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2022 Fiscal Year Final Research Report

Analysis of DNA damage response to FTD in colorectal cancer and its development to enhance therapeutic effect.

Research Project

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Project/Area Number 19K18158
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionNagoya City University

Principal Investigator

Hirokawa Takahisa  名古屋市立大学, 医薬学総合研究院(医学), 研究員 (40592499)

Project Period (FY) 2019-04-01 – 2023-03-31
KeywordsDNAダメージ応答 / G2/Mチェックポイント阻害剤 / 細胞周期
Outline of Final Research Achievements

In this study, we used AZD6738 as a G2/M checkpoint inhibitor. We confirmed that cell cycle arrest was observed at the G2/M checkpoint in both 5-FU and FTD in colorectal cancer lines, and that it was abolished by AZD6738. We investigated the therapeutic enhancement effect of AZD6738 using 5-FU, a key drug for colorectal cancer. The results showed that AZD6738 potentiated the anti-tumor effect in both cultured cells and mouse subcutaneously implanted models. Based on the keynote experiment, we conducted the same study with FTD, which also showed enhancement of anti-tumor effect in both cultured cells and mouse subcutaneously implanted models.

Free Research Field

DNAダメージ応答

Academic Significance and Societal Importance of the Research Achievements

今回の研究は、今までにないDNAダメージ応答に着目した治療増強効果である。また、大腸癌の治療に対して抵抗性を示した後方ラインで使用される薬剤に対して治療増強効果が示された。この成果は実臨床において治療開発のブレイクスルーになるとともに、後方ラインでの治療効果の向上は、進行再発大腸癌の治療成績の改善に大きく影響を与えるものである。多くの人が罹患し、死亡する大腸癌の治療成績の向上は社会的な意義は非常に大きい。
また、今回着目した手法は薬物療法のみならず、放射線治療などDNAダメージを機序とする抗腫瘍療法に応用できるもので学術的意義も大きい。

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Published: 2024-01-30  

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