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The effects of the somatostatin analog octreotide on angiogenesis in vitro

R Danesi1, M Del Tacca

  • 1Scuola Superiore di Studi Universitari e di Perfezionamento S. Anna, Pisa, Italy.

Metabolism: Clinical and Experimental
|August 1, 1996
PubMed

Insights

Octreotide, a somatostatin analog, effectively inhibits the in vitro proliferation of human endothelial cells and rat vascular cells. This antiangiogenic effect was observed across different cell types and culture conditions, demonstrating its potential in vascular research.

Area of Science:

  • Vascular Biology
  • Endocrinology
  • Pharmacology

Background:

  • Angiogenesis is crucial for tumor growth and metastasis.
  • Somatostatin analogs, like octreotide, have shown potential in inhibiting cell proliferation.
  • Understanding the antiangiogenic effects of octreotide is important for therapeutic development.

Purpose of the Study:

  • To investigate the in vitro antiangiogenic effects of octreotide.
  • To assess octreotide's impact on human umbilical vein endothelial cells (HUV-EC-C) and rat vascular cells.
  • To determine octreotide's efficacy in inhibiting endothelial and smooth muscle cell proliferation and sprouting.

Main Methods:

  • In vitro culture of HUV-EC-C cells and rat aortic explants.
  • Culturing cells on fibronectin-coated dishes and in fibrin gel.
  • Measuring cell proliferation using 3H-thymidine uptake and tetrazolium bioreduction.
  • Quantifying cell sprouting via image analysis.

Main Results:

  • 10(-9) mol/L octreotide reduced HUV-EC-C cell proliferation by 37%.
  • 10(-8) mol/L octreotide inhibited endothelial and smooth muscle cell proliferation on fibronectin by 32.6%.
  • Octreotide reduced aortic ring cell sprouting in fibrin by 33.2%.

Conclusions:

  • Octreotide demonstrates significant in vitro antiangiogenic properties.
  • The somatostatin analog effectively inhibits vascular cell proliferation and sprouting.
  • These findings support octreotide's potential as an antiangiogenic agent.

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