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Sci Rep:STBEV或可导致先兆子痫患者冠状动脉内皮功能障碍

2017-08-08 MedSci MedSci原创

在怀孕相关综合征先兆子痫(PE)期间,释放到母体循环中的胎盘合胞体滋养层细胞外囊泡(STBEV)和游离胎儿血红蛋白(HbF)的水平增加。在本研究中,研究人员探究了原代冠状动脉内皮细胞(HCAEC)对正常和PE STBEVs的摄取以及游离HbF对这种摄取的影响。结果表明,STBEVs内化至HCAEC内,并将胎盘特异性miRNA从STBEVs转移到这些受体细胞的内质网和线粒体。此外,转移的miRNA是

在怀孕相关综合征先兆子痫(PE)期间,释放到母体循环中的胎盘合胞体滋养层细胞外囊泡(STBEV)和游离胎儿血红蛋白(HbF)的水平增加。在本研究中,研究人员探究了原代冠状动脉内皮细胞(HCAEC)对正常和PE STBEVs的摄取以及游离HbF对这种摄取的影响。

结果表明,STBEVs内化至HCAEC内,并将胎盘特异性miRNA从STBEVs转移到这些受体细胞的内质网和线粒体。此外,转移的miRNA是功能性的,导致特异性靶基因的下调,包括PE相关基因fms相关的酪氨酸激酶1(FLT1)。当用HbF共同治疗正常的STBEVs时,miRNA沉积从线粒体改变为ER,并且细胞膜变得皱褶,正如PE STBEVs所见。

总之,该研究结果表明,STBEVs或可引起内皮损伤,并有助于PE典型的内皮功能障碍。miRNA介导的基因表达效应可能有助于PE中氧化和内质网应激,以及内皮细胞重编程,这可能会增加PE后期女性心血管疾病的发生风险。

原始出处:


Tina Cronqvist, Dionne Tannetta, et al., Syncytiotrophoblast derived extracellular vesicles transfer functional placental miRNAs to primary human endothelial cells. Sci Rep. 2017; 7: 4558. Published online 2017 Jul 4. doi:  10.1038/s41598-017-04468-0.


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