TMEM189 negatively regulates the stability of ULK1 protein and cell autophagy.
TMEM189 negatively regulates the stability of ULK1 protein and cell autophagy.
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TMEM189 负向调节 ULK1 蛋白和细胞自噬的稳定性
DOI:
10.1038/s41419-022-04722-y
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发表时间:
2022-04-07
影响因子:
9
通讯作者:
Chen Y
中科院分区:
文献类型:
--
作者:
Yu J;Qu L;Xia Y;Zhang X;Feng J;Duan M;Guo P;Lou Y;Lv P;Lu W;Chen Y
ULK1 is crucial for initiating autophagosome formation and its activity is tightly regulated by post-translational modifications and protein-protein interactions. In the present study, we demonstrate that TMEM189 (Transmembrane protein 189), also known as plasmanylethanolamine desaturase 1 (PEDS1), negatively regulates the proteostasis of ULK1 and autophagy activity. In TMEM189-overexpressed cells, the formation of autophagesome is impaired, while TMEM189 knockdown increases cell autophagy. Further investigation reveals that TMEM189 interacts with and increases the instability of ULK1, as well as decreases its kinase activities. The TMEM189 N-terminal domain is required for the interaction with ULK1. Additionally, TMEM189 overexpression can disrupt the interaction between ULK1 and TRAF6, profoundly impairs K63-linked polyubiquitination of ULK1 and self-association, leading to the decrease of ULK1 stability. Moreover, in vitro and in vivo experiments suggest that TMEM189 deficiency results in the inhibition of tumorigenicity of gastric cancer. Our findings provide a new insight into the molecular regulation of autophagy and laboratory evidence for investigating the physiological and pathological roles of TMEM189.
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DOI:
10.1083/jcb.201605089
发表时间:
2016-12-19
期刊:
The Journal of cell biology
影响因子:
--
作者:
Nazio F;Carinci M;Valacca C;Bielli P;Strappazzon F;Antonioli M;Ciccosanti F;Rodolfo C;Campello S;Fimia GM;Sette C;Bonaldo P;Cecconi F
通讯作者:
Cecconi F
影响因子:
3.8
作者:
Tang, Jun;Deng, Rong;Zhu, Xiao-Feng
通讯作者:
Zhu, Xiao-Feng
影响因子:
--
作者:
Szász AM;Lánczky A;Nagy Á;Förster S;Hark K;Green JE;Boussioutas A;Busuttil R;Szabó A;Győrffy B
通讯作者:
Győrffy B
影响因子:
6.4
作者:
Zachari M;Ganley IG
通讯作者:
Ganley IG
影响因子:
13.3
作者:
Hieke, Nora;Loeffler, Antje S.;Stork, Bjoern
通讯作者:
Stork, Bjoern