AUGMENTATION AND REPAIR OF SPHINCTER DEFECTS WITH CELLS INCLUDING MUSCLE CELLS

• US 20090130066A1
• Filed: 10/31/2007
• Published: 05/21/2009
• Est. Priority Date: 11/06/2000
• Status: Abandoned Application

• Current Assignee: Gerigene Medical Corporation
• Original Assignee: Gerigene Medical Corporation
• Inventors: Soto, Adriana, Kleinsek, Donald
• Application Number:
  US11/981,658
• Publication Number:
  US 20090130066A1
• Time in Patent Office: Days
• US Class Current: 424/93.700
• CPC Class Codes: A61K 35/34 Muscles; Smooth muscle cells; Heart; Cardiac stem cells; Myoblasts; Myocytes; Cardiomyocytes vascular smooth muscle A61K35/44
• CPC Class Codes: A61P 13/00 Drugs for disorders of the urinary system

Abstract

An embodiment of the invention includes methods for the long-term augmentation and/or repair of skin defects (scars, skin laxness, skin thinning, and skin augmentation), cellulite, breast tissue, wounds and burns, urological and gastroesophageal sphincter structures, hernias, periodontal disease and disorders, tendon and ligament tears and baldness, by the injection or direct surgical placement/implantation of autologous cultured cells and/or cultured cell-produced extracellular matrix that is derived from connective tissue, dermis, fascia, lamina propria, stroma, adipose tissue, muscle, tendon, ligament or the hair follicle. The corrective application is done on tissue proximal or within the area of the defect. The method involves retrieving viable cells from the subject, a neonate or human fetus. Alternatively, the corrective application involves the cells placed in a matrix, preferably comprised of autologous extracellular matrix constituents as a three-dimensional structure or as a suspension, prior to placement into a position with respect to the subject'"'"'s defect. In a further embodiment, the preferable autologous extracellular matrix constituents are collected from culture and placed in a position with respect to the subjects defect.

Claims

1. A method for repair or augmentation of a sphincter in a subject comprising:

introducing a composition comprising an enriched population of muscle cells at or near the sphincter in an amount effective to repair or augment the sphincter.

2. The method of claim 1, wherein the muscle cells are autologous to the subject.

3. The method of claim 1, wherein the subject is a human.

4. The method of claim 1, wherein the composition is placed into the tissue by a method selected from the group consisting of injection, engraftment, engraftment by threading, and direct placement.

5. The method of claim 1, wherein the muscle cells are chosen from the group consisting of myofibroblasts, smooth muscle cells, skeletal muscle cells, striated muscle cells, and myoblasts.

6. The method of claim 1, wherein the composition is placed in connective tissue of the sphincter, the muscle tissue of a sphincter, or a combination thereof.

7. The method of claim 1 wherein the sphincter is treated for a malfunction that results in, or is caused by, a condition of, incontinence, urinary incontinence, vesicoureteral incontinence, or gastroesophageal reflux.

8. The method of claim 1, wherein the sphincter is treated for a malfunction that results in, or is caused by stress urinary incontinence, female urinary incontinence, mixed urinary incontinence, overflow incontinence, or urge incontinence.

9. The method of claim 1, wherein the composition further comprises at least one member of the group consisting of adipocytes and preadipocytes.

10. The method of claim 1, further comprising enzymatically digesting a tissue sample to start a cell culture to obtain the muscle cells.

11. The method of claim 1, further comprising of at least one step chosen from the group consisting of collecting cell-produced extracellular matrix enzymatically, mechanically or chemically from the culture for inclusion in the composition, storing the in vitro cultured mammalian cells prior to introduction into the treatment site, and freezing the in vitro cultured cells prior to introduction into the treatment site.

12. The method of claim 1, further comprising culturing the mammalian cells in vitro in the presence of at least one member of the group consisting of fibronectin, collagen, crosslinked collagen, human collagen, bovine collagen, porcine collagen, glycosaminoglycans, hyaluronic acid, ground substance, proteoglycan, fibrillin, laminin, elastin, fibrin and fibrinogen.

13. The method of claim 1, further comprising passaging the cultured muscle cells in vitro with autologous serum.

14. The method of claim 1, wherein the composition further comprises autologous serum.

15. The method of claim 1, wherein the composition placed into the tissue further comprises extracellular matrix isolated from extracellular matrix materials produced by cells from the in vitro culture of the cells.

16. The method of claim 1, wherein the composition further comprises, prior to combination with cells, at least one member of the group consisting of fibronectin, collagen, crosslinked collagen, human collagen, bovine collagen, porcine collagen, glycosaminoglycans, hyaluronic acid, ground substance, proteoglycan, fibrillin, laminin, elastin, fibrin, fibrinogen and other similar extracellular matrix.

17. The method of claim 1, wherein the composition further comprises at least one member of the exogenous tissue growth factor group consisting of PDGF, TGF-beta, FGF, EGF, IGF-I and IGF-II.

18. The method of claim 1, wherein the composition further comprises at least one member of the group consisting of non-degradable and biologic-tolerant synthetic prosthesis materials, cellular mesh, dextranomer microspheres, polylactic acids, prosthetic mesh, prosthetic plug, cellulose, granules, sheets, creams, foam, pectin, cloth, biodegradable microspheres, hydrogel, hydrocolloid, gauze, polyurethane, charcoal, hydrophobic foam, hydrophilic foam, starch, absorptive powders, pastes, nylon meshes, solid polymer particles, polypropylene mesh, polyester mesh, gelatin, hydroxyapatite, polyglycolic acid, acellular mesh, biodegradable materials, biodegradable polymer, alginate, cordal granules, gel, colloidal particles, hydroactives, polymer, suture, copolymer films, and biocompatible fillers.

19. The method of claim 1 wherein the composition further comprises undifferentiated mesenchymal cells.

20. The method of claim 1 wherein the composition further comprises fibroblasts.

21. A composition for repairing or augmenting a sphincter malfunction defect proximal or within the defect, the composition comprising in vitro cultured mammalian muscle cells.