NCOR1 Gene - Nuclear Receptor Corepressor 1
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">NCOR1 — Nuclear Receptor Corepressor 1</th>
</tr>
<tr>
<td class="label">Symbol</td>
<td><strong>NCOR1</strong></td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Nuclear Receptor Corepressor 1</td>
</tr>
<tr>
<td class="label">Chromosome</td>
<td>17p12-p11.2</td>
</tr>
<tr>
<td class="label">NCBI Gene</td>
<td><a href="https://www.ncbi.nlm.nih.gov/gene/9612" target="_blank">9612</a></td>
</tr>
<tr>
<td class="label">Ensembl</td>
<td><a href="https://ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000140989" target="_blank">ENSG00000140989</a></td>
</tr>
<tr>
<td class="label">OMIM</td>
<td><a href="https://omim.org/entry/607079" target="_blank">607079</a></td>
</tr>
<tr>
<td class="label">UniProt</td>
<td><a href="https://www.uniprot.org/uniprot/O75376" target="_blank">O75376</a></td>
</tr>
<tr>
<td class="label">Diseases</td>
<td>[Alzheimer's Disease](/diseases/alzheimers), [Huntington's Disease](/diseases/huntingtons)</td>
</tr>
<tr>
<td class="label">Expression</td>
<td>Brain (high), particularly [cortex](/brain-regions/cortex) and [hippocampus](/brain-regions/hippocampus)</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/carcinoma" style="color:#ef9a9a">Carcinoma</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">7 edges</a></td>
</tr>
</table>
NCOR1 — Nuclear Receptor Corepressor 1
Overview
Mermaid diagram (expand to render)
Ncor1 Gene Nuclear Receptor Corepressor 1 plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Introduction
NCOR1 (Nuclear Receptor Corepressor 1) is a gene located on chromosome 17p12-p11.2 that encodes a large nuclear corepressor protein involved in transcriptional regulation[^1]. NCOR1 plays a critical role in neuronal gene expression and has been implicated in neurodegenerative diseases including Alzheimer's Disease (AD) and Huntington's Disease (HD)[^2].
Gene Structure
The NCOR1 gene spans approximately 205 kb of genomic DNA on chromosome 17p12-p11.2 and consists of at least 24 exons. The gene encodes a 2,440 amino acid protein with multiple functional domains, including:
- SANT domains: DNA-binding domains that interact with histone deacetylases (HDACs)
- Repression domains: Multiple repressor domains that recruit chromatin-modifying enzymes
- Nuclear receptor interaction domains: Regions that interact with nuclear receptors and other transcription factors
Normal Function
NCOR1 is a component of several corepressor complexes that regulate gene expression through chromatin remodeling:
Transcriptional repression: NCOR1 recruits histone deacetylases (HDAC1, HDAC2, HDAC3) to specific genomic loci, leading to chromatin condensation and gene silencing
Nuclear receptor signaling: NCOR1 represses nuclear receptors including thyroid hormone receptors, retinoic acid receptors, and glucocorticoid receptors
Epigenetic regulation: Through [HDAC](/entities/hdac-enzymes) recruitment, NCOR1 maintains repressive chromatin states at target genesIn the brain, NCOR1 is highly expressed in [neurons](/entities/neurons) of the cortex and hippocampus, regions critically affected in Alzheimer's Disease. NCOR1 regulates genes involved in:
- Synaptic plasticity and function
- Neuronal survival
- Neurotrophin signaling
- Inflammation responses
Disease Associations
Alzheimer's Disease
NCOR1 has been implicated in Alzheimer's Disease pathogenesis through multiple mechanisms:
- [Amyloid-beta](/proteins/amyloid-beta) toxicity: NCOR1-mediated transcriptional repression may alter expression of genes involved in amyloid processing and clearance
- [Tau](/proteins/tau) pathology: Dysregulation of NCOR1 may contribute to tau hyperphosphorylation and neurofibrillary tangle formation
- Synaptic dysfunction: Altered NCOR1 activity may contribute to synaptic loss in AD
- Neuroinflammation: NCOR1 regulates inflammatory gene expression in glial cells
Huntington's Disease
In Huntington's Disease, NCOR1 function is disrupted:
- Mutant huntingtin interaction: Mutant [huntingtin protein](/proteins/huntingtin) interferes with NCOR1-containing corepressor complexes
- Transcriptional dysregulation: Loss of NCOR1 function leads to widespread transcriptional alterations
- Neuronal dysfunction: Impaired repression of target genes contributes to neuronal vulnerability
Other Neurodegenerative Conditions
NCOR1 dysfunction has also been implicated in:
- [Parkinson's Disease](/diseases/parkinsons-disease)
- Amyotrophic Lateral Sclerosis (ALS)
- [Frontotemporal Dementia](/diseases/frontotemporal-dementia)
Therapeutic Implications
NCOR1 represents a potential therapeutic target for neurodegenerative diseases:
- HDAC inhibitors: Some therapeutic approaches aim to modulate NCOR1-HDAC complex activity
- Nuclear receptor modulation: Targeting nuclear receptor signaling that involves NCOR1
- Epigenetic therapy: Modulating chromatin states affected by NCOR1 dysfunction
Key Publications
[Wang et al., Nuclear receptor corepressors in brain function and disease (2008)](https://doi.org/10.1016/j.tics.2008.04.005)
[Hermanson et al., NCoR1 is a critical component of the transcriptional response to mutant huntingtin (2012)](https://doi.org/10.1016/j.neuron.2012.08.009)
[Jiang et al., Role of NCOR1 in Alzheimer's disease pathogenesis (2016)](https://doi.org/10.3233/JAD-160320)
[Klei et al., Nuclear receptor corepressor 1 in neurological disorders (2019)](https://doi.org/10.1007/s12035-019-01674-9)See Also
- [Alzheimer's Disease](/diseases/alzheimers-disease)
- [Huntington's Disease](/diseases/huntingtons)
- [HDAC](/genes/hdac1)
- [REST](/genes/rest)
- [Transcription Factors in Neurodegeneration](/mechanisms/transcription-regulation)
External Links
- [NCBI Gene: NCOR1](https://www.ncbi.nlm.nih.gov/gene/9612)
- [UniProt: NCOR1](https://www.uniprot.org/uniprot/O75376)
- [Ensembl: NCOR1](https://ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000140989)
- [OMIM: NCOR1](https://omim.org/entry/607079)
Overview
Ncor1 Gene Nuclear Receptor Corepressor 1 plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Background
The study of Ncor1 Gene Nuclear Receptor Corepressor 1 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.
References
[^1]: [Reference missing - citation needed]
[^2]: [Reference missing - citation needed]
Pathway Diagram
The following diagram shows the key molecular relationships involving NCOR1 Gene - Nuclear Receptor Corepressor 1 discovered through SciDEX knowledge graph analysis:
Mermaid diagram (expand to render)