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首页> 外文期刊>Neuron >Drosophila Futsch regulates synaptic microtubule organization and is necessary for synaptic growth.
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Drosophila Futsch regulates synaptic microtubule organization and is necessary for synaptic growth.

机译:果蝇Futsch调节突触微管的组织,是突触生长所必需的。

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摘要

We present evidence that Futsch, a novel protein with MAP1B homology, controls synaptic growth at the Drosophila neuromuscularjunction through the regulation of the synaptic microtubule cytoskeleton. Futsch colocalizes with microtubules and identifies cytoskeletal loops that traverse the lateral margin of select synaptic boutons. An apparent rearrangement of microtubule loop architecture occurs during bouton division, and a genetic analysis indicates that Futsch is necessary for this process. futsch mutations disrupt synaptic microtubule organization, reduce bouton number, and increase bouton size. These deficits can be partially rescued by neuronal overexpression of a futsch MAP1B homology domain. Finally, genetic manipulations that increase nerve-terminal branching correlate with increased synaptic microtubule loop formation, and both processes require normal Futsch function. These data suggest a common microtubule-based growth mechanism at the synapse and growth cone.
机译:我们目前的证据,Futsch,具有MAP1B同源性的新型蛋白质,通过调节突触微管细胞骨架来控制果蝇神经肌肉连接处的突触生长。 Futsch与微管共定位并确定横穿选定突触钮扣的侧缘的细胞骨架环。在布顿分裂过程中,微管环结构发生了明显的重排,遗传分析表明,对于这个过程,Futsch是必需的。 futsch突变破坏突触微管的组织,减少胸肉数量,并增加胸肉大小。这些缺陷可以通过futsch MAP1B同源结构域的神经元过表达而得到部分挽救。最后,增加神经末梢分支的遗传操作与增加的突触微管环形成相关,并且两个过程都需要正常的Futsch功能。这些数据表明在突触和生长锥常见的基于微管的生长机制。

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