BECN1 is a new driver of ferroptosis.

Abstract:

:Ferroptosis is a form of regulated cell death caused by iron accumulation and oxidative injury. BECN1 is a key regulator of macroautophagy/autophagy, a catabolic process of degradation induced by starvation or other stressors. Our recent findings reveal a novel alternative mechanism by which BECN1 can promote ferroptosis through the regulation of activity of the cysteine and glutamate antiporter system xc- in cancer cells. BECN1-dependent autophagy requires the formation of the BECN1-containing class III phosphatidylinositol 3-kinase (PtdIns3K) complex, whereas BECN1-dependent ferroptosis requires the formation of a BECN1-SLC7A11 complex. Furthermore, AMP-activated protein kinase (AMPK) is required for BECN1 phosphorylation to trigger formation of the BECN1-SLC7A11 complex in the process of inhibiting system xc- activity and inducing lipid peroxidation. These findings suggest that the autophagy-dependent and -independent functions of BECN1 play distinct roles in regulated cell death.

journal_name

Autophagy

journal_title

Autophagy

authors

Kang R,Zhu S,Zeh HJ,Klionsky DJ,Tang D

doi

10.1080/15548627.2018.1513758

subject

Has Abstract

pub_date

2018-01-01 00:00:00

pages

2173-2175

issue

12

eissn

1554-8627

issn

1554-8635

journal_volume

14

pub_type

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