PMID- 22962607 OWN - NLM STAT- MEDLINE DCOM- 20130122 LR - 20211021 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 7 IP - 9 DP - 2012 TI - CD86 and IL-12p70 are key players for T helper 1 polarization and natural killer cell activation by Toll-like receptor-induced dendritic cells. PG - e44266 LID - 10.1371/journal.pone.0044266 [doi] LID - e44266 AB - BACKGROUND: Dendritic cells (DCs) determine the activation and polarization of T cells via expression of costimulatory molecules and secretion of cytokines. The function of DCs derived from monocytes ex vivo strongly depends on the composition of the maturation cocktail used. METHODOLOGY/PRINCIPAL FINDINGS: We analyzed the effect of costimulatory molecule expression and cytokine secretion by DCs on T and natural killer (NK) cell activation by conducting a head-to-head comparison of a Toll-like receptor (TLR) agonist-based cocktail with the standard combination of proinflammatory cytokines or IL-10 alone. We could show that TLR-induced DCs are characterized by a predominance of costimulatory over coinhibitory molecules and by high secretion of IL-12p70, but not IL-10. Functionally, these signals translated into an increase in IFN-gamma secreting Th1 cells and a decrease in regulatory T cells. T cell activation and polarization were dependent on IL-12p70 and CD86, but remarkably not on CD80 signaling. By means of IL-12p70 secretion, only TLR-induced DCs activated NK cells. CONCLUSIONS/SIGNIFICANCE: TLR-matured DCs are highly suitable for application in immunotherapeutic strategies that rely on strong type 1 polarization and NK cell activation. Their effects particularly depend on high CD86 expression and IL-12p70 secretion. FAU - Lichtenegger, Felix S AU - Lichtenegger FS AD - Department of Internal Medicine III, Klinikum der Universitat Munchen, Munich, Germany. Felix.Lichtenegger@med.uni-muenchen.de FAU - Mueller, Katharina AU - Mueller K FAU - Otte, Bettina AU - Otte B FAU - Beck, Barbara AU - Beck B FAU - Hiddemann, Wolfgang AU - Hiddemann W FAU - Schendel, Dolores J AU - Schendel DJ FAU - Subklewe, Marion AU - Subklewe M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120904 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (B7-2 Antigen) RN - 0 (TLR3 protein, human) RN - 0 (Toll-Like Receptor 3) RN - 130068-27-8 (Interleukin-10) RN - 187348-17-0 (Interleukin-12) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Animals MH - B7-2 Antigen/genetics/*immunology MH - Cell Differentiation/genetics/immunology MH - Cell Line MH - Coculture Techniques MH - Dendritic Cells/*immunology/metabolism MH - Fibroblasts/metabolism MH - Flow Cytometry MH - Gene Expression/immunology MH - Humans MH - Interferon-gamma/immunology/metabolism MH - Interleukin-10/immunology MH - Interleukin-12/*immunology/metabolism MH - Killer Cells, Natural/*immunology/metabolism MH - Lymphocyte Activation/immunology MH - Mice MH - Primary Cell Culture MH - Signal Transduction/immunology MH - T-Lymphocytes, Regulatory/immunology/metabolism MH - Th1 Cells/*immunology/metabolism MH - Toll-Like Receptor 3/genetics/*immunology PMC - PMC3433478 COIS- Competing Interests: Dolores J. Schendel declares a competing interest through pending patents submitted by the Helmholtz Zentrum Munchen, German Research Center for Environmental Health (Munich, Germany). These pending patents relate to "Composition for the Preparation of Mature Dendritic Cells". This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials. EDAT- 2012/09/11 06:00 MHDA- 2013/01/23 06:00 PMCR- 2012/09/04 CRDT- 2012/09/11 06:00 PHST- 2012/05/10 00:00 [received] PHST- 2012/07/31 00:00 [accepted] PHST- 2012/09/11 06:00 [entrez] PHST- 2012/09/11 06:00 [pubmed] PHST- 2013/01/23 06:00 [medline] PHST- 2012/09/04 00:00 [pmc-release] AID - PONE-D-12-13499 [pii] AID - 10.1371/journal.pone.0044266 [doi] PST - ppublish SO - PLoS One. 2012;7(9):e44266. doi: 10.1371/journal.pone.0044266. Epub 2012 Sep 4.