miRNA gene miRNA_log2FC miRNA_pvalue gene_log2FC gene_pvalue interactions correlation_beta correlation_pvalue PMID evidence outcome cancer hsa-miR-106b-3p BMI1 0.0129891760913399 0.902224220985325 0.317642163654291 0.000513144270188165 miRNAWalker2_validate -0.130351311102409 1.16648423792387e-05 NA NA NA hsa-miR-15a-5p BMI1 0.812445324157528 4.50263417099822e-20 0.317642163654291 0.000513144270188165 miRNAWalker2_validate;miRTarBase -0.106371353467624 0.0022559342681427 27596816 Our results suggest that overexpression of miR-15a and miR-16 mediates down-regulation of BMI1 and leads to mitochondrial mediated apoptosis breast cancer hsa-miR-218-5p BMI1 -1.02621788318234 2.9221925445771e-23 0.317642163654291 0.000513144270188165 miRNAWalker2_validate;miRNATAP -0.153596639831947 1.93660597616408e-07 25999024;24839010;23255074 Western blot analysis and luciferase reporter assay revealed that miR-218 decreased BMI1 expression by binding to the putative binding sites in its 3'-untranslated region 3'-UTR; The BMI1 mRNA expression levels were markedly increased and negatively correlated with the miR-218 expression level in the ESCC tissues; The knockdown of BMI1 by siRNA showed the same phenocopy as the effect of miR-218 on ESCC cells indicating that BMI1 was a major target of miR-218; In the present study our findings confirm miR-218 as a tumor suppressor and identify BMI1 as a novel target of miR-218 in ESCC;We then used the Dual-Luciferase assay system quantitative real-time RT-PCR qRT-PCR and Western blot analysis to determine that miR-218 targeted the 3'-UTR of the oncogenes CIP2A and BMI1 and thus regulated the biological process of melanoma; We further demonstrated that CIP2A and BMI1 knockdown phenocopies miR-218 overexpression; By targeting CIP2A and BMI1 miR-218 regulates the proliferation migration and invasion of the melanoma cell lines A375 and SK-MEL-2 indicating that miR-218 plays a pivotal role in melanoma development;Potential target genes of miR-218 were predicted and BMI1 polycomb ring finger oncogene BMI-1 a polycomb ring finger oncogene was identified as one of the potential targets ;; esophageal cancer;melanoma;colon cancer hsa-miR-27a-3p BMI1 0.388496361379095 1.42373532086331e-05 0.317642163654291 0.000513144270188165 miRNAWalker2_validate -0.214266920264547 7.59006741318292e-10 NA NA NA hsa-miR-455-5p BMI1 0.284641224662773 0.0357572339594277 0.317642163654291 0.000513144270188165 miRanda -0.182962103826668 1.06459376538527e-15 NA NA NA