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MitoTracker™ Orange CM-H2TMRos - Special Packaging, 20 x 50 μg, 20 x 50 μg - FAQs

View additional product information for MitoTracker™ Dyes for Mitochondria Labeling - FAQs (M22426, M22425, M7514, M7512, M7513, M7510, M7511)

2 product FAQs found

It looks like my Mitotracker dye is staining more than just the mitochondria. Why?

This is typically a result of using too high of a concentration of the Mitotracker dye. Most organic dyes are used in the low micromolar range. The MitoTracker dyes are used at a much lower concentration, around 50–200 nanomolar. Higher concentrations can cause background fluorescence and non-mitochondrial staining.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

I am testing mitochondrial membrane potential, but my untreated cells are fluorescing, and I'm not seeing a significant difference in my test sample.

Regardless of which dye you use - tetramethylrhodamine, methyl ester (TMRM), JC-1 or MitoTracker - untreated cells will fluoresce. It's just that cells with reduced mitochondrial membrane potential will fluoresce less. It is the degree of change which is important. JC-1 dye not only changes intensity, but has a ratiometric spectral change in excitation and emission. It is very important to have an untreated control as well as a positive control treated with a mitochondrial membrane potential destabilizer, such as CCCP or FCCP. Most mitochondrial stains are only for use with live cells, as the signal will not be retained to the same degree with fixation.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.