Adipocyte retinoic acid receptor α prevents obesity and steatohepatitis by regulating energy expenditure and lipogenesis.
Adipocyte retinoic acid receptor α prevents obesity and steatohepatitis by regulating energy expenditure and lipogenesis.
复制标题
脂肪细胞视黄酸受体α通过调节能量消耗和脂肪生成来预防肥胖和脂肪性肝炎。
DOI：
10.1002/oby.23929
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发表时间：
2024
期刊：
影响因子：
--
通讯作者：
Zhang,Yanqiao
中科院分区：
文献类型：
--
作者：
CassimBawa,FathimaN;Hu,Shuwei;Gopoju,Raja;Shiyab,Amy;Mongan,Kai;Xu,Yanyong;Pan,Xiaoli;Clark,Alyssa;Wang,Hui;Zhang,Yanqiao
ObjectiveThe adipose tissue–liver axis is a major regulator of the pathogenesis of nonalcoholic fatty liver disease (NAFLD). Retinoic acid signaling plays an important role in development and metabolism. However, little is known about the role of adipose retinoic acid signaling in the development of obesity‐associated NAFLD. In this work, the aim was to investigate whether and how retinoic acid receptor alpha (RARα) regulated the development of obesity and NAFLD.MethodsRARα expression in adipose tissue ofdb/dborob/obmice was determined.Rarαfl/flmice and adipocyte‐specificRarα−/−(RarαAdi−/−) mice were fed a chow diet for 1 year or high‐fat diet (HFD) for 20 weeks. Primary adipocytes and primary hepatocytes were co‐cultured. Metabolic regulation and inflammatory response were characterized.ResultsRARα expression was reduced in adipose tissue ofdb/dborob/obmice.RarαAdi−/−mice had increased obesity and steatohepatitis (NASH) when fed a chow diet or HFD. Loss of adipocyte RARα induced lipogenesis and inflammation in adipose tissue and the liver and reduced thermogenesis. In the co‐culture studies, loss of RARα in adipocytes induced inflammatory and lipogenic programs in hepatocytes.ConclusionsThe data demonstrate that RARα in adipocytes prevents obesity and NASH via inhibiting lipogenesis and inflammation and inducing energy expenditure.
