Abstract
The role of cancer-associated fibroblasts (CAFs) in the initiation and invasion phases of human lung adenocarcinoma (LUAD) development is not fully understood. In this study, we utilized single-cell RNA sequencing, spatial transcriptomics, and a combination of in vivo and in vitro models to decode the dynamics of tumor-stroma interactions during human LUAD progression, focusing primarily on adenocarcinoma in situ (AIS), minimally invasive adenocarcinoma (MIA), and invasive adenocarcinoma (IAC). We identified a matrix CAF (mCAF) subtype characterized by high THBS2 expression, which was closely associated with poor clinical outcomes, tumor recurrence, and the invasive dynamics of LUAD. Spatial transcriptomics and multiplex immunohistochemistry analysis revealed that this CAF subpopulation was closely associated with tumor cells, with clear spatial colocalization. In vivo and in vitro experiments demonstrated that THBS2 secreted by these mCAFs directly binds to SDC4 on tumor cells, enhancing tumor epithelial-mesenchymal transition (EMT) programs. This study highlights THBS2+ mCAFs as key regulators of tumor-stroma interactions and identifies the THBS2-SDC4-EMT axis as a potential therapeutic target in LUAD.
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Data availability
All scRNA-seq datasets used in this study are publicly available. The datasets can be accessed via the following links: GSE189357 (https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE189357) and GSE164789 (https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE164789). The bulk transcriptome data was download from the TCGA (https://portal.gdc.cancer.gov/) and Gene Expression Omnibus database, including GSE14814 (https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE14814), GSE50081 (https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE50081), GSE72094 (https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE72094), GSE31210 (https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE31210), GSE3141 (https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE3141, GSE26939 (https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE26939), GSE30219 (https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE30219), and GSE20913 (https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE20913). Additionally, the 10X Visium Spatial transcriptome data were collected from GSE189487 dataset (https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc= GSE189487).
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Acknowledgements
This study was supported by the Henan Provincial Science and Technology Research Project (221100310100).
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ZQL conceived, designed, and supervised the research. XWH and DDZ provided project guidance and funding support. YQR and RJM conducted the bioinformatics analysis. ANZ, YHB, STL and HX performed the experiments, with ANZ conducting the statistical analysis of experimental trials. YQR, RJM, and DDZ wrote the manuscript. RJM, PL and QC offered research guidance. YYZ, YY, SYW, JHD, TP, and YKC collected the data. ZQL, RJM and DDZ revised the manuscript.
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All human tissue samples were obtained with written informed consent from each patient and approved by the Ethics Committee (Approval Nos. HLugA120PG01: 2020-0930; HLugA030PG04-2: 2021-0215; HLugA180Su07: 2022-0401). All animal experiments were approved by the Institutional Animal Care and Use Committee of Zhengzhou University (Ethical Approval No. 2019-KY-383) and conducted in strict accordance with the National Institutes of Health (NIH) guidelines for animal care and use.
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Ren, Y., Ming, R., Zuo, A. et al. Cancer-associated fibroblasts drive lung adenocarcinoma progression via THBS2-mediated epithelial-mesenchymal transition. Oncogene (2025). https://doi.org/10.1038/s41388-025-03569-9
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DOI: https://doi.org/10.1038/s41388-025-03569-9