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  • Title: Establishment and characterization of NCC-PS1-C1: a novel cell line of pleomorphic sarcoma from a patient after neoadjuvant radiotherapy.
    Author: Akiyama T, Yoshimatsu Y, Noguchi R, Sin Y, Tsuchiya R, Ono T, Sugaya J, Kobayashi E, Yoshida A, Ohtori S, Kawai A, Kondo T.
    Journal: Hum Cell; 2022 Nov; 35(6):2011-2019. PubMed ID: 36103079.
    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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