Mitochondrial Oligomers Boost Glycolysis in Cancer Stem Cells to Facilitate Blebbishield-mediated Transformation After Apoptosis

Overview

Journal Cell Death Discov

Date 2016 Aug 24

PMID 27551498

Citations 16

Authors

G G Jinesh

J R Molina

L Huang

N M Laing

G B Mills

M Bar-Eli

A M Kamat

Affiliations

Soon will be listed here.

Abstract

Apoptosis culminates in secondary necrosis due to lack of ATP. Cancer stem cells form spheres after apoptosis by evoking the blebbishield emergency program. Hence, determining how blebbishields avoid secondary necrosis is crucial. Here we demonstrate that N-Myc and VEGFR2 control transformation from blebbishields, during which oligomers of K-Ras, p27, BAD, Bax, and Bak boost glycolysis to avoid secondary necrosis. Non-apoptotic cancer cells also utilize oligomers to boost glycolysis, which differentiates the glycolytic function of oligomers from their apoptotic action. Smac mimetic in combination with TNF-α or TRAIL but not in combination with FasL abrogates transformation from blebbishields by inducing secondary necrosis. Thus blebbishield-mediated transformation is dependent on glycolysis, and Smac mimetics represent potential candidates to abrogate the blebbishield emergency program.

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