Neurexins regulate presynaptic GABA(B)-receptors at central synapses.
Neurexins regulate presynaptic GABA(B)-receptors at central synapses.
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DOI:
10.1038/s41467-021-22753-5
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发表时间:
2021-04-22
影响因子:
16.6
通讯作者:
Südhof TC
中科院分区:
文献类型:
--
作者:
Luo F;Sclip A;Merrill S;Südhof TC
Diverse signaling complexes are precisely assembled at the presynaptic active zone for dynamic modulation of synaptic transmission and synaptic plasticity. Presynaptic GABAB-receptors nucleate critical signaling complexes regulating neurotransmitter release at most synapses. However, the molecular mechanisms underlying assembly of GABAB-receptor signaling complexes remain unclear. Here we show that neurexins are required for the localization and function of presynaptic GABAB-receptor signaling complexes. At four model synapses, excitatory calyx of Held synapses in the brainstem, excitatory and inhibitory synapses on hippocampal CA1-region pyramidal neurons, and inhibitory basket cell synapses in the cerebellum, deletion of neurexins rendered neurotransmitter release significantly less sensitive to GABAB-receptor activation. Moreover, deletion of neurexins caused a loss of GABAB-receptors from the presynaptic active zone of the calyx synapse. These findings extend the role of neurexins at the presynaptic active zone to enabling GABAB-receptor signaling, supporting the notion that neurexins function as central organizers of active zone signaling complexes. Neurexins are evolutionarily conserved cell adhesion molecules that tune synapse formation and specification. Here the authors show that neurexins play similar roles in regulating presynaptic GABAB receptors at multiple CNS synapses.
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影响因子:
5.7
作者:
Chalifoux JR;Carter AG
通讯作者:
Carter AG
影响因子:
16.6
作者:
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通讯作者:
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影响因子:
16.2
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Bender, Kevin J.
影响因子:
16.2
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Han Y;Kaeser PS;Südhof TC;Schneggenburger R
通讯作者:
Schneggenburger R
影响因子:
25
作者:
Boehme, Mathias A.;Beis, Christina;Sigrist, Stephan J.
通讯作者:
Sigrist, Stephan J.