anatumomab mafenatox   Click here for help

GtoPdb Ligand ID: 9947

Synonyms: 5T4FabV13SEAD227A | ABR 214936 | ABR-214936 | ABR214936 | pMB125 | PNU 214936 | PNU-214936 | PNU214936 | TTS-CD2
Immunopharmacology Ligand
Compound class: Antibody
Comment: Anatumomab mafenatox (ABR-214936) is a fusion protein containing an engineered 5T4 Fab moiety fused via the C terminus of the heavy chain to a mutated form of the Staphylococcal enterotoxin A (SEA) superantigen [1]. SEA is secreted by the pathogen and it stimulates a massive MHC class II-T cell receptor-mediated polyclonal T cell activation, which results in the release of large amounts of cytotoxic and proinflammatory cytokines. Anatumomab mafenatox targets the destructive power of SEA to 5T4-expressing tumour cells. The Asp227Ala mutation is the SEA moiety is designed to reduce MHC class II binding affinity so as to reduce killing of MHC class II positive cells.
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Selectivity at other protein targets
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Target Sp. Type Action Value Parameter Concentration range (M) Reference
trophoblast glycoprotein Primary target of this compound Hs Antibody Binding 8.9 pKd - 1
pKd 8.9 (Kd 1.2x10-9 M) [1]
Description: Binding affinity for 5T4 expressed on human Calu-1 lung cancer cells.