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Related Experiment Video

Updated: Apr 14, 2026

Antibody Binding Specificity for Kappa (Vκ) Light Chain-containing Human (IgM) Antibodies: Polysialic Acid (PSA) Attached to NCAM as a Case Study
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[DNA aptamer based sorbents for binding human IgE].

V A Spiridonova, P A Levashov, E D Ovchinnikova

    Bioorganicheskaia Khimiia
    |April 22, 2015
    PubMed
    Summary

    DNA aptamers create effective sorbents for binding and removing human immunoglobulin E (IgE) from blood plasma. These reusable sorbents show stability and potential for medical and biotechnological applications.

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    Area of Science:

    • Biochemistry
    • Materials Science
    • Biotechnology

    Context:

    • Human immunoglobulin E (IgE) is a key mediator in allergic reactions and parasitic infections.
    • Efficient and selective methods for IgE removal are crucial for therapeutic and diagnostic applications.
    • Current methods for IgE depletion can be costly or lack specificity.

    Purpose:

    • To synthesize and characterize DNA aptamer-based sorbents for the selective capture of human IgE.
    • To evaluate the binding affinity and removal efficiency of these aptamers from human blood plasma.
    • To assess the stability, reusability, and regeneration conditions of the aptamer sorbents.

    Summary:

    • Novel DNA aptamer-based sorbents were successfully synthesized for the specific binding of human immunoglobulin E (IgE).
    • These sorbents demonstrated effective removal of IgE from human blood plasma, with desorption constants ranging from 1.1 x 10(-10) to 1.7 x 10(-10) M, dependent on aptamer orientation.
    • The developed chromatographic materials exhibited stability over multiple uses and established regeneration protocols, indicating their practical utility.

    Impact:

    • Provides a stable and reusable platform for IgE depletion, with potential applications in allergy treatment and diagnostics.
    • Offers a cost-effective and highly specific alternative to existing methods for IgE purification and removal.
    • Advances the development of aptamer-based affinity chromatography for biotechnological and clinical applications.