Somatic Cell and Molecular Genetics

, Volume 25, Issue 1, pp 27–31 | Cite as

Influence of DNA Delivery Method on Gene Targeting Frequencies in Human Cells

  • Rafael J. Yáñez
  • Andrew C.G. PorterEmail author


Gene targeting can be used for genetic studies of human cell lines and has significant potential for somatic cell gene therapy. These applications are however restricted by the low frequency of homologous recombination in higher eukaryotes compared to the relatively efficient nonhomologous integration of transfected DNA into the genome. As part of our attempts to overcome this problem, we compared two widely used transfection methods for their efficiency in gene targeting. To our surprise we found that, for conditions that render similar frequencies of nonhomologous integrants, lipofection is much less efficient than electroporation in generating targeted clones. This suggests that nonhomologous and homologous recombination have different requirements for DNA delivery in human cells.


Gene Target Gene Therapy Somatic Cell Human Cell Genetic Study 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Plenum Publishing Corporation 1999

Authors and Affiliations

  1. 1.Gene Targeting Group, MRC Clinical Sciences CentreImperial College School of Medicine, Hammersmith HospitalLondonUnited Kingdom

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