期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 301, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2019.127116
关键词
Hydrogen sulfide; Mitochondria-targeted; Near-infrared; Bioimaging
资金
- Natural Science Foundation of China [21807021]
- Key Laboratory of Medicinal Chemistry
- Priority Strategy Project of Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education [ts2019004]
- Hebei Province Science Foundation for Youth [B2017201093]
- Hebei University Science Foundation for High-level personnel
As an important biological messenger and effector molecule, hydrogen sulfide (H2S) not only is involved in maintaining the physiological function in cardiovascular, immune and nervous systems but also controls the activity of mitochondrial atpase and antioxidant stress in living cells. Herein, a new PET-based mitochondria-targeted NIR probe Mito-N-3 with good selectivity and high sensitivity for H2S was presented in this work. The free probe has no fluorescence, however, once reacts with H2S, Mito-N-3 goes through an analyze-prompted immolation, resulting in the releasing of the fluorophore (Mito - OH) and the concomitant restoring of remarkable fluorescence in the NIR emission at 736 nm. The detection limit was calculated as low as 20 nM. Most importantly, fluorescence imaging experiments showed that the probe can monitor the intracellular H2S level in mitochondria of MCF-7 cells, the probe Mito-N-3 also had the potential application in sensing and tracking H2S in living nude mice.
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