CSAD Ameliorates Lipid Accumulation in High-Fat Diet-Fed Mice

作者：Rongrong Tan, Jiayang Li, Lu Liu, Qian Wu, Lei Fan, Ningning Ma, Chuwei Yu, Henglei Lu, Xuemei Zhang, Jing Chen, Likun Gong, Jin Ren · 发表于：International Journal of Molecular Sciences · 年份：2022 · DOI：10.3390/ijms232415931 · 被引用次数：19 · 研究领域：Peroxisome Proliferator-Activated Receptors、Aldose Reductase and Taurine、Metabolism and Genetic Disorders

Non-alcoholic fatty liver disease (NAFLD) is a chronic metabolic disease manifested in hepatic steatosis, inflammation, fibrosis, etc., which affects over one-quarter of the population around the world. Since no effective therapeutic drugs are available to cope with this widespread epidemic, the functional research of genes with altered expression during NAFLD helps understand the pathogenesis of this disease and the development of new potential therapeutic targets for drugs. In the current work, we discovered via the analysis of the Gene Expression Omnibus (GEO) dataset that cysteine sulfinic acid decarboxylase (CSAD) decreased significantly in NAFLD patients, which was also confirmed in multiple NAFLD mouse models (HFD-fed C57BL/6J, db/db and HFHFrHC-fed C57BL/6J mice). Next, CSAD's function in the progression of NAFLD was explored using AAV-mediated liver-directed gene overexpression in an HFD-fed mouse model, where the overexpression of CSAD in the liver could alleviate NAFLD-associated pathologies, including body weight, liver/body weight ratio, hepatic triglyceride and total cholesterol, and the degree of steatosis. Mechanically, we found that the overexpression of CSAD could increase the expression of some genes related to fatty acid β-oxidation (Acad1, Ppara, and Acox1). Furthermore, we also detected that CSAD could improve mitochondrial injury in vitro and in vivo. Finally, we proposed that the effect of CSAD on lipid accumulation might be independent of the taurine ...