Use of fluorescence threshold triggering and high-speed flow cytometry for rare event detection
Version of Record online: 8 MAR 2005
Copyright © 1995 Wiley-Liss, Inc.
Volume 22, Issue 4, pages 317–322, 15 December 1995
How to Cite
Rehse, M. A., Corpuz, S., Heimfeld, S., Minie, M. and Yachimiak, D. (1995), Use of fluorescence threshold triggering and high-speed flow cytometry for rare event detection. Cytometry, 22: 317–322. doi: 10.1002/cyto.990220408
- Issue online: 20 JUN 2005
- Version of Record online: 8 MAR 2005
- Manuscript Accepted: 19 JUN 1995
- Manuscript Received: 14 JUN 1995
- Flow cytometry;
- minimal residual disease;
- tumor cell purging;
- rare events;
A simple rare event detection method utilizing dual-parameter flow cytometry is described, which allows quantitation of specific cellular events at the level of two cells in 107 total cells. Using a standard unmodified single laser flow cytometer sampling at a rate of 25,000 events/sec and a fluorescence discriminator, 107 total cells are processed in 7 min. The assay involves precise characterization of instrument flow rates to calculate total events processed by the cytometer rather than accumulate total events in computer memory. This method of detecting rare events is demonstrated by using a model system of breast cancer cells labeled with a metabolically activated dye and serially diluted into normal peripheral blood. Potential applications include validation of methods to detect minimum residual disease following myeloablative therapy, detection of any remaining tumor cells following purging methods, and validation of methods to detect circulating fetal cells in maternal blood. © 1995 Wiley-Liss, Inc.