A Ratiometric Fluorescent Nanoprobe for Ultrafast Imaging of Peroxynitrite in Living Cells
Overview
Affiliations
For ratiometrically imaging peroxynitrite (ONOO) in living cells, we devised and fabricated a novel fluorescent nanoprobe, NC-NP, in this study. To achieve ratiometric fluorescence response towards ONOO, NC-NP used 3-(2-benzothiazolyl) coumarin (Cou-Bz) as the internal reference and 1,8-naphthimide derivative (Naph-PN) as a fluorescent ONOO probe. These compounds were incorporated into an amphiphilic block polymer called Pluronic F-127. In addition to an ultrafast response to ONOO, NC-NP also showed great selectivity and sensitive detection (detection limit was 4.51 μM). It was important to note that NC-NP demonstrated solid performance for ONOO fluorescence ratio imaging in living cells, highlighting its potential for ONOO-related chemical biology research.
Lv J, Chen F, Zhang C, Kang Y, Yang Y, Zhang C Biosensors (Basel). 2024; 14(10).
PMID: 39451719 PMC: 11506598. DOI: 10.3390/bios14100506.