A combination of Let-7d, Let-7g and Let-7i serves as a stable reference for normalization of serum microRNAs.

A combination of Let-7d, Let-7g and Let-7i serves as a stable reference for normalization of serum microRNAs.
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Let-7d、Let-7g 和 Let-7i 的组合可作为血清 microRNA 标准化的稳定参考

DOI:
10.1371/journal.pone.0079652
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Zhang CY
Zhang CY
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Chen X;Liang H;Guan D;Wang C;Hu X;Cui L;Chen S;Zhang C;Zhang J;Zen K;Zhang CY

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Recent studies have indicated that circulating microRNAs (miRNAs) in serum and plasma are stable and can serve as biomarkers of many human diseases. Measurement of circulating miRNAs with sufficient sensitivity and precision, however, faces some special challenges, among which proper normalization is the most critical but often an underappreciated issue. The primary aim of this study was to identify endogenous reference genes that maintain consistent levels under various conditions to serve as an internal control for quantification of serum miRNAs. We developed a strategy combining Illumina’s sequencing by synthesis (SBS) technology, reverse transcription quantitative polymerase chain reaction (RT-qPCR) assay, literature screening and statistical analysis to screen and validate the most suitable reference genes. A combination of let-7d, let-7g and let-7i is selected as a reference for the normalization of serum miRNAs and it is statistically superior to the commonly used reference genes U6, RNU44, RNU48 and miR-16. This has important implications for proper experimental design and accurate data interpretation.
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