| First Author | You SH | Year | 2010 |
| Journal | Mol Endocrinol | Volume | 24 |
| Issue | 7 | Pages | 1359-67 |
| PubMed ID | 20427468 | Mgi Jnum | J:162512 |
| Mgi Id | MGI:4819075 | Doi | 10.1210/me.2009-0501 |
| Citation | You SH, et al. (2010) The interaction between nuclear receptor corepressor and histone deacetylase 3 regulates both positive and negative thyroid hormone action in vivo. Mol Endocrinol 24(7):1359-67 |
| abstractText | Thyroid hormone (TH) plays a critical role in development, growth, and metabolism by binding to nuclear TH receptors to modulate gene expression. In the absence of TH, TH receptors repress genes that are TH-activated by recruiting the nuclear receptor corepressor (NCoR), which exists in a tight complex with histone deacetylase 3 (HDAC3). Here we explored the actions of TH in the deacetylase activating domain mutant (DADm) mouse, whose NCoR-HDAC3 interaction is genetically disrupted. Several TH-activated genes were derepressed in the liver of euthyroid and hypothyroid DADm mice, consistent with the corepressor paradigm and a critical role of the NCoR-HDAC3 interaction in basal repression. The role of corepressors in genes that are down-regulated by TH is less well understood. Remarkably, circulating TSH levels were increased in euthyroid DADm mice, and the pituitary expression of TSHalpha, a classic TH-down-regulated gene, was modestly but significantly elevated regardless of TH status. Thus, the NCoR interaction with HDAC3 modulates expression of both positively- and negatively-regulated genes by TH in vivo. |
