Regulation of ferroptotic cancer cell death by GPX4.

Regulation of ferroptotic cancer cell death by GPX4.
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DOI:
10.1016/j.cell.2013.12.010
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发表时间:
2014-01-16
期刊:
影响因子:
64.5
通讯作者:
Stockwell BR
Stockwell BR
中科院分区:
生物学1区
文献类型:
--
作者:
Yang WS;SriRamaratnam R;Welsch ME;Shimada K;Skouta R;Viswanathan VS;Cheah JH;Clemons PA;Shamji AF;Clish CB;Brown LM;Girotti AW;Cornish VW;Schreiber SL;Stockwell BR

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铁死亡是一种非凋亡性细胞死亡,其关键调节因子仍不清楚。我们寻找一种共同的介质来诱导 12 种铁死亡小分子的致死性。我们使用靶向代谢组学分析来发现谷胱甘肽的消耗会导致谷胱甘肽过氧化物酶 (GPX) 失活,以响应一类化合物,并使用化学蛋白质组学策略来发现 GPX4 直接受到第二类化合物的抑制。 GPX4 过表达和敲低可调节 12 种铁死亡诱导剂的致死率,但不能调节具有其他致死机制的 11 种化合物的致死率。此外,两种代表性的铁死亡诱导剂可阻止异种移植小鼠肿瘤模型中的肿瘤生长。 177 种癌细胞系的敏感性分析显示,弥漫性大 B 细胞淋巴瘤和肾细胞癌特别容易受到 GPX4 调节的铁死亡的影响。因此,GPX4 是铁死亡癌细胞死亡的重要调节因子。
Ferroptosis is a form of nonapoptotic cell death for which key regulators remain unknown. We sought a common mediator for the lethality of 12 ferroptosisinducing small molecules. We used targeted metabolomic profiling to discover that depletion of glutathione causes inactivation of glutathione peroxidases (GPXs) in response to one class of compounds and a chemoproteomics strategy to discover that GPX4 is directly inhibited by a second class of compounds. GPX4 overexpression and knockdown modulated the lethality of 12 ferroptosis inducers, but not of 11 compounds with other lethal mechanisms. In addition, two representative ferroptosis inducers prevented tumor growth in xenograft mouse tumor models. Sensitivity profiling in 177 cancer cell lines revealed that diffuse large B cell lymphomas and renal cell carcinomas are particularly susceptible to GPX4-regulated ferroptosis. Thus, GPX4 is an essential regulator of ferroptotic cancer cell death.
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