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Updated: Aug 16, 2026

Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis
Published on: June 3, 2016
Low-level arsenite activates the transcription of genes involved in adipose differentiation
1Laboratoire de Biogénotoxicologie et Mutagenèse Environnementale, (EA 1784, IFR112, PMSE), Faculté de Médecine, Marseille, France.
Abstract:
In this study we analyzed gene expression in 3T3-F442A pre-adipocyte cells that differentiate in the presence of micro-molar arsenate concentration. Two concentrations of arsenite (As2O3, 0.25 micromol/L and 0.5 micromol/L) were applied for three days with and without insulin (170 nmol/L) and gene expressions were evaluated by quantitative RT-PCR. The genes included genes of oxidative-stress responses: heme-oxygenase-1 (HO1) and the hypoxia inducible factor 1a (HIF1alpha), genes of cell-cycle: c-jun and Kruppel like factor 5 (KLF5), and genes that play important roles in adipose determination: a peroxisome proliferator-activated receptor (PPARgamma) and a CCAAT/ enhancer binding protein (C/EBPalpha). Arsenite induced the expression of HO1, HIF1alpha, KLF5, PPARgamma and C/EBPalpha. These results suggest that under condition of oxidative stress arsenite induces genes that are required for adipose differentiation.
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