U.S. patent application number 13/912335 was filed with the patent office on 2013-10-03 for anti-ilt7- antibody.
The applicant listed for this patent is SBI Biotech Co., Ltd.. Invention is credited to Naoko Arai, Minkwon Cho, Koji Ishida, Yumiko Kamogawa.
Application Number | 20130259872 13/912335 |
Document ID | / |
Family ID | 38188642 |
Filed Date | 2013-10-03 |
United States Patent
Application |
20130259872 |
Kind Code |
A1 |
Kamogawa; Yumiko ; et
al. |
October 3, 2013 |
ANTI-ILT7- ANTIBODY
Abstract
An antibody binding to IPC was obtained by using an animal cell
in which a cell membrane protein associatable with ILT7 was
co-expressed as an immunogen. The antibody of the invention has a
high specificity which allows immunological distinction between
other ILT family molecules and ILT7. The anti-ILT7 antibody of the
invention bound to IPC and inhibited the activity thereof. With the
anti-ILT7 antibody of the invention, the IPC activity can be
inhibited and an interferon-related disease can be treated or
prevented. ILT7 expression is maintained even in IPC in the
presence of IFN.alpha.. Therefore, an inhibitory action of IPC
activity by the anti-ILT7 antibody can be expected even in an
autoimmune disease patient with an increased production of
IFN.alpha..
Inventors: |
Kamogawa; Yumiko; (Tokyo,
JP) ; Cho; Minkwon; (Tokyo, JP) ; Arai;
Naoko; (Tokyo, JP) ; Ishida; Koji; (Tokyo,
JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SBI Biotech Co., Ltd. |
Tokyo |
|
JP |
|
|
Family ID: |
38188642 |
Appl. No.: |
13/912335 |
Filed: |
June 7, 2013 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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13302291 |
Nov 22, 2011 |
8470992 |
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13912335 |
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12064957 |
Apr 25, 2008 |
8084585 |
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PCT/JP2006/325391 |
Dec 20, 2006 |
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13302291 |
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Current U.S.
Class: |
424/152.1 ;
435/320.1; 435/332; 435/375; 435/69.6; 435/7.21; 435/70.21;
514/44R; 530/388.2; 536/23.53 |
Current CPC
Class: |
A61P 31/00 20180101;
A61P 37/02 20180101; G01N 33/577 20130101; A61P 43/00 20180101;
A61P 29/00 20180101; A61P 37/00 20180101; A61P 31/18 20180101; C07K
2317/24 20130101; G01N 33/566 20130101; C07K 2317/56 20130101; G01N
2333/555 20130101; A61P 35/00 20180101; A61P 19/02 20180101; C07K
2317/734 20130101; A61P 37/06 20180101; A61K 2039/545 20130101;
G01N 2333/705 20130101; C07K 2317/34 20130101; C07K 2317/77
20130101; C12N 2510/02 20130101; A61K 2039/505 20130101; A61P 17/00
20180101; C12N 5/00 20130101; C07K 16/28 20130101; G01N 33/6866
20130101; A61P 17/06 20180101; C07K 16/2803 20130101; G01N 33/56972
20130101 |
Class at
Publication: |
424/152.1 ;
530/388.2; 536/23.53; 435/320.1; 435/332; 435/69.6; 435/7.21;
435/375; 514/44.R; 435/70.21 |
International
Class: |
C07K 16/28 20060101
C07K016/28 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 20, 2005 |
JP |
2005-366465 |
Claims
1. A monoclonal antibody which binds to an extracellular domain of
human ILT7 or a fragment comprising its antigen binding region.
2. The monoclonal antibody or the fragment comprising its antigen
binding region according to claim 1, wherein the monoclonal
antibody binds to a human interferon producing cell.
3. A monoclonal antibody which is produced by a hybridoma ILT7#11
deposited under Accession number FERM BP-10704 or a hybridoma
ILT7#17 deposited under Accession number FERM BP-10705, or a
fragment comprising its antigen binding region.
4. The monoclonal antibody or the fragment comprising its antigen
binding region according to claim 1, wherein the monoclonal
antibody comprises amino acid sequences according to any of the
following i) to iii) as CDR1, CDR2, and CDR3 in the heavy chain
variable region and the light chain variable region: TABLE-US-00022
i) CDR1 of a heavy chain variable region: (SEQ ID NO: 58) SDYAWN;
CDR2 of a heavy chain variable region: (SEQ ID NO: 59)
YISYSGSTSYNPSLKSR; and CDR3 of a heavy chain variable region: (SEQ
ID NO: 60) SPPYYAMDY; CDR1 of light chain variable region: (SEQ ID
NO: 61) KASQDVGTAVA; CDR2 of a light chain variable region: (SEQ ID
NO: 62) WASTRHT; and CDR3 of a light chain variable region: (SEQ ID
NO: 63) QQYSSYPLT; ii) CDR1 of a heavy chain variable region: (SEQ
ID NO: 64) SYWIH; CDR2 of a heavy chain variable region: (SEQ ID
NO: 65) RIYPGTGSTYYNEKFKG; and CDR3 of a heavy chain variable
region: (SEQ ID NO: 66) YPTYDWYFDV; CDR1 of a light chain variable
region: (SEQ ID NO: 67) RASQSISNYLH; CDR2 of a light chain variable
region: (SEQ ID NO: 68) YASQSIS; CDR3 of a light chain variable
region: (SEQ ID NO: 69) QQSNSWPLT; iii) CDR1 of a heavy chain
variable region: (SEQ ID NO: 70) SDYAWN; CDR2 of a heavy chain
variable region: (SEQ ID NO: 71) YISYSGSTSYNPSLKSR; CDR3 of a heavy
chain variable region: (SEQ ID NO: 72) ALPLPWFAY; CDR1 of a light
chain variable region: (SEQ ID NO: 73) KASQDVGTAVA; CDR2 of a light
chain variable region: (SEQ ID NO: 74) WASTRHT; and CDR3 of a light
chain variable region: (SEQ ID NO: 75) QQYSSYPYT.
5. The monoclonal antibody or the fragment comprising its antigen
binding region according to claim 1, wherein the monoclonal
antibody comprises a mature sequence of an amino acid sequence
selected from any of the following combinations (a) to (c) as the
heavy chain variable region and the light chain variable region: ,
a heavy chain variable region of SEQ ID NO: 39 and a light chain
variable region of SEQ ID NO: 41; b) a heavy chain variable region
of SEQ ID NO: 43 and a light chain variable region of SEQ ID NO:
45; and c) a heavy chain variable region of SEQ ID NO: 47 and a
light chain variable region of SEQ ID NO: 49.
6. A polynucleotide encoding the monoclonal antibody or the
fragment comprising its antigen binding region according to claim 4
or 5.
7. A vector comprising a polynucleotide encoding the monoclonal
antibody or the fragment comprising its antigen binding region
according to claim 4 or 5.
8. A transformed cell retaining the vector according to claim 7 in
an expressible manner.
9. A method for producing the monoclonal antibody or the fragment
comprising its antigen binding region according to claim 4 or 5,
comprising the steps of: culturing the transformed cell according
to claim 8; and recovering the monoclonal antibody or the fragment
comprising its antigen binding region from the culture.
10. A hybridoma which produces either of the monoclonal antibodies
according to claim 1 or 2.
11. A hybridoma ILT7#11 deposited under Accession number FERM
BP-10704 or a hybridoma ILT7#17 deposited under Accession number
FERM BP-10705.
12. A method for producing a monoclonal antibody, comprising the
steps of: culturing the hybridoma according to claim 11; and
collecting the monoclonal antibody from the culture.
13. A method for producing a cell which produces a monoclonal
antibody which binds to an extracellular domain of human ILT7,
comprising the following steps of: (1) administering to an immune
animal a cell which expresses a exogenous protein comprising an
extracellular domain of human ILT7 and a exogenous molecule which
associates with human ILT7; and (2) selecting an antibody producing
cell which produces an antibody which binds to human ILT7 from the
antibody producing cell of the immune animal.
14. The method according claim 13, wherein the molecule which
associates with human ILT7 is a cell membrane protein.
15. The method according to claim 14, wherein the cell membrane
protein is Fc receptor .gamma.-chain.
16. The method according to claim 15, wherein the cell expressing
human ILT7 and the molecule which associates with human ILT7 is a
cell retaining the following (a) and (b) in an expressible manner:
(a) an exogenous polynucleotide encoding an amino acid sequence
comprising an extracellular domain of human ILT7; and (b) an
exogenous polynucleotide encoding Fc receptor .gamma.-chain.
17. The method according to claim 16, wherein the cell is an animal
cell.
18. The method according to claim 17, wherein the cell is a
human-derived cell.
19. The method according to claim 18, wherein the human-derived
cell is a 293T cell.
20. The method according to claim 13, additionally comprising a
step of cloning the antibody producing cell obtained by the method
according to claim 13.
21. A method for producing a monoclonal antibody which binds to an
extracellular domain of human ILT7, comprising the steps of:
culturing the antibody producing cell by the method according to
claim 8; and recovering the monoclonal antibody from the
culture.
22. A monoclonal antibody capable of recognizing human ILT7 or a
fragment comprising its antigen binding region which can be
obtained by the following steps of: (1) administering to an immune
animal a cell which exogenously expresses a protein comprising an
extracellular domain of human ILT7 and a molecule which associates
with human ILT7; (2) selecting an antibody producing cell which
produces the antibody which binds to human ILT7 from the antibody
producing cell of the immune animal; and (3) culturing the antibody
producing cell selected by step (2) and recovering an antibody
capable of recognizing human ILT7 from the culture.
23. An immunogen for producing an antibody which binds to an
extracellular domain of human ILT7, comprising an animal cell in
which (a) a polynucleotide which encodes an amino acid sequence
comprising an extracellular domain of human ILT7, and (b) a
polynucleotide which encodes Fc receptor .gamma.-chain are retained
in an exogenously expressible manner; or a cell membrane fraction
thereof.
24. The immunogen according to claim 23, wherein the animal cell is
a human-derived cell.
25. A method for detecting an interferon producing cell, comprising
the steps of: contacting a monoclonal antibody which binds to an
extracellular domain of human ILT7 or a fragment comprising its
antigen binding region with a test cell; and detecting the
monoclonal antibody or the fragment comprising its antigen binding
region which is bound to the cell.
26. A reagent for detecting an interferon producing cell comprising
a monoclonal antibody which binds to an extracellular domain of
human ILT7 or a fragment comprising its antigen binding region.
27. A method for inhibiting the activity of an interferon producing
cell, comprising a step of contacting any of the following
components with an interferon producing cell: (a) a monoclonal
antibody which binds to human ILT7 and inhibits the activity of an
interferon producing cell or a fragment comprising its antigen
binding region; and (b) an immunoglobulin into which a
complementarity-determining region of the monoclonal antibody
described in (a) is introduced or a fragment comprising its antigen
binding region.
28. A method for inhibiting the activity of an interferon producing
cell in a living organism, comprising a step of administering any
of the following components to a living organism: (a) a monoclonal
antibody which binds to human ILT7 and inhibits the activity of an
interferon producing cell or a fragment comprising its antigen
binding region; (b) an immunoglobulin into which a
complementarity-determining region of the monoclonal antibody
described in (a) is introduced or the fragment comprising its
antigen binding region; and (c) a polynucleotide which encodes any
of the components described in (a) or (b).
29. The method according to claim 27 or 28, wherein the activity of
the interferon producing cell is due to either the interferon
producing activity or the survival of the interferon producing
cell, or both of them.
30. An inhibitor for the activity of an interferon producing cell,
comprising any of the following components as an active ingredient:
(a) a monoclonal antibody which binds to human ILT7 and inhibits
the activity of an interferon producing cell or a fragment
comprising its antigen binding region; (b) an immunoglobulin into
which a complementarity-determining region of the monoclonal
antibody described in (a) is introduced or a fragment comprising
its antigen binding region; and (c) a polynucleotide which encodes
any of the components described in (a) or (b).
31. The inhibitor for the activity of an interferon producing cell
according to claim 30, wherein the activity of the interferon
producing cell is due to either the interferon producing activity
or the survival of the interferon producing cell, or both of them.
Description
TECHNICAL FIELD
[0001] The present invention relates to an antibody which binds to
human ILT7.
BACKGROUND ART
[0002] Interferon .alpha. (IFN.alpha.: hereinafter, "interferon" is
abbreviated as IFN) and interferon .beta. (IFN.beta.) are known as
type 1 IFNs which possess antiviral activity or antitumor activity.
On the other hand, it has also been revealed that IFN.alpha. is
related to autoimmune disease. For example, abnormal production of
IFN.alpha. has been reported in patients with the following
autoimmune diseases. It has also been suggested that symptoms of
the autoimmune diseases can be reduced by neutralization of
IFN.alpha..
[0003] Systemic lupus erythematosus (Shiozawa et al., Arthr. &
Rheum. 35, 412, 1992)
[0004] Chronic rheumatism (Hopkins et al., Clin. Exp. Immunol. 73,
88, 1988)
[0005] Cases in which symptoms of the autoimmune diseases had been
manifested or worsened by administration of recombinant IFN.alpha.2
or IFN were reported (Wada et al., Am. J. Gastroenterol. 90, 136,
1995; Perez et al., Am. J. Hematol. 49, 365, 1995; Wilson L E et
al, Semin Arthritis. Rheum. 32, 163-173, 2002.).
[0006] Further, it has also been revealed that IFN.alpha. induces
differentiation of dendritic cells. The dendritic cell is also an
antigen presenting cell. Therefore, it is considered that the
differentiation induction of dendritic cells consists an important
mechanism in autoimmune diseases. It has been suggested that there
is a deep association between the differentiation induction of
dendritic cells of IFN.alpha. and the onset of systemic lupus
erythematosus (Blanco et al., Science, 16:294, 1540-1543, 2001).
Thus, it has been pointed out that IFN.alpha. is closely related to
the antitumor activity as well as autoimmune diseases. In addition,
IFN.alpha. is deeply involved in the onset of psoriasis (Nestle F O
et al., J. Exp. Med. 202, 135-143, 2005).
[0007] Interferon Producing cells (IPCs) were identified as cells
which produce type 1 IFN in large quantities associated with virus
infection. Few IPCs are presented in the blood. It is considered
that peripheral blood lymphocytes account for 1% or less of IPCs.
However, IPCs have a very high capacity to produce IFN. IFN
producing capacity of IPCs reaches, for example, 3000
pg/mL/10.sup.4 cells. That is, it may be said that most of the
IFN.alpha. or IFN.beta. in the blood, which is produced at viral
infection, is resulted from IPCs, although there are few cells.
[0008] On the other hand, IPCs are undifferentiated lymphoid
dendritic cells which are considered as precursor cells of
dendritic cells. IPCs may be referred to as Plasmacytoid dendritic
cells. IPCs are differentiated into dendritic cells by virus
stimulation and induce the production of IFN.gamma. or IL-10 by T
cells. IPCs are also differentiated into dendritic cells by IL-3
stimulation. The differentiated dendritic cells by IL-3 stimulation
induce the production of Th2 cytokine (IL-4, IL-5, and IL-10) by T
cells. Thus, IPCs have properties which allow them to be
differentiated into distinct dendritic cells by different
stimulation.
[0009] Accordingly, IPCs have two profiles: IFN producing cells and
precursor cells of dendritic cells. Both cells play an important
role in immune system. In other words, IPC is one of the important
cells which support immune system in various aspects. [0010]
Non-patent document 1: Shiozawa et al., Arthr. & Rheum. 35,
412, 1992 [0011] Non-patent document 2: Hopkins et al., Clin. Exp.
Immunol. 73, 88, 1988 [0012] Non-patent document 3: Wada et al.,
Am. J. Gastroenterol. 90, 136, 1995 [0013] Non-patent document 4:
Parez et al., Am. J. Hematol. 49, 365, 1995 [0014] Non-patent
document 5: Bianco et al., Science, 16:294, 1540-1543, 2001 [0015]
Non-patent document 6: Ju et al., Gene. 2004 Apr. 28; 331: 159-64.
[0016] Non-patent document 7: Colonna M et al., Seminars in
Immunology 12: 121-127, 2000. [0017] Non-patent document 8:
Nakajima H. et al., J. Immunology 162: 5-8. 1999 [0018] Non-patent
document 9: Wilson L E et al, Semin Arthritis. Rheum. 32, 163-173,
2002 [0019] Non-patent document 10: Nestle F O et al., J. Exp. Med.
202, 135-143, 2005 [0020] Patent-document 1: WO03/12061 (U.S.
Patent Published Application No. 2003-148316)
DISCLOSURE OF THE INVENTION
Problems to be Solved by the Invention
[0021] An objective of the present invention is to provide an
antibody binding to immunoglobulin-Like transcript-7 (ILT7), and to
detect, identify, or isolate IPCs. Another objective of The present
invention is to regulate the activity of IPCs.
Means for Solving the Problems
[0022] In order to regulate activity of a humoral factor such as
IFN, administration of antibodies, which recognize the factor, is
effective. For example, the attempt to treat autoimmune diseases by
antibodies against interleukin (IL)-1 or IL-4 have been realized
(Guler et al., Arthritis Rheum., 44. S307, 2001). Further, it is
assumed that neutralizing antibodies can serve as therapeutic
agents of autoimmune diseases as with interferon (Stewart, T A.
Cytokine Growth Factor Rev. 14; 139-154, 2003). It can be predicted
that the same approach as described above is effective on IFN
produced by IPCs. However, such an approach is based on the
inhibition of effect of humoral factor after production of the
factor. If the production of the desired humoral factor can be
directly controlled, more substantial therapeutic effects can be
achieved.
[0023] Antibodies, which recognize human IPC, have been reported.
For example, anti-BDCA-2 monoclonal antibody is human IPC-specific
monoclonal antibody (Dzionek A. et al. J. Immunol. 165: 6037-6046,
2000). It is found that anti-BDCA-2 monoclonal antibody is
effective in inhibiting IFN production by human IPCs (J. Exp. Med.
194: 1823-1834, 2001.). In addition, it has also been reported that
monoclonal antibodies, which recognize interferon-producing cells
in mice, inhibit the production of interferon (Blood 2004 June 1;
103/11: 4201-4206. Epub 2003 December). It was reported that the
reduced number of dendritic cells was due to monoclonal antibodies
against plasmacytoid dendritic cells in mice (J. Immunol. 2003,
171: 6466-6477).
[0024] Similarly, if antibodies which recognize human IPCs and can
regulate the activity are provided, it will be useful. For example,
the present inventors have already shown that an antibody, which
recognizes Ly49Q, specifically binds to mouse IPCs. However, the
antibody against Ly49Q did not interfere with the activity of mouse
IPCs (Blood, 1 Apr. 2005, Vol. 105, No. 7, and pp. 2787-2792.;
WO2004/13325). On the other hand, ILT7 is known as a molecule whose
specific expression is seen in Plasmacytoid dendritic cells (Ju X S
et al. and Gene. 2004 Apr. 28; 331: 159-64.; WO03/12061). However,
any antibodies against ILT7 have not been obtained. Therefore, the
effects of antibodies on IPCs are also unknown.
[0025] ILT7 is a membrane protein containing an immunoglobulin-like
motif. It has been reported as one of the molecules expressed in
cells of the myeloid system or lymphatic system (Colonna M et al.,
Seminars in Immunology 12:121-127, 2000.). A plurality of molecules
with structures analogous to ILT7 is referred to as ILT family. ILT
family is also structurally similar to killer cell inhibitory
receptors (KIR). ILT7 has four C-type immunoglobulin-like domains
as with other molecules of ILT family. It is considered that ILT7
sends activation signals into the cell as with ILT1, ILT1-like
protein, ILT8, and LIR6a. It has been confirmed that a molecule
belonging to ILT family is expressed in hemocyte system cells
(Young et al., Immunogenetics 53: 270-278, 2001; "The KIR Gene
Cluster." Carrington, Mary and Norman, Paul. Bethesda (MD):
National Library of Medicine (US), NCBI; 2003).
[0026] Then, a high expression of ILT7 was detected in Plasmacytoid
dendritic cells (PDC) and a low expression of ILT7 was detected in
monocyte-derived dendritic cells (MDDC) by subtractive
hybridization. ILT2 and ILT3 were expressed in not only PDC but
also DC obtained from MDDC or CD34 positive cells. However, since
mRNA in ILT7 was specifically expressed in PDC, it was found that
the mRNA might serve as a marker of PDC. Additionally, it was found
that at that time, the expression of ILT7 was reduced by
stimulation of CpG (Ju X S et al. Gene. 2004 Apr. 28; 331: 159-64.;
WO03/12061).
[0027] The present inventors confirmed that specific expression of
ILT7 in IPC was facilitated through the study on human IPC. Then,
the present inventors attempted to produce antibodies of ILT7 and
to elucidate the effects. For example, molecules constituting ILT
families such as ILT2 and ILT3 have high conservation, particularly
in amino acid sequences of extracellular domains (FIG. 9). These
ILT families exhibit characteristic expression profiles in various
blood cells, respectively. Therefore, it is a very important
subject to obtain an antibody which can immunologically distinguish
between other ILT family molecules and ILT7. However, in fact, it
was difficult to produce an antibody which binds specifically to
human IPCs using ILT7 as an immunogen because of the obstacles
described below.
[0028] Generally, a protein produced by gene-recombination
technology is used as an immunogen in order to obtain an antibody
which recognizes a trace amount of proteins derived from living
organisms. The present inventors tried to express human ILT7 on the
basis of information of a base sequence of cDNA of human ILT7,
which had already been found, and the amino acid sequence coded by
the base sequence (GenBank Accession No. NM.sub.--012276). However,
the present inventors could not produce human ILT7 as a recombinant
under normal conditions.
[0029] The partial amino acid sequence of natural protein is often
tried to be used as an immunogen in order to obtain a protein
antibody. However, there are few amino acid sequences specific to
human ILT7 in proteins since homology to the amino acid sequences
is extremely high in ILT family. In addition, it is necessary to
select the region constituted of the portion that is recognized as
an epitope by antibodies on the surface of cells for the purpose of
allowing antibodies to recognize molecules on the surface of cells.
Therefore, it has been considered that formation of an antibody
which is specific to ILT7 by using a fragment amino acid sequence
as an immunogen is not realistic.
[0030] The present inventors showed that an antibody, which binds
to IPCs, could be obtained by using a special immunogen under such
conditions. Further, the present inventors found that the antibody
thus obtained specifically recognized human IPCs and further had an
effect of regulating the activity and thereby succeeded in
completing the present invention. That is, the present invention
relates to the following anti-ILT7 antibody, production method
thereof, and use thereof.
Effects of the Invention
[0031] The present invention provides an immunogen useful in
producing an antibody which recognizes human ILT7 and a production
method of anti-human ILT7 antibody using the immunogen. ILT7 is a
membrane protein belonging to ILT family. Particularly, the amino
acid sequence of the extracellular region is highly conserved among
ILT families. Therefore, it is extremely difficult to produce an
antibody which distinguishes between ILT families by general
immunization methods. The present inventors showed that the
antibody, which recognizes human ILT7, can be easily obtained by
using animal cells in which ILT7 is coexpressed with cell membrane
protein. Anti-ILT7 antibody, which can be obtained by the present
invention, has a high specificity which distinguishes cells
expressing other ILT families from those expressing human IPCs.
[0032] In a preferred embodiment, anti-human ILT7 antibody provided
by the present invention binds to human IPCs. In addition, the
antibody of the present invention specifically recognizes human
IPCs. Therefore, it is useful in detecting and isolating IPCs. IPC
is a cell which produces most of the type 1 interferon. Therefore,
the detection and isolation are important in diagnosis and study of
diseases that involve IPCs such as autoimmune diseases.
Particularly, according to the findings of the present inventors,
the expression of ILT7 in IPCs is not reduced under the presence of
IFN.alpha.. IFN.alpha. expression is often facilitated inpatients
with autoimmune diseases. This means that anti-ILT7 antibody of the
present invention can be used for the detection and isolation of
IPCs as to the patients with autoimmune diseases in which the
expression of IFN.alpha. is facilitated.
[0033] Anti-ILT7 antibody provided by the present invention has an
effect which regulates the activity of human IPCs in a preferred
embodiment. Therefore, the anti-ILT7 antibody of the present
invention can be used to inhibit the activity of IPCs. As described
previously, the expression of ILT7 in IPCs is not reduced under the
presence of IFN.alpha.. Therefore, if the inhibition of the
activity of IPCs by the antibody of the present invention is used,
a therapeutic effect on the patients with autoimmune diseases in
which the expression of IFN.alpha. is facilitated may be
expected.
[0034] Scant IPCs produce a large amount of IFN. Antibodies as many
as IFN molecules are necessary for neutralization of IFN. However,
producing cell activation is directly inhibited in the present
invention. As a result, a strong inhibitory effect on IFN can be
expected even if smaller amount of antibodies are used compared
with neutralization by anti-IFN antibody. Furthermore, in the case
where IFN is continuously produced, it is predicted that
neutralization by IFN antibodies is transient inhibition. In the
present invention, since the activity of IPCs is inhibited, IFN
production inhibiting effect can be expected over a long period of
time.
BRIEF DESCRIPTION OF THE DRAWINGS
[0035] FIG. 1a is a photograph in which the expression of mRNA of
ILT7 gene is examined by RT-PCR method. It is a result of the
analyzed expression of mRNA of ILT7 gene in human immunocytes.
[0036] FIG. 1b is a diagram in which the expression of mRNA of ILT7
gene in various human tissues and cells is compared and examined
using quantitative PCR method. The horizontal axis shows the
examined tissues and cells and the vertical axis shows the
expression level of ILT7, which is standardized according to the
expression level of GAPDH gene.
[0037] FIG. 2 is a diagram showing structures of ILT7 protein,
where FIG. 2(a) shows an amino acid sequence of ILT7 protein and
further shows the estimated secretion signal sequence and
transmembrane domain in the drawing, and FIG. 2(b) shows a
schematic diagram of ILT7 proteins that are encoded by constructed
expression vectors.
[0038] FIG. 3 is a diagram showing a result that ILT7 expression
vector and FcR.gamma. expression vector were introduced into cells
and the cell-surface expression of ILT7 molecules was examined by
FCM. The horizontal axis shows the fluorescence intensity detected
in anti-FLAG antibody, namely, the intensity of cell-surface
expression of ILT7 molecules to which FLAG tag was attached and the
vertical axis shows the number of cells.
[0039] FIG. 4 shows photographs in which ILT7 expression vector and
FcR.gamma. expression vector were introduced into cells and the
association of molecules was analyzed by immunoprecipitation and
Western blotting. The left side diagrams show results that ILT7
molecule was blotted with anti-FLAG antibody after
immunoprecipitating FcR.gamma. molecule with anti-myc antibody (the
drawing above) and FcR.gamma. molecule was blotted with anti-myc
antibody (the drawing below). Similarly, the right side diagrams
show results that ILT7 molecule was blotted with anti-FLAG antibody
after immunoprecipitating FcR.gamma. molecule with anti-FLAG
antibody (above) and FcR.gamma. molecule was blotted with anti-myc
antibody (below).
[0040] FIG. 5 is a photograph in which glycosylation of ILT7
molecule was examined by introduction of ILT7 expression vector and
FcR.gamma. expression vector into the cell and N-glycosidase
treatment. The left side of the photograph shows the size of ILT7
in the case where ILT7 was not treated with N-glycosidase and the
right side of the photograph shows the size of ILT7 in the case
where N-glycosidase treatment was performed.
[0041] FIG. 6a is a diagram in which the responsiveness of the
produced anti-ILT7 monoclonal antibody was examined by FCM
analysis. (a) shows a result that binding of anti-ILT7 antibody to
IPC fraction of BDCA-2 positive was analyzed by using human
peripheral blood lymphocytes and double staining with the anti-ILT7
antibody and anti-BDCA-2 antibody. The vertical axis shows the
responsiveness to BDCA-2 antibody and the horizontal axis shows the
responsiveness to each of the produced anti-ILT7 antibodies.
[0042] FIG. 6b is a diagram in which the responsiveness of the
produced anti-ILT7 monoclonal antibodies was examined by FCM
analysis. (b) shows a result in which binding of anti-ILT7 antibody
to ILT7 molecule was examined by using 293T cells into which ILT7
and FcR.gamma. expression vectors had been introduced. The vertical
axis shows the responsiveness of anti-FLAG antibody, namely, the
intensity of expression of ILT7 molecules to which FLAG tag was
attached and the horizontal axis shows the responsiveness of
respective anti-ILT7 antibodies.
[0043] FIG. 7 is a diagram in which among the produced anti-ILT7
monoclonal antibodies, the responsiveness of two clones to human
peripheral blood lymphocytes was examined by FCM analysis. Three
graphs on the left shows the results of #11 and three graphs on the
right shows the results of #17. In the left side diagrams, each
axis with the mark of ILT7 shows the responsiveness of ILT7#11.
Similarly, in the right side diagrams, each axis with the mark of
ILT7 shows the responsiveness of ILT7#17.
[0044] FIG. 8 is a result in which binding activity of the produced
anti-ILT7 monoclonal antibodies ILT7#11 and ILT7#17 to human
lymphocytes was compared with that of anti-BDCA-2 antibody and
examined. The vertical axis shows the responsiveness of anti-CD123
antibody and the horizontal axis shows the responsiveness of each
antibody. That is, each antibody binds to a portion of CD123
positive cell. It is a diagram showing the results in which the
responsiveness was analyzed when lymphocyte cells were stimulated
by two kinds of CpGs and IFN.alpha..
[0045] FIG. 9a is a diagram showing amino acid sequences of family
molecules with high homology to ILT7 molecules. Each amino acid
sequence of the extracellular region is mainly shown as an
alignment; FIG. 9b is a continuation of FIG. 9a; and FIG. 9c is a
continuation of FIG. 9b.
[0046] FIG. 10 is a result in which the responsiveness of the
produced anti-ILT7 monoclonal antibodies ILT7#11 and ILT7#17 to
ILT1, ILT2, and ILT3 molecules was examined using cells into which
their expression vectors were introduced. The upper diagram shows
the results where the responsiveness to cells in which ILT7
molecules with a FLAG tag had been coexpressed with FcR.gamma. was
reaffirmed. The lower diagram shows the results where the
responsiveness to cells into which ILT1, ILT2, ILT3, and FcR.gamma.
were introduced (left diagram: ILT7#11, right diagram: ILT7#17).
The horizontal axis shows the responsiveness of each anti-ILT7
antibody.
[0047] FIG. 11 is a diagram showing the effect of the produced
anti-ILT7 monoclonal antibodies ILT7#11 and ILT7#17 on the
interferogenic capacity of human lymphocytes. In the diagram, the
horizontal axis shows IFN.alpha. concentration in a culture
supernatant when human lymphocytes were stimulated by influenza
virus and the vertical axis shows the treated antibodies. The term
"no infections" indicates the results of cells which were not
stimulated by influenza virus.
[0048] FIG. 12 is a diagram showing CDC activity of the produced
anti-ILT7 monoclonal antibodies ILT7#37, ILT7#28, and ILT7#33. Even
when anti-ILT7 monoclonal antibodies obtained from any hybridoma
were used, 80% or more of CDC activity was exhibited at the
antibody concentration of 0.1 .mu.g/ml or higher. In the case of
antibodies other than anti-ILT7 monoclonal antibody, CDC activity
to target cells was not observed.
[0049] FIG. 13 is a diagram showing internalization to target cells
of the produced anti-ILT7 monoclonal antibodies ILT7#17, ILT7#26,
ILT7#37, ILT7#28, and ILT7#33.
[0050] The fluorescence intensity of APC is an indicator of the
amount of ILT7-anti-ILT7 antibody immune complex which was present
on the surface of cells before incubation and it is detected
regardless of whether ILT7-anti-ILT7 antibody immune complex is
present on the target cell surface or is incorporated into the cell
after incubation. On the other hand, the fluorescence intensity of
FITC is an indicator of the amount of ILT7-anti-ILT7 antibody
immune complex which remains on the surface of cells after
incubation. That is, the fluorescence intensity of FITC is
decreased by internalization.
BEST MODE FOR CARRYING OUT THE INVENTION
[0051] It has been reported that human ILT7 (immunoglobulin-like
transcript-7) is a molecule which is specifically expressed in
Plasmacytoid dendritic cells (Gene. 2004 Apr. 28; 331:1 59-64.;
WO03/12061). Alternatively, it is also known that human ILT7 can be
used as a predictive indicator for prognosis of lymphoma
(WO2005/24043). However, a method for producing an antibody capable
of recognizing human ILT7 has not been established.
[0052] Human ILT7 consists of 499 amino acid residues as shown in
SEQ ID NO: 2 and it is a type 1 transmembrane protein comprising
four immunoglobulin-like domains in the structure and one
transmembrane region (445-466; from 429 to 450 in SEQ ID NO: 2).
Among 444 amino acid residues including N-terminal, 16 amino acid
residues (from -15 to -1, in SEQ ID NO: 2) are signal sequences and
17 to 444 amino acid residues (from 1 to 428, in SEQ ID NO: 2)
constitute an extracellular domain. On the other hand, the
C-terminal region is an intracellular domain. Most of portions of
the human ILT7 are extracellular domains and 33 amino acid residues
constitute an intracellular domain (from 467 to 499; from 451 to
483, in SEQ ID NO: 2). It is not predicted that a motif, which is
involved in signalization, is present in an intracellular domain. A
full length amino acid sequence of human ILT7 is shown in SEQ ID
NO: 2 and a base sequence of cDNA encoding the amino acid sequence
is shown in SEQ ID NC: 1. Here, the coding regions of the matured
peptide (72) . . . (1520), shown in SEQ ID NO: 1, do not comprise
the termination and initiation codons. That is, protein coding
sequences which comprise the termination and initiation codons in
SEQ ID NO: 1 are from 24 to 1523.
[0053] It is considered that the ligand signal is transmitted to
cells by association of human ILT7 with a signal-transducing
molecule. For example, most of the Fc receptor .gamma.-chains are
present in cells. In addition, the intracellular domain contains an
immunoreceptor tyrosine-based activation motif (ITAM) which is
involved in signalization. ITAM is an amino acid sequence portion,
which is commonly seen in adaptor molecules that are associated
with immunoreceptors such as Fc receptors. A motif such as YxxL
(SEQ ID NO: 76), which is a target of tyrosine phosphorylation, is
comprised in ITAM and the signal is transmitted by the
phosphorylation. Known examples of the signal-transducing molecule,
which comprises ITAM in an intracellular domain, include CD3.zeta.
and DAP12 in addition to Fc receptor .gamma.-chain. Among these
signal-transducing molecules, the molecule associated with human
ILT7 is predicted to be the Fc receptor .gamma.-chain. Currently, a
ligand, which binds to human ILT7, has not been found.
[0054] The present inventors confirmed that ILT7 was specifically
expressed in human IPCs by gene expression analysis. The present
inventors considered that it would be useful in the study of IPCs
if an antibody capable of distinguishing human ILT7 from other
molecules immunologically could be obtained. However, many
molecules with similar structures exist in ILT family including
ILT7. Molecules such as ILT1, ILT2, ILT3, ILT4, ILT5, ILT6, or
LIR-8 comprise highly homologous amino acid sequences, particularly
in their extracellular domains. Therefore, the present inventors
considered that it was difficult to obtain an antibody capable of
distinguishing between these molecules using a domain peptide
comprising a partial amino acid sequence which constitute an
extracellular domain as an immunogen. Then, the present inventors
have tried to produce an antibody against human ILT7 using the
cells expressing human ILT7 as immunogens.
[0055] However, the use of general expression vectors did not cause
the expression of cDNA of human ILT7 in animal cells. It has been
reported that ILT1 molecule having a structure very similar to ILT7
associates with the Fc receptor .gamma.-chain. That is, when cells
in which the Fc receptor .gamma.-chain was expressed such as RBL
(rat basophilic leukemia) cells and P815 (mouse mastocytoma) cells
were used as host cells, the expression of ILT1 on the cell surface
was observed. However, if ILT1 was forced to be expressed in 293
cells in which Fc receptor .gamma.-chain was not originally
expressed, the cell-surface expression was not observed. On the
other hand, it was shown that the cell-surface expression of ILT1
could be confirmed when ILT1 was coexpressed with the Fc receptor
.gamma.-chain (Nakajima H. et al., J. Immunology 162:5-8.1999).
However, there is no information about an immunogen for producing
ILT7 antibodies.
[0056] For example, in the report, RBL cells into which ILT1 gene
is introduced are used as immunogens to produce ILT1 antibodies.
The present inventors tried to produce ILT7 antibodies using the
combination of RBL cells with ILT7 gene in the same manner as
described. However, even if ILT7 was forced to be expressed in RBL
cells (P815), the cell-surface expression of ILT7 was not observed,
and therefore it could not be used as an immunogen.
[0057] The present inventors have conducted dedicated research in
order to obtain the antibody capable of recognizing human ILT7. As
a result, the present inventors found that the desired antibody
could be produced by using a specific transformed cell as an
immunogen and completed the present invention. That is, the present
invention relates to a monoclonal antibody which binds to the
extracellular domain of human ILT7, and relates to a fragment
comprising its antigen binding region.
[0058] In the present invention, human ILT7 can be defined as a
natural molecule which is expressed in human IPCs or a molecule
which is immunologically equivalent to ILT7 which is expressed in
human IPCs. In the present invention, the binding of antibodies to
human ILT7 can be confirmed, for example, as follows.
[0059] Confirmation Based on Responsiveness to Human Cells:
[0060] According to the findings of the present inventors, specific
expression of human ILT7 was observed in human IPCs. Originally,
human ILT7 was isolated as a gene whose expression is seen in
Plasmacytoid dendritic cells (Blood. 2002 100; 3295-3303, Gene.
2004 Apr. 28; 331:159-64.). In addition, it is also known that it
can be used as a marker of Plasmacytoid dendritic cells
(WO03/12061). It is assumed that Plasmacytoid dendritic cells and
IPCs are mostly identical cell populations or their large portions
are common. Therefore, there is no contradiction between these
reports and the findings of the present inventors.
[0061] Considering such expression profile of human ILT7, first,
the binding activity of IPCs or Plasmacytoid dendritic cells to at
least a certain subset is one of the important characteristics of
the antibody which binds to human ILT in the present invention.
Cell surface markers specific to respective cell populations can be
used to determine whether a certain cell is IPC or Plasmacytoid
dendritic cell. For example, binding to the desired cells can be
confirmed by double staining with the antibody which binds to cell
surface markers and the antibody whose binding activity should be
checked. That is, IPCs in the present invention comprises, for
example, cells which express BDCA2.
[0062] Confirmation Based on Responsiveness to Transformed Cells
Expressing Human ILT7 Gene:
[0063] The present inventors found that an immunological
characteristic of ILT7 expressed in human IPCs was reconstructed
when expression of human ILT7 gene was carried out under a specific
condition. Therefore, the responsiveness to human ILT7 can also be
confirmed based on the responsiveness of antibodies to cells into
which a gene encoding ILT7 is artificially introduced. Namely, the
present invention relates to a monoclonal antibody which comprises
the amino acid sequence constituting an extracellular domain as the
extracellular domain and binds to a molecule coexpressed with the
signal-transducing molecule or relates to a fragment comprising its
antigen binding region. Here, the extracellular domain is composed
of an amino acid sequence which corresponds to the 17th to 444th
position of the N terminal amino acid sequence shown in SEQ ID NO:
2 (from 1 to 42B in SEQ ID NO: 2).
[0064] For example, the immunological characteristic of ILT7
expressed inhuman IPCs is maintained in cells co-transfected with
an expression vector comprising a DNA encoding human ILT7 and an
expression vector comprising a DNA encoding the signal-transducing
molecule. Therefore, a transformed cell, which coexpresses human
ILT7 and the signal-transducing molecule, is preferable to confirm
the binding affinity of antibodies to the extracellular domain of
human ILT7 in the present invention. In the present invention, it
is desirable to use a cell, which is not transformed as controls
when the responsiveness of antibodies, is confirmed by using the
transformed cell. Further, it is also important to confirm that the
binding of antibodies is not detected using the same host cell
which expresses only the signal-transducing molecule as a
control.
[0065] In the present invention, a molecule, which induces the
expression of human ILT7 on the cell surface, can be used as the
signal-transducing molecule for the coexpression. The
signal-transducing molecule in the present invention can also be
defined as a molecule which can impart the immunological
characteristic of natural human ILT7 to at least the extracellular
domain of ILT7 molecule in a cell which expresses ILT7. As used
herein, the term "immunological characteristic" of natural human
ILT7 means recognition by an antibody which binds to human
IPCs.
[0066] Specifically, it is preferable to use Fc receptor
.gamma.-chain or DAP12 as a signal-transducing molecule. In the
present invention, the Fc receptor .gamma.-chain is particularly
preferable as the signal-transducing molecule. The Fc receptor
.gamma.-chain is a molecule consisting of amino acid sequences
shown in SEQ ID NO: 16. The signal-transducing molecule may be a
fragment as long as human ILT7 to be coexpressed is localized at
the cell surface. As long as human ILT7 to be coexpressed is
localized at the cell surface, the mutation or addition of the
amino acid sequence is permitted in the amino acid sequences shown
in SEQ ID NO: 16. That is, the present invention provides methods
for producing cells which produce a monoclonal antibody which binds
to the extracellular domain of human ILT7, comprising the following
steps of:
[0067] (1) administering a cell which exogenously expresses a
protein comprising extracellular domain of human ILT7 and a
molecule comprising amino acid sequences described in SEQ ID NO: 16
to immune animals; and
[0068] (2) selecting an antibody producing cell which produces the
antibody which binds to human ILT7 from antibody producing cells of
the immune animals.
[0069] Subsequently, as the antibody which binds to human ILT7 in
the present invention, it is preferable to use an antibody in which
crossing with cell populations which are known to express ILT
families other than ILT7 is not observed. Specifically, as the
antibody which binds to human ILT7 in the present invention, it is
preferable to use an antibody in which the binding to the cell
populations which are known to express ILT families other than ILT7
cannot be observed under the same condition as the condition in
which the binding to IPCs was confirmed. As already described, for
example, ILT2 and ILT3 are expressed in not only PDC but also DC
obtained from MDDC or CD34 positive cells (Gene. 2004 Ap 28; 331:
159-64.). On the other hand, the expression ILT7 cannot be detected
due to the differentiation of TPCs into dendritic cells. Therefore,
the antibody cannot detect the binding to DCs obtained from MDDC or
CD34 positive cells under the condition in which the binding to
IPCs can be confirmed is comprised in the antibody which binds to
human ILT 7 in the present invention.
[0070] The following expression patterns as to other ILT family
molecules have been reported ("The KIR Gene Cluster" Carrington,
Mary and Norman, Paul. Bethesda (MD): National Library of Medicine
(US), NCBI; 2003, Gene. 2004 Apr. 28; 331: 159-64.). Therefore, an
antibody which binds to human IPCs or PDCs and whose binding to the
following cells cannot be confirmed is included in an antibody
having specificity to ILT7:
[0071] ILT1; myeloid lineage cells (monocytes, DCs derived from
monocytes, macrophages);
[0072] ILT2; PDCs, B cells, CD34 positive cells, DCs derived from
CD34 positive cells, and DCs derived from monocytes;
[0073] ILT3; PDCs and DCs;
[0074] ILT5; monocytes, DCs derived from CD34 positive cells, and
DCs derived from monocytes; and
[0075] ILT8; monocyte lineage cells.
[0076] That is, the monoclonal antibody, which binds to the
extracellular domain of human ILT7 in the present invention
preferably, comprises a monoclonal antibody which has the following
immunological characteristics:
[0077] a) the monoclonal antibody binds to human IPCs; and
[0078] b) the binding of the monoclonal antibody to one or more
cells selected from the group consisting of monocytes, macrophages,
B cells, CD34 positive cells, and dendritic cells derived from
these cells cannot be confirmed under the condition for binding to
human IPCs.
[0079] As the monoclonal antibody of the present invention, it is
preferable to use an antibody in which the binding to monocytes,
macrophages, B cells, CD34 positive cells, and dendritic cells
derived from these cells cannot be confirmed under the condition
for binding, particularly to human IPCs.
[0080] Alternatively, the monoclonal antibody, which binds to the
extracellular domain of human ILT7 in the present invention,
preferably comprises a monoclonal antibody which has the following
immunological characteristics:
[0081] c) the monoclonal antibody binds to the transformed cell
which is co-transfected with an expression vector expressively
carrying the DNA encoding human ILT7 and an expression vector
expressively carrying the DNA encoding the signal-transducing
molecule;
[0082] d) the binding to the host cell prior to transformation
cannot be confirmed under the condition for binding to the
co-transfected cells as described in c); or
[0083] the monoclonal antibody of the present invention comprises a
monoclonal antibody which has the following immunological
characteristics:
[0084] e) the binding to the host cell which expresses only the
signal-transducing molecule cannot be confirmed under the condition
for binding to the co-transfected cells as described in c).
[0085] In the present invention, the fact that anti-ILT7 monoclonal
antibody does not intersect with the ILT family of other molecules
can be confirmed using cells in which each ILT family was forced to
be expressed. That is, for forced expression, cDNA encoding each
ILT family of amino acid sequences is introduced into an
appropriate host cell. The anti-ILT7 monoclonal antibody whose
crossing should be confirmed is made to contact with the obtained
transformed cell. Then, it can be confirmed that if the binding of
the antibody to the cell, which expresses ILT family molecules
other than ILT7, is not observed, the antibody is able to
immunologically distinguish between ILT7 and other ILT family
molecules. For example, in examples described below, the fact that
the anti-ILT7 monoclonal antibody obtained by the present invention
does not intersect with ILT1, ILT2, and ILT3 is confirmed.
Therefore, a preferable example of the monoclonal antibody in the
present invention is the monoclonal antibody binding to ILT7 in
which the binding to ILT1, ILT2, and ILT3 cannot be detected under
the same condition.
[0086] Particularly, ILT2 and ILT3 are genes whose expression in
IPCs has been confirmed (Ju at al. Gene 331, 159-164, 2004).
However, these molecules may show expression profiles unique to
each cell type depending on the respective differentiation levels
in IPCs or conditions such as the stimulation with viruses or other
cytokines. The use of an antibody, which is able to immunologically
distinguish these ILT family molecules from ILT7, allows for
specifically detecting changes in the expression of ILT7.
[0087] The binding of a monoclonal antibody whose binding activity
should be confirmed to various kinds of cells can be confirmed
based on, for example, the principle of flow cytometry. In order to
confirm the responsiveness of antibodies based on the principle of
flow cytometry, it is advantageous to label antibodies with
molecule or atomic group which produces a detectable signal in
advance. Generally, the fluorescent or luminescent labels are
used.
Fluorescence-activated cell sorter (FACS) can be used to analyze
the binding of the fluorescent-labeled antibodies to cells based on
the principle of flow cytometry. The use of FACS allows for
efficiently confirming the binding of a plurality of antibodies to
a plurality of cells.
[0088] Specifically, for example, antibody A which has been
previously found to be able to identify IPCs and antibody B whose
binding characteristics to IPCS should be analyzed are reacted with
cell populations comprising IPCs at the same time. Antibody A and
antibody B are labeled with a fluorescence signal which is mutually
distinguished by these antibodies in advance. In the case where
both signals are detected from the same cell populations, the
binding of those antibodies to the same cell populations can be
confirmed. In other words, it is found that both antibodies A and B
have the same binding characteristics. In the case where they bind
to different cell populations, it is clear that both antibodies
have distinct binding characteristics.
[0089] A preferable example of the monoclonal antibody in the
present invention may comprise a monoclonal antibody which is
produced by hybridoma ILT7#11 or ILT7#17. Hybridoma ILT7#11 and
hybridoma ILT7#17 have been deposited with National Institute of
Advanced Industrial Science and Technology, International Patent
Organism Depositary under Accession Nos. FERM BP-10704 and FERM
BP-10705 on Oct. 21, 2005.
[0090] The specified depository content is as follows:
(a) Appellation and address of depository institution
Appellation: National Institute of Advanced Industrial Science and
Technology, International Patent Organism Depositary
[0091] Address: AIST Tsukuba Central 6, 1-1-1, Higashi,
Tsukuba-shi, Ibaraki, Japan (zip code 305-8566) (b) Deposited date:
Oct. 21, 2005 (c) Accession number: FERM BP-10704 (hybridoma
ILT7#11) (c) Accession number: FERM BP-10705 (hybridoma
ILT7#17)
[0092] The monoclonal antibody of the present invention may be a
fragment comprising its antigen binding region. For example, an
antibody fragment comprising the antigen binding region which is
obtained by enzymatic digestion of IgG can be used as the antibody
in the present invention. Specifically, antibody fragments such as
Fab and F(ab').sub.2 can be obtained by digestion with papain or
pepsin. It is well known that these antibody fragments can be used
as antibody molecules which have affinity for antibodies.
Alternatively, antibodies constructed by genetic recombination can
also be used as long as satisfactory antigen-binding activity is
maintained. Examples of the antibodies constructed by genetic
recombination comprise chimeric antibodies, CDR-transplanted
antibodies, single chain Fvs, diabodies, linear antibodies, and
polyspecific antibodies formed of antibody fragments. It is common
knowledge that these antibodies can be given by using monoclonal
antibodies or antibody producing cells which produce the
antibodies.
[0093] The monoclonal antibody of the present invention can be
obtained by using a specific transformed cell as an immunogen. That
is, the present invention relates to a method for producing cells
which produce a monoclonal antibody which binds to the
extracellular domain of human ILT7, comprising the following steps
of:
[0094] (1) administering a cell which expresses an exogenous
protein comprising extracellular domain of human ILT7 and an
exogenous molecule which is associated with human ILT7 to immune
animals; and
[0095] (2) selecting an antibody producing cell which produces the
antibody which binds to human ILT7 from antibody producing cells of
the immune animals.
[0096] The antibody producing cells thus obtained or the
immortalized antibody producing cells are cultured and the desired
monoclonal antibodies can be recovered from the cultures. With
reference to the method for immortalizing antibody producing cells,
various methods are known.
[0097] In the method for producing the monoclonal antibody of the
present invention, usable examples of the molecule, which is
associated with human ILT7 for producing a transformed cell to be
used as an immunogen, comprise cell membrane proteins. Among them,
a signal-transducing molecule, which is localized in cell
membranes, is preferable to use as a cell membrane protein in the
present invention. The term "signal-transducing molecule" means a
molecule which is associated with proteins and cells having
receptor structures in the extracellular domain and transmits the
stimulation of binding of ligands to receptors into cells. Examples
of the signal-transducing molecule comprise Fc receptor
.gamma.-chain, DAP12, or the like. For example, Fc receptor
.gamma.-chain is preferable to use as a cell membrane protein in
the present invention. Amino acid sequences of human DAP12 and Fc
receptor .gamma.-chain as well as a base sequence of cDNA, which
encodes the sequences, are publicly known. Abase sequence of human
Fc receptor .gamma.-chain and an amino acid sequence which is
encoded by the base sequence are shown in SEQ ID NOs: 15 and 16,
respectively.
[0098] In the present invention, a transformed cell to be used as
an immunogen can be obtained by preparing, for example, a cell
expressively carrying the following (a) and (b):
[0099] (a) an exogenous polynucleotide encoding an amino acid
sequence comprising an extracellular domain of human ILT7; and
[0100] (b) an exogenous polynucleotide encoding Fc receptor
.gamma.-chain.
[0101] In the present invention, an exogenous polynucleotide means
a polynucleotide which is artificially introduced into a host cell.
When human cells are used as cells, human genes are introduced into
human cells. In such a combination, an artificially introduced
polynucleotide means the exogenous polynucleotide. Therefore,
ectopic expression of human ILT7 or human Fc receptor .gamma.-chain
is comprised in expression of the exogenous polynucleotide.
[0102] As used herein, the term "extracellular domain of human
ILT7" means the amino acid sequence from the 17th to 444th position
of the amino acid sequence described in SEQ ID NO: 2 which
corresponds to the extracellular domain of the amino acid sequence
(from 1 to 428 in SEQ ID NO: 2). As an amino acid sequence
comprising the extracellular domain of human ILT7 in the present
invention, it is preferable to use the amino acid sequence which
comprises each region, for example, starting from the N terminal,
in order of the following:
[Signal sequence+extracellular domain+transmembrane
domain+intracellular region]
[0103] Alternatively, an amino acid sequence, which partially lacks
an intracellular region as described below, is included in the
amino acid sequence comprising the extracellular domain of human
ILT7 in the present invention.
[Signal sequence+extracellular domain+transmembrane domain+a
portion of intracellular region]
[0104] Furthermore, a structure, which lacks an intracellular
region as mentioned below, is included in the amino acid sequence
comprising the extracellular domain of human ILT7 in the present
invention.
[Signal sequence+extracellular domain+transmembrane domain]
[0105] In the structure, regions other than the extracellular
domain may be amino acid sequences which are selected from the
amino acid sequence shown in SEQ ID NO: 2, or may be combined with
other amino acid sequences having homology with the regions. For
example, the amino acid sequence constituting a signal sequence, a
transmembrane domain, and an intracellular region may be an amino
acid sequence of ILT family molecules other than ILT7. Or, it may
be combined with the amino acid sequence of ILT family in species
other than human. Further, the amino acid sequence, which
constitutes regions other than the extracellular domain, may
comprise a mutation in the range capable of maintaining the
function of each region. Alternatively, other regions may intervene
between each region. For example, an epitope tag such as FLAG can
also be inserted between the signal sequence and the extracellular
domain. Particularly, the signal sequence is removed by processing
during its transfer to the cell membrane surface after being
translated into protein. Therefore, arbitrary amino acid sequence,
which induces transit of the translated protein to the cell
membrane, can be used as the signal sequence. More specifically, it
is preferable to use the amino acid sequence (SEQ ID NO: 2) of
human ILT7 as the amino acid sequence comprising the extracellular
domain of human ILT7.
[0106] Therefore, in the present invention, an arbitrary base
sequence which encodes the amino acid sequence constituting the
above-mentioned structure [signal sequence+extracellular
domain+transmembrane domain+intracellular region] can be used as
the polynucleotide which constitutes the exogenous polynucleotide
described in (a). For example, the amino acid sequence of SEQ ID
NO: 2 is encoded by the base sequence described in SEQ ID NO:
1.
[0107] In the present invention, an expression vector expressively
carrying the above-mentioned polynucleotides (a) and (b) may be
introduced to an appropriate host cell in order to obtain a
transformed cell to be used as an immunogen. The Polynucleotides
(a) and (b) can be carried on one vector or different vectors. When
each polynucleotide is carried on different vectors, the host cells
are co-transfected with two kinds of vectors.
[0108] Preferable examples of the host cell in the present
invention comprise mammalian cells. Specific examples of the host
cell comprise cells derived from humans, monkeys, mice or rats.
Particularly, the cells derived from humans are preferable as host
cells. For example, it is preferable to use 293T cells derived from
human as the host cell in the present invention. 293T cells can be
obtained as ATCC CRL-11268. In addition, cells derived from immune
animals can also be used as host cells. When cells derived from
immune animals are used as immunogens, little immunological
response to host cells is given. For that reason, an antibody
against the extracellular domain of exogenously expressed ILT7 can
be obtained efficiently. Therefore, for example, when mice are used
as immune animals, cells derived from mice can also be used as host
cells.
[0109] The above-mentioned polynucleotides can be transformed into
cells by carrying them on a vector capable of inducing expression
in host cells. Commercially available vectors, which can induce the
expression in mammalian cells, may be used. Expression vectors such
as pCMV-Script(R) Vector, PSG5 Vector (manufactured by Stratagene),
pcDNA3.1 (manufactured by Invitrogen) can be used for the present
invention.
[0110] The transformed cells thus obtained are administered to
immune animals together with additional components such as
adjuvants, if necessary. Usable examples of the adjuvant include
Freund's complete adjuvant, and the like. In case of using mice as
immune animals, the transformed cells can be administered in the
range of 10.sup.4 to 10.sup.9 cells, more specifically 10.sup.4 to
10.sup.6 cells. Generally, multiple doses of immunogen are given at
regular intervals until the antibody titer is elevated. For
example, in the case of a short-term immunization, the transformed
cells are administered at 2 to 4 day intervals, more specifically
at intervals of 3 days. After administering twice or three times,
antibody producing cells can be recovered. Alternatively, they are
administered once weekly and antibody producing cells can also be
recovered after administering five or six times.
[0111] In the present invention, the recovered antibody producing
cells are cloned to give monoclonal antibodies. It is preferable
that the antibody producing cells are immortalized for cloning. For
example, the cell fusion method as typified by the hybridoma method
or transformation stein-Barr virus can be used as the method of
immortalization of antibody producing cells.
[0112] As for antibody producing cells, one cell produces one kind
of antibody. Therefore, the establishment of cell populations
derived from one cell (i.e. cloning) allows for producing
monoclonal antibodies. The hybridoma method involves the process in
which antibody producing cells are fused with an appropriate cell
line, which is immortalized and then subjected to cloning. The
immortalized antibody producing cells can be cloned by a technique
such as limiting dilution method. It is known that there are lots
of cell lines useful for the hybridoma method. These cell lines are
excellent in the immortalization efficiency of lymphocytic cells
and have various genetic markers which are needed to select the
successfully fused cells. Further, when the production of antibody
producing cells is intended, a cell line lacking the ability to
produce antibodies can also be used.
[0113] For example, mouse myelomas P3x63Ag8.653 (ATCC CRL-1580) and
P3x63Ag8U.1 (ATCCCRL-1597) are widely used as useful cell lines for
the cell fusion method for mice or rats. In general, a hybridoma is
produced by the fusion of homogeneous cells, while a monoclonal
antibody can also be obtained from hetero hybridoma from a
different species among closely related species.
[0114] Specific protocols of the cell fusion have been publicly
known. That is, antibody producing cells of immune animals are
mixed with appropriate fusion partners to perform cell fusion.
Usable examples of the antibody producing cell include splenic
cells, lymphocyte cells collected from the lymph node, and
peripheral blood B cells. As fusion partners, various cell lines
described previously can be used. The polyethylene glycol method
and electric fusion method can be used for cell fusion.
[0115] Next, on the basis of selective markers of fused cells, the
successfully fused cells are selected. For example, when HAT
sensitive cell line is used for cell fusion, the successfully fused
cells are selected by selecting cells growing in HAT medium.
Further, it is confirmed that the antibodies produced by the
selected cells have the desired responsiveness.
[0116] Each hybridoma is screened based on the responsiveness of
antibodies. That is, the hybridoma producing antibodies which bind
to human ILT7 is selected by the method as described previously.
Preferably, when the selected hybridoma is subcloned and then the
production of the desired antibody is finally confirmed, the
confirmed antibody is selected as a hybridoma producing monoclonal
antibody of the present invention.
[0117] Specifically, the desired hybridoma can be selected based on
the responsiveness to human cells or the responsiveness to the
transformed cell which expresses human ILT7 gene. The antibodies,
which bind to cells, can be detected based on the principle of
immunoassay. For example, ELISA, which uses cells as antigens, can
be utilized for detection of the desired antibody. Specifically, a
culture supernatant of hybridoma is made to contact with a support
on which human IPC or the transformed cell used as an immunogen. In
the case where the culture supernatant comprises the desired
antibody, the antibody is trapped in the cell immobilized on the
support. Then, the solid phase is separated from the culture
supernatant, which is washed, if necessary. Thereafter, the
antibody trapped in the solid phase can be detected. An antibody,
which recognizes an antibody, can be used for the detection of
antibodies. For example, an antibody of mouse can be detected by an
anti-mouse immunoglobulin antibody. The detection is easy if the
antibody, which recognizes an antibody, is labeled. Usable examples
of the label include enzymes, fluorescent dyes, luminescent dyes,
and the like.
[0118] On the other hand, particles and an inner wall of a
microtiter plate can be used as the support on which cells are
immobilized. Cells can be immobilized on particles made of plastic
or the surface of a container by physical adsorption. Usable
examples of the support for immobilizing cells include beads made
of polystyrene and reaction vessels.
[0119] In the selection hybridomas, the production of the antibody
against not ILT7 but the host cell of the transformed cell used as
an immunogen may be predicted. For example, as illustrated in
Examples, in the case where a human cell is used as an immunogen
and a mouse is used as an immune animal, the human cell is
recognized as a foreign substance. Thus, the production of an
antibody, which binds to the foreign substance, is predicted. In
the present invention, it is intended to obtain an antibody capable
of recognizing human ILT7. Therefore, it is not necessary to obtain
an antibody which recognizes human cell antigens other than human
ILT7. In order to remove hybridomas, which produce such an antibody
in screening, undesired antibodies, can be absorbed prior to the
confirmation of the antibody responsiveness.
[0120] Undesired antibodies can be absorbed by an antigen to which
an antibody presumed to exist binds. Specifically, for example, an
antibody against human cell antigens other than human ILT7 can be
absorbed by a cell which cannot detect the expression of human
ILT7. In the present invention, it is preferable to use the host
cell used for the immunogen as an antigen for absorbing the
undesired antibodies. Alternatively, a host cell which does not
express the extracellular domain of human ILT7, but expresses
molecule which associates with ILT7 can be used as the antigen for
absorbing the antibodies.
[0121] As for the monoclonal antibody whose binding activity to
antigen is confirmed, its actual effect on the IPC activity is
confirmed, if necessary. The effect on IPC can be confirmed by
methods such as the methods described below.
[0122] As for the monoclonal antibody of the present invention, a
hybridoma producing the monoclonal antibody is cultured and the
monoclonal antibody of the present invention is recovered from the
resulting culture. The hybridoma can be cultured in vitro or in
vivo. In the case of in vitro, the hybridoma can be cultured by
using a known culture medium such as RPMI1640. The immunoglobulin
secreted by the hybridoma is accumulated in the culture
supernatant. Therefore, the monoclonal antibody of the present
invention can be obtained by collecting the culture supernatant and
purifying it, if necessary. It is easier to purify the
immunoglobulin when serum is not added to the culture medium.
However, for the purpose of more rapid proliferation of the
hybridoma and facilitation of antibody production, 10% fetal bovine
serum can also be added to the culture medium.
[0123] The hybridoma can also be cultured in vivo. Specifically,
the intraperitoneal cultivation of the hybridoma can be made by
inoculating the hybridoma into the abdominal cavity of nude mice.
Monoclonal antibodies are accumulated in the ascites. Therefore, if
the ascites is obtained and purified as needed, the required
monoclonal antibody can be produced. The obtained monoclonal
antibodies can be appropriately modified or processed in accordance
with the intended use.
[0124] The monoclonal antibody of the present invention can be
expressed by obtaining cDNA which encodes the antigen binding
region of antibody from the hybridoma and inserting into an
appropriate expression vector. The technique, in which cDNA which
encodes a variable region of antibody is obtained and then it is
expressed in an appropriate host cell, is known. In addition, the
method in which a chimeric antibody is made by ligating a variable
region comprising the antigen binding region into a constant region
is also known.
[0125] Preferable examples of the monoclonal antibody in the
present invention comprise monoclonal antibodies produced by
hybridoma #11 (Accession number: FERM BP-10704), hybridoma #17
(Accession number: FERM BP-10705), or hybridoma #37. Amino acid
sequences which constitute variable regions of these monoclonal
antibodies as well as base sequences of cDNA encoding thereof are
described below. Therefore, for example, chimeric antibodies to be
obtained by conjugating these variable regions to constant regions
of other immunoglobulins are preferable in the present invention.
In amino acid sequences described in the Sequence Listing, the
amino acid sequence from 1 to C terminus constitutes a mature
protein. That is, the consecutive amino acid sequence from 1 to C
terminus for each amino acid sequence is a mature sequence of each
amino acid sequence. On the other hand, the amino acid sequence
represented by a numerical value from N terminus to -1 is a signal
sequence.
TABLE-US-00001 Heavy chain variable region Light chain variable
region #11 SEQ ID NO: 38 SEQ ID NO: 40 (base sequence) (base
sequence) SEQ ID NO: 39 SEQ ID NO: 41 (amino acid sequence) (amino
acid sequence) #17 SEQ ID NO: 42 SEQ ID NO: 44 (base sequence)
(base sequence) SEQ ID NO: 43 SEQ ID NO: 45 (amino acid sequence)
(amino acid sequence) #37 SEQ ID NO: 46 SEQ ID NO: 48 (base
sequence) (base sequence) SEQ ID NO: 47 SEQ ID NO: 49 (amino acid
sequence) (amino acid sequence)
[0126] For example, a mouse (variable region)-human (constant
region) chimeric antibody can be made by ligating these variable
region genes into a human IgG1 heavy chain constant region and a
gene encoding human Ig kappa light chain constant region,
respectively. Amino acid sequences of such a chimeric antibody and
base sequences encoding thereof are respectively described below.
Chimeric antibodies specified by these sequences show the
construction of a preferred embodiment of anti-ILT7 monoclonal
antibody in the present invention. In the following amino acid
sequences of chimeric antibodies, the amino acid sequence from N
terminus to -1 corresponds to the signal sequence and the amino
acid sequence from 1 to C terminus corresponds to the mature
protein. That is, a chimeric antibody comprised of heavy and light
chains, which consist of the amino acid sequence from 1 to C
terminus for each amino acid sequence, is preferable in the present
invention.
TABLE-US-00002 Heavy chain Light chain #11 SEQ ID NO: 50 SEQ ID NO:
52 (base sequence) (base sequence) SEQ ID NO: 51 SEQ ID NO: 53
(amino acid sequence) (amino acid sequence) #17 SEQ ID NO: 54 SEQ
ID NO: 56 (base sequence) (base sequence) SEQ ID NO: 55 SEQ ID NO:
57 (amino acid sequence) (amino acid sequence)
[0127] Further, the antigen-binding activity of monoclonal antibody
can also be grafted to other immunoglobulins. The variable region
of immunoglobulin is comprised of a complementarity-determining
region (CDR) and a frame region. The antigen-binding property of
each immunoglobulin is determined by CDR and the frame maintains
the structure of antigen binding region. The amino acid sequence of
CDR is extremely rich in diversity, while the amino acid sequence
of the portion of the frame is highly conserved. It is known that
the amino acid sequence constituting CDR is incorporated into the
frame region of other immunoglobulin molecules, which allows for
grafting of the antigen-binding activity. The method in which the
antigen-binding property of different immunoglobulins is grafted to
human immunoglobulin by using this process has been established. As
used herein, the term "antigen binding region" can comprise the CDR
which is grafted to the frame. Therefore, the term "fragment
comprising the antigen binding region" of a certain monoclonal
antibody" comprises a fragment of human immunoglobulin comprising
the variable region to which CDR of the monoclonal antibody is
grafted. For example, each of the amino acid sequences of the
above-mentioned variable regions comprises the following amino acid
sequences (SEQ ID NOs) as CDRs.
TABLE-US-00003 CDR1 CDR2 CDR3 #11 heavy SDYAWN YISYSGSTSYNPSLKSR
SPPYYAMDY chain (58) (59) (60) #11 light KASQDVGTAVA WASTRHT
QQYSSYPLT chain (61) (62) (63) #17 heavy SYWIH RIYPGTGSTYYNEKFKG
YPTYDWYFDV chain (64) (65) (66) #17 light RASQSISNYLH YASQSIS
QQSNSWPLT chain (67) (68) (69) #37 heavy SDYAWN YISYSGSTSYNPSLKSR
ALPLPWFAY chain (70) (71) (72) #37 light KASQDVGTAVA WASTRHT
QQYSSYPYT chain (73) (74) (75)
[0128] Based on the information of the base sequence which encodes
the above-mentioned amino acid sequences and the information of the
base sequence which encodes the frame (FR) of human immunoglobulin,
a primer can be designed and cDNA having a base sequence obtained
by conjugating both of the base sequences can be amplified. The
operation is repeated each frame and a variable region in which
CDR1, CDR2, and CDR3 of mice are connected by human FR can be
constructed. Further, the base sequence, which encodes a constant
region of human immunoglobulin, is conjugated as needed, a
humanized antibody with the constant region can be obtained.
[0129] As the chimeric antibody comprising the above-mentioned
variable regions or a humanized antibody to which CDR constituting
a variable region is grafted, an antibody with a constant region
derived from IgG or IgM is comprised in a preferable antibody in
the present invention. The present inventors confirmed that the
monoclonal antibody against ILT7 showed CDC action on ILT7
expressing cells. Therefore, the antibody having a constant region
derived from IgG or IgM exhibits cytotoxicity against ILT7
expressing cells due to CDC effect. Such antibodies are useful in
inhibiting the number of ILT7 expressing cells such as IPCs.
[0130] The chimeric antibody capable of recognizing ILT7 or
humanized antibody, which is provided by the present invention, can
be produced by genetic engineering using polynucleotides encoding
these antibodies. For example, a polynucleotide which is the base
sequence described in the following SEQ ID NOs and encodes the
amino acid sequence constituting a mature protein for each amino
acid sequence can be used as a polynucleotide encoding the variable
region #11 or #17. The consecutive amino acid sequence from 1 to C
terminus for each amino acid sequence corresponds to a mature
protein. In the case where each mature protein is expressed as a
separate protein, it is preferable to place the secretion signal at
the N terminus of each amino acid sequence. For example, in the
amino acid sequences shown in these SEQ ID NOs, the amino acid
sequence from N terminus to -1 can be used as a signal sequence
when such proteins are expressed in animal cells. Alternatively,
these variable regions can be secreted as mature proteins by using
an arbitrary signal sequence which enables the secretion of
immunoglobulin.
TABLE-US-00004 #11 SEQ ID NO: 50 (base sequence) SEQ ID NO: 52
(base sequence) #17 SEQ ID NO: 54 (base sequence) SEQ ID NO: 56
(base sequence)
[0131] In the same manner as described above, as for the
polynucleotide encoding the humanized antibody, a polynucleotide
which expresses the humanized antibody can be made by using the
base sequence which encodes a protein having the signal sequence to
be added to the N terminus. When heavy and light chains are carried
on separate vectors, both vectors are co-transfected into the same
host cell. The heavy and light chains expressed from each vector
are used to construct an immunoglobulin molecule with both chains.
Or, a polynucleotide encoding a heavy chain and a polynucleotide
encoding a light chain can also be carried on the same vector. The
host cell into which a vector carrying both polynucleotides is
co-transfected expresses heavy and light chains and produces an
immunoglobulin having both chains.
[0132] These polynucleotides can be expressed as antibodies using a
host-vector system capable of expressing an antibody gene.
Furthermore, in the case where they are expressed as a single
protein molecule by connecting a heavy chain variable region with a
light chain variable region, a signal sequence can be placed at the
N terminus of the protein molecule. A known example of such an
antibody molecule includes scFv molecule in which a heavy chain
variable region and a light chain variable region are connected by
a linker.
[0133] Each of the monoclonal antibodies thus produced is comprised
in the monoclonal antibody of the present invention. In other
words, a monoclonal antibody which consists of an immunoglobulin
comprising the antigen binding region encoded by a polynucleotide
derived from cDNA encoding the antigen binding region of the
above-mentioned monoclonal antibodies is comprised in the
monoclonal antibody in the present invention.
[0134] As described previously, RBL cells in which ILT1 gene was
forced to be expressed could be used as an immunogen for obtaining
ILT1 antibodies. However, the expression of ILT7 on the surface of
RBL cells (P815) could not be confirmed and thus it could not be
used as the immunogen. The present inventors found out that the
expression of human ILT7 on the cell surface could be induced by
the coexpression of human ILT7 and other cell membrane proteins
which associate with human ILT7. Then, the present inventors found
that the antibody, binds to human IPCs, can be obtained by using
the transformed cell whose expression is thus induced as an
immunogen and completed the present invention.
[0135] That is, the present invention provides the immunogen for
producing the antibody which binds to the extracellular domain of
human ILT7, and comprises animal cells in which (a) a
polynucleotide which encodes the amino acid sequence comprising the
extracellular domain of human ILT7; and (b) a polynucleotide which
encodes Fc receptor .gamma.-chain are maintained so as to be
exogenously expressed or cell membrane fractions thereof.
[0136] Six years or more have already passed since the structure of
human ILT7 was found in 1998. However, the antibody capable of
specifically recognizing ILT7 has still not been obtained. The
antibody capable of recognizing human ILT7 was provided by using
the immunogen of the present invention for the first time. That is,
the present invention provided the antibody capable of recognizing
human ILT7 which can be obtained by the following steps of:
[0137] (1) administering a cell which exogenously expresses a
protein comprising extracellular domain of human ILT7 and a
molecule which is associated with human ILT7 to immune animals;
[0138] (2) selecting an antibody producing cell which produces the
antibody which binds to human ILT7 from antibody producing cells of
the immune animals; and
[0139] (3) culturing the antibody producing cells selected by step
(2) and recovering an antibody capable of recognizing human ILT7
from the cultures.
[0140] It is found that human ILT7 is specifically expressed in
human IPC. In the analysis of gene expression by SAGE which was
performed by the present inventors, the specific expression of
human ILT7 in human IPC was also confirmed. However, in the past
reports, the expression levels of ILT7 of both cases were analyzed
based on mRNA. Since the antibody capable of detecting human ILT7
was not provided, the expression state of protein was not analyzed
conventionally. The analysis of human ILT7 protein was realized by
the provision of the antibody which binds to the extracellular
domain of human ILT7 in the present invention.
[0141] The present inventors actually confirmed that the monoclonal
antibody which binds to the extracellular domain of human ILT7
based on the present invention specifically detected human IPCs.
That is, the present invention relates to a method for detecting
interferon producing cells which comprise the steps of: contacting
a monoclonal antibody which binds to the extracellular domain of
human ILT7 or a fragment comprising the antigen binding region with
a test cell; and detecting the monoclonal antibody which is bound
to cells or a fragment comprising its antigen binding region.
[0142] The detection of human ILT7 based on the present invention
allows for determining whether a certain cell is IPC. That is, the
present invention provides a method for identifying IPCs using
human ILT7 as an indicator. Or, human IPCs can be separated by
separating the cells in which human ILT7 was detected based on the
present invention. That is, the present invention provides a method
for separating IPCs using human ILT7 as an indicator.
[0143] Based on the analysis by human ILT7 antibody, it was
confirmed that the expression level of ILT7 in IPCs whose
differentiation was induced by CpG, and the like was reduced. That
is, the IPCs before their differentiation is induced can be
specifically detected by using ILT7 as an indicator. In other
words, the monoclonal antibody of the present invention is useful,
particularly in detecting IPCs before their differentiation into
dendritic cells. As used herein, the term "IPCs before their
differentiation" can be defined as cell populations which maintain
the capacity to produce interferon.
[0144] In the present invention, the monoclonal antibody which
binds to the extracellular domain of human ILT7 or the fragment
comprising its antigen binding region can be labeled in advance.
For example, antibodies can be easily detected by labeling with
luminescent dyes or fluorescent dyes. More specifically, the
fluorescent-dye labeled antibody is made to contact with a cell
population which may comprise IPCs and then cells to which the
antibody of the present invention bound can be detected by using
the fluorescent dye as an indicator. Further, IPCs can be separated
by separating the cells in which the fluorescent dye is detected. A
series of the steps can be easily performed based on the principle
of FACS.
[0145] Alternatively, the antibody of the present invention can be
bound to a solid phase support such as magnetic particles in
advance. The antibody bound to the solid phase support recognizes
human ILT7 and then IPCs are trapped in the solid phase support. As
a result, IPCs can be detected or separated.
[0146] The antibody necessary for the method for detecting IPCs
based on the present invention can be provided as a reagent for
detecting IPCs. That is, the present invention provides a reagent
for detecting interferon producing cells, comprising the monoclonal
antibody which binds to the extracellular domain of human ILT7 or
the fragment comprising its antigen binding region. The reagent for
detecting IPCs of the present invention can be used in combination
with a positive control or a negative control in addition to
antibodies. For example, the transformed cells which express the
extracellular domain of human ILT7 and are used for the immunogen
as well as the IPCs obtained from human can be used as the positive
controls. Usually, only a few human IPCs can be obtained from the
peripheral blood. Therefore, it is preferable to use, particularly
a transformed cell as the positive control in the reagent of the
present invention. On the other hand, an arbitrary cell, which does
not express human ILT7, can be used as the negative control.
[0147] That is, the present invention provides a kit for detecting
human IPCs which comprises:
[0148] (a) the monoclonal antibody which binds to the extracellular
domain of human ILT7 or the fragment comprising its antigen binding
region; and
[0149] (b) the cell which expresses an exogenous protein comprising
extracellular domain of human ILT7 and an exogenous molecule which
is associated with human ILT7.
[0150] The present inventors analyzed the effect of the antibody
which binds to the extracellular domain of human ILT7 on IPCs. As a
result, it is confirmed that the antibody, which binds to the
extracellular domain of human ILT7, inhibits the activity of IPCs.
That is, the present invention relates to a method for inhibiting
the activity of interferon producing cells, comprising a step of
contacting any of the following components with interferon
producing cells:
[0151] (a) a monoclonal antibody which binds to human ILT7 and
inhibits the activity of interferon producing cells or a fragment
comprising its antigen binding region; and
[0152] (b) an immunoglobulin to which a complementarity-determining
region of the monoclonal antibody described in (a) is grafted or a
fragment comprising its antigen binding region.
[0153] Or, the present invention relates to a method for inhibiting
the activity of interferon producing cells in living organisms,
comprising a step of administering any of the following components
to the living organisms:
[0154] (a) themonoclonal antibody which binds to human ILT7 and
inhibits the activity of interferon producing cells or a fragment
comprising its antigen binding region;
[0155] (b) a fragment comprising the immunoglobulin to which a
complementarity-determining region of the monoclonal antibody
described in (a) is grafted or a fragment comprising its antigen
binding region; and
[0156] (c) a polynucleotide which encodes the components described
in (a) or (b).
[0157] As used herein, the term "Interferon Producing cells (IPCs)"
means cells which have the ability to produce IFN and express ILT7
on the cell surface. Hereinafter, unless otherwise noted, the term
"IPCs" encompasses net only cells which are precursor cells of
dendritic cells but also the cells which have the ability to
produce IFN and express ILT7 on the cell surface. Methods for
identifying such IPCs are commonly known. IPCs can be distinguished
from other blood cells using some cell surface markers as
indicators. Specifically, a profile of cell surface markers of
human IPCs is described below (Shortman, K. and Liu, Y J. Nature
Reviews 2: 151-161, 2002). In recent years, a certain report has
also suggested that BDCA-2 positive cell is defined as IPC
(Dzionek, A. et al. J. Immunol. 165: 6037-6046, 2000.).
[Profile of Cell Surface Antigens of Human IPCs]
[0158] CD4 positive, CD123 positive,
Lineage (CD3, CD14, CD16, CD19, CD20, CD56) Negative, and CD11c
Negative
[0159] Therefore, it can also be said that IPCs are cells which
have the expression profile of these known markers and have the
ability to produce IFN. Further, cells in living organisms with the
ability to produce IFN are comprised in IPCs, even if the cells are
a cell population with profiles different from the expression
pattern of the expression profile of these markers. Further,
examples of the characteristics, which are commonly seen in human
IPCs, are as follows:
[Morphological Characteristic of Cells]
[0160] Similar to plasma cells [0161] Round cells with a smooth
cell surface [0162] The nucleus is relatively large
[Functional Characteristic of Cells]
[0162] [0163] During virus infection, a large amount of Type-1
interferons are produced in a short period of time.
[0164] Differentiated into dendritic cells after virus
infection.
[0165] As used herein, the term "inhibition of the activity of
IPCs" means the inhibition of at least one of the functions of
IPCs. Examples of the function of IPCs include the production of
IFN and the cell survival. The cell survival can also be translated
into the number of cells. Therefore, in the case of inhibiting both
or either of these functions, it is said that the activity of IPCs
is inhibited. It is found that type 1 IFN produced by IPCs leads to
various diseases. Therefore, the inhibition of the number of IPCs
and IFN production is useful for a medical treatment strategy of
those diseases.
[0166] For example, the relationship between the pathological
condition of autoimmune diseases and IFN.alpha. has been pointed
out. Most of the IFN.alpha. is produced by IPCs. Therefore,
pathological conditions caused by IFN.alpha. can be alleviated by
inhibiting the production of IFN.alpha.. As used herein, the term
"inhibition of IFN production by IPCs" means the inhibition of the
production of at least one of the IFN produced by IPCs. Preferable
IFN in the present invention is the type 1 IFN. Among them,
IFN.alpha. is important.
[0167] That is, the present invention relates to an inhibitor of
the production of IFN which comprises an antibody which binds to
the extracellular domain of ILT7 as an active ingredient. Or, the
present invention provides a method for inhibiting the production
of IFN comprising a step of administering the antibody which binds
to the extracellular domain of ILT7. Further, the present invention
relates to the use of the antibody which binds to the extracellular
domain of ILT7 in the production of a medicinal composition for
inhibiting the production of IFN.
[0168] Cells in which a large amount of IFN is produced by a small
number of cells are included in IPCs. For example, precursor cells
of dendritic cells stimulated by viruses and the like produce most
of the IFN produced by the living body. The inhibition of the
number of IPCs which produce a lot of IFN results in suppressing
the IFN production. Therefore, pathological conditions caused by
IFN.alpha. can be reduced by inhibiting the number of IPCs. It was
confirmed that anti-ILT7 monoclonal antibody bound to ILT7
expressing cells and then the effect of cytotoxicity was given by
Complement Dependent Cytotoxicity (CDC) in a preferable embodiment
of the present invention. CDC effect is one of the important
mechanisms of antibody drug. The anti-ILT7 monoclonal antibody of
the present invention also has potent cytotoxicity against ILT7
expressing cells such as IPCs due to CDC effect thereof. That is,
as for the anti-ILT7 monoclonal antibody, the IFN production
inhibiting effect can be expected by cytotoxicity against IPCs, in
addition to the inhibition mechanism of IFN production in a
preferable embodiment.
[0169] The antibody, which recognizes the extracellular domain of
human ILT7 to be used for the present invention, can be obtained
based on the method described previously. The antibody in the
present invention may be of any class. Organism species from which
the antibody is derived are not limited, either. Further, a
fragment comprising the antigen binding region of antibody can be
used as an antibody. For example, an antibody fragment comprising
the antigen binding region which is obtained by enzymatic digestion
of IgG can be used as the antibody in the present invention.
Specifically, antibody fragments such as Fab and F(ab').sub.2 can
be obtained by digestion with papain or pepsin. It is well known
that these antibody fragments can be used as antibody molecules
which have affinity for antibodies. Alternatively, antibodies
constructed by genetic recombination can also be used as long as
satisfactory antigen-binding activity is maintained. Examples of
the antibodies constructed by genetic recombination include
chimeric antibodies, CDR-transplanted antibodies, single chain Fvs,
diabodies, linear antibodies, and polyspecific antibodies formed of
antibody fragments. It is common knowledge that these antibodies
can be given by using monoclonal antibodies.
[0170] In the present invention, antibodies can be modified, if
necessary. According to the present invention, the antibody, which
recognizes the extracellular domain of human ILT7, has an
inhibiting effect on the activity of IPCs. That is, it is
contemplated that the antibody itself has cytotoxicity against
IPCs. Subclasses of antibodies which exhibit potent effector
activity are known. Alternatively, the inhibiting effect on the IPC
activity can be further enhanced by modifying antibodies with a
cytotoxic agent. Examples of the cytotoxic agent are described
below.
Toxins: Pseudomonas Endotoxin (PE), diphtheria toxin, ricin
Radioisotopes: Tc.sup.99m, Sr.sup.89, I.sup.131, Y.sup.90
[0171] Anticancer agents: calicheamicin, mitomycin, paclitaxel
[0172] Toxins consisting of proteins can be conjugated to
antibodies or their fragments with a bifunctional reagent.
Alternatively, a gene encoding toxin is connected to a gene
encoding antibody and fusion proteins of genes can also be
obtained. The method for conjugating antibodies with radioisotopes
is also known. For example, the method for labeling antibodies with
radioisotopes using a chelating agent is known. Furthermore, the
anticancer agents can be conjugated to antibodies using sugar
chains or the bifunctional reagent.
[0173] The present inventors have confirmed a phenomenon in which a
monoclonal antibody which is bound to ILT7 expressed on a cell
membrane is incorporated into cells after binding
(internalization). Therefore, the cytotoxic agents can be delivered
into cells by contacting antibodies conjugated with these cytotoxic
agents of the present invention with ILT7 expressing cells. That
is, the present invention provides an active inhibitor of ILT7
expressing cells which comprises anti-ILT7 monoclonal antibody to
which the cytotoxic agent is conjugated as an active ingredient.
Or, the present invention relates to the use of anti-ILT7
monoclonal antibody to which the cytotoxic agent is conjugated in
the production of the active inhibitor of ILT7 expressing cells.
Further, the present invention provides a method for inhibiting the
activity of ILT7 expressing cells comprising a step of
administering anti-ILT7 monoclonal antibody to which the cytotoxic
agent is conjugated.
[0174] In the present invention, an antibody whose structure is
artificially modified can also be used as an active ingredient. For
example, various modification methods are known in order to improve
the cytotoxicity and stability of antibodies. Specifically, an
immunoglobulin in which sugar chains of heavy chains are modified
is known (Shinkawa, T. et al. J. Biol. Chem. 278:3466-3473. 2003.).
Antibody Dependent Cell-mediated Cytotoxicity (ADCC) activity of
immunoglobulin was enhanced by the modification of sugar chains.
Or, an immunoglobulin in which the amino acid sequence of Fc region
is modified is also known. That is, ADCC activity was enhanced by
artificially increasing the binding activity of immunoglobulin to
Fc receptor (Shield, R L. et al. J. Biol. Chem. 276; 6591-6604,
2001.).
[0175] IgG, which is bound to Fc receptor, is incorporated in cells
once. Then, IgG binds to Fc receptor which is expressed in endosome
and it is released into blood again. This phenomenon has been
revealed. IgG with a high binding activity with Fc receptor has a
better chance of being released into blood again after its
incorporation into cells. As a result, the retention time of IgG in
blood is extended (Hinton, P R. et al. J Biol. Chem. 279:
6213-6216. 2004). In addition to this, it is said that modification
of amino acid sequence of Fc region causes a change of complement
dependent cytotoxicity (CDC) activity. These modified antibodies
can be used as the antibody in the present invention.
[0176] When the antibody, which binds to the extracellular domain
of human ILT7, is contacted to IPCs, the activity of IPCs is
inhibited. Therefore, these antibodies can be used for an inhibitor
or method for inhibiting the activity of IPCs. That is, the present
invention provides an active inhibitor of IPCs which comprises at
least one component selected from the group consisting of the
following (a) to (c) as an active ingredient. Or, the present
invention relates to a method for inhibiting the activity of IPCs
comprising a step of administering at least one component selected
from the group consisting of the following (a) to (c). Further, the
present invention relates to the use of at least one component
selected from the group consisting of the following (a) to (c) in
the production of active inhibitor of IPCs:
[0177] (a) the monoclonal antibody which binds to human ILT7 or a
fragment comprising its antigen binding region;
[0178] (b) the immunoglobulin to which a
complementarity-determining region of the antibody described in (a)
is grafted or a fragment comprising its antigen binding region;
and
[0179] (c) a polynucleotide which encodes components described in
(a) or (b).
[0180] In the present invention, the monoclonal antibody, which
recognizes the extracellular domain of human ILT7, can be used as
the monoclonal antibody which inhibits the activity of IPCs. In the
present invention, one or more monoclonal antibodies can be used.
For example, one or more monoclonal antibodies, which recognize the
extracellular domain of human ILT7, are blended to use in the
present invention.
[0181] It can be confirmed that antibodies have an inhibiting
effect on IFN production by IPCs in the manner as described below.
IPCs produce a large amount of IFN due to virus stimulation.
Antibodies are given to IPCs before, after, or at the same time as
the stimulation of IPCs with viruses. The capacity to produce IFN
each for the resulting IPCs is compared to that of each control to
which antibodies are not given. The ability to produce IFN can be
evaluated by measuring IFN.alpha. or IFN.beta. contained in culture
supernatant of IPCs. As a result of the comparison, it can be
confirmed that the tested antibodies are effective in inhibiting
the ability to produce IFN when the amount of IFN in the
supernatant is significantly decreased by the addition of
antibodies. These methods for measuring IFN are known. IPCs produce
most of the IFN in the living body. Therefore, IFN producing state
in the living body can be regulated by inhibiting the ability to
produce IFN of IPCs.
[0182] In the present invention, the activity of IPCs encompasses
the maintenance of the number of IPCs. Therefore, the inhibition of
the activity of IPCs in the present invention comprises the
inhibition of the number of IPCs. When it is confirmed that the
number of IPCs is inhibited under the presence of antibodies, it
can be found that the antibodies are inhibiting the activity of
IPCs. As with IFN production, an inert immunoglobulin derived from
the same animal species as the antibody whose activity should be
confirmed can be used as a comparative control. The number of IPCs
can be quantitatively compared by counting cells. The number of
cells can be counted with FACS or a microscope.
[0183] Further, it is said that IPCs are differentiated into cells
which induce Th2 referred to as dendritic cell 2 (DC2) as a result
of infection with virus or the like. If IFN production of IPCs by
virus stimulation can be inhibited, their differentiation into Th2
may also be inhibited. Therefore, it can be expected that the
monoclonal antibody of the present invention, which inhibits IFN
production, may also have a therapeutic effect on various allergic
diseases.
[0184] When the antibody, which recognizes the extracellular domain
of human ILT7, is administered to a host different from organism
species from which the antibody is derived, it is desirable to
process the antibody into a shape which is hard to be recognized as
a foreign substance by the host. For example, immunoglobulin cannot
be easily recognized as the foreign substance by processing the
antibody into the following molecules. The technique for processing
immunoglobulin molecules as described below is known. Fragment
comprising the antigen binding region which lacks a constant region
(Monoclonal Antibodies: Principles and Practice, third edition,
Academic Press Limited. 1995; Antibody Engineering, A Practical
Approach, IRL PRESS, 1996) [0185] Chimeric antibody composed of the
antigen binding region of monoclonal antibody and the constant
region of immunoglobulin of the host ("Gene Expression Experiment
Manual", Isao Ishida, Tamie Ando, eds., Kodansha, 1994) [0186]
CDR-substituted antibody in which complementarity-determining
region (CDR) of immunoglobulin of the host is substituted to CDR of
monoclonal antibody ("Gene Expression Experiment Manual", Isao
Ishida, Tamie Ando, eds., Kodansha, 1994)
[0187] Alternatively, a human antibody can be obtained by using
non-human animals into which a human antibody gene is incorporated
as immune animals, while the non-human animals are used. For
example, transgenic mice with human antibody genes have been put to
practical use in order to produce human antibodies as immune
animals (Ishida et al., Cloning and Stem Cells, 4:85-95, 2002). The
use of such animals allows for obtaining the human antibody which
recognizes ILT7 using immunogens as described previously. It is
preferable to administer human antibody to humans.
[0188] Alternatively, a human immunoglobulin variable region gene
can also be obtained by a phage display method (McCafferty J. et
al., Nature 348:552-554, 1990; Kretzschmar T et. al., Curr Opin
Biotechnol. 2002 December; 13(6): 598-602.). In the phage display
method, a gene encoding human immunoglobulin variable region is
incorporated into a phage gene. A phage library can also be
produced by using various immunoglobulin genes as sauces. A phage
expresses a variable region as a fusion protein of the protein
composed of the phage. The variable region expressed by the phage
on the phage surface maintains the binding activity with an
antigen. Therefore, phages, which bind to antigens or cells in
which antigens are expressed, are selected, thereby allowing for
screening a phage in which a variable region having the desired
binding activity is expressed from the phage library. Further, a
gene encoding a variable region, which has the desired binding
activity, is retained in the phage particles thus selected. That
is, in the phage display method, a gene encoding a variable region
with the desired binding activity can be obtained by using the
binding activity of the variable region as an indicator.
[0189] In the active inhibitor of IPCs or the method for inhibiting
the activity of IPCs in the present invention, the antibody which
recognizes the extracellular domain of human ILT7 or the antibody
fragment which comprises at least the antigen binding region of the
antibody can be administered as a protein or a polynucleotide
encoding the protein. In administration of polynucleotides, it is
desirable to use a vector in which a polynucleotide encoding the
desired protein is placed under the control of an appropriate
promoter so as to express the desired protein. An enhancer and a
terminator can also be placed in the vector. A vector which carries
a gene of heavy and light chains which constitutes an
immunoglobulin and is able to express an immunoglobulin molecule is
known.
[0190] The vector capable of expressing the immunoglobulin can be
administered by introducing into cells. In the administration to
living organisms, a vector, which can be infected with cells by
administering to the living organisms, can be administered
directly. Once lymphocytes are separated from the living organisms,
then the vector is introduced into the lymphocytes, which can be
returned to the living organisms again (ex vivo).
[0191] In the active inhibitor of IPCs or the method for inhibiting
the activity of IPCs based on the present invention, as for the
amount of monoclonal antibody to be administered to the living
organisms, immunoglobulin is administered usually in the range of
0.5 mg to 100 mg, for example, 1 mg to 50 mg, preferably 2 mg to 10
mg per kg of body weight. Intervals of administration of the
antibody to living organisms can be properly adjusted so as to
maintain an effective concentration of immunoglobulin in the living
organisms during the period of treatment. Specifically, for
example, the antibody can be administered at intervals of 1 to 2
weeks. The administration route is optional. Those skilled in the
art can properly select an effective administration route in
treatments. Specific examples thereof include oral or parenteral
administration. Antibodies are administered systemically or
topically for example, by intravenous injection, intramuscular
injection, intraperitoneal injection, subcutaneous injection, or
the like. Examples of an appropriate formulation for parenteral
administration in the present invention include injectable
solutions, suppositories, and sprays. When the antibody is given to
cells, immunoglobulin is added to culture medium usually in the
range of 1 .mu.g/ML, preferably 10 .mu.g/ML, more preferably 50
.mu.g/ML, further preferably 0.5 mg/ML.
[0192] In the active inhibitor of IPCs or method for inhibiting the
activity of IPCs of the present invention, the monoclonal antibody
can be administered to living organisms by optional methods.
Usually, the monoclonal antibody is blended with a pharmaceutically
acceptable support. If necessary, the monoclonal antibody can be
blended with additive agents such as thickeners, stabilizers,
preservatives, and solubilizers. Examples of such a support or
additive agent include lactose, citric acid, stearic acid,
magnesium stearate, sucrose, starch, talc, gelatin, agar, vegetable
oil, and ethylene glycol. The term "pharmaceutically acceptable"
means approved by a regulatory agency in each government or listed
in the Pharmacopeia in each country or other generally recognized
pharmacopeia for use in animals, in mammalians, and more
particularly, in humans. The active inhibitor of IPCs of the
present invention can also be provided in the form of single or
multiple doses of lyophilized powders or tablets. Further, the
lyophilized powders or tablets can be used in combination with
sterilized water for injection, physiological salt solution or
buffer solution for dissolving the compositions so as to be a
desired concentration before administration.
[0193] Further, when the monoclonal antibody is administered as a
vector, which expresses immunoglobulin, heavy and light chains are
co-transfected to another plasmid and each plasmid can be
administered in the range of 0.1 to 10 mg, for example, 1 to 5 mg
per kg of body weight. In order to introduce the plasmids into
cells in vitro, the content of the vectors for use is 1 to 5
pg/10.sup.6 cells. Herein below, the present invention will be
specifically described with reference to Examples.
[0194] All prior art documents cited herein are incorporated by
reference in their entirety.
EXAMPLES
Example 1
A. Analysis of Expression of ILT7
A-1) Analysis Using SAGE Library
[0195] The expression of genes in human monocytes, IPCs, and
HSV-treated IPCs was compared and analyzed by Serial Analysis of
Gene Expression (Trade name; SAGE) method. The analysis method is
as follows. Monocytes were separated as BDCA-4 positive cells and
IPCs were separated as CD14 positive cells from human peripheral
blood using a cell sorter. Further, IPCs were cultured for 12 hours
under the presence of Herpes Simplex Virus (HSV) and then the
differentiated IPCs were prepared. RNAs were obtained from
respective cells, followed by producing a SAGE library using I-SAGE
(Trade name) kit (manufactured by Invitrogen). Data on the obtained
base sequences of about 100,000 tags was analyzed using SAGE
Analysis Software (manufactured by Invitrogen). As a result, a gene
whose score value of monocyte/IPC/IPC+HSV is 0/16/0, namely, ILT7
(Gen Bank Acc#NM.sub.--012276) known as a gene, which shows IPC
specific expression, was found. ILT7 is a membrane protein with
immunoglobulin-like domains encoded by abase sequence shown in SEQ
ID NO: 1 (FIG. 2 (a)). It has been reported that mRNA of ILT7 is
expressed in IPCs (Blood 100, 3295-3303 (2002))
A-2) RT-PCR
[0196] The expression of ILT7 in hemocyte cells was examined in
more detail. Each cell was preparatively isolated from human
peripheral blood by the cell sorter. RNAs were extracted from each
of the isolated cell populations, from which cDNA was synthesized.
Quantitative PCR was performed in accordance with an ordinary
method using the resulting cDNA as a template and the expression
level of mRNA of ILT7 was analyzed. The used conditions for the
base sequences of primers and PCR are as follows:
TABLE-US-00005 Forward primer: (SEQ ID NO: 3) 5' CTC CAA CCC CTA
CCT GCT GTC 3' Reverse primer: (SEQ ID NO: 4) 5' TTC CCA AGG CTC
CAC CAC TCT 3'
1 cycle of PCR (at 94.degree. C. for 3 minutes) 25 cycles of PCR
[at 94.degree. C. for 30 seconds, at 58.degree. C. for 30 seconds,
and at 72.degree. C. for 1 minute] 1 cycle of PCR (at 72.degree. C.
for 6 minutes)
[0197] When IPCs stimulated by monocytes, IPCs, HSVs, and CD19
positive cells (i.e. B cells), CD3 positive cells (i.e. T cells), T
cells stimulated by PMAs, and CD56 positive cells (i.e. NK cells)
were examined, it was found that ILT7 was expressed specifically in
IPCs (FIG. 1 (a)).
A-3) Quantitative RT-PCR
[0198] Further, the expression in other organs and tissues was
examined by quantitative PCR using ABI PRISM 7000 (manufactured by
Applied Biosystem). As cDNA panel, BD (Trade name) MTC multiple
tissue cDNA panel (Human I; Cat. No. 636742, Human immune; Cat. No.
636748, Human blood fractions; Cat. No. 636750; all of them are
manufactured by Becton Dickinson) and the same cDNA derived from
hemocyte cells as described in 2) were used.
[0199] The used base sequences of primers are as follows:
TABLE-US-00006 Forward primer for ILT7: (SEQ ID NO: 5) 5' CCT CAA
TCC AGC ACA AAA GAA GT 3' Reverse primer for ILT7: (SEQ ID NO: 6)
5' CGG ATG AGA TTC TCC ACT GTG TAA 3' Forward primer for GAPDH:
(SEQ ID NO: 7) 5' CCA CCC ATG GCA AAT TCC 3' Reverse primer for
GAPDH: (SEQ ID NO: 8) 5' TGG GAT TTC CAT TGA TGA CAA G 3'
[0200] PCR was performed by using ABI PRISM 7000 (manufactured by
Applied Biosystem) and SYBR green PCR master mix kit (manufactured
by the same company). Sequence Detection System Software
(manufactured by the same company) was used for analysis.
[0201] The reaction conditions are as follows:
Step 1: 1 cycle of PCR (at 50.degree. C. for 2 minutes) Step 2: 1
cycle of PCR (at 95.degree. C. for 10 minutes) Step 3: 40 cycles of
PCR (at 95.degree. C. for 15 seconds, at 60.degree. C. for 1
minute)
[0202] The expression of ILT7 gene was compared between each tissue
by standardizing at the level of expression of the
glyceraldehyde-3-phosphate dehydrogenase (GAPDH) gene, which is
known to be expressed constitutively. As a result, it was observed
that ILT7 was not expressed in any organs other than lymphoid
tissues and expressed specifically in IPCs.
B. Production of ILT7 and FcR.gamma. Expression Vectors
[0203] Subsequently, cloning of genes and production of expression
vectors were carried out in order to express ILT7 proteins.
B-1) Cloning of ILT7 Genes
[0204] Poly (A) .sup.+RNA separated from human peripheral blood was
extracted from IPCs, from which cDNA was synthesized using oligo dT
primer and Super Script Choice System for cDNA Synthesis kit. An
EcoRI adapter was ligated into the synthesized cDNA, which was
ligated into pME18S vector cleaved by EcoRI, resulting in
production of human IPC cDNA library. ILT7 gene was amplified by
PCR method using the produced cDNA library as a template as well as
using primers with the following base sequences. 1 unit of KOD Plus
DNA polymerase (manufactured by TOYOBO CO., LTD.) was used for PCR
reaction. Reaction conditions were set to 25 cycles of PCR [at
94.degree. C. for 15 seconds, at 55.degree. C. for 30 seconds, and
at 68.degree. C. for 2 minutes] after 1 cycle of PCR at 94.degree.
C. for 2 minutes.
TABLE-US-00007 Forward primer: (SEQ ID NO: 9) 5' CAG GGC CAG GAG
GAG GAG ATG 3' Reverse primer: (SEQ ID NO: 10) 5' TCA GCA GAC ACT
TCC CCA ACT 3'
[0205] 2-kb ILT7cDNA fragment amplified was separated and recovered
by electrophoresis using 1% agarose gel, which was cloned to pCR4
Blunt-TOPO plasmid vector (manufactured by Invitrogen) using Zero
Blunt TOPO PCR Cloning kit (manufactured by Invitrogen). The base
sequences of the genes obtained was analyzed, and it was found that
the desired ILT7 gene shown in SEQ ID NO: 1 was obtained.
B-2) Production of FLAG-Tagged ILT7 Expression Vectors
[0206] A plasmid expressing a protein in which FLAG tags were fused
to N- and C-termini of ILT7, respectively was constructed. ILT7 was
fused with a tag, which allowed for confirming the expression of
ILT7 protein by detection of the tag. The desired sequence was
amplified by PCR method using the ILT7 gene produced as described
in 1) as a template as well as using primers with the following
base sequences. 1 unit of KOD Plus DNA polymerase (manufactured by
TOYOBO CO., LTD.) was used for PCR reaction. Reaction conditions
were set to 25 cycles of PCR [at 94.degree. C. for 15 seconds, at
55.degree. C. for 30 seconds, and at 68.degree. C. for 2 minutes]
after 1 cycle of PCR at 94.degree. C. for 2 minutes.
TABLE-US-00008 For N-FLAG ILT7 Forward primer (SEQ ID NO: 11): 5'
CCG ctc gag ATG ACC CTC ATT CTC ACA AGC CTG CTC TTC TTT GGG CTG AGC
CTG GGC [GAT TAC AAG GAT GAC GAC GAT AAG] CCC AGG ACC CGG GTG CAG
GCA GAA 3' Reverse primer (SEQ ID NO: 12): 5' C TAG act agt TCA GAT
CTG TTC CCA AGG CTC 3' For C-FLAGILT7 Forward primer (SEQ ID NO:
13): 5' CCG ctc gag ATG ACC CTC ATT CTC ACA AGC 3' Reverse primer
(SEQ ID NO: 14): 5' C TAG act agt TCA [CTT ATC GTC GTC ATC CTT GTA
ATC] GAT CTG TTC CCA AGG CTC 3'
[0207] In the above-mentioned base sequences, each underlined
portion in parentheses shows a base sequence encoding the attached
FLAG tag and each lowercase letter shows the cleavage site for the
restriction enzyme XhoI or SpeI. DNA fragments amplified by PCR
were cleaved by XhoI and SpeI, which were then separated by Gel
electrophoresis. 2 kb DNA fragments were recovered, which were
ligated into pME18X vector cleaved by XhoI and SpeI in the same
manner as descried above. Then, two types of plasmids capable of
expressing the desired fusion protein, i.e. pME18X-N-FLAG ILT7 and
pME18 X-C-FLAG ILT7 were constructed, respectively.
B-3) Cloning of FcR.gamma. Genes
[0208] FcR.gamma. protein was considered as a protein capable of
associating with ILT7 protein. The present molecule is a gene with
base sequences and amino acid sequences of SEQ ID NO: s 15 and 16
(Genbank Acc#NM.sub.--004106, J. Biol. Chem. 265, 6448-6452
(1990)). The molecule is a molecule (.gamma. chain) which
constitutes Fc.epsilon.RI, i.e. a high affinity IgE receptor.
Although it is also named as Fc.epsilon.RI.gamma., it will be
referred to as FcR.gamma. hereinafter. In this regard, the present
molecule has also been known as a component of Fc.gamma.R or
Fc.alpha.R. The present gene was cloned by OCR method as shown
below to produce expression vectors. FcR.gamma. gene was amplified
by PCR method using the human IPC cDNA library produced as
described in 1) as a template as well as using primers with the
following base sequences. 1 unit of KOD Plus DNA polymerase
(manufactured by TOYOBO CO., LTD.) was used for PCR reaction.
Reaction conditions were set to 25 cycles of PCR [at 94.degree. C.
for 15 seconds, at 55.degree. C. for 30 seconds, and at 68.degree.
C. for 1 minute] after 1 cycle of PCR at 94.degree. C. for 2
minutes.
TABLE-US-00009 Forward primer: (SEQ ID NO: 17) 5' CCC AAG ATG ATT
CCA GCA GTG 3' Reverse primer: (SEQ ID NO: 18) 5' GGA AGA ACC AGA
AGC CAA AGA 3'
[0209] The 0.3-kb FcR.gamma.cDNA fragment amplified was separated
and recovered by electrophoresis using 2% agarose gel, which was
cloned to pCR4Blunt-TOPO plasmid vector (manufactured by
Invitrogen) using Zero Blunt TOPO PCR Cloning kit (manufactured by
Invitrogen). The base sequences of the genes obtained were
analyzed, and it was confirmed that the desired FcR.gamma. gene
shown in SEQ ID NO: 15 was cloned.
B-4) Production of Myc-Tagged FcR.gamma. Expression Vectors
[0210] A plasmid expressing a protein in which Myc tag was attached
to C terminus was constructed so that the expression of FcR.gamma.
protein could be confirmed. The desired sequence was amplified by
PCR method using e FcR.gamma. gene produced as described in 3) as a
template as well as using primers with the following base
sequences. 1 nit of KOD Plus DNA polymerase (manufactured by TOYOBO
CO., LTD.) was used for PCR reaction. The conditions were set to 25
cycles of PCR [at 94.degree. C. for 15 seconds, at 55.degree. C.
for 30 seconds, and at 68.degree. C. for 1 minute] after 1 cycle of
PCR at 94.degree. C. for 2 minutes.
TABLE-US-00010 Forward primer (SEQ ID NO: 19): 5' CCG ctc gag ATG
ATT CCA GCA GTG GTC TTG 3' Reverse primer (SEQ ID NO: 20): 5' CTA
Gac tag tCT A[CA GAT CCT CTT CAG AGA TGA GTT TCT GCT C]CT GTG GTG
GTT TCT CAT G 3'
[0211] Of the above-mentioned primer sequences, the underlined
portion in parentheses shows a base sequence encoding the attached
Myc tag and each lowercase letter shows the cleavage site for the
restriction enzyme XhoI or SpeI. DNA fragments amplified by PCR
were cleaved by XhoI and SpeI, which were then separated by Gel
electrophoresis. About 0.3-kb DNA fragments were recovered, which
were ligated into pME18X vector cleaved by XhoI and SpeI in the
same manner as described above. Then, a plasmid capable of
expressing the desired fusion protein, i.e. pME18X-Myc-FcR.gamma.
was constructed.
C. Expression of ILT7 in Animal Cells
[0212] The expression of ILT7 in animal cells was examined using
expression vectors produced as described above.
C-1) Expression in 293T Cells
[0213] DNAs consisting of the following five combinations were
introduced into 293T cells (7.times.10.sup.5 cells) using effectene
transfection kit (manufactured by Qiagen). Two days after the
introduction, flow cytometry analysis (FCM analysis) was carried
out.
(1) pME18X-N-FLAG ILT7 2 .mu.g (2) pME18X-C-FLAG ILT7 2 .mu.g (3)
pME18X-N-FLAG ILT7 1 .mu.g+pME18X-Myc-FcR.gamma. 1 .mu.g (4)
pME18X-C-FLAG ILT7 1 .mu.g+pME18X-Myc-FcR.gamma. 1 .mu.g (5)
pME18X-Myc-FcR.gamma. 2 .mu.g
[0214] The method of FCM analysis was performed in the same manner
as described in A-4 of the following Example 2. Cy3 conjugated
anti-Flag antibody (manufactured by Sigma) was used for the
reaction and FACScan (manufactured by Becton Dickinson) was used
for the analysis. As a result, it was found that only a few ILT7
was expressed on the cell surface when reacted alone, while ILT7
was expressed extracellularly and robustly when coexisted with
FcR.gamma. (FIG. 3). It is known that mouse FcR.gamma. has high
homology with human FcR.gamma.. However, when p815 cells (mouse
mastocytoma) which express mouse FcR.gamma.were used as hosts, the
expression of ILT7 could not be observed.
C-2) Analysis by Immunoprecipitation and Western Blotting
Method
[0215] ILT7 was expressed with accompanying FcR.gamma. on the cell
surface, which was confirmed as follows. After immunoprecipitation,
various antibodies for each 293T cell which was coexpressed with
both genes in respective combinations described in (1) to (5) were
analyzed. DNAs were introduced into 293T cells (7.times.10.sup.5
cells), from which 293T cells were recovered two days after the
introduction in the same manner as described in 1). Cell
fractionations were dissolved in lysis buffer (0.5% Triton, 150 mM
Nacl), which was left on ice for 20 minutes. Thereafter, aspiration
using a needle (27G) was repeated several times, followed by
centrifuging at 15 Krpm for 20 minutes. Anti-myc antibody (2 .mu.g,
manufactured by Santa cruz biotechnology) or anti-Flag antibody (2
.mu.g, manufactured by Sigma) was added to 200 .mu.g of lysate of
the resulting products, which was further stirred by rotation at
4.degree. C. for 4 hours. Then, Protein A/G Sepharose 4 Fast Flow
mix (manufactured by Amersham bioscience) was added thereto, which
was stirred by rotation at 4.degree. C. for 1 hour. Then, the
resulting precipitated fractions were washed with lysis buffer with
the following composition 3 times.
Lysis Buffer:
0.5% TritonX-100,
50 mM HEPES (pH 7.6),
150 mM NaCl,
1 mM EDTA,
[0216] 10% glycerol,
1 mM DTT,
2 mM PMS F,
[0217] 1 .mu.g/ml Aprotinin, 1 .mu.g/ml Leupeptin, 1 .mu.g/ml
Pepstatin A, 0.1 .mu.g/ml Chymostatin,
1 mM Na.sub.3VO.sub.4,
[0218] 0.1 mM .beta.-glycerophosphate
[0219] A sample buffer for SDS-PAGE was added to the washed
precipitates, which was boiled for 5 minutes and centrifuged,
followed by performing electrophoresis with 10% SDS gel. Samples
were transferred from gels after electrophoresis to PVDF membrane
(Immobilon-p-transfer membrane: manufactured by Millipore) in
accordance with an ordinary method. Blotting was performed with
anti-Flag antibody and anti-myc antibody. It was confirmed that the
ILT7 associated with FcR.gamma. was present in 293T cells because
their presence in each immune precipitate was observed (FIG.
4).
C-3) Analysis of Sugar Chain
[0220] Since several bands of ILT7 were observed in the Western
analysis, the possibility that ILT7 was glycosylated was examined.
200 .mu.g of lysate of 293T cells which express N-FLAG ILT7 and
Myc-FcR.gamma. was immunoprecipitated with anti-Flag antibody in
the manner as described in 1) and 2). Thereafter, the precipitated
fractions were suspended in 60 .mu.L of N-glycosidase buffer with
the following composition and 30 .mu.L of each resulting solution
was aliquoted into two tubes.
N-glycosidase buffer:
10 mM EDTA,
0.2% SDS,
0.5% TritonX100,
[0221] 1% 2-mercaptoethanol in PBS (phosphate buffer)
[0222] Then, 3 units of 3 .mu.L of N-glycosidase (#1365177,
manufactured by Roche) were added to one tube, which was reacted at
37.degree. C. for 15 hours. Further, 7 .mu.L of sample buffer was
added thereto, which was heated at 100.degree. C. for 5 minutes,
followed by performing electrophoresis with 10% SDS gel. After
electrophoresis, gel was transferred to PVDF membrane, to which 1
.mu.g of anti-ILT7 polyclonal-antibody as described in 4) was added
and reacted at 4.degree. C. overnight. The resulting product was
washed with TBS-T buffer and reacted with 100,000-fold diluted
HRP-labeled anti-rabbit antibody (manufactured by Jackson) at room
temperature. Then, it was colored with ECL Western Blotting
Detection System (manufactured by Amersham bioscience). As a
result, the apparent molecular weight was decreased by performing
N-glycosidase treatment. Thus, it was expected that sugar chains
were added to ILT7 (FIG. 5).
C-4) Production of Anti-ILT7 Polyclonal Antibody
[0223] The used anti-ILT7 polyclonal antibody as described in 3)
was produced as follows. Peptide of 23 amino acids corresponding to
C terminus of ILT7 (CSQEANSRKDNAPFRVVEPWEQI; SEQ ID NO: 21) was
chemically synthesized and bound to KLH protein which is a career,
and the resulting product was used as an immunogen. Rabbits were
intradermally immunized with immunogen mixed with Freund complete
adjuvant. After six immunizations in all (once per week), the
increased antibody titer in serum was confirmed and then whole
blood was collected. Then, some serum was affinity purified using
peptide column of the same sequence. The resulting product was
determined as anti-ILT7 polyclonal antibody.
Example 2
A. Production of Anti-ILT7 Monoclonal Antibody
A-1) Production of Immunogen
[0224] Cells to be used as immunogens were prepared by introducing
genes to 293T cells as described below. 46.4 .mu.g of transgene
(pME18 X-C-FLAG ILT7 23.2 .mu.g and pME18X-Myc-FcR.gamma. 23.2
.mu.g) was added to the bottom of 100 mm/Collagen Coated Dish
(IWAKI) coated with 3 mL of opti-MEM (GIBCO) and mixed.
Subsequently, aside from the transgene solution, 58 .mu.L of
Lipofectamine (Trade name) 2000 (Invitrogen) was diluted with 3 mL
of opti-MEM, which was allowed to stand at room temperature for 5
minutes and Lipofectamine solution was prepared. Thereafter,
Lipofectamine solution was gently added to the dish containing the
transgene solution and mixed. After standing at room temperature
for 20 minutes, 10 mL of 293T-cells, diluted to 1.times.10.sup.6
cells/ML using DMEM culture medium (SIGMA) containing 10% FBS
(fetal bovine serum), was gently added to the dish. The resulting
medium was subjected to static culture in an incubator at 37'C
under CO.sub.2 for 48 hours, from which cells were recovered by
pipetting. The obtained cells were used as transfectants for
immunogens.
A-2) Production of Hybridomas
[0225] On the day before cells were immunized, 50 .mu.L of emulsion
obtained by mixing 200 .mu.L of PBS with 200 .mu.L of complete
adjuvant (FREUND) (RM606-1, manufactured by Mitsubishi Kagaku
Iatron, Inc.) was injected to the bottoms of both feet of four
Balb/c female mice (four-week-old) for immunization. On the
following day, 50 .mu.L of 2.times.10.sup.7 cells suspended in 400
.mu.L of PBS was immunized. The second and third immunizations were
performed every four days. Three days following the third
immunization, cell fusion was performed as follows. Cells were
collected from lymph nodes of mice feet immunized. Mouse myeloma
cells P3-X63-Ag8-U1 cultured in RPMI1640 culture medium (SIGMA)
containing 10% FBS were mixed with the cells derived from lymph
nodes and myeloma so that the ratio of the mouse myeloma cells to
the cells derived from lymph nodes and myeloma should be 2:1 to
10:1, from which cells were recovered by centrifugation. PEG4000
(MERCK) equivalently diluted with RPMI1640 culture medium was added
to the obtained cell fractions, which was subjected to cell fusion.
After washing cells, the resulting product was suspended in 160 mL
of 15% FBS-HAT-medium containing a supplement and then inoculated
into sixteen 96-well plates at 200 .mu.L/well. The culture medium
was exchanged after three days. One to two weeks after observation
of the colony formation, primary screening was performed.
A-3) Screening of Hybridoma by Cell ELISA Method
[0226] Hybridoma, which produces target antibody, was screened by
the following Cell ELISA. The produced cells as described in 1)
were used at 1.times.10.sup.7 cells per 96-well plate, which were
suspended in 0.5% BSA/2 mM EDTA/PBS and then aliquoted to a plate
for Cell ELISA (NUNC 249570 96V NW PS) at 100 .mu.L/well.
Centrifugation was carried out at 2,000 rpm at 4.degree. C. and
then the supernatant was discarded. Sampled culture supernatant was
added at 50 .mu.L/well, which was reacted at room temperature for
30 minutes. Washing operation that involves adding 0.5% BSA/2 mM
and EDTA/PBS to each well, centrifuging at 2,000 rpm at 4.degree.
C. for 2 minutes, and then discarding the supernatant was carried
out twice. 50 .mu.L/well of 10,000-fold diluted peroxidase-labeled
goat anti-mouse IgG antibody (IM0819; Beckman coulter) was added to
each well after washing, which was reacted for 30 minutes. The
washing operation using 0.5% BSA/2 mM-EDTA/PBS was carried out
twice, followed by adding a coloring solution. The prepared
antibody solution was substituted with PBS (-) by a dialysis
membrane (10,000 cuts manufactured by PIERCE) to give purified
anti-ILT7 chimeric antibodies.
A-4) Examination of Antibody Responsiveness by Flow Cytometry (FCM)
Analysis
[0227] Hybridoma culture supernatant was analyzed by flow cytometry
(FCM) analysis. The produced cells as described in 1) was suspended
in 0.5% BSA/2 mM EDTA/PBS, which was transferred into a centrifugal
tube at 1.times.10.sup.5 per one sample, followed by adding 40
.mu.L of each culture and reacting at room temperature for 30
minutes. Washing operation that involves adding 1 ml of 0.5% BSA/2
mM and EDTA/PBS to each tube, centrifuging at 1200 rpm at 4.degree.
C. for 3 minutes, and discarding the supernatant was carried out
twice. 40 .mu.L of 100-fold diluted FITC-labeled goat anti-mouse
IgG antibody (IM0819; Beckman coulter) was added to each well after
washing, which was reacted at room temperature for 30 minutes. The
washing operation using 0.5% BSA/2 mM-EDTA/PBS was carried out
twice, followed by analyzing using flow cytometry FC500 (Beckman
coulter). A hybridoma producing an antibody which did not respond
to only host cell and responded specifically to the cell into which
gene had been introduced was selected. The selected hybridoma was
cloned by the limiting dilution method and hybridomas #11 and #17
which produce monoclonal antibodies were obtained.
B. Examination of Responsiveness of Anti-ILT7 Antibody
[0228] ILT7 in which FLAG tag was attached to N terminus was
coexpressed with FcR.gamma. molecule in 293T cells in the same
manner as described in C-1) of Example 1. Then, the responsiveness
of the antibody obtained in Example 2 was confirmed analysis using
FACScan (Becton Dickinson). As a result, 2t was confirmed than a'1
antibodies produced by hybridomas #11 and #17 which were obtained
as described in A responded to the cells into which ILT7 gene was
introduced and which expressed ILT7 (FIG. 6 (b)). Further,
lymphocytes were separated from human peripheral blood using Ficoll
and then double staining with the produced anti-ILT7 antibody and
PE-labeled anti-BDCA-2 antibody (Miltenyi) was performed. Then, the
responsiveness to the lymphocytes was examined. As a result, the
binding of monoclonal antibody produced by hybridomas #11 and #17
to BDCA-2 positive cell was detected. That is, it was confirmed
that both monoclonal antibodies recognized ILT7 molecules expressed
on human IPCs (FIG. 6 (a)). These monoclonal antibodies were
designated as anti-ILT7 antibody #11 and anti-ILT7 antibody #17,
respectively. More detailed analysis was performed.
[0229] Multiple-staining analysis for human peripheral blood
lymphocytes was carried out using the produced anti-ILT7 antibody,
anti-Lineage-1 antibody (anti-CD3, CD14, CD16, CD19, CD56
antibodies; Becton Dickinson), anti-CD123 antibody (Becton
Dickinson), and anti-BDCA-2 antibody (Miltenyi). As for ILT7
antibody-positive fractions, Lineage Marker was negative, CD123 was
positive, and BDCA-2 was positive. From the results, it was
confirmed that IPCs were stained by only ILT7#11 and ILT7#17 (FIG.
7).
[0230] Further, the expression of various molecules was examined by
FCM analysis when human peripheral blood lymphocytes were
stimulated by CpG or IFN.alpha. for 24 hours. CpGODN2216 was used
as CpGA, which induces the production of IFN from IPCs and
CpGODN2006, was used as CpGB which facilitates the maturation of
dendritic cells (Moseman et al. J. Immunology. 173, 4433-4442,
2004). A gate was set to Lineage Marker negative fraction. When the
responsiveness of anti-BDCA-2 antibody and anti-ILT7 antibody to
CD123 positive cell population was analyzed, most of the ILT7
positive fractions were disappeared even after 24-hours CpG
stimulation. On the other hand, some cells of BDCA-2 showed
positive after 24-hours CpG stimulation (FIG. 8). It has been
considered that IPCs are differentiated into different cells
immediately after the CpG stimulation. It was indicated that the
anti-ILT7 antibody of the present invention was useful as a stage
specific antibody to IPCs. Further, it was confirmed that IPCs in
peripheral blood lymphocytes were not differentiated under the
presence of IFN.alpha., in this case where the survival ratio was
high, the expression of ILT7 was maintained on IPCs, further ILT7
was stably present on IPCs in autoimmune diseases with the
possibility that IFN in serum was at a high level.
C. Examination of Specificity of Anti-ILT7 Antibody
[0231] ILT7 belongs to ILT/LIR family and there is a plurality of
molecules with high homology, particularly with high homology in
the extracellular region (FIG. 9). It has been reported that mRNAs
of molecules, especially such as ILT2 and ILT3 are expressed in
IPCs (Ju et al. Gene 331, 159-164, 2004). Therefore, the
responsiveness of these molecules was confirmed using transgenic
cells.
C-1) Cloning of ILT1 Molecule and Production of Expression
Vectors
[0232] cDNA was synthesized from RNA derived from human tonsil
using oligo dT primer and SuperScript Choice System for cDNA
Synthesis kit. Next, a NotI adapter was ligated into pME18S vector
cleaved by NotI, resulting in production of human tonsil cDNA
library.
[0233] ILT1 gene with a FLAG tag at the C terminus was amplified by
PCR method using the produced cDNA library as a template as well as
using primers with the following base sequences. 1 unit of KOD Plus
DNA polymerase (manufactured by TOYOBO CO., LTD.) was used for PCR
reaction. Reaction conditions were set to 25 cycles of PCR [at
94.degree. C. for 15 seconds, at 55.degree. C. for 30 seconds, and
at 68.degree. C. for 2 minutes] after 1 cycle of PCR at 94.degree.
C. for 2 minutes.
TABLE-US-00011 Forward primer (SEQ ID NO: 22): 5' CCG ctc gag ATG
ACC CCC ATC CTC ACG GTC C 3' Reverse primer (SEQ ID NO: 23): 5' CTA
Gac tag tTC A[CT TAT CGT CGT CAT CCT TGT AAT C]CC TCC CGG CTG CAT
CTT G 3'
[0234] In the above-mentioned primer sequences, the underlined
portion in parentheses shows a base sequence encoding the attached
FLAG tag and each lowercase letter shows the cleavage site for the
restriction enzyme XhoI or SpeI. DNA fragments amplified by PCR
were cleaved by XhoI and SpeI, which were then separated by Gel
electrophoresis. About 2-kb DNA fragments were recovered, which
were ligated into pME18X vector cleaved by XhoI and SpeI in the
same manner as described above. Then, a plasmid capable of
expressing the desired fusion protein, i.e. pME18X-C-FLAGILT1 was
constructed. The base sequence and amino acid sequence are shown in
SEQ ID NO: s: 24 and 25.
C-2) Production of Expressing Cells and Examination of Antibody
Responsiveness
[0235] As for ILT2 (SEQ ID NO: 26) and ILT3 (SEQ ID NO: 28),
expression vectors in which respective genes were cloned to XbaI or
XhoI sites of pcDNA4.1 (manufactured by Invitrogen) were used. DNAs
of the following combinations were introduced into 293T cells
(7.times.10.sup.5 cells) in the same manner as described in C-1).
Two days after the introduction, FCM analysis was carried out and
then anti-ILT7 antibody was analyzed.
(1) pME18X-N-FLAG ILT7 1 .mu.g+pME18X-Myc-FcR.gamma. 1 .mu.g (2)
pME18X-C-FLAG ILT1 0.5 .mu.g+pME18X-Myc-FcR.gamma. 0.5
g+pcDNA4.1-ILT2 0.5 .mu.g+pcDNA4.1-ILT3 0.5 .mu.g
[0236] As a result, any antibodies did not respond to the cells in
which ILT1 was expressed. For this reason, it was suggested that
these anti-ILT7 antibodies specifically recognized ILT7 molecules
on IPCs (FIG. 10).
Example 3
Effect of Anti-ILT7 Antibody on Ability to Produce Human IFN
[0237] Human peripheral blood lymphocytes were inoculated into 96
well plate at 2.times.10.sup.5 cells/well, which were reacted with
5 .mu.g/mL of various antibodies at 37.degree. C. After 1-hour
culture, influenza virus PR8 was added thereto. After 24-hours
culture, IFN.alpha. in the culture supernatant was measured by
ELISA kit (Bender Med System). As a result, the production of IFN
was inhibited by the addition of anti-ILT7 antibody (FIG. 11).
Namely, it was found out that the IFN production by IPCs was
affected by the anti-ILT7 antibody of the present invention.
Example 4
[0238] CDC Activity of anti-ILT7 Antibody
A. Production of Anti-ILT7 Monoclonal Antibody
[0239] A clone which produces a monoclonal antibody was obtained in
the same manner as described in A-1) to A-4) of Example 2. The
responsiveness was examined in the same manner as described in B of
Example 2 and the specificity was examined in the same manner as
described in C of Example 2. As a result, hybridomas #37, #28, and
#33, which produced anti-ILT7 monoclonal antibodies with good
responsiveness and specificity, were obtained. CDC activity was
measured as described below using anti-ILT7 monoclonal antibody in
which three kinds of these hybridomas were produced.
B. Determination of CDC Activity
[0240] B-1) On the previous day of production of target Production
of target cell line (ILT7-CHO cell line), the following DNA was
introduced into CHO-k1 cells, which were inoculated so as to be
6.times.10.sup.5 cells per one dish (6 cm.phi.) using Effectene
Transfection Reagent (manufactured by QLAGEN) and then resistant
strains were selected using 800 .mu.g/ml of Zeocin (manufactured by
Invitrogen). Introduced DNA: pcDNA3.1-C-FLAG ILT7 1
.mu.g+pME18X-Myc FcR.gamma. 2 .mu.g
[0241] Thereafter, a cell line, which highly expressed ILT7, was
obtained using the cell sorter (BD FACSAria, manufactured by Becton
Dickinson). It was confirmed that the selected cell line highly
expressed ILT7 by FCM analysis. Operation of FCM analysis was
carried out in accordance with the method as described in A-4) of
Example 2 except that BD FACSCaliber (manufactured by BD) was used
for FCM. The following antibodies were used for a primary antibody
and a secondary antibody, respectively.
Primary antibody: 5 .mu.g/ml mouse anti-ILT7 antibody (#37),
[0242] Secondary antibody: R-phycoerythrin (R-PE)-conjugated goat
anti-mouse immunoglobulin specific polyclonal antibody (BD)
B-2) Response of Target Cells to Anti-ILT7 Antibodies
[0243] The obtained target cells as described in B-1) (ILT7-CHO
cell) were recovered using 5 mM EDTA/PBS solution, which were
suspended in CDC medium with the following composition so as to be
a concentration 4.times.10.sup.5 cells/ml. The suspension was
aliquoted into each 96-well plate at 50 .mu.l/well.
CDC Medium:
RPMI1640
0.1% BSA
[0244] 100 units/ml Penicillin 100 .mu.g/ml Streptomycin
10 mM Hepes (pH 7.6)
2 mM L-Glutamin
[0245] 50 .mu.l of anti-ILT7 antibody solution prepared by CDC
medium was added to each well and mixed so that the final
concentration of antibodies should be 0.1 .mu.g/ml, 0.5 .mu.g/ml, 1
.mu.g/ml, and 5 .mu.g/ml. Further, 50 .mu.l of CDC medium
containing a complement with the following composition was added
thereto and mixed so that the final complement concentration should
be 6%, followed by culturing at 37.degree. C. for 2 hours.
CDC Medium Containing a Complement:
[0246] 1 ml of complement of juvenile rabbit (Catalog No.: CL3441,
manufactured by CEDARLANE)
CDC Medium (Vide Supra)
[0247] Then, the suspension was centrifuged (centrifugal condition:
at 250 G for 4 minutes) and the supernatant was recovered while
paying attention not to be contaminated with cells. LDH in the
supernatant was measured by an ordinary method, which was
determined as "The amount of LDH leaked from the target cell by the
complement activity" (Experimental Sample).
[0248] The following parameters were also prepared in order to
determine CDC activity. [0249] Target Cell Spontaneous LDH Release:
only target cells were cultured in the same volume as the sample
and prepared. [0250] Target Cell Maximum LDH Release: only target
cells were cultured in the same volume as the sample, and then
TritonX-100 solution included with the kit was added thereto 60
minutes before recovery of the supernatant so that the final
concentration should be 0.8% and prepared. [0251] Volume Correction
Control: the same amount of TritonX-100 as that added when Target
Cell Maximum LDH Release was prepared was added to the culture
medium of the same volume as the sample and prepared. [0252]
Culture Medium Background: the culture medium of the same volume as
the sample and the solution to which complement containing CDC
medium was added to the culture medium so as to be the same volume
as the sample were prepared.
[0253] The same volume of culture medium as the sample was
subtracted from the absorbance of Target Maximum and Target
Spontaneous. The solution to which complement containing CDC medium
was added to the culture medium so as to be the same volume as the
sample was subtracted from the absorbance of Experimental Sample
and corrected. The CDC activity was calculated by the following
equation. The results are shown in Table 1 and FIG. 12. Even in the
case where anti-ILT7 monoclonal antibodies obtained from any
hybridoma were used, 80% or more of CDC activity was exhibited when
the antibody concentration was 0.5 .mu.g/ml or more.
CDC activity ( % ) = Experimental Sample - Target Spontaneous
Target Maximum - Volume Control - Target Spontaneous .times. 100
##EQU00001##
TABLE-US-00012 TABLE 1 Antibody concentration Cytotoxicity
Cytotoxicity (.mu.g/ml) (Aver) (STD) #37 0.1 14.78 3.16 0.5 85.50
0.60 1 86.13 2.93 5 90.26 1.87 #28 0.1 18.52 0.60 0.5 80.97 1.62 1
83.64 1.99 5 88.17 3.32 #33 0.1 4.42 1.58 0.5 82.16 3.35 1 85.39
2.78 5 86.18 1.71 Mouse IgG2a 0.1 1.53 0.60 0.5 1.47 2.50 1 3.68
2.90 5 3.06 1.72 no Ab 0 2.10 0.49
Comparative Example 1
[0254] Exactly the same operation was performed in the same manner
as described in B and C of Example 4 except that mouse IgG2a was
used in place of anti-ILT7 antibody. The results are shown in
Example 4 as well as Table 5 and Fig. The CDC activity to the
target cells was not observed in antibodies other than anti-ILT7
monoclonal antibody.
Example 5
Internalization of Anti-ILT7 Antibody to Target Cells
A. Anti-ILT7 Monoclonal Antibody
[0255] The following anti-ILT7 monoclonal antibodies were used.
Anti-ILT7 monoclonal antibodies: #17, #26, #37, #28, and #33
B. Observation of Internalization
B-1) Production of Target Cell Line (ILT7-CHO Cell Line)
[0256] The target cell line (ILT7-CHO cell line) was produced in
the same manner as described in B-1 of Example 4.
B-2) Response of Target Cells to Anti-ILT7 Antibody
[0257] The recovered ILT7-CHO cells were suspended in ice-cold
buffer (T(-)+10% FBS) with the following composition at
1.times.10.sup.6 Cells/mL using 5 mM of EDTA/PBS solution.
T (-) Medium:
RPMI1640
[0258] 100 units/ml Penicillin 100 .mu.g/ml Streptomycin
10 mM Hepes (pH 7.6)
2 mM L-Glutamin
[0259] 1 mM sodium pyruvate 50 .mu.M 2-mercaptoethanol 10% heat
inactivated Fetal Bobine Serum 1 mL of suspension as described
above was placed into a 15 mL centrifugal tube, which was
centrifuged (centrifugal condition: at 1200 rpm, at 4.degree. C.,
for 5 minutes) and then the supernatant was discarded. 200 .mu.L of
anti-ILT7 monoclonal antibody suspension of (10 .mu.g/mL) was added
to cell pellets, which was mixed and incubated at 4.degree. C. for
30 minutes, followed by washing with ice-cold T (-) medium twice
(the amount of the medium used: 10 mL per washing, centrifugal
condition: at 1200 rpm, at 4.degree. C., for 5 minutes).
B-3) Modification of ILT7-Anti-ILT7 Antibody Immune Complex Present
on the Surface of Target Cells
[0260] Subsequently, ILT7-anti-ILT7 antibody immune complex present
on the surface of cells was modified with a secondary antibody,
which was labeled with fluorescence for detection. Specific method
is described below. APC-labeled goat anti-mouse IgG polyclonal
antibody (Catalog number: 550826BD, manufactured by Biosciences)
containing ice-cold T (-) medium was added to cell pellets obtained
as described in B-2), which was incubated with shading at 4.degree.
C. for 20 minutes, followed by washing with ice-cold T (-) medium
twice (the amount of the medium used: 10 mL per washing,
centrifugal condition: at 1200 rpm, at 4.degree. C., for 5
minutes). Then, ice-cold T (-) medium was added thereto, which was
used as 1.times.10.sup.6 Cells/mL of suspension.
B-4) Induction of Internalization by Incubation at 37.degree.
C.
[0261] The suspension obtained as described in B-3 was equally
divided into two tubes (i.e. tubes (a) and (b)). The tubes (a) and
(b) were incubated at 37 and 4.degree. C., respectively, under
shading condition for 60 minutes. After the incubation, 1% FBS/PBS
(ice-cold) was added thereto in order to stop internalization. The
resulting solution was centrifuged (centrifugal condition: at 1200
rpm, at 4.degree. C., for 5 minutes) and then the supernatant was
discarded, followed by washing with 1% of FBS/PBS (ice-cold) twice
(the amount of the solution: 10 mL per washing, centrifugal
condition: at 1200 rpm, at 4.degree. C., for 5 minutes).
B-6) Modification of ILT7-Anti-ILT7 Antibody Immune Complex
Remained on the Surface of Target Cells after Incubation
[0262] ILT7-anti-ILT7 antibody immune complex remained on the cell
surface after incubation was modified with a tertiary antibody in
order to detect, by fluorescence. Specific method is described
below. 20 .mu.L of suspension containing tertiary antibodies
(FITC-labeled donkey anti-goat IgG antibody (Catalog number:
sc-2024, manufactured by Santa cruz biotechnology)) was added to
cell pellets obtained as described in B-4), which was mixed and
allowed to stand at 4.degree. C. for 15 minutes under shading
condition. The resulting solution was washed with (the amount of
the solution: 10 mL per washing, centrifugal condition: at 1200
rpm, at 4.degree. C., for 5 minutes).
B-5) Analysis of Anti-ILT7 Antibody Present in Target Cells
[0263] Subsequently, 150 .mu.l, of 1% FBS/PBS was added to cell
pellets obtained as described in B-5), which was suspended and
collected into a 1.2 ml microtiter tube, followed by performing FCM
analysis. In analysis, the mean fluorescence intensity (MPI) of
each cell was analyzed separately in FITC and APC. Further, the
fluorescence intensity ratio (%) was calculated by the following
equation.
Fluorescence intensity ratio ( % ) = Mean fluorescence intensity of
cells incubated at 37 .degree. C . for 60 minutes Mean fluorescence
intensity of cells incubated at 4 .degree. C . for 60 minutes
.times. 100 ##EQU00002##
[0264] The results are shown in Table 2, Table 3, and FIG. 13.
TABLE-US-00013 TABLE 2 FITC APC Mean Mean fluorescence fluorescence
intensity Fluores- intensity Fluores- Temperature of cence
Temperature of cence incubation (.degree. C.) intensity incubation
(.degree. C.) intensity 4 37 ratio (%) 4 37 ratio (%) #17 35.7 15.9
44.5 1384 1320 95.4 #26 29.8 16.5 55.4 844 816 96.7 #37 51.0 28.5
55.9 2194 2155 98.2 #28 40.6 19.3 47.5 1746 1709 97.9 #33 47.7 22.6
47.4 1882 1845 98.0 IgG2a 3.7 4.2 116.2 3 3.64 121.3
TABLE-US-00014 TABLE 3 Species of primary Fluorescence intensity
ratio (%) antibodies APC FITC Example 5 Anti-ILT7 antibody #17 95.4
44.5 Anti-ILT7 antibody #26 96.7 55.4 Anti-ILT7 antibody #37 98.2
55.9 Anti-ILT7 antibody #28 97.9 47.5 Anti-ILT7 antibody #33 98.0
47.4 Comparative Mouse IgG2a 121.3 116.2 example 2
[0265] The fluorescence intensity of FITC is an indicator of the
amount of ILT7-anti-ILT7 antibody immune complex remained on the
cell surface after incubation. The mean fluorescence intensity of
FITC as to the cells incubated at 37.degree. C. for 60 minutes fell
to about 50% as compared with the cells incubated at 4.degree.
C.
[0266] On the other hand, APC fluorescence intensity is an
indicator of the amount of ILT7-anti-ILT7 antibody immune complex
presented on the cell surface before incubation. ILT7-anti-ILT7
antibody immune complex is detected regardless of whether it is
present on the cell surface or incorporated into cells after
incubation. In Example 5, APC fluorescence intensity after the
incubation in the case of incubation at 37.degree. C. was
equivalent to that in the case of incubation at 4.degree. C. It
shows that ILT7-anti-ILT7 antibody immune complex may be present in
any site of target cells even when the incubation is performed at
either temperature. As mentioned above, it was found that the
anti-ILT7 monoclonal antibody evoked the internalization of ILT7 by
the incubation at 37.degree. C.
Comparative Example 2
[0267] Exactly the same operation was performed in the same manner
as described in Example 5 except that mouse IgG2a was used in place
of anti-ILT7 antibody. The results are shown in Example 5 as well
as Table 2, Table 3, and FIG. 13. In the case where the mouse IgG2a
was used, any chances in the fluorescence intensity of FITC and APC
were not observed, thus was found that the mouse IgG2a did not
evoke the internalization ILT7.
Example 6
Concerning the Structure of Mouse Anti-Human ILT7 Monoclonal
Antibody
[Sequences of Variable Regions]
[0268] A. Cloning of cDNA Encoding Variable Region of Mouse
Anti-ILT7 Antibody A-1) Concerning Hybridomas which Produce Mouse
Anti-ILT7 Antibodies
[0269] The following hybridomas were used as hybridomas which
produce mouse anti-ILT7 antibodies. [0270] Hybridoma #11 (Accession
number: FERM BP-10704) [0271] Hybridoma #17 (Accession number: FERM
BP-10705)
A-2) Isolation of the Total RNAs
[0272] The total RNAs were isolated from hybridomas described in
A-1) using a commercially available kit "RNeasy Mini Kit" (Catalog
number: 74106, manufactured by Qiagen) in accordance with the
instruction attached to the kit. In both cases, about 200 .mu.q of
the total RNAs was obtained from 1.times.10.sup.7 hybridomas.
A-3) Amplification and Fragmentation of cDNA Encoding a Mouse Heavy
Chain Variable Region
[0273] cDNA encoding a mouse heavy chain variable region was
amplified by 5'RACE method using 5 .mu.g of the total RNAs isolated
as described in A-2. As for amplification, commercially available
kit "5'RACE System for Rapid Amplification of cDNA ENDs, Version
2.0 Kit" (Catalog number: 18374-058, manufactured by Invitrogen)
was used. It will be specifically described as follows. First, a
first strand cDNA was synthesized from the total RNAs obtained as
described in A-2) by reverse transcriptase. The base sequences of
antisense primers (GSP1) used at the time are shown in Table 4.
TABLE-US-00015 TABLE 4 Primers used for amplification of a gene
encoding a mouse heavy chain variable region SEQ ID Used hybridomas
Names of primers No. Sequence #11 Mu IgG3VH5RACE-GSP1 30 5' CCA TAG
TTC CAT TTT ACA GTT ACC 3' (24-mer) Mu IgG3VH5RACE-GSP2 31 5' GGG
ACC AAG GGA TAG ACA GA 3' (20-mer) #17 Mu IgG2aVH5RACE-GSP1 32 5'
TCC AGA GTT CCA GGT CAA GGT CAC 3' (24-mer) Mu IgG2aVH5RACE-GSP2 33
5' GCC AGT GGA TAG ACC GAT GG 3' (20-mer)
[0274] Subsequently, the total RNAs were degraded by RNaseH and the
first strand cDNA remained as a single strand was purified by
low-melting point agarose method (1.5%). Further, dC (i.e.
nucleotide homopolymer) was attached to the 3'-terminus of the
first chain cDNA using terminal deoxynucleotidyl transferase (TdT).
cDNA was amplified by PCR method using an anchor primers (SEQ ID
NO: 34) having a nucleotide polymer complementary to dC (anchor
sequence) at 3'-terminus and antisense primers (GSP2) shown in
Table 4. Further, the obtained PCR products were used as templates.
cDNA was amplified by Nested PCR method using AUAP primer (SEQ ID
NO: 35) and antisense primers (GSP2) shown in Table 4. Further, the
PCR products were purified by low-melting point agarose method
(1.5%).
TABLE-US-00016 Anchor primer for 5'RACE (SEQ ID NO: 34) 5'-GGC CAC
GCG TCG ACT AGT ACG GGI IGG GII GGG IIG-3' (36-mer) AUAP primer gor
5'RACE (SEQ ID NO: 35) 5'-GGC CAC GCG TCG ACT AGT AC-3'
(20-mer)
A-4) Amplification and Fragmentation of cDNA Encoding Mouse Light
Chain Variable Region
[0275] cDNA encoding a mouse light chain variable region was
amplified from the total RNAs isolated as described in A-2) in the
same manner as described in A-3). The base sequences of primers
used at the time is shown in Table 5. The obtained PCR products
were purified by low-melting point agarose method (1.5%).
TABLE-US-00017 TABLE 5 Primers used for amplification of a gene
encoding a mouse light chain variable region SEQ ID Used hybridomas
Names of primers No. Sequence #11, #17 Mu IgVL5RACE-GSP1 36 5' TTC
ACT GCC ATC AAT CTT CCA CTT 3' (24-mer) Mu IgVL5RACE-GSP2 37 5' GAT
GGA TAC AGT TGG TGC AGC 3' (21-mer)
A-5) Confirmation of Base Sequence of cDNA and Determination of CDR
Region
[0276] A heavy chain variable region obtained as described in A-3)
and cDNA fragment of light chain variable region obtained as
described in A-4) were cloned to pCR4 Blunt-TOPO vector using a
commercially available kit "Zero Blunt TOPO PCR Cloning Kit"
(Catalog number: 1325137, manufactured by Invitrogen) in accordance
with the instruction attached to the kit, which was then introduced
into Escherichia coli competent cells to give Escherichia coli
transformant. The above-mentioned plasmid was obtained from the
transformant, then cDNA base sequence in the plasmid was confirmed
using an automatic DNA sequencer "PCR-based ABI PRISM 3100 Genetic
Analyzer" (manufactured by Applied Biosystems). Correct sequences
were extracted by excluding transcripts obtained from an inactive
RNA due to frame shift and nonsense mutations around the
complementarity-determining region (hereinafter referred to as "CDR
region"). Further, the homology of cDNA base sequence comprised in
the plasmid was compared with Kabat database and sequences of the
CDR region and the variable region in respective variable regions
were determined. Also, as for the hybridoma #37 produced in Example
4, sequences of the CDR region and the variable region in variable
regions were determined in the same procedure as described in A-1)
to A-5) of Example 6 using hybridoma #17. cDNA base sequences of
the heavy chain variable regions and light chain variable regions
of the anti-ILT7 monoclonal antibodies produced by each hybridoma
and amino acid sequences encoded by the sequences are shown in the
following SEQ ID NOs.
TABLE-US-00018 Heavy chain variable region Light chain variable
region #11 SEQ ID NO: 38 SEQ ID NO: 40 (base sequence) (base
sequence) SEQ ID NO: 39 SEQ ID NO: 41 (amino acid sequence) (amino
acid sequence) #17 SEQ ID NO: 42 SEQ ID NO: 44 (base sequence)
(base sequence) SEQ ID NO: 43 SEQ ID NO: 45 (amino acid sequence)
(amino acid sequence) #37 SEQ ID NO: 46 SEQ ID NO: 48 (base
sequence) (base sequence) SEQ ID NO: 47 SEQ ID NO: 49 (amino acid
sequence) (amino acid sequence)
[Confirmation of Isotype of Constant Region]
[0277] As for the hybridoma culture supernatant, the isotype of the
constant region of the produced monoclonal antibody was confirmed
using a commercially available mouse monoclonal antibody isotyping
kit (Catalog number: MMT1, manufactured by Serotec Product). The
heavy chain constant region of mouse anti-human ILT7 antibody #11
was Ig.gamma.3 and the light chain constant region was Ig.kappa..
Further, each of the heavy chain constant regions of mouse
anti-human ILT7 antibody #17 and mouse anti-human ILT7 antibody #37
was Ig.gamma.2a and each of the light chain constant region was
Ig.kappa..
Example 7
Production of Chimeric Antibodies
[0278] A. Cloning of cDNA Encoding Human IgG Constant Region
[0279] Human IgG1 heavy chain constant region and human Ig kappa
light chain constant region were selected from cDNA library of
human IPCs. Then, the selected regions were cloned to pCR4
Blunt-TOPO vector using a commercially available kit "Zero Blunt
TOPO PCR Cloning Kit" (Catalog number: 1325137, manufactured by
Invitrogen) in accordance with the instruction attached to the kit,
which was then introduced into Escherichia coli competent cells to
give Escherichia coli transformant. The above-mentioned plasmid was
obtained from the transformant, then cDNA base sequence in the
plasmid was confirmed using an automatic DNA sequencer "PCR-based
ABI PRISM 3100 Genetic Analyzer" (manufactured by Applied
Biosystems).
B. Ligation of Variable Region with Constant Region and Cloning
[0280] The cDNA encoding the heavy chain constant region obtained
as described in A and the cDNA encoding the heavy chain variable
region obtained as described in A-5 of Example 6 was used,
respectively. Both DNAs have a region in which a base sequence of
DNA is overlapped. Then, double-stranded DNA was obtained by the
overlap extension method using the region. Specific process is as
follows.
C-1) Preparation of cDNA Encoding Heavy Chain of Chimeric ILT7
Antibody
[0281] The "plasmid with cDNA encoding heavy chain variable regions
of #11 and #17" which was obtained as described in A-5) was
digested with restriction enzymes NotI and XbaI, which was purified
by the agarose gel method (1.5%). The resulting products were
dissolved in each TE buffer with the following composition so as to
be 100 pmol/.mu.L to prepare a solution of the cDNA fragment
encoding the heavy chain variable region.
TE Buffer:
10 mM Tris-HCl
1 mM EDTA
[0282] pH 7.5 to 8.0
[0283] Further, the "plasmid with cDNA encoding the heavy chain
constant region" obtained as described in B was treated in the same
manner as described above to prepare 100 pmol/.mu.L of solution.
Subsequently, both solutions were mixed, and then both of the
overlap regions were hybridized by first keeping them at 70.degree.
C. for 10 minutes and next keeping them at 37.degree. C. for 5
minutes. Thereafter, cDNA was amplified by PCR method and the
obtained cDNA was digested with restriction enzymes NotI and XbaI,
which was purified by the low-melting point agarose gel method
(1.5%).
C-2) Preparation of cDNA Encoding Light Chain of Chimeric ILT7
Antibody
[0284] The cDNA encoding the light chain constant region obtained
as described in A and the cDNA encoding the light chain variable
region obtained as described in A-5 of Example 6 was used,
respectively. cDNA encoding the light chain of chimeric ILT7
antibody was obtained in the same manner as described in C-1) using
these cDNAs.
C-3) Cloning
[0285] cDNA obtained as described in C-1) was cloned to plasmid
vector pcDNA3.1-Zeocin (manufactured by Invitrogen) using NotI and
XbaI as cloning sites to produce a chimeric ILT7 antibody heavy
chain expression vector. Further, cDNA obtained as described in
C-2) was cloned to plasmid vector pcDNA3.1-hygromycin (manufactured
by Invitrogen) using NotI and XbaI as cloning sites to produce a
chimeric ILT7 antibody light chain expression vector. Names of each
vector are shown in Table 6.
TABLE-US-00019 TABLE 6 Names of plasmid vectors Chimeric ILT7
antibody heavy Chimeric ILT7 antibody light chain for expression
chain for expression #11 pcDNA-#11VH pcDNA-#11VL #17 pcDNA-#17VH
pcDNA-#17VL
D. Expression of Chimeric ILT7 Antibody
D-1) Transient Transformation
[0286] 1 .mu.g of chimeric ILT7 antibody heavy chain expression
vector and 1 .mu.g of chimeric ILT7 antibody light chain expression
vector, which were obtained as described in C-3), were
co-transfected to 293T cells using effectine transfection kit
(Catalog number: 301427, manufactured by Qiagen). Thereafter, the
resulting products were cultured at 37.degree. C. using 2% Low IgG
FBS-added DMEM culture medium with the following composition.
2% Low IgG FBS-Added DMEM Culture Medium:
[0287] DMEM culture medium (Catalog number: D5796, manufactured by
Sigma) 2% Low IgG FBS (Catalog number: SH30151. 03, manufactured by
HyClone)
2 mM L-Glutamin
100 U/ml Penicillin
[0288] 100 .mu.g/ml Streptomycin pH 7.2 to pH 7.4
[0289] After introduction of vectors, the resulting medium was
cultured for 96 hours and the culture supernatant was collected.
Then, the cell fragments were removed by centrifugation to give a
crude antibody solution.
D-2) Homeostasis Transformation
[0290] 1 .mu.g of chimeric ILT7 antibody heavy chain expression
vector and 1 .mu.g of chimeric ILT7 antibody light chain expression
vector, which were obtained as described in C-3), were
co-transfected to YB 2/0 cells (cells derived from rat myeloma,
ATCC#CRL-1622) using effectine transfection kit (Catalog number:
301427, manufactured by Qiagen). Among the used plasmid vectors,
the vector for the heavy chain expression is a marker for Zeocin
resistance and the vector for the light chain expression is a
marker for hygromycin resistance. Therefore, cells into which both
vectors were introduced can be grown in a culture medium to which
Zeocin and hygromycin are added at the same time. Then, the cells
were cultured in RPMI culture medium to which Zeocin and hygromycin
were added and a resistant strain was selected.
Zeocin-Hygromycin-Added RPMI Culture Medium:
[0291] RPMI1640 culture medium (Catalog number: R8758, manufactured
by Sigma)
10% FBS
[0292] 0.01 M HEPES (N-2-hydroxyethylpiperazine-N'-2-ethanesulfonic
acid) 1 mM Sodium pyruvate
2 mM L-Glutamine
100 U/ml Penicillin
[0293] 100 .mu.g/ml Streptomycin 55 .mu.M 2-mercaptoethanol 0.5
mg/ml Zeocin 0.5 mg/ml Hygromycin pH 7.2 to pH 7.4
[0294] Three days after that, the amount of antibody production in
the culture supernatant was determined by the ELISA method. ILT7
chimeric-antibody producing cell line with a high expression level
and cells sufficiently increased was selected. Furthermore, a
single cloning of the selected cell lines was performed by the cell
sorter method to obtain the following cell lines.
#11 ILT7 chimeric-antibody-producing cell line: #11-5 cell line and
#11-16 cell line #17 ILT7 chimeric-antibody-producing cell line:
#17-24 cell line
[0295] The above-mentioned cell lines (#11-5 cell line, #11-16 cell
line, and 17-24 cell line) were respectively cultured in 5%
FBS-added RPMI culture medium with the following composition. The
incubation temperature and incubation time were set to 37.degree.
C. and 96 hours, respectively.
5% FBS-Added RPMI Culture Medium:
[0296] RPMI1640 culture medium (Catalog number: R8758S,
manufactured by Sigma)
5% FBS
0.01 M HEPES
[0297] 1 mM Sodium pyruvate
2 mM L-Glutamin
100 U/ml Penicillin
[0298] 100 .mu.g/ml Streptomycin 55 .mu.M 2-mercaptoethanol pH 7.2
to pH 7.4
[0299] The culture supernatant was collected and then the cell
fragments were removed by centrifugation to give a crude antibody
solution.
E. Purification of Antibodies
[0300] Each of the crude antibody solutions obtained as described
in D-1 and D-2 was purified by protein A affinity column (rProtein
A Sepharose FF, Catalog number: 17-1279-01, manufactured by
Amershram Pharmacia). Purification conditions are as follows.
Affinity purification was carried out using PBS (-) buffer with the
following composition as an adsorption buffer and 0.1M sodium
citrate buffer (pH 3) as an elution buffer in accordance with the
attached instruction manual. 1 M Tris-HCl (pH 8.0) was added to the
eluted fractions to adjust the pH to around 7.2. The ODs at 450 to
620 nm were measured and then wells showing positive reaction were
selected. With reference to the concentration of purified
antibodies, the absorbance at 280 nm was determined and calculated
based on 1.38 OD/mg/ml. Relationships among chimeric ILT7
antibodies obtained, hybridomas from which the variable region gene
was derived, and host cells were summarized in Table 7.
PBS (-) Buffer:
[0301] 0.2 g/L Monopotassium dihydrogen phosphate 0.2 g/L Potassium
chloride 8 g/L Sodium chloride 1.15 g/L Disodium monohydrogen
phosphate anhydrous
TABLE-US-00020 TABLE 7 Produced chimeric antibodies Intro- Names of
produced chimeric Used Form of duced antibodies hybridomas
transformation cells #11 ILT7 chimeric antibody #11 Transient 293T
#17 ILT7 chimeric antibody #17 manner #11-5 ILT7 chimeric antibody
#11 Homeostasis YB 2/0 #11-16 ILT7 chimeric antibody #11 #17-24
ILT7 chimeric antibody #17
[0302] cDNA base sequences and amino acid sequences of the heavy
and light chains of the produced chimeric antibodies are shown
below, respectively. In each amino acid sequence, the amino acid
sequence from N-terminus to -1 is a signal sequence and the amino
acid sequence from 1 to C terminus is an amino acid sequence of a
mature protein. That is, heavy and light chains, which constitute
these chimeric antibodies, consist of the amino acid sequence from
1 to C terminus of each of the following amino acid sequences.
TABLE-US-00021 Heavy chain Light chain #11 SEQ ID NO: 50 SEQ ID NO:
52 (base sequence) (base sequence) SEQ ID NO: 51 SEQ ID NO: 53
(amino acid sequence) (amino acid sequence) #17 SEQ ID NO: 54 SEQ
ID NO: 56 (base sequence) (base sequence) SEQ ID NO: 55 SEQ ID NO:
57 (amino acid sequence) (amino acid sequence)
INDUSTRIAL APPLICABILITY
[0303] The present invention provided the immunogen useful in
producing the antibody specifically recognizing human ILT7 and the
method for producing anti-ILT7 antibody using the immunogen. The
antibody specifically recognizing human ILT7 of the present
invention specifically recognizes ILT7 under the presence of ILT
family. Therefore, the antibody of the present invention can be
used for the detection and isolation of human ILT7. For example,
the localization of ILT7 can also be analyzed using the antibody of
the present invention. It is considered that ILT7 is a molecule
closely related to the differentiation and function of IPCs or
dendritic cells. Therefore, the antibody, which recognizes ILT7
with high specificity, is useful for the analysis of function of
IPCs or dendritic cells. IPC-like (having the characteristic in
which BDCA-2 is expressed) cancer cells are known (Chaper of L et
al. Eur. J. Immunol. 34; 418-426, 2004, Maeda T et al., Int. J.
Hematol. 81; 148-154, 2005). Confirmation of the expression of ILT7
in these cells may allow for the diagnosis of cancer and a
therapeutic agent.
[0304] In the case of autoimmune diseases, for example, the deep
relationship between IFN.alpha. produced by IPCs and the
development of psoriasis, which is a skin disease, is pointed out
(Nestle F O et al., J. Exp. Med. 202, 135-143, 2005). Therefore,
the severity of psoriasis can be examined by identifying IPCs in
the skin tissue of psoriasis patients, i.e. in biopsy specimens
using the anti-ILT7 antibody.
[0305] It is known that the development of AIDS in HIV-infected
patients is correlated with the number of IPCs. Namely, lots of
IPCs have been observed in patients who do not show symptoms and
the reduction in IPCs has been observed in the onset (Soumells V.
et al., Blood 98; 906-912, 2001). Therefore, it is effective in
predicting the prognosis of virus infection, such as HIV.
[0306] For example, ILT7 is a molecule which is expressed
specifically in human IPCs. Therefore, the anti-ILT7 antibody of
the present invention can be used to detect, identify, or isolate
IPCs. IPCs are cells which produce most of the type 1 interferon.
Therefore, the detection, identification, or isolation is an
important objective in diagnosis and study of diseases that involve
type 1 interferon. As such diseases, various autoimmune diseases
and infections that interferon is involved in the formation of the
pathological condition may be illustrated.
[0307] Additionally, the anti-ILT7 antibody of the present
invention has the inhibitory effect on the activity of IPCs.
Therefore, the activity of IPCs can be inhibited by using the
anti-ILT7 antibody of the present invention. Furthermore, the
diseases that involve type 1 interferon can be treated by
inhibiting the activity of IPCs. Specifically, the anti-ILT7
antibody of the present invention is useful for various autoimmune
diseases and infections that interferon is involved in the
formation of the pathological condition. Particularly, since the
anti-ILT7 antibody has a high specificity, it can remove IPCs
efficiently.
Sequence CWU 1
1
8611577DNAHomo
sapiensCDS(24)..(1520)sig_peptide(24)..(71)mat_peptide(72)..(1520)
1cagggccagg aggaggagat gcc atg acc ctc att ctc aca agc ctg ctc ttc
53 Met Thr Leu Ile Leu Thr Ser Leu Leu Phe -15 -10 ttt ggg ctg agc
ctg ggc ccc agg acc cgg gtg cag gca gaa aac cta 101Phe Gly Leu Ser
Leu Gly Pro Arg Thr Arg Val Gln Ala Glu Asn Leu -5 -1 1 5 10 ccc
aaa ccc atc ctg tgg gcc gag cca ggt ccc gtg atc acc tgg cat 149Pro
Lys Pro Ile Leu Trp Ala Glu Pro Gly Pro Val Ile Thr Trp His 15 20
25 aac ccc gtg acc atc tgg tgt cag ggc acc ctg gag gcc cag ggg tac
197Asn Pro Val Thr Ile Trp Cys Gln Gly Thr Leu Glu Ala Gln Gly Tyr
30 35 40 cgt ctg gat aaa gag gga aac tca atg tcg agg cac ata tta
aaa aca 245Arg Leu Asp Lys Glu Gly Asn Ser Met Ser Arg His Ile Leu
Lys Thr 45 50 55 ctg gag tct gaa aac aag gtc aaa ctc tcc atc cca
tcc atg atg tgg 293Leu Glu Ser Glu Asn Lys Val Lys Leu Ser Ile Pro
Ser Met Met Trp 60 65 70 gaa cat gca ggg cga tat cac tgt tac tat
cag agc cct gca ggc tgg 341Glu His Ala Gly Arg Tyr His Cys Tyr Tyr
Gln Ser Pro Ala Gly Trp 75 80 85 90 tca gag ccc agc gac ccc ctg gag
ctg gtg gtg aca gcc tac agc aga 389Ser Glu Pro Ser Asp Pro Leu Glu
Leu Val Val Thr Ala Tyr Ser Arg 95 100 105 ccc acc ctg tcc gca ctg
cca agc cct gtg gtg acc tca gga gtg aac 437Pro Thr Leu Ser Ala Leu
Pro Ser Pro Val Val Thr Ser Gly Val Asn 110 115 120 gtg acc ctc cgg
tgt gcc tca cgg ctg gga ctg ggc agg ttc act ctg 485Val Thr Leu Arg
Cys Ala Ser Arg Leu Gly Leu Gly Arg Phe Thr Leu 125 130 135 att gag
gaa gga gac cac agg ctc tcc tgg acc ctg aac tca cac caa 533Ile Glu
Glu Gly Asp His Arg Leu Ser Trp Thr Leu Asn Ser His Gln 140 145 150
cac aac cat gga aag ttc cag gcc ctg ttc ccc atg ggc ccc ctg acc
581His Asn His Gly Lys Phe Gln Ala Leu Phe Pro Met Gly Pro Leu Thr
155 160 165 170 ttc agc aac agg ggt aca ttc aga tgc tac ggc tat gaa
aac aac acc 629Phe Ser Asn Arg Gly Thr Phe Arg Cys Tyr Gly Tyr Glu
Asn Asn Thr 175 180 185 cca tac gtg tgg tcg gaa ccc agt gac ccc ctg
cag cta ctg gtg tca 677Pro Tyr Val Trp Ser Glu Pro Ser Asp Pro Leu
Gln Leu Leu Val Ser 190 195 200 ggc gtg tct agg aag ccc tcc ctc ctg
acc ctg cag ggc cct gtc gtg 725Gly Val Ser Arg Lys Pro Ser Leu Leu
Thr Leu Gln Gly Pro Val Val 205 210 215 acc ccc gga gag aat ctg acc
ctc cag tgt ggc tct gat gtc ggc tac 773Thr Pro Gly Glu Asn Leu Thr
Leu Gln Cys Gly Ser Asp Val Gly Tyr 220 225 230 atc aga tac act ctg
tac aag gag ggg gcc gat ggc ctc ccc cag cgc 821Ile Arg Tyr Thr Leu
Tyr Lys Glu Gly Ala Asp Gly Leu Pro Gln Arg 235 240 245 250 cct ggc
cgg cag ccc cag gct ggg ctc tcc cag gcc aac ttc acc ctg 869Pro Gly
Arg Gln Pro Gln Ala Gly Leu Ser Gln Ala Asn Phe Thr Leu 255 260 265
agc cct gtg agc cgc tcc tac ggg ggc cag tac aga tgc tac ggc gca
917Ser Pro Val Ser Arg Ser Tyr Gly Gly Gln Tyr Arg Cys Tyr Gly Ala
270 275 280 cac aac gtc tcc tcc gag tgg tcg gcc ccc agt gac ccc ctg
gac atc 965His Asn Val Ser Ser Glu Trp Ser Ala Pro Ser Asp Pro Leu
Asp Ile 285 290 295 ctg atc gca gga cag atc tct gac aga ccc tcc ctc
tca gtg cag ccg 1013Leu Ile Ala Gly Gln Ile Ser Asp Arg Pro Ser Leu
Ser Val Gln Pro 300 305 310 ggc ccc acg gtg acc tca gga gag aag gtg
acc ctg ctg tgt cag tca 1061Gly Pro Thr Val Thr Ser Gly Glu Lys Val
Thr Leu Leu Cys Gln Ser 315 320 325 330 tgg gac ccg atg ttc act ttc
ctt ctg acc aag gag ggg gca gcc cat 1109Trp Asp Pro Met Phe Thr Phe
Leu Leu Thr Lys Glu Gly Ala Ala His 335 340 345 ccc ccg ttg cgt ctg
aga tca atg tac gga gct cat aag tac cag gct 1157Pro Pro Leu Arg Leu
Arg Ser Met Tyr Gly Ala His Lys Tyr Gln Ala 350 355 360 gaa ttc ccc
atg agt cct gtg acc tca gcc cac gcg ggg acc tac agg 1205Glu Phe Pro
Met Ser Pro Val Thr Ser Ala His Ala Gly Thr Tyr Arg 365 370 375 tgc
tac ggc tca cgc agc tcc aac ccc tac ctg ctg tct cac ccc agt 1253Cys
Tyr Gly Ser Arg Ser Ser Asn Pro Tyr Leu Leu Ser His Pro Ser 380 385
390 gag ccc ctg gag ctc gtg gtc tca gga gca act gag acc ctc aat cca
1301Glu Pro Leu Glu Leu Val Val Ser Gly Ala Thr Glu Thr Leu Asn Pro
395 400 405 410 gca caa aag aag tca gat tcc aag act gcc cca cac ctc
cag gat tac 1349Ala Gln Lys Lys Ser Asp Ser Lys Thr Ala Pro His Leu
Gln Asp Tyr 415 420 425 aca gtg gag aat ctc atc cgc atg ggt gtg gct
ggc ttg gtc ctg ctg 1397Thr Val Glu Asn Leu Ile Arg Met Gly Val Ala
Gly Leu Val Leu Leu 430 435 440 ttc ctc ggg att ctg tta ttt gag gct
cag cac agc cag aga agc ccc 1445Phe Leu Gly Ile Leu Leu Phe Glu Ala
Gln His Ser Gln Arg Ser Pro 445 450 455 cca agg tgc agc cag gag gca
aac agc aga aag gac aat gca ccc ttc 1493Pro Arg Cys Ser Gln Glu Ala
Asn Ser Arg Lys Asp Asn Ala Pro Phe 460 465 470 aga gtg gtg gag cct
tgg gaa cag atc tgatgatctg aggaggttct 1540Arg Val Val Glu Pro Trp
Glu Gln Ile 475 480 ggaagactgg ggcagcagtt ggggaagtgt ctgctga
15772499PRTHomo sapiens 2Met Thr Leu Ile Leu Thr Ser Leu Leu Phe
Phe Gly Leu Ser Leu Gly -15 -10 -5 -1 Pro Arg Thr Arg Val Gln Ala
Glu Asn Leu Pro Lys Pro Ile Leu Trp 1 5 10 15 Ala Glu Pro Gly Pro
Val Ile Thr Trp His Asn Pro Val Thr Ile Trp 20 25 30 Cys Gln Gly
Thr Leu Glu Ala Gln Gly Tyr Arg Leu Asp Lys Glu Gly 35 40 45 Asn
Ser Met Ser Arg His Ile Leu Lys Thr Leu Glu Ser Glu Asn Lys 50 55
60 Val Lys Leu Ser Ile Pro Ser Met Met Trp Glu His Ala Gly Arg Tyr
65 70 75 80 His Cys Tyr Tyr Gln Ser Pro Ala Gly Trp Ser Glu Pro Ser
Asp Pro 85 90 95 Leu Glu Leu Val Val Thr Ala Tyr Ser Arg Pro Thr
Leu Ser Ala Leu 100 105 110 Pro Ser Pro Val Val Thr Ser Gly Val Asn
Val Thr Leu Arg Cys Ala 115 120 125 Ser Arg Leu Gly Leu Gly Arg Phe
Thr Leu Ile Glu Glu Gly Asp His 130 135 140 Arg Leu Ser Trp Thr Leu
Asn Ser His Gln His Asn His Gly Lys Phe 145 150 155 160 Gln Ala Leu
Phe Pro Met Gly Pro Leu Thr Phe Ser Asn Arg Gly Thr 165 170 175 Phe
Arg Cys Tyr Gly Tyr Glu Asn Asn Thr Pro Tyr Val Trp Ser Glu 180 185
190 Pro Ser Asp Pro Leu Gln Leu Leu Val Ser Gly Val Ser Arg Lys Pro
195 200 205 Ser Leu Leu Thr Leu Gln Gly Pro Val Val Thr Pro Gly Glu
Asn Leu 210 215 220 Thr Leu Gln Cys Gly Ser Asp Val Gly Tyr Ile Arg
Tyr Thr Leu Tyr 225 230 235 240 Lys Glu Gly Ala Asp Gly Leu Pro Gln
Arg Pro Gly Arg Gln Pro Gln 245 250 255 Ala Gly Leu Ser Gln Ala Asn
Phe Thr Leu Ser Pro Val Ser Arg Ser 260 265 270 Tyr Gly Gly Gln Tyr
Arg Cys Tyr Gly Ala His Asn Val Ser Ser Glu 275 280 285 Trp Ser Ala
Pro Ser Asp Pro Leu Asp Ile Leu Ile Ala Gly Gln Ile 290 295 300 Ser
Asp Arg Pro Ser Leu Ser Val Gln Pro Gly Pro Thr Val Thr Ser 305 310
315 320 Gly Glu Lys Val Thr Leu Leu Cys Gln Ser Trp Asp Pro Met Phe
Thr 325 330 335 Phe Leu Leu Thr Lys Glu Gly Ala Ala His Pro Pro Leu
Arg Leu Arg 340 345 350 Ser Met Tyr Gly Ala His Lys Tyr Gln Ala Glu
Phe Pro Met Ser Pro 355 360 365 Val Thr Ser Ala His Ala Gly Thr Tyr
Arg Cys Tyr Gly Ser Arg Ser 370 375 380 Ser Asn Pro Tyr Leu Leu Ser
His Pro Ser Glu Pro Leu Glu Leu Val 385 390 395 400 Val Ser Gly Ala
Thr Glu Thr Leu Asn Pro Ala Gln Lys Lys Ser Asp 405 410 415 Ser Lys
Thr Ala Pro His Leu Gln Asp Tyr Thr Val Glu Asn Leu Ile 420 425 430
Arg Met Gly Val Ala Gly Leu Val Leu Leu Phe Leu Gly Ile Leu Leu 435
440 445 Phe Glu Ala Gln His Ser Gln Arg Ser Pro Pro Arg Cys Ser Gln
Glu 450 455 460 Ala Asn Ser Arg Lys Asp Asn Ala Pro Phe Arg Val Val
Glu Pro Trp 465 470 475 480 Glu Gln Ile 321DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
3ctccaacccc tacctgctgt c 21421DNAArtificial SequenceDescription of
Artificial Sequence Synthetic primer 4ttcccaaggc tccaccactc t
21523DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 5cctcaatcca gcacaaaaga agt 23624DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
6cggatgagat tctccactgt gtaa 24718DNAArtificial SequenceDescription
of Artificial Sequence Synthetic primer 7ccacccatgg caaattcc
18822DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 8tgggatttcc attgatgaca ag 22921DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
9cagggccagg aggaggagat g 211021DNAArtificial SequenceDescription of
Artificial Sequence Synthetic primer 10tcagcagaca cttccccaac t
2111105DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 11ccgctcgaga tgaccctcat tctcacaagc ctgctcttct
ttgggctgag cctgggcgat 60tacaaggatg acgacgataa gcccaggacc cgggtgcagg
cagaa 1051231DNAArtificial SequenceDescription of Artificial
Sequence Synthetic primer 12ctagactagt tcagatctgt tcccaaggct c
311330DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 13ccgctcgaga tgaccctcat tctcacaagc
301455DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 14ctagactagt tcacttatcg tcgtcatcct tgtaatcgat
ctgttcccaa ggctc 5515313DNAHomo sapiensCDS(7)..(264) 15cccaag atg
att cca gca gtg gtc ttg ctc tta ctc ctt ttg gtt gaa 48 Met Ile Pro
Ala Val Val Leu Leu Leu Leu Leu Leu Val Glu 1 5 10 caa gca gcg gcc
ctg gga gag cct cag ctc tgc tat atc ctg gat gcc 96Gln Ala Ala Ala
Leu Gly Glu Pro Gln Leu Cys Tyr Ile Leu Asp Ala 15 20 25 30 atc ctg
ttt ctg tat gga att gtc ctc acc ctc ctc tac tgt cga ctg 144Ile Leu
Phe Leu Tyr Gly Ile Val Leu Thr Leu Leu Tyr Cys Arg Leu 35 40 45
aag atc caa gtg cga aag gca gct ata acc agc tat gag aaa tca gat
192Lys Ile Gln Val Arg Lys Ala Ala Ile Thr Ser Tyr Glu Lys Ser Asp
50 55 60 ggt gtt tac acg ggc ctg agc acc agg aac cag gag act tac
gag act 240Gly Val Tyr Thr Gly Leu Ser Thr Arg Asn Gln Glu Thr Tyr
Glu Thr 65 70 75 ctg aag cat gag aaa cca cca cag tagctttaga
atagatgcgg tcatattctt 294Leu Lys His Glu Lys Pro Pro Gln 80 85
ctttggcttc tggttcttc 3131686PRTHomo sapiens 16Met Ile Pro Ala Val
Val Leu Leu Leu Leu Leu Leu Val Glu Gln Ala 1 5 10 15 Ala Ala Leu
Gly Glu Pro Gln Leu Cys Tyr Ile Leu Asp Ala Ile Leu 20 25 30 Phe
Leu Tyr Gly Ile Val Leu Thr Leu Leu Tyr Cys Arg Leu Lys Ile 35 40
45 Gln Val Arg Lys Ala Ala Ile Thr Ser Tyr Glu Lys Ser Asp Gly Val
50 55 60 Tyr Thr Gly Leu Ser Thr Arg Asn Gln Glu Thr Tyr Glu Thr
Leu Lys 65 70 75 80 His Glu Lys Pro Pro Gln 85 1721DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
17cccaagatga ttccagcagt g 211821DNAArtificial SequenceDescription
of Artificial Sequence Synthetic primer 18ggaagaacca gaagccaaag a
211930DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 19ccgctcgaga tgattccagc agtggtcttg
302061DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 20ctagactagt ctacagatcc tcttcagaga tgagtttctg
ctcctgtggt ggtttctcat 60g 612123PRTArtificial SequenceDescription
of Artificial Sequence Synthetic peptide 21Cys Ser Gln Glu Ala Asn
Ser Arg Lys Asp Asn Ala Pro Phe Arg Val 1 5 10 15 Val Glu Pro Trp
Glu Gln Ile 20 2231DNAArtificial SequenceDescription of Artificial
Sequence Synthetic primer 22ccgctcgaga tgacccccat cctcacggtc c
312355DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 23ctagactagt tcacttatcg tcgtcatcct tgtaatccct
cccggctgca tcttg 55241425DNAHomo sapiensCDS(1)..(1422) 24atg acc
ccc atc ctc acg gtc ctg atc tgt ctc ggg ctg agt ctg ggc 48Met Thr
Pro Ile Leu Thr Val Leu Ile Cys Leu Gly Leu Ser Leu Gly 1 5 10 15
ccc agg acc cac gtg cag gca ggg cac ctc ccc aag ccc acc ctc tgg
96Pro Arg Thr His Val Gln Ala Gly His Leu Pro Lys Pro Thr Leu Trp
20 25 30 gct gag cca ggc tct gtg atc atc cag gga agt cct gtg acc
ctc agg 144Ala Glu Pro Gly Ser Val Ile Ile Gln Gly Ser Pro Val Thr
Leu Arg 35 40 45 tgt cag ggg agc ctt cag gct gag gag tac cat cta
tat agg gaa aac 192Cys Gln Gly Ser Leu Gln Ala Glu Glu Tyr His Leu
Tyr Arg Glu Asn 50 55 60 aaa tca gca tcc tgg gtt aga cgg ata caa
gag cct ggg aag aat ggc 240Lys Ser Ala Ser Trp Val Arg Arg Ile Gln
Glu Pro Gly Lys Asn Gly 65 70 75 80 cag ttc ccc atc cca tcc atc acc
tgg gaa cac gca ggg cgg tat cac 288Gln Phe Pro Ile Pro Ser Ile Thr
Trp Glu His Ala Gly Arg Tyr His 85 90 95 tgt cag tac tac agc cac
aat cac tca tca gag tac agt gac ccc ctg 336Cys Gln Tyr Tyr Ser His
Asn His Ser Ser Glu Tyr Ser Asp Pro Leu 100 105 110 gag ctg gtg gtg
aca gga gcc tac agc aaa ccc acc ctc tca gct ctg 384Glu Leu Val Val
Thr Gly Ala Tyr Ser Lys Pro Thr Leu Ser Ala Leu 115 120
125 ccc agc cct gtg gtg acc tta gga ggg aac gtg acc ctc cag tgt gtc
432Pro Ser Pro Val Val Thr Leu Gly Gly Asn Val Thr Leu Gln Cys Val
130 135 140 tca cag gtg gca ttt gac ggc ttc att ctg tgt aag gaa gga
gaa gat 480Ser Gln Val Ala Phe Asp Gly Phe Ile Leu Cys Lys Glu Gly
Glu Asp 145 150 155 160 gaa cac cca caa cgc ctg aac tcc cat tcc cat
gcc cgt ggg tgg tcc 528Glu His Pro Gln Arg Leu Asn Ser His Ser His
Ala Arg Gly Trp Ser 165 170 175 tgg gcc atc ttc tcc gtg ggc ccc gtg
agc ccg agt cgc agg tgg tcg 576Trp Ala Ile Phe Ser Val Gly Pro Val
Ser Pro Ser Arg Arg Trp Ser 180 185 190 tac agg tgc tat gct tat gac
tcg aac tct ccc tat gtg tgg tct cta 624Tyr Arg Cys Tyr Ala Tyr Asp
Ser Asn Ser Pro Tyr Val Trp Ser Leu 195 200 205 ccc agt gat ctc ctg
gag ctc ctg gtc cca ggt gtt tct aag aag cca 672Pro Ser Asp Leu Leu
Glu Leu Leu Val Pro Gly Val Ser Lys Lys Pro 210 215 220 tca ctc tca
gtg cag cca ggt cct atg gtg gcc cct ggg gag agc ctg 720Ser Leu Ser
Val Gln Pro Gly Pro Met Val Ala Pro Gly Glu Ser Leu 225 230 235 240
acc ctc cag tgt gtc tct gat gtc ggc tac gac aga ttt gtt ctg tat
768Thr Leu Gln Cys Val Ser Asp Val Gly Tyr Asp Arg Phe Val Leu Tyr
245 250 255 aag gag gga gaa cgt gac ttc ctc cag cgc cct ggt tgg cag
ccc cag 816Lys Glu Gly Glu Arg Asp Phe Leu Gln Arg Pro Gly Trp Gln
Pro Gln 260 265 270 gct ggg ctc tcc cag gcc aac ttc acc ctg ggc cct
gtg agc ccc tcc 864Ala Gly Leu Ser Gln Ala Asn Phe Thr Leu Gly Pro
Val Ser Pro Ser 275 280 285 cac ggg ggc cag tac aga tgc tac agt gca
cac aac ctc tcc tcc gag 912His Gly Gly Gln Tyr Arg Cys Tyr Ser Ala
His Asn Leu Ser Ser Glu 290 295 300 tgg tcg gcc ccc agt gac ccc ctg
gac atc ctg atc aca gga cag ttc 960Trp Ser Ala Pro Ser Asp Pro Leu
Asp Ile Leu Ile Thr Gly Gln Phe 305 310 315 320 tat gac aga ccc tct
ctc tcg gtg cag ccg gtc ccc aca gta gcc cca 1008Tyr Asp Arg Pro Ser
Leu Ser Val Gln Pro Val Pro Thr Val Ala Pro 325 330 335 gga aag aac
gtg acc ctg ctg tgt cag tca cgg ggg cag ttc cac act 1056Gly Lys Asn
Val Thr Leu Leu Cys Gln Ser Arg Gly Gln Phe His Thr 340 345 350 ttc
ctt ctg acc aag gag ggg gca ggc cat ccc cca ctg cat ctg aga 1104Phe
Leu Leu Thr Lys Glu Gly Ala Gly His Pro Pro Leu His Leu Arg 355 360
365 tca gag cac caa gct cag cag aac cag gct gaa ttc cgc atg ggt cct
1152Ser Glu His Gln Ala Gln Gln Asn Gln Ala Glu Phe Arg Met Gly Pro
370 375 380 gtg acc tca gcc cac gtg ggg acc tac aga tgc tac agc tca
ctc agc 1200Val Thr Ser Ala His Val Gly Thr Tyr Arg Cys Tyr Ser Ser
Leu Ser 385 390 395 400 tcc aac ccc tac ctg ctg tct ctc ccc agt gac
ccc ctg gag ctc gtg 1248Ser Asn Pro Tyr Leu Leu Ser Leu Pro Ser Asp
Pro Leu Glu Leu Val 405 410 415 gtc tca gca tcc cta ggc caa cac ccc
cag gat tac aca gtg gag aat 1296Val Ser Ala Ser Leu Gly Gln His Pro
Gln Asp Tyr Thr Val Glu Asn 420 425 430 ctc atc cgc atg ggt gtg gct
ggc ttg gtc ctg gtg gtc ctc ggg att 1344Leu Ile Arg Met Gly Val Ala
Gly Leu Val Leu Val Val Leu Gly Ile 435 440 445 ctg cta ttt gag gct
cag cac agc cag aga agc cta caa gat gca gcc 1392Leu Leu Phe Glu Ala
Gln His Ser Gln Arg Ser Leu Gln Asp Ala Ala 450 455 460 ggg agg gat
tac aag gat gac gac gat aag tga 1425Gly Arg Asp Tyr Lys Asp Asp Asp
Asp Lys 465 470 25474PRTHomo sapiens 25Met Thr Pro Ile Leu Thr Val
Leu Ile Cys Leu Gly Leu Ser Leu Gly 1 5 10 15 Pro Arg Thr His Val
Gln Ala Gly His Leu Pro Lys Pro Thr Leu Trp 20 25 30 Ala Glu Pro
Gly Ser Val Ile Ile Gln Gly Ser Pro Val Thr Leu Arg 35 40 45 Cys
Gln Gly Ser Leu Gln Ala Glu Glu Tyr His Leu Tyr Arg Glu Asn 50 55
60 Lys Ser Ala Ser Trp Val Arg Arg Ile Gln Glu Pro Gly Lys Asn Gly
65 70 75 80 Gln Phe Pro Ile Pro Ser Ile Thr Trp Glu His Ala Gly Arg
Tyr His 85 90 95 Cys Gln Tyr Tyr Ser His Asn His Ser Ser Glu Tyr
Ser Asp Pro Leu 100 105 110 Glu Leu Val Val Thr Gly Ala Tyr Ser Lys
Pro Thr Leu Ser Ala Leu 115 120 125 Pro Ser Pro Val Val Thr Leu Gly
Gly Asn Val Thr Leu Gln Cys Val 130 135 140 Ser Gln Val Ala Phe Asp
Gly Phe Ile Leu Cys Lys Glu Gly Glu Asp 145 150 155 160 Glu His Pro
Gln Arg Leu Asn Ser His Ser His Ala Arg Gly Trp Ser 165 170 175 Trp
Ala Ile Phe Ser Val Gly Pro Val Ser Pro Ser Arg Arg Trp Ser 180 185
190 Tyr Arg Cys Tyr Ala Tyr Asp Ser Asn Ser Pro Tyr Val Trp Ser Leu
195 200 205 Pro Ser Asp Leu Leu Glu Leu Leu Val Pro Gly Val Ser Lys
Lys Pro 210 215 220 Ser Leu Ser Val Gln Pro Gly Pro Met Val Ala Pro
Gly Glu Ser Leu 225 230 235 240 Thr Leu Gln Cys Val Ser Asp Val Gly
Tyr Asp Arg Phe Val Leu Tyr 245 250 255 Lys Glu Gly Glu Arg Asp Phe
Leu Gln Arg Pro Gly Trp Gln Pro Gln 260 265 270 Ala Gly Leu Ser Gln
Ala Asn Phe Thr Leu Gly Pro Val Ser Pro Ser 275 280 285 His Gly Gly
Gln Tyr Arg Cys Tyr Ser Ala His Asn Leu Ser Ser Glu 290 295 300 Trp
Ser Ala Pro Ser Asp Pro Leu Asp Ile Leu Ile Thr Gly Gln Phe 305 310
315 320 Tyr Asp Arg Pro Ser Leu Ser Val Gln Pro Val Pro Thr Val Ala
Pro 325 330 335 Gly Lys Asn Val Thr Leu Leu Cys Gln Ser Arg Gly Gln
Phe His Thr 340 345 350 Phe Leu Leu Thr Lys Glu Gly Ala Gly His Pro
Pro Leu His Leu Arg 355 360 365 Ser Glu His Gln Ala Gln Gln Asn Gln
Ala Glu Phe Arg Met Gly Pro 370 375 380 Val Thr Ser Ala His Val Gly
Thr Tyr Arg Cys Tyr Ser Ser Leu Ser 385 390 395 400 Ser Asn Pro Tyr
Leu Leu Ser Leu Pro Ser Asp Pro Leu Glu Leu Val 405 410 415 Val Ser
Ala Ser Leu Gly Gln His Pro Gln Asp Tyr Thr Val Glu Asn 420 425 430
Leu Ile Arg Met Gly Val Ala Gly Leu Val Leu Val Val Leu Gly Ile 435
440 445 Leu Leu Phe Glu Ala Gln His Ser Gln Arg Ser Leu Gln Asp Ala
Ala 450 455 460 Gly Arg Asp Tyr Lys Asp Asp Asp Asp Lys 465 470
261953DNAHomo sapiensCDS(1)..(1950) 26atg acc ccc atc ctc acg gtc
ctg atc tgt ctc ggg ctg agt ctg ggc 48Met Thr Pro Ile Leu Thr Val
Leu Ile Cys Leu Gly Leu Ser Leu Gly 1 5 10 15 ccc cgg acc cac gtg
cag gca ggg cac ctc ccc aag ccc acc ctc tgg 96Pro Arg Thr His Val
Gln Ala Gly His Leu Pro Lys Pro Thr Leu Trp 20 25 30 gct gaa cca
ggc tct gtg atc acc cag ggg agt cct gtg acc ctc agg 144Ala Glu Pro
Gly Ser Val Ile Thr Gln Gly Ser Pro Val Thr Leu Arg 35 40 45 tgt
cag ggg ggc cag gag acc cag gag tac cgt cta tat aga gaa aag 192Cys
Gln Gly Gly Gln Glu Thr Gln Glu Tyr Arg Leu Tyr Arg Glu Lys 50 55
60 aaa aca gca ccc tgg att aca cgg atc cca cag gag ctt gtg aag aag
240Lys Thr Ala Pro Trp Ile Thr Arg Ile Pro Gln Glu Leu Val Lys Lys
65 70 75 80 ggc cag ttc ccc atc cca tcc atc acc tgg gaa cat gca ggg
cgg tat 288Gly Gln Phe Pro Ile Pro Ser Ile Thr Trp Glu His Ala Gly
Arg Tyr 85 90 95 cgc tgt tac tat ggt agc gac act gca ggc cgc tca
gag agc agt gac 336Arg Cys Tyr Tyr Gly Ser Asp Thr Ala Gly Arg Ser
Glu Ser Ser Asp 100 105 110 ccc ctg gag ctg gtg gtg aca gga gcc tac
atc aaa ccc acc ctc tca 384Pro Leu Glu Leu Val Val Thr Gly Ala Tyr
Ile Lys Pro Thr Leu Ser 115 120 125 gcc cag ccc agc ccc gtg gtg aac
tca gga ggg aat gta acc ctc cag 432Ala Gln Pro Ser Pro Val Val Asn
Ser Gly Gly Asn Val Thr Leu Gln 130 135 140 tgt gac tca cag gtg gca
ttt gat ggc ttc att ctg tgt aag gaa gga 480Cys Asp Ser Gln Val Ala
Phe Asp Gly Phe Ile Leu Cys Lys Glu Gly 145 150 155 160 gaa gat gaa
cac cca caa tgc ctg aac tcc cag ccc cat gcc cgt ggg 528Glu Asp Glu
His Pro Gln Cys Leu Asn Ser Gln Pro His Ala Arg Gly 165 170 175 tcg
tcc cgc gcc atc ttc tcc gtg ggc ccc gtg agc ccg agt cgc agg 576Ser
Ser Arg Ala Ile Phe Ser Val Gly Pro Val Ser Pro Ser Arg Arg 180 185
190 tgg tgg tac agg tgc tat gct tat gac tcg aac tct ccc tat gag tgg
624Trp Trp Tyr Arg Cys Tyr Ala Tyr Asp Ser Asn Ser Pro Tyr Glu Trp
195 200 205 tct cta ccc agt gat ctc ctg gag ctc ctg gtc cta ggt gtt
tct aag 672Ser Leu Pro Ser Asp Leu Leu Glu Leu Leu Val Leu Gly Val
Ser Lys 210 215 220 aag cca tca ctc tca gtg cag cca ggt cct atc gtg
gcc cct gag gag 720Lys Pro Ser Leu Ser Val Gln Pro Gly Pro Ile Val
Ala Pro Glu Glu 225 230 235 240 acc ctg act ctg cag tgt ggc tct gat
gct ggc tac aac aga ttt gtt 768Thr Leu Thr Leu Gln Cys Gly Ser Asp
Ala Gly Tyr Asn Arg Phe Val 245 250 255 ctg tat aag gac ggg gaa cgt
gac ttc ctt cag ctc gct ggc gca cag 816Leu Tyr Lys Asp Gly Glu Arg
Asp Phe Leu Gln Leu Ala Gly Ala Gln 260 265 270 ccc cag gct ggg ctc
tcc cag gcc aac ttc acc ctg ggc cct gtg agc 864Pro Gln Ala Gly Leu
Ser Gln Ala Asn Phe Thr Leu Gly Pro Val Ser 275 280 285 cgc tcc tac
ggg ggc cag tac aga tgc tac ggt gca cac aac ctc tcc 912Arg Ser Tyr
Gly Gly Gln Tyr Arg Cys Tyr Gly Ala His Asn Leu Ser 290 295 300 tcc
gag tgg tcg gcc ccc agc gac ccc ctg gac atc ctg atc gca gga 960Ser
Glu Trp Ser Ala Pro Ser Asp Pro Leu Asp Ile Leu Ile Ala Gly 305 310
315 320 cag ttc tat gac aga gtc tcc ctc tcg gtg cag ccg ggc ccc acg
gtg 1008Gln Phe Tyr Asp Arg Val Ser Leu Ser Val Gln Pro Gly Pro Thr
Val 325 330 335 gcc tca gga gag aac gtg acc ctg ctg tgt cag tca cag
gga tgg atg 1056Ala Ser Gly Glu Asn Val Thr Leu Leu Cys Gln Ser Gln
Gly Trp Met 340 345 350 caa act ttc ctt ctg acc aag gag ggg gca gct
gat gac cca tgg cgt 1104Gln Thr Phe Leu Leu Thr Lys Glu Gly Ala Ala
Asp Asp Pro Trp Arg 355 360 365 cta aga tca acg tac caa tct caa aaa
tac cag gct gaa ttc ccc atg 1152Leu Arg Ser Thr Tyr Gln Ser Gln Lys
Tyr Gln Ala Glu Phe Pro Met 370 375 380 ggt cct gtg acc tca gcc cat
gcg ggg acc tac agg tgc tac ggc tca 1200Gly Pro Val Thr Ser Ala His
Ala Gly Thr Tyr Arg Cys Tyr Gly Ser 385 390 395 400 cag agc tcc aaa
ccc tac ctg ctg act cac ccc agt gac ccc ctg gag 1248Gln Ser Ser Lys
Pro Tyr Leu Leu Thr His Pro Ser Asp Pro Leu Glu 405 410 415 ctc gtg
gtc tca gga ccg tct ggg ggc ccc agc tcc ccg aca aca ggc 1296Leu Val
Val Ser Gly Pro Ser Gly Gly Pro Ser Ser Pro Thr Thr Gly 420 425 430
ccc acc tcc aca tct ggc cct gag gac cag ccc ctc acc ccc acc ggg
1344Pro Thr Ser Thr Ser Gly Pro Glu Asp Gln Pro Leu Thr Pro Thr Gly
435 440 445 tcg gat ccc cag agt ggt ctg gga agg cac ctg ggg gtt gtg
atc ggc 1392Ser Asp Pro Gln Ser Gly Leu Gly Arg His Leu Gly Val Val
Ile Gly 450 455 460 atc ttg gtg gcc gtc atc cta ctg ctc ctc ctc ctc
ctc ctc ctc ttc 1440Ile Leu Val Ala Val Ile Leu Leu Leu Leu Leu Leu
Leu Leu Leu Phe 465 470 475 480 ctc atc ctc cga cat cga cgt cag ggc
aaa cac tgg aca tcg acc cag 1488Leu Ile Leu Arg His Arg Arg Gln Gly
Lys His Trp Thr Ser Thr Gln 485 490 495 aga aag gct gat ttc caa cat
cct gca ggg gct gtg ggg cca gag ccc 1536Arg Lys Ala Asp Phe Gln His
Pro Ala Gly Ala Val Gly Pro Glu Pro 500 505 510 aca gac aga ggc ctg
cag tgg agg tcc agc cca gct gcc gat gcc cag 1584Thr Asp Arg Gly Leu
Gln Trp Arg Ser Ser Pro Ala Ala Asp Ala Gln 515 520 525 gaa gaa aac
ctc tat gct gcc gtg aag cac aca cag cct gag gat ggg 1632Glu Glu Asn
Leu Tyr Ala Ala Val Lys His Thr Gln Pro Glu Asp Gly 530 535 540 gtg
gag atg gac act cgg agc cca cac gat gaa gac ccc cag gca gtg 1680Val
Glu Met Asp Thr Arg Ser Pro His Asp Glu Asp Pro Gln Ala Val 545 550
555 560 acg tat gcc gag gtg aaa cac tcc aga cct agg aga gaa atg gcc
tct 1728Thr Tyr Ala Glu Val Lys His Ser Arg Pro Arg Arg Glu Met Ala
Ser 565 570 575 cct cct tcc cca ctg tct ggg gaa ttc ctg gac aca aag
gac aga cag 1776Pro Pro Ser Pro Leu Ser Gly Glu Phe Leu Asp Thr Lys
Asp Arg Gln 580 585 590 gcg gaa gag gac agg cag atg gac act gag gct
gct gca tct gaa gcc 1824Ala Glu Glu Asp Arg Gln Met Asp Thr Glu Ala
Ala Ala Ser Glu Ala 595 600 605 ccc cag gat gtg acc tac gcc cag ctg
cac agc ttg acc ctt aga cgg 1872Pro Gln Asp Val Thr Tyr Ala Gln Leu
His Ser Leu Thr Leu Arg Arg 610 615 620 aag gca act gag cct cct cca
tcc cag gaa ggg ccc tct cca gct gtg 1920Lys Ala Thr Glu Pro Pro Pro
Ser Gln Glu Gly Pro Ser Pro Ala Val 625 630 635 640 ccc agc atc tac
gcc act ctg gcc atc cac tag 1953Pro Ser Ile Tyr Ala Thr Leu Ala Ile
His 645 650 27650PRTHomo sapiens 27Met Thr Pro Ile Leu Thr Val Leu
Ile Cys Leu Gly Leu Ser Leu Gly 1 5 10 15 Pro Arg Thr His Val Gln
Ala Gly His Leu Pro Lys Pro Thr Leu Trp 20 25 30 Ala Glu Pro Gly
Ser Val Ile Thr Gln Gly Ser Pro Val Thr Leu Arg 35 40 45 Cys Gln
Gly Gly Gln Glu Thr Gln Glu Tyr Arg Leu Tyr Arg Glu Lys 50 55 60
Lys Thr Ala Pro Trp Ile Thr Arg Ile Pro Gln Glu Leu Val Lys Lys 65
70 75 80 Gly Gln Phe Pro Ile Pro Ser Ile Thr Trp Glu His Ala Gly
Arg Tyr
85 90 95 Arg Cys Tyr Tyr Gly Ser Asp Thr Ala Gly Arg Ser Glu Ser
Ser Asp 100 105 110 Pro Leu Glu Leu Val Val Thr Gly Ala Tyr Ile Lys
Pro Thr Leu Ser 115 120 125 Ala Gln Pro Ser Pro Val Val Asn Ser Gly
Gly Asn Val Thr Leu Gln 130 135 140 Cys Asp Ser Gln Val Ala Phe Asp
Gly Phe Ile Leu Cys Lys Glu Gly 145 150 155 160 Glu Asp Glu His Pro
Gln Cys Leu Asn Ser Gln Pro His Ala Arg Gly 165 170 175 Ser Ser Arg
Ala Ile Phe Ser Val Gly Pro Val Ser Pro Ser Arg Arg 180 185 190 Trp
Trp Tyr Arg Cys Tyr Ala Tyr Asp Ser Asn Ser Pro Tyr Glu Trp 195 200
205 Ser Leu Pro Ser Asp Leu Leu Glu Leu Leu Val Leu Gly Val Ser Lys
210 215 220 Lys Pro Ser Leu Ser Val Gln Pro Gly Pro Ile Val Ala Pro
Glu Glu 225 230 235 240 Thr Leu Thr Leu Gln Cys Gly Ser Asp Ala Gly
Tyr Asn Arg Phe Val 245 250 255 Leu Tyr Lys Asp Gly Glu Arg Asp Phe
Leu Gln Leu Ala Gly Ala Gln 260 265 270 Pro Gln Ala Gly Leu Ser Gln
Ala Asn Phe Thr Leu Gly Pro Val Ser 275 280 285 Arg Ser Tyr Gly Gly
Gln Tyr Arg Cys Tyr Gly Ala His Asn Leu Ser 290 295 300 Ser Glu Trp
Ser Ala Pro Ser Asp Pro Leu Asp Ile Leu Ile Ala Gly 305 310 315 320
Gln Phe Tyr Asp Arg Val Ser Leu Ser Val Gln Pro Gly Pro Thr Val 325
330 335 Ala Ser Gly Glu Asn Val Thr Leu Leu Cys Gln Ser Gln Gly Trp
Met 340 345 350 Gln Thr Phe Leu Leu Thr Lys Glu Gly Ala Ala Asp Asp
Pro Trp Arg 355 360 365 Leu Arg Ser Thr Tyr Gln Ser Gln Lys Tyr Gln
Ala Glu Phe Pro Met 370 375 380 Gly Pro Val Thr Ser Ala His Ala Gly
Thr Tyr Arg Cys Tyr Gly Ser 385 390 395 400 Gln Ser Ser Lys Pro Tyr
Leu Leu Thr His Pro Ser Asp Pro Leu Glu 405 410 415 Leu Val Val Ser
Gly Pro Ser Gly Gly Pro Ser Ser Pro Thr Thr Gly 420 425 430 Pro Thr
Ser Thr Ser Gly Pro Glu Asp Gln Pro Leu Thr Pro Thr Gly 435 440 445
Ser Asp Pro Gln Ser Gly Leu Gly Arg His Leu Gly Val Val Ile Gly 450
455 460 Ile Leu Val Ala Val Ile Leu Leu Leu Leu Leu Leu Leu Leu Leu
Phe 465 470 475 480 Leu Ile Leu Arg His Arg Arg Gln Gly Lys His Trp
Thr Ser Thr Gln 485 490 495 Arg Lys Ala Asp Phe Gln His Pro Ala Gly
Ala Val Gly Pro Glu Pro 500 505 510 Thr Asp Arg Gly Leu Gln Trp Arg
Ser Ser Pro Ala Ala Asp Ala Gln 515 520 525 Glu Glu Asn Leu Tyr Ala
Ala Val Lys His Thr Gln Pro Glu Asp Gly 530 535 540 Val Glu Met Asp
Thr Arg Ser Pro His Asp Glu Asp Pro Gln Ala Val 545 550 555 560 Thr
Tyr Ala Glu Val Lys His Ser Arg Pro Arg Arg Glu Met Ala Ser 565 570
575 Pro Pro Ser Pro Leu Ser Gly Glu Phe Leu Asp Thr Lys Asp Arg Gln
580 585 590 Ala Glu Glu Asp Arg Gln Met Asp Thr Glu Ala Ala Ala Ser
Glu Ala 595 600 605 Pro Gln Asp Val Thr Tyr Ala Gln Leu His Ser Leu
Thr Leu Arg Arg 610 615 620 Lys Ala Thr Glu Pro Pro Pro Ser Gln Glu
Gly Pro Ser Pro Ala Val 625 630 635 640 Pro Ser Ile Tyr Ala Thr Leu
Ala Ile His 645 650 281347DNAHomo sapiensCDS(1)..(1344) 28atg atc
ccc acc ttc acg gct ctg ctc tgc ctc ggg ctg agt ctg ggc 48Met Ile
Pro Thr Phe Thr Ala Leu Leu Cys Leu Gly Leu Ser Leu Gly 1 5 10 15
ccc agg acc gac atg cag gca ggg ccc ctc ccc aaa ccc acc ctc tgg
96Pro Arg Thr Asp Met Gln Ala Gly Pro Leu Pro Lys Pro Thr Leu Trp
20 25 30 gct gag cca ggc tct gtg atc agc tgg ggg aac tct gtg acc
atc tgg 144Ala Glu Pro Gly Ser Val Ile Ser Trp Gly Asn Ser Val Thr
Ile Trp 35 40 45 tgt cag ggg acc ctg gag gct cgg gag tac cgt ctg
gat aaa gag gaa 192Cys Gln Gly Thr Leu Glu Ala Arg Glu Tyr Arg Leu
Asp Lys Glu Glu 50 55 60 agc cca gca ccc tgg gac aga cag aac cca
ctg gag ccc aag aac aag 240Ser Pro Ala Pro Trp Asp Arg Gln Asn Pro
Leu Glu Pro Lys Asn Lys 65 70 75 80 gcc aga ttc tcc atc cca tcc atg
aca gag gac tat gca ggg aga tac 288Ala Arg Phe Ser Ile Pro Ser Met
Thr Glu Asp Tyr Ala Gly Arg Tyr 85 90 95 cgc tgt tac tat cgc agc
cct gta ggc tgg tca cag ccc agt gac ccc 336Arg Cys Tyr Tyr Arg Ser
Pro Val Gly Trp Ser Gln Pro Ser Asp Pro 100 105 110 ctg gag ctg gtg
atg aca gga gcc tac agt aaa ccc acc ctt tca gcc 384Leu Glu Leu Val
Met Thr Gly Ala Tyr Ser Lys Pro Thr Leu Ser Ala 115 120 125 ctg ccg
agt cct ctt gtg acc tca gga aag agc gtg acc ctg ctg tgt 432Leu Pro
Ser Pro Leu Val Thr Ser Gly Lys Ser Val Thr Leu Leu Cys 130 135 140
cag tca cgg agc cca atg gac act ttc ctt ctg atc aag gag cgg gca
480Gln Ser Arg Ser Pro Met Asp Thr Phe Leu Leu Ile Lys Glu Arg Ala
145 150 155 160 gcc cat ccc cta ctg cat ctg aga tca gag cac gga gct
cag cag cac 528Ala His Pro Leu Leu His Leu Arg Ser Glu His Gly Ala
Gln Gln His 165 170 175 cag gct gaa ttc ccc atg agt cct gtg acc tca
gtg cac ggg ggg acc 576Gln Ala Glu Phe Pro Met Ser Pro Val Thr Ser
Val His Gly Gly Thr 180 185 190 tac agg tgc ttc agc tca cac ggc ttc
tcc cac tac ctg ctg tca cac 624Tyr Arg Cys Phe Ser Ser His Gly Phe
Ser His Tyr Leu Leu Ser His 195 200 205 ccc agt gac ccc ctg gag ctc
ata gtc tca gga tcc ttg gag ggt ccc 672Pro Ser Asp Pro Leu Glu Leu
Ile Val Ser Gly Ser Leu Glu Gly Pro 210 215 220 agg ccc tca ccc aca
agg tcc gtc tca aca gct gca ggc cct gag gac 720Arg Pro Ser Pro Thr
Arg Ser Val Ser Thr Ala Ala Gly Pro Glu Asp 225 230 235 240 cag ccc
ctc atg cct aca ggg tca gtc ccc cac agt ggt ctg aga agg 768Gln Pro
Leu Met Pro Thr Gly Ser Val Pro His Ser Gly Leu Arg Arg 245 250 255
cac tgg gag gta ctg atc ggg gtc ttg gtg gtc tcc atc ctg ctt ctc
816His Trp Glu Val Leu Ile Gly Val Leu Val Val Ser Ile Leu Leu Leu
260 265 270 tcc ctc ctc ctc ttc ctc ctc ctc caa cac tgg cgt cag gga
aaa cac 864Ser Leu Leu Leu Phe Leu Leu Leu Gln His Trp Arg Gln Gly
Lys His 275 280 285 agg aca ttg gcc cag aga cag gct gat ttc caa cgt
cct cca ggg gct 912Arg Thr Leu Ala Gln Arg Gln Ala Asp Phe Gln Arg
Pro Pro Gly Ala 290 295 300 gcc gag cca gag ccc aag gac ggg ggc cta
cag agg agg tcc agc cca 960Ala Glu Pro Glu Pro Lys Asp Gly Gly Leu
Gln Arg Arg Ser Ser Pro 305 310 315 320 gct gct gac gtc cag gga gaa
aac ttc tgt gct gcc gtg aag aac aca 1008Ala Ala Asp Val Gln Gly Glu
Asn Phe Cys Ala Ala Val Lys Asn Thr 325 330 335 cag cct gag gac ggg
gtg gaa atg gac act cgg cag agc cca cac gat 1056Gln Pro Glu Asp Gly
Val Glu Met Asp Thr Arg Gln Ser Pro His Asp 340 345 350 gaa gac ccc
cag gca gtg acg tat gcc aag gtg aaa cac tcc aga cct 1104Glu Asp Pro
Gln Ala Val Thr Tyr Ala Lys Val Lys His Ser Arg Pro 355 360 365 agg
aga gaa atg gcc tct cct ccc tcc cca ctg tct ggg gaa ttc ctg 1152Arg
Arg Glu Met Ala Ser Pro Pro Ser Pro Leu Ser Gly Glu Phe Leu 370 375
380 gac aca aag gac aga cag gca gaa gag gac aga cag atg gac act gag
1200Asp Thr Lys Asp Arg Gln Ala Glu Glu Asp Arg Gln Met Asp Thr Glu
385 390 395 400 gct gct gca tct gaa gcc ccc cag gat gtg acc tac gcc
cgg ctg cac 1248Ala Ala Ala Ser Glu Ala Pro Gln Asp Val Thr Tyr Ala
Arg Leu His 405 410 415 agc ttt acc ctc aga cag aag gca act gag cct
cct cca tcc cag gaa 1296Ser Phe Thr Leu Arg Gln Lys Ala Thr Glu Pro
Pro Pro Ser Gln Glu 420 425 430 ggg gcc tct cca gct gag ccc agt gtc
tat gcc act ctg gcc atc cac 1344Gly Ala Ser Pro Ala Glu Pro Ser Val
Tyr Ala Thr Leu Ala Ile His 435 440 445 taa 1347 29448PRTHomo
sapiens 29Met Ile Pro Thr Phe Thr Ala Leu Leu Cys Leu Gly Leu Ser
Leu Gly 1 5 10 15 Pro Arg Thr Asp Met Gln Ala Gly Pro Leu Pro Lys
Pro Thr Leu Trp 20 25 30 Ala Glu Pro Gly Ser Val Ile Ser Trp Gly
Asn Ser Val Thr Ile Trp 35 40 45 Cys Gln Gly Thr Leu Glu Ala Arg
Glu Tyr Arg Leu Asp Lys Glu Glu 50 55 60 Ser Pro Ala Pro Trp Asp
Arg Gln Asn Pro Leu Glu Pro Lys Asn Lys 65 70 75 80 Ala Arg Phe Ser
Ile Pro Ser Met Thr Glu Asp Tyr Ala Gly Arg Tyr 85 90 95 Arg Cys
Tyr Tyr Arg Ser Pro Val Gly Trp Ser Gln Pro Ser Asp Pro 100 105 110
Leu Glu Leu Val Met Thr Gly Ala Tyr Ser Lys Pro Thr Leu Ser Ala 115
120 125 Leu Pro Ser Pro Leu Val Thr Ser Gly Lys Ser Val Thr Leu Leu
Cys 130 135 140 Gln Ser Arg Ser Pro Met Asp Thr Phe Leu Leu Ile Lys
Glu Arg Ala 145 150 155 160 Ala His Pro Leu Leu His Leu Arg Ser Glu
His Gly Ala Gln Gln His 165 170 175 Gln Ala Glu Phe Pro Met Ser Pro
Val Thr Ser Val His Gly Gly Thr 180 185 190 Tyr Arg Cys Phe Ser Ser
His Gly Phe Ser His Tyr Leu Leu Ser His 195 200 205 Pro Ser Asp Pro
Leu Glu Leu Ile Val Ser Gly Ser Leu Glu Gly Pro 210 215 220 Arg Pro
Ser Pro Thr Arg Ser Val Ser Thr Ala Ala Gly Pro Glu Asp 225 230 235
240 Gln Pro Leu Met Pro Thr Gly Ser Val Pro His Ser Gly Leu Arg Arg
245 250 255 His Trp Glu Val Leu Ile Gly Val Leu Val Val Ser Ile Leu
Leu Leu 260 265 270 Ser Leu Leu Leu Phe Leu Leu Leu Gln His Trp Arg
Gln Gly Lys His 275 280 285 Arg Thr Leu Ala Gln Arg Gln Ala Asp Phe
Gln Arg Pro Pro Gly Ala 290 295 300 Ala Glu Pro Glu Pro Lys Asp Gly
Gly Leu Gln Arg Arg Ser Ser Pro 305 310 315 320 Ala Ala Asp Val Gln
Gly Glu Asn Phe Cys Ala Ala Val Lys Asn Thr 325 330 335 Gln Pro Glu
Asp Gly Val Glu Met Asp Thr Arg Gln Ser Pro His Asp 340 345 350 Glu
Asp Pro Gln Ala Val Thr Tyr Ala Lys Val Lys His Ser Arg Pro 355 360
365 Arg Arg Glu Met Ala Ser Pro Pro Ser Pro Leu Ser Gly Glu Phe Leu
370 375 380 Asp Thr Lys Asp Arg Gln Ala Glu Glu Asp Arg Gln Met Asp
Thr Glu 385 390 395 400 Ala Ala Ala Ser Glu Ala Pro Gln Asp Val Thr
Tyr Ala Arg Leu His 405 410 415 Ser Phe Thr Leu Arg Gln Lys Ala Thr
Glu Pro Pro Pro Ser Gln Glu 420 425 430 Gly Ala Ser Pro Ala Glu Pro
Ser Val Tyr Ala Thr Leu Ala Ile His 435 440 445 3024DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
30ccatagttcc attttacagt tacc 243120DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
31gggaccaagg gatagacaga 203224DNAArtificial SequenceDescription of
Artificial Sequence Synthetic primer 32tccagagttc caggtcaagg tcac
243320DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 33gccagtggat agaccgatgg 203436DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
34ggccacgcgt cgactagtac gggnngggnn gggnng 363520DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
35ggccacgcgt cgactagtac 203624DNAArtificial SequenceDescription of
Artificial Sequence Synthetic primer 36ttcactgcca tcaatcttcc actt
243721DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 37gatggataca gttggtgcag c 2138408DNAMus
musculusCDS(1)..(408)sig_peptide(1)..(54)mat_peptide(55)..(408)
38atg aga gtg ctg att ctt ttg tgg ctg ttc aca gcc ttt cct ggt atc
48Met Arg Val Leu Ile Leu Leu Trp Leu Phe Thr Ala Phe Pro Gly Ile
-15 -10 -5 ctg tct gat gtg cag ctt cag gag tcg gga cct ggc ctg gtg
aaa cct 96Leu Ser Asp Val Gln Leu Gln Glu Ser Gly Pro Gly Leu Val
Lys Pro -1 1 5 10 tct cag tct ctg tcc ctc acc tgc act gtc act ggc
tac tca atc acc 144Ser Gln Ser Leu Ser Leu Thr Cys Thr Val Thr Gly
Tyr Ser Ile Thr 15 20 25 30 agt gat tat gcc tgg aac tgg atc cgg cag
ttt cca gga aac aaa ctg 192Ser Asp Tyr Ala Trp Asn Trp Ile Arg Gln
Phe Pro Gly Asn Lys Leu 35 40 45 gag tgg atg ggc tac ata agc tac
agt ggt agc act agc tac aac cca 240Glu Trp Met Gly Tyr Ile Ser Tyr
Ser Gly Ser Thr Ser Tyr Asn Pro 50 55 60 tct ctc aaa agt cga atc
tct atc act cga gac aca tcc aag aac cag 288Ser Leu Lys Ser Arg Ile
Ser Ile Thr Arg Asp Thr Ser Lys Asn Gln 65 70 75 ttc ttc ctg cag
ttg aat tct gtg act act gag gac aca gcc aca tat 336Phe Phe Leu Gln
Leu Asn Ser Val Thr Thr Glu Asp Thr Ala Thr Tyr 80 85 90 tac tgt
gca aga tct ccc cct tac tat gct atg gac tac tgg ggt caa 384Tyr Cys
Ala Arg Ser Pro Pro Tyr Tyr Ala Met Asp Tyr Trp Gly Gln 95 100 105
110 gga acc tca gtc acc gtc tcc tca 408Gly Thr Ser Val Thr Val Ser
Ser 115 39136PRTMus musculus 39Met Arg Val Leu Ile Leu Leu Trp Leu
Phe Thr Ala Phe Pro Gly Ile -15 -10 -5 Leu Ser Asp Val Gln Leu Gln
Glu Ser Gly Pro Gly Leu Val Lys Pro -1 1 5 10 Ser Gln Ser Leu Ser
Leu Thr Cys Thr Val Thr Gly Tyr Ser Ile Thr 15 20 25 30 Ser Asp Tyr
Ala Trp Asn Trp Ile Arg Gln Phe Pro Gly Asn Lys Leu 35 40 45 Glu
Trp Met Gly Tyr Ile Ser Tyr Ser Gly Ser Thr Ser Tyr Asn Pro 50 55
60 Ser Leu Lys Ser Arg Ile Ser Ile Thr Arg Asp Thr Ser Lys Asn Gln
65 70
75 Phe Phe Leu Gln Leu Asn Ser Val Thr Thr Glu Asp Thr Ala Thr Tyr
80 85 90 Tyr Cys Ala Arg Ser Pro Pro Tyr Tyr Ala Met Asp Tyr Trp
Gly Gln 95 100 105 110 Gly Thr Ser Val Thr Val Ser Ser 115
40381DNAMus
musculusCDS(1)..(381)sig_peptide(1)..(60)mat_peptide(61)..(381)
40atg gag aca cat tct cag gtc ttt gta tac atg ttg ctg tgg ttg tct
48Met Glu Thr His Ser Gln Val Phe Val Tyr Met Leu Leu Trp Leu Ser
-20 -15 -10 -5 ggt gtt gaa gga gac att gtg atg acc cag tct cac aaa
ttc atg tcc 96Gly Val Glu Gly Asp Ile Val Met Thr Gln Ser His Lys
Phe Met Ser -1 1 5 10 aca tca gta gga gac agg gtc agc atc acc tgc
aag gcc agt cag gat 144Thr Ser Val Gly Asp Arg Val Ser Ile Thr Cys
Lys Ala Ser Gln Asp 15 20 25 gtg ggt act gct gta gcc tgg tat caa
cag aaa cca ggg caa tct cct 192Val Gly Thr Ala Val Ala Trp Tyr Gln
Gln Lys Pro Gly Gln Ser Pro 30 35 40 aaa cta ctg att tac tgg gca
tcc acc cgg cac act gga gtc cct gat 240Lys Leu Leu Ile Tyr Trp Ala
Ser Thr Arg His Thr Gly Val Pro Asp 45 50 55 60 cgc ttc aca ggc agt
gga tct ggg aca gat ttc act ctc acc att agc 288Arg Phe Thr Gly Ser
Gly Ser Gly Thr Asp Phe Thr Leu Thr Ile Ser 65 70 75 aat gtg cag
tct gaa gac ttg gca gat tat ttc tgt cag caa tat agc 336Asn Val Gln
Ser Glu Asp Leu Ala Asp Tyr Phe Cys Gln Gln Tyr Ser 80 85 90 agc
tat cct ctc acg ttc ggt gct ggg acc aag ctg gag ctg aaa 381Ser Tyr
Pro Leu Thr Phe Gly Ala Gly Thr Lys Leu Glu Leu Lys 95 100 105
41127PRTMus musculus 41Met Glu Thr His Ser Gln Val Phe Val Tyr Met
Leu Leu Trp Leu Ser -20 -15 -10 -5 Gly Val Glu Gly Asp Ile Val Met
Thr Gln Ser His Lys Phe Met Ser -1 1 5 10 Thr Ser Val Gly Asp Arg
Val Ser Ile Thr Cys Lys Ala Ser Gln Asp 15 20 25 Val Gly Thr Ala
Val Ala Trp Tyr Gln Gln Lys Pro Gly Gln Ser Pro 30 35 40 Lys Leu
Leu Ile Tyr Trp Ala Ser Thr Arg His Thr Gly Val Pro Asp 45 50 55 60
Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Thr Ile Ser 65
70 75 Asn Val Gln Ser Glu Asp Leu Ala Asp Tyr Phe Cys Gln Gln Tyr
Ser 80 85 90 Ser Tyr Pro Leu Thr Phe Gly Ala Gly Thr Lys Leu Glu
Leu Lys 95 100 105 42414DNAMus
musculusCDS(1)..(414)sig_peptide(1)..(57)mat_peptide(55)..(414)
42atg gga tgg agc tgg gtc ttt ctc ttc ctc ctg tca gga act gca ggt
48Met Gly Trp Ser Trp Val Phe Leu Phe Leu Leu Ser Gly Thr Ala Gly
-15 -10 -5 gtc cac tgc cag gtc cag ctg aag cag tct gga gct gag ctg
gtg agg 96Val His Cys Gln Val Gln Leu Lys Gln Ser Gly Ala Glu Leu
Val Arg -1 1 5 10 cct ggg gct tca gtg aag ctg tcc tgc aag act tct
gga tac atc ttc 144Pro Gly Ala Ser Val Lys Leu Ser Cys Lys Thr Ser
Gly Tyr Ile Phe 15 20 25 30 acc agc tac tgg att cac tgg gta aaa cag
agg tct gga cag ggc ctt 192Thr Ser Tyr Trp Ile His Trp Val Lys Gln
Arg Ser Gly Gln Gly Leu 35 40 45 gag tgg att gca agg att tat cct
gga act ggt agt act tac tac aat 240Glu Trp Ile Ala Arg Ile Tyr Pro
Gly Thr Gly Ser Thr Tyr Tyr Asn 50 55 60 gag aag ttc aag ggc aag
gcc aca ctg act gca gac aaa tcc tcc agc 288Glu Lys Phe Lys Gly Lys
Ala Thr Leu Thr Ala Asp Lys Ser Ser Ser 65 70 75 act gcc tac atg
cag ctc agc agc ctg aaa tct gag gac tct gct gtc 336Thr Ala Tyr Met
Gln Leu Ser Ser Leu Lys Ser Glu Asp Ser Ala Val 80 85 90 tat ttc
tgt gca aga tac cct acc tac gac tgg tac ttc gat gtc tgg 384Tyr Phe
Cys Ala Arg Tyr Pro Thr Tyr Asp Trp Tyr Phe Asp Val Trp 95 100 105
110 ggc gca ggg acc acg gtc acc gtc tcc tca 414Gly Ala Gly Thr Thr
Val Thr Val Ser Ser 115 120 43138PRTMus musculus 43Met Gly Trp Ser
Trp Val Phe Leu Phe Leu Leu Ser Gly Thr Ala Gly -15 -10 -5 Val His
Cys Gln Val Gln Leu Lys Gln Ser Gly Ala Glu Leu Val Arg -1 1 5 10
Pro Gly Ala Ser Val Lys Leu Ser Cys Lys Thr Ser Gly Tyr Ile Phe 15
20 25 Thr Ser Tyr Trp Ile His Trp Val Lys Gln Arg Ser Gly Gln Gly
Leu 30 35 40 45 Glu Trp Ile Ala Arg Ile Tyr Pro Gly Thr Gly Ser Thr
Tyr Tyr Asn 50 55 60 Glu Lys Phe Lys Gly Lys Ala Thr Leu Thr Ala
Asp Lys Ser Ser Ser 65 70 75 Thr Ala Tyr Met Gln Leu Ser Ser Leu
Lys Ser Glu Asp Ser Ala Val 80 85 90 Tyr Phe Cys Ala Arg Tyr Pro
Thr Tyr Asp Trp Tyr Phe Asp Val Trp 95 100 105 Gly Ala Gly Thr Thr
Val Thr Val Ser Ser 110 115 44381DNAMus
musculusCDS(1)..(381)sig_peptide(1)..(60)mat_peptide(61)..(381)
44atg gtt ttc aca cct cag att ctt gga ctt atg ctt ttc tgg att tca
48Met Val Phe Thr Pro Gln Ile Leu Gly Leu Met Leu Phe Trp Ile Ser
-20 -15 -10 -5 gcc tcc aga ggt gat att gtg cta act cag tct cca gcc
acc ctg tct 96Ala Ser Arg Gly Asp Ile Val Leu Thr Gln Ser Pro Ala
Thr Leu Ser -1 1 5 10 gtg act cca gga gat aga gtc agt ctt tcc tgc
agg gcc agt caa agt 144Val Thr Pro Gly Asp Arg Val Ser Leu Ser Cys
Arg Ala Ser Gln Ser 15 20 25 att agc aac tac cta cac tgg tat caa
caa aaa tca cat gag tct cca 192Ile Ser Asn Tyr Leu His Trp Tyr Gln
Gln Lys Ser His Glu Ser Pro 30 35 40 agg ctt ctc atc aag tat gct
tcc cag tcc atc tct ggg atc ccc tcc 240Arg Leu Leu Ile Lys Tyr Ala
Ser Gln Ser Ile Ser Gly Ile Pro Ser 45 50 55 60 agg ttc agt ggc agt
gga tca ggg aca gat ttc act ctc agt atc aac 288Arg Phe Ser Gly Ser
Gly Ser Gly Thr Asp Phe Thr Leu Ser Ile Asn 65 70 75 agt gtg gag
act gaa gat ttt gga atg tat ttc tgt caa cag agt aac 336Ser Val Glu
Thr Glu Asp Phe Gly Met Tyr Phe Cys Gln Gln Ser Asn 80 85 90 agc
tgg ccg ctc acg ttc ggt gct ggg acc aag ctg gag ctg aaa 381Ser Trp
Pro Leu Thr Phe Gly Ala Gly Thr Lys Leu Glu Leu Lys 95 100 105
45127PRTMus musculus 45Met Val Phe Thr Pro Gln Ile Leu Gly Leu Met
Leu Phe Trp Ile Ser -20 -15 -10 -5 Ala Ser Arg Gly Asp Ile Val Leu
Thr Gln Ser Pro Ala Thr Leu Ser -1 1 5 10 Val Thr Pro Gly Asp Arg
Val Ser Leu Ser Cys Arg Ala Ser Gln Ser 15 20 25 Ile Ser Asn Tyr
Leu His Trp Tyr Gln Gln Lys Ser His Glu Ser Pro 30 35 40 Arg Leu
Leu Ile Lys Tyr Ala Ser Gln Ser Ile Ser Gly Ile Pro Ser 45 50 55 60
Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Ser Ile Asn 65
70 75 Ser Val Glu Thr Glu Asp Phe Gly Met Tyr Phe Cys Gln Gln Ser
Asn 80 85 90 Ser Trp Pro Leu Thr Phe Gly Ala Gly Thr Lys Leu Glu
Leu Lys 95 100 105 46408DNAMus
musculusCDS(1)..(408)sig_peptide(1)..(54)mat_peptide(55)..(408)
46atg aga gtg ctg att ctt ttg tgg ctg ttc aca gcc ttt cct ggt atc
48Met Arg Val Leu Ile Leu Leu Trp Leu Phe Thr Ala Phe Pro Gly Ile
-15 -10 -5 ctg tct gat gtg cag ctt cag gag tcg gga cct ggc ctg gtg
aaa cct 96Leu Ser Asp Val Gln Leu Gln Glu Ser Gly Pro Gly Leu Val
Lys Pro -1 1 5 10 tct cag tct ctg tcc ctc acc tgc act gtc act ggc
tac tca atc acc 144Ser Gln Ser Leu Ser Leu Thr Cys Thr Val Thr Gly
Tyr Ser Ile Thr 15 20 25 30 agt gat tat gcc tgg aac tgg atc cgg cag
ttt cca gga aac aaa ctg 192Ser Asp Tyr Ala Trp Asn Trp Ile Arg Gln
Phe Pro Gly Asn Lys Leu 35 40 45 gag tgg atg ggc tac ata agc tac
agt ggt agc act agc tac aac cca 240Glu Trp Met Gly Tyr Ile Ser Tyr
Ser Gly Ser Thr Ser Tyr Asn Pro 50 55 60 tct ctc aaa agt cga atc
tct atc act cga gac aca tcc aag aac cag 288Ser Leu Lys Ser Arg Ile
Ser Ile Thr Arg Asp Thr Ser Lys Asn Gln 65 70 75 ttc ttc ctg cag
ttg aat tct gtg act act gag gac aca gcc aca tat 336Phe Phe Leu Gln
Leu Asn Ser Val Thr Thr Glu Asp Thr Ala Thr Tyr 80 85 90 tac tgt
gca aga gcc ctc cca tta ccc tgg ttt gct tac tgg ggc caa 384Tyr Cys
Ala Arg Ala Leu Pro Leu Pro Trp Phe Ala Tyr Trp Gly Gln 95 100 105
110 ggg act ctg gtc act gtc tct gca 408Gly Thr Leu Val Thr Val Ser
Ala 115 47136PRTMus musculus 47Met Arg Val Leu Ile Leu Leu Trp Leu
Phe Thr Ala Phe Pro Gly Ile -15 -10 -5 Leu Ser Asp Val Gln Leu Gln
Glu Ser Gly Pro Gly Leu Val Lys Pro -1 1 5 10 Ser Gln Ser Leu Ser
Leu Thr Cys Thr Val Thr Gly Tyr Ser Ile Thr 15 20 25 30 Ser Asp Tyr
Ala Trp Asn Trp Ile Arg Gln Phe Pro Gly Asn Lys Leu 35 40 45 Glu
Trp Met Gly Tyr Ile Ser Tyr Ser Gly Ser Thr Ser Tyr Asn Pro 50 55
60 Ser Leu Lys Ser Arg Ile Ser Ile Thr Arg Asp Thr Ser Lys Asn Gln
65 70 75 Phe Phe Leu Gln Leu Asn Ser Val Thr Thr Glu Asp Thr Ala
Thr Tyr 80 85 90 Tyr Cys Ala Arg Ala Leu Pro Leu Pro Trp Phe Ala
Tyr Trp Gly Gln 95 100 105 110 Gly Thr Leu Val Thr Val Ser Ala 115
48381DNAMus
musculusCDS(1)..(381)sig_peptide(1)..(60)mat_peptide(61)..(381)
48atg gag aca cat tct cag gtc ttt gta tac atg ttg ctg tgg ttg tct
48Met Glu Thr His Ser Gln Val Phe Val Tyr Met Leu Leu Trp Leu Ser
-20 -15 -10 -5 ggt gtt gaa gga gac att gtg atg acc cag tct cac aaa
ttc atg tcc 96Gly Val Glu Gly Asp Ile Val Met Thr Gln Ser His Lys
Phe Met Ser -1 1 5 10 aca tca gta gga gac agg gtc agc atc acc tgc
aag gcc agt cag gat 144Thr Ser Val Gly Asp Arg Val Ser Ile Thr Cys
Lys Ala Ser Gln Asp 15 20 25 gtg ggt act gct gta gcc tgg tat caa
cag aaa cca ggg caa tct cct 192Val Gly Thr Ala Val Ala Trp Tyr Gln
Gln Lys Pro Gly Gln Ser Pro 30 35 40 aaa cta ctg att tac tgg gca
tcc acc cgg cac act gga gtc cct gat 240Lys Leu Leu Ile Tyr Trp Ala
Ser Thr Arg His Thr Gly Val Pro Asp 45 50 55 60 cgc ttc aca ggc agt
gga tct ggg aca gat ttc act ctc acc att agc 288Arg Phe Thr Gly Ser
Gly Ser Gly Thr Asp Phe Thr Leu Thr Ile Ser 65 70 75 aat gtg cag
tct gaa gac ttg gca gat tat ttc tgt cag caa tat agc 336Asn Val Gln
Ser Glu Asp Leu Ala Asp Tyr Phe Cys Gln Gln Tyr Ser 80 85 90 agc
tat cct tac acg ttc gga ggg ggg acc aag ctg gaa ata aaa 381Ser Tyr
Pro Tyr Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile Lys 95 100 105
49127PRTMus musculus 49Met Glu Thr His Ser Gln Val Phe Val Tyr Met
Leu Leu Trp Leu Ser -20 -15 -10 -5 Gly Val Glu Gly Asp Ile Val Met
Thr Gln Ser His Lys Phe Met Ser -1 1 5 10 Thr Ser Val Gly Asp Arg
Val Ser Ile Thr Cys Lys Ala Ser Gln Asp 15 20 25 Val Gly Thr Ala
Val Ala Trp Tyr Gln Gln Lys Pro Gly Gln Ser Pro 30 35 40 Lys Leu
Leu Ile Tyr Trp Ala Ser Thr Arg His Thr Gly Val Pro Asp 45 50 55 60
Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Thr Ile Ser 65
70 75 Asn Val Gln Ser Glu Asp Leu Ala Asp Tyr Phe Cys Gln Gln Tyr
Ser 80 85 90 Ser Tyr Pro Tyr Thr Phe Gly Gly Gly Thr Lys Leu Glu
Ile Lys 95 100 105 501401DNAArtificial SequenceDescription of
Artificial Sequence Synthetic polynucleotide 50atg aga gtg ctg att
ctt ttg tgg ctg ttc aca gcc ttt cct ggt atc 48Met Arg Val Leu Ile
Leu Leu Trp Leu Phe Thr Ala Phe Pro Gly Ile -15 -10 -5 ctg tct gat
gtg cag ctt cag gag tcg gga cct ggc ctg gtg aaa cct 96Leu Ser Asp
Val Gln Leu Gln Glu Ser Gly Pro Gly Leu Val Lys Pro -1 1 5 10 tct
cag tct ctg tcc ctc acc tgc act gtc act ggc tac tca atc acc 144Ser
Gln Ser Leu Ser Leu Thr Cys Thr Val Thr Gly Tyr Ser Ile Thr 15 20
25 30 agt gat tat gcc tgg aac tgg atc cgg cag ttt cca gga aac aaa
ctg 192Ser Asp Tyr Ala Trp Asn Trp Ile Arg Gln Phe Pro Gly Asn Lys
Leu 35 40 45 gag tgg atg ggc tac ata agc tac agt ggt agc act agc
tac aac cca 240Glu Trp Met Gly Tyr Ile Ser Tyr Ser Gly Ser Thr Ser
Tyr Asn Pro 50 55 60 tct ctc aaa agt cga atc tct atc act cga gac
aca tcc aag aac cag 288Ser Leu Lys Ser Arg Ile Ser Ile Thr Arg Asp
Thr Ser Lys Asn Gln 65 70 75 ttc ttc ctg cag ttg aat tct gtg act
act gag gac aca gcc aca tat 336Phe Phe Leu Gln Leu Asn Ser Val Thr
Thr Glu Asp Thr Ala Thr Tyr 80 85 90 tac tgt gca aga tct ccc cct
tac tat gct atg gac tac tgg ggt caa 384Tyr Cys Ala Arg Ser Pro Pro
Tyr Tyr Ala Met Asp Tyr Trp Gly Gln 95 100 105 110 gga acc tca gtc
acc gtc tcc tca gcc tcc acc aag ggc cca tcg gtc 432Gly Thr Ser Val
Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val 115 120 125 ttc ccc
ctg gca ccc tcc tcc aag agc acc tct ggg ggc aca gcg gcc 480Phe Pro
Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala 130 135 140
ctg ggc tgc ctg gtc aag gac tac ttc ccc gaa ccg gtg acg gtg tcg
528Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser
145 150 155 tgg aac tca ggc gcc ctg acc agc ggc gtg cac acc ttc ccg
gct gtc 576Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro
Ala Val 160 165 170 cta cag tcc tca gga ctc tac tcc ctc agc agc gtg
gtg acc gtg ccc 624Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val
Val Thr Val Pro 175 180 185 190 tcc agc agc ttg ggc acc cag acc tac
atc tgc aac gtg aat cac aag 672Ser Ser Ser Leu Gly Thr Gln Thr Tyr
Ile Cys Asn Val Asn His Lys 195 200 205
ccc agc aac acc aag gtg gac aag aaa gtt gag ccc aaa tct tgt gac
720Pro Ser Asn Thr Lys Val Asp Lys Lys Val Glu Pro Lys Ser Cys Asp
210 215 220 aaa act cac aca tgc cca ccg tgc cca gca cct gaa ctc ctg
ggg gga 768Lys Thr His Thr Cys Pro Pro Cys Pro Ala Pro Glu Leu Leu
Gly Gly 225 230 235 ccg tca gtc ttc ctc ttc ccc cca aaa ccc aag gac
acc ctc atg atc 816Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp
Thr Leu Met Ile 240 245 250 tcc cgg acc cct gag gtc aca tgc gtg gtg
gtg gac gtg agc cac gaa 864Ser Arg Thr Pro Glu Val Thr Cys Val Val
Val Asp Val Ser His Glu 255 260 265 270 gac cct gag gtc aag ttc aac
tgg tac gtg gac ggc gtg gag gtg cat 912Asp Pro Glu Val Lys Phe Asn
Trp Tyr Val Asp Gly Val Glu Val His 275 280 285 aat gcc aag aca aag
ccg cgg gag gag cag tac aac agc acg tac cgt 960Asn Ala Lys Thr Lys
Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg 290 295 300 gtg gtc agc
gtc ctc acc gtc ctg cac cag gac tgg ctg aat ggc aag 1008Val Val Ser
Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys 305 310 315 gag
tac aag tgc aag gtc tcc aac aaa gcc ctc cca gcc ccc atc gag 1056Glu
Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu 320 325
330 aaa acc atc tcc aaa gcc aaa ggg cag ccc cga gaa cca cag gtg tac
1104Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr
335 340 345 350 acc ctg ccc cca tcc cgg gat gag ctg acc aag aac cag
gtc agc ctg 1152Thr Leu Pro Pro Ser Arg Asp Glu Leu Thr Lys Asn Gln
Val Ser Leu 355 360 365 acc tgc ctg gtc aaa ggc ttc tat ccc agc gac
atc gcc gtg gag tgg 1200Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp
Ile Ala Val Glu Trp 370 375 380 gag agc aat ggg cag ccg gag aac aac
tac aag acc acg cct ccc gtg 1248Glu Ser Asn Gly Gln Pro Glu Asn Asn
Tyr Lys Thr Thr Pro Pro Val 385 390 395 ctg gac tcc gac ggc tcc ttc
ttc ctc tac agc aag ctc acc gtg gac 1296Leu Asp Ser Asp Gly Ser Phe
Phe Leu Tyr Ser Lys Leu Thr Val Asp 400 405 410 aag agc agg tgg cag
cag ggg aac gtc ttc tca tgc tcc gtg atg cat 1344Lys Ser Arg Trp Gln
Gln Gly Asn Val Phe Ser Cys Ser Val Met His 415 420 425 430 gag gct
ctg cac aac cac tac acg cag aag agc ctc tcc ctg tct ccg 1392Glu Ala
Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro 435 440 445
ggt aaa tga 1401Gly Lys 51466PRTArtificial SequenceDescription of
Artificial Sequence Synthetic construct 51Met Arg Val Leu Ile Leu
Leu Trp Leu Phe Thr Ala Phe Pro Gly Ile -15 -10 -5 Leu Ser Asp Val
Gln Leu Gln Glu Ser Gly Pro Gly Leu Val Lys Pro -1 1 5 10 Ser Gln
Ser Leu Ser Leu Thr Cys Thr Val Thr Gly Tyr Ser Ile Thr 15 20 25 30
Ser Asp Tyr Ala Trp Asn Trp Ile Arg Gln Phe Pro Gly Asn Lys Leu 35
40 45 Glu Trp Met Gly Tyr Ile Ser Tyr Ser Gly Ser Thr Ser Tyr Asn
Pro 50 55 60 Ser Leu Lys Ser Arg Ile Ser Ile Thr Arg Asp Thr Ser
Lys Asn Gln 65 70 75 Phe Phe Leu Gln Leu Asn Ser Val Thr Thr Glu
Asp Thr Ala Thr Tyr 80 85 90 Tyr Cys Ala Arg Ser Pro Pro Tyr Tyr
Ala Met Asp Tyr Trp Gly Gln 95 100 105 110 Gly Thr Ser Val Thr Val
Ser Ser Ala Ser Thr Lys Gly Pro Ser Val 115 120 125 Phe Pro Leu Ala
Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala 130 135 140 Leu Gly
Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser 145 150 155
Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val 160
165 170 Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val
Pro 175 180 185 190 Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn
Val Asn His Lys 195 200 205 Pro Ser Asn Thr Lys Val Asp Lys Lys Val
Glu Pro Lys Ser Cys Asp 210 215 220 Lys Thr His Thr Cys Pro Pro Cys
Pro Ala Pro Glu Leu Leu Gly Gly 225 230 235 Pro Ser Val Phe Leu Phe
Pro Pro Lys Pro Lys Asp Thr Leu Met Ile 240 245 250 Ser Arg Thr Pro
Glu Val Thr Cys Val Val Val Asp Val Ser His Glu 255 260 265 270 Asp
Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His 275 280
285 Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr Tyr Arg
290 295 300 Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn
Gly Lys 305 310 315 Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro
Ala Pro Ile Glu 320 325 330 Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro
Arg Glu Pro Gln Val Tyr 335 340 345 350 Thr Leu Pro Pro Ser Arg Asp
Glu Leu Thr Lys Asn Gln Val Ser Leu 355 360 365 Thr Cys Leu Val Lys
Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp 370 375 380 Glu Ser Asn
Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val 385 390 395 Leu
Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp 400 405
410 Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val Met His
415 420 425 430 Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser
Leu Ser Pro 435 440 445 Gly Lys 52705DNAArtificial
SequenceDescription of Artificial Sequence Synthetic polynucleotide
52atg gag aca cat tct cag gtc ttt gta tac atg ttg ctg tgg ttg tct
48Met Glu Thr His Ser Gln Val Phe Val Tyr Met Leu Leu Trp Leu Ser
-20 -15 -10 -5 ggt gtt gaa gga gac att gtg atg acc cag tct cac aaa
ttc atg tcc 96Gly Val Glu Gly Asp Ile Val Met Thr Gln Ser His Lys
Phe Met Ser -1 1 5 10 aca tca gta gga gac agg gtc agc atc acc tgc
aag gcc agt cag gat 144Thr Ser Val Gly Asp Arg Val Ser Ile Thr Cys
Lys Ala Ser Gln Asp 15 20 25 gtg ggt act gct gta gcc tgg tat caa
cag aaa cca ggg caa tct cct 192Val Gly Thr Ala Val Ala Trp Tyr Gln
Gln Lys Pro Gly Gln Ser Pro 30 35 40 aaa cta ctg att tac tgg gca
tcc acc cgg cac act gga gtc cct gat 240Lys Leu Leu Ile Tyr Trp Ala
Ser Thr Arg His Thr Gly Val Pro Asp 45 50 55 60 cgc ttc aca ggc agt
gga tct ggg aca gat ttc act ctc acc att agc 288Arg Phe Thr Gly Ser
Gly Ser Gly Thr Asp Phe Thr Leu Thr Ile Ser 65 70 75 aat gtg cag
tct gaa gac ttg gca gat tat ttc tgt cag caa tat agc 336Asn Val Gln
Ser Glu Asp Leu Ala Asp Tyr Phe Cys Gln Gln Tyr Ser 80 85 90 agc
tat cct ctc acg ttc ggt gct ggg acc aag ctg gag ctg aaa cga 384Ser
Tyr Pro Leu Thr Phe Gly Ala Gly Thr Lys Leu Glu Leu Lys Arg 95 100
105 act gtg gct gca cca tct gtc ttc atc ttc ccg cca tct gat gag cag
432Thr Val Ala Ala Pro Ser Val Phe Ile Phe Pro Pro Ser Asp Glu Gln
110 115 120 ttg aaa tct gga act gcc tct gtt gtg tgc ctg ctg aat aac
ttc tat 480Leu Lys Ser Gly Thr Ala Ser Val Val Cys Leu Leu Asn Asn
Phe Tyr 125 130 135 140 ccc aga gag gcc aaa gta cag tgg aag gtg gat
aac gcc ctc caa tcg 528Pro Arg Glu Ala Lys Val Gln Trp Lys Val Asp
Asn Ala Leu Gln Ser 145 150 155 ggt aac tcc cag gag agt gtc aca gag
cag gac agc aag gac agc acc 576Gly Asn Ser Gln Glu Ser Val Thr Glu
Gln Asp Ser Lys Asp Ser Thr 160 165 170 tac agc ctc agc agc acc ctg
acg ctg agc aaa gca gac tac gag aaa 624Tyr Ser Leu Ser Ser Thr Leu
Thr Leu Ser Lys Ala Asp Tyr Glu Lys 175 180 185 cac aaa gtc tac gcc
tgc gaa gtc acc cat cag ggc ctg agc tcg ccc 672His Lys Val Tyr Ala
Cys Glu Val Thr His Gln Gly Leu Ser Ser Pro 190 195 200 gtc aca aag
agc ttc aac agg gga gag tgc tag 705Val Thr Lys Ser Phe Asn Arg Gly
Glu Cys 205 210 53234PRTArtificial SequenceDescription of
Artificial Sequence Synthetic construct 53Met Glu Thr His Ser Gln
Val Phe Val Tyr Met Leu Leu Trp Leu Ser -20 -15 -10 -5 Gly Val Glu
Gly Asp Ile Val Met Thr Gln Ser His Lys Phe Met Ser -1 1 5 10 Thr
Ser Val Gly Asp Arg Val Ser Ile Thr Cys Lys Ala Ser Gln Asp 15 20
25 Val Gly Thr Ala Val Ala Trp Tyr Gln Gln Lys Pro Gly Gln Ser Pro
30 35 40 Lys Leu Leu Ile Tyr Trp Ala Ser Thr Arg His Thr Gly Val
Pro Asp 45 50 55 60 Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp Phe Thr
Leu Thr Ile Ser 65 70 75 Asn Val Gln Ser Glu Asp Leu Ala Asp Tyr
Phe Cys Gln Gln Tyr Ser 80 85 90 Ser Tyr Pro Leu Thr Phe Gly Ala
Gly Thr Lys Leu Glu Leu Lys Arg 95 100 105 Thr Val Ala Ala Pro Ser
Val Phe Ile Phe Pro Pro Ser Asp Glu Gln 110 115 120 Leu Lys Ser Gly
Thr Ala Ser Val Val Cys Leu Leu Asn Asn Phe Tyr 125 130 135 140 Pro
Arg Glu Ala Lys Val Gln Trp Lys Val Asp Asn Ala Leu Gln Ser 145 150
155 Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser Lys Asp Ser Thr
160 165 170 Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala Asp Tyr
Glu Lys 175 180 185 His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly
Leu Ser Ser Pro 190 195 200 Val Thr Lys Ser Phe Asn Arg Gly Glu Cys
205 210 541407DNAArtificial SequenceDescription of Artificial
Sequence Synthetic polynucleotide 54atg gga tgg agc tgg gtc ttt ctc
ttc ctc ctg tca gga act gca ggt 48Met Gly Trp Ser Trp Val Phe Leu
Phe Leu Leu Ser Gly Thr Ala Gly -15 -10 -5 gtc cac tgc cag gtc cag
ctg aag cag tct gga gct gag ctg gtg agg 96Val His Cys Gln Val Gln
Leu Lys Gln Ser Gly Ala Glu Leu Val Arg -1 1 5 10 cct ggg gct tca
gtg aag ctg tcc tgc aag act tct gga tac atc ttc 144Pro Gly Ala Ser
Val Lys Leu Ser Cys Lys Thr Ser Gly Tyr Ile Phe 15 20 25 30 acc agc
tac tgg att cac tgg gta aaa cag agg tct gga cag ggc ctt 192Thr Ser
Tyr Trp Ile His Trp Val Lys Gln Arg Ser Gly Gln Gly Leu 35 40 45
gag tgg att gca agg att tat cct gga act ggt agt act tac tac aat
240Glu Trp Ile Ala Arg Ile Tyr Pro Gly Thr Gly Ser Thr Tyr Tyr Asn
50 55 60 gag aag ttc aag ggc aag gcc aca ctg act gca gac aaa tcc
tcc agc 288Glu Lys Phe Lys Gly Lys Ala Thr Leu Thr Ala Asp Lys Ser
Ser Ser 65 70 75 act gcc tac atg cag ctc agc agc ctg aaa tct gag
gac tct gct gtc 336Thr Ala Tyr Met Gln Leu Ser Ser Leu Lys Ser Glu
Asp Ser Ala Val 80 85 90 tat ttc tgt gca aga tac cct acc tac gac
tgg tac ttc gat gtc tgg 384Tyr Phe Cys Ala Arg Tyr Pro Thr Tyr Asp
Trp Tyr Phe Asp Val Trp 95 100 105 110 ggc gca ggg acc acg gtc acc
gtc tcc tca gcc tcc acc aag ggc cca 432Gly Ala Gly Thr Thr Val Thr
Val Ser Ser Ala Ser Thr Lys Gly Pro 115 120 125 tcg gtc ttc ccc ctg
gca ccc tcc tcc aag agc acc tct ggg ggc aca 480Ser Val Phe Pro Leu
Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr 130 135 140 gcg gcc ctg
ggc tgc ctg gtc aag gac tac ttc ccc gaa ccg gtg acg 528Ala Ala Leu
Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr 145 150 155 gtg
tcg tgg aac tca ggc gcc ctg acc agc ggc gtg cac acc ttc ccg 576Val
Ser Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro 160 165
170 gct gtc cta cag tcc tca gga ctc tac tcc ctc agc agc gtg gtg acc
624Ala Val Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr
175 180 185 190 gtg ccc tcc agc agc ttg ggc acc cag acc tac atc tgc
aac gtg aat 672Val Pro Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys
Asn Val Asn 195 200 205 cac aag ccc agc aac acc aag gtg gac aag aaa
gtt gag ccc aaa tct 720His Lys Pro Ser Asn Thr Lys Val Asp Lys Lys
Val Glu Pro Lys Ser 210 215 220 tgt gac aaa act cac aca tgc cca ccg
tgc cca gca cct gaa ctc ctg 768Cys Asp Lys Thr His Thr Cys Pro Pro
Cys Pro Ala Pro Glu Leu Leu 225 230 235 ggg gga ccg tca gtc ttc ctc
ttc ccc cca aaa ccc aag gac acc ctc 816Gly Gly Pro Ser Val Phe Leu
Phe Pro Pro Lys Pro Lys Asp Thr Leu 240 245 250 atg atc tcc cgg acc
cct gag gtc aca tgc gtg gtg gtg gac gtg agc 864Met Ile Ser Arg Thr
Pro Glu Val Thr Cys Val Val Val Asp Val Ser 255 260 265 270 cac gaa
gac cct gag gtc aag ttc aac tgg tac gtg gac ggc gtg gag 912His Glu
Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu 275 280 285
gtg cat aat gcc aag aca aag ccg cgg gag gag cag tac aac agc acg
960Val His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr
290 295 300 tac cgt gtg gtc agc gtc ctc acc gtc ctg cac cag gac tgg
ctg aat 1008Tyr Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp
Leu Asn 305 310 315 ggc aag gag tac aag tgc aag gtc tcc aac aaa gcc
ctc cca gcc ccc 1056Gly Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala
Leu Pro Ala Pro 320 325 330 atc gag aaa acc atc tcc aaa gcc aaa ggg
cag ccc cga gaa cca cag 1104Ile Glu Lys Thr Ile Ser Lys Ala Lys Gly
Gln Pro Arg Glu Pro Gln 335 340 345 350 gtg tac acc ctg ccc cca tcc
cgg gat gag ctg acc aag aac cag gtc 1152Val Tyr Thr Leu Pro Pro Ser
Arg Asp Glu Leu Thr Lys Asn Gln Val 355 360 365 agc ctg acc tgc ctg
gtc aaa ggc ttc tat ccc agc gac atc gcc gtg 1200Ser Leu Thr Cys Leu
Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala Val 370 375 380 gag tgg gag
agc aat ggg cag ccg gag aac aac tac aag acc acg cct 1248Glu Trp Glu
Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro 385 390 395
ccc gtg ctg gac tcc gac ggc tcc ttc ttc ctc tac agc aag ctc acc
1296Pro Val Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr
400 405 410 gtg gac aag agc agg tgg cag cag ggg aac gtc ttc tca tgc
tcc gtg 1344Val Asp Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys
Ser Val 415 420 425 430 atg cat gag gct ctg cac aac cac tac acg cag
aag agc ctc tcc ctg 1392Met His Glu Ala Leu His Asn His Tyr Thr Gln
Lys Ser Leu Ser Leu 435 440 445 tct ccg ggt aaa tga 1407Ser Pro Gly
Lys 450 55468PRTArtificial SequenceDescription of Artificial
Sequence Synthetic construct 55Met Gly Trp Ser Trp Val Phe Leu Phe
Leu Leu Ser Gly Thr Ala Gly -15 -10 -5 Val His Cys Gln Val Gln Leu
Lys Gln Ser Gly Ala Glu Leu Val Arg -1 1 5 10 Pro Gly Ala Ser Val
Lys Leu Ser Cys Lys Thr Ser Gly Tyr Ile Phe 15 20 25 Thr Ser Tyr
Trp Ile His Trp Val Lys Gln Arg Ser Gly Gln Gly Leu 30 35 40 45 Glu
Trp Ile Ala Arg Ile Tyr Pro Gly Thr Gly Ser Thr Tyr Tyr Asn 50 55
60 Glu Lys Phe Lys Gly Lys Ala Thr Leu Thr Ala Asp Lys Ser Ser Ser
65 70 75 Thr Ala Tyr Met Gln Leu Ser Ser Leu Lys Ser Glu Asp Ser
Ala Val 80 85 90 Tyr Phe Cys Ala Arg Tyr Pro Thr Tyr Asp Trp Tyr
Phe Asp Val Trp 95 100 105 Gly Ala Gly Thr Thr Val Thr Val Ser Ser
Ala Ser Thr Lys Gly Pro 110 115 120 125 Ser Val Phe Pro Leu Ala Pro
Ser Ser Lys Ser Thr Ser Gly Gly Thr 130 135 140 Ala Ala Leu Gly Cys
Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr 145 150 155 Val Ser Trp
Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro 160 165 170 Ala
Val Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr 175 180
185 Val Pro Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn
190 195 200 205 His Lys Pro Ser Asn Thr Lys Val Asp Lys Lys Val Glu
Pro Lys Ser 210 215 220 Cys Asp Lys Thr His Thr Cys Pro Pro Cys Pro
Ala Pro Glu Leu Leu 225 230 235 Gly Gly Pro Ser Val Phe Leu Phe Pro
Pro Lys Pro Lys Asp Thr Leu 240 245 250 Met Ile Ser Arg Thr Pro Glu
Val Thr Cys Val Val Val Asp Val Ser 255 260 265 His Glu Asp Pro Glu
Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu 270 275 280 285 Val His
Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser Thr 290 295 300
Tyr Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn 305
310 315 Gly Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala
Pro 320 325 330 Ile Glu Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg
Glu Pro Gln 335 340 345 Val Tyr Thr Leu Pro Pro Ser Arg Asp Glu Leu
Thr Lys Asn Gln Val 350 355 360 365 Ser Leu Thr Cys Leu Val Lys Gly
Phe Tyr Pro Ser Asp Ile Ala Val 370 375 380 Glu Trp Glu Ser Asn Gly
Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro 385 390 395 Pro Val Leu Asp
Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr 400 405 410 Val Asp
Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser Val 415 420 425
Met His Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu 430
435 440 445 Ser Pro Gly Lys 56705DNAArtificial SequenceDescription
of Artificial Sequence Synthetic polynucleotide 56atg gtt ttc aca
cct cag att ctt gga ctt atg ctt ttc tgg att tca 48Met Val Phe Thr
Pro Gln Ile Leu Gly Leu Met Leu Phe Trp Ile Ser -20 -15 -10 -5 gcc
tcc aga ggt gat att gtg cta act cag tct cca gcc acc ctg tct 96Ala
Ser Arg Gly Asp Ile Val Leu Thr Gln Ser Pro Ala Thr Leu Ser -1 1 5
10 gtg act cca gga gat aga gtc agt ctt tcc tgc agg gcc agt caa agt
144Val Thr Pro Gly Asp Arg Val Ser Leu Ser Cys Arg Ala Ser Gln Ser
15 20 25 att agc aac tac cta cac tgg tat caa caa aaa tca cat gag
tct cca 192Ile Ser Asn Tyr Leu His Trp Tyr Gln Gln Lys Ser His Glu
Ser Pro 30 35 40 agg ctt ctc atc aag tat gct tcc cag tcc atc tct
ggg atc ccc tcc 240Arg Leu Leu Ile Lys Tyr Ala Ser Gln Ser Ile Ser
Gly Ile Pro Ser 45 50 55 60 agg ttc agt ggc agt gga tca ggg aca gat
ttc act ctc agt atc aac 288Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp
Phe Thr Leu Ser Ile Asn 65 70 75 agt gtg gag act gaa gat ttt gga
atg tat ttc tgt caa cag agt aac 336Ser Val Glu Thr Glu Asp Phe Gly
Met Tyr Phe Cys Gln Gln Ser Asn 80 85 90 agc tgg ccg ctc acg ttc
ggt gct ggg acc aag ctg gag ctg aaa cga 384Ser Trp Pro Leu Thr Phe
Gly Ala Gly Thr Lys Leu Glu Leu Lys Arg 95 100 105 act gtg gct gca
cca tct gtc ttc atc ttc ccg cca tct gat gag cag 432Thr Val Ala Ala
Pro Ser Val Phe Ile Phe Pro Pro Ser Asp Glu Gln 110 115 120 ttg aaa
tct gga act gcc tct gtt gtg tgc ctg ctg aat aac ttc tat 480Leu Lys
Ser Gly Thr Ala Ser Val Val Cys Leu Leu Asn Asn Phe Tyr 125 130 135
140 ccc aga gag gcc aaa gta cag tgg aag gtg gat aac gcc ctc caa tcg
528Pro Arg Glu Ala Lys Val Gln Trp Lys Val Asp Asn Ala Leu Gln Ser
145 150 155 ggt aac tcc cag gag agt gtc aca gag cag gac agc aag gac
agc acc 576Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser Lys Asp
Ser Thr 160 165 170 tac agc ctc agc agc acc ctg acg ctg agc aaa gca
gac tac gag aaa 624Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala
Asp Tyr Glu Lys 175 180 185 cac aaa gtc tac gcc tgc gaa gtc acc cat
cag ggc ctg agc tcg ccc 672His Lys Val Tyr Ala Cys Glu Val Thr His
Gln Gly Leu Ser Ser Pro 190 195 200 gtc aca aag agc ttc aac agg gga
gag tgc tag 705Val Thr Lys Ser Phe Asn Arg Gly Glu Cys 205 210
57234PRTArtificial SequenceDescription of Artificial Sequence
Synthetic construct 57Met Val Phe Thr Pro Gln Ile Leu Gly Leu Met
Leu Phe Trp Ile Ser -20 -15 -10 -5 Ala Ser Arg Gly Asp Ile Val Leu
Thr Gln Ser Pro Ala Thr Leu Ser -1 1 5 10 Val Thr Pro Gly Asp Arg
Val Ser Leu Ser Cys Arg Ala Ser Gln Ser 15 20 25 Ile Ser Asn Tyr
Leu His Trp Tyr Gln Gln Lys Ser His Glu Ser Pro 30 35 40 Arg Leu
Leu Ile Lys Tyr Ala Ser Gln Ser Ile Ser Gly Ile Pro Ser 45 50 55 60
Arg Phe Ser Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Ser Ile Asn 65
70 75 Ser Val Glu Thr Glu Asp Phe Gly Met Tyr Phe Cys Gln Gln Ser
Asn 80 85 90 Ser Trp Pro Leu Thr Phe Gly Ala Gly Thr Lys Leu Glu
Leu Lys Arg 95 100 105 Thr Val Ala Ala Pro Ser Val Phe Ile Phe Pro
Pro Ser Asp Glu Gln 110 115 120 Leu Lys Ser Gly Thr Ala Ser Val Val
Cys Leu Leu Asn Asn Phe Tyr 125 130 135 140 Pro Arg Glu Ala Lys Val
Gln Trp Lys Val Asp Asn Ala Leu Gln Ser 145 150 155 Gly Asn Ser Gln
Glu Ser Val Thr Glu Gln Asp Ser Lys Asp Ser Thr 160 165 170 Tyr Ser
Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala Asp Tyr Glu Lys 175 180 185
His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly Leu Ser Ser Pro 190
195 200 Val Thr Lys Ser Phe Asn Arg Gly Glu Cys 205 210 586PRTMus
musculusMISC_FEATURE(1)..(6)CDR 58Ser Asp Tyr Ala Trp Asn 1 5
5917PRTMus musculusMISC_FEATURE(1)..(17)CDR 59Tyr Ile Ser Tyr Ser
Gly Ser Thr Ser Tyr Asn Pro Ser Leu Lys Ser 1 5 10 15 Arg 609PRTMus
musculusMISC_FEATURE(1)..(9)CDR 60Ser Pro Pro Tyr Tyr Ala Met Asp
Tyr 1 5 6111PRTMus musculusMISC_FEATURE(1)..(11)CDR 61Lys Ala Ser
Gln Asp Val Gly Thr Ala Val Ala 1 5 10 627PRTMus
musculusMISC_FEATURE(1)..(7)CDR 62Trp Ala Ser Thr Arg His Thr 1 5
639PRTMus musculusMISC_FEATURE(1)..(9)CDR 63Gln Gln Tyr Ser Ser Tyr
Pro Leu Thr 1 5 645PRTMus musculusMISC_FEATURE(1)..(5)CDR 64Ser Tyr
Trp Ile His 1 5 6517PRTMus musculusMISC_FEATURE(1)..(17)CDR 65Arg
Ile Tyr Pro Gly Thr Gly Ser Thr Tyr Tyr Asn Glu Lys Phe Lys 1 5 10
15 Gly 6610PRTMus musculusMISC_FEATURE(1)..(10)CDR 66Tyr Pro Thr
Tyr Asp Trp Tyr Phe Asp Val 1 5 10 6711PRTMus
musculusMISC_FEATURE(1)..(11)CDR 67Arg Ala Ser Gln Ser Ile Ser Asn
Tyr Leu His 1 5 10 687PRTMus musculusMISC_FEATURE(1)..(7)CDR 68Tyr
Ala Ser Gln Ser Ile Ser 1 5 699PRTMus
musculusMISC_FEATURE(1)..(9)CDR 69Gln Gln Ser Asn Ser Trp Pro Leu
Thr 1 5 706PRTMus musculusMISC_FEATURE(1)..(6)CDR 70Ser Asp Tyr Ala
Trp Asn 1 5 7117PRTMus musculusMISC_FEATURE(1)..(17)CDR 71Tyr Ile
Ser Tyr Ser Gly Ser Thr Ser Tyr Asn Pro Ser Leu Lys Ser 1 5 10 15
Arg 729PRTMus musculusMISC_FEATURE(1)..(9)CDR 72Ala Leu Pro Leu Pro
Trp Phe Ala Tyr 1 5 7311PRTMus musculusMISC_FEATURE(1)..(11)CDR
73Lys Ala Ser Gln Asp Val Gly Thr Ala Val Ala 1 5 10 747PRTMus
musculusMISC_FEATURE(1)..(7)CDR 74Trp Ala Ser Thr Arg His Thr 1 5
759PRTMus musculusMISC_FEATURE(1)..(9)CDR 75Gln Gln Tyr Ser Ser Tyr
Pro Tyr Thr 1 5 764PRTArtificial SequenceDescription of Artificial
Sequence Synthetic peptide 76Tyr Xaa Xaa Leu 1 77462PRTHomo sapiens
77Met Thr Leu Ile Leu Thr Ser Leu Leu Phe Phe Gly Leu Ser Leu Gly 1
5 10 15 Pro Arg Thr Arg Val Gln Ala Glu Asn Leu Pro Lys Pro Ile Leu
Trp 20 25 30 Ala Glu Pro Gly Pro Val Ile Thr Trp His Asn Pro Val
Thr Ile Trp 35 40 45 Cys Gln Gly Thr Leu Glu Ala Gln Gly Tyr Arg
Leu Lys Glu Gly Asn 50 55 60 Ser Met Ser Arg His Ile Leu Lys Thr
Leu Glu Ser Glu Asn Lys Val65 70 75 80 Lys Leu Ser Ile Pro Ser Met
Met Trp Glu His Ala Gly Arg Tyr His 85 90 95 Cys Tyr Tyr Gln Ser
Pro Ala Gly Trp Ser Glu Pro Ser Asp Pro Leu 100 105 110 Glu Leu Val
Val Thr Ala Tyr Ser Arg Pro Thr Leu Ser Ala Leu Pro 115 120 125 Ser
Pro Val Val Thr Ser Gly Val Asn Val Thr Leu Arg Cys Ala Ser 130 135
140 Arg Leu Gly Leu Gly Arg Phe Thr Leu Ile Glu Glu Gly Asp His
Arg145 150 155 160 Leu Ser Trp Thr Leu Asn Ser His Gln His Asn His
Gly Lys Phe Gln 165 170 175 Ala Leu Phe Pro Met Gly Pro Leu Thr Phe
Ser Asn Arg Gly Thr Phe 180 185 190 Arg Cys Tyr Gly Tyr Glu Asn Asn
Thr Pro Tyr Val Trp Ser Glu Pro 195 200 205 Ser Asp Pro Leu Gln Leu
Leu Val Ser Gly Val Ser Arg Lys Pro Ser 210 215 220 Leu Leu Thr Leu
Gln Gly Pro Val Val Thr Pro Gly Glu Asn Leu Thr225 230 235 240 Leu
Gln Cys Gly Ser Asp Val Gly Tyr Ile Arg Tyr Thr Leu Tyr Lys 245 250
255 Glu Gly Ala Asp Gly Leu Pro Gln Arg Pro Gly Arg Gln Pro Gln Ala
260 265 270 Gly Leu Ser Gln Ala Asn Phe Thr Leu Ser Pro Val Ser Arg
Ser Tyr 275 280 285 Gly Gly Gln Tyr Arg Cys Tyr Gly Ala His Asn Val
Ser Ser Glu Trp 290 295 300 Ser Ala Pro Ser Asp Pro Leu Asp Ile Leu
Ile Ala Gly Gln Ile Ser305 310 315 320 Asp Arg Pro Ser Leu Ser Val
Gln Pro Gly Pro Thr Val Thr Ser Gly 325 330 335 Glu Lys Val Thr Leu
Leu Cys Gln Ser Trp Asp Pro Met Phe Thr Phe 340 345 350 Leu Leu Thr
Lys Glu Gly Ala Ala His Pro Pro Leu Arg Leu Arg Ser 355 360 365 Met
Tyr Gly Ala His Lys Tyr Gln Ala Glu Phe Pro Met Ser Pro Val 370 375
380 Thr Ser Ala His Ala Gly Thr Tyr Arg Cys Tyr Gly Ser Arg Ser
Ser385 390 395 400 Asn Pro Tyr Leu Leu Ser His Pro Ser Glu Pro Leu
Glu Leu Val Val 405 410 415 Ser Gly Ala Thr Glu Thr Leu Asn Pro Ala
Gln Lys Lys Ser Asp Ser 420 425 430 Lys Thr Ala Pro His Leu Gln Asp
Tyr Thr Val Glu Asn Leu Ile Arg 435 440 445 Met Gly Val Ala Gly Leu
Val Leu Leu Phe Leu Gly Ile Leu 450 455 460 78461PRTHomo sapiens
78Met Thr Pro Ala Leu Thr Ala Leu Leu Cys Leu Gly Leu Ser Leu Gly 1
5 10 15Pro Arg Thr Arg Val Gln Ala Gly Pro Phe Pro Lys Pro Thr Leu
Trp 20 25 30 Ala Glu Pro Gly Ser Val Ile Ser Trp Gly Ser Pro Val
Thr Ile Trp 35 40 45 Cys Gln Gly Ser Leu Glu Ala Gln Glu Tyr Arg
Leu Asp Lys Glu Gly 50 55 60 Ser Pro Glu Pro Leu Asp Arg Asn Asn
Pro Leu Glu Pro Lys Asn Lys 65 70 75 80 Ala Arg Phe Ser Ile Pro Ser
Met Thr Glu His His Ala Gly Arg Tyr 85 90 95 Arg Cys His Tyr Tyr
Ser Ser Ala Gly Trp Ser Glu Pro Ser Asp Pro 100 105 110Leu Glu Leu
Val Met Thr Gly Phe Tyr Asn Lys Pro Thr Leu Ser Ala 115 120 125 Leu
Pro Ser Pro Val Val Ala Ser Gly Gly Asn Met Thr Leu Arg Cys 130 135
140 Gly Ser Gln Lys Gly Tyr His His Phe Val Leu Met Lys Glu Gly Glu
145 150 155 160 His Gln Leu Pro Arg Thr Leu Asp Ser Gln Gln Leu His
Ser Gly Gly 165 170 175 Phe Gln Ala Leu Phe Pro Val Gly Pro Val Asn
Pro Ser His Arg Trp 180 185 190 Arg Phe Thr Cys Tyr Tyr Tyr Tyr Met
Asn Thr Pro Gln Val Trp Ser 195 200 205 His Pro Ser Asp Pro Leu Glu
Ile Leu Pro Ser Gly Val Ser Arg Lys 210 215 220 Pro Ser Leu Leu Thr
Leu Gln Gly Pro Val Leu Ala Pro Gly Gln Ser 225 230 235 240Leu Thr
Leu Gln Cys Gly Ser Asp Val Gly Tyr Asp Arg Phe Val Leu 245 250 255
Tyr Lys Glu Gly Glu Arg Asp Phe Leu Gln Arg Pro Gly Gln Gln Pro 260
265 270
Gln Ala Gly Leu Ser Gln Ala Asn Phe Thr Leu Gly Pro Val Ser Pro 275
280 285 Ser His Gly Gly Gln Tyr Arg Cys Tyr Gly Ala His Asn Leu Ser
Ser 290 295 300 Glu Trp Ser Ala Pro Ser Asp Pro Leu Asn Ile Leu Met
Ala Gly Gln 305 310 315 320 Ile Tyr Asp Thr Val Ser Leu Ser Ala Gln
Pro Gly Pro Thr Val Ala 325 330 335 Ser Gly Glu Asn Val Thr Leu Leu
Cys Gln Ser Trp Trp Gln Phe Asp 340 345 350 Thr Phe Leu Leu Thr Lys
Glu Gly Ala Ala His Pro Pro Leu Arg Leu 355 360 365 Arg Ser Met Tyr
Gly Ala His Lys Tyr Gln Ala Glu Phe Pro Met Ser 370 375 380 Pro Val
Thr Ser Ala His Ala Gly Thr Tyr Arg Cys Tyr Gly Ser Tyr 385 390 395
400 Ser Ser Asn Pro His Leu Leu Ser Phe Pro Ser Glu Pro Leu Glu Leu
405 410 415 Met Val Ser Gly His Ser Gly Gly Ser Ser Leu Pro Pro Thr
Gly Pro 420 425 430 Pro Ser Thr Pro Gly Leu Gly Arg Tyr Leu Glu Val
Leu Ile Gly Val 435 440 445 Ser Val Ala Phe Val Leu Leu Leu Phe Leu
Leu Leu Phe 450 455 460 79447PRTHomo sapiens 79Met Thr Pro Ile Leu
Thr Val Leu Ile Cys Leu Gly Leu Ser Leu Gly 1 5 10 15Pro Arg Thr
His Val Gln Ala Gly Pro Phe Pro Lys Pro Thr Leu Trp 20 25 30 Ala
Glu Pro Gly Ser Val Ile Ser Trp Gly Ser Pro Val Thr Ile Trp 35 40
45 Cys Gln Gly Ser Leu Glu Ala Gln Glu Tyr Arg Leu Asp Lys Glu Gly
50 55 60 Ser Pro Glu Pro Trp Asp Arg Asn Asn Pro Leu Glu Pro Lys
Asn Lys 65 70 75 80 Ala Arg Phe Ser Ile Pro Ser Ile Thr Glu His His
Ala Gly Arg Tyr 85 90 95 Arg Cys His Tyr Tyr Ser Ser Ala Gly Trp
Ser Glu Pro Ser Asp Ala 100 105 110Leu Glu Leu Val Met Thr Gly Ala
Tyr Ser Lys Pro Thr Leu Ser Ala 115 120 125 Leu Pro Ser Pro Val Val
Ala Ser Gly Gly Asn Met Thr Leu Gln Cys 130 135 140 Gly Ser Gln Lys
Gly Tyr His Gln Phe Val Leu Met Lys Glu Gly Glu 145 150 155 160 His
Gln Leu Pro Arg Thr Leu Asp Ser Gln Gln Leu His Ser Gly Gly 165 170
175 Phe Gln Ala Leu Phe Pro Val Gly Pro Val Asn Pro Ser His Arg Trp
180 185 190 Arg Phe Thr Cys Tyr Tyr Tyr Tyr Met Asn Thr Pro Arg Val
Trp Ser 195 200 205 His Pro Ser Asp Pro Leu Glu Ile Leu Pro Ser Gly
Val Ser Arg Lys 210 215 220 Pro Ser Leu Leu Thr Leu Gln Gly Pro Val
Leu Ala Pro Gly Gln Ser 225 230 235 240Leu Thr Leu Gln Cys Gly Ser
Asp Val Gly Tyr Asp Arg Phe Val Leu 245 250 255 Tyr Lys Glu Gly Glu
Arg Asp Phe Leu Gln Arg Pro Gly Gln Gln Pro 260 265 270 Gln Ala Gly
Leu Ser Gln Ala Asn Phe Thr Leu Gly Pro Val Ser Pro 275 280 285 Ser
His Gly Gly Gln Tyr Arg Cys Tyr Gly Ala His Asn Leu Ser Ser 290 295
300 Glu Trp Ser Ala Pro Ser Asp Pro Leu Asn Ile Leu Met Ala Gly Gln
305 310 315 320 Ile Tyr Asp Thr Val Ser Leu Ser Ala Gln Pro Gly Pro
Thr Val Ala 325 330 335 Ser Gly Glu Asn Val Thr Leu Leu Cys Gln Ser
Trp Trp Gln Phe Asp 340 345 350 Thr Phe Leu Leu Thr Lys Glu Gly Ala
Ala His Pro Pro Leu Arg Leu 355 360 365 Arg Ser Met Tyr Gly Ala His
Lys Tyr Gln Ala Glu Phe Pro Met Ser 370 375 380 Pro Val Thr Ser Ala
His Ala Gly Thr Tyr Arg Cys Tyr Gly Ser Tyr 385 390 395 400 Ser Ser
Asn Pro His Leu Leu Ser Phe Pro Ser Glu Pro Leu Glu Leu 405 410 415
Met Val Ser Ala Ser His Ala Lys Asp Tyr Thr Val Glu Asn Leu Ile 420
425 430 Arg Met Gly Met Ala Gly Leu Val Leu Val Phe Leu Gly Ile Leu
435 440 445 80478PRTHomo sapiens 80Met Thr Pro Ile Val Thr Val Leu
Ile Cys Leu Arg Leu Ser Leu Gly 1 5 10 15Pro Arg Thr His Val Gln
Ala Gly Thr Leu Pro Lys Pro Thr Leu Trp 20 25 30 Ala Glu Pro Gly
Ser Val Ile Thr Gln Gly Ser Pro Val Thr Leu Trp 35 40 45 Cys Gln
Gly Ile Leu Glu Thr Gln Glu Tyr Arg Leu Tyr Arg Glu Lys 50 55 60
Lys Thr Ala Pro Trp Ile Thr Arg Ile Pro Gln Glu Ile Val Lys Lys 65
70 75 80 Gly Gln Phe Pro Ile Pro Ser Ile Thr Trp Glu His Thr Gly
Arg Tyr 85 90 95 Arg Cys Phe Tyr Gly Ser His Thr Ala Gly Trp Ser
Glu Pro Ser Asp 100 105 110Pro Leu Glu Leu Val Val Thr Gly Ala Tyr
Ile Lys Pro Thr Leu Ser 115 120 125 Ala Leu Pro Ser Pro Val Val Thr
Ser Gly Gly Asn Val Thr Leu His 130 135 140 Cys Val Ser Gln Val Ala
Phe Gly Ser Phe Ile Leu Cys Lys Glu Gly 145 150 155 160 Glu Asp Glu
His Pro Gln Cys Leu Asn Ser Gln Pro Arg Thr His Gly 165 170 175 Trp
Ser Arg Ala Ile Phe Ser Val Gly Pro Val Ser Pro Ser Arg Arg 180 185
190 Trp Ser Tyr Arg Cys Tyr Ala Tyr Asp Ser Asn Ser Pro His Val Trp
195 200 205 Ser Leu Pro Ser Asp Leu Leu Glu Leu Leu Val Leu Gly Val
Ser Lys 210 215 220 Lys Pro Ser Leu Ser Val Gln Pro Gly Pro Ile Val
Ala Pro Gly Glu 225 230 235 240Ser Leu Thr Leu Gln Cys Val Ser Asp
Val Ser Tyr Asp Arg Phe Val 245 250 255 Leu Tyr Lys Glu Gly Glu Arg
Asp Phe Leu Gln Leu Pro Gly Pro Gln 260 265 270 Pro Gln Ala Gly Leu
Ser Gln Ala Asn Phe Thr Leu Gly Pro Val Ser 275 280 285 Arg Ser Tyr
Gly Gly Gln Tyr Arg Cys Ser Gly Ala Tyr Asn Leu Ser 290 295 300 Ser
Glu Trp Ser Ala Pro Ser Asp Pro Leu Asp Ile Leu Ile Ala Gly 305 310
315 320Gln Phe Arg Gly Arg Pro Phe Ile Ser Val His Pro Gly Pro Thr
Val 325 330 335 Ala Ser Gly Glu Asn Val Thr Leu Leu Cys Gln Ser Trp
Gly Pro Phe 340 345 350 His Thr Phe Leu Leu Thr Lys Ala Gly Ala Ala
Asp Ala Pro Leu Arg 355 360 365 Leu Arg Ser Ile His Glu Tyr Pro Lys
Tyr Gln Ala Glu Phe Pro Met 370 375 380 Ser Pro Val Thr Ser Ala His
Ser Gly Thr Tyr Arg Cys Tyr Gly Ser 385 390 395 400Leu Ser Ser Asn
Pro Tyr Leu Leu Ser His Pro Ser Asp Ser Leu Glu 405 410 415 Leu Met
Val Ser Gly Ala Ala Glu Thr Leu Ser Pro Pro Gln Asn Lys 420 425 430
Ser Asp Ser Lys Ala Gly Ala Ala Asn Thr Leu Ser Pro Ser Gln Asn 435
440 445 Lys Thr Ala Ser His Pro Gln Asp Tyr Thr Val Glu Asn Leu Ile
Arg 450 455 460 Met Gly Ile Ala Gly Leu Val Leu Val Val Leu Gly Ile
Leu465 470 47581449PRTHomo sapiens 81Met Thr Pro Ile Leu Thr Val
Leu Ile Cys Leu Gly Leu Ser Leu Gly 1 5 10 15Pro Arg Thr His Val
Gln Ala Gly His Leu Pro Lys Pro Thr Leu Trp 20 25 30 Ala Glu Pro
Gly Ser Val Ile Ile Gln Gly Ser Pro Val Thr Leu Arg 35 40 45 Cys
Gln Gly Ser Leu Gln Ala Glu Glu Tyr His Leu Tyr Arg Glu Asn 50 55
60 Lys Ser Ala Ser Trp Val Arg Arg Ile Gln Glu Pro Gly Lys Asn
Gly65 70 75 80 Gln Phe Pro Ile Pro Ser Ile Thr Trp Glu His Ala Gly
Arg Tyr His 85 90 95 Cys Gln Tyr Tyr Ser His Asn His Ser Ser Glu
Tyr Ser Asp Pro Leu 100 105 110Glu Leu Val Val Thr Gly Ala Tyr Ser
Lys Pro Thr Leu Ser Ala Leu 115 120 125 Pro Ser Pro Val Val Thr Leu
Gly Gly Asn Val Thr Leu Gln Cys Val 130 135 140 Ser Gln Val Ala Phe
Asp Gly Phe Ile Leu Cys Lys Glu Gly Glu Asp145 150 155 160 Glu His
Pro Gln Arg Leu Asn Ser His Ser His Ala Arg Gly Trp Ser 165 170 175
Trp Ala Ile Phe Ser Val Gly Pro Val Ser Pro Ser Arg Arg Trp Ser 180
185 190 Tyr Arg Cys Tyr Ala Tyr Asp Ser Asn Ser Pro Tyr Val Trp Ser
Leu 195 200 205 Pro Ser Asp Leu Leu Glu Leu Leu Val Pro Gly Val Ser
Lys Lys Pro 210 215 220 Ser Leu Ser Val Gln Pro Gly Pro Met Val Ala
Pro Gly Glu Ser Leu225 230 235 240Thr Leu Gln Cys Val Ser Asp Val
Gly Tyr Asp Arg Phe Val Leu Tyr 245 250 255 Lys Glu Gly Glu Arg Asp
Phe Leu Gln Arg Pro Gly Trp Gln Pro Gln 260 265 270 Ala Gly Leu Ser
Gln Ala Asn Phe Thr Leu Gly Pro Val Ser Pro Ser 275 280 285 His Gly
Gly Gln Tyr Arg Cys Tyr Ser Ala His Asn Leu Ser Ser Glu 290 295 300
Trp Ser Ala Pro Ser Asp Pro Leu Asp Ile Leu Ile Thr Gly Gln Phe305
310 315 320Tyr Asp Arg Pro Ser Leu Ser Val Gln Pro Val Pro Thr Val
Ala Pro 325 330 335 Gly Lys Asn Val Thr Leu Leu Cys Gln Ser Arg Gly
Gln Phe His Thr 340 345 350Phe Leu Leu Thr Lys Glu Gly Ala Gly His
Pro Pro Leu His Leu Arg 355 360 365Ser Glu His Gln Ala Gln Gln Asn
Gln Ala Glu Phe Arg Met Gly Pro 370 375 380 Val Thr Ser Ala His Val
Gly Thr Tyr Arg Cys Tyr Ser Ser Leu Ser385 390 395 400Ser Asn Pro
Tyr Leu Leu Ser Leu Pro Ser Asp Pro Leu Glu Leu Val 405 410 415 Val
Ser Ala Ser Leu Gly Gln His Pro Gln Asp Tyr Thr Val Glu Asn 420 425
430 Leu Ile Arg Met Gly Val Ala Gly Leu Val Leu Val Val Leu Gly Ile
435 440 445 Leu 82439PRTHomo sapiens 82Met Thr Ser Ile Leu Thr Val
Leu Ile Cys Leu Gly Leu Ser Leu Asp1 5 10 15Pro Arg Thr His Val Gln
Ala Gly Pro Leu Pro Lys Pro Thr Leu Trp 20 25 30 Ala Glu Pro Gly
Ser Val Ile Thr Gln Gly Ser Pro Val Thr Leu Arg 35 40 45 Cys Gln
Gly Ser Leu Glu Thr Gln Glu Tyr His Leu Tyr Arg Glu Lys 50 55 60
Lys Thr Ala Leu Trp Ile Thr Arg Ile Pro Gln Glu Leu Val Lys Lys65
70 75 80 Gly Gln Phe Pro Ile Leu Ser Ile Thr Trp Glu His Ala Gly
Arg Tyr 85 90 95 Cys Cys Ile Tyr Gly Ser His Thr Val Gly Leu Ser
Glu Ser Ser Asp 100 105 110Pro Leu Glu Leu Val Val Thr Gly Ala Tyr
Ser Lys Pro Thr Leu Ser 115 120 125Ala Leu Pro Ser Pro Val Val Thr
Ser Gly Gly Asn Val Thr Ile Gln 130 135 140 Cys Asp Ser Gln Val Ala
Phe Asp Gly Phe Ile Leu Cys Lys Glu Gly145 150 155 160Glu Asp Glu
His Pro Gln Cys Leu Asn Ser His Ser His Ala Arg Gly 165 170 175 Ser
Ser Arg Ala Ile Phe Ser Val Gly Pro Val Ser Pro Ser Arg Arg 180 185
190Trp Ser Tyr Arg Cys Tyr Gly Tyr Asp Ser Arg Ala Pro Tyr Val Trp
195 200 205 Ser Leu Pro Ser Asp Leu Leu Gly Leu Leu Val Pro Gly Val
Ser Lys 210 215 220Lys Pro Ser Leu Ser Val Gln Pro Gly Pro Val Val
Ala Pro Gly Glu225 230 235 240Lys Leu Thr Phe Gln Cys Gly Ser Asp
Ala Gly Tyr Asp Arg Phe Val 245 250 255 Leu Tyr Lys Glu Trp Gly Arg
Asp Phe Leu Gln Arg Pro Gly Arg Gln 260 265 270 Pro Gln Ala Gly Leu
Ser Gln Ala Asn Phe Thr Leu Gly Pro Val Ser 275 280 285 Arg Ser Tyr
Gly Gly Gln Tyr Thr Cys Ser Gly Ala Tyr Asn Leu Ser 290 295 300 Ser
Glu Trp Ser Ala Pro Ser Asp Pro Leu Asp Ile Leu Ile Thr Gly305 310
315 320Gln Ile Arg Ala Arg Pro Phe Leu Ser Val Arg Pro Gly Pro Thr
Val 325 330 335 Ala Ser Gly Glu Asn Val Thr Leu Leu Cys Gln Ser Gln
Gly Gly Met 340 345 350 His Thr Phe Leu Leu Thr Lys Glu Gly Ala Ala
Asp Ser Pro Leu Arg 355 360 365 Leu Lys Ser Lys Arg Gln Ser His Lys
Tyr Gln Ala Glu Phe Pro Met 370 375 380 Ser Pro Val Thr Ser Ala His
Ala Gly Thr Tyr Arg Cys Tyr Gly Ser385 390 395 400Leu Ser Ser Asn
Pro Tyr Leu Leu Thr His Pro Ser Asp Pro Leu Glu 405 410 415 Leu Val
Val Ser Gly Ala Ala Glu Thr Leu Ser Pro Pro Gln Asn Lys 420 425 430
Ser Asp Ser Lys Ala Gly Glu 43583478PRTHomo sapiens 83Met Thr Pro
Ile Leu Thr Val Leu Ile Cys Leu Gly Leu Ser Leu Gly 1 5 10 15Pro
Arg Thr His Val Gln Ala Gly His Leu Pro Lys Pro Thr Leu Trp 20 25
30 Ala Glu Pro Gly Ser Val Ile Thr Gln Gly Ser Pro Val Thr Leu Arg
35 40 45 Cys Gln Gly Gly Gln Glu Thr Gln Glu Tyr Arg Leu Tyr Arg
Glu Lys 50 55 60 Lys Thr Ala Pro Trp Ile Thr Arg Ile Pro Gln Glu
Leu Val Lys Lys 65 70 75 80 Gly Gln Phe Phe Ile Pro Ser Ile Thr Trp
Glu His Ala Gly Arg Tyr 85 90 95 Arg Cys Tyr Tyr Gly Ser Asp Thr
Ala Gly Arg Ser Glu Ser Ser Asp 100 105 110Pro Leu Glu Leu Val Val
Thr Gly Ala Tyr Ile Lys Pro Thr Leu Ser 115 120 125 Ala Gln Pro Ser
Pro Val Val Asn Ser Gly Gly Asn Val Thr Leu Gln 130 135 140 Cys Asp
Ser Gln Val Ala Phe Asp Gly Phe Ile Leu Cys Lys Glu Gly 145 150 155
160Glu Asp Gly His Pro Gln Cys Leu Asn Ser Gln Pro His Ala Arg Gly
165 170 175 Ser Ser Arg Ala Ile Phe Ser Val Gly Pro Val Ser Pro Ser
Arg Arg 180 185 190 Trp Trp Tyr Arg Cys Tyr Ala Tyr Asp Ser Asn Ser
Pro Tyr Glu Trp 195 200 205 Ser Leu Pro Ser Asp Leu Leu Glu Leu Leu
Val Leu Gly Val Ser Lys 210 215 220 Lys Pro Ser Leu Ser Val Gln Pro
Gly Pro Ile Val Ala Pro Glu Glu 225 230 235 240Thr Leu Thr Leu Gln
Cys Gly Ser Asp Ala Gly Tyr Asn Arg Phe Val 245 250 255Leu Tyr Lys
Asp Gly Glu Arg Asp Phe Leu Gln Leu Ala Gly Ala Gln 260 265 270 Pro
Gln Ala Gly Leu Ser Gln Ala Asn Phe Thr Leu Gly Pro Val Ser 275 280
285 Arg Ser Tyr Gly Gly Gln Tyr Arg Cys Tyr Gly Ala His Asn Leu Ser
290 295 300 Ser Glu Trp Ser Ala Pro Ser Asp Pro Leu Asp Ile Leu Ile
Ala Gly 305 310 315 320Gln Phe Tyr Asp Arg Val Ser Leu Ser Val Gln
Pro Gly Pro Thr Val 325 330 335Ala Ser Gly Glu Asn Val Thr Leu Leu
Cys Gln Ser Gln Gly Trp Met 340 345 350Gln Thr Phe Leu Leu Thr Lys
Glu Gly Ala Ala Asp Asp Pro Trp Arg 355 360 365 Leu Arg Ser Thr Tyr
Gln Ser Gln Lys Tyr Gln Ala Glu Phe Pro Met 370 375 380 Gly Pro Val
Thr Ser Ala His Ala Gly Thr Tyr Arg Cys Tyr Gly Ser 385 390 395
400Gln Ser Ser Lys Pro Tyr Leu Leu Thr His Pro Ser Asp Pro Leu
Glu 405 410 415 Leu Val Val Ser Gly Pro Ser Gly Gly Pro Ser Ser Pro
Thr Thr Gly 420 425 430 Pro Thr Ser Thr Ser Gly Pro Glu Asp Gln Pro
Leu Thr Pro Thr Gly 435 440 445Ser Asp Pro Gln Ser Gly Leu Gly Arg
His Leu Gly Val Val Ile Gly 450 455 460 Ile Leu Val Ala Val Ile Leu
Leu Leu Leu Leu Leu Leu Leu 465 470 47584478PRTHomo sapiens 84Met
Thr Pro Ile Val Thr Val Leu Ile Cys Leu Gly Leu Ser Leu Gly1 5 10
15Pro Arg Thr His Val Gln Thr Gln Thr Ile Pro Lys Pro Thr Leu Trp
20 25 30 Ala Glu Pro Asp Ser Val Ile Thr Gln Gly Ser Pro Val Thr
Leu Ser 35 40 45Cys Gln Gly Ser Leu Glu Ala Gln Glu Tyr Arg Leu Tyr
Arg Glu Lys 50 55 60 Lys Ser Ala Ser Trp Ile Thr Arg Ile Arg Pro
Glu Leu Val Lys Asn 65 70 75 80Gly Gln Phe His Ile Pro Ser Ile Thr
Trp Glu His Thr Gly Arg Tyr 85 90 95Gly Cys Gln Tyr Tyr Ser Arg Ala
Arg Trp Ser Glu Leu Ser Asp Pro 100 105 110Leu Val Leu Val Met Thr
Gly Ala Tyr Pro Lys Pro Thr Leu Ser Ala 115 120 125Gln Pro Ser Pro
Val Val Thr Ser Gly Gly Arg Val Thr Leu Gln Cys 130 135 140 Glu Ser
Gln Val Ala Phe Gly Gly Phe Ile Leu Cys Lys Glu Gly Glu 145 150 155
160Asp Glu His Pro Gln Cys Leu Asn Ser Gln Pro His Ala Arg Gly Ser
165 170 175Ser Arg Ala Ile Phe Ser Val Gly Pro Val Ser Pro Asn Arg
Arg Trp 180 185 190Ser His Arg Cys Tyr Gly Tyr Asp Leu Asn Ser Pro
Tyr Val Trp Ser 195 200 205Ser Pro Ser Asp Leu Leu Glu Leu Leu Val
Pro Gly Val Ser Lys Lys 210 215 220 Pro Ser Leu Ser Val Gln Pro Gly
Pro Val Val Ala Pro Gly Glu Ser 225 230 235 240Leu Thr Leu Gln Cys
Val Ser Asp Val Gly Tyr Asp Arg Phe Val Leu 245 250 255Tyr Lys Glu
Gly Glu Arg Asp Leu Arg Gln Leu Pro Gly Arg Gln Pro 260 265 270Gln
Ala Gly Leu Ser Gln Ala Asn Phe Thr Leu Gly Pro Val Ser Arg 275 280
285 Ser Tyr Gly Gly Gln Tyr Arg Cys Tyr Gly Ala Tyr Asn Leu Ser Ser
290 295 300Glu Trp Ser Ala Pro Ser Asp Pro Leu Asp Ile Leu Ile Thr
Gly Gln305 310 315 320Ile His Gly Thr Pro Phe Ile Ser Val Gln Pro
Gly Pro Thr Val Ala 325 330 335Ser Gly Glu Asn Val Thr Leu Leu Cys
Gln Ser Trp Arg Gln Phe His 340 345 350Thr Phe Leu Leu Thr Lys Ala
Gly Ala Ala Asp Ala Pro Leu Arg Leu 355 360 365Arg Ser Ile His Glu
Tyr Pro Lys Tyr Gln Ala Glu Phe Pro Met Ser 370 375 380Pro Val Thr
Ser Ala His Ala Gly Thr Tyr Arg Cys Tyr Gly Ser Leu385 390 395
400Asn Ser Asp Pro Tyr Leu Leu Ser His Pro Ser Glu Pro Leu Glu Leu
405 410 415Val Val Ser Gly Pro Ser Met Gly Ser Ser Pro Pro Pro Thr
Gly Pro 420 425 430Ile Ser Thr Pro Ala Gly Pro Glu Asp Gln Pro Leu
Thr Pro Thr Gly 435 440 445Ser Asp Pro Gln Ser Gly Leu Gly Arg His
Leu Gly Val Val Ile Gly 450 455 460Ile Leu Val Ala Val Val Leu Leu
Leu Leu Leu Leu Leu Leu 465 470 47585476PRTHomo sapiens 85Met Thr
Leu Thr Leu Ser Val Leu Ile Cys Leu Gly Leu Ser Val Gly1 5 10 15Pro
Arg Thr Cys Val Gln Ala Gly Thr Leu Pro Lys Pro Thr Leu Trp 20 25
30Ala Glu Pro Ala Ser Val Ile Ala Arg Gly Lys Pro Val Thr Leu Trp
35 40 45Cys Gln Gly Pro Leu Glu Thr Glu Glu Tyr Arg Leu Asp Lys Glu
Gly 50 55 60Leu Pro Trp Ala Arg Lys Arg Gln Asn Pro Leu Glu Pro Gly
Ala Lys 65 70 75 80Ala Lys Phe His Ile Pro Ser Thr Val Tyr Asp Ser
Ala Gly Arg Tyr 85 90 95Arg Cys Tyr Tyr Glu Thr Pro Ala Gly Trp Ser
Glu Pro Ser Asp Pro 100 105 110Leu Glu Leu Val Ala Thr Gly Phe Tyr
Ala Glu Pro Thr Leu Leu Ala 115 120 125Leu Pro Ser Pro Val Val Ala
Ser Gly Gly Asn Val Thr Leu Gln Cys 130 135 140Asp Thr Leu Asp Gly
Leu Leu Thr Phe Val Leu Val Glu Glu Glu Gln 145 150 155 160Lys Leu
Pro Arg Thr Leu Tyr Ser Gln Lys Leu Pro Lys Gly Pro Ser 165 170
175Gln Ala Leu Phe Pro Val Gly Pro Val Thr Pro Ser Cys Arg Trp Arg
180 185 190Phe Arg Cys Tyr Tyr Tyr Tyr Arg Lys Asn Pro Gln Val Trp
Ser Asn 195 200 205Pro Ser Asp Leu Leu Glu Ile Leu Val Pro Gly Val
Ser Arg Lys Pro 210 215 220Ser Leu Leu Ile Pro Gln Gly Ser Val Val
Ala Arg Gly Gly Ser Leu 225 230 235 240Thr Leu Gln Cys Arg Ser Asp
Val Gly Tyr Asp Ile Phe Val Leu Tyr 245 250 255Lys Glu Gly Glu His
Asp Leu Val Gln Gly Ser Gly Gln Gln Pro Gln 260 265 270Ala Gly Leu
Ser Gln Ala Asn Phe Thr Leu Gly Pro Val Ser Arg Ser 275 280 285His
Gly Gly Gln Tyr Arg Cys Tyr Gly Ala His Asn Leu Ser Pro Arg 290 295
300Trp Ser Ala Pro Ser Asp Pro Leu Asp Ile Leu Ile Ala Gly Leu Ile
305 310 315 320Pro Asp Ile Pro Ala Leu Ser Val Gln Pro Gly Pro Lys
Val Ala Ser 325 330 335Gly Glu Asn Val Thr Leu Leu Cys Gln Ser Trp
His Gln Ile Asp Thr 340 345 350Phe Phe Leu Thr Lys Glu Gly Ala Ala
His Pro Pro Leu Cys Leu Lys 355 360 365Ser Lys Tyr Gln Ser Tyr Arg
His Gln Ala Glu Phe Ser Met Ser Pro 370 375 380Val Thr Ser Ala Gln
Gly Gly Thr Tyr Arg Cys Tyr Ser Ala Ile Arg 385 390 395 400Ser Tyr
Pro Tyr Leu Leu Ser Ser Pro Ser Tyr Pro Gln Glu Leu Val 405 410
415Val Ser Gly Pro Ser Gly Asp Pro Ser Leu Ser Pro Thr Gly Ser Thr
420 425 430Pro Thr Pro Gly Pro Glu Asp Gln Pro Leu Thr Pro Thr Gly
Leu Asp 435 440 445Pro Gln Ser Gly Leu Gly Arg His Leu Gly Val Val
Thr Gly Val Ser 450 455 460Val Ala Phe Val Leu Leu Leu Phe Leu Leu
Leu Phe465 470 47586416PRTHomo sapiens 86Met Ile Pro Thr Phe Thr
Ala Leu Leu Cys Leu Gly Leu Ser Leu Gly 1 5 10 15Pro Arg Thr Asp
Met Gln Ala Gly Pro Leu Pro Lys Pro Thr Leu Trp 20 25 30Ala Glu Pro
Gly Ser Val Ile Ser Trp Gly Asn Ser Val Thr Ile Trp 35 40 45Cys Gln
Gly Thr Leu Glu Ala Arg Glu Tyr Arg Leu Asp Lys Glu Glu 50 55 60Ser
Pro Ala Pro Trp Asp Arg Gln Asn Pro Leu Glu Pro Lys Asn Lys 65 70
75 80Ala Arg Phe Ser Ile Pro Ser Met Thr Glu Asp Tyr Ala Gly Arg
Tyr 85 90 95Arg Cys Tyr Tyr Arg Ser Pro Val Gly Trp Ser Gln Pro Ser
Asp Pro 100 105 110Leu Glu Leu Val Met Thr Gly Ala Tyr Ser Lys Pro
Thr Leu Ser Ala 115 120 125Leu Pro Ser Pro Leu Val Thr Ser Gly Lys
Ser Val Thr Leu Leu Cys 130 135 140Gln Ser Arg Ser Pro Met Asp Thr
Phe Leu Leu Ile Lys Glu Arg Ala 145 150 155 160Ala His Pro Leu Leu
His Leu Arg Ser Glu His Gly Ala Gln Gln His 165 170 175Gln Ala Glu
Phe Pro Met Ser Pro Val Thr Ser Val His Gly Gly Thr 180 185 190Tyr
Arg Cys Phe Ser Ser His Gly Phe Ser His Tyr Leu Leu Ser His 195 200
205Pro Ser Asp Pro Leu Glu Leu Ile Val Ser Gly Ser Leu Glu Gly Pro
210 215 220Arg Pro Ser Pro Thr Arg Ser Val Ser Thr Ala Ala Gly Pro
Glu Asp 225 230 235 240Gln Pro Leu Met Pro Thr Gly Ser Val Pro His
Ser Gly Leu Arg Arg 245 250 255His Trp Glu Val Leu Ile Gly Val Leu
Val Val Ser Ile Leu Leu Leu 260 265 270Ser Leu Leu Leu Phe Leu Leu
Leu Gln His Trp Arg Gln Gly Lys His 275 280 285Arg Thr Leu Ala Gln
Arg Gln Ala Asp Phe Gln Arg Pro Pro Gly Ala 290 295 300Ala Glu Pro
Glu Pro Lys Asp Gly Gly Leu Gln Arg Arg Ser Ser Pro 305 310 315
320Ala Ala Asp Val Gln Gly Glu Asn Phe Cys Ala Ala Val Lys Asn Thr
325 330 335Gln Pro Glu Asp Gly Val Glu Met Asp Thr Arg Gln Ser Pro
His Asp 340 345 350Glu Asp Pro Gln Ala Val Thr Tyr Ala Lys Val Lys
His Ser Arg Pro 355 360 365Arg Arg Glu Met Ala Ser Pro Pro Ser Pro
Leu Ser Gly Glu Phe Leu 370 375 380Asp Thr Lys Asp Arg Gln Ala Glu
Glu Asp Arg Gln Met Asp Thr Glu 385 390 395 400Ala Ala Ala Ser Glu
Ala Pro Gln Asp Val Thr Tyr Ala Arg Leu His 405 410 415
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