Small molecule inducers of angiogenesis for tissue engineering

Tissue Eng. 2006 Jul;12(7):1903-13. doi: 10.1089/ten.2006.12.1903.

Abstract

Engineering of implantable tissues requires rapid induction of angiogenesis to meet the significant oxygen and nutrient demands of cells during tissue repair. To this end, our laboratories have utilized medicinal chemistry to synthesize non-peptide-based inducers of angiogenesis to aid tissue engineering. In this study, we describe the evaluation of SC-3-149, a small molecule compound with proliferative effects on vascular endothelial cells. Specifically, exogenous exposure of SC-3-149 induced an 18-fold increase in proliferation of human microvascular endothelial cells in vitro at low micromolar potency by day 14 in culture. Moreover, SC-3-149 significantly increased the formation of endothelial cord and tubelike structures in vitro, and improved endothelial scratch wound healing within 24 h. SC-3-149 also significantly inhibited vascular endothelial cell death owing to serum deprivation and high acidity (pH 6). Concurrent incubation of SC-3-149 with vascular endothelial growth factor increased cell survivability under serum-deprived conditions by an additional 7%. In addition, in vivo injection of SC-3-149 into the rat mesentery produced qualitative increases in microvessel length density. Taken together, our studies suggest that SC-3-149 and its analogs may serve as promising new angiogenic agents for targeted drug delivery and therapeutic angiogenesis in tissue engineering.

MeSH terms

  • Angiogenesis Inducing Agents / chemical synthesis
  • Angiogenesis Inducing Agents / pharmacology*
  • Animals
  • Bioprosthesis
  • Cell Proliferation / drug effects*
  • Cells, Cultured
  • Endothelial Cells / cytology
  • Endothelial Cells / physiology*
  • Female
  • Heterocyclic Compounds, 3-Ring / chemical synthesis
  • Heterocyclic Compounds, 3-Ring / pharmacology*
  • Humans
  • Indoles / chemical synthesis*
  • Indoles / pharmacology
  • Neovascularization, Physiologic / drug effects*
  • Rats
  • Rats, Sprague-Dawley
  • Time Factors
  • Tissue Engineering
  • Wound Healing / drug effects

Substances

  • Angiogenesis Inducing Agents
  • Heterocyclic Compounds, 3-Ring
  • Indoles
  • SC-3-149