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Related Experiment Videos

Human antigen-specific T hybridomas.

E C DeFreitas

    Behring Institute Mitteilungen
    |August 1, 1985
    PubMed
    Summary

    Researchers created antigen-specific hybridomas using Jurkat and T helper (TH) cell lines. These hybridomas effectively produce lymphokines, offering a new method for studying T cell functions and preparing materials for biochemical analysis.

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    Area of Science:

    • Immunology
    • Cell Biology
    • Biochemistry

    Background:

    • Hybridomas are crucial for monoclonal antibody production and studying immune responses.
    • T helper (TH) cells play a central role in adaptive immunity, regulating immune responses through lymphokine secretion.
    • Antigen-presenting cells (APCs) are essential for T cell activation and function.

    Purpose of the Study:

    • To develop a method for producing antigen-specific hybridomas from T helper cells.
    • To investigate the functionality of these hybridomas in producing lymphokines.
    • To establish a system for studying T cell functions without continuous restimulation.

    Main Methods:

    • Fusion of HGPRT-negative Jurkat cells with antigen-specific TH cell lines.
    • Selection of hybrid clones based on binding to antigen-pulsed monolayers.
    • Assessment of lymphokine production (IL-2, BCGF) upon antigenic stimulation with accessory cells (AC).
    • Comparison of EBV-transformed B cells and autologous monocytes as AC.

    Main Results:

    • Successful production of antigen-specific hybridomas.
    • Demonstration of functional lymphokine induction (IL-2, BCGF) by antigenic stimulation.
    • EBV-transformed B cells showed comparable AC function to monocytes.
    • Initial loss of specificity and function due to chromosome loss, recoverable by subcloning.
    • Maintained function for over a year after stabilization.

    Conclusions:

    • A novel methodology for generating stable, antigen-specific T cell hybridomas has been established.
    • EBV-transformed B cells can effectively replace monocytes as accessory cells for lymphokine induction.
    • This approach facilitates the study of T cell functions and lymphokine production, enabling large-scale material preparation for biochemical studies.

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