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Science. 1991 Dec 6;254(5037):1507-9.

Systemic delivery of recombinant proteins by genetically modified myoblasts.

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  • 1Howard Hughes Medical Institute, University of Michigan Medical Center, Ann Arbor 48109.

Abstract

The ability to stably deliver recombinant proteins to the systemic circulation would facilitate the treatment of a variety of acquired and inherited diseases. To explore the feasibility of the use of genetically engineered myoblasts as a recombinant protein delivery system, stable transfectants of the murine C2C12 myoblast cell line were produced that synthesize and secrete high levels of human growth hormone (hGH) in vitro. Mice injected with hGH-transfected myoblasts had significant levels of hGH in both muscle and serum that were stable for at least 3 weeks after injection. Histological examination of muscles injected with beta-galactosidase-expressing C2C12 myoblasts demonstrated that many of the injected cells had fused to form multinucleated myotubes. Thus, genetically engineered myoblasts can be used for the stable delivery of recombinant proteins into the circulation.

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PMID:
1962212
[PubMed - indexed for MEDLINE]

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