PMID- 28637954 OWN - NLM STAT- MEDLINE DCOM- 20180326 LR - 20180326 IS - 1880-313X (Electronic) IS - 0388-6107 (Linking) VI - 38 IP - 3 DP - 2017 TI - Increases in IL-33 production by fimbriae and lipopeptide from Porphyromonas gingivalis in mouse bone marrow-derived dendritic cells via Toll-like receptor 2. PG - 189-195 LID - 10.2220/biomedres.38.189 [doi] AB - Interleukin-33 (IL-33) is an IL-1 cytokine family member that is involved in the development of chronic inflammatory diseases and the initiation of allergic inflammation in response to pathogens. Porphyromonas gingivalis is a primary pathogen that is involved in chronic periodontitis and its bacterial components induce inflammatory responses. Dendritic cells (DCs) recognize pathogen- associated molecular patterns by expression of pattern-recognition receptors, such as Toll-like receptors (TLRs). DCs play an essential role in resistance to infection and maintenance of mucosal immune system. In this study, we investigated whether P. gingivalis increases the expression of IL-33 in mouse bone marrow-derived DCs (BMDCs). BMDCs exhibited an increased expression of IL-33 mRNA upon stimulation with P. gingivalis whole cells. Furthermore, fimbriae and lipopeptide derived from P. gingivalis exhibited higher IL-33 mRNA expression than P. gingivalis whole cells. In contrast, lipopolysaccharide derived from P. gingivalis did not induce IL-33 mRNA expression in BMDCs. The IL-33 mRNA expression after stimulation with fimbriae or lipopeptide was up-regulated in BMDCs from wild-type mice but not from TLR2-deficient (TLR2(-/-)) mice. IL-33 production induced by fimbriae and lipopeptide accumulated in the cytoplasm of BMDCs from wild-type mice, but not from TLR2(-/-) mice. These findings suggested that IL-33 production induced by P. gingivalis fimbriae and lipopeptide is recognized by TLR2 and may modulate DC function in periodontal diseases. FAU - Tada, Hiroyuki AU - Tada H AD - Division of Oral Microbiology, Tohoku University Graduate School of Dentistry. FAU - Suzuki, Risako AU - Suzuki R AD - Division of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry. FAU - Nemoto, Eiji AU - Nemoto E AD - Division of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry. FAU - Shimauchi, Hidetoshi AU - Shimauchi H AD - Division of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry. FAU - Matsushita, Kenji AU - Matsushita K AD - Department of Oral Disease Research, National Center for Geriatrics and Gerontology. FAU - Takada, Haruhiko AU - Takada H AD - Division of Oral Microbiology, Tohoku University Graduate School of Dentistry. LA - eng PT - Journal Article PL - Japan TA - Biomed Res JT - Biomedical research (Tokyo, Japan) JID - 8100317 RN - 0 (Il33 protein, mouse) RN - 0 (Interleukin-33) RN - 0 (Lipopolysaccharides) RN - 0 (Tlr2 protein, mouse) RN - 0 (Tlr4 protein, mouse) RN - 0 (Toll-Like Receptor 2) RN - 0 (Toll-Like Receptor 4) SB - IM MH - Animals MH - Bacteroidaceae Infections/*immunology/metabolism/microbiology MH - Bone Marrow/pathology MH - Cells, Cultured MH - Dendritic Cells/immunology/*metabolism/microbiology MH - Fimbriae, Bacterial/immunology MH - Gene Expression MH - Gingivitis/*immunology/metabolism/microbiology MH - Interleukin-33/*biosynthesis/genetics MH - Lipopolysaccharides/pharmacology MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Porphyromonas gingivalis/*immunology MH - Toll-Like Receptor 2/genetics/*metabolism MH - Toll-Like Receptor 4/metabolism MH - Transcriptional Activation EDAT- 2017/06/24 06:00 MHDA- 2018/03/27 06:00 CRDT- 2017/06/23 06:00 PHST- 2017/06/23 06:00 [entrez] PHST- 2017/06/24 06:00 [pubmed] PHST- 2018/03/27 06:00 [medline] AID - 10.2220/biomedres.38.189 [doi] PST - ppublish SO - Biomed Res. 2017;38(3):189-195. doi: 10.2220/biomedres.38.189.