The use of flow cytometry in the detection of radiation- and chemically induced nuclear damage in human mononuclear cells

D. J. Gordon, A. E. Milner, Andrew T M Vaughan, J. K. Chipman

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Viable human mononuclear cells were treated with three known genotoxic agents, gamma radiation, bleomycin sulphate (BLM) and acetylaminofluorene (AAF). Following treatment, a high salt concentration buffer was used to disrupt the cells, releasing supercoiled DNA structures known as nucleoids. The nucleoids were treated with the fluorescent dye ethidium bromide, and exposed to a beam of laser light within a fluorescence activated cell sorter (FACS). Treatment of human mononuclear cells with the genotoxic agent BLM or with radiation prior to cell disruption and staining produced a dose-dependent increase in light scatter. However, treatment of human mononuclear cells with AAF, which requires metabolic activation, produced a dose response in light scatter that proved reversible and was not dependent on the formation of reactive metabolites. In the case of BLM and radiation, these changes in light scatter are interpreted as structural alterations in the nucleus partially induced by free radical attack, and thus provide an indication of the DNA damaging ability of the agent used. In contrast the reversible changes in light scatter seen with AAF may only indicate the ability of this agent to penetrate the genome. The significance of this reversible interaction with respect to genotoxicity is not known.

Original languageEnglish (US)
Pages (from-to)35-38
Number of pages4
JournalMutagenesis
Volume4
Issue number1
DOIs
StatePublished - Jan 1989
Externally publishedYes

Fingerprint

Flow Cytometry
Flow cytometry
Damage
Radiation
Scatter
2-Acetylaminofluorene
Cell
Bleomycin
Light
Dosimetry
DNA
Cells
Superhelical DNA
Free Radicals
Ethidium
Dose-response
Dependent
Gamma Rays
Metabolites
Dyes

ASJC Scopus subject areas

  • Statistics, Probability and Uncertainty
  • Applied Mathematics
  • Health, Toxicology and Mutagenesis
  • Toxicology
  • Genetics(clinical)
  • Genetics

Cite this

The use of flow cytometry in the detection of radiation- and chemically induced nuclear damage in human mononuclear cells. / Gordon, D. J.; Milner, A. E.; Vaughan, Andrew T M; Chipman, J. K.

In: Mutagenesis, Vol. 4, No. 1, 01.1989, p. 35-38.

Research output: Contribution to journalArticle

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