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Pulsed electromagnetic fields promote the proliferation and differentiation of osteoblasts by reinforcing intracellular calcium transients

机译:脉冲电磁场通过增强细胞内钙瞬变来促进成骨细胞的增殖和分化

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摘要

Pulsed electromagnetic fields (PEMF) can be used to treat bone-related diseases, but the underlying mechanism remains unclear, especially the process by which PEMFs initiate biological effects. In this study, we demonstrated the effects of PEMF on proliferation and differentiation of osteoblasts using the model of calcium transients induced by high extracellular calcium. Our results showed that PEMF can increase both the percentage of responding cells and amplitude of intracellular calcium transients induced by high extracellular calcium stimulation. Compared with corresponding extracellular calcium levels, PEMF stimulation increased proliferation and differentiation of osteoblasts and related gene expressions, such as insulin-like growth factor 1 (IGF-1), alkaline phosphatase (ALP), runt-related transcription factor 2 (Runx2), and osteocalcin (OCN), which can be completely abolished by BAPTA-AM. Moreover, PEMF did not affect proliferation and differentiation of osteoblasts if no intracellular calcium transient was present in osteoblasts during PEMF exposure. Our results revealed that PEMF affects osteoblast proliferation and differentiation through enhanced intracellular calcium transients, which provided a cue to treat bone-related diseases with PEMF. Bioelectromagnetics. 38:541-549, 2017. (c) 2017 Wiley Periodicals, Inc.
机译:脉冲电磁场​​(PEMF)可用于治疗骨骼相关疾病,但潜在的机制仍然不清楚,尤其是PEMFS引发生物效应的过程。在本研究中,我们证明了PEMF使用高细胞外钙诱导的钙瞬变模型对成骨细胞的增殖和分化的影响。我们的结果表明,PEMF可以增加高细胞外钙刺激诱导的细胞内钙瞬变的响应细胞和振幅的百分比。与相应的细胞外钙水平相比,PEMF刺激增加了成骨细胞和相关基因表达的增殖和分化,例如胰岛素样生长因子1(IGF-1),碱性磷酸酶(ALP),runt相关转录因子2(RUNX2),和骨钙素(OCN),可以完全被Bapta-am完全废除。此外,如果在PEMF暴露过程中没有在成骨细胞中存在细胞内钙瞬变,PEMF不会影响成骨细胞的增殖和分化。我们的研究结果表明,PEMF通过增强的细胞内钙瞬变影响成骨细胞增殖和分化,这提供了一种用PEMF治疗骨相关疾病的提示。生物电磁学。 38:541-549,2017。(c)2017年Wiley期刊,Inc。

著录项

  • 来源
    《Bioelectromagnetics.》 |2017年第7期|共9页
  • 作者单位

    Xi An Jiao Tong Univ Sch Life Sci &

    Technol Minist Educ Key Lab Biomed Informat Engn Xianning;

    Xi An Jiao Tong Univ Sch Life Sci &

    Technol Minist Educ Key Lab Biomed Informat Engn Xianning;

    Xi Jing Univ Xian Shaanxi Peoples R China;

    Xi Jing Univ Xian Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Sch Life Sci &

    Technol Minist Educ Key Lab Biomed Informat Engn Xianning;

    Xi An Jiao Tong Univ Sch Life Sci &

    Technol Minist Educ Key Lab Biomed Informat Engn Xianning;

    Xi An Jiao Tong Univ Sch Life Sci &

    Technol Minist Educ Key Lab Biomed Informat Engn Xianning;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物物理学;
  • 关键词

    PEMF; intracellular calcium transients; osteoblasts; proliferation; differentiation;

    机译:PEMF;细胞内钙瞬变;成骨细胞;增殖;分化;

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