Downregulation of miR-10B* is correlated with altered expression of mitotic kinases in osteosarcoma.

ABSTRACT

Dysregulated mitotic kinases have frequently been associated with cancer. Changes in their expression might result from diverse mechanisms including avoidance of the tight regulation exerted by miRNAs. Herein we show that miR-10b* is downregulated in osteosarcoma samples and demonstrate its correlation with PLK1, PLK4, BUB1, and BUBR1, which are strongly intercorrelated. The selection of miRNAs that coordinately target and regulate multiple members of cancer-related pathways are particularly advantageous to tumors. Thus, even though no associations with clinical parameters were found, our data place miR-10b* as a tumor suppressor that might contribute to guarantee genomic stability, deserving further functional confirmation.