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Invasiveness and metastasis of retinoblastoma in an orthotopic zebrafish tumor model
Sun Yat Sen University, Peoples R China; Karolinska Institute, Sweden.
Karolinska Institute, Sweden; Shandong University, Peoples R China.
Linköping University, Department of Medical and Health Sciences, Division of Cardiovascular Medicine. Linköping University, Faculty of Medicine and Health Sciences. Karolinska Institute, Sweden.
Karolinska Institute, Sweden.
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2015 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 5, no 10351Article in journal (Refereed) Published
Abstract [en]

Retinoblastoma is a highly invasive malignant tumor that often invades the brain and metastasizes to distal organs through the blood stream. Invasiveness and metastasis of retinoblastoma can occur at the early stage of tumor development. However, an optimal preclinical model to study retinoblastoma invasiveness and metastasis in relation to drug treatment has not been developed. Here, we developed an orthotopic zebrafish model in which retinoblastoma invasion and metastasis can be monitored at a single cell level. We took the advantages of immune privilege and transparent nature of developing zebrafish embryos. Intravitreal implantation of color-coded retinoblastoma cells allowed us to kinetically monitor tumor cell invasion and metastasis. Further, interactions between retinoblastoma cells and surrounding microvasculatures were studied using a transgenic zebrafish that exhibited green fluorescent signals in blood vessels. We discovered that tumor cells invaded neighboring tissues and blood stream when primary tumors were at the microscopic sizes. These findings demonstrate that retinoblastoma metastasis occurs at the early stage and antiangiogenic drugs such as Vegf morpholino and sunitinib could potentially interfere with tumor invasiveness and metastasis. Thus, this orthotopic retinoblastoma model offers a new and unique opportunity to study the early events of tumor invasion, metastasis and drug responses.

Place, publisher, year, edition, pages
Nature Publishing Group: Open Access Journals - Option C / Nature Publishing Group , 2015. Vol. 5, no 10351
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Clinical Medicine
Identifiers
URN: urn:nbn:se:liu:diva-120338DOI: 10.1038/srep10351ISI: 000357861300001PubMedID: 26169357OAI: oai:DiVA.org:liu-120338DiVA: diva2:843906
Note

Funding Agencies|Swedish Research Council; Swedish Cancer Foundation; Karolinska Institute Foundation; Karolinska Institute distinguished professor award; Torsten Soderbergs foundation; Novo Nordisk Foundation; European Research Council (ERC) advanced grant ANGIOFAT [250021]

Available from: 2015-07-31 Created: 2015-07-31 Last updated: 2017-12-04

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