MiR-708 promotes steroid-induced osteonecrosis of femoral head, suppresses osteogenic differentiation by targeting SMAD3

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MiR-708 promotes steroid-induced osteonecrosis of femoral head, suppresses osteogenic differentiation by targeting SMAD3

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Title: MiR-708 promotes steroid-induced osteonecrosis of femoral head, suppresses osteogenic differentiation by targeting SMAD3
Author: Hao, Cheng; Yang, Shuhua; Xu, Weihua; Shen, Jacson K.; Ye, Shunan; Liu, Xianzhe; Dong, Zhe; Xiao, Baojun; Feng, Yong

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Citation: Hao, Cheng, Shuhua Yang, Weihua Xu, Jacson K. Shen, Shunan Ye, Xianzhe Liu, Zhe Dong, Baojun Xiao, and Yong Feng. 2016. “MiR-708 promotes steroid-induced osteonecrosis of femoral head, suppresses osteogenic differentiation by targeting SMAD3.” Scientific Reports 6 (1): 22599. doi:10.1038/srep22599. http://dx.doi.org/10.1038/srep22599.
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Abstract: Steroid-induced osteonecrosis of femoral head (ONFH) is a serious complication of glucocorticoid (GC) use. We investigated the differential expression of miRs in the mesenchymal stem cells (MSCs) of patients with ONFH, and aimed to explain the relationship between GC use and the development of MSC dysfunction in ONFH. Cells were collected from bone marrow of patients with ONFH. Samples were assigned to either GCs Group or Control Group at 1:1 matched with control. We then used miRNA microarray analysis and real-time PCR to identify the differentially expressed miRs. We also induced normal MSCs with GCs to verify the differential expression above. Subsequently, we selected some of the miRs for further studies, including miRNA target and pathway prediction, and functional analysis. We discovered that miR-708 was upregulated in ONFH patients and GC-treated MSCs. SMAD3 was identified as a direct target gene of miR-708, and functional analysis demonstrated that miR-708 could markedly suppress osteogenic differentiation and adipogenesis differentiation of MSCs. Inhibition of miR-708 rescued the suppressive effect of GC on osteonecrosis. Therefore, we determined that GC use resulted in overexpression of miR-708 in MSCs, and thus, targeting miR-708 may serve as a novel therapeutic biomarker for the prevention and treatment of ONFH.
Published Version: doi:10.1038/srep22599
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4773864/pdf/
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Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:26318577
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