P130Cas/bcar1 mediates zebrafish caudal vein plexus angiogenesis.

P130Cas/bcar1 mediates zebrafish caudal vein plexus angiogenesis.
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P130CAS/BCAR1介导斑马鱼尾静脉丛血管生成。

DOI:
10.1038/s41598-020-71753-w
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发表时间:
2020-09-24
期刊:
影响因子:
4.6
通讯作者:
Frankel P
Frankel P
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Wisniewski L;French V;Lockwood N;Valdivia LE;Frankel P

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P130CAS/BCAR1属于CAS衔接蛋白家族,在细胞迁移、细胞周期调控、细胞凋亡等方面具有重要的调控作用。之前,我们和其他人发现P130CAS在体外介导VEGF-A和PDGF信号传导,但其在体内的心血管功能仍然相对未知。我们在这里描述了斑马鱼P130CAS的一种新的缺失模型。通过体内显微镜和转基因血管报告器,我们观察到bcar1 - / -斑马鱼在发育过程中没有出现动脉血管生成或心脏缺陷,但它们明显无法形成尾静脉丛(CVP)。bcar1−/−胚胎CVP内的内皮细胞(ECs)产生较少的丝状结构,并且不能有效地与邻近细胞分离,导致腹侧延伸和整个CVP面积显着减少。在机制上,我们发现P130Cas介导bmp2b诱导的胚胎发育中的ECs异位血管生成芽,并为Src家族激酶在CVP发育中的作用提供药理学证据。
P130CAS/BCAR1 belongs to the CAS family of adaptor proteins, with important regulatory roles in cell migration, cell cycle control, and apoptosis. Previously, we and others showed that P130CAS mediates VEGF-A and PDGF signalling in vitro, but its cardiovascular function in vivo remains relatively unexplored. We characterise here a novel deletion model of P130CAS in zebrafish. Using in vivo microscopy and transgenic vascular reporters, we observed that while bcar1−/− zebrafish showed no arterial angiogenic or heart defects during development, they strikingly failed to form the caudal vein plexus (CVP). Endothelial cells (ECs) within the CVP of bcar1−/− embryos produced fewer filopodial structures and did not detach efficiently from neighbouring cells, resulting in a significant reduction in ventral extension and overall CVP area. Mechanistically, we show that P130Cas mediates Bmp2b-induced ectopic angiogenic sprouting of ECs in the developing embryo and provide pharmacological evidence for a role of Src family kinases in CVP development.
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