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BLUE BELL, Pa., Feb. 2, 2011 /PRNewswire/ -- Inovio Pharmaceuticals, Inc. (NYSE Amex: INO), a leader in the development of therapeutic and preventive vaccines against cancers and infectious diseases, announced today the publication of a scientific paper in the journal Human Vaccines detailing potent immune responses in a preclinical study of Inovio's SynCon™ DNA vaccine for prostate cancer targeting two antigens. While current prostate cancer therapies target single antigens, in this study Inovio tested the hypothesis in mice that a broader collection of antigens, administered with Inovio's electroporation-based delivery technology, would improve the breadth and effectiveness of a prostate cancer immunotherapy.

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The development of a new treatment for prostate cancer would be a significant medical advance given that present treatment options (surgery, radiation and hormone deprivation), while somewhat effective, all carry deleterious side effects and often do not confer long-term cure. Across the United States, there were 218,000 new cases of prostate cancer and more than 32,000 deaths in 2010.

This study, conducted by Inovio scientists and their collaborators, is described in the published paper entitled, "Co-delivery of PSA and PSMA DNA vaccines with electroporation induces potent immune responses." The SynCon™ DNA vaccine evaluated in this study was generated by the creation of PSA and PSMA synthetic consensus immunogens based on human and macaque sequences, which enabled the amino acid sequences of the antigens to differ slightly from the native protein. In humans, this difference may aid in the evasion of self-tolerance while still mounting an anti-tumor immune response.  Mice received two immunizati

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