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Tubulointerstitial lesion formation in chronic kidney disease mediated by renal adhesion molecule CADM1

Research Project

Project/Area Number 20K07434
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49030:Experimental pathology-related
Research InstitutionKindai University

Principal Investigator

Hagiyama Man  近畿大学, 医学部, 講師 (60632718)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords上皮変性・アポトーシス / 慢性腎臓病 / 接着分子 / 細胞外切断 / 尿細管間質病変 / 上皮変性 / 細胞外断片 / ELISA / 酵素的切断
Outline of Research at the Start

慢性腎臓病では尿細管上皮変性・炎症細胞浸潤・間質線維化より成る尿細管間質病変が生じ、その重篤化が不可逆的な腎機能障害を導くと認識されているが、本病態の分子機序解明は十分ではない。慢性腎臓病では尿細管上皮のIgCAM型接着分子CADM1(cell adhesion molecule 1)の細胞外切断が亢進し、上皮アポトーシスを誘導する。本研究では、皮質間質中に放出された切断産物が、マスト細胞や細胞障害性Tリンパ球を活性化し、炎症・線維化を惹起する責任因子となると考え、CADM1の細胞外切断が慢性腎臓病における尿細管間質病変形成に関与することを明らかにする。

Outline of Final Research Achievements

In chronic kidney disease (CKD), tubulointerstitial damage correlates with progressive decline in renal function, but it is difficult to monitor the severity without renal biopsy. Tumor suppressor CADM1/TSLC1, an IgCAM-type adhesion molecule, is expressed on renal tubular cells, and its increased ectodomain shedding is suggested to contribute to tubular degeneration. A sandwich ELISA for urinary CADM1 was developed using two anti-ectodomain antibodies. Urinary CADM1 concentrations in patients with CKD were measured. Renal biopsy specimens of all patients were pathologically scored for tubulointerstitial lesions using epithelial degeneration, interstitial inflammation, and fibrosis. There was a weak inverse correlation between pathological scores and elevated GFR (eGFR). Notably, this correlation gradually increased in patients with increasing CADM1 concentrations. CADM1 appeared to be a useful marker indicating tubulointerstitial damage from eGFR levels in CKD.

Academic Significance and Societal Importance of the Research Achievements

慢性腎臓病では尿細管間質病変の重篤度が残腎機能を規定する。近年、新規尿中バイオマーカーが確立されているが、尿細管間質障害の全体を反映しているとは言い難く、腎生検以外にその重篤度を知るのは難しい。国内で1300万人を超える慢性腎臓病患者の治療においては尿細管間質の慢性炎症とそれに続く線維化を制御する必要性が重要視されているが、国内外の多くの研究にもかかわらず、病態の分子機序、特に慢性炎症の引き金となる上位分子は確定していない。本研究は接着分子結合を介した特異性の高い慢性炎症誘導モデルを提唱しており、極めて独創的かつ重要な課題と認識される。

Report

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

    (9 results)

All 2022 2021 2020

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (6 results)

  • [Journal Article] Possible Therapeutic Utility of anti-Cell Adhesion Molecule 1 Antibodies for Malignant Pleural Mesothelioma.2022

    • Author(s)
      Hagiyama M, Mimae T, Wada A, Takeuchi F, Yoneshige A, Inoue T, Kotoku N, Hamada H, Sekido Y, Okada M, Ito A
    • Journal Title

      Front Cell Dev Biol

      Volume: 10 Pages: 945007-945007

    • DOI

      10.3389/fcell.2022.945007

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Elevated Hydrostatic Pressure Causes Retinal Degeneration Through Upregulating Lipocalin-22021

    • Author(s)
      Yoneshige Azusa、Hagiyama Man、Takashima Yasutoshi、Ueno Satoru、Inoue Takao、Kimura Ryuichiro、Koriyama Yoshiki、Ito Akihiko
    • Journal Title

      Frontiers in Cell and Developmental Biology

      Volume: 9 Pages: 664327-664327

    • DOI

      10.3389/fcell.2021.664327

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expression of cell adhesion molecule 1 in human and murine endometrial glandular cells and its increase during the proliferative phase by estrogen and cell density.2021

    • Author(s)
      Kimura R, Otani T, Shiraishi N, Hagiyama M, Yoneshige A, Wada A, Kajiyama H, Takeuchi F, Mizuguchi N, Morishita K, Ito A
    • Journal Title

      Life Sci

      Volume: 283 Pages: 119854-119854

    • DOI

      10.1016/j.lfs.2021.119854

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 接着分子CADM1/TSLC1は子宮内膜腺癌細胞の単層円柱状増殖に寄与する2022

    • Author(s)
      萩山満、武内風香、伊藤彰彦
    • Organizer
      第81回日本癌学会総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 接着分子CADM1は子宮内膜腺上皮の増殖に寄与する2022

    • Author(s)
      萩山満、米重あづさ、武内風香、伊藤彰彦
    • Organizer
      第111回日本病理学会総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 接着分子CADM1の発現抑制は密集する上皮細胞にアポトーシスを誘導する2021

    • Author(s)
      萩山満、伊藤彰彦
    • Organizer
      第80回日本癌学会総会
    • Related Report
      2021 Research-status Report
  • [Presentation] 上皮単層における細胞生存への寄与:接着分子CADM12021

    • Author(s)
      萩山満、米重あづさ、伊藤彰彦
    • Organizer
      第110回日本病理学会総会
    • Related Report
      2021 Research-status Report
  • [Presentation] 腎尿細管間質病変の新規バイオマーカー接着分子CADM1(別名腫瘍抑制因子TSLC1)2020

    • Author(s)
      萩山満、木村竜一朗、伊藤彰彦
    • Organizer
      第79回日本癌学会総会
    • Related Report
      2020 Research-status Report
  • [Presentation] 慢性腎臓病間質病変の新規バイオマーカー接着分子CADM12020

    • Author(s)
      萩山満、木村竜一朗、米重あづさ、伊藤彰彦
    • Organizer
      第109回日本病理学会総会
    • Related Report
      2020 Research-status Report

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

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