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Recombinant Tumor Necrosis Factor-Alpha
Definition 1
A recombinant therapeutic agent which is chemically identical to or similar to the endogenous cytokine tumor necrosis factor-alpha with antineoplastic properties. Tumor necrosis factor-alpha binds to and activates "death receptors" on the cell surface, resulting in apoptosis and cell death by the p53-independent extrinsic pathway. This agent also disrupts tumor vascularization. (NCI Thesaurus)
Definition 2
Serum glycoprotein produced by activated macrophages and other mammalian mononuclear leukocytes. It has necrotizing activity against tumor cell lines and increases ability to reject tumor transplants. Also known as TNF-alpha, it is only 30% homologous to TNF-beta (LYMPHOTOXIN), but they share two receptors. (NLM, Medical Subject Headings)
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