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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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McBurney, M.W. et al.

Intragenic regions of the murine Pgk-1 locus enhance integration of transfected DNAs into genomes of embryonal carcinoma cells.

Introduction of recombinant genes into mammalian cells in culture has been an important procedure in establishing the molecular mechanisms of various cellular processes. The efficiency with which plasmid borne recombinant genes are expressed following stable integration into genomes of embryonal carcinoma cells is low. Using the P19 embryonal carcinoma cells as recipients, we found that constructs carrying the promoter and intragenic regions of the murine Pgk-1 gene were expressed with high efficiency. This elevated expression was associated with increased numbers of copies of the transfected plasmid DNA stably associated with the genomes of recipient cells. The elevated plasmid copy numbers may result from enhanced ligation of transfected plasmids because cotransfected plasmids were also integrated in increased numbers. The enhanced integration and expression of transfected plasmids required active transcription through an intragenic region of Pgk-1, perhaps resulting in more recombinogenic plasmid DNAs.[1]

References

Intragenic regions of the murine Pgk-1 locus enhance integration of transfected DNAs into genomes of embryonal carcinoma cells. McBurney, M.W., Fournier, S., Jardine, K., Sutherland, L. Somat. Cell Mol. Genet. (1994) [Pubmed]

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