A sequentially activated bioluminescent probe for observation of cellular H2O2 production induced by cysteine†
Abstract
We report herein a caged luciferin probe Cy-Hy as a sequentially activated probe to selectively and sensitively sense L-Cys and H2O2. The probe displayed fluorescence and bioluminescence responses toward the two analytes. Utilizing the present probe, cellular excess L-Cys-induced H2O2 up-regulation was observed for the first time in living MDA-MB-231 cells.