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Description

Hypochlorous acid (HOCl) is a highly potent reactive oxygen species (ROS) and helps eliminate pathogens in the innate immune system. Mounting evidence indicates that intracellular HOCl plays additional important roles in regulating inflammation and cellular apoptosis. Subcellular detection of HOCL is currently limited due to low concentration, strong oxidization, and short lifespan of the analyte.The BioTracker LYSO-TP dye is a live cell two-photon green fluorescent turn-on imaging probe for HOCL. The probe targets HOCL specifically in the lysosomes of cells. The probe exhibit fast response times, good selectivity, and high sensitivity towards hypochlorous acid in living cells. Acedan was chosen as the fluorescence reporting group due to its excellent photophysical properties resulting from the typical push-pull (amineketone) structure. Reaction of the probe with HOCl, which deprotects the oxathiolane/mercaptal group to reveal the ketone, would lead to fluorescence enhancement. To monitor subcellular HOCL levels, morpholine was introduced at a long distance from the reaction site to ensure the probes intracellular localization.Spectral PropertiesAbsorbance: 375nmEmission: 500nm