PMID- 30738873 OWN - NLM STAT- MEDLINE DCOM- 20190408 LR - 20190408 IS - 1098-8823 (Print) IS - 1098-8823 (Linking) VI - 141 DP - 2019 Apr TI - Leukotriene B(4) modulation of murine dendritic cells affects adaptive immunity. PG - 34-39 LID - S1098-8823(18)30117-5 [pii] LID - 10.1016/j.prostaglandins.2019.02.001 [doi] AB - Dendritic cells (DCs) link innate and adaptive immunity. The microenvironment generated during the innate immunity affects DCs and the type of adaptive immunity generated. Lipid mediators are released early in inflammation and could modify the functional state of DCs. Leukotriene B(4) (LTB(4)) has a wide range of effects on macrophages and in the present study we investigated if it also affects DCs. Murine bone marrow-derived DCs were employed and it was found that stimulation of DCs with LTB4 (10 nM) increased the gene expression of the high affinity receptor BLT-1 but not of BLT-2. It also increased the co-stimulatory molecule CD86 expression but did not affect CD80 and CD40. LTB(4)-stimulated DCs acquired the capacity to present antigen to T lymphocytes, evidenced by antigen-specific proliferation of CD4(+) lymphocytes in co-cultures of ovalbumin-loaded DCs with DO11.10 splenocytes. LTB(4)-stimulated DCs induced Treg proliferation and increased Th2 cytokine IL-13 in the co-cultures. Expression of transcription factor genes, Gata3 and Foxp3 (Th2 and Treg, respectively) were also found increased. However, the expression of Th1 transcription factor (Tbet) and Th17 (RorgammaT) were not affected. These results indicate that LTB(4) affects DCs and modulates the type of adaptive immune response. CI - Copyright (c) 2019 Elsevier Inc. All rights reserved. FAU - Pires-Lapa, Marco Antonio AU - Pires-Lapa MA AD - Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil. Electronic address: marcolapabio@gmail.com. FAU - Koga, Marianna Mainardi AU - Koga MM AD - Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil. Electronic address: marianna.koga@unil.ch. FAU - da Silva, Ildefonso Alves Jr AU - da Silva IA Jr AD - Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil. Electronic address: iasjr@usp.br. FAU - Filgueiras, Luciano Ribeiro AU - Filgueiras LR AD - Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil. Electronic address: luciano.ribeiro@usp.br. FAU - Jancar, Sonia AU - Jancar S AD - Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil. Electronic address: sojancar@icb.usp.br. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190208 PL - United States TA - Prostaglandins Other Lipid Mediat JT - Prostaglandins & other lipid mediators JID - 9808648 RN - 0 (Immunologic Factors) RN - 0 (Lipopolysaccharides) RN - 1HGW4DR56D (Leukotriene B4) SB - IM MH - Adaptive Immunity/*drug effects MH - Animals MH - Antigen Presentation/drug effects MH - Dendritic Cells/*drug effects/*immunology MH - Immunologic Factors/*pharmacology MH - Leukotriene B4/*pharmacology MH - Lipopolysaccharides/pharmacology MH - Male MH - Mice MH - Mice, Inbred BALB C OTO - NOTNLM OT - Adaptive immunity OT - Dendritic cells OT - Leukotriene B4 EDAT- 2019/02/11 06:00 MHDA- 2019/04/09 06:00 CRDT- 2019/02/11 06:00 PHST- 2018/08/21 00:00 [received] PHST- 2019/01/18 00:00 [revised] PHST- 2019/02/04 00:00 [accepted] PHST- 2019/02/11 06:00 [pubmed] PHST- 2019/04/09 06:00 [medline] PHST- 2019/02/11 06:00 [entrez] AID - S1098-8823(18)30117-5 [pii] AID - 10.1016/j.prostaglandins.2019.02.001 [doi] PST - ppublish SO - Prostaglandins Other Lipid Mediat. 2019 Apr;141:34-39. doi: 10.1016/j.prostaglandins.2019.02.001. Epub 2019 Feb 8.