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Related Experiment Videos

A gene trap approach in Xenopus.

O J Bronchain1, K O Hartley, E Amaya

  • 1Wellcome/CRC Institute, Department of Zoology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR, UK.

Current Biology : CB
|October 26, 1999
PubMed
Summary

This study demonstrates that combining frog transgenesis with a gene trap system effectively enables insertional mutagenesis in Xenopus embryos. This powerful approach allows for the trapping and cloning of spatially regulated endogenous genes.

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Area of Science:

  • Developmental Biology
  • Genetics
  • Molecular Biology

Background:

  • Transgenesis offers a method for random DNA insertion into genomes.
  • Gene trapping is a technique used to identify and study gene function.

Purpose of the Study:

  • To evaluate the efficacy of a gene trap approach combined with transgenesis for insertional mutagenesis in Xenopus embryos.
  • To confirm stable genomic integration and germline transmission of transgenes in Xenopus.
  • To develop and utilize gene trap vectors for identifying spatially regulated genes.

Main Methods:

  • Generation of transgenic Xenopus embryos using gene trap vectors containing the green fluorescent protein (GFP) marker.
  • Confirmation of stable transgene integration and Mendelian transmission through the germline.

Related Experiment Videos

  • Cloning of trapped genes using 5' rapid amplification of cDNA ends polymerase chain reaction (RACE PCR).

    • Main Results:

    • Transgenic Xenopus confirmed stable integration and Mendelian germline transmission.
    • Gene trap vectors successfully identified spatially restricted gene expression patterns in various tissues (epiphysis, olfactory bulb, eyes, ear, brain, muscles, tail, intestine).
    • One trapped gene was successfully cloned using RACE PCR.

    Conclusions:

    • The combination of transgenesis and gene trapping is a powerful method for insertional mutagenesis in Xenopus.
    • This approach facilitates the study of endogenous gene function and spatial expression patterns in developing embryos.
    • The developed gene trap system provides a valuable tool for genetic research in Xenopus.