Abstract
Dedifferentiated chondrosarcoma (DDCS) is a high-grade subtype with a bi-morphic histological appearance of a conventional chondrosarcoma component and it can abruptly transition to a high-grade non-cartilaginous sarcoma. To better understand the biological features of DDCSs and to help develop new therapies, a novel DDCS cell line, SMU-DDCS, was established. Tissue from an open biopsy of a tumor resected from a 75-year-old patient was subjected to primary culture. The cell line was established and authenticated by assessing DNA microsatellite short tandem repeats. The cells maintained in monolayer cultures exhibited constant growth, spheroid formation, and high invasive capacity. Out of the four mice inoculated with SMU-DDCS cells, tumors developed in three mice after 2 weeks. R132C mutation was found in the IDH1 but not the IDH2 genomic DNA sequence of SMU-DDCS cells. SMU-DDCS cells exhibited low chemosensitivity to doxorubicin, methotrexate, and cisplatin. This SMU-DDCS cell line harboring an IDH1 mutation will be a useful tool for investigating DDCS development and for evaluating novel therapeutic agents against it.
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Data availability
Data are available from the corresponding author upon reasonable request.
Abbreviations
- DDCS:
-
Dedifferentiated chondrosarcoma
- IDH:
-
Isocitrate dehydrogenase
- MTX:
-
Methotrexate
- CDDP:
-
Cisplatin
- DXR:
-
Doxorubicin
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Acknowledgements
The authors would like to thank Akari Takahashi and Fuminori Daimon for technical assistance with the experiments.
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This work was partly supported by grants from JSPS KAKENHI (20K09506 to M. Emori).
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This study was approved by the Institutional Review Board of Sapporo Medical University (reference number 282-156). Written informed consent was obtained from the patient in accordance with the guidelines of the Declaration of Helsinki.
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Emori, M., Nakahashi, N., Takasawa, A. et al. Establishment and characterization of a novel dedifferentiated chondrosarcoma cell line, SMU-DDCS, harboring an IDH1 mutation. Human Cell 36, 2195–2203 (2023). https://doi.org/10.1007/s13577-023-00944-0
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DOI: https://doi.org/10.1007/s13577-023-00944-0