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Peptide nanoparticles and uses therefor

a technology of nanoparticles and peptides, which is applied in the field of peptide nanoparticles and uses therefor, can solve the problems of less effective, less effective, and less effective biologically, and achieve the effect of preserving the biological activity of the peptide, reducing the cost of production of inventive cosmetic and/or pharmaceutical preparations, and simplifying and reducing the cost of production

Inactive Publication Date: 2010-07-08
ANTERIOS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention describes nanoparticles that can be applied to the skin and deliver unmodified peptides through the skin's layers. These nanoparticles can be used in various skincare and cosmetic products, without the need for injection or chemical abrasion. The use of unmodified peptides simplifies the production process and preserves their biological activity. The technical effect of this invention is the ability to deliver peptides through the skin's layers, providing a non-invasive and cost-effective method for transdermal delivery."

Problems solved by technology

However, a major problem in achieving the potential cosmetic and therapeutic effects of these peptides in humans has been the transdermal delivery of the peptides across the outer skin barrier (stratum corneum) to the site of biological action, e.g., the extra-cellular matrix or underlying muscle (Robinson, et al., 2005, International J. Cosmetic Science 27:155; incorporated herein by reference).
These chemical modifications are disadvantageous because they are expensive and time-consuming, which negatively impact the commercial manufacture of a product containing these peptides.
Chemical modifications of the peptides can also decrease the biological activity of the peptide by decreasing its ability to bind at the cellular receptor site of biological activity (through, for example, steric interference), thus making it less effective.
A peptide that is less effective biologically would be less effective for cosmetic or therapeutic purposes.
Comparably, a peptide that is less effective biologically would need to be administered at higher levels to achieve its desired biological effect (if the effect were even possible), which would be a cost disadvantage for the commercial manufacture of a product.

Method used

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  • Peptide nanoparticles and uses therefor
  • Peptide nanoparticles and uses therefor
  • Peptide nanoparticles and uses therefor

Examples

Experimental program
Comparison scheme
Effect test

example 1

Pentapeptide Nanoparticle Formulation

[0143]This example presents peptide nanoparticle compositions comprising a nanoemulsion containing a pentapeptide, KTTKS (SEQ ID NO.: 1), that is known to have biological activity on the skin structures (Katayama et al., supra).

[0144]A pentapeptide nanoemulsion preparation was prepared as follows:[0145]800 mg of soybean oil and 800 mg of Tween 80 were stirred in a sterile vial for 5 minutes;[0146]8.4 ml water with 0.0001 g of the peptide KTTTS (SEQ ID NO.: 1) was added and stirred for 20 minutes;[0147]The sample was homogenized for 1 minute; The sample was stirred for 20 minutes; and[0148]The sample was microfluidized once at 23,000 psi.

[0149]The resulting pentapeptide nanoemulsion was evaluated for particle size using the Malvern Nano S particle sizer capable of sizing particles between about 0.6 nm 6000 nm. The pentapeptide nanoemulsion preparation had two particle size peaks having an average particle size of 106 nm (Table 2).

TABLE 2Particle S...

example 2

Pentapeptide Nanoparticle Formulation and Transdermal Penetration with Biological Effect

[0150]This example presents peptide nanoparticles comprising a nanoemulsion containing a pentapeptide, KTTKS (SEQ ID NO.: 1), that is known to have biological activity on the skin structures (Katayama et al., supra; incorporated herein by reference). This example demonstrates the biological efficacy on the skin of transdermally applying a peptide nanoparticle, in this case KTTKS (SEQ ID NO.: 1).

Materials and Methods

[0151]A pentapeptide nanoemulsion preparation was prepared as follows:[0152]5.6 g of Labrafac WL 1349 oil and 5.6 g of Tween 80 were stirred in a sterile beaker for 5 minutes;[0153]58.8 g Reagent Grade water was placed in a separate beaker; 0.010 g of the peptide KTTTS (SEQ ID NO.: 1) was added into the water and stirred for 20 minutes;[0154]The contents of the first beaker were added to the contents of the beaker (i.e., the water and peptide) and then stirred for 20 minutes; and[0155]...

example 3

Skin Thickening and Extra-Cellular-Matrix Stimulator Effects on Mice Through Transdermal Application of a Peptide Nanoparticle: Effect of Varying Concentration of Peptide in the Nanoparticle

[0174]This example demonstrates the impact of varying the concentration of peptide in the nanoparticle on the biological efficacy on the skin of transdermally applying a peptide nanoparticle.

Materials and Methods

[0175]The experiment described Example 3 is repeated, except that the concentration of peptide in the Treatment cream is decreased by a factor of ten or increased by a factor of ten.

Results and Conclusion

[0176]The results are expected to show that, on average, those mice treated with the peptide concentration increased by a factor of ten have statistically thicker skin those mice treated with the increased peptide concentration. The results are expected to show that, on average, those mice treated with the peptide concentration increased by a factor of ten have statistically more collagen...

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Abstract

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.

Description

RELATED APPLICATIONS[0001]This application claims priority under 35 U.S.C. §119(e) to U.S. provisional patent application, U.S. Ser. No. 60 / 872,206, filed Dec. 1, 2006 (“the '206 application”). The entire contents of the '206 application are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]Peptides have been shown to have beneficial cosmetic and therapeutic effects on the skin. In experimental models, short peptides (of length up to 30 amino acids) have been shown to stimulate collagen growth in the extra-cellular matrix of the skin, which may improve the appearance of skin as well as improve the healing of damaged skin (Katayama, et al., 1993, J. Biol. Chem., 268:9941; incorporated herein by reference). Modified peptides have also been shown to decrease the appearance of wrinkles through the modulation of enzymes that influence muscular contractions in the muscles underlying the skin that contribute to wrinkle formation (Lupo, 2005, Dermatol. Surg., 31:832; incorpo...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K8/64A61K9/14A61K38/05A61K38/06A61K38/07A61K38/08A61K38/10A61K38/16A61P17/02A61Q1/06A61Q17/04A61Q19/00A61Q19/08A61K8/04C12Q1/02
CPCA61K8/044A61K8/11A61K8/64A61K38/2207A61K2800/413A61Q1/06A61Q19/00A61Q19/08B82Y5/00A61K8/0241A61K9/14A61K38/08A61Q17/04A61K8/04A61K9/10A61K2800/21A61K2800/10A61P1/14A61P17/00A61P17/02A61P17/18A61P25/00A61P31/12A61P43/00A61K8/064A61K8/068A61K8/92
Inventor EDELSON, JONATHANKOTYLA, TIMOTHY
Owner ANTERIOS INC
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