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Qavi AJ, Jiang Q, Aman MJ, Vu H, Zetlin L, Dye JM, Froude JW, Leung DW, Holtsberg F, Crick SL, Amarasinghe GK. A Flexible, Quantitative Plasmonic-Fluor Lateral Flow Assay for the Rapid Detection of Orthoebolavirus zairense and Orthoebolavirus sudanense. ACS Infect Dis 2024; 10:57-63. [PMID: 38048277 PMCID: PMC10788868 DOI: 10.1021/acsinfecdis.3c00423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 12/06/2023]
Abstract
Filoviruses comprise a family of single-stranded, negative-sense RNA viruses with a significant impact on human health. Given the risk for disease outbreaks, as highlighted by the recent outbreaks across Africa, there is an unmet need for flexible diagnostic technologies that can be deployed in resource-limited settings. Herein, we highlight the use of plasmonic-fluor lateral flow assays (PF-LFA) for the rapid, quantitative detection of an Ebolavirus-secreted glycoprotein, a marker for infection. Plasmonic fluors are a class of ultrabright reporter molecules that combine engineered nanorods with conventional fluorophores, resulting in improved analytical sensitivity. We have developed a PF-LFA for Orthoebolavirus zairense (EBOV) and Orthoebolavirus sudanense (SUDV) that provides estimated limits of detection as low as 0.446 and 0.641 ng/mL, respectively. Furthermore, our assay highlights a high degree of specificity between the two viral species while also maintaining a turnaround time as short as 30 min. To highlight the utility of our PF-LFA, we demonstrate the detection of EBOV infection in non-human primates. Our PF-LFA represents an enormous step forward in the development of a robust, field-deployable assay for filoviruses.
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Affiliation(s)
- Abraham J. Qavi
- Department
of Pathology and Laboratory Medicine, University
of California, Irvine, Irvine, California 92697, United States
| | - Qisheng Jiang
- Auragent
Bioscience, St. Louis, Missouri 63108, United States
| | - M. Javad Aman
- Integrated
Biotherapeutics, Rockville, Maryland 20850, United States
| | - Hong Vu
- Integrated
Biotherapeutics, Rockville, Maryland 20850, United States
| | - Larry Zetlin
- Mapp
Biopharmaceutical, Inc., San Diego, California 92121, United States
| | - John M. Dye
- United
States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland 21702, United States
| | - Jeffrey W. Froude
- United
States
Army Nuclear and Countering Weapons of Mass Destruction Agency, Fort Belvoir, Virginia 22060, United States
| | - Daisy W. Leung
- Department
of Medicine, Washington University School
of Medicine, St. Louis, Missouri 63110, United States
| | | | - Scott L. Crick
- Auragent
Bioscience, St. Louis, Missouri 63108, United States
| | - Gaya K. Amarasinghe
- Department
of Pathology & Immunology, Washington
University School of Medicine, St. Louis, Missouri 63110, United States
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