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2023 Fiscal Year Final Research Report

Dissection of cancer associated fibroblasts involved in regulating molecular subtypes of cancers

Research Project

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Project/Area Number 21K20821
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0901:Oncology and related fields
Research InstitutionNational Cancer Center Japan

Principal Investigator

Taki Tetsuro  国立研究開発法人国立がん研究センター, 東病院, 医員 (30905211)

Project Period (FY) 2021-08-30 – 2024-03-31
Keywords肺がん / 病理診断 / 分子サブタイプ
Outline of Final Research Achievements

In light of the possibility that molecular subtypes of cancer may result from cancer cell plasticity, we attempted to elucidate this by assessing the variety of morphology in patient cancer tissues. In particular, we analyzed lung cancer tissues to quantify the variety of PD-L1 protein expression and the spatial distribution of tumor nests and stroma, and clarified their clinical significance. As part of this study, we also performed a clinicopathological study on the concordance rate of histological grades of lung adenocarcinoma in biopsy and surgical materials. The above analyses provided the basis and clues to elucidate the regulatory mechanisms of molecular subtypes of cancer on histopathological sections of cancer.

Free Research Field

病理学

Academic Significance and Societal Importance of the Research Achievements

がんの分子サブタイプをがんの病理組織上で詳細に解析した検討は、乳がんの他にはほとんどない。本研究では、がん関連線維芽細胞を含むがん間質(がん組織内の非がん細胞成分)ががん細胞の分子サブタイプを制御する可能性を鑑み、患者がん組織内における間質とがん胞巣の関連に着目した。研究者は特に、肺がん組織切片上でのこれらの空間的分布を踏まえたがん組織の定量的な解析という新しい枠組みを作り、その臨床的な意義を明らかにした。これは目標としていたがんの分子サブタイプの制御機構の解析の重要な手掛かりとなる。さらには、本研究で得られた病理組織の解析法の知見は、がん研究のより広い分野に適応可能である。

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Published: 2025-01-30  

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