Intracellular Ca2+ distribution in migrating transformed epithelial cells.


Migration of transformed Madin-Darby canine kidney (MDCK-F) cells depends on the polarized activity of a Ca2+-sensitive K+ channel. We tested whether a gradient of intracellular Ca2+-concentration ([Ca2+]i) underlies the horizontal polarization of K+ channel activity. [Ca2+]i was measured with the fluorescent dye fura-2/AM. Spatial analysis of [Ca2+]i… (More)


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