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2021 Fiscal Year Final Research Report

Development of a new therapeutic modality using YAP1/TAZ inhibitors against malignant mesothelioma

Research Project

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Project/Area Number 19H03527
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 50020:Tumor diagnostics and therapeutics-related
Research InstitutionAichi Cancer Center Research Institute

Principal Investigator

Sekido Yoshitaka  愛知県がんセンター(研究所), 分子腫瘍学分野, 副所長兼分野長 (00311712)

Co-Investigator(Kenkyū-buntansha) 佐藤 龍洋  愛知県がんセンター(研究所), 分子腫瘍学分野, 主任研究員 (70547893)
向井 智美  愛知県がんセンター(研究所), 分子腫瘍学分野, 研究員 (10706146)
Project Period (FY) 2019-04-01 – 2022-03-31
Keywords悪性中皮腫 / 細胞株 / 分子標的薬 / シグナル伝達系 / 遺伝子変異 / 細胞増殖
Outline of Final Research Achievements

Malignant mesothelioma promotes cell proliferation and progression of tumor cells through the constitutive activation of YAP1/TAZ coactivators involved in gene transcription. Through collaborative research, we have developed a novel YAP1/TAZ inhibitor. The sensitivities of the newly developed inhibitor K-975 as well as other YAP1/TAZ inhibitors were examined and characterized using an established panel of Japanese malignant mesothelioma cell lines by ourselves. Furthermore, we succeeded in establishing acquired resistant strains using the cell lines that initially showed high sensitivity, and clarified the mechanism of resistance. The results of this study may lead to new therapeutic strategies for malignant mesothelioma.

Free Research Field

分子腫瘍学

Academic Significance and Societal Importance of the Research Achievements

悪性中皮腫に対する化学療法薬は極めて限られている。免疫チェックポイント阻害剤も2剤が最近保険収載されたが、実臨床での奏効率は期待されたほど高くない。本研究によりYAP1/TAZ阻害剤がNF2-Hippoシグナル伝達系が高頻度に破綻している悪性中皮腫細胞に対して強い抗腫瘍効果を示すことが明らかとなった。さらに、感受性や獲得耐性に関する機構についても明らかになった。今後、YAP1/TAZ阻害剤を臨床試験に展開するために非常に有用な知見が得られたものと考えられる。

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Published: 2023-01-30  

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