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Affinity chromatography: a tool for enzyme immunoassay

B Terouanne, J C Nicolas, B Descomps

    Journal of Immunological Methods
    |January 1, 1980
    PubMed
    Summary
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    Affinity chromatography offers a faster method for enzyme immunoassays by rapidly separating bound conjugates. This technique simplifies enzyme immunoassays, reducing necessary washing and centrifugation steps for improved automation.

    Area of Science:

    • Biochemistry
    • Immunology
    • Analytical Chemistry

    Background:

    • Affinity chromatography is a standard technique for enzyme purification and creating antigen-enzyme conjugates.
    • Current enzyme immunoassays often rely on immunoadsorbents, necessitating complex automation steps like centrifugation and washing.

    Purpose of the Study:

    • To introduce affinity chromatography as a method for rapid separation in enzyme immunoassays.
    • To demonstrate the application of this technique in developing efficient enzyme immunoassays.

    Main Methods:

    • Utilizing affinity chromatography for the separation of antigen-enzyme conjugates bound to antibodies from free conjugates.
    • Developing enzyme immunoassays for human placental lactogen and progesterone using delta 5,3-ketosteroid isomerase as a marker.

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  • Employing specific absorbents to retain unbound enzyme conjugates.

    • Main Results:

    • Affinity chromatography enables rapid separation of enzyme conjugates in immunoassays.
    • The proposed method simplifies the assay procedure by minimizing manual steps.
    • Successful application in enzyme immunoassays for specific biomarkers was demonstrated.

    Conclusions:

    • Affinity chromatography provides a streamlined approach for enzyme immunoassays.
    • This method enhances automation potential by reducing the need for centrifugation and washing.
    • The technique is effective for the detection of human placental lactogen and progesterone.