• Long-Term Enhancement of NMDA Receptor Function in Inhibitory Neurons Preferentially Modulates Potassium Channels and Cell Adhesion Molecules

      Xia, D.; Zhang, X.; Deng, D.; Ma, X.; Masri, S.; Wang, J.; Bao, S.; Hu, S.; Zhou, Q.; Department of Physiology, University of Arizona (Frontiers Media S.A., 2022)
      Effectively enhancing the activity of inhibitory neurons has great therapeutic potentials since their reduced function/activity has significant contributions to pathology in various brain diseases. We showed previously that NMDAR positive allosteric modulator GNE-8324 and M-8324 selectively increase NMDAR activity on the inhibitory neurons and elevates their activity in vitro and in vivo. Here we examined the impact of long-term administering M-8324 on the functions and transcriptional profiling of parvalbumin-containing neurons in two representative brain regions, primary auditory cortex (Au1) and prelimbic prefrontal cortex (PrL-PFC). We found small changes in key electrophysiological parameters and RNA levels of neurotransmitter receptors, Na+ and Ca2+ channels. In contrast, large differences in cell adhesion molecules and K+ channels were found between Au1 and PrL-PFC in drug-naïve mice, and differences in cell adhesion molecules became much smaller after M-8324 treatment. There was also minor impact of M-8324 on cell cycle and apoptosis, suggesting a fine safety profile. Copyright © 2022 Xia, Zhang, Deng, Ma, Masri, Wang, Bao, Hu and Zhou.