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PMID:17251261

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Citation

Leslie, JD, Ariza-McNaughton, L, Bermange, AL, McAdow, R, Johnson, SL and Lewis, J (2007) Endothelial signalling by the Notch ligand Delta-like 4 restricts angiogenesis. Development 134:839-44

Abstract

Notch signalling by the ligand Delta-like 4 (Dll4) is essential for normal vascular remodelling, yet the precise way in which the pathway influences the behaviour of endothelial cells remains a mystery. Using the embryonic zebrafish, we show that, when Dll4-Notch signalling is defective, endothelial cells continue to migrate and proliferate when they should normally stop these processes. Artificial overactivation of the Notch pathway has opposite consequences. When vascular endothelial growth factor (Vegf) signalling and Dll4-Notch signalling are both blocked, the endothelial cells remain quiescent. Thus, Dll4-Notch signalling acts as an angiogenic ;off' switch by making endothelial cells unresponsive to Vegf.

Links

PubMed Online version:10.1242/dev.003244

Keywords

Animals; Cell Movement; Cell Proliferation; Endothelial Cells/physiology; Endothelium, Vascular/embryology; Endothelium, Vascular/physiology; Intracellular Signaling Peptides and Proteins; Membrane Proteins/physiology; Neovascularization, Physiologic; Receptors, Notch/physiology; Signal Transduction; Vascular Endothelial Growth Factor A/physiology; Zebrafish/embryology; Zebrafish/physiology; Zebrafish Proteins/physiology

Significance

Annotations

Gene product Qualifier GO ID GO term name Evidence Code with/from Aspect Notes Status


See also

References

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