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Direct dystrophin and reporter gene transfer into dog muscle in vivo

Howell, J.M., Fletcher, S., O'Hara, A., Johnsen, R.D., Lloyd, F. and Kakulas, B.A. (1998) Direct dystrophin and reporter gene transfer into dog muscle in vivo. Muscle & Nerve, 21 (2). pp. 159-165.

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Bacterial β-galactosidase cDNA was injected without lipofectin into 41 sites in dog muscle and expression was seen in 22 of them. The cDNA and lipofectin was injected into 35 similar sites and expression was seen in 21. Expression was seen in a maximum of 2.5% of muscle fibers and 23.21% of nonmuscle cells. A total of 106 muscle sites were injected with the minigene with and without lipofectin. In 4 of the 45 sites injected with the minigene without lipofectin human dystrophin was expressed around the periphery of 0.3% of the fibers. Bacterial β-galactosidase cDNA was injected into the peritoneal cavity of 4 pups, 2 of which also received lipofectin. In all 4, expression was seen in liver, spleen, and mesenteric lymph node. In the 2 pups that received lipofectin, expression was also seen in the diaphragm, intercostal, and abdominal muscles of 1 and in the diagphragm and intercostal muscles of the other. These experiments show that human dystrophin transgene expression can be obtained in dog muscle. However, other methods will be required to increase the degree of expression before gene therapy trials can be undertaken.

Item Type: Journal Article
Murdoch Affiliation(s): School of Veterinary and Biomedical Sciences
Publisher: John Wiley and Sons Inc.
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