MUC1 and monocytic leukemia: In a previous study, miRNA array results demonstrated the upregulation of 340 functionally mature miRNAs in MUC1-silenced MOLM-14 cells, as well as the upregulation of 154 functionally mature miRNAs, including miR-34a and miR-200c, in MUC1-silenced human monocytic leukemia cells (THP-1) 62.