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August 26, 2009 - 1-2 It is widely used for determining cell viability since the fluorescence intensity of calcein is proportional to the amount of live cells. Calcein is a photostable reagent and is well retained in the cytoplasm of live cells. Calcein is not influenced by intracellular pH. Its bright green fluorescence can be monitored at Ex/Em=494nm /520 nm.
Amongst other reagents, including BCECF, AM and Carboxy-fluorescein diacetate, Calcein AM is the most suitable indicator for staining viable cells due to its low cytotoxicity property. Calcein AM does not affect cell proliferation or viability.2-3 Calcein AM is used in cell invasion, adhesion, migration and other cell-based assays.
AnaSpec provides Calcein AM at two purity grades, >90% or >95%, as determined by HPLC. AnaSpec also offers the SensoLyte® Calcein Cell Viability Assay Kit - a rapid and sensitive assay to detect viable cells. This kit provides ample reagents (dye and assay buffer) for 1000 assays in a 96-well plate format.
References
1.Braut-Boucher, F. et al. J. Immunol. Methods 178, 41 (1995).
2.Akeson, AL. et al. J. Immunol. Methods 163, 181 (1993).
3.Weston , SA. et al. J. Immunol. Methods 133,
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AnaSpec is a leading provider of integrated proteomics solutions to the world’s largest biotech, pharmaceutical, and academic research institutions. With a vision for innovation through synergy, AnaSpec focuses on three core technologies: peptides, detection reagents, and antibodies.
For more information visit www.anaspec.com
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