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Shen KM, Sabbavarapu NM, Fu CY, Jan JT, Wang JR, Hung SC, Lee GB. An integrated microfluidic system for rapid detection and multiple subtyping of influenza A viruses by using glycan-coated magnetic beads and RT-PCR. LAB ON A CHIP 2019; 19:1277-1286. [PMID: 30839009 DOI: 10.1039/c8lc01369a] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The influenza A (InfA) virus, which poses a significant global public health threat, is routinely classified into "subtypes" based on viral hemagglutinin (HA) and neuraminidase (NA) antigens. Because there are nearly 200 viral subtypes, current diagnostic approaches require multiplexing or array systems to cover various subtypes of HA and NA. A microfluidic chip featuring a HA × NA array was consequently developed herein for diagnosis and subtyping of InfA viruses via the use of glycan-coated magnetic beads followed by reverse transcription (RT) polymerase chain reaction (PCR). Up to 12 InfA subtypes were simultaneously detected in an automated fashion in less than 100 minutes on this microfluidic platform, representing a significant improvement in analysis speed compared to benchtop RT-PCR and chip-based microarray systems. The limits of detection of the RT-PCR assays ranged from 40 to 3000 copy numbers for the different subtypes of InfA viruses, around two orders of magnitude higher than in previous studies using microfluidic technologies. In summary, the array-type microfluidic chip system provides a rapid, sensitive, and fully automated approach for detection and multiple subtyping of InfA.
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Affiliation(s)
- Kao-Mai Shen
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, 30013 Taiwan.
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Teo J, Pietro PD, Biagio FS, Capozzoli M, Deng YM, Barr I, Caldwell N, Ong KL, Sato M, Tan R, Lin R. VereFlu™: an integrated multiplex RT-PCR and microarray assay for rapid detection and identification of human influenza A and B viruses using lab-on-chip technology. Arch Virol 2011; 156:1371-8. [PMID: 21503642 PMCID: PMC7087244 DOI: 10.1007/s00705-011-0999-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Accepted: 03/31/2011] [Indexed: 12/16/2022]
Abstract
Threatening sporadic outbreaks of avian influenza and the H1N1 pandemic of 2009 highlight the need for rapid and accurate detection and typing of influenza viruses. In this paper, we describe the validation of the VereFlu™ Lab-on-Chip Influenza Assay, which is based on the integration of two technologies: multiplex reverse transcription (RT)-PCR followed by microarray amplicon detection. This assay simultaneously detects five influenza virus subtypes, including the 2009 pandemic influenza A (H1N1), seasonal H1N1, H3N2, H5N1 and influenza B virus. The VereFlu™ assay was clinically validated in Singapore and compared against reference methods of real-time PCR, virus detection by immunofluorescence of cell cultures and sequencing. A sensitivity and specificity of 96.8% and 92.8%, respectively, was demonstrated for pandemic H1N1; 95.7% and 100%, respectively, for seasonal H1N1; 91.2% and 97.6%, respectively, for seasonal H3N2; 95.2% and 100%, respectively, for influenza B. Additional evaluations carried out at the World Health Organization (WHO) Collaborating Centre, Melbourne, Australia, confirmed that the test was able to reliably detect H5N1. This portable, fast time-to-answer (3 hours) device is particularly suited for diagnostic applications of detection, differentiation and identification of human influenza virus subtypes.
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Affiliation(s)
- Jeanette Teo
- Department of Laboratory Medicine, National University Hospital, Singapore, 119074 Singapore
| | - Patrizia Di Pietro
- CCI Group, Molecular Diagnostic Business Unit, Microfluidics Division, STMicroelectronics, Stradale Primosole 50, 95121 Catania, Italy
| | - Floriana San Biagio
- CCI Group, Molecular Diagnostic Business Unit, Microfluidics Division, STMicroelectronics, Stradale Primosole 50, 95121 Catania, Italy
| | - Monica Capozzoli
- CCI Group, Molecular Diagnostic Business Unit, Microfluidics Division, STMicroelectronics, Stradale Primosole 50, 95121 Catania, Italy
| | - Yi-Mo Deng
- WHO Collaborating Centre for Reference and Research on Influenza, 10 Wreckyn St, North Melbourne, VIC Australia
| | - Ian Barr
- WHO Collaborating Centre for Reference and Research on Influenza, 10 Wreckyn St, North Melbourne, VIC Australia
| | - Natalie Caldwell
- WHO Collaborating Centre for Reference and Research on Influenza, 10 Wreckyn St, North Melbourne, VIC Australia
| | - Kian-Leong Ong
- Veredus Laboratories Pte Ltd, 83 Science Park Drive #03-02A, The Curie, Singapore Science Park, Singapore, 118258 Singapore
| | - Mitsuharu Sato
- Veredus Laboratories Pte Ltd, 83 Science Park Drive #03-02A, The Curie, Singapore Science Park, Singapore, 118258 Singapore
| | - Rosemary Tan
- Veredus Laboratories Pte Ltd, 83 Science Park Drive #03-02A, The Curie, Singapore Science Park, Singapore, 118258 Singapore
| | - Raymond Lin
- Department of Laboratory Medicine, National University Hospital, Singapore, 119074 Singapore
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Furuse Y, Odagiri T, Okada T, Khandaker I, Shimabukuro K, Sawayama R, Suzuki A, Oshitani H. Differentiation of human influenza A viruses including the pandemic subtype H1N1/2009 by conventional multiplex PCR. J Virol Methods 2010; 168:94-7. [PMID: 20447424 DOI: 10.1016/j.jviromet.2010.04.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2010] [Revised: 04/23/2010] [Accepted: 04/27/2010] [Indexed: 11/28/2022]
Abstract
April 2009 witnessed the emergence of a novel H1N1 influenza A virus infecting the human population. Currently, pandemic and seasonal influenza viruses are co-circulating in human populations. Understanding the course of the emerging pandemic virus is important. It is still unknown how the novel virus co-circulates with or outcompetes seasonal viruses. Sustainable and detailed influenza surveillance is required throughout the world including developing countries. In the present study, a multiplex PCR using four primers was developed, which was designed to differentiate the pandemic H1N1 virus from the seasonal H1N1 and H3N2 viruses, to obtain amplicons of different sizes. Multiplex PCR analysis could clearly differentiate the three subtypes of human influenza A virus. This assay was performed using 206 clinical samples collected in 2009 in Japan. Between February and April, four samples were subtyped as seasonal H1N1 and four as seasonal H3N2. All samples collected after July were subtyped as pandemic H1N1. Currently, pandemic viruses seem to have replaced seasonal viruses almost completely in Japan. This is a highly sensitive method and its cost is low. Influenza surveillance using this assay would provide significant information on the epidemiology of both pandemic and seasonal influenza.
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Affiliation(s)
- Yuki Furuse
- Tohoku University Graduate School of Medicine, Department of Virology, 2-1 Seiryou-machi Aoba-ku Sendai 980-8575, Japan
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