Triggering apoptosis by oroxylin A through caspase-8 activation and p62/SQSTM1 proteolysis
Triggering apoptosis by oroxylin A through caspase-8 activation and p62/SQSTM1 proteolysis
复制标题
Oroxylin A 通过 caspase-8 激活和 p62/SQSTM1 蛋白水解触发细胞凋亡
DOI:
10.1016/j.redox.2019.101392
复制
发表时间:
2019-11
期刊:
影响因子:
11.4
通讯作者:
Lu Na
中科院分区:
文献类型:
--
作者:
Zhao Yue;Zhu Qin;Bu Xiumin;Zhou Yihui;Bai Dongsheng;Guo Qinglong;Gao Yuan;Lu Na
Emerging evidence suggests that oroxylin A exhibits antitumor effects by inducing cell apoptosis. However, the involved molecular mechanisms have not been elucidated. Here we report that the apoptosis induced by oroxylin A was dependent on p62-mediated activation of caspase-8 in hepatocellular carcinoma cells. Furthermore, oroxylin A also caused p62/SQSTM1 proteolysis at Asp329 by activating caspase-8. Further studies confirm that mutation in p62 (D329H and D329G) was resistant to oroxylin A-mediated p62 cleavage and apoptosis. Due to the absence of the KIR domain that interacts with Keap1, the cleaved p62 reduced the stability of Nrf2, thereby causing oxidative stress and increasing ROS levels.In vivo, p62 similarly contributed to oroxylin A-exerted antitumor effect in xenograft model inoculated SMMC-7721 tumor. In conclusion, our findings indicated that oroxylin A triggered apoptosis through caspase-8 activation and p62/SQSTM1 proteolysis.
登录
查看更多内容
DOI:
10.1002/hep.28251
发表时间:
2016-01
期刊:
Hepatology (Baltimore, Md.)
影响因子:
--
作者:
Sun X;Ou Z;Chen R;Niu X;Chen D;Kang R;Tang D
通讯作者:
Tang D
影响因子:
64.5
作者:
Moscat, Jorge;Karin, Michael;Diaz-Meco, Maria T.
通讯作者:
Diaz-Meco, Maria T.
影响因子:
4.6
作者:
Liau, Pei Ru;Wu, Ming Shun;Lee, Ching Kuo
通讯作者:
Lee, Ching Kuo
影响因子:
16
作者:
Duran A;Amanchy R;Linares JF;Joshi J;Abu-Baker S;Porollo A;Hansen M;Moscat J;Diaz-Meco MT
通讯作者:
Diaz-Meco MT
影响因子:
3.9
作者:
R. Zeng;Yi-bo Zhang;Yu Fan;Ge Wu
通讯作者:
R. Zeng;Yi-bo Zhang;Yu Fan;Ge Wu