UNIT 7.2 Critical Aspects in Analysis of Cellular DNA Content
Published Online: 1 APR 2011
Copyright © 2011 by John Wiley & Sons, Inc.
Lab Protocol Title
Current Protocols in Cytometry
How to Cite
Darzynkiewicz, Z. 2011. Critical Aspects in Analysis of Cellular DNA Content. Current Protocols in Cytometry. 56:7.2.1–7.2.8.
- Published Online: 1 APR 2011
- Published Print: APR 2011
This unit covers general aspects of DNA content analysis and provides introductory or complementary information to the specific protocols of DNA content assessment in this chapter. It describes principles of DNA content analysis and outlines difficulties and pitfalls common to these methods. It also reviews methods of DNA staining in live, permeabilized, and fixed cells, and in cell nuclei isolated from paraffin-embedded tissues, as well as the approaches to stain DNA concurrently with cell immunophenotype. This unit addresses factors affecting accuracy of DNA measurement, such as chromatin features restricting accessibility of fluorochromes to DNA, stoichiometry of interaction with DNA, and “mass action law” characterizing binding to DNA in relation to unbound fluorochrome concentration. It also describes controls to ensure accuracy and quality control of DNA content determination and principles of DNA ploidy assessment. Because many aspects of DNA content analysis are common to protocols in units 7.3, 7.6, 7.16, 7.20, 7.23, & 7.25, certain parts of this unit provide information redundant with commentaries in these units. Curr. Protoc. Cytom. 56:7.2.1-7.2.8. © 2011 by John Wiley & Sons, Inc.
- cell cycle;
- DNA index;