Abstract:
:Ferroptosis is an iron-dependent form of regulated necrosis. It is implicated in various human diseases, including ischemic organ damage and cancer. Here, we report the crucial role of autophagy, particularly autophagic degradation of cellular iron storage proteins (a process known as ferritinophagy), in ferroptosis. Using RNAi screening coupled with subsequent genetic analysis, we identified multiple autophagy-related genes as positive regulators of ferroptosis. Ferroptosis induction led to autophagy activation and consequent degradation of ferritin and ferritinophagy cargo receptor NCOA4. Consistently, inhibition of ferritinophagy by blockage of autophagy or knockdown of NCOA4 abrogated the accumulation of ferroptosis-associated cellular labile iron and reactive oxygen species, as well as eventual ferroptotic cell death. Therefore, ferroptosis is an autophagic cell death process, and NCOA4-mediated ferritinophagy supports ferroptosis by controlling cellular iron homeostasis.
journal_name
Cell Resjournal_title
Cell researchauthors
Gao M,Monian P,Pan Q,Zhang W,Xiang J,Jiang Xdoi
10.1038/cr.2016.95subject
Has Abstractpub_date
2016-09-01 00:00:00pages
1021-32issue
9eissn
1001-0602issn
1748-7838pii
cr201695journal_volume
26pub_type
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