2021 Fiscal Year Final Research Report
Whole-body/organ pathology of cancer microenvironment
Project/Area Number |
20K16212
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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 49030:Experimental pathology-related
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Research Institution | Hokkaido University (2021) The University of Tokyo (2020) |
Principal Investigator |
Kubota Shimpei 北海道大学, 遺伝子病制御研究所, 特任講師 (90808859)
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Project Period (FY) |
2020-04-01 – 2022-03-31
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Keywords | 全身全細胞解析 / システム生物学 / がん微小環境 / 組織透明化 |
Outline of Final Research Achievements |
Tissue clearing is one of the most powerful strategies for a comprehensive analysis of disease progression. In this project, we established an integrated pipeline that combines tissue clearing, 3D imaging, and machine learning and applied to a mouse tumour model of experimental lung metastasis using human lung adenocarcinoma A549 cells. This pipeline provided the spatial information of the tumour microenvironment. We further explored the role of transforming growth factor-β (TGF-β) in cancer metastasis. TGF-β-stimulated cancer cells enhanced metastatic colonization of unstimulated-cancer cells in vivo when both cells were mixed. Further, whole-organ analysis revealed accumulation of platelets or macrophages with TGF-β-stimulated cancer cells, suggesting that TGF-β might promote remodelling of the tumour microenvironment, enhancing the colonization of cancer cells.
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Free Research Field |
システム生物学
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Academic Significance and Societal Importance of the Research Achievements |
今回の研究では、これまでに樹立した簡便な組織透明化手法の開発に、機械学習による画像解析を組み合わせることで、がん微小環境内における細胞間相互作用の解析基盤を構築しました。本解析手法を用いることで TGF-beta刺激をうけたがん細胞が、TGF-beta刺激をうけていないがん細胞にも影響を与えてがん細胞の転移巣形成を促進するという、TGF-betaの新たな作用を明らかにしました。これらの発見は、がん微小環境における細胞間相互作用によるがん転移促進機構と、そのメカニズムを担う分子のがん治療標的としての可能性について有益な示唆をもたらしました。
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