Imperial College London

Professor Tony Cass

Faculty of Natural SciencesDepartment of Chemistry

Professor of Chemistry



+44 (0)20 7594 5195t.cass




301KMolecular Sciences Research HubWhite City Campus






BibTex format

author = {Le, T and Chang, P and Benton, DJ and McCauley, JW and Iqbal, M and Cass, AEG},
doi = {10.1021/acs.analchem.7b01149},
journal = {Analytical Chemistry},
pages = {6781--6786},
title = {Dual recognition element lateral flow assay (DRELFA) towards multiplex strain-specific influenza virus detection},
url = {},
volume = {89},
year = {2017}

RIS format (EndNote, RefMan)

AB - 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.
AU - Le,T
AU - Chang,P
AU - Benton,DJ
AU - McCauley,JW
AU - Iqbal,M
AU - Cass,AEG
DO - 10.1021/acs.analchem.7b01149
EP - 6786
PY - 2017///
SN - 1520-6882
SP - 6781
TI - Dual recognition element lateral flow assay (DRELFA) towards multiplex strain-specific influenza virus detection
T2 - Analytical Chemistry
UR -
UR -
VL - 89
ER -