The intestinal microbiota programs diurnal rhythms in host metabolism through histone deacetylase 3

Oct 12, 2019Science (New York, N.Y.)

Gut bacteria influence daily cycles in body metabolism through a key enzyme

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Abstract

The intestinal microbiota programs diurnal metabolic rhythms in the mouse small intestine through histone deacetylase 3 (HDAC3).

  • The microbiota induced expression of intestinal epithelial HDAC3, which was rhythmically recruited to chromatin.
  • This recruitment resulted in synchronized diurnal oscillations in histone acetylation, metabolic gene expression, and nutrient uptake.
  • HDAC3 coactivated estrogen-related receptor α in a noncanonical manner, leading to microbiota-dependent rhythmic transcription of the lipid transporter gene.
  • Enhanced lipid absorption was observed, which is associated with diet-induced obesity.

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