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Copyright ©2014 Baishideng Publishing Group Inc.
World J Gastroenterol. Nov 14, 2014; 20(42): 15467-15475
Published online Nov 14, 2014. doi: 10.3748/wjg.v20.i42.15467
Figure 1
Figure 1 Representative model for tumor angiogenesis induced by hepatocytes growth factor/Scater factor-Met signaling. Intrinsically hepatocytes growth factor/Scater factor (HGF/SF) activates Met receptor on the surface of host endothelial cells leading to cell proliferation and migration. Extrinsically, HGF/SF-Met signaling turns on the angiogenic switch by simultaneous upregulation of pro-angiogenic vascular endothelial growth factors (VEGF) expression and down regulation of thrombospondin 1 (TSP-1) expression from the tumor cells.