Ao X, Bright SA, Taylor NC, Elmes RBP. 2-Nitroimidazole based fluorescent probes for nitroreductase; monitoring reductive stress in cellulo.
Org Biomol Chem 2017;
15:6104-6108. [PMID:
28715020 DOI:
10.1039/c7ob01406f]
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Abstract
Two 2-nitroimidazole-1,8-naphthalimide conjugates, 1 and 2, have been synthesised as fluorescence probes for the detection of reductive stress in HeLa cells. The 4-substituted derivative 1 was shown to act as a highly sensitive and selective substrate for nitroreductase where it exhibited a clear blue to green ratiometric fluorescence response visible to the naked eye. Moreover, biological studies demonstrated 1 could be activated in cellulo where the impact of reductive stress was easily monitored using confocal microscopy and flow cytommetry.
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