• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Etiological and Prognostic Studies of Biliary Atresia by Quantitative Analysis of Maternal Chimeric Cells

Research Project

Project/Area Number 20K17588
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55010:General surgery and pediatric surgery-related
Research InstitutionUniversity of Miyazaki

Principal Investigator

Masuya Ryuta  宮崎大学, 医学部, 助教 (90448572)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords胆道閉鎖症 / 母親由来キメラ細胞 / 移植片対宿主病 / maternal microchimerism / 肝門部空腸吻合術 / リアルタイムPCR
Outline of Research at the Start

本研究は3年間で末梢静脈血中の母親由来細胞の量および性状、BA 発症との相関の有無を明
らかにする。
1 ) BA 患児および非 BA 患児静脈血中における母親由来キメラ細胞の定量的評価
2 ) BA 患児および非 BA 患児静脈血における母親由来キメラ細胞の性状の評価
3 ) BA 患児および非 BA 患児と母親との免疫学的寛容の評価
4 ) BA 発症の有無とキメラ細胞量、免疫学的寛容の程度との相関の評価

Outline of Final Research Achievements

The etiology of biliary atresia (BA) is unknown, but maternal-fetal immune interactions have been proposed as a possible etiology of BA. However, whether maternal chimeric (MC) cells circulate in the peripheral blood and the role of MC cells in the etiology of BA remain unclear. We have classified postoperative patients with BA into good and poor prognosis groups and quantified the DNA of maternal chimeric cells in the peripheral blood using qPCR.
We found that significantly more MC cells were detected in the peripheral blood mononuclear cells of the poor prognosis group, and the detection of maternal-derived cells in the peripheral blood mononuclear cells was significantly associated with poor prognosis.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果から胎児期に胎盤を介して胎児血液中に流入した母親由来細胞が胆道閉鎖症患者の末梢血に残留し、胆道閉鎖症の予後に影響を与えることが明らかになった。
胆道閉鎖症は成人期までに反芻が肝移植に至る予後不良かつ原因不明の難病で、本邦では1万出生に1人の割合で発症する。
胆道閉鎖症の発症及び病状進行における母親由来細胞の役割を今後更に究明していくことによって、発症や病状進行を予防する治療法を開発することができる。

Report

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

    (12 results)

All 2022 2021

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (6 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Circulating maternal chimeric cells have an impact on the outcome of biliary atresia2022

    • Author(s)
      Masuya Ryuta、Muraji Toshihiro、Kanaan Sami B.、Harumatsu Toshio、Muto Mitsuru、Toma Miki、Yanai Toshihiro、Stevens Anne M.、Nelson J. Lee、Nakame Kazuhiko、Nanashima Atsushi、Ieiri Satoshi
    • Journal Title

      Frontiers in Pediatrics

      Volume: 10 Pages: 1007927-1007927

    • DOI

      10.3389/fped.2022.1007927

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] New insights in understanding biliary atresia from the perspectives on maternal microchimerism2022

    • Author(s)
      Muraji Toshihiro、Masuya Ryuta、Harumatsu Toshio、Kawano Takafumi、Muto Mitsuru、Ieiri Satoshi
    • Journal Title

      Frontiers in Pediatrics

      Volume: 10 Pages: 1007987-1007987

    • DOI

      10.3389/fped.2022.1007987

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Biliary atresia: Graft-versus-host disease with maternal microchimerism as an etiopathogenesis2022

    • Author(s)
      Masuya Ryuta、Muraji Toshihiro、Harumatsu Toshio、Muto Mitsuru、Nakame Kazuhiko、Nanashima Atsushi、Ieiri Satoshi
    • Journal Title

      Transfusion and Apheresis Science

      Volume: - Issue: 2 Pages: 103410-103410

    • DOI

      10.1016/j.transci.2022.103410

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Using indocyanine green fluorescence in laparoscopic surgery to identify and preserve rare branching of the right hepatic artery in pediatric congenital biliary dilatation2022

    • Author(s)
      Masuya Ryuta、Matsukubo Makoto、Nakame Kazuhiko、Kai Kengo、Hamada Takeomi、Yano Koichi、Imamura Naoya、Hiyoshi Masahide、Nanashima Atsushi、Ieiri Satoshi
    • Journal Title

      Surgery Today

      Volume: 52 Issue: 10 Pages: 1510-1513

    • DOI

      10.1007/s00595-022-02516-5

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Impact of the Number of Board-Certified Pediatric Surgeons per Pediatric Population on the Outcomes of Laparoscopic Fundoplication for Neurologically Impaired Patients2022

    • Author(s)
      Masuya Ryuta、Muto Mitsuru、Nakame Kazuhiko、Murakami Masakazu、Sugita Koshiro、Yano Keisuke、Onishi Shun、Harumatsu Toshio、Yamada Koji、Yamada Waka、Matsukubo Makoto、Kaji Tatsuru、Nanashima Atsushi、Ieiri Satoshi
    • Journal Title

      Journal of Laparoendoscopic & Advanced Surgical Techniques

      Volume: 32 Issue: 5 Pages: 571-575

    • DOI

      10.1089/lap.2021.0713

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Laparoscopic dome resection for pediatric nonparasitic huge splenic cyst safely performed using indocyanine green fluorescence and percutaneous needle grasper2022

    • Author(s)
      Masuya Ryuta、Nakame Kazuhiko、Tahira Kosei、Kai Kengo、Hamada Takeomi、Yano Koichi、Imamura Naoya、Hiyoshi Masahide、Nanashima Atsushi、Ieiri Satoshi
    • Journal Title

      Asian Journal of Endoscopic Surgery

      Volume: 15 Issue: 3 Pages: 693-696

    • DOI

      10.1111/ases.13052

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Presentation] CIRCULATING MATERNAL CHIMERIC CELLS HAVE AN IMPACT ON THE OUTCOME OF BILIARY ATRESIA2022

    • Author(s)
      Ryuta Masuya, Toshihiro Muraji, Sami Kanaan, Toshio Harumatsu, Mitsuru Mutoh, Miki Toma, Toshihiro Yanai, Anne Stevens, J Nelson, Atsushi Nanashima, Saoshi Ieiri
    • Organizer
      35th International Symposium on Pediatric Surgical Research.
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] CLINICAL OUTCOME AND NEUROLOGICAL DEVELOPMENT OF PATIENTS WITH BILIARY ATRESIA ASSOCIATED WITH BLEEDING TENDENCY: A SINGLE INSTITUTION EXPERIENCE2022

    • Author(s)
      Ryuta Masuya, Toshihiro Muraji, Toshio Harumatsu, Seiro Machigashira, Masakazu Murakami, Koshiro Sugita, Keisuke Yano, Shun Onishi, Koji Yamada, Waka Yamada, Takafumi Kawano, Mitsuru Muto, Kazuhiko Nakame, Tatsuru Kaji, Atsushi Nanashima, Satoshi Ieiri
    • Organizer
      The 26th Congress Of The Asian Association Of Pediatric Surgeons.
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 胆道閉鎖症術後患児における末梢血中の母親由来キメラ細胞検出と予後との相関の検討2022

    • Author(s)
      桝屋 隆太, 連 利博, Sami B. Kanaan, 春松 敏夫, 武藤 充, 東間 未来, 矢内 俊裕, Anne M Stevens, J Lee Nelson, 中目 和彦, 七島 篤志, 家入 里志
    • Organizer
      第49回日本胆道閉鎖症研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 術前に判明した右肝動脈の破格を伴う先天性胆道拡張症に対する腹腔鏡手術の工夫2022

    • Author(s)
      桝屋 隆太,中目 和彦, 三好 きな, 松久保 眞, 七島 篤志, 家入 里志
    • Organizer
      第59回日本小児外科学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 術前に判明した右肝動脈の破格を伴う先天性胆道拡張症に対する腹腔鏡手術の工夫2022

    • Author(s)
      桝屋 隆太, 中目 和彦, 三好 きな, 松久保 眞, 土持 有貴, 濱田 剛臣, 今村 直哉, 旭吉 雅秀, 七島 篤志, 家入 里志
    • Organizer
      第45回日本膵・胆管合流異常研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 胆道閉鎖症の病因論としての母親キメリズム関連GvHD仮説―臍帯血および胎盤病理に関する共同研究の提案―2021

    • Author(s)
      桝屋隆太、連利博、春松敏夫、中目和彦、家入里志
    • Organizer
      第57回日本周産期・新生児医学会
    • Related Report
      2021 Research-status Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi