Roilides E, Munson P J, Levine A S, Dixon K
Section on Viruses and Cellular Biology, National Institute of Child Health and Human Development, Bethesda, Maryland 20892.
Mol Cell Biol. 1988 Sep;8(9):3943-6. doi: 10.1128/mcb.8.9.3943-3946.1988.
When monkey cells were treated with mitomycin C 24 h before transfection with UV-irradiated pZ189 (a simian virus 40-based shuttle vector), there was a twofold increase in the frequency of mutations in the supF gene of the vector. These results suggest the existence of an enhancible mutagenesis pathway in mammalian cells. However, DNA sequence analysis of the SupF- mutants suggested no dramatic changes in the mechanisms of mutagenesis due to mitomycin C treatment of the cells.
在用紫外线照射的pZ189(一种基于猿猴病毒40的穿梭载体)转染前24小时用丝裂霉素C处理猴细胞时,载体的supF基因中的突变频率增加了两倍。这些结果表明哺乳动物细胞中存在一种可增强的诱变途径。然而,对SupF突变体的DNA序列分析表明,由于用丝裂霉素C处理细胞,诱变机制没有显著变化。