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The mechanism of liver carcinogenesis in NASH from using new animal models and human materials

Research Project

Project/Area Number 19K08460
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

Ishige Kazunori  筑波大学, 医学医療系, 客員研究員 (20597918)

Co-Investigator(Kenkyū-buntansha) 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, 教授 (90241827)
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: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsNASH / 肝癌 / p62 / Nrf2 / NASH肝発癌 / 臓器連関 / 組織細胞特異的レスキューマウス
Outline of Research at the Start

本研究は,Nrf2およびp62を介したNASH肝発癌機構を明らかにすることを目的とする.そのために,①p62:Nrf2遺伝子二重欠失マウスとそれをベースにして作製した組織細胞特異的p62およびNrf2遺伝子レスキューマウスの表現型を比較し,組織別のNrf2とp62がどのように肝発癌に関与するか,②ヒト肝癌臨床検体を用いて,免疫組織学的解析を行い,Nrf2, p62がどのようにヒトNASH肝癌で発現し,肝癌の進行(予後)に関わるか,③肝細胞およびマクロファージ細胞(Kupffer細胞)を用いた細胞実験により,肝発癌シグナルにNrf2とp62がどのように関与するか,を明らかにする.

Outline of Final Research Achievements

p62 and Nrf2 double knock-out (DKO) mice exhibit NASH fed by normal chow, moreover, these mice develop liver cancers fed by a high fat feeding. To elucidate the mechanism of liver carcinogenesis, tissue specific conditional p62 rescue mice were analyzed. The p62 gene rescue of hepatocytes suppressed the development of NASH and reduced the prevalence of liver cancer from 39% to 14%. To explore the role of NRF2 and KEAP1 in human NASH and liver cancer, clinical liver specimens collected by surgery were analyzed by NRF2 and KEAP1 immunohistochemistry. The intensity and nuclear translocation of NRF2 associated with hepatic inflammation and fibrosis in non-tumor (cirrhosis) area, however, did not associate with differentiation and size of liver cancers. While, the intensity of KEAP1 did not have relationship with the intensity and nuclear translocation of NRF2. p62 and Nrf2 in hepatocytes was considered to play a protective role against the development of steatohepatitis and liver cancer.

Academic Significance and Societal Importance of the Research Achievements

非アルコール性脂肪性肝炎(NASH)は,単純性脂肪肝から発生し,肝硬変,肝癌へ進行する致死的疾患であるが,その発症進展機序は完全には解明されていない.本研究は,ヒトNASHおよび肝癌に類似する新規モデルの解析により,NASH肝発癌のメカニズムにp62やNrf2が関与する可能性を示唆し,今後の肝癌発症機序の解明に寄与すると考えられる.また,基礎と臨床の両面から,肝細胞のp62とNrf2がNASHと肝癌に対して防御的な役割を果たすことを見出したことにより,これらの分子が新しいNASHの治療標的と成り得る可能性を示した点で,将来的なNASH治療開発のための研究として意義が大きい.

Report

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

    (15 results)

All 2021 2020 2019

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (8 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] The prevalence and clinical implications of pancreatic fat accumulation identified during a medical check-up2021

    • Author(s)
      Okada K, Watahiki T, Horie M, Takayama T, Aida Y, To K, Shida T, Ishige K, Suzuki H, Nishiyama H, Shoda J
    • Journal Title

      Medicine

      Volume: 100 Issue: 41 Pages: e27487-e27487

    • DOI

      10.1097/md.0000000000027487

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Label-free functional and structural imaging of liver microvascular complex in mice by Jones matrix optical coherence tomography2021

    • Author(s)
      Mukherjee Pradipta、Miyazawa Arata、Fukuda Shinichi、Yamashita Toshiharu、Lukmanto Donny、Okada Kosuke、El-Sadek Ibrahim Abd、Zhu Lida、Makita Shuichi、Oshika Tetsuro、Yasuno Yoshiaki
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 20054-20054

    • DOI

      10.1038/s41598-021-98909-6

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Prevention of non-alcoholic steatohepatitis by long-term exercise via the induction of phenotypic changes in Kupffer cells of hyperphagic obese mice2021

    • Author(s)
      Miura I, Komine S, Okada K, Wada S, Warabi E, Uchida F, Oh S, Suzuki H, Mizokami Y, Shoda J
    • Journal Title

      Physiol Reps

      Volume: 9 Issue: 9

    • DOI

      10.14814/phy2.14859

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Association of dietary habits and physical activity levels with non-alcoholic fatty liver disease with advanced liver fibrosis2021

    • Author(s)
      Yabe Y, Kim T, Oh S, Oshida N, Hasegawa N, Kamimaki T, Someya N, Shoda J
    • Journal Title

      Int J Environ Res and Public Health

      Volume: 18 Issue: 17 Pages: 8918-8918

    • DOI

      10.3390/ijerph18178918

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Gender difference in development of steatohepatitis in <i>p62/Sqstm1 and Nrf2</i> double-knockout mice2020

    • Author(s)
      Watahiki T, Okada K, Warabi E, Nagaoka T, Suzuki H, Ishige K, Yanagawa T, Takahashi S, Mizokami Y, Tokushige K, Ariizumi SI, Yamamoto M, Shoda J
    • Journal Title

      Experimental Animals

      Volume: 69 Issue: 4 Pages: 395-406

    • DOI

      10.1538/expanim.20-0028

    • NAID

      130007938666

    • ISSN
      0007-5124, 1341-1357, 1881-7122
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Clinical outcomes of previously untreated patients with unresectable intrahepatic cholangiocarcinoma following proton beam therapy2019

    • Author(s)
      Shimizu Shosei、Okumura Toshiyuki、Oshiro Yoshiko、Fukumitsu Nobuyoshi、Fukuda Kuniaki、Ishige Kazunori、Hasegawa Naoyuki、Numajiri Haruko、Murofushi Keiko、Ohnishi Kayoko、Mizumoto Masashi、Nonaka Tetsuo、Ishikawa Hitoshi、Sakurai Hideyuki
    • Journal Title

      Radiation Oncology

      Volume: 14 Issue: 1 Pages: 241-241

    • DOI

      10.1186/s13014-019-1451-5

    • NAID

      120007132805

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Safety margin of radiofrequency ablation for hepatocellular carcinoma: a prospective study using magnetic resonance imaging with superparamagnetic iron oxide.2019

    • Author(s)
      2.Fukuda K, Mori K, Hasegawa N, Nasu K, Ishige K, Okamoto Y, Shiigai M, Abei M, Minami M, Hyodo I.
    • Journal Title

      Jpn J Raiol.

      Volume: 37 Issue: 7 Pages: 555-563

    • DOI

      10.1007/s11604-019-00843-1

    • NAID

      50014194392

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] p62/SQSTM1 in hepatocytes plays a protective role against the development of steatohepatitis in mice.2021

    • Author(s)
      Okada K, Watahiki T, Shoda J
    • Organizer
      JDDW2021, Kobe
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] NASH進行とNASH肝癌におけるautophagy調節因子p62の役割2021

    • Author(s)
      陶 経緯,綿引隆久,岡田浩介,石毛和紀,鈴木英雄,有泉俊一,山本雅一,正田純一
    • Organizer
      JDDW2021, 神戸
    • Related Report
      2021 Annual Research Report
  • [Presentation] p62およびNrf2遺伝子二重欠失マウスは,腸内細菌叢の変化に関連したlipopolysaccharide増加により脂肪性肝炎を自然発症する2021

    • Author(s)
      岡田浩介,綿引隆久,正田純一
    • Organizer
      第107回消化器病学会総会,東京
    • Related Report
      2021 Annual Research Report
  • [Presentation] 脂肪酸代謝制御因子p62はマウス脂肪性肝炎を防御する - 組織細胞特異的p62遺伝子レスキューマウスの解析より2020

    • Author(s)
      岡田浩介,綿引隆久,正田純一
    • Organizer
      JDDW2020(神戸)
    • Related Report
      2020 Research-status Report
  • [Presentation] レドックスナノ粒子(RNP)はp62:Nrf2遺伝子二重欠失マウス脂肪性肝炎における線維化を抑止する2020

    • Author(s)
      綿引隆久,岡田浩介,正田純一
    • Organizer
      JDDW2020(神戸)
    • Related Report
      2020 Research-status Report
  • [Presentation] p62は肝臓-脂肪組織の連関による脂肪酸代謝の制御を介してマウス脂肪性肝炎を防御する2020

    • Author(s)
      岡田浩介, 綿引隆久,正田純一
    • Organizer
      第56回肝臓学会総会(大阪)
    • Related Report
      2020 Research-status Report
  • [Presentation] 脂肪酸代謝に着目したマウス脂肪性肝炎におけるp62の役割2019

    • Author(s)
      岡田浩介, 石毛和紀,蕨 栄治,正田純一
    • Organizer
      第105回消化器病学会総会,金沢
    • Related Report
      2019 Research-status Report
  • [Presentation] Lipophagy制御因子p62は,中性脂肪-脂肪酸代謝を介してマウス脂肪性肝炎を防御する2019

    • Author(s)
      岡田浩介, 石毛和紀,正田純一
    • Organizer
      第55回肝臓学会総会,東京
    • Related Report
      2019 Research-status Report

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

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