PMID- 19159430 OWN - NLM STAT- MEDLINE DCOM- 20090413 LR - 20211020 IS - 1574-695X (Electronic) IS - 0928-8244 (Print) IS - 0928-8244 (Linking) VI - 55 IP - 2 DP - 2009 Mar TI - Identification of dendritic cell subsets responding to genital infection by Chlamydia muridarum. PG - 226-36 LID - 10.1111/j.1574-695X.2008.00523.x [doi] AB - Dendritic cells (DCs) are central for the induction of T-cell responses needed for chlamydial eradication. Here, we report the activation of two DC subsets: a classical CD11b+ (cDC) and plasmacytoid (pDC) during genital infection with Chlamydia muridarum. Genital infection induced an influx of cDC and pDC into the genital tract and its draining lymph node (iliac lymph nodes, ILN) as well as colocalization with T cells in the ILN. Genital infection with C. muridarum also stimulated high levels of costimulatory molecules on cDC central for the activation of naive T cells in vivo. In contrast, pDC expressed low levels of most costimulatory molecules in vivo and did not secrete cytokines associated with the production of T helper (Th)1 cells in vitro. However, pDC upregulated inducible costimulatory ligand expression and produced IL-6 and IL-10 in response to chlamydial exposure in vitro. Our findings show that these two DC subsets likely have different functions in vivo. cDCs are prepared for induction of antichlamydial T-cell responses, whereas pDCs have characteristics associated with the differentiation of non-Th1 cell subsets. FAU - Moniz, Raymond J AU - Moniz RJ AD - Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, 90095, USA. FAU - Chan, Ann M AU - Chan AM FAU - Kelly, Kathleen A AU - Kelly KA LA - eng GR - CA-16042/CA/NCI NIH HHS/United States GR - R01 AI026328-15/AI/NIAID NIH HHS/United States GR - AI-28697/AI/NIAID NIH HHS/United States GR - T32 AI107126-28/AI/NIAID NIH HHS/United States GR - T32 AI052031/AI/NIAID NIH HHS/United States GR - P30 AI028697/AI/NIAID NIH HHS/United States GR - P30 CA016042/CA/NCI NIH HHS/United States GR - R01 AI026328/AI/NIAID NIH HHS/United States GR - T32 AI52031/AI/NIAID NIH HHS/United States GR - R01 IA-026328/PHS HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20090112 PL - England TA - FEMS Immunol Med Microbiol JT - FEMS immunology and medical microbiology JID - 9315554 RN - 0 (Cytokines) SB - IM MH - Animals MH - Chlamydia Infections/*immunology/*microbiology MH - Chlamydia muridarum/*immunology MH - Cytokines/biosynthesis MH - Dendritic Cells/classification/*immunology/*microbiology MH - Female MH - Genital Diseases, Female/*immunology/*microbiology MH - Mice MH - Mice, Inbred BALB C PMC - PMC3304542 MID - NIHMS92824 EDAT- 2009/01/23 09:00 MHDA- 2009/04/14 09:00 PMCR- 2012/03/15 CRDT- 2009/01/23 09:00 PHST- 2009/01/23 09:00 [entrez] PHST- 2009/01/23 09:00 [pubmed] PHST- 2009/04/14 09:00 [medline] PHST- 2012/03/15 00:00 [pmc-release] AID - FIM523 [pii] AID - 10.1111/j.1574-695X.2008.00523.x [doi] PST - ppublish SO - FEMS Immunol Med Microbiol. 2009 Mar;55(2):226-36. doi: 10.1111/j.1574-695X.2008.00523.x. Epub 2009 Jan 12.