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Metabolic remodeling in dysfunction of the cardiac conduction system: a role of miRNAs

Research Project

Project/Area Number 21K06790
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48020:Physiology-related
Research InstitutionTokai University (2023)
Ritsumeikan University (2021-2022)

Principal Investigator

Nakao Shu  東海大学, 医学部, 特任准教授 (30646956)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords心臓電気生理学 / 病態生理学 / 細胞内代謝 / 心臓刺激伝導系 / 非コードRNA / 細胞内エネルギー代謝
Outline of Research at the Start

マラソン選手など持久運動のアスリートにみられる安静時に心拍数が低い状態(徐脈)の分子メカニズムを解明するために、私たちの最近の独自データから予想されている心臓ペースメーカ組織・洞房結節組織に特有のエネルギー代謝様式が、運動による徐脈発生にどのように関与しているのかを、個体、組織、細胞、分子の多角的解析によって明らかにする。また、運動によって変化する代謝様式を改善することで徐脈を予防できるかどうかを検証する。

Outline of Final Research Achievements

Our previous RNA-seq analysis demonstrated that there is a typical energy metabolism in the cardiac conduction system. We further aimed to unveil the basis of the energy metabolism utilized to generate heart rate in healthy and diseased hearts and its correlation to miRNAs. Tissue electrophysiological testing revealed that the pacemaker tissue predominantly depends on oxidative phosphorylation but also relies on glycolysis. An imaging analysis illustrated that mitochondrial morphology in the pacemaker tissue appears disorganized and immature compared to that in atrial and ventricular myocytes. In addition, miRNA profiling in the pacemaker tissue found that some miRNAs expressed pacemaker-specifically, indicating physiological roles including energy metabolism of miRNAs in the pacemaker tissue.

Academic Significance and Societal Importance of the Research Achievements

洞房結節を構成するペースメーカ細胞は、心筋細胞の一種でありながら収縮のための作業心筋細胞とは異なる細胞形態、電気生理学的機能ならびに遺伝子発現パターンを有し、さらに本研究から洞房結節に特有のエネルギー代謝様式が存在することが示唆された。したがって本成果は、ペースメーカ機能の基盤となる代謝基質解明の基礎データとなる点で学術的意義があり、今後、病態時のエネルギー代謝変化を明らかにすることで、洞房結節に特有の分子機構を標的とした、作業心筋に副作用のない安全かつ新しい視点からの治療法開発につながる社会的意義を有する。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (34 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (7 results) Journal Article (6 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (12 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (9 results)

  • [Int'l Joint Research] University of Manchester/University of Bradford/University of Liverpool(英国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Manchester/University of Liverpool(英国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University of Montpellier(フランス)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University of Copenhagen(デンマーク)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University of Manchester/University of Liverpool/University of Bradford(英国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] University of Montpellier(フランス)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] University of Copenhagen(デンマーク)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Canonical Wnt signaling activation by chimeric antigen receptors for efficient cardiac differentiation from mouse embryonic stem cells2023

    • Author(s)
      Sogo T, Nakao S, Tsukamoto T, Ueyama T, Harada Y, Ihara D, Ishida T, Nakahara M, Hasegawa K, Akagi Y, Kida Y, Nakagawa O, Nagamune T, Kawahara M, Kawamura T
    • Journal Title

      Inflamm Regen

      Volume: 43 Issue: 1 Pages: 11-11

    • DOI

      10.1186/s41232-023-00258-6

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Common arterial trunk in a cat. A high-resolution morphological analysis with micro-computed tomography.2021

    • Author(s)
      Nakao S, Atkinson AJ, Motomochi T, Fukunaga D, Dobrzynski H.
    • Journal Title

      J Vet Cardiol

      Volume: 34 Pages: 8-15

    • DOI

      10.1016/j.jvc.2020.12.003

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Intrinsic electrical remodeling underlies atrioventricular block in athletes.2021

    • Author(s)
      Mesirca P, Nakao S, Nissen SD, Forte G, Anderson C, Trussell T, Li J, Cox C, Zi M, Logantha SJR, Yaar S, Carstensen H, Bidaud I, Stuart L, Soattin L, Morris GM, da Costa Martins PA, Cartwright EJ, Oceandy D, Mangoni ME, Jespersen T, Buhl R, Dobrzynski H, Boyett MR, D'Souza A.
    • Journal Title

      Circ Res

      Volume: 129 Issue: 1

    • DOI

      10.1161/circresaha.119.316386

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Remodelling of the Purkinje network in congestive heart failure in the rabbit.2021

    • Author(s)
      Logantha SJRJ, Cai X, Yanni J, Jones C, Stephenson R, Stuart L, Quigley G, Monfredi O, Nakao S, Oh IY, Starborg T, Kitmitto A, Vohra A, Hutcheon R, Corno A, Jarvis J, Dobrzynski H, Boyett M, Hart G.
    • Journal Title

      Circ Heart Failure

      Volume: 14 Issue: 7

    • DOI

      10.1161/circheartfailure.120.007505

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] ETS‐dependent enhancers for endothelial‐specific expression of serum/glucocorticoid‐regulated kinase 1 during mouse embryo development2021

    • Author(s)
      Harada Yukihiro, Tanaka Toru, Arai Yuji, Isomoto Yoshie, Nakano Atsushi, Nakao Shu, Urasaki Akihiro, Watanabe Yusuke, Kawamura Teruhisa, Nakagawa Osamu
    • Journal Title

      Genes to Cells

      Volume: 26 Issue: 8 Pages: 611-626

    • DOI

      10.1111/gtc.12874

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Regulation of sinus node pacemaking and atrioventricular node conduction by HCN channels in health and disease.2021

    • Author(s)
      Boyett MR, Yanni J, Tellez J, Bucchi A, Mesirca P, Cai X, Logantha SJRJ, Wilson C, Anderson C, Ariyaratnam J, Stuart L, Nakao S, Allah EA, Jones S, Lancaster M, Stephenson R, Chandler N, Smith M, Bussey C, Monfredi O, Morris G, Billeter R, Mangoni ME, ZHang H, Hart G, D'Souza A.
    • Journal Title

      Prog Biophys Mol Biol

      Volume: 166 Pages: 61-85

    • DOI

      10.1016/j.pbiomolbio.2021.06.008

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] シンポジウム「心臓研究の多様性と、その未来」 心臓刺激伝導系研究:病態生理学から機能再生療法へ2024

    • Author(s)
      中尾周
    • Organizer
      第101回日本生理学会大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] マウスの心臓再生に寄与する新規microRNAの探索2023

    • Author(s)
      植山萌恵,中原正登,齊藤佳穂,石田智明,KAO Chih Chi,中尾周,川村晃久
    • Organizer
      第44回日本炎症・再生医学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 洞房結節のペースメーカ機能における代謝エネルギー基盤のex vivo解析2023

    • Author(s)
      中谷真由、堀本嵩人、植山萌恵、原田恭弘、中尾周、川村晃久
    • Organizer
      第46回日本分子生物学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 洞房結節におけるエネルギー代謝依存性の電気生理学的解析2023

    • Author(s)
      中谷真由、堀本嵩人、植山萌恵、中尾 周、川村晃久
    • Organizer
      第100回日本生理学会大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 新生仔マウスの心筋再生に関与する新規miRNAの探索2022

    • Author(s)
      相澤茉優、中原正登、石田智明、植山萌恵、中尾 周、川村晃久
    • Organizer
      第45回日本分子生物学会年次大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Cardiac ion channel remodelling associated with miRNA upregulation underlies exercise-induced bradyarrhythmias.2022

    • Author(s)
      Nakao S, Kawamura T, Dobrzynski H, Boyett M, D'Souza A
    • Organizer
      第99回日本生理学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 心筋ダイレクトリプログラミングにおける好気性代謝制御因子IDHの役割.2021

    • Author(s)
      植山萌恵、石田智明、原田恭弘、中原正登、水田友里、馬場 藍、長谷川浩二、中尾 周、川村晃久
    • Organizer
      第6回日本心血管協会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] β3アドレナリン受容体の心拍制御への関与.2021

    • Author(s)
      柳澤和輝、石田智明、植山萌恵、土井晃大、馬場 藍、長谷川浩二、中尾 周、川村晃久
    • Organizer
      第6回日本心血管協会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] Beta-3 adrenergic receptors in the sinoatrial node for heart rate regulation.2021

    • Author(s)
      Nakao S, Yanagisawa K, Ueyama T, Hasegawa K, Kawamura T
    • Organizer
      26th International Society of Cardiovascular Pharmacotherapy Annual Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Cardiac ion channel remodelling underlies exercise-induced atrioventricular block in large and small animal models.2021

    • Author(s)
      Nakao S, Mesirca P, Nissen SD, Mangoni M, Jespersen T, Buhl R, Dobrzynski H, Boyett MR, D’Souza A.
    • Organizer
      The 5th JCS Council Forum on BCVR
    • Related Report
      2021 Research-status Report
  • [Presentation] 運動誘発性徐脈モデルマウスの洞房結節における遺伝子発現プロファイリング2021

    • Author(s)
      柳澤和輝、土井晃大、植山萌恵、馬場 藍、中尾 周、川村晃久
    • Organizer
      第113回近畿生理学談話会
    • Related Report
      2021 Research-status Report
  • [Presentation] β3アドレナリン受容体の心拍制御への関与2021

    • Author(s)
      柳澤 和輝、植山 萌恵、馬場 藍、石田智明、中尾 周、川村晃久
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report
  • [Remarks] Researchmap 中尾周

    • URL

      https://researchmap.jp/ShuNakao

    • Related Report
      2023 Annual Research Report
  • [Remarks] ORCiD Shu Nakao

    • URL

      https://orcid.org/0000-0001-8990-1179

    • Related Report
      2023 Annual Research Report
  • [Remarks] 東海大学 教員・研究者ガイド 中尾周

    • URL

      https://www.u-tokai.ac.jp/facultyguide/faculty/18266/

    • Related Report
      2023 Annual Research Report
  • [Remarks] 東海大学医学部・応用分子生理学研究室

    • URL

      https://nakaolab2021.wixsite.com/home

    • Related Report
      2023 Annual Research Report
  • [Remarks] ORCiD

    • URL

      https://orcid.org/0000-0001-8990-1179

    • Related Report
      2022 Research-status Report
  • [Remarks] Researchmap

    • URL

      https://researchmap.jp/ShuNakao

    • Related Report
      2022 Research-status Report
  • [Remarks] 東海大学 医学部医学科 基礎医学系 生体機能学領域 ​応用分子生理学研究室(中尾研)

    • URL

      https://nakaolab2021.wixsite.com/home

    • Related Report
      2022 Research-status Report
  • [Remarks] 立命館大学生命科学部応用分子生理学研究室

    • URL

      https://nakaolab2021.wixsite.com/home

    • Related Report
      2021 Research-status Report
  • [Remarks] 生命科学部・中尾周講師らがアスリートに発生する不整脈の新たな分子メカニズムを解明

    • URL

      http://www.ritsumei.ac.jp/news/detail/?id=2091

    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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