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Table 4 Main methods used for miRNA quantification and current limitations for their application as a screening method for cancer detection

From: miRNAs as biomarkers for early cancer detection and their application in the development of new diagnostic tools

Method Technique Advantages of technology Limitations Sensibility Reference
Microarray platforms Direct hybridization with probes present in the platform Potential scalability; quantitative results; few steps until final results Needed of specialized professionals and equipment; requires the previous setup of miRNA panel; elevated costs of customized panel fmol [178, 179]
qPCR miRNA amplification and quantification; results were detected using optical sensors Widespread technique; quantitative results; few steps until final results Needed of specialized professionals and equipment; time until final results; requires the previous setup of miRNA panel fmol [162]
Next-generation sequencing Direct sequencing of miRNAs present in the sample Quantification of all miRNAs in the sample; high accuracy Elevated operational cost of analysis; needed of specialized professionals and equipment; time until final results fmol [180, 181]
Northern blot Hybridization with probes and detected according to their sequences and molecular weight Widespread technique Semi-quantitative method; laborious and multiple steps protocol pmol [182, 183]
Isothermal amplification miRNA amplification and quantification; results were detected using optical sensor Low-cost technique; potential scalability Nonspecific background amplification; multiple steps protocol; Scalability using clinical samples fmol [184,185,186]
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