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Related Experiment Videos

Transgenic systems for in vivo mutation analysis

G S Provost1, P L Kretz, R T Hamner

  • 1Stratagene, La Jolla, CA 92037.

Mutation Research
|July 1, 1993
PubMed
Summary
This summary is machine-generated.

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Transgenic mice and rats with lacI shuttle vectors enable in vivo mutation detection across tissues. This system aids in understanding compound mutagenicity and molecular mutagenesis mechanisms.

Area of Science:

  • Toxicology
  • Genetics
  • Molecular Biology

Background:

  • Transgenic models are crucial for in vivo mutagenicity testing.
  • The lacI gene serves as a sensitive target for mutation detection.
  • Understanding tissue-specific and time-dependent mutagenic effects is vital.

Purpose of the Study:

  • To detail the utility of transgenic mice with lacI shuttle vectors for in vivo mutation measurement.
  • To analyze the mutagenic effects of compounds and characterize mutation spectra.
  • To introduce transgenic rats for inter-species comparison of mutagenesis testing.

Main Methods:

  • Utilizing transgenic mice harboring lambda/lacI shuttle vectors for in vivo mutation assays.
  • Employing sequencing analysis to determine mutation spectra and assess mutagenic responses.

Related Experiment Videos

  • Developing modifications for direct selection of lacI mutations.
  • Generating transgenic rats with the same vector for comparative studies.

    • Main Results:

    • Demonstrated tissue-specific and time-dependent mutagenic responses in mice.
    • Mutation spectra from sequencing paralleled results from alternative in vivo assays.
    • Successful modifications allowed for direct selection of lacI mutations.
    • Established transgenic rats for inter-species mutagenesis comparisons.

    Conclusions:

    • The lacI shuttle vector system in transgenic mice is effective for in vivo mutagenicity assessment.
    • Sequencing analysis provides insights into mutagenesis mechanisms and the role of expression time.
    • Transgenic rats offer a valuable tool for inter-species comparisons in mutagenesis research.
    • This approach enhances understanding of molecular mutagenesis in vivo.