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[Decrease in the number of SE-rosettes by means of sera containing immune complexes].

I Lohrisch, J Schaller, H Sauer

    Allergie Und Immunologie
    |January 1, 1982
    PubMed
    Summary
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    Immune complexes reversibly bind to T cells, decreasing their ability to form sheep erythrocyte rosettes. This effect is temporary, as T cell rosette formation can be restored in an immune complex-free environment.

    Area of Science:

    • Immunology
    • Cellular immunology

    Context:

    • Peripheral blood lymphocytes (PBL) play a crucial role in immune responses.
    • Sheep erythrocyte (SE) rosetting is a method to identify T lymphocytes.
    • Immune complexes (IC) are implicated in various immune and autoimmune conditions.

    Purpose:

    • To investigate the effect of immune complexes on the T cell rosetting ability with sheep erythrocytes.
    • To understand the mechanism behind the interaction between immune complexes and T cells.

    Summary:

    • Preincubation of PBL with sera containing IC or with prepared antigen-antibody complexes significantly reduced SE-rosette formation.
    • This reduction in rosetting ability was fully reversible upon incubation in an IC-free medium.
    • IC and antigen-antibody complexes bind reversibly to T cells via Fc-receptors, causing steric hindrance to T cell receptors for SE.

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    Impact:

    • This study elucidates a mechanism by which immune complexes can modulate T cell function.
    • Understanding this reversible interaction is crucial for comprehending immune complex-mediated pathologies.
    • Provides insights into the dynamic interplay between immune complexes and T cell surface receptors.