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首页> 外文期刊>Journal of Extracellular Vesicles >Growth factor stimulation of cardiomyocytes induces changes in the transcriptional contents of secreted exosomes
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Growth factor stimulation of cardiomyocytes induces changes in the transcriptional contents of secreted exosomes

机译:心肌细胞的生长因子刺激诱导分泌的外泌体转录内容的变化

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Exosomes are nano-sized extracellular vesicles, released from various cells, which can stimulate or repress responses in targets cells. We recently reported that cultured cardiomyocytes are able to release exosomes and that they, in turn, are involved in facilitating events in target cells by alteration of gene expression. We investigated whether external stimuli of the cardiomyocyte might influence the transcriptional content of the released exosomes.Exosomes were isolated from media collected from cultured cardiomyocytes (HL-1) with or without growth factor treatment (TGF-β2 and PDGF-BB), with a series of differential centrifugations, including preparative ultracentrifugation and separation with a sucrose gradient. The exosomes were characterized with dynamic light scattering (DLS), electron microscopy (EM) and Western blot and analyzed with Illumina whole genome microarray gene expression.The exosomes were rounded in shape and had an average size of 50–90 nm in diameter with no difference between treat...
机译:外泌体是从各种细胞中释放出来的纳米级细胞外囊泡,可以刺激或抑制靶细胞的反应。我们最近报道,培养的心肌细胞能够释放外泌体,而它们又通过基因表达的改变而参与促进靶细胞中的事件。我们调查了心肌细胞的外部刺激是否会影响释放的外泌体的转录含量。外泌体是从培养的心肌细胞(HL-1)收集的培养基中分离的,这些培养基经过或未经过生长因子处理(TGF-β2和PDGF-BB)系列差速离心,包括制备型超速离心和蔗糖梯度分离。外泌体通过动态光散射(DLS),电子显微镜(EM)和Western印迹进行表征,并用Illumina全基因组微阵列基因表达进行分析。外泌体呈圆形,平均直径为50-90 nm,没有区别对待...

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