Dalotuzumab

Definition 1

A recombinant humanized monoclonal antibody directed against the insulin-like growth factor 1 receptor (IGF1R) with potential antineoplastic activity. Dalotuzumab binds to membrane-bound IGF1R, preventing binding of the ligand IGF1 and the subsequent triggering of the PI3K/Akt signaling pathway; inhibition of this survival signaling pathway may result in the inhibition of tumor cell proliferation and the induction of tumor cell apoptosis. The activation of IGF1R, a tyrosine kinase and a member of the insulin receptor family, stimulates cell proliferation, enables oncogenic transformation, and suppresses apoptosis; IGF1R signaling has been highly implicated in tumorigenesis and metastasis. (NCI Thesaurus)

Definition 2

A substance being studied in the treatment of many types of cancer. MK-0646 binds to a protein called insulin-like growth factor receptor (IGFR) on the surface of cells. This may prevent the cells from growing when IGF is present. It may also kill cancer cells. MK-0646 is a type of monoclonal antibody. (NCI Dictionary)

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