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  • Title: Monoclonal antibodies to human FVIIIR:Ag and FVIIIC.
    Author: Francis SE, Joshua DE, Exner T, Kronenberg H.
    Journal: Pathology; 1985 Oct; 17(4):579-85. PubMed ID: 2419825.
    Abstract:
    A series of monoclonal antibodies have been produced which recognize different epitopes of the factor VIII molecule. The antibodies were raised in mice against high purity factor VIII (FVIII) and the mouse spleens used in cell fusion experiments. Following cell fusion the hybridoma supernatants were used for screening with a solid phase radioimmunoassay (RIA) technique. The antibodies detected were differentiated by their degree of attachment to 2 components of the FVIII molecule, FVIII related antigen (FVIIIR:Ag) (also called von Willebrand's Factor) and FVIII coagulant (FVIIIC). Immunofluorescence and immunoperoxidase studies both showed the FVIIIR:Ag antibodies to be localized to the endothelial cells of the blood vessel walls. They can, therefore, be used for histological identification of these cells on cryostat and paraffin sections. The anti-FVIIIR:Ag antibodies have no anticoagulant properties, whereas the anti-FVIIIC antibody reacts as an instant inhibitor with a strength of 35,000 new Oxford U/ml. These antibodies are stable reagents and suitable for radioimmunoassay for both FVIIIR:Ag and FVIIIC.
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