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Importance of motor neuron in determining muscle fiber types during muscle injury recovery

Research Project

Project/Area Number 21K05896
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 42010:Animal production science-related
Research InstitutionAzabu University

Principal Investigator

Sawano Shoko  麻布大学, 生命・環境科学部, 教授 (60403979)

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: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords損傷筋 / マウス / 筋線維 / 回復 / 筋損傷回復 / 筋萎縮 / 筋線維組成変化 / 筋損傷 / 筋肥大 / 運動神経 / ハイブリッド筋線維 / 骨格筋
Outline of Research at the Start

食肉の食味性を決定する上で、家畜の骨格筋線維タイプ組成は非常に重要な因子である。筋線維タイプは後天的に変化することが分かっているが、単一筋線維レベルでタイプ変化を遂げる際、筋線維を支配する運動神経がタイプ変化にどの程度影響を及ぼすのかほとんど分かっていない。筋線維は各々特定のタイプの運動神経からの支配を受けているため、線維タイプ移行成立の際にも各々のタイプに呼応する運動神経の再神経支配が必須であると予想される。そこで本研究では、筋損傷から骨格筋再生途上で増加する「ハイブリッド筋線維」の増加とその後の減少が坐骨神経切除によって影響を受けるか検討することで運動神経の役割を明らかにすることを目指す。

Outline of Final Research Achievements

Skeletal muscle has a high regenerative capacity and recovers quickly after injury. It is known that myofiber type composition can be altered by environmental factors such as exercise training. However, the involvement of myofiber type composition and motor innervation after muscle regeneration is still unknown. In this study, we investigated how myofiber type composition changes after muscle regeneration by observing myofiber type composition over time in the post-injury tibialis anterior muscle of mice with multiple types of induced muscle injury. We found that after injury, myofiber type composition transiently changed from 2B to 2X and returned to a composition similar to that of the non-injured zone over time. The relevance to motor neurons needs to be further investigated.

Academic Significance and Societal Importance of the Research Achievements

本成果は筋損傷後の回復過程における骨格筋再生について、その挙動の一端を明らかにしたものである。本研究成果を起点として、筋線維タイプの細胞レベルでの変化と、それに続く運動神経支配による筋線維タイプ移行機構のしくみが明らかになることで、将来的に、食味性の高い良質な食肉を創出できるだけでなく、ヒトにおいても高齢者の自立歩行のための筋持久力の向上など、様々な分野に応用されることが期待できる。

Report

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

    (14 results)

All 2024 2023 2022

All Journal Article (8 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 8 results,  Open Access: 8 results) Presentation (6 results)

  • [Journal Article] Eicosapentaenoic acid increases proportion of type1 muscle fibers through PPARδ and AMPK pathways in rats2024

    • Author(s)
      Komiya Yusuke、Sakazaki Yuka、Goto Tsuyoshi、Kawabata Fuminori、Suzuki Takahiro、Sato Yusuke、Sawano Shoko、Nakamura Mako、Tatsumi Ryuichi、Ikeuchi Yoshihide、Arihara Keizo、Mizunoya Wataru
    • Journal Title

      iScience

      Volume: - Issue: 6 Pages: 109816-109816

    • DOI

      10.1016/j.isci.2024.109816

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Type selective ablation of postnatal slow and fast fatigue-resistant motor neurons in mice induces late onset kinetic and postural tremor following fiber-type transition and myopathy2024

    • Author(s)
      Misawa Hidemi、Kamishima Kai、Koyama Tenkei、Ohgaki Lisa、Morisaki Yuta、Yamanaka Tomoyuki、Itohara Shigeyoshi、Sawano Shoko、Mizunoya Wataru、Ogihara Naomichi
    • Journal Title

      Experimental Neurology

      Volume: 376 Pages: 114772-114772

    • DOI

      10.1016/j.expneurol.2024.114772

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dietary oleic acid intake increases the proportion of type 1 and 2X muscle fibers in mice2024

    • Author(s)
      Komiya Yusuke、Iseki Shugo、Ochiai Masaru、Takahashi Yume、Yokoyama Issei、Suzuki Takahiro、Tatsumi Ryuichi、Sawano Shoko、Mizunoya Wataru、Arihara Keizo
    • Journal Title

      Scientific Reports

      Volume: 14 Issue: 1 Pages: 755-755

    • DOI

      10.1038/s41598-023-50464-y

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Age‐related nitration/dysfunction of myogenic stem cell activator HGF2023

    • Author(s)
      Elgaabari A, Imatomi N, Kido H, Nakashima T, Okuda S, Manabe Y, Sawano S, Mizunoya W, Kaneko R, Tanaka S, Maeno T, Matsuyoshi Y, Seki M, Kuwakado S, Zushi K, Daneshvar N, Nakamura M, Suzuki T, Sunagawa K, Anderson JE, Allen RE, Tatsumi R
    • Journal Title

      Aging Cell

      Volume: 23 Issue: 2

    • DOI

      10.1111/acel.14041

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Up- and Downregulated Genes after Long-Term Muscle Atrophy Induced by Denervation in Mice Detected Using RNA-Seq2023

    • Author(s)
      Sawano Shoko、Fukushima Misaki、Akasaka Taiki、Nakamura Mako、Tatsumi Ryuichi、Ikeuchi Yoshihide、Mizunoya Wataru
    • Journal Title

      Life

      Volume: 13 Issue: 5 Pages: 1111-1111

    • DOI

      10.3390/life13051111

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A pilot study on nitration/dysfunction of NK1 segment of myogenic stem cell activator HGF2022

    • Author(s)
      Elgaabari Alaa、Imatomi Nana、Kido Hirochika、Seki Miyumi、Tanaka Sakiho、Matsuyoshi Yuji、Nakashima Takashi、Sawano Shoko、Mizunoya Wataru、Suzuki Takahiro、Nakamura Mako、Anderson Judy E.、Tatsumi Ryuichi
    • Journal Title

      Biochemistry and Biophysics Reports

      Volume: 31 Pages: 101295-101295

    • DOI

      10.1016/j.bbrep.2022.101295

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Egg components reverse the atrophy induced by injury in skeletal muscles2022

    • Author(s)
      Sawano Shoko、Kobayashi Yuya、Maesawa Suzuka、Mizunoya Wataru
    • Journal Title

      Genes to Cells

      Volume: 27 Issue: 2 Pages: 138-144

    • DOI

      10.1111/gtc.12915

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] History and development of staining methods for skeletal muscle fiber types2022

    • Author(s)
      Shoko Sawano , Wataru Mizunoya
    • Journal Title

      Histology and histopathology

      Volume: 37 Pages: 493-503

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 牛肉の風味を構成する化合物群の分画および呈味性に関する研究2023

    • Author(s)
      久野萌花、森川里久、良永裕子、齊藤千佳、澤野祥子、竹田志郎、水野谷 航
    • Organizer
      日本畜産学会第131回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 筋幹細胞活性化因子HGFのニトロ化による不活化に関する研究: 抗HGFモノクローナル抗体のニトロ化抑制効果の検証2023

    • Author(s)
      田中咲帆、Alaa Elgaabari、圖師歌歩乃、澤野祥子、水野谷航、松吉祐児、鈴木 貴弘、中村真子、辰巳隆一
    • Organizer
      日本畜産学会第131回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 抗ミオシン重鎖モノクローナル抗体の精製と豚肉の筋線維タイプ組成の解析2023

    • Author(s)
      中村洸太、澤野祥子、竹田志郎、水野谷航
    • Organizer
      日本畜産学会第131回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] オレイン酸摂取はマウス骨格筋において 1および2X型筋線維を増加させる2023

    • Author(s)
      小宮佑介、伊関柊吾、鈴木貴弘、辰巳隆一、澤野祥子、水野谷航、長竿淳、有原圭三
    • Organizer
      第77回日本栄養食糧学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ショウガ成分の炎症・アレルギー抑制効果に関する研究2023

    • Author(s)
      澤野 祥子、豊田 来美、雑賀 健太、永月 翔、藤澤 莉沙
    • Organizer
      日本農芸化学会大会2023年度広島大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 鶏卵成分の骨格筋損傷回復及び筋萎縮抑制効果2022

    • Author(s)
      澤野 祥子、小林 佑哉、前澤 涼香、水野谷 航
    • Organizer
      日本農芸化学会2022年度大会
    • Related Report
      2021 Research-status Report

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

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