Abstract
A new method (viral suicide method) for the isolation of UV-sensitive mutants is described. Colonies of mutagenized human FL cells were infected with UV-irradiated Herpes simplex viruses and surviving ones which seemed to be deficient in host cell reactivation (HCR) were examined for their UV sensitivity. Nineteen of 238 clones examined were sensitive to UV irradiation at the time of the isolation. After recloning, four of these clones have been studied and two (UVS-1 and UVS-2) of them are stable in their UV sensitivity for 4 months in culture. UV sensitivity of UVS-1, UVS-2, and the parental FL cells are as follows: the extrapolation numbers (n) are 2.2, 2.1, and 1.8 and mean lethal doses (D0) are 2.9, 3.7, and 7.8 J/m2 for UVS-1, UVS-2, and the parental FL cells, respectively. They are no more sensitive than FL cells to X- irradiation. The ability of HCR in UVS-2 cells is apparently lower than that in FL cells, whereas UVS-1 cells are the same as FL cells in the ability.
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Shiomi, T., Sato, K. Isolation of UV-sensitive variants of human FL cells by a viral suicide method. Somat Cell Mol Genet 5, 193–201 (1979). https://doi.org/10.1007/BF01539160
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DOI: https://doi.org/10.1007/BF01539160