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2022 Fiscal Year Final Research Report

Clarification of the molecular mechanism and establishment of the basis for drug development toward epithelial cancer barrier

Research Project

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Project/Area Number 19H03373
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 47030:Pharmaceutical hygiene and biochemistry-related
Research InstitutionGifu Pharmaceutical University

Principal Investigator

Ikari Akira  岐阜薬科大学, 薬学部, 教授 (50315850)

Co-Investigator(Kenkyū-buntansha) 浅井 知浩  静岡県立大学, 薬学部, 教授 (00381731)
横山 英志  東京理科大学, 薬学部生命創薬科学科, 准教授 (70433208)
Project Period (FY) 2019-04-01 – 2022-03-31
Keywords肺がん / クローディン / 機能性食品
Outline of Final Research Achievements

We focused on the relationship between cancer and claudins (CLDNs), major components of tight junction in epithelia, and found that CLDN2 is involved in the elevation of proliferation and chemoresistance in lung adenocarcinoma cells. Similar effects were observed by CLDN1 overexpression. However, anticancer drugs targeting CLDN1/2 have not been developed.
In the present study, we performed docking simulation, intermolecular interaction analysis, cell function analysis, and so on, and successfully developed low molecular weight compounds, which can reduce CLDN1/2 expression in lung adenocarcinoma cells. Furthermore, we identified some functional food ingredients, which can reduce CLDN2 expression. A new path has been opened for cancer prevention and treatment by these studies.

Free Research Field

生化学

Academic Significance and Societal Importance of the Research Achievements

世界的な高齢化社会の到来とともに、がんの罹患・死亡者数は増加の一途を辿っている。特に肺がんは自覚症状が乏しく早期発見が困難であり、各がん種の中でアンメット・メディカルニーズが最も高い。近年、分子標的薬や免疫チェックポイント阻害薬などが臨床利用され、肺がんの奏功率が向上している。しかし、治療薬への耐性化、治療薬間の交差耐性、難治性がんの存在といった問題点は未解決である。さらに、抗体医薬は高価なため、医療費の高騰が社会問題になっている。本研究で見出したCLDN1・2を標的とする機能性食品成分や低分子化合物は、がん治療の課題解決に有用であると考えられ、臨床利用に向けた研究開発が期待される。

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Published: 2024-01-30  

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