Figure 3.
miR-23b promoter is hypermethylated in MM cells. Sequenom's EpiTYPER epigram panel representative of the methylation status (a) of the two CpG islands located within the promoter region of miR-23b or of (b) a 1536 bp region located 843 bp upstream and 597 bp downstream of miR-23b. Methylation data are displayed as color-filled circle and the color spectrum indicates the range of methylation of each CpG. Empty gray circles correspond to CpG sites that failed analysis. Data are reported as mean of three independents experiments. (c) Quantitative reverse transcriptase–polymerase chain reaction analysis for miR-23b expression in KMS11 and MM1S cells treated with 1 μm 5-azacytidine (5-AZA) for 48 h. *P<0.01.