期刊
TISSUE ENGINEERING PART B-REVIEWS
卷 19, 期 3, 页码 209-220出版社
MARY ANN LIEBERT, INC
DOI: 10.1089/ten.teb.2012.0252
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资金
- National Institutes of Health [AR007505, AR063194, DE022376, AR061265]
- Department of Defense [OR110196]
- AO Foundation
- Ohio Department of Development [09-071]
- Ellison Medical Foundation
To address the significant clinical need for tissue-engineered therapies for the repair and regeneration of articular cartilage, many systems have recently been developed using bioactive polymer microspheres as regulators of the chondrogenic microenvironment within high-density cell cultures. In this review, we highlight various densely cellular systems utilizing polymer microspheres as three-dimensional (3D) structural elements within developing engineered cartilage tissue, carriers for cell expansion and delivery, vehicles for spatiotemporally controlled growth factor delivery, and directors of cell behavior via regulation of cell-biomaterial interactions. The diverse systems described herein represent a shift from the more traditional tissue engineering approach of combining cells and growth factors within a biomaterial scaffold, to the design of modular systems that rely on the assembly of cells and bioactive polymer microspheres as building blocks to guide the creation of articular cartilage. Cell-based assembly of 3D microsphere-incorporated structures represents a promising avenue for the future of tissue engineering.
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