Long-Term Potentiation of Neuron-Glia Synapses Mediated by Ca 2+ -Permeable AMPA Receptors

Author:

Ge Woo-Ping12,Yang Xiu-Juan12,Zhang Zhijun12,Wang Hui-Kun12,Shen Wanhua12,Deng Qiu-Dong12,Duan Shumin12

Affiliation:

1. Institute of Neuroscience and Key Laboratory of Neurobiology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.

2. Graduate School of the Chinese Academy of Sciences, Shanghai 200031, China.

Abstract

Interactions between neurons and glial cells in the brain may serve important functions in the development, maintenance, and plasticity of neural circuits. Fast neuron-glia synaptic transmission has been found between hippocampal neurons and NG2 cells, a distinct population of macroglia-like cells widely distributed in the brain. We report that these neuron-glia synapses undergo activity-dependent modifications analogous to long-term potentiation (LTP) at excitatory synapses, a hallmark of neuronal plasticity. However, unlike the induction of LTP at many neuron-neuron synapses, both induction and expression of LTP at neuron-NG2 synapses involve Ca 2+ -permeable AMPA receptors on NG2 cells.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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