脂肪变性
安普克
PI3K/AKT/mTOR通路
藤蔓
内科学
化学
食品科学
内分泌学
生物
生物化学
医学
植物
信号转导
磷酸化
蛋白激酶A
作者
Chuting Wang,Fang Yang,Wei Zeng,Xin Chen,Zhenpeng Qiu,Qi Wang,Yan Meng,Guohua Zheng,Junjie Hu
标识
DOI:10.1111/1750-3841.17025
摘要
Abstract Vine tea ( Ampelopsis grossedentata ), a traditional Chinese tea, is rich in flavonoids with various biological activities. Our study found that Vine tea total flavonoids (TFs) treatment reduced the body mass and blood lipid levels and improved the hepatic tissue morphology in mice fed the high‐fat diet (HFD). In vivo, TF treatment activated the hepatic adenosine monophosphate‐activated protein kinase (AMPK)/mammalian target of rapamycin (mTOR) pathway, initiated autophagy, and regulated the expression levels of proteins for lipid metabolism in those HFD‐fed mice. In vitro, TF treatment dramatically reduced the lipid droplets and triacylglycerol content in HepG2 and L02 cells treated with oleic acid (OA). These were associated with the activation of the AMPK/mTOR pathway and autophagy initiation in OA‐treated hepatocytes. This phenotype was abolished in the presence of 3‐methyladenine, an autophagy inhibitor. Our results indicated that the TF activation of AMPK/mTOR leads to the stimulation of autophagy and a decrease in the buildup of intracellular lipids in hepatocytes, showing the potential of TF as a therapeutic agent for nonalcoholic fatty liver disease. Practical Application Vine tea, a tea drink, has been consumed by Chinese folk for over a thousand years. The result of this study will provide evidence that vine tea total flavonoids have potential use as a functional material for the prevention and amelioration of nonalcoholic fatty liver disease.
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