Project description:Our class IIa HDAC inhibitor, NVS-HD1, inhibited HDAC4 with less than 1 nM potency while exhibiting >200 fold selectivity on class IIa HDACs compared to class I (HDAC1, 3, 8) and class IIb (HDAC6) HDACs, making it the most potent and selective class IIa HDAC inhibitor reported so far. We tested the efficacy of NVS-HD1 in the mouse denervation model, either alone or on the genetic background of HDAC4 whole-body inducible knockout (HDAC4 iRKO). Global gene expression changes in gastrocnemius muscles were profiled by RNAseq. In the innervated control legs, HDAC4 knockout or NVS-HD1 caused little changes in gene expression compared to WT mice. HDAC4 knockout or NVS-HD1 mainly reversed denervation induced changes and the genes regulated by them largely overlap, suggesting that NVS-HD1 is quite specific against class IIa HDACs.
Project description:WT and Q175 heterozygous (het) mice treated orally twice a day with vehicle (10% HPβCD), and Q175 mice treated with either 30 or 100 mg/kg orally twice a day CHDI-00390576. CHDI-00390576 is a Class IIa HDAC inhibitor. Mice were dosed from 4 weeks to 6 months of age.
Project description:R6/2 and WT mice treated orally twice a day with vehicle (10% HPβCD), and R6/2 mice treated with either 30 or 100 mg/kg orally twice a day CHDI-00390576. CHDI-00390576 is a Class IIa HDAC inhibitor. Mice were dosed from 4 - 12 weeks of age.
Project description:Analysis of Class II Histone Deacetylase (HDAC) regulation of hepatic gluconeogenesis at the gene expression level. We show that in liver, Class IIa HDACs (HDAC4, 5, and 7) are all phosphorylated and excluded from the nucleus by AMPK family kinases. In response to the fasting hormone glucagon, Class IIa HDACs rapidly translocate to the nucleus where they directly bind to the promoters of gluconeogenic enzymes such as G6Pase. In turn, HDAC4/5 mediate the acute transcriptional induction of these genes via deacetylation and activation of Foxo family transcription factors. Loss of Class IIa HDACs in the murine liver results in inhibition of FOXO target genes and lowers blood glucose, resulting in increased glycogen storage. Total RNA obtained from primary hepatocytes infected with shGFP or shHDAC4 & 5 subjected to 2 or 4 hours treatment with DMSO or forskolin.
Project description:Analysis of Class II Histone Deacetylase (HDAC) regulation of hepatic gluconeogenesis at the gene expression level. We show that in liver, Class IIa HDACs (HDAC4, 5, and 7) are all phosphorylated and excluded from the nucleus by AMPK family kinases. In response to the fasting hormone glucagon, Class IIa HDACs rapidly translocate to the nucleus where they directly bind to the promoters of gluconeogenic enzymes such as G6Pase. In turn, HDAC4/5 mediate the acute transcriptional induction of these genes via deacetylation and activation of Foxo family transcription factors. Loss of Class IIa HDACs in the murine liver results in inhibition of FOXO target genes and lowers blood glucose, resulting in increased glycogen storage.
Project description:The aim of this study was to identify differential gene expression resulting from the inhibition of class IIa HDACs in the CD3+ or CD11b+ cells residing in MMTV-PyMT tumors.