Elucidation of pathogenesis of autoimmune-mediated interstitial lung disease based on epigenomic analysis
Project/Area Number |
19H03697
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 54020:Connective tissue disease and allergy-related
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Research Institution | The University of Tokyo |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
駒井 俊彦 東京大学, 医学部附属病院, 助教 (50803938)
藤尾 圭志 東京大学, 医学部附属病院, 教授 (70401114)
住友 秀次 東京大学, 医学部附属病院, 講師 (20392996)
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Project Period (FY) |
2019-04-01 – 2022-03-31
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Project Status |
Completed (Fiscal Year 2021)
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Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2020: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2019: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
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Keywords | 間質性肺炎 / 自己免疫性疾患 / T細胞 / TGF-β1 / 膠原病 / CD4陽性T細胞 / TGF-β / 自己免疫疾患 / 肺線維症 / Egr2 / 自己免疫性間質性肺炎 |
Outline of Research at the Start |
本課題において申請者は、自己免疫性間質性肺炎病態形成の中心を担うT細胞、B細胞、マクロファージ、線維芽細胞を用いたエピゲノム解析を行い、TGF-βを介した相互作用という観点から疾患発症メカニズムを解明し、疾患層別化バイオマーカーの探索および個別化医療開発の基盤となる創薬ターゲットの探索を目指す。
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Outline of Final Research Achievements |
The aim of this study is to elucidate the mechanisms of progressive fibrosis in connective tissue disease (CTD) -associated interstitial lung diseases (ILD). First, we confirmed the synergistic effects of cytokines including TGF-β1 on fibroblast activation. Second, we identified a novel effector memory CD4+ T cell subset that highly expresses TGFB1 in the bronchoalveolar lavage fluid in ILD. ATAC-seq (Assay for Transposase-Accessible Chromatin using sequencing) revealed the epigenetic mechanisms that regulate the expression of TGFB1 on the CD4+ T cell subset. These findings indicate that the pro-fibrotic CD4+ T cell subset might play a pivotal role in the progression of lung fibrosis via TGFB1 production. Further detailed analysis of the pro-fibrotic CD4+ T cell induction mechanisms will provide a novel therapeutic target for CTD-associated ILD.
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Academic Significance and Societal Importance of the Research Achievements |
間質性肺炎は、肺胞以外の肺を支える間質部分を中心とした炎症および激しい線維化を来す疾患であり、代表的自己免疫疾患であるリウマチ・膠原病疾患の予後を規定する。本課題では、自己免疫性疾患患者の間質性肺炎の肺胞洗浄液より、線維化促進性のサイトカインを高発現する新規T細胞を同定し、その線維化促進メカニズムを明らかとした。本解析結果は、間質性肺炎治療の新規創薬ターゲット同定に繋がる可能性を内包している。
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Report
(4 results)
Research Products
(25 results)
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[Journal Article] Identifying the most influential gene expression profile in distinguishing ANCA-associated vasculitis from healthy controls.2021
Author(s)
Yanaoka H, Nagafuchi Y, Hanata N, Takeshima Y, Ota M, Suwa Y, Shirai H, Sugimori Y, Okubo M, Kobayashi S, Hatano H, Yamada S, Tsuchida Y, Iwasaki Y, Sumitomo S, Shoda H, Okada M, Okamura T, Yamamoto K, Fujio K.
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Journal Title
J Autoimmun.
Volume: 119
Pages: 102617-102617
DOI
Related Report
Peer Reviewed
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[Journal Article] Integrated bulk and single-cell RNA-sequencing identified disease-relevant monocytes and a gene network module underlying systemic sclerosis.2021
Author(s)
Kobayashi S, Nagafuchi Y, Okubo M, Sugimori Y, Shirai H, Hatano H, Junko M, Yanaoka H, Takeshima Y, Ota M, Iwasaki Y, Sumitomo S, Okamura T, Yamamoto K, Shoda H, Fujio K.
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Journal Title
J Autoimmun
Volume: 116
Pages: 102547-102547
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Identification of U11snRNA as an endogenous agonist of TLR7-mediated immune pathogenesis.2019
Author(s)
Negishi H, Endo N, Nakajima Y, Nishiyama T, Tabunoki Y, Nishio J, Koshiba R, Matsuda A, Matsuki K, Okamura T, Negishi-Koga T, Ichinohe T, Takemura S, Ishiwata H, Iemura SI, Natsume T, Abe T, Kiyonari H, Doi T, Hangai S, Yanai H, Fujio K, Yamamoto K, Taniguchi T.
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Journal Title
Proc Natl Acad Sci U S A
Volume: 116
Issue: 47
Pages: 23653-23661
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] IgG4関連疾患におけるトランスクリプトーム解析とBCRレパトア解析2021
Author(s)
西脇 彩, 駒井 俊彦, 岡村 僚久, 吉田 良知, 波多野 裕明, 大久保 麻衣, 小林 聖未, 杉森 祐介, 中野 正博, 竹島 雄介, 太田 峰人, 土屋 遥香, 永渕 泰雄, 岩崎由希子, 住友秀次, 庄田 宏文, 山本 一彦, 藤尾 圭志
Organizer
第6回日本骨免疫学会
Related Report
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[Presentation] Analysis of class-switching to IgG4 in memory B cell subsets of IgG4-Related Disease2021
Author(s)
Aya Nishiwaki, Toshihiko Komai1 Yasuo Nagafuchi, Mineto Ota1, Ryochi Yoshida, Hiroaki Hatano, Haruka Tsuchiya, Saeko Yamada, Masahiro Nakano, Mai Okubo, Satomi Kobayashi, Yusuke Sugimori, Yusuke Takeshima, Yukiko Iwasaki, Shuji Sumitomo, Hirofumi Shoda, Kazuhiko Yamamoto, Tomohisa Okamura, and Keishi Fujio
Organizer
第50回日本免疫学会学術集会
Related Report
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[Presentation] Immunophenotypic analysis of peripheral blood mononuclear cells in IgG4-Related Disease2020
Author(s)
Aya Nishiwaki, Toshihiko Komai, Tomohisa Okamura, Ryochi Yoshida, Hiroaki Hatano, Mineto Ota, Yasuo Nagafuchi, Haruka Tsuchiya, Saeko Yamada, Masahiro Nakano, Mai Okubo1, Satomi Kobayashi1, Yusuke Sugimori, Yusuke Takeshima, Yukiko Iwasaki, Shuji Sumitomo, Hirofumi Shoda, Kazuhiko Yamamoto, Keishi Fujio
Organizer
22th Asia-Pacific League of Associations for Rheumatology Congress
Related Report
Int'l Joint Research
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[Presentation] IgG4関連疾患における末梢血免疫担当細胞のサブセットの検討2020
Author(s)
西脇 彩, 駒井 俊彦, 岡村 僚久, 吉田 良知, 波多野 裕明, 太田 峰人, 永渕 泰雄, 土屋 遥香, 山田 紗依子, 中野 正博, 大久保 麻衣, 小林 聖未, 杉森 祐介, 竹島 雄介, 岩崎 由希子, 住友 秀次, 庄田 宏文, 山本 一彦, 藤尾 圭志
Organizer
第48回日本臨床免疫学会総会
Related Report
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