A gene therapy for cancer using intramuscular injection of plasmid DNA encoding interferon α
- 16 February 1999
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 96 (4) , 1553-1558
- https://doi.org/10.1073/pnas.96.4.1553
Abstract
A cancer treatment is described in which i.m. injection of plasmid DNA (pDNA) encoding murine interferon alpha (mIFN-alpha) leads to potent antitumor effects on primary and metastatic tumors in mice. Mice bearing s.c. B16F10 melanoma, Cloudman melanoma, or glioma 261 tumors were injected i.m. with mIFN-alpha pDNA. In all three tumor models, a significant reduction in tumor volume and enhancement of survival was found after IFN pDNA therapy. The mIFN-alpha pDNA could be injected as infrequently as once every other week and still produce a significant antitumor effect, and, in a metastatic tumor model, the therapy markedly reduced the number of lung tumor metastases. Depletion of immune cell subsets indicated that CD8(+) T cells were required for the antitumor response. These studies demonstrate that primary and metastatic tumors can be treated systemically by i.m. injection of a plasmid encoding a cytokine gene.Keywords
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