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  • Title: [Effect of UV irradiation on the mitotic cycle of Chinese hamster cells with varying UV sensitivity. I. The time ratios after irradiation of the cells with UV light].
    Author: Kirillova TV, Rozanov IuM, Martynova IM.
    Journal: Tsitologiia; 1985 Nov; 27(11):1285-91. PubMed ID: 4089956.
    Abstract:
    The distribution of cells through the phases of the cell cycle by DNA flow cytofluorimetry was analysed to investigate the effects of UV irradiation on cell cycle progression in asynchronous Chinese hamster cells with different UV-sensitivity: cell line V79 (UV-resistant cells), and UV-sensitive clones: B6, CHS1, CHS2 and XII. The UV-irradiated cultures show a large accumulation of cells in S phase, the effect increasing with UV dose increase, which may point to an inhibition of the DNA chain elongation. UV-sensitive clones show a larger and more prolongated increase in the proportion of cells in S phase after irradiation with smaller dose than UV-resistant cells. Besides, the UV-sensitive clone XII shows an inhibition of movement of irradiated cells from G1 into S phase, that may testify to an inhibition of replicon initiation. These results suggest that there is a correlation in UV-irradiated Chinese hamster cells between alteration in cell cycle progression and UV-sensitivity of cells.
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