NPY-Y2 Receptor Neurons

NPY-Y2 Receptor Neurons

Introduction

<table class="infobox infobox-cell">
<tr>
<th class="infobox-header" colspan="2">NPY-Y2 Receptor Neurons</th>
</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>

Npy Y2 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.

Overview

Neurons expressing neuropeptide Y receptor 2 (NPY2R) represent a key component of the neuropeptide Y (NPY) signaling system in the brain. NPY2R has distinct pharmacological properties from NPY1R, with different tissue distribution and signaling mechanisms. These receptors are particularly important for regulating feeding behavior, energy homeostasis, and stress responses, making them attractive targets for metabolic and neurological disorder therapies. [@npyr2019]

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

Multi-Taxonomy Classification

Taxonomy Database Cross-References

External Database Links

NPY-Y2 Receptor Neurons

Introduction

<table class="infobox infobox-cell">
<tr>
<th class="infobox-header" colspan="2">NPY-Y2 Receptor Neurons</th>
</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>

Npy Y2 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.

Overview

Neurons expressing neuropeptide Y receptor 2 (NPY2R) represent a key component of the neuropeptide Y (NPY) signaling system in the brain. NPY2R has distinct pharmacological properties from NPY1R, with different tissue distribution and signaling mechanisms. These receptors are particularly important for regulating feeding behavior, energy homeostasis, and stress responses, making them attractive targets for metabolic and neurological disorder therapies. [@npyr2019]

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

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/)

Location

NPY2R-expressing neurons are distributed across several brain regions: [@neuropeptide2016]

• Hypothalamus: Arcuate nucleus and paraventricular nucleus, critical for energy balance
• Hippocampus: Dentate gyrus and CA regions, involved in memory and plasticity
• Brainstem: Nucleus tractus solitarius (NTS), regulating autonomic functions
• Cortex: Layer-specific expression in cerebral cortex
• Amygdala: Modulating emotional responses
• Olfactory bulb: Regulating olfactory processing

Molecular Characteristics

NPY2R is a 39-kDa GPCR with distinct properties: [@npy2018]

• Couples to Gi/o proteins, inhibiting adenylate cyclase
• Exhibits high affinity for NPY and PYY, but not PP
• Undergoes rapid internalization upon agonist binding
• Heterodimerization with NPY1R modifies pharmacology
• Species differences in receptor pharmacology exist

Function

Energy Homeostasis

• Mediates satiety signals from peripheral PYY
• Inhibits NPY/AgRP neurons in the arcuate nucleus
• Reduces food intake and body weight
• Modulates leptin and insulin signaling

Stress and Anxiety

• NPY2R signaling modulates anxiety-like behaviors
• Different role from NPY1R in stress responses
• Interacts with CRH and serotonin systems

Neurophysiology

• Modulates synaptic transmission
• Regulates neuronal excitability
• Influences hippocampal plasticity
• Controls autonomic outflow

Neuroprotection

• NPY2R activation can be neuroprotective
• Anti-apoptotic signaling mechanisms
• Modulation of inflammatory responses

Role in Disease

Alzheimer's Disease

• Altered NPY2R expression in AD brains
• Potential role in memory impairment
• Therapeutic target for cognitive enhancement

Parkinson's Disease

• NPY2R in basal ganglia circuitry
• Modulates dopaminergic signaling
• Possible role in non-motor symptoms

Obesity and Metabolic Syndrome

• NPY2R agonists reduce food intake
• PYY acts through NPY2R to induce satiety
• Target for anti-obesity drug development

Depression

• NPY2R involvement in mood disorders
• Polymorphisms associated with depression risk
• Novel antidepressant target

Epilepsy

• NPY2R has anti-convulsant properties
• Decreased expression in epileptic tissue
• Gene therapy applications

Therapeutic Targets

NPY2R is a validated drug target:

Agonists

• PYY analogs: PYY3-36, synthetic analogs
• Small molecule agonists: Under development
• Peptide-based therapeutics

Antagonists

• BIIE-0246: Research tool compound
• Selective antagonists: For metabolic disorders

Clinical Applications

• Obesity: NPY2R agonists for weight management
• Metabolic diseases: P therapies
• YY-basedNeurodegeneration: Neuroprotective strategies

Biomarkers

NPY2R as a biomarker:

• Genetic variants: NPY2R polymorphisms affect metabolic traits
• Expression studies: Peripheral NPY2R mRNA
• Functional imaging: Developing PET ligands

Background

The study of Npy Y2 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.

External Links

• [UniProt: NPY2R](https://www.uniprot.org/uniprot/P49146)
• [IUPHAR: NPY2R](https://www.guidetopharmacology.org/GRAC/receptorDisplayForward?receptorId=345)
• [PubMed](https://pubmed.ncbi.nlm.nih.gov/)
• [GeneCards: NPY2R](https://www.genecards.org/cgi-bin/carddisp.pl?gene=NPY2R)