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Antibody treatment of human tumor xenografts elicits active anti-tumor immunity in nude mice

Antibody treatment of human tumor xenografts elicits active anti-tumor immunity in nude mice,10.1016/j.imlet.2007.08.006,Immunology Letters,Meredith A

Antibody treatment of human tumor xenografts elicits active anti-tumor immunity in nude mice   (Citations: 2)
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Athymic nude mice bearing subcutaneous tumor xenografts of the human anti-colorectal cancer cell line SW480 were used as a preclinical model to explore anti-tumor immunotherapies. Intratumor or systemic treatment of the mice with murine anti-SW480 serum, recombinant anti-SW480 polyclonal antibodies, or the anti-colorectal cancer monoclonal antibody CO17-1A, caused retardation or regression of SW480 tumor xenografts. Interestingly, when mice that had regressed their tumors were re-challenged with SW480 cells, these mice regressed the new tumors without further antibody treatment. Adoptive transfer of spleen cells from mice that had regressed their tumors conferred anti-tumor immunity to naïve nude mice. Pilot experiments suggest that the transferred anti-tumor immunity is mediated by T cells of both γδ and αβ lineages. These results demonstrate that passive anti-tumor immunotherapy can elicit active immunity and support a role for extra-thymic γδ and αβ T cells in tumor rejection. Implications for potential immunotherapies include injection of tumor nodules in cancer patients with anti-tumor antibodies to induce anti-tumor T cell immunity.
Journal: Immunology Letters - IMMUNOL LETT , vol. 114, no. 1, pp. 16-22, 2007
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