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    J Exp Med. 1991 Feb 1;173(2):487-9.

    Efficient and selective presentation of antigen-antibody complexes by rheumatoid factor B cells.

    Source

    Basel Institute for Immunology, Switzerland.

    Abstract

    Using Epstein-Barr virus B cell clones and antigen-specific T cell clones, we asked how antigen-antibody complexes are handled by B cells. We found that the only B cells capable of efficient presentation of antigen-antibody complexes are those that bind the complexes via membrane immunoglobulin, i.e., rheumatoid factor-producing B cells and, to a lower extent, antigen-specific B cells. On the contrary, nonspecific B cells, although capable of binding antigen-antibody complexes, fail to present them to T cells. Thus, rheumatoid factor B cells can present any antigen in the context of an immune complex and be triggered by T cells specific for a variety of foreign antigens. These results demonstrate a mechanism of intermolecular help that may be responsible for the production of rheumatoid factor and possibly of other types of autoantibodies.

    PMID:
    1703209
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC2118796
    Free PMC Article

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