Journal of Fluorescence

, Volume 7, Issue 1, pp 11–15

Fluorescence lifetime imaging of oxygen in living cells

  • H. C. Gerritsen
  • R. Sanders
  • A. Draaijer
  • C. Ince
  • Y. K. Levine
Article

DOI: 10.1007/BF02764572

Cite this article as:
Gerritsen, H.C., Sanders, R., Draaijer, A. et al. J Fluoresc (1997) 7: 11. doi:10.1007/BF02764572

Abstract

The usefulness of the fluorescent probe ruthenium tris(2,2′-dipyridyl) dichloride hydrate (RTDP) for the quantitative imaging of oxygen in single cells was investigated utilizing fluorescence lifetime imaging. The results indicate that the fluorescence behavior of RTDP in the presence of oxygen can be described by the Stem-Volmer equation. This shows that fluorescence quenching by oxygen is a dynamic quenching process. In addition, it was demonstrated that the fluorescence lifetime of RTDP is insensitive to pH, ion concentration, and cellular contents. This implies that a simple calibration procedure in buffers can be used to quantify oxygen concentrations within cells. First fluorescence imaging experiments on J774 macrophages show a nonuniform fluorescence intensity and a uniform fluorescence lifetime image. This indicates that the RTDP is heterogeneously partitioned throughout the cells, while the oxygen concentration is constant.

Key Words

Fluorescence lifetime imagingoxygen imagingconfocal microscopymacrophages

Copyright information

© Plenum Publishing Corporation 1997

Authors and Affiliations

  • H. C. Gerritsen
    • 1
  • R. Sanders
    • 1
    • 2
  • A. Draaijer
    • 2
  • C. Ince
    • 1
  • Y. K. Levine
    • 1
  1. 1.Department of Molecular BiophysicsUtrecht UniversityTA UtrechtThe Netherlands
  2. 2.TNOInstitute of Environmental Sciences, Group SensorsJA DelftThe Netherlands