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Related Experiment Videos

A rapid quantitative assay for lymphotoxin.

M E Smith, R Laudico, B W Papermaster

    Journal of Immunological Methods
    |January 1, 1977
    PubMed
    Summary
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    A new rapid assay quantifies lymphotoxin using L1210 lymphoid cells. This method aligns with fibroblast-based assays, offering reliable results for lymphotoxin activity measurement.

    Area of Science:

    • Immunology
    • Cell Biology
    • Biochemistry

    Background:

    • Lymphotoxin (LT) is a crucial cytokine involved in immune responses.
    • Accurate quantification of lymphotoxin is essential for research and diagnostics.
    • Existing assays may lack speed or require specific cell types.

    Purpose of the Study:

    • To develop a rapid and quantitative assay for lymphotoxin.
    • To validate the use of a mouse cultured lymphoid cell line (L1210) as a target cell.
    • To compare the performance of the new assay with traditional fibroblast-based methods.

    Main Methods:

    • Utilized the L1210 mouse lymphoid cell line as target cells for lymphotoxin detection.
    • Employed [3H]thymidine labeling of target cells post-incubation with lymphotoxin samples.

    Related Experiment Videos

  • Harvested labeled cells using the Multiple Automated Sample Harvester (MASH) for high-throughput processing.
  • Calculated I50 (50% inhibition) and lymphotoxin specific activities using probit analysis for statistical reliability.

    • Main Results:

    • The developed assay demonstrated substantial agreement with fibroblast-based lymphotoxin assays.
    • The use of MASH enabled efficient processing of multiple replicates, enhancing statistical power.
    • Probit transformation and analysis provided high statistical reliability for calculated lymphotoxin activity.

    Conclusions:

    • A rapid, quantitative lymphotoxin assay using L1210 cells is effective and reliable.
    • This assay offers a viable alternative to fibroblast-based methods, potentially improving efficiency.
    • The methodology supports accurate measurement of lymphotoxin activity in biological samples.