Synchronized human diploid fibroblasts: Progression capabilities of a subpopulation that fails to keep pace with the predominant, rapidly dividing cohort of cells
✍ Scribed by R. A. Tobey; N. Oishi; H. A. Crissman
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- English
- Weight
- 882 KB
- Volume
- 139
- Category
- Article
- ISSN
- 0021-9541
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✦ Synopsis
Highly synchronized cultures of HSF-55 human diploid fibroblasts contain subpopulations of cells with intact plasma membranes that do not participate in the parasynchronous division wave. To determine the fate of these laggard cells, cultures were incubated with BrdU for variable periods to label newly replicated DNA in both the readily synchronizable and nonsynchronizable subpopulations. The kinetics of labeling with BrdU were determined with a two-laser flow cytometric technique that did not employ antibody to BrdU, but instead monitored emission of fluorescence from DNA-specific stains that differed in the degree of BrdU-induced quenching of their fluorescence signals. Approximately