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Regulation of ER stress response by insulin signaling

Regulation of ER stress response by insulin signaling
通过胰岛素信号调节内质网应激反应
批准号:
22590553
负责人:
INAGEDA Kiyoshi
金额:
$2.5万
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2010
资助国家:
日本
项目状态:
已结题
起止时间:
2010 至 2012

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英文摘要
The effect of insulin on endoplasmic reticulum (ER) stress was investigated. Insulin protected cell death induced by ER stress and increased glucose-regulated protein 78 (GRP78) mRNA and protein levels. Insulin also significantly increased activating transcription factor-4 (ATF4) protein level through PI-3 kinase/AKT pathway. The increase of ATF4 protein by insulin was not due to transcriptional or transational up-regulation but to a post-translational mechanism. Knockdown of ATF4 by siRNA significantly inhibited GRP78 induction by insulin. These results indicate that insulin modulated ER stress-induced GRP78 expression occurs via ATF4 up-regulation.
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