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Role of gut microbiota for small intestinal ulcer diseases

Research Project

Project/Area Number 18K07933
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionThe University of Tokyo

Principal Investigator

Nakada Ayako  東京大学, 医学部附属病院, 特任臨床医 (70815448)

Co-Investigator(Kenkyū-buntansha) 早河 翼  東京大学, 医学部附属病院, 助教 (60777655)
山田 篤生  東京大学, 医学部附属病院, 助教 (80534932)
新倉 量太  東京大学, 医学部附属病院, 助教 (90625609)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords薬剤性小腸粘膜障害 / 腸内細菌 / Fusobacterium / マウスモデル / 小腸粘膜障害 / Dysbiosis / 幹細胞 / 胃細菌叢 / 小腸細菌叢
Outline of Final Research Achievements

To identify pathogenesis of small intestinal ulcer, we analyzed human small intestinal mucosal microbiota. In 16srRNA analyses, mean number of reads was 22027 (std 35447) and suggested high number of bacteria. In Beta analyses, proteobacteria was significantly identified in human small intestinal mucosa. These results suggested that dysbiosis was associated with human small intestinal diseases.
In addition, we developed a small intestinal ulcer disease mouse model. To develop the model, we used wild type mise that were administrated intraperitoneal or oral 90mg/kg diclofenac. In Immunohistochemical analyses demonstrated that these mucosal ulcers were occurred by apoptosis.

Academic Significance and Societal Importance of the Research Achievements

難治性疾患である小腸粘膜障害の病態は十分に解明されていない。近年の腸内細菌の研究により、細菌叢と小腸粘膜障害の関連の可能性が指摘されていた。本研究はその可能性がヒトの小腸粘膜組織においてその意義を検討したものである。本研究結果は、細菌叢のdysbiosisと小腸粘膜障害の関連を支持する有用な結果といえる。さらに、本研究においては、今後これらの病態解明や治療法の開発のために有用となるマウスモデルの構築も行うことができた。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (5 results)

All 2019 2018

All Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 1 results)

  • [Journal Article] Alpha-Blockers As Colorectal Cancer Chemopreventive: Findings from a Case?Control Study, Human Cell Cultures, and In Vivo Preclinical Testing2019

    • Author(s)
      Suzuki Nobumi、Niikura Ryota、Ihara Sozaburo、Hikiba Yohko、Kinoshita Hiroto、Higashishima Naoko、Hayakawa Yoku、Yamada Atsuo、Hirata Yoshihiro、Nakata Ryo、Okamoto Makoto、Sano Munetaka、Kushiyama Akifumi、Ichinose Mari、Woods Susan L.、Worthley Daniel、Iwamoto Yasuhiko、Koike Kazuhiko
    • Journal Title

      Cancer Prevention Research

      Volume: 12 Issue: 3 Pages: 185-194

    • DOI

      10.1158/1940-6207.capr-18-0288

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] BHLHA15-Positive Secretory Precursor Cells Can Give Rise to Tumors in Intestine and Colon in Mice2019

    • Author(s)
      Hayakawa Yoku、Tsuboi Mayo、Asfaha Samuel、Kinoshita Hiroto、Niikura Ryota、Konishi Mitsuru、Hata Masahiro、Oya Yukiko、,,,Koike Kazuhiko、Wang Timothy C.
    • Journal Title

      Gastroenterology

      Volume: 156 Issue: 4 Pages: 1066-1081.e16

    • DOI

      10.1053/j.gastro.2018.11.024

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Role of warfarin as a predictor of recurrent bleeding after negative small-bowel capsule endoscopy2018

    • Author(s)
      Niikura Ryota、Yamada Atsuo、Hirata Yoshihiro、Hayakawa Yoku、Suzuki Hirobumi、Yamamoto Shinzo、Fujishiro Mitsuhiro、Koike Kazuhiko
    • Journal Title

      Gastrointestinal Endoscopy

      Volume: 88 Issue: 3 Pages: 574-574

    • DOI

      10.1016/j.gie.2018.04.2344

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] The Tuft Cell-ILC2 Circuit Integrates Intestinal Defense and Homeostasis2018

    • Author(s)
      Hayakawa Yoku、Wang Timothy C.
    • Journal Title

      Cell

      Volume: 174 Issue: 2 Pages: 251-253

    • DOI

      10.1016/j.cell.2018.06.037

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Genetic editing of colonic organoids provides a molecularly distinct and orthotopic preclinical model of serrated carcinogenesis2018

    • Author(s)
      Lannagan Tamsin R M、,,,、Hayakawa Yoku,,, Worthley Daniel L、Woods Susan L
    • Journal Title

      Gut

      Volume: 68 Issue: 4 Pages: 684-692

    • DOI

      10.1136/gutjnl-2017-315920

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

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