Recently, several novel members of the IL-1 family have been identified. The possible therapeutic utility and the underlying biologic role of these new members remain unclear. In the present study we analyzed the anti-tumor activity of human IL-1 homologue 4(IL-1H4; renamed IL-F7) by adenovirus-mediated gene transfer (AdIL-1H4) directly into murine tumors. In vitro expression analysis showed that IL-1H4 was a secretory protein. Treatment of an established MCA205 mouse fibrosarcoma by single intratumoral injection of AdIL-1H4 resulted in significant growth suppression. Furthermore, complete inhibition of tumor growth was observed following multiple injections of AdIL-1H4. The anti-tumor activity of IL-1H4 was abrogated in nude and SCID mice and in IL-12-, IFN-γ-, or Fas ligand-deficient mice. In contrast, IL-1H4 was able to confer substantial anti-tumor effects in NKT-deficient mice. These results suggest that IL-1H4 could play an important role in the link between innate and adaptive immunity and may be useful for tumor immunotherapy.
CITATION STYLE
Gao, W., Kumar, S., Lotze, M. T., Hanning, C., Robbins, P. D., & Gambotto, A. (2003). Innate Immunity Mediated by the Cytokine IL-1 Homologue 4 (IL-1H4/IL-1F7) Induces IL-12-Dependent Adaptive and Profound Antitumor Immunity. The Journal of Immunology, 170(1), 107–113. https://doi.org/10.4049/jimmunol.170.1.107
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