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Vessel co-option mediates resistance to anti-angiogenic therapy in liver metastases
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2016 (English)In: Nature Medicine, ISSN 1078-8956, E-ISSN 1546-170X, Vol. 22, no 11, 1294-1302 p.Article in journal (Refereed) Published
Abstract [en]

The efficacy of angiogenesis inhibitors in cancer is limited by resistance mechanisms that are poorly understood. Notably, instead of through the induction of angiogenesis, tumor vascularization can occur through the nonangiogenic mechanism of vessel co-option. Here we show that vessel co-option is associated with a poor response to the anti-angiogenic agent bevacizumab in patients with colorectal cancer liver metastases. Moreover, we find that vessel co-option is also prevalent in human breast cancer liver metastases, a setting in which results with anti-angiogenic therapy have been disappointing. In preclinical mechanistic studies, we found that cancer cell motility mediated by the actin-related protein 2/3 complex (Arp2/3) is required for vessel co-option in liver metastases in vivo and that, in this setting, combined inhibition of angiogenesis and vessel co-option is more effective than the inhibition of angiogenesis alone. Vessel co-option is therefore a clinically relevant mechanism of resistance to anti-angiogenic therapy and combined inhibition of angiogenesis and vessel co-option might be a warranted therapeutic strategy.

Place, publisher, year, edition, pages
2016. Vol. 22, no 11, 1294-1302 p.
National Category
Cancer and Oncology
Identifiers
URN: urn:nbn:se:umu:diva-128965DOI: 10.1038/nm.4197ISI: 000387302300022PubMedID: 27748747OAI: oai:DiVA.org:umu-128965DiVA: diva2:1060810
Available from: 2016-12-30 Created: 2016-12-20 Last updated: 2017-05-29Bibliographically approved

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