Abstract

Soft tissue sarcoma (STS) is a relatively common tumor in dogs. However, very few canine STS cell lines are available. This study aimed to establish a new cell line, STS-YU1, derived from a recurrence of myxosarcoma in an 11-year-old mixed-breed dog. We examined STS-YU1 for in vitro cell proliferation, migration, anticancer drug sensitivity, transcriptome analysis using next-generation sequencing (RNA-seq), and in vivo tumorigenicity in mice and compared it with previously established STS cell lines, MUMA-G and A72. The cell proliferation and migration of STS-YU1 were higher than MUMA-G although MUMA-G only exhibited tumorigenicity in mice. STS-YU1 showed dose-dependent cytotoxicity to anticancer drugs, but with weak effects. RNA-seq analysis revealed the molecular phenotype of STS-YU1 was different from that of a previously reported cell line, A72. Hence, the use of STS-YU1 would help in efficient drug screening against canine STS in vitro.

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