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Journal of Chinese Pharmaceutical Sciences ›› 2022, Vol. 31 ›› Issue (9): 698-710.DOI: 10.5246/jcps.2022.09.059

• Original articles • Previous Articles     Next Articles

Salvianolic acid B alleviates oxidative stress in non-alcoholic fatty liver disease by mediating the SIRT3/FOXO1 signaling pathway

Xiaoqing Chen, Bo Peng*(), Hongmei Jiang, Changxu Zhang, Haiyan Li, Ziyin Li   

  1. Wuhan Third Hospital, Wuhan 430000, China
  • Received:2022-05-23 Revised:2022-06-12 Accepted:2022-06-27 Online:2022-09-30 Published:2022-09-30
  • Contact: Bo Peng

Abstract:

Salvianolic acid B (Sal B) is a polyphenolic antioxidant that has been shown to have anti-lipid accumulation, anti-inflammatory, and free oxygen radical scavenging activities in various diseases. Here, we aimed to examine whether Sal B could alleviate non-alcoholic fatty liver disease (NAFLD) and explore the possible mechanisms. Signaling pathways involved in oxidative stress, including SIRT3, SOD2, and FOXO1 pathways, were investigated by Western blotting analysis, RT-qPCR, and immunoprecipitation (IP). In the present study, oleic acid (OA) successfully induced lipid and peroxide accumulation, decreased SIRT3 expression, and increased FOXO1 acetylation. However, Sal B significantly reversed these trends. SIRT3 plasmid transfection further reduced the expression of acetylated FOXO1 and considerably enhanced the regulation of SIRT3 and acetylated FOXO1 induced by Sal B. Following SIRT3 siRNA transfection, Sal B-induced down-regulation of acetylated FOXO1 was blocked, suggesting that Sal B-mediated protection occurred through SIRT3-mediated FOXO1 deacetylation. The SIRT3/FOXO1 pathway was a critical therapeutic target for controlling oxidative stress in NAFLD, and Sal B conferred protection against OA-induced hepatic steatosis and oxidative stress through SIRT3-mediated FOXO1 deacetylation.

Key words: Oleic acid, Oxidative stress, Non-alcoholic fatty liver disease, SIRT3, Acetylated, Salvianolic acid B

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