Volume 66, Issue 1 pp. 40-46

Vitamin D and adipogenesis: new molecular insights

Richard J Wood

Corresponding Author

Richard J Wood

Mineral Bioavailability Laboratory at Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, Massachusetts, USA

RJ Wood, Mineral Bioavailability Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, 711 Washington Street, Boston, MA 02111, USA. E-mail: [email protected], Phone: +1-617-556-3192, Fax: +1-617-556-3344Search for more papers by this author
First published: 01 February 2008
Citations: 17

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/EBPα) and peroxisome proliferator-activated receptor-gamma (PPARγ) expression and a decrease in PPARγ transactivating activity in the pre-adipocyte. The latter action may reflect a vitamin D-induced decrease in endogenous PPARγ ligand availability and a competition between VDR and PPARγ for a limiting amount of retinoid X receptor (RXR), a common heterodimeric binding partner of both nuclear receptors.

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