期刊
NEUROSCIENCE RESEARCH
卷 127, 期 -, 页码 45-52出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.neures.2017.09.013
关键词
Release site clearance; Compensatory endocytosis; Synaptic vesicle recycling
资金
- Deutsche Forschungsgemeinschaft (DFG) [SFB958/A01, SFB958/A07, HA2686/8-1, MA4735/1-1]
- Neurocure Cluster of Excellence [DFG-Exc-257]
Brain function depends on the ability of neurons to communicate with each other via the regulated exocytosis of neurotransmitter-containing synaptic vesicles (SVs) at specialized presynaptic release sites termed active zones (AZs). The presynaptic AZ comprises an assembly of large multidomain proteins that link the machinery for vesicle fusion to sites of voltage-dependent Ca2+ entry. Following SV fusion at AZ release sites SV membranes are retrieved by compensatory endocytosis, and SVs are reformed. Recent data suggest that Ca2+-triggered SV exocytosis at AZs and endocytic retrieval of SVs may be functionally and physically linked. Here we discuss the evidence supporting such exo-endocytic coupling as well as possible modes and mechanisms that may underlie coupling of exocytosis and endocytosis at and around AZs in presynaptic nerve terminals. As components of the exo-endocytic machinery at synapses have been linked to neurological and neuropsychiatric disorders, understanding the mechanisms that couple exocytosis and endocytosis at AZs may be of importance for developing novel therapies to treat these diseases. (C) 2017 Elsevier Ireland Ltd and Japan Neuroscience Society. All rights reserved.
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