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- W1997053062 abstract "Angiogenesis plays a key role in tumour growth and metastasis. The teleost zebrafish (Danio rerio) represents a promising alternative model in cancer research. Here, we describe a zebrafish yolk membrane (ZFYM) angiogenesis assays based on the injection of 1-30 ng of human recombinant FGF2 (rFGF2) in the perivitelline space of zebrafish embryos in the proximity of developing subintestinal vein vessels (SIVs) at 48 hrs after fertilization. The rFGF2 induces a rapid and dose-dependent angiogenic response from the SIV basket, characterized by the ectopic growth of newly formed, alkaline phosphatase-positive blood vessels. These vessels are formed by proliferating cells that incorporate bromodeoxyuridine and express the endothelial cell markers vegfr2/kdr and fli1. Microangiography shows that rFGF2-induced vessels are patent and connected to the systemic circulation of the embryo. In keeping with these observations, fli1:EGFP(+) cells isolated from transgenic tg(fli1:EGFP)(y1) zebrafish embryos express the tyrosine kinase (TK) FGF receptor-1 (FGFR1) and activate extracellular signal-regulated kinase signalling when stimulated in vitro by rFGF2. The low molecular weight TK-FGFR1 inhibitor SU5402 and the high molecular weight FGF2 antagonist long-pentraxin 3 inhibit the angiogenic activity of rFGF2 when added to fish water or when co-injected with the growth factor, respectively. Moreover, similar to rFGF2, injection of the zebrafish form of vascular endothelial growth factor-A (VEGF-A) induces a significant angiogenic response in the ZFYM assay that is suppressed by the VEGF receptor-2/KDR TK inhibitor SU5416. The ZFYM assay represents a novel tool for testing the activity of low and high molecular weight inhibitors targeting a defined angiogenic growth factor in zebrafish. The assay may offer significant advantages when compared to other animal models." @default.
- W1997053062 created "2016-06-24" @default.
- W1997053062 creator A5005942566 @default.
- W1997053062 creator A5014818296 @default.
- W1997053062 creator A5083631478 @default.
- W1997053062 date "2008-07-24" @default.
- W1997053062 modified "2023-10-01" @default.
- W1997053062 title "Fibroblast growth factor 2‐induced angiogenesis in zebrafish: the zebrafish yolk membrane (ZFYM) angiogenesis assay" @default.
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- W1997053062 doi "https://doi.org/10.1111/j.1582-4934.2008.00432.x" @default.
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