期刊
SCIENCE
卷 310, 期 5754, 页码 1678-1680出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1120640
关键词
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资金
- Telethon [GP0272Y01] Funding Source: Medline
Snake presynaptic phospholipase A2 neurotoxins (SPANS) paralyze the neuromuscular junction (NMJ). Upon intoxication, the NMJ enlarges and has a reduced content of synaptic vesicles, and primary neuronal cultures show synaptic swelling with surface exposure of the lumenal domain of the synaptic vesicle protein synaptotagmin I. Concomitantly, these neurotoxins induce exocytosis of neurotransmitters. We found that an equimolar mixture of lysophospholipids and fatty acids closely mimics all of the biological effects of SPANS. These results draw attention to the possible role of local lipid changes in synaptic vesicle release and provide new tools for the study of exocytosis.
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