Affecting AMPA Receptor Biophysical Gating Properties with Negative Allosteric Modulators
Publication Type
Original research

Glutamatergic chemical synapses mediate excitatory neurotransmission by the ion fow through α-amino-3-hydroxy-5-methyl4-isoxazole propionic acid (AMPA)-type glutamate receptors in the central nervous system (CNS). AMPA receptor-mediated synaptic transmission abnormalities may play a role in neurologic and neurodegenerative diseases, and compounds that can modulate AMPA receptor (AMPAR) signaling have been studied for decades as possible therapies for Alzheimer’s disease, Parkinson’s disease, depression, and epilepsy. Here, we aimed to determine the modulating efect of allosteric regulators on AMPA receptors by comparing their actions on AMPA-evoked currents, desensitization, and deactivation rate in human embryonic kidney cells (HEK293T) recombinant AMPAR subunits. In this study, patch-clamp electrophysiology was performed to examine how the AMPA subunit responded to benzodioxole (BDZ) derivatives. Our results showed that the BDZ derivatives afected AMPARs as negative modulators, particularly BDZs (8, 9, and 15), where they increased the desensitization rate and delayed the deactivation process. The BDZ compounds were utilized in this study as AMPA modulators to investigate fundamental and clinical AMPA receptor processes. We test BDZs as negative allosteric AMPAR modulators to reestablish glutamatergic synaptic transmission. These eforts have resulted in important molecules with neuroprotective properties on AMPA receptors.

Molecular Neurobiology
Humana Press
Publisher Country
United States of America
Thomson Reuters
Impact Factor
Publication Type
Prtinted only