Activators of angiogenesis include growth factors, such as vascular endothelial growth factor (VEGF), platelet-derived growth factor (PDGF), and hypoxic conditions that activate hypoxia-inducible factor-1 (HIF-1) which in turn upregulate angiogenic proteins as well as angiogenic oncogenes [9].The transcription factor TWIST is known to induce an embryonic event termed epithelial-mesenchymal transit