著者
四釜 洋介 黒澤 実愛 松下 健二
出版者
一般社団法人 日本エンドトキシン・自然免疫研究会
雑誌
エンドトキシン・自然免疫研究 (ISSN:24341177)
巻号頁・発行日
vol.22, pp.40-42, 2019 (Released:2019-11-06)
参考文献数
9

Interleukin (IL) -29 is a cytokine belonging to the type Ⅲ interferon family, which regulates a similar set of genes as type Ⅰ interferons. Although type Ⅰ interferons act globally, type Ⅲ interferons primarily target epithelial cells and protect them against the frequent viral attacks that are common for barrier tissues. The antiviral effects of IL-29 have been demonstrated at barrier surfaces in the respiratory and gastrointestinal tracts, liver, blood-brain barrier, and skin, but it remains unknown whether IL-29 exhibits these effects in oral epithelial cells. In this study, we found that the functional IL-29 receptor, interferon-lambda receptor 1, is expressed in epithelial cells from both human oral mucosa and gingiva, but not in human gingival fibroblasts. Although IL-29 stimulation did not induce pro-inflammatory cytokine mRNA expression, such as IL-6 and IL-8, it did induce retinoic acid-inducible gene (RIG) -I and interferon gamma-inducible protein 16 (IFI-16) production via a signal transducers and activator of transcription 1 (STAT1) -dependent pathway in gingival epithelial cells. RIG-I and IFI-16 sense viral nucleic acids, and the stimulation of these receptors induces interferon beta production. Moreover, we confirmed that the augmenting effects of IL-29 on 5’triphosphate double-stranded RNA (a synthetic ligand for RIG-I) -induced interferon beta production in gingival epithelial cells. These data suggest the therapeutic potential of IL-29 for preventing viral infections in the oral mucosa.
著者
松下 健二 引頭 毅
出版者
国立長寿医療センター(研究所)
雑誌
基盤研究(B)
巻号頁・発行日
2007

歯周病の病因におけるエキソサイトーシスの意義とその制御の可能性について検討した。その結果、歯周病原細菌の種々の刺激は、歯周組織を構成する上皮細胞、免疫細胞、血管内皮細胞にエキソサイトーシスを誘導すること、またそれが一酸化窒素(NO)によって際御されることが明らかになった。