Abstract
Pleomorphic sarcoma (PS) is a heterogeneous group of malignant mesenchymal tumors without a specific histological lineage of differentiation. PS is genetically characterized by genetic instability and diversity and histologically characterized by morphological pleomorphism. PS is one of the most common soft tissue sarcomas. The only curative treatment for PS is complete surgical resection, in which neoadjuvant radiotherapy is frequently combined. PS demonstrates both local recurrence and metastasis after surgical treatment, and effective systemic chemotherapy has not yet been established. Patient-derived cancer cell lines are critical tools for basic and preclinical studies in the development of chemotherapy. However, only six PS cell lines are available from the public cell bank, and none of them are derived from PS after neoadjuvant radiotherapy, despite the fact that radiotherapy causes changes in the posttreatment cancer genome. Here, we reported a novel cell line of PS from a primary tumor specimen resected after neoadjuvant radiotherapy and named it NCC-PS1-C1. NCC-PS1-C1 cells showed a variety of copy number alterations and pathological mutations in TP53. NCC-PS1-C1 cells demonstrated constant proliferation, spheroid formation, and invasion capability in vitro. The screening of antitumor agents in NCC-PS1-C1 cells showed that bortezomib and romidepsin were effective against PS. In conclusion, we report a novel PS cell line from a primary tumor resected after neoadjuvant radiotherapy. We believe that NCC-PS1-C1 will be a useful tool for the development of novel chemotherapies for PS, especially for recurrent cases after neoadjuvant radiotherapy.
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Acknowledgements
We thank Drs. F. Nakatani, S. Iwata, S. Fukushima, T. Komatsubara (Department of Musculoskeletal Oncology), Drs. C. Sato, H. Tanaka, T. Shibayama (Department of Diagnostic Pathology) and the National Cancer Center Hospital for sampling tumor tissue specimens from surgically resected materials. We also appreciate the technical assistance provided by Mrs. Y. Kuwata (Division of Rare Cancer Research), and the technical support provided by Mrs. Y. Shiotani, Mr. N. Uchiya, and Dr. T. Imai (Central Animal Division, National Cancer Center Research Institute). We would like to thank Editage (www.editage.jp) for providing English language editing services and for their constructive comments on the manuscript. This research was technically assisted by the Fundamental Innovative Oncology Core in the National Cancer Center.
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This research was supported by the Japan Agency for Medical Research and Development (grant number: 20ck0106537h0002).
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The Ethical Committee of the National Cancer Center approved the use of clinical materials for this study (approval number 2004–050). Animal experiments were conducted in compliance with the guidelines of the Institute for Laboratory Animal Research, National Cancer Center Research Institute.
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13577_2022_787_MOESM1_ESM.tiff
Supplementary file1 Supplementary Fig. 1 Short tandem repeat patterns of NCC-PS1-C1 (passage 21) and original tumor tissue. (a) Short tandem repeat patterns of NCC-PS1-C1 and (b) short tandem repeat patterns of original tumor tissue of NCC-PS1-C1 (TIFF 3923 KB)
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Akiyama, T., Yoshimatsu, Y., Noguchi, R. et al. Establishment and characterization of NCC-PS1-C1: a novel cell line of pleomorphic sarcoma from a patient after neoadjuvant radiotherapy. Human Cell 35, 2011–2019 (2022). https://doi.org/10.1007/s13577-022-00787-1
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DOI: https://doi.org/10.1007/s13577-022-00787-1