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Proc Natl Acad Sci U S A. 2006 Oct 10;103(41):15008-13. Epub 2006 Sep 27.

piggyBac is a flexible and highly active transposon as compared to sleeping beauty, Tol2, and Mos1 in mammalian cells.

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  • 1Cancer Research Center, Medical College of Georgia, Augusta, GA 30912, USA.

Abstract

A nonviral vector for highly efficient site-specific integration would be desirable for many applications in transgenesis, including gene therapy. In this study we directly compared the genomic integration efficiencies of piggyBac, hyperactive Sleeping Beauty (SB11), Tol2, and Mos1 in four mammalian cell lines. piggyBac demonstrated significantly higher transposition activity in all cell lines whereas Mos1 had no activity. Furthermore, piggyBac transposase coupled to the GAL4 DNA-binding domain retains transposition activity whereas similarly manipulated gene products of Tol2 and SB11 were inactive. The high transposition activity of piggyBac and the flexibility for molecular modification of its transposase suggest the possibility of using it routinely for mammalian transgenesis.

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PMID:
17005721
[PubMed - indexed for MEDLINE]
PMCID:
PMC1622771
Free PMC Article

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