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Related Experiment Videos

Fluorescent probes to detect lymphocyte activation.

R C Nairn, J M Rolland

    Clinical and Experimental Immunology
    |January 1, 1980
    PubMed
    Summary

    Fluorescent probes track lymphocyte activation by monitoring changes in cell membranes and internal components. These advanced methods enable sensitive detection of immune responses to antigens and mitogens.

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    Area of Science:

    • Immunology
    • Cell Biology
    • Biochemistry

    Background:

    • Lymphocyte activation involves complex cellular events.
    • Monitoring these events is crucial for understanding immune responses.
    • Fluorescent probes offer a powerful tool for real-time cellular analysis.

    Purpose of the Study:

    • To review the application of fluorescent probes in studying lymphocyte activation.
    • To highlight how these probes reveal early and late activation events.
    • To discuss the integration of fluorescent probes with flow microfluorimetry.

    Main Methods:

    • Utilizing membrane-localizing probes (e.g., ANS, NPN, DPH, TMRITC) to detect conformational changes.
    • Employing intracellular probes (e.g., fluorescein) to assess cytoplasmic macromolecule alterations.
    • Using DNA-binding dyes (e.g., AO, ethidium bromide, Hoechst) to monitor DNA synthesis.
    • Adapting analyses for flow microfluorimetry for rapid and sensitive assays.

    Main Results:

    • Fluorescent probes reveal early conformational changes in lymphocyte membranes.
    • Intracellular probes track alterations in cytoplasmic macromolecules and metabolic activity.
    • Lysosomal and nuclear changes are detectable via specific fluorescent probes (e.g., AO staining).
    • Increased DNA synthesis in activated lymphocytes is readily visualized.

    Conclusions:

    • Fluorescent probes provide comprehensive insights into lymphocyte activation dynamics.
    • Flow microfluorimetry enhances the sensitivity and speed of these analyses.
    • These methods facilitate routine detection of lymphocyte responses and antigen identification.

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