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

Oligonucleotide therapeutics using a novel tumor-suppressive microRNA targeting MYC pathway

Research Project

Project/Area Number 19K07709
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 50020:Tumor diagnostics and therapeutics-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Yasuyuki Gen  東京医科歯科大学, 難治疾患研究所, 非常勤講師 (80596156)

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: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
KeywordsmiR-766-5p / BRD4 / CBP / MYC / 核酸抗癌薬 / NUT正中線癌 / スーパーエンハンサー / super-enhancer / WNT/β-catenin / BRD4-NUT / miRNA / WNT-β-catenin
Outline of Research at the Start

miRNAは複数のmRNAの発現を抑制するnon-coding RNAであるが、癌抑制型miRNAは核酸抗癌薬のシーズとなりうる。MYCは多くの癌で発現亢進している転写調節因子であり、細胞周期促進、癌細胞特有の代謝制御を通して癌促進的に作用する。これまでにmiRNAライブラリーによるスクリーニングから見出した癌抑制型miRNA、miR-X(lab name)がBRD4及びWnt経路を介して、MYCを著明に抑制することを明らかにしつつある。本研究では、MYC標的miRNA核酸抗癌薬の開発を目指して、miR-XのMYCを抑制する機序と抗腫瘍効果を明らかにする。

Outline of Final Research Achievements

We identified miR-766-5p as a miRNA that downregulated MYC expression and inhibited tumor cell growth in vitro. We show that miR-766-5p directly targets CBP and BRD4. Concurrent suppression of CBP and BRD4 cooperatively downregulated MYC expression in cancer cells but not in normal cells. Chromatin immunoprecipitation analysis revealed that miR-766-5p reduced levels of H3K27ac at MYC super-enhancers (SEs) via CBP suppression. In vivo administration of miR-766-5p suppressed tumor growth in two xenograft models. Targeting SEs using miR-766-5p-based therapeutics may serve as an effective strategy for the treatment of MYC-driven cancers.

Academic Significance and Societal Importance of the Research Achievements

本研究では、新たな核酸抗癌薬のシーズとして miR-766-5p を同定した。miR-766-5pは BRD4 とCBP を抑制することで、スーパーエンハンサーを制御し、癌細胞特異的に MYC の発現を抑制した。miR-766-5pを用いた核酸抗癌薬は MYC が活性化している癌に対する新たな治療戦略となる可能性がある。特に希少難治癌であるNUT正中線癌は、BRD4がドライバーとなってMYCが活性化しているため、miR-766-5pを用いた核酸抗癌薬は有効な治療法となる可能性がある。

Report

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

    (15 results)

All 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (10 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] miR-766-5p Targets Super-Enhancers by Downregulating CBP and BRD4.2021

    • Author(s)
      Gen Y, Muramatsu T, Inoue J, Inazawa J.
    • Journal Title

      Cancer Res.

      Volume: 81 Issue: 20 Pages: 5190-5201

    • DOI

      10.1158/0008-5472.can-21-0649

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Concurrent targeting of MAP3K3 and BRD4 by miR-3140-3p overcomes acquired resistance to BET inhibitors in neuroblastoma cells.2021

    • Author(s)
      Liu C, Gen Y, Tanimoto K, Muramatsu T, Inoue J, Inazawa J.
    • Journal Title

      Mol Ther Nucleic Acids.

      Volume: 25 Pages: 83-92

    • DOI

      10.1016/j.omtn.2021.05.001

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] SOX2 enhances cell survival and induces resistance to apoptosis under serum starvation conditions through the AKT/GSK-3β signaling pathway in esophageal squamous cell carcinoma.2021

    • Author(s)
      Terasaki K, Gen Y, Iwai N, Soda T, Kitaichi T, Dohi O, Taketani H, Seko Y, Umemura A, Nishikawa T, Yamaguchi K, Moriguchi M, Konishi H, Naito Y, Itoh Y, Yasui K.
    • Journal Title

      Oncol Lett.

      Volume: 21 Pages: 269-269

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] miR-1293, a Candidate for miRNA-Based Cancer Therapeutics, Simultaneously Targets BRD4 and the DNA Repair Pathway.2020

    • Author(s)
      Takagawa Y, Gen Y, Muramatsu T, Tanimoto K, Inoue J, Harada H, Inazawa J.
    • Journal Title

      Mol Ther.

      Volume: 28 Pages: 1494-1505

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] スーパーエンハンサーを標的としたmiRNA核酸抗癌薬の開発.2021

    • Author(s)
      玄泰行、村松智輝、井上純、稲澤譲治
    • Organizer
      第24回日本がん分子標的治療学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Targeting super-enhancers by downregulating CBP and BRD4 using miR-766-5p-based cancer therapeutics2021

    • Author(s)
      玄泰行、稲澤譲治
    • Organizer
      第80回日本癌学会学術総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Concurrent targeting of MAP3K3 and BRD4 by miR 3140 3p overcomes acquired resistance to BET inhibitors in neuroblastoma cells2021

    • Author(s)
      劉暢、玄泰行、稲澤譲治
    • Organizer
      第80回日本癌学会学術総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] MYC経路を標的とする新規腫瘍抑制型miRNAの同定2020

    • Author(s)
      玄泰行、稲澤譲治
    • Organizer
      第24回日本がん分子標的治療学会
    • Related Report
      2020 Research-status Report
  • [Presentation] MYC経路を標的とする新規腫瘍抑制型miRNAを用いた核酸抗癌薬の可能性2020

    • Author(s)
      玄泰行、稲澤譲治
    • Organizer
      第79回日本癌学会学術総会
    • Related Report
      2020 Research-status Report
  • [Presentation] miR-3140はBRD4-MYCN経路を標的とし、神経芽腫細胞の増殖を抑制する2020

    • Author(s)
      劉暢、玄泰行、稲澤譲治
    • Organizer
      第79回日本癌学会学術総会
    • Related Report
      2020 Research-status Report
  • [Presentation] 核酸抗癌薬を目指した新規腫瘍抑制型miRNAの探索2019

    • Author(s)
      玄 泰行、村松 智輝、井上 純、稲澤 譲治
    • Organizer
      第23回日本がん分子標的治療学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Oligonucleotide therapeutics using a novel tumor-suppressive microRNA targeting MYC pathway2019

    • Author(s)
      Yasuyuki Gen, Tomoki Muramatsu, Jun Inoue, Johji Inazawa
    • Organizer
      第78回日本癌学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Function-based microRNA library screening identified novel tumor suppressive microRNAs targeting BRD42019

    • Author(s)
      Yuki Takagawa, Yasuyuki Gen, Tomoki Muramatsu, Hiroyuki Harada, Johji Inazawa
    • Organizer
      第78回日本癌学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Chang Liu, Yasuyuki Gen, Johji Inazawa2019

    • Author(s)
      miR-3140 suppressed tumor cell growth in neuroblastoma by targeting BRD4-MYCN pathway
    • Organizer
      第78回日本癌学会学術集会
    • Related Report
      2019 Research-status Report
  • [Patent(Industrial Property Rights)] マイクロRNA及びその誘導体を有効成分とする医薬組成物2019

    • Inventor(s)
      稲澤 譲治、玄 泰行、井上 純、村松 智輝、高川 祐希
    • Industrial Property Rights Holder
      国立大学法人 東京医科歯科大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-233250
    • Filing Date
      2019
    • Related Report
      2019 Research-status Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi