leu Glu Trp Tyr Leu Gln Lys Pro Gly Gln Ser 35 40
45Pro Lys Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser Gly Val Pro
50 55 60Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Lys
Ile65 70 75 80Ser Arg Val Glu Ala Glu Asp Leu Gly Val Tyr Tyr Cys
Phe Gln Gly 85 90 95Ser His Val Pro Trp Thr Phe Gly Gly Gly Thr Lys
Leu Glu Ile Lys 100 105 11073112PRTMus musculus 73Asp Val Val Met
Thr Gln Thr Pro Leu Ser Leu Pro Val Ser Leu Gly1 5 10 15Asp Gln Ala
Ser Ile Ser Cys Arg Ser Ser Gln Ser Leu Val His Ser 20 25 30Asn Gly
Asn Thr Tyr Leu His Trp Tyr Leu Gln Lys Pro Gly Gln Ser 35 40 45Pro
Lys Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser Gly Val Pro 50 55
60Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Lys Ile65
70 75 80Ser Arg Val Glu Ala Glu Asp Leu Gly Val Tyr Phe Cys Ser Gln
Asn 85 90 95Thr His Val Pro Pro Thr Phe Gly Ser Gly Thr Lys Leu Glu
Ile Lys 100 105 11074112PRTMus musculus 74Asp Ile Val Met Thr Gln
Ser Ala Pro Ser Val Pro Val Thr Pro Gly1 5 10 15Glu Ser Val Ser Ile
Ser Cys Lys Ser Ser Lys Ser Leu Leu His Ser 20 25 30Asn Gly Asn Thr
Tyr Leu Asn Trp Phe Leu Gln Arg Pro Gly Gln Ser 35 40 45Pro Gln Leu
Leu Ile Tyr Trp Met Ser Asn Leu Ala Ser Gly Val Pro 50 55 60Asp Arg
Phe Ser Gly Ser Gly Ser Gly Thr Ala Phe Thr Leu Arg Ile65 70 75
80Ser Arg Val Glu Ala Glu Asp Val Gly Val Tyr Tyr Cys Met Gln His
85 90 95Ile Glu Tyr Pro Phe Thr Phe Gly Thr Gly Thr Lys Leu Glu Ile
Lys 100 105 11075112PRTMus musculus 75Asp Ile Val Met Thr Gln Ala
Ala Phe Ser Asn Pro Val Thr Leu Gly1 5 10 15Thr Ser Ala Ser Ile Ser
Cys Arg Ser Ser Lys Ser Leu Leu His Ser 20 25 30Tyr Asp Ile Thr Tyr
Leu Tyr Trp Tyr Leu Gln Lys Pro Gly Gln Ser 35 40 45Pro Gln Leu Leu
Ile Tyr Gln Met Ser Asn Leu Ala Ser Gly Val Pro 50 55 60Asp Arg Phe
Ser Ser Ser Gly Ser Gly Thr Asp Phe Thr Leu Arg Ile65 70 75 80Ser
Arg Val Glu Ala Glu Asp Val Gly Val Tyr Tyr Cys Ala Gln Asn 85 90
95Leu Glu Leu Pro Pro Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile Lys
100 105 11076106PRTMus musculus 76Gln Ile Val Leu Thr Gln Ser Pro
Ala Ile Met Ser Ala Phe Pro Gly1 5 10 15Glu Lys Val Thr Met Thr Cys
Ser Ala Ser Ser Ser Val Ser Tyr Met 20 25 30Tyr Trp Tyr Gln Gln Lys
Ser Gly Ser Ser Pro Arg Leu Leu Ile Tyr 35 40 45Asp Thr Ser Asn Leu
Ala Ser Gly Val Pro Val Arg Phe Ser Gly Ser 50 55 60Gly Ser Gly Thr
Ser Tyr Ser Leu Thr Ile Ser Arg Met Glu Ala Glu65 70 75 80Asp Ala
Ala Thr Tyr Tyr Cys Gln Gln Trp Ser Ser Tyr Pro Leu Thr 85 90 95Phe
Gly Gly Gly Thr Glu Leu Glu Leu Lys 100 10577345DNAArtificial
SequenceMouse-human chimeric antibody H chain 77caggtgcagc
tggtggagtc tggagctgag gtgaagaagc ctggggcctc agtgaaggtc 60tcctgcaagg
cttctggata caccttcacc gactatgaaa tgcactgggt gcgacaggcc
120cctggacaag ggcttgagtg gatgggagct cttgatccta aaactggtga
tactgcctac 180agtcagaagt tcaagggcag agtcacgatt accgcggacg
aatccacgag cacagcctac 240atggagctga gcagcctgag atctgaggac
acggccgtgt attactgtgc gagattctac 300tcctatactt actggggcca
gggaaccctg gtcaccgtct cctca 34578345DNAArtificial
SequenceMouse-human chimeric antibody H chain 78caggtgcagc
tggtggagtc tggagctgag gtgaagaagc ctggggcctc agtgaaggtc
60tcctgcaagg cttctggata caccttcacc gactatgaaa tgcactgggt gcgacaggcc
120cctggacaag ggcttgagtg gatgggagct cttgatccta aaactggtga
tactgcctac 180agtcagaagt tcaagggcag agtcacgctg accgcggacg
aatccacgag cacagcctac 240atggagctga gcagcctgag atctgaggac
acggccgtgt attactgtac aagattctac 300tcctatactt actggggcca
gggaaccctg gtcaccgtct cctca 34579345DNAArtificial
SequenceMouse-human chimeric antibody H chain 79caggtgcagc
tggtggagtc tggagctgag gtgaagaagc ctggggcctc agtgaaggtc 60tcctgcaagg
cttctggata caccttcacc gactatgaaa tgcactgggt gcgacaggcc
120cctggacaag ggcttgagtg gatgggagct cttgatccta aaactggtga
tactgcctac 180agtcagaagt tcaagggcag agtcacgctg accgcggaca
aatccacgag cacagcctac 240atggagctga gcagcctgag atctgaggac
acggccgtgt attactgtac aagattctac 300tcctatactt actggggcca
gggaaccctg gtcaccgtct cctca 34580345DNAArtificial
SequenceMouse-human chimeric antibody H chain 80caggtgcagc
tggtggagtc tggagctgag gtgaagaagc ctggggcctc agtgaaggtc 60tcctgcaagg
cttctggata caccttcacc gactatgaaa tgcactgggt gcgacaggcc
120cctggacaag ggcttgagtg gatgggagct cttgatccta aaactggtga
tactgcctac 180agtcagaagt tcaagggcag agtcacgctg accgcggaca
aatccacgag cacagcctac 240atggagctga gcagcctgac atctgaggac
acggccgtgt attactgtac aagattctac 300tcctatactt actggggcca
gggaaccctg gtcaccgtct cctca 34581345DNAArtificial
SequenceMouse-human chimeric antibody H chain 81caggtgcagc
tggtgcagtc tggagctgag gtgaagaagc ctggggcctc agtgaaggtc 60tcctgcaagg
cttctggata caccttcacc gactatgaaa tgcactgggt gcgacaggcc
120cctggacaag ggcttgagtg gatgggagct cttgatccta aaactggtga
tactgcctac 180agtcagaagt tcaagggcag agtcacgctg accgcggacg
aatccacgag cacagcctac 240atggagctga gcagcctgag atctgaggac
acggccgtgt attactgtac aagattctac 300tcctatactt actggggcca
gggaaccctg gtcaccgtct cctca 34582345DNAArtificial
SequenceMouse-human chimeric antibody H chain 82caggtgcagc
tggtgcagtc tggagctgag gtgaagaagc ctggggcctc agtgaaggtc 60tcctgcaagg
cttctggata caccttcacc gactatgaaa tgcactgggt gcgacaggcc
120cctggacaag ggcttgagtg gatgggagct cttgatccta aaactggtga
tactgcctac 180agtcagaagt tcaagggcag agtcacgctg accgcggaca
aatccacgag cacagcctac 240atggagctga gcagcctgag atctgaggac
acggccgtgt attactgtac aagattctac 300tcctatactt actggggcca
gggaaccctg gtcaccgtct cctca 34583345DNAArtificial
SequenceMouse-human chimeric antibody H chain 83caggtgcagc
tggtgcagtc tggagctgag gtgaagaagc ctggggcctc agtgaaggtc 60tcctgcaagg
cttctggata caccttcacc gactatgaaa tgcactgggt gcgacaggcc
120cctggacaag ggcttgagtg gatgggagct cttgatccta aaactggtga
tactgcctac 180agtcagaagt tcaagggcag agtcacgctg accgcggaca
aatccacgag cacagcctac 240atggagctga gcagcctgac atctgaggac
acggccgtgt attactgtac aagattctac 300tcctatactt actggggcca
gggaaccctg gtcaccgtct cctca 34584115PRTArtificial
SequenceMouse-human chimeric antibody H chain 84Gln Val Gln Leu Val
Glu Ser Gly Ala Glu Val Lys Lys Pro Gly Ala1 5 10 15Ser Val Lys Val
Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 20 25 30Glu Met His
Trp Val Arg Gln Ala Pro Gly Gln Gly Leu Glu Trp Met 35 40 45Gly Ala
Leu Asp Pro Lys Thr Gly Asp Thr Ala Tyr Ser Gln Lys Phe 50 55 60Lys
Gly Arg Val Thr Ile Thr Ala Asp Glu Ser Thr Ser Thr Ala Tyr65 70 75
80Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys
85 90 95Ala Arg Phe Tyr Ser Tyr Thr Tyr Trp Gly Gln Gly Thr Leu Val
Thr 100 105 110Val Ser Ser 11585115PRTArtificial
SequenceMouse-human chimeric antibody H chain 85Gln Val Gln Leu Val
Glu Ser Gly Ala Glu Val Lys Lys Pro Gly Ala1 5 10 15Ser Val Lys Val
Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 20 25 30Glu Met His
Trp Val Arg Gln Ala Pro Gly Gln Gly Leu Glu Trp Met 35 40 45Gly Ala
Leu Asp Pro Lys Thr Gly Asp Thr Ala Tyr Ser Gln Lys Phe 50 55 60Lys
Gly Arg Val Thr Leu Thr Ala Asp Glu Ser Thr Ser Thr Ala Tyr65 70 75
80Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys
85 90 95Thr Arg Phe Tyr Ser Tyr Thr Tyr Trp Gly Gln Gly Thr Leu Val
Thr 100 105 110Val Ser Ser 11586115PRTArtificial
SequenceMouse-human chimeric antibody H chain 86Gln Val Gln Leu Val
Glu Ser Gly Ala Glu Val Lys Lys Pro Gly Ala1 5 10 15Ser Val Lys Val
Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 20 25 30Glu Met His
Trp Val Arg Gln Ala Pro Gly Gln Gly Leu Glu Trp Met 35 40 45Gly Ala
Leu Asp Pro Lys Thr Gly Asp Thr Ala Tyr Ser Gln Lys Phe 50 55 60Lys
Gly Arg Val Thr Leu Thr Ala Asp Lys Ser Thr Ser Thr Ala Tyr65 70 75
80Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys
85 90 95Thr Arg Phe Tyr Ser Tyr Thr Tyr Trp Gly Gln Gly Thr Leu Val
Thr 100 105 110Val Ser Ser 11587115PRTArtificial
SequenceMouse-human chimeric antibody H chain 87Gln Val Gln Leu Val
Glu Ser Gly Ala Glu Val Lys Lys Pro Gly Ala1 5 10 15Ser Val Lys Val
Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 20 25 30Glu Met His
Trp Val Arg Gln Ala Pro Gly Gln Gly Leu Glu Trp Met 35 40 45Gly Ala
Leu Asp Pro Lys Thr Gly Asp Thr Ala Tyr Ser Gln Lys Phe 50 55 60Lys
Gly Arg Val Thr Leu Thr Ala Asp Lys Ser Thr Ser Thr Ala Tyr65 70 75
80Met Glu Leu Ser Ser Leu Thr Ser Glu Asp Thr Ala Val Tyr Tyr Cys
85 90 95Thr Arg Phe Tyr Ser Tyr Thr Tyr Trp Gly Gln Gly Thr Leu Val
Thr 100 105 110Val Ser Ser 11588115PRTArtificial
SequenceMouse-human chimeric antibody H chain 88Gln Val Gln Leu Val
Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ala1 5 10 15Ser Val Lys Val
Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 20 25 30Glu Met His
Trp Val Arg Gln Ala Pro Gly Gln Gly Leu Glu Trp Met 35 40 45Gly Ala
Leu Asp Pro Lys Thr Gly Asp Thr Ala Tyr Ser Gln Lys Phe 50 55 60Lys
Gly Arg Val Thr Leu Thr Ala Asp Glu Ser Thr Ser Thr Ala Tyr65 70 75
80Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys
85 90 95Thr Arg Phe Tyr Ser Tyr Thr Tyr Trp Gly Gln Gly Thr Leu Val
Thr 100 105 110Val Ser Ser 11589115PRTArtificial
SequenceMouse-human chimeric antibody H chain 89Gln Val Gln Leu Val
Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ala1 5 10 15Ser Val Lys Val
Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 20 25 30Glu Met His
Trp Val Arg Gln Ala Pro Gly Gln Gly Leu Glu Trp Met 35 40 45Gly Ala
Leu Asp Pro Lys Thr Gly Asp Thr Ala Tyr Ser Gln Lys Phe 50 55 60Lys
Gly Arg Val Thr Leu Thr Ala Asp Lys Ser Thr Ser Thr Ala Tyr65 70 75
80Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys
85 90 95Thr Arg Phe Tyr Ser Tyr Thr Tyr Trp Gly Gln Gly Thr Leu Val
Thr 100 105 110Val Ser Ser 11590115PRTArtificial
SequenceMouse-human chimeric antibody H chain 90Gln Val Gln Leu Val
Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ala1 5 10 15Ser Val Lys Val
Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 20 25 30Glu Met His
Trp Val Arg Gln Ala Pro Gly Gln Gly Leu Glu Trp Met 35 40 45Gly Ala
Leu Asp Pro Lys Thr Gly Asp Thr Ala Tyr Ser Gln Lys Phe 50 55 60Lys
Gly Arg Val Thr Leu Thr Ala Asp Lys Ser Thr Ser Thr Ala Tyr65 70 75
80Met Glu Leu Ser Ser Leu Thr Ser Glu Asp Thr Ala Val Tyr Tyr Cys
85 90 95Thr Arg Phe Tyr Ser Tyr Thr Tyr Trp Gly Gln Gly Thr Leu Val
Thr 100 105 110Val Ser Ser 11591336DNAArtificial
SequenceMouse-human chimeric antibody L chain 91gatgttgtga
tgactcagtc tccactctcc ctgcccgtca cccctggaga gccggcctcc 60atctcctgca
gatctagtca gagccttgta cacagtaatg gaaacaccta tttacattgg
120tacctgcaga agccagggca gtctccacag ctcctgatct ataaagtttc
caaccgattt 180tctggggtcc ctgacaggtt cagtggcagt ggatcaggca
cagattttac actgaaaatc 240agcagagtgg aggctgagga tgttggggtt
tattactgct ctcaaaatac acatgttcct 300cctacgtttg gccaggggac
caagctggag atcaaa 33692112PRTArtificial SequenceMouse-human
chimeric antibody L chain 92Asp Val Val Met Thr Gln Ser Pro Leu Ser
Leu Pro Val Thr Pro Gly1 5 10 15Glu Pro Ala Ser Ile Ser Cys Arg Ser
Ser Gln Ser Leu Val His Ser 20 25 30Asn Gly Asn Thr Tyr Leu His Trp
Tyr Leu Gln Lys Pro Gly Gln Ser 35 40 45Pro Gln Leu Leu Ile Tyr Lys
Val Ser Asn Arg Phe Ser Gly Val Pro 50 55 60Asp Arg Phe Ser Gly Ser
Gly Ser Gly Thr Asp Phe Thr Leu Lys Ile65 70 75 80Ser Arg Val Glu
Ala Glu Asp Val Gly Val Tyr Tyr Cys Ser Gln Asn 85 90 95Thr His Val
Pro Pro Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys 100 105
1109314PRTHomo sapiens 93Gly Asn Ser Gln Gln Ala Thr Pro Lys Asp
Asn Glu Ile Ser1 5 10948PRTHomo sapiens 94Gly Asn Ser Gln Gln Ala
Thr Pro1 5958PRTHomo sapiens 95Gln Gln Ala Thr Pro Lys Asp Asn1
5968PRTHomo sapiens 96Thr Pro Lys Asp Asn Glu Ile Ser1 59710PRTHomo
sapiens 97Ala Thr Pro Lys Asp Asn Glu Ile Ser Thr1 5 109810PRTHomo
sapiens 98Pro Lys Asp Asn Glu Ile Ser Thr Phe His1 5 109910PRTHomo
sapiens 99Asp Asn Glu Ile Ser Thr Phe His Asn Leu1 5 1010010PRTHomo
sapiens 100Glu Ile Ser Thr Phe His Asn Leu Gly Asn1 5
1010127PRTHomo sapiens 101Gly Asn Ser Gln Gln Ala Thr Pro Lys Asp
Asn Glu Ile Ser Thr Phe1 5 10 15His Asn Leu Gly Asn Val His Ser Pro
Leu Lys 20 2510214PRTHomo sapiens 102Ser Thr Phe His Asn Leu Gly
Asn Val His Ser Pro Leu Lys1 5 101035PRTMus musculus 103Asn Tyr Ala
Met Ser1 510417PRTMus musculus 104Ala Ile Asn Asn Asn Gly Asp Asp
Thr Tyr Tyr Leu Asp Thr Val Lys1 5 10 15Asp1055PRTMus musculus
105Gln Gly Gly Ala Tyr1 51067PRTMus musculus 106Thr Tyr Gly Met Gly
Val Gly1 510716PRTMus musculus 107Asn Ile Trp Trp Tyr Asp Ala Lys
Tyr Tyr Asn Ser Asp Leu Lys Ser1 5 10 151088PRTMus musculus 108Met
Gly Leu Ala Trp Phe Ala Tyr1 51097PRTMus musculus 109Ile Tyr Gly
Met Gly Val Gly1 511016PRTMus musculus 110Asn Ile Trp Trp Asn Asp
Asp Lys Tyr Tyr Asn Ser Ala Leu Lys Ser1 5 10 151118PRTMus musculus
111Ile Gly Tyr Phe Tyr Phe Asp Tyr1 51125PRTMus musculus 112Gly Tyr
Trp Met His1 511317PRTMus musculus 113Ala Ile Tyr Pro Gly Asn Ser
Asp Thr Asn Tyr Asn Gln Lys Phe Lys1 5 10 15Gly11410PRTMus musculus
114Ser Gly Asp Leu Thr Gly Gly Leu Ala Tyr1 5 101155PRTMus musculus
115Ser Tyr Ala Met Ser1 511617PRTMus musculus 116Ala Ile Asn Ser
Asn Gly Gly Thr Thr Tyr Tyr Pro Asp Thr Met Lys1 5 10
15Asp11713PRTMus musculus 117His Asn Gly Gly Tyr Glu Asn Tyr Gly
Trp Phe Ala Tyr1 5 101185PRTMus musculus 118Ser Tyr Trp Met His1
511917PRTMus musculus 119Glu Ile Asp Pro Ser Asp Ser Tyr Thr Tyr
Tyr Asn Gln Lys Phe Arg1 5 10 15Gly12015PRTMus musculus 120Ser Asn
Leu Gly Asp Gly His Tyr Arg Phe Pro Ala Phe Pro Tyr1 5 10
1512117PRTMus musculus 121Thr Ile Asp Pro Ser Asp Ser Glu Thr His
Tyr Asn Leu Gln Phe Lys1 5 10 15Asp12215PRTMus musculus 122Gly Ala
Phe Tyr Ser Ser Tyr Ser Tyr Trp Ala Trp Phe Ala Tyr1 5 10
151235PRTMus musculus 123Asp Tyr Glu Met His1 512417PRTMus musculus
124Ala Leu Asp Pro Lys Thr Gly Asp Thr Ala Tyr Ser Gln Lys Phe Lys1
5 10 15Gly1256PRTMus musculus 125Phe Tyr Ser Tyr Thr Tyr1
51265PRTMus musculus 126Ile Asn Ala Met Asn1 512719PRTMus musculus
127Arg Ile Arg Ser Glu Ser Asn Asn Tyr Ala Thr Tyr Tyr Gly Asp Ser1
5 10 15Val Lys Asp1288PRTMus musculus 128Glu Val Thr Thr Ser Phe
Ala Tyr1 51295PRTMus musculus 129Ala Ser Ala Met Asn1 513019PRTMus
musculus 130Arg Ile Arg Ser Lys Ser Asn Asn Tyr Ala Ile Tyr Tyr Ala
Asp Ser1 5 10 15Val Lys Asp13112PRTMus musculus 131Asp Pro Gly Tyr
Tyr Gly Asn Pro Trp Phe Ala Tyr1 5 101325PRTMus musculus 132Asp Tyr
Ser Met His1 513317PRTMus musculus 133Trp Ile Asn Thr Glu Thr Gly
Glu Pro Thr Tyr Ala Asp Asp Phe Lys1 5 10 15Gly1342PRTMus musculus
134Leu Tyr113516PRTMus musculus 135Asn Ile Trp Trp His Asp Asp Lys
Tyr Tyr Asn Ser Ala Leu Lys Ser1 5 10 1513614PRTMus musculus 136Ile
Ala Pro Arg Tyr Asn Lys Tyr Glu Gly Phe Phe Ala Phe1 5
1013716PRTMus musculus 137Lys Ser Ser Gln Ser Leu Leu Asp Ser Asp
Gly Lys Thr Tyr Leu Asn1 5 10 151387PRTMus musculus 138Leu Val Ser
Lys Leu Asp Ser1 51399PRTMus musculus 139Trp Gln Gly Thr His Phe
Pro Leu Thr1 514011PRTMus musculus 140Lys Ala Ser Gln Asp Ile Asn
Asn Tyr Leu Ser1 5 101417PRTMus musculus 141Arg Ala Asn Arg Leu Val
Asp1 514210PRTMus musculus 142Leu Gln Cys Asp Glu Phe Pro Pro Trp
Thr1 5 1014316PRTMus musculus 143Arg Ser Ser Gln Ser Leu Val His
Ser Asn Gly Asn Thr Tyr Leu His1 5 10 151447PRTMus musculus 144Lys
Val Ser Asn Arg Phe Ser1 51459PRTMus musculus 145Ser Gln Ser Thr
His Val Pro Trp Thr1 514616PRTMus musculus 146Arg Ser Ser Lys Ser
Leu Leu His Ser Asn Gly Ile Thr Tyr Leu Tyr1 5 10 151477PRTMus
musculus 147Gln Met Ser Asn Leu Ala Ser1 51489PRTMus musculus
148Ala Gln Asn Leu Glu Leu Pro Tyr Thr1 514911PRTMus musculus
149Lys Ala Ser Gln Asp Ile Asn Lys Asn Ile Ile1 5 101507PRTMus
musculus 150Tyr Thr Ser Thr Leu Gln Pro1 51516PRTMus musculus
151Leu Gln Tyr Asp Asn Leu1 515211PRTMus musculus 152Arg Ala Ser
His Ser Ile Ser Asn Phe Leu His1 5 101537PRTMus musculus 153Tyr Ala
Ser Gln Ser Ile Ser1 51549PRTMus musculus 154Gln Gln Ser Asn Ile
Trp Ser Leu Thr1 515515PRTMus musculus 155Arg Ala Ser Glu Ser Val
Glu Tyr Tyr Gly Thr Ser Leu Met Gln1 5 10 151567PRTMus musculus
156Gly Ala Ser Asn Val Glu Ser1 51579PRTMus musculus 157Gln Gln Ser
Arg Lys Val Pro Tyr Thr1 51589PRTMus musculus 158Ser Gln Asn Thr
His Val Pro Pro Thr1 515916PRTMus musculus 159Lys Ser Ser Lys Ser
Leu Leu His Ser Asn Gly Asn Thr Tyr Leu Asn1 5 10 151607PRTMus
musculus 160Trp Met Ser Asn Leu Ala Ser1 51619PRTMus musculus
161Met Gln His Ile Glu Tyr Pro Phe Thr1 516216PRTMus musculus
162Arg Ser Ser Lys Ser Leu Leu His Ser Tyr Asp Ile Thr Tyr Leu Tyr1
5 10 151639PRTMus musculus 163Ala Gln Asn Leu Glu Leu Pro Pro Thr1
516410PRTMus musculus 164Ser Ala Ser Ser Ser Val Ser Tyr Met Tyr1 5
101657PRTMus musculus 165Asp Thr Ser Asn Leu Ala Ser1 51669PRTMus
musculus 166Gln Gln Trp Ser Ser Tyr Pro Leu Thr1 516716PRTMus
musculus 167Lys Ser Ser Gln Ser Leu Leu His Ser Asp Gly Lys Thr Phe
Leu Asn1 5 10 151687PRTMus musculus 168Leu Val Ser Arg Leu Asp
Ser1 51696PRTMus musculus 169Cys Gln Gly Thr His Phe1 517016PRTMus
musculus 170Arg Ser Ser Gln Ser Ile Val His Ser Asn Gly Asn Thr Tyr
Leu Glu1 5 10 151719PRTMus musculus 171Phe Gln Gly Ser His Val Pro
Trp Thr1 517227DNAArtificial SequencePCR primer 172cttgtacaca
gtgacggaaa cacctat 2717327DNAArtificial SequencePCR primer
173ataggtgttt ccgtcactgt gtacaag 2717416PRTArtificial
Sequencemutant antibody L chain 174Arg Ser Ser Gln Ser Leu Val His
Ser Asn Ala Asn Thr Tyr Leu His1 5 10 1517516PRTArtificial
Sequencemutant antibody L chain 175Arg Ser Ser Gln Ser Leu Val His
Ser Asn Asp Asn Thr Tyr Leu His1 5 10 1517616PRTArtificial
Sequencemutant antibody L chain 176Arg Ser Ser Gln Ser Leu Val His
Ser Asn Glu Asn Thr Tyr Leu His1 5 10 1517716PRTArtificial
Sequencemutant antibody L chain 177Arg Ser Ser Gln Ser Leu Val His
Ser Asn Phe Asn Thr Tyr Leu His1 5 10 1517816PRTArtificial
Sequencemutant antibody L chain 178Arg Ser Ser Gln Ser Leu Val His
Ser Asn His Asn Thr Tyr Leu His1 5 10 1517916PRTArtificial
Sequencemutant antibody L chain 179Arg Ser Ser Gln Ser Leu Val His
Ser Asn Asn Asn Thr Tyr Leu His1 5 10 1518016PRTArtificial
Sequencemutant antibody L chain 180Arg Ser Ser Gln Ser Leu Val His
Ser Asn Thr Asn Thr Tyr Leu His1 5 10 1518116PRTArtificial
Sequencemutant antibody L chain 181Arg Ser Ser Gln Ser Leu Val His
Ser Asn Gln Asn Thr Tyr Leu His1 5 10 1518217PRTArtificial
Sequencemutant antibody L chain 182Arg Ser Ser Gln Ser Leu Val His
Ser Asn Gly Ile Asn Thr Tyr Leu1 5 10 15His18316PRTArtificial
Sequencemutant antibody L chain 183Arg Ser Ser Gln Ser Leu Val His
Ser Asn Lys Asn Thr Tyr Leu His1 5 10 1518416PRTArtificial
Sequencemutant antibody L chain 184Arg Ser Ser Gln Ser Leu Val His
Ser Asn Leu Asn Thr Tyr Leu His1 5 10 1518516PRTArtificial
Sequencemutant antibody L chain 185Arg Ser Ser Gln Ser Leu Val His
Ser Asn Ser Asn Thr Tyr Leu His1 5 10 1518616PRTArtificial
Sequencemutant antibody L chain 186Arg Ser Ser Gln Ser Leu Val His
Ser Asn Trp Asn Thr Tyr Leu His1 5 10 1518716PRTArtificial
Sequencemutant antibody L chain 187Arg Ser Ser Gln Ser Leu Val His
Ser Asn Tyr Asn Thr Tyr Leu His1 5 10 1518816PRTArtificial
Sequencemutant antibody L chain 188Arg Ser Ser Gln Ser Leu Val His
Ser Asn Arg Asn Thr Tyr Leu His1 5 10 1518916PRTArtificial
Sequencemutant antibody L chain 189Arg Ser Ser Gln Ser Leu Val His
Ser Asn Val Asn Thr Tyr Leu His1 5 10 1519016PRTArtificial
Sequencemutant antibody L chain 190Arg Ser Ser Gln Ser Leu Val His
Ser Asn Pro Asn Thr Tyr Leu His1 5 10 15191112PRTArtificial
Sequencemutant antibody L chain 191Asp Val Val Met Thr Gln Ser Pro
Leu Ser Leu Pro Val Thr Pro Gly1 5 10 15Glu Pro Ala Ser Ile Ser Cys
Arg Ser Ser Gln Ser Leu Val His Ser 20 25 30Asn Ala Asn Thr Tyr Leu
His Trp Tyr Leu Gln Lys Pro Gly Gln Ser 35 40 45Pro Gln Leu Leu Ile
Tyr Lys Val Ser Asn Arg Phe Ser Gly Val Pro 50 55 60Asp Arg Phe Ser
Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Lys Ile65 70 75 80Ser Arg
Val Glu Ala Glu Asp Val Gly Val Tyr Tyr Cys Ser Gln Asn 85 90 95Thr
His Val Pro Pro Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys 100 105
110192112PRTArtificial Sequencemutant antibody L chain 192Asp Val
Val Met Thr Gln Ser Pro Leu Ser Leu Pro Val Thr Pro Gly1 5 10 15Glu
Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Leu Val His Ser 20 25
30Asn Asp Asn Thr Tyr Leu His Trp Tyr Leu Gln Lys Pro Gly Gln Ser
35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser Gly Val
Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu
Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu Asp Val Gly Val Tyr Tyr
Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro Thr Phe Gly Gln Gly Thr
Lys Leu Glu Ile Lys 100 105 110193112PRTArtificial Sequencemutant
antibody L chain 193Asp Val Val Met Thr Gln Ser Pro Leu Ser Leu Pro
Val Thr Pro Gly1 5 10 15Glu Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln
Ser Leu Val His Ser 20 25 30Asn Glu Asn Thr Tyr Leu His Trp Tyr Leu
Gln Lys Pro Gly Gln Ser 35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser
Asn Arg Phe Ser Gly Val Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser
Gly Thr Asp Phe Thr Leu Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu
Asp Val Gly Val Tyr Tyr Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro
Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys 100 105
110194112PRTArtificial Sequencemutant antibody L chain 194Asp Val
Val Met Thr Gln Ser Pro Leu Ser Leu Pro Val Thr Pro Gly1 5 10 15Glu
Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Leu Val His Ser 20 25
30Asn Phe Asn Thr Tyr Leu His Trp Tyr Leu Gln Lys Pro Gly Gln Ser
35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser Gly Val
Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu
Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu Asp Val Gly Val Tyr Tyr
Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro Thr Phe Gly Gln Gly Thr
Lys Leu Glu Ile Lys 100 105 110195112PRTArtificial Sequencemutant
antibody L chain 195Asp Val Val Met Thr Gln Ser Pro Leu Ser Leu Pro
Val Thr Pro Gly1 5 10 15Glu Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln
Ser Leu Val His Ser 20 25 30Asn His Asn Thr Tyr Leu His Trp Tyr Leu
Gln Lys Pro Gly Gln Ser 35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser
Asn Arg Phe Ser Gly Val Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser
Gly Thr Asp Phe Thr Leu Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu
Asp Val Gly Val Tyr Tyr Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro
Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys 100 105
110196112PRTArtificial Sequencemutant antibody L chain 196Asp Val
Val Met Thr Gln Ser Pro Leu Ser Leu Pro Val Thr Pro Gly1 5 10 15Glu
Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Leu Val His Ser 20 25
30Asn Asn Asn Thr Tyr Leu His Trp Tyr Leu Gln Lys Pro Gly Gln Ser
35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser Gly Val
Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu
Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu Asp Val Gly Val Tyr Tyr
Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro Thr Phe Gly Gln Gly Thr
Lys Leu Glu Ile Lys 100 105 110197112PRTArtificial Sequencemutant
antibody L chain 197Asp Val Val Met Thr Gln Ser Pro Leu Ser Leu Pro
Val Thr Pro Gly1 5 10 15Glu Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln
Ser Leu Val His Ser 20 25 30Asn Thr Asn Thr Tyr Leu His Trp Tyr Leu
Gln Lys Pro Gly Gln Ser 35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser
Asn Arg Phe Ser Gly Val Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser
Gly Thr Asp Phe Thr Leu Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu
Asp Val Gly Val Tyr Tyr Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro
Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys 100 105
110198112PRTArtificial Sequencemutant antibody L chain 198Asp Val
Val Met Thr Gln Ser Pro Leu Ser Leu Pro Val Thr Pro Gly1 5 10 15Glu
Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Leu Val His Ser 20 25
30Asn Gln Asn Thr Tyr Leu His Trp Tyr Leu Gln Lys Pro Gly Gln Ser
35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser Gly Val
Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu
Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu Asp Val Gly Val Tyr Tyr
Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro Thr Phe Gly Gln Gly Thr
Lys Leu Glu Ile Lys 100 105 110199112PRTArtificial Sequencemutant
antibody L chain 199Asp Val Val Met Thr Gln Ser Pro Leu Ser Leu Pro
Val Thr Pro Gly1 5 10 15Glu Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln
Ser Leu Val His Ser 20 25 30Asn Ile Asn Thr Tyr Leu His Trp Tyr Leu
Gln Lys Pro Gly Gln Ser 35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser
Asn Arg Phe Ser Gly Val Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser
Gly Thr Asp Phe Thr Leu Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu
Asp Val Gly Val Tyr Tyr Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro
Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys 100 105
110200112PRTArtificial Sequencemutant antibody L chain 200Asp Val
Val Met Thr Gln Ser Pro Leu Ser Leu Pro Val Thr Pro Gly1 5 10 15Glu
Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Leu Val His Ser 20 25
30Asn Lys Asn Thr Tyr Leu His Trp Tyr Leu Gln Lys Pro Gly Gln Ser
35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser Gly Val
Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu
Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu Asp Val Gly Val Tyr Tyr
Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro Thr Phe Gly Gln Gly Thr
Lys Leu Glu Ile Lys 100 105 110201112PRTArtificial Sequencemutant
antibody L chain 201Asp Val Val Met Thr Gln Ser Pro Leu Ser Leu Pro
Val Thr Pro Gly1 5 10 15Glu Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln
Ser Leu Val His Ser 20 25 30Asn Leu Asn Thr Tyr Leu His Trp Tyr Leu
Gln Lys Pro Gly Gln Ser 35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser
Asn Arg Phe Ser Gly Val Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser
Gly Thr Asp Phe Thr Leu Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu
Asp Val Gly Val Tyr Tyr Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro
Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys 100 105
110202112PRTArtificial Sequencemutant antibody L chain 202Asp Val
Val Met Thr Gln Ser Pro Leu Ser Leu Pro Val Thr Pro Gly1 5 10 15Glu
Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Leu Val His Ser 20 25
30Asn Ser Asn Thr Tyr Leu His Trp Tyr Leu Gln Lys Pro Gly Gln Ser
35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser Gly Val
Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu
Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu Asp Val Gly Val Tyr Tyr
Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro Thr Phe Gly Gln Gly Thr
Lys Leu Glu Ile Lys 100 105 110203112PRTArtificial Sequencemutant
antibody L chain 203Asp Val Val Met Thr Gln Ser Pro Leu Ser Leu Pro
Val Thr Pro Gly1 5 10 15Glu Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln
Ser Leu Val His Ser 20 25 30Asn Trp Asn Thr Tyr Leu His Trp Tyr Leu
Gln Lys Pro Gly Gln Ser 35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser
Asn Arg Phe Ser Gly Val Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser
Gly Thr Asp Phe Thr Leu Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu
Asp Val Gly Val Tyr Tyr Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro
Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys 100 105
110204112PRTArtificial Sequencemutant antibody L chain 204Asp Val
Val Met Thr Gln Ser Pro Leu Ser Leu Pro Val Thr Pro Gly1 5 10 15Glu
Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Leu Val His Ser 20 25
30Asn Tyr Asn Thr Tyr Leu His Trp Tyr Leu Gln Lys Pro Gly Gln Ser
35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser Gly Val
Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu
Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu Asp Val Gly Val Tyr Tyr
Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro Thr Phe Gly Gln Gly Thr
Lys Leu Glu Ile Lys 100 105 110205112PRTArtificial Sequencemutant
antibody L chain 205Asp Val Val Met Thr Gln Ser Pro Leu Ser Leu Pro
Val Thr Pro Gly1 5 10 15Glu Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln
Ser Leu Val His Ser 20 25 30Asn Arg Asn Thr Tyr Leu His Trp Tyr Leu
Gln Lys Pro Gly Gln Ser 35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser
Asn Arg Phe Ser Gly Val Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser
Gly Thr Asp Phe Thr Leu Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu
Asp Val Gly Val Tyr Tyr Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro
Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys 100 105
110206112PRTArtificial Sequencemutant antibody L chain 206Asp Val
Val Met Thr Gln Ser Pro Leu Ser Leu Pro Val Thr Pro Gly1 5 10 15Glu
Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln Ser Leu Val His Ser 20 25
30Asn Val Asn Thr Tyr Leu His Trp Tyr Leu Gln Lys Pro Gly Gln Ser
35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser Asn Arg Phe Ser Gly Val
Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu
Lys Ile65 70 75 80Ser Arg Val Glu Ala Glu Asp Val Gly Val Tyr Tyr
Cys Ser Gln Asn 85 90 95Thr His Val Pro Pro Thr Phe Gly Gln Gly Thr
Lys Leu Glu Ile Lys 100 105 110207112PRTArtificial Sequencemutant
antibody L chain 207Asp Val Val Met Thr Gln Ser Pro Leu Ser Leu Pro
Val Thr Pro Gly1 5 10 15Glu Pro Ala Ser Ile Ser Cys Arg Ser Ser Gln
Ser Leu Val His Ser 20 25 30Asn Pro Asn Thr Tyr Leu His Trp Tyr Leu
Gln Lys Pro Gly Gln Ser 35 40 45Pro Gln Leu Leu Ile Tyr Lys Val Ser
Asn Arg Phe Ser Gly Val Pro 50 55 60Asp Arg Phe Ser Gly Ser Gly Ser
Gly Thr Asp Phe Thr Leu Lys Ile65 70 75 80Ser Arg Val Glu Ala
Glu Asp Val Gly Val Tyr Tyr Cys Ser Gln Asn 85 90 95Thr His Val Pro
Pro Thr Phe Gly Gln Gly Thr Lys Leu Glu Ile Lys 100 105 110
* * * * *