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. 1982;1(6):701–703. doi: 10.1002/j.1460-2075.1982.tb01233.x

Enhanced mutagenesis parallels enhanced reactivation of herpes virus in a human cell line.

C D Lytle, D C Knott
PMCID: PMC553271  PMID: 6329698

Abstract

U.v. irradiation of human NB-E cells results in enhanced mutagenesis and enhanced reactivation of u.v.-irradiated H-1 virus grown in those cells ( Cornelis et al., 1982). This paper reports a similar study using herpes simplex virus (HSV) in NB-E cells. The mutation frequency of HSV (resistance of virus plaque formation to 40 micrograms/ml iododeoxycytidine ) increased approximately linearly with exposure of the virus to u.v. radiation. HSV grown in unirradiated cells gave a slope of 1.8 X 10(-5)m2/J, with 3.2 X 10(-5)m2/J for HSV grown in cells irradiated (3 J/m2) 24 h before infection. There was no evidence for mutagenesis of unirradiated virus by irradiated cells, as seen with H-1 virus. Enhanced reactivation of irradiated HSV in parallel cultures increased virus survival, manifested as a change in slope of the final component of the two-component survival curve from a D0 of 27 J/m2 in unirradiated cells to 45 J/m2 in irradiated cells. Thus, enhanced mutagenesis and enhanced reactivation occurred for irradiated HSV in NB-E cells. The difference in the enhanced mutagenesis of HSV (dependent on damaged DNA sites) and of H-1 virus (primarily independent of damaged DNA sites) is discussed in terms of differences in DNA polymerases.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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