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    Blood. 2006 Mar 1;107(5):2030-6. Epub 2005 Nov 22.

    Expression of the DNAM-1 ligands, Nectin-2 (CD112) and poliovirus receptor (CD155), on dendritic cells: relevance for natural killer-dendritic cell interaction.

    Pende D, Castriconi R, Romagnani P, Spaggiari GM, Marcenaro S, Dondero A, Lazzeri E, Lasagni L, Martini S, Rivera P, Capobianco A, Moretta L, Moretta A, Bottino C.

    Source

    Istituto Nazionale per la Ricerca sul Cancro, L.go R. Benzi 10, 16132 Genova, Italy. daniela.pende@istge.it

    Abstract

    In this study, we demonstrate the involvement of DNAM-1-triggering receptor and its ligands, poliovirus receptor (PVR) and Nectin-2, in natural killer (NK) cell-mediated lysis of dendritic cells (DCs). The surface expression of both ligands was up-regulated in DCs as compared to monocytes. It reached maximal densities after DC maturation induced by different stimuli including lipopolysaccharide (LPS), poly I:C, flagellin, and CD40L. Both immunohistochemical analysis and confocal microscopy revealed expression of DNAM-1 ligands by DCs in lymph nodes in which they were localized in the parafollicular T-cell region and surrounded the high endothelial venules. Remarkably, in cytolytic assays, DNAM-1 cooperated with NKp30 in the NK-mediated killing of both immature and mature DCs and the degree of contribution of DNAM-1 appeared to correlate with the surface densities of its specific ligands PVR and Nectin-2.

    PMID:
    16304049
    [PubMed - indexed for MEDLINE]
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