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    J Immunol. 2010 Mar 1;184(5):2243-6. Epub 2010 Feb 1.

    Cutting edge: priming of CD8 T cell immunity to herpes simplex virus type 1 requires cognate TLR3 expression in vivo.

    Davey GM, Wojtasiak M, Proietto AI, Carbone FR, Heath WR, Bedoui S.

    Source

    Department of Microbiology and Immunology, The University of Melbourne, Parkville, 3010, Victoria, Australia.

    Abstract

    Despite its potential for involvement in viral immunity, little evidence links TLR3 to adaptive antiviral responses. Here we show that TLR3 is required for the generation of CD8 T cell immunity to HSV-1. The magnitude of the gB-specific CD8 T cell response after flank infection by HSV-1 was significantly reduced in mice lacking TIR domain-containing adaptor-inducing IFN-beta or TLR3, but not MyD88. Impaired CTL induction was evident in chimeric mice lacking TLR3 in bone marrow (BM)-derived cells. Among the dendritic cell subsets, TLR3 was expressed by CD8alpha(+) dendritic cells, known to be involved in priming HSV-1-specific CD8 T cells. Use of mixed BM chimeras revealed that TLR3 and the MHC class I-restriction element must be expressed by the same BM-derived cell for effective priming. These data imply that a cognate linkage between TLR3 and MHC class I is required for efficient CTL priming to HSV-1.

    PMID:
    20124105
    [PubMed - indexed for MEDLINE]
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