
Deregulated expression of the hepatocyte growth factor (HGF) receptor, c-Met, in cancer contributes to tumor progression and metastasis. The objective of this study was to determine whether blocking c-Met with an orally available c-Met inhibitor, PF-2341066, reduces tumor burden and increases survival in a xenograft model of ovarian cancer metastasis. Treatment of mice injected interperitoneally with SKOV3ip1 cells showed reduced overall tumor burden. Tumor weight and the number of metastases were reduced by 55% (P < .0005) and 62% (P < .0001), respectively. Treatment also increased median survival from 45 to 62 days (P = .0003). In vitro, PF-2341066 reduced HGF-stimulated phosphorylation of c-Met in the tyrosine kinase domain as well as phosphorylation of the downstream signaling effectors, Akt and Erk. It was apparent that inhibition of the pathways was functionally important because HGF-induced branching morphogenesis was also inhibited. In addition, proliferation and adhesion to various extracellular matrices were inhibited by treatment with PF-2341066, and the activity of matrix metalloproteinases was decreased in tumor tissue from treated mice compared with those receiving vehicle. Overall, these data indicate that PF-2341066 effectively reduces tumor burden in an in vivo model of ovarian cancer metastasis and may be a good therapeutic candidate in the treatment of patients with ovarian cancer.
Mitogen-Activated Protein Kinase 1, Ovarian Neoplasms, Mitogen-Activated Protein Kinase 3, Hepatocyte Growth Factor, Blotting, Western, Cell Cycle, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, Mice, Nude, Apoptosis, Immunohistochemistry, Mice, Crizotinib, Piperidines, Cell Line, Tumor, Animals, Humans, Female, Neoplasm Metastasis, Phosphorylation, Proto-Oncogene Proteins c-akt, RC254-282, Cell Proliferation
Mitogen-Activated Protein Kinase 1, Ovarian Neoplasms, Mitogen-Activated Protein Kinase 3, Hepatocyte Growth Factor, Blotting, Western, Cell Cycle, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, Mice, Nude, Apoptosis, Immunohistochemistry, Mice, Crizotinib, Piperidines, Cell Line, Tumor, Animals, Humans, Female, Neoplasm Metastasis, Phosphorylation, Proto-Oncogene Proteins c-akt, RC254-282, Cell Proliferation
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| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |
