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Chen, Jian; Xie, Jun-Jun; Jin, Meng-Yun; Gu, Yun-Tao; Wu, Cong-Cong; Guo, Wei-Jun; Yan, Ying-Zhao; Zhang, Zeng-Jie; Wang, Jian-Le; Zhang, Xiao-Lei; Lin, Yan; Sun, Jia-Li; Zhu, Guang-Hui; Wang, Xiang-Yang; Wu, Yao-Sen
Cell death & disease, 01/2018, Letnik: 9, Številka: 2Journal Article
Treatment of intervertebral disc degeneration (IDD) seeks to prevent senescence and death of nucleus pulposus (NP) cells. Previous studies have shown that sirt6 exerts potent anti-senescent and anti-apoptotic effects in models of age-related degenerative disease. However, it is not known whether sirt6 protects against IDD. Here, we explored whether sirt6 influenced IDD. The sirt6 level was reduced in senescent human NP cells. Sirt6 overexpression protected against apoptosis and both replicative and stress-induced premature senescence. Sirt6 also activated NP cell autophagy both in vivo and in vitro. 3-methyladenine (3-MA) and chloroquine (CQ)-mediated inhibition of autophagy partially reversed the anti-senescent and anti-apoptotic effects of sirt6, which regulated the expression of degeneration-associated proteins. In vivo, sirt6 overexpression attenuated IDD. Together, the data showed that sirt6 attenuated cell senescence, and reduced apoptosis, by triggering autophagy that ultimately ameliorated IDD. Thus, sirt6 may be a novel therapeutic target for IDD treatment.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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