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

A new liver regeneration molecular mechanism involving hepatic stellate cells, Kupffer cells, and glucose-regulated protein 78 as a new hepatotrophic factor

Research Project

Project/Area Number 19K09189
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionGunma University

Principal Investigator

Harimoto Norifumi  群馬大学, 医学部附属病院, 准教授 (00419582)

Co-Investigator(Kenkyū-buntansha) 五十嵐 隆通  群馬大学, 医学部附属病院, 助教 (20648472)
新木 健一郎  群馬大学, 大学院医学系研究科, 助教 (60431706)
渡辺 亮  群馬大学, 医学部附属病院, 助教 (60738847)
調 憲  群馬大学, 大学院医学系研究科, 教授 (70264025)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords肝細胞 / 肝再生 / 肝臓外科
Outline of Research at the Start

われわれば本研究によって肝再生におけるM2BPGiの動態と生理活性について検討し、肝再生におけるM2BPGiを介した分子機序を明らかにすることで、これまでにない新たな肝切除後、肝再生の分子機序を解明する。さらには拡大肝切除において新規の肝再生因子を投与することで再生促進を図り、拡大肝切除の安全性を向上させることを最終的な目的とする。肝星細胞から分泌されるWFA-M2BPが線維化のみならず肝再生にかかわる発想は極めて独創的である。

Outline of Final Research Achievements

We examined the effect of M2BPGi on human hepatocytes and KCs, and explored secretory factors from M2BPGi-activated KCs using proteomics. Furthermore, the effect on liver regeneration of glucose-regulated protein 78 (GRP78) as one of the M2BPGi-related secreted proteins was examined in vitro and in murine hepatectomy models.
Results: Although M2BPGi had no hepatocyte-promoting effect, M2BPGi promoted the production of GRP78 in KCs. The KC-driven GRP78 promoted hepatocyte proliferation. GRP78 administration facilitated liver regeneration after 70% hepatectomy and increased the survival rate after 90% hepatectomy in mice.
Conclusions: The M2BPGi-activated KCs secrete GRP78, which facilitates liver regeneration and improves the survival in a lethal mice model. Our data suggest that the new hepatotrophic factor GRP78 may be a promising therapeutic tool for lethal liver failure.

Academic Significance and Societal Importance of the Research Achievements

今回の検討にて新たな肝再生因子GRP78を同定し、その肝再生におけるメカニズムを解明した。この肝再生の芽蟹図はこれまで報告されたことがなく、新しい肝栄養因子GRP78が致命的な肝不全の有望な治療ツールである可能性があることを示唆した。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (5 results)

All 2022 2021 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (4 results)

  • [Journal Article] A New Liver-Regeneration Molecular Mechanism Involving Hepatic Stellate Cells, Kupffer Cells, and Glucose-Regulated Protein 78 as a New Hepatotrophic Factor2022

    • Author(s)
      Hagiwara K, Harimoto N, et al
    • Journal Title

      Journal of Hepato-Biliary-Pancreatic Sciences

      Volume: -

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] 急性肝不全治療における新たな肝再生因子の可能性2021

    • Author(s)
      萩原慶、播本憲史ら
    • Organizer
      第47回日本急性肝不全研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 規肝線維化血清マーカーの研究により見つかった新たな肝再生因子の発見と展開2020

    • Author(s)
      萩原慶、播本憲史ら
    • Organizer
      第120回日本外科学会定期学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] 新規肝線維化血清マーカーの研究により発見された新たな肝再生因子2020

    • Author(s)
      萩原慶、播本憲史ら
    • Organizer
      第75回日本消化器外科学会総会
    • Related Report
      2020 Research-status Report
  • [Presentation] 新規肝線維化血清マーカーの研究から見えてきた新たな肝再生因子の発見と展開2019

    • Author(s)
      萩原慶、播本憲史ら
    • Organizer
      第81回日本臨床外科学会
    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi