4.8 Article

Non-canonical Wnt signalling modulates the endothelial shear stress flow sensor in vascular remodelling

期刊

ELIFE
卷 5, 期 -, 页码 -

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ELIFE SCIENCES PUBLICATIONS LTD
DOI: 10.7554/eLife.07727

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资金

  1. Cancer Research UK
  2. Fundacao para a Ciencia e Tecnologia [EXPL/BEX-BCM/2258/2013]
  3. Fonseca Fundacao para a Ciencia e a Tecnologia [LISBOA-01-0145-FEDER-007391]
  4. European Commission - Marie Curie Actions [255150]
  5. Fundacao para a Ciencia e a Tecnologia [IF/00412/2012]
  6. UKCOMES [EP/L00030X/1]
  7. European Commission - FP7 Projects [287703, 261507]
  8. Engineering and Physical Sciences Research Council [EP/I017909/1, EP/I034602/1]
  9. Lister Institute of Preventive Medicine
  10. Leducq Transatlantic Network Artemis
  11. EMBO Young Investigator Program
  12. European Research Council [REshape 311719]
  13. BIRAX - Regenerative Medicine Initiative
  14. Cancer Research UK [17351] Funding Source: researchfish
  15. Engineering and Physical Sciences Research Council [EP/I017909/1, EP/I034602/1, EP/L00030X/1] Funding Source: researchfish
  16. EPSRC [EP/L00030X/1, EP/I017909/1, EP/I034602/1] Funding Source: UKRI

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Endothelial cells respond to molecular and physical forces in development and vascular homeostasis. Deregulation of endothelial responses to flow-induced shear is believed to contribute to many aspects of cardiovascular diseases including atherosclerosis. However, how molecular signals and shear-mediated physical forces integrate to regulate vascular patterning is poorly understood. Here we show that endothelial non-canonical Wnt signalling regulates endothelial sensitivity to shear forces. Loss of Wnt5a/Wnt11 renders endothelial cells more sensitive to shear, resulting in axial polarization and migration against flow at lower shear levels. Integration of flow modelling and polarity analysis in entire vascular networks demonstrates that polarization against flow is achieved differentially in artery, vein, capillaries and the primitive sprouting front. Collectively our data suggest that non-canonical Wnt signalling stabilizes forming vascular networks by reducing endothelial shear sensitivity, thus keeping vessels open under low flow conditions that prevail in the primitive plexus.

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