Engineered skin equivalent, method of manufacture thereof and products derived therefrom

Patent metadata

Field	Value
Publication number	US-11091639-B2
Application number	US-202016892839-A
Country	US
Kind code	B2
Filing date	Jun 4, 2020
Priority date	Apr 21, 2016
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

Disclosed herein are synthetic leathers, artificial epidermal layers, artificial dermal layers, layered structures, products produced therefrom and methods of producing the same.

First claim

What is claimed is:

1. A composition comprising: an isolated artificial dermal layer comprising an immortalized keratinocyte cultured in vitro, and a scaffold, wherein the keratinocyte is at least partially in contact with the scaffold.

2. The composition of claim 1 , wherein at least a portion of a cell layer of the isolated artificial dermal layer has been removed.

3. The composition of claim 1 , wherein the scaffold comprises a natural scaffold, a synthetic scaffold or a combination thereof.

4. The composition of claim 3 , comprising the synthetic scaffold.

5. The composition of claim 3 , comprising the natural scaffold.

6. The composition of claim 1 , wherein the scaffold comprises an at least partially hollow structure.

7. The composition of claim 1 , wherein the scaffold comprises a collagen, a cellulose, a cotton, an acetate, an acrylic, a latex, a linen, a nylon, a rayon, a velvet, a modacrylic, a saran, a vinyon, a wool, a jute, a hemp, a bamboo, a flax, an alginate, a fibronectin, a poly-p-phenyleneterephthalamide, a polyethylene, a polypropylene, a carrageenan, an agarose, a fibrin, a glass, a silica, an aramid, a carbon, a poly(tetrafluoroethylene), a polyvinyl chloride, a polyvinylidene chloride, a polyvinyl alcohol, a polyacrylonitrile, a chitosan, a polyurethane, a poly(urethane-urea), a polyethylene phthalate, a chitin, a elastin, a keratin, a polyhydroxyalkanoate, a dextran, a pullane, a polyhyaluronic acid, a poly(3-hydroxyalkanoate), a poly(3-hydroxyoctanoate), a poly(3-hydroxyfatty acid), a poly(caprolactone), a poly(para-dioxanone), a laminin, a zein, a casein, a gelatin, a gluten, albumen, a poly L-lactic acid (PLA), a polyglycolic acid (PGA), or any combination thereof.

8. The composition of claim 1 , wherein the composition further comprises a fibroblast.

9. The composition of claim 8 , wherein the fibroblast expresses CD 10 , CD73, CD44, CD90, type I collagen, type III collagen, prolyl-4-hydroxylase beta, or a combination thereof.

10. The composition of claim 1 , wherein the artificial dermal layer comprises a collagen.

11. The composition of claim 10 , wherein the collagen is produced at least in part by a collagen producing cell, is separately added, or any combination thereof.

12. The composition of claim 11 , wherein the collagen producing cell comprises an epithelial cell, a fibroblast, a comeocyte, a Langerhans cell, a basal cell, or a combination thereof.

13. The composition of claim 12 , wherein the collagen producing cell comprises the epithelial cell wherein the epithelial cell comprises a squamous cell, a cuboidal cell, a columnar cell, a basal cell, or a combination thereof.

14. The composition of claim 1 , wherein the artificial dermal layer further comprises one or more of keratin, elastin, gelatin, proteoglycan, dermatan sulfate proteoglycan, glycosoaminoglycan, fibronectin, laminin, dermatopontin, lipid, fatty acid, carbohydrate, or a combination thereof.

15. The composition of claim 1 , wherein a thickness of the isolated artificial dermal layer ranges from about 0.02 mm to about 5 mm.

16. The composition of claim 1 , wherein the artificial dermal layer further comprises a hair follicle.

17. The composition of claim 16 , wherein the artificial dermal layer further comprises fur.

18. The composition of claim 1 , wherein the immortalized keratinocyte is adhered to the scaffold.

19. The compostion of claim 1 , wherein the immortalized keratinocyte comprises a collagen producing cell.

20. The compostion of claim 1 , wherein the keratinocyte is derived from a mammal, a fish, a bird or a reptile.

21. The compostion of claim 20 , comprising the mammal, wherein the mammal comprises an antelope, a bear, a beaver, a bison, a boar, a camel, a caribou, a cat, a cattle, a deer, a dog, an elephant, an elk, a fox, a giraffe, a goat, a hare, a horse, an ibex, a kangaroo, a lion, a llama, a lynx, a mink, a moose, an oxen, a peccary, a pig, a rabbit, a rhino, a seal, a sheep, a squirrel, a tiger, a whale, a wolf, a yak, or a zebra.

22. The compostion of claim 20 , comprising the fish, wherein the fish comprises an anchovy, a bass, a catfish, a carp, a cod, an eel, a flounder, a fugu, a grouper, a haddock, a halibut, a herring, a mackerel, a mahi-mahi, a manta ray, a marlin, an orange roughy, a perch, a pike, a pollock, a salmon, a sardine, a shark, a snapper, a sole, a stingray, a swordfish, a tilapia, a trout, a tuna, or a walleye.

23. The compostion of claim 20 , comprising the bird, wherein the bird comprises a chicken, a duck, an emu, a goose, a grouse, an ostrich, a pheasant, a pigeon, a quail, or a turkey.

24. The compostion of claim 20 , comprising the reptile, wherein the reptile comprises a turtle, a snake, a crocodile, or an alligator.

Assignees

• Vitrolabs Inc
• King S College London

Inventors

• Helgason Ingvar
• Ilic Dusko

Classifications

• C12N2533/54

  Collagen; Gelatin · CPC title

• C14C3/00

  Tanning; Compositions for tanning · CPC title

• C12N2502/091

  melanocytes · CPC title

• C12N5/0698 Primary

  Skin equivalents · CPC title

• C12N2533/30

  Synthetic polymers · CPC title