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Lipid mediators regulate inflammatory bowel diseases via lymphangiogenesis

Research Project

Project/Area Number 20K17702
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionKitasato University

Principal Investigator

KOJO KEN  北里大学, 医学部, 助教 (20525414)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords炎症性腸疾患 / プロスタグランジン / リンパ管新生 / リンパ管 / 潰瘍性大腸炎 / 修復
Outline of Research at the Start

脂質メディエーターであるプロスタグランジン(PG)E2がマクロファージのPGE受容体を介してリンパ管新生を増強させて創傷治癒を促進する。また組織修復に必須であるマクロファージ形質転換にPGE2が関与する。そこで本研究では腸炎回復期におけるリンパ管新生の機能的役割とプロスタグランジン(PG)を介した免疫細胞による組織修復制御機構を明らかにすることを目的とする。脂質メディエーターを介したリンパ管新生の分子基盤と腸粘膜修復作用における意義が解明されることにより、炎症性腸疾患の新しい治療戦略を目指した基盤研究を展開する。

Outline of Final Research Achievements

Using a model of ulcerative colitis, we investigated underlying mechanisms by which lymphangiogenesis is involved in tissue repair after acute intestinal inflammation. Administration of a lymphatic endothelial receptor VEGFR3 inhibitor exacerbated colitis as well as suppressed lymphangiogenesis. Prostaglandin E2 (PGE2) receptor subtype EP4 signaling promoted inflammatory resolution and tissue repair by enhancing drainage function through the formation of new and expanded lymphatic vessels by accumulating macrophages. Our results suggest that activation of EP4 receptor signaling during the repair phase of ulcerative colitis may lead to treatment of ulcerative colitis remission induction.

Academic Significance and Societal Importance of the Research Achievements

炎症性腸疾患を制御するには炎症だけでなく、粘膜修復も考慮しなければならないことが本研究からみえてきた。この修復には新生リンパ管形成とそのドレナージ機能を活用することが重要である。本研究において、炎症性腸疾患における組織修復においてリンパ管新生の果たす意義と制御機構の解明が寛解導入治療につながる可能性がある。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (8 results)

All 2023 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (2 results)

  • [Journal Article] Short-term outcomes of robot-assisted versus conventional laparoscopic surgery for mid and low rectal cancer after neoadjuvant chemoradiotherapy: a propensity score-matched analysis.2023

    • Author(s)
      Yamanashi T, Miura H, Tanaka T, Watanabe A, Yokoi K, Kojo K, Niihara M, Yamashita K, Sato T, Kumamoto Y, Hiki N, Naitoh T
    • Journal Title

      J Robot Surg

      Volume: - Issue: 3 Pages: 959-969

    • DOI

      10.1007/s11701-022-01498-3

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comparison of short-term outcomes of robotic-assisted and conventional laparoscopic surgery for rectal cancer: A propensity score-matched analysis2022

    • Author(s)
      Yamanashi T, Miura H, Tanaka T, Watanabe A, Goto T, Yokoi K, Kojo K, Niihara M, Hosoda K, Kaizu T, Yamashita K, Sato T, Kumamoto Y, Hiki N, Naitoh T
    • Journal Title

      Asian J Endosc Surg

      Volume: 15 Issue: 4 Pages: 753-764

    • DOI

      10.1111/ases.13075

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Recovery of Liver Sinusoidal Endothelial Cells Following Monocrotaline-induced Liver Injury2021

    • Author(s)
      Otaka F, Ito Y, Goto T, Kojo K, Tanabe M, Hosono K, Majima M, Koizumi W, Amano H
    • Journal Title

      In Vivo

      Volume: 35 Issue: 5 Pages: 2577-2587

    • DOI

      10.21873/invivo.12540

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Prostaglandin E receptor EP4 stimulates lymphangiogenesis to promote mucosal healing during DSS-induced colitis2020

    • Author(s)
      Hosono Kanako、Kojo Ken、Narumiya Shuh、Majima Masataka、Ito Yoshiya
    • Journal Title

      Biomedicine & Pharmacotherapy

      Volume: 128 Pages: 110264-110264

    • DOI

      10.1016/j.biopha.2020.110264

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Lymphangiogenesis and accumulation of reparative macrophages contribute to liver repair after hepatic ischemia?reperfusion injury2020

    • Author(s)
      Nakamoto Shuji、Ito Yoshiya、Nishizawa Nobuyuki、Goto Takuya、Kojo Ken、Kumamoto Yusuke、Watanabe Masahiko、Majima Masataka
    • Journal Title

      Angiogenesis

      Volume: 23 Issue: 3 Pages: 395-410

    • DOI

      10.1007/s10456-020-09718-w

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] EP3 signaling in dendritic cells promotes liver repair by inducing IL-13-mediated macrophage differentiation in mice.2020

    • Author(s)
      Nakamoto S, Ito Y, Nishizawa N, Goto T, Kojo K, Kumamoto Y, Watanabe M, Narumiya S, Majima M.
    • Journal Title

      FASEB J

      Volume: 34 Issue: 4 Pages: 5610-5627

    • DOI

      10.1096/fj.201901955r

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 進行直腸癌に対するWatch-and-wait approachに内視鏡所見は有用か~術前化学放射線治療後のHigh risk所見~2021

    • Author(s)
      古城 憲 佐藤 武郎, 三浦 啓寿, 横井 圭吾, 田中 俊道, 細田 圭, 海津 貴史, 田島 弘, 仙石 紀彦, 加藤 弘, 山下 継史, 田中 潔, 比企 直樹, 隈元 雄介, 三階 貴史, 内藤 剛
    • Organizer
      第121回日本外科学会定期学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 樹状細胞のEP3シグナル伝達はマウスの虚血再灌流障害後の肝修復を促進する2020

    • Author(s)
      中本 修司、伊藤 義也、後藤 卓也、西澤 伸恭、古城 憲、隈元 雄介、馬嶋 正隆
    • Organizer
      第93回日本薬理学会年会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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