Mitokyne: a ratiometric raman probe for mitochondrial pH

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Mitochondrial pH (pHmito) is intimately related to mitochondrial function and aberrant values for pHmito are linked to several disease states. We report the design, synthesis and application of mitokyne 1 – the first small molecule pHmito sensor for Stimulated Raman Scattering (SRS) microscopy. This ratiometric probe can determine subtle changes in pHmito in response to external stimuli and the inhibition of both the electron transport chain and ATP synthase with small molecule inhibitors. In addition, 1 was also used to monitor mitochondrial dynamics in a time-resolved manner with subcellular spatial resolution during mitophagy providing a powerful tool for dissecting the molecular and cell biology of this critical organelle.
Original languageEnglish
Pages (from-to)12786-12792
Number of pages7
JournalAnalytical Chemistry
Issue number37
Early online date10 Sep 2021
Publication statusPublished - 21 Sep 2021


  • mitokyne
  • ratiometric
  • raman probe
  • mitochondrial pH
  • Stimulated Raman scattering (SRS)


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