PMID- 24094416 OWN - NLM STAT- MEDLINE DCOM- 20140905 LR - 20221207 IS - 1878-3279 (Electronic) IS - 0171-2985 (Print) IS - 0171-2985 (Linking) VI - 219 IP - 2 DP - 2014 Feb TI - Probiotic modulation of dendritic cell function is influenced by ageing. PG - 138-48 LID - S0171-2985(13)00162-9 [pii] LID - 10.1016/j.imbio.2013.08.012 [doi] AB - Dendritic cells (DCs) are critical for the generation of T-cell responses. DC function may be modulated by probiotics, which confer health benefits in immunocompromised individuals, such as the elderly. This study investigated the effects of four probiotics, Bifidobacterium longum bv. infantis CCUG 52486, B. longum SP 07/3, Lactobacillus rhamnosus GG (L.GG) and L. casei Shirota (LcS), on DC function in an allogeneic mixed leucocyte reaction (MLR) model, using DCs and T-cells from young and older donors in different combinations. All four probiotics enhanced expression of CD40, CD80 and CCR7 on both young and older DCs, but enhanced cytokine production (TGF-beta, TNF-alpha) by old DCs only. LcS induced IL-12 and IFNgamma production by DC to a greater degree than other strains, while B. longum bv. infantis CCUG 52486 favoured IL-10 production. Stimulation of young T cells in an allogeneic MLR with DC was enhanced by probiotic pretreatment of old DCs, which demonstrated greater activation (CD25) than untreated controls. However, pretreatment of young or old DCs with LPS or probiotics failed to enhance the proliferation of T-cells derived from older donors. In conclusion, this study demonstrates that ageing increases the responsiveness of DCs to probiotics, but this is not sufficient to overcome the impact of immunosenescence in the MLR. CI - Copyright (c) 2013 Elsevier GmbH. All rights reserved. FAU - You, Jialu AU - You J AD - Department of Food and Nutritional Sciences, The University of Reading, Reading, UK. FAU - Dong, Honglin AU - Dong H AD - Department of Food and Nutritional Sciences, The University of Reading, Reading, UK. FAU - Mann, Elizabeth R AU - Mann ER AD - Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark's Campus, Harrow, HA1 3UJ, UK. FAU - Knight, Stella C AU - Knight SC AD - Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark's Campus, Harrow, HA1 3UJ, UK. FAU - Yaqoob, Parveen AU - Yaqoob P AD - Department of Food and Nutritional Sciences, The University of Reading, Reading, UK. Electronic address: p.yaqoob@reading.ac.uk. LA - eng GR - BB/H00470X/1/Biotechnology and Biological Sciences Research Council/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130905 PL - Netherlands TA - Immunobiology JT - Immunobiology JID - 8002742 RN - 0 (Antigens, CD) RN - 0 (CCR7 protein, human) RN - 0 (Cytokines) RN - 0 (Isoantigens) RN - 0 (Receptors, CCR7) SB - IM MH - Adult MH - Aged MH - Aging/immunology MH - Antigen Presentation MH - Antigens, CD/metabolism MH - Bifidobacterium/*immunology MH - Cell Differentiation MH - Cell Proliferation MH - Cells, Cultured MH - Cytokines/metabolism MH - Dendritic Cells/*immunology/microbiology MH - Humans MH - Isoantigens/immunology MH - Lacticaseibacillus casei/*immunology MH - Lacticaseibacillus rhamnosus/*immunology MH - Lymphocyte Activation MH - Lymphocyte Culture Test, Mixed MH - Male MH - *Probiotics MH - Receptors, CCR7/metabolism MH - T-Lymphocytes/*immunology MH - Young Adult PMC - PMC4064698 OTO - NOTNLM OT - Ageing OT - Allogeneic mixed leucocyte reaction OT - CFSE OT - Cytokine OT - DCs OT - Dendritic cells OT - L. casei Shirota OT - LcS OT - MLR OT - PAMPs OT - PRPs OT - Probiotics OT - carboxyfluorescein diacetate succinimidyl ester OT - dendritic cells OT - mixed leucocyte reaction OT - pathogen recognition patterns OT - pathogen-associated molecular patterns EDAT- 2013/10/08 06:00 MHDA- 2014/09/06 06:00 PMCR- 2014/02/01 CRDT- 2013/10/08 06:00 PHST- 2013/03/20 00:00 [received] PHST- 2013/07/30 00:00 [revised] PHST- 2013/08/27 00:00 [accepted] PHST- 2013/10/08 06:00 [entrez] PHST- 2013/10/08 06:00 [pubmed] PHST- 2014/09/06 06:00 [medline] PHST- 2014/02/01 00:00 [pmc-release] AID - S0171-2985(13)00162-9 [pii] AID - 10.1016/j.imbio.2013.08.012 [doi] PST - ppublish SO - Immunobiology. 2014 Feb;219(2):138-48. doi: 10.1016/j.imbio.2013.08.012. Epub 2013 Sep 5.