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Analysis of B cell functions regulating intestinal mucosal permeability on the pathogenesis of Crohn's disease

Research Project

Project/Area Number 21K07961
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

Ishihara Shunji  島根大学, 学術研究院医学・看護学系, 教授 (80263531)

Co-Investigator(Kenkyū-buntansha) 三島 義之  島根大学, 学術研究院医学・看護学系, 助教 (30397864)
岡 明彦  島根大学, 学術研究院医学・看護学系, 助教 (80600600)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords腸管粘膜透過性 / クローン病 / 制御性B細胞 / 制御性T細胞 / IL-10 / アデノシン三リン酸
Outline of Research at the Start

これまで私共は、クローン病(CD)では、制御性B細胞(Breg)の機能が減弱していること、dysbiosis環境下では組織の細胞外アデノシン三リン酸(ATP)がBregの機能を低下させることを明らかにした。一方、腸管粘膜透過性は多彩なメカニズムによって担われているが、Bregによる透過性制御に関する報告はない。私共は、「CDでは、Bregの異常が腸管粘膜透過性の制御機能を低下させ、腸管炎症増悪に関与する」という仮説を検証する。本研究の成果は、CDの病態と“leaky gut syndrome”の病態解明につながる可能性があり、これまでと異なる視点からの診断法や治療法の開発に貢献できると考える。

Outline of Final Research Achievements

In this research project, we hypothesized that abnormalities in regulatory B cells (Breg) are associated with reduced regulation of intestinal mucosal permeability (IMP) and exacerbated intestinal inflammations in Crohn's disease. T and B cells were isolated from the spleen of C57BL/6 mice, administered into the abdominal cavity of Rag2-KO mice, and their IMP was assessed. The IMP was reduced during B cell engraftment compared to T cell engraftment. For the in vitro model of intestinal permeability regulation, a model was created in which the colonic epithelium (Caco-2) were cultured on the apical side of the trans-well, and T or B cells were co-cultured on the basolateral side. In vitro study revealed that the permeability of the epithelium was reduced when co-cultured with B cells rather than T cells, reflecting the results of the in vivo mouse transfer model.

Academic Significance and Societal Importance of the Research Achievements

申請者らはこれまでの研究において「クローン病(CD)における制御性B細胞(Breg)の機能異常を介した炎症増悪メカニズム」を明らかにしていた。さらに今回の申請課題における「腸管の粘膜透過性制御メカニズムを生体の免疫細胞の機能から解明する」という点は、過去に全く報告のない着眼点であった。これらの新規性の高い二つの視点を組み合わせた本研究は、極めて学術的独自性と創造性に富んだ研究内容であることは言うまでもなく、本研究で検証した「Bregによる粘膜透過性制御メカニズム」は、CDのみならず他の“leaky gut”に関わる疾患に対しても、これまでと異なる視点からの病態解明につながると思われる。

Report

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

    (11 results)

All 2023 2022 2021

All Journal Article (9 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 9 results,  Open Access: 6 results) Presentation (2 results)

  • [Journal Article] Anxiety and behavioral changes in Japanese patients with inflammatory bowel disease due to COVID-19 pandemic: a national survey2023

    • Author(s)
      Nakase Hiroshi、Wagatsuma Kohei、Nojima Masanori、et al.
    • Journal Title

      Journal of Gastroenterology

      Volume: 58 Issue: 3 Pages: 205-216

    • DOI

      10.1007/s00535-022-01949-6

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Low Fecal Calprotectin Predicts Histological Healing in Patients with Ulcerative Colitis with Endoscopic Remission and Leads to Prolonged Clinical Remission2022

    • Author(s)
      Kawashima Kousaku、Oshima Naoki、Kishimoto Kenichi、Kataoka Masatoshi、Fukunaga Mai、Kotani Satoshi、Sonoyama Hiroki、Oka Akihiko、Mishima Yoshiyuki、Kazumori Hideaki、Ishikawa Noriyoshi、Araki Asuka、Ishihara Shunji
    • Journal Title

      Inflammatory Bowel Diseases

      Volume: 29 Issue: 3 Pages: 359-366

    • DOI

      10.1093/ibd/izac095

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Interim analysis of a multicenter registry study of COVID-19 patients with inflammatory bowel disease in Japan (J-COSMOS)2022

    • Author(s)
      Nakase Hiroshi、Hayashi Yuki、Hirayama Daisuke、、Ishihara Shunji、et all、J-COSMOS group
    • Journal Title

      Journal of Gastroenterology

      Volume: 57 Issue: 3 Pages: 174-184

    • DOI

      10.1007/s00535-022-01851-1

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Long-lasting renal dysfunction following tacrolimus induction therapy in ulcerative colitis patients2022

    • Author(s)
      Cha Na、Oshima Naoki、Kishimoto Kenichi、Kotani Satoshi、Okimoto Eiko、Yazaki Tomotaka、Sonoyama Hiroki、Oka Akihiko、Mishima Yoshiyuki、Shibagaki Kotaro、Tobita Hiroshi、Kawashima Kousaku、Ishimura Norihisa、Ishihara Shunji
    • Journal Title

      Journal of Clinical Biochemistry and Nutrition

      Volume: 70 Issue: 3 Pages: 297-303

    • DOI

      10.3164/jcbn.21-139

    • ISSN
      0912-0009, 1880-5086
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Induction of mucosal healing by intensive granulocyte/monocyte adsorptive apheresis (GMA) without use of corticosteroids in patients with ulcerative colitis: long-term remission maintenance after induction by GMA and efficacy of GMA re-treatment upon relapse2022

    • Author(s)
      Fukuchi Takumi、Kawashima Kousaku、Koga Hideaki、Utsunomiya Ran、Sugiyama Kohei、Shimazu Keiji、Eguchi Takaaki、Ishihara Shunji
    • Journal Title

      Journal of Clinical Biochemistry and Nutrition

      Volume: 70 Issue: 2 Pages: 197-204

    • DOI

      10.3164/jcbn.21-112

    • NAID

      130008165962

    • ISSN
      0912-0009, 1880-5086
    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Genetic Background of Mesalamine-induced Fever and Diarrhea in Japanese Patients with Inflammatory Bowel Disease2021

    • Author(s)
      Suzuki K, Kakuta Y, Naito T, Takagawa T, Hanai H, Araki H, Sasaki Y, Sakuraba H, Sasaki M, Hisamatsu T, Motoya S, Matsumoto T, Onodera M, Ishiguro Y, Nakase H, et al.
    • Journal Title

      Inflamm Bowel Dis

      Volume: - Issue: 1 Pages: 21-31

    • DOI

      10.1093/ibd/izab004

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Enteric Microbiota-Mediated Serotonergic Signaling in Pathogenesis of Irritable Bowel Syndrome2021

    • Author(s)
      Mishima Yoshiyuki、Ishihara Shunji
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 19 Pages: 10235-10235

    • DOI

      10.3390/ijms221910235

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Juvenile social defeat stress exposure favors in later onset of irritable bowel syndrome-like symptoms in male mice2021

    • Author(s)
      Matsumoto Kenjiro、Takata Kana、Yamada Daisuke、Usuda Haruki、Wada Koichiro、Tada Maaya、Mishima Yoshiyuki、Ishihara Shunji、Horie Syunji、Saitoh Akiyoshi、Kato Shinichi
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 16276-16276

    • DOI

      10.1038/s41598-021-95916-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Discontinuation of infliximab in patients with ulcerative colitis in remission (HAYABUSA): a multicentre, open-label, randomised controlled trial.2021

    • Author(s)
      Kobayashi T, Motoya S, Nakamura S, Yamamoto T, Nagahori M, Tanaka S, Hisamatsu T, Hirai F, Nakase H, Watanabe K, Matsumoto T, Tanaka M, Abe T, Suzuki Y, Watanabe M, Hibi T; HAYABUSA Study Group
    • Journal Title

      Lancet Gastroenterol Hepatol.

      Volume: 6 Issue: 6 Pages: 429-437

    • DOI

      10.1016/s2468-1253(21)00062-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 高齢潰瘍性大腸炎患者に対するタクロリムス投与における腎機能障害の検討2021

    • Author(s)
      大嶋 直樹  川島 耕作  石原 俊治
    • Organizer
      第107回日本消化器病学会総会
    • Related Report
      2021 Research-status Report
  • [Presentation] 実臨床における難治性潰瘍性大腸炎に対するウステキヌマブの治療成績2021

    • Author(s)
      川島 耕作  大嶋 直樹  岡  明彦  三島 義之  石原 俊治
    • Organizer
      第115回日本消化器病学会中国支部例会
    • Related Report
      2021 Research-status Report

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

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