miRNA in plasma exosome is stable under different storage conditions.

miRNA in plasma exosome is stable under different storage conditions.
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血浆外泌体中的 miRNA 在不同储存条件下保持稳定

DOI:
10.3390/molecules19021568
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发表时间:
2014-01-27
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Lu Z
Lu Z
中科院分区:
其他
文献类型:
--
作者:
Ge Q;Zhou Y;Lu J;Bai Y;Xie X;Lu Z

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外泌体是由大多数细胞类型分泌的小的膜结合囊泡。外泌体含有各种功能性蛋白质、mRNA和microRNA(miRNA),其可用于诊断和治疗目的。我们应该如何保存RNA分离前的样品,以及这些长期保存的样品是否可以用于循环RNA的研究,因为RNase是未知的。该研究的目的是确定外泌体和血浆中循环miRNA的稳定性。通过使用ExoQuick沉淀方法从血浆样品中分离外泌体。用Qiagen miRNeasy Mini试剂盒从外来体和相应的血浆样品中提取RNA。通过Qubit® RNA HS Assay Kit测量RNA的浓度,并使用定量PCR检测单个miRNA表达水平。结果表明,外泌体miRNA在不同的储存条件下显示出额外的稳定性,并且除了在4 °C下短期储存外,对血浆miRNA没有显著影响。因此,基于它们在各种储存条件下的稳定性,外泌体miRNA可以是良好的生物标志物。
Exosomes are small membrane-bound vesicles secreted by most cell types. Exosomes contain various functional proteins, mRNAs and microRNAs (miRNAs) that could be used for diagnostic and therapeutic purposes. How we should store the samples before RNA isolation and whether those long term stored samples could be used for circulating RNA investigation because of RNase is unknown. The aim of the study was to determine the stability of circulating miRNA in exosomes and plasma. Exosomes were isolated from plasma samples by using ExoQuick Precipitation methods. RNA was extracted from exosomes and the corresponding plasma samples with a Qiagen miRNeasy Mini kit. The concentration of RNA was measured by a Qubit® RNA HS Assay Kit, and quantitative PCR was used for individual miRNA expression level detection. Results showed that exosomal miRNA showed extra stability under different storage conditions and no significant influence on plasma miRNA, except for short term storage at 4 °C. It is thus indicated that exosome miRNAs can be good biomarkers based on their stability under various storage conditions.
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