title: Unique functions of CD11b+, CD8 alpha+, and double-negative Peyer's patch dendritic cells.
abstract: We have recently demonstrated the presence of three populations of dendritic cells (DC) in the murine Peyer's patch. CD11b(+)/CD8alpha(-) (myeloid) DCs are localized in the subepithelial dome, CD11b(-)/CD8alpha(+) (lymphoid) DCs in the interfollicular regions, and CD11b(-)/CD8alpha(-) (double-negative; DN) DCs at both sites. We now describe the presence of a novel population of intraepithelial DN DCs within the follicle-associated epithelium and demonstrate a predominance of DN DCs only in mucosal lymphoid tissues. Furthermore, we demonstrate that all DC subpopulations maintain their surface phenotype upon maturation in vitro, and secrete a distinct pattern of cytokines upon exposure to T cell and microbial stimuli. Only myeloid DCs from the PP produce high levels of IL-10 upon stimulation with soluble CD40 ligand(-) trimer, or Staphylococcus aureus and IFN-gamma. In contrast, lymphoid and DN, but not myeloid DCs, produce IL-12p70 following microbial stimulation, whereas no DC subset produces IL-12p70 in response to CD40 ligand trimer. Finally, we show that myeloid DCs from the PP are particularly capable of priming naive T cells to secrete high levels of IL-4 and IL-10, when compared with those from nonmucosal sites, while lymphoid and DN DCs from all tissues prime for IFN-gamma production. These findings thus suggest that DC subsets within mucosal tissues have unique immune inductive capacities.
authors: Immune Cell Interaction Unit, Mucosal Immunity Section, Laboratory of Clinical Investigation, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
authors: A
authors: A
authors: Iwasaki
authors: B L
authors: BL
authors: Kelsall
mesh_terms: D000818:Animals; D015703:Antigens, CD / Q000096:biosynthesis; D018122:B7-1 Antigen / Q000096:biosynthesis; D051940:B7-2 Antigen; D016827:CD8 Antigens / Q000096:biosynthesis*; D019070:Cell Lineage / Q000276:immunology; D002469:Cell Separation; D003713:Dendritic Cells / Q000276:immunology* / Q000378:metabolism; D004847:Epithelial Cells / Q000276:immunology; D018984:Epitopes, T-Lymphocyte / Q000276:immunology; D005260:Female; D000949:Histocompatibility Antigens Class II / Q000096:biosynthesis; D016130:Immunophenotyping; D007371:Interferon-gamma / Q000378:metabolism; D016753:Interleukin-10 / Q000096:biosynthesis / Q000378:metabolism; D018664:Interleukin-12 / Q000096:biosynthesis; D015847:Interleukin-4 / Q000096:biosynthesis / Q000378:metabolism; D037181:Lectins, C-Type; D008213:Lymphocyte Activation; D016131:Lymphocyte Subsets / Q000276:immunology* / Q000378:metabolism; D016177:Macrophage-1 Antigen / Q000096:biosynthesis*; D008562:Membrane Glycoproteins / Q000096:biosynthesis; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D008822:Mice, Transgenic; D015778:Minor Histocompatibility Antigens; D022423:Myeloid Cells / Q000276:immunology* / Q000378:metabolism; D010581:Peyer's Patches / Q000166:cytology* / Q000276:immunology* / Q000378:metabolism; D011956:Receptors, Cell Surface / Q000096:biosynthesis; D013154:Spleen / Q000166:cytology / Q000276:immunology / Q000378:metabolism; D013601:T-Lymphocytes / Q000166:cytology / Q000276:immunology / Q000378:metabolism; D015854:Up-Regulation / Q000276:immunology
chemical_list: D015703:Antigens, CD; D018122:B7-1 Antigen; D051940:B7-2 Antigen; D016827:CD8 Antigens; C497965:Cd86 protein, mouse; C093569:DEC-205 receptor; D018984:Epitopes, T-Lymphocyte; D000949:Histocompatibility Antigens Class II; D037181:Lectins, C-Type; D016177:Macrophage-1 Antigen; D008562:Membrane Glycoproteins; D015778:Minor Histocompatibility Antigens; D011956:Receptors, Cell Surface; D016753:Interleukin-10; D018664:Interleukin-12; D015847:Interleukin-4; D007371:Interferon-gamma