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NR4A1 retards adipocyte differentiation or maturation via enhancing GATA2 and p53 expression
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NR4A1 retards adipocyte differentiation or maturation via enhancing GATA2 and p53 expression
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Journal Article
NR4A1 retards adipocyte differentiation or maturation via enhancing GATA2 and p53 expression
2018
Overview
Nuclear receptor subfamily 4 group A member 1 (NR4A1) is an orphan nuclear receptor with diverse functions. It has been reported that NR4A1, as a transcriptional activator, is implicated in glucose and lipid metabolism. The aim of this study was to investigate the regulatory role of NR4A1 in adipogenesis and explore the underlying mechanisms. Quantitative real‐time PCR and Western blotting were used to analyse the expression of genes involved in synthesis and mobilization of fats in vivo and in vitro. Dual‐luciferase reporter assay was conducted to study the regulatory mechanisms of NR4A1. Our data from in vivo study confirmed that NR4A1 knockout (KO) mice fed with high‐fat diet were more prone to obesity, and gene expression levels of PPARγ and FAS were increased in KO mice compared to controls; our data from in vitro study showed that NR4A1 overexpression in 3T3‐L1 pre‐adipocytes inhibited adipogenesis. Moreover, NR4A1 enhanced GATA binding protein 2 (GATA2) expression, which in turn inhibited peroxisome proliferator‐activated receptor γ (PPARγ); NR4A1 inhibited sterol regulatory element binding transcription factor 1 (SREBP1) and its downstream gene fatty acid synthase (FAS) by up‐regulating p53. NR4A1 inhibits the differentiation and lipid accumulation of adipocytes by enhancing the expression of GATA2 and p53.
Publisher
John Wiley and Sons Inc
Subject
/ Animals
/ Cell Differentiation - genetics
/ Diet, High-Fat - adverse effects
/ Fatty Acid Synthase, Type I - genetics
/ Fatty Acid Synthase, Type I - metabolism
/ GATA2 Transcription Factor - genetics
/ GATA2 Transcription Factor - metabolism
/ Mice
/ NR4A1
/ Nuclear Receptor Subfamily 4, Group A, Member 1 - deficiency
/ Nuclear Receptor Subfamily 4, Group A, Member 1 - genetics
/ obesity
/ Original
/ PPARγ
/ Sterol Regulatory Element Binding Protein 1 - genetics
/ Sterol Regulatory Element Binding Protein 1 - metabolism
