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SOS-type functions in mammalian cells. Enhanced reactivation of UV-irradiated SV 40 in UV-irradiated CV-1 cells.

作者信息

Hagedorn R, Thielmann H W, Fischer H

出版信息

J Cancer Res Clin Oncol. 1985;109(2):89-92. doi: 10.1007/BF00391881.

Abstract

The reactivation of UV-irradiated SV 40 was measured in UV-irradiated CV-1 cells as a function of time between irradiation of the cells and infection. To avoid the possible bias of multiplicity reactivation and/or virus propagation, infection was quantitated in terms of V-antigen-positive nuclei at the end of the first lytic cycle. In irradiated cell cultures enhanced reactivation of SV 40 was observed, which indicates induction of DNA repair enzymes. Maximal reactivation was obtained when the time interval between irradiation and infection was 72 h. The UV-inducible DNA repair enzymes might represent elements of an SOS-type response in mammalian cells.

摘要

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