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Delta-like ligand 4 (DLL4), also know as Delta-4, is a homologue of the Drosophila delta protein, and functions as a transmembrane bound ligand to the notch receptor Notch1. DLL4 is expressed in the vasculature and plays a critical role in vascular development. It is induced by vascular endothelial growth factor (VEGF), as a negative feedback regulator to regulate angiogenic sprouting and promote the formulation of a differentiated vascular network. DLL4 has been found to be strongly expressed in tumor vessels of clear-cell renal tumors and bladder cancer, and inhibition of DLL4 results in increased vascular proliferation but defective maturation. This in turn leads to a decrease in tumor growth, with no apparent toxicity.
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Protein Aliases: delta 4; delta ligand 4; delta-like 4 homolog; delta-like 4 protein; Delta-like protein 4; Delta4; Drosophila Delta homolog 4; MGC126344; notch ligand delta-2; notch ligand DLL4
Gene Aliases: AOS6; Delta4; DLL4; hdelta2; UNQ1895/PRO4341
UniProt ID: (Human) Q9NR61, (Mouse) Q9JI71
Entrez Gene ID: (Human) 54567, (Mouse) 54485
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