Signal Amplification Technologies for the Detection of Nucleic Acids: from Cell-Free Analysis to Live-Cell Imaging

Applied Biochemistry and Biotechnology
Tahereh FozooniHosseinali Sasan

Abstract

Due to their unique properties, such as programmability, ligand-binding capability, and flexibility, nucleic acids can serve as analytes and/or recognition elements for biosensing. To improve the sensitivity of nucleic acid-based biosensing and hence the detection of a few copies of target molecule, different modern amplification methodologies, namely target-and-signal-based amplification strategies, have already been developed. These recent signal amplification technologies, which are capable of amplifying the signal intensity without changing the targets' copy number, have resulted in fast, reliable, and sensitive methods for nucleic acid detection. Working in cell-free settings, researchers have been able to optimize a variety of complex and quantitative methods suitable for deploying in live-cell conditions. In this study, a comprehensive review of the signal amplification technologies for the detection of nucleic acids is provided. We classify the signal amplification methodologies into enzymatic and non-enzymatic strategies with a primary focus on the methods that enable us to shift away from in vitro detecting to in vivo imaging. Finally, the future challenges and limitations of detection for cellular conditions are disc...Continue Reading

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Citations

Mar 18, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Enrico CadoniAnnemieke Madder
Sep 8, 2019·Applied Biochemistry and Biotechnology·Ravil R GarafutdinovAssol R Sakhabutdinova
Mar 15, 2018·Analytica Chimica Acta·Akram NorouziTahereh Fozooni
Dec 17, 2020·ACS Chemical Neuroscience·Jiajia ZhaoHaitao Sun

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