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Immunology |
Cancer Research Laboratory [A. A. H., T. T., E. M. C., J. P. A.] and Howard Hughes Medical Institute [T. T., E. M. C., J. P. A.], University of California, Berkeley, California 94720; Department of Cell Biology, Baylor College of Medicine, Houston, Texas 77027 [B. A. F., N. M. G.]; Department of Urology and Cardinal Bernardin Cancer Center, Loyola University School of Medicine, Maywood, Illinois 60153 [E. D. K.]; and Laboratory of Kidney and Electrolyte Metabolism, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892 [E. D. K., M. B. B.]
We have previously shown that antibodies to CTLA-4, an inhibitory receptor on T cells, can be effective at inducing regression of transplantable murine tumors. In this study, we demonstrate that an effective immune response against primary prostate tumors in transgenic (TRAMP) mice can be elicited using a strategy that combines CTLA-4 blockade and an irradiated tumor cell vaccine. Treatment of TRAMP mice at 14 weeks of age resulted in a significant reduction in tumor incidence (15% versus control, 75%), as assessed 2 months after treatment. Histopathological analysis revealed that treated mice had a lower tumor grade with significant accumulation of inflammatory cells in interductal spaces when treated with anti-CTLA-4 and a granulocyte-macrophage colony-stimulating factor-expressing vaccine. Vaccination of nontransgenic mice with this regimen resulted in marked prostatitis accompanied by destruction of epithelium, indicating that the immune response was, at least in part, directed against normal prostate antigens. These findings demonstrate that this combinatorial treatment can elicit a potent antiprostate response and suggest potential of this approach for treatment of prostate cancer.
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S. L. Peng, M. J. Townsend, J. L. Hecht, I. A. White, and L. H. Glimcher T-bet Regulates Metastasis Rate in a Murine Model of Primary Prostate Cancer Cancer Res., January 15, 2004; 64(2): 452 - 455. [Abstract] [Full Text] [PDF] |
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J. W. Hodge, D. W. Grosenbach, W. M. Aarts, D. J. Poole, and J. Schlom Vaccine Therapy of Established Tumors in the Absence of Autoimmunity Clin. Cancer Res., May 1, 2003; 9(5): 1837 - 1849. [Abstract] [Full Text] [PDF] |
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D. Daniel, N. Meyer-Morse, E. K. Bergsland, K. Dehne, L. M. Coussens, and D. Hanahan Immune Enhancement of Skin Carcinogenesis by CD4+ T Cells J. Exp. Med., April 21, 2003; 197(8): 1017 - 1028. [Abstract] [Full Text] [PDF] |
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F. S. Hodi, M. C. Mihm, R. J. Soiffer, F. G. Haluska, M. Butler, M. V. Seiden, T. Davis, R. Henry-Spires, S. MacRae, A. Willman, et al. Biologic activity of cytotoxic T lymphocyte-associated antigen 4 antibody blockade in previously vaccinated metastatic melanoma and ovarian carcinoma patients PNAS, April 15, 2003; 100(8): 4712 - 4717. [Abstract] [Full Text] [PDF] |
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J. Espenschied, J. Lamont, J. Longmate, S. Pendas, Z. Wang, D. J. Diamond, and J. D. I. Ellenhorn CTLA-4 Blockade Enhances the Therapeutic Effect of an Attenuated Poxvirus Vaccine Targeting p53 in an Established Murine Tumor Model J. Immunol., March 15, 2003; 170(6): 3401 - 3407. [Abstract] [Full Text] [PDF] |
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G. Parmiani, C. Castelli, P. Dalerba, R. Mortarini, L. Rivoltini, F. M. Marincola, and A. Anichini Cancer Immunotherapy With Peptide-Based Vaccines: What Have We Achieved? Where Are We Going? J Natl Cancer Inst, June 5, 2002; 94(11): 805 - 818. [Abstract] [Full Text] [PDF] |
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M. Mercader, B. K. Bodner, M. T. Moser, P. S. Kwon, E. S. Y. Park, R. G. Manecke, T. M. Ellis, E. M. Wojcik, D. Yang, R. C. Flanigan, et al. T cell infiltration of the prostate induced by androgen withdrawal in patients with prostate cancer PNAS, December 4, 2001; 98(25): 14565 - 14570. [Abstract] [Full Text] [PDF] |
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A. van Elsas, R. P.M. Sutmuller, A. A. Hurwitz, J. Ziskin, J. Villasenor, J.-P. Medema, W. W. Overwijk, N. P. Restifo, C. J.M. Melief, R. Offringa, et al. Elucidating the Autoimmune and Antitumor Effector Mechanisms of a Treatment Based on Cytotoxic T Lymphocyte Antigen-4 Blockade in Combination with a B16 Melanoma Vaccine: Comparison of Prophylaxis and Therapy J. Exp. Med., August 20, 2001; 194(4): 481 - 490. [Abstract] [Full Text] [PDF] |
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