Htr7 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.
| Attribute | Value | [@monti2011] |-----------|-------| | Gene Symbol | HTR7 | | Full Name | 5-Hydroxytryptamine Receptor 7 | | Chromosomal Location | 10q21.3 | | NCBI Gene ID | [3363](https://www.ncbi.nlm.nih.gov/gene/3363) | | Ensembl ID | ENSG00000148680 | | UniProt ID | [P34969](https://www.uniprot.org/uniprot/P34969) | | Gene Family | 5-HT7 receptor family (GPCR) | | Protein Class | G protein-coupled receptor | | Brain Expression | Hippocampus, Hypothalamus, Cortex, Thalamus |
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Overview
The HTR7 gene encodes the 5-hydroxytryptamine receptor 7 (5-HT7), a G protein-coupled receptor (GPCR) that plays crucial roles in circadian rhythm regulation, sleep-wake cycles, mood, and cognitive function. The 5-HT7 receptor is unique among serotonin receptors as it primarily couples to Gs proteins, increasing cAMP levels. This receptor has emerged as a therapeutic target for depression, sleep disorders, and potentially for neurodegenerative diseases including Alzheimer's and Parkinson's disease.
Molecular Function
Receptor Signaling
The 5-HT7 receptor exhibits distinctive pharmacological and signaling properties:
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htr7 Gene
Introduction
Htr7 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.
| Attribute | Value | [@monti2011] |-----------|-------| | Gene Symbol | HTR7 | | Full Name | 5-Hydroxytryptamine Receptor 7 | | Chromosomal Location | 10q21.3 | | NCBI Gene ID | [3363](https://www.ncbi.nlm.nih.gov/gene/3363) | | Ensembl ID | ENSG00000148680 | | UniProt ID | [P34969](https://www.uniprot.org/uniprot/P34969) | | Gene Family | 5-HT7 receptor family (GPCR) | | Protein Class | G protein-coupled receptor | | Brain Expression | Hippocampus, Hypothalamus, Cortex, Thalamus |
</div>}
Overview
The HTR7 gene encodes the 5-hydroxytryptamine receptor 7 (5-HT7), a G protein-coupled receptor (GPCR) that plays crucial roles in circadian rhythm regulation, sleep-wake cycles, mood, and cognitive function. The 5-HT7 receptor is unique among serotonin receptors as it primarily couples to Gs proteins, increasing cAMP levels. This receptor has emerged as a therapeutic target for depression, sleep disorders, and potentially for neurodegenerative diseases including Alzheimer's and Parkinson's disease.
Molecular Function
Receptor Signaling
The 5-HT7 receptor exhibits distinctive pharmacological and signaling properties:
G Protein Coupling: Primarily couples to Gs proteins, stimulating adenylate cyclase and increasing intracellular cAMP
Constitutive Activity: Shows significant basal activity in the absence of agonist
Second Messenger Pathways:
cAMP/PKA pathway activation
ERK1/2 MAPK pathway activation
PI3K/Akt pathway engagement
Structural Features
The receptor shares the classic seven-transmembrane domain structure of GPCRs:
N-terminal extracellular domain for ligand binding
Seven transmembrane helices (TM1-TM7)
Intracellular loops for G protein coupling
C-terminal intracellular domain for desensitization and trafficking
Expression Pattern
Brain Distribution
The 5-HT7 receptor shows widespread but specific distribution:
| Brain Region | Expression | Function | |--------------|------------|----------| | Hypothalamus | Very High | Circadian regulation, thermoregulation | | [Hippocampus](/brain-regions/hippocampus) | High | Memory, synaptic plasticity | | [Cortex](/brain-regions/cortex) | High | Cognition, mood | | Thalamus | High | Sensory processing | | Suprachiasmatic Nucleus | High | Circadian pacemaker | | Amygdala | Moderate | Emotional processing |
Combination Therapy: Synergy with existing antidepressants
Key Publications
PMID: 14657021(https://pubmed.ncbi.nlm.nih.gov/14657021/) - 5-HT7 receptor: a key player in circadian rhythm
PMID: 15852389(https://pubmed.ncbi.nlm.nih.gov/15852389/) - Antidepressant-like effects of 5-HT7 antagonists
PMID: 20091054(https://pubmed.ncbi.nlm.nih.gov/20091054/) - 5-HT7 receptors in sleep-wake regulation
Background
The study of Htr7 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.
Allen Brain Atlas Resources
Expression data for HTR7 in the human brain can be explored through the following Allen Brain Atlas resources:
[Allen Human Brain Atlas - HTR7 Expression](https://human.brain-map.org/microarray/search/show?search_term=HTR7): Gene expression data across brain regions
[BrainSpan Atlas of the Developing Human Brain](https://brainspan.org/): Developmental expression patterns for HTR7
[Hedlund PB, Sutcliffe JG, The 5-HT7 receptor influences stereotypic behavior in rats (2004)](https://pubmed.ncbi.nlm.nih.gov/14657021/)
[Unknown, WesoĊowska A. In vitro and in vivo characterization of the 5-HT7 receptor antagonist SB-269970. Pol J Pharmacol. 2004;56(1):49-55. <br> (2004)](https://pubmed.ncbi.nlm.nih.gov/15852389/)
[Monti JM, The role of dorsal raphe nucleus serotonergic and non-serotonergic neurons (2011)](https://pubmed.ncbi.nlm.nih.gov/20091054/)