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Related Experiment Videos

A shared antigenic determinant between human B lymphocytes and carcinomas (BLCa).

K H Chan, T C Yip, W L Ng

    International Journal of Cancer
    |September 15, 1985
    PubMed
    Summary

    Researchers developed a monoclonal antibody (MA6) targeting a novel B-cell antigen (BLCa). This antibody shows promise for identifying B-cell malignancies and nasopharyngeal carcinoma cells.

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    Area of Science:

    • Immunology
    • Oncology
    • Cell Biology

    Background:

    • Monoclonal antibodies are crucial tools in cancer research and diagnostics.
    • Identifying specific cell surface antigens can aid in understanding cell differentiation and disease states.

    Purpose of the Study:

    • To develop and characterize a novel murine IgM monoclonal antibody (MA6).
    • To identify the antigen (BLCa) recognized by MA6 and its expression patterns on lymphoid and non-lymphoid cells.

    Main Methods:

    • Immunization of mice with an antigen immunoprecipitate from NPC patient serum and Raji cell extract.
    • Characterization of antibody reactivity using various human lymphoid cell lines, peripheral blood lymphocytes, and tissue sections.
    • Testing antibody specificity against non-lymphoid cell lines and carcinoma tissues.

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    Main Results:

    • MA6 targets a B-cell antigen (BLCa) present across all B-cell differentiation stages, distinct from known B-cell markers.
    • BLCa is expressed on most Burkitt lymphoma cell lines and a subset of peripheral blood B lymphocytes.
    • MA6 did not react with T-lymphocyte, myeloid, or epithelial cells but stained tumor cells from various carcinomas, including nasopharyngeal carcinoma.

    Conclusions:

    • MA6 recognizes a novel antigen (BLCa) broadly expressed on human B lymphoid cells.
    • The antigen's presence on B-cells and carcinoma cells suggests potential diagnostic and therapeutic applications in B-cell malignancies and cancers like nasopharyngeal carcinoma.