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Reasearch on roles of long noncoding RNA-containing complexes in ovarian cancer and their application to ovarian cancer diagnosis and therapy

Research Project

Project/Area Number 21K16798
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56040:Obstetrics and gynecology-related
Research InstitutionTokyo Metropolitan Geriatric Hospital and Institute of Gerontology

Principal Investigator

Takeiwa Toshihiko  地方独立行政法人東京都健康長寿医療センター(東京都健康長寿医療センター研究所), 東京都健康長寿医療センター研究所, 研究員 (20635643)

Project Period (FY) 2021-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords卵巣がん / 長鎖非コードRNA / RNA結合蛋白質
Outline of Research at the Start

婦人科がんである卵巣がんは本邦の女性生殖器がんで最も死亡数の多いがんであり、新たな診断・治療法の開発は急務である。近年、タンパク質をコードしない長いRNA(長鎖非コードRNA)が、がんのバイオマーカー・治療標的の候補として注目を集めているが、卵巣がんにおける長鎖非コードRNAの役割は十分に解明されていない。そこで本研究では、長鎖非コードRNAがどういったタンパク質とともに卵巣がんの悪性化や進展にかかわるのかを明らかにし、その成果を卵巣がんの新規診断・治療法の開発と治療へ応用することを目指す。

Outline of Final Research Achievements

In this study, we investigated ovarian cancer-specific long intergenic noncoding RNAs (lincRNAs) using our RNA-sequence data obtained from normal ovarian tissues and ovarian cancers. We identified NONHSAT013448, an unannotated lincRNA, as the most highly expressed lincRNA in ovarian cancer tissues, and designated this lincRNA as ovarian cancer long intergenic noncoding RNA (OIN1). We demonstrated that OIN1 promotes ovarian cancer cell proliferation, while siRNA-mediated OIN1 silencing enhances apoptosis of ovarian cancer cells and suppresses in vivo growth of ovarian cancer cells inoculated in immunodeficient mice. We also identified RASSF5 and ADORA1, apoptosis-related genes, as OIN1 downstream target genes.

Academic Significance and Societal Importance of the Research Achievements

卵巣がんは婦人科領域における最も予後不良ながんのひとつであり、新たな治療法の開発が求められている。本研究で我々は、卵巣がん特異的に発現する長鎖非コードを新たに同定し、その卵巣がんにおける機能を明らかにする一方、その治療応用への可能性について示した。本研究成果は長鎖非コードRNAやその作用メカニズムを標的とする卵巣がんの革新的な治療法の開発につながることが期待される。

Report

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

    (3 results)

All 2022 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Long Intergenic Noncoding RNA OIN1 Promotes Ovarian Cancer Growth by Modulating Apoptosis-Related Gene Expression2021

    • Author(s)
      Takeiwa Toshihiko、Mitobe Yuichi、Ikeda Kazuhiro、Hasegawa Kosei、Horie Kuniko、Inoue Satoshi
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 20 Pages: 11242-11242

    • DOI

      10.3390/ijms222011242

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Identification of OIN1, a lncRNA overexpressed in high-grade serous and clear cell ovarian carcinomas, as a cancer therapeutic target2022

    • Author(s)
      Takeiwa T, Ikeda K, Horie-Inoue K, Inoue S
    • Organizer
      Ovarian Cancer Research Seminar Series
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Identification of a tumor-promoting long intergenic noncoding RNA, OIN1, in ovarian cancer2021

    • Author(s)
      Toshihiko Takeiwa, Kazuhiro Ikeda, Kuniko Horie-Inoue, Satoshi Inoue
    • Organizer
      Keystone Symposia “Non-Coding RNAs: Biology and Applications (EK44)”
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2021-04-28   Modified: 2024-01-30  

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