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REV‐ERBα activates the mTOR signaling pathway and promotes myotubes differentiation
Biology of the Cell ( IF 2.4 ) Pub Date : 2020-05-07 , DOI: 10.1111/boc.201900091
Maayan Dadon-Freiberg 1 , Nava Chapnik 1 , Oren Froy 1
Affiliation  

BACKGROUND INFORMATION Mammalian target of rapamycin (mTOR) complex 1 (mTORC1) is a master regulator of cell and whole-body energy homeostasis. 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 signaling pathway. SIGNIFICANCE REV-ERBα modulation can activate mTORC1 signaling and promote myoblasts differentiation. This article is protected by copyright. All rights reserved.

中文翻译:

REV-ERBα 激活 mTOR 信号通路并促进肌管分化

背景信息 哺乳动物雷帕霉素靶蛋白 (mTOR) 复合物 1 (mTORC1) 是细胞和全身能量稳态的主要调节器。REV-ERBα 是一种在代谢中起重要作用的核受体。虽然 mTORC1 激活是肌肉分化所必需的,但 REV-ERBα 的作用尚不清楚。结果 我们研究了 REV-ERBα 过表达和沉默以及 mTORC1 激活和抑制对 C2C12 成肌细胞向肌管分化的影响。mTOR、肌细胞生成素和 REV-ERBα 在成肌细胞分化为肌管的过程中被诱导。发现即使在没有分化培养基的情况下,REV-ERBα 在分化过程中也能激活 mTORC1。这种激活可能是通过下调 TSC1(一种 mTORC1 抑制剂)的表达来实现的。结论 在本文中,我们表明 REV-ERBα 通过激活 mTORC1 信号通路促进成肌细胞分化。意义 REV-ERBα 调制可以激活 mTORC1 信号并促进成肌细胞分化。本文受版权保护。版权所有。
更新日期:2020-05-07
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