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Strategies to minimize hypertrophy in cartilage engineering and regeneration

Strategies to minimize hypertrophy in cartilage engineering and regeneration

Song Chen
Peiliang Fu
Ruijun Cong
HaiShan Wu
Ming Pei
Genes & Diseases第2卷, 第1期pp.76-95纸质出版 2015-03-01在线发表 2015-01-09
116400

Due to a blood supply shortage, articular cartilage has a limited capacity for selfhealing once damaged. Articular chondrocytes, cartilage progenitor cells, embryonic stem cells, and mesenchymal stem cells are candidate cells for cartilage regeneration. Significant current attention is paid to improving chondrogenic differentiation capacity; unfortunately, the potential chondrogenic hypertrophy of differentiated cells is largely overlooked. Consequently, the engineered tissue is actually a transient cartilage rather than a permanent one. The development of hypertrophic cartilage ends with the onset of endochondral bone formation which has inferior mechanical properties. In this review, current strategies for inhibition of chondrogenic hypertrophy are comprehensively summarized; the impact of cell source options is discussed; and potential mechanisms underlying these strategies are also categorized. This paper aims to provide guidelines for the prevention of hypertrophy in the regeneration of cartilage tissue. This knowledge may also facilitate the retardation of osteophytes in the treatment of osteoarthritis.

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Adult stem cellCartilage regenerationCartilage repairCartilage tissue engineeringChondrogenesisHypertrophy