A highly sensitive long-wavelength fluorescence probe for nitroreductase and hypoxia: selective detection and quantification

A novel long-wavelength fluorescence probe NBP has been developed for the detection of nitroreductase (NTR) and hypoxia. NBP could be activated by NTR at 0.1 μM to release the fluorophore NBF and significant changes in fluorescence emission at 658 nm were observed. This feature makes it advantageous for imaging hypoxic cells with minimal endogenous interference.