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Vaccine immunotherapy for prostate cancer: from mice to men

  • IMMUNOLOGY AT THE UNIVERSITY OF IOWA
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Abstract

Preclinical studies demonstrated the ability of an adenovirus/PSA (Ad/PSA) vaccine to induce strong anti-PSA immune responses, and these responses were capable of destroying prostate-specific antigen (PSA)-secreting mouse prostate tumors. A series of preclinical studies have demonstrated the superiority of the Ad/PSA vaccine to other PSA vaccines for the induction of anti-PSA immune responses, the ability of Ad/PSA vaccination combined with cytokine gene therapy and the TLR9 agonist CpG to enhance the anti-prostate tumor immunotherapy, and the reduction of negative regulatory elements when the vaccine was combined with 5-fluoruracil administration. A phase I clinical trial of the Ad/PSA vaccine in men with metastatic castrate-resistant prostate cancer demonstrated the safety of the vaccine even at the highest single dose permitted by the FDA. Currently, a phase II trial of the Ad/PSA vaccine is underway treating patients in two protocols. Thus far 81 patients have been enrolled and vaccinated. Early results from the patients evaluated to date demonstrated the induction of anti-PSA T cell responses, and the majority of patients evaluated at this time had demonstrated an increase in PSA doubling times.

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Correspondence to David M. Lubaroff.

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Richard D. Williams is deceased.

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Lubaroff, D.M., Vaena, D., Brown, J.A. et al. Vaccine immunotherapy for prostate cancer: from mice to men. Immunol Res 59, 229–235 (2014). https://doi.org/10.1007/s12026-014-8531-2

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  • DOI: https://doi.org/10.1007/s12026-014-8531-2

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