软骨细胞中提取RNA 骨关节炎软骨细胞衰老研究

2011/11/02   下载量: 3

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Replicative senescence occurs when normal somatic cells stop dividing. Senescent cells remain viable, but show alterations in phenotype, e.g. altered expression of matrix metalloproteinases ( MMPs ); these enzymes are known to be involved in cartilage destruction. It is assumed that cells deplete their replicative potential during aging, and age is a major risk factor for osteoarthritis (OA). Therefore, we hypothesized that chondrocytes in aging or diseased cartilage become senescent with associated phenotypic changes contributing to development or progression of OA.

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