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The mechanism of Immune checkpoint inhibitor related colitis

Research Project

Project/Area Number 21K16010
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionKeio University

Principal Investigator

Mutaguchi Makoto  慶應義塾大学, 医学部(信濃町), 共同研究員 (90868473)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords免疫チェックポイント / 大腸炎 / 免疫チェックポイント阻害 / 炎症性腸疾患 / 免疫チェックポイント阻害腸炎
Outline of Research at the Start

炎症性腸疾患は慢性に炎症を起こす疾患であるが、同じような下痢症状から大腸炎を起こす疾患に免疫チェックポイント阻害剤使用患者における大腸炎が存在する。しかし、これまで免疫チェックポイント阻害剤による大腸炎は内視鏡で観察はほとんど特異的な所見が乏しい。そこで、免疫チェックポイント阻害剤による大腸炎について腸内細菌、免疫学的、内視鏡的形態学を融合して検討する。

Outline of Final Research Achievements

In recent years, the number of patients with immune checkpoint inhibitor (ICI) related adverse events (IrAE) has been increasing in proportion to the increase in the number of patients using ICI. To elucidate the pathogenesis of IrAE colitis, we analyzed the intestinal bacteria and immune cell profiles in IrAE colitis in detail. Akkermansia muciniphila was decreased before and after treatment, and T-cell repertoire converged after treatment.

Academic Significance and Societal Importance of the Research Achievements

これまでIrAE大腸炎については詳細に検討されてこなかった。しかし今回の検討でAkkermansia muciniphilaが発症前に多く、ステロイドなどによる治療後に減少することが判明した。本研究を通じてAkkermansia muciniphilaの増減が周辺環境により起きること、さらに炎症と同様にTCRの多様性も治療前後で変化することは今後の免疫チェックポイント阻害剤の利用によるIrAE大腸炎の発症を減らす意味でも重要である。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (5 results)

All 2023 2022 2021

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results)

  • [Journal Article] Usefulness of texture and color enhancement imaging in assessing mucosal healing in patients with ulcerative colitis2023

    • Author(s)
      Hayashi Yukie、Takabayashi Kaoru、Kato Motohiko、Tojo Anna、Aoki Yasuhiro、Hagihara Yuya、Yoshida Kosuke、Yoshimatsu Yusuke、Kiyohara Hiroki、Sugimoto Shinya、Nanki Kosaku、Mikami Yohei、Sujino Tomohisa、Mutaguchi Makoto、Kawaguchi Takaaki、Hosoe Naoki、Yahagi Naohisa、Ogata Haruhiko、Kanai Takanori
    • Journal Title

      Gastrointestinal Endoscopy

      Volume: 97 Issue: 4 Pages: 759-766.e1

    • DOI

      10.1016/j.gie.2022.11.019

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Epithelium Replacement Contributes to Field Expansion of Squamous Epithelium and Ulcerative Colitis?Associated Neoplasia2022

    • Author(s)
      Sugimoto Shinya、Iwao Yasushi、Shimoda Masayuki、Takabayashi Kaoru、Sato Toshiro、Kanai Takanori、Keio IBD Collaborators
    • Journal Title

      Gastroenterology

      Volume: 162 Issue: 1 Pages: 334-337

    • DOI

      10.1053/j.gastro.2021.09.051

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Red dichromatic imaging reduces bleeding and hematoma during submucosal injection in esophageal endoscopic submucosal dissection2022

    • Author(s)
      Miyazaki Kurato、Kato Motohiko、Sasaki Motoki、Iwata Kentaro、Masunaga Teppei、Kubosawa Yoko、Hayashi Yukie、Mizutani Mari、Kiguchi Yoshiyuki、Takatori Yusaku、Mutaguchi Makoto、Matsuura Noriko、Nakayama Atsushi、Takabayashi Kaoru、Kanai Takanori、Yahagi Naohisa
    • Journal Title

      Surgical Endoscopy

      Volume: - Issue: 11 Pages: 8076-8085

    • DOI

      10.1007/s00464-022-09244-4

    • Related Report
      2021 Research-status Report
  • [Journal Article] Predictors of technical difficulty for complete closure of mucosal defects after duodenal endoscopic resection2021

    • Author(s)
      Mizutani Mari、Kato Motohiko、Sasaki Motoki、Masunaga Teppei、Kubosawa Yoko、Hayashi Yukie、Kiguchi Yoshiyuki、Takatori Yusaku、Mutaguchi Makoto、Matsuura Noriko、Nakayama Atsushi、Fukuhara Seiichiro、Takabayashi Kaoru、Maehata Tadateru、Kanai Takanori、Yahagi Naohisa
    • Journal Title

      Gastrointestinal Endoscopy

      Volume: 94 Issue: 4 Pages: 786-794

    • DOI

      10.1016/j.gie.2021.04.017

    • Related Report
      2021 Research-status Report
  • [Journal Article] Predictors of necessity for endoscopic balloon dilatation in patients with Crohn's disease-related small bowel stenosis2021

    • Author(s)
      Yukie Hayashi, Kaoru Takabayashi, Naoki Hosoe, Hiroki Kiyohara, Satoshi Kinoshita, Kosaku Nanki, Kayoko Fukuhara, Yohei Mikami, Tomohisa Sujino, Makoto Mutaguchi, Takaaki Kawaguchi, Motohiko Kato, Haruhiko Ogata, Takanori Kanai
    • Journal Title

      Ann Med.

      Volume: 53 Issue: 1 Pages: 2025-2033

    • DOI

      10.1080/07853890.2021.1998597

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research

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Published: 2021-04-28   Modified: 2025-01-30  

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