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Sodium caffeate induces endothelial cell apoptosis and inhibits VEGF expression in cancer cells

Feng Xu1, Zhi-Gang Ou-Yang, Sheng-Hua Zhang

  • 1Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.

Yao Xue Xue Bao = Acta Pharmaceutica Sinica
|August 25, 2006
PubMed
Abstract

Insights

Sodium caffeate (SCA) induces endothelial cell apoptosis and suppresses VEGF expression and type IV collagenase activity in cancer cells. This suggests SCA may be effective in modulating tumor angiogenesis and the tumor microenvironment.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cancer Research

Background:

  • Tumor angiogenesis is crucial for cancer growth and metastasis.
  • Vascular Endothelial Growth Factor (VEGF) plays a key role in angiogenesis.
  • Type IV collagenase activity, including MMP-2 and MMP-9, is essential for extracellular matrix degradation during tumor invasion.

Purpose of the Study:

  • To investigate the effects of sodium caffeate (SCA) on endothelial cell apoptosis.
  • To determine SCA's impact on VEGF expression in cancer cells.
  • To assess SCA's inhibitory effects on type IV collagenase activity.

Main Methods:

  • Endothelial cell apoptosis was assessed using flow cytometry, DNA electrophoresis, and morphological analysis.
  • VEGF expression was quantified via Western blotting.
  • Type IV collagenase activity and antibody binding were measured using zymography and ELISA.

Main Results:

  • Sodium caffeate (SCA) induced apoptosis in human umbilical vein endothelial cells (ECV304) in a dose- and time-dependent manner.
  • SCA treatment significantly reduced VEGF expression in hepatoma (HepG-2) and prostate carcinoma (DU145) cells.
  • SCA inhibited the degradation activity of type IV collagenases (MMP-2, MMP-9) secreted by pulmonary carcinoma (PG) cells.

Conclusions:

  • Sodium caffeate (SCA) demonstrates potent pro-apoptotic effects on endothelial cells.
  • SCA effectively suppresses VEGF expression and type IV collagenase activity in various cancer cells.
  • These findings indicate SCA's potential as an anti-angiogenic agent for cancer therapy.

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