Matrix metalloproteinase-9 triggers the angiogenic switch during carcinogenesis

Gabriele Bergers, Rolf Brekken, Gerald McMahon, Thiennu H. Vu, Takeshi Itoh, Kazuhiko Tamaki, Kazuhiko Tanzawa, Philip Thorpe, Shigeyoshi Itohara, Zena Werb, Douglas Hanahan

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Abstract

During carcinogenesis of pancreatic islets in transgenic mice, an angiogenic switch activates the quiescent vasculature. Paradoxically, vascular endothelial growth factor (VEGF) and its receptors are expressed constitutively. Nevertheless, a synthetic inhibitor (SU5416) of VEGF signalling impairs angiogenic switching and tumour growth. Two metalloproteinases, MMP-2/gelatinase-A and MMP-9/gelatinase-B, are upregulated in angiogenic lesions. MMP-9 can render normal islets angiogenic, releasing VEGF. MMP inhibitors reduce angiogenic switching, and tumour number and growth, as does genetic ablation of MMP-9. Absence of MMP-2 does not impair induction of angiogenesis, but retards tumour growth, whereas lack of urokinase has no effect. Our results show that MMP-9 is a component of the angiogenic switch.

Original languageEnglish (US)
Pages (from-to)737-744
Number of pages8
JournalNature cell biology
Volume2
Issue number10
DOIs
StatePublished - Oct 1 2000

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ASJC Scopus subject areas

  • Cell Biology

Cite this

Bergers, G., Brekken, R., McMahon, G., Vu, T. H., Itoh, T., Tamaki, K., Tanzawa, K., Thorpe, P., Itohara, S., Werb, Z., & Hanahan, D. (2000). Matrix metalloproteinase-9 triggers the angiogenic switch during carcinogenesis. Nature cell biology, 2(10), 737-744. https://doi.org/10.1038/35036374