PMID- 20974144 OWN - NLM STAT- MEDLINE DCOM- 20110503 LR - 20220129 IS - 1879-0135 (Electronic) IS - 0020-7519 (Linking) VI - 41 IP - 2 DP - 2011 Feb TI - Ascaris lumbricoides pseudocoelomic body fluid induces a partially activated dendritic cell phenotype with Th2 promoting ability in vivo. PG - 255-61 LID - 10.1016/j.ijpara.2010.09.007 [doi] AB - Dendritic cells (DCs) matured with helminth-derived molecules that promote Th2 immune responses do not follow conventional definitions of DC maturation processes. While a number of models of DC maturation by Th2 stimuli are postulated, further studies are required if we are to clearly define DC maturation processes that lead to Th2 immune responses. In this study, we examine the interaction of Th2-inducing molecules from the parasitic helminth Ascaris lumbricoides with the maturation processes and function of DCs. Here we show that murine bone marrow-derived DCs are partially matured by A. lumbricoides pseudocoelomic body fluid (ABF) as characterised by the production of IL-6, IL-12p40 and macrophage inflammatory protein 2 (MIP-2) but no enhanced expression of cluster of differentiation (CD)-14, T-cell co-stimulatory markers CD80, CD86, CD40, OX40L and major histocompatibility complex class II was observed. Despite these phenotypic characteristics, ABF-stimulated DCs displayed the functional hallmarks of fully matured cells, enhancing DC phagocytosis and promoting Th2-type responses in skin-draining lymph node cells in vivo. ABF activated Th2-associated extracellular signal-regulated kinase-1 and nuclear factor-kB intracellular signalling pathways independently of toll-like receptor 4. Taken together, we believe this is the first paper to demonstrate A. lumbricoides murine DC-Th cell-driven responses shedding further light on DC maturation processes by helminth antigens. CI - Copyright (c) 2010 Australian Society for Parasitology Inc. Published by Elsevier Ltd. All rights reserved. FAU - Dowling, David J AU - Dowling DJ AD - Parasite Immune Modulation Group, School of Nursing, Faculty of Science and Health, Dublin City University, Glasnevin, Dublin 9, Ireland. FAU - Noone, Cariosa M AU - Noone CM FAU - Adams, Paul N AU - Adams PN FAU - Vukman, Krisztina V AU - Vukman KV FAU - Molloy, Sile F AU - Molloy SF FAU - Forde, Jessica AU - Forde J FAU - Asaolu, Samuel AU - Asaolu S FAU - O'Neill, Sandra M AU - O'Neill SM LA - eng GR - BB/C503638/2/BB_/Biotechnology and Biological Sciences Research Council/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20101023 PL - England TA - Int J Parasitol JT - International journal for parasitology JID - 0314024 RN - 0 (Cytokines) SB - IM MH - Animals MH - Ascaris lumbricoides/*immunology MH - Body Fluids/*immunology MH - Cells, Cultured MH - Cytokines/metabolism MH - Dendritic Cells/*immunology MH - Female MH - Lymph Nodes/immunology MH - Lymphocyte Activation MH - Mice MH - Mice, Inbred BALB C MH - Mice, Inbred C57BL MH - Phagocytosis MH - Th2 Cells/*immunology EDAT- 2010/10/27 06:00 MHDA- 2011/05/04 06:00 CRDT- 2010/10/27 06:00 PHST- 2010/05/26 00:00 [received] PHST- 2010/09/14 00:00 [revised] PHST- 2010/09/15 00:00 [accepted] PHST- 2010/10/27 06:00 [entrez] PHST- 2010/10/27 06:00 [pubmed] PHST- 2011/05/04 06:00 [medline] AID - S0020-7519(10)00322-X [pii] AID - 10.1016/j.ijpara.2010.09.007 [doi] PST - ppublish SO - Int J Parasitol. 2011 Feb;41(2):255-61. doi: 10.1016/j.ijpara.2010.09.007. Epub 2010 Oct 23.