申请人:Life Technologies Corporation
公开号:EP2562543A1
公开(公告)日:2013-02-27
The present invention relates to methods for detecting the activity of an ion channel in a cell. The methods comprise providing a loading buffer solution to a cell that has an ion channel. The loading buffer comprises at least one thallium indicator (e.g., an environmentally sensitive, luminescent dye) and a physiological concentration of chloride ions. The methods further comprise providing a stimulus buffer to the cell, wherein the stimulus buffer comprises thallium (e.g., thallium ions). Providing the stimulus buffer causes thallium influx into the cell through the ion channel. After providing the stimulus buffer, the luminescence (e.g., fluorescence) of the dye in the cell is detected. The luminescence of the dye can change in the presence or absence of thallium. The methods may be used to measure influx or efflux of thallium through an ion channel.
本发明涉及检测细胞中离子通道活性的方法。这些方法包括向具有离子通道的细胞提供上载缓冲溶液。上载缓冲液包括至少一种铊指示剂(例如,环境敏感的发光染料)和生理浓度的氯离子。所述方法还包括向细胞提供刺激缓冲液,其中刺激缓冲液包括铊(如铊离子)。提供刺激缓冲液会导致铊通过离子通道流入细胞。提供刺激缓冲液后,检测细胞中染料的发光(如荧光)。铊存在或不存在时,染料的发光会发生变化。这些方法可用于测量铊通过离子通道的流入或流出。