Actin cytoskeleton vulnerability to disulfide stress mediates disulfidptosis.

Actin cytoskeleton vulnerability to disulfide stress mediates disulfidptosis.
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DOI:
10.1038/s41556-023-01091-2
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发表时间:
2023-03
影响因子:
21.3
通讯作者:
Gan, Boyi
Gan, Boyi
中科院分区:
生物学1区
文献类型:
--
作者:
Liu, Xiaoguang;Nie, Litong;Zhang, Yilei;Yan, Yuelong;Wang, Chao;Colic, Medina;Olszewski, Kellen;Horbath, Amber;Chen, Xiong;Lei, Guang;Mao, Chao;Wu, Shiqi;Zhuang, Li;Poyurovsky, Masha V.;James You, M.;Hart, Traver;Billadeau, Daniel D.;Chen, Junjie;Gan, Boyi

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SLC7A11-mediated cystine uptake suppresses ferroptosis yet promotes cell death under glucose starvation; the nature of the latter cell death remains unknown. Here, we show that aberrant accumulation of intracellular disulfides in SLC7A11high cells under glucose starvation induces a previously uncharacterized form of cell death distinct from apoptosis or ferroptosis. We term this cell death disulfidptosis. Chemical proteomics and cell biological analyses showed that glucose starvation in SLC7A11high cells induces aberrant disulfide bonds in actin cytoskeleton proteins and F-actin collapse in a SLC7A11-dependent manner. CRISPR screens and functional studies revealed that inactivation of the WAVE regulatory complex (WRC, which promotes actin polymerization and lamellipodia formation) suppresses disulfidptosis, whereas constitutive activation of Rac promotes disulfidptosis. We further showed that glucose transporter inhibitors induce disulfidptosis in SLC7A11high cancer cells and suppress SLC7A11high tumour growth. Our results reveal that the susceptibility of the actin cytoskeleton to disulfide stress mediates disulfidptosis and suggest a therapeutic strategy to target disulfidptosis in cancer treatment.
癌细胞对葡萄糖限制和双胍类药物敏感性的代谢决定因素。
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