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Elucidation of mechanisms how skeletal muscle integrates different cell types to form a functional organ.

Research Project

Project/Area Number 19H03233
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 44020:Developmental biology-related
Research InstitutionKyoto University

Principal Investigator

Sehara Atsuko  京都大学, 医生物学研究所, 連携教授 (60209038)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2020: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2019: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Keywords骨格筋発生 / 増殖因子 / 転写因子 / プロテアーゼ / 臓器形成 / 筋腱接合部形成 / 骨形成 / 神経筋接合部
Outline of Research at the Start

これまで、骨格筋・腱・神経発生の研究などが、個々の分野で研究され、そこに関わる遺伝子・分子・細胞の詳細が解明されてきた。しかし、これらの異種組織がどのように集結し機能的に統合されて構造的・機能的に調和の取れた臓器として発達するのか、そのメカニズムには未解明なところが多い。骨格筋と相互作用する神経や腱を可視化したゼブラフィッシュ胚を観察すると、これらの集結は、発生過程の中できちんとプログラムされていることがわかってきたことから、この動物を用いて、これら異種細胞・組織の骨格筋への集結の仕組みを解明する。

Outline of Final Research Achievements

In this project, we asked how muscle cells integrate other cell types and tissues such as embryonic tenocytes and connective tissues to form skeletal muscles as organs.
We could identify EBF3 as a novel transcription factor expressed at the myo-tendon junction using zebrafish and mice. EBF3 regulates differentiation of immature connective tissue cells, and it is essential for the sternum formation in mice. We could also elucidate roles of ADAM19, one of transmembrane metalloproteases, in differentiation of tenocytes. ADAM19 mediates the attenuation of BMP signaling critical for the tenocyte differentiation through the ectodomain shedding of ALK2.

Academic Significance and Societal Importance of the Research Achievements

骨格筋には腱細胞や多くの結合組織細胞が隣接し、骨とともに運動器を形作るが、それらの細胞の発生や細胞系譜・統合機構についてはほとんど解明されていない。腱や結合組織細胞分化におけるEbf3やADAM19の同定とその役割はそれぞれ非常にユニークなもので、学術的に重要である。
また、Ebf3欠損による胸骨形成不全に加え、ADAM19欠損による腱分化不全がそれらの細胞の軟骨化を引き起こし、心室中隔欠損を生ずるという心室中隔欠損の細胞基盤を明らかにしたこと、ヒトADAM19によりヒトALK2が切断されることも示し、ヒトにおける同様のメカニズムの存在を示唆できたことには、大きな医学的価値がある。

Report

(3 results)
  • 2022 Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (12 results)

All 2020 2019

All Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (8 results) (of which Int'l Joint Research: 3 results,  Invited: 4 results)

  • [Journal Article] Transient and lineage-restricted requirement of Ebf3 for sternum ossification.2020

    • Author(s)
      Kuriki M, Sato F, Arai HN, Sogabe M, Kaneko M, Kiyonari H, Kawakami K, Yoshimoto Y, Shukunami C, Sehara-Fujisawa A.
    • Journal Title

      Development

      Volume: 147 Issue: 9

    • DOI

      10.1242/dev.186239

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Restored interlaced volumetric imaging increases image quality and scanning speed during intravital imaging in living mice2020

    • Author(s)
      Sogabe Maina、Ohzeki Masayuki、Fujimoto Koji、Sehara‐Fujisawa Atsuko、Nishimura Satoshi
    • Journal Title

      Journal of Biophotonics

      Volume: 13 Issue: 5 Pages: 201960204-201960204

    • DOI

      10.1002/jbio.201960204

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Metalloprotease-Dependent Attenuation of BMP Signaling Restricts Cardiac Neural Crest Cell Fate.2019

    • Author(s)
      Arai HN, Sato F, Yamamoto T, Woltjen K, Kiyonari H, Yoshimoto Y, Shukunami C, Akiyama H, Kist R, Sehara-Fujisawa A.
    • Journal Title

      Cell Rep

      Volume: 29 Issue: 3 Pages: 603-616

    • DOI

      10.1016/j.celrep.2019.09.019

    • NAID

      120006731597

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] PDH-mediated metabolic flow is critical for skeletal muscle stem cell differentiation and myotube formation during regeneration in mice2019

    • Author(s)
      Hori Shimpei、Hiramuki Yosuke、Nishimura Daigo、Sato Fuminori、Sehara-Fujisawa Atsuko
    • Journal Title

      The FASEB Journal

      Volume: - Issue: 7 Pages: 8094-8109

    • DOI

      10.1096/fj.201802479r

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 骨格筋の重力/無重力応答に関する研究2020

    • Author(s)
      佐藤文規、瀬原淳子
    • Organizer
      第59回生体医工学会大会 シンポジウム「宇宙に生き、地上で活かす」
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 骨格筋の抗重力について考える2020

    • Author(s)
      瀬原淳子
    • Organizer
      分子生物学会 フォーラム「骨格筋細胞研究がリードする新しい健康科学の分子生物学新機軸」
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Improving under-sampled imaging data quality in live tissue imaging.2019

    • Author(s)
      Sogabe M, Ohzeki M, Sehara-Fujisawa A
    • Organizer
      Focus on Microscopy 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Roles of a transcription factor 19A in the osteoblast development of sternum2019

    • Author(s)
      Kuriki M, Sato F, Sumiyama K, Kawakami K, Sehara-Fujisawa A.
    • Organizer
      ECTS (European Calcified Tissue Society)2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Metabolic flow from glycolysis to TCA cycle is critical for skeletal muscle stem cell differentiation and myotube formation during regeneration in mice2019

    • Author(s)
      Hori S, Hiramuki Y, Nishimura D, Sato F, Sehara-Fujisawa A
    • Organizer
      2019 Myogenesis Gordon Research Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 骨格筋衛星細胞の維持・分化における糖代謝制御の重要性2019

    • Author(s)
      瀬原淳子、堀新平、平向洋介、西邨大吾、佐藤文規
    • Organizer
      日本筋学会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 宇宙滞在の骨格筋維持への影響を探る2019

    • Author(s)
      瀬原淳子
    • Organizer
      日本宇宙生物科学会第33回大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ゼブラフィッシュ運動神経におけるBACE1活性の可視化2019

    • Author(s)
      鶴谷雅文、佐藤文規、田渕麻衣、川上浩一、瀬原淳子
    • Organizer
      第42回日本分子生物学会
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2024-01-30  

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