Skin Care Compositions and Treatments
The invention is directed compositions containing growth agents synthesized from cultured cells from skin. Skin cells such as keratinocytes and dermal fibroblasts are cultured in vitro in cell medium and in the course of culture the cultured cells synthesize and secrete agents into the cell medium. The medium containing agents are collected and incorporated into pharmaceutical or cosmetic preparations to treat an individual. The preparation is applied and has a rejuvenating effect on the cells and tissue.
1 . A composition for use as a pharmaceutical preparation or as a skin care product comprising:
(a) a carrier base;
(b) a conditioned cell medium containing one or more cultured skin agents synthesized and secreted from cultured keratinocytes and fibroblasts; and,
(c) a penetration enhancer.
2 . The composition of claim 1 further comprising
an antioxidant.
3 . The composition of claim 1 , wherein the keratinocytes and fibroblasts are a co-culture in a bilayer configuration that resembles the native configuration of skin.
4 . (canceled)
5 . The composition of claim 3 , wherein the co-culture comprises fibroblasts in an endogenously produced matrix and keratinocytes disposed thereon.
6 - 8 . (canceled)
9 . The composition of claim 1 , wherein the penetration enhancer is selected from the group consisting of: a chemical penetration enhancer, an active penetration enhancer, or a follicular penetration enhancer.
10 . (canceled)
11 . A method for producing a preparation containing a conditioned cell medium containing one or more cultured skin agents produced by cultured skin cells, comprising:
(a) culturing skin cells in a nutrient containing medium to grow the skin cells and inducing skin cells to synthesize and secrete one or more cultured skin agents into the medium;
(b) separating the conditioned medium containing one or more cultured skin agents from the cultured skin cells;
(c) increasing the concentration of the cultured skin agents in the conditioned cell medium;
(d) reducing the salt concentration in the conditioned medium; and
(e) producing a preparation comprising the conditioned medium containing one or more cultured skin agents.
12 . The method of claim 11 , wherein the skin cells are keratinocytes and fibroblasts co-cultured in a bilayer configuration that resembles the native configuration of skin.
13 . (canceled)
14 . The method of claim 12 , wherein the bilayer configuration comprises fibroblasts in an endogenously produced matrix and keratinocytes disposed thereon.
15 - 17 . (canceled)
18 . The method of claim 11 , wherein the concentration of the cultured skin agents are increased between 5 and 30 times.
19 - 25 . (canceled)
26 . The method of claim 11 , wherein conditioned cell media is pre-filtered to remove cells and cell debris before concentration.
27 - 37 . (canceled)
38 . A skin treatment comprising a topically applied composition for increasing cell proliferation and decreasing cell senescence formulated with conditioned cell medium containing one or more cultured skin agents synthesized and secreted from cultured skin cells.
39 . The composition of claim 1 , wherein the penetration enhancer is a
silicone-based penetration enhancer.
40 . The composition of claim 39 , wherein the silicone-based penetration enhancer is selected from the group consisting of-cyclomethicone and dimethicone copolyol.
41 - 42 . (canceled)
43 . The composition of claim 1 , wherein the conditioned cell medium comprises components that are free of undefined animal organ or tissue extracts selected from the group consisting of: serum, pituitary extract, hypothalamic extract, placental extract, embryonic extract, and proteins and factors secreted by feeder cells.
44 . The method of claim 11 , wherein the nutrient containing medium comprises components that are free of undefined animal organ or tissue extracts selected from the group consisting of: serum, pituitary extract, hypothalamic extract, placental extract, embryonic extract, and proteins and factors secreted by feeder cells.