Triphala and its active constituent chebulinic acid are natural inhibitors of vascular endothelial growth factor-a mediated angiogenesis

PLoS One. 2012;7(8):e43934. doi: 10.1371/journal.pone.0043934. Epub 2012 Aug 24.

Abstract

Triphala churna (THL) is a combination of three fruits that has been used for many years in India for the treatment of various diseases. There are now reports which indicate that THL can inhibit growth of malignant tumors in animals. However, the mechanisms by which THL mediates its anti-tumor actions are still being explored. Because vascular endothelial growth factor-A (VEGF) induced angiogenesis plays a critical role in the pathogenesis of cancer, we therefore investigated whether tumor inhibitory effects of THL or its active constituents are through suppression of VEGF actions. We herein report that THL and chebulinic (CI) present in THL can significantly and specifically inhibit VEGF induced angiogenesis by suppressing VEGF receptor-2 (VEGFR-2) phosphorylation. These results are of clinical significance as these inexpensive and non-toxic natural products can be used for the prevention and treatment of diseases where VEGF induced angiogenesis has an important role.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Angiogenesis Inhibitors / pharmacology
  • Angiogenesis Inhibitors / therapeutic use*
  • Animals
  • Cell Proliferation / drug effects
  • Endothelium, Vascular / drug effects*
  • Endothelium, Vascular / metabolism
  • Human Umbilical Vein Endothelial Cells
  • Humans
  • Hydrolyzable Tannins / pharmacology
  • Hydrolyzable Tannins / therapeutic use*
  • Male
  • Mice
  • Neovascularization, Pathologic / chemically induced
  • Neovascularization, Pathologic / drug therapy*
  • Neovascularization, Pathologic / metabolism
  • Phosphorylation / drug effects
  • Plant Extracts / pharmacology
  • Plant Extracts / therapeutic use*
  • Vascular Endothelial Growth Factor A / pharmacology*
  • Vascular Endothelial Growth Factor Receptor-2 / metabolism

Substances

  • Angiogenesis Inhibitors
  • Hydrolyzable Tannins
  • Plant Extracts
  • Vascular Endothelial Growth Factor A
  • triphala
  • chebulinic acid
  • Vascular Endothelial Growth Factor Receptor-2