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Function of GATA Transcription Factors in Preadipocyte-Adipocyte Transition

Science  06 Oct 2000:
Vol. 290, Issue 5489, pp. 134-138
DOI: 10.1126/science.290.5489.134

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Abstract

Genes that control the early stages of adipogenesis remain largely unknown. Here, we show that murine GATA-2 and GATA-3 are specifically expressed in white adipocyte precursors and that their down-regulation sets the stage for terminal differentiation. Constitutive GATA-2 and GATA-3 expression suppressed adipocyte differentiation and trapped cells at the preadipocyte stage. This effect is mediated, at least in part, through the direct suppression of peroxisome proliferator–activated receptor γ. GATA-3–deficient embryonic stem cells exhibit an enhanced capacity to differentiate into adipocytes, and defective GATA-2 and GATA-3 expression is associated with obesity. Thus, GATA-2 and GATA-3 regulate adipocyte differentiation through molecular control of the preadipocyte-adipocyte transition.

  • * To whom correspondence should be addressed. E-mail: ghotamis{at}hsph.harvard.edu

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