HDAC1 Gene

HDAC1 Gene

Introduction

Hdac1 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

<div class="infobox infobox-gene"> [@haberland2009]
<div class="infobox-header">HDAC1</div> [@xu2011]
<div class="infobox-content"> [@janczura2018] Full Name: Histone Deacetylase 1<br> [@chen2022] Chromosomal Location: 1p35.2-p35.1<br> NCBI Gene ID: 3065<br> OMIM: 601241<br> Ensembl ID: ENSG00000100994<br> UniProt: Q13547<br> Associated Diseases: Alzheimer's Disease, Huntington's Disease, Parkinson's Disease, Rett Syndrome
</div>
</div>

Overview

HDAC1 ([Histone Deacetylase](/entities/hdac-enzymes) 1) is a Class I histone deacetylase that catalyzes the removal of acetyl groups from lysine residues on histone tails. As part of the Sin3, CoREST, and NuRD transcriptional repressor complexes, HDAC1 plays essential roles in chromatin remodeling, gene silencing, and epigenetic regulation. HDAC1 dysfunction is implicated in multiple neurodegenerative diseases, making it an important therapeutic target.

Pathway Diagram

HDAC1 Gene

Introduction

Hdac1 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

<div class="infobox infobox-gene"> [@haberland2009]
<div class="infobox-header">HDAC1</div> [@xu2011]
<div class="infobox-content"> [@janczura2018] Full Name: Histone Deacetylase 1<br> [@chen2022] Chromosomal Location: 1p35.2-p35.1<br> NCBI Gene ID: 3065<br> OMIM: 601241<br> Ensembl ID: ENSG00000100994<br> UniProt: Q13547<br> Associated Diseases: Alzheimer's Disease, Huntington's Disease, Parkinson's Disease, Rett Syndrome
</div>
</div>

Overview

HDAC1 ([Histone Deacetylase](/entities/hdac-enzymes) 1) is a Class I histone deacetylase that catalyzes the removal of acetyl groups from lysine residues on histone tails. As part of the Sin3, CoREST, and NuRD transcriptional repressor complexes, HDAC1 plays essential roles in chromatin remodeling, gene silencing, and epigenetic regulation. HDAC1 dysfunction is implicated in multiple neurodegenerative diseases, making it an important therapeutic target.

Pathway Diagram

Function

HDAC1 functions as a transcriptional repressor by deacetylating histone H3 and H4 tails, leading to chromatin compaction and reduced gene expression. The enzyme requires catalytic zinc ions and operates in complex with other HDACs and transcriptional co-repressors.

Key functions include:

• Chromatin Compaction: Deacetylates histones to promote heterochromatin formation
• Transcriptional Repression: Part of Sin3A, CoREST, and NuRD complexes
• Cell Cycle Regulation: Controls expression of cell cycle regulators
• DNA Damage Response: Regulates DNA repair gene expression
• Protein Quality Control: Deacetylates chaperones and [autophagy](/entities/autophagy) proteins
• Neuronal Development: Essential for neurogenesis and synaptic plasticity

Disease Associations

Alzheimer's Disease

• HDAC1 levels are reduced in AD hippocampus
• Loss of HDAC1 leads to increased histone acetylation and dysregulated gene expression
• HDAC1 protects against [Aβ](/proteins/amyloid-beta) toxicity
• Restoring HDAC1 improves memory in AD models
• HDAC inhibitors show promise but lack selectivity

Huntington's Disease

• Mutant [huntingtin](/proteins/huntingtin-protein) sequesters HDAC1 and other class I HDACs
• HDAC1 reduction contributes to transcriptional dysfunction
• HDAC1/2 activity is needed for neuronal survival
• HDAC inhibitors provide benefit despite complexity
• Selective HDAC1/3 inhibitors under development

Parkinson's Disease

• HDAC1 protects dopaminergic [neurons](/entities/neurons)
• [Alpha-synuclein](/proteins/alpha-synuclein) affects HDAC1 activity
• HDAC1 dysfunction contributes to mitochondrial dysfunction
• SIRT1 and HDAC1 have opposing activities
• Neuroprotective effects of HDAC1 activation

Rett Syndrome

• MECP2 mutations affect HDAC1 recruitment
• HDAC1 is downstream of MECP2 in transcriptional regulation
• Restoring HDAC1 function may benefit Rett patients

Expression

HDAC1 is widely expressed in the brain with high levels in:

• [Hippocampus](/brain-regions/hippocampus) (CA1-CA3 pyramidal neurons)
• Cerebral [cortex](/brain-regions/cortex) (layers II-VI)
• Striatum (medium spiny neurons)
• Cerebellum (Purkinje cells)
• Substantia nigra pars compacta

Key Publications

Therapeutic Targeting

| Agent | Mechanism | Development Stage | Notes |
|-------|-----------|-------------------|-------|
| Valproic acid | HDAC1/2/3 inhibitor | Clinical (epilepsy) | Broad HDAC inhibition |
| Entinostat (MS-275) | Class I HDAC inhibitor | Phase I/II | Selective for HDAC1/2/3 |
| RGFP966 | HDAC3 inhibitor | Preclinical | Neuron-specific effects |
| HDAC1-targeted siRNA | Gene silencing | Preclinical | Experimental approach |

Cross-Links

• [HDAC1 Protein](/proteins/hdac1-protein)
• [Alzheimer's Disease](/diseases/alzheimers-disease)
• [Parkinson's Disease](/diseases/parkinsons-disease)
• [Huntington's Disease](/diseases/huntingtons)
• [Epigenetic Regulation Pathway](/mechanisms/epigenetic-regulation)

Background

The study of Hdac1 Gene has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.

Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.

See Also

• [Alzheimer's Disease](/diseases/alzheimers-disease)
• [Amyloid Hypothesis](/mechanisms/amyloid-hypothesis)
• [Tau Pathology](/mechanisms/tau-pathology)
• [Parkinson's Disease](/diseases/parkinsons-disease)
• [Alpha-Synuclein](/mechanisms/alpha-synuclein)

References

[@grunstein1997]: Grunstein M. (1997). Histone acetylation in chromatin structure and transcription. Nature. PMID: 9062186(https://pubmed.ncbi.nlm.nih.gov/9062186/)
[@haberland2009]: Haberland M et al. (2009). The many roles of histone deacetylases in development and physiology. Nat Rev Genet. PMID: 19153538(https://pubmed.ncbi.nlm.nih.gov/19153538/)
[@xu2011]: Xu K et al. (2011). HDAC1 and HDAC2 in the nervous system: key regulators of neural development and function. Mol Neurobiol. PMID: 21979570(https://pubmed.ncbi.nlm.nih.gov/21979570/)
[@janczura2018]: Janczura KJ et al. (2018). HDAC activity is required for proper learning and memory in mice. Learn Mem. PMID: 29559789(https://pubmed.ncbi.nlm.nih.gov/29559789/)
[@chen2022]: Chen X et al. (2022). HDAC inhibitors as therapeutic agents in neurodegenerative diseases. Front Cell Neurosci. PMID: 35686123(https://pubmed.ncbi.nlm.nih.gov/35686123/)

External Links

• [NCBI Gene: HDAC1](https://www.ncbi.nlm.nih.gov/gene/3065)
• [UniProt: Q13547](https://www.uniprot.org/uniprot/Q13547)
• [OMIM: 601241](https://www.omim.org/entry/601241)

References

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Pathway Diagram

The following diagram shows the key molecular relationships involving HDAC1 Gene discovered through SciDEX knowledge graph analysis: