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Intercellular junctional molecules of podocytes maintaining glomerular structure

Research Project

Project/Area Number 16K09606
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Kidney internal medicine
Research InstitutionNiigata University

Principal Investigator

YAOITA EISHIN  新潟大学, 医歯学系, 准教授 (00157950)

Co-Investigator(Kenkyū-buntansha) 吉田 豊  新潟大学, 医歯学総合研究科, 客員研究員 (40182795)
小谷 典弘  埼玉医科大学, 医学部, 准教授 (90342782)
Research Collaborator TAKIMOTO yuki  
NAMETA masaaki  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsポドサイト / EMARS / 細胞間接着分子 / 培養細胞 / 培養ポドサイト / 腎臓 / 細胞間接着装置 / 膜タンパク質
Outline of Final Research Achievements

Visceral epithelial cells of renal glomeruli, referred to as podocytes, form the outermost layer of the glomerulus. Podocytes bear the tensional forces generated in the glomerular capillary wall to produce the bulk flow of the glomerular filtrate. Not only podocytes per se but also their intercellular junctions (ICJs) should be physically stable against the tensional forces. We hypothesized that previously reported molecules are not enough for the tensional forces. In this study, applying a recently developed method termed enzyme-mediated activation of radical source (EMARS), we performed an in-depth mass spectrometry (MS)-based proteome analysis to find new molecules involved in ICJs of podocytes. Consequently, we have found that cadherin EGF LAG seven-pass G-type receptor 1 (CELSR1) is expressed at cell-cell contact sites of podocytes.

Academic Significance and Societal Importance of the Research Achievements

腎臓の重要な役割は、尿を作ることによって生命維持に不可欠な体液の恒常性を保つことである。血液から原尿を濾し出す場が腎糸球体であり、ポドサイトはその高い濾過圧に耐えなければいけない。我々は、これまでに報告されている細胞間接着分子だけでは、圧負荷に耐える構造として不十分であると考えている。本研究は、新たにCelsr1という分子が存在することを示し、学術的にも意義があると考えられる。慢性腎臓病の主な原因にポドサイト傷害がある。そのため、ポドサイトの圧負荷を含むストレスに耐える機序を理解することは、ポドサイト障害を防ぎ、慢性腎臓の伸展を防ぐうえで社会的な意義があると考えている。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (10 results)

All 2018 2017 2016

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (7 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] A novel splicing variant of small nucleolar RNA host gene 4 is a podocyte-selective non-coding RNA upregulated in response to puromycin aminonucleoside-induced podocyte injury2018

    • Author(s)
      Horikawa Aya、Yoneda Tomomi、Yaoita Eishin、Yamaguchi Katsushi、Shigenobu Shuji、Kuramochi Mizuki、Yamate Jyoji、Inui Takashi、Ishibashi Osamu
    • Journal Title

      The Journal of Biochemistry

      Volume: 165 Issue: 5 Pages: 447-454

    • DOI

      10.1093/jb/mvy118

    • NAID

      120006895714

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Induction of interdigitating cell processes in podocyte culture.2018

    • Author(s)
      Yaoita E, Yoshida Y, Nameta M, Takimoto H, Fujinaka H.
    • Journal Title

      Kidney Int.

      Volume: 93 Issue: 2 Pages: 519-520

    • DOI

      10.1016/j.kint.2017.06.031

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Restricted nutrition-induced low birth weight, low number of nephrons and glomerular mesangium injury in Japanese quail.2017

    • Author(s)
      Nishimura H, Yaoita E, Nameta M, Yamaguchi K, Sato M, Ihoriya C, Zhao L, Kawachi H, Sasaki T, Ikezumi Y, Ouchi Y, Kashihara N, Yamamoto T.
    • Journal Title

      J Dev Orig Health Dis.

      Volume: 8 Issue: 3 Pages: 287-300

    • DOI

      10.1017/s2040174416000787

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Delayed Body Growth and Structural Defects Originate in Mechanical Stress Imposed during Early Embryonic Life2018

    • Author(s)
      Hiroko Nishimura, Eishin Yaoita, Maria Luisa S. Sequeira-Lopez, R. Ariel Gomez
    • Organizer
      第7回日本DOHaD学会学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 培養におけるポドサイトとボウマン嚢上皮細胞の比較2018

    • Author(s)
      大山富三、矢尾板永信、吉田豊
    • Organizer
      第61回日本腎臓学会学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 培養ポドサイトの細胞突起誘導と発生の共通性2017

    • Author(s)
      矢尾板永信、深津俊介、吉田豊、瀧本裕基
    • Organizer
      第60回日本腎臓学会学術総会
    • Related Report
      2017 Research-status Report
  • [Presentation] Stress and insufficient nutrition program abnormal growth of the embryo2017

    • Author(s)
      Hiroko Nishimura, Eishin Yaoita, Maria Luisa Sequeira Lopez, Ariel Gomez
    • Organizer
      Experimental Biology 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Induction of Interdigitating Cell Processes in Cultured Podocytes2016

    • Author(s)
      矢尾板永信、吉田豊、瀧本裕基
    • Organizer
      アメリカ腎臓学会総会
    • Place of Presentation
      アメリカ合衆国、シカゴ、McCormick Place
    • Year and Date
      2016-11-16
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] EMARS法を用いたポドサイトの細胞間接着装置の網羅的解析2016

    • Author(s)
      瀧本裕基、河内裕、吉田豊、矢尾板永信
    • Organizer
      第59回日本腎臓学会学術総会
    • Place of Presentation
      横浜、神奈川県、パシフィコ横浜 会議センター
    • Year and Date
      2016-06-17
    • Related Report
      2016 Research-status Report
  • [Presentation] 培養ポドサイトにおける一次突起の誘導2016

    • Author(s)
      矢尾板永信、吉田豊、瀧本裕基
    • Organizer
      第59回日本腎臓学会学術総会
    • Place of Presentation
      横浜、神奈川県、パシフィコ横浜 会議センター
    • Year and Date
      2016-06-17
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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