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    J Immunol. 2010 Nov 15;185(10):6138-45. Epub 2010 Oct 6.

    A nonredundant role for IL-21 receptor signaling in plasma cell differentiation and protective type 2 immunity against gastrointestinal helminth infection.

    King IL, Mohrs K, Mohrs M.

    Source

    Trudeau Institute, Saranac Lake, NY 12983, USA.

    Abstract

    Pathogen-specific Ab production following infection with the gut-dwelling roundworm Heligmosomoides polygyrus is critical for protective immunity against reinfection. However, the factors required for productive T cell-B cell interactions in the context of a type 2-dominated immune response are not well defined. In the present study, we identify IL-21R signaling as a critical factor in driving pathogen-specific plasma cell differentiation and protective immunity against H. polygyrus in mice. We show that B cells require direct IL-21R signals to differentiate into CD138(+) plasma cells. In contrast, IL-21R signaling is dispensable for germinal center formation, isotype class switching, and Th2 and T follicular helper cell differentiation. Our studies demonstrate a selective role for IL-21 in plasma cell differentiation in the context of protective antiparasitic type 2 immunity.

    PMID:
    20926797
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC3065293
    Free PMC Article

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