Analysis of mutagenesis in UV-sensitive mouse lymphoma L5178Y-R cells with a polyomavirus-based shuttle vector.
A newly-developed polyomavirus-based shuttle vector, pPySLPT-2, was used to analyze mutations induced by UV radiation in the two related mouse lymphoma cell lines, L5178Y-R (LY-R) and L5178Y-S (LY-S). These well-studied cell lines differ in sensitivity to UV radiation, apparently due to differences in DNA repair capacity. Consistent with these differences, we found that replication of UV-irradiated vector is inhibited to a greater extent in the UV sensitive LY-R cells than in the LY-S cells. Mutations were induced in the vector's supF target gene at a higher frequency in the LY-R cells than in the LY-S cells, but the sequence characteristics of the base substitution mutations were similar in the two cell lines. The pattern of UV-induced mutations in the supF target gene of this polyomavirus-based vector, replicated in the mouse cells, was very similar to the pattern observed in the same target gene in the analogous simian virus 40-based vector, pZ189, replicated in monkey and human cells.
Zernik-Kobak
M
M
Department of Environmental Health, University of Cincinnati Medical Center, Kettering Laboratory, OH 45267-0056, USA.
Szumiel
I
I
Levine
A S
AS
Dixon
K
K
D000818:Animals; D001483:Base Sequence; D004249:DNA Damage; D004261:DNA Replication; D004274:DNA, Recombinant / Q000528:radiation effects; D005822:Genetic Vectors; D008223:Lymphoma; D051379:Mice; D008969:Molecular Sequence Data; D016296:Mutagenesis; D011120:Polyomavirus / Q000235:genetics*; D014407:Tumor Cells, Cultured; D014466:Ultraviolet Rays
D004274:DNA, Recombinant