Loss of USF2 Promotes Proliferation, Migration and Mitophagy in a Redox-dependent Manner

Overview

Journal Redox Biol

Specialties Biology
Cell Biology
Endocrinology

Date 2020 Oct 15

PMID 33059314

Citations 16

Authors

Tabughang Franklin Chi

Fawzi Khoder-Agha

Daniela Mennerich

Sakari Kellokumpu

IIkka Miinalainen

Thomas Kietzmann

Elitsa Y Dimova

Affiliations

Soon will be listed here.

Abstract

The upstream stimulatory factor 2 (USF2) is a transcription factor implicated in several cellular processes and among them, tumor development seems to stand out. However, the data with respect to the role of USF2 in tumor development are conflicting suggesting that it acts either as tumor promoter or suppressor. Here we show that absence of USF2 promotes proliferation and migration. Thereby, we reveal a previously unknown function of USF2 in mitochondrial homeostasis. Mechanistically, we demonstrate that deficiency of USF2 promotes survival by inducing mitophagy in a ROS-sensitive manner by activating both ERK1/2 and AKT. Altogether, this study supports USF2's function as tumor suppressor and highlights its novel role for mitochondrial function and energy homeostasis thereby linking USF2 to conditions such as insulin resistance, type-2 diabetes mellitus, and the metabolic syndrome.

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