Highly selective tridentate fluorescent probes for visualizing intracellular Mg2+ dynamics without interference from Ca2+ fluctuation†
Abstract
We developed highly selective fluorescent Mg2+ probes based on a novel tridentate Mg2+-selective chelator. The superior selectivity for Mg2+ over Ca2+ enabled the detection of intracellular Mg2+ concentration changes without any response to Ca2+ influx. The new probes are potential keys to elucidating intracellular Mg2+ dynamics under conditions of extremely sharp Ca2+ fluctuation.