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.
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. [1]
| Taxonomy | ID | Name / Label |
|---|---|---|
| Cell Ontology (CL) | CL:0000197 | sensory receptor cell |
| Property | Value | [2]
|----------|-------|
| Receptor Type | GluK2 (GRIK2, KAR2) |
| Family | Ionotropic glutamate (kainate receptor) |
| Signaling Mechanism | Ligand-gated ion channel, Ca2+ permeable (unedited) |
| Primary Location | Hippocampus, cortex, amygdala |
| Structure | Homomeric or heteromeric with GluK3/GluK5 |
| Calcium Permeability | High (Q/R unedited) |
GluK2 Kainate Receptor Neurons are neurons expressing the GluK2 receptor, a major subunit of the Ionotropic glutamate receptor family (kainate receptor subclass). These receptor neurons play crucial roles in excitatory signaling, synaptic integration, epileptogenesis, and are implicated in Alzheimer's disease, Parkinson's disease, ALS, and depression.
GluK2 receptors conduct sodium (Na+), potassium (K+), and calcium (Ca2+):
| Receptor Type | Composition | Properties |
|---|---|---|
| GluK2 homomer | GluK2 × 4 | High Ca2+ permeability |
| GluK2/K3 | GluK2 + GluK3 | Modulatory, low expression |
| GluK2/K5 | GluK2 + GluK5 | High affinity, most common |
| Region | GluK2 Expression | Functional Role |
|---|---|---|
| Hippocampus CA3 | High | Mossy fiber signaling |
| Cerebral cortex | High | Synaptic integration |
| Amygdala | High | Emotional processing |
| Striatum | Moderate | Motor control |
| Cerebellum | Moderate | Motor learning |
| Brainstem | Low | Autonomic regulation |
GluK2 receptor neurons are implicated in several conditions:
| Agent | Mechanism | Application |
|---|---|---|
| UBP-310 | GluK2/3 antagonist | Neuroprotection |
| LY377 | GluK2 selective | Epilepsy, pain |
| Concanavalin A | Increase desensitization | Research tool |
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.