PUBLICATION

Endothelial cilia mediate low flow sensing during zebrafish vascular development

Authors
Goetz, J.G., Steed, E., Ferreira, R.R., Roth, S., Ramspacher, C., Boselli, F., Charvin, G., Liebling, M., Wyart, C., Schwab, Y., Vermot, J.
ID
ZDB-PUB-140513-484
Date
2014
Source
Cell Reports   6: 799-808 (Journal)
Registered Authors
Liebling, Michael, Vermot, Julien, Wyart, Claire
Keywords
none
MeSH Terms
  • Animals
  • Cardiovascular System/embryology*
  • Cells, Cultured
  • Cilia/physiology
  • Embryo, Nonmammalian/blood supply
  • Embryonic Development
  • Endothelial Cells/cytology
  • Endothelial Cells/ultrastructure
  • Neovascularization, Physiologic
  • Zebrafish/embryology*
PubMed
24561257 Full text @ Cell Rep.
Abstract
The pattern of blood flow has long been thought to play a significant role in vascular morphogenesis, yet the flow-sensing mechanism that is involved at early embryonic stages, when flow forces are low, remains unclear. It has been proposed that endothelial cells use primary cilia to sense flow, but this has never been tested in vivo. Here we show, by noninvasive, high-resolution imaging of live zebrafish embryos, that endothelial cilia progressively deflect at the onset of blood flow and that the deflection angle correlates with calcium levels in endothelial cells. We demonstrate that alterations in shear stress, ciliogenesis, or expression of the calcium channel PKD2 impair the endothelial calcium level and both increase and perturb vascular morphogenesis. Altogether, these results demonstrate that endothelial cilia constitute a highly sensitive structure that permits the detection of low shear forces during vascular morphogenesis.
Genes / Markers
Figures
Expression
Phenotype
Mutation and Transgenics
Human Disease / Model Data
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping
Errata and Notes