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Investigation of regulatory mechanism of cardiac mechanics by molecular-spring connectin and clinical application for heart failure

Research Project

Project/Area Number 17H00859
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Biomedical engineering/Biomaterial science and engineering
Research InstitutionKawasaki Medical School

Principal Investigator

MOHRI SATOSHI  川崎医科大学, 医学部, 教授 (00294413)

Co-Investigator(Kenkyū-buntansha) 塚田 孝祐  慶應義塾大学, 理工学部(矢上), 教授 (00351883)
花島 章  川崎医科大学, 医学部, 講師 (70572981)
橋本 謙  川崎医科大学, 医学部, 准教授 (80341080)
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 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥37,830,000 (Direct Cost: ¥29,100,000、Indirect Cost: ¥8,730,000)
Fiscal Year 2020: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2019: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2018: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2017: ¥19,890,000 (Direct Cost: ¥15,300,000、Indirect Cost: ¥4,590,000)
Keywords拡張機能 / 心不全 / コネクチン / 光ピンセット / X線位相差CT / 心室拡張機能 / タイチン / 心臓メカニクス / 心室拡張能 / 拡張障害性心不全 / 冠循環 / 拡張機能障害 / 心臓拡張機能 / コネクチン(タイチン) / 心機能 / 酸素環境 / 心筋カルシウム動態
Outline of Final Research Achievements

Assessment of mechanical property and other function of spring molecule connectin (also called titin) has been hampered by the largest molecular size in body. In this project, we succeeded in cellular expression of huge molecule (Novex-3, 650kD) on cultured cardiomyocytes using baculovirus expression system. We also established the molecular tension measurement system using optical tweezers to evaluate mechanical properties of connectin, and visualization of the non-fixed and diastolic-arrested hearts using X-ray phase contrast CT to integrate information of pressure and morphology. As for assessment at individual level, we evaluated time course of connectin expression of monocrotaline rat model and regional differentiation. The multi-scale analysis including these molecular, cellular, organ and individual information can accelerate the research of cardiac regulatory system with connectin.

Academic Significance and Societal Importance of the Research Achievements

心臓は収縮と拡張を繰り返す血液ポンプであり、収縮が障害される心不全の病態解明や治療法開発は急速に進んできた。一方、近年になり拡張障害性心不全の重要性が認識されてきたが、その病態には不明な点も多い。心臓の拡張機能を規定するバネ分子:コネクチンは生体内最大の分子であり、その機能評価のためには分子生物学的手法から生体医工学的な手法まで学際的に取り組む必要がある。本研究ではコネクチンを軸とした心臓機能制御システムの解明に取り組み、培養細胞への巨大分子発現や分子張力測定システムの構築、X線位相差CTによる非固定組織の可視化法開発に成功し、既存の方法論では得られなかった生体情報を取得することが出来た。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (22 results)

All 2019 2018 2017 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (19 results) (of which Int'l Joint Research: 3 results) Remarks (1 results)

  • [Journal Article] Nuclear connectin novex-3 promotes proliferation of hypoxic foetal cardiomyocytes.2018

    • Author(s)
      Hashimoto K, Kodama A, Sugino M, Yobimoto T, Honda T, Hanashima A, Ujihara Y, Mohri S.
    • Journal Title

      Sci Rep.

      Volume: 8(1) Issue: 1 Pages: 12337-12337

    • DOI

      10.1038/s41598-018-30886-9

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Turtle spongious ventricles exhibit more compliant diastolic propertyand possess larger elastic regions of connectin in comparison to ratcompact left ventricles2018

    • Author(s)
      Honda T, Ujihara Y, Hanashima A, Hashimoto K, Tanemoto K, and Mohri S.
    • Journal Title

      Kawasaki Medical Journal

      Volume: 44(1) Pages: 1-17

    • DOI

      10.11482/KMJ-E44(1)1

    • ISSN
      0385-0234, 2434-3404
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 進化とともに高弾性化する脊椎動物心臓:バネ分子コネクチンの一次構造決定による心室機械特性の検討2019

    • Author(s)
      花島章, 氏原嘉洋, 岩佐真衣, 児玉彩, 橋本謙, 毛利聡
    • Organizer
      第58回生体医工学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 筋弾性蛋白質コネクチンの軟骨魚綱における独自進化2019

    • Author(s)
      花島章、氏原嘉洋、岩佐真衣、多田麻友子、大平桃子、木元弥咲、児玉彩、橋本謙、毛利聡
    • Organizer
      日本進化学会第21回大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 軟骨魚類心臓コネクチンの構造2019

    • Author(s)
      花島章,氏原嘉洋,大平桃子,岩佐真衣,児玉彩,橋本謙,毛利聡
    • Organizer
      日本動物学会第90回大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Nuclear connectin novex-3 is essential for proliferation of hypoxic fetal cardiomyocytes2019

    • Author(s)
      Ken Hashimoto, Aya Kodama, Miki Sugino, Tomoko Yobimoto, Takeshi Honda, Akira Hanashima, Yoshihiro Ujihara, Satoshi Mohri
    • Organizer
      9th FAOPS (Federation of Asian and Oceanian Physiological Society)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evolutional relationship between hearts and elastic protein connectins2019

    • Author(s)
      Akira Hanashima, Yoshihiro Ujihara, Mayuko Tada, Mai Iwasa, Aya Kodama, Takeshi Honda, Ken Hashimoto, Satoshi Mohri
    • Organizer
      9th FAOPS (Federation of Asian and Oceanian Physiological Society)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Comparison of cardiomyocyte kinetics of rat left ventricle and turtle ventricle2019

    • Author(s)
      Yoshihiro Ujihara, Akira Hanashima, Takeshi Honda, Aya Kodama, Ken Hashimoto, Satoshi Mohri
    • Organizer
      9th FAOPS (Federation of Asian and Oceanian Physiological Society)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Connectin novel-3 enhances cardiomyocyte proliferation in hypoxic fetal environment.2018

    • Author(s)
      Ken Hashimoto, Aya Kodama, Miki Sugino, Tomoko Yobimoto, Takeshi Honda, Akira Hanashima, Yoshihiro Ujihara, Satoshi Mohri
    • Organizer
      第57回日本生体医工学会大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Extension restriction of coronary circulation hearts by shortening of the elastic protein connectin2018

    • Author(s)
      Akira Hanashima, Ken Hashimoto, Yoshihiro Ujihara, Aya Kodama, Miki Sugino, Tomoko Yobimoto, Takeshi Honda, Satoshi Mohri
    • Organizer
      第57回日本生体医工学会大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 軟骨魚類心臓の構造と弾性蛋白質コネクチンの独自進化2018

    • Author(s)
      花島章, 氏原嘉洋, 多田麻友子, 岩佐真衣, 児玉彩, 本田威, 橋本謙, 毛利聡
    • Organizer
      日本進化学会第20回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 心室における筋弾性蛋白質コネクチンの脊椎動物種間比較と生理学・進化的意義2018

    • Author(s)
      花島章, 氏原嘉洋, 本田威, 多田麻友子, 岩佐真衣, 児玉彩, 橋本謙, 毛利聡
    • Organizer
      第4回日本筋学会学術大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ラットとカメの心室心筋細胞の引張特性の比較2018

    • Author(s)
      氏原 嘉洋, 花島 章, 本田 威, 児玉 彩, 橋本 謙, 毛利 聡
    • Organizer
      第57回日本生体医工学会大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 軟骨魚類冠循環心臓とコネクチンの独自進化2018

    • Author(s)
      花島章,氏原嘉洋,岩佐真衣,多田麻友子,児玉彩,本田威,橋本謙,毛利聡
    • Organizer
      日本動物学会第89回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] コネクチンI帯弾性領域の構造と脊椎動物心臓進化2018

    • Author(s)
      花島章, 橋本謙, 氏原嘉洋, 毛利聡
    • Organizer
      生体運動研究合同班会議2018
    • Related Report
      2017 Annual Research Report
  • [Presentation] 冠循環心臓におけるコネクチン弾性構造の短縮2018

    • Author(s)
      花島章, 橋本謙, 氏原嘉洋, 本田威, 児玉彩, 呼元知子, 杉野充希, 毛利聡
    • Organizer
      第95回日本生理学会大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] ラットの緻密心筋とカメのスポンジ状心筋の拡張性の比較2018

    • Author(s)
      氏原 嘉洋, 花島 章, 本田 威, 児玉 彩, 橋本 謙, 毛利 聡
    • Organizer
      第95回日本生理学会大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 冠循環の血流特性による心臓弾性蛋白質コネクチンの短縮2017

    • Author(s)
      花島章,橋本謙,氏原嘉洋,本田威,児玉彩,呼元知子,杉野充希,毛利聡
    • Organizer
      第40回日本バイオレオロジー学会年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 伸びることを拒んできた私達哺乳類の心臓:心室拡張機能の進化的考察2017

    • Author(s)
      本田 威, 田村 太志, 花島 章, 氏原 嘉洋, 山澤 隆彦, 古川 博史, 橋本 謙, 渡部 芳子, 柚木 靖弘, 田淵 篤, 種本 和雄, 毛利 聡
    • Organizer
      第110回日本循環器学会中国・四国合同地方会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 脊椎動物心臓進化とコネクチン弾性構造2017

    • Author(s)
      花島章、橋本謙、氏原嘉洋、本田威、児玉彩、呼元知子、杉野充希、毛利聡
    • Organizer
      日本進化学会第19回大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 脊椎動物コネクチンの弾性構造決定による冠循環心臓の進化解明2017

    • Author(s)
      花島章、橋本謙、氏原嘉洋、本田威、児玉彩、呼元知子、杉野充希、毛利聡
    • Organizer
      日本動物学会第88回大会
    • Related Report
      2017 Annual Research Report
  • [Remarks] 川崎医科大学・生理学1 ホームページ

    • URL

      https://physiology1kawasak.wixsite.com/website-2

    • Related Report
      2020 Annual Research Report

URL: 

Published: 2017-04-28   Modified: 2022-01-27  

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