Biomaterial derived from vertebrate liver tissue
First Claim
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1. A composition comprising liver basement membrane of a warm-blooded vertebrate, wherein the liver basement membrane is substantially free of cells of said warm-blooded vertebrate and the liver basement membrane is retained in its natural three dimensional shape.
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Abstract
A tissue graft composition comprising liver basement membrane is described. The graft composition can be implanted to replace or induce the repair of damaged or diseased tissues.
201 Citations
17 Claims
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1. A composition comprising liver basement membrane of a warm-blooded vertebrate, wherein the liver basement membrane is substantially free of cells of said warm-blooded vertebrate and the liver basement membrane is retained in its natural three dimensional shape.
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2. A composition prepared from liver tissue of a warm-blooded vertebrate, wherein said composition is useful as a non-immunogenic tissue graft capable of inducing endogenous tissue growth when implanted in warm-blooded vertebrates, said composition comprising an extracellular matrix consisting essentially of liver basement membrane retained in its natural three dimensional shape and devoid of endogenous cells associated with said liver tissue.
- 3. A method for inducing the formation of endogenous connective tissue at a site in need of endogenous tissue growth in a warm blooded vertebrate, said method comprising implanting a graft composition comprising an extracellular matrix consisting essentially of basement membrane of liver tissue of a warm-blooded vertebrate in an amount effective to induce endogenous tissue growth at the site the graft composition is administered, said liver basement membrane being devoid of endogenous cells associated with said liver tissue.
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6. A method for preparing a tissue graft composition comprising extracellular matrix components of vertebrate liver tissue, said method comprising the steps of
treating warm-blooded vertebrate liver tissue having both cellular and extracellular components with a cell dissociation solution for a period of time sufficient to release the cellular components of the liver tissue from the extracellular matrix components without substantial disruption of the extracellular matrix components, and separating the extracellular matrix components from the cellular components wherein said extracellular components are used to form the tissue graft composition.
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12. A liver tissue derived composition for supporting the growth of a cell population, said composition comprising isolated liver basement membrane retained in its natural three dimensional shape and devoid of source liver tissue endogenous cells;
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added nutrients to support the growth of said cell population in vitro.
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13. A liver tissue derived composition for supporting the growth of a cell population, said composition comprising
culture-ware coated with a matrix consisting essentially of liver basement membrane devoid of source liver tissue endogenous cells.
Specification