Platelet-derived growth factor receptor beta is critical for zebrafish intersegmental vessel formation.

Platelet-derived growth factor receptor beta is critical for zebrafish intersegmental vessel formation.
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DOI:
10.1371/journal.pone.0011324
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发表时间:
2010-06-25
期刊:
影响因子:
3.7
通讯作者:
Lien CL
Lien CL
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Wiens KM;Lee HL;Shimada H;Metcalf AE;Chao MY;Lien CL

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Platelet-derived growth factor receptor β (PDGFRβ) is a tyrosine kinase receptor known to affect vascular development. The zebrafish is an excellent model to study specific regulators of vascular development, yet the role of PDGF signaling has not been determined in early zebrafish embryos. Furthermore, vascular mural cells, in which PDGFRβ functions cell autonomously in other systems, have not been identified in zebrafish embryos younger than 72 hours post fertilization. In order to investigate the role of PDGFRβ in zebrafish vascular development, we cloned the highly conserved zebrafish homolog of PDGFRβ. We found that pdgfrβ is expressed in the hypochord, a developmental structure that is immediately dorsal to the dorsal aorta and potentially regulates blood vessel development in the zebrafish. Using a PDGFR tyrosine kinase inhibitor, a morpholino oligonucleotide specific to PDGFRβ, and a dominant negative PDGFRβ transgenic line, we found that PDGFRβ is necessary for angiogenesis of the intersegmental vessels. Our data provide the first evidence that PDGFRβ signaling is required for zebrafish angiogenesis. We propose a novel mechanism for zebrafish PDGFRβ signaling that regulates vascular angiogenesis in the absence of mural cells.
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