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A high-throughput and multiplex microsphere immunoassay based on non-structural protein 1 can discriminate three flavivirus infections
Univ Hawaii Manoa, HI 96822 USA.
Univ Hawaii Manoa, HI 96822 USA.
Kaohsiung Med Univ, Taiwan.
Linköping University, Faculty of Medicine and Health Sciences.
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2019 (English)In: PLoS Neglected Tropical Diseases, ISSN 1935-2727, E-ISSN 1935-2735, Vol. 13, no 8, article id e0007649Article in journal (Refereed) Published
Abstract [en]

The explosive spread of Zika virus (ZIKV) and associated complications in flavivirus-endemic regions underscore the need for sensitive and specific serodiagnostic tests to distinguish ZIKV, dengue virus (DENV) and other flavivirus infections. Compared with traditional envelope protein-based assays, several nonstructural protein 1 (NS1)-based assays showed improved specificity, however, none can detect and discriminate three flaviviruses in a single assay. Moreover, secondary DENV infection and ZIKV infection with previous DENV infection, both common in endemic regions, cannot be discriminated. In this study, we developed a high-throughput and multiplex IgG microsphere immunoassay (MIA) using the NS1 proteins of DENV1-DENV4, ZIKV and West Nile virus (WNV) to test samples from reverse-transcription-polymerase-chain reaction-confirmed cases, including primary DENV1, DENV2, DENV3, WNV and ZIKV infections, secondary DENV infection, and ZIKV infection with previous DENV infection. Combination of four DENV NS1 IgG MIAs revealed a sensitivity of 94.3% and specificity of 97.2% to detect DENV infection. The ZIKV and WNV NS1 IgG MIAs had a sensitivity/specificity of 100%/87.9% and 86.1%/78.4%, respectively. A positive correlation was found between the readouts of enzyme-linked immunosorbent assay and MIA for different NS1 tested. Based on the ratio of relative median fluorescence intensity of ZIKV NS1 to DENV1 NS1, the IgG MIA can distinguish ZIKV infection with previous DENV infection and secondary DENV infection with a sensitivity of 88.9-90.0% and specificity of 91.7-100.0%. The multiplex and high-throughput assay could be applied to serodiagnosis and serosurveillance of DENV, ZIKV and WNV infections in endemic regions.

Place, publisher, year, edition, pages
PUBLIC LIBRARY SCIENCE , 2019. Vol. 13, no 8, article id e0007649
National Category
Infectious Medicine
Identifiers
URN: urn:nbn:se:liu:diva-161635DOI: 10.1371/journal.pntd.0007649ISI: 000490919400053PubMedID: 31442225OAI: oai:DiVA.org:liu-161635DiVA, id: diva2:1367873
Note

Funding Agencies|National Institute of Allergy and Infectious Diseases, NIHUnited States Department of Health & Human ServicesNational Institutes of Health (NIH) - USANIH National Institute of Allergy & Infectious Diseases (NIAID) [R01AI110769-01, R21AI135292-01A1]; National Institute of General Medical Sciences, NIHUnited States Department of Health & Human ServicesNational Institutes of Health (NIH) - USANIH National Institute of General Medical Sciences (NIGMS) [P30GM114737]; Ministry of Health and WelfareMinistry of Health, Labour and Welfare, Japan [MOHW108-TDU-B-212-133006]; National Health Research Institute, TaiwanNational Health Research Institutes - Taiwan [NHRI-MR-107-PP-38, NHRI-108A1-MRCO-0419191]

Available from: 2019-11-05 Created: 2019-11-05 Last updated: 2019-11-05

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CiteExportLink to record
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