RNA-binding protein HuR mediates cytoprotection through stimulation of XIAP translation.
RNA-binding protein HuR mediates cytoprotection through stimulation of XIAP translation.
复制标题
DOI:
10.1038/onc.2010.527
复制
发表时间:
2011-03-24
期刊:
影响因子:
8
通讯作者:
Holcik, M.
中科院分区:
文献类型:
--
作者:
Durie, D.;Lewis, S. M.;Liwak, U.;Kisilewicz, M.;Gorospe, M.;Holcik, M.
Expression of the intrinsic cellular caspase inhibitor XIAP is regulated primarily at the level of protein synthesis. The 5′ untranslated region harbours an Internal Ribosome Entry Site (IRES) motif that supports cap-independent translation of XIAP mRNA during conditions of cellular stress. In this study, we show that the RNA-binding protein HuR, which is known to orchestrate an antiapoptotic cellular program, stimulates translation of XIAP mRNA through XIAP IRES. We further show that HuR binds to XIAP IRES in vitro and in vivo, and stimulates recruitment of the XIAP mRNA into polysomes. Importantly, protection from the apoptosis-inducing agent etoposide by overexpression of HuR requires the presence of XIAP, suggesting that HuR-mediated cytoprotection is partially executed through enhanced XIAP translation. Our data suggest that XIAP belongs to the HuR-regulated RNA operon of antiapoptotic genes, which, along with Bcl-2, Mcl-1 and ProTα, contributes to the regulation of cell survival.
登录
查看更多内容
影响因子:
50.3
作者:
Gu L;Zhu N;Zhang H;Durden DL;Feng Y;Zhou M
通讯作者:
Zhou M
影响因子:
11.4
作者:
Lal, A;Kawai, T;Gorospe, M
通讯作者:
Gorospe, M
影响因子:
5.3
作者:
Galban, Stefanie;Kuwano, Yuki;Gorospe, Myriam
通讯作者:
Gorospe, Myriam
影响因子:
5.3
作者:
Holcík, M;Gordon, BW;Korneluk, RG
通讯作者:
Korneluk, RG
影响因子:
4.5
作者:
Holcik, M;Graber, T;Baird, S
通讯作者:
Baird, S