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Increased sensitivity to cell killing and mutagenesis by chemical mutagens in thymidine-kinase-deficient subclones of a Friend murine leukaemia cell line*

Published online by Cambridge University Press:  14 April 2009

P. G. McKenna  and
A. A. Yasseen
P. G. McKenna
Affiliation:
Department of Nursing Studies, the New University of Ulster, Coleraine BT52 1SA, Northern Ireland
A. A. Yasseen
Affiliation:
Department of Nursing Studies, the New University of Ulster, Coleraine BT52 1SA, Northern Ireland
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Summary

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Wild-type Friend murine leukaemia (clone 707) cells and two thymidinekinase-deficient subclones, 707BUE and 707BUF, were compared for sensitivity to killing and mutagenesis by the chemical mutagens, ethyl methane sulphonate (EMS), N-methyl-N′-nitro-N-nitrosoguanidine (MNNG), mitomycin C (MMC), and methyl methane sulphonate (MMS). The two thymidine-kinase-deficient subclones were significantly more sensitive to killing by each of the four chemical mutagens than were wild-type cells. The increased sensitivity to killing by the four mutagens was also reflected in increased mutagenesis (per unit dose of mutagen) to 6-thioguanine resistance. In the light of these results, the significance of thymidine kinase in DNA repair and mutagenesis is discussed.

Type
Short Papers
Information
Genetics Research , Volume 40 , Issue 2 , October 1982 , pp. 207 - 212
Copyright
Copyright © Cambridge University Press 1982

References

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