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The role of fibulin-1 in intimal thickening of the ductus arteriosus

Research Project

Project/Area Number 17K16276
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Pediatrics
Research InstitutionYokohama City University

Principal Investigator

Ito Satoko  横浜市立大学, 医学研究科, 共同研究員 (80784652)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords動脈管 / 内膜肥厚 / フィブリン1 / バーシカン / ヒアルロン酸 / Fibulin-1 / 動脈管リモデリング / 細胞遊走
Outline of Final Research Achievements

Patent ductus arteriosus (PDA) induces neonatal heart failure. Premature infants with PDA shows poor prognosis. Intimal thickening (IT) is essential for the DA closure. I identified Fbln1 as a candidate gene for IT. I demonstrated that fibulin-1 is induced via plostaglandineE-EP4receptor signaling pathway in DA smooth muscle cells (SMCs). Fibulin-1 plays a role in integration of multiple extracellular matrices (ECM). Among Fbln1-dinding ECM, versican was known to promote cell migration. Therefore, I hypothesized that fibulin-1-versican complex may induce DA IT. In this study, I demonstrated the molecular mechanism by which induces fibulin-1 expression in DASMCs, and the role of fibulin-1-versican complex in DASMC migration and IT of the DA.

Academic Significance and Societal Importance of the Research Achievements

動脈管閉鎖は動脈管収縮と内膜肥厚よりなるが、未熟児動脈管開存症の内科的治療は、この40年間、血管収縮を促す作用のあるシクロオキシゲナーゼのみである。超未熟児ではシクロオキシゲナーゼ阻害薬への抵抗例が30%と極めて多く、循環不全で命を落とす症例が多い。近年本邦でも他の先進諸国と同様、未熟児の出生率は約10%と増加し、動脈管開存症に対する新たな治療法の開発は急務である。本研究により動脈管内膜肥厚形成に重要な役割を果たす分子としてフィブリン1が同定された。フィブリン1の誘導により、非侵襲的な新規治療が可能となる。本研究の成果は未熟児の生命予後、発達予後改善に大きく貢献すると考えられる。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (8 results)

All 2019 2018 2017

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

  • [Journal Article] Tissue-type plasminogen activator contributes to remodeling of the rat ductus arteriosus.2018

    • Author(s)
      Saito J, Yokoyama U, Nicho N, Zheng YW, Ichikawa Y, Ito S, Umemura M, Fujita T, Ito S, Taniguchi H, Asou T, Masuda M, Ishikawa Y.
    • Journal Title

      PLoS One

      Volume: 13(1) Issue: 1 Pages: e0190871-e0190871

    • DOI

      10.1371/journal.pone.0190871

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Attenuation of ductus arteriosus intimal thickening in preterm sheep twins compared with singletons2017

    • Author(s)
      Ito Satoko、Yokoyama Utako、Saito Junichi、Sato Shinichi、Usuda Haruo、Watanabe Shimpei、Kitanishi Ryuta、Miura Yuichiro、Saito Masatoshi、Hanita Takushi、Matsuda Tadashi、Ishikawa Yoshihiro
    • Journal Title

      The Journal of Physiological Sciences

      Volume: 67 Issue: 6 Pages: 723-729

    • DOI

      10.1007/s12576-017-0565-5

    • NAID

      40021363517

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Coupling of DASMC-derived fibulin-1 to endothelial cell-derived versican promotes intimal thickening of the ductus arteriosus2019

    • Author(s)
      伊藤智子
    • Organizer
      日本結合組織学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 内皮細胞が誘導する一方向性平滑筋細胞遊走が動脈管内膜肥厚を形成する2019

    • Author(s)
      伊藤智子
    • Organizer
      日本小児循環器学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Prostaglandin E-EP4 signaling-mediated fibulin-1 integrates extracellular matrices to promote smooth muscle cell migration of the ductus arteriosus2018

    • Author(s)
      Satoko Ito, Utako Yokoyama, Junichi Saito, Munetaka Masuda, Toshihide Asou, Yoshihiro Ishikawa
    • Organizer
      Weinstein 2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fibulin-1 の動脈管内膜肥厚形成機序2017

    • Author(s)
      伊藤智子, 齋藤純一, 横山詩子,石川義弘
    • Organizer
      第53回日本新生児成育医学会学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] Prostaglandin E-EP4-mediated fibulin-1 up-regulation plays a role in intimal thickening of the ductus arteriosus.2017

    • Author(s)
      Ito S, Yokoyama U, Saito J, Masuda M, Asou T, Ishikawa Y.
    • Organizer
      The 8th TAKAO International symposium
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 多胎妊娠では動脈管内膜肥厚が抑制される2017

    • Author(s)
      伊藤智子, 横山詩子, 齋藤純一, 佐藤信一, 臼田治夫, 渡邊真平, 北西龍太, 三浦雄一郎, 埴田卓志, 松田直, 石川義弘
    • Organizer
      第62回日本新生児成育医学会学術集会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2020-03-30  

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