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Role of Neurexin in slit diaphragm of podocyte

Research Project

Project/Area Number 20K08587
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53040:Nephrology-related
Research InstitutionNiigata University

Principal Investigator

Fukusumi Yoshiyasu  新潟大学, 医歯学系, 准教授 (20609242)

Co-Investigator(Kenkyū-buntansha) 内許 玉楓  新潟大学, 医歯学系, 助教 (00529472)
安田 英紀  新潟大学, 医歯学系, 助教 (00806490)
河内 裕  新潟大学, 医歯学系, 教授 (60242400)
Project Period (FY) 2020-04-01 – 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: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsポドサイト / スリット膜 / Neurexin / Nephrin / Podocin / CD2AP / 蛋白尿 / シナプス小胞 / neurexin / ネフローゼ症候群 / Par6 / synaptotagmin / SV2B / nephrin
Outline of Research at the Start

Neurexin-1のスリット膜のバリア機能維持における役割を解析する。具体的には、①ノックアウト(KO)マウスを用いたスリット膜の形成、維持におけるNeurexin-1の役割の解析、②Neurexin-1と既知のスリット膜分子との相互作用の解析、③RNA silencing 法によりNeurexin-1発現をノックダウンさせた培養ポドサイトを用いたNeurexin-1のポドサイトの形態維持、突起形成における役割の解析、④次世代シーケンサを用いた発現解析による新規Neurexin-1関連分子の同定、同定された分子群のNeurexin-1との相互作用、機能解析を行う。

Outline of Final Research Achievements

We have previously reported Neurexin1 localizes at slit diaphragm of the glomerular podocyte, and is downregulated in injured podocytes. However, the role of Neurexin1 at slit diaphragm is unclear. We show that Neurexin1 knockout mice displayed alteration of the podocyte morphology, disarrangement of the slit diaphragm molecules such as nephrin, CD2AP and podocin, and proteinuria. The interaction assay with rat glomerular lysates showed that Neurexin-1 interacted with slit diaphragm molecules such as nephrin, CD2AP and podocin. The immunoprecipitation assay with the HEK cell expression systems showed Neurexin1 containing splicing site (SS)4 interacted with nephrin, CD2AP and podocin. but Neurexin1 lacking SS4 did not. It is also found that Neurexin1 is important for the maintenance of podocyte cell morphology and the formation of foot processes. These results suggest that Nereuxin1 contributes to maintenance of the function and the molecular integrity of slit diaphragm.

Academic Significance and Societal Importance of the Research Achievements

蛋白尿は腎疾患の最も重要な症候であるだけでなく、慢性腎臓病を進行させる悪化因子でもある。蛋白尿は腎糸球体上皮細胞(ポドサイト)の細胞間接着装置であるスリット膜のバリア機能の低下により発症すると考えられているが、その発症メカニズムは不明である。本研究で、スリット膜のバリア機能維持におけるNeurexin1の役割を明らかにし、Neurexin1の発現低下がスリット膜のバリア機能障害に関与していることを見出した。本研究成果は、スリット膜の分子構造、機能維持機構の解明だけでなく、Neurexin1を標的とした蛋白尿に対する新規治療法の開発につながると考える。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (29 results)

All 2024 2023 2022 2021 2020 Other

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (22 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results) Remarks (1 results)

  • [Journal Article] 14-3-3 Proteins stabilize actin and vimentin filaments to maintain processes in renal glomerular podocyte2023

    • Author(s)
      Yasuda Hidenori、Fukusumi Yoshiyasu、Zhang Ying、Kawachi Hiroshi
    • Journal Title

      The FASEB Journal

      Volume: 37 Issue: 10 Pages: 1-22

    • DOI

      10.1096/fj.202300865r

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Th17 Cells Participate in Thy1.1 Glomerulonephritis Which Is Ameliorated by Tacrolimus2022

    • Author(s)
      Watanabe Syuhei、Zhang Ying、Fukusumi Yoshiyasu、Yasuda Hidenori、Takada Akira、Kazama Junichiro J.、Kawachi Hiroshi
    • Journal Title

      American Journal of Nephrology

      Volume: 12 Issue: 5 Pages: 1-9

    • DOI

      10.1159/000524111

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tacrolimus ameliorates podocyte injury by restoring FK506 binding protein 12 (FKBP12) at actin cytoskeleton2021

    • Author(s)
      Yasuda Hidenori、Fukusumi Yoshiyasu、Ivanov Veniamin、Zhang Ying、Kawachi Hiroshi
    • Journal Title

      The FASEB Journal

      Volume: 35 Issue: 11 Pages: 1-19

    • DOI

      10.1096/fj.202101052r

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Synbindin Downregulation Participates in Slit Diaphragm Dysfunction2021

    • Author(s)
      Ivanov Veniamin、Fukusumi Yoshiyasu、Zhang Ying、Yasuda Hidenori、Kitazawa Meiko、Kawachi Hiroshi
    • Journal Title

      American Journal of Nephrology

      Volume: 52 Issue: 8 Pages: 620-629

    • DOI

      10.1159/000517975

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Nephrin-Ephrin-B1-NHERF2-Ezrin-Actin Axis Is Critical in Podocyte Injury2021

    • Author(s)
      Fukusumi Yoshiyasu、Yasuda Hidenori、Zhang Ying、Kawachi Hiroshi
    • Journal Title

      The American Journal of Pathology

      Volume: - Issue: 7 Pages: 00152-8

    • DOI

      10.1016/j.ajpath.2021.04.004

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Xanthine oxidoreductase inhibitor topiroxostat ameliorates podocyte injury by inhibiting the reduction of nephrin and podoplanin2021

    • Author(s)
      Zhang Ying、Fukusumi Yoshiyasu、Kayaba Mutsumi、Nakamura Takashi、Sakamoto Ryusuke、Ashizawa Naoki、Kawachi Hiroshi
    • Journal Title

      Nefrologia

      Volume: - Issue: 5 Pages: 539-547

    • DOI

      10.1016/j.nefro.2020.10.011

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] TRPM4の発現、機能低下とその結果生じるTRPC6発現増強、Ca2+流入の増加はポドサイト傷害の重要な初期変化である2024

    • Author(s)
      内許玉楓、福住好恭、安田英紀、常国慶、萱場睦、河内裕
    • Organizer
      第67回日本腎臓学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 抗ネフリン抗体検出簡便法の確立:免疫組織学的手法との感度比較2024

    • Author(s)
      萱場睦、内許玉楓、福住好恭、永井隆、常国慶、河内裕
    • Organizer
      第67回日本腎臓学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Neurexin1αは細胞外部でNephrin、細胞質部でPodicin、CD2APと結合しスリット膜の構造、バリア機能維持に寄与する2023

    • Author(s)
      福住好恭、内許玉楓、安田英紀、河内裕
    • Organizer
      第66回日本腎臓学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 14-3-3蛋白質は細胞骨格とPar複合体の調節によってポドサイトの細胞突起を維持する2023

    • Author(s)
      安田英紀、福住好恭、内許玉楓、河内裕
    • Organizer
      第66回日本腎臓学会
    • Related Report
      2023 Annual Research Report 2022 Research-status Report
  • [Presentation] 14-3-3 proteins stabilize vimentin and actin filaments to maintain primary and foot processes in podocyte2023

    • Author(s)
      Hidenori Yasuda, Yoshiyasu Fukusumi, Ying Zhang, Hiroshi Kawachi
    • Organizer
      アメリカ腎臓学会
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Downregulation of TRPM4 and consequent increase in TRPC6 activity are critical initiation events leading to podocyte injury2023

    • Author(s)
      Ying Zhang, Yoshiyasu Fukusumi, Hidenori Yasuda, Mutsumi Kayaba, Hiroshi Kawachi
    • Organizer
      アメリカ腎臓学会
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Neurexin1αは細胞外部でNephrin、細胞質部でPodicin、CD2APと結合しスリット膜の構造、バリア機能維持に寄与する2023

    • Author(s)
      福住好恭、張瑩、安田英紀、河内裕
    • Organizer
      第66回日本腎臓学会
    • Related Report
      2022 Research-status Report
  • [Presentation] Ephrin-B1はPar-6-Cdc42結合を阻害しtight junction形成の抑制、スリット膜の維持に働く2022

    • Author(s)
      福住好恭、張瑩、安田英紀、河内裕
    • Organizer
      第65回日本腎臓学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 腎糸球体における14-3-3 isoformsの機能解析2022

    • Author(s)
      安田英紀、福住好恭、内許玉楓、河内裕
    • Organizer
      第65回日本腎臓学会
    • Related Report
      2022 Research-status Report
  • [Presentation] Nephrin-Ephrin-B1-Par6 Complex Is Crucial for Slit Diaphragm in Podocytes: Ephrin-B1 Suppresses Tight Junction Formation by Interfering With Par-6-Cdc42 Binding2022

    • Author(s)
      Yoshiyasu Fukusumi, Ying Zhang, Hidenori Yasuda, Hiroshi Kawachi
    • Organizer
      アメリカ腎臓学会
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] A unique variant of neurexin-1α containing the splicing site #1, 3, 4, 5 is expressed at slit diaphragm of glomerular podocyte and interacts with nephrin2022

    • Author(s)
      Yoshiyasu Fukusumi, Hidenori Yasuda, Ying Zhang, Hiroshi Kawachi
    • Organizer
      国際腎臓学会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ephrin-B1はPar-6-Cdc42結合を阻害しTJ形成の抑制、スリット膜維持に働く2022

    • Author(s)
      福住好恭、安田英紀、張瑩、河内裕
    • Organizer
      第65回日本腎臓学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 腎糸球体における14-3-3 isoformsの機能解析2022

    • Author(s)
      安田英紀、福住好恭、張瑩、河内裕
    • Organizer
      第65回日本腎臓学会
    • Related Report
      2021 Research-status Report
  • [Presentation] NHERF2はスリット膜の分子複合体とポドサイト頂部の分子複合体を連結し、ポドサイトの細胞骨格を維持する2021

    • Author(s)
      福住好恭、安田英紀、張瑩、河内裕
    • Organizer
      第64回日本腎臓学会
    • Related Report
      2021 Research-status Report 2020 Research-status Report
  • [Presentation] スプライスサイト4を持つNeurexin1αバリアントはスリット膜構造の維持に重要な役割を果たす2021

    • Author(s)
      福住好恭、安田英紀、張瑩、河内裕
    • Organizer
      第64回日本腎臓学会
    • Related Report
      2021 Research-status Report 2020 Research-status Report
  • [Presentation] FKBP12は14-3-3、synaptopodinと結合し、ポドサイトのアクチン細胞骨格と細胞突起の維持に関与する2021

    • Author(s)
      安田英紀、福住好恭、張瑩、河内裕
    • Organizer
      第64回日本腎臓学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Neurexin1α containing splice site 4 interacts with nephrin and contributes to maintenance of theintegrity of podocyte slit diaphragm2021

    • Author(s)
      Yoshiyasu Fukusumi, Hidenori Yasuda, Ying Zhang, Hiroshi Kawachi
    • Organizer
      アメリカ腎臓学会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] FKBP12 interacts with 14-3-3 and synaptopodin to maintain actin cytoskeleton and processes in podocytes2021

    • Author(s)
      Hidenori Yasuda, Yoshiyasu Fukusumi, Ying Zhang, Hiroshi Kawachi
    • Organizer
      アメリカ腎臓学会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] FKBP12は14-3-3、Synaptopodinと結合し、ポドサイトのアクチン細胞骨格と細胞突起の維持に関与する2021

    • Author(s)
      安田英紀、福住好恭、張瑩、河内裕
    • Organizer
      第64回日本腎臓学会
    • Related Report
      2020 Research-status Report
  • [Presentation] PDZ蛋白質NHERF2はEphrin-B1とEzrinを連結させ、スリット膜機能維持に重要な役割を果たす2020

    • Author(s)
      福住好恭、安田英紀、張瑩、河内裕
    • Organizer
      第63回日本腎臓学会
    • Related Report
      2020 Research-status Report
  • [Presentation] タクロリムスはアクチン細胞骨格のFKBP12を保持する事でポドサイト傷害を軽減する2020

    • Author(s)
      安田英紀、福住好恭、張瑩、河内裕
    • Organizer
      第63回日本腎臓学会
    • Related Report
      2020 Research-status Report
  • [Presentation] 腎糸球体疾患とスリット膜2020

    • Author(s)
      福住好恭、張瑩、安田英紀、河内裕
    • Organizer
      第93回日本生化学学会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Remarks] 新潟大学腎研究センター腎分子病態学分野

    • URL

      https://www.med.niigata-u.ac.jp/nim/welcomej.html

    • Related Report
      2023 Annual Research Report 2022 Research-status Report 2021 Research-status Report 2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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