Serotonin 5-HT7 Receptor Neurons

Serotonin 5-HT7 Receptor Neurons

Introduction

<table class="infobox infobox-cell">
<tr>
<th class="infobox-header" colspan="2">Serotonin 5-HT7 Receptor Neurons</th>
</tr>
<tr>
<td class="label">Category</td>
<td>Serotonin Receptor Neurons</td>
</tr>
<tr>
<td class="label">Location</td>
<td>Thalamus, Hypothalamus, Hippocampus, Cerebral Cortex</td>
</tr>
<tr>
<td class="label">Receptor Type</td>
<td>5-HT7 (HTR7 gene)</td>
</tr>
<tr>
<td class="label">Signaling</td>
<td>Gs-coupled, increases cAMP</td>
</tr>
<tr>
<td class="label">Expression</td>
<td>Neurons, astrocytes, microglia</td>
</tr>
<tr>
<td class="label">Database</td>
<td>ID</td>
</tr>
<tr>
<td class="label">Cell Ontology</td>
<td>[CL:0000197](https://www.ebi.ac.uk/ols4/ontologies/cl/classes/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FCL_0000197)</td>
</tr>
<tr>
<td class="label">Taxonomy</td>
<td>ID</td>
</tr>
<tr>
<td class="label">Cell Ontology (CL)</td>
<td>[CL:0000197](https://www.ebi.ac.uk/ols4/ontologies/cl/classes/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FCL_0000197)</td>
</tr>
</table>

Serotonin 5 Ht7 Receptor Neurons is an important cell type in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

Serotonin 5-HT7 Receptor Neurons

Introduction

<table class="infobox infobox-cell">
<tr>
<th class="infobox-header" colspan="2">Serotonin 5-HT7 Receptor Neurons</th>
</tr>
<tr>
<td class="label">Category</td>
<td>Serotonin Receptor Neurons</td>
</tr>
<tr>
<td class="label">Location</td>
<td>Thalamus, Hypothalamus, Hippocampus, Cerebral Cortex</td>
</tr>
<tr>
<td class="label">Receptor Type</td>
<td>5-HT7 (HTR7 gene)</td>
</tr>
<tr>
<td class="label">Signaling</td>
<td>Gs-coupled, increases cAMP</td>
</tr>
<tr>
<td class="label">Expression</td>
<td>Neurons, astrocytes, microglia</td>
</tr>
<tr>
<td class="label">Database</td>
<td>ID</td>
</tr>
<tr>
<td class="label">Cell Ontology</td>
<td>[CL:0000197](https://www.ebi.ac.uk/ols4/ontologies/cl/classes/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FCL_0000197)</td>
</tr>
<tr>
<td class="label">Taxonomy</td>
<td>ID</td>
</tr>
<tr>
<td class="label">Cell Ontology (CL)</td>
<td>[CL:0000197](https://www.ebi.ac.uk/ols4/ontologies/cl/classes/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FCL_0000197)</td>
</tr>
</table>

Serotonin 5 Ht7 Receptor Neurons is an important cell type in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

5-HT7 is an excitatory serotonin receptor involved in mood, sleep, circadian rhythms, and increasingly recognized in neurodegenerative disease pathophysiology. [@guscott2005]

Overview

<!-- multi-taxonomy-enrichment -->

<!-- taxonomy-enrichment -->

Taxonomy & Classification

External Database Links

• [Cell Ontology (CL:0000197)](https://www.ebi.ac.uk/ols4/ontologies/cl/classes/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FCL_0000197)
• [OBO Foundry (CL:0000197)](http://purl.obolibrary.org/obo/CL_0000197)
• [Allen Brain Cell Atlas](https://portal.brain-map.org/atlases-and-data/bkp/abc-atlas)
• [CellxGene Census](https://cellxgene.cziscience.com/)

Multi-Taxonomy Classification

Taxonomy Database Cross-References

External Database Links

• [Cell Ontology (CL:0000197)](https://www.ebi.ac.uk/ols4/ontologies/cl/classes/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FCL_0000197)
• [OBO Foundry (CL:0000197)](http://purl.obolibrary.org/obo/CL_0000197)
• [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/)

Molecular Properties

Receptor Structure

• Gene: HTR7
• Isoforms: 5-HT7A, 7B, 7C, 7D
• G protein: Gs/olf
• Second messenger: Adenylyl cyclase → cAMP ↑

Distribution in Brain

• Thalamus: Sensory relay nuclei, involved in arousal
• Hypothalamus: Suprachiasmatic nucleus (SCN), circadian entrainment
• Hippocampus: CA1, CA3 regions, memory formation
• Cortex: Layer 5 pyramidal neurons
• Brainstem: Dorsal raphe nucleus (serotonergic neuron modulation)

Functions

Circadian Rhythm Regulation

• SCN entrainment: Mediates light-induced phase shifts
• Sleep-wake cycles: Promotes wakefulness
• Seasonal rhythm: Modulates seasonal affective responses
• Melatonin secretion: Indirect regulation via SCN

Mood and Cognition

• Antidepressant effects: Rapid-acting antidepressant target
• Anxiety modulation: Bidirectional effects depending on brain region
• Memory formation: Hippocampal LTPmechanisms/long-term-potentiation) facilitation
• Cognitive flexibility: Prefrontal cortex function

Clinical Significance in Neurodegeneration

Alzheimer's Disease

• Amyloid interaction: 5-HT7 activation may modulate amyloid precursor protein (APP) processing
• Tau pathology: Receptor signaling affects tau phosphorylation through cAMP/PKA pathways
• Cognitive decline: Loss of 5-HT7 receptors correlates with cognitive impairment
• Therapeutic potential: 5-HT7 agonists (e.g., AS-19, LP-211) show promise in preclinical AD models
• Neuroinflammation: Modulates microglial activation and neuroinflammatory responses

Parkinson's Disease

• Motor function: 5-HT7 activation may counteract L-DOPA-induced dyskinesias
• Non-motor symptoms: Depression and sleep disorders in PD linked to 5-HT7 dysfunction
• Neuroprotection: Agonists show neuroprotective effects in dopaminergic neurons
• Alpha-synuclein: May influence aggregation dynamics

Other Neurodegenerative Conditions

• Multiple System Atrophy (MSA): Altered 5-HT7 expression in pontine nuclei
• Progressive Supranuclear Palsy (PSP): Receptor changes in the basal ganglia
• Frontotemporal Dementia (FTD): Cortical 5-HT7 alterations

Therapeutic Implications

Agonists

• AS-19: Selective 5-HT7 agonist, preclinical neuroprotection
• LP-211: Brain-penetrant agonist, cognitive enhancement
• E-55888: Novel agonist with antidepressant effects

Antagonists

• SB-269970: Research tool compound
• SB-258719: Selective antagonist

Clinical Development

• Depression: Rapid-acting antidepressant potential
• Cognitive impairment: Adjunct therapy in dementia
• Sleep disorders: Circadian rhythm normalization

Research Methods

Experimental Models

• Knockout mice: HTR7-/- mice show circadian rhythm disturbances
• Transgenic models: 5-HT7 overexpression in AD models
• In vitro: Neuronal cultures, brain slices

Imaging

• PET ligands: 11CCUMI-101 for 5-HT7 visualization
• Autoradiography: 3H5-CT binding studies
• Serotonin 5-HT1A Receptor Neurons
• Serotonin Neurotransmission
• Serotonin Receptors
• Alzheimer's Disease Mechanisms
• Parkinson's Disease Mechanisms

External Links

• [Wikipedia: Serotonin receptor](https://en.wikipedia.org/wiki/Serotonin_receptor)
• [IUPHAR: 5-HT7 receptor](https://www.guidetopharmacology.org/GRID/GRID8)
• [UniProt: HTR7](https://www.uniprot.org/uniprot/P50405)

Background

The study of Serotonin 5 Ht7 Receptor 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.

Pathway Diagram

Pathway Diagram

The following diagram shows the key molecular relationships involving Serotonin 5-HT7 Receptor Neurons discovered through SciDEX knowledge graph analysis: