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Application of Genetically Encoded Fluorescent Nitric Oxide (NO•) Probes, the geNOps, for Real-time Imaging of NO• Signals in Single Cells
Published on: March 16, 2017
Development of a novel rhodamine-type fluorescent probe to determine peroxynitrite
Xiao-Feng Yang1, Xiang-Qun Guo, Yi-Bing Zhao
1Department of Chemistry and the Key Laboratory of Analytical Sciences of MOE, Xiamen University, Xiamen 361005, Fujian, PR China.
Abstract:
A novel method for the determination of peroxynitrite using rhodamine B hydrazide as a fluorogenic probe is described. The method is based on the oxidation of rhodamine B hydrazide, a colorless, non-fluorescent substance, by peroxynitrite to give rhodamine B-like fluorescence emission. The fluorescence increase is linearly related to the concentration of peroxynitrite in the range of 7.5x10(-8)-3.0x10(-6) mol l(-1) with a detection limit of 2.4x10(-8) mol l(-1) (3sigma). The optimal conditions for the detection of peroxynitrite were evaluated and the possible detection mechanism was also discussed in this paper.
