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Oncology. 1997 Jan-Feb;54(1):69-73.

Antitumor effect of murine colon carcinoma cells retrovirally transduced with interleukin-4 and granulocyte macrophage-colony stimulating factor genes.

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Department of Surgery (II), Chiba University School of Medicine, Japan.


We have investigated the antitumor effect of murine colon carcinoma cells developed to produce cytokines. Retrovirally transduced cells were inoculated into syngeneic mice, and their survivals were examined. Inoculation of interleukin-4 (IL-4)- or granulocyte macrophage-colony stimulating factor (GM-CSF)-producing cells alone did not affect the survival of the mice. In the tumors derived from an admixture of IL-4 and GM-CSF producers, however, regression developed spontaneously, and prolonged survival of the challenged mice was consequently observed. Histological examination revealed predominant infiltration of neutrophils around the tumor of a mixed population of IL-4 and GM-CSF producers.

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