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An isothermal, label-free, and rapid one-step RNA amplification/detection assay for diagnosis of respiratory viral infections

tetano

Editor, Senior Moderator
Biosens Bioelectron. 2016 Nov 23;90:187-194. doi: 10.1016/j.bios.2016.11.051. [Epub ahead of print]
[h=1]An isothermal, label-free, and rapid one-step RNA amplification/detection assay for diagnosis of respiratory viral infections.[/h] Koo B[SUP]1[/SUP], Jin CE[SUP]1[/SUP], Lee TY[SUP]2[/SUP], Lee JH[SUP]3[/SUP], Park MK[SUP]4[/SUP], Sung H[SUP]5[/SUP], Park SY[SUP]6[/SUP], Lee HJ[SUP]7[/SUP], Kim SM[SUP]7[/SUP], Kim JY[SUP]7[/SUP], Kim SH[SUP]8[/SUP], Shin Y[SUP]9[/SUP].
[h=3]Author information[/h]

[h=3]Abstract[/h] Recently, RNA viral infections caused by respiratory viruses, such as influenza, parainfluenza, respiratory syncytial virus, coronavirus, and Middle East respiratory syndrome-coronavirus (MERS-CoV), and Zika virus, are a major public health threats in the world. Although myriads of diagnostic methods based on RNA amplification have been developed in the last decades, they continue to lack speed, sensitivity, and specificity for clinical use. A rapid and accurate diagnostic method is needed for appropriate control, including isolation and treatment of the patients. Here, we report an isothermal, label-free, one-step RNA amplification and detection system, termed as iROAD, for the diagnosis of respiratory diseases. It couples a one-step isothermal RNA amplification method and a bio-optical sensor for simultaneous viral RNA amplification/detection in a label-free and real-time manner. The iROAD assay offers a one-step viral RNA amplification/detection example to rapid analysis (<20min). The detection limit of iROAD assay was found to be 10-times more sensitive than that of real-time reverse transcription-PCR method. We confirmed the clinical utility of the iROAD assay by detecting viral RNAs obtained from 63 human respiratory samples. We envision that the iROAD assay will be useful and potentially adaptable for better diagnosis of emerging infectious diseases including respiratory diseases.
Copyright © 2016 Elsevier B.V. All rights reserved.


[h=4]KEYWORDS:[/h] Emerging infectious disease; Label-free biosensor; RNA amplification/detection; Respiratory disease

PMID: 27894035 DOI: 10.1016/j.bios.2016.11.051
[PubMed - as supplied by publisher]
 
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