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Related Experiment Videos

New parental cell lines for generating human hybridomas.

T Hundhausen1, R Laus, W Müller-Ruchholtz

  • 1Department of Immunology, University of Kiel, Germany.

Journal of Immunological Methods
|August 30, 1992
PubMed
Summary

Creating human hybridomas is challenging due to a lack of suitable cell lines. This study establishes HGPRT/TK-deficient human parent cell lines, enabling efficient human hybridoma production for T lymphocyte research.

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Area of Science:

  • Immunology
  • Cell Biology
  • Biotechnology

Background:

  • Producing human hybridomas is difficult compared to mouse hybridomas, primarily due to the absence of suitable malignant human cell lines.
  • Hybridoma technology is crucial for monoclonal antibody production and studying cell function.

Purpose of the Study:

  • To establish human parent cell lines deficient in hypoxanthine guanosine phosphoribosyl transferase (HGPRT) and/or thymidine kinase (TK) for human hybridoma production.
  • To evaluate selection strategies and media for efficient isolation of true human hybridomas.
  • To explore the potential of these cell lines for generating human T-T hybridomas for T lymphocyte research.

Main Methods:

  • Engineered leukemic cell lines (REH, 1301, SKW-3) to be deficient in HGPRT and/or TK.

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  • Developed and utilized novel selection media, including hypoxanthine/aminopterine/thymidine/azaserine (HATA) and azaserine/hypoxanthine (AH).
  • Assessed the efficiency of selection procedures for eliminating enzyme-deficient parent cells and isolating hybridomas.
  • Characterized generated human T-T hybridomas for karyotype and surface antigen expression.

    • Main Results:

    • Successfully established three human parent cell lines with specific enzyme deficiencies (HGPRT and/or TK).
    • Demonstrated that combined HGPRT and TK deficiencies, coupled with HATA medium, significantly improved hybridoma selection.
    • Identified the thymidine-free AH medium as having low nonspecific toxicity.
    • Showcased a subclone of the SKW-3 cell line's exceptional ability to generate stable, nearly tetraploid human T-T hybridomas expressing new surface antigens.

    Conclusions:

    • The developed HGPRT/TK-deficient human cell lines and selection strategies overcome previous limitations in human hybridoma production.
    • The new hybridoma technology provides a powerful tool for investigating human T lymphocyte function.
    • This advancement opens new avenues for research in immunology and related fields.