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Related Experiment Videos

Early mouse development: lessons from gene targeting

B St-Jacques1, A P McMahon

  • 1Department of Molecular and Cellular Biology, Harvard University, The Biological Laboratories, 16 Divinity Avenue, Cambridge, Massachusetts, 02138 USA. bstjacques@hubio2.harvard.edu

Current Opinion in Genetics & Development
|August 1, 1996
PubMed
Summary

Recent mouse gene targeting studies reveal essential roles for genes like Lim 1 and Otx-2 in early development. Mutant phenotypes are prompting re-evaluation of developmental models and exploring gene redundancy with Hox genes.

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Area of Science:

  • Developmental Biology
  • Genetics
  • Molecular Biology

Background:

  • Gene targeting in mice has generated numerous mutants crucial for studying developmental processes.
  • Specific gene knockouts, like Lim 1 and Otx-2, highlight critical roles in early embryonic patterning.
  • Mutant phenotypes of genes such as activins and goosecoid necessitate revising existing developmental models.

Purpose of the Study:

  • To review recent advancements in mouse genetics and their impact on understanding developmental biology.
  • To highlight the significance of gene knockouts in elucidating gene function during development.
  • To discuss the implications of new mutant models for developmental biology research.

Main Methods:

  • Generation of mouse mutants through gene targeting.

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  • Analysis of knockout phenotypes to determine gene function.
  • Creation of compound mutants to investigate functional redundancy, particularly for Hox genes.
  • Utilizing advanced techniques for conditional knockouts and chromosomal alterations.

    • Main Results:

    • Knockouts of Lim 1 and Otx-2 demonstrate essential roles in early developmental patterning.
    • Mutant phenotypes for activins and goosecoid challenge current vertebrate developmental models.
    • Compound mutants, especially for Hox genes, provide insights into functional redundancy.
    • Technical advances enable sophisticated genetic manipulations like conditional knockouts.

    Conclusions:

    • Mouse gene targeting is a powerful tool for dissecting complex developmental pathways.
    • Mutant studies are critical for refining and validating developmental biology models.
    • Investigating gene redundancy and employing advanced genetic techniques are key for future research.