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[An immunosorbent for interferon purification]

M I Garipova, Iu B Monakov, I A Baschenko

    Voprosy Virusologii
    |May 1, 1993
    PubMed
    Summary
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    A novel polyvinyl alcohol (PVA) based sorbent effectively purifies leukocyte interferon, removing antigenic impurities without activity loss. This immunoaffinity chromatography method offers higher productivity and avoids allergenic contamination for biotechnological production.

    Area of Science:

    • Biotechnology
    • Biochemistry
    • Immunology

    Background:

    • Leukocyte interferon preparations often contain antigenic admixtures.
    • Immunoaffinity chromatography is a key purification technique for biological preparations.
    • Existing methods may have limitations in efficiency or introduce contaminants.

    Purpose of the Study:

    • To develop a novel affinity sorbent for efficient purification of leukocyte interferon.
    • To evaluate the performance of the new sorbent compared to existing materials.
    • To ensure the safety and suitability of the sorbent for large-scale production.

    Main Methods:

    • Development of an affinity sorbent using covalently linked polyvinyl alcohol (PVA).
    • Immobilization of antigen-specific rabbit globulin onto the activated PVA matrix.

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  • Immunoaffinity chromatography for the purification of leukocyte interferon preparations.

    • Main Results:

    • The PVA-based sorbent effectively eliminated antigenic admixtures from interferon preparations.
    • Purification efficiency was comparable to sepharose 4B based sorbents.
    • The new sorbent demonstrated at least 5 times higher process productivity.
    • The sorbent exhibited stability, resistance to detergents, and sterilizability.
    • No contamination with allergenic rabbit globulin was observed.

    Conclusions:

    • The developed PVA-based affinity sorbent is highly effective for purifying leukocyte interferon.
    • This method offers significant advantages in productivity and safety for biotechnological applications.
    • The sorbent's properties make it suitable for modern large-scale biopharmaceutical production.