Wolfgang Dummer, Andreas G Niethammer, Roberto Baccala, Brian R Lawson, Norbert Wagner, Ralph A Reisfeld, Argyrios N Theofilopoulos
Department of Immunology, The Scripps Research Institute, La Jolla, California 92037, USA.
The Journal of clinical investigation 2002 JulDevelopment of tumor immunotherapies focuses on inducing autoimmune responses against tumor-associated self-antigens primarily encoded by normal, unmutated genes. We hypothesized that such responses could be elicited by T cell homeostatic proliferation in the periphery, involving expansion of T cells recognizing self-MHC/peptide ligands. Herein, we demonstrate that sublethally irradiated lymphopenic mice transfused with autologous or syngeneic T cells showed tumor growth inhibition when challenged with melanoma or colon carcinoma cells. Importantly, the antitumor response depended on homeostatic expansion of a polyclonal T cell population within lymph nodes. This response was effective even for established tumors, was characterized by CD8(+) T cell-mediated tumor-specific cytotoxicity and IFN-gamma production, and was associated with long-term memory. The results indicate that concomitant induction of the physiologic processes of homeostatic T cell proliferation and tumor antigen presentation in lymph nodes triggers a beneficial antitumor autoimmune response.
Wolfgang Dummer, Andreas G Niethammer, Roberto Baccala, Brian R Lawson, Norbert Wagner, Ralph A Reisfeld, Argyrios N Theofilopoulos. T cell homeostatic proliferation elicits effective antitumor autoimmunity. The Journal of clinical investigation. 2002 Jul;110(2):185-92
PMID: 12122110
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