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Primary cilia as a novel therapeutic target in invasive bladder cancer

Research Project

Project/Area Number 20K07601
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionKansai Medical University

Principal Investigator

YOSHIDA Takashi  関西医科大学, 医学部, 助教 (00714966)

Co-Investigator(Kenkyū-buntansha) 田中 進  長崎県立大学, 看護栄養学部, 教授 (30399472)
大江 知里  大阪公立大学, 大学院医学研究科, 准教授 (40469242)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords一次繊毛 / IFT88 / 膀胱癌 / 浸潤性膀胱癌
Outline of Research at the Start

近年、細胞小器官である一次繊毛の消失が、様々な癌種の形成や進展に関わる重要な因子であることが報告されてきている。そこで一次繊毛の形成に関連するProtein Xの遺伝子発現を、ヒト浸潤性膀胱癌細胞株を用いて解析した結果、GeneYのみの発現が認められなかった。本研究では、浸潤性膀胱癌における一次繊毛の役割、特にGeneYに着目し、その解析を通じて浸潤性膀胱癌の新規治療法の開発へとつなげる。

Outline of Final Research Achievements

In this study, we investigated the role of primary cilia protein, particularly IFT88, as a novel therapeutic target in invasive bladder cancer. Immunohistochemistry and RNA scope analyses using human samples revealed high expression of IFT88 in normal urothelium, whereas its expression was significantly reduced or lost in dysplasia and urothelial carcinoma. Attempts to establish IFT88 knockout bladder cancer cell lines using CRISPR-Cas9 were challenging. Consequently, we created conditional knockout mice with Krt5-positive cell-specific deletion of IFT88. These mice, along with wild-type counterparts, were subjected to N-butyl-N-nitrosamine administration to compare the growth and invasion rates of bladder cancer. We found that compared to wild-type mice, the loss of IFT88 accelerated the growth and invasion of bladder cancer.

Academic Significance and Societal Importance of the Research Achievements

これまで国内外の研究により乳癌、甲状腺癌、基底細胞癌、膵癌で一次繊毛と各癌進展の関連性、またそれにかかわるメカニズムの解明が試みられている(Gradilone et al. Curr DrugTargets 2018)。しかしながら、膀胱癌の進展と一次繊毛との関連を示した報告はない。本研究成果は、一次繊毛を構成するIFT88欠損が非筋層浸潤性膀胱癌が筋層浸潤性膀胱癌治療へ進行する際のトリガーになり得ることを示唆し、今後の新規治療ターゲット探索において重要な研究結果となった。

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

    (5 results)

All 2021 2020

All Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Integration of NRP1, RGS5, and FOXM1 expression, and tumour necrosis, as a postoperative prognostic classifier based on molecular subtypes of clear cell renal cell carcinoma2021

    • Author(s)
      Takashi Yoshida , Chisato Ohe , Junichi Ikeda , Naho Atsumi , Ryoichi Saito , Hisanori Taniguchi , Haruyuki Ohsugi , Motohiko Sugi , Koji Tsuta , Tadashi Matsuda , Hidefumi Kinoshita
    • Journal Title

      J Pathol Clin Res

      Volume: 7 Issue: 6 Pages: 590-603

    • DOI

      10.1002/cjp2.232

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Eosinophilic features in clear cell renal cell carcinoma correlate with outcomes of immune checkpoint and angiogenesis blockade2021

    • Author(s)
      Yoshida T, Ohe C, Ikeda J, Atsumi N, Ohsugi H, Sugi M, Higasa K, Saito R, Tsuta K, Matsuda T, Kinoshita H.
    • Journal Title

      J Immunother Cancer .

      Volume: 9 Issue: 9 Pages: e002922-e002922

    • DOI

      10.1136/jitc-2021-002922

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Comprehensive pathological assessment of histological subtypes, molecular subtypes based on immunohistochemistry, and tumor-associated immune cell status in muscle-invasive bladder cancer2021

    • Author(s)
      Ikeda J, Ohe C, Yoshida T, Kuroda N, Saito R, Kinoshita H, Tsuta K, Matsuda T.
    • Journal Title

      Pathol Int .

      Volume: 71 Issue: 3 Pages: 173-182

    • DOI

      10.1111/pin.13060

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Photodynamic Diagnosis-guided Dual Laser Ablation for Upper Urinary Tract Carcinoma: Preoperative Preparation, Surgical Technique, and Clinical Outcomes2021

    • Author(s)
      Takashi Yoshida, Takashi Murota, Tomoaki Matsuzaki, Kazuyoshi Nakao, Chisato Ohe, Tadashi Matsuda, and Hidefumi Kinoshita
    • Journal Title

      European Urology Open Science

      Volume: -

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Patent(Industrial Property Rights)] 尿路系上皮腫瘍関連病変を検出するためのバイオマーカー2020

    • Inventor(s)
      吉田崇、田中進、大江知里
    • Industrial Property Rights Holder
      吉田崇、田中進、大江知里
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-114309
    • Filing Date
      2020
    • Related 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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