A thrombospondin-dependent pathway for a protective ER stress response.
A thrombospondin-dependent pathway for a protective ER stress response.
复制标题
DOI:
10.1016/j.cell.2012.03.050
复制
发表时间:
2012-06-08
期刊:
影响因子:
64.5
通讯作者:
Molkentin JD
中科院分区:
文献类型:
--
作者:
Lynch JM;Maillet M;Vanhoutte D;Schloemer A;Sargent MA;Blair NS;Lynch KA;Okada T;Aronow BJ;Osinska H;Prywes R;Lorenz JN;Mori K;Lawler J;Robbins J;Molkentin JD
Thrombospondin (Thbs) proteins are induced in sites of tissue damage or active remodeling. The endoplasmic reticulum (ER) stress response is also prominently induced with disease where it regulates protein production and resolution of misfolded proteins. Here we describe a novel function for Thbs’ as ER resident effectors of an adaptive ER stress response. Thbs4 cardiac-specific transgenic mice were protected from myocardial injury while Thbs4−/− mice were sensitized to cardiac maladaptation. Thbs induction produced a unique profile of adaptive ER stress response factors and expansion of the ER and downstream vesicles. The type-3 repeat domain in Thbs’ bind the ER luminal domain of activating transcription factor 6α (Atf6α) to promote its nuclear shuttling. Thbs4−/−mice failed to show activation of Atf6α and other ER stress response factors with injury, and Thbs4-mediated protection was lost when Atf6α was deleted. Hence, Thbs’ can function inside the cell during disease/remodeling to augment ER function and protect through a mechanism involving regulation of Atf6α.
登录
查看更多内容
影响因子:
6.9
作者:
Hecht, JT;Hayes, E;Duke, PJ
通讯作者:
Duke, PJ
影响因子:
5
作者:
Gabrielsen, Anders;Lawler, Patrick R.;Hansson, Goran K.
通讯作者:
Hansson, Goran K.
影响因子:
1.5
作者:
Adachi, Yusuke;Yamamoto, Keisuke;Mori, Kazutoshi
通讯作者:
Mori, Kazutoshi
影响因子:
5.6
作者:
Beskow, Anne;Grimberg, Kristian Bjork;Young, Patrick
通讯作者:
Young, Patrick
影响因子:
3.5
作者:
Délot, E;King, LM;Cohn, DH
通讯作者:
Cohn, DH