Journal
PROCESSES
Volume 10, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/pr10081462
Keywords
3D-QSAR; ADMET; neuropathic pain; analgesic activity; molecular docking; NMDA
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Funding
- Princess Nourah bint Abdulrahman University Researchers Supporting Project, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia [PNURSP2022R89]
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A new class of selective antagonists of the N-Methyl-D-Aspartate (NMDA) receptor subunit 2B has been developed using molecular modeling techniques. These antagonists show promising analgesic activity against neuropathic pain, with steric, electrostatic, and hydrogen bond acceptor fields playing a key role.
A new class of selective antagonists of the N-Methyl-D-Aspartate (NMDA) receptor subunit 2B have been developed using molecular modeling techniques. The three-dimensional quantitative structure-activity relationship (3D-QSAR) study, based on comparative molecular field analysis (CoMFA) and comparative molecular similarity index analysis (CoMSIA) models, indicate that steric, electrostatic and hydrogen bond acceptor fields have a key function in the analgesic activity against neuropathic pain. The predictive accuracy of the developed CoMFA model (Q(2) = 0.540, R-2 = 0.980, R-2 pred = 0.613) and the best CoMSIA model (Q(2) = 0.665, R-2 = 0.916, R-2 pred = 0.701) has been successfully examined through external and internal validation. Based on ADMET in silico properties, L1, L2 and L3 ligands are non-toxic inhibitors of 1A2, 2C19 and 2C9 cytochromes, predicted to passively cross the blood-brain barrier (BBB) and have the highest probability to penetrate the central nervous system (CNS). Molecular docking results indicate that the active ligands (L1, L2 and L3) interact specifically with Phe176, Glu235, Glu236, Gln110, Asp136 and Glu178 amino acids of the transport protein encoded as 3QEL. Therefore, they could be used as analgesic drugs for the treatment of neuropathic pain.
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