Unscheduled DNA synthesis in cultured ataxia telangiectasia fibroblast-like cells

R. A. Vincent, A. J. Fink, P. C. Huang

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


The capacity of cultured fibroblast-like cells from 5 ataxia telangiectasia (AT) patients to repair γ-ray-induced damage formed in DNA under aerobic conditions was measured by unscheduled DNA synthesis (UDS). The AT cultures exhibited generally reduced UDS compared to the normal cultures for γ-ray doses of 4–12 kR. Reduced UDS in the AT cultures was observed for repair-incubation periods at which UDS was not saturated (0.5 and 1 h), and for periods characterized by maximal amounts of UDS in both the normal and AT cultures (2 and 4 h). The results suggest a class of lesions repairable in the normal cells by UDS within 1 h many persist in the AT cells for 4 h or longer.

Original languageEnglish (US)
Pages (from-to)245-249
Number of pages5
JournalMutation Research - Fundamental and Molecular Mechanisms of Mutagenesis
Issue number2
StatePublished - 1980
Externally publishedYes

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Health, Toxicology and Mutagenesis


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