Analysis of circulating microRNA biomarkers in plasma and serum using quantitative reverse transcription-PCR (qRT-PCR).

Analysis of circulating microRNA biomarkers in plasma and serum using quantitative reverse transcription-PCR (qRT-PCR).
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DOI:
10.1016/j.ymeth.2010.01.032
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发表时间:
2010-04
期刊:
影响因子:
4.8
通讯作者:
Tewari, Muneesh
Tewari, Muneesh
中科院分区:
生物学3区
文献类型:
--
作者:
Kroh, Evan M.;Parkin, Rachael K.;Mitchell, Patrick S.;Tewari, Muneesh

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MicroRNAs (miRNAs)是一种小的(约22 nt) rna,通过结合和抑制特定靶mrna的活性,在基因调控网络中发挥重要作用。最近的研究表明,mirna在血液中以稳定的无细胞形式循环,血浆或血清中特定mirna的丰度可以作为癌症和其他疾病的生物标志物。循环microrna作为生物标志物的测量存在一些特殊的挑战,包括与分析前变异和数据归一化相关的挑战。我们在这里描述了我们的qRT-PCR分析循环mirna作为生物标志物的程序,并讨论了样品制备,实验设计和数据分析的相关问题。
MicroRNAs (miRNAs) are small (~22 nt) RNAs that play important roles in gene regulatory networks by binding to and repressing the activity of specific target mRNAs. Recent studies have indicated that miRNAs circulate in a stable, cell-free form in the bloodstream and that the abundance of specific miRNAs in plasma or serum can serve as biomarkers of cancer and other diseases. Measurement of circulating microRNAs as biomarkers is associated with some special challenges, including those related to pre-analytic variation and data normalization. We describe here our procedure for qRT-PCR analysis of circulating miRNAs as biomarkers, and discuss relevant issues of sample preparation, experimental design and data analysis.
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