Characterization of the Prokaryotic Sodium Channel NavSp Pore with a Microfluidic Bilayer Platform.

Characterization of the Prokaryotic Sodium Channel NavSp Pore with a Microfluidic Bilayer Platform.
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DOI:
10.1371/journal.pone.0131286
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发表时间:
2015
期刊:
影响因子:
3.7
通讯作者:
Morgan H
Morgan H
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Saha SC;Henderson AJ;Powl AM;Wallace BA;de Planque MR;Morgan H

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本文描述了使用一种新开发的微芯片双层平台来检查原核电压门控钠通道孔(NavSp)的电生理特性从Silicibacter pomeroyi。该平台允许同时分析多达6个双层。将蛋白脂质体掺入微流体双层芯片内形成的悬浮脂质双层中。该芯片提供从两侧进入双层的通道,从而实现化合物的快速和受控滴定。测量通道阻断药物硝苯地平对开放概率的剂量依赖性调节,并测定其IC 50。
This paper describes the use of a newly-developed micro-chip bilayer platform to examine the electrophysiological properties of the prokaryotic voltage-gated sodium channel pore (NavSp) from Silicibacter pomeroyi. The platform allows up to 6 bilayers to be analysed simultaneously. Proteoliposomes were incorporated into suspended lipid bilayers formed within the microfluidic bilayer chips. The chips provide access to bilayers from either side, enabling the fast and controlled titration of compounds. Dose-dependent modulation of the opening probability by the channel blocking drug nifedipine was measured and its IC50 determined.
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