Fishy mutations

Transgenic animals carrying a prokaryotic vector are useful tools for mutation studies and the detection of spontaneous or induced mutations in different tissues. Advances in fish transgenesis make it possible to develop fish that can be used both to assess the health hazards of mutagens in aquatic environments and for comparative mutagenesis analysis. In a paper published online ahead of print in Proceedings of the National Academy of Sciences, Winn et al. report the use of a bacteriophage lamb

By | November 2, 2000

Transgenic animals carrying a prokaryotic vector are useful tools for mutation studies and the detection of spontaneous or induced mutations in different tissues. Advances in fish transgenesis make it possible to develop fish that can be used both to assess the health hazards of mutagens in aquatic environments and for comparative mutagenesis analysis. In a paper published online ahead of print in Proceedings of the National Academy of Sciences, Winn et al. report the use of a bacteriophage lambdacII transgene to detect mutations rates (Read the abstract online). The bacteriophage can be easily rescued from the fish genomic DNA and mutated phage are selected by plaque formation on a bacterial lawn. Winn et al. show that spontaneous mutation rates are tissue-specific (higher in liver than in testes) and are roughly comparable with those observed in transgenic mice. Also, mutations induced by exposure to ethylnitrosourea (ENU) are concentration- and time-dependent. This study shows that fish provide a simple lambda-based transgenic model for mutation analysis.

Popular Now

  1. How Plants Evolved Different Ways to Make Caffeine
  2. Thomson Reuters Predicts Nobelists
    The Nutshell Thomson Reuters Predicts Nobelists

    According to citation statistics, researchers behind programmed cell death pathways and CRISPR/Cas9 are among those in line for Nobel Prizes this year.

  3. Sequencing Reveals Genomic Diversity of the Human Brain
  4. Reviewing Results-Free Manuscripts
    The Nutshell Reviewing Results-Free Manuscripts

    An open-access journal is trialing a peer-review process in which reviewers do not have access to the results or discussion sections of submitted papers.

RayBiotech