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Elucidation of the mechanisms underlying the angiogenic effects of ginsenoside Rg1 in vivo and in vitro
Angiogenesis (2005)
  • Kelvin Chan
Abstract

The major active constituents of ginseng are ginsenosides, and Rg1 is a predominant compound of the total extract. Recent studies have demonstrated that Rg1 can promote angiogenesis in vivo and in vitro. In this study, we used a DNA microarray technology to elucidate the mechanisms of action of Rg1. We report that Rg1 induces the proliferation of HUVECs, monitored using [3H]-thymidine incorporation and Trypan blue exclusion assays. Furthermore, Rg1 (150–600 nM) also showed an enhanced tube forming inducing effect on the HUVEC. Rg1 was also demonstrated to promote angiogenesis in an in vivo Matrigel plug assay, and increase endothelial sprouting in the ex vivo rat aorta ring assay. Differential gene expression profile of HUVEC following treatment with Rg1 revealed the expression of genes related to cell adhesion, migration and cytoskeleton, including RhoA, RhoB, IQGAP1, CALM2, Vav2 and LAMA4. Our results suggest that Rg1 can promote angiogenesis in multiple models, and this effect is partly due to the modulation of genes that are involved in the cytoskeletal dynamics, cell–cell adhesion and migration.

Keywords
  • Angiogenesis,
  • Ginsenosides,
  • Gene Expression Profiling,
  • HUVEC,
  • Microarray,
  • Rg1
Publication Date
2005
Citation Information
Kelvin Chan. "Elucidation of the mechanisms underlying the angiogenic effects of ginsenoside Rg1 in vivo and in vitro" Angiogenesis Vol. 8 Iss. 3 (2005)
Available at: http://works.bepress.com/kelvin_chan/98/