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Saxatilin Suppresses Tumor-induced Angiogenesis by Regulating VEGF Expression in NCI-H460 Human Lung Cancer Cells

  • Jang, Yoon-Jung (Department of Biochemistry, College of Science, Yonsei University) ;
  • Kim, Dong-Seok (Department of Biochemistry, College of Science, Yonsei University) ;
  • Jeon, Ok-Hee (Department of Biochemistry, College of Science, Yonsei University) ;
  • Kim, Doo-Sik (Department of Biochemistry, College of Science, Yonsei University)
  • Published : 2007.05.31

Abstract

Tumor growth and metastasis are dependent on angiogenesis, and endothelial cell invasion and migration are apparent means of regulating tumor progression. We report here that saxatilin, a snake venom-derived disintegrin, suppresses the angiogenesis-inducing properties of NCI-H460 human lung cancer cells. Culture supernatants of NCI-H460 cells are able to induce human umbilical vascular endothelial cell (HUVEC) invasion and tube formation. However, treatment of the cancer cells with saxatilin resulted in reduced angiogenic activity of the culture supernatant. This suppressed angiogenic property was found to be associated with the level of vascular endothelial growth factor (VEGF) in the culture supernatant. Further experimental evidence indicated that saxatilin inhibits VEGF production in NCI-H460 cells by affecting hypoxia induced factor-1$\alpha$ (HIF-1$\alpha$) expression via the Akt pathway.

Keywords

References

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