Suramin inhibits C6 glioma-induced angiogenesis in vitro

Journal of Cellular Biochemistry
Brenda L Coomber

Abstract

Aspects of tumor-induced angiogenesis in vitro were examined using an assay involving collagen gel invasion by a surface monolayer of bovine endothelial cells under the influence of serum free conditioned medium produced by C6 cells, an experimentally derived rat glial tumor cell line. The effects of the polyanionic compound suramin, known to interfere with growth factor/cell signaling on this process were evaluated. Collagen gel invasion was quantified by adding C6 conditioned medium with or without various doses of suramin to monolayers of bovine aortic endothelial cells grown on type I collagen gels in transwell inserts. Cultures were monitored with phase-contrast microscopy. After various periods of incubation collagen gels were fixed, embedded in epoxy resin, and 1-micron thick sections were stained with toluidine blue. Additional cultures were used to evaluate the effects of C6 conditioned medium and suramin on endothelial cell proliferation, and on chemotaxis through 8-microns pores. C6 glioma cell conditioned medium induced large vessel endothelial cells to sprout into the underlying collagen matrix and subsequently form networks of capillary like tubes. Conditioned medium was also chemotactic and mitogenic for these ce...Continue Reading

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Citations

May 15, 2003·Osteoarthritis and Cartilage·E B Hunziker, I M K Driesang
Feb 11, 2004·Neuro-oncology·John J LaterraUNKNOWN NABTT CNS Consortium study
Aug 2, 2005·Proceedings of the National Academy of Sciences of the United States of America·Molly M StevensV Prasad Shastri
May 13, 2009·Biochemical and Biophysical Research Communications·Mi-Sun WonKyeong Lee
Oct 12, 2004·Hematology/oncology Clinics of North America·Benjamin Purow, Howard A Fine
Apr 12, 2003·Neuroimaging Clinics of North America·Michael J Fisher, Peter C Adamson
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Feb 22, 2001·Journal of Clinical Oncology : Official Journal of the American Society of Clinical Oncology·K D MillerG W Sledge

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