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Elucidating anticancer drug resistance in urothelial carcinoma by multi-faceted approach

Research Project

Project/Area Number 19K09715
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56030:Urology-related
Research InstitutionKagoshima University

Principal Investigator

NAKAGAWA Masayuki  鹿児島大学, 医歯学総合研究科, 客員研究員 (90164144)

Co-Investigator(Kenkyū-buntansha) 大迫 洋一  鹿児島大学, 鹿児島大学病院, 医員 (60793354)
榎田 英樹  鹿児島大学, 医歯学域医学系, 教授 (80347103)
吉野 裕史  鹿児島大学, 医歯学域鹿児島大学病院, 助教 (90642611)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords尿路上皮癌 / 薬剤耐性 / マイクロRNA / シスプラチン / ジェムシタビン / ジェムシタビン耐性 / 膀胱癌 / miR-99a-5p / SMARCD1 / PHGDH / miR-223 / WDR62 / 抗癌剤耐性
Outline of Research at the Start

本研究では従来のRNAシーケンスやマイクロRNAの発現プロファイルに基づく解析に加えて、メタボロミクス解析や新しいゲノム編集技術であるCRISPRライブラリーを尿路上皮癌細胞に導入して解析する。これにより多くのデータベースから多面的アプローチを行うことで、既知の GC 耐性機序研究の位置づけを行うとともに、核心的なGC耐性機序を明らかにして既存薬によるドラッグリポジショニングの可能性を探り、安価で有効な新規の耐性克服治療のための基礎的データを収集する提案である。

Outline of Final Research Achievements

Knocking down PHGDH, a metabolic enzyme on the glycolysis pathway, significantly inhibited proliferation of bladder cancer cell lines and induced cell apoptosis. In in vivo, xenograft growth was significantly suppressed in the combination group of PHGDH inhibitors and GC therapy.
Overexpression of miR-99a-5p was contributed to inhibit cell viability and improve GEM sensitivity in the GEM-resistant cell lines. We focused on SMARCD1 a candidate target gene, and cell viability was suppressed and GEM sensitivity was restored in the loss-of-function experiments. In vivo, overexpression of miR-99a-5p and knockdown of SMARCD1 also suppressed the xenograft growth. The mechanism was found to be acceleration of cell senescence through the induction of p21.

Academic Significance and Societal Importance of the Research Achievements

尿路上皮癌は他の泌尿器癌(前立腺癌や腎癌)に比べて明らかに有効な薬物治療の手段が少なく、薬剤耐性が大きな問題である。治療成績の向上や医療経済のためにも新規治療法の開発は急務である。本研究ではPHGDH遺伝子や、miR-99a-5pとその標的遺伝子であるSMARCD1が核心的なGC耐性機序に関わる可能性があることを明らかにできた。さらに研究を発展させれば臨床応用が可能なKey moleculeとして展開できる可能性が確認できた。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (5 results)

All 2022 2021 2020 2019 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (1 results) Remarks (1 results)

  • [Journal Article] microRNA-99a-5p induces cellular senescence in gemcitabine-resistant bladder cancer by targeting SMARCD1.2022

    • Author(s)
      Motoki Tamai, Shuichi Tatarano, Shunsuke Okamura, Wataru Fukumoto, Issei Kawakami, Yoichi Osako, Takashi Sakaguchi, Satoshi Sugita, Masaya Yonemori, Yasutoshi Yamada, Masayuki Nakagawa, Hideki Enokida, Hirofumi Yoshino.
    • Journal Title

      Molecular Oncology

      Volume: 16 Issue: 6 Pages: 1329-1346

    • DOI

      10.1002/1878-0261.13192

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Characterization of PHGDH expression in bladder cancer: potential targeting therapy with gemcitabine/cisplatin and the contribution of promoter DNA hypomethylation2020

    • Author(s)
      Hirofumi Yoshino, Hideki Enokida, Yoichi Osako, Nijiro Nohata, Masaya Yonemori, Satoshi Sugita, Kazuki Kuroshima, Masafumi Tsuruda, Shuichi Tatarano, Masayuki Nakagawa.
    • Journal Title

      Molecular Oncology

      Volume: 54 Issue: 9 Pages: 2190-2202

    • DOI

      10.1002/1878-0261.12697

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tumor suppressive microRNA223 targets WDR62 directly in bladder cancer.2019

    • Author(s)
      Sugita S, Yoshino H, Yonemori M, Miyamoto K, Matsushita R, Sakaguchi T, Itesako T, Tatarano S, Nakagawa M, Enokida H.
    • Journal Title

      Int J Oncol.

      Volume: 54 Pages: 2222-2236

    • DOI

      10.3892/ijo.2019.4762

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] microRNA-99a-5pは、膀胱癌におけるゲムシタビン耐性を克服するための重要な分子である.2021

    • Author(s)
      玉井元規, 吉野裕史, 坂口大, 榎田英樹.
    • Organizer
      第80回日本癌学会学術総会
    • Related Report
      2021 Annual Research Report
  • [Remarks] 鹿児島大学大学大学院医歯学総合研究科 泌尿器科学分野

    • URL

      http://www.kufm.kagoshima-u.ac.jp/~urology/index.php

    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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