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Research Article Free access | 10.1172/JCI119107

Long-lived and transferable tumor immunity in mice after targeted interleukin-2 therapy.

J C Becker, N Varki, S D Gillies, K Furukawa, and R A Reisfeld

The Scripps Research Institute, Department of Immunology, La Jolla, California 92037, USA.

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The Scripps Research Institute, Department of Immunology, La Jolla, California 92037, USA.

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The Scripps Research Institute, Department of Immunology, La Jolla, California 92037, USA.

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The Scripps Research Institute, Department of Immunology, La Jolla, California 92037, USA.

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The Scripps Research Institute, Department of Immunology, La Jolla, California 92037, USA.

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Published December 15, 1996 - More info

Published in Volume 98, Issue 12 on December 15, 1996
J Clin Invest. 1996;98(12):2801–2804. https://doi.org/10.1172/JCI119107.
© 1996 The American Society for Clinical Investigation
Published December 15, 1996 - Version history
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Abstract

A major goal of tumor immunotherapy is the induction of tumor-specific T cell responses that are effective in eradicating disseminated tumor, as well as mounting a persistent tumor-protective immunity. We demonstrate here that a genetically engineered fusion protein consisting of human/mouse chimeric anti-ganglioside GD2 antibody and human interleukin-2 is able to induce eradication of established B78-D14 melanoma metastases in immunocompetent syngeneic C57BL/6J mice. This therapeutic effect is mediated by host immune cells, particularly CD8+ T cells and is associated with the induction of a long-lived immunity preventing tumor growth in the majority of animals when challenged up to four months later with B78-D14 cells. This effect was tumor-specific, since no cross-protection against syngeneic, ganglioside GD2+ EL-4 thymoma cells was observed. Furthermore, this tumor-specific protection can be transmitted horizontally to naive, syngeneic SCID mice by passive transfer of CD8+ T lymphocytes derived from immune animals. These results suggest that antibody-targeted delivery of cytokines provides a means to elicit effective immune responses against established tumors in the immunotherapy of neoplastic disease.

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