nr2a

QNZ46 is a non-competitive antagonist of NMDA receptors, selectively targeting NR2C/NR2D subunits.

Ifenprodil is a selective NMDA receptor (glutamate) antagonist.

TCN 213 is an antagonist of NMDA receptor that has a selective for NR1/NR2A over NR1/NR2B

Ro 25-6981 is a potent and selective activity-dependent NMDA receptors blocker containing the NR2B subunit with IC50s of 0.009 and 52 μM for cloned receptor subunit combinations NR1C/NR2B and NR1C/NR2A respectively. Ro 25-6981 can be used in studies about Parkinson's disease.

Ro 25-6981 Maleate is a potent and selective activity-dependent NMDA receptor blocker, specifically targeting the NR2B subunit (IC50 values are 0.009 μM for NR1C/NR2B and 52 μM for NR1C/NR2A receptor subunit combinations).

Tat-NR2B9c acetate (NA-1 acetate) is a postsynaptic density-95 (PSD-95) inhibitor, with EC50 values of 6.7 nM and 670 nM for PSD-95d2 (PSD-95 PDZ domain 2) and PSD-95d1, respectively. Tat-NR2B9c acetate disrupts the PSD-95/NMDAR interaction, inhibiting NR2A and NR2B binding to PSD-95 with IC50 values of 0.5 μM and 8 μM, respectively. Tat-NR2B9c acetate also inhibits neuronal nitric oxide synthase (nNOS)/PSD-95 interaction, and possesses neuroprotective efficacy.

Eliprodil (SL-820715)(SL-820715), a non-competitive NR2B-NMDA receptor antagonist(IC50: 1 uM), less effective for NR2A- and NR2C-containing receptors(IC50> 100 uM). It has been used in trials studying the treatment of Parkinson Disease and Movement Disorders.

TCN 237 serves as an antagonist of NR2B subunit-containing NMDA receptors, with a Ki value of 0.85 nM. It specifically blocks glutamate and glycine-induced currents in whole-cell patch-clamp assays when using L-M(TK-) cells expressing NR2B subunit-containing NMDA receptors. This is in contrast to its effect on L-M(TK-) cells with NR2A- or NR2D subunit-containing receptors and HEK293 cells with NR2C subunit-containing receptors. Additionally, TCN 237 at 3 mg/kg dosage mitigates carrageenan-induced mechanical hyperalgesia in rats.

Tat-NR2BAA is an inactive control peptide of Tat-NR2B9c. It shares a similar sequence with Tat-NR2B9c, but possesses a double-point mutation in the COOH terminal tSXV motif. This mutation renders Tat-NR2BAA unable to bind PSD-95. Tat-NR2B9c, on the other hand, is a membrane-permeable peptide that interferes with PSD-95/NMDAR binding. This interference leads to the decoupling of NR2B- and/or NR2A-type NMDARs from PSD-95[1][2].

N-Methyl-D-aspartate (NMDA) receptors are Ca2+ permeable ligand-gated channels of the central nervous system that are activated after binding of the co-agonists glutamate and glycine. CAY10608 is a propanolamine that potently, selectively, and non-competitively antagonizes the NR2B subunit of NMDA receptors (IC50 = 50 nM). It does not inhibit NR1, NR2A, NR2C, and NR2D subunits and has no significant effects on α-amino-3-hydroxy-5-methyl-4-isoxazolepropioinic acid (AMPA) or kainate receptors. CAY10608 is neuroprotective, since it prevents NMDA-triggered release of lactate dehydrogenase from cultured cortical neurons. Also, CAY10608, when administered intraperitoneally, reduces brain infarct volume resulting from transient ischemia via carotid artery occlusion.

PEAQX (NVP-AAM077)(NVP-AAM 077) is an effective and orally available NMDA antagonist. It can inhibit human NMDA receptors for 1A/2A(IC50: 270 nM), rather than 1A/2B(29, 600 nM).

Tat-NR2BAA TFA serves as the inactive control peptide for Tat-NR2B9c, featuring a comparable sequence with a crucial distinction: a double-point mutation in its COOH-terminal tSXV motif. This alteration renders Tat-NR2BAA TFA unable to bind to PSD-95, in contrast to Tat-NR2B9c. The latter is a membrane-permeant peptide that impedes PSD-95/NMDAR interaction, specifically detaching NR2B- and/or NR2A-type NMDARs from PSD-95 [1].

TCN 201 is a selective antagonist of NMDA receptors containing the NR2A subunit.

Dityrosine, an oxidation product of protein formed through the intermolecular cross-linking of tyrosyl radicals from the reactive oxygen species (ROS) and tyrosine interaction, is associated with decreased hippocampal expression of NMDA receptor subunits Nr1, Nr2a, and Nr2b when administered intragastrically at 320 µg kg per day, leading to memory impairments in mice as evidenced by their performance in a novel object recognition test. Additionally, it raises fasting blood glucose levels while reducing plasma insulin levels and the pancreatic expression of insulin synthesis-related genes Ins2, Pdx1, and MafA. Increased dityrosine levels have been positively linked to a range of diseases, including autism spectrum disorder, cataracts, Alzheimer's disease, Parkinson's disease, atherosclerosis, and cystic fibrosis.

GluN2B (formally NR2B) selective, competitive antagonist of the NMDA receptor. Blocks NMDA-evoked current in mouse cortical neurons (IC50 = 480 nM); also inhibits NMDA-evoked responses in oocytes expressing GluN2B (formally NR2B), but not GluN2A (formally