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Títol: Kainate receptor activation shapes short-term synaptic plasticity by controlling receptor lateral Mobility at glutamatergic synapses
Autor: Polenghi, Alice
Nieus, Thierry
Guazzi, Stefania
Gorostiza Langa, Pablo Ignacio
Petrini, Enrica Maria
Barberis, Andrea
Matèria: Sinapsi
Receptors neurals
Neurotransmissió
Synapses
Neural receptor
Neural transmission
Data de publicació: 16-des-2020
Resum: Kainate receptors (KARs) mediate postsynaptic currents with a key impact on neuronal excitability. However, the molecular determinants controlling KAR postsynaptic localization and stabilization are poorly understood. Here, we exploit optogenetic and single-particle tracking approaches to study the role of KAR conformational states induced by glutamate binding on KAR lateral mobility at synapses. We report that following glutamate binding, KARs are readily and reversibly trapped at glutamatergic synapses through increased interaction with the β-catenin/N-cadherin complex. We demonstrate that such activation-dependent synaptic immobilization of KARs is crucial for the modulation of short-term plasticity of glutamatergic synapses. Thus, the present study unveils the crosstalk between conformational states and lateral mobility of KARs, a mechanism regulating glutamatergic signaling, particularly in conditions of sustained synaptic activity.
Nota: Reproducció del document publicat a: https://doi.org/10.1016/j.celrep.2020.107735
És part de: Cell Reports, 2020, vol. 31, num. 10, p. 107735
URI: https://hdl.handle.net/2445/177572
Recurs relacionat: https://doi.org/10.1016/j.celrep.2020.107735
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Articles publicats en revistes (Institut de Bioenginyeria de Catalunya (IBEC))

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