REV-ERBα activates the mTOR signalling pathway and promotes myotubes differentiation

Maayan Dadon-Freiberg, Nava Chapnik, Oren Froy*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Background Information: Mammalian target of rapamycin (mTOR) complex 1 (mTORC1) is a master regulator of cell and whole-body energy homoeostasis. REV-ERBα is a nuclear receptor that plays an important role in metabolism. While mTORC1 activation is necessary for muscle differentiation, the role of REV-ERBα is less clear. Results: We studied the effect of REV-ERBα overexpression and silencing as well as mTORC1 activation and inhibition on the differentiation of C2C12 myoblasts to myotubes. mTOR, myogenin and REV-ERBα were induced during differentiation of myoblasts into myotubes. REV-ERBα was found to activate mTORC1 during the differentiation process even in the absence of the differentiation medium. This activation was presumably through the downregulation of the expression of TSC1, an mTORC1 inhibitor. Conclusion: Herein we show that REV-ERBα promotes myoblasts differentiation via the activation of the mTORC1 signalling pathway. Significance: REV-ERBα modulation can activate mTORC1 signalling and promote myoblasts differentiation.

Original languageAmerican English
Pages (from-to)213-221
Number of pages9
JournalBiology of the Cell
Volume112
Issue number8
DOIs
StatePublished - 1 Aug 2020

Bibliographical note

Publisher Copyright:
© 2020 Société Française des Microscopies and Société de Biologie Cellulaire de France. Published by John Wiley & Sons Ltd

Keywords

  • C2C12
  • Differentiation
  • Myoblasts
  • Myotubes
  • REV-ERVα
  • mTOR

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