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NALCN通道不是产卵行为回路中Gα或Gα调制的主要靶点。

NALCN Channels Are Not Major targets of Gα or Gα Modulation in the Egg-Laying Behavior Circuit.

作者信息

Jose Ariana, Collins Kevin

机构信息

Physiology & Biophysics, University of Miami, Coral Gables, Florida, United States.

Biology, University of Miami, Coral Gables, Florida, United States.

出版信息

MicroPubl Biol. 2024 Jan 11;2024. doi: 10.17912/micropub.biology.001065. eCollection 2024.

DOI:10.17912/micropub.biology.001065
PMID:38287929
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10823792/
Abstract

Sodium leak channels (NALCN) are regulators of cell membrane potential. Previous studies in mammalian neurons and have shown that Gα and Gα signaling antagonistically modulates NALCN activity to regulate neuron excitability and neurotransmitter release for behavior. Here, we test whether NALCNs mediate the effects of Gα and/or Gα signaling in the egg-laying circuit. We find that while gain-of-function NALCN mutants exhibit hyperactive egg-laying behavior, NALCNs are not required for the effects of Gα or Gα signaling for egg laying. These results show that NALCNs are not major effectors of G-protein signaling for egg-laying behavior.

摘要

钠泄漏通道(NALCN)是细胞膜电位的调节因子。先前在哺乳动物神经元中的研究表明,Gα和Gα信号传导以拮抗方式调节NALCN活性,从而调节神经元兴奋性和神经递质释放以影响行为。在此,我们测试NALCN是否介导Gα和/或Gα信号传导在产卵回路中的作用。我们发现,虽然功能获得性NALCN突变体表现出产卵行为亢进,但产卵时Gα或Gα信号传导的作用并不需要NALCN。这些结果表明,NALCN不是产卵行为中G蛋白信号传导的主要效应器。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7ea5/10823792/9a57f56515ff/25789430-2024-micropub.biology.001065.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7ea5/10823792/9a57f56515ff/25789430-2024-micropub.biology.001065.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7ea5/10823792/9a57f56515ff/25789430-2024-micropub.biology.001065.jpg

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本文引用的文献

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Genetics. 2022 Jul 4;221(3). doi: 10.1093/genetics/iyac084.
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Molecular topography of an entire nervous system.整个神经系统的分子拓扑。
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Presynaptic Gαo (GOA-1) signals to depress command neuron excitability and allow stretch-dependent modulation of egg laying in Caenorhabditis elegans.
突触前 Gαo(GOA-1)信号可降低指令神经元的兴奋性,并允许秀丽隐杆线虫中的伸展依赖性产卵调控。
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The Sex-Specific VC Neurons Are Mechanically Activated Motor Neurons That Facilitate Serotonin-Induced Egg Laying in .性别特异性 VC 神经元是机械激活的运动神经元,可促进 5-羟色胺诱导的产卵。
J Neurosci. 2021 Apr 21;41(16):3635-3650. doi: 10.1523/JNEUROSCI.2150-20.2021. Epub 2021 Mar 9.
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The HSN egg-laying command neurons are required for normal defecation frequency in (II).HSN产卵指令神经元对于(II)中的正常排便频率是必需的。
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