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Role of endothelial mitochondrial dysfunction on cardiovascular diseases associated with NASH

Research Project

Project/Area Number 20K10555
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 58040:Forensics medicine-related
Research InstitutionKyoto University

Principal Investigator

Miyao Masashi  京都大学, 医学研究科, 講師 (90711466)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords法医病理学 / メタボリック症候群
Outline of Research at the Start

本研究では、非アルコール性脂肪性肝炎(以下、NASH)における血管内皮ミトコンドリア障害と急性心筋梗塞との関連を解明することを目的とする。NASHの発症と病態進展は、急性心筋梗塞発症と相関することが分かっている。血管内皮は、肝臓と心臓に共通に分布し、その内皮のミトコンドリアが障害されると、過剰な活性酸素の産生、アポトーシス、オートファジー、小胞体ストレスを引き起こし、全身臓器疾患の原因となる。しかし、内皮ミトコンドリア障害がNASHと急性心筋梗塞に関連するかは分かっていない。本研究ではモデルマウスと培養細胞を用いて、両疾患病態の関連を解明する。

Outline of Final Research Achievements

Nonalcoholic steatohepatitis (NASH), liver manifestation of a metabolic syndrome, has been demonstrated to be an independent risk factor for cardiovascular disease (CVD). However, the association between mitochondrial dysfunction of endothelial cells, NASH, and CVD remains elusive. We have tested the hypothesis whether mitochondrial fission in endothelial cells could have a causative role in NASH and CVD progression. Contrary to our hypothesis, excessive mitochondrial fissions were not induced in endothelial cells. However, we found that excessive fissions were profoundly induced in hepatocytes, and the blockade of the fissions in hepatocytes could lead to amelioration of NASH progression, especially in the early NASH phase. These findings provide new insights into the potential therapeutic strategies to prevent obesity-related morbidity and mortality.

Academic Significance and Societal Importance of the Research Achievements

肥満関連疾患の中で最も若年層の有病率が高く、病態理解の進んでいないNASHは全世界で増え続けており、その予防・治療法開発は持続可能な社会の発展にとって重要である。私たちはモデルマウスを用いた実験研究で、血管内皮やマクロファージ、伊東細胞のミトコンドリア障害ではなく、肝細胞内ミトコンドリアの過剰分裂がNASHの病態を進めてしまう原因となりうることを明らかにした。このように、NASHの病態に関連するものを明らかにしていくことで、肥満病態の危険性と予防可能性の啓発、新たな診断・予防法開発につなげ、1人でも多くの予防可能な死を減らすことに貢献したい。

Report

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

    (23 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (8 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 8 results,  Open Access: 8 results) Presentation (12 results) Remarks (2 results)

  • [Int'l Joint Research] Temple University(米国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Effects of DNA degradation and genotype imputation on high-density SNP microarray in pairwise kinship analysis2023

    • Author(s)
      Chu M, Morimoto C, Kawai C, Miyao M, Tamaki K.
    • Journal Title

      Leg Med

      Volume: 60 Pages: 102158-102158

    • DOI

      10.1016/j.legalmed.2022.102158

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Systemic amyloidosis with amyloid goiter: an autopsy report.2023

    • Author(s)
      Kawai C, Miyao M, Kotani H, Minami H, Abiru H, Hamayasu H, Yamamoto A, Tamaki K.
    • Journal Title

      Legal Medicine

      Volume: - Pages: 102167-102167

    • DOI

      10.1016/j.legalmed.2022.102167

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mitochondrial fission in hepatocytes as a potential therapeutic target for nonalcoholic steatohepatitis2022

    • Author(s)
      Miyao M, Kawai C, Kotani H, Minami H, Abiru H, Hamayasu H, Eguchi S, Tamaki K.
    • Journal Title

      Hepatology Research

      Volume: - Issue: 12 Pages: 1020-1033

    • DOI

      10.1111/hepr.13832

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A proof-of-concept study to construct Bayesian network decision models for supporting the categorization of sudden unexpected infant death2022

    • Author(s)
      Hamayasu Hideki、Miyao Masashi、Kawai Chihiro、Osamura Toshio、Yamamoto Akira、Minami Hirozo、Abiru Hitoshi、Tamaki Keiji、Kotani Hirokazu
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 9773-9773

    • DOI

      10.1038/s41598-022-14044-w

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fatal Dieulafoy lesion with IgG4-related disease: an autopsy case report.2022

    • Author(s)
      Miyao M, Kawai C, Kotani H, Minami H, Abiru H, Hamayasu H, Yamamoto A, Tamaki K.
    • Journal Title

      Legal Medicine

      Volume: - Pages: 102059-102059

    • DOI

      10.1016/j.legalmed.2022.102059

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mitochondrial Fission Mediates Endothelial Inflammation.2020

    • Author(s)
      Forrester SJ, Preston KJ, Cooper HA, Boyer MJ, Escoto KM, Poltronetti AJ, Elliott KJ, Kuroda R, Miyao M, Sesaki H, Akiyama T, Kimura Y, Rizzo V, Scalia R, Eguchi S.
    • Journal Title

      Hypertension

      Volume: 76 Issue: 1 Pages: 267-276

    • DOI

      10.1161/hypertensionaha.120.14686

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Involvement of Senescence and Mitochondrial Fission in Endothelial Cell Pro-Inflammatory Phenotype Induced by Angiotensin II2020

    • Author(s)
      Miyao M, Cicalese S, Kawai T, Cooper HA, Boyer MJ, Elliott KJ, Forrester SJ, Kuroda R, Rizzo V, Hashimoto T, Scalia R, Eguchi S.
    • Journal Title

      International Journal of Molecular Science

      Volume: 21(9) Issue: 9 Pages: 3112-3112

    • DOI

      10.3390/ijms21093112

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fatal Mumps Myocarditis Associated with Left Ventricular Non-Compaction2020

    • Author(s)
      Jemail Leila、Miyao Masashi、Hamayasu Hideki、Minami Hirozo、Abiru Hitoshi、Baba Shiro、Osamura Toshio、Tamaki Keiji、Kotani Hirokazu
    • Journal Title

      American Journal of Case Reports

      Volume: 21

    • DOI

      10.12659/ajcr.921177

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 不完全なSTR型に対応した血縁鑑定ソフトウェアの開発.2022

    • Author(s)
      森本千恵, 眞鍋 翔, 川合千裕, 濱保英樹, 宮尾 昌, 玉木敬二.
    • Organizer
      日本DNA多型学会第31回学術集会.
    • Related Report
      2022 Annual Research Report
  • [Presentation] 肥満病態における肝細胞ミトコンドリア過剰分裂と肝線維化.2022

    • Author(s)
      宮尾 昌, 川合千裕, 濱保英樹, 玉木敬二.
    • Organizer
      第44回日本法医学会学術中部地方集会・第69回日本法医学会学術近畿地方集会合同集会.
    • Related Report
      2022 Annual Research Report
  • [Presentation] 劇症化したアデノウイルス性髄膜炎の小児事例.2022

    • Author(s)
      丸井有美花, 宮尾 昌, 川合千裕, 濱保英樹, 阿比留仁, 南 博蔵, 玉木敬二.
    • Organizer
      第44回日本法医学会学術中部地方集会・第69回日本法医学会学術近畿地方集会合同集会.
    • Related Report
      2022 Annual Research Report
  • [Presentation] 受傷時期が推定できた亜急性頭部外傷例.2022

    • Author(s)
      川合千裕, 宮尾 昌, 南 博蔵, 阿比留仁, 玉木敬二.
    • Organizer
      第44回日本法医学会学術中部地方集会・第69回日本法医学会学術近畿地方集会合同集会.
    • Related Report
      2022 Annual Research Report
  • [Presentation] アミロイド甲状腺腫に伴う粘液水腫性昏睡の一剖検例.2022

    • Author(s)
      川合千裕, 宮尾 昌, 阿比留仁, 南 博蔵, 玉木敬二.
    • Organizer
      第106次日本法医学会学術全国集会.
    • Related Report
      2022 Annual Research Report
  • [Presentation] ミトコンドリア過剰分裂に伴うNAFLDの病態進展.2022

    • Author(s)
      宮尾 昌, 川合千裕, 阿比留仁, 南 博蔵, 玉木敬二.
    • Organizer
      第106次日本法医学会学術全国集会.
    • Related Report
      2022 Annual Research Report
  • [Presentation] Incest caseにおける尤度比利用の留意点について.2022

    • Author(s)
      玉木敬二, 曲 敏潔, 桜井健祥, 川合千裕, 宮尾 昌, 眞鍋 翔.
    • Organizer
      第106次日本法医学会学術全国集会.
    • Related Report
      2022 Annual Research Report
  • [Presentation] ミトコンドリアダイナミクス破綻とNASH2021

    • Author(s)
      宮尾 昌, 川合千裕, 南 博蔵, 阿比留仁, 玉木敬二
    • Organizer
      第68回日本法医学会学術近畿地方集会
    • Related Report
      2021 Research-status Report
  • [Presentation] NASH早期病態におけるミトコンドリア分裂の影響2021

    • Author(s)
      宮尾 昌, 川合千裕, 阿比留仁, 南 博蔵, 玉木敬二
    • Organizer
      第105次日本法医学会学術全国集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 心臓振盪により突然死した青年男性の1例.2020

    • Author(s)
      川合千裕, 宮尾 昌, 阿比留 仁, 南 博蔵, 曲 敏潔, 玉木敬二.
    • Organizer
      第67回日本法医学会学術近畿地方集会.
    • Related Report
      2020 Research-status Report
  • [Presentation] アンジオテンシン誘導性内皮老化におけるミトコンドリア分裂の寄与.2020

    • Author(s)
      宮尾 昌, 川合千裕, 桜井健祥, 花村天斗, 井上花菜, 玉木敬二.
    • Organizer
      第67回日本法医学会学術近畿地方集会.
    • Related Report
      2020 Research-status Report
  • [Presentation] 内皮細胞老化とアンジオテンシンII.2020

    • Author(s)
      宮尾 昌, 小谷泰一, 濱保英樹, 阿比留 仁, 南 博蔵, 玉木敬二.
    • Organizer
      第104次日本法医学会学術全国集会.
    • Related Report
      2020 Research-status Report
  • [Remarks]

    • URL

      http://www.fp.med.kyoto-u.ac.jp/

    • Related Report
      2022 Annual Research Report
  • [Remarks] ホームページ

    • URL

      http://www.fp.med.kyoto-u.ac.jp

    • Related Report
      2021 Research-status Report

URL: 

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

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