anticancer drug and a near-infrared (NIR) fluorescence dye turn-on. Furthermore, contrast to the free anticancer drug, the prodrug exhibited higher cytotoxicity to hepatoma cells than that to normal HL-7702 cells. Thus, prodrug 4 is a promising platform for specific tumor-activatable drug delivery system, because of its favorable features of in situ and in vivomonitoring of the drugrelease and therapeutic
Here we report the synthesis and screening of Cy-3-NO2 that showed simultaneous fluorescence sensing ability towards glutathione and cysteine under single excitation, and its application in living cell imaging.
We have described a turn-on near-infrared fluorescent probe Cy–NO2 based on nitro group reduction for intracellular H2S detection. The probe employs cyanine dye as a fluorophore, and is equipped with a nitro group as a fluorescent modulator. It is readily employed for assessing intracellular H2S level changes, and confocal imaging is achieved successfully.