Work performed under the auspices of the United States Department of Energy by the Los Alamos National Laboratory.
Rapid, one step staining procedures for analysis of cellular DNA and protein by single and dual laser flow cytometry†
Article first published online: 8 MAR 2005
Copyright © 1982 Wiley-Liss, Inc.
Volume 3, Issue 2, pages 84–90, September 1982
How to Cite
Crissman, H. A. and Steinkamp, J. A. (1982), Rapid, one step staining procedures for analysis of cellular DNA and protein by single and dual laser flow cytometry. Cytometry, 3: 84–90. doi: 10.1002/cyto.990030204
- Issue published online: 16 JUN 2005
- Article first published online: 8 MAR 2005
- Manuscript Accepted: 8 APR 1982
- Manuscript Received: 16 DEC 1981
- Simultaneous DNA-protein analysis;
- cell staining;
- flow cytometry
Detailed, simplified techniques are described for simultaneous staining and analysis of DNA and protein in a number of mammalian cell types. Cell staining involves the addition of appropriate dye mixtures to unfixed or ethanol-fixed cells and subsequent analysis of cell populations in the staining reagents generally within 10 to 20 minutes. The approach is novel in that no centrifugation steps are involved during the staining procedure, thus, eliminating cell clumping and cell loss and making the procedures appropriate for samples containing limited numbers of cells.
For single wavelength analysis, staining of DNA and protein in ethanol-fixed cells was accomplished with a dye solution containing propidium iodide, fluorescein isothiocyanate and RNase. After 20 minutes at room temperature cells were analyzed using the 488 nanometer (nm) laser excitation line. For dual laser analysis the following dye combinations were employed without RNase: mithramycin-rhodamine 640, mithramycin-substituted rhodamine isothiocyanate, Hoechst 33342-rhodamine 640 and Hoechst 33342-rhodamine isothiocyanate. Unfixed cells were also stained with the Hoechst 33342-rhodamine 640 dye combination. Mithramycin was excited at 457.9 nm, Hoechst 33342 at 333–363 nm, and the rhodamine dyes at 568 nm.
Cell types analyzed included Chinese hamster ovary cells, cultured mouse colon 26 cells, mouse embryo forelimb bud cells, and rat cell samples obtained by lung lavage.