Whole-organ analysis of TGF-β-mediated remodelling of the tumour microenvironment by tissue clearing.

Abstract

Tissue clearing is one of the most powerful strategies for a comprehensive analysis of disease progression. Here, 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. RNA-sequencing analysis showed that expression of the genes related to coagulation and inflammation were up-regulated in TGF-β-stimulated cancer cells. 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. Hence, our integrated pipeline for 3D profiling will help the understanding of the tumour microenvironment.

• Authors: Shimpei I Kubota, Kei Takahashi, Tomoyuki Mano, Katsuhiko Matsumoto, Takahiro Katsumata, Shoi Shi, Kazuki Tainaka, Hiroki R Ueda, Shogo Ehata, Kohei Miyazono
• Journal: Communications biology (Commun Biol) Vol. 4 Issue 1 Pg. 294 (03 05 2021) ISSN: 2399-3642 [Electronic] England
• PMID: 33674758 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Cytokines
• Transforming Growth Factor beta

Topics

• A549 Cells
• Adenocarcinoma of Lung (genetics, metabolism, secondary)
• Animals
• Blood Platelets (drug effects, metabolism)
• Cell Movement (drug effects)
• Cytokines (metabolism)
• Female
• Fluorescent Antibody Technique
• Gene Expression Regulation, Neoplastic
• Histocytological Preparation Techniques
• Humans
• Lung Neoplasms (genetics, metabolism, pathology)
• Mice, Inbred BALB C
• Mice, Nude
• Microscopy, Fluorescence
• Transforming Growth Factor beta (pharmacology)
• Tumor Microenvironment
• Tumor-Associated Macrophages (drug effects, metabolism)
• Mice