U.S. patent application number 12/128891 was filed with the patent office on 2009-01-29 for cosmetic use of an active agent capable of stimulating tensin 1 expression.
This patent application is currently assigned to CHANEL PARFUMS BEAUTE. Invention is credited to Francois Xavier Bernard, Yannick Maestro, Gaelle Saintigny.
Application Number | 20090028897 12/128891 |
Document ID | / |
Family ID | 38884535 |
Filed Date | 2009-01-29 |
United States Patent
Application |
20090028897 |
Kind Code |
A1 |
Maestro; Yannick ; et
al. |
January 29, 2009 |
COSMETIC USE OF AN ACTIVE AGENT CAPABLE OF STIMULATING TENSIN 1
EXPRESSION
Abstract
A cosmetic skincare process intended to prevent and/or treat at
least one cutaneous sign of aging, includes the topical application
to the skin of a composition containing at least one active agent
capable of stimulating tensin 1 expression. The cosmetic use of an
active agent capable of stimulating tensin 1 expression, for
preventing and/or treating at least one cutaneous sign of aging, an
extract of elemi or of Canarium indicum L. or of Canarium luzonicum
or of Canarium commune and a cosmetic composition containing the
extract are also disclosed.
Inventors: |
Maestro; Yannick;
(Martigues, FR) ; Saintigny; Gaelle; (Paris,
FR) ; Bernard; Francois Xavier; (Saint-Maurice La
Clouere, FR) |
Correspondence
Address: |
YOUNG & THOMPSON
209 Madison Street, Suite 500
ALEXANDRIA
VA
22314
US
|
Assignee: |
CHANEL PARFUMS BEAUTE
Neuilly Sur Seine
FR
|
Family ID: |
38884535 |
Appl. No.: |
12/128891 |
Filed: |
May 29, 2008 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60941730 |
Jun 4, 2007 |
|
|
|
Current U.S.
Class: |
424/195.16 ;
424/770; 514/1.1 |
Current CPC
Class: |
A61P 17/18 20180101;
A61P 39/06 20180101; A61P 17/00 20180101; A61K 8/9728 20170801;
A61P 43/00 20180101; A61P 17/16 20180101; A61K 8/64 20130101; A61K
8/9717 20170801; A61K 8/9789 20170801; A61Q 19/08 20130101; A61K
8/9722 20170801 |
Class at
Publication: |
424/195.16 ;
424/770; 514/12 |
International
Class: |
A61K 8/97 20060101
A61K008/97; A61K 8/65 20060101 A61K008/65; A61K 8/64 20060101
A61K008/64; A61Q 19/08 20060101 A61Q019/08 |
Foreign Application Data
Date |
Code |
Application Number |
May 29, 2007 |
FR |
0703790 |
Claims
1. A cosmetic skincare process, intended to prevent and/or treat at
least one cutaneous sign of aging, comprising the topical
application to the skin of a composition containing at least one
active agent capable of stimulating tensin 1 expression.
2. The process as claimed in claim 1, which is intended to prevent
and/or combat slackening of the skin.
3. The process as claimed in claim 1, which is carried out on
elderly skin.
4. The process as claimed in claim 1, wherein the active agent is
an extract of elemi or of Canarium indicum L. or of Canarium
luzonicum or of Canarium commune.
5. The process as claimed in claim 4, wherein the active agent can
be obtained according to a process comprising: a) hydrodistillation
of the gum or of the resin of the plant, b) elimination of the
essential oils, c) extraction of the hydrodistillation residues
using a polar organic solvent/other than water, having a polarity
index of greater than 3.5, such as an alcohol, in particular
methanol, ethanol or isopropanol.
6. The process as claimed in claim 1, wherein the composition also
contains at least one additional active agent which stimulates the
synthesis of extracellular macromolecules such as collagen IV
and/or hyaluronan and/or fibronectin.
7. The process as claimed in claim 6, wherein the additional active
agent is an acyl oligopeptide.
8. The process as claimed in claim 1, wherein the composition also
contains at least one active agent chosen from: agents for
stimulating elastin synthesis and anti-elastase agents, and
mixtures thereof.
9. The process as claimed in claim 8, wherein the anti-elastase
agent is an extract of Chlorella vulgaris.
10. The process as claimed in claim 1, wherein the composition also
contains at least one antioxidant, which is preferably
water-soluble.
11. The process as claimed in claim 10, wherein the antioxidant is
carcinine hydrochloride.
12. (canceled)
13. An extract of elemi or of Canarium indicum L. or of Canarium
luzonicum or of Canarium commune, which can be obtained according
to the process described in claim 5.
14. A cosmetic composition, which comprises, in a cosmetically
acceptable medium, at least one extract as claimed in claim 13.
15. The process as claimed in claim 2, which is carried out on
elderly skin.
16. The process as claimed in claim 2, wherein the active agent is
an extract of elemi or of Canarium indicum L. or of Canarium
luzonicum or of Canarium commune.
17. The process as claimed in claim 3, wherein the active agent is
an extract of elemi or of Canarium indicum L. or of Canarium
luzonicum or of Canarium commune.
18. The process as claimed in claim 2, wherein the composition also
contains at least one additional active agent which stimulates the
synthesis of extracellular macromolecules such as collagen IV
and/or hyaluronan and/or fibronectin.
19. The process as claimed in claim 2, wherein the composition also
contains at least one active agent chosen from: agents for
stimulating elastin synthesis and anti-elastase agents, and
mixtures thereof.
Description
[0001] This is a Non-provisional application of provisional
application, 60/941,730, filed Jun. 4, 2007
[0002] The present invention relates to a cosmetic skincare process
intended to prevent and/or treat at least one cutaneous sign of
aging, comprising the topical application to the skin of a
composition containing at least one active agent capable of
stimulating tensin 1 expression.
[0003] Skin aging is defined by the collection of impairments of
the cutaneous covering, resulting from the accumulation over the
years of progressive modifications of its various constituents and
the disorganization of the existing structures, in particular in
the dermis, which constitutes the support tissue for the skin.
[0004] A decrease in transmembrane interactions between the
components of the extracellular matrix, or ECM (collagens, elastin,
glycosaminoglycans, and in particular fibronectin), and the
intracellular cytoskeleton of the fibroblasts, which consists of
actin filaments, is thus observed in the dermis. These interactions
take place at the level of focal adhesions, which are protein
complexes located on the plasma membrane of the fibroblasts. These
complexes ensure the transmission of bidirectional signals between
the intracellular and extracellular compartments. They play an
essential role in stabilizing the shape of the cells and the
nucleus; in maintaining the organization of the ECM; at the
molecular level, in the equilibrium of tensegrity forces and on the
biochemical function of the cell (D. Ingber, Pour la science [For
science], 1998; Zamir E. et al., J. Cell Sci., 2001). These
complexes mainly comprise an .alpha.5 .mu.l intramembrane integrin,
which is the receptor specific for fibronectin in the ECM and is
directly linked to intracellular proteins. Reduction of the
abovementioned interactions leads to molecular disorganization at
the adhesion sites, and a decrease in the proliferative capacities
of fibroblasts, in their metabolic activity (synthesis of ECM
components) and in their migratory capacity (Sottile et al., Mol.
Biol. Cell., 2002; Katz et al., Mol Bio Cell, 2000). These
dysfunctions are responsible for modifications of the biomechanical
properties of the skin, and in particular for the slackening of the
skin, which is one of the main functional signs of skin aging.
[0005] In order to combat slackening of the skin, various cosmetic
ingredients for stimulating fibroblast proliferation, such as
soybean proteins, or for increasing the synthesis of collagen,
elastin and/or glycosaminoglycans, such as ascorbic acid and its
derivatives, or else for relaxing the facial muscles responsible
for wrinkles and expression lines through the injection of botulin
intoxin, have been proposed in the art.
[0006] Despite their advantage, these solutions are not entirely
satisfactory, since they do not make it possible to treat the
problem of slackening of the skin at the source and, consequently,
in the long term. In order to maintain the cellular metabolic
activity in the dermis and the synthesis of ECM constituents over
the long term, it would be desirable to be able to ensure that good
rigidity and good organization of the ECM and the interactions
between the fibroblasts and their surrounding matrix are
maintained.
[0007] Tensin 1 is a phosphoprotein which binds to the actin
filaments of the cytoskeleton of cells and to the extracellular
matrix, at the level of the above-mentioned focal adhesions (Chen
et al., PNAS, 2001; Takahara et al., J. Histochem. Cytochem., 2004)
and specifically the intracellular portion of the .alpha.5 .mu.l
integrin. In connective tissues and in the dermis, tensin 1 is
known to allow integrins to move along the cell membrane and to
group together, thus entraining the fibronectin associated with
these integrins and modifying the conformation of the fibronectin
molecules so as to promote their polymerization (Pankov et al., J.
Cell. Biol., 2000), the fibronectin itself playing an essential
role in the composition and the stability of the extracellular
matrix, and in particular in maintaining collagen I in the form of
fibrils. The applicant has demonstrated, for the first time, that
tensin 1 is a key protein in the process of the tensioning of the
cells of the dermis (fibroblasts) and, in terms of cell activity,
for increasing the firmness of the skin and for preventing and/or
combating slackening of the skin resulting from the dermal aging
process.
[0008] The applicant has also demonstrated a decrease in tensin 1
expression during aging, leading to disorganization of the ECM, in
particular of fibronectin, and resulting in slackening of the
dermis. It has also demonstrated that contraction of the dermis is
considerably reduced in the absence of tensin. It therefore
appeared to the applicant that the use, in cosmetic compositions,
of active agents capable of stimulating tensin 1 could make it
possible to combat the slackening of the skin observed during
aging.
[0009] Finally, the applicant has, to its credit, developed a
screening test for selecting biological active agents, and in
particular botanical extracts, such as nonoily extracts of plants
of the Canarium genus, capable of acting topically on tensin 1 in
order to stimulate its expression.
[0010] Oily extracts of Canarium are already known as
anti-inflammatory agents for combating wrinkles and loss of skin
firmness (WO 2005/053718). However, it has never yet been
suggested, to the applicant's knowledge, that nonoily extracts of
Canarium can provide a cosmetic anti-aging effect, in particular by
stimulating tensin 1 expression.
[0011] Consequently, a subject of the present invention is a
cosmetic skincare process intended to prevent and/or treat at least
one cutaneous sign of aging, comprising the topical application to
the skin of a composition containing at least one active agent
capable of stimulating tensin 1 expression.
[0012] A subject of the present invention is also the cosmetic use
of an active agent capable of stimulating tensin 1 expression, for
preventing and/or treating at least one cutaneous sign of
aging.
[0013] As a preamble, it is specified that the expression "active
agent capable of stimulating tensin 1 expression" is intended to
mean a compound or (in particular in the case of a botanical
extract) a mixture of compounds capable of stimulating tensin 1
expression compared with a nontreated control, determined in
particular using the method described in example 1 hereinafter,
i.e. by immunofluorescence on a culture of fibroblasts supplemented
with TGF.beta.. Preferably, the increase in labeling compared with
the control is at least 20%.
[0014] The active agents that can be used according to the
invention are advantageously botanical extracts, i.e. active agents
obtained by extraction, using any type of solvent, of any part of a
plant, such as the bark, the wood, the rhizomes, the stems, the
leaves or the flowers, the exudates such as gum-resins or
oleo-gum-resins, for example. Examples of such active agents
include extracts (in particular of resin or gum) of elemi, i.e. of
Canarium indicum L (or Canarium commune L) or of Canarium
luzonicum.
[0015] These active agents may, for example, be obtained according
to a method comprising:
[0016] a) hydrodistillation of the gum or of the resin of the
plant,
[0017] b) elimination of the essential oils,
[0018] c) extraction of the hydrodistillation residues using a
polar organic solvent, other than water, having a polarity index of
greater than 3.5, such as an alcohol, in particular methanol,
ethanol or isopropanol. In all cases, the extraction can be carried
out on all or part of the plant under consideration, which can be
ground or reduced to pieces in the usual manner. The extraction is
generally carried out by immersing or gently stirring the ground
material in one or more of the above-mentioned solvents at
temperatures ranging, for example, from ambient temperature to
100.degree. C., for a period of approximately 30 min to 12 h. The
solution is then preferably filtered in order to remove the
insoluble substances of the plant. Where appropriate, the solvent,
if it is a volatile solvent, for instance ethanol or methanol, is
also removed.
[0019] This extraction step is commonplace in the field of plant
extracts, and those skilled in the art are in a position to adjust
the reaction parameters thereof on the basis of their general
knowledge.
[0020] To the applicant's knowledge, this method nevertheless
results in a novel product when it is applied to elemi. A subject
of the invention is therefore also an extract of elemi or of
Canarium indicum L. or of Canarium luzonicum or of Canarium
commune, characterized in that it can be obtained according to the
method described above.
[0021] A subject of the invention is also a cosmetic composition,
characterized in that it comprises, in a cosmetically acceptable
medium, at least one such extract.
[0022] The active agent capable of stimulating tensin 1 expression
can be used in a proportion of from 0.00001 to 5% by weight,
preferably in a proportion of from 0.0001 to 0.1% by weight, and
more preferably in a proportion of from 0.001 to 0.3% by weight,
relative to the total weight of the composition.
[0023] The cutaneous signs of aging targeted in the present
invention may be signs of chronological (intrinsic) aging or
actinic aging (photoaging). The invention is more particularly
directed toward preventing and/or treating the cutaneous signs
linked to the slowing down of production and/or to the degradation
and/or disorganization of collagen, such as the formation of
wrinkles and fine lines, loss of firmness of the skin and/or dermal
atrophy. The process according to the invention is more
particularly intended to prevent and/or combat slackening of the
skin.
[0024] Preferably, the active agent used according to the
invention, or the composition used in the process according to the
invention, is applied to human skin, in particular to elderly skin,
more particularly to the skin of menopausal women and/or women over
the age of 50, or even over the age of 60.
[0025] The composition containing this active agent may be applied
in the morning and/or the evening, preferably the evening, to the
entire face, neck and, optionally, neck and shoulders, or even
body.
[0026] The composition used according to the invention generally
comprises, in addition to the active agent described above, a
physiologically acceptable and preferably cosmetically acceptable
medium, i.e. a medium which does not cause any sensations of
discomfort (redness, tautness, stinging, etc.) which is
unacceptable to the user.
[0027] This medium generally contains water.
[0028] The composition used according to the invention may be in
any form that is suitable for topical application to the skin, and
in particular in the form of an oil-in-water, water-in-oil or
multiple emulsion (W/O/W or O/W/O), which may optionally be
microemulsions or nanoemulsions, or in the form of an aqueous
dispersion, a solution, an aqueous gel or a powder. It is
preferable for this composition to be in the form of an
oil-in-water emulsion.
[0029] This composition is preferably used as a care or cleansing
product for facial and/or bodily skin and it may in particular be
in the form of a fluid, a gel or a mousse, packaged for example in
a pump-dispenser bottle, an aerosol or a tube, or in form of a
cream packaged, for example, in a jar. As a variant, it may be in
the form of a makeup product, and in particular a foundation or a
loose or compact powder.
[0030] It may contain various adjuvants, such as at least one
compound chosen from: [0031] oils, which may be chosen in
particular from: linear or cyclic, volatile or nonvolatile silicone
oils, such as polydimethylsiloxanes (dimethicones),
polyalkyl-cyclosiloxanes (cyclomethicones) and
polyalkyl-phenylsiloxanes (phenyl dimethicones); synthetic oils
such as fluorooils, alkyl benzoates and branched hydrocarbons such
as polyisobutylene; plant oils, and in particular soybean oil or
jojoba oil; and mineral oils such as liquid paraffin; [0032] waxes,
such as ozokerite, polyethylene wax, beeswax or carnauba wax;
[0033] silicone elastomers obtained in particular by reaction, in
the presence of a catalyst, of a polysiloxane containing at least
one reactive group (in particular hydrogen or vinyl) and bearing at
least one alkyl group (in particular methyl) or a phenyl group, in
a terminal and/or side position, with an organosilicone such as an
organohydrogenpolysiloxane; [0034] surfactants, preferably
emulsifying surfactants, whether they are nonionic, anionic,
cationic or amphoteric, and in particular fatty acid esters of
polyols such as fatty acid esters of glycerol, fatty acid esters of
sorbitan, fatty acid esters of polyethylene glycol and fatty acid
esters of sucrose; fatty alcohol ethers of polyethylene glycol;
alkylpolyglucosides; polysiloxane-modified polyethers; betaine and
derivatives thereof; polyquaterniums; ethoxylated fatty alcohol
sulfate salts; sulfosuccinates; sarcosinates; alkyl and dialkyl
phosphates, and salts thereof; and fatty acid soaps; [0035]
cosurfactants such as linear fatty alcohols and in particular cetyl
alcohol and stearyl alcohol; [0036] thickeners and/or gelling
agents, and in particular crosslinked or noncrosslinked,
hydrophilic or amphiphilic homopolymers and copolymers, of
acrylamidomethylpropane sulfonic acid (AMPS) and/or of acrylamide
and/or of acrylic acid and/or of acrylic acid salts or esters;
xanthan gum or guar gum; cellulosic derivatives; and silicone gums
(dimethiconol); [0037] humectants, such as polyols, including
glycerol, propylene glycol and sugars, and glycosaminoglycans such
as hyaluronic acid and salts and esters thereof; [0038] organic
screening agents, such as dibenzoylmethane derivatives (including
butylmethoxydibenzoylmethane), cinammic acid derivatives (including
ethylhexyl methoxycinnamate), salicylates, para-aminobenzoic acids,
.beta.,.beta.-diphenyl acrylates, benzophenones, benzylidenecamphor
derivatives, phenylbenzimidazoles, triazines, phenylbenzotriazoles
and anthranilic derivatives; [0039] inorganic screening agents,
based on mineral oxides in the form of coated or uncoated pigments
or nanopigments, and in particular based on titanium dioxide or
zinc oxide; [0040] dyes; [0041] preservatives; [0042] sequestering
agents such as EDTA salts; [0043] fragrances; [0044] and mixtures
thereof, without this list being limiting.
[0045] The composition may also contain at least one compound with
an optical effect such as fillers, pigments, nacres, tensioning
agents and mattifying polymers, and mixtures thereof.
[0046] The term "fillers" should be understood as meaning colorless
or white, mineral or synthetic, lamellar or non-lamellar particles
suitable for giving the composition body or rigidity and/or
softness, a matt effect and uniformity immediately on application.
Fillers that may especially be mentioned include talc, mica,
alumina, silica, kaolin, Nylon.RTM. powders such as Nylon-12
(Orgasol.RTM. sold by the company Atochem), polyethylene powders,
polyurethane powders, polystyrene powders, polyester powders,
optionally modified starch, silicone resin microbeads such as those
sold by the company Toshiba under the name Tospearl.RTM.,
hydroxyapatite, hollow silica microspheres (Silica Beads.RTM. from
the company Maprecos) and calcined alumina (Spectral PC-401).
[0047] The term "pigments" should be understood as meaning white or
colored, mineral or organic particles that are insoluble in the
medium, and which are intended to color and/or opacify the
composition. They may be of standard or nanometric size. Among the
mineral pigments that may be mentioned are titanium dioxide,
zirconium dioxide and cerium dioxide, and also zinc oxide, iron
oxide and chromium oxide.
[0048] The term "nacres" should be understood as meaning iridescent
particles that reflect light. Among the nacres that may be
envisaged, mention may be made of natural mother-of-pearl, mica
coated with titanium oxide, with iron oxide, with natural pigment
or with bismuth oxychloride, and also colored titanium mica.
[0049] The mass concentration in the aqueous phase of these fillers
and/or pigments and/or nacres is generally from 0.1% to 20% and
preferably from 0.2% to 7% by weight relative to the total weight
of the composition.
[0050] The term "tensioning agent" should be understood as meaning
a compound suitable for making the skin taut and, by means of this
tension effect, making the skin smooth and reducing or even
immediately eliminating wrinkles and fine lines therefrom.
Tensioning agents that may be mentioned include polymers of natural
origin. The term "polymer of natural origin" means polymers of
plant origin, vegetable, algae or bacterial sources, and
biotechnology synthesized proteins, polymers derived from
integuments, egg proteins and latices of natural origin. These
polymers are preferably hydrophilic. Polymers of plant origin that
may especially be mentioned include proteins and protein
hydrolyzates, particularly extracts of cereals, of legumes and of
oil-yielding plants, such as extracts of corn, of rye, of wheat, of
buckwheat, of sesame, of spelt, of pea, of bean, of lentil, of
soybean and of lupin; and more particularly water-soluble proteins
derived from almond (prunus amygdallus dulcis (sweet almond) seed
extract), which are sold by Silab under the name Polylift BG.RTM..
The synthetic polymers are generally in the form of a latex or a
pseudolatex and may be of polycondensate type or obtained by
free-radical polymerization. Mention may be made especially of
polyester/polyurethane and polyether/polyurethane dispersions.
Preferably, the tensioning agent is a copolymer of PVP/dimethiconyl
acrylate and of hydrophilic polyurethane (Aquamere S-2001.RTM. from
the company Hydromer).
[0051] The term "mattifying polymers" means herein any polymer in
solution, in dispersion or in the form of particles, which reduces
the sheen of the skin and which unifies the complexion. Examples
that may be mentioned include silicone elastomers; resin particles;
and mixtures thereof. Examples of silicone elastomers that may be
mentioned include the products sold under the name KSG.RTM. by the
company Shin-Etsu, under the name Trefil.RTM., BY29.RTM. or
EPSX.RTM. by the company Dow Corning or under the name Gransil.RTM.
by the company Grant Industries.
[0052] The composition used according to the invention may also
comprise active agents other than that which stimulates tensin 1
expression, and in particular at least one active agent chosen
from: agents for stimulating the production of growth factors;
antiglycation or deglycating agents; agents for increasing collagen
synthesis or preventing collagen degradation (anticollagenase
agents, in particular matrix metalloproteinase inhibitors); agents
for increasing elastin synthesis or preventing elastin degradation
(anti-elastase agents); agents for increasing the synthesis of
glycosaminoglycans or of proteoglycans or for preventing their
degradation (antiproteoglycanase agents); agents for stimulating
integrin synthesis by fibroblasts; agents for increasing
keratinocyte proliferation or differentiation; agents for
increasing fibroblast proliferation; depigmenting or antipigmenting
agents; hydration agents; antioxidants, free-radical scavengers or
antipollution agents; agents for increasing epidermal lipid
synthesis; and mixtures thereof, without this list being
limiting.
[0053] Examples of such agents are, in particular: extracts of
plants, and in particular extracts of Chondrus crispus, of Thermus
thermophilus, of Pisum sativum, of Centella asiatica, of
Scenedesmus, of Moringa pterygosperma, of witch hazel, of Castanea
sativa, of Hibiscus sabdriffa, of Polyanthes tuberosa, of Argania
spinosa, of Aloe vera, of Narcissus tarzetta, or of licorice; an
essential oil of Citrus aurantium (Neroli); an extract of a
microalga Chlorella vulgaris which is in particular sold by the
company CODIF under the trade name Dermochlorella.RTM. D/DP;
.alpha.-hydroxy acids such as glycolic acid, lactic acid and citric
acid, and esters thereof; .beta.-hydroxy acids, such as salicylic
acid and derivatives thereof; plant protein hydrolysates (in
particular soybean or hazelnut hydrolysates); acyl oligopeptides;
extracts of yeast, and in particular of Saccharomyces cerevisiae;
extracts of algae, and in particular of Laminaires; vitamins and
derivatives thereof, such as retinyl palmitate, ascorbic acid,
ascorbyl glucoside, magnesium ascorbyl phosphate or sodium ascorbyl
phosphate, ascorbyl palmitate, ascorbyl tetraisopalmitate, ascorbyl
sorbate, tocopherol, tocopheryl acetate and tocopheryl sorbate;
methacryloyloxyethylphosphorylcholine homopolymers and copolymers;
urea; an ether of polyalkylene glycol and glycerin, made for
instance from polyethylene glycol, polypropylene glycol and/or
polybutylene glycol and preferably from a mixture thereof, such as
the product sold by NOF under the trade name Wilbride S-753; sodium
hyaluronate; ceramides and phospholipids; arbutin; kojic acid;
ellagic acid; and mixtures thereof.
[0054] According to a preferred embodiment, the composition used in
the process according to the invention contains at least one active
agent for stimulating the synthesis of extracellular
macromolecules, and in particular of collagen IV and/or of
hyaluronan and/or of fibronectin, such as at least one acyl
oligopeptide. The oligopeptide may in particular be chosen from the
sequences lysyl-threonyl-threonyl-lysyl-serine (SEQ ID NO: 1),
glycyl-histidyl-lysine and glycyl-glutamyl-prolyl-arginine (SEQ ID
NO: 2), and mixtures thereof, modified with an alkanoyl group which
contains at least 6 and preferably at least 10 carbon atoms, in
particular a palmitoyl group. An active agent of this type is in
particular sold by the company Sederma under the trade name
Matrixyl.RTM. 3000.
[0055] As a variant or in addition, the composition used according
to the invention may comprise at least one antioxidant, which is
preferably water-soluble, and which preferably has the property of
reducing hydroperoxides, such as the carcinine hydrochloride which
is in particular sold by the company Exsymol under the trade name
Alistin.RTM..
[0056] As a variant or in addition, the composition used according
to the invention may comprise at least one agent able to increase
the mobility of fibroblasts and keratinocytes and to promote the
production of adhesion proteins and/or cytoskeleton proteins of
human skin (integrin, actin, vimentin), such as opal powder or
hydrated silicon dioxide, which consists of spheres of silica of
fairly regular size between 10 to 800 nm, specifically between 10
to 200 .mu.m and which is sold especially by the company Merck
under the trade name Opal.RTM..
[0057] As a variant or in addition, the composition used according
to the invention may comprise at least one agent able to stimulate
elafin expression in keratinocytes and to protect the extracellular
matrix by preventing the degradation of elastin induced by
elastase, such as a Dilsea carnosa extract (Dumontiaceae family,
red algae), which is sold especially by the company Codif
International under the trade name Dilsea Carnosa.RTM..
[0058] As a variant or in addition, the composition used according
to the invention may comprise at least one agent able to activate
the growth of human fibroblasts and the synthesis of collagen from
dermal fibroblasts, such as a Nyctanthes Abor-Tristis leaf extract
(also called night jasmine or Parijata Flowers), which is sold
especially by the company LSN-Cognis under the trade name Noctiliss
LS 9803.RTM..
[0059] Alternatively or additionally, the composition used
according to the invention may comprise at least one agent that
activates the microcirculation and/or has anti-edematous
properties, such as "acetyl tetrapeptide-5", which allows for the
reduction of eye puffs and is marketed by Lipotec under the trade
name Eyeseryl.RTM.; or such as escin, which is sold by Indena under
the trade name Phytosome Escine/.beta.-sitosterol.RTM..
[0060] The invention will now be illustrated by the following
nonlimiting examples.
EXAMPLES
Example 1
Test for Stimulation of Tensin Expression by Extract of Elemi
(Canarium commune)
[0061] The effect of an extract of elemi (Canarium commune) on
tensin 1 expression was evaluated.
Protocol:
[0062] Preparation of the Extract of Elemi (Canarium commune): This
extract is obtained by hydrodistillation of elemi gums, elimination
of the essential oil obtained, recovery of the distillation
residues (exhausted gums) and ethanolic extraction, filtration and
recovery of the filtrate and evaporation of the ethanol, taking up
with dipropylene glycol and filtration so as to obtain a pasty
liquid extract. The following steps are carried out: 1st step:
Hydrodistillation [0063] a. Insertion of 150 g of crude elemi gum
resin into a conventional hydrodistillation apparatus. [0064] b.
Distillation of the essential oil until exhaustion of the gum
resins. [0065] c. Cooling of the distillation apparatus and
filtration of the distillation residues. [0066] d. Drying of the
exhausted elemi gums.
[0067] The yield from this step is 25% with respect to essential
oil, i.e. 75% with respect to exhausted gum resins.
2nd step: Ethanolic Extraction [0068] a. Insertion into a reactor
of 100 g of exhausted gum with 500 ml of ethanol at 96.3%
(vol/vol). [0069] b. Stirring of the mixture for 1 h at 60.degree.
C. [0070] c. Cooling of the solution. [0071] d. Filtration of the
solution through Buchner funnel and recovery of the filtrate.
[0072] e. Evaporation of the ethanol with a rotary evaporator.
[0073] The yield from this second step is 82%.
3rd step: Taking Up with Dipropylene Glycol [0074] a. Insertion
into a reactor of 10 g of the ethanolic extract with 10 g of
dipropylene glycol and 30 ml of ethanol at 96.3% (volume/volume).
[0075] b. Stirring of the mixture for 30 minutes at 50.degree. C.
[0076] c. Cooling of the solution to ambient temperature. [0077] d.
Filtration. [0078] e. Evaporation of the ethanol on a rotary
evaporator. [0079] f. Recovery of 20 g of extract in solution in
dipropylene glycol. An extract containing 50% by weight of
dipropylene glycol is thus obtained.
[0080] The extract thus obtained was subsequently diluted to
0.0003% by weight in the culture medium.
[0081] Test for Stimulation of Tensin 1 Expression:
[0082] Cells (fibroblasts) isolated from skin samples derived from
5 donors, obtained by plastic surgery, were cultured in plastic
microplates using DMEM medium supplemented with 2 mM of
L-glutamine, 50 IU/ml of penicillin, 50 .mu.g/ml of streptomycin
and 10% of fetal calf serum (FCS). The culture medium and the
supplements were obtained from Invitrogen. The stimulation of
tensin 1 expression was controlled after the addition of TGF.beta.
(R&D Systems) at 10 ng/ml.
[0083] The cells were subsequently placed in wells at a rate of
1000 cells per well, on a 96-well plate, and cultured for 72 hours.
Fixing/permeabilization was carried out in a phosphate buffer (PBS,
Invitrogen) containing 4% of paraformaldehyde (Sigma) and 0.1% of
Triton X-100 (Sigma). The saturation, labeling and washing steps
were carried out in PBS containing 0.05% of Tween 20 (Sigma),
possibly supplemented with 5 g/l of dry skimmed milk (saturation).
The monoclonal primary antibody against human tensin 1 (TNS1) comes
from BD Transduction Laboratories. The secondary antibodies coupled
to the Alexa fluor 488 fluorescent agent came from Invitrogen. The
nuclei were stained using a Hoechst dye, bisbenzimide in solution
in PBS/Tween (Sigma). The plates were analyzed using an InCell 1000
analyzer (GE Healthcare). A minimum of 5 fixed zones of each well
were used for the image analysis and at least 3 wells were used for
each of the culture conditions (triplicate). The image analysis was
carried out using the Toolbox 1.5 software (GE Healthcare). After
calibration of the minimum fluorescence threshold, the fluorescence
signal (FS) was expressed as labeled (positive) surface area (in
.mu.m.sup.2) related to the number of cells.
[0084] Results:
[0085] An average labeled surface area of 87138 (.+-.18188)
.mu.m.sup.2 was measured, i.e. a percentage variation of +48%
relative to the nonstimulated control (p<0.05).
[0086] This assay thus shows that the extract of elemi tested
significantly stimulates tensin 1 expression.
Example 2
Immunofluorescence Evaluation of Tensin 1 Expression in Various
Skin Samples
[0087] In a manner similar to example 1, the expression of tensin
1, of .alpha.5 integrin and of fibronectin was compared by
immunofluorescence on cultures of fibroblasts from a skin sample
originating from breast surgery (normal adult human skin, pool of 5
donors 21 to 51 years old, pool PF2) and used either at the 8th
passage (normal fibroblasts), or after artificial aging of the same
skin sample using the Hayflic replicative senescence model (aged
fibroblasts) (Hayflick, L., Clin Geriatr Med, 1985; Hayflick, L.
How and Why We Age, Ballantine Books, 1994) and from a skin sample
from a child (pool of 5 donors 3 to 5 years old) (young
fibroblasts). The normal adult fibroblasts are used as a control.
The protocol used in this study is identical to that described in
example 1. The primary antibodies against human .alpha.5 integrin
(CD49e) and human fibronectin come from Immunotech and from Sigma,
respectively.
[0088] The results are given in table 1 below.
TABLE-US-00001 TABLE 1 Type of human Standard % of Protein
fibroblasts FS (.mu.m.sup.2) deviation control TNS1 Normal 0.225
.+-.0.032 100 Aged 0.153 .+-.0.026 68 (p < 0.01) Young 0.23
.+-.0.022 101 .alpha.5 integrin Normal 0.449 .+-.0.072 100 Aged
0.317 .+-.0.016 71 (p < 0.05) Young 0.459 .+-.0.032 102
Fibronectin Normal 1814 .+-.111 100 Aged 1367 .+-.34 75 (p <
0.01) Young 1921 .+-.125 101
[0089] It is thus observed that the amount of the abovementioned
three proteins is reduced by approximately 30% in the aged cells,
compared with the normal human skin.
[0090] These results thus demonstrate that tensin 1 expression in
human skin decreases with age.
Example 3
RT-QPCR Evaluation of Tensin 1 Expression in Various Skin
Samples
[0091] Protocol:
[0092] After culturing, the cells prepared as described in example
1 were washed in order to remove the serum, and the total RNA was
extracted with a Tri-Reagent.RTM. (Sigma) according to the standard
protocol. Samples (triplicates) were collected and treated with
DNAse using the DNA-free.RTM. system (Ambion). The qualitative and
quantitative analysis of the RNA was carried out using a
Bio-Analyzer (Agilent). The reverse transcriptions (RT; Superscipt
II.RTM. enzyme, Invitrogen) were carried out on 1 .mu.g of DNA-free
total RNA and 10 ng of cDNA were finally used for the purpose of
the analysis by the real-time polymerase chain reaction (PCR)
amplification method (quantitative PCR or QPCR). The QPCR analyses
were carried out using the Light Cycler 480 machine with detection
using the "SYBR Green I Master.RTM." mix. The following primers
were selected from the following GENBANK sequences: G3PDH (NM
002046), TNS1 (NM 022648) and ITGA5 (NM 002205). All the fragments
amplified were unique and were sequenced for identity verification.
The expression values were related to the expression of the G3PDH
housekeeping gene under identical culturing conditions. The results
are expressed as percentage of the respective controls.
[0093] Results:
[0094] The RT-QPCR analysis of TNS1 expression confirmed, after
culturing for 48 hours, the results obtained by immunofluorescence
in example 2. The mRNAs encoding tensin 1 (TNS1) and .alpha.5
integrin (ITGA5) were reduced by approximately 50% for the aged
fibroblasts. The increase in culturing time from 48 to 96 hours
further decreased the relative amount of TNS1 mRNA in the aged
fibroblasts, with the value being 30% of that obtained for the
control (normal skin sample). Conversely, the mRNA encoding tensin
1 represented, for the child fibroblasts, 140% of that of the
control.
[0095] This test thus confirms that tensin and .alpha.5 integrin
expression decreases with age.
Example 4
Effect of Tensin 1 Inactivation
a) Test for Partial Inactivation of TNS1 and Effect on the
Expression and Localization of Markers
[0096] The fibroblasts derived from normal skin samples described
in example 2 were transfected with a total of 90 nM of silencing
RNA (SiRNA Ambion AM 16708A), complexed with a Lipofectamine LTX
(Invitrogen) reagent in an OptiMEM medium (Invitrogen), according
to the supplier's protocol. Three different RNAs that inactivate
human TNS1 (ref 50-52) were tested. An irrelevant silencing RNA and
the transfection reagent without DNA were used as controls. The
silencing RNA ref. 52 (SiRNA ID 139898; sense sequence
CCGAGGCAGGAUAGGAGUUtt (SEQ ID NO: 3)) was chosen based on
preliminary experiments and used for the subsequent inactivation
and functional studies. After transfection, these cells were
treated with 10 ng/ml of TGF.beta., or were not treated. The
analysis of the mRNA (RT-QPCR) and the immunofluorescence analysis
were carried out after 48 hours and 72 hours, respectively, as in
examples 2 and 3.
[0097] The silencing RNA ref. 52 gave the best results, insofar as
it reduced TNS1 expression, measured by quantitative analysis of
the fluorescence signal derived from the RT-QPCR analysis, by 60%.
The inactivation was even greater for the cells stimulated with
TGF.beta.. This level of inactivation was stable for at least 72
hours. It will also be noted that the quantitative levels of
expression of .alpha.5 integrin and of fibronectin (which also
participate in the focal adhesion process) were not affected by the
silencing RNA used. On the other hand, the distribution of the
.alpha.5 integrin and fibronectin fluorescence is altered in the
presence of the silencing RNA ref. 52. In fact, in the latter case,
the fluorescence no longer appears to be concentrated at the focal
adhesion sites. Consequently, the (partial) inactivation of tensin
1 does not change the level of expression of .alpha.5 integrin or
of fibronectin, but changes the distribution of these markers,
which are no longer present at the adhesion sites.
b) Test for Contraction of Collagen Lattices
[0098] The lattices were prepared in 6-well plates,
7.times.10.sup.4 cells (normal, aged and child cells, as described
in example 2) being cultured in a standard medium supplemented with
2.4 mg/well of rat tail collagen I (J Boy Institute), in the
presence and absence of 10 ng/ml of TGF.beta.. The cells
transfected with the silencing RNA were used 48 h after
transfection in the contraction test. After polymerization for 1 h,
the dermal equivalents (DE) were detached manually from their
support and kept floating for 8 hours in the culture medium. The
medium was changed and a computer image analysis was carried out on
days 1, 3, 6 and 8. The surfaces were measured using Lucia 3.0
software (Nikkon).
[0099] Preliminary tests aimed at analyzing the contraction
capacity of the lattices formed by the various fibroblast
populations revealed that the child fibroblasts exhibited the
greatest contraction capacity (1000 mm.sup.2 to 200 mm.sup.2). The
contraction was considerably less in the lattices of aged
fibroblasts (1000 mm.sup.2 to 350 mm.sup.2).
[0100] In order to evaluate a possible involvement of tensin 1 in
the lattice contraction process, lattices were prepared using
normal fibroblasts transfected with the silencing RNA ref. 52
(inactivated TNS1). The lattices containing the fibroblasts treated
with the transfection mixture were used as controls.
[0101] It was clearly observed that the fibroblasts with
inactivated TNS1 exhibited a considerable reduction in their
ability to contract the collagen lattice (1000 mm.sup.2 to 380
mm.sup.2) compared with the controls (1000 mm2 to 200
mm.sup.2).
[0102] This test therefore shows that tensin 1 is involved in the
collagen lattice contraction process.
Example 5
Cosmetic Compositions
[0103] The following compositions can be prepared in a manner
conventional to those skilled in the art. The amounts indicated
below are expressed as percentages by weight.
TABLE-US-00002 5A - SPF 15 Day cream Tetrasodium EDTA 0.10%
UV-screening agents 10.49% Cetyl alcohol 1.00% Glycerol 5.89%
Glycols 0.68% Aqueous-phase gelling agents 1.09% Sodium hyaluronate
0.025% Nonionic emulsifiers 3.00% Emollients 16.93% Elemi
extract.sup.(1) 0.05% Water-glycol solution 1.00% of
decarboxycarnosine hydrochloride.sup.(2) Film-forming polymers
2.70% Palmitoyl oligopeptide - 3.00% Palmitoyl
tetrapeptide-3.sup.(3) Fillers 1.00% Preserving agents 0.80%
Hydrated silica.sup.(4) 0.20% Fragrance qs Dyes qs Water qsp
100.00% .sup.(1)Prepared as described in Example 1 .sup.(2)Alistin
.RTM. from Exsymol .sup.(3)Matrixyl .RTM. 3000 from Sederma
.sup.(4)Opal powder from Merck
TABLE-US-00003 5B - SPF 15 fluid Tetrasodium EDTA 0.10%
UV-screening agents 9.49% Cetearyl alcohol 2.00% Glycerol 2.50%
Glycols 3.68% Aqueous-phase gelling agents 4.63% Hydrating agents
2.53% Nonionic emulsifiers 1.80% Emollients 6.60% Elemi
extract.sup.(1) 0.05% Water-glycol solution 1.00% of
decarboxycarnosine hydrochloride.sup.(2) Film-forming polymers
0.60% Palmitoyl oligopeptide - 3.00% Palmitoyl
tetrapeptide-3.sup.(3) Preserving agents 0.55% Hydrated
silica.sup.(4) 0.20% Fragrance qs Dyes qs Water qsp 100.00%
.sup.(1)Prepared as described in Example 1 .sup.(2)Alistin .RTM.
from Exsymol .sup.(3)Matrixyl .RTM. 3000 from Sederma .sup.(4)Opal
powder from Merck
TABLE-US-00004 5C - Serum Tetrasodium EDTA 0.05% Alcohol 10.00%
Glycerol 4.65% Glycols 0.72% Aqueous-phase gelling agents 1.30%
Nonionic emulsifiers 1.00% Emollients 9.90% Elemi extract.sup.(1)
1.00% Water-glycol solution of decarboxycarnosine 1.00%
hydrochloride.sup.(2) Film-forming polymer 1.00% Palmitoyl
oligopeptide - 3.00% Palmitoyl tetrapeptide-3.sup.(3) Prunus
amygdallus dulcis (sweet almond) 2.00% Seed extract.sup.(4)
Preserving agents 0.21% Hydrated silica.sup.(5) 0.20% Dilsea
carnosa extract.sup.(6) 2.50% Fragrance qs Dyes qs Water qsp
100.00% .sup.(1)Prepared as described in Example 1 .sup.(2)Alistin
.RTM. from Exsymol .sup.(3)Matrixyl .RTM. 3000 from Sederma
.sup.(4)Polylift BG .RTM. from Silab .sup.(5)Opal powder .RTM. from
Merck .sup.(6)Dilsea Carnosa .RTM. from Codif International
TABLE-US-00005 5D - Night cream Tetrasodium EDTA 0.05% Cetearyl
alcohol 4.80% Glycerol 9.13% Glycols 2.68% Aqueous-phase gelling
agents 0.75% Sodium hyaloronate 0.05% Hydrating agents 0.50%
Nonionic emulsifiers 1.80% Emollients 16.45% Elemi extract.sup.(1)
0.05% Water-glycol solution 1.00% of decarboxycarnosine
hydrochloride.sup.(2) Palmitoyl oligopeptide - 3.00% Palmitoyl
tetrapeptide-3.sup.(3) Nyctanthes Abor-Tristis leaf extract.sup.(4)
5.00% Preserving agents 0.25% Fillers 1.96% Fragrance qs Dyes qs
Water qsp 100.00% .sup.(1)Prepared as described in Example 1
.sup.(2)Alistin .RTM. from Exsymol .sup.(3)Matrixyl .RTM. 3000 from
Sederma .sup.(4)Noctiliss LS 9803 .RTM. from LSN-Cognis
TABLE-US-00006 5E - Eye cream Tetrasodium EDTA 0.10% Cetearyl
alcohol 2.00% Glycerol 7.89% Glycols 8.03% Aqueous-phase gelling
agents 0.34% Sodium hyaloronate 0.05% Nonionic emulsifiers 1.25%
Emollients 11.25% Elemi extract.sup.(1) 0.05% Water-glycol solution
1.00% of decarboxycarnosine hydrochloride.sup.(2) Palmitoyl
oligopeptide - 3.00% Palmitoyl tetrapeptide-3.sup.(3) acetyl
tetrapeptide-5.sup.(4) 1.00% Preserving agents 0.30% Fillers 0.26%
Fragrance qs Dyes qs Water qsp 100.00% .sup.(1)Prepared as
described in Example 1 .sup.(2)Alistin .RTM. from Exsymol
.sup.(3)Matrixyl .RTM. 3000 from Sederma .sup.(4)Eyeseryl .RTM.
from Indena
[0104] These compositions can be applied to the face in order to
firm the skin.
Sequence CWU 1
1
315PRTArtificial SequenceDescription of Artificial Sequence
Synthetic peptide 1Lys Thr Thr Lys Ser1 524PRTArtificial
SequenceDescription of Artificial Sequence Synthetic peptide 2Gly
Glu Pro Arg1321DNAArtificial SequenceDescription of Combined
DNA/RNA molecule Syntheticoligonucleotide 3ccgaggcagg auaggaguut t
21
* * * * *