Journal
ACS SENSORS
Volume 3, Issue 1, Pages 59-64Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssensors.7b00831
Keywords
fluorescent probe; fluorescein; KO2; superoxide; mitochondria -targeting; lysosome-targeting; dual targetable
Funding
- NSFC [21372063, 81601173]
- Shanghai Municipal Science & Technology Program [16411968700]
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A novel water-soluble fluorescein-based fluorescent probe for superoxide detection was developed. The probe is fairly stable under neutral and acidic conditions. It can be used to detect superoxide both in solution with the detection limit of 2.2 mu M and in living cells. Cell imaging experiments indicated that such a probe displayed good cell penetration and O-2(center dot-) could be detected with PMA-stimulated HepG2 cells in both mitochondria and lysosome. Such a probe is the first dual mitochondria and lysosome-targetable fluorescent chemodosimeter. Additionally, O-2(center dot-) in intact live zebrafish embryos was successfully visualized under PMA-stimulated conditions, and the possible detection mechanism was studied as well.
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