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Analysis of the role of the dietary-derived factor genistein on intestinal epithelium

Research Project

Project/Area Number 21K15991
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Kawamoto Ami  東京医科歯科大学, 医学部附属病院光学診療部, 助教 (70849124)

Project Period (FY) 2021-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsゲニステイン / イソフラボン / 潰瘍性大腸炎 / ヒト大腸上皮オルガノイド / チロシンキナーゼ / EGF / HGF / 腸上皮オルガノイド
Outline of Research at the Start

炎症性腸疾患(IBD)は消化管における炎症の寛解・増悪と難治性潰瘍の形成を特徴とする難病である。IBDは遺伝的素因・免疫調節機構の破綻・腸内細菌叢の異常の他、食餌等に由来する環境因子等が複合的に関わり発症・成立する。研究代表者の施設も参加し実施された本邦の大規模な患者対照研究では、潰瘍性大腸炎発症に関わる食餌由来因子としてイソフラボン類が同定されている。そこで本研究では腸上皮のイソフラボン応答に関する研究代表者ら独自の知見に基づき「チロシンキナーゼ阻害」から腸上皮増殖能抑制、創傷治癒遅滞に至る分子経路の全貌を明らかにする。更に同応答の成体大腸炎モデルにおける表現型についても解析を試みる。

Outline of Final Research Achievements

In this study, functional analysis of the isoflavone genistein in the intestinal epithelium using patient-derived human intestinal epithelial organoids showed that genistein has inhibitory effects on the proliferative function of colonic epithelial stem/progenitor cells by selectively inhibiting both EGF and HGF receptors. Furthermore, genistein significantly delayed the wound healing response in a two-dimensional monolayer epithelial wound healing model using patient-derived colonic epithelial organoids. These results indicate that genistein may negatively affect the intestinal mucosa by suppressing stem/progenitor cell function, leading to persistent mucosal damage and possibly lead to the development of ulcerative colitis.

Academic Significance and Societal Importance of the Research Achievements

本邦においてクローン病に対し脂質制限や栄養療法が行われているがその詳細なメカニズムは明らかでない。食餌由来因子と炎症性腸疾患の発症・進展等について特定の食餌因子が腸上皮に対する直接作用を通じて疾患発症に関与し得る機序を示した報告はない。イソフラボン類は本邦で摂取量が多い食餌因子群であり、健康維持に正の効果を有する作用が広く認知されているが、本研究により同因子群のうち、ゲニステインは腸上皮を介した生体に対する負の作用を有し得る当方独自の知見を得た。従って本研究はイソフラボン類の新たな作用機序を明らかとし、今後新たな予防・治療法等への展開に寄与し得るものと考えている。

Report

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

    (12 results)

All 2022 2021

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 2 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Serum Levels of Infliximab Biosimilar in a Child Delivered From a Mother Treated for Ulcerative Colitis2022

    • Author(s)
      Ami Kawamoto, Toshimitsu Fujii, Ryuji Mitani, Yasuhiro Suzuki, Tsunehito Yauchi, Ryuichi Okamoto
    • Journal Title

      Inflamm Bowel Dis.

      Volume: 28 Issue: 8 Pages: 1298-1299

    • DOI

      10.1093/ibd/izac111

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Serum Leucine-Rich α2 Glycoprotein: A Novel Biomarker for Transmural Inflammation in Crohn's Disease2022

    • Author(s)
      Kento Takenaka, Yoshio Kitazume, Ami Kawamoto, Toshimitsu Fujii, Yumi Udagawa, Ryosuke Wanatabe, Hiromichi Shimizu, Shuji Hibiya, Masakazu Nagahori, Kazuo Ohtsuka, Hiroyuki Sato, Akihiro Hirakawa, Mamoru Watanabe, Ryuichi Okamoto
    • Journal Title

      Am J Gastroenterol.

      Volume: - Issue: 6 Pages: 1028-1035

    • DOI

      10.14309/ajg.0000000000002127

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Deep neural network for video colonoscopy of ulcerative colitis: a cross-sectional study2022

    • Author(s)
      Kento Takenaka, Toshimitsu Fujii, Ami Kawamoto, Kohei Suzuki, Hiromichi Shimizu, Chiaki Maeyashiki, Osamu Yamaji, Maiko Motobayashi, Akira Igarashi, Ryoichi Hanazawa, Shuji Hibiya, Masakazu Nagahori, Eiko Saito, Ryuichi Okamoto, Kazuo Ohtsuka, Mamoru Watanabe
    • Journal Title

      Lancet Gastroenterol Hepatol

      Volume: 7 Issue: 3 Pages: 230-237

    • DOI

      10.1016/s2468-1253(21)00372-1

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Serum leucine-rich α-2 glycoprotein; a novel biomarker for small bowel mucosal activity in Crohn’s Disease.2021

    • Author(s)
      Kawamoto T, Takenaka K, Hibiya S, Ohtsuka K, Okamoto R, Watanabe M
    • Journal Title

      Clin Gastroenterol Hepatol.

      Volume: 20 Issue: 5 Pages: e1196-e1200

    • DOI

      10.1016/j.cgh.2021.06.036

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pancolonic endoscopic and histologic evaluation for relapse prediction in patients with ulcerative colitis in clinical remission2021

    • Author(s)
      Kaneshiro M, Takenaka K, Suzuki K, Fujii T, Hibiya S, Kawamoto A, Motobayashi M, Shimizu H, Nagahori M, Saito E, Okamoto R, Ohtsuka K, Watanabe M.
    • Journal Title

      Aliment Pharmacol Ther.

      Volume: 53(8) Issue: 8 Pages: 900-907

    • DOI

      10.1111/apt.16310

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Higher concentrations of cytokine blockers are needed to obtain small bowel mucosal healing during maintenance therapy in Crohn's disease2021

    • Author(s)
      Kento Takenaka, Ami Kawamoto, Shuji Hibiya, Kohei Suzuki, Toshimitsu Fujii, Maiko Motobayashi, Hiromichi Shimizu, Masakazu Nagahori, Eiko Saito, Ryuichi Okamoto, Mamoru Watanabe, Kazuo Ohtsuka
    • Journal Title

      Aliment Pharmacol Ther

      Volume: 54 Issue: 8 Pages: 1052-1060

    • DOI

      10.1111/apt.16551

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Intravenous tacrolimus is a superior induction therapy for acute severe ulcerative colitis compared to oral tacrolimus2021

    • Author(s)
      Hiromichi Shimizu, Toshimitsu Fujii, Kenji Kinoshita, Ami Kawamoto, Shuji Hibiya, Kento Takenaka, Eiko Saito, Masakazu Nagahori, Kazuo Ohtsuka, Mamoru Watanabe, Ryuichi Okamoto
    • Journal Title

      BMC Gastroenterol

      Volume: 21 Issue: 1 Pages: 494-494

    • DOI

      10.1186/s12876-021-02043-6

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Novel Biomarkers for Small Intestinal Crohn’s Disease2022

    • Author(s)
      Ami Kawamoto
    • Organizer
      United European Gastroenterology Week
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] クローン病の小腸病変モニタリングにおけるバイオマーカーの比較2022

    • Author(s)
      河本亜美
    • Organizer
      日本消化器関連学会機構(JDDW)
    • Related Report
      2022 Annual Research Report
  • [Presentation] クローン病の小腸病変モニタリングにおける新規バイオマーカーの有効性2022

    • Author(s)
      河本亜美
    • Organizer
      日本炎症性腸疾患学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] クローン病の活動性小腸病変に対するLRGの有効性2022

    • Author(s)
      河本亜美、竹中健人、日比谷秀爾、藤井俊光、齊藤詠子、清水寛路、本林麻衣子、長堀正和、大塚和朗、渡辺守、岡本隆一
    • Organizer
      GI Week 2022
    • Related Report
      2021 Research-status Report
  • [Presentation] クローン病における小腸潰瘍に対するLRGの有効性2021

    • Author(s)
      河本亜美、竹中健人、岡本隆一
    • Organizer
      JDDW 2021
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2024-01-30  

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