IP Library › Granted Patent US 10,500,308
Granted Patent B2
US 10,500,308 · App. 14/710,964 · Granted Dec 10, 2019

Decellularized adipose tissue

Inventor: Lauren E. Flynn (London, CA)
Assignee: Queen's University at Kingston
A61L27/3604A61L27/3683A61L27/3834A61L27/50C12N5/0653C12N11/02A61L2300/64A61L2400/04A61L2400/06A61L2430/40C12N2533/90
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Quick Facts
Patent No.
US 10,500,308
App. No.
14/710,964
Granted
Dec 10, 2019
Kind
B2
Abstract

This invention provides a method for decellularizing adipose tissue, comprising subjecting the adipose tissue to one or more incubations in an enzymatic digestion solution containing one or more enzymes, and one or more solvent extractions, wherein decellularized adipose tissue comprising an extracellular matrix with well-preserved three-dimensional structure is obtained. The invention also provides a decellularized adipose tissue comprising an extracellular matrix with well-preserved three-dimensional architecture, and bioscaffolds, microcarrier beads, and coatings comprising the decellularized adipose tissue.

Claims (30)

1. A decellularized adipose tissue comprising an extracellular matrix including fibrous collagen and network-type collagen including collagen type IV with basement membrane organization, with well-preserved three-dimensional architecture.

2. The decellularized adipose tissue of claim 1 , wherein the decellularized adipose tissue is substantially devoid of intact adipose cells.

3. The decellularized adipose tissue of claim 1 , wherein the decellularized adipose tissue is substantially free of immunogenic components.

4. The decellularized adipose tissue of claim 1 , including one or more of proteoglycan, glycoprotein, glycosaminoglycan, laminin, or fibronectin.

5. The decellularized adipose tissue of claim 1 , for use as a cell culture substrate.

6. The decellularized adipose tissue of claim 5 , wherein the cell culture substrate is for cell expansion and/or cell differentiation and/or for the production of bioproducts comprising tissue and one or more proteins.

7. The decellularized adipose tissue of claim 1 , comprising at least one additive selected from seeded cells, a biomaterial, a pharmaceutical agent, a hormone, and a growth factor.

8. The decellularized adipose tissue of claim 1 , comprising at least one additive selected from a hydrogel and a derivative of one or more of collagen, gelatin, hyaluronan, chondroitin sulphate, chitosan, alginate, silk, fibrin, protein, proteoglycan, glycosaminoglycan, and polysaccharide.

9. The decellularized adipose tissue of claim 1 , comprising a hydrogel based on one or more of poly(ethylene glycol) (PEG), polyethylene, polyurethane, polylactic acid (PLA), polyglycolic acid (PGA), and polylactic co-glycolic acid (PLGA.

10. The decellularized adipose tissue of claim 1 , wherein the decellularized adipose tissue is digested and solubilized into a liquid.

11. A bioscaffold prepared from the decellularized adipose tissue of claim 1 .

12. The bioscaffold of claim 11 , for use in a surgical procedure.

13. The bioscaffold of claim 12 , wherein the surgical procedure is general surgery, reconstructive surgery, cosmetic surgery, cardiac surgery, orthopaedic surgery, neurosurgery, or urological or gynaecological surgery.

14. The bioscaffold of claim 11 , wherein the bioscaffold is used for wound healing applications.

15. The bioscaffold of claim 11 , wherein the bioscaffold is used as a hemostatic agent.

16. The bioscaffold of claim 11 , comprising one or more materials selected from decellularized extracellular matrix derived from a non-adipose tissue, a synthetic material, a pharmaceutical composition, a hormone, and a growth factor.

17. The bioscaffold of claim 11 , wherein the bioscaffold is autologous or allogenic.

18. The bioscaffold of claim 11 , wherein the bioscaffold is xenogenic.

19. A scaffold prepared from the decellularized adipose tissue of claim 10 .

20. A coating prepared from the decellularized adipose tissue of claim 10 .

21. The coating of claim 20 , wherein the coating is cross-linked.

22. A microcarrier bead prepared from the decellularized adipose tissue of claim 10 .

23. A microcarrier bead including the coating of claim 20 .

24. The microcarrier bead of claim 22 , for use as a cell and/or drug and/or growth factor delivery vehicle.

25. The microcarrier bead of claim 22 , for use as a small volume-bulking agent in cosmetic or reconstructive surgery.

26. The microcarrier bead of claim 22 , for use in fabrication of a composite bioscaffold with decellularized adipose tissue.

27. The microcarrier bead of claim 22 , wherein the microcarrier bead is cross-linked.

28. The microcarrier bead of claim 22 , wherein the microcarrier bead is porous.

29. A particle prepared from the decellularized adipose tissue of claim 1 .

30. A particle including the coating of claim 20 .

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 27, 2022
From: FLYNN, LAUREN E.
To: THE UNIVERSITY OF WESTERN ONTARIO
Reel/Frame 061562/0291 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 19, 2022
From: QUEEN'S UNIVERSITY AT KINGSTON
To: FLYNN, LAUREN E.
Reel/Frame 061463/0477 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 24, 2016
From: FLYNN, LAUREN E.
To: QUEEN'S UNIVERSITY AT KINGSTON
Reel/Frame 037813/0187 →
Continuity (3)
Division 12971531 · Dec 17, 2010
Provisional Application 61287236 · Dec 17, 2009
Related Publication 20160051728A1 · Feb 25, 2016
Cited By (2)
US 12,447,180 US 12,629,453