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Development of new therapy for eosinophilic gastrointestinal diseases targeting the regulation of mucosal barrier

Research Project

Project/Area Number 19K08480
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionHyogo Medical University

Principal Investigator

Oshima Tadayuki  兵庫医科大学, 医学部, 准教授 (00381814)

Co-Investigator(Kenkyū-buntansha) 福井 広一  兵庫医科大学, 医学部, 准教授 (60378742)
三輪 洋人  兵庫医科大学, 医学部, 教授 (80190833)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords好酸球性消化管疾患 / 細胞間接着装置 / タイト結合 / クローディン
Outline of Research at the Start

本研究は,未だ不明な点の多い消化管粘膜バリア機能の破綻がみられる疾患群,特に好酸球性消化管疾患における粘膜バリア機能が破綻する機序およびその制御を明らかにすることを目的とする.全く明らかとなっていない食道の扁平上皮粘膜層(顆粒層,有棘層,基底層)の各層の役割の違いに着目し,好酸球浸潤の程度と各層におけるタイト結合蛋白発現の相関を解析する.さらに上皮由来サイトカインであるIL-25, IL-32, IL-33及びTSLPやグループ2自然リンパ球(ILC2)が産生するサイトカインの粘膜上皮のバリア機能への役割を解析することでバリア機能を制御することによる治療応用の可能性が期待される.

Outline of Final Research Achievements

Esophageal epithelial barrier function, and mast cell infiltration, as well as chemokine levels in eosinophilic esophagitis (EoE) patients before and after treatment were evaluate. Esophageal Epithelial infiltration of mast cells, and permeability were increased in EoE patients. Levels of IL-13, calpain-14, and eotaxin-3 mRNAs were upregulated, while filaggrin, SPINK7, and involucrin mRNAs were downregulated in EoE patients. In patients achieving histologic remission diagnosed by eosinophil counts, a subset of EoE patients with unchanged permeability after treatment showed increased mast cell infiltration, IL-13, calpain-14, filaggrin and SPINK7 with decreased eotaxin-3 and involucrin. Other EoE patients with decreased permeability displayed decreased eotaxin-3, and mast cell infiltration, and increased, filaggrin, and SPINK7. Increased permeability of the esophagus in EoE patients without eosinophil infiltration after treatment was associated with mast cell infiltration.

Academic Significance and Societal Importance of the Research Achievements

好酸球性食道炎は希少疾患であるが,最近日本においても増加傾向にあり,その病態は不明な点が多い.完全に食道の炎症が改善していない状況で治療を中断すると再度炎症が発生して症状に悩まされることになる.これまで食道粘膜内の好酸球浸潤が改善することで治癒判定がなされているが,好酸球浸潤が改善したあとも食道粘膜の透過性が上昇し,肥満細胞浸潤が見られることが明らかとなり,今後治療の判定方法を再考する必要がある.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (5 results)

All 2021 2020 2019

All Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Esophageal epithelial barrier function and inflammation in eosinophilic esophagitis before and after treatment2021

    • Author(s)
      Junji Chen, Tadayuki Oshima, Toshihiko Tomita, Hirokazu Fukui, Hiroto Miwa
    • Organizer
      第49回日本潰瘍学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Effect of treatment on esophageal epithelial barrier function and inflammation in eosinophilic esophagitis2021

    • Author(s)
      Junji Chen, Tadayuki Oshima, Keisuke Nakai, Yoshitaka Kitayama, Ken Hara, Akio Tamura, Masashi Fukushima, Takuya Okugawa, Toshihiko Tomita, Hirokazu Fukui, Hiroto Miwa
    • Organizer
      Asian Pacific Digestive Week (APDW) 2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] 好酸球性食道炎における好酸球浸潤と食道粘膜透過性の関係2020

    • Author(s)
      大島忠之,李敏,三輪洋人
    • Organizer
      第16回日本消化管学会総会学術集会 ワークショップ1
    • Related Report
      2019 Research-status Report
  • [Presentation] DISRUPTION OF ESOPHAGEAL EPITHELIAL BARRIER FUNCTION AND ITS CORRELATION WITH EOSINOPHIL INFILTRATION IN EOSINOPHILIC ESOPHAGITIS2019

    • Author(s)
      Min Li, Tadayuki Oshima, Hiroto Miwa
    • Organizer
      Digestive Disease Week 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 公算急性食道炎における食道粘膜透過性と好酸球浸潤の検討2019

    • Author(s)
      田村彰朗,大島忠之,李敏,三輪洋人
    • Organizer
      日本消化器病学会近畿支部 第111回例会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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