PUBLICATION

AGS-30, an andrographolide derivative, suppresses tumor angiogenesis and growth in vitro and in vivo

Authors
Li, J., Li, F., Tang, F., Zhang, J., Li, R., Sheng, D., Lee, S.M., Zhou, G.C., Leung, G.P.
ID
ZDB-PUB-191111-20
Date
2019
Source
Biochemical pharmacology   171: 113694 (Journal)
Registered Authors
Keywords
Andrographolide derivative, Anti-angiogenic, Colon cancer, VEGF
MeSH Terms
  • Angiogenesis Inhibitors/chemistry
  • Angiogenesis Inhibitors/pharmacology*
  • Animals
  • Animals, Genetically Modified
  • Cells, Cultured
  • Diterpenes/chemistry
  • Diterpenes/pharmacology*
  • Embryo, Nonmammalian/blood supply
  • Embryo, Nonmammalian/drug effects*
  • Embryo, Nonmammalian/embryology
  • HT29 Cells
  • Human Umbilical Vein Endothelial Cells/drug effects*
  • Human Umbilical Vein Endothelial Cells/metabolism
  • Humans
  • Male
  • Mice, Inbred C57BL
  • Mice, Nude
  • Molecular Structure
  • Neovascularization, Pathologic/prevention & control*
  • Rats, Sprague-Dawley
  • Xenograft Model Antitumor Assays/methods
  • Zebrafish/embryology*
  • Zebrafish/genetics
PubMed
31706845 Full text @ Biochem. Pharmacol.
Abstract
Poor bioavailability and limited efficacy are challenges associated with using andrographolide as a therapeutic agent. We recently synthesized AGS-30, a new andrographolide derivative, in our laboratory. In this study we investigated the potential anti-tumor effect of AGS-30 and the underlying mechanisms, particularly those related to angiogenesis. Results from our in vitro experiments showed that AGS-30 exerted anti-angiogenic effects by inhibiting endothelial cell proliferation, migration, invasion, and tube formation. Phosphorylation and activation of angiogenesis-related signaling molecules (e.g., vascular endothelial growth factor [VEGF] receptor 2, mitogen-activated protein kinase kinase 1/2, extracellular signal-regulated kinase 1/2, mechanistic target of rapamycin [mTOR], protein kinase B [Akt], and p38) were markedly reduced by AGS-30. Meanwhile, AGS-30 potently inhibited cell proliferation and phosphorylation of cell survival-related proteins (e.g., Akt, mTOR, and ERK1/2) and decreased the expression of VEGF in HT-29 colon cancer cells. AGS-30 blocked microvessel sprouting in a rat aortic ring model and blood vessel formation in zebrafish embryos and a mouse Matrigel plug model. Additionally, AGS-30 suppressed tumor growth and angiogenesis in HT-29 colon cancer cell xenografts in nude mice. These effects were not observed when same concentration of andrographolide, the parent compound of AGS-30, was used. Thus, AGS-30 exerted a strong antitumor effect by inhibiting tumor cell growth and angiogenesis and is a candidate compound for the treatment of cancer.
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