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Efficient method to generate single-copy transgenic mice by site-specific integration in embryonic stem cells
Caroline Beard1, Konrad Hochedlinger, Kathrin Plath
1Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02142, USA.
Genesis (New York, N.Y. : 2000)
|January 10, 2006
Summary
This study introduces a novel transgene integration strategy using site-specific recombination for precise gene targeting in mice. This method enables predictable gene expression for studying development and disease pathogenesis.
Area of Science:
- Genetics and Genomics
- Developmental Biology
- Molecular Biology
Background:
- Transgenic and gene-targeted mutant mice are crucial for studying cellular processes in development and disease.
- Current methods can lack precision in controlling gene expression temporally and spatially.
Purpose of the Study:
- To develop a reliable strategy for site-specific transgene integration in embryonic stem (ES) cells.
- To enable predictable temporal and spatial gene expression in ES cells and resulting mice.
Main Methods:
- Utilized homologous recombination to insert an FRT ( ফ্লিপase recombination target) site into the genome.
- Employed FLPe recombinase for efficient integration of tetracycline-inducible transgenes into the FRT site.
- Established multiple ES cell lines with targeted transgene integration.
Main Results:
- Successfully generated ES cell lines with site-specifically integrated tetracycline-inducible transgenes.
- Demonstrated efficient transgene integration mediated by FLPe recombinase.
- The strategy allows for predictable gene expression patterns.
Conclusions:
- The described site-specific recombination strategy provides a powerful tool for generating precisely targeted transgenic mice.
- This approach facilitates the study of gene function in early development and disease.
- The method is broadly applicable to various loci in ES cells for rapid transgenic mouse production.