Glutamate receptor ionotropic kainate 1 (GRIK1)

Glutamate receptor ionotropic kainate 1 (GRIK1), also known as GluK1, is a subunit of the ionotropic kainate-type glutamate receptors that mediate fast excitatory neurotransmission in the central nervous system (UniProt: P39086). These receptors function as ligand-gated ion channels, allowing the influx of cations like sodium and calcium upon glutamate binding, thereby modulating neuronal excitability and synaptic plasticity (PubMed: 12835349). GRIK1 is particularly significant for its role in regulating both excitatory and inhibitory signaling, as it is located on both presynaptic and postsynaptic membranes in regions such as the hippocampus and dorsal horn of the spinal cord (PubMed: 16835367). Dysregulation of GRIK1 is implicated in various neurological and psychiatric conditions, including epilepsy, chronic pain, and alcohol dependence (PubMed: 24612593). Consequently, GRIK1 has emerged as a therapeutic target, with antagonists like LY466195 and tezampanel being explored for their potential to treat migraines and seizure disorders by dampening pathological neuronal firing (PubMed: 16835367). Additionally, the anticonvulsant drug topiramate acts as a non-selective antagonist at this receptor, contributing to its clinical efficacy in treating epilepsy and preventing migraines (PubMed: 12835349).

Other names

GluK1GluR5EAA3Glutamate receptor 5Excitatory amino acid receptor 3

Antagonism of the ionotropic receptor to reduce excitatory neurotransmission and stabilize neuronal membranes.