Evidence that miR-146a attenuates aging- and trauma-induced osteoarthritis by inhibiting Notch1, IL-6, and IL-1 mediated catabolism.
Evidence that miR-146a attenuates aging- and trauma-induced osteoarthritis by inhibiting Notch1, IL-6, and IL-1 mediated catabolism.
复制标题
有证据表明 miR-146a 通过抑制 Notch1、IL-6 和 IL-1 介导的分解代谢来减轻衰老和创伤引起的骨关节炎
DOI:
10.1111/acel.12752
复制
发表时间:
2018-06
期刊:
影响因子:
7.8
通讯作者:
Chen Q
中科院分区:
文献类型:
--
作者:
Guan YJ;Li J;Yang X;Du S;Ding J;Gao Y;Zhang Y;Yang K;Chen Q
Primary osteoarthritis (OA) is associated with aging, while post‐traumatic OA (PTOA) is associated with mechanical injury and inflammation. It is not clear whether the two types of osteoarthritis share common mechanisms. We found that miR‐146a, a microRNA‐associated with inflammation, is activated by cyclic load in the physiological range but suppressed by mechanical overload in human articular chondrocytes. Furthermore, miR‐146a expression is decreased in the OA lesions of human articular cartilage. To understand the role of miR‐146a in osteoarthritis, we systemically characterized mice in which miR‐146a is either deficient in whole body or overexpressed in chondrogenic cells specifically. miR‐146a‐deficient mice develop early onset of OA characterized by cartilage degeneration, synovitis, and osteophytes. Conversely, miR‐146a chondrogenic overexpressing mice are resistant to aging‐associated OA. Loss of miR‐146a exacerbates articular cartilage degeneration during PTOA, while chondrogenic overexpression of miR‐146a inhibits PTOA. Thus, miR‐146a inhibits both OA and PTOA in mice, suggesting a common protective mechanism initiated by miR‐146a. miR‐146a suppresses IL‐1β of catabolic factors, and we provide evidence that miR‐146a directly inhibits Notch1 expression. Therefore, such inhibition of Notch1 may explain suppression of inflammatory mediators by miR‐146a. Chondrogenic overexpression of miR‐146a or intra‐articular administration of a Notch1 inhibitor alleviates IL‐1β‐induced catabolism and rescues joint degeneration in miR‐146a‐deficient mice, suggesting that miR‐146a is sufficient to protect OA pathogenesis by inhibiting Notch signaling in the joint. Thus, miR‐146a may be used to counter both aging‐associated OA and mechanical injury‐/inflammation‐induced PTOA.
登录
查看更多内容
影响因子:
4.8
作者:
Guan, Yingjie;Yang, Xu;Chen, Qian
通讯作者:
Chen, Qian
影响因子:
4.6
作者:
Chu M;Rong J;Wang Y;Zhu L;Xing B;Tao Y;Zhuang X;Zhao Y;Jiang L
通讯作者:
Jiang L
影响因子:
3.5
作者:
Gu SX;Li X;Hamilton JL;Chee A;Kc R;Chen D;An HS;Kim JS;Oh CD;Ma YZ;van Wijnen AJ;Im HJ
通讯作者:
Im HJ
DOI:
10.1146/annurev-pathol-121808-102144
发表时间:
2010
期刊:
Annual review of pathology
影响因子:
--
作者:
Coppé JP;Desprez PY;Krtolica A;Campisi J
通讯作者:
Campisi J
影响因子:
7
作者:
Botter, S. M.;Glasson, S. S.;van Osch, G. J. V. M.
通讯作者:
van Osch, G. J. V. M.