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Related Experiment Videos

Monoclonal antibody binding to factor VIII:c.

J W Bloom, G Mitra

    Thrombosis Research
    |October 15, 1986
    PubMed
    Summary

    The study quantified interactions between human blood clotting Factor VIII:c and monoclonal antibodies BD10 and C7F7 using ELISA. Antibody C7F7 demonstrated significantly higher binding affinity to Factor VIII:c than BD10.

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    Area of Science:

    • Biochemistry
    • Immunology
    • Hematology

    Background:

    • Factor VIII:c is crucial for blood coagulation.
    • Monoclonal antibodies are vital tools in diagnostics and therapeutics.
    • Understanding antibody-epitope interactions is key for developing targeted treatments.

    Purpose of the Study:

    • To quantitatively assess the binding interactions between human blood clotting Factor VIII:c and two monoclonal antibodies, C7F7 and BD10.
    • To determine the affinity, valence, and heterogeneity of these interactions using a Scatchard-Sips plot analysis.

    Main Methods:

    • Enzyme-linked immunosorbent assay (ELISA) was employed to study antibody-antigen interactions.
    • Factor VIII:c was coated onto the ELISA plate for antibody binding assays.
    • Scatchard-Sips plot analysis was utilized for quantitative determination of binding constants.

    Main Results:

    • Monoclonal antibody C7F7 exhibited a high affinity constant (Ko) of 2.3 X 10(11) M-1.
    • Monoclonal antibody BD10 showed a lower affinity constant (Ko) of 5.48 X 10(8) M-1.
    • Both antibodies displayed heterogeneity in their binding interactions, indicated by the heterogeneity index (a).

    Conclusions:

    • Antibody C7F7 demonstrates a significantly stronger binding affinity to Factor VIII:c compared to antibody BD10.
    • The quantitative data provides insights into the specific interactions relevant for diagnostic and therapeutic applications.
    • These findings contribute to the understanding of antibody-antigen dynamics in the context of hemostasis.

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