索拉非尼
癌症研究
肝细胞癌
转录组
小发夹RNA
肝癌
ATF4
转录因子
细胞凋亡
生物
基因表达
基因
遗传学
基因敲除
作者
Ruize Gao,Ravi Kiran Reddy Kalathur,Mairene Coto‐Llerena,Caner Ercan,David Buechel,Shuang Song,Salvatore Piscuoglio,Michael T. Dill,Fernando D. Camargo,Gerhard Christofori,Fengyuan Tang
标识
DOI:10.15252/emmm.202114351
摘要
Understanding the mechanisms underlying evasive resistance in cancer is an unmet medical need to improve the efficacy of current therapies. In this study, a combination of shRNA-mediated synthetic lethality screening and transcriptomic analysis revealed the transcription factors YAP/TAZ as key drivers of Sorafenib resistance in hepatocellular carcinoma (HCC) by repressing Sorafenib-induced ferroptosis. Mechanistically, in a TEAD-dependent manner, YAP/TAZ induce the expression of SLC7A11, a key transporter maintaining intracellular glutathione homeostasis, thus enabling HCC cells to overcome Sorafenib-induced ferroptosis. At the same time, YAP/TAZ sustain the protein stability, nuclear localization, and transcriptional activity of ATF4 which in turn cooperates to induce SLC7A11 expression. Our study uncovers a critical role of YAP/TAZ in the repression of ferroptosis and thus in the establishment of Sorafenib resistance in HCC, highlighting YAP/TAZ-based rewiring strategies as potential approaches to overcome HCC therapy resistance.
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