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A unidirectional carrier effect.

Y Kohno, H Kawamura, J A Berzofsky

    Cellular Immunology
    |May 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    A novel unidirectional carrier effect was found in antibody responses. Myoglobin-ferritin conjugates facilitated T-cell help for B-cell antibody production in one direction only, unlike myoglobin-fowl gamma-globulin.

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    Area of Science:

    • Immunology
    • T-cell and B-cell interactions
    • Hapten-carrier systems

    Background:

    • Immune responses to haptens often require T-cell help.
    • T-cell help is typically bidirectional in hapten-carrier complexes.
    • Genetic factors (Ir genes) can influence immune responsiveness.

    Purpose of the Study:

    • To investigate the antibody response to a myoglobin-ferritin conjugate.
    • To determine if the conjugate could bypass Ir gene defects.
    • To characterize a potential unidirectional carrier effect.

    Main Methods:

    • Utilizing hapten-carrier complexes (myoglobin-ferritin and myoglobin-fowl gamma-globulin).
    • Assessing antibody production in low-responder mice.
    • Analyzing T-cell and B-cell interactions.

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    Main Results:

    • Myoglobin-ferritin conjugates induced a unidirectional carrier effect.
    • T-cell help was observed for anti-ferritin antibodies but not anti-myoglobin antibodies.
    • The conjugate did not bypass Ir gene defects for anti-myoglobin responses.
    • Myoglobin-fowl gamma-globulin bypassed the Ir gene defect.

    Conclusions:

    • A novel unidirectional carrier effect between two proteins was observed.
    • This phenomenon challenges existing models of T-cell-B-cell help.
    • The exact mechanism remains uncertain but is not attributed to bystander help or suppression.