2015 Fiscal Year Final Research Report
Regulation of intestinal and hepatic immunity and metabolism by vitamin D receptor
| Project/Area Number |
25460394
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Pathological medical chemistry
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| Research Institution | Nihon University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
SEKI Shuji 防衛医科大学校, 医学教育部医学科進学課程, 教授 (80531392)
UMEDA Kaori 日本大学, 医学部, 助手 (10445744)
ISHIZAWA Michiyasu 日本大学, 医学部, 助手 (30646542)
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| Research Collaborator |
YAMADA Sachiko
NISHIDA Shigeru
UMEDA Naoki
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | ビタミンD受容体 / 肝障害 / クッパ－細胞 / NKT細胞 / 肝臓 / 胆汁酸 / サイトカイン / ビタミンD誘導体 |
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| Outline of Final Research Achievements |
We examined the roles of vitamin D receptor (VDR) in immunity and metabolism in the liver and intestine. We compared the effects of inflammatory stimulants, such as lipopolysaccharide and concanavalin A, on hepatic immune cells isolated from wild-type mice and VDR knockout mice and their in vivo effects. VDR deletion reduced the inflammatory response of Kupffer cells and NK cells against lipopolysaccharide and alleviated concanavalin A-induced hepatitis. Experiments using a chenodeoxycholic acid-containing diet showed that metabolism of chenodeoxycholic acid and lithocholic acid is disturbed in VDR knockout mice. The results show that VDR plays a role in the hepatic immunity and bile acid metabolism. We developed selective VDR modulators, which should be useful for future studies.
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| Free Research Field |
生化学・分子生物学
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