title: Inhibition of tumor growth and invasion by a four-kringle antagonist (HGF/NK4) for hepatocyte growth factor.
abstract: Invasion of various carcinoma cells follows their interaction with stromal cells. Hepatocyte growth factor (HGF), four-kringle-containing growth factor, is a mesenchymal or stromal-derived mediator which affects the growth and the invasiveness of carcinoma cells. We now have evidence that a four-kringle-containing antagonist for HGF, HGF/NK4 inhibits invasion of tumors in vivo, as well as in vitro. HGF/NK4 competitively inhibited the binding of HGF to Met/ HGF receptors on GB-d1 human gallbladder carcinoma cells. HGF induced invasion of the cells through Matrigel basement membrane components and into collagen gels, but HGF-induced invasion was inhibited by HGF/NK4. Invasion of GB-d1 cells was induced by co-cultivation with stromal fibroblasts, which mimics tumor-stromal interaction, but it was almost completely suppressed by HGF/NK4. Likewise, invasive growth induced by HGF in collagen gels in GB-dl cells, HuCC-T1 human cholangiocarcinoma cells, and ME-180 human uterus cervical carcinoma cells was also strongly inhibited by HGF/NK4. When GB-d1 cells were implanted subcutaneously into nude mouse, tumor cells invaded muscular tissue, but the infusion of HGF/NK4 inhibited this invasion. Furthermore, HGF/NK4 increased apoptotic cell death of GB-d1 cells and inhibited tumor growth in vivo. These results indicate that HGF/ NK4 may inhibit growth and invasion of carcinoma cells, as mediated by HGF during tumor-stromal interactions. We propose that there is a unique therapeutic potential for HGF/NK4 to prevent tumor invasion and perhaps even metastasis.
authors.affiliation: Department of Oncology, Biomedical Research Center, Osaka University Medical School, Suita, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Date
authors.forename: K
authors.initials: K
authors.lastname: Matsumoto
authors.forename: K
authors.initials: K
authors.lastname: Kuba
authors.forename: H
authors.initials: H
authors.lastname: Shimura
authors.forename: M
authors.initials: M
authors.lastname: Tanaka
authors.forename: T
authors.initials: T
authors.lastname: Nakamura
mesh_terms: D000368:Aged; D000818:Animals; D005260:Female; D005706:Gallbladder Neoplasms / Q000503:physiopathology*; D017228:Hepatocyte Growth Factor / Q000037:antagonists & inhibitors*; D006801:Humans; D018082:Kringles; D008297:Male; D020780:Matrix Metalloproteinase 9; D061965:Matrix Metalloproteinase Inhibitors; D051379:Mice; D008819:Mice, Nude; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009368:Neoplasm Transplantation; D010766:Phosphorylation; D019859:Proto-Oncogene Proteins c-met / Q000378:metabolism; D014407:Tumor Cells, Cultured; D014443:Tyrosine; D014568:Urokinase-Type Plasminogen Activator / Q000037:antagonists & inhibitors
chemical_list: D061965:Matrix Metalloproteinase Inhibitors; D014443:Tyrosine; D017228:Hepatocyte Growth Factor; D019859:Proto-Oncogene Proteins c-met; D014568:Urokinase-Type Plasminogen Activator; D020780:Matrix Metalloproteinase 9