| Project/Area Number |
26460963
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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 |
Gastroenterology
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| Research Institution | Tokyo Medical and Dental University |
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Principal Investigator |
FUJII TOSHIMITSU 東京医科歯科大学, 医学部附属病院, 助教 (30547451)
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| Co-Investigator(Kenkyū-buntansha) |
永石 宇司 東京医科歯科大学, 医学部附属病院, 助教 (60447464)
渡辺 守 (渡邉 守) 東京医科歯科大学, 大学院医歯学総合研究科, 教授 (10175127)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 下部消化管学 / 炎症性腸疾患 / 新規治療 / 腸管免疫 / リンパ球動態制御 / 下部消化管学（小腸、大腸） |
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| Outline of Final Research Achievements |
Fingolimod is a sphingosine-1-phosphate receptor modulator, which inhibits T cell egress from lymph nodes, thereby prevents pathogenic T cells from migrating towards disease sites. In inflammatory bowel diseases (IBD), it is thought that colitogenic memory T cells are reactivated in regional lymphoid organs, and return to inflammatory tissues. We demonstrated that fingolimod prevents the development of colitis induced by the adoptive transfer of naive T cells (naive T colitis) and colitogenic effector-memory T cells (memory T colitis) into SCID mice. Next, we demonstrated that fingolimod decreased T cells in peripheral blood, but conversely increased in bone marrow in the mice lacking lymph nodes and spleen. Notably, fingolimod prevented the development of memory T colitis without lymph nodes and spleen. Collectively, fingolimod may offer an additional role to direct trafficking of T cells in bone marrow, resulting in the prevention of memory T cell-mediated diseases including IBD.
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