Dual recognition element lateral flow assay (DRELFA) towards multiplex strain-specific influenza virus detection
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Published version
Supporting information
Author(s)
Type
Journal Article
Abstract
Different influenza virus strains have caused a number of recent outbreaks killing scores of people and causing significant losses in animal farming. Simple, rapid, sensitive, and specific detection of particular strains, such as a pandemic strain versus a previous seasonal influenza, plays a crucial role in the monitoring, controlling, and management of outbreaks. In this paper we describe a dual recognition element lateral flow assay (DRELFA) which pairs a nucleic acid aptamer with an antibody for use as a point-of-care platform which can detect particular strains of interest. The combination is used to overcome the individual limitations of antibodies’ cross-reactivity and aptamers’ slow binding kinetics. In the detection of influenza viruses, we show that DRELFA can discriminate a particular virus strain against others of the same subtype or common respiratory diseases while still exhibiting fast binding kinetic of the antibody-based lateral flow assay (LFA). The improvement in specificity that DRELFA exhibits is an advantage over the currently available antibody-based LFA systems for influenza viruses, which offer discrimination between influenza virus types and subtypes. Using quantitative real-time PCR (qRT-PCR), it showed that the DRELFA is very effective in localizing the analyte to the test line (consistently over 90%) and this is crucial for the sensitivity of the device. In addition, color intensities of the test lines showed a good correlation between the DRELFA and the qRT-PCR over a 50-fold concentration range. Finally, lateral flow strips with a streptavidin capture test line and an anti-antibody control line are universally applicable to specific detection of a wide range of different analytes.
Date Issued
2017-05-30
Date Acceptance
2017-05-30
Citation
Analytical Chemistry, 2017, 89 (12), pp.6781-6786
ISSN
1520-6882
Publisher
American Chemical Society
Start Page
6781
End Page
6786
Journal / Book Title
Analytical Chemistry
Volume
89
Issue
12
Copyright Statement
© 2017 American Chemical Society. ACS AuthorChoice - This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Sponsor
Biotechnology and Biological Sciences Research Cou
Grant Number
PON 4090041903
Subjects
Science & Technology
Physical Sciences
Chemistry, Analytical
Chemistry
A VIRUS
PANDEMIC H1N1
VIRAL LOADS
APTAMER
HEMAGGLUTININ
RNA
ANTIBODIES
IMMUNOASSAY
BIND
H5N1
Analytical Chemistry
0301 Analytical Chemistry
0904 Chemical Engineering
0399 Other Chemical Sciences
Publication Status
Published