Fig. 1

MiR-503 expression is downregulated in gastric tissues and cells. a The expression levels of miR-503 in 46 GC tissues and adjacent normal tissues were investigated and qRT-PCR analyses. b Association between miR-503 expression and tumor size and c lymph node metastasis in patients. d Kaplan–Meier analysis and log rank test showed that GC patients with lower miR-503 expression level (n = 24) predicted poorer OS rate than those patients with higher miR-503 expression level (n = 22). e The expression levels of miR-503 was detected in an immortalized normal gastric mucosal epithelial cell line (GES-1) and human GC cell lines MKN-45, BGC-823, SGC-7901, MKN-28, and AGS using qRT-PCR. All values are presented as mean ± SD, *P < 0.05