A highly selective fluorescent probe for monitoring exogenous and endogenous ONOO fluctuations in HeLa cells

Wei Shu, Yulong Wu, Qingxia Duan, Shunping Zang, Sa Su, Jing Jing, Xiaoling Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

As a typical reactive oxygen species, peroxynitrite (ONOO) plays vital roles in various biological functions and pharmacological activities. Specific, sensitive and rapid fluorescent probes are helpful tools for monitoring endogenous peroxynitrite. In this work, a highly selective fluorescent probe BTCBE was designed based on benzothiazole-2-acetonitrile and 4-formylphenylboronic acid pinacol cyclic ester. BTCBE showed the merits of rapid response (<1 min) and prominent sensitivity (LOD = 4.7 nM). It showed an excellent selectivity towards ONOO over NaClO and H2O2. Moreover, BTCBE was successfully used for bioimaging exogenous and endogenous ONOO in HeLa cells.

Original languageEnglish
Article number108069
JournalDyes and Pigments
Volume175
DOIs
Publication statusPublished - Apr 2020

Keywords

  • Bioimaging
  • Colorimetric
  • Cyanovinylene dye
  • Fluorescent probe
  • Peroxynitrite

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