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The role of PDK1-FoxO signaling pathway in the development of podocyte injury

Research Project

Project/Area Number 21K08243
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53040:Nephrology-related
Research InstitutionNational Center for Global Health and Medicine

Principal Investigator

Ito Emi  国立研究開発法人国立国際医療研究センター, 研究所, 臓器障害研究部 研究員 (10889455)

Co-Investigator(Kenkyū-buntansha) 鏑木 康志  国立研究開発法人国立国際医療研究センター, その他部局等, 臓器障害研究部長 (40342927)
久保田 浩之 (卯木浩之)  国立研究開発法人国立国際医療研究センター, その他部局等, 室長 (40323290)
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: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords糖尿病関連腎臓病 / 糸球体上皮細胞 / 糖尿病性腎臓病
Outline of Research at the Start

糖尿病性腎症は透析導入疾患第一位であり、その成因を分子機序で解明し治療法や予防法を構築することは重要な課題である。そこで本研究では、インスリンシグナル伝達に関与する因子の一つであるphosphoinositide-dependent kinase-1 (PDK1)の糸球体上皮細胞特異的ノックアウトマウスを作製し、インスリンシグナル伝達系障害と糸球体上皮細胞障害との関連について検討する。本研究にて糸球体上皮細胞障害におけるインスリンシグナル伝達系の関与、およびそれを引き起こす分子基盤が解明されれば、糖尿病性腎症の新たな標的因子として新規薬剤開発、治療法の開発に貢献できる可能性がある。

Outline of Final Research Achievements

We generated podocyte-specific 3-phosphoinositide-dependent protein kinase 1 (PDK1) conditional knockout mice (Pod-PDK1 cKO) and tamoxifen-induced podocyte-specific PDK1 conditional knockout mice (NPHS2-CreERT2/Pod-PDK1 cKO) to investigate the role of PDK1 in podocytes. Podocyte foot process effacement was observed in both Pod-PDK1 cKO and NPHS2-CreERT2/Pod-PDK1 cKO mice, and the podocytes were shed into the urine with age. Both Pod-PDK1 cKO and NPHS2-CreERT2/Pod-PDK1 cKO mice also showed albuminuria and glomerulosclerosis in many glomerular regions with age. In conclusion, this study demonstrated that PDK1 plays an important role in maintaining podocyte function.

Academic Significance and Societal Importance of the Research Achievements

本研究成果により糸球体上皮細胞におけるPDK1欠失は糸球体上皮細胞障害や腎機能低下を引き起こすことが示され、PDK1が糸球体上皮細胞の機能維持に重要なシグナル分子であることが明らかとなった。さらなる詳細な検討によりPDK1欠失による糸球体上皮細胞障害の分子機序が解明されれば、糖尿病関連腎臓病の発症・進行予防に有用となる可能性がある。

Report

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

    (9 results)

All 2023 2022 2021 Other

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

  • [Journal Article] Hepatic FASN deficiency differentially affects nonalcoholic fatty liver disease and diabetes in mouse obesity models2023

    • Author(s)
      Matsukawa Toshiya、Yagi Takashi、Uchida Tohru、Sakai Mashito、Mitsushima Masaru、Naganuma Takao、Yano Hiroyuki、Inaba Yuka、Inoue Hiroshi、Yanagida Keisuke、Uematsu Masaaki、Nakao Kazuki、Nakao Harumi、Aiba Atsu、Nagashima Yoji、Kubota Tetsuya、Kubota Naoto
    • Journal Title

      JCI Insight

      Volume: 8 Issue: 17

    • DOI

      10.1172/jci.insight.161282

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Independent risk factors of rapid glomerular filtration rate decline in patients with type?2 diabetes with preserved kidney function and normoalbuminuria: A multicenter cohort study2023

    • Author(s)
      Hirano Daishi、Unoki‐Kubota Hiroyuki、Imasawa Toshiyuki、Yamamoto‐Honda Ritsuko、Kajio Hiroshi、Yamashita Shigeo、Fukazawa Yuka、Seki Naoto、Noda Mitsuhiko、Kaburagi Yasushi
    • Journal Title

      Journal of Diabetes Investigation

      Volume: 14 Issue: 7 Pages: 874-882

    • DOI

      10.1111/jdi.14011

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of the QIAstat-Dx Respiratory SARS-CoV-2 panel, a rapid multiplex PCR method for the diagnosis of COVID-192022

    • Author(s)
      Ishikane Masahiro、Unoki-Kubota Hiroyuki、Moriya Ataru、Kutsuna Satoshi、Ando Honami、Kaburagi Yasushi、Suzuki Tetsuya、Iwamoto Noriko、Kimura Moto、Ohmagari Norio
    • Journal Title

      Journal of Infection and Chemotherapy

      Volume: 28 Issue: 6 Pages: 729-734

    • DOI

      10.1016/j.jiac.2022.02.004

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Independent risk factors of rapid renal function decline in patients with type 2 diabetes with preserved kidney function2023

    • Author(s)
      Hiroyuki Unoki-Kubota, Daishi Hirano, Toshiyuki Imasawa, Ritsuko Yamamoto-Honda, Hiroshi Kajio, Shigeo Yamashita, Yuka Fukazawa, Naoto Seki, Mitsuhiko Noda, Yasushi Kaburagi
    • Organizer
      International Diabetes Federation Western Pacific Congress 2023 / 15th Asian Association for the Study of Diabetes Scientific Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] EXPLORATION OF PROGNOSTIC FACTORS IN DIABETIC NEPHROPATHY WITH NODULAR LESION USING TRANSCRIPTOME ANALYSIS OF HUMAN KIDNEY TISSUES2023

    • Author(s)
      Toshiyuki Imasawa, Hiroyuki Unoki-Kubota, Daishi Hirano, Hiroshi Kitamura, Yasushi Kaburagi
    • Organizer
      60th European Renal Association Congress European Renal Association
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of artus SARS-CoV-2 Prep&Amp UM Kit for SARS-CoV-2 Detection, a rapid direct PCR method for the diagnosis of COVID-192023

    • Author(s)
      M. Ishikane, Hiroyuki Unoki-Kubota, Ataru Moriya, Honami Ando, Yasushi Kaburagi, Noriko Iwamoto, Moto Kimura, Norio Ohmagari
    • Organizer
      33rd European Congress of Clinical Microbiology & Infectious Diseases
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 2型糖尿病患者における推算糸球体濾過量(eGFR)漸減関連因子の探索2022

    • Author(s)
      久保田浩之, 伊藤恵実, 平野大志, 今澤俊之, 梶尾裕, 山下滋雄, 深澤由香, 関直人, 鏑木康志
    • Organizer
      第65回日本糖尿病学会年次学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] Phosphoinositide-dependent kinase-1 の糸球体上皮細胞における役割の検討2021

    • Author(s)
      久保田浩之, 岩田和希子, 加藤秀樹, 松本道宏, 南学正臣, 春日雅人, 鏑木康志
    • Organizer
      第64回日本糖尿病学会年次学術集会
    • Related Report
      2021 Research-status Report
  • [Remarks] 国立国際医療研究センター 研究所 糖尿病研究センター 臓器障害研究部

    • URL

      http://www.ncgm-dmcomp.umin.jp/index.html

    • Related Report
      2023 Annual Research Report 2022 Research-status Report 2021 Research-status Report

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

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