Volume 36, Issue 6 pp. 721-728
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Mast cells and tumour angiogenesis: The tumour-mediated release of an endothelial growth factor from mast cells

William R. Roche

Corresponding Author

William R. Roche

Kolling Institute of Medical Research, The Royal North Shore Hospital of Sydney, St. Leonards NSW 2065, Australia

Institute of Medical Research, Royal North Shore Hospital of Sydney, St. Leonards NSW 2065, AustraliaSearch for more papers by this author
First published: 15 December 1985
Citations: 50

Abstract

Exposure to tumour cells has previously been shown to induce mast cells to degranulate and release heparin. Isolated mast-cell granules were found to be mitogenic for endothelial cells in vitro. This effect was a property of mast-cell heparin, whose potency as a mitogen exceeded that of commercial heparins. The basis of this difference lay in the proteoglycan structure of the molecule. The release of heparin in mastcell-tumour co-cultures was examined by both endothelial cell proliferation and isotopic techniques. The kinetics and mode of release are described. The results are discussed in relation to the role of the mast cell in angiogenesis assays and tumour neovascularization.

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