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首页> 外文期刊>Neuron >Combinatorial expression of TRPV channel proteins defines their sensory functions and subcellular localization in C. elegans neurons.
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Combinatorial expression of TRPV channel proteins defines their sensory functions and subcellular localization in C. elegans neurons.

机译:TRPV通道蛋白的组合表达定义了其在秀丽隐杆线虫神经元中的感觉功能和亚细胞定位。

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摘要

C. elegans OSM-9 is a TRPV channel protein involved in sensory transduction and adaptation. Here, we show that distinct sensory functions arise from different combinations of OSM-9 and related OCR TRPV proteins. Both OSM-9 and OCR-2 are essential for several forms of sensory transduction, including olfaction, osmosensation, mechanosensation, and chemosensation. In neurons that express both OSM-9 and OCR-2, tagged OCR-2 and OSM-9 proteins reside in sensory cilia and promote each other's localization to cilia. In neurons that express only OSM-9, tagged OSM-9 protein resides in the cell body and acts in sensory adaptation rather than sensory transduction. Thus, alternative combinations of TRPV proteins may direct different functions in distinct subcellular locations. Animals expressing the mammalian TRPV1 (VR1) channel in ASH nociceptor neurons avoid the TRPV1 ligand capsaicin, allowing selective, drug-inducible activation of a specific behavior.
机译:秀丽隐杆线虫OSM-9是TRPV通道蛋白,参与感觉转导和适应。在这里,我们显示了不同的感觉功能源于OSM-9和相关OCR TRPV蛋白的不同组合。 OSM-9和OCR-2都是多种形式的感觉传导必不可少的,包括嗅觉,渗透压,机械感觉和化学感觉。在同时表达OSM-9和OCR-2的神经元中,标记的OCR-2和OSM-9蛋白驻留在感觉纤毛中,并促进彼此的纤毛定位。在仅表达OSM-9的神经元中,标记的OSM-9蛋白驻留在细胞体内,并在感觉适应而不是感觉转导中起作用。因此,TRPV蛋白的替代组合可能在不同的亚细胞位置指导不同的功能。在ASH伤害感受器神经元中表达哺乳动物TRPV1(VR1)通道的动物避免使用TRPV1配体辣椒素,从而可以选择性地,药物诱导性地激活特定行为。

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