HDAC2

HDAC2

A gene on chromosome 6q21 that encodes histone deacetylase 2, which belongs to the histone deacetylase family, which form large multiprotein complexes and adeacetylate lysine residues at the N-terminal regions of core histones (H2A, H2B, H3 and H4). HDAC2 forms transcriptional repressor complexes by associating with various proteins, including YY1—a mammalian zinc-finger transcription factor—MAD, SIN3 and N-COR; it plays a key role in transcription regulation, cell cycle progression and development.
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Expression of the histone modification marker HDAC2 was significantly increased in SVs from the DES group compared with the vehicle group at week 5 but not at week 10.
The researchers also analyzed postmortem brains of Alzheimer's patients and found elevated levels of HDAC2 in the hippocampus and entorhinal cortex, which play important roles in memory storage.
The p65 (ReIA) subunit of NF-kappaB interacts with the histone deacetylase (HDAC) corepressors HDAC1 and HDAC2 to negatively regulate gene expression.
Based on in vitro studies, ZOLINZA inhibits the enzymatic activity of HDAC1, HDAC2, HDAC3 (Class I) and HDAC 6 (class II) at nanomolar concentrations (IC50<86 nM).
Lorenzo Puri and his colleagues at the Burnham Institute for Medical Research say that their study showed that the dystrophin mutation causes an increase in the amount of the histone deacetylase enzyme, HDAC2, which in turn alters the gene expression profile in the diseased muscle cells compared to normal muscle cells.
In "A Novel Macrolide/Fluoroketolide, CEM-101, Reverses Corticosteroid Insensitivity Under Oxidative Stress via PI3K Pathway Inhibition (Poster #3506)," the authors demonstrated that CEM-101 restored corticosteroid sensitivity by restoring HDAC activity and HDAC2 expression and preventing protein kinase B (Akt) phosphorylation by inhibiting the phosphoinositide 3 kinase (PI3K) pathway in human monocytic U937 cells in vitro.
The Mammalian HDAC enzymes The Class I HDACs -HDAC1 and HDAC2 -HDAC3 -HDAC8 -HDAC11 The Class II HDACs - HDAC4 and HDAC5 - HDAC6 - HDAC7 - HDAC9 - HDAC10 The Class III HDACs 7.
We found that atypical antipsychotic drugs trigger an increase of HDAC2 in frontal cortex of individuals with schizophrenia, which then reduces the presence of mGlu2, and thereby limits the efficacy of these drugs," Mitsumasa Kurita, PhD, a postdoctoral fellow at Mount Sinai and the lead author of the study, said.
1 Mechanism of Action Vorinostat inhibits the enzymatic activity of histone deacetylases HDAC1, HDAC2 and HDAC3 (Class I) and HDAC6 (Class II) at nanomolar concentrations (IC50 less than 86 nM).
Wood says HDAC3 and HDAC2 appear to serve as brake pads that are always engaged, working to slow down or stop the steady stream of information encoded into memory.
Levels of HDAC2 are markedly unregulated in the aged mouse brain, the brain of several mouse models of Alzheimer's disease (AD), as well as in the human postmortem AD brain.
In contrast to the hippocampus, HDAC2 and HDAC5 levels in the NAc were reduced by chronic stress, suggesting opposing roles for histone modifications in the hippocampus and NAc in stress-related dysphoria (Renthal et al.