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Investigation of an optimal environment for the proliferation of mature hepatocytes toward the rescue of acute liver failure patients

Research Project

Project/Area Number 19K08475
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionIwate Medical University

Principal Investigator

Takikawa Yasuhiro  岩手医科大学, 医学部, 教授 (50254751)

Co-Investigator(Kenkyū-buntansha) 鈴木 悠地  岩手医科大学, 医学部, 特任講師 (00779332)
柿坂 啓介  岩手医科大学, 医学部, 講師 (40583563)
王 挺  岩手医科大学, 医歯薬総合研究所, 特任講師 (70416171)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords急性肝不全 / 肝再生 / サイトカイン / 肝再生不全 / 細胆管反応 / 血管内皮細胞増殖因子 / 類洞内皮
Outline of Research at the Start

正常な肝臓は旺盛な再生能力を持つにもかかわらず,重篤な障害のある肝臓は再生力が不十分でそのために救命できない場合が多くあります.応募者はこれまで急性肝不全の内科的救命率向上のため,血液浄化により肝の至適再生環境を達成することを最終目的として,臨床的に人工肝補助機器の開発を行う一方で,基礎的に肝前駆細胞の増殖機序の研究を行ってきました.その結果を踏まえて本研究では,生体内のIL-8という物質を中心にして、血液浄化の標的分子の探索を行い、臨床的に達成可能な肝細胞の至適増殖環境を明らかにします.

Outline of Final Research Achievements

The survival rate of acute liver failure (ALF) patients still remains around 30% without liver transplantation. The main reason for that is impaired liver regeneration. This study aimed to increase the survival rate by improving the liver-regenerating environment in ALF patients using the blood-purifying system. This study revealed that IL-8 and other inflammatory cytokines disturbed hepatocyte proliferation and differentiation and that the bile-ductular reaction, a feature of impaired liver regeneration, depends on the capillary proliferation through VEGF signal.

Academic Significance and Societal Importance of the Research Achievements

当該研究の結果、急性肝不全における肝再生不全を克服するための治療標的物質がIL-8をはじめとした炎症性サイトカインであることが明らかになった。一方で、肝細胞脱落に対する防御反応と考えられている細胆管反応を血管新生が強く支えていることが判明した。当該研究の成果は、肝再生妨害因子の同定のみならず再生促進機構の一部を解明したことから、肝再生不全克服のための臨床的な方向性と標的を示したと言える。

Report

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

    (17 results)

All 2022 2021 2020 2019 2018

All Journal Article (10 results) (of which Peer Reviewed: 10 results,  Open Access: 8 results) Presentation (7 results) (of which Invited: 1 results)

  • [Journal Article] Referral system has a diminished difference in the risk for hepatic encephalopathy development among each etiology in patients with acute liver injury.2022

    • Author(s)
      Kakisaka K, Suzuki Y, Takahashi F, Takikawa Y.
    • Journal Title

      Hepatol Res

      Volume: 52 Issue: 4 Pages: 401-410

    • DOI

      10.1111/hepr.13744

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 肝障害時における胆管増生と血管新生の3次元的構造解析2022

    • Author(s)
      阿部弘昭, 鈴木悠地, 村嶋亜紀,柿坂啓介, 宮坂昭生, 佐々木登希夫, 木村英二,人見次郎, 滝川康裕
    • Journal Title

      岩手医学雑誌

      Volume: -

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Serum alpha- fetoprotein increases prior to fibrosis resolution in a patient with acute liver failure.2021

    • Author(s)
      Kakisaka K, Suzuki Y, Abe H, Eto H, Kanazawa J, Takikawa Y
    • Journal Title

      Clin J Gastroenterol

      Volume: 14 Issue: 5 Pages: 1470-1475

    • DOI

      10.1007/s12328-021-01467-7

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tc-99m GSA scintigraphy within the first 3 days after admission as an early predictor of outcome in severe acute liver injury.2021

    • Author(s)
      Suzuki Y, Kakisaka K, Sato T, Mikami R, Abe H, Sasaki T, Takikawa Y.
    • Journal Title

      Sci Rep

      Volume: 11 Issue: 1 Pages: 12518-12518

    • DOI

      10.1038/s41598-021-92058-6

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Contrast-enhanced ultrasonography-based hepatic perfusion for early prediction of prognosis in acute liver failure2020

    • Author(s)
      Kuroda H, Abe T, Fujiwara Y, Nagasawa T, Suzuki Y, Kakisaka K, Takikawa Y.
    • Journal Title

      Hepatology

      Volume: 5 Issue: 6 Pages: 2455-2467

    • DOI

      10.1002/hep.31615

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Multicenter study on the consciousness‐regaining effect of a newly developed artificial liver support system in acute liver failure: An on‐line continuous hemodiafiltration system2020

    • Author(s)
      Takikawa Yasuhiro、Kakisaka Keisuke、Suzuki Yuji、Ido Akio、Shimamura Tsuyoshi、Nishida Osamu、Oda Shigeto、Shimosegawa Tooru
    • Journal Title

      Hepatology Research

      Volume: 51 Issue: 2 Pages: 216-226

    • DOI

      10.1111/hepr.13557

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Early identification using the referral system prolonged the time to onset for hepatic encephalopathy after diagnosing severe acute liver injury2020

    • Author(s)
      Kakisaka Keisuke、Suzuki Yuji、Abe Hiroaki、Watanabe Takuya、Yusa Kenji、Sato Hiroki、Takikawa Yasuhiro
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1

    • DOI

      10.1038/s41598-020-74466-2

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Next-generation sequencing analysis of the human T-cell and B-cell receptor repertoire diversity before and after2019

    • Author(s)
      Sasaki T, Suzuki Y, Kakisaka K, Wang T, Ishida K, Suzuki A, Abe H, Sugai T, Takikawa Y
    • Journal Title

      FEBS Open Bio

      Volume: 0 Issue: 12 Pages: 0-0

    • DOI

      10.1002/2211-5463.12750

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Unfavorable prognosis of patients with acute liver injury due to drug-induced liver injury and acute exacerbation of hepatitis B virus infection.2019

    • Author(s)
      Kakisaka K, Suzuki Y, Jinnouchi Y, Kanazawa J, Sasaki T, Yonezawa T, Yoshida Y, Kuroda H, Takikawa Y.
    • Journal Title

      Hepatol Res.

      Volume: 49 Issue: 11 Pages: 1286-1293

    • DOI

      10.1111/hepr.13397

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] L-carnitine prevents ammonia-induced cytotoxicity and disturbances in intracellular amino acid levels in human astrocytes2018

    • Author(s)
      Wang Ting、Suzuki Kazuyuki、Kakisaka Keisuke、Onodera Mio、Sawara Kei、Takikawa Yasuhiro
    • Journal Title

      Journal of Gastroenterology and Hepatology

      Volume: - Issue: 7 Pages: 1249-1255

    • DOI

      10.1111/jgh.14497

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 肝移植の現状と課題 肝移植医療における急性肝障害患者の施設間共同管理の効果2021

    • Author(s)
      柿坂 啓介, 鈴木 悠地, 滝川 康裕
    • Organizer
      第57回日本肝臓学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 肝移植の現状と課題 重症アルコール性肝炎に対する早期生体肝移植の適応と倫理的評価2021

    • Author(s)
      鈴木 悠地, 柿坂 啓介, 滝川 康裕
    • Organizer
      第57回日本肝臓学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 消化器領域の救急医療、急性肝不全 急性肝不全の予後不良となる病態解明の試み2021

    • Author(s)
      柿坂 啓介, 鈴木 悠地, 滝川 康裕
    • Organizer
      第107回日本消化器病学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] IL-8は成熟肝細胞において胆管上皮細胞の表現型を誘導する.2019

    • Author(s)
      佐々木登希夫,鈴木悠地,王挺,柿坂啓介,滝川康裕.
    • Organizer
      第45回日本急性肝不全研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] 急性肝障害の予後不良要因としての薬物性肝障害の特徴2019

    • Author(s)
      柿坂啓介、鈴木悠地、滝川康裕.
    • Organizer
      第23回肝臓学会大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 病診連携による急性肝不全の内科治療向上の試みと今後の展望2019

    • Author(s)
      柿坂啓介、鈴木悠地、滝川康裕.
    • Organizer
      第55回日本腹部救急医学会総会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 昏睡型急性肝不全に対するOn-line CHDFの昏睡覚醒効果に関する前向き国内多施設共同研究結果報告2019

    • Author(s)
      鈴木悠地、柿坂啓介、滝川康裕.
    • Organizer
      第55回日本肝臓学会総会
    • Related Report
      2019 Research-status Report

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

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