Abstract
We have developed a method of specifically modifying the mammalian genome in vivo. This procedure comprises heritable tissue-specific and site-specific DNA recombination as a function of recombinase expression in transgenic mice. Transgenes encoding the bacteriophage P1 Cre recombinase and the loxP-flanked beta-galactosidase gene were used to generate transgenic mice. Genomic DNA from doubly transgenic mice exhibited tissue-specific DNA recombination as a result of Cre expression. Further characterization revealed that this process was highly efficient at distinct chromosomal integration sites. These studies also imply that Cre-mediated recombination provides a heritable marker for mitoses following the loss of Cre expression. This transgene-recombination system permits unique approaches to in vivo studies of gene function within experimentally defined spatial and temporal boundaries.
MeSH Terms
Animals
Blotting, Southern
CD4 Antigens/genetics
CD8 Antigens/genetics
Coliphages/enzymology,genetics
DNA/genetics,isolation & purification
DNA Nucleotidyltransferases/genetics,metabolism
DNA Probes
Growth Hormone/genetics
Humans
Integrases
Mice
Mice, Transgenic/genetics
Organ Specificity
Recombination, Genetic
Restriction Mapping
T-Lymphocytes/immunology,physiology
Transcription, Genetic
Viral Proteins
beta-Galactosidase/genetics,metabolism
Chemicals
CD4 Antigens
CD8 Antigens
DNA Probes
Viral Proteins
Growth Hormone
DNA
Cre recombinase
DNA Nucleotidyltransferases
Integrases
beta-Galactosidase
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Orban P C
Biomedical Research Centre, University of British Columbia, Vancouver, Canada.
Chui D
Marth J D
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