In vitro Angiogenic Activity of Aloe vera Gel on Calf Pulmonary Artery Endothelial (CPAE) Cells

  • Lee, Myoung-Jin (Institute of Biotechnology, Yeungnam University) ;
  • Lee, Ok-Hee (Department of Molecular Biology, Pusan National University) ;
  • Yoon, Soo-Hong (College of Pharmacy, Catholic University of Taegu-Hyosung) ;
  • Lee, Seung-Ki (College of Pharmacy, Seoul National University) ;
  • Chung, Myung-Hee (College of Medicine, Seoul National University) ;
  • Park, Young-In (College of Natural Resources, Korea University) ;
  • Sung, Chung-Ki (College of Pharmacy, Chonnam National University) ;
  • Choi, Jae-Sue (Department of Food and Nutrition, Pukyong National University) ;
  • Kim, Kyu-Won (Department of Molecular Biology, Pusan National University)
  • Published : 1998.06.01

Abstract

Angiogenic activity of Aloe vera gel was investigated by in vitro assay. We obtained the most active fraction from dichloromethane extract of Aloe vera gel by partitioning between hexane and 90% aqueous methanol. The most active fraction (F3) increased the proliferation of calf pulmonary artery endothelial (CPAE) cells. In addition, F3 fraction induced CPAE cells to invade type I collagen gel and form capillary-like tube through in vitro angiogenesis assay, and increased the invasion of CPAE cells into matrigel through in vitro invasion assay. Furthermore, the effect on the MRNA expression of proteolytic enzymes which are key participants in the regulation of extracellular matrix degradation was investigated by northern blot analysis. F3 fraction enhanced mRNA expression of urokinase-type plasminogen activator (u-PA), matrix metalloproteinase-2 (MMP-2), and membrane-type MMP (MT-MMP) in CPAE cells whereas the expression of plasminogen activator inhibitory (PAl-1) mRNA was not changed.

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