Ubiquitin-like protein FAT10 suppresses SIRT1-mediated autophagy to protect against ischemic myocardial injury.
Ubiquitin-like protein FAT10 suppresses SIRT1-mediated autophagy to protect against ischemic myocardial injury.
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泛素样蛋白 FAT10 抑制 SIRT1 介导的自噬以预防缺血性心肌损伤
DOI:
10.1016/j.yjmcc.2020.11.007
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发表时间:
2020-12
影响因子:
5
通讯作者:
Hong Kui
中科院分区:
文献类型:
--
作者:
Wan Rong;Yuan Ping;Guo Linjuan;Shao Jianghua;Liu Xiao;Lai Wei;Kong Qilin;Chen Leifeng;Ge Jin;Xu Zhenyan;Xie Jinyan;Shen Yang;Hu Jianping;Zhou Qiongqiong;Yu Jianhua;Jiang Zhenhong;Jiang Xinghua;Hong Kui
Autophagy plays a deleterious role in ischemic myocardial injury. The deacetylase SIRT1 is a well-established regulator of autophagy that can be modified by the ubiquitin-like protein SUMO1. Our previous work demonstrated that another ubiquitin-like protein, FAT10, exerts cardioprotective effects against myocardial ischemia by stabilizing the caveolin-3 protein; however, the effects of FAT10 on autophagy through SIRT1 are unclear. Here, we constructed aFat10-knockout rat model to evaluate the role of FAT10 in autophagy.In vivoandin vitroassays confirmed that FAT10 suppressed autophagy to protect the heart from ischemic myocardial injury. Mechanistically, FAT10 was mainly involved in the regulation of the autophagosome formation process. FAT10 affected autophagy through modulating SIRT1 degradation, which resulted in reduced SIRT1 nuclear translocation and inhibited SIRT1 activityviaits C-terminal glycine residues. Notably, FAT10 competed with SUMO1 at the K734 modification site of SIRT1, which further reduced LC3 deacetylation and suppressed autophagy. Our findings suggest that FAT10 inhibits autophagy by antagonizing SIRT1 SUMOylation to protect the heart from ischemic myocardial injury. This is a novel mechanism through which FAT10 regulates autophagy as a cardiac protector.
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影响因子:
37.8
作者:
Lai L;Yan L;Gao S;Hu CL;Ge H;Davidow A;Park M;Bravo C;Iwatsubo K;Ishikawa Y;Auwerx J;Sinclair DA;Vatner SF;Vatner DE
通讯作者:
Vatner DE
影响因子:
--
作者:
Dong D;Jiang W;Lei J;Chen L;Liu X;Ge J;Che B;Xi X;Shao J
通讯作者:
Shao J
DOI:
--
发表时间:
1948
期刊:
Federation proceedings
影响因子:
--
作者:
E. F. Van Maanen
通讯作者:
E. F. Van Maanen
DOI:
10.1016/j.bbadis.2014.05.012
发表时间:
2015-02
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Jie Xu;Xinghua Qin;Xiaoqing Cai;Lu Yang;Yuan Xing;Jun Li;Li-hua Zhang;Ying Tang;
通讯作者:
Jie Xu;Xinghua Qin;Xiaoqing Cai;Lu Yang;Yuan Xing;Jun Li;Li-hua Zhang;Ying Tang;
影响因子:
3.4
作者:
Ren, Qiannan;Hu, Zhiying;Fang, Marong
通讯作者:
Fang, Marong