Dissection of the Role of VIMP in Endoplasmic Reticulum-Associated Degradation of CFTRΔF508.
Dissection of the Role of VIMP in Endoplasmic Reticulum-Associated Degradation of CFTRΔF508.
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VIMP 在内质网相关 CFTRÎF508 降解中作用的剖析
DOI:
10.1038/s41598-018-23284-8
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发表时间:
2018-03-19
影响因子:
4.6
通讯作者:
Sun F
中科院分区:
文献类型:
--
作者:
Hou X;Wei H;Rajagopalan C;Jiang H;Wu Q;Zaman K;Xie Y;Sun F
Endoplasmic reticulum (ER)-associated protein degradation (ERAD) is an important quality control mechanism that eliminates misfolded proteins from the ER. The Derlin-1/VCP/VIMP protein complex plays an essential role in ERAD. Although the roles of Derlin-1 and VCP are relatively clear, the functional activity of VIMP in ERAD remains to be understood. Here we investigate the role of VIMP in the degradation of CFTRΔF508, a cystic fibrosis transmembrane conductance regulator (CFTR) mutant known to be a substrate of ERAD. Overexpression of VIMP markedly enhances the degradation of CFTRΔF508, whereas knockdown of VIMP increases its half-life. We demonstrate that VIMP is associated with CFTRΔF508 and the RNF5 E3 ubiquitin ligase (also known as RMA1). Thus, VIMP not only forms a complex with Derlin-1 and VCP, but may also participate in recruiting substrates and E3 ubiquitin ligases. We further show that blocking CFTRΔF508 degradation by knockdown of VIMP substantially augments the effect of VX809, a drug that allows a fraction of CFTRΔF508 to fold properly and mobilize from ER to cell surface for normal functioning. This study provides insight into the role of VIMP in ERAD and presents a potential target for the treatment of cystic fibrosis patients carrying the CFTRΔF508 mutation.
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影响因子:
64.5
作者:
Wang, Bing;Heath-Engel, Hannah;Shore, Gordon C.
通讯作者:
Shore, Gordon C.
DOI:
10.1074/jbc.m116.751537
发表时间:
2017-03-03
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Meng X;Wang Y;Wang X;Wrennall JA;Rimington TL;Li H;Cai Z;Ford RC;Sheppard DN
通讯作者:
Sheppard DN
DOI:
10.1042/bcj20160783
发表时间:
2017-08-17
期刊:
The Biochemical journal
影响因子:
--
作者:
Stach L;Freemont PS
通讯作者:
Freemont PS
影响因子:
64.8
作者:
Ye, YH;Shibata, Y;Rapoport, TA
通讯作者:
Rapoport, TA
影响因子:
4.8
作者:
Ernst, Wayne L.;Shome, Kuntala;Aridor, Meir
通讯作者:
Aridor, Meir