2023 Fiscal Year Final Research Report
The effect of the prolonged cetuximab treatment for cytoskeleton and protein transportation in tongue cancer cells
Project/Area Number |
21K16942
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 57020:Oral pathobiological science-related
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Research Institution | Tokyo Medical and Dental University |
Principal Investigator |
Okuyama Kohei 東京医科歯科大学, 大学院医歯学総合研究科, 非常勤講師 (30781968)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Keywords | 頭頸部癌 / 口腔扁平上皮癌 / 腫瘍微小環境 / セツキシマブ / 細胞遊走 / パイロトーシス / インフラマソーム / ガスダーミンD |
Outline of Final Research Achievements |
In this study, the impact of long-term treatment with the EGFR inhibitor, cetuximab (Cmab), on the tumor microenvironment in head and neck squamous cell carcinoma (HNSCC) was examined. It was observed that long-term Cmab treatment induced pyroptosis, a form of inflammatory cell death, in cancer cells. This process occurs via the inflammasome pathway, prompting the use of Gsdmd gene knockdown cells and knockout mouse models to investigate the effects of pyroptosis on tumor growth, the tumor microenvironment, and the potential promotion of anti-tumor immunity. Additionally, the potential for combined therapy with Cmab and immune checkpoint inhibitors was suggested, leading to the proposal of a novel strategy for HNSCC treatment.
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Free Research Field |
口腔がん
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Academic Significance and Societal Importance of the Research Achievements |
頭頸部癌微小環境に着目した研究はこれまで多数行われているものの、明確なバイオマーカーや治療標的の発見には至っていない。これは頭頸部癌のみならず、全ての固形がんに当てはまる。がん細胞の代謝や細胞周期、増殖抑制を標的とした治療や、抗腫瘍免疫の増感治療など、生物学的影響を考慮した治療アプローチは多岐にわたる。Cmabのがん微小環境に対するユニバーサルな生物学的影響が明確になることにより、患者の治療選択肢の拡大、治療法の最適化、新規レジメンの開発や生存率の向上、患者の生活の質の向上、ひいては医療費の削減等につながり、このような学術的な貢献が社会的意義を生み出す可能性を秘めている。
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