n/a
Article Publish Status: FREE
Abstract Title:

Nuciferine protects against high-fat diet-induced hepatic steatosis and insulin resistanceactivating TFEB-mediated autophagy-lysosomal pathway.

Abstract Source:

Acta Pharm Sin B. 2022 Jun ;12(6):2869-2886. Epub 2021 Dec 22. PMID: 35755273

Abstract Author(s):

Xiliang Du, Chiara Di Malta, Zhiyuan Fang, Taiyu Shen, Xiaodi Niu, Meng Chen, Bo Jin, Hao Yu, Lin Lei, Wenwen Gao, Yuxiang Song, Zhe Wang, Chuang Xu, Zhijun Cao, Guowen Liu, Xinwei Li

Article Affiliation:

Xiliang Du

Abstract:

Nonalcoholic fatty liver disease (NAFLD) is characterized by hepatic steatosis and insulin resistance and there are currently no approved drugs for its treatment. Hyperactivation of mTOR complex 1 (mTORC1) and subsequent impairment of the transcription factor EB (TFEB)-mediated autophagy-lysosomal pathway (ALP) are implicated in the development of NAFLD. Accordingly, agents that augment hepatic TFEB transcriptional activity may have therapeutic potential against NAFLD. The objective of this study was to investigate the effects of nuciferine, a major active component from lotus leaf, on NAFLD and its underlying mechanism of action. Here we show that nuciferine activated ALP and alleviated steatosis, insulin resistance in the livers of NAFLD mice and palmitic acid-challenged hepatocytes in a TFEB-dependent manner. Mechanistic investigation revealed that nuciferine interacts with the Ragulator subunit hepatitis B X-interacting protein and impairs the interaction of the Ragulator complex with Rag GTPases, thereby suppressing lysosomal localization and activity of mTORC1, which activates TFEB-mediated ALP and further ameliorates hepatic steatosis and insulin resistance. Our present results indicate that nuciferine may be a potential agent for treating NAFLD and that regulation of the mTORC1-TFEB-ALP axis could represent a novel pharmacological strategy to combat NAFLD.

Print Options


Key Research Topics

This website is for information purposes only. By providing the information contained herein we are not diagnosing, treating, curing, mitigating, or preventing any type of disease or medical condition. Before beginning any type of natural, integrative or conventional treatment regimen, it is advisable to seek the advice of a licensed healthcare professional.

© Copyright 2008-2024 GreenMedInfo.com, Journal Articles copyright of original owners, MeSH copyright NLM.