Synapse-specific control of experience-dependent plasticity by presynaptic NMDA receptors.
Synapse-specific control of experience-dependent plasticity by presynaptic NMDA receptors.
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DOI:
10.1016/j.neuron.2014.07.039
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发表时间:
2014-08-20
期刊:
影响因子:
16.2
通讯作者:
Philpot, Benjamin D.
中科院分区:
文献类型:
--
作者:
Larsen, Rylan S.;Smith, Ikuko T.;Miriyala, Jayalakshmi;Han, Ji Eun;Corlew, Rebekah J.;Smith, Spencer L.;Philpot, Benjamin D.
Sensory experience orchestrates the development of cortical circuitry by adaptively modifying neuro-transmission and synaptic connectivity. However, the mechanisms underlying these experience-dependent modifications remain elusive. Here we demonstrate that visual experience suppresses a presynaptic NMDA receptor (preNMDAR)-mediated form of timing-dependent long-term depression (tLTD) at visual cortex layer (L) 4-2/3 synapses. This tLTD can be maintained during development, or reinstated in adulthood, by sensory deprivation. The changes in tLTD are mirrored by changes in glutamate release; visual deprivation enhances both tLTD and glutamate release. These effects require the GluN3A NMDAR subunit, the levels of which are increased by visual deprivation. Further, by coupling the pathway-specific optogenetic induction of tLTD with cell-type-specific NMDAR deletion, we find that visual experience modifies preNMDAR-mediated plasticity specifically at L4-L2/3 synapses.
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