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Role of protein O-GlcNAcylation in pathogenesis of diabetic kidney disease

Research Project

Project/Area Number 19K08724
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53040:Nephrology-related
Research InstitutionShiga University of Medical Science

Principal Investigator

Kanasaki Masami  滋賀医科大学, 医学部, 講師 (30402720)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords腎臓病 / 糖鎖修飾 / 糖尿病性腎症 / 肥満関連腎臓病 / 絶食 / 糖尿病性腎臓病 / 脂肪毒性 / 栄養
Outline of Research at the Start

我が国における透析導入原疾患1位である糖尿病性腎症(DKD)の克服は急務な研究課題である。DKDは高血糖に起因した細胞内代謝異常が一成因となるがその詳細はわかっていない。本研究では、細胞内タンパク質に対するO-GlcNAc修飾の腎臓におおける生理的役割、ならびに、DKD病態とのかかわりを検討することで、O-GlcNAc修飾を標的とした新規DKD治療の可能性を探索する。

Outline of Final Research Achievements

The increasing prevalence of obesity-related kidney disease and diabetic nephropathy due to the increasing number of obese patients is one of the most pressing issues in Japan that must be resolved. In this study, we investigated the physiological role of O-GlcNAcylation, one of the post-translational modifications of proteins, in the kidney and whether its regulation could be a new therapeutic target for kidney disease. The results revealed that the O-GlcNAcylation is essential for ATP production via fatty acid burning during fasting in renal proximal tubular cells, and that its abnormalities contribute to the pathogenesis of renal injury in obesity and diabetic conditions.

Academic Significance and Societal Importance of the Research Achievements

肥満患者数の増加に伴う腎臓病患者数の増加に対する新たな治療法が求められている。本研究では、腎臓におけるO-GlcNac修飾が腎臓におけるエネルギー代謝の中枢を担うメカニズムであり、その異常が肥満や糖尿病を背景とする腎臓病の発症進展に寄与することが明らとなった。今後の研究の発展により、O-GlcNac修飾を標的とした新規腎臓病治療の開発が期待される。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (2 results)

All 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (1 results)

  • [Journal Article] Protein O-GlcNAcylation Is Essential for the Maintenance of Renal Energy Homeostasis and Function via Lipolysis during Fasting and Diabetes2019

    • Author(s)
      Sugahara S, Kume S, Chin-Kanasaki M, Tomita I, Yasuda-Yamahara M, Yamahara K, Takeda N, Osawa N, Yanagita M, Araki SI, Maegawa H.
    • Journal Title

      Journal of the American Society of Nephrology

      Volume: In press Issue: 6 Pages: 962-978

    • DOI

      10.1681/asn.2018090950

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 腎臓近位尿細管のO-GlcNAc修飾依存的脂肪酸代謝に着目した新規糖尿病性腎臓病治療標的の探索2019

    • Author(s)
      菅原 翔, 久米 真司, 山原 真子, 山原 康佑, 武田 尚子, 大澤 紀之, 金崎 雅美, 柳田 素子, 荒木 信一, 前川 聡
    • Organizer
      第62回日本糖尿病学会年次学術集会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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