ArticleMolecular pharmacology2014
Structural determinants and mechanism of action of a GluN2C-selective NMDA receptor positive allosteric modulator.
Article in Molecular pharmacology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.
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Who cites it
51 citing papers in PubMed, 77 citations in OpenAlex.
- GluN2D NMDA Receptors: Bridging Physiology and Pathology.Biological psychiatry · 2026Review
- NMDA Receptor Mediated Mechanisms in the Post-Stroke Brain: From Physiology to Pathology.Biomolecules · 2026Review
- GluN2B-specific NMDAR positive allosteric modulation reverses cognitive and behavioral abnormalities inScience advances · 2026Article
- Subtype-selective targeting of NMDA receptors-A potent new compound emerges.The Journal of general physiology · 2026Article
- New advances in small molecule drugs targeting NMDA receptors.Acta pharmacologica Sinica · 2026Review
- Enhancement of hippocampal interneuron excitability by NMDA receptor positive allosteric modulation.The Journal of physiology · 2025Article
- Natural aminosterols inhibit NMDA receptors with low nanomolar potency.The FEBS journal · 2025Article
- EAR-20 peptide, a novel NMDA receptor positive allosteric modulator.Frontiers in pharmacology · 2025Article
- Therapeutic potential of N-methyl-D-aspartate receptor modulators in psychiatry.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2024Review
- Selective Cell-Surface Expression of Triheteromeric NMDA Receptors.Methods in molecular biology (Clifton, N.J.) · 2024Article
- Distinct structure and gating mechanism in diverse NMDA receptors with GluN2C and GluN2D subunits.Nature structural & molecular biology · 2023Article
- Article
- GluN2B-containing NMDARs in the mammalian brain: pharmacology, physiology, and pathology.Frontiers in molecular neuroscience · 2023Review
- Structural insights into assembly and function of GluN1-2C, GluN1-2A-2C, and GluN1-2D NMDARs.Molecular cell · 2022Article
- Membrane Stretch Gates NMDA Receptors.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022Article
- NaNeurobiology of disease · 2022Article
- Structure, Function, and Pharmacology of Glutamate Receptor Ion Channels.Pharmacological reviews · 2021Review
- Distinct GluN1 and GluN2 Structural Determinants for Subunit-Selective Positive Allosteric Modulation ofACS chemical neuroscience · 2021Article
- PTC-174, a positive allosteric modulator of NMDA receptors containing GluN2C or GluN2D subunits.Neuropharmacology · 2020Article
- Hodgkin-Huxley-Katz Prize Lecture: Genetic and pharmacological control of glutamate receptor channel through a highly conserved gating motif.The Journal of physiology · 2020Article
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Authors and funding
10 authors at 3 institutions in 1 country.
Funding
Abstract
NMDA receptors are tetrameric complexes of GluN1, GluN2A-D, and GluN3A-B subunits and are involved in normal brain function and neurologic disorders. We identified a novel class of stereoselective pyrrolidinone (PYD) positive allosteric modulators for GluN2C-containing NMDA receptors, exemplified by methyl 4-(3-acetyl-4-hydroxy-1-[2-(2-methyl-1H-indol-3-yl)ethyl]-5-oxo-2,5-dihydro-1H-pyrrol-2-yl)benzoate. Here we explore the site and mechanism of action of a prototypical analog, PYD-106, which at 30 μM does not alter responses of NMDA receptors containing GluN2A, GluN2B, and GluN2D and has no effect on AMPA [α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid] and kainate receptors. Coapplication of 50 μM PYD-106 with a maximally effective concentration of glutamate and glycine increases the response of GluN1/GluN2C NMDA receptors in HEK-293 cells to 221% of that obtained in the absence of PYD (taken as 100%). Evaluation of the concentration dependence of this enhancement revealed an EC50 value for PYD of 13 μM. PYD-106 increased opening frequency and open time of single channel currents activated by maximally effective concentrations of agonist but only had modest effects on glutamate and glycine EC50. PYD-106 selectively enhanced the responses of diheteromeric GluN1/GluN2C receptors but not triheteromeric GluN1/GluN2A/GluN2C receptors. Inclusion of residues encoded by GluN1-exon 5 attenuated the effects of PYD. Three GluN2C residues (Arg194, Ser470, Lys470), at which mutagenesis virtually eliminated PYD function, line a cavity at the interface of the ligand binding and the amino terminal domains in a homology model of GluN1/GluN2C built from crystallographic data on GluN1/GluN2B. We propose that this domain interface constitutes a new allosteric modulatory site on the NMDA receptor.
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