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Substance Name: OMP-305B83
ID: S900006890


  • NCI: anti-DLL4/VEGF bispecific monoclonal antibody OMP-305B83
    A bispecific monoclonal antibody directed against both the Notch ligand delta-like 4 (DLL4) and the human tyrosine kinase vascular endothelial growth factor (VEGF), with potential anti-angiogenic and antineoplastic activities. The anti-DLL4 moiety of anti-DLL4/VEGF monoclonal antibody OMP-305B83 specifically binds to DLL4, prevents its interaction with Notch receptors, and inhibits Notch-mediated signaling and gene transcription, which may both block tumor angiogenesis and inhibit tumor cell growth. The anti-VEGF moiety binds to VEGF and prevents the binding of VEGF to its receptor, which blocks VEGF-mediated signaling and further inhibits the growth and maintenance of tumor blood vessels. The expression of DLL4 is highly restricted to the vascular endothelium; DLL4/Notch signaling is required for the development of functional tumor blood vessels. The expression of the pro-angiogenic growth factor VEGF is associated with tumor angiogenesis and tumor cell proliferation and invasion. (NCI Thesaurus)
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Names and Synonyms

  • OMP 305B83
  • OMP-305B83
  • OMP305B83

Registry Number

  • S900006890