Sensing Peroxynitrite in Different Organelles of Murine RAW264.7 Macrophages With Coumarin-Based Fluorescent Probes

Maria Weber, Namiko Yamada, Xue Tian, Steven D. Bull, Masafumi Minoshima, Kazuya Kikuchi, Amanda B. Mackenzie, Tony D. James

Research output: Contribution to journalArticle


The elucidation of biological processes involving reactive oxygen species (ROS) facilitates a better understanding of the underlying progression of non-communicable diseases. Fluorescent probes are a powerful tool to study various ROS and have the potential to become essential diagnostic tools. We have developed a series of coumarin fluorescent probes for the selective and sensitive detection of peroxynitrite (ONOO), a key ROS. Coumarin based probes exhibit good photostability, large Stokes shift and high quantum yields. The three ratiometric probes all contain a boronate ester motif for the detection of ONOO and a distinctive organelle targeting group. The study of ONOO generation in a particular organelle will allow more precise disease profiling. Hence, targeting groups for the mitochondria, lysosome and endoplasmic reticulum were introduced into a coumarin scaffold. The three ratiometric probes displayed sensitive and selective detection of ONOO over other ROS species. All three coumarin probes were evaluated in murine RAW264.7 macrophages for detection of basal and stimulated ONOO formation.

Original languageEnglish
Article number39
JournalFrontiers in Chemistry
Publication statusPublished - 20 Feb 2020


  • fluorescence
  • inflammation
  • molecular probe
  • peroxynitrite
  • reactive oxygen species

ASJC Scopus subject areas

  • Chemistry(all)

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