Do you know about - Nuclear Receptors and the Epigenomic Regulation of Metabolism
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Nuclear Receptors and the Epigenomic Regulation of Metabolism Video Clips. Duration : 68.35 Mins.We had a good read. For the benefit of yourself. Be sure to read to the end. I want you to get good knowledge from Can Hdl Be Too High . Air date: Wednesday, May 04, 2011, 3:00:00 PM Timedisplayed is Eastern Time, Washington DC Local Category: Wednesday Afternoon Lectures Description: Nuclear receptors transduce environmental and metabolic signals into alterations in gene expression by recruiting coregulators that alter chromatin structure. The nuclear receptor PPARg is the target of antidiabetic thiazolidinedione (TZD) drugs, and a transcriptional regulator of lipid metabolism. The induction of PPARg is required for adipogenesis, and this is regulated by a coordination of hormonal, epigenomic, and transcriptional factors that define a novel early stage of adipognesis. In mature adipocytes, genomic binding of PPARg coordinates metabolic gene pathways that are conserved between rodents and humans. Rev-erbá is a nuclear heme receptor that functions as a component of a negative limb of the circadian clock. Heme binding to Rev-erbá stabilizes recruitment of a complex containing the corepressor NCoR and histone deacetylase 3 (HDAC3). In liver, circadian expression of Rev-erbá leads to its oscillating interaction with the genome, at a cistrome that is enriched near genes involved in lipid metabolism. This directs a circadian recruitment of NCoR and HDAC3 with a rhythm that is anti-phase to histone acetylation and recruitment of RNA polymerase II at these sites and at nearby genes. The hepatic rhythm of histone acetylation is abrogated by depletion of HDAC3, which also induces many of the lipid metabolic genes ...
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