Osteopontin Promotes Expression of Matrix Metalloproteinase 13 through NF-κB Signaling in Osteoarthritis.

Osteopontin Promotes Expression of Matrix Metalloproteinase 13 through NF-κB Signaling in Osteoarthritis.
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骨桥蛋白通过 NF-κB 信号传导促进骨关节炎中基质金属蛋白酶 13 的表达

DOI:
10.1155/2016/6345656
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发表时间:
2016
影响因子:
--
通讯作者:
Lei G
Lei G
中科院分区:
生物学3区
文献类型:
--
作者:
Li Y;Jiang W;Wang H;Deng Z;Zeng C;Tu M;Li L;Xiao W;Gao S;Luo W;Lei G

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骨桥蛋白(OPN)与骨关节炎(OA)的严重程度和进展有关,但其在OA发病机制中的作用机制尚不清楚。本研究发现OA患者骨桥蛋白和基质金属蛋白酶13(MMP 13)的丰度较高。在软骨细胞中,我们发现OPN通过增加p65和磷酸化p65的丰度以及p65蛋白从细胞质向细胞核的移位来促进MMP 13的产生和NF-κB通路的激活。值得注意的是,通过抑制剂抑制NF-κB途径抑制了OPN处理诱导的MMP 13的产生。结论:OPN通过激活NF-κB通路诱导MMP 13的产生。
Osteopontin (OPN) is associated with the severity and progression of osteoarthritis (OA); however, the mechanism of OPN in the pathogenesis of OA is unknown. In this study, we found that OA patients had higher abundance of OPN and matrix metalloproteinase 13 (MMP13). In chondrocytes, we showed that OPN promoted the production of MMP13 and activation of NF-κB pathway by increasing the abundance of p65 and phosphorylated p65 and translocation of p65 protein from cytoplasm to nucleus. Notably, inhibition of NF-κB pathway by inhibitor suppressed the production of MMP13 induced by OPN treatment. In conclusion, OPN induces production of MMP13 through activation of NF-κB pathway.
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