DC electric stimulation upregulates angiogenic factors in endothelial cells through activation of VEGF receptors.

DC electric stimulation upregulates angiogenic factors in endothelial cells through activation of VEGF receptors.
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DOI:
10.1016/j.cyto.2011.03.003
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发表时间:
2011-07
期刊:
影响因子:
3.8
通讯作者:
Zhao, Min
Zhao, Min
中科院分区:
医学3区
文献类型:
--
作者:
Bai, Huai;Forrester, John V.;Zhao, Min

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小的直流电场指导血管内皮细胞一些重要的血管生成反应。这些反应表明电场有希望用于调节血管生成。我们试图确定电场对内皮细胞自身一系列重要血管生成因子的转录和表达的调节。通过半定量PCR和ELISA,我们发现电刺激上调了人内皮细胞中多种血管生成蛋白的mrna和蛋白水平,其中最重要的是VEGF165、VEGF121和IL-8。mRNA水平的上调可能是特异性的,因为编码bFGF、tgf - β和eNOS的mRNA在24 h时间点不受直流电刺激的影响。抑制VEGF受体(VEGFR1或VEGFR2)信号可显著降低VEGF的产生,并完全消除IL-8的产生。直流电刺激通过VEGF受体介导的反馈回路,选择性地调节一些对血管生成重要的生长因子和细胞因子的产生。
Small direct current (DC) electric fields direct some important angiogenic responses of vascular endothelial cells. Those responses indicate promising use of electric fields to modulate angiogenesis. We sought to determine the regulation of electric fields on transcription and expression of a serial of import angiogenic factors by endothelial cells themselves. Using semi-quantitative PCR and ELISA we found that electric stimulation upregulates the levels of mRNAs and proteins of a number of angiogenic proteins, most importantly VEGF165, VEGF121 and IL-8 in human endothelial cells. The up-regulation of mRNA levels might be specific, as the mRNA encoding bFGF, TGF-beta and eNOS are not affected by DC electric stimulation at 24 h time-point. Inhibition of VEGF receptor (VEGFR1 or VEGFR2) signaling significantly decreased VEGF production and completely abolished IL-8 production. DC electric stimulation selectively regulates production of some growth factors and cytokines important for angiogenesis through a feed-back loop mediated by VEGF receptors.
DOI: 10.1126/science.573921
发表时间: 1979-01-01
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