Abstract
Pleomorphic liposarcoma (PLPS) is a highly malignant subtype of liposarcoma. It is histologically characterized by the presence of pleomorphic lipoblasts and can be accompanied by morphological foci that demonstrate differentiation to other histological lineages. PLPS is rare and accounts for only 5% of all liposarcomas. PLPS exhibits poor prognosis; distant metastases develop in 30–50% of patients after curative surgical resection, tumor-associated mortality occurs in up to 50% of patients, and effective chemotherapies for PLPS have not been established. The histological accompaniment of other morphological foci is an important prognostic factor for PLPS, and the development of chemotherapies for PLPS considering the histological morphology is necessary. Patient-derived cancer cell lines are critical tools for basic and pre-clinical research to understand diseases and develop chemotherapies. However, only two PLPS-derived cell lines have been reported, and their donor tumor specimens did not histologically accompany morphological foci other than lipoblasts. Thus, there is a need to establish patient-derived PLPS cell lines from various histological morphologies. Here, we report a novel PLPS cell line from a tumor specimen that histologically accompanied pleomorphic and bone-forming foci, and named it NCC-PLPS2-C1. NCC-PLPS2-C1 cells demonstrated constant proliferation, spheroid formation, and invasion capability in vitro. Screening of antitumor agents in NCC-PLPS2-C1 cells showed that bortezomib, romidepsin, and trabectedin were effective against NCC-PLPS2-C1. In conclusion, we report the first PLPS cell line from a tumor specimen that was morphologically accompanied by pleomorphic and born-forming foci. We believe that NCC-PLPS2-C1 will be useful for the development of novel chemotherapies for PLPS.
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Acknowledgements
We thank Drs. E. Kobayashi, K. Ogura, S. Osaki, S. Fukushima, K. Sato, S. Ishihara, Y. Toda (Department of Musculoskeletal Oncology, the National Cancer Center Hospital) for sampling tumor tissue specimens from surgically resected materials. We also appreciate 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 this manuscript. This study was technically assisted by the Fundamental Innovative Oncology Core of the National Cancer Center.
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This research was supported by the Japan Agency for Medical Research and Development (grant number: 20ck0106537h0003).
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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_828_MOESM1_ESM.tiff
Supplementary Fig. 1 Short tandem repeat patterns of NCC-PLPS2-C1 cells and original tumor tissue. (A) Short tandem repeat patterns of NCC-PLPS2-C1 cells (p20) and (B) short tandem repeat patterns of original tumor tissue of NCC-PLPS2-C1 (TIFF 3922 kb)
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Akiyama, T., Yoshimatsu, Y., Noguchi, R. et al. Establishment and characterization of NCC-PLPS2-C1: a novel cell line of pleomorphic liposarcoma. Human Cell 36, 468–475 (2023). https://doi.org/10.1007/s13577-022-00828-9
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DOI: https://doi.org/10.1007/s13577-022-00828-9