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首页> 外文期刊>Neuron >The HSPGs Syndecan and Dallylike bind the receptor phosphatase LAR and exert distinct effects on synaptic development.
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The HSPGs Syndecan and Dallylike bind the receptor phosphatase LAR and exert distinct effects on synaptic development.

机译:HSPG的Syndecan和Dallylike结合受体磷酸酶LAR,对突触的发育产生明显的影响。

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摘要

The formation and plasticity of synaptic connections rely on regulatory interactions between pre- and postsynaptic cells. We show that the Drosophila heparan sulfate proteoglycans (HSPGs) Syndecan (Sdc) and Dallylike (Dlp) are synaptic proteins necessary to control distinct aspects of synaptic biology. Sdc promotes the growth of presynaptic terminals, whereas Dlp regulates active zone form and function. Both Sdc and Dlp bind at high affinity to the protein tyrosine phosphatase LAR, a conserved receptor that controls both NMJ growth and active zone morphogenesis. These data and double mutant assays showing a requirement of LAR for actions of both HSPGs lead to a model in which presynaptic LAR is under complex control, with Sdc promoting and Dlp inhibiting LAR in order to control synapse morphogenesis and function.
机译:突触连接的形成和可塑性依赖于突触前和突触后细胞之间的调节相互作用。我们显示果蝇硫酸乙酰肝素蛋白聚糖(HSPGs)Syndecan(Sdc)和Dallylike(Dlp)是控制突触生物学不同方面所必需的突触蛋白。 Sdc促进突触前终端的增长,而Dlp调节活跃区的形式和功能。 Sdc和Dlp都与蛋白酪氨酸磷酸酶LAR高亲和力结合,LAR是一种保守的受体,既可控制NMJ的生长,又可控制活性区的形态。这些数据和双重突变试验表明,两种HSPG的作用都需要LAR,这导致了一个模型,其中突触前LAR受复杂控制,Sdc促进和Dlp抑制LAR,以控制突触的形态和功能。

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