Orally Administered IFN-α Acts Alone and in Synergistic Combination with Intraperitoneally Administered IFN-γ to Exert an Antitumor Effect Against B16 Melanoma in Mice
1998
ABSTRACT Administration of interferons (IFN) via the intranasal route recently has been shown to exert an antitumor activity against a variety of tumors in mice, including B16 melanoma inoculated intravenously. This study confirms the antitumor activity of orally administered IFN-γ against B16 melanoma challenge using another route of tumor inoculation, the intraperitoneal route. It further demonstrates that orally administered IFN-α can synergistically interact with intraperitoneally administered IFN-γ but not with intraperitoneally administered IFN-α. The results support the interpretation that the oral route may provide an effective alternative or supplement to current methods of IFN administration for the control of malignancies.
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