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首页> 外文期刊>Bioelectromagnetics. >Pulsed electromagnetic fields accelerate proliferation and osteogenic gene expression in human bone marrow mesenchymal stem cells during osteogenic differentiation.
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Pulsed electromagnetic fields accelerate proliferation and osteogenic gene expression in human bone marrow mesenchymal stem cells during osteogenic differentiation.

机译:脉冲电磁场​​在成骨分化过程中加速了人骨髓间充质干细胞的增殖和成骨基因表达。

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摘要

Osteogenesis is a complex series of events involving the differentiation of mesenchymal stem cells to generate new bone. In this study, we examined the effect of pulsed electromagnetic fields (PEMFs) on cell proliferation, alkaline phosphatase (ALP) activity, mineralization of the extracellular matrix, and gene expression in bone marrow mesenchymal stem cells (BMMSCs) during osteogenic differentiation. Exposure of BMMSCs to PEMFs increased cell proliferation by 29.6% compared to untreated cells at day 1 of differentiation. Semi-quantitative RT-PCR indicated that PEMFs significantly altered temporal expression of osteogenesis-related genes, including a 2.7-fold increase in expression of the key osteogenesis regulatory gene cbfa1, compared to untreated controls. In addition, exposure to PEMFs significantly increased ALP expression during the early stages of osteogenesis and substantially enhanced mineralization near the midpoint of osteogenesis. These results suggest that PEMFs enhance early cell proliferation in BMMSC-mediated osteogenesis, and accelerate the osteogenesis.
机译:成骨是一系列复杂的事件,涉及间充质干细胞的分化以产生新的骨骼。在这项研究中,我们检查了成骨分化过程中脉冲电磁场​​(PEMF)对细胞增殖,碱性磷酸酶(ALP)活性,细胞外基质矿化以及骨髓间充质干细胞(BMMSCs)基因表达的影响。在分化的第1天,与未处理的细胞相比,将BMMSC暴露于PEMF可使细胞增殖增加29.6%。半定量RT-PCR表明,与未处理的对照组相比,PEMFs显着改变了成骨相关基因的时间表达,包括成骨关键调控基因cbfa1的表达增加了2.7倍。此外,在成骨早期阶段,暴露于PEMFs会显着增加ALP表达,并在成骨中点附近显着增强矿化作用。这些结果表明,PEMFs增强了BMMSC介导的成骨过程中的早期细胞增殖,并加速了成骨过程。

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