| abstract |
Compositions, and methods of use thereof, for the inhibition of tumor growth and killing of tumors having extensive microcirculation wherein the active agent is a compound blocking the Protein C system, preferably anti-Protein C antibody, anti-Protein S antibody, and C4b binding protein. In the most preferred embodiment, the Protein C blocking compound is provided in combination with a cytokine such as tumor necrosis factor (TNF), gamma interferon, interleukin-1, interleukin-2 and granulocyte-macrophage colony stimulating factor. Examples are provided demonstrating the administration of the Protein C blocking compound, alone or in combination with TNF, to dogs having canine veneral tumors, or fibrosarcoma, and an adenocarcinoma, and pigs with melanoma followed by significant tumor reduction. |