Glutamate ionotropic receptor AMPA type subunit 1 (GluR1) (GluR1)

The Glutamate ionotropic receptor AMPA type subunit 1 (GluR1), encoded by the GRIA1 gene, is a principal subunit of the alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor complex, which mediates the majority of fast excitatory synaptic transmission in the central nervous system [1.1.1, 1.2.1]. GluR1 is essential for activity-dependent synaptic plasticity, particularly long-term potentiation (LTP) in the hippocampus, which serves as a fundamental cellular mechanism for learning and memory [1.1.1, 1.3.4]. The trafficking and phosphorylation of GluR1 at the postsynaptic membrane are tightly regulated processes that determine synaptic strength and connectivity [1.1.1, 1.3.3]. Dysregulation of GluR1-mediated signaling is implicated in a wide range of neurological and psychiatric disorders, including epilepsy, schizophrenia, Alzheimer's disease, and chronic pain [1.1.2, 1.2.3, 1.4.3]. Pharmacological agents targeting this subunit include non-competitive antagonists like perampanel, used for seizure management, and positive allosteric modulators known as ampakines, which are being investigated for cognitive enhancement [1.3.1, 1.4.2]. However, therapeutic intervention must balance the modulation of synaptic strength with the risk of significant side effects, such as sedation, dizziness, and severe neuropsychiatric reactions [1.4.2, 1.4.5].

Other names

GluA1GRIA1GLUR1GLURAHBGR1GluR-AGluR-K1AMPA-selective glutamate receptor 1

Non-competitive AMPA receptor antagonism, Competitive AMPA receptor antagonism, Positive allosteric modulation of AMPA receptors