(A) The putative binding sequence of miR-139-5p in wild-type and mutant SLC39A7-3′UTR. (B) The relative luciferase activity with wild-type or mutant SLC39A7-3′UTR in HGC-27 cells transfected with the miR-139-5p or miR-NC were analyzed. (C) qRT-PCR was applied to assess SLC39A7 mRNA expression in miR-139-5p or miR-139-5p inhibitor transfected group and respective NC group. (D,E) mRNA levels of miR-139-5p in gastric tissues and cell lines were detected via qRT-PCR. (F) Spearman’s correlation analysis was recruited to explore the correlation between miR-139-5p and SLC39A7 mRNA level. **P<0.01 vs miR-139-5p and ##P<0.01 vs miR-139-5p inhibitor.