PMID: 8940636Nov 1, 1996Paper

In vivo muscle gene transfer of full-length dystrophin with an adenoviral vector that lacks all viral genes

Gene Therapy
Paula R ClemensC T Caskey

Abstract

Duchenne muscular dystrophy (DMD) is an important target for gene transfer because of the disease's high frequency and devastating course. To date, adenoviral vector-mediated gene transfer for DMD has been unavailable because (1) adenoviral vectors were unable to accommodate the full-length dystrophin cDNA (14 kb); and (2) adenoviral vectors induced inflammatory reactions in the gene transfer recipient. We addressed both problems with a novel adenoviral vector that contains no viral genes and encodes 28.2 kb of foreign DNA including both the full-length dystrophin cDNA with the muscle creatine kinase promoter for transcriptional control and a lacZ marker gene. This report presents the in vivo expression of dystrophin and beta-galactosidase from this vector in skeletal muscle of the mdx mouse, a mutant mouse that lacks dystrophin. Somatic delivery of the vector by intramuscular injection in 6-day-old mice resulted in the expression of full-length, recombinant dystrophin at the muscle membrane. Dystrophin-associated proteins were restored in muscle fibers expressing recombinant dystrophin. Mdx muscle injected with our vector showed a decrease in the proportion of fibers with nuclei located centrally; centrally placed nuclei in mu...Continue Reading

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