Ginsenoside Rg1 Prevents Starvation-induced Muscle Protein Degradation Via Regulation of AKT/mTOR/FoxO Signaling in C2C12 Myotubes

Overview

Journal Exp Ther Med

Specialty Pathology

Date 2017 Aug 8

PMID 28781621

Citations 19

Authors

Fengyu Li

Xiaoxue Li

Xuewei Peng

Lili Sun

Shengnan Jia

Ping Wang

Shuang Ma

Hongyan Zhao

Qingmiao Yu

Hongliang Huo

Affiliations

Soon will be listed here.

Abstract

Skeletal muscle atrophy is often caused by catabolic conditions including fasting, disuse, aging and chronic diseases, such as chronic obstructive pulmonary disease. Atrophy occurs when the protein degradation rate exceeds the rate of protein synthesis. Therefore, maintaining a balance between the synthesis and degradation of protein in muscle cells is a major way to prevent skeletal muscle atrophy. Ginsenoside Rg1 (Rg1) is a primary active ingredient in , which is considered to be one of the most valuable herbs in traditional Chinese medicine. In the current study, Rg1 was observed to inhibit the expression of MuRF-1 and atrogin-1 in C2C12 muscle cells in a starvation model. Rg1 also activated the phosphorylation of mammalian target of rapamycin (mTOR), protein kinase B (AKT), and forkhead transcription factor O, subtypes 1 and 3a. This phosphorylation was inhibited by LY294002, a phosphatidylinositol 3-kinase inhibitor. These data suggest that Rg1 may participate in the regulation of the balance between protein synthesis and degradation, and that the function of Rg1 is associated with the AKT/mTOR/FoxO signaling pathway.

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