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Enhanced Probe-Based RT-qPCR Quantification of MicroRNAs Using Poly(A) Tailing and 5′ Adaptor Ligation

Abstract : Probe-based quantitative PCR (qPCR) is a commonly used tool in the realm of real-time qPCR experiments since it is one of the most sensitive detection methods allowing an accurate and reproducible analysis. It uses real-time fluorescence from a fluorescently labeled probe that specifically targets the desired PCR product to measure DNA amplification at each cycle of the PCR. Coupled to a proper reverse transcription step, probe-based qPCR can be efficiently used for the analysis of the expression of difficult targets such as miRNAs. In this chapter, we describe the TaqMan® advanced miRNA assay in which, owing to a poly(A)-tailing step, the reverse transcription is advantageously performed at once for all the miRNAs in a given sample, and, coupled to the ligation of a 5' universal adapter, allows for a supplementary pre-qPCR amplification step increasing the sensitivity of the assay. Along this protocol, we also provide our general guidelines and advices to perform a reliable and successful quantitative analysis.
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https://hal.univ-lorraine.fr/hal-02517653
Contributor : Philippe de Carvalho <>
Submitted on : Tuesday, March 24, 2020 - 4:51:50 PM
Last modification on : Wednesday, March 25, 2020 - 1:37:40 AM

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Valentin Vautrot, Isabelle Behm-Ansmant. Enhanced Probe-Based RT-qPCR Quantification of MicroRNAs Using Poly(A) Tailing and 5′ Adaptor Ligation. Methods in Molecular Biology, pp.39-54, 2020, ⟨10.1007/978-1-4939-9833-3_4⟩. ⟨hal-02517653⟩

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