An initial phase of JNK activation inhibits cell death early in the endoplasmic reticulum stress response.
An initial phase of JNK activation inhibits cell death early in the endoplasmic reticulum stress response.
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DOI:
10.1242/jcs.179127
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发表时间:
2016-06-15
影响因子:
4
通讯作者:
Schröder M
中科院分区:
文献类型:
--
作者:
Brown M;Strudwick N;Suwara M;Sutcliffe LK;Mihai AD;Ali AA;Watson JN;Schröder M
Accumulation of unfolded proteins in the endoplasmic reticulum (ER) activates the unfolded protein response (UPR). In mammalian cells, UPR signals generated by several ER membrane resident proteins, including the bifunctional protein kinase endoribonuclease IRE1α, control cell survival and the decision to execute apoptosis. Processing of XBP1 mRNA by the RNase domain of IRE1α promotes survival of ER stress, while activation of the mitogen-activated protein kinase JNK by IRE1α late in the ER stress response promotes apoptosis. Here we show that activation of JNK in the ER stress response precedes activation of XBP1. This activation of JNK is dependent on IRE1α and TRAF2 and coincides with JNK-dependent induction of expression of several antiapoptotic genes, including cIAP1, cIAP2, XIAP, and BIRC6. ER-stressed jnk1-/- jnk2-/- mouse embryonic fibroblasts (MEFs) display more pronounced mitochondrial permeability transition and increased caspase 3/7 activity compared to wild type MEFs. Caspase 3/7 activity is also elevated in ER-stressed ciap1-/- ciap2-/-, and xiap-/- MEFs. These observations suggest that JNK-dependent transcriptional induction of several inhibitors of apoptosis contributes to inhibiting apoptosis early in the ER stress response.
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DOI:
10.1083/jcb.200904158
发表时间:
2009-12-28
期刊:
The Journal of cell biology
影响因子:
--
作者:
Geserick P;Hupe M;Moulin M;Wong WW;Feoktistova M;Kellert B;Gollnick H;Silke J;Leverkus M
通讯作者:
Leverkus M
影响因子:
2.7
作者:
Collins, Tony J.
通讯作者:
Collins, Tony J.
影响因子:
16.2
作者:
ANKARCRONA, M;DYPBUKT, JM;NICOTERA, P
通讯作者:
NICOTERA, P
影响因子:
64.8
作者:
Calfon, M;Zeng, HQ;Ron, D
通讯作者:
Ron, D
影响因子:
5.3
作者:
Bradham, CA;Qian, T;Lemasters, JJ
通讯作者:
Lemasters, JJ