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Improved flow cytometric analysis of the budding yeast cell cycle
Steven B Haase1, Steven I Reed
1Department of Molecular Biology, MB7; The Scripps Research Institute; La Jolla, California 92037, USA. haase@scripps.edu.
Cell Cycle (Georgetown, Tex.)
|November 14, 2002
Summary
SYTOX Green offers improved accuracy for yeast cell cycle analysis compared to propidium iodide. This DNA dye enhances flow cytometry by providing better linearity and reduced variability in DNA content measurements.
Area of Science:
- Molecular Biology
- Cell Biology
- Biotechnology
Background:
- Saccharomyces cerevisiae is a key model organism for studying eukaryotic cell cycle regulation.
- Flow cytometry is a standard technique for analyzing cell cycle progression in yeast.
- Propidium iodide, a common DNA dye, has limitations that hinder accurate flow cytometry analysis.
Purpose of the Study:
- To evaluate the effectiveness of SYTOX Green as an alternative DNA binding dye for yeast cell cycle analysis.
- To address the drawbacks associated with propidium iodide in flow cytometry protocols.
Main Methods:
- Utilized SYTOX Green, a DNA binding dye, for flow cytometric analysis of DNA content in Saccharomyces cerevisiae.
- Compared SYTOX Green with propidium iodide in terms of key flow cytometry performance metrics.
Main Results:
- SYTOX Green demonstrated superior performance with better coefficients of variation.
- Improved linearity was observed between DNA content and fluorescence intensity using SYTOX Green.
- Reduced peak drift was noted with SYTOX Green, irrespective of dye concentration, growth conditions, or cell size.
Conclusions:
- SYTOX Green is a valuable and effective alternative to propidium iodide for yeast cell cycle analysis.
- The use of SYTOX Green enhances the accuracy and reliability of flow cytometry in studying yeast cell cycle progression.