GluK2 Kainate Receptor Neurons

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GluK2 Kainate Receptor Neurons

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GluK2 Kainate Receptor Neurons

Introduction

<table class="infobox infobox-cell">
<tr>
<th class="infobox-header" colspan="2">GluK2 Kainate 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>
<tr>
<td class="label">Receptor Type</td>
<td>GluK2 (GRIK2, KAR2)</td>
</tr>
<tr>
<td class="label">Family</td>
<td>Ionotropic glutamate (kainate receptor)</td>
</tr>
<tr>
<td class="label">Signaling Mechanism</td>
<td>Ligand-gated ion channel, Ca2+ permeable (unedited)</td>
</tr>
<tr>
<td class="label">Primary Location</td>
<td>Hippocampus, cortex, amygdala</td>
</tr>
<tr>
<td class="label">Structure</td>
<td>Homomeric or heteromeric with GluK3/GluK5</td>
</tr>
<tr>
<td class="label">Calcium Permeability</td>
<td>High (Q/R unedited)</td>
</tr>
<tr>
<td class="label">Receptor Type</td>
<td>Composition</td>
</tr>
<tr>
<td class="label">GluK2 homomer</td>
<td>GluK2 × 4</td>
</tr>
<tr>
<td class="label">GluK2/K3</td>
<td>GluK2 + GluK3</td>
</tr>
<tr>
<td class="label">GluK2/K5</td>
<td>GluK2 + GluK5</td>
</tr>
<tr>
<td class="label">Region</td>
<td>GluK2 Expression</td>
</tr>
<tr>
<td class="label">Hippocampus CA3</td>
<td>High</td>
</tr>
<tr>
<td class="label">Cerebral cortex</td>
<td>H

...

GluK2 Kainate Receptor Neurons

Introduction

<table class="infobox infobox-cell">
<tr>
<th class="infobox-header" colspan="2">GluK2 Kainate 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>
<tr>
<td class="label">Receptor Type</td>
<td>GluK2 (GRIK2, KAR2)</td>
</tr>
<tr>
<td class="label">Family</td>
<td>Ionotropic glutamate (kainate receptor)</td>
</tr>
<tr>
<td class="label">Signaling Mechanism</td>
<td>Ligand-gated ion channel, Ca2+ permeable (unedited)</td>
</tr>
<tr>
<td class="label">Primary Location</td>
<td>Hippocampus, cortex, amygdala</td>
</tr>
<tr>
<td class="label">Structure</td>
<td>Homomeric or heteromeric with GluK3/GluK5</td>
</tr>
<tr>
<td class="label">Calcium Permeability</td>
<td>High (Q/R unedited)</td>
</tr>
<tr>
<td class="label">Receptor Type</td>
<td>Composition</td>
</tr>
<tr>
<td class="label">GluK2 homomer</td>
<td>GluK2 × 4</td>
</tr>
<tr>
<td class="label">GluK2/K3</td>
<td>GluK2 + GluK3</td>
</tr>
<tr>
<td class="label">GluK2/K5</td>
<td>GluK2 + GluK5</td>
</tr>
<tr>
<td class="label">Region</td>
<td>GluK2 Expression</td>
</tr>
<tr>
<td class="label">Hippocampus CA3</td>
<td>High</td>
</tr>
<tr>
<td class="label">Cerebral cortex</td>
<td>High</td>
</tr>
<tr>
<td class="label">Amygdala</td>
<td>High</td>
</tr>
<tr>
<td class="label">Striatum</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Cerebellum</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Brainstem</td>
<td>Low</td>
</tr>
<tr>
<td class="label">Agent</td>
<td>Mechanism</td>
</tr>
<tr>
<td class="label">UBP-310</td>
<td>GluK2/3 antagonist</td>
</tr>
<tr>
<td class="label">LY377</td>
<td>GluK2 selective</td>
</tr>
<tr>
<td class="label">Concanavalin A</td>
<td>Increase desensitization</td>
</tr>
</table>

Gluk2 Kainate 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

Mermaid diagram (expand to render)

GluK2 Kainate Receptor Neurons are neurons expressing the GluK2 (KAR2) receptor, a member of the Ionotropic glutamate receptor family. These receptor neurons play crucial roles in excitatory signaling, synaptic integration and are implicated in various neurological and neurodegenerative conditions. [@ionotropic]

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/)

Receptor Properties

Function

GluK2 Kainate Receptor Neurons are neurons expressing the [GluK2 receptor](/entities/grik2), a major subunit of the [Ionotropic glutamate receptor](/mechanisms/glutamate-receptors) family (kainate receptor subclass). These receptor neurons play crucial roles in [excitatory signaling](/mechanisms/excitotoxicity), [synaptic integration](/mechanisms/synaptic-integration), [epileptogenesis](/diseases/epilepsy), and are implicated in [Alzheimer's disease](/diseases/alzheimers-disease), [Parkinson's disease](/diseases/parkinsons-disease), [ALS](/diseases/amyotrophic-lateral-sclerosis), and [depression](/diseases/depression-neurodegeneration).

Ion Channel Properties

GluK2 receptors conduct sodium (Na+), potassium (K+), and calcium (Ca2+):

Single-channel conductance: 10-20 pS
Q/R editing site: Site Q/R in TMD2 — editing reduces Ca2+ permeability
Desensitization: Slow, incomplete recovery
RNA editing: ADAR2-mediated Q/R editing reduced in some diseases

Subunit Combinations

Distribution in Brain

Disease Implications

GluK2 receptor neurons are implicated in several conditions:

Alzheimer's Disease

[Calcium dysregulation](/mechanisms/calcium-dysregulation-alzheimers): High Ca2+ influx via GluK2
[Synaptic dysfunction](/mechanisms/synaptic-dysfunction-pathway): Aβ alters GluK2 trafficking
[Excitotoxicity](/mechanisms/excitotoxicity): Enhanced Ca2+-mediated toxicity
[Hippocampal CA3](/brain-regions/hippocampus): Vulnerable to Aβ-induced GluK2 dysregulation

Parkinson's Disease

[Striatal signaling](/brain-regions/striatum): GluK2 modulates dopaminergic circuits
[Excitotoxicity](/mechanisms/excitotoxicity): Enhanced in PD models
[Subthalamic nucleus](cell-types/subthalamic-nucleus): High GluK2 expression

Amyotrophic Lateral Sclerosis (ALS)

[Motor neuron vulnerability](/diseases/amyotrophic-lateral-sclerosis): GluK2 changes in motor neurons
[Excitotoxicity hypothesis](/mechanisms/excitotoxicity): kainate receptor involvement
[Riluzole interactions](/therapeutics/riluzole): Known to affect kainate receptors

Depression

[Hippocampal plasticity](/mechanisms/synaptic-plasticity): GluK2 in mood regulation
[Fast-spiking interneurons](/cell-types/parvalbumin-interneurons): GluK2 in inhibition

Epilepsy

[Seizure genesis](/diseases/epilepsy): Unedited GluK2 increases seizure susceptibility
[Q/R editing deficit](/mechanisms/rna-editing-deficit): Reduced editing in epileptic tissue
[Kindling](/mechanisms/kindling-epilepsy): GluK2 plasticity in epileptogenesis

Therapeutic Targets

GluK2 Receptor Modulators

Q/R Editing as Target

Enhance editing: Upregulate ADAR2 to reduce Ca2+ permeability
Gene therapy: Increase GluK2 Q/R ratio
Small molecules: Editing enhancers in development

Clinical Applications

Epilepsy: GluK2 antagonists reduce seizure activity
Neuroprotection: Block excessive Ca2+ influx
Mood disorders: Modulation of hippocampal circuits

Background

The study of Gluk2 Kainate 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

[PubMed](https://pubmed.ncbi.nlm.nih.gov/) - Biomedical literature
[Alzheimer's Disease Neuroimaging Initiative](https://adni.loni.usc.edu/) - Research data
[Allen Brain Atlas](https://brain-map.org/) - Brain gene expression data

Pathway Diagram

The following diagram shows the key molecular relationships involving GluK2 Kainate Receptor Neurons discovered through SciDEX knowledge graph analysis:

Mermaid diagram (expand to render)

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Related Entities

cell-types-gluk2-kainate-receptor-neurons

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📊 Evidence Profile Foundational

Evidence Balance

+0%

Certainty

90%

Debates

0

Incoming

18

Outgoing

22

0 supporting 0 contradicting 0 neutral

View full evidence profile →

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📗 Cite This Artifact

GluK2 Kainate Receptor Neurons

GluK2 Kainate Receptor Neurons

Introduction

GluK2 Kainate Receptor Neurons

Introduction

Overview

Multi-Taxonomy Classification

Taxonomy Database Cross-References

External Database Links

Receptor Properties

Function

Ion Channel Properties

Subunit Combinations

Distribution in Brain

Disease Implications

Alzheimer's Disease

Parkinson's Disease

Amyotrophic Lateral Sclerosis (ALS)

Depression

Epilepsy

Therapeutic Targets

GluK2 Receptor Modulators

Q/R Editing as Target

Clinical Applications

See Also

Background

External Links

Pathway Diagram

💬 Discussion