Exposure to Concentrated Ambient Fine Particulate Matter Induces Vascular Endothelial Dysfunction via miR-21.

Exposure to Concentrated Ambient Fine Particulate Matter Induces Vascular Endothelial Dysfunction via miR-21.
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暴露于浓缩的环境细颗粒物通过 miR-21 诱导血管内皮功能障碍

DOI:
10.7150/ijbs.19868
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发表时间:
2017
影响因子:
9.2
通讯作者:
Zhang QQ
Zhang QQ
中科院分区:
生物学2区
文献类型:
--
作者:
Dai J;Chen W;Lin Y;Wang S;Guo X;Zhang QQ

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Vascular endothelial permeability transition does not cause significant lesions, but enhanced permeability may contribute to the development of vascular and other diseases, including atherosclerosis, hypertension, heart failure and cancer. Therefore, elucidating the effect of Particulate Matter 2.5 (PM2.5) on vascular endothelial permeability could help prevent disease that might be caused by PM2.5. Our previous study and the present one revealed that PM2.5 significantly increased the permeability of vascular endothelial cells and disrupted the barrier function of the vascular endothelium in Sprague Dawley (SD) rats. We found that the effect occurred mainly through induction of signal transducer and activator of transcription 3 (STAT3) phosphorylation, further transcriptional regulation of microRNA21 (miR-21) and promotion of miR-21 expression. These changes post-transcriptionally repress tissue inhibitor of metalloproteinases 3 (TIMP3) and promote matrix metalloproteinases 9 (MMP9) expression. This work provides evidence that PM2.5 exerts direct inhibitory action on vascular endothelial barrier function and might give rise to a number of vascular diseases.
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