A model for synaptic development regulated by NMDA receptor subunit expression.

Journal of Computational Neuroscience
Shigeru Kubota, Tatsuo Kitajima

Abstract

Activation of NMDA receptors (NMDARs) is highly involved in the potentiation and depression of synaptic transmission. NMDARs comprise NR1 and NR2B subunits in the neonatal forebrain, while the expression of NR2A subunit is increased over time, leading to shortening of NMDAR-mediated synaptic currents. It has been suggested that the developmental switch in the NMDAR subunit composition regulates synaptic plasticity, but its physiological role remains unclear. In this study, we examine the effects of the NMDAR subunit switch on the spike-timing-dependent plasticity and the synaptic weight dynamics and demonstrate that the subunit switch contributes to inducing two consecutive processes-the potentiation of weak synapses and the induction of the competition between them-at an adequately rapid rate. Regulation of NMDAR subunit expression can be considered as a mechanism that promotes rapid and stable growth of immature synapses.

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Citations

Aug 19, 2014·Journal of Physiology, Paris·Magalí C CercatoDiana A Jerusalinsky
Jan 29, 2010·Journal of Computational Neuroscience·Shigeru Kubota, Tatsuo Kitajima
May 1, 2012·Neuroscience Letters·Kazuko HayashiTeiji Sawa
Jul 21, 2009·Neural Networks : the Official Journal of the International Neural Network Society·Shigeru KubotaTatsuo Kitajima
Jun 6, 2008·Respiratory Physiology & Neurobiology·Margaret T T Wong-Riley, Qiuli Liu
Jul 31, 2020·ELife·Tuomo Mäki-MarttunenKim T Blackwell
Apr 13, 2018·Frontiers in Computational Neuroscience·Hideaki YamamotoMichio Niwano
Jan 26, 2020·Journal of Computational Neuroscience·Akke Mats Houben, Matthias S Keil

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