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Shared mechanism of teratogenicity of anti-angiogenic drugs identified in the chicken embryo model

机译:鸡胚胎模型中确定的抗血管生成药物致畸作用的共有机制

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摘要

Angiogenesis, the formation of new blood vessels, is essential for tumor growth, stabilization and progression. Angiogenesis inhibitors are now widely used in the clinic; however, there are relatively few published studies on the mechanism of their presumed teratogenic effects. To address this issue, we screened a variety of angiogenesis inhibitors in developing zebrafish and chicken embryo models to assess for developmental defects and potential teratogenic effects. We confirmed previous reports that sunitinib, sorafenib and TNP-470 are teratogenic and demonstrate that axitinib, pazopanib, vandetanib, and everolimus are also teratogens in these models. A dose response study identified the drugs inhibit HUVEC cell proliferation in vitro, and also target the developing blood vessels of embryos in vivo. This provides further evidence for the potential risk of fetal toxicity when using these drugs in a clinical setting, and emphasizes the importance of the development and maintenance of the vasculature in the embryo. We conclude that angiogenesis inhibitors, regardless of the molecular target, are teratogenic when exposed to chicken embryos.
机译:血管生成,即新血管的形成,对于肿瘤的生长,稳定和进展至关重要。血管生成抑制剂现已在临床中广泛使用。但是,关于其致畸作用机理的研究很少。为了解决这个问题,我们在开发斑马鱼和鸡胚胎模型中筛选了各种血管生成抑制剂,以评估发育缺陷和潜在的致畸作用。我们证实了先前的报道,舒尼替尼,索拉非尼和TNP-470具有致畸性,并证明阿西替尼,帕唑帕尼,vandetanib和依维莫司也是这些模型的致畸剂。一项剂量反应研究确定了这些药物在体外抑制HUVEC细胞增殖,并且还靶向体内胚胎的发育中的血管。当在临床环境中使用这些药物时,这为胎儿毒性的潜在风险提供了进一步的证据,并强调了胚胎中脉管系统的发育和维持的重要性。我们得出的结论是,与分子靶标无关,血管生成抑制剂在暴露于鸡胚时具有致畸性。

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