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细胞技术

Analysing Steroid Modulation of BKCa Channels Reconstituted into Planar Lipid Bilayers

2025-02-28 细胞技术 加入收藏
A number of recent studies have described the activation of BKCa channels by ste

A number of recent studies have described the activation of BKCa channels by steroid hormones such as estrogen. The proposed mechanisms are diverse and include both the direct interaction with the ion channel subunits and the stimulation via receptor activation and cell signalling pathways. To investigate the activation of BKCa channels by estrogen we devised a cell-free system by incorporating recombinant channels of known subunit composition into artificial bilayers and recorded single channel currents. This chapter describes the methods used to prepare purified membrane fractions from cultured cells and the construction of artificial phospholipids bilayers for the incorporation and recording of ion channels.

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