Journal
CLINICAL AND EXPERIMENTAL PHARMACOLOGY AND PHYSIOLOGY
Volume 45, Issue 6, Pages 602-613Publisher
WILEY
DOI: 10.1111/1440-1681.12912
Keywords
bone; metabolism; microRNA
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Funding
- National Natural Science Foundation of China [81270961]
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MicroRNAs (miRNAs) play important roles in bone metabolism and aging. Here we show that miR-96 was markedly up-regulated in serum of elderly patients with osteoporosis by miRNA microarray analysis and qRT-PCR. Moreover miR-96 was also up-regulated in bone marrow mesenchymal stem cells (BMSCs) of aged humans and mice. Our results show that the over-expression of miR-96 reduced osteogenic differentiation of BMSCs, whereas the inhibition of miR-96 increased osteogenic differentiation of BMSCs. At the molecular level, miR-96 regulated osteogenesis by targeting osterix. Interestingly, over-expression of miR-96 in young mice by intravenous injection of agomiR-96 developed a low bone mass due to impaired osteogenesis. However, inhibition of miR-96 in aged mice attenuated the age-related bone loss. Thus, our data suggest that miR-96 regulates osteogenesis and may represent a potential diagnostic marker or therapeutic target for age-related bone loss.
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