Abstract
The Ty1 assay is a short-term test for detection of genotoxins based on induction of the transposition of a gene-engineered Ty1 retrotransposon in Saccharomyces cerevisiae cells. Here, we provide evidence that the Ty1 test responds positively in concentration-dependent manner to the carcinogenic genotoxins benz(a)anthracene, benzo(a)pyrene, chenodeoxycholic and taurodeoxycholic free bile acids and to environmental soil samples polluted with carcinogenic substances. The Ty1 test gives negative results with the noncarcinogenic mutagens benz(b)anthracene, benzo(e)pyrene, lithocholic and taurodeoxycholic conjugated bile acids and to soil samples not polluted with carcinogens. Presence or absence of genotoxins in soil samples was evidenced by chemical analysis. Several explanations for the sensitive differential test’s response to genotoxins are proposed and discussed. It is concluded that the Ty1 test can complement existing assays in laboratory and environmental studies showing high sensitivity to a wider spectrum of carcinogenic genotoxins.
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This research was supported partially by grant NATO SfP 977977 given to P.V.
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Pesheva, M., Krastanova, O., Stamenova, R. et al. The response of Ty1 test to genotoxins. Arch Toxicol 82, 779–785 (2008). https://doi.org/10.1007/s00204-008-0299-5
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DOI: https://doi.org/10.1007/s00204-008-0299-5