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首页> 外文期刊>Journal of cellular biochemistry. >MicroRNA expression profile of dexamethasone-induced human bone marrow-derived mesenchymal stem cells during osteogenic differentiation
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MicroRNA expression profile of dexamethasone-induced human bone marrow-derived mesenchymal stem cells during osteogenic differentiation

机译:地塞米松诱导的人骨髓间充质干细胞在成骨分化过程中的MicroRNA表达谱

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摘要

MiRNAs have been identified in various plants and animals where they function in post-transcriptional regulation. Although studies revealed that dexamethasone play a pivotal role in the osteogenic differentiation of human bone marrow-derived mesenchymal stem cells (hBMSCs), the identification of specific miRNAs and their regulatory roles in this process remain poorly defined. In this study, microarrays were used to analyze the miRNA expression profile of dexamethasone-induced hBMSCs derived from three donors, and RT-PCRs were used to confirm the microarray results. Nine upregulated miRNAs and seven downregulated miRNAs were identified. The putative target genes of these miRNAs were predicted using bioinformatics analysis. Subsequently, we focused our attention on the functional analysis of an upregulated miRNA, miR-23a. Overexpression of miR-23a inhibited osteogenic differentiation of hBMSCs at the cellular, mRNA, and protein levels. The results of our study provide an experimental basis for further research on miRNAs functions during osteogenic differentiation of dexamethasone-induced hBMSCs.
机译:已在各种植物和动物中鉴定出miRNA,它们在转录后调控中发挥作用。尽管研究表明地塞米松在人骨髓间充质干细胞(hBMSC)的成骨分化中起着关键作用,但是对特定miRNA的鉴定及其在该过程中的调控作用仍然知之甚少。在这项研究中,微阵列用于分析地塞米松诱导的来自三个供体的hBMSC的miRNA表达谱,并且RT-PCR用于确认微阵列的结果。鉴定出九种上调的miRNA和七种下调的miRNA。使用生物信息学分析预测了这些miRNA的假定靶基因。随后,我们将注意力集中在上调的miRNA miR-23a的功能分析上。 miR-23a的过表达在细胞,mRNA和蛋白质水平上抑制了hBMSC的成骨分化。我们的研究结果为进一步研究地塞米松诱导的hBMSCs成骨分化过程中miRNA功能的研究提供了实验基础。

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