USP30 deubiquitylates mitochondrial Parkin substrates and restricts apoptotic cell death.

USP30 deubiquitylates mitochondrial Parkin substrates and restricts apoptotic cell death.
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USP30去偶联性线粒体Parkin底物并限制凋亡细胞死亡。

DOI:
10.15252/embr.201439820
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发表时间:
2015-05
期刊:
影响因子:
7.7
通讯作者:
Urbé S
Urbé S
中科院分区:
生物学2区
文献类型:
--
作者:
Liang JR;Martinez A;Lane JD;Mayor U;Clague MJ;Urbé S

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线粒体在细胞死亡途径的协调中起着关键作用。在这里,我们表明,在线粒体的泛素动力学的控制有助于调节细胞凋亡的细胞死亡。独特的线粒体去泛素化酶,USP 30,反对帕金森病依赖性泛素化的TOM 20,和它的消耗增强去极化诱导的细胞死亡在帕金森病过度表达细胞。重要的是,USP 30还调节BAX/BAK依赖性细胞凋亡,其耗尽使癌细胞对BH 3模拟物敏感。这些结果为USP 30在确定线粒体细胞死亡阈值中的基本作用提供了第一个证据,并表明USP 30是组合抗癌治疗的潜在靶点。
Mitochondria play a pivotal role in the orchestration of cell death pathways. Here, we show that the control of ubiquitin dynamics at mitochondria contributes to the regulation of apoptotic cell death. The unique mitochondrial deubiquitylase, USP30, opposes Parkin-dependent ubiquitylation of TOM20, and its depletion enhances depolarization-induced cell death in Parkin-overexpressing cells. Importantly, USP30 also regulates BAX/BAK-dependent apoptosis, and its depletion sensitizes cancer cells to BH3-mimetics. These results provide the first evidence for a fundamental role of USP30 in determining the threshold for mitochondrial cell death and suggest USP30 as a potential target for combinatorial anti-cancer therapy.
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