WO2011069913A1 - Method for screening active agents that stimulate the expression of cert to improve the skin's barrier function - Google Patents
Method for screening active agents that stimulate the expression of cert to improve the skin's barrier function Download PDFInfo
- Publication number
- WO2011069913A1 WO2011069913A1 PCT/EP2010/068849 EP2010068849W WO2011069913A1 WO 2011069913 A1 WO2011069913 A1 WO 2011069913A1 EP 2010068849 W EP2010068849 W EP 2010068849W WO 2011069913 A1 WO2011069913 A1 WO 2011069913A1
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- WIPO (PCT)
- Prior art keywords
- skin
- cert
- expression
- active agents
- selecting
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
- G01N33/5008—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics
- G01N33/5044—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics involving specific cell types
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/96—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution
- A61K8/97—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution from algae, fungi, lichens or plants; from derivatives thereof
- A61K8/9783—Angiosperms [Magnoliophyta]
- A61K8/9789—Magnoliopsida [dicotyledons]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
- C12Q1/6883—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6844—Nucleic acid amplification reactions
- C12Q1/6851—Quantitative amplification
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/136—Screening for pharmacological compounds
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/20—Dermatological disorders
Definitions
- the present invention relates to a method for screening an active agent intended for preventing or combating the cutaneous signs resulting from a non-pathological impairment of barrier function, comprising the selection of active agents that stimulate the expression of the ceramide transport protein CERT in cultured human keratinocytes .
- the skin consists mainly of three layers, namely, starting from the uppermost layer, the epidermis, the dermis and the hypodermis.
- the epidermis in particular consists of keratinocytes (predominantly), melanocytes (involved in pigmenting the skin) and Langerhans cells. Its function is to protect the body from the external environment and to ensure its integrity, and especially to halt the penetration of microorganisms or chemical substances, to prevent evaporation of the water contained in the skin and to constitute a barrier against external attack and especially against ultraviolet rays (UV) .
- UV ultraviolet rays
- keratinocytes undergo a process of proliferation and then of continuous directed maturation during which the keratinocytes located in the basal layer of the epidermis form, at the final stage of their differentiation, corneocytes, which are totally keratinized dead cells in the form of horny sheaths consisting of proteins and lipids such as epidermal ceramides.
- corneocytes which are totally keratinized dead cells in the form of horny sheaths consisting of proteins and lipids such as epidermal ceramides.
- intercorneocytic epidermal lipids are also formed and then organized in the form of bilayers (lamellae) in the stratum corneum, and they participate, with the abovementioned horny sheaths, in the barrier function of the epidermis.
- the lipid content of the stratum corneum consists of approximately 50% ceramides, 25% cholesterol, and 15% free fatty acids.
- Epidermal ceramides are synthesized by keratinocytes in a complex, multi-step cascade of reactions which begin in the endoplasmic reticulum (ER) . Ceramides are transported from the ER to the Golgi apparatus for further modification to sphingomyelin through either vesicular or non-vesicular transport. Non-vesicular transport is the major mechanism.
- Sphingomyelin is then transported to lamellar bodies and excreted from the keratinocytes to be further processed in the stratum corneum, during terminal differentiation, into some of the epidermal ceramides which are then incorporated into the lamellar membrane structures that subserve the permeability barrier to water loss (Y. Uchida et al . , Journal of Lipid Research, Vol. 41, 2071-2082, 2000).
- the barrier function of the epidermis may, however, be perturbed under certain climatic conditions (for example under the effect of cold and/or the wind) or under the effect of stress or fatigue, especially, thus promoting the penetration of allergens, irritants or microorganisms.
- These external factors may lead to drying of the skin (the skin loses its permeability, becomes dehydrated and its transepidermal water loss increases), and sensations of heating or redness, and also to impair the radiance of the complexion and the suppleness of the skin. Impairment of the skin barrier may also promote the appearance of microchapping or microcracks .
- a badly formed barrier resulting from impaired proliferation and differentiation processes, no longer protects the skin against UV radiation or any other type of external attack.
- the UV rays penetrating the skin may then produce free radicals which may have a detrimental effect on various targets, such as activate collagenases and elastases which are responsible for the degradation of collagen and elastin, respectively, and thus for a decrease in skin elasticity and firmness and the formation of wrinkles.
- compositions frequently incorporate active agents that act on one or more of the various biological targets involved either in skin turnover processes, in particular in keratinocyte differentiation, epidermal lipid synthesis and corneocyte cohesion, or in the endogenous synthesis of natural moisturizing factor (NMF) constituents of the skin, in particular in the synthesis of proteoglycans .
- active agents that act on one or more of the various biological targets involved either in skin turnover processes, in particular in keratinocyte differentiation, epidermal lipid synthesis and corneocyte cohesion, or in the endogenous synthesis of natural moisturizing factor (NMF) constituents of the skin, in particular in the synthesis of proteoglycans .
- NMF moisturizing factor
- Such active agents are especially a- and ⁇ -hydroxy acids, especially lactic acid, glycolic acid and salicylic acid; urea; and aminosulfonic compounds.
- the Applicant has, to its credit, shown, unexpectedly, that it is possible to act on a novel biological target, namely the ceramide transporter CERT, by stimulating the expression of this protein, in order to combat impairment of the barrier function.
- the Applicant has also, to its credit, developed an appropriate screening test for selecting active agents such as plant extracts acting on this target, thus making it possible to satisfy the abovementioned needs.
- CERT ceramide transport protein has elucidated a novel pathway to deliver ceramides synthesized in the ER to the Golgi for transformation into sphingomyelin (Hanada et al . Nature 426:803-809).
- the protein is identical in sequence, though not proposed function, to the Goodpasture antigen-binding protein (GPBP) splice variant GPBPA26.
- GPBP Goodpasture antigen-binding protein
- Mutation of CERT results in cells with significantly decreased sphingomyelin content.
- CERT mutation resulted in changes in cellular membrane fluidity which resulted in enhanced damage from oxidative stress and reduced organism lifespan (Rao et al. Proc. Nat. Acad. Sci .
- compositions comprising a drug which is a protein having the amino acid sequence of CERT.
- This drug may be used as an antitumor agent, an anti-inflammatory agent, an organoregenesis agent, an anti-infective agent, or a distribution promoting agent used for cosmetics. In the latter case, the drug may be applied onto skin so as to improve its water retention.
- One subject of the present invention is thus a method for screening active agents, which are able to prevent or combat the cutaneous signs resulting from non- pathological impairment of barrier function, comprising the following steps: a) treating a sample of cultured keratinocytes from a human donor with an active agent, such as a botanical extract ;
- step c) preferably comprises selecting the active agents that provide for at least a 1.7 fold increase in the gene expression level of CERT, compared to the untreated sample.
- step c) advantageously comprises selecting the active agents that provide for a CERT protein level which is at least 120% of that expressed by the untreated sample.
- any other means for quantifying the expression of CERT for instance by quantifying the production either of messenger RNA of CERT or of CERT protein, may be used without departing from this invention.
- the active agents that may be selected 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 bark, wood, roots, rhizomes, stalks, leaves, fruit or flowers, for example.
- the extraction may be performed on fresh or dried parts of the plant, optionally chopped or ground, in the usual manner.
- the extraction is generally performed by immersing or gently shaking in one or more polar or apolar solvents or a mixture thereof, at temperatures ranging, for example, from room temperature to 100°C and advantageously from 30 to 70°C, for a time of about 30 minutes to 12 hours and preferably from 1 to 8 hours.
- the resulting solution is then preferably filtered so as to remove the insoluble substances of the plant.
- the solvent is also, where appropriate, removed if it is a volatile solvent, for instance ethanol, methanol or isopropanol.
- the botanical extract may be prepared by extraction using a supercritical fluid such as carbon dioxide .
- it may be obtained by hydro-distillation, i.e. according to a method including a step for extracting vapour distillation residues, after elimination of the essential oils, by using a polar organic solvent having a polarity index greater than 3.5, possibly mixed with an apolar organic solvent having a polarity index less than 1.
- a polar organic solvent having a polarity index greater than 3.5 possibly mixed with an apolar organic solvent having a polarity index less than 1.
- All these extraction methods are common in the field of plant extracts and a person skilled in the art is capable of adjusting the reaction parameters thereof on the basis of his general knowledge.
- a botanical extract is obtained, which may then be subjected to a decolorizing step, especially using active charcoal in the presence of a solvent.
- the weight of active charcoal is preferably between 0.5% and 50% of the weight of the extract.
- One or more solvents chosen from water, C1-C4 alcohols such as methanol, ethanol or isopropanol, polar organic solvents such as propylene glycol or dipropylene glycol, or any other solvent that is common in the field, may especially be used.
- the volatile solvents may then be removed under reduced pressure.
- the skilled person will be able to prepare various botanical extracts, for example by varying the plants and solvents used. Alternatively, plant extracts that are commercially available may be used in this invention. These extracts should then be subjected to screening tests as described above and in the following examples, so as to determine whether any of these botanical extracts provides for an increase in the gene or protein expression level of CERT and may thus be selected according to this invention.
- the active agent selected according to the invention may be used for cosmetic purposes, to prevent or combat the cutaneous signs resulting from non-pathological impairment of the barrier function.
- the above-mentioned method may thus be used for selecting agents capable of protecting skin against signs of dryness such as: skin roughness, the loss of radiance of the complexion and/or the loss of suppleness of the skin ; for protecting skin from the external environment, especially from the damaging effects of UV rays or from the penetration of toxins, drugs, and chemical substances ; and for reducing oxidant load in the skin, when applied topically to human skin.
- the barrier integrity may especially be measured by corneometry, according to usual techniques that are well known to those skilled in the art.
- the screening method of this invention may be used for selecting agents capable of preventing skin photoaging, when applied topically to human skin.
- the active agent selected according to the invention, or the composition containing same are preferably applied to non-pathological dry skin and/or aged skin. They may advantageously be applied to the skin of the face, the neck and possibly the neckline or, as a variant, to any part of the body.
- the active agent is included in the cosmetic composition, for instance in a proportion of from 0.00001% to 10% by weight, preferably in a proportion of from 0.0001% to 5% by weight and more preferably in a proportion of from 0.001% to 1% by weight relative to the total weight of the composition.
- composition containing this active agent may be applied in the morning and/or in the evening, to the entire face, the neck and optionally the neckline or even the body.
- composition generally comprises, besides the active agent described previously, a physiologically acceptable and preferably cosmetically acceptable medium, i.e. a medium that is suitable for use in contact with human skin without any risk of toxicity, incompatibility, instability or allergic response and especially that does not cause any sensations of discomfort (redness, tautness, stinging, etc.) that are unacceptable to the user.
- a physiologically acceptable and preferably cosmetically acceptable medium i.e. a medium that is suitable for use in contact with human skin without any risk of toxicity, incompatibility, instability or allergic response and especially that does not cause any sensations of discomfort (redness, tautness, stinging, etc.) that are unacceptable to the user.
- This medium generally contains water and optionally other solvents such as ethanol.
- the composition containing the active agent selected 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 0/W/O), which may optionally be microemulsions or nanoemulsions , or in the form of an aqueous dispersion, a solution, an aqueous gel or an anhydrous composition. It is preferable for this composition to be in the form of an oil-in-water emulsion.
- This composition is preferably used as a care and/or cleansing product for facial and/or bodily skin and it may especially be in the form of a fluid, a gel or a mousse, conditioned, for example, in a pump-dispenser bottle, an aerosol or a tube, or in the form of cream conditioned, 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.
- oils which may be chosen especially from: linear or cyclic, volatile or non-volatile silicone oils, such as polydimethylsiloxanes (dimethicones ) , polyalkylcyclosiloxanes ( cyclomethicones ) and polyalkylphenylsiloxanes (phenyl dimethicones); synthetic oils such as fluoro oils, alkylbenzoates and branched hydrocarbons such as polyisobutylene ; plant oils and especially soybean oil or jojoba oil; and mineral oils such as liquid petroleum jelly;
- oils which may be chosen especially from: linear or cyclic, volatile or non-volatile silicone oils, such as polydimethylsiloxanes (dimethicones ) , polyalkylcyclosiloxanes ( cyclomethicones ) and polyalkylphenylsiloxanes (phenyl dimethicones); synthetic oils such as fluoro oils, alkylbenzoates and branched hydrocarbons
- waxes such as ozokerite, polyethylene wax, beeswax or carnauba wax;
- silicone elastomers obtained especially by reaction, in the presence of a catalyst, of a polysiloxane containing at least one reactive group (especially hydrogen or vinyl) and bearing at least one alkyl group (especially methyl) or phenyl, in a terminal and/or side position, with an organosilicone such as an organohydrogeno- polysiloxane;
- - 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 alkyl ethers of polyethylene glycol; alkylpolyglucosides ; polysiloxane-modified polyethers; betaine and derivatives thereof; polyquaterniums ; ethoxylated fatty alkyl sulfate salts; sulfosuccinates ; sarcosinates ; alkyl and dialkyl phosphates, and salts thereof; and fatty acid soaps;
- fatty acid esters of polyols such as fatty acid esters of glycerol, fatty acid esters of sorbitan, fatty acid esters of polyethylene glyco
- co-surfactants such as linear fatty alcohols and in particular cetyl alcohol and stearyl alcohol; thickeners and/or gelling agents, and in particular crosslinked or non-crosslinked, hydrophilic or amphiphilic homopolymers and copolymers, of acryloylmethylpropanesulfonic acid (AMPS) and/or of acrylamide and/or of acrylic acid and/or of acrylic acid salts or esters; xanthan gum or guar gum; cellulose derivatives; and silicone gums (dimethiconol ) ;
- AMPS acryloylmethylpropanesulfonic acid
- xanthan gum or guar gum cellulose derivatives
- silicone gums diimethiconol
- organic screening agents such as dibenzoylmethane derivatives (including butylmethoxydibenzoyl- methane) , cinnamic acid derivatives (including ethylhexyl methoxycinnamate ) , salicylates, para- aminobenzoic acids, ⁇ , ⁇ ' -diphenyl acrylates, benzophenones , benzylidenecamphor derivatives, phenylbenzimidazoles, triazines, phenyl- benzotriazoles and anthranilic derivatives;
- 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;
- fillers and in particular powders with a soft- focus effect, which may be chosen especially from polyamides, silica, talc, mica and fibers (especially polyamide fiber or cellulose fiber) ; sequestrants such as EDTA salts;
- fragrances and mixtures thereof, without this list being limiting .
- composition containing the active agent selected according to the invention may also provide additional benefits, including calmative or anti-inflammatory activity, bleaching or depigmenting activity, anti- aging activity and/or cleansing activity.
- This composition may also comprise active agents other than those that stimulate the expression of CERT, and in particular at least one active agent chosen from: keratolytic agents and in particular o-hydroxy acids such as glycolic acid, lactic acid and citric acid, and esters or salts thereof; ⁇ -hydroxy acids such as salicylic acid and derivatives thereof; agents for increasing keratinocyte differentiation and/or cornification, either directly or indirectly by stimulating, for example, the production of ⁇ -endorphins , such as extracts of Thermus thermophilus or extracts of bean husks of Theobroma cacao, water- soluble extracts of corn, peptide extracts of Voandzeia substerranea and niacinamide; epidermal lipids and agents for increasing the synthesis of epidermal lipids, either directly or by stimulating certain
- Example 1 Test for screening active agents by Western blotting
- Keratinocytes derived from neonatal foreskins are inoculated in 6-well plates and cultured in keratinocyte growth culture medium (Epilife, Invitrogen, CA, USA), i.e. a modified culture medium supplemented with Epilife defined growth supplement (EDGS) .
- Epilife, Invitrogen, CA, USA i.e. a modified culture medium supplemented with Epilife defined growth supplement (EDGS) .
- WB Western blotting
- Cells incubated as described above are lysed and the extracted proteins are separated by SDS-PAGE.
- proteins are transferred to a PVDF membrane which is probed with anti-CERT antibody (Bethyl Laboratories, TX, USA) .
- the results are normalized to the amount of total protein in each sample.
- the results are expressed in terms of the percent (%) increase or decrease of expression of the target protein CERT in the treated sample versus the untreated control.
- the total protein content is quantified using the MicroBCA kit (Thermo Scientific, IL, USA) .
- vanilla Planifolia extracts make it possible to stimulate the expression of CERT protein in normal human keratinocytes and may thus be used to improve or restore skin barrier function .
- Example 2 Test for screening active agents by RT-PCR
- Protocol The effect of two active agents on the expression of the mRNA of CERT was evaluated in keratinocytes .
- Keratinocytes derived from neonatal foreskins are inoculated in 6-well plates and cultured in keratinocyte growth culture medium (Epilife, Invitrogen) , i.e. a modified culture medium supplemented with EDGS .
- the real-time PCR measurement is performed using the iCYCLER IQ machine (Bio-Rad, CA, USA) with Taqman probes.
- the PCR primers are obtained from Applied Biosystems (Applied Biosystems, CA, USA) .
- the cDNA is amplified using a standardized program. Each sample is charged with Taqman master-mix, Taqman primers, and water. The final amount of cDNA per reaction corresponds to 75 ng of total RNA used for the reverse transcription.
- the results are normalized relative to the expression of a housekeeping gene in these samples and corrected as regards the differences in efficacy of PCR.
- the housekeeping gene used here was RPLPO .
- the relative quantification of the expression of the target gene is performed using the Pfaffl mathematical model (Pfaffl, MW, Nucleic Acids Res. 29(9), p. E45, 2001).
- the results are expressed in terms of the number of times of increase or of decrease of expression of the target gene CERT in the treated sample.
- the variation in expression of the CERT protein was evaluated by immunohistochemistry (IHC), on paraffin- embedded skin samples from donors of various age groups (Cybrdi, MD, USA and Tissue Array Networks, MD, USA) . Staining was performed on 6 pm sections from donors in 4 age groups (20-30 weeks old, 28-35 years old, 39-49, and 50-69 years old) , with anti-CERT antibodies (Bethyl Laboratories, TX, USA) and secondary antibodies (Lab Vision, CA, USA) . The staining was visualized using the AEC system (Lab Vision) .
- Example 4 Cosmetic composition The following composition may be prepared in a manner that is conventional for those skilled in the art. The amounts indicated below are expressed as weight percentages. The ingredients in upper case are identified in accordance with the INCI name.
- Aqueous-phase gelling agents 5.50
- This composition in the form of an oil-in-water emulsion, may be applied daily, morning and/or evening, to facial skin to moisturize it and make it supple, smooth and luminous .
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US13/514,412 US9228999B2 (en) | 2009-12-07 | 2010-12-03 | Method for screening active agents that stimulate the expression of CERT to improve the skin's barrier function |
ES10787115.4T ES2526540T3 (es) | 2009-12-07 | 2010-12-03 | Método para seleccionar agentes activos que estimulan la expresión de CERT para mejorar las funciones de barrera de la piel |
EP10787115.4A EP2510112B1 (de) | 2009-12-07 | 2010-12-03 | Screeningverfahren für wirkstoffe zur stimulierung der cert-expression zur verbesserung der hautbarrierefunktion |
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WO2014009566A1 (fr) * | 2012-07-13 | 2014-01-16 | Laboratoires Expanscience | Procédé d'identification de marqueurs moléculaires de la peau d'enfant |
FR2993282A1 (fr) * | 2012-07-13 | 2014-01-17 | Expanscience Lab | Procede d'identification de marqueurs moleculaires de la peau d'enfant |
JP2015528699A (ja) * | 2012-07-13 | 2015-10-01 | ラボラトワール エクスパンシアンス | 小児皮膚の分子マーカーの同定方法 |
Also Published As
Publication number | Publication date |
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EP2510112B1 (de) | 2014-11-26 |
US9228999B2 (en) | 2016-01-05 |
ES2526540T3 (es) | 2015-01-13 |
EP2510112A1 (de) | 2012-10-17 |
US20120244545A1 (en) | 2012-09-27 |
JP5847090B2 (ja) | 2016-01-20 |
JP2013512681A (ja) | 2013-04-18 |
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