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首页> 外文期刊>Neuron >Miniature Neurotransmission Regulates Drosophila Synaptic Structural Maturation
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Miniature Neurotransmission Regulates Drosophila Synaptic Structural Maturation

机译:微型神经传递调节果蝇突触结构成熟。

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摘要

Miniature neurotransmission is the transsynaptic process where single synaptic vesicles spontaneously released from presynaptic neurons induce miniature postsynaptic potentials. Since their discovery over 60 years ago, miniature events have been found at every chemical synapse studied. However, the invivo necessity for these small-amplitude events has remained enigmatic. Here, we show that miniature neurotransmission is required for the normal structural maturation of Drosophila glutamatergic synapses in a developmental role that is not shared by evoked neurotransmission. Conversely, we find that increasing miniature events is sufficient to induce synaptic terminal growth. We show that miniature neurotransmission acts locally at terminals to regulate synapse maturation via a Trio guanine nucleotide exchange factor (GEF) and Rac1 GTPase molecular signaling pathway. Our results establish that miniature neurotransmission, a universal but often-overlooked feature of synapses, has unique and essential functions invivo.
机译:微型神经传递是突触过程,其中从突触前神经元自发释放的单个突触囊泡诱导微型突触后电位。自从60多年前发现以来,在研究的每个化学突触中都发现了微型事件。但是,这些小幅度事件的体内必要性仍然是个谜。在这里,我们显示了果蝇谷氨酸能突触的正常结构成熟所需要的微型神经传递,这是诱发的神经传递所不具有的发展作用。相反,我们发现增加微型事件足以诱导突触末端生长。我们显示微型神经传递作用在终端通过三重鸟嘌呤核苷酸交换因子(GEF)和Rac1 GTPase分子信号传导通路来调节突触成熟。我们的研究结果表明,微型神经传递是突触的普遍但经常被忽视的特征,它在体内具有独特而必要的功能。

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