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In contrast, melanoma arising in pigmented uveal layers of the eye metastasizes mostly in the liver. The mechanisms of these metastases, which are ultimately resistant to therapy, are still unclear. Metastasis via intravascular dissemination of tumour cells is widely accepted as a central paradigm. However, we have previously described an alternative mode of tumour dissemination, extravascular migratory metastasis, based on clinical and experimental data. This mechanism is characterised by the interaction of cancer cells with the abluminal vascular surface, which defines angiotropism. Here, we employed our 3D co-culture approach to monitor cutaneous and uveal human melanoma cells dynamics in presence of vascular tubules. Using time-lapse microscopy, we evaluated angiotropism, the migration of tumour cells along vascular tubules and the morphological changes occurring during these processes. Cutaneous and uveal melanoma cells were injected in zebrafish embryos in order to develop xenografts. Employing <jats:italic>in vivo<\/jats:italic> imaging coupled with 3D reconstruction, we monitored the interactions between cancer cells and the external surface of zebrafish vessels. Overall, our results indicate that cutaneous and uveal melanoma cells spread similarly along the abluminal vascular surfaces, <jats:italic>in vitro<\/jats:italic> and <jats:italic>in vivo<\/jats:italic>.<\/jats:p>","DOI":"10.1038\/s41598-018-28515-6","type":"journal-article","created":{"date-parts":[[2018,7,5]],"date-time":"2018-07-05T10:20:37Z","timestamp":1530786037000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":40,"title":["Angiotropism and extravascular migratory metastasis in cutaneous and uveal melanoma progression in a zebrafish model"],"prefix":"10.1038","volume":"8","author":[{"given":"Giulia","family":"Fornabaio","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Raymond L.","family":"Barnhill","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claire","family":"Lugassy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8758-1594","authenticated-orcid":false,"given":"Laurent A.","family":"Bentolila","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nathalie","family":"Cassoux","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sergio","family":"Roman-Roman","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Samar","family":"Alsafadi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8551-2846","authenticated-orcid":false,"given":"Filippo","family":"Del Bene","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2018,7,11]]},"reference":[{"issue":"5","key":"28515_CR1","doi-asserted-by":"publisher","first-page":"485","DOI":"10.1080\/00313020412331282708","volume":"36","author":"RL Barnhill","year":"2004","unstructured":"Barnhill, R. 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