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The role of skeletal muscle-derived phenomena in exercise-independent increases in skeletal muscle mass

Research Project

Project/Area Number 21K11276
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 59010:Rehabilitation science-related
Research InstitutionSeijoh University

Principal Investigator

Ohno Yoshitaka  星城大学, リハビリテーション学部, 准教授 (80440808)

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: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords細胞・組織 / 骨格筋 / 筋肥大
Outline of Research at the Start

骨格筋増量法の代表は運動であるが、運動困難者のための新たな筋増量法が望まれる。そこで本研究では、筋由来の現象(熱産生、乳酸分泌)に着目し、新たな筋増量法の基盤を確立することを目的とする。運動の影響を除外するために培養骨格筋細胞を用い、筋の同化作用を促進する安全な温熱刺激条件と乳酸刺激条件、ならびに温熱刺激と乳酸刺激の組合せ刺激による筋の同化応答への影響を検討する。

Outline of Final Research Achievements

The purpose of this study was to investigate the effects of heat and/or lactate stimulation conditions on the anabolic regulation of skeletal muscle mass using cell culture system. Mouse myoblast-derived C2C12 cells were used and differentiated to form myotubes. During the differentiation phase, heat stimulation increased the myotube diameter and the protein content in C2C12 cells. The effect of heat stimulation on muscle mass may depend on the duration of the stimulation. Mild lactate stimulation promoted the differentiation of C2C12 cells. The combination of heat and lactate stimulation upregulated anabolic intracellular signaling. These observations suggest that the combined heat and lactate stimulation may activate protein synthesis and increase muscle anabolism more than either stimulation alone.

Academic Significance and Societal Importance of the Research Achievements

本研究は筋由来の現象である熱産生と乳酸分泌に着目し、温熱刺激と乳酸刺激およびその組合せ刺激による筋の同化応答への影響を検討したものである。組合せ刺激はそれぞれの単独刺激よりも筋同化応答を促進する可能性が考えられた。生体内では温熱刺激と乳酸刺激の組合せ刺激のように、複数の筋由来の現象が相互に作用して筋増量に影響を及ぼすと考えられる。本研究の成果は、運動に代わる新たな筋増量法の開発に有益な情報となると考える。

Report

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

    (4 results)

All 2023 2022

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

  • [Journal Article] Activation of Lactate Receptor Positively Regulates Skeletal Muscle Mass in Mice2023

    • Author(s)
      Ohno Y、Nakatani M、Ito T、Matsui Y、Ando K、Suda Y、Ohashi K、Yokoyama S、Goto K
    • Journal Title

      Physiological Research

      Volume: 72 Pages: 465-473

    • DOI

      10.33549/physiolres.935004

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 骨格筋培養細胞の増殖と分化に影響を及ぼす熱刺激条件の検討2023

    • Author(s)
      大野善隆,宮脇拓海,小川晃世,杉崎智哉,大橋和也,中谷直史
    • Organizer
      第28回日本基礎理学療法学会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 骨格筋における乳酸受容体の活性化とERKシグナルの応答2022

    • Author(s)
      大野善隆,中谷直史,伊藤貴史,松井佑樹,安藤孝輝,須田陽平,大橋和也,横山真吾,後藤勝正
    • Organizer
      第77回日本体力医学会大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Lactate positively modulates skeletal muscle mass in mice regardless of loading condition2022

    • Author(s)
      Yoshitaka Ohno,Masashi Nakatani,Yohei Suda,Koki Ando,Yuki Matsui,Takafumi Ito,Kazuya Ohashi,Shingo Yokoyama,Katsumasa Goto
    • Organizer
      22nd IUNS-ICN International Congress of Nutrition in Tokyo, Japan
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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

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