Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 20, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/ijms20071605
Keywords
HDAC6; HDAC inhibitor; acetylation; beta-catenin; AKT; synapse; neuronal differentiation
Funding
- National Institute of Mental Health Clinical Scientist Development Award [K08MH086846]
- National Institute of Mental Health Biobehavioral Research Awards for Innovative New Scientists (BRAINS) Award [R01MH113858]
- Doris Duke Charitable Foundation Clinical Scientist Development Award [2015088]
- Ryan Licht Sang Bipolar Foundation
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Recent studies show that histone deacetylase 6 (HDAC6) has important roles in the human brain, especially in the context of a number of nervous system disorders. Animal models of neurodevelopmental, neurodegenerative, and neuropsychiatric disorders show that HDAC6 modulates important biological processes relevant to disease biology. Pan-selective histone deacetylase (HDAC) inhibitors had been studied in animal behavioral assays and shown to induce synaptogenesis in rodent neuronal cultures. While most studies of HDACs in the nervous system have focused on class I HDACs located in the nucleus (e.g., HDACs 1,2,3), recent findings in rodent models suggest that the cytoplasmic class IIb HDAC, HDAC6, plays an important role in regulating mood-related behaviors. Human studies suggest a significant role for synaptic dysfunction in the prefrontal cortex (PFC) and hippocampus in depression. Studies of HDAC inhibitors (HDACi) in human neuronal cells show that HDAC6 inhibitors (HDAC6i) increase the acetylation of specific lysine residues in proteins involved in synaptogenesis. This has led to the hypothesis that HDAC6i may modulate synaptic biology not through effects on the acetylation of histones, but by regulating acetylation of non-histone proteins.
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