| Literature DB >> 12237122 |
Manabu Yanagita1, Yoshio Shimabukuro, Takenori Nozaki, Naoko Yoshimura, Junko Watanabe, Hiroko Koide, Mami Terakura, Teruyuki Saho, Masahide Takedachi, Myoung-Ho Jang, Hiroshi Kiyono, Shinya Murakami.
Abstract
To investigate the biological activity of epithelial cells in view of host defense, we analyzed the mRNA expression of inducible NOS (iNOS) as well as NO production by human gingival epithelial cells (HGEC) stimulated with IL-15. RT-PCR analysis revealed that HGEC expressed IL-15 receptor alpha-chain mRNA. In addition, stimulation with IL-15 enhanced iNOS expression by HGEC through an increase of both mRNA and protein levels. Moreover, IL-15 up-regulated the production of NO(2)(-)/NO(3)(-), a NO-derived stable end product, from HGEC. The enhanced NO production by IL-15 was inhibited by AMT, an iNOS-specific inhibitor. These results suggest that IL-15 is a potent regulator of iNOS expression by HGEC and involved in innate immunity in the mucosal epithelium.Entities:
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Year: 2002 PMID： 12237122 DOI： 10.1016/s0006-291x(02)02201-5
Source DB: PubMed Journal: Biochem Biophys Res Commun ISSN： 0006-291X Impact factor: 3.575