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Bio-Rad MitoPT™ JC-1, TMRE & TMRM Apoptosis Kits

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MitoPT™ JC-1, TMRE and TMRM Kits for Detection of Apoptosis through the Mitochondrial Permeability Transition Event

  • Choice – MitoPT™ JC-1, TMRE & TMRM Kits
  • Quick & easy staining method clearly differentiates non-apoptotic & apoptotic cells
  • MitoPT™ TMRE & TMRM Kits - ideal for single cell multi-parametric analyses
  • Suitable for flow cytometry, fluorescence microscopy or a plate reader

An early indication of apoptosis involves a collapse in the electrochemical gradient across the mitochondrial membrane. This is mediated by the opening of permeability transition (PT) pores and is known as the mitochondrial PT event. It is measured by the change in the mitochondrial membrane potential.

Loss of mitochondrial membrane potential can be detected by three fluorescent cationic dyes:

  • 5,5’,6,6’-tetrachloro-1,1’,3,3’-tetraethylbenzimidazolocarbocyanine iodide (JC-1)
  • Tetramethylrhodamine ethyl ester (TMRE) and
  • Tetramethylrhodamine methyl ester (TMRM)

As apoptosis occurs and the mitochondrial membrane potential collapses, the dyes disperse throughout the cell and the fluorescence either diminishes (MitoPT™ TMRE and TMRM kits) or changes color (MitoPT™ JC-1 kit).

This alteration in fluorescence allows an easy distinction between non-apoptotic and apoptotic cells which can be read with a flow cytometer, fluorescence microscope or fluorescence plate reader.

MitoPT™ KitNon-apoptotic cellsApoptotic cells
JC-1 Red fluorescence Green fluorescence
TMRE Orange fluorescence Weak orange fluorescence
TMRM Orange fluorescence Weak orange fluorescence

View the other sections in our quality apoptosis antibodies and kits product range:


  1. Antonsson, B., et al. (2000) Biochem J. 345:271-278
  2. Cossarizza, A., et al. (1993) Biochem. Biophys. Res. Commun. 197:40-45
  3. Desagher, S., et al. (1999) J. Cell Biol. 144:891-901
  4. Kroemer, G. and J.C. Reed. (2000). Nature Med. 6(5): 513-519
  5. Luo, X., et al. (1998) Cell 94:481-490
  6. Reers, M., et al. (1991) Biochemistry 30:4480-4486
  7. Smiley, S. T., et al. (1991) Proc. Natl. Acad. Sci. 88:3671-3675
  8. Wlodkowic, D., J. Skommer, and J. Pelkonen. (2006). Leukemia Res30:1187-1192.

MitoPT™ is a trademark of Immunochemistry Technologies, LLC.