Journal
MOLECULAR THERAPY
Volume 13, Issue 2, Pages 438-446Publisher
CELL PRESS
DOI: 10.1016/j.ymthe.2005.08.003
Keywords
gene targeting; gene therapy; homologous recombination; zinc finger nucleases
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Gene targeting by homologous recombination is a powerful method to manipulate the genome precisely and could be exploited to correct genetic defects. Zinc finger nucleases are designed proteins that fuse a zinc finger DNA binding domain to the nuclease domain from the Fokl restriction endonuclease. Zinc finger nucleases were generated that stimulated gene targeting from half-site sequences from the human beta-globin gene and the human common gamma-chain gene. Zinc finger nucleases were also generated that stimulated gene targeting at full sites from the green fluorescent protein gene and the human CD8 alpha gene. This work built on the prior zinc finger design work of others and in targeting these four genes had a 100% success rate at designing nucleases to the consensus half-site 5'-GNNGNNGNN-3' and the consensus full site 5'-NNCNNCNNCNNNN-NNGNNGNNGNN-3', suggesting that zinc finger nucleases can be empirically designed to stimulate gene targeting in a large portion of the mammalian genome.
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