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  • Title: Establishment and characterization of NCC-PLPS2-C1: a novel cell line of pleomorphic liposarcoma.
    Author: Akiyama T, Yoshimatsu Y, Noguchi R, Sin Y, Osaki J, Adachi Y, Ono T, Tsuchiya R, Sato C, Iwata S, Kojima N, Yoshida A, Ohtori S, Kawai A, Kondo T.
    Journal: Hum Cell; 2023 Jan; 36(1):468-475. PubMed ID: 36436139.
    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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