Abstract
Solitary fibrous tumors (SFTs) are rare mesenchymal tumors characterized by recurrent NAB2::STAT6 gene fusion, which are associated with an unpredictable clinical course, including the potential for recurrence or metastasis. Current therapeutic approaches for relapsed cases remain ineffective, and there is no established standard of care for SFTs. Although patient-derived cancer cell lines are fundamental research tools, only a few cell lines have been developed for SFTs. To address this, we established a novel SFT cell line, NCC-SFT1-C1, derived from surgically resected tumor tissues of a patient with SFT. The cell line retains the characteristic recurrent NAB2::STAT6 gene fusion in concordance with the matched original tumor. These cells exhibit moderate proliferation, invasion ability, and spheroid formation. We demonstrated that NCC-SFT1-C1 cells are useful for the high-throughput screening of the antiproliferative effects of 221 oncology drugs. Therefore, the NCC-SFT1-C1 cell line is a valuable tool for basic and preclinical studies on SFT.




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Acknowledgements
We thank Drs. S. Iwata, K. Ogura, and H. Kondo (Department of Musculoskeletal Oncology and Rehabilitation Medicine, the National Cancer Center Hospital) for sampling tumor tissue specimens from surgically resected materials. We also appreciate the technical assistance provided by Mrs. Y. Shiotani (Central Animal Division, National Cancer Center Research Institute). We would also like to thank Editage (www.editage.jp) for their help with English language editing and their constructive comments on the manuscript. This research was technically assisted by the Fundamental Innovative Oncology Core at the National Cancer Center.
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This research was supported by the Japan Agency for Medical Research and Development (grant number: 20ck0106537h).
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This study was conducted in accordance with the principles of the Declaration of Helsinki. This study was approved by the Ethics Committee of the National Cancer Center (approval number 2004–050).
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Iwata, S., Noguchi, R., Oosaki, J. et al. Establishment and characterization of NCC-SFT1-C1: a novel patient-derived cell line of solitary fibrous tumor. Human Cell 38, 49 (2025). https://doi.org/10.1007/s13577-025-01175-1
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DOI: https://doi.org/10.1007/s13577-025-01175-1