Abstract
Phenotypic plasticity is a hallmark feature driving cancer progression, metastasis, and therapy resistance. Fetal-like transcriptional programs have been increasingly implicated in promoting plastic cell states, yet their roles remain difficult to study due to limitations of existing culture models. Here, we establish a chemically defined patient-derived organoid system that enables long-term expansion of colorectal cancer (CRC) cells while preserving fetal-like features associated with phenotypic plasticity. Using this model, we identify an oncofetal state (OnFS) that is enriched in advanced tumors and linked to key features of plasticity, including epithelial-mesenchymal plasticity, as well as increased metastasis and treatment resistance. Mechanistically, we show that FGF2-AP-1 signaling maintains the OnFS program and associated phenotypic plasticity in CRC. This model offers a powerful platform for studying the fetal-like features underlying cancer cell plasticity and their role in tumor progression and treatment resistance in CRC.
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Data availability
The datasets generated during the current study are available in the GEO database (GSE261012, GSE261004). All other data used in this study are provided within the article as Source Data or are available from the corresponding authors upon reasonable request.
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Acknowledgements
We thank Shicheng Sun, Jingyang Guan, Jinlin Wang for discussion of the manuscript. We thank Hui Wang for technical assistance with High-Content live imaging and 3D reconstruction. We thank the Optical Imaging Core Facility, National Center for Protein Sciences at Peking University in Beijing, China, for assistance with the use of High-Speed Spinning Disk Confocal Microscope, RS 2000, and Ms. Yan Luo for help with the multiplex immunofluorescence assay. We thank the flow cytometry Core at the National Center for Protein Sciences at Peking University, particularly Liying Du, Hongxia Lyu, Huan Yang and Jia Luo for technical help. We thank the National Center for Protein Sciences (Beijing) — the Protein Core at Peking University for assistance with the shRNA library and Dr Tao Xu for technical support. We would like to thank the Department of Laboratory Animals of Peking University Cancer Hospital for technical advice on animal experiments. We thank the High-Performance Computing Platform of the Center for Life Science, Peking University, for the support of bioinformatics calculations. This work was supported by the National Natural Science Foundation of China (32288102) and the National Key R&D Program of China Grant (2022YFA1103103).
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L.X. designed the research, performed experiments, analyzed the data and wrote the manuscript. Y.X., L.W. and C.L. performed the bioinformatics analysis. J.S. performed the PDOX experiments. Z.G., X.W., W.H. and M.L. acquired patient informed consents and clinical samples. Y.W. participated in immunohistochemistry imaging. J.X. wrote and revised the manuscript. H.D. and J.G. designed and supervised the study. M.Q. designed the research, analyzed the data, wrote the manuscript, and supervised the study. All authors edited and approved the manuscript.
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Xiong, L., Xu, Y., Gao, Z. et al. A patient-derived organoid model captures fetal-like plasticity in colorectal cancer. Cell Res 35, 642–655 (2025). https://doi.org/10.1038/s41422-025-01139-y
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DOI: https://doi.org/10.1038/s41422-025-01139-y