Chemokine-guided angiogenesis directs coronary vasculature formation in zebrafish.

Chemokine-guided angiogenesis directs coronary vasculature formation in zebrafish.
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DOI:
10.1016/j.devcel.2015.04.001
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发表时间:
2015-05-26
期刊:
影响因子:
11.8
通讯作者:
Lien, Ching-Ling
Lien, Ching-Ling
中科院分区:
生物学1区
文献类型:
--
作者:
Harrison, Michael R. M.;Bussmann, Jeroen;Huang, Ying;Zhao, Long;Osorio, Arthela;Burns, C. Geoffrey;Burns, Caroline E.;Sucov, Henry M.;Siekmann, Arndt F.;Lien, Ching-Ling

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Interruption of coronary blood supply severely impairs heart function with often-fatal consequences for heart disease patients. However the formation and maturation of these coronary vessels is not fully understood. Here we provide a detailed analysis of coronary vessel development in zebrafish. We observe that coronary vessels form in zebrafish by angiogenic sprouting of arterial cells derived from the endocardium at the atrioventricular canal. Endothelial cells express the CXC-motif chemokine receptor Cxcr4a and migrate to vascularize the ventricle under the guidance of the myocardium-expressed ligand Cxcl12b. cxcr4a mutant zebrafish fail to form a vascular network, whereas ectopic expression of Cxcl12b ligand induces coronary vessel formation. Importantly, cxcr4a mutant zebrafish fail to undergo heart regeneration following injury. Our results suggest that chemokine-signaling has an essential role in coronary vessel formation by directing migration of endocardium-derived endothelial cells. Poorly developed vasculature in cxcr4a mutants likely underlies decreased regenerative potential in adults.
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