Caspases: a molecular switch node in the crosstalk between autophagy and apoptosis.

Caspases: a molecular switch node in the crosstalk between autophagy and apoptosis.
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Caspases:自噬和凋亡串扰中的分子开关节点

DOI:
10.7150/ijbs.9719
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发表时间:
2014
影响因子:
9.2
通讯作者:
Hong Y
Hong Y
中科院分区:
生物学2区
文献类型:
--
作者:
Wu H;Che X;Zheng Q;Wu A;Pan K;Shao A;Wu Q;Zhang J;Hong Y

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自噬和细胞凋亡是有助于维持细胞和组织稳态的两个重要的分解代谢过程。自噬控制细胞内蛋白质聚集体和受损细胞器的周转,而细胞凋亡是将不需要的细胞从生物体中拆除和消除的主要机制。尽管这两条途径之间存在显着差异,但它们在决定细胞命运方面高度相互关联。有趣的是,半胱天冬酶是细胞凋亡的主要驱动因素,在介导自噬和细胞凋亡之间复杂的串扰中发挥着关键作用。促凋亡信号可以汇聚激活半胱天冬酶以执行凋亡细胞死亡。此外,激活的半胱天冬酶可以降解自噬蛋白(即 Beclin-1、Atg5 和 Atg7)以关闭自噬反应。此外,半胱天冬酶可以将促自噬蛋白转化为促凋亡蛋白,从而引发细胞凋亡。很明显,Caspase 在细胞凋亡和自噬中都很重要,因此仍然需要详细破译 Caspase 在这两个过程中的作用,以阐明它们之间的功能关系。在本文中,我们提供了半胱天冬酶在自噬和细胞凋亡之间相互作用的最新概述。我们强调,定义半胱天冬酶在自噬-凋亡串扰中的作用将为在细胞死亡过程中更精确地操纵这两个过程提供一个框架。
Autophagy and apoptosis are two important catabolic processes contributing to the maintenance of cellular and tissue homeostasis. Autophagy controls the turnover of protein aggregates and damaged organelles within cells, while apoptosis is the principal mechanism by which unwanted cells are dismantled and eliminated from organisms. Despite marked differences between these two pathways, they are highly interconnected in determining the fate of cells. Intriguingly, caspases, the primary drivers of apoptotic cell death, play a critical role in mediating the complex crosstalk between autophagy and apoptosis. Pro-apoptotic signals can converge to activate caspases to execute apoptotic cell death. In addition, activated caspases can degrade autophagy proteins (i.e., Beclin-1, Atg5, and Atg7) to shut down the autophagic response. Moreover, caspases can convert pro-autophagic proteins into pro-apoptotic proteints to trigger apoptotic cell death instead. It is clear that caspases are important in both apoptosis and autophagy, thus a detailed deciphering of the role of caspases in these two processes is still required to clarify the functional relationship between them. In this article, we provide a current overview of caspases in its interplay between autophagy and apoptosis. We emphasized that defining the role of caspases in autophagy-apoptosis crosstalk will provide a framework for more precise manipulation of these two processes during cell death.
AMP激活的蛋白激酶对ULK1(HATG1)的磷酸化将能量传感连接到线粒体。
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期刊: Science (New York, N.Y.)
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