A knock-in Drosophila model supports a conserved link between potassium channelopathy and involuntary movement

A knock-in Drosophila model supports a conserved link between potassium channelopathy and involuntary movement
复制标题

敲入果蝇模型支持钾离子通道病和不自主运动之间的保守联系

DOI:
10.1101/2020.02.20.957571
复制
发表时间:
2020
期刊:
--
影响因子:
--
通讯作者:
Kratschmer P
Kratschmer P
中科院分区:
--
文献类型:
--
作者:
Kratschmer P

文献摘要

参考文献

相似文献

背景遗传和体外研究已将hSlo 1 BK(大钾)通道中的杂合功能获得突变(D434 G)与阵发性运动障碍联系起来。然而,支持这种联系在体内models.ObjectivesWe的目的是重新创建相当于突变hSlo1 D434G的果蝇,果蝇,并研究如何改变这种突变的运动和动作电位waveforms.MethodsWe产生了一个敲入果蝇模型的hSlo1 D434G。我们使用视频跟踪和红外光束中断系统来测试运动是否在这个模型中改变,和膜片钳电生理学,以确定如何突变影响动作电位waveforms.ResultsWe确定深刻的运动功能障碍和零星的腿抽搐,以及减少的宽度和增强的后超极化阶段的动作电位,结论我们的研究结果支持在远亲物种中BK通道功能增强和运动控制中断之间存在保守的关系。
BackgroundGenetic and in vitro studies have linked a heterozygous gain-of-function mutation (D434G) in the hSlo1 BK (Big potassium) channel to paroxysmal dyskinesia. However, support for this linkage from in vivo models has been lacking.ObjectivesWe aimed to re-create the equivalent mutation to hSlo1 D434G in the fruit fly,Drosophila, and examine how this mutation altered movement and action potential waveforms.MethodsWe generated a knock-inDrosophilamodel of hSlo1 D434G. We used video-tracking and infra-red beam-break systems to test whether locomotion was altered in this model, and patch-clamp electrophysiology to determine how the mutation affected action potential waveforms.ResultsWe identified profound motor dysfunction and sporadic leg twitches, as well as a reduced width and an enhancement of the afterhyperpolarization phase of action potentials, in the model background.ConclusionOur results support a conserved relationship between enhanced BK channel function and disrupted motor control across distantly related species.
DOI: 10.1113/jp271323
发表时间: 2015-11-15
影响因子: 5.5
作者:
Kadas, Dimitrios;Ryglewski, Stefanie;Duch, Carsten
通讯作者: Duch, Carsten
DOI: 10.1152/jn.00461.2006
发表时间: 2006-09-01
影响因子: 2.5
作者:
Diez-Sampedro, Ana;Silverman, William R.;Richerson, George B.
通讯作者: Richerson, George B.
DOI: 10.1101/gad.986602
发表时间: 2002-06-15
影响因子: 10.5
作者:
Rong, YKS;Titen, SW;Golic, KG
通讯作者: Golic, KG
使用遗传学和同源重组扰动 A 到 I RNA 编辑。
DOI: --
发表时间: 2011
影响因子: --
作者:
Cynthia Staber;Selena L. Gell;J. Jepson;R. Reenan
通讯作者: R. Reenan
DOI: 10.1113/jphysiol.2009.169243
发表时间: 2009-04-01
影响因子: 5.5
作者:
Lee, Urvi S.;Cui, Jianmin
通讯作者: Cui, Jianmin