کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2047747 | 1074022 | 2013 | 6 صفحه PDF | دانلود رایگان |
• XBP1s is increased during adipogenic differentiation.
• Intracellular β-catenin level is decreased by XBP1s.
• XBP1s directly suppresses the expression of Wnt10b.
• XBP1s inhibits the transcriptional activity of β-catenin.
Differentiation of preadipocytes into adipocytes is controlled by various transcription factors. Recently, the pro-adipogenic function of XBP1, a transcription factor upregulated by endoplasmic reticulum stress, has been reported. In this study, we demonstrated that XBP1 suppresses the expression of Wnt10b, an anti-adipogenic Wnt, during the differentiation of 3T3-L1 preadipocytes. The expression pattern of XBP1 was reciprocal to that of Wnt10b during the early stage of adipogenesis. The intracellular protein levels of β-catenin were negatively regulated by XBP1. Direct binding of XBP1 to the Wnt10b promoter and the subsequent decrease of the β-catenin signalling pathway represent a novel adipogenic differentiation mechanism.
Journal: FEBS Letters - Volume 587, Issue 11, 5 June 2013, Pages 1644–1649