BMC Biol:综合应激反应通过影响翻译来调节BMP信号传导

2018-04-13 MedSci MedSci原创

发育通路必须对环境做出响应。eIF2α的磷酸化使得一系列压力感应激酶可以触发综合应激反应(ISR),具有促生存和发育的作用。骨形态发生蛋白(BMPs)调节从昆虫到哺乳动物的生物体中的多个发育过程。 本研究中,研究人员在果蝇中发现,GCN2通过直接影响翻译和间接通过转录因子crc(dATF4)来拮抗BMP信号传导。组成型活性GCN2的表达或eIF2α磷酸酶dPPP1R15的丧失中断了果蝇中BM

发育通路必须对环境做出响应。eIF2α的磷酸化使得一系列压力感应激酶可以触发综合应激反应(ISR),具有促生存和发育的作用。骨形态发生蛋白(BMPs)调节从昆虫到哺乳动物的生物体中的多个发育过程。

本研究中,研究人员在果蝇中发现,GCN2通过直接影响翻译和间接通过转录因子crc(dATF4)来拮抗BMP信号传导。组成型活性GCN2的表达或eIF2α磷酸酶dPPP1R15的丧失中断了果蝇中BMP的信号传导。在细胞中,GCN2抑制翻译阻断下游BMP信号。此外,crc靶标d4E-BP的丧失增加体外BMP信号传导并拯救体内组织发育。

综上所述,该研究结果确定了ISR在发育过程中调节BMP信号的新机制。

原始出处:

Elke Malzer, Caia S. Dominicus, et al., The integrated stress response regulates BMP signalling through effects on translation. BMC Biol. 2018; 16: 34.doi:  10.1186/s12915-018-0503-x

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    2019-02-06 sunylz
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    2018-11-05 HNYYM
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