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Related Experiment Videos

Surface antigen changes during B-lymphocyte activation in primates.

N L Letvin, W R Aldrich, D A Thorley-Lawson

    Cellular Immunology
    |March 1, 1984
    PubMed
    Summary
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    Researchers identified conserved B-cell antigens across primate species. Activated human B lymphocytes express the B2 antigen only, a finding with potential diagnostic value in certain pathologies.

    Area of Science:

    • Immunology
    • Primate B-cell biology
    • Cellular immunology

    Background:

    • B-cell-specific surface antigens are crucial for lymphocyte function and identification.
    • Understanding B-cell activation and differentiation is key to comprehending immune responses.
    • Conserved markers across species can offer insights into fundamental biological processes.

    Purpose of the Study:

    • To investigate the conservation of B-cell surface antigens in phylogenetically distant primate species.
    • To characterize the expression patterns of B-cell antigens on simian B lymphocytes.
    • To explore the implications of these findings for human B-cell physiology and pathology.

    Main Methods:

    • Analysis of B-cell-specific surface antigen conservation in lymphocytes from various primate species.

    Related Experiment Videos

  • Characterization of antigen expression on the surface of simian B lymphocytes.
  • In vitro lectin stimulation and in situ antigen stimulation of human B lymphocytes.

    • Main Results:

    • B-cell-specific surface antigens are conserved across phylogenetically distant primate species.
    • Lectin or antigen stimulation induces human B lymphocytes to express the B2 antigen exclusively (B2 only).
    • An activated B cell expressing only the B2 antigen was observed in the peripheral blood of monkeys under pathologic conditions.

    Conclusions:

    • The "B2 only" cell represents an activated B lymphocyte.
    • This activated B cell phenotype has significant implications for understanding human B-cell physiology.
    • The presence of "B2 only" cells may serve as a valuable diagnostic marker for pathologic processes.