The present invention provides nanoparticle compositions including one or more peptides. The present invention achieves transdermal delivery of such peptides without the need for peptide modification, or for use of chemical or mechanical abrasion or disruption of skin.
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1. An oil-in-water or water-in-oil dispersion comprising a population of particles, wherein the majority of particles have diameters between approximately 10 and approximately 300 nanometers; wherein the particles have an average particle size ranging between 50 nanometers and about 250 nanometers;
1. An oil-in-water or water-in-oil dispersion comprising a population of particles, wherein the majority of particles have diameters between approximately 10 and approximately 300 nanometers; wherein the particles have an average particle size ranging between 50 nanometers and about 250 nanometers; andwherein said nanoparticles comprise at least one unmodified peptide of length between 2 and 30 amino acids that has biological activity in the skin, subcutaneous tissue or contiguous muscles. 2. The dispersion of claim 1, wherein the majority of particles have a range of diameters between approximately 10 and approximately 250 nanometers. 3. The dispersion of claim 1, wherein the majority of particles have a range of diameters between approximately 10 and approximately 200 nanometers. 4. The dispersion of claim 1, wherein the majority of particles have a range of diameters between approximately 10 and approximately 150 nanometers. 5. The dispersion of claim 1, wherein the majority of particles have a range of diameters between approximately 10 and approximately 120 nanometers. 6. The dispersion of claim 1, wherein the majority of particles have a range of diameters between approximately 10 and approximately 100 nanometers. 7. The dispersion of claim 1, wherein the majority of particles have a range of diameters between approximately 10 and approximately 50 nanometers. 8. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises KTTKS (SEQ ID NO: 1). 9. The dispersion of claim 1 wherein the amino acid sequence is selected from the group consisting of EYKTTKSSRL (SEQ ID NO: 2), GKTVIEYKTTKS (SEQ ID NO: 5), GKTVIEYKTTKSSRL (SEQ ID NO: 6), WGKTVIEYKTTKSSRLPIID (SEQ ID NO: 7), CTSHTGAWGKTVIEYKTTKS (SEQ ID NO: 8), and any combination thereof. 10. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises EYKTTKSSRL (SEQ ID NO: 2). 11. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises VIEYKTTK (SEQ ID NO: 3). 12. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises KTTK (SEQ ID NO: 4). 13. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises GKTVIEYKTTKS (SEQ ID NO: 5). 14. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises GKTVIEYKTTKSSRL (SEQ ID NO: 6). 15. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises WGKTVIEYKTTKSSRLPIID (SEQ ID NO: 7). 16. The dispersion of claim 1 wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises CTSHTGAWGKTVIEYKTTKS (SEQ ID NO: 8). 17. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises TTKS (SEQ ID NO: 9). 18. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises EEMQRR (SEQ ID NO: 10). 19. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises gastrin-releasing peptide. 20. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises VGVAPG (SEQ ID NO: 11). 21. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises YYRADA (SEQ ID NO: 12). 22. The dispersion of claim 1 wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises GHK (SEQ ID NO: 13). 23. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises TSLDASIIWAMMQN (SEQ ID NO: 14). 24. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises interferon. 25. The dispersion of claim 1, wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises interferon inducer. 26. The dispersion of claim 1 wherein said nanoparticles comprise an unmodified peptide whose amino acid sequence comprises P144. 27. The dispersion of claim 1, wherein the nanoparticle is a nanoemulsion. 28. The dispersion of claim 27, wherein the nanoemulsion comprises at least one oil, at least one surfactant, water, and the unmodified peptide. 29. The dispersion of claim 27, wherein the nanoemulsion comprises a single oil, a single surfactant, water, and the unmodified peptide. 30. The dispersion of claim 1, further comprising an oil, and wherein the oil is selected from the group consisting of almond oil, apricot oil, kernel oil, avocado oil, babassu oil, bergamot oil, black current seed oil, borage oil, cade oil, camomile oil, canola oil, caraway oil, carnauba oil, castor oil, cinnamon oil, cocoa butter, coconut oil, cod liver oil, coffee oil, corn oil, cotton seed oil, emu oil, eucalyptus oil, evening primrose oil, fish oil, flaxseed oil, geraniol oil, gourd oil, grape seed oil, hazel nut oil, hyssop oil, jojoba oil, kukui nut oil, lavandin oil, lavender oil, lemon oil, litsea cubeba oil, macademia nut oil, mallow oil, mango seed oil, meadowfoam seed oil, mink oil, nutmeg oil, olive oil, orange oil, orange roughy oil, palm oil, palm kernel oil, peach kernel oil, peanut oil poppy seed oil, pumpkin seed oil, rapeseed oil, rice bran oil, rosemary oil, safflower oil, sandalwood oil, sasquana oil, savoury oil, sea buckthorn oil, sesame oil, shea butter, soybean oil, sunflower oil, tea tree oil, thistle oil, tsubaki oil, vetiver oil, walnut oil, wheat germ oil; butyl stearate; caprylic triglyceride; capric triglyceride; cyclomethicone; diethyl sebacate; dimethicone 360; isopropyl myristate; mineral oil; octyldodecanol; oleyl alcohol; silicone oil; short chain triglycerides; medium chain triglycerides; long chain triglycerides; saturated oils thereof; and unsaturated oils thereof. 31. The dispersion of claim 30, wherein the oil is soybean oil. 32. The dispersion of claim 30, wherein the oil is a medium chain triglyceride. 33. The dispersion of claim 1, further comprising a surfactant, wherein the surfactant is selected from the group consisting of phosphoglycerides; phosphatidylcholines; dipalmitoyl phosphatidylcholine (DPPC); dioleylphosphatidyl ethanolamine (DOPE); dioleyloxypropyltriethylammonium (DOTMA); dioleoylphosphatidylcholine; cholesterol; cholesterol ester; diacylglycerol; diacylglycerolsuccinate; diphosphatidyl glycerol (DPPG); hexanedecanol; fatty alcohols; polyethylene glycol (PEG); polyoxyethylene-9-lauryl ether; a surface active fatty acid; palmitic acid; oleic acid; fatty acids; fatty acid monoglycerides; fatty acid diglycerides; fatty acid amides; sorbitan trioleate; glycocholate; sorbitan monolaurate; polysorbate 20; polysorbate 60; polysorbate 65; polysorbate 80; polysorbate 85; polyoxyethylene monostearate; surfactin; a poloxomer; a sorbitan fatty acid ester; sorbitan trioleate; lecithin; lysolecithin; phosphatidylserine; phosphatidylinositol; sphingomyelin; phosphatidylethanolamine (cephalin); cardiolipin; phosphatidic acid; cerebrosides; dicetylphosphate; dipalmitoylphosphatidylglycerol; stearylamine; dodecylamine; hexadecyl-amine; acetyl palmitate; glycerol ricinoleate; hexadecyl stearate; isopropyl myristate; tyloxapol; poly(ethylene glycol)5000-phosphatidylethanolamine; poly(ethylene glycol)400-monostearate; phospholipids; synthetic detergents having high surfactant properties; natural detergents having high surfactant properties; deoxycholates; cyclodextrins; chaotropic salts; and ion pairing agents. 34. The dispersion of claim 33, wherein the surfactant is a polysorbate. 35. The dispersion of claim 1, further comprising an oil and a surfactant, wherein the ratio of surfactant to oil ranges between 0.5:1 and approximately 2:1 by weight. 36. The dispersion of claim 1, further comprising an oil and a surfactant, wherein the ratio of surfactant to oil is approximately 0.25:1 by weight. 37. The dispersion of claim 1, further comprising an oil and a surfactant, wherein the ratio of surfactant to oil is approximately 0.5:1 by weight. 38. The dispersion of claim 1, further comprising an oil and a surfactant, wherein the ratio of surfactant to oil is approximately 1:1 by weight. 39. The dispersion of claim 1, further comprising an oil and a surfactant, wherein the ratio of surfactant to oil is approximately 2:1 by weight. 40. The dispersion of claim 1, further comprising an oil and a surfactant, wherein the ratio of surfactant to oil is approximately 3:1 by weight. 41. The dispersion of claim 1, wherein the nanoparticle is a nanomicelle. 42. The dispersion of claim 1, further comprising at least one additional component that, together with the dispersion, creates a cream, oil, ointment, gel, spray, lipstick, or sunscreen. 43. A method, comprising steps of: providing a subject; and administering an amount of an oil-in-water or water-in-oil dispersion comprising a population of particles, wherein the majority of particles have diameters between approximately 10 and approximately 300 nanometers; wherein the particles have an average particle size ranging between 50 nanometers and about 250 nanometers; andwherein said nanoparticles comprise at least one unmodified peptide of length between 2 and 30 amino acids that has biological activity in the skin, subcutaneous tissue or contiguous muscles, to the subject's skin such that a cosmetic or therapeutic benefit is attained. 44. The method of claim 43, wherein the dispersion is administered to the subject's skin at effective to thicken the subject's skin or subcutaneous tissue. 45. The method of claim 43, wherein the step of providing a subject comprises providing a subject suffering from, susceptible to, or exhibiting at least one symptom of fine skin lines; and wherein the dispersion is administered to the subject's skin at effective to treat, alleviate, ameliorate, relieve, delay onset of, inhibit progression of, reduce severity of, or reduce incidence of the fine skin lines. 46. The method of claim 43, wherein the step of providing a subject comprises providing a subject suffering from, susceptible to, or exhibiting at least one symptom of facial wrinkles; and wherein the dispersion is administered to the subject's skin at effective to treat, alleviate, ameliorate, relieve, delay onset of, inhibit progression of, reduce severity of, or reduce incidence of facial wrinkles. 47. The method of claim 43, providing a subject; and wherein the dispersion is administered to the subject's skin at effective to improve the appearance of the subject's skin. 48. The method of claim 43, providing a subject; and wherein the dispersion is administered to the subject's skin at effective to maintain the appearance of the subject's skin. 49. The method of claim 43, wherein the step of providing a subject comprises providing a subject suffering from a wound; and wherein the dispersion is administered to the subject's skin at an amount effective to treat, alleviate, ameliorate, relieve, inhibit progression of, or reduce severity of the wound. 50. The method of claim 43, wherein the step of providing a subject comprises providing a subject suffering from, susceptible to, or exhibiting at least one symptom of hypertrophic scarring, keloids, localized sclerosis, systemic sclerosis, or other condition characterized by excess accumulation of the extracellular matrix; and wherein the dispersion is administered to the subject's skin at an amount effective to treat, alleviate, ameliorate, relieve, delay onset of, inhibit progression of, reduce severity of, or reduce incidence of the at least one symptom associated with hypertrophic scarring, keloids, localized sclerosis, systemic sclerosis, or other condition characterized by excess accumulation of the extracellular matrix. 51. The method of any claim 43, wherein the step of administering is performed by hand, with a gloved finger, with an unprotected finger, by a device, with an adhesive patch, with a spatula, with a swab, with a syringe without a needle, or with a device that permits application of the dispersion to a target site on the skin without applying the dispersion to non-target sites of the skin. 52. The method of claim 43, wherein at least 99% of the unmodified peptide permeates the skin. 53. The method of claim 43, wherein at least 95% of the unmodified peptide permeates the skin. 54. The method of claim 43, wherein at least 90% of the unmodified peptide permeates the skin. 55. The method of claim 43, wherein at least 75% of the unmodified peptide permeates the skin. 56. The method of claim 43, wherein at least 50% of the unmodified peptide permeates the skin. 57. The method of claim 43, wherein at least 25% of the unmodified peptide permeates the skin. 58. The method of claim 43, wherein at least 10% of the unmodified peptide permeates the skin. 59. The method of claim 43, wherein at least 1% of the unmodified peptide permeates the skin. 60. A method, comprising steps of: providing a premix comprising an oil, a surfactant, water, and an unmodified peptide; and subjecting the premix to high shear force or high pressure homogenization for a period of time and under conditions which achieve the dispersion of claim 1. 61. The method of claim 60, wherein the step of subjecting the premix to high shear force or high pressure homogenization is achieved by microfluidization. 62. The method of claim 60, wherein the ratio of oil and surfactant in the premix ranges between approximately 0.5:1 and approximately 2:1 by weight. 63. A method for identifying unmodified peptides that improve the appearance of skin, comprising steps of: providing: at least one sample of skin; andat least one dispersion, wherein the dispersion comprises at least one unmodified peptide;administering the dispersion to the sample of skin; and monitoring the effect of the dispersion on the appearance of the sample of skin relative to the effect of a control substance.
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