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Bioimaging of Nitric Oxide with Fluorescent Indicators Based on the Rhodamine Chromophore

Kojima, Hirotatsu, Hirotani, Miki, Nakatsubo, Naoki, Kikuchi, Kazuya, Urano, Yasuteru, Higuchi, Tsunehiko, Hirata, Yasunobu, Nagano, Tetsuo·2001·Analytical Chemistry

Abstract

Diaminofluoresceins are widely used for detection and imaging of nitric oxide (NO), but for biological applications, they have the disadvantages that the fluorescence of the fluorescein chromophore is pH-sensitive and overlaps the autofluorescence of cells. We have developed a membrane-permeable fluorescent indicator for NO based on the rhodamine chromophore, DAR-4M AM, which can be excited with 550-nm light. The fluorescence quantum yield of the product after reaction with NO is 840 times higher than that of DAR-4M. The detection limit of NO was 7 nM, and the fluorescence showed no pH dependency above pH 4. DAR-4M AM was successfully applied to practical bioimaging of NO produced in bovine aortic endothelial cells.

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Metadata

Authors
Kojima, H., Hirotani, M., Nakatsubo, N., Kikuchi, K., Urano, Y., Higuchi, T., Hirata, Y., & Nagano, T.
Venue
Analytical Chemistry
Published
2001-03-24
Volume
73
Issue
9
Pages
1967-1973
ISSN
  • 0003-2700 (ISSN-L)
  • 1520-6882
OpenAlex
W1980039414
Cited by
292
References
0
FWCI
4.52
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Bioimaging of Nitric Oxide with Fluorescent Indicators Based on the Rhodamine Chromophore. https://app.cochat.ai/papers/10.1021/ac001136i
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Kojima, H., Hirotani, M., Nakatsubo, N., Kikuchi, K., Urano, Y., Higuchi, T., Hirata, Y., & Nagano, T. (2001). Bioimaging of Nitric Oxide with Fluorescent Indicators Based on the Rhodamine Chromophore. Analytical Chemistry. https://doi.org/10.1021/ac001136i

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