ATR/Chk1 signaling induces autophagy through sumoylated RhoB-mediated lysosomal translocation of TSC2 after DNA damage.
ATR/Chk1 signaling induces autophagy through sumoylated RhoB-mediated lysosomal translocation of TSC2 after DNA damage.
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DNA 损伤后,ATR/Chk1 信号通过 sumoylated RhoB 介导的 TSC2 溶酶体易位诱导自噬
DOI:
10.1038/s41467-018-06556-9
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发表时间:
2018-10-08
影响因子:
16.6
通讯作者:
Wang HR
中科院分区:
文献类型:
--
作者:
Liu M;Zeng T;Zhang X;Liu C;Wu Z;Yao L;Xie C;Xia H;Lin Q;Xie L;Zhou D;Deng X;Chan HL;Zhao TJ;Wang HR
DNA damage can induce autophagy; however, the underlying mechanism remains largely unknown. Here we report that DNA damage leads to autophagy through ATR/Chk1/RhoB-mediated lysosomal recruitment of TSC complex and subsequent mTORC1 inhibition. DNA damage caused by ultraviolet light (UV) or alkylating agent methyl methanesulphonate (MMS) results in phosphorylation of small GTPase RhoB by Chk1. Phosphorylation of RhoB enhances its interaction with the TSC2, and promotes its sumoylation by PIAS1, which is required for RhoB/TSC complex to translocate to lysosomes. As a result, mTORC1 is inhibited, and autophagy is activated. Knockout of RhoB severely attenuates lysosomal translocation of TSC complex and the DNA damage-induced autophagy. Reintroducing wild-type but not sumoylation-resistant RhoB into RhoB−/− cells restores the onset of autophagy. Hence, our study identifies a molecular mechanism for translocation of TSC complex to lysosomes in response to DNA damage, which depends on ATR/Chk1-mediated RhoB phosphorylation and sumoylation. DNA damage can lead to autophagy. Here the authors reveal a molecular mechanism for ATR/Chk1 signaling-induced autophagy in response to DNA damage, through an ATR/Chk1/RhoB-mediated lysosomal recruitment of TSC complex and subsequent mTORC1 inhibition.
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影响因子:
16
作者:
Kroemer G;Mariño G;Levine B
通讯作者:
Levine B
影响因子:
64.5
作者:
Demetriades C;Doumpas N;Teleman AA
通讯作者:
Teleman AA
影响因子:
6.4
作者:
Kim, Dong-Myung;Chung, Kyung-Sook;Seo, Yeon-Soo
通讯作者:
Seo, Yeon-Soo
DOI:
10.1038/nrm3735
发表时间:
2014-02
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
通讯作者:
--
DOI:
10.1146/annurev-pathol-020712-163918
发表时间:
2013-01-24
期刊:
Annual review of pathology
影响因子:
--
作者:
Murrow L;Debnath J
通讯作者:
Debnath J