2021 Fiscal Year Final Research Report
Analysis of the IFN-1 and autophagy mediated pathogenesis in inflammatory bowel disease
Project/Area Number |
20K22895
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Multi-year Fund |
Review Section |
0902:General internal medicine and related fields
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Research Institution | Tokyo Medical and Dental University |
Principal Investigator |
Ito Go 東京医科歯科大学, 高等研究院, プロジェクト助教 (20733900)
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Project Period (FY) |
2020-09-11 – 2022-03-31
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Keywords | IFN-1 / Atg16L1 / アポトーシス / ネクロプトーシス / RIP1キナーゼ |
Outline of Final Research Achievements |
We found that IFN-1 induces cell death in intestinal epithelial cells and that this effect is significantly accelerated in Atg16L1-deficient intestinal epithelium. In addition, inactivation of RIP1 kinase, one of the key molecules in the regulation of cell death, confers resistance to IFN-1-induced cell death and suppresses the cell death-enhancing effect in Atg16L1-deficient intestinal epithelium. The IFN-1 response is enhanced and promoted in an environment where intracellular autophagy is impaired, suggesting that the IFN-1-autophagy interaction in the intestinal epithelium plays an important role in the pathogenesis of inflammatory bowel disease and that RIP1 kinase activity may play an central role in this interaction. RIP1 kinase activity may play an important role in the pathogenesis of inflammatory bowel disease.
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Free Research Field |
分子生物学
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Academic Significance and Societal Importance of the Research Achievements |
ウイルス感染は炎症性腸疾患の再燃・増悪因子の一つである。ウイルス感染によりIFN-1は分泌されることが知られている。今回我々は腸上皮における炎症性腸疾患の責任遺伝子であるオートファジー関連遺伝子Atg16L1とRIP1キナーゼが制御する細胞死を介して局所炎症の惹起・遷延に繋がる新規IFN-1応答を明らかとした。以上のことにより「感染による炎症性腸疾患の炎症増悪、遷延に対する新規治療の開発」「新規オートファージー関連細胞死のメカニズムの解明」につながることが期待される。
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