US20090169491A1 - Peptides Having Activities of Insulin Like Growth Factor-1 and their Uses - Google Patents

Peptides Having Activities of Insulin Like Growth Factor-1 and their Uses Download PDF

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US20090169491A1
US20090169491A1 US12/224,788 US22478807A US2009169491A1 US 20090169491 A1 US20090169491 A1 US 20090169491A1 US 22478807 A US22478807 A US 22478807A US 2009169491 A1 US2009169491 A1 US 2009169491A1
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igf
peptide
seq
peptides
amino acid
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Yong Ji Chung
Young Deug Kim
Eun Mi Kim
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Caregen Co Ltd
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Caregen Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/575—Hormones
    • C07K14/65—Insulin-like growth factors, i.e. somatomedins, e.g. IGF-1, IGF-2
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
    • A61P1/02—Stomatological preparations, e.g. drugs for caries, aphtae, periodontitis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A61P17/02—Drugs for dermatological disorders for treating wounds, ulcers, burns, scars, keloids, or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A61P17/10—Anti-acne agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A61P17/14—Drugs for dermatological disorders for baldness or alopecia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A61P17/16—Emollients or protectives, e.g. against radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A61P17/18—Antioxidants, e.g. antiradicals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00—Medicinal preparations containing peptides

Definitions

  • the present invention relates to peptides having insulin like growth factor-1 (IGF-1) and theirs uses.
  • IGF-1 insulin like growth factor-1
  • IGF-1 Insulin like growth factor-1
  • IGF-1 Insulin like growth factor-1
  • IGF-1 Insulin like growth factor-1
  • IGF-1 Insulin like growth factor-1
  • IGF-1 with a molecular weight of 7,649 Da consisting of 70 amino acids is generated by human growth hormone in the liver and then secreted in blood. Its amino acid composition shows about 43% similarity to A chain of insulin. IGF-1 exhibiting similar actions to insulin is capable of binding to insulin receptor as well as its receptor, and promoting cell proliferation. IGF-1 is usually called somatomedin C due to its growth mediation activity.
  • IGF-1 receptor is present in various tissues such as adipose tissue, lymphocyte, bond and placental membrane as well as hepatocyte. IGF-1 receptor has been revealed to have other signaling pathway than insulin receptor. The binding of IGF-1 to its receptor results in promoting somatic cell division through second messengers. IGF-1 secreted into blood from the liver is circulated as the complex form with binding protein (inactivated form). IGF-1 is separated from its binding protein in response to physiological changes or some nutrient conditions and then binds to receptors on somatic cell to stimulate cells.
  • IGF-1 serves to promote growth of almost all types of cells in vivo and to inhibit synthesis of glucagon in carbohydrate metabolism, resulting in the enhancement of glucose absorption into cells. Due to its similar actions to insulin, it has been focused as promising therapeutics for Laron dwarfism and insulin dependent or independent diabetes.
  • IGF-1 having immunmodulatory activity has been researched to provide therapeutics to increase immune response of post-surgery patients and to modulate hypersensitivity reactions induced by sepsis.
  • IGF-1 facilitates synthesis of proteoglycan in chondrocytes and serves as promising therapeutics for degenerative arthritis caused by degradation of proteoglycan in cartilage to destruct cartilage. Therefore, IGF-1 has been highlighted as a biomolecule applicable to immunmodulation and the treatment of diabetes, dwarfism, degenerative arthritis and amyotrophic lateral sclerosis.
  • IGF-1 has three disulfide bonds (amino acid 6-48, 18-61 and 47-52) in its backbone which is essential to its inherent activities, comprising B (1-29), C (30-41), A (42-62) and D (63-70) domains.
  • B and A domains have been reported as a binding domain to its receptor and C and D domains have been suggested to assist a specific binding of B and A domains to IGF-1 receptor.
  • the deletion or mutation of C and D domains permits the binding affinity of IGF-1 to be altered in which IGF-1 variants bind preferentially to insulin receptor rather than IGF-1 receptor.
  • IGF-1 mimicking peptides have been prepared by solid phase synthesis methods.
  • JB2 corresponding to amino acid 29-38 of IGF-1
  • JB1 corresponding to amino acid 61-70
  • WO 03/048192 filed by Teruo et al. teaches that each of the peptide fragment of IGF-1 consisting of amino acid 33-37 and substance-P derived tetrapeptide exert complementary efficacy to wound healing.
  • Kodama et al. reports that the peptide fragment of IGF-1 consisting of amino acid 50-70 has a therapeutic effect to diabetes in mice ( Autoimmunity, 37:481-487(2004)).
  • the present inventors For developing peptides having actions identical to natural-occurring IGF-1 and having more significant characteristics such as activity, skin penetration and stability than natural-occurring IGF-1, the present inventors have made intensive researches. As a result, the present inventors have discovered several IGF-1 mimicking peptides having excellent characteristics described above on the basis of the amino acid sequence of natural-occurring IGF-1, eventually accomplishing the present invention.
  • a peptide having the activity of insulin like growth factor-1 (IGF-1) and derived from IGF-1 which comprises the amino acid sequence selected from SEQ ID NOs:2-8.
  • composition for improving skin conditions or treating a periodontal disease which comprises as an active ingredient the peptide of this invention.
  • a method for improving a skin condition or treating a periodontal disease which comprises administering to a subject a composition comprising the peptide of this invention.
  • peptide of the present invention for manufacturing a composition for improving a skin condition or treating a periodontal disease.
  • the present inventors For developing peptides having actions identical to natural-occurring IGF-1 and having more significant characteristics such as activity, skin penetration and stability than natural-occurring IGF-1, the present inventors have made intensive researches. As a result, the present inventors have discovered several IGF-1 mimicking peptides having excellent characteristics described above on the basis of the amino acid sequence of natural-occurring IGF-1.
  • the peptide of the present invention comprises the IGF-1-derived amino acid sequence selected from SEQ ID NOs:2-8.
  • the peptide consists essentially of the amino acid sequence selected from SEQ ID NOs:2-8.
  • the peptide consists of the amino acid sequence selected from SEQ ID NOs:2-8.
  • peptide refers to a linear molecule formed by linking amino acid residues through peptide bonds.
  • the peptides of the invention may be prepared by conventional chemical synthesis processes known to one of skill in the art, in particular, solid-phase synthesis techniques (Merrifield, J. Amer. Chem. Soc. 85:2149-54(1963); Stewart, et al., Solid Phase Peptide Synthesis, 2nd. ed., Pierce Chem. Co.: Rockford, 111 (1984)).
  • FIG. 1 The design of peptides according to the present invention is exemplified in FIG. 1 .
  • SEQ ID NO:7 corresponds to amino acids 22-37 of natural-occurring IGF-1.
  • amino acids 28-29 are substituted by other amino acid residues for stronger binding to its receptor, which generates a novel sequence, SEQ ID NO:6.
  • amino acid sequence of SEQ ID NO:6 is represented by “Gly-Phe-Tyr-Phe-Asn-Lys-Xaa-Gly-Tyr-Gly-Ser-Ser-Arg-Arg” due to limitations of a computer program producing a sequence listing in patent specification.
  • SEQ ID NO:6 is represented by “Gly-Phe-Tyr-Phe-Asn-Lys-(Xaa) n -Gly-Tyr-Gly-Ser-Ser-Arg-Arg”, wherein Xaa is a linker (peptide linker), n is an integer of 1-10 (preferably, 1-8, more preferably 1-5, most preferably 2).
  • the linker contained in SEQ ID NO:6 comprises any linker available to one of skill in the art.
  • the linker comprises a plurality of amino acids. Details of peptide linkers are found in Huston, et al., Methods in Enzymology, 203:46-88(1991), and Whitlow, et al., Protein Eng., 6:989(1993), teachings of which are incorporated herein by references.
  • a suitable linker in the present invention comprises amino acids having uncharged side chains, preferably, Gly, Ser, Ala and Cys, most preferably Ala.
  • the linker contained in SEQ ID NO:6 is Ala-Ala dimer, hexanoic acid or amino butyric acid.
  • the specific amino acid sequence of SEQ ID NO:6 is set forth in SEQ ID NO:1.
  • SEQ ID NO:2 corresponds to amino acids 3041 of IGF-1.
  • SEQ ID NO:8 corresponds to amino acids 46-57 of IGF-1.
  • a Cys residue is preferably substituted with a Ser residue, which generates a novel sequence, SEQ ID NO:3.
  • SEQ ID NO:4 corresponds to amino acids 52-61 of IGF-1.
  • Cys residues at the N- and C-terminal are linked to form a disulfide bond, producing a cyclized peptide for enhancing the stability of peptides.
  • the C-terminal of the peptides of the present invention is modified to have a hydroxyl group (—OH) or an amino group (—NH 2 ).
  • the N-terminal of the peptides of the present invention is protected with a protection group selected from the group consisting of acetyl group, fluorenyl methoxy carbonyl group, formyl group, palmitoyl group, myristyl group, stearyl group or polyethylene glycol (PEG).
  • a protection group selected from the group consisting of acetyl group, fluorenyl methoxy carbonyl group, formyl group, palmitoyl group, myristyl group, stearyl group or polyethylene glycol (PEG).
  • stability refers to in vivo stability and storage stability (e.g., storage stability at room temperature) as well.
  • the protection group described above protects the peptides from the attack of protease in vivo.
  • composition of the present invention is utilized to prevent or treat IGF-1-effective (insulin like growth factor-1-effective) disorders or conditions.
  • the peptide of this invention as active ingredients contained in the present composition has IGF-1 activities and shows in vivo functions and efficacies identical or similar to natural-occurring IGF-4.
  • IGF-1 activities refers to any and all activities of natural-occurring IGF-1 known to one of skill in the art, for example, including promotion of cell proliferation division. Since the peptide of this invention is prepared to mimic the actions of natural-occurring IGF-1, it can exert all in vivo activities of natural-occurring IGF-1.
  • IGF-1-effective disorders or conditions refers to disorders or conditions able to be prevented or treated by natural-occurring IGF-1.
  • the actions of the preset composition may be expressed as improvement of skin conditions or treatment of periodontal diseases.
  • composition for treating periodontal diseases may be interchangeably used herein with other terms, “composition for tooth and mouth caring” and “composition for tooth and mouth cleaning”.
  • composition for tooth and mouth cleaning may be interchangeably used herein with other terms, “composition for tooth and mouth caring” and “composition for tooth and mouth cleaning”.
  • the peptide of this invention promotes biological activities of epidermal cells present in gum tissues and heals gum wound to regenerate damaged gum tissues, thereby treating or preventing periodontal diseases.
  • the present composition has efficacies or activities to improve skin conditions.
  • the peptides used as active ingredients in the present composition show excellent skin permeation because of their low molecular weight. Accordingly, where the present composition is topically applied to skin, it becomes evident that skin conditions are considerably improved.
  • the improvement in the skin condition by the present composition includes the improvement in wrinkle or skin elasticity, the prevention of skin aging, the prevention of hair loss, the promotion of hair growth, the improvement in skin moisture, the removal of dark spots, the treatment of acne, wound healing and skin regeneration, most preferably, the improvement in wrinkle or skin elasticity, and the prevention of skin aging, wound healing and skin regeneration.
  • the peptides used as active ingredients in the present composition promote the proliferation of keratinocytes, induce the biosynthesis of procollagen, laminin and fibronectin to regenerate keratinocyte layer, epidermis and dermis, thereby resulting in the improvements in wrinkle, skin elasticity and skin moisture, the prevention of skin aging, wound healing, skin regeneration and gum tissue regeneration.
  • the present composition may be prepared as a pharmaceutical or cosmetic composition.
  • the composition is a pharmaceutical composition comprising (a) a pharmaceutically effective amount of the peptides of the present invention; and (b) a pharmaceutically acceptable carrier.
  • pharmaceutically effective amount refers to an amount enough to show and accomplish efficacies and activities of the peptide of this invention.
  • the pharmaceutically acceptable carrier contained in the pharmaceutical composition of the present invention which is commonly used in pharmaceutical formulations, but is not limited to, includes lactose, dextrose, sucrose, sorbitol, mannitol, starch, rubber arable, potassium phosphate, arginate, gelatin, potassium silicate, microcrystalline cellulose, polyvinylpyrrolidone, cellulose, water, syrups, methylcellulose, methylhydroxy benzoate, propylhydroxy benzoate, talc, magnesium stearate, and mineral oils.
  • the pharmaceutical composition according to the present invention may further include a lubricant, a humectant, a sweetener, a flavoring agent, an emulsifier, a suspending agent, and a preservative.
  • a lubricant e.g., talc, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, sorbitol, mannitol, mannitol, mannitol, mannitol, mannitol, mannitol, mannitol, mannitol, mannito
  • composition according to the present invention may be administered orally or parenterally, and preferably, administered parenterally, e.g., by intravenous, intraperitoneal, intramuscular, subcutaneous, transdermal or local administration.
  • a suitable dosage amount of the pharmaceutical composition of the present invention may vary depending on pharmaceutical formulation methods, administration methods, the patient's age, body weight, sex, pathogenic state, diet, administration time, administration route, an excretion rate and sensitivity for a used pharmaceutical composition.
  • the pharmaceutical composition of the present invention may be administered with a daily dosage of 0.0001-100 ⁇ g.
  • the pharmaceutical composition according to the present invention may be formulated with pharmaceutically acceptable carrier and/or vehicle as described above, finally providing several forms a unit dose form and a multi-dose form.
  • the formulations include, but not limited to, a solution, a suspension or an emulsion in oil or aqueous medium, an extract, an elixir, a powder, a granule, a tablet and a capsule, and may further comprise a dispersion agent or a stabilizer.
  • the composition is a cosmetic composition comprising (a) a cosmetically effective amount of the peptide of the present invention; and (b) a cosmetically acceptable carrier.
  • cosmetically effective amount refers to an amount enough to accomplish efficacies on improvements in skin conditions described hereinabove.
  • the cosmetic compositions of this invention may be formulated in a wide variety of forms, for example, including a solution, a suspension, an emulsion, a paste, an ointment, a gel, a cream, a lotion, a powder, a soap, a surfactant-containing cleanser, an oil, a powder foundation, an emulsion foundation, a wax foundation and a spray.
  • the cosmetic compositions of this invention may be formulated in the form of skin softner, nutrient liquid, nutrient cream, massage cream, essence, eye cream, cleansing cream, cleansing foam, cleansing water, pack, spray or powder.
  • the cosmetic composition is in the form of paste, cream or gel, it may comprise animal and vegetable fats, waxes, paraffins, starch, tragacanth, cellulose derivatives, polyethylene glycols, silicones, bentonites, silica, talc, zinc oxide or mixtures of these substances.
  • powder or spray it may comprise lactose, talc, silica, aluminum hydroxide, calcium silicate, polyamide powder and mixtures of these substances.
  • Spray may additionally comprise the customary propellants, for example, chlorofluorohydrocarbons, propane/butane or dimethyl ether.
  • the formulation of solution and emulsion may comprise solvent, solubilizer and emulsifier, for example water, ethanol, isopropanol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol, 1,3-butylglycol, oils, glycerol fatty esters, polyethylene glycol and fatty acid esters of sorbitan.
  • solvent solubilizer and emulsifier
  • solubilizer and emulsifier for example water, ethanol, isopropanol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol, 1,3-butylglycol, oils, glycerol fatty esters, polyethylene glycol and fatty acid esters of sorbitan.
  • the formulation of suspension may comprise liquid diluents, for example water, ethanol or propylene glycol, suspending agents, for example ethoxylated isosteary alcohols, polyoxyethylene sorbitol esters and poly oxyethylene sorbitan esters, micocrystalline cellulose, aluminum metahydroxide, bentonite, agar and tragacanth or mixtures of these substances.
  • liquid diluents for example water, ethanol or propylene glycol
  • suspending agents for example ethoxylated isosteary alcohols, polyoxyethylene sorbitol esters and poly oxyethylene sorbitan esters, micocrystalline cellulose, aluminum metahydroxide, bentonite, agar and tragacanth or mixtures of these substances.
  • the formulation of cleansing compositions with surfactant may comprise aliphatic alcohol sulfate, aliphatic alcohol ether sulfate, sulfosucinnate monoester, isothinate, imidazolium derivatives, methyltaurate, sarcocinate, fatty acid amide ether sulfate, alkyl amido betain, aliphatic alcohol, fatty acid glyceride, fatty acid diethanolamide, vegetable oil, lanoline derivatives, ethoxylated glycerol fatty acid ester or mixtures of these ingredients.
  • the cosmetic compositions of this invention may contain auxiliaries as well as peptides as active ingredients and carriers.
  • auxiliaries include preservatives, antioxidants, stabilizers, solubilizers, vitamins, colorants, odor improvers or mixtures of these substances.
  • the IGF-1-mimicking peptides of the present invention posses identical functions or activities to natural-occurring IGF-1;
  • the peptides of the present invention is much higher stability and skin penetration potency than natural-occurring IGF-1;
  • composition comprising the peptide exhibits excellent treatment and prevention efficacies on diseases or conditions demanding IGF-1 activities;
  • the peptide of this invention can be advantageously applied to pharmaceutical compositions, quasi-drugs and cosmetics.
  • FIG. 1 represents the amino acid sequence of natural-occurring insulin like growth factor-1 (IGF-1) and selected regions for preparing peptides of the present invention.
  • IGF-1 insulin like growth factor-1
  • FIG. 2 schematically represents processes for preparing peptides of the present invention.
  • FIG. 3 represents results of high performance liquid chromatography analysis of the peptide of SEQ ID NO:1 prepared in Example.
  • FIG. 4 represents results of high performance liquid chromatography analysis of the peptide of SEQ ID NO:2 prepared in Example.
  • FIG. 5 represents results of high performance liquid chromatography analysis of the peptide of SEQ ID NO:3 prepared in Example.
  • FIG. 6 represents results of high performance liquid chromatography analysis of the peptide of SEQ ID NO:4 prepared in Example.
  • FIG. 7 represents results of high performance liquid chromatography analysis of the peptide of SEQ ID NO:5 prepared in Example.
  • FIG. 8 shows influence of peptides of this invention on growth of keratinocytes.
  • the numbers indicated in x-axis are types and amounts of peptides.
  • “1 — 10” and “1 — 1000” represent the results of treatments with 10 ng and 1000 ng of the peptide of SEQ ID NO:1, respectively.
  • FIG. 9 a represents microscopic images demonstrating influence of peptides of this invention on growth of keratinocytes.
  • Peptides 1-5 denote peptides of SEQ ID NOs:1-5, respectively.
  • FIG. 9 b represents microscopic images demonstrating influence of peptides of this invention on growth of fibroblasts.
  • Peptides 1-5 denote peptides of SEQ ID NOs:1-5, respectively.
  • FIG. 10 represents analysis results on elevated procollagen level in cell culture incubated with peptides of this invention.
  • Pep 1-5 denote peptides of SEQ ID NOs:1-5, respectively.
  • FIGS. 11 a and 11 b represent analysis results on elevated laminin ( FIG. 11 a ) and fibronectin ( FIG. 11 b ) levels in cell culture incubated with peptides of this invention.
  • Pep 1-5 denote peptides of SEQ ID NOs:1-5, respectively.
  • FIG. 12 represents images demonstrating that the peptide of the present invention binds to receptors on cell.
  • FIG. 13 is a microscope image to show the change in skin thickness of Balb C mice administered with cosmetics containing the peptide of the present invention.
  • Peptides 1-5 denote peptides of SEQ ID NOs:1-5, respectively.
  • FIG. 14 is a microscope image to show the skin penetration of the fluorescent peptide of the present invention.
  • chloro trityl chloride resin CTL resin, Nova Biochem Cat No. 01-64-0021
  • MC methylene chloride
  • DMF dimethylformamide
  • a deprotection solution (20% piperidine/DMF) were added to the reactor and agitated for 10 min at room temperature and solution removal was performed. After adding the same volume of the deprotection solution, the reaction was undertaken for 10 min and solution was removed, followed by washing sequentially with DMF, MC and DMF to yield Arg-(pbf)-CTL resins. 10 ml of DMF solution was added to a new reactor and then 200 mmole of Fmoc-Arg(pbf)-OH, 200 mmole of HoBt and 200 mmole of Bop were added, followed by agitation for solubilization.
  • a deprotection solution 20% piperidine/DMF
  • the prepared peptidyl resins were washed three times sequentially with DMF, MC and methanol, dried under the flow of nitrogen gas, completely dried by vacuum-drying under P 2 O 5 and then reacted with 30 ml of the leaving solution [containing 81.5% TFA, 5% distilled water, 5% thioanisole, 5% phenol, 2.5% EDT and 1% TIS] for 2 hr at room temperature upon intermittent agitating.
  • the resin was filtered and washed with a small volume of TFA solution, after which the filtrate was combined with the mother liquor.
  • SEQ ID NO:2 (Gly-Tyr-Gly-Ser-Ser-Ser-Arg-Arg-Ala-Pro-Gln-Thr: GYGSSSRRAPQT) corresponds to amino acids 30-41 of IGF-1
  • SEQ ID NO:3 (Glu-Ser-Ser-Phe-Arg-Ser-Ser-Asp-Leu-Arg-Arg-Leu: ESSFRSSDLRRL) to amino acids 46-57 of IGF-1
  • SEQ ID NO:4 (Cys-Asp-Leu-Arg-Arg-Leu-Glu-Met-Tyr-Cys: CDLRRLEMYC) to amino acids 52-61 of IGF-1
  • SEQ ID NO:5 (Arg-Arg-Leu-Glu-Met-Tyr-Cys-Ala-Pro-Leu-Lys-Pro: RRLEMYCAPLKP) to amino acids
  • chloro trityl chloride resin CTL resin, Nova Biochem Cat No. 01-64-0021
  • MC methylene chloride
  • DMF dimethylformamide
  • the prepared peptidyl resins were washed three times sequentially with DMF, MC and methanol, dried under the flow of nitrogen gas, completely dried by vacuum-drying under P 2 O 5 and then reacted with 30 ml of the leaving solution [containing 81.5% TFA, 5% distilled water, 5% thioanisole, 5% phenol, 2.5% EDT and 1% TIS] for 2 hr at room temperature upon intermittent agitating.
  • the resin was filtered and washed with a small volume of TFA solution, after which the filtrate was combined with the mother liquor.
  • SRB Sulforhodamine B colorimetric assay was carried out using HaCaT kerationcytes and NIH3T3 fibroblasts according to Rizzino et al method (Rizzino, et al. Cancer Res., 48:4266(1988)).
  • HaCaT ketatinocytes (The Korean Cell Line Bank) and NIH3T3 fibroblasts (The Korean Cell Line Bank) were cultured in 250 ml-flasks containing EMEM (Eagle's minimal essential media, Gibco, U.S.A.) supplemented with 100% FBS (fetal bovine serum). Cells cultured were treated with 0.25% trypsin solution to detach cells from the bottom of culture flasks and centrifuged to collect cell pellets. Cells were resuspended in EMEM not containing FBS, its aliquot (4 ⁇ 10 3 cells) was added to each well of 96-well plates and cultured under 7% CO 2 for 24 hr at 37° C.
  • EMEM Eagle's minimal essential media, Gibco, U.S.A.
  • FBS fetal bovine serum
  • FIG. 8 represents the analysis data for growth of keratinocytes. After 72 hr-treatment with peptides, the growth pattern of keratinocytes was observed under microscope ( FIG. 9 a : keratinocytes, FIG. 9 b : fibroblasts).
  • the five peptides of this invention dramatically promote growth of keratinocytes, which is much better effects than natural-occurring IGF-1.
  • FIGS. 9 a and 9 b it was observed that the peptides of this invention facilitate growth of fibroblasts as well as keratinocytes.
  • keratinocytes was treated with the peptides of this invention and the levels of procollagen, laminin and fibronectin, indicators to show the improvement in skin wrinkle, were examined. Kerationcytes cultured for 48 hr were incubated with 5 ⁇ mole of peptides of the present invention for 72 hr. The quantification was conducted using Procollagen ELISA kit (Takara, Japan), Laminin ELISA kit (CHEMICON, USA) and Fibronectin kit (Takara, Japan).
  • the peptides of the present invention were revealed to elevate the level of procollagen, laminin and fibronectin in cells.
  • 3T3 fibroblasts were cultured in 250 ml-flasks containing EMEM (Eagle's minimal essential media, Gibco, U.S.A.) supplemented with 100% FBS (fetal bovine serum). After 48-hr culture, the supernatant of the medium was discarded and the remainder was washed once with PBS (phosphate buffered saline).
  • FITC-b-Ala-CDLRRLEMYC prepared in Preparation Example 4 was dissolved in DMSO and PBS to a concentration of 1 mg/ml and incubated for 1 hr with cells cultured. After removing medium, cells were completely washed and their surface was observed under fluorescence and optical microscopes.
  • FIG. 12 represents the results of measurement of binding of the FITC-labeled peptide to receptors on cell.
  • the peptide of the present invention binds to receptors on surface of fibroblasts.
  • peptide synthesized in Preparation Example 3 50 mg was dissolved in 500 ml of distilled water.
  • the peptide solution was mixed with 5 g lecithin, 0.3 ml sodium oleate, 50 ml ethanol and a small amount of oils and its volume was adjusted with distilled water to 1 L.
  • the resulting solution was subjected to a microfluidizer under high pressure for emulsification, thereby providing nanosomes having 100-nm size.
  • the nanosomes were prepared to have a final concentration of about 50 ppm and used as ingredients for cosmetics.
  • a skin softner containing peptide nanosomes prepared in Formulation Example 1 was formulated according to the following composition:
  • a nutrient cream containing peptide nanosomes prepared in Formulation Example 1 was formulated according to the following composition:
  • a mouthwash containing peptides prepared was formulated according to the following composition:
  • Toothpaste containing peptides prepared was formulated according to the following composition:
  • the nutrient cream formulated in Formulation Example 3 was applied onto mouse skin.
  • mice 6-old-week Balb C male mice (Central Lab. Animal, Inc., Korea) were subjected to one-week stabilization and hairs of their back were partially removed using thioglycolic acid-containing cream. Mice were divided into two groups; one group of which was topically administered with the cream comprising peptide-containing nanosomes and the other group of which was topically administered with cream not containing nanosomes. The application of creams was performed every morning (A.M. 8:30) and evening (P.M. 3:1) for 5 days in the dose of 100 mg. After the application, mice were sacrificed by cervical dislocation and their skin tissues were paraffinized. Paraffinized tissues were sectioned using a microtomb in a thickness of 8 ⁇ m and were stained with hematoxyline/eosin, followed by observation under an optical microscope.
  • the nanosome cosmetics comprising the peptide of this invention permitted to promote the formation and growth of keratinocyte layer and epidermal layer.
  • the FITC-labeled peptide (SEQ ID NO:3) of this invention was uniformly localized in cells.
  • the peptides of this invention accelerate the growth of keratinocytes and epidermal layer, thereby improving skin conditions.
  • the IGF-1 mimicking peptides of this invention have identical functions or actions to natural-occurring IGF-1 and much better stability and skin permeation than natural-occurring IGF-1.
  • the composition comprising the peptides of this invention can exhibit excellent efficacies on the treatment, prevention and improvement of diseases or conditions demanding IGF-1 activities.
  • the peptides of this invention can be advantageously applied to pharmaceutical compositions, quasi-drugs and cosmetics.

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JP5559406B2 (ja) * 2013-09-11 2014-07-23 株式会社 資生堂 シミを有する蓋然性を評価する方法
BR102013025813A2 (pt) * 2013-10-04 2015-08-25 Sanofi Aventis Farmacêutica Ltda Composição para tratamento de úlceras diabéticas, processo de preparação da composição e seu uso
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KR102627248B1 (ko) 2018-02-26 2024-01-19 싸이노슈어, 엘엘씨 Q-스위치드 캐비티 덤핑 서브 나노초 레이저
CN110642937B (zh) * 2019-10-11 2021-04-06 南开大学 多肽衍生物、纳米纤维及其应用
WO2021118323A1 (ko) * 2019-12-13 2021-06-17 (주)넥스젠바이오텍 텐덤 인슐린 유사 성장인자-1 및 이를 유효성분으로 함유하는 탈모방지 또는 발모촉진용 조성물
CN111568781A (zh) * 2020-06-23 2020-08-25 上海美月生物科技有限公司 一种护肤凝胶及其制备方法

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US10351597B2 (en) 2015-04-28 2019-07-16 Caregen Co., Ltd. Peptide with anti-obesity and anti-diabetes activity and use thereof
US10626145B2 (en) 2015-04-28 2020-04-21 Caregen Co., Ltd. Peptide with anti-obesity and anti-diabetes activity and use thereof
US10738081B2 (en) 2015-04-28 2020-08-11 Caregen Co., Ltd. Peptide with anti-obesity and anti-diabetes activity and use thereof
US11186611B2 (en) 2015-04-28 2021-11-30 Caregen Co., Ltd. Peptide with anti-obesity and anti-diabetes activity and use thereof

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EP2270039A1 (de) 2011-01-05
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US20100278756A1 (en) 2010-11-04
WO2007102686A1 (en) 2007-09-13
EP2270039B1 (de) 2013-05-29
KR100861914B1 (ko) 2008-10-09
KR20070091568A (ko) 2007-09-11
EP1989226A4 (de) 2009-11-18
EP1989226A1 (de) 2008-11-12
JP2009529036A (ja) 2009-08-13
WO2007102686A8 (en) 2010-03-04
CN101395179B (zh) 2013-01-02
CN101395179A (zh) 2009-03-25

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