PMID- 27596279 OWN - NLM STAT- MEDLINE DCOM- 20171205 LR - 20171213 IS - 1872-7603 (Electronic) IS - 0165-0378 (Linking) VI - 118 DP - 2016 Nov TI - Longitudinal characterization of bovine monocyte-derived dendritic cells from mid-gestation into subsequent lactation reveals nadir in phenotypic maturation and macrophage-like cytokine profile in late gestation. PG - 1-8 LID - S0165-0378(16)30094-8 [pii] LID - 10.1016/j.jri.2016.08.003 [doi] AB - Changes in monocyte and dendritic cell populations during bovine pregnancy and lactation remain poorly described despite the key roles these cells play in immune tolerance and activation. Using a prospective longitudinal study, we characterized CD14+ monocyte-derived dendritic cell (moDC) differentiation and maturation and captured monocyte composition dynamics from mid-gestation through calving and into the subsequent lactation in dairy cows (n=7). First, we measured absolute counts of classical (CD14+CD16-, cM), intermediate (CD14+CD16+, intM), and nonclassical (CD14-CD16+, ncM) monocytes in the blood and determined proportions of individual subsets within the total monocyte population. We found the proportion of cM decreased and intM increased significantly by early lactation, whereas there was a nadir in the proportion of ncM in late gestation, two weeks prepartum. Monocyte composition appears to be regulated in pregnancy, possibly to limit the proportion of highly inflammatory monocytes i.e. intM. Ultimately, we found that moDC differentiated from CD14+ monocytes isolated in the early dry period of late gestation had impaired E. coli-induced maturation, with nadirs in upregulation of CD80 and MHC II, and downregulation of CD14. The moDC from late gestation also had altered cytokine profiles with greatest production of pro-inflammatory IL-1beta and anti-inflammatory IL-10. These data suggest monocytes in late gestation, in contrast to other stages of pregnancy and lactation, differentiate and maturate into moDC less capable of eliciting strong T cell activation, and have macrophage-like cytokine profiles. These results provide insight into maternal immune modulation and elucidate potential immune changes necessary to facilitate bovine pregnancy. CI - Copyright (c) 2016 Elsevier Ireland Ltd. All rights reserved. FAU - Pomeroy, Brianna AU - Pomeroy B AD - S3 119, Schurman Hall, College of Veterinary Medicine, Cornell University, Ithaca, NY 14850, United States; Department of Population Medicine & Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, United States. Electronic address: bjp62@cornell.edu. FAU - Sipka, Anja AU - Sipka A AD - Department of Population Medicine & Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, United States. Electronic address: ass233@cornell.edu. FAU - Klaessig, Suzanne AU - Klaessig S AD - Department of Population Medicine & Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, United States. Electronic address: skc10@cornell.edu. FAU - Schukken, Ynte AU - Schukken Y AD - Department of Population Medicine & Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, United States; GD Animal Health, Deventer, The Netherlands; Department of Animal Sciences, Wageningen University, Wageningen, The Netherlands. Electronic address: Y.Schukken@gddeventer.com. LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20160830 PL - Ireland TA - J Reprod Immunol JT - Journal of reproductive immunology JID - 8001906 RN - 0 (Interleukin-1beta) RN - 0 (Lipopolysaccharide Receptors) RN - 0 (Receptors, IgG) RN - 130068-27-8 (Interleukin-10) SB - IM MH - Animals MH - Cattle MH - Cell Differentiation MH - Cells, Cultured MH - Dendritic Cells/*immunology MH - Female MH - Immune Tolerance MH - Immunophenotyping MH - Interleukin-10/metabolism MH - Interleukin-1beta/metabolism MH - Lactation/immunology MH - Lipopolysaccharide Receptors/metabolism MH - Longitudinal Studies MH - Lymphocyte Activation MH - Macrophages/*immunology MH - Monocytes/*immunology MH - Pregnancy/*immunology MH - Prospective Studies MH - Receptors, IgG/metabolism MH - T-Lymphocytes/*immunology OTO - NOTNLM OT - Bovine OT - Monocyte-derived dendritic cells OT - Monocytes OT - Pregnancy EDAT- 2016/09/07 06:00 MHDA- 2017/12/06 06:00 CRDT- 2016/09/07 06:00 PHST- 2016/04/08 00:00 [received] PHST- 2016/07/25 00:00 [revised] PHST- 2016/08/15 00:00 [accepted] PHST- 2016/09/07 06:00 [pubmed] PHST- 2017/12/06 06:00 [medline] PHST- 2016/09/07 06:00 [entrez] AID - S0165-0378(16)30094-8 [pii] AID - 10.1016/j.jri.2016.08.003 [doi] PST - ppublish SO - J Reprod Immunol. 2016 Nov;118:1-8. doi: 10.1016/j.jri.2016.08.003. Epub 2016 Aug 30.