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2021 Fiscal Year Final Research Report

Development of nucleic acid drugs based on small RNA-mRNA networks in ovarian cancer.

Research Project

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Project/Area Number 19K18651
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56040:Obstetrics and gynecology-related
Research InstitutionKeio University

Principal Investigator

Chiyoda Tatsuyuki  慶應義塾大学, 医学部(信濃町), 講師 (40445367)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywords卵巣癌 / 核酸医薬 / マイクロRNA
Outline of Final Research Achievements

We analyzed the networks identified by whole transcriptome analysis and whole small RNA analysis using ovarian serous carcinoma and normal ovaries. First, we focused on miR-497-5p-SMARCA4. In ovarian cancer cell lines, miR-497 mimic inhibited proliferation, while miR-497 inhibitor enhanced proliferation. High SMARCA4 expression was associated with poor prognosis in ovarian cancer. miR-762 inhibitor markedly suppressed cell proliferation. Although miR-497 did not significantly alter SMARCA4 expression in the cell lines, miR-762 inhibition and increased miR-497 expression may be effective therapeutic strategies in ovarian cancer.

Free Research Field

婦人科腫瘍学

Academic Significance and Societal Importance of the Research Achievements

卵巣癌には近年PARP阻害薬などの分子標的治療が導入されたが、約30年間全生存率の大幅な改善は認めていない。本研究では卵巣癌の精密医療実装にむけて、抗がん剤、抗体医薬の次に続く第3の抗腫瘍薬として核酸医薬の可能性を追求する。核酸化学技術、デリバリー担体の開発により核酸医薬は臨床応用されてきている。卵巣癌における小分子RNAとメッセンジャーRNAの有機的なネットワークを解明し、antimiRおよびmiRNA mimic等の核酸医薬を用いて小分子RNAを操作することにより卵巣癌治療を行うことは卵巣癌の予後改善に寄与すると考えられる。

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Published: 2023-01-30  

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