LncRNA PCED1B-AS1 knockdown inhibits osteosarcoma via methylation-mediated miR-10a downregulation

BACKGROUND: LncRNA PCED1B-AS1 (PCED1B-AS1) promotes glioma. This study aimed to investigate its role in osteosarcoma (OS). METHODS: The study included 60 OS patients. Accumulation of miR-10a and PCED1B-AS1 in tissues from OS patients and cell lines was determined by RT-qPCR. Cell transfections were performed for interaction analysis. Participation of PCED1B-AS1 siRNA silencing and miR-10a overexpression in proliferation, invasion, and migration of U2OS and MG-63 cells was analyzed by cell proliferation assay and Transwell assay. RESULTS: PCED1B-AS1 level was increased in OS and positively correlated with miR-10a level. In OS cells, PCED1B-AS1 siRNA silencing downregulated miR-10a. Methylation-specific PCR analysis showed that PCED1B-AS1 siRNA silencing decreased the methylation of miR-10a gene promoter. Moreover, PCED1B-AS1 siRNA silencing suppressed OS cell proliferation, invasion, and migration. In addition, miR-10a overexpression attenuated the effects of PCED1B-AS1 siRNA silencing. CONCLUSION: PCED1B-AS1 knockdown may inhibit OS cell proliferation and movement by regulating miR-10 gene methylation. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s13018-022-03284-1.