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Int J Cancer ; 120(6): 1261-7, 2007 Mar 15.
Article in English | MEDLINE | ID: mdl-17192924

ABSTRACT

Thromboembolic complications are frequently associated with advanced cancer. Interestingly, one of the major initiators of blood coagulation, tissue factor (TF), is reported to be overexpressed in several tumor types and can be found on both tumor cells and tumor vasculature. Although the exact mechanisms have yet to be elucidated, TF expressed on tumor cells can trigger intracellular signaling events through various pathways that can lead to tumor angiogenesis, proliferation, and metastasis. There exists preclinical evidence that disruption of TF dependent signaling can effectively inhibit tumor cell migration, metastasis, and angiogenesis. Here, we report for the first time that an antibody to tissue factor can also prevent tumor growth in vivo. Prophylactic administration of CNTO 859, a humanized anti-human TF antibody, was shown to inhibit experimental lung metastasis of MDA-MB-231 human breast carcinoma cells by over 99% compared to a control antibody. Furthermore, therapeutic doses of CNTO 859 were shown to reduce tumor incidence and growth of orthotopically implanted MDA-MB-231 cells.


Subject(s)
Antibodies, Monoclonal/therapeutic use , Breast Neoplasms/drug therapy , Carcinoma/drug therapy , Immunoglobulin G/therapeutic use , Lung Neoplasms/drug therapy , Thromboplastin/immunology , Animals , Antibodies, Monoclonal/immunology , Antibodies, Monoclonal/pharmacology , Breast Neoplasms/pathology , Carcinoma/prevention & control , Carcinoma/secondary , Cell Proliferation/drug effects , Female , Humans , Immunoglobulin G/immunology , Immunoglobulin G/pharmacology , Lung Neoplasms/prevention & control , Lung Neoplasms/secondary , Mice , Mice, Inbred Strains , Xenograft Model Antitumor Assays
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