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Novel Anti-Angiogenic Activity in Rubus coreanus Miquel Water Extract Suppresses VEGF-Induced Angiogenesis

  • Kim, Eok-Cheon (Division of Biological Science and Technology, Yonsei-Fraunhofer Medical Device Lab., College of Science and Technology, Yonsei University) ;
  • Kim, Hye Jin (Division of Biological Science and Technology, Yonsei-Fraunhofer Medical Device Lab., College of Science and Technology, Yonsei University) ;
  • Kim, Tack-Joong (Division of Biological Science and Technology, Yonsei-Fraunhofer Medical Device Lab., College of Science and Technology, Yonsei University)
  • Received : 2014.09.24
  • Accepted : 2014.11.10
  • Published : 2014.12.31

Abstract

Vascular endothelial growth factor (VEGF) is a key factor involved in the induction of angiogenesis and has become an attractive target for anti-angiogenesis therapies. The purpose of this study was to elucidate the anti-angiogenic activity of Rubus coreanus Miquel water extract (RCME). Rubus coreanus Miquel has long been employed as a traditional medicine, and recent studies have demonstrated that it has measureable biological activities. Thus, we investigated for the first time the effect of RCME on angiogenesis and its underlying signaling pathways. The effects of RCME were tested on in vitro models of angiogenesis, namely, proliferation, migration, invasion and tube formation of human umbilical vein endothelial cells as well as an ex vivo model of vessel sprouting from the rat aorta in response to VEGF. We observed that VEGF-induced angiogenesis was strongly suppressed by RCME treatment compared to that of the control group. Moreover, we found that RCME inhibited VEGF-induced activation of matrix metalloproteinases and phosphorylation of extracellular signal-regulated kinase and p38, and also effectively inhibited phosphorylation of VEGF receptor 2. These results indicated that RCME inhibits angiogenesis by suppressing phosphorylation of the VEGF receptor and may be useful for the treatment of angiogenesis-dependent diseases such as cancer and diabetic retinopathy.

Keywords

References

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