Polymer-ceramic-hydrogel composite scaffold for osteochondral repair
First Claim
1. An apparatus for osteochondral tissue engineering, wherein said apparatus comprises regions of varying matrices which provide a functional interface between multiple tissue types, said regions comprising:
- (a) a first region comprising a hydrogel;
(b) a second region adjoining the first region; and
(c) a third region adjoining the second region and comprising a porous scaffold.
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Abstract
This invention pertains to materials and methods relating to the biological fixation of one tissue type to another different tissue type, i.e., the fixation of cartilage to bone. A scaffold apparatus for osteochondral tissue engineering is described. The apparatus comprises regions of varying matrices which provide a functional interface between multiple tissue types. Further, a method for preparing the scaffold apparatus is provided. Methods for treating osteochondral tissue injury and cartilage degeneration using the scaffold apparatus are also described. In addition, a method for evaluating cell-mediated and scaffold-related parameters of development and maintenance of multiple tissue zones in vitro is described.
115 Citations
72 Claims
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1. An apparatus for osteochondral tissue engineering, wherein said apparatus comprises regions of varying matrices which provide a functional interface between multiple tissue types, said regions comprising:
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(a) a first region comprising a hydrogel;
(b) a second region adjoining the first region; and
(c) a third region adjoining the second region and comprising a porous scaffold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A method for preparing an apparatus for osteochondral tissue engineering, said method comprising the steps of:
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(a) using a mold to form an apparatus comprising a first region comprising hydrogel, a second region adjoining said first region, and a third region adjoining said second region and comprising a porous scaffold;
(b) seeding said first region with one or more cells for chondrogenesis;
(c) seeding said third region with one or more cells for osteogenesis; and
(d) maintaining the apparatus comprising the first region seeded with the cells for chondrogenesis and the third region seeded with the cells for osteogenesis in an environment supporting migration of at least some of the cells for chondrogenesis into the second region and migration of at least some of the cells for osteogenesis into the second region. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
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Specification