SCI REP:miR-143和miR-145通过异常调节细胞粘附,凋亡和增殖来破坏宫颈上皮屏障

2017-06-08 MedSci MedSci原创

目前,调控早产(PTB) - 相关宫颈重建的分子机制仍不清楚。以前的工作表明,女性的宫颈细胞中,miRNA的表达谱改变,即miR-143和miR-145显着增加,会导致PTB的发生。这项研究的目的就是确定miR-143和miR-145对宫颈上皮屏障的影响,并阐明这些miRNA调节子宫颈上皮细胞功能的机制。

目前,调控早产(PTB) - 相关宫颈重建的分子机制仍不清楚。以前的工作表明,女性的宫颈细胞中,miRNA的表达谱改变,即miR-143和miR-145显着增加,会导致PTB的发生。这项研究的目的就是确定miR-143和miR-145对宫颈上皮屏障的影响,并阐明这些miRNA调节子宫颈上皮细胞功能的机制。用miR-阴性对照、miR-143及miR-145分别转染的子宫颈阴道部细胞和子宫颈内细胞,并进行细胞透性和流式细胞术实验,以检测细胞凋亡和增殖。并且对与细胞粘附,凋亡和增殖相关的miR-143和miR-145靶基因进行检测。miR-143和miR-145转染的宫颈上皮细胞中上皮细胞通透性增加。miR-143和miR-145的过表达时,细胞粘附基因JAM-A和FSCN1表达下调。miR-143和miR-145转染后,通过增加细胞凋亡以及启动细胞周期停滞来减少细胞增殖而降低子宫颈细胞数。另外,凋亡基因BCL2和BIRC5以及增殖基因CDK1和CCND2的表达被miR-143和miR-145抑制。这些发现表明miR-143和miR-145通过不同的机制在宫颈上皮屏障破坏中发挥重要作用,并且可能有助于与PTB相关的早期宫颈重塑。

原文出处:

Lauren Anton,Amy G. Brown,Michal A. Elovitz,et al.miR-143 and miR-145 disrupt the cervical epithelial barrier through dysregulation of cell adhesion, apoptosis and proliferation.[J]2017 June 8.doi:10.1038/s41598-017-03217-7

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    2017-09-19 smallant2002
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    2017-06-10 一闲