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Mechanotransduction on cardiac physiology

Research Project

Project/Area Number 17H02085
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Biomedical engineering/Biomaterial science and engineering
Research InstitutionOkayama University

Principal Investigator

KATANOSAKA YUKI  岡山大学, 医歯薬学総合研究科, 講師 (60432639)

Co-Investigator(Kenkyū-buntansha) 金川 基  神戸大学, 医学研究科, 客員教授 (00448044)
中村 一文  岡山大学, 医歯薬学総合研究科, 准教授 (10335630)
片野坂 公明  中部大学, 生命健康科学部, 准教授 (50335006)
氏原 嘉洋  名古屋工業大学, 工学(系)研究科(研究院), 准教授 (80610021)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2019: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2018: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Keywords心不全 / メカニカルストレス / 血行動態負荷 / 心筋細胞 / メカノセンサー / TRPV2 / トランスレーショナルリサーチ / 多階層 / 成熟・分化 / 再構築 / カルシウム / 心肥大 / 心臓 / 介在板 / Ca2+ハンドリング / ノックアウトマウス / 機械受容 / TRPチャネル / 生理学 / 遺伝子 / ストレス / 生体分子 / 循環器・高血圧
Outline of Final Research Achievements

The heart has a dynamic compensatory mechanism for haemodynamic stress. We have previously reported that TRP vanilloid family type 2 channel (TRPV2) is a key molecule in stretch-induced Ca2+ response of cardiomyocytes. In this study, we showed that TRPV2 has a pivotal role in mechanical stimulation-induced Ca2+ response, and in structural and functional development of cardiomyocytes that enable E-C coupling and synchronous contraction with neighboring cells. In addition, we showed that maintenance of the moicrotuble-structure is crucial for maintaining myocyte physiology to prevent heart failure, and thus, the results may lead to strategies for therapeutic intervention (Ujihara et al., Nature Communications, 2019).

Academic Significance and Societal Importance of the Research Achievements

我が国では、75歳以上の約50%が心不全患者であり、決定的な治療法は確立されておらず発症後の5年生存率も大変悪い。本研究では、心筋のメカノセンサー経路をターゲットとする画期的な心不全治療を提案するための基礎研究である。現行の血管拡張薬や体液調節因子阻害による降圧薬に加えて、本研究の成果としてTRPV2を介したメカニカルシグナル経路をターゲットとした心不全治療法を提案できれば、不全治療に新たな選択肢を供給することとなり、QOLを改善して国民を悩ます病気の克服に役立つことから、保健医療への貢献は計り知れない。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (16 results)

All 2019 2018 2017

All Journal Article (3 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (13 results) (of which Int'l Joint Research: 3 results,  Invited: 6 results)

  • [Journal Article] Elimination of fukutin reveals cellular and molecular pathomechanisms in muscular dystrophy-associated heart failure2019

    • Author(s)
      Ujihara Yoshihiro、Kanagawa Motoi、Mohri Satoshi、Takatsu Satomi、Kobayashi Kazuhiro、Toda Tatsushi、Naruse Keiji、Katanosaka Yuki
    • Journal Title

      Nature Communications

      Volume: 10 Issue: 1 Pages: 5754-5754

    • DOI

      10.1038/s41467-019-13623-2

    • NAID

      120006777089

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] TRPV2を核とした心臓のメカノバイオロジー研究2019

    • Author(s)
      片野坂友紀
    • Journal Title

      医学のあゆみ

      Volume: 270 Pages: 904-909

    • Related Report
      2019 Annual Research Report
  • [Journal Article] TRPV2 is required for mechanical nociception and the stretch-evoked response of primary sensory neurons.2018

    • Author(s)
      Kimiaki Katanosaka, Satomi Takatsu, Kazue Mizumura, Keiji Naruse, Yuki Katanosaka
    • Journal Title

      Scientific Reports

      Volume: 8(1) Issue: 1 Pages: 16782-16791

    • DOI

      10.1038/s41598-018-35049-4

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 心臓のメカノバイオロジー ~心筋細胞のTRPV2の役割を中心に~2019

    • Author(s)
      Yuki Katanosaka
    • Organizer
      第42回日本高血圧学会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] The role of TRPV2 during the development of excitation-contraction coupling in neonatal cardiomyocytes.2019

    • Author(s)
      Katanosaka Y, Ujihara Y, Katanosaka K, Naruse K.
    • Organizer
      Gordon Conference muscle E-C coupling
    • Related Report
      2019 Annual Research Report
  • [Presentation] TRPV2 is crucial for the development of intercalated discs in mouse hearts2019

    • Author(s)
      Katanosaka Y, Shibuya M, Ujihara Y, Mohri S, Naruse K.
    • Organizer
      63nd Biophysical Society, Biophysical Journal
    • Related Report
      2019 Annual Research Report
  • [Presentation] TRPV2 is crucial for the development of intercalated discs in mouse hearts.2019

    • Author(s)
      Yuki Katanosaka
    • Organizer
      63rd Annual meeting of biophysical society
    • Related Report
      2018 Annual Research Report
  • [Presentation] 心臓の分化・成熟およびストレス応答におけるメカノセンサーTRPV2の役割2018

    • Author(s)
      片野坂友紀
    • Organizer
      第57回日本生体医工学会大会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Fukutin-KO心筋細胞から探る筋ジストロフィー関連心筋症の病態発症メカニズム2018

    • Author(s)
      片野坂友紀
    • Organizer
      第4回 日本筋学会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 心臓の可塑性や生理機能を支える膜輸送体:メカノセンサーTRPV22018

    • Author(s)
      片野坂友紀
    • Organizer
      第91回 日本生化学会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 骨格筋特異的TRPV2ノックアウトマウスを用いたメカニカルストレス応答の解析2018

    • Author(s)
      澁谷慎、日比野雄平、片野坂公明、片野坂友紀
    • Organizer
      第6回 若手による骨格筋細胞研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] The role of NCX1 on the maintenance of T-tubule architecture in pressure-overloaded hearts2018

    • Author(s)
      Yoshihiro Ujihara, Satomi Takatsu, Keiji Naruse, Satoshi Mohri, Yuki Katanosaka
    • Organizer
      62nd annual meeting of biophysical society
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] TRPV2 is crucial for the development of excitation-contraction coupling in neonatal cardiomyocytes.2018

    • Author(s)
      Yuki Katanosaka, Yoshihiro Ujihara, Yumiko Chiba, Satoshi Mohri, Keiji Naruse
    • Organizer
      62nd annual meeting of biophysical society
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Critical roles for TRPV2 in the formation and maintenance of intercalated discs in cardiomyocytes2018

    • Author(s)
      Yuki Katanosaka
    • Organizer
      第95回 日本生理学会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] TRPV2 promotes the structural and functional maturation of cardiomyocytes.2017

    • Author(s)
      Yuki Katanosaka
    • Organizer
      3rd International Symposium on Mechanobiology
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Fukutin-KO心筋細胞から探る筋ジストロフィー関連心筋症の病態発症メカニズム2017

    • Author(s)
      片野坂友紀
    • Organizer
      第5回 若手による骨格筋研究会
    • Related Report
      2017 Annual Research Report
    • Invited

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Published: 2017-04-28   Modified: 2021-02-19  

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