GPX4
生物
肾透明细胞癌
癌症研究
细胞生物学
癌变
程序性细胞死亡
癌细胞
化学
癌症
生物化学
谷胱甘肽
遗传学
谷胱甘肽过氧化物酶
肾细胞癌
细胞凋亡
医学
酶
内科学
作者
Yilong Zou,Michael J. Palte,Amy Deik,Haoxin Li,John K. Eaton,Wenyu Wang,Yuen‐Yi Tseng,Rebecca Deasy,Maria Alimova,Vlado Dančík,Elizaveta S. Leshchiner,Vasanthi S. Viswanathan,Sabina Signoretti,Toni K. Choueiri,Jesse S. Boehm,Bridget K. Wagner,John G. Doench,Clary B. Clish,Paul A. Clemons,Stuart L. Schreiber
摘要
SUMMARY Kidney cancers are characterized by extensive metabolic reprogramming and resistance to a broad range of anti-cancer therapies. By interrogating the Cancer Therapeutics Response Portal compound sensitivity dataset, we show that cells of clear-cell renal cell carcinoma (ccRCC) possess a lineage-specific vulnerability to ferroptosis that can be exploited by inhibiting glutathione peroxidase 4 (GPX4). Using genome-wide CRISPR screening and lipidomic profiling, we reveal that this vulnerability is driven by the HIF-2α–HILPDA pathway by inducing a polyunsaturated fatty acyl (PUFA)-lipid-enriched cell state that is dependent on GPX4 for survival and susceptible to ferroptosis. This cell state is developmentally primed by the HNF-1β–1-Acylglycerol-3-Phosphate O-Acyltransferase 3 (AGPAT3) axis in the renal lineage. In addition to PUFA metabolism, ferroptosis is facilitated by a phospholipid flippase TMEM30A involved in membrane topology. Our study uncovers an oncogenesis-associated vulnerability, delineates the underlying mechanisms and suggests targeting GPX4 to induce ferroptosis as a therapeutic opportunity in ccRCC. HIGHLIGHTS ccRCC cells exhibit strong susceptibility to GPX4 inhibition-induced ferroptosis The GPX4-dependent and ferroptosis-susceptible state in ccRCC is associated with PUFA-lipid abundance The HIF-2α–HILPDA axis promotes the selective deposition of PUFA-lipids and ferroptosis susceptibility AGPAT3 selectively synthesizes PUFA-phospholipids and primes renal cells for ferroptosis
科研通智能强力驱动
Strongly Powered by AbleSci AI