• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of KLF5 inhibitors that selectively inhibit cancer and improve cardiac function and elucidation of their molecular mechanisms of action

Research Project

Project/Area Number 19K07512
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 InstitutionJichi Medical University

Principal Investigator

Nakaya Takeo  自治医科大学, 医学部, 准教授 (80512277)

Co-Investigator(Kenkyū-buntansha) 永井 良三  自治医科大学, 医学部, 学長 (60207975)
相澤 健一  自治医科大学, 医学部, 准教授 (70436484)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsKLF5 / 天然変性蛋白 / 分子標的薬 / がん分子創薬 / 核内因子 / 分子創薬 / 大腸癌 / Wntシグナル / undruggable / 蛋白間相互作用阻害薬 / induced helical motif / 蛋白間相互作用阻害 / 心不全 / 転写因子 / アンメットニーズ / KLF5阻害薬 / 癌分子創薬 / Oncocardiology
Outline of Research at the Start

治癒切除不能な大腸癌の予後は依然不良で、副作用の少ない抗癌剤も開発されていない。特に抗癌剤には心毒性があり、抗癌剤の心毒性により心機能不良な癌患者に対する治療は難しい。私達は、大腸癌に必須な転写因子KLF5の阻害薬が、癌細胞特異的に細胞死を誘導し、マウスモデルで心不全を改善することを解明した。本研究では、①化合物と増殖因子との相互作用、②代謝関連酵素に対する薬理作用を解明し、③化合物結合蛋白を同定する。本研究は、癌関連転写因子・立体構造未解明因子に対する分子創薬と、心筋保護作用をもつ抗癌薬開発の新たなモデルを創生する。

Outline of Final Research Achievements

Transcription factor KLF5 is a therapeutic target for colorectal cancer, heart failure, and other diseases. However, it has been difficult to create molecular-targeted drugs because the steric structure of KLF5 has not been elucidated. We have developed a small molecule compound that mimics the α-helix structure of the induced helical motif, which is the site of protein-protein interaction and is predicted from the amino acid sequence. This compound inhibits the formation of a protein complex between KLF5 protein and its deubiquitinating enzyme USP3, thereby reducing the amount of KLF5 protein. It also inhibits and kills colon cancer cells without damaging normal cells, and suppresses tumors of transplanted colon cancer cells in mice with minimal side effects. The efficacy of the drug for heart failure is currently under study.

Academic Significance and Societal Importance of the Research Achievements

がん原因因子、心疾患を悪化させる因子の多くが立体構造を解明できない天然変性蛋白、あるいは標的薬が核膜と細胞膜の両方を通過する低分子薬でなければならない核内因子である。このためがんゲノム解析等でがん原因因子の同定が進む中、その結果が必ずしも進行がん患者に適した分子標的薬の提供、予後改善に結び付いていない。本研究成果は、今まで創薬困難であった、多くの天然変性蛋白や核内因子を標的に、副作用少なく効果の高い分子標的薬を創製する方法の開発につながると期待される。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (4 results)

All 2024 2022 2021

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Peptide mimetic <scp>NC114</scp> induces growth arrest by preventing <scp>PKCδ</scp> activation and <scp>FOXM1</scp> nuclear translocation in colorectal cancer cells2024

    • Author(s)
      Taguchi Yuki、Nakaya Takeo、Aizawa Kenichi、Noguchi Yoshiyuki、Maiya Nobuhiko、Iwamoto Chisako、Ohba Kenichi、Sugawara Minoru、Murata Masayuki、Nagai Ryozo、Kano Fumi
    • Journal Title

      FEBS Open Bio

      Volume: 14 Issue: 4 Pages: 695-720

    • DOI

      10.1002/2211-5463.13784

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of Low-Molecular-Weight Compounds Targeting the Cancer-Associated KLF5 Transcription Factor2022

    • Author(s)
      Takeo Nakaya, Kenichi Aizawa, Yuki Taguchi, Kentaro Tsuji, Sachi Sekine, Kazuhiro Murakami, Masaji Kasai, Hirofumi Nakano, Yasumitsu Kondoh, Shingo Dan, Atsushi Yoshimori, Hiroyuki Kouji, Dai Takehara, Toru Suzuki, Hiroyuki Osada, Masayuki Murata, Akira Tanaka, and Ryozo Nagai
    • Journal Title

      ACS Med. Chem. Lett.

      Volume: 13 Issue: 4 Pages: 687-694

    • DOI

      10.1021/acsmedchemlett.1c00721

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Development of Low-Molecular-Weight Compounds Targeting the Cancer-Associated KLF5 Transcription Factor2022

    • Author(s)
      仲矢丈雄
    • Organizer
      日本癌学会 学術総会 シンポジウム
    • Related Report
      2022 Research-status Report
  • [Patent(Industrial Property Rights)] 心機能改善剤2021

    • Inventor(s)
      学校法人自治医科大学、株式会社PRISM BioLab
    • Industrial Property Rights Holder
      学校法人自治医科大学、株式会社PRISM BioLab
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-187420
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi