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Bufo marinus oocytes as a model for ion channel protein expression and functional characterization for electrophysiological studies

机译:蟾蜍卵母细胞作为离子通道蛋白表达和电生理研究功能表征的模型

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Oocytes from Xenopus laevis are commonly used as an expression system for ion channel proteins. The aim of this study was to determine whether oocytes from the Colombian native toad, Bufo marinus, could be used as an alternative expression system for ion channel protein expression and functional characterization using the two-microelectrode voltage clamp method. B. marinus oocytes and X. laevis were isolated and cultured in similar conditions. The mean resting membrane potential of B. marinus oocytes was similar to that of X. laevis oocytes as well as the whole-cell basal currents. The potassium ion channel Kv1.1 was successfully expressed in B. marinus oocytes and showed a typical outward rectifying current. Potassium channel blockers reduced these currents. The similarities on electrical properties and expression of ion channel proteins show that B. marinus oocytes can be used effectively to express these proteins, making these cells a viable heterologous system for the expression of ion channel proteins and their electrophysiological characterization. Copyright (C) 2004 S. Karger AG, Basel.
机译:非洲爪蟾的卵母细胞通常用作离子通道蛋白的表达系统。这项研究的目的是确定是否可以使用两微电极电压钳方法将哥伦比亚天然蟾蜍蟾蜍卵母细胞用作离子通道蛋白表达和功能表征的替代表达系统。分离B.marinus卵母细胞和X.laevis并在相似条件下培养。 B. marinus卵母细胞的平均静息膜电位与X. laevis卵母细胞以及全细胞基础电流相似。钾离子通道Kv1.1在B.marinus卵母细胞中成功表达,并显示出典型的向外整流电流。钾通道阻滞剂降低了这些电流。电特性和离子通道蛋白表达的相似性表明,B.marinus卵母细胞可以有效地表达这些蛋白,使这些细胞成为表达离子通道蛋白及其电生理特性的可行异源系统。版权所有(C)2004 S.Karger AG,巴塞尔。

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