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Development of treatment for duchenne muscular dystrophy cardiomyopathy focusing on cardiomyocytes proliferation and regeneration

Research Project

Project/Area Number 20K22928
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0903:Organ-based internal medicine and related fields
Research InstitutionOsaka University

Principal Investigator

YASUTAKE HIDEKI  大阪大学, 医学系研究科, 特任研究員 (60748515)

Project Period (FY) 2020-09-11 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsデュシェンヌ型筋ジストロフィー / 疾患iPS細胞 / 心筋症
Outline of Research at the Start

デュシェンヌ型筋ジストロフィー(DMD)はジストロフィン蛋白が欠損し発症するX染色体連鎖疾患である。DMDの症状は主に骨格筋障害であり、心筋障害や中枢神経障害など様々な機能障害を伴う。しかし、これらのDMDの病態の進展機序は未だ不明である。本研究ではDMD心筋症の進展機序に心筋細胞の増殖・再生が関与していると仮説を立て、DMD心筋症の病態を明らかにし、治療法の開発に繋げていくことを目的とする。

Outline of Final Research Achievements

We have approached the proliferation and regeneration mechanism using iPS cell derived cardiomyocytes from DMD patient and genome edited iPS cell derived cardiomyocytes from DMD patient with repaired dystrophin protein. In this study, we showed YAP signal and actin stress fiber anchoring dystrophin protein are related to decreased proliferation ability of iPSC derived cardiomyocytes from DMD patient. And we identified NEK9 as proliferation signal and suggested dystrophin isoform Dp71 is associated with NEK9 expression.

Academic Significance and Societal Importance of the Research Achievements

DMD患者においてDMD心筋症による心不全が主な死因である。DMD心筋症に対しACE阻害剤やβ遮断薬などの薬物治療が存在するが、その効果は限定的であり、DMD心筋症に対する新たな治療法の開発が求められる。今回DMD患者由来iPS細胞を用いてDMD心筋症の進展機序に心筋の再生が関与することを提唱し、DMD心筋症に対する新たな治療法の開発に有用な知見が得られた。

Report

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

    (1 results)

All 2021

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

  • [Journal Article] Decreased YAP activity reduces proliferative ability in human induced pluripotent stem cell of duchenne muscular dystrophy derived cardiomyocytes2021

    • Author(s)
      Yasutake Hideki、Lee Jong-Kook、Hashimoto Akihito、Masuyama Kiyoshi、Li Jun、Kuramoto Yuki、Higo Shuichiro、Hikoso Shungo、Hidaka Kyoko、Naito Atsuhiko T.、Miyagawa Shigeru、Sawa Yoshiki、Komuro Issei、Sakata Yasushi
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 10351-10351

    • DOI

      10.1038/s41598-021-89603-8

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research

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Published: 2020-09-29   Modified: 2023-01-30  

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