Abstract
Discriminating living and dead cells is of great significance for the study of apoptosis. In this work, we have developed a unique fluorescent probe (RPIC) for discriminating live and dead cells with duel-channel fluorescence imaging under double excitation and double emission mode. Dead cells treated with RPIC shows weak fluorescence signals in red channel, however, strong fluorescence signals are appeared in red channel in live cells. Weak and strong green fluorescence signals present at live cells and dead cells, respectively. Moreover, RPIC can detect successfully apoptosis of cancer cells. For in-vivo imaging, RPIC can discriminate successfully live and dead zebrafish with the same method. More interestingly, it is found that RPIC possesses the ability of discriminating normal mice and tumor mice.
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