• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Elucidation of appropriate excersice protocol through AMPK/OGT crosstalk in T2B

Research Project

Project/Area Number 20K11352
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 InstitutionOsaka Medical and Pharmaceutical University

Principal Investigator

Nakagawa Takatoshi  大阪医科薬科大学, 医学部, 非常勤講師 (70359842)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsExercise / オートファジー / AMPK/OGTクロストーク / 運動療法
Outline of Research at the Start

運動療法は、食事療法、薬物療法と並んで糖尿病治療の中心的存在である。運動により活性化したAMP-activated kinase (AMPK)がインスリン抵抗性を改善することが治療効果の中心分子である。糖尿病ではタンパク質のO-β-N-acetylglucosamine (O-GlcNAc)化が増加し、病因となっている。近年、AMPKと O-GlcNAc修飾を触媒するO-GlcNAc転移酵素(OGT)は相互に基質となり、お互いの機能を正負に制御するクロストークが明らかとなった。AMPKが最大限効果を発揮できるように、OGT活性とのバランスをとることが出来れば治療効果を上げることが出来る。

Outline of Final Research Achievements

Exercise is one of the most important therapies for diabetes, especially type 2 diabetes, T2B. Appropriate exercise decreases blood sugar through activation of AMP-activated kinase (AMPK) in an insulin independent manner. On the other hand, increased protein O-β-N-acetylglucosamine (O-GlcNAcylation) caused by high blood sugar aggravates pathogenesis of T2B. The aim of the study was to gain insight into the role of AMPK/OGT crosstalk in exercise therapy of T2B and find a way to maximize it. Achievements of the research are: 1. Establishment of in vitro assay of membrane translocation of Glut 4 using mouse myoblast cell line, C2C12 cells, by evaluating the effect of exercise with treadmill using mice on AMPK/OGT crosstalk and autophagy, then 2. Identification of autophagy in this system, 3.Induction of autophagy by appropriate exercise with treadmill using mice, which was cancelled with Thiamet G, OGA inhibitor.

Academic Significance and Societal Importance of the Research Achievements

運動療法は、中心的なT2B治療である。今回、細胞の栄養センサーと呼ばれるAMPKと高血糖から引き起こされるタンパク質O-GlcNAc との関連、AMPK/O-GlcNAcクロストークの一端をin vivo運動負荷モデルにおいて観察できたことは、学術的に有意義なことである。さらなる研究が必要ではあるが、AMPK/O-GlcNAcクロストークを人工的に制御することが出来れば、現在、1000万人弱の糖尿病患者(予備群にを含めるとその倍以上いると考えられる)にとって朗報となるのみならず、社会保険的意義も非常に高いと考えられる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (5 results)

All 2022 2021 2020

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

  • [Journal Article] Augmented O-GlcNAcylation exacerbates right ventricular dysfunction and remodeling via enhancement of hypertrophy, mitophagy, and fibrosis in mice exposed to long-term intermittent hypoxia2022

    • Author(s)
      Yokoe Shunichi、Hayashi Tetsuya、Nakagawa Takatoshi、Kato Ryuji、Ijiri Yoshio、Yamaguchi Takehiro、Izumi Yasukatsu、Yoshiyama Minoru、Asahi Michio
    • Journal Title

      Hypertension Research

      Volume: 46 Issue: 3 Pages: 667-678

    • DOI

      10.1038/s41440-022-01088-8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dermal Papilla Cell-Derived Extracellular Vesicles Increase Hair Inductive Gene Expression in Adipose Stem Cells via β-Catenin Activation2022

    • Author(s)
      Kazi Taheruzzaman、Nagata Abir、Nakagawa Takatoshi、Matsuzaki Takashi、Inui Shigeki
    • Journal Title

      Cells

      Volume: 11 Issue: 2 Pages: 202-202

    • DOI

      10.3390/cells11020202

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Enhancement of O-linked N-acetylglucosamine modification promotes metastasis in patients with colorectal cancer and concurrent type 2 diabetes mellitus2020

    • Author(s)
      Naka Yutaka、Okada Toshihiko、Nakagawa Takatoshi、Kobayashi Eiko、Kawasaki Yuka、Tanaka Yasuyoshi、Tawa Hideki、Hirata Yuki、Kawakami Ken、Kakimoto Kazuki、Inoue Takuya、Takeuchi Toshihisa、Fukunishi Shinya、Hirose Yoshinobu、Uchiyama Kazuhisa、Asahi Michio、Higuchi Kazuhide
    • Journal Title

      Oncology Letters

      Volume: 20 Issue: 2 Pages: 1171-1178

    • DOI

      10.3892/ol.2020.11665

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] AMPK活性化プロテインキナーゼ/O-GlcNAc転移酵素クロストークの役割解明2021

    • Author(s)
      長濱渚、中川孝俊、朝日通雄
    • Organizer
      第139回日本薬理学会近畿部会
    • Related Report
      2021 Research-status Report
  • [Presentation] オートファジーによるNSAIDs誘因小腸傷害治療戦略2021

    • Author(s)
      白川誠、中川孝俊、朝日通雄
    • Organizer
      第139回日本薬理学会近畿部会
    • Related Report
      2021 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi