Journal
ANGIOGENESIS
Volume 11, Issue 1, Pages 41-51Publisher
SPRINGER
DOI: 10.1007/s10456-008-9098-0
Keywords
angiogenesis; notch
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Funding
- Cancer Research UK Funding Source: Medline
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The notch-signalling pathway regulates cell fate and differentiation through cell-cell communication. In recent years, several in vitro and in vivo studies have demonstrated that notch-signalling functions as a negative feedback mechanism downstream of the VEGF-signalling pathway that acts to finely shape the vascular network. Notch activation by the Jagged-1 and Delta-like 4 ligands regulates different steps of blood vessel development ranging from proliferation and survival of endothelial cells, to vessel branching and arterial-venous differentiation. In addition, heterotypic notch signalling from endothelial cells to pericytes is critical for vessel stabilization and maturation. Interestingly, several studies have demonstrated that blocking the notch pathway can delay tumour growth. Unexpectedly however, tumour growth inhibition by Notch was caused by an increased number of nonfunctional vessels, which resulted in poor tumour perfusion. This approach of modulating notch signalling, combined with the extended knowledge acquired on the basic vascular role of notch signalling, will aid the development of treatments targetting human pathologies such as tissue ischaemia and solid tumour formation.
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