Endocytic trafficking and recycling maintain a pool of mobile surface AMPA receptors required for synaptic potentiation.
Endocytic trafficking and recycling maintain a pool of mobile surface AMPA receptors required for synaptic potentiation.
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DOI:
10.1016/j.neuron.2009.05.025
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发表时间:
2009-07-16
期刊:
影响因子:
16.2
通讯作者:
Choquet, Daniel
中科院分区:
文献类型:
--
作者:
Petrini, Enrica Maria;Lu, Jiuyi;Cognet, Laurent;Lounis, Brahim;Ehlers, Michael D.;Choquet, Daniel
At excitatory glutamatergic synapses, postsynaptic endocytic zones (EZs), which are adjacent to the postsynaptic density (PSD), mediate clathrin-dependent endocytosis of surface AMPA Receptors (AMPAR) as a first step to receptor recycling or degradation. However, it remains unknown if receptor recycling influences AMPARs lateral diffusion, and if EZs are important for the expression of synaptic potentiation. Here we demonstrate that the presence of both EZs and AMPAR recycling maintain a large pool of mobile AMPARs at synapses. In addition, we find that synaptic potentiation is accompanied by an accumulation and immobilization of AMPARs at synapses resulting from both their exocytosis and stabilization at the PSD. Displacement of EZs from the postsynaptic region impairs the expression of synaptic potentiation by blocking AMPAR recycling. Thus receptor recycling is crucial for maintaining a mobile population of surface AMPARs which can be delivered to synapses for increases in synaptic strength.
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DOI:
10.1523/jneurosci.1042-04.2004
发表时间:
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期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
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影响因子:
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影响因子:
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影响因子:
25
作者:
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通讯作者:
Choquet, D
影响因子:
16.2
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