PMID- 14656751 OWN - NLM STAT- MEDLINE DCOM- 20040226 LR - 20061115 IS - 1073-449X (Print) IS - 1073-449X (Linking) VI - 169 IP - 4 DP - 2004 Feb 15 TI - Regulation of mite allergen-pulsed murine dendritic cells by respiratory syncytial virus. PG - 494-8 AB - Dendritic cells (DCs) are the only antigen-presenting cells that determine T-cell differentiation and play an important role in both allergy and viral infection. Respiratory syncytial virus (RSV) can infect DCs and affect their functions. The aim of this study was to determine the interaction between RSV infection and Dermatophagoides farinae allergen (D. farinae) sensitization on the development of allergy at the DC level. Murine bone marrow-derived DCs were prepared and treated as: control; D. farinae-pulsed DCs (D. farinae-DCs); ultraviolet-inactivated RSV challenged; RSV-infected, D. farinae-pulsed plus ultraviolet-inactivated RSV-challenged; and D. farinae-pulsed plus RSV-infected. In in vitro experiments, we compared the expression of costimulatory molecules and cytokine production between the six groups of DCs. Another group of naive mice were then intranasally inoculated with these DCs, after which intranasal challenge with D. farinae was performed to develop allergic airway inflammation in vivo. In comparison with D. farinae-DCs, D. farinae-pulsed plus RSV-infected DCs showed helper T cell (Th) 1-favored expression of costimulatory molecules and cytokine production. Allergic airway inflammation induced by intranasal instillation of D. farinae-DCs was abrogated when infected with RSV, which was associated with a concomitant suppression of Th2 response in the lung. Our results indicated that RSV suppresses D. farinae-DCs to induce Th2 response both in vitro and in vivo through regulation of expression of surface markers and production of immunoregulatory cytokines. FAU - Kondo, Yuki AU - Kondo Y AD - Second Department of Internal Medicine, Nagasaki University School of Medicine, Nagasaki, Japan. FAU - Matsuse, Hiroto AU - Matsuse H FAU - Machida, Ikuko AU - Machida I FAU - Kawano, Tetsuya AU - Kawano T FAU - Saeki, Sachiko AU - Saeki S FAU - Tomari, Shinya AU - Tomari S FAU - Obase, Yasushi AU - Obase Y FAU - Fukushima, Chizu AU - Fukushima C FAU - Kohno, Shigeru AU - Kohno S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20031204 PL - United States TA - Am J Respir Crit Care Med JT - American journal of respiratory and critical care medicine JID - 9421642 RN - 0 (Antigens, Dermatophagoides) RN - 0 (Antigens, Surface) RN - 0 (Cytokines) SB - IM MH - Animals MH - Antigens, Dermatophagoides/*immunology MH - Antigens, Surface/analysis MH - Cells, Cultured MH - Cytokines/biosynthesis MH - Dendritic Cells/*immunology/*virology MH - Female MH - Lung/pathology MH - Lymph Nodes/metabolism MH - Mice MH - Mice, Inbred BALB C MH - Respiratory Hypersensitivity/*immunology/pathology/virology MH - Respiratory Syncytial Virus Infections/*immunology/pathology MH - Respiratory Syncytial Viruses/*immunology MH - Respiratory Tract Infections/immunology/pathology MH - Th2 Cells/immunology/metabolism EDAT- 2003/12/06 05:00 MHDA- 2004/02/27 05:00 CRDT- 2003/12/06 05:00 PHST- 2003/12/06 05:00 [pubmed] PHST- 2004/02/27 05:00 [medline] PHST- 2003/12/06 05:00 [entrez] AID - 200305-663OC [pii] AID - 10.1164/rccm.200305-663OC [doi] PST - ppublish SO - Am J Respir Crit Care Med. 2004 Feb 15;169(4):494-8. doi: 10.1164/rccm.200305-663OC. Epub 2003 Dec 4.