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A new, simplified assay for suppressor cell function.

R S Panush

    Journal of Clinical & Laboratory Immunology
    |October 1, 1982
    PubMed
    Summary
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    A new assay using cultured IM9 cells simplifies the assessment of suppressor cell function. This method is sensitive, cost-effective, and applicable to various immune cell types, aiding research in immune-related diseases.

    Area of Science:

    • Immunology
    • Cell Biology
    • Assay Development

    Background:

    • Suppressor cell function is critical in immune regulation.
    • Assessing suppressor cells can be complex and resource-intensive.
    • Dysfunctional suppressor cells are implicated in rheumatic and atopic diseases.

    Purpose of the Study:

    • To develop a simplified and sensitive assay for examining suppressor cell function.
    • To utilize standardized lymphoblastoid cells as responders.
    • To facilitate the study of suppressor cells in various disease contexts.

    Main Methods:

    • A novel assay employing cultured human lymphoblastoid (IM9) cells as responders.
    • Suppressor cells were treated with mitomycin C and concanavalin A.
    • Suppression was quantified by measuring responder 3H-thymidine uptake compared to controls.

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    Main Results:

    • The assay is simple, time-saving, and conserves reagents and cells.
    • It effectively uses standardized, available responder cells (IM9).
    • The method is suitable for detecting various types of suppressor cells, including spontaneous and induced ones.

    Conclusions:

    • The developed assay provides a simplified and sensitive method for evaluating suppressor cell function.
    • IM9 cells are effective responders for this assay, applicable to normal individuals and patients with immune-related diseases.
    • This assay overcomes limitations of previous methods, reducing the need for extensive blood donations and complex culture conditions.