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Related Experiment Videos

Construction of human T-cell hybrids with helper function.

O Irigoyen, P V Rizzolo, Y Thomas

    Advances in Experimental Medicine and Biology
    |January 1, 1984
    PubMed
    Summary

    Researchers created human T-cell hybrids with helper activity by fusing normal T cells with a mutant T-cell line. Early cloning stabilized their function, yielding valuable tools for studying T lymphocyte immunobiology.

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    Area of Science:

    • Immunology
    • Cell Biology
    • Hybridoma Technology

    Background:

    • Human T lymphocytes play a crucial role in immune responses, including mediating helper functions.
    • Developing stable in vitro models of human T cells is essential for dissecting complex immune mechanisms.
    • Somatic cell hybridization offers a method to immortalize and study specific T cell functions.

    Purpose of the Study:

    • To generate human T-cell hybrids exhibiting helper activity.
    • To investigate the stability of helper function in these hybrid cells.
    • To establish a tool for further research into human T lymphocyte immunobiology.

    Main Methods:

    • Fusion of phytohemagglutinin-activated normal human T cells with a drug-selected mutant T-cell line (CEM-T15).

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  • Selection of hybrids using the OKT3 cell surface marker, present on normal T cells but absent in CEM-T15.
  • Assay of hybrid cell capacity to promote pokeweed mitogen-induced antibody production by B cells.

    • Main Results:

    • Successfully generated human T-cell hybrids demonstrating significant helper activity.
    • Uncloned hybrids showed functional instability, losing helper activity over time.
    • Early and repeated cloning of hybrids resulted in stable clones retaining helper activity for over 8 months.

    Conclusions:

    • Human T-cell hybrids can be effectively generated to possess and maintain helper functions.
    • Early cloning is critical for stabilizing the functional activity of these hybrid cells.
    • These stable human T-cell hybrids represent valuable tools for investigating T cell-mediated immunity.