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New candidate for prevention of type 2 daiabetes focus on skeletal muscle glucose metabolism signaling

Research Project

Project/Area Number 21K11466
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 59020:Sports sciences-related
Research InstitutionKobe University

Principal Investigator

Sato Koji  神戸大学, 人間発達環境学研究科, 准教授 (20584022)

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: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords糖尿病 / 骨格筋 / 糖代謝 / オンコスタチンM受容体 / 炎症 / 2型糖尿病 / 肥満症 / 性ステロイドホルモン / 免疫調節システム / 予防 / 性ステロイド / 運動 / 栄養
Outline of Research at the Start

申請者はこれまでに、糖尿病モデルラットにおいて、運動後の血糖値の低下に炎症反応を制御するオンコスタチンM(OSM)の増加が骨格筋糖代謝調節経路の活性化に関与していることを網羅解析により明らかにしている。本研究では、血中の性ステロイドホルモン濃度を増加させる運動トレーニング並びに性ステロイドホルモンの前駆体であるDHEA摂取が、OSMの増加を介して2型糖尿病の予防・改善に関与していると仮説を立て、骨格筋細胞培養を用いて仮説検証し、肥満症・2型糖尿病予防のための新たな生活習慣の改善策を提示する。本研究の成果は、超高齢社会における医療費削減、健康寿命延伸という社会的課題の解決への展開が期待される。

Outline of Final Research Achievements

The aim of the present study was to investigate the effects of OSMR subunit gp130 knockdown on insulin-stimulated glucose metabolism-related signaling pathways and glucose uptake in skeletal muscle cells. siRNA-mediated gp130 knockdown was conducted in C2C12 muscle cells, and insulin was added and incubated for 1 h. The cells were cultivated to analyze the mRNA levels of gp130, phosphorylation of STAT3, and glucose metabolism-regulated signaling pathways, and OSM levels in the culture medium were analyzed. PI3-kinase activity and Akt Thr 308 phosphorylation were significantly decreased in gp130-/-. The insulin-stimulated increase in glucose uptake rate was significantly attenuated in gp130-/-. In the culture medium, OSM levels were significantly lower in gp130+/+ compared to gp130-/- cell. In conclusion, the knockdown of gp130 caused a decrease in STAT 3 phosphorylation and resulted in the attenuation of insulin-mediated glucose metabolism signaling in skeletal muscle cells.

Academic Significance and Societal Importance of the Research Achievements

本研究では、運動トレーニングによる2型糖尿病予防に向けた新規骨格筋糖代謝調節経路を確立するために、OSMRサブユニットgp130の遺伝子欠損がSTAT3の活性を抑制し骨格筋糖代謝調節経路の活性を抑制するか否かを明らかにすることを目的とした。これまで、OSMの過剰発現は癌細胞の増殖や、肝疾患、自己免疫疾患の発症に関連するという報告がなされてきたが、2型糖尿病における骨格筋糖代謝不全との関連を示す研究は行われてこなかった。本研究で、新規の骨格筋糖代謝調節機構を同定し、さらに、本研究の結果から、今後、肥満症や2型糖尿病発症予防に向けた、運動・栄養介入法の分子基盤が確立される可能性がある。

Report

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

    (9 results)

All 2024 2023 2022 Other

All Int'l Joint Research (1 results) Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (3 results) (of which Invited: 2 results)

  • [Int'l Joint Research] アデレード大学(オーストラリア)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Altered expression of synaptic proteins and adhesion molecules in the hippocampus and cortex following the onset of diabetes in nonobese diabetic mice2023

    • Author(s)
      Yokokawa Takumi、Kido Kohei、Sato Koji、Hayashi Tatsuya、Fujita Satoshi
    • Journal Title

      Physiological Reports

      Volume: 11 Issue: 8

    • DOI

      10.14814/phy2.15673

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The effect of Dioscorea esculenta powder on prostaglandin E2 and cytochrome c oxidase subunit 2 levels, menstrual pain, and premenstrual syndrome in young women: A randomized double-blind controlled trial.2022

    • Author(s)
      Koji Sato, Kaori Seto
    • Journal Title

      Nutrition and Health

      Volume: 26 Issue: 3 Pages: 889-889

    • DOI

      10.1177/02601060221130889

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Emotional valence of self-defining memories in older adults: A longitudinal study2022

    • Author(s)
      Kouhei Masumoto, Koji Sato, Kazuhiro Harada, Kenta Yamamoto, Mariko Shiozaki
    • Journal Title

      Consciousness and Cognition

      Volume: 106 Pages: 103431-103431

    • DOI

      10.1016/j.concog.2022.103431

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Oral chronic sulforaphane effects on heavy resistance exercise: Implications on inflammatory and muscle damage parameters in young practitioners.2022

    • Author(s)
      Sato K, Kihara H, Kumazawa Y, Tatara K.
    • Journal Title

      Nutrition

      Volume: 90 Pages: 111266-111266

    • DOI

      10.1016/j.nut.2021.111266

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effects of acute aerobic exercise and menstrual cycle on immune responses in young women2022

    • Author(s)
      Koji Sato, Yoka Kumazawa, Tetsuya Kimura
    • Journal Title

      Gynecological and Reproductive Endocrinology & Metabolism

      Volume: 01 Pages: 27-31

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 運動・栄養による中高齢者の肥満・糖尿病予防に向けた基礎的研究2024

    • Author(s)
      佐藤 幸治
    • Organizer
      京都滋賀体育学会第153回大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 1型糖尿病患者における運動による遅発性低血糖発症機序と予防に向けた栄養介入2023

    • Author(s)
      佐藤 幸治
    • Organizer
      日本スポーツ栄養学会 第9回大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 1型糖尿病における中強度運動による遅発性低血糖の発症機序2022

    • Author(s)
      佐藤 幸治
    • Organizer
      第77回日本体力医学会
    • Related Report
      2022 Research-status Report

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

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