Journal
ACS INFECTIOUS DISEASES
Volume 5, Issue 11, Pages 1907-1914Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsinfecdis.9b00241
Keywords
dengue virus; flaviviruses; human arboviral disease; serotypes; tandem toehold-mediated displacement reactions
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Funding
- US Army Peer Reviewed Medical Research Program [W81X\ATH-16-1-0141]
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Dengue virus (DENY) is the most common human arboviral infection worldwide and can present with severe clinical manifestations. Timely DENY detection improves clinical outcomes, and identification of the DENY serotype (DENV-1-4) may provide beneficial epidemiologic data to inform the initiation of control measures. Here, DENY RNA-triggered, enzyme-free tandem toehold-mediated displacement reactions were developed to identify and serotype DENY in RNA controls and contrived samples through the amplification of a fluorescent signal detected by the use of a fluorescent scanner and a confocal microscope. Each DENY serotype was detected selectively using both imaging methods. In addition, a 384-well plate was used to prepare an array for diagnosis of the four DENY RNA serotypes from contrived clinical samples. The four serotypes of dengue virus were detected using novel enzyme-free amplification reactions, which are more facile than amplification using reverse transcriptase PCR
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