PMID- 25223368 OWN - NLM STAT- MEDLINE DCOM- 20150708 LR - 20231213 IS - 1460-2377 (Electronic) IS - 0953-8178 (Linking) VI - 26 IP - 12 DP - 2014 Dec TI - Mycobacterium tuberculosis promotes Th17 expansion via regulation of human dendritic cells toward a high CD14 and low IL-12p70 phenotype that reprograms upon exogenous IFN-gamma. PG - 705-16 LID - 10.1093/intimm/dxu085 [doi] AB - The capacity to develop protective immunity against mycobacteria is heterogeneously distributed among human beings, and it is currently unknown why the initial immune response induced against Mycobacterium tuberculosis (Mtb) does not provide proper clearance of this pathogen. Dendritic cells (DCs) are some of the first cells to interact with Mtb and they play an essential role in development of protective immunity against Mtb. Given that Mtb-infected macrophages have difficulties in degrading Mtb, they need help from IFN-gamma-producing CD4+ T cells propagated via IL-12p70-producing DCs. Here we report that Mtb modifies human DC plasticity by expanding a CD14+ DC subset with weak IL-12p70-producing capacity. The CD14+ Mtb-promoted subset was furthermore poor inducers of IFN-gamma by naive CD4+ T cells, but instead prompted IL-17A-producing RORgammaT+ CD4+ T cells. Mtb-derived peptidoglycan and mannosylated lipoarabinomannan partly recapitulated the subset partition induced by Mtb. Addition of IFN-gamma, but neither IL-17A nor IL-22, which are potentially produced by Mtb-exposed gamma/delta-T cells in mucosal linings, inhibited the differentiation toward CD14+ DCs and promoted high-level IL-12p70 in Mtb-challenged DCs. We conclude that Mtb exploits DC plasticity to reduce production of IL-12p70, and that this process is entirely divertible by exogenous IFN-gamma. These data suggest that strategies to increase local IFN-gamma production in the lungs of tuberculosis patients may boost host immunity toward Mtb. CI - (c) The Japanese Society for Immunology. 2014. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. FAU - Sondergaard, Jonas Norskov AU - Sondergaard JN AD - Center for Biological Sequence Analysis, Department of Systems Biology, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark Present address: Nijmegen Centre for Molecular Life Sciences, Department of Tumor Immunology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands. FAU - Laursen, Janne Marie AU - Laursen JM AD - Center for Biological Sequence Analysis, Department of Systems Biology, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark. FAU - Rosholm, Lisbeth Buus AU - Rosholm LB AD - Center for Biological Sequence Analysis, Department of Systems Biology, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark. FAU - Brix, Susanne AU - Brix S AD - Center for Biological Sequence Analysis, Department of Systems Biology, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark sbp@bio.dtu.dk. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140915 PL - England TA - Int Immunol JT - International immunology JID - 8916182 RN - 0 (Antigens, Surface) RN - 0 (Interleukin-17) RN - 0 (Interleukins) RN - 0 (Lipopolysaccharide Receptors) RN - 0 (Peptidoglycan) RN - 187348-17-0 (Interleukin-12) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Antigens, Surface/metabolism MH - Dendritic Cells/drug effects/*immunology/*metabolism MH - Humans MH - Immunophenotyping MH - Interferon-gamma/pharmacology MH - Interleukin-12/*metabolism MH - Interleukin-17/pharmacology MH - Interleukins/pharmacology MH - Lipopolysaccharide Receptors/*metabolism MH - Mycobacterium tuberculosis/immunology MH - Peptidoglycan/immunology/pharmacology MH - Phenotype MH - T-Lymphocyte Subsets/drug effects/immunology/metabolism MH - Th1 Cells/immunology/metabolism MH - Th17 Cells/drug effects/*immunology/*metabolism MH - Tuberculosis/*immunology/*metabolism MH - Interleukin-22 OTO - NOTNLM OT - IL-17 OT - co-stimulatory molecules OT - mannosylated lipoarabinomannan OT - monocytes OT - naive CD4 T cells EDAT- 2014/09/17 06:00 MHDA- 2015/07/15 06:00 CRDT- 2014/09/17 06:00 PHST- 2014/09/17 06:00 [entrez] PHST- 2014/09/17 06:00 [pubmed] PHST- 2015/07/15 06:00 [medline] AID - dxu085 [pii] AID - 10.1093/intimm/dxu085 [doi] PST - ppublish SO - Int Immunol. 2014 Dec;26(12):705-16. doi: 10.1093/intimm/dxu085. Epub 2014 Sep 15.