PMID- 19128898 OWN - NLM STAT- MEDLINE DCOM- 20090804 LR - 20171116 IS - 0378-1135 (Print) IS - 0378-1135 (Linking) VI - 136 IP - 3-4 DP - 2009 May 12 TI - Modulations of phenotype and cytokine expression of porcine bone marrow-derived dendritic cells by porcine reproductive and respiratory syndrome virus. PG - 359-65 LID - 10.1016/j.vetmic.2008.11.013 [doi] AB - Phenotypic and functional property changes of bone marrow-derived immature dendritic cells (BM-imDCs) after porcine reproductive and respiratory syndrome virus (PRRSV) infection have been detailed in a previous report. A down-regulated expression of MHC I molecules along with an up-regulated expression of CD80/86 were observed in BM-imDCs after the exposure to PRRSV. In this study, we further investigate the expression of surface phenotypes of BM-imDCs in relation to their infection status. Exposure of PRRSV to BM-imDCs resulted in a down-regulated expression of MHC I and an up-regulated expression of CD80/86 in infected cells, as demonstrated by significant alterations in both percentage of expressing cells and mean fluorescence intensity (MFI) in PRRSV-positive cells. A significant suppression in MFI of MHC I and an increase in percentage of cells expressing CD80/86 were observed in noninfected bystander cells. We also demonstrated that exposure of BM-imDCs to PRRSV resulted in a significantly increased secretion of IL-1, IL-6, IL-8, IL-10 and IFN-gamma but not IL-12 or TNF-alpha. In addition, the PRRSV infection modulates cytokine expressions of BM-imDCs through their response to microbial pathogen-associated molecular patterns. These results will prove helpful in clarification of the factors that mediate host defense against PRRSV, as well as the possible interaction mechanisms between PRRSV and other microbes in the pathogenesis of PRRSV infection in pigs. FAU - Peng, Yu-Tang AU - Peng YT AD - Department of Veterinary Medicine, National Pingtung University of Science and Technology, Neipu, Pingtung 912, Taiwan, ROC. FAU - Chaung, Hso-Chi AU - Chaung HC FAU - Chang, Hsiu-Luan AU - Chang HL FAU - Chang, Hsueh-Chen AU - Chang HC FAU - Chung, Wen-Bin AU - Chung WB LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20081128 PL - Netherlands TA - Vet Microbiol JT - Veterinary microbiology JID - 7705469 RN - 0 (B7-1 Antigen) RN - 0 (Cytokines) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Histocompatibility Antigens Class II) RN - 0 (Lipopolysaccharides) RN - 0 (Teichoic Acids) RN - 56411-57-5 (lipoteichoic acid) RN - O84C90HH2L (Poly I-C) SB - IM MH - Animals MH - B7-1 Antigen/immunology MH - Cytokines/biosynthesis/genetics/*immunology MH - Dendritic Cells/immunology/*virology MH - Flow Cytometry/veterinary MH - Histocompatibility Antigens Class I/immunology MH - Histocompatibility Antigens Class II/immunology MH - Immunophenotyping/veterinary MH - Lipopolysaccharides/immunology MH - Poly I-C/immunology MH - Porcine Reproductive and Respiratory Syndrome/*immunology/virology MH - Porcine respiratory and reproductive syndrome virus/*immunology MH - Swine MH - Teichoic Acids/immunology EDAT- 2009/01/09 09:00 MHDA- 2009/08/06 09:00 CRDT- 2009/01/09 09:00 PHST- 2008/07/10 00:00 [received] PHST- 2008/11/19 00:00 [revised] PHST- 2008/11/24 00:00 [accepted] PHST- 2009/01/09 09:00 [entrez] PHST- 2009/01/09 09:00 [pubmed] PHST- 2009/08/06 09:00 [medline] AID - S0378-1135(08)00542-7 [pii] AID - 10.1016/j.vetmic.2008.11.013 [doi] PST - ppublish SO - Vet Microbiol. 2009 May 12;136(3-4):359-65. doi: 10.1016/j.vetmic.2008.11.013. Epub 2008 Nov 28.