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Study of the Pathological Significance of Enlarged Mitochondria in BOLA3 Mutations Using iPSCs.

Research Project

Project/Area Number 22K15397
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 49010:Pathological biochemistry-related
Research InstitutionJichi Medical University

Principal Investigator

Tokuyama Takeshi  自治医科大学, 医学部, 助教 (30808093)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsミトコンドリア / ミトコンドリア心筋症 / ミトコンドリアダイナミクス / 疾患iPS細胞 / ミトコンドリア創薬 / BOLA3 / ミトコンドリア病 / 疾患iPS / ミトコンドリア形態異常 / 心筋症 / ミトコンドリア形態制御 / iPSC / 疾患モデリング
Outline of Research at the Start

ミトコンドリアは我々の体のエネルギーを生産する細胞内小器官であり、分裂と融合を繰り返す「ミトコンドリアダイナミクス」によって品質(機能)を保っている。ミトコンドリア心筋症患者細胞のミトコンドリア形状を調べたところ、複数の細胞株で共通する特殊なミトコンドリアダイナミクス異常を見つけた。本研究は、患者線維芽細胞-疾患iPSC成熟心筋細胞の研究から、ミトコンドリア心筋症の遺伝子変異に起因するミトコンドリアダイナミクス異常がミトコンドリア心筋症の病態基盤であることを証明する。また、この特殊なミトコンドリア形状異常を指標とした創薬探索がミトコンドリア心筋症に応用できるかを検討する。

Outline of Final Research Achievements

Mitochondrial functions are regulated in various ways, one of which is through the modulation of mitochondrial morphology. By observing fibroblasts derived from mitochondrial cardiomyopathy, we discovered an abnormal swollen morphology in some mitochondria, which we named Mito-Ball. We investigated its physiological significance. Mito-Balls were found to contain high levels of ATP and ROS, with a structure suggesting aggregation of the matrix and internal mitochondrial components. We also identified methods to reduce the presence of these structures. Future experiments using mice are anticipated to develop therapies using Mito-Balls as indicators.

Academic Significance and Societal Importance of the Research Achievements

ミトコンドリアの機能異常はアルツハイマー病・肥満・糖尿病・ 不妊など多岐にわたる疾患の病態基盤であると考えられている。今回観察されたMito-Ballは遺伝子変異箇所などによらず広範な細胞で観察されるもので、Mito-Ballはミトコンドリア障害においてユビキタスな現象であると考えられる。このことから、Mito-Ballに着目した研究成果はミトコンドリアを原因とする多くの病気の病態解明・治療法確立に役立つ知見になることが期待される。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (17 results)

All 2024 2023 2022 Other

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (10 results) (of which Int'l Joint Research: 2 results) Book (2 results) Remarks (1 results)

  • [Journal Article] An AsCas12f-based compact genome-editing tool derived by deep mutational scanning and structural analysis2023

    • Author(s)
      Hino Tomohiro、Omura Satoshi N.、Nakagawa Ryoya、Togashi Tomoki、Takeda Satoru N.、Hiramoto Takafumi、Tasaka Satoshi、Hirano Hisato、Tokuyama Takeshi、Uosaki Hideki、Ishiguro Soh、Kagieva Madina、Yamano Hiroyuki、Ozaki Yuki、Motooka Daisuke、Mori Hideto、Kirita Yuhei、Kise Yoshiaki et al.
    • Journal Title

      Cell

      Volume: 186 Issue: 22 Pages: 4920-4935

    • DOI

      10.1016/j.cell.2023.08.031

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Role of Mitochondrial Dynamics in Heart Diseases2023

    • Author(s)
      Tokuyama Takeshi、Yanagi Shigeru
    • Journal Title

      Genes

      Volume: 14 Issue: 10 Pages: 1876-1876

    • DOI

      10.3390/genes14101876

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Total and reduced/oxidized forms of coenzyme Q10 in fibroblasts of patients with mitochondrial disease2023

    • Author(s)
      Watanabe, C., Osaka, H., Watanabe, M., Miyauchi, A., Jimbo, E. F., Tokuyama, T., Uosaki, H., Kishita, Y., Okazaki, Y., Onuki, T., Ebihara, T., Aizawa, K., Murayama, K., Ohtake, A., & Yamagata, T.
    • Journal Title

      Mol Genet Metab Rep

      Volume: 34 Pages: 100951-100951

    • DOI

      10.1016/j.ymgmr.2022.100951

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sarcomere maturation: function acquisition, molecular mechanism, and interplay with other organelles2022

    • Author(s)
      Ahmed Razan E.、Tokuyama Takeshi、Anzai Tatsuya、Chanthra Nawin、Uosaki Hideki
    • Journal Title

      Philosophical Transactions of the Royal Society B: Biological Sciences

      Volume: 377 Issue: 1864 Pages: 20210325-20210325

    • DOI

      10.1098/rstb.2021.0325

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Gene Therapy for Mybpc3 Mutant Cardiomyopathy Models2024

    • Author(s)
      魚崎英毅, 安済達也, 川上亮, 徳山剛士, AHMED Razan, TORIZAL F Gandhi, 石井秀樹, 小板橋紀通
    • Organizer
      第88回日本循環器学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Maturation Culture Exaggerated Disease Phenotype in Mitochondrial Cardiomyopathy iPSC-derived Cardiomyocytes2023

    • Author(s)
      Razan E Ahmed, Nawin Chanthra, Kumiko A Iwabuchi, Takeshi Tokuyama, Hideki Uosaki
    • Organizer
      Weinstein Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Combinations of Nuclear Receptor Activations Revealed Disease Phenotype in iPSC-CMs Derived from Patients with Mitochondrial Cardiomyopathy.2023

    • Author(s)
      Razan E Ahmed, Nawin Chanthra, Kumiko A Iwabuchi, Takeshi Tokuyama, Hideki Uosaki
    • Organizer
      Cardiovascular Bioenginnering (CVBE) Symposium 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ヒト肥大型心筋症遺伝子変異ノックインマウスにおける遺伝子治療による病的な心臓リモデリングの改善2023

    • Author(s)
      小板橋紀通, 川上亮, 徳山剛士, 安済達也, Ahmed Ranzan, Torizal Fuad Gandhi, 長尾恭光, 魚崎英毅, 石井秀樹
    • Organizer
      第71 回日本心臓病学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 肥大型心筋症モデルマウスに対する遺伝子治療と病的リモデリングの抑制2023

    • Author(s)
      魚崎英毅, 安済達也, 川上亮, 徳山剛士, AHMED Razan, TORIZAL F Gandhi, 長尾恭光, 石井秀樹, 小板橋紀通
    • Organizer
      第29回日本遺伝子細胞治療学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Gene Therapy Improves Pathological Cardiac Remodeling in Human Hypertrophic Cardiomyopathy Gene Variant Knock-in Mice2023

    • Author(s)
      Norimichi Koitabashi, Ryo Kawakami, Takeshi Tokuyama, Razan E Ahmed, Fuad Gandhi Torizal, Tatsuya Anzai, Yasumitsu Nagao, Hideki Ishii, Hideki Uosaki
    • Organizer
      American Heart Association
    • Related Report
      2023 Annual Research Report
  • [Presentation] 疾患iPS細胞を用いたBOLA3ミトコンドリア心筋症の病態と新規形態異常Mito-Ballの解明2023

    • Author(s)
      徳山剛士、魚崎英毅
    • Organizer
      第22回日本ミトコンドリア学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] The mitochondrial ubiquitin ligase MITOL is downregulated in myocardial infarction and induces mitophagy via mitochondrial fission.2023

    • Author(s)
      Takeshi Tokuyama
    • Organizer
      第87回日本循環器学会学術集会(JCS2023)
    • Related Report
      2022 Research-status Report
  • [Presentation] ミトコンドリア酵素MITOLの低下は心臓老化や心筋梗塞を増悪し、 MITOLの活性化は心筋梗塞の重症化を抑制する2022

    • Author(s)
      徳山剛士, 魚崎英毅, 柳茂
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] ミトコンドリア外膜上の掃除機構の破綻が 心筋梗塞の病態を悪化させる2022

    • Author(s)
      徳山剛士, 魚崎英毅, 柳茂
    • Organizer
      第51回日本心脈管作動物質学会
    • Related Report
      2022 Research-status Report
  • [Book] 生体の科学 2023 Oct 15; 74(5):396-3972023

    • Author(s)
      徳山剛士、魚崎英毅
    • Total Pages
      2
    • Publisher
      医学書院
    • Related Report
      2023 Annual Research Report
  • [Book] 実験医学増刊 Vol.41 No.5 ミトコンドリア 疾患治療の新時代2023

    • Author(s)
      徳山 剛士, 魚崎 英毅
    • Total Pages
      7
    • Publisher
      羊土社
    • ISBN
      9784758104098
    • Related Report
      2022 Research-status Report
  • [Remarks] 所属研究室HP

    • URL

      https://www.jichi.ac.jp/saisei/publication.html

    • Related Report
      2023 Annual Research Report

URL: 

Published: 2022-04-19   Modified: 2025-01-30  

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