Journal
MOLECULAR THERAPY
Volume 9, Issue 3, Pages 328-336Publisher
CELL PRESS
DOI: 10.1016/j.ymthe.2003.12.007
Keywords
antibody therapy; electroporation; nonviral DNA delivery
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Antibodies are useful for the treatment of a variety of diseases. We here demonstrate that mouse muscle produced monoclonal antibodies (mAb) after a single injection of immunoglobulin genes as plasmid DNA. In vivo electroporation of muscle greatly enhanced antibody production. For chimeric antibodies, levels of 50-200 ng mAb/ml serum were obtained but levels declined after 7-14 days due to an immune response against the xenogeneic parts of the antibody. By contrast, fully mouse antibodies persisted in serum for at least 7 months. mAb produced by the muscle had correct structure, specificity, and biological effector functions. The findings were extended to a larger animal, the sheep, in which mAb serum levels of 30-50 ng/ml were obtained. Sustained levels of serum mAb, induced by single injection of Ig genes and electroporation of muscle cells, may offer significant advantages in the treatment of human diseases.
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