Modulation of the Nur77-Bcl-2 apoptotic pathway by p38α MAPK.
Modulation of the Nur77-Bcl-2 apoptotic pathway by p38α MAPK.
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p38 α MAPK 对 Nur77-Bcl-2 凋亡途径的调节
DOI:
10.18632/oncotarget.19227
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发表时间:
2017-09-19
期刊:
影响因子:
--
通讯作者:
Zhang XK
中科院分区:
文献类型:
--
作者:
Liu J;Wang GH;Duan YH;Dai Y;Bao Y;Hu M;Zhou YQ;Li M;Jiang F;Zhou H;Yao XS;Zhang XK
Orphan nuclear receptor Nur77 promotes apoptosis by targeting mitochondria through interaction with Bcl-2, an event that converts Bcl-2 from a survival to killer. However, how the Nur77-Bcl-2 apoptotic pathway is regulated remains largely unknown. In this study, we examined the regulation of the Nur77-Bcl-2 pathway by CCE9, a xanthone compound. Our results demonstrated that the apoptotic effect of CCE9 depended on its induction of Nur77 expression, cytoplasmic localization, and mitochondrial targeting. The activation of the Nur77-Bcl-2 pathway by CCE9 was associated with its activation of p38α MAPK. Inhibition of p38α MAPK activation by knocking down or knocking out p38α MAPK impaired the effect of CCE9 on inducing apoptosis and the expression and cytoplasmic localization of Nur77. In addition, CCE9 activation of p38α MAPK resulted in Bcl-2 phosphorylation and Bcl-2 interaction with Nur77, whereas inhibition of p38α MAPK activation or expression suppressed the interaction. Moreover, mutating Ser87 and Thr56 in the loop of Bcl-2, which are known to be phosphorylated by p38α MAPK, impaired the ability Bcl-2 to interact with Nur77. Together, our results reveal a profound role of p38α MAPK in regulating the Nur77-Bcl-2 apoptotic pathway through its modulation of Nur77 expression, Bcl-2 phosphorylation, and their interaction.
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影响因子:
11.2
作者:
Liu J;Zhou W;Li SS;Sun Z;Lin B;Lang YY;He JY;Cao X;Yan T;Wang L;Lu J;Han YH;Cao Y;Zhang XK;Zeng JZ
通讯作者:
Zeng JZ
影响因子:
4.1
作者:
Darragh, J;Soloaga, A;Arthur, JSC
通讯作者:
Arthur, JSC
影响因子:
8
作者:
Holmes, WF;Soprano, DR;Soprano, KJ
通讯作者:
Soprano, KJ
影响因子:
4
作者:
Maddika, S;Booy, EP;Los, M
通讯作者:
Los, M
影响因子:
4.3
作者:
Hui, Lijian;Bakiri, Latifa;Wagner, Erwin F.
通讯作者:
Wagner, Erwin F.