Aphidicolin does not inhibit DNA repair synthesis in ultraviolet-irradiated HeLa cells. A radioautographic study

Biochem J. 1981 Nov 1;199(2):453-5. doi: 10.1042/bj1990453.


A radioautographic examination of nuclear DNA synthesis in unirradiated and u.v.-irradiated HeLa cells, in the presence and in the absence of aphidicolin, showed that aphidicolin inhibits nuclear DNA replication and has no detectable effect on DNA repair synthesis. Although the results establish that in u.v.-irradiated HeLa cells most of the DNA repair synthesis is not due to DNA polymerase alpha, they do not preclude a significant role for this enzyme in DNA repair processes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aphidicolin
  • Autoradiography
  • Cells, Cultured
  • DNA / biosynthesis
  • DNA Polymerase II / antagonists & inhibitors*
  • DNA Repair / drug effects*
  • Diterpenes / pharmacology*
  • HeLa Cells / drug effects
  • HeLa Cells / metabolism
  • HeLa Cells / radiation effects
  • Humans
  • Nucleic Acid Synthesis Inhibitors*
  • Ultraviolet Rays


  • Diterpenes
  • Nucleic Acid Synthesis Inhibitors
  • Aphidicolin
  • DNA
  • DNA Polymerase II