Vitamin D and adipogenesis: new molecular insights |
| |
Authors: | Wood Richard J |
| |
Institution: | Mineral Bioavailability Laboratory at Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA 02111, USA. richard.wood@tuft.edu |
| |
Abstract: | The focus of the current review is to highlight some new insights into the molecular mechanism by which vitamin D, a potentially nutritionally modulated factor, influences adipogenesis. Recent studies, predominantly using the mouse 3T3-L1 pre-adipocyte cell culture model, have shown that the role of vitamin D in inhibiting adipogenesis is mediated at the molecular level through a vitamin D receptor (VDR)-dependent inhibition of CCAAT enhancer binding protein-alpha (C/EBP alpha) and peroxisome proliferator-activated receptor-gamma (PPAR gamma) expression and a decrease in PPAR gamma transactivating activity in the pre-adipocyte. The latter action may reflect a vitamin D-induced decrease in endogenous PPAR gamma ligand availability and a competition between VDR and PPAR gamma for a limiting amount of retinoid X receptor (RXR), a common heterodimeric binding partner of both nuclear receptors. |
| |
Keywords: | adipogenesis calcitriol preadipocyte vitamin D receptor |
本文献已被 PubMed 等数据库收录! |
|