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The role of p62/SQSTM1 in the hepatocytes against NASH

Research Project

Project/Area Number 23K18321
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 55:Surgery of the organs maintaining homeostasis and related fields
Research InstitutionTokyo Women's Medical University

Principal Investigator

Ariizumi Shun-ichi  東京女子医科大学, 医学部, 准教授 (40277158)

Co-Investigator(Kenkyū-buntansha) 田中 誠也  東京海洋大学, 学術研究院, 助教 (40897906)
徳重 克年  東京女子医科大学, 医学部, 教授 (60188729)
岡田 浩介  筑波大学, 医学医療系, 准教授 (80757526)
正田 純一  筑波大学, 医学医療系, 客員教授 (90241827)
Project Period (FY) 2023-06-30 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2024: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2023: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords脂肪性肝疾患/肝炎 / p62 / autophagy / 脂肪性肝疾患 / mitophagy / p62/Sqstm1 / ミトコンドリア / NASH / 脂肪酸代謝 / 肝癌 / 脂肪酸
Outline of Research at the Start

p62は,その多彩な機能故にNASH進展における決定的な役割なお不明である.本研究はこの疑問を明らかにするために,p62遺伝子改変マウスに加え,メタボローム解析やRNAシークエンシングによる全遺伝子検索など,広範囲の解析から先入観なしに標的分子もしくは機能を絞り込む,探索的側面が強い研究である.本研究によってp62の真の機能が明らかになるとき,新たなNASH発症進展機構も判明することが期待され,それはp62を賦活・維持する新しい創薬の可能性につながる.それが,本研究の挑戦的研究としての意義である.

Outline of Final Research Achievements

The aim of this research is to elucidate the protective role of p62 against the development of steatohepatitis from both basic and clinical medicine. The hepatocytes specific conditional p62 knock-out or knock-in (rescued) mice were analyzed in steatohepatitis development. The hepatocyte specific p62 knock-in mice were suppressed the development of steatohepatitis with severe hepatic inflammation and fibrosis compared with p62 whole body knock-out mice and hepatocyte specific p62 knock-out mice.Moreover, p62 immunohistochemical analyses using clinical liver specimens from 50 hepatocellular carcinoma developed from NASH, 49 HCCs developed from chronic viral hepatitis C, and 48 liver metastases of colorectal cancer from both tumorous and non-tumorous areas which were collected by hepatic resection surgery showed that p62 immunohistochemical expression was correlated with liver inflammation and fibrosis.
p62 of hepatocytes could be a new target for the treatment of steatohepatitis.

Academic Significance and Societal Importance of the Research Achievements

現在,脂肪性肝炎の有効な治療は,食事運動療法のみであり,その進行を阻止するための薬物治療は確立していない.本研究は,肝細胞のp62が脂肪性肝炎の防御に重要であること,ヒトでも脂肪性肝炎の進展に関連することを示した.これらの結果は,特に肝細胞のp62の発現が肝脂肪化のみならず肝炎症線維化をもコントロールし得る可能性を示唆した.脂肪性肝炎の今後のメカニズム解明と薬物治療開発のうえで,本研究の意義は大きいと考えられる.

Report

(3 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • Research Products

    (14 results)

All 2024 2023

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (11 results)

  • [Journal Article] Oncological Resectability Criteria for Hepatocellular Carcinoma in the Era of Novel Systemic Therapies: The Japan Liver Cancer Association and Japanese Society of Hepato-Biliary-Pancreatic Surgery Expert Consensus Statement 20232024

    • Author(s)
      Akahoshi K, Shindoh J, Tanabe M, Ariizumi S, Eguchi S, Okamura Y, Kaibori M, Kubo S, Shimada M, Taketomi A, Takemura N, Nagano H, Nakamura M, Hasegawa K, Hatano E, Yoshizumi T, Endo I, Kokudo N
    • Journal Title

      Liver Cancer

      Volume: 13 Pages: 1-10

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Macrophage specific restoration of the Nrf2 gene in whole-body knockout mice ameliorates steatohepatitis induced by lipopolysaccharide from Porphyromonas gingivalis through enhanced hepatic clearance.2023

    • Author(s)
      K.Chihara, K.Okada, F.Uchida, I.Miura, S.Komine, E.Warabi, T.Takayama, H.Suzuki, T.Matsuzaka, N.Ishibashi-Kanno, K.Yamagata, T.Yanagawa, H.Bukawa, J.Shoda.
    • Journal Title

      PLoS One

      Volume: 18 Issue: 10 Pages: e0291880-e0291880

    • DOI

      10.1371/journal.pone.0291880

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Immunohistochemical expression of <scp>NRF2</scp> is correlated with the magnitude of inflammation and fibrosis in chronic liver disease2023

    • Author(s)
      To Keii、Okada Kosuke、Watahiki Takahisa、Suzuki Hideo、Tsuchiya Kiichiro、Tokushige Katsutoshi、Yamamoto Masakazu、Ariizumi Shun‐ichi、Shoda Junichi
    • Journal Title

      Cancer Medicine

      Volume: 12 Issue: 19 Pages: 19423-19437

    • DOI

      10.1002/cam4.6538

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 肝細胞のp62/Sqstm1はautophagyを介した小胞体ストレスの軽減によりマウス脂肪性肝炎を防御する2024

    • Author(s)
      岡田浩介,三浦 征,正田純一
    • Organizer
      第60回肝臓学会総会,熊本
    • Related Report
      2024 Annual Research Report
  • [Presentation] 筋細胞のNrf2は細胞外小胞を介した筋-肝連関によりマウス脂肪性肝炎を防御する2024

    • Author(s)
      三浦 征,岡田 浩介,正田 純一
    • Organizer
      第60回肝臓学会総会,熊本
    • Related Report
      2024 Annual Research Report
  • [Presentation] Nrf2を賦活化した筋細胞より分泌されるEVsはマウス脂肪性肝炎の炎症を抑制する2024

    • Author(s)
      三浦 征,岡田 浩介,水野 瑛夏,正田 純一
    • Organizer
      JDDW 2024, 神戸
    • Related Report
      2024 Annual Research Report
  • [Presentation] 脂肪細胞のNrf2は臓器連関を介してマウス脂肪性肝炎を防御する2024

    • Author(s)
      佐藤 竜大 , 岡田 浩介 , 櫻井 郁佳 , 正田 純一
    • Organizer
      第45回日本肝臓学会東部会,仙台
    • Related Report
      2024 Annual Research Report
  • [Presentation] 非アルコール性脂肪性肝炎(NASH)に対する筋細胞Nrf2の防御機構解明2024

    • Author(s)
      櫻井郁佳,岡田浩介,佐藤竜大,正田純一
    • Organizer
      第45回日本肝臓学会東部会,仙台
    • Related Report
      2024 Annual Research Report
  • [Presentation] Defning the borderline resectable for hepatocellular carcinoma from the perspective of both tumor factors and liver function)Proposal Process of Oncological Resectability Criteria for Hepatocellular Carcinoma in the Era of Novel Systemic Therapies2024

    • Author(s)
      Akahoshi K, Shindoh J, Tanabe M, Ariizumi , Eguchi S, Okamura Y, Kaibori M, Kubo S, Shimada M, Taketomi A, Takemura N, Nagao H, Nakamura M, Hasegawa K, HATANO E, Yoshizumi T, Endo I, Kokudo N
    • Organizer
      第36回日本肝胆膵外科学会学術集会
    • Related Report
      2024 Annual Research Report
  • [Presentation] The Pringle maneuver preparation during repeat laparoscopic liver resection: A Trick to overcome di#culties.2024

    • Author(s)
      Ridho AS, Takahashi T, Ubukata C, Hashida K, Matsunaga Y, Kawamoto Y, Ome Y, AriizumiI S, Honda G
    • Organizer
      第36回日本肝胆膵外科学会学術集会
    • Related Report
      2024 Annual Research Report
  • [Presentation] ヒトNASHにおけるp62/SQSTM1の発現とその役割2023

    • Author(s)
      陶 経緯,岡田浩介,徳重克年,正田純一
    • Organizer
      第43回アルコール医学生物学研究会
    • Related Report
      2023 Research-status Report
  • [Presentation] NAFLDの肝炎症線維化進展は,歯周病重症度および歯周病原菌組成と関連する2023

    • Author(s)
      千原佳菜子,岡田浩介,呉 世昶,山縣憲司,正田純一
    • Organizer
      JDDW 2023
    • Related Report
      2023 Research-status Report
  • [Presentation] 歯周病原菌由来のリポ多糖が誘導するNASHにおいてマクロファージのNrf2は肝炎症・線維化進展を防御する2023

    • Author(s)
      千原佳菜子,岡田浩介,三浦 征,陶 経緯,正田純一
    • Organizer
      第59回肝臓学会総会
    • Related Report
      2023 Research-status Report
  • [Presentation] 慢性肝疾患におけるNRF2の免疫組織学的発現は肝炎症・線維化進展と関連する2023

    • Author(s)
      陶 経緯,岡田浩介,綿引隆久,鈴木英雄,有泉俊一,正田純一
    • Organizer
      第59回肝臓学会総会
    • Related Report
      2023 Research-status Report

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Published: 2023-07-04   Modified: 2026-01-16  

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