Effective diagnosis of foot-and-mouth disease virus (FMDV) serotypes O and A based on optical and electrochemical dual-modal detection

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Title
Effective diagnosis of foot-and-mouth disease virus (FMDV) serotypes O and A based on optical and electrochemical dual-modal detection
Author(s)
Yun Jung Hwang; Kyung-Kwan Lee; Jong-Won Kim; K H Chung; Sang-Jick Kim; W S Yun; Chang-Soo Lee
Bibliographic Citation
Biomolecules, vol. 11, no. 6, pp. 841-841
Publication Year
2021
Abstract
Foot-and-mouth disease virus (FMDV) is a highly contagious disease that affects cloven-hoofed animals. The traditional diagnostic methods for FMDV have several drawbacks such as cross-reactivity, low sensitivity, and low selectivity. To overcome these drawbacks, we present an optical and electrochemical dual-modal approach for the specific detection of FMDV serotypes O and A by utilizing a magnetic nanoparticle labeling technique with resorufin β-d-glucopyranoside (res-β-glc) and β-glucosidase (β-glc), without the use of typical lateral flow assay or polymerase chain reaction. FMDV serotypes O and A were reacted with pan-FMDV antibodies that recognize all seven FMDV serotypes (O, A, C, Asia 1, SAT 1, SAT 2, and SAT 3). The antigen-antibody complex was then immobilized on magnetic nanoparticles and reacted with β-glc-conjugated FMDV type O or type A antibodies. Subsequently, the addition of res-β-glc resulted in the release of fluorescent resorufin and glucose owing to catalytic hydrolysis by β-glc. The detection limit of fluorescent signals using a fluorescence spectrophotometer was estimated to be log(6.7) and log(5.9) copies/mL for FMDV type O and A, respectively, while that of electrochemical signals using a glucometer was estimated to be log(6.9) and log(6.1) copies/mL for FMDV type O and A, respectively. Compared with a commercially available lateral flow assay diagnostic kit for immunochromatographic detection of FMDV type O and A, this dual-modal detection platform offers approximately four-fold greater sensitivity. This highly sensitive and accurate dual-modal detection method can be used for effective disease diagnosis and treatment, and will find application in the early-stage diagnosis of viral diseases and next-generation diagnostic platforms.
Keyword
Dual-modalityOpticalElectrochemicalFoot-and-mouth disease virus (FMDV)
ISSN
2218-273X
Publisher
MDPI
DOI
http://dx.doi.org/10.3390/biom11060841
Type
Article
Appears in Collections:
Division of Biomaterials Research > Synthetic Biology and Bioengineering Research Center > 1. Journal Articles
Division of Biomaterials Research > Bionanotechnology Research Center > 1. Journal Articles
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