Tuberomammillary Histaminergic Neurons
<table class="infobox infobox-celltype">
<tr>
<th class="infobox-header" colspan="2">Tuberomammillary Histaminergic Neurons</th>
</tr>
<tr>
<td class="label">Allen Atlas ID</td>
<td><a href="https://portal.brain-map.org/atlases-and-data/rnaseq" target="_blank">CS202210140_3482</a></td>
</tr>
<tr>
<td class="label">Lineage</td>
<td>Neuron > Histaminergic > Hypothalamic</td>
</tr>
<tr>
<td class="label">Markers</td>
<td>HDC, SLC22A3, SLC22A2, GABA, TAC1</td>
</tr>
<tr>
<td class="label">Brain Regions</td>
<td>Tuberomammillary nucleus, Posterior hypothalamus</td>
</tr>
<tr>
<td class="label">Disease Vulnerability</td>
<td>[Alzheimer's Disease](/diseases/alzheimers-disease), Narcolepsy, [Parkinson's Disease](/diseases/parkinsons-disease)</td>
</tr>
</table>
Tuberomammillary Histaminergic Neurons
Introduction
Tuberomammillary Histaminergic Neurons is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Overview
...Tuberomammillary Histaminergic Neurons
<table class="infobox infobox-celltype">
<tr>
<th class="infobox-header" colspan="2">Tuberomammillary Histaminergic Neurons</th>
</tr>
<tr>
<td class="label">Allen Atlas ID</td>
<td><a href="https://portal.brain-map.org/atlases-and-data/rnaseq" target="_blank">CS202210140_3482</a></td>
</tr>
<tr>
<td class="label">Lineage</td>
<td>Neuron > Histaminergic > Hypothalamic</td>
</tr>
<tr>
<td class="label">Markers</td>
<td>HDC, SLC22A3, SLC22A2, GABA, TAC1</td>
</tr>
<tr>
<td class="label">Brain Regions</td>
<td>Tuberomammillary nucleus, Posterior hypothalamus</td>
</tr>
<tr>
<td class="label">Disease Vulnerability</td>
<td>[Alzheimer's Disease](/diseases/alzheimers-disease), Narcolepsy, [Parkinson's Disease](/diseases/parkinsons-disease)</td>
</tr>
</table>
Tuberomammillary Histaminergic Neurons
Introduction
Tuberomammillary Histaminergic Neurons is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Overview
Mermaid diagram (expand to render)
Tuberomammillary Histaminergic Neurons are a specialized cell type classified within the Neuron > Histaminergic > Hypothalamic lineage. These cells are primarily found in Tuberomammillary nucleus, Posterior hypothalamus and are characterized by expression of marker genes including HDC, SLC22A3, SLC22A2, GABA. They are selectively vulnerable in Alzheimer's Disease, Narcolepsy, Parkinson's Disease.
<!-- multi-taxonomy-enrichment -->
Multi-Taxonomy Classification
Taxonomy Database Cross-References
| Taxonomy | ID | Name / Label |
|----------|----|---------------|
| Cell Ontology (CL) | [CL:0011110](https://www.ebi.ac.uk/ols4/ontologies/cl/classes/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FCL_0011110) | histaminergic neuron |
Morphology & Electrophysiology
- Morphology: histaminergic neuron (source: Cell Ontology)
- Morphology can be inferred from Cell Ontology classification
External Database Links
- [Cell Ontology (CL:0011110)](https://www.ebi.ac.uk/ols4/ontologies/cl/classes/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FCL_0011110)
- [OBO Foundry (CL:0011110)](http://purl.obolibrary.org/obo/CL_0011110)
- [Allen Brain Cell Atlas](https://portal.brain-map.org/atlases-and-data/bkp/abc-atlas)
- [CellxGene Census](https://cellxgene.cziscience.com/)
- [Human Cell Atlas](https://www.humancellatlas.org/)
Morphology and Markers
Tuberomammillary Histaminergic Neurons are identified by the expression of the following key marker genes:
- HDC
- SLC22A3
- SLC22A2
- GABA
- TAC1
These markers are used for immunohistochemical identification and single-cell RNA sequencing classification, as catalogued in the [Allen Cell Type Atlas](https://portal.brain-map.org/atlases-and-data/rnaseq).
Normal Function
Tuberomammillary Histaminergic Neurons play essential roles in neural circuits and brain function. They are found in the following brain regions:
- Tuberomammillary nucleus
- Posterior hypothalamus
Their normal functions include maintaining neural circuit integrity, signal processing, and contributing to the homeostasis of their local microenvironment.
Vulnerability in Disease
Tuberomammillary Histaminergic Neurons show selective vulnerability in the following neurodegenerative conditions:
- [Alzheimer's Disease](/diseases/alzheimers-disease)
- Narcolepsy
- [Parkinson's Disease](/diseases/parkinsons-disease)
The selective vulnerability of these cells is an active area of research, with factors including metabolic demands, calcium handling, exposure to toxic protein aggregates, and cell-autonomous gene expression programs contributing to their susceptibility.
Transcriptomic Profile
Single-cell and single-nucleus RNA sequencing studies have revealed the transcriptomic signature of Tuberomammillary Histaminergic Neurons. Key differentially expressed genes from the Allen Cell Type Atlas and related datasets include the marker genes listed above. These transcriptomic profiles help identify subtypes and disease-associated gene expression changes.
Key Publications
[Histaminergic system in sleep and neurodegeneration](https://doi.org/10.1038/s41583-022-00571-8). Nat Rev Neurosci, 2022.
External Links
- Allen Cell Type Atlas: [https://portal.brain-map.org/atlases-and-data/rnaseq](https://portal.brain-map.org/atlases-and-data/rnaseq)
- Allen Human Brain Atlas: [https://human.brain-map.org/](https://human.brain-map.org/)
- [Cell Types Index](/cell-types)- [Diseases Index](/diseases)eases Index
- [Mechanisms Index](/mechanisms) --
Background
The study of Tuberomammillary Histaminergic Neurons 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.