PMID: 9544192Apr 17, 1998Paper

Comparison of the types of mutations induced by 7,12-dimethylbenz[a]anthracene in the lacI and hprt genes of Big Blue rats

Environmental and Molecular Mutagenesis
R A MittelstaedtR H Heflich

Abstract

An important question regarding the use of transgenic reporter genes to detect mutation in rodents is how the types of mutations recovered in transgenes compare with the types of mutations found in endogenous genes. In this study, we examined mutations induced by 7,12-dimethylbenz[a]anthracene in the lacI transgene and the endogenous hprt gene of lymphocytes from Big Blue rats and in the hprt gene of lymphocytes from nontransgenic Fischer 344 rats. The overall mutation profiles found in these genes were remarkably similar: the majority of mutations were base pair substitutions, with the most common mutation being A:T-->T:A transversion. Differences were found for the mutational profiles in the endogenous gene and transgene with respect to the location of the mutations and the orientation of basepair substitutions in the DNA strands. In most cases, these differences could be explained by the nature of the target genes. The results support the use of the lacI transgene for detecting in vivo mutation.

References

Aug 24, 1978·Nature·P J Farabaugh
Jun 1, 1994·Mutation Research·M J DycaicoJ M Short
Nov 1, 1994·Mutation Research·R A Mittelstaedt, R H Heflich
Jan 1, 1995·Annual Review of Pharmacology and Toxicology·J C MirsalisR A Winegar
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Jan 1, 1995·Environmental and Molecular Mutagenesis·R A MittelstaedtR H Heflich
Jan 1, 1996·Environmental and Molecular Mutagenesis·R DaviesJ A Styles

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Citations

Dec 13, 2000·Mutation Research·J T MacGregorL Müller
Aug 12, 2005·Experimental and Toxicologic Pathology : Official Journal of the Gesellschaft Für Toxikologische Pathologie·James M ParryEileen M Waters
Oct 17, 1998·Environmental and Molecular Mutagenesis·J T MacGregor
Jan 18, 2018·International Journal of Molecular Sciences·Ahmad BesaratiniaStella Tommasi
Sep 12, 2009·Critical Reviews in Toxicology·Annie M JarabekErrol Zeiger
Mar 14, 2021·Environmental Pollution·Francisco Carlos da Silva JuniorSilvia Regina Batistuzzo de Medeiros
Aug 6, 2005·Mutation Research·Iain B LambertGeorge R Douglas

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