A rapid and label-free platform for virus capture and identification from clinical samples

Emerging and reemerging viruses are responsible for a number of recent epidemic outbreaks. A crucial step in predicting and controlling outbreaks is the timely and accurate characterization of emerging virus strains. We present a portable microfluidic platform containing carbon nanotube arrays with...

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Vydáno v:	Proceedings of the National Academy of Sciences - PNAS Ročník 117; číslo 2; s. 895
Hlavní autoři:	Yeh, Yin-Ting, Gulino, Kristen, Zhang, YuHe, Sabestien, Aswathy, Chou, Tsui-Wen, Zhou, Bin, Lin, Zhong, Albert, Istvan, Lu, Huaguang, Swaminathan, Venkataraman, Ghedin, Elodie, Terrones, Mauricio
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	United States 14.01.2020
Témata:	Humans Influenza A virus - isolation & purification Microbiological Techniques - instrumentation Microbiological Techniques - methods Microtechnology - methods Nanotubes, Carbon Respiratory Tract Infections - diagnosis Respiratory Tract Infections - virology Respirovirus - isolation & purification Rhinovirus - isolation & purification Sensitivity and Specificity Silicon Dioxide Spectrum Analysis, Raman - methods Staining and Labeling Virion Virology - instrumentation Virology - methods Virus Diseases - diagnosis Virus Diseases - virology Viruses - genetics Viruses - isolation & purification virus isolation microfabrication carbon nanotube infectious disease sequencing
ISSN:	1091-6490, 1091-6490
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Shrnutí:	Emerging and reemerging viruses are responsible for a number of recent epidemic outbreaks. A crucial step in predicting and controlling outbreaks is the timely and accurate characterization of emerging virus strains. We present a portable microfluidic platform containing carbon nanotube arrays with differential filtration porosity for the rapid enrichment and optical identification of viruses. Different emerging strains (or unknown viruses) can be enriched and identified in real time through a multivirus capture component in conjunction with surface-enhanced Raman spectroscopy. More importantly, after viral capture and detection on a chip, viruses remain viable and get purified in a microdevice that permits subsequent in-depth characterizations by various conventional methods. We validated this platform using different subtypes of avian influenza A viruses and human samples with respiratory infections. This technology successfully enriched rhinovirus, influenza virus, and parainfluenza viruses, and maintained the stoichiometric viral proportions when the samples contained more than one type of virus, thus emulating coinfection. Viral capture and detection took only a few minutes with a 70-fold enrichment enhancement; detection could be achieved with as little as 10 EID /mL (50% egg infective dose per microliter), with a virus specificity of 90%. After enrichment using the device, we demonstrated by sequencing that the abundance of viral-specific reads significantly increased from 4.1 to 31.8% for parainfluenza and from 0.08 to 0.44% for influenza virus. This enrichment method coupled to Raman virus identification constitutes an innovative system that could be used to quickly track and monitor viral outbreaks in real time.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1091-6490 1091-6490
DOI:	10.1073/pnas.1910113117