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Osteoporosis is a serious health problem worldwide. MicroRNA is a post-transcriptional regulator of gene expression by either promoting mRNA degradation or interfering with mRNA translation of specific target genes. It plays a significant role in the pathogenesis of osteoporosis. Here, we first demonstrated that miR-106b (miR-106b-5p) negatively regulated osteogenic differentiation of mesenchymal stem cells in vitro. Then, we found that miR-106b expression increased in C57BL/6 mice with glucocorticoid-induced osteoporosis (GIOP), and that silencing of miR-106b signaling protected mice against GIOP through promoting bone formation and inhibiting bone resorption. At last, we showed that miR-106b inhibited osteoblastic differentiation and bone formation partly through directly targeting bone morphogenetic protein 2 (BMP2) both in vitro and in the GIOP model. Together, our findings have identified the role and mechanism of miR-106b in negatively regulating osteogenesis. Inhibition of miR-106b might be a potential new strategy for treating osteoporosis and bone defects.
Pubmed ID: 28108317
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Web tool to predict biological targets of miRNAs by searching for presence of conserved 8mer, 7mer and 6mer sites that match seed region of each miRNA. Nonconserved sites are also predicted and sites with mismatches in seed region that are compensated by conserved 3' pairing. Used to search for predicted microRNA targets in mammals.
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