EP4380544A1 - Principe actif comprenant des oligo-glucanes issus de la fraction cytosolique de saccharomyces cerevisiae et ses utilisations cosmetiques - Google Patents
Principe actif comprenant des oligo-glucanes issus de la fraction cytosolique de saccharomyces cerevisiae et ses utilisations cosmetiquesInfo
- Publication number
- EP4380544A1 EP4380544A1 EP22757970.3A EP22757970A EP4380544A1 EP 4380544 A1 EP4380544 A1 EP 4380544A1 EP 22757970 A EP22757970 A EP 22757970A EP 4380544 A1 EP4380544 A1 EP 4380544A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- active principle
- cosmetic
- extract
- principle according
- saccharomyces cerevisiae
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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- 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
- A61K8/9728—Fungi, e.g. yeasts
-
- 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
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/73—Polysaccharides
-
- 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
- A61Q19/08—Anti-ageing preparations
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0003—General processes for their isolation or fractionation, e.g. purification or extraction from biomass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/06—Lysis of microorganisms
- C12N1/063—Lysis of microorganisms of yeast
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/06—Lysis of microorganisms
- C12N1/066—Lysis of microorganisms by physical processes
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/645—Fungi ; Processes using fungi
- C12R2001/85—Saccharomyces
- C12R2001/865—Saccharomyces cerevisiae
Definitions
- the invention relates to an active principle comprising oligo-glucans, obtained from the cytosolic fraction of a yeast of the species Saccharomyces cerevisiae, a cosmetic composition comprising it and its cosmetic uses, in particular for improving regeneration skin and fight against skin aging.
- the regeneration process for example of the skin, is a dynamic and complex process involving many cellular actors, during which a new tissue develops to restore previously damaged areas and thus ensure its healing.
- the skin tissue is now recognized as a complex organ comprising in particular fibroblasts which play the pivotal role between these three systems to act on epidermal renewal, matrix remodeling, but also on vascularization, thus allowing the regeneration of the damaged tissue.
- the vascular system allows, among other things, the transport of nutrients, mediators and cells, which are essential for skin regeneration. To do this, the endothelial cells migrate to group together in a cohesive manner, in order to form an organized and regular vascular network.
- the fibroblasts secrete growth factors which will act on these systems by activating the proliferation, migration and cell differentiation pathways. These factors act in a paracrine way on the metabolism of surrounding fibroblasts but also on the metabolism of other cell types present in the skin tissue.
- PRP platelet-rich plasma
- the inventor has thus studied the metabolism of aged fibroblasts, but also the metabolism of keratinocytes, endothelial cells and macrophages in the presence of the secretome of aged fibroblasts and observed:
- the inventor has identified a specific active ingredient obtained from a cytosolic fraction of the yeast of Saccharomyces cerevisiae which makes it possible to act on the entire process of skin regeneration.
- yeast hydrolysates from S. cerevisiae. Mention may thus be made of a cosmetic composition comprising mannoproteins derived from the cell wall of yeasts such as Saccharomyces described in EP2567688. Said extract is obtained from a chemical, enzymatic or physicochemical hydrolysis of the wall of the yeasts.
- Application WO 2009/101503 also discloses the use of S. cerevisiae yeast hydrolyzate consisting of proteins from the wall of hydrolyzed yeasts whose molecular weight is between 1 and 5 kDa.
- the solutions already known are particularly aimed at a hydrolyzate of S. cerevisiae and more particularly a hydrolyzate obtained from the wall of the yeast of S. cerevisiae.
- This hydrolyzate is rich in proteins, known to fight against skin aging.
- a yeast is a eukaryotic microorganism, composed of a cell wall surrounding the plasma membrane. This wall consists of an outer layer of mannoproteins associated with glucans and an inner layer of glucans associated with chitins.
- the cytoplasmic membrane is composed mainly of phospholipids and protein complexes. The contents of the cell, including the nucleus and the cytoplasmic organelles, are contained in a liquid phase called the cytosol.
- yeast of Saccharomyces cerevisiae is a unicellular eukaryote well known to those skilled in the art, which is in the form of isolated, ovoid to rounded cells. It has been used since antiquity for the manufacture of fermented drinks. However, it was isolated and identified only in the middle of the 19th century to replace traditional bakers' sourdough through its use in a more reliable and faster fermentation process than sourdough.
- the inventor has surprisingly discovered the effects associated with an extract obtained specifically from the cytosolic fraction of a Saccharomyces cerevisiae yeast.
- Said extract comprising oligo-glucans with a molar mass of between 2 and 5 kDa.
- the invention relates to an active ingredient comprising at least one extract of Saccharomyces cerevisiae, said extract corresponding to the cytosolic fraction comprising oligo-glucans with a molar mass of between 2 and 5 kDa.
- said extract consists of the cytosolic fraction of a Saccharomyces cerevisiae yeast. More preferentially, the extract is a cytosolic fraction obtained by a mechanical lysate of Saccharomyces cerevisiae.
- the invention also relates to a method for preparing the active ingredient according to the invention, comprising in particular a solubilization of Saccharomyces cerevisiae in water by mechanical homogenization, that is to say a mechanical lysate making it possible to to break yeast membranes to extract the cytosolic fraction, separation of the soluble and insoluble phases, ultrafiltration followed by recovery of the filtrate and molecular sorting by ion chromatography or membrane filtration.
- the active principle according to the invention is of natural origin and advantageously exhibits an improvement in skin regeneration.
- the active principle according to the invention promotes the interconnectivity of the cutaneous, vascular and immune system. It acts on these three systems which makes it possible to fight against skin aging by providing a global solution.
- the active ingredient reduces dark circles, wrinkles and improves the radiance of the complexion. It thus responds to the problems of the prior art.
- the active principle according to the invention can be used for cosmetic applications, preferentially when it is incorporated into a cosmetic composition, preferentially a composition in a form suitable for topical application.
- the invention therefore also relates to a cosmetic use of a composition comprising at least 0.1% by weight of the active principle according to the invention, in particular for improving skin regeneration.
- the invention improves the interconnectivity of the cutaneous, vascular and immune systems.
- FIG. 1 represents the effect of the active ingredient according to the invention on the capacity for skin regeneration, after 14 days of twice-daily application.
- FIG. 2 represents the effect of the active principle according to the invention on the biomechanical properties of the skin after 21 and 42 days of twice-daily treatment.
- cosmetic active principle within the meaning of the invention, is meant an extract comprising at least one molecule, preferably a set of molecules having a cosmetic effect on the skin.
- the cosmetic effect on the skin is an anti-aging effect, in particular a regenerating effect on the skin.
- regenerating effect is meant in the sense of the invention, the ability of living organisms to repair themselves and in particular the ability of the skin to reconstitute itself in response to an attack (burn, scratch, cut) or to natural degradation. This is mainly an overall effect which acts on the cutaneous, vascular and immune system by improving the interconnectivity of said systems.
- inter-connectivity within the meaning of the invention, is meant the exchanges between the different systems (cutaneous, vascular and immune) inside the cutaneous tissue.
- the fibroblast plays a pivotal role in regeneration by interconnecting the three systems via the secretion of a pool of growth factors.
- system is meant a set of interdependent elements constituting it.
- the vascular system is made up of arterioles, capillaries and venules.
- the cutaneous system is the surface in contact with the external environment and includes the epidermis, the dermis, the hypodermis.
- the immune system is made up of several types of immune cells: in particular dendritic cells, T lymphocytes, macrophages and mast cells.
- mechanical lysate within the meaning of the invention, is meant the product resulting from mechanical lysis, that is to say the destruction of the membrane of a biological cell by a physical agent such as a means mechanical as opposed to a chemical or biological agent such as temperature or an enzyme or even the natural autolysis of the cell.
- “mechanical lysate of Saccharomyces cerevisiae” within the meaning of the invention is meant any active principle derived from the yeast Saccharomyces cerevisiae, obtained by a method comprising at least one stage of solubilization of Saccharomyces cerevisiae consisting of mechanical homogenization.
- Mechanical lysis that is to say the destruction of the membrane of a biological cell, is carried out by a physical technique such as a mechanical means as opposed to a chemical or biological agent such as an enzyme, temperature or even natural autolysis of the cell.
- the term “mechanical lysate” excludes molecules produced solely by fermentation of Saccharomyces cerevisiae but also resulting from enzymatic or chemical hydrolysis.
- oligo-glucan within the meaning of the invention, is meant a glucan fraction.
- Glucans and oligo-glucans are polysaccharides made up exclusively of glucose. These glucose molecules can be linear or branched.
- an oligo-glucan is a glucose oligomer of small size, that is to say less than or equal to 5 kDa.
- the present invention therefore relates to a cosmetic active principle comprising at least one yeast extract of the species Saccharomyces cerevisiae, particularly useful for improving skin regeneration.
- the active ingredient according to the invention comprises at least one extract of Saccharomyces cerevisiae, said extract corresponding to the cytosolic fraction comprising oligo-glucans with a molar mass of between 2 and 5 kDa.
- said extract excludes any other part or element of the yeast such as the wall or the membranes of the yeast.
- said extract consists of the cytosolic fraction of Saccharomyces cerevisiae yeast.
- the extract is a mechanical lysate of Saccharomyces cerevisiae.
- said extract can be obtained by a process comprising the following steps: a. solubilization of at least 50 g/L of Saccharomyces cerevisiae in water, by mechanical homogenization, b. separation of the soluble and insoluble phases, c. ultrafiltration and filtrate recovery, and d. molecular sorting, in particular by membrane filtration.
- the extract is obtained from the soluble phase.
- the extract constituting the cosmetic active ingredient according to the invention has been characterized by the inventor. This comprises trace glucans which preferably represent between 10% and 35% by weight of dry matter of the extract.
- the extract according to the invention consisting of the cytosolic fraction of yeast, it does not include membranes and therefore said extract contains little mannose. Even more preferentially, the extract according to the invention comprises a glucose/mannose ratio greater than 60%.
- the extract according to the invention also comprises a protein fraction.
- the distribution and quantity of the protein fraction can be determined by measuring total nitrogen according to the KJELDHAL method (reference: Official method of analysis of the A.O.C., 12th ed. W Horwitz, E.D., New-York, 15- 60, 1975).
- the extract comprises between 45 and 55% of peptides by weight of dry matter of the extract according to the KJELDHAL method, 96% of which are peptides having a molecular mass of less than 2000 Da.
- the inventor has also determined the ash content.
- the ash content can be determined by weighing the residues resulting from the incineration of the samples of the active principle according to the invention at 550° C. in an electric muffle furnace.
- the active principle according to the invention has an ash content of between 10% and 22% by weight of dry matter of the active principle.
- the extract according to the invention also comprises between 0 and 31% by weight of dry matter of other cellular metabolites present in the cytosol such as organic acids, DNA, etc.
- the cosmetic active principle according to the invention can be in liquid form, in solid form or in film form.
- the active ingredient according to the invention when in liquid form, it consists exclusively of the extract of the cytosolic fraction of the yeast of Saccharomyces cerevisiae, optionally accompanied by stabilizer and/or preservative system.
- the extract in liquid form is preferably in the form of a clear liquid aqueous solution, with a characteristic odor and a light yellow color. It can however be more colored and/or be bleached by any method known to those skilled in the art.
- the dry matter content can be determined by weighing the residues resulting from the drying of the extract according to the invention at 105° C. in an oven until a constant weight is obtained.
- the extract according to the invention in liquid form has a dry matter content of: 10 g/L to 50 g/L, even more preferably from 15 g/L to 35 g/L.
- the active principle according to the invention can also be presented in the form of a film.
- the extract of the cytosolic fraction of Saccharomyces cerevisiae preferably represents at least 0.1% by weight of the film.
- the active ingredient comprises: a. at least the lysate of the cytosolic fraction of Saccharomyces cerevisiae according to the invention, and b. at least one mineral filler, and/or c. at least one polymer of natural origin, and/or d. at least one plasticizer, and/or e. at least one surfactant.
- the polymer of natural origin can be chosen from: Pectin, tamarind gum, alginate, pullulan, psyllium, xanthan, guar, tara, carob, agar, gum arabic, gellan, dextran, carrageenan, cellulose, konjac and chitosan.
- the plasticizer can be chosen from: Glycerol, Sorbitol, Sucrose, Erythritol, Urea, Propylene glycol and Butylene glycol.
- the mineral filler can be chosen from: Calcium carbonate, green clay, kaolin, perlite, talc, magnesium silicate, mica, diatomaceous sericite, silica, calcium sulphate, calcium chloride, potassium chloride, iron oxide and zinc oxide.
- the active principle may further comprise a pigment to color the film.
- the active principle according to the invention is in solid form, it is preferably constituted by the extract of the cytosolic fraction of the yeast of Saccharomyces cerevisiae as previously described and by a support chosen from maltodextrin, gum arabic , soy lecithin or isomalt.
- the extract represents at least 10% by weight of the active principle and the support at most 90% by weight of the active principle.
- the support In the case of a solid form in which the active principle is combined with a support, the sugar, protein fraction and ash contents in the active principle are modified, the support generally consisting mainly of sugars.
- the extract constituting or contained in the active principle according to the invention can be obtained by any process comprising at least one stage of extraction of the cytosolic fraction of the yeast of Saccharomyces cerevisiae, in particular a stage of mechanical lysis.
- the active principle according to the invention is obtained by implementing the following steps: a. solubilization of at least 50 g/L of Saccharomyces cerevisiae in water, by mechanical homogenization, b. separation of the soluble and insoluble phases, c. ultrafiltration and filtrate recovery, and d. molecular sorting, in particular by membrane filtration.
- Mechanical homogenization is carried out by any means known to those skilled in the art, for example by mechanical grinding using a homogenizer.
- the separation of the soluble and insoluble phases is carried out by any means known to those skilled in the art, for example by centrifugation, filtration or decantation.
- the separation of the soluble and insoluble phases is carried out by centrifugation, thus allowing the recovery of the soluble phase containing, among other things, the fractions sugars and soluble proteins.
- the method comprises an ultrafiltration step after the recovery of the soluble phase to perform molecular sorting, for example by ion chromatography or membrane filtration.
- this ultrafiltration step allows the purification of the recovered soluble phase. It is carried out in order to eliminate molecules of high molecular weight (enzymes and polymers, elements of the wall, membranes, etc.), that is to say molecules of molecular weight greater than 10kDa.
- the lysate obtained at this stage can optionally be further concentrated and/or purified, preferably by successive ultrafiltration stages through filters with different cut-off thresholds, keeping the filtrates at each stage and/or by a method chromatographic type.
- the product obtained after lysis and ultrafiltration, before or after concentration and sterilizing filtration is a lysate of the cytosolic fraction of Saccharomyces cerevisiae, and constitutes the first form of the active ingredient according to the invention, then in liquid form.
- the lysate obtained can then be dried and associated with a support, to be in solid form.
- This phase can be achieved by implementing the following steps: a. an atomization medium, preferably maltodextrin, is added to the product in liquid form, at most 90% (by mass/volume), b. this solution is then concentrated under vacuum; vs. any bacteria present is eliminated by heat treatment or filtration; d. atomization makes it possible to obtain a powder.
- an atomization medium preferably maltodextrin
- the active principle according to the invention can be integrated into a cosmetic composition, in particular a composition comprising at least 0.1% by weight of said active principle.
- Said cosmetic composition according to the invention preferably comprises a physiologically acceptable medium, preferably a cosmetically acceptable medium, that is to say which does not cause feelings of discomfort for the user such as redness, tightness or tingling.
- the composition can be in various galenic forms, suitable for topical application to the skin.
- compositions can be in particular in the form of oil-in-water emulsions, water-in-oil emulsions, multiple emulsions (Water/Oil/Water or Oil/Water/Oil) which can optionally be microemulsions or nanoemulsions, or in the form of solutions, suspensions, hydrodispersions, aqueous gels, powders, or foundation. They can be more or less fluid and have the appearance of creams, emulsions, gels, masks or any other aspect of healthy skin care cosmetics.
- compositions comprising at least 0.1% of the liquid active principle according to the invention, preferably between 0.5 and 10% or comprising at least 0.01% of a powder active principle according to 'invention.
- compositions according to the invention may contain, as adjuvant, at least one compound chosen from: a. oils, which may be chosen in particular from silicone oils, linear or cyclic, volatile or non-volatile, b. waxes, such as ozokerite, polyethylene wax, beeswax or carnauba wax, c. silicone elastomers, d. surfactants, preferably emulsifiers, whether nonionic, anionic, cationic or amphoteric, e. co-surfactants, such as linear fatty alcohols, f. thickeners and/or gelling agents, g. humectants, such as polyols such as glycerine, h. colorants, preservatives, fillers, i. the tensors, j. sequestrants, k. perfumes, l. and mixtures thereof, without this list being exhaustive.
- oils which may be chosen in particular from silicone oils, linear or cyclic, volatile or non-vol
- compositions are intended to be used on healthy skin, in particular mature skin, in particular to improve skin regeneration and obtain an overall anti-ageing effect, preferably an anti-wrinkle effect and/or to improve the radiance of the complexion. and/or reduce dark circles.
- the invention therefore also relates to a cosmetic process for treating the skin to improve skin regeneration, in particular to improve the radiance of the complexion and/or to reduce dark circles and/or to reduce wrinkles, which consists of topical application to the skin of a healthy person of such an active principle according to the invention or of such a composition according to the invention.
- the active principle according to the invention or the composition according to the invention has characteristics which allow its use in cosmetics and in particular to limit the natural effects associated with skin aging and thus improve skin regeneration and obtain an anti-aging effect. overall age, preferentially reducing wrinkles and/or reducing dark circles and/or improving the radiance of the complexion.
- the active principle or the composition according to the invention improves the interconnectivity of the cutaneous, vascular and immune systems.
- the active principle or the composition according to the invention increases the synthesis and the secretion of the growth factors KGF, EGF, IGF, FGF, PDGF, TG F-0 and VEGF.
- KGF keratinocyte growth factor
- EGF epidermal growth factor
- IGF insulin growth factor
- PDGF platelet derived growth factor
- TGF- transforming growth factor
- VEGF vascular endothelial growth factor
- the active principle according to the invention by increasing the synthesis and the secretion of KGF, EGF, IGF, FGF, PDGF, TGF-
- the active ingredient stimulates matrix renewal. This translates in vivo into an improvement in the structure of the dermis: the quality of the matrix is increased by 32% and the quality of the fibers is increased by 20%, compared to the placebo. In the epidermis, the active ingredient also stimulates keratinocyte migration (+99%), essential for epidermal dynamics.
- the immune system by promoting the pro-regenerating population (+132%), capable of interacting in return with the fibroblasts, it promotes matrix remodeling.
- the vascular system by restoring the migration of endothelial cells and their cohesion (+93% and +77% respectively), the active promotes the formation of the vascular network (+55%).
- the active principle according to the invention thus exhibits an overall anti-ageing action.
- wrinkles and dark circles are significantly reduced, the microvascular network becomes homogeneous again, the skin is firmer and the complexion's radiance is revived. It is particularly suitable for mature healthy skin.
- Example 1 Active ingredient according to the invention
- the active ingredient is obtained by implementing the following steps: a. Solubilization by mechanical homogenization (lysis) of Saccharomyces cerevisiae yeasts, b. Separation of soluble/insoluble phases, c. Ultrafiltration, d. Filtrate recovery, e. Molecular sorting by membrane filtration, intended to select the molecules, f. Discoloration and Deodorization, and g. Filtrations and sterilizing filtration.
- the extract constituting the active principle according to the invention consists of the cytosolic fraction of the yeasts of S. cerevisae, the membranes are eliminated and there remains almost no mannose in said extract (the mannose level of the glycosidic fraction is less than 2%).
- the glycosidic fraction of the active principle obtained is more particularly made up of 10% of monosaccharides with a molar mass of less than 180 Da and 90% of oligosaccharides with a molar mass of between 360 Da and 5000 Da. More particularly, the glycosidic fraction is composed of approximately 0.5% glucosamine, 1.7% galactose, 1.4% mannose and 96.4% glucose. That is a glucose/mannose ratio of 68.9%.
- the sugars present in the active principle are in the form of oligo-glucans, preferably of size between 2 and 5 kDa.
- the active ingredient is obtained by implementing the following steps: a. Solubilization of Saccharomyces cerevisiae yeasts in a basic aqueous medium at a rate of at least 200g/L, b. Enzymatic hydrolysis, c. Separation of soluble and insoluble phases by centrifugation, decantation or filtration, d. Sterilizing filtration
- the active principle according to Example 2 consists of 34% sugars including 5% disaccharide and 95% saccharides of sizes greater than 1440 Da. And a glucose/mannose ratio of 14.0%.
- the active principle is obtained by carrying out the following steps: a. Solubilization of Saccharomyces cerevisiae yeasts in a slightly basic aqueous medium at a rate of at least 20% with optional addition of an alcohol in order to promote the solubilization of the yeasts, b. hydrolysis of proteins in a basic medium, c. agitation from 8 to 52 hours, d. first filtration to separate the soluble and insoluble phases, e. washing against water in order to purify the active fraction, f. successive concentrations and filtrations, and g. sterilizing filtration.
- the active principle according to Example 3 is thus mainly composed of mannans.
- the active principle is obtained by implementing the following steps: a. Solubilization by mechanical homogenization (lysis) of Saccharomyces cerevisiae yeasts, b. Separation of soluble/insoluble phases, c. Recovery of the soluble phase, d. Molecular sorting by membrane filtration, intended to select the molecules, e. Discoloration and Deodorization, and f. Filtrations and sterilizing filtration.
- Example 5 Active ingredient outside the invention
- the active principle is obtained by implementing the following steps: a. Solubilization by mechanical homogenization (lysis) of Saccharomyces cerevisiae yeasts, b. Separation of soluble/insoluble phases, c. Ultrafiltration, d. Filtrate recovery, e. Molecular sorting by membrane filtration, intended to select the molecules, f. Retentate recovery, g. Discoloration and Deodorization, and h. Filtrations and sterilizing filtration.
- the active principle obtained is composed of molecules of size greater than 5 kDa.
- the active ingredient is obtained by implementing the following steps: a. Solubilization by mechanical homogenization (lysis) of Saccharomyces cerevisiae yeasts, b. Separation of soluble/insoluble phases, c. Ultrafiltration, d. Filtrate recovery, e. Molecular sorting by membrane filtration, intended to select the molecules, f. Filtrate recovery, g. Discoloration and Deodorization, and h. Filtrations and sterilizing filtration
- the active principle obtained is composed of molecules of size less than 2 KDa.
- Example 7 Composition according to the invention
- An example of a formulation comprising the active principle according to the invention in the form of an anti-ageing gel-cream characterized by a fresh and unctuous texture is presented in Table 1 below. After.
- Example 7 can in particular be obtained by the following process: a. Add A2 in Al with stirring and homogenize for 20 minutes. b. Add B then C to A with vigorous stirring. Shake for 20 minutes. vs. Add D and E with moderate agitation. The composition is then in the form of a thick, shiny, off-white cream gel.
- Example 8 Composition according to the invention
- Example 8 can in particular be obtained by the following process: a. Add A2 in Al with moderate stirring, stir until a homogeneous gel is obtained and heat to 80°C, b. Place B under magnetic stirring and heat to 80°C, c. Emulsify B in A under shearing agitation for 10 minutes, d. At 30°C, with moderate stirring, add C, and e. Adjust pH to 5.0 - 5.5 with D.
- composition is then in the form of a supple and shiny, off-white gelled cream.
- Example 9 can in particular be obtained by the following process: a. Add A2 in Al with stirring, stir until homogeneous and heat to 80°C, b. Place B1 under stirring and heat to 80°C. Add B2 to B1 just before the emulsion, c. Emulsify B in A under shearing agitation for 10 minutes, d. At 50°C, with moderate stirring, add C then D, E and F, and e. At room temperature, add G with very gentle stirring.
- composition is then in the form of a flexible, shiny, pale gray emulsion with gray particles in suspension.
- Example 10 Composition According to the Invention
- Table 4 An example of a formulation comprising the active principle according to the invention in the form of a regenerating night cream is presented in Table 4 below.
- Example 10 can in particular be obtained by the following process: a. Add A2 in Al with moderate stirring, stir until a homogeneous gel is obtained and heat to 80°C, b. Place B under magnetic stirring and heat to 80°C, c. Emulsify B in A under shearing agitation for 10 minutes, and d. At 50°C, with moderate stirring, add C then D.
- composition is then in the form of a flexible, shiny, pale beige emulsion.
- pH is equal to 5.4 and the viscosity is equal to (C/5rpm) 57400 cP.
- Test 1 Effect of the active ingredient according to the invention on its ability to restore the regenerating fibroblast complex.
- the objective of this test is to evaluate the impact of aging on the expression and synthesis of growth factors: TGF-(31, KGF, VEGF, FGF2, EGF, IGF1 and PDGFA present within the fibroblast regenerating complex.
- EGF EGF
- IGF1 IGF1
- PDGFA phospholipase-like growth factor
- TGF-p1 TGF-p1
- KGF vascular endothelial growth factor
- VEGF vascular endothelial growth factor
- the young and old human fibroblasts are seeded and incubated at 37° C. in an atmosphere containing 5% CO2.
- the cells are treated with the extracts at 0.25% and 1.00% (V/V). They are then incubated at 37°C in an atmosphere containing 5% CO2.
- the fibroblasts are recovered and the total RNA extracted.
- RNAs were reverse-transcribed and the complementary DNAs obtained were analyzed by the quantitative PCR technique. Internal reference control mRNAs were analyzed alongside EGF, IGF1 and PDGFA mRNAs.
- the supernatants are recovered and stored at ⁇ 80° C. awaiting the ELISA assays of TGFp1, KGF, VEGF, FGF2.
- the objective of this study is to evaluate the effect of the examples according to the invention on the expression of the growth factors: EGF, IGF1 and PDGFA of the fibroblast regenerating complex.
- the active principle according to the invention significantly restores the synthesis of growth factors, whereas the examples outside the invention do not show an effect on all of the growth factors studied.
- the active ingredient according to the invention significantly restores the expression or synthesis of growth factors: EGF by 98%, IGF1 by 75%, PDGFA by 76%, TGFpl by 135 %, 48% KGF, 73% VEGF, and 49% FGF2.
- the active principle according to the invention thus makes it possible to enrich the fibroblast regenerating complex of aged cells in growth factors.
- Test 2 Effect of the active ingredient according to the invention on the migration of fibroblasts.
- the objective of this study is to evaluate the effect of the active ingredient according to the invention on the migration of aged human fibroblasts.
- the effect is measured by evaluating the capacity of the cells to recolonize an injured zone.
- the young and old human fibroblasts are seeded and incubated at 37° C. in an atmosphere containing 5% CO2.
- the injured area is performed after four days.
- the cells are treated with the extracts at 0.25% and/or 1.00% and/or 2% (V/V). They are then incubated in an atmosphere containing 5% CO2 at 37°C.
- the visualization of the migration of the fibroblasts is carried out in “time-lapse” thanks to an entirely automated system which makes it possible to follow the migration of the cells during the culture.
- the cell migration rate within the wound is calculated using an image analysis script developed in-house. The results are expressed in pm 2 /min.
- the migration rate of aged human fibroblasts is significantly reduced by 27% compared with young human fibroblasts.
- the active principle according to the invention thus promotes faster recolonization of the aged injured dermis, a key stage in skin regeneration.
- Test 3 Effect of the active principle according to the invention on the differentiation into myofibroblasts.
- the objective of this study is to evaluate the effect of the active ingredient according to the invention on the synthesis of alpha-Smooth muscle actin (a-SMA), actin microfilaments characteristic of myofibroblasts, in a injured area.
- a-SMA alpha-Smooth muscle actin
- fibroblasts are activated and differentiate into myofibroblasts, which contract and participate in healing by reducing the size of the wound and by secreting proteins from the extracellular matrix.
- the study was carried out by immunocytofluorescence, on human fibroblasts obtained from face plasties, young and old.
- the wound is made.
- the cells are treated with the active principle according to the invention at 0.25% and 1.00% (V/V) for 72 hours. They are then incubated in an atmosphere containing 5% CO2 at 37°C.
- the immunocytological labeling of ⁇ -SMA is carried out by fixing and permeabilization using a primary antibody and a secondary antibody coupled to a fluorophore.
- Visualization is carried out using a microscope coupled to a camera and to an image analysis system.
- the intensity of the labeling of a-SMA is proportional to the intensity of staining (fluorescence) present in the cytoplasm of the fibroblasts. The greater the fluorescence, the higher the rate of a-SMA synthesis.
- a-SMA a characteristic marker of myofibroblasts
- the active principle according to the invention significantly stimulates the synthesis of ⁇ -SMA by 40%.
- the active principle according to the invention thus allows the transformation of fibroblasts into myofibroblasts, key players in dermal regeneration.
- Test 4 Effect of the active principle according to the invention on the migration of keratinocytes.
- the objective of this study is to evaluate the impact of the aged fibroblast regenerating complex treated with the active ingredient according to the invention on the migration of aged human keratinocytes.
- the wound is performed.
- the cells are treated with secretomes from young (SFJ) or old (SFA) fibroblasts in the presence or absence of the active principle according to the invention at 0.25% and 1.00% (V/V).
- the cells are then incubated in an atmosphere containing 5% CO 2 at 37°C.
- the cell migration rate within the wound is calculated using an image analysis script developed in-house. The results are expressed in pm 2 /min.
- the migration of aged human keratinocytes is significantly reduced by 45% compared with young human keratinocytes.
- the secretome obtained from aged human fibroblasts pretreated with 1.0% of the active principle according to the invention significantly restores the rate of cell migration by 99%. Whereas in the presence of example 2 outside the invention, the cell migration rate is only restored by 39%.
- the active principle according to the invention thus accelerates keratinocyte migration, a key step in skin regeneration.
- Test 5 Effect of the active principle according to the invention on the immune system and the polarization of macrophages.
- the objective of this study is to evaluate the impact of the aged fibroblastic regenerating complex treated with the active principle according to the invention on the polarization of the proregenerating macrophages.
- the immune system is involved in the defenses against pathogens but also participates in tissue homeostasis.
- the regeneration phase is notably guided by a population of pro-regenerating macrophages with anti-inflammatory action and capable, among other things, of stimulating matrix remodeling.
- the activity of these macrophages decreases, with in particular a less strong reactivity to external stimuli resulting in poorer differentiation and a reduction in the expression of certain surface receptors necessary for their functionality.
- Human monocytes are isolated from peripheral blood mononuclear cells (PBMCs) and are seeded in a differentiation medium for macrophages before being incubated at 37°C in an atmosphere containing 5% CO2.
- PBMCs peripheral blood mononuclear cells
- the macrophages are then treated with secretomes from young (SFJ) or old (SFA) fibroblasts in the presence or absence of the active principle according to the invention at 0.25% and 1.00% (V/V).
- the cells are then incubated in an atmosphere containing 5% CO2 at 37°C.
- the macrophages are recovered and labeled with conjugated antibodies specific for CD163 and HLA-DR.
- the cells are then fixed in a 1% paraformaldehyde solution before being analyzed on a flow cytometer fitted with analysis software.
- the rate of synthesis of CD163 and HLA-DR is evaluated via the median fluorescence associated with each of these markers and is expressed in arbitrary units (AU).
- the supernatants are sampled and stored at ⁇ 80° C. until analysis by ELISA assay for TNF ⁇ .
- the secretome of young or old fibroblasts treated or not with the active principle according to the invention does not modify the rate of synthesis of HLA-DR and does not induce synthesis of TNF ⁇ .
- the secretome from human fibroblasts promotes the generation of proregenerating macrophages without inducing pro-inflammatory macrophages.
- the level of synthesis of CD163, a specific receptor participating in the functionality of pro-regenerating macrophages, is reduced by 23% in the presence of secretome obtained from aged human fibroblasts compared to the secretome obtained from young human fibroblasts.
- the secretome from aged human fibroblasts pretreated with 0.25% of the active principle according to the invention restores the surface expression of CD163 by 132%.
- the active principle according to the invention thus reinforces the functionality of the proregenerating macrophages, essential elements of skin regeneration.
- Test 6 Effect of the active ingredient according to the invention on the vascular system and the migration of endothelial cells.
- the objective of this study is to evaluate the effect of the active ingredient according to the invention on the migration of aged human endothelial cells.
- endothelial cells making up the skin micro-vessels are normally quiescent in the capillaries. Nevertheless, in response to a stimulus from the microenvironment (hypoxia, injury), endothelial cells are activated, migrate and are able to remodel the vascular network in order to meet the needs of the injured tissue. With age, senescent endothelial cells are dysfunctional leading to defects in vascular remodeling as well as a decrease in the number of capillaries in the skin.
- the young and old endothelial cells (HUVEC: Human umbilical vein endothelial cells) are seeded and incubated at 37° C. in an atmosphere containing 5% CO2.
- the wound zone is created.
- the cells are treated with secretomes from young (SFJ) or old (SFA) fibroblasts in the presence or absence of the active principle according to the invention at 0.25% and 1.00% (V/V).
- the cells are then incubated in an atmosphere containing 5% CO 2 at 37°C.
- the visualization of the migration of the endothelial cells is carried out in “time-lapse” thanks to an entirely automated system which makes it possible to follow the migration of the cells during the culture.
- the cell migration rate within the wound is calculated using an image analysis script developed in-house. The results are expressed in pm 2 /min.
- the migration of aged human endothelial cells is significantly reduced by 47% compared with young endothelial cells.
- the secretome obtained from aged human fibroblasts pretreated with 1.0% of the active principle according to the invention significantly restores the rate of migration of the endothelial cells by 93%.
- the active principle according to the invention thus accelerates the migration of aged endothelial cells, which is essential for the regeneration of the (injured) vascular network.
- Test 7 Effect of the active principle according to the invention on the vascular system and the cohesion of the endothelial cells.
- the objective of this study is to evaluate the effect of the active ingredient according to the invention, within the regenerating fibroblastic complex, on the synthesis of ZO-1 (Zonula Occludens -1), protein of junctions between the endothelial cells.
- vascular integrity is ensured by the establishment of adherent and tight junctions between the endothelial cells. These junctions allow selective vessel permeability.
- ZO-1 is a constituent component of endothelial tight junctions. With age, endothelial cells are dysfunctional and show a decrease in the expression and membrane addressing of tight junction components inducing increased permeability.
- the young and old human endothelial cells (HUVEC: Human umbilical vein endothelial cells) are seeded and incubated at 37° C. in an atmosphere containing 5% CO2.
- the cells are treated with secretomes from young (SFJ) or old (SFA) fibroblasts in the presence or absence of the active principle according to the invention at 0.25% and 1.00% (V/V). They are then incubated in an atmosphere containing 5% CO2 at 37°C.
- the immunocytological labeling of ZO-1 is carried out by fixation and permeabilization using primary antibody and secondary antibody coupled to a fluorophore.
- Visualization is carried out using a microscope coupled to an image analysis system.
- the fluorescence surface corresponding to the ZO-1 labeling, is proportional to the establishment of tight junctions between the endothelial cells.
- a quantitative analysis of the images was carried out thanks to an image analysis script developed internally in Python language. The results are expressed in arbitrary units (AU).
- ZO-1 a constituent protein of intercellular junctions
- the active principle according to the invention thus makes it possible to reinforce cell cohesion.
- Test 8 Effect of the active principle according to the invention on the vascular system and the formation of the vascular network.
- the objective of this study is to evaluate the effect of the active ingredient according to the invention on the formation of a capillary network of aged endothelial cells.
- angiogenesis The remodeling of the cutaneous vascular network in adults in response to a stimulus (hypoxia, injury) takes place via an angiogenesis mechanism. This process is defined as the formation of vessels from pre-existing vessels. It is the result of specification, migration and proliferation of endothelial cells. Physiological angiogenesis allows the skin to heal properly. With age, the formation of capillaries by angiogenesis is altered and prevents proper healing and tissue homeostasis.
- the cells are treated with the 1.00% (V/V) extracts then incubated at 37° C. in an atmosphere containing 5% CO2.
- the young and old human endothelial cells (HUVEC: Human Umbilical Vein Endothelial Cells) are seeded on the mats of young or old fibroblasts and incubated at 37° C. in an atmosphere containing 5% CO2.
- the cells are then treated with a 1.00% (V/V) extract and incubated at 37° C. in an atmosphere containing 5% CO2.
- the immunocytological labeling of CD31 is carried out by fixation and permeabilization using primary antibody and secondary antibody coupled to a fluorophore.
- Visualization is carried out using a microscope coupled to a camera and to an image analysis system.
- the fluorescence surface corresponding to the CD31 labeling is proportional to the extent of the vascular network formed by the endothelial cells.
- the active principle according to the invention makes it possible to significantly restore the formation of a capillary network by 101%. While example 3 outside the invention has a lower efficiency.
- the active principle according to the invention thus promotes angiogenesis.
- Test 9 Student's of the biological activity of the active ingredient according to the invention in vivo.
- the objective of this study is to evaluate in vivo the biological activity of the active principle according to the invention formulated at 2.5% in emulsion, in comparison with a placebo formula, on Caucasian and Asian volunteers.
- the Caucasian panel is composed of 19 healthy female volunteers, aged 70 to 78, with crow's feet wrinkles and a dull complexion.
- the Asian panel consisted of 33 people aged 60 to 69 and the placebo group of 32 people aged 60 to 68.
- the effect of the active principle according to the invention was evaluated at the level of the forearms on the Caucasian panel by studying its ability to accelerate cell renewal after 14 days of twice-daily application.
- DHA dihydroxyacetone
- a gel containing 8% DHA is applied to the surface of the skin of the volunteers. Monitoring of the color obtained after application of the DHA gel starts 72 hours after coloring on untreated areas, treated twice daily with a placebo formula or treated twice daily with a formula containing 5% of the active ingredient according to the invention. The evaluation is carried out using photographs of the skin taken at regular intervals over 14 days, using a dermatoscope.
- the active principle according to the invention formulated at 2.5% in emulsion, promotes epidermal dynamics by increasing the capacity of the skin to eliminate DHA.
- the coloring with DHA is eliminated by more than 80%, against 11 days for the zone treated with the placebo.
- the active principle according to the invention formulated at 2.5% significantly improves the quality of the matrix of Caucasian volunteers by 32% compared with the placebo.
- the active principle according to the invention formulated at 2.5% significantly improves the quality of the fibers of Asian volunteers by 20% compared to the placebo. This effect was observed in 97% of Asian subjects. This effect is prolonged after 42 days of treatment.
- the objective of this study is to evaluate in vivo the cosmetic benefits of the active principle according to the invention formulated at 2.5% in emulsion, in comparison with a placebo formula, in Caucasian and Asian volunteers.
- the effect of the active principle according to the invention was evaluated after 21 and 42 days of twice-daily application.
- the Caucasian panel is made up of 19 healthy female volunteers, aged 70 to 78, with crow's feet wrinkles and a dull complexion.
- the Asian panel consists of 33 people aged 60 to 69 and the placebo group of 32 people aged 60 to 68.
- the active ingredient according to the invention increases by:
- the active principle according to the invention formulated at 2.5% in emulsion exhibits an anti-wrinkle effect, by significantly reducing the stage of wrinkles on the paws by 10%. 'goose. This effect is observed in 74% of volunteers.
- the active principle according to the invention formulated at 2.5%, reduces the visibility of the dystrophic vessels in the cheeks (-6%).
- the active principle according to the invention improves the cutaneous vascularization.
- the active principle according to the invention formulated at 2.5% in emulsion limits dark circles by reducing the b* parameter by 2.9% from 21 days of application and continues until the end of study.
- Parameter b* represents the range from blue to yellow during colorimetric measurements; it is characteristic of cutaneous melanic yellow pigmentation. The more this parameter decreases, the more the skin clears up.
- the active principle according to the invention formulated at 2.5% in emulsion: o gives a brighter and fresher complexion by significantly increasing the radiation of the skin from 9% and the color pink, 15%. Effect observed in 74% and 84% of volunteers respectively. o significantly decreases the olive color by 7% and the state of eye fatigue by 6%. Effect observed in 79% and 89% of volunteers respectively
- the active principle according to the invention formulated at 2.5% in emulsion exhibits an anti-wrinkle effect in Asian volunteers, by significantly reducing the stage of wrinkles by 6%. crow's feet. This effect is observed in 58% of volunteers. This effect is prolonged after 42 days of treatment.
- the active principle according to the invention formulated at 2.5% in emulsion, provides cosmetic benefits from 21 days of treatment which continue after 42 days of treatment.
- the active ingredient according to the invention allows: an improvement in the biomechanical properties of the skin a reduction in wrinkles in Caucasian and Asian volunteers an improvement in the vascularization of the skin, by reducing dystrophic microvessels as well as dark circles a improvement in the radiance of the complexion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2108407A FR3125718B1 (fr) | 2021-08-02 | 2021-08-02 | Principe actif comprenant des oligo-glucanes issus de la fraction cytosolique de Saccharomyces cerevisiae et ses utilisations cosmétiques |
| PCT/EP2022/071576 WO2023012115A1 (fr) | 2021-08-02 | 2022-08-01 | Principe actif comprenant des oligo-glucanes issus de la fraction cytosolique de saccharomyces cerevisiae et ses utilisations cosmetiques |
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| EP4380544A1 true EP4380544A1 (fr) | 2024-06-12 |
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| EP22757970.3A Pending EP4380544A1 (fr) | 2021-08-02 | 2022-08-01 | Principe actif comprenant des oligo-glucanes issus de la fraction cytosolique de saccharomyces cerevisiae et ses utilisations cosmetiques |
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| US (1) | US20240299288A1 (fr) |
| EP (1) | EP4380544A1 (fr) |
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| EP4704981A2 (fr) | 2023-05-05 | 2026-03-11 | Coty Inc. | Utilisation de principes actifs pour le traitement et/ou la prévention de la sénescence de la peau |
| NL2040906A (en) | 2024-08-02 | 2026-02-19 | Coty Inc | Saccharomyces cerevisiae extract for exosome content modulation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3721190C1 (de) | 1987-06-26 | 1989-02-02 | Heyl Chem Pharm | Kosmetisches Mittel |
| EP1343468A1 (fr) * | 2000-07-07 | 2003-09-17 | Cognis France S.A. | Procede pour la protection de la peau contre le vieillissement |
| FR2887772B1 (fr) * | 2005-07-01 | 2010-08-13 | Soc Extraction Principes Actif | Utilisation d'un extrait de levure en tant qu'agent actif inducteur de la synthese des proteines sirt dans les cellules de la peau. |
| FR2921260B1 (fr) | 2007-09-25 | 2012-08-24 | Lesaffre & Cie | Utilisation d'un nouvel agent naturel dans des compositions cosmetiques |
| FR2927254B1 (fr) | 2008-02-12 | 2010-03-26 | Lesaffre & Cie | Utilisation de substances actives naturelles dans des compositions cosmetiques ou therapeutiques |
| US20120128755A1 (en) * | 2010-09-30 | 2012-05-24 | James Vincent Gruber | Personal Care Composition Containing Yeast Extract And Hexapeptide |
| WO2019158637A1 (fr) * | 2018-02-14 | 2019-08-22 | Danstar Ferment Ag | Compositions d'extrait de levure pour le traitement de matières kératiniques |
| EP3670646A1 (fr) * | 2018-12-21 | 2020-06-24 | Ohly GmbH | Concentré de protéine de levure fonctionnel |
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2021
- 2021-08-02 FR FR2108407A patent/FR3125718B1/fr active Active
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2022
- 2022-08-01 WO PCT/EP2022/071576 patent/WO2023012115A1/fr not_active Ceased
- 2022-08-01 EP EP22757970.3A patent/EP4380544A1/fr active Pending
- 2022-08-01 US US18/294,264 patent/US20240299288A1/en active Pending
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| US20240299288A1 (en) | 2024-09-12 |
| WO2023012115A1 (fr) | 2023-02-09 |
| FR3125718B1 (fr) | 2025-04-04 |
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