CovidV1, Ncbi, Merge, bibRecord, 000757

An electrochemical immunosensor for the corona virus associated with the Middle East respiratory syndrome using an array of gold nanoparticle-modified carbon electrodes.

Identifieur interne : 000757 ( Ncbi/Merge ); précédent : 000756; suivant : 000758

An electrochemical immunosensor for the corona virus associated with the Middle East respiratory syndrome using an array of gold nanoparticle-modified carbon electrodes.

Auteurs : Laila Ali Layqah [Arabie saoudite] ; Shimaa Eissa [Arabie saoudite]

Source :

Mikrochimica acta [ 1436-5073 ] ; 2019.

RBID : pubmed:30847572

Descripteurs français

English descriptors

KwdEn :
- Antibodies, Viral (metabolism), Biosensing Techniques (methods), Coronavirus Infections (diagnosis), Electrochemical Techniques (methods), Electrodes, Ferrocyanides (chemistry), Gold (chemistry), Immunoassay (methods), Limit of Detection, Metal Nanoparticles (chemistry), Middle East Respiratory Syndrome Coronavirus (chemistry), Oxidation-Reduction, Particle Size, Sensitivity and Specificity, Surface Properties.
MESH :
- chemical , chemistry : Ferrocyanides, Gold.
- chemical , metabolism : Antibodies, Viral.
- chemistry : Metal Nanoparticles, Middle East Respiratory Syndrome Coronavirus.
- diagnosis : Coronavirus Infections.
- methods : Biosensing Techniques, Electrochemical Techniques, Immunoassay.
- Electrodes, Limit of Detection, Oxidation-Reduction, Particle Size, Sensitivity and Specificity, Surface Properties.

Abstract

The Middle East respiratory syndrome corona virus (MERS-CoV) is highly pathogenic. An immunosensor for the determination of MERS-CoV is described here. It is based on a competitive assay carried out on an array of carbon electrodes (DEP) modified with gold nanoparticles. Recombinant spike protein S1 was used as a biomarker for MERS CoV. The electrode array enables multiplexed detection of different CoVs. The biosensor is based on indirect competition between free virus in the sample and immobilized MERS-CoV protein for a fixed concentration of antibody added to the sample. Voltammetric response is detected by monitoring the change in the peak current (typically acquired at a working potential of -0.05 V vs. Ag/AgCl) after addition of different concentrations of antigen against MERS-CoV. Electrochemical measurements using ferrocyanide/ferricyanide as a probe were recorded using square wave voltammetry (SWV). Good linear response between the sensor response and the concentrations from 0.001 to 100 ng.mL^-1 and 0.01 to 10,000 ng.mL^-1 were observed for MERS-CoV and HCoV, respectively. The assay was performed in 20 min with detection limit as low as 0.4 and 1.0 pg.mL^-1 for HCoV and MERS-CoV, respectively. The method is highly selective over non-specific proteins such as Influenza A and B. The method is single-step, sensitive and accurate. It was successfully applied to spiked nasal samples. Graphical abstract An electrochemical immunoassay is described for the Middle East Respiratory Syndrome Corona Virus (MERS-CoV). The method is based on a competitive assay carried out on a carbon array electrodes (DEP) nanostructured with gold nanoparticles. The array electrodes enable the multiplexed detection of different types of Corona Virus.

DOI: 10.1007/s00604-019-3345-5
PubMed: 30847572

Links toward previous steps (curation, corpus...)

to stream PubMed, to step Corpus: 000600
to stream PubMed, to step Curation: 000600
to stream PubMed, to step Checkpoint: 000597

Links to Exploration step

pubmed:30847572

Le document en format XML

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<front><div type="abstract" xml:lang="en">The Middle East respiratory syndrome corona virus (MERS-CoV) is highly pathogenic. An immunosensor for the determination of MERS-CoV is described here. It is based on a competitive assay carried out on an array of carbon electrodes (DEP) modified with gold nanoparticles. Recombinant spike protein S1 was used as a biomarker for MERS CoV. The electrode array enables multiplexed detection of different CoVs. The biosensor is based on indirect competition between free virus in the sample and immobilized MERS-CoV protein for a fixed concentration of antibody added to the sample. Voltammetric response is detected by monitoring the change in the peak current (typically acquired at a working potential of -0.05 V vs. Ag/AgCl) after addition of different concentrations of antigen against MERS-CoV. Electrochemical measurements using ferrocyanide/ferricyanide as a probe were recorded using square wave voltammetry (SWV). Good linear response between the sensor response and the concentrations from 0.001 to 100 ng.mL<sup>-1</sup>
 and 0.01 to 10,000 ng.mL<sup>-1</sup>
 were observed for MERS-CoV and HCoV, respectively. The assay was performed in 20 min with detection limit as low as 0.4 and 1.0 pg.mL<sup>-1</sup>
 for HCoV and MERS-CoV, respectively. The method is highly selective over non-specific proteins such as Influenza A and B. The method is single-step, sensitive and accurate. It was successfully applied to spiked nasal samples. Graphical abstract An electrochemical immunoassay is described for the Middle East Respiratory Syndrome Corona Virus (MERS-CoV). The method is based on a competitive assay carried out on a carbon array electrodes (DEP) nanostructured with gold nanoparticles. The array electrodes enable the multiplexed detection of different types of Corona Virus.</div>
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 and 0.01 to 10,000 ng.mL<sup>-1</sup>
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 for HCoV and MERS-CoV, respectively. The method is highly selective over non-specific proteins such as Influenza A and B. The method is single-step, sensitive and accurate. It was successfully applied to spiked nasal samples. Graphical abstract An electrochemical immunoassay is described for the Middle East Respiratory Syndrome Corona Virus (MERS-CoV). The method is based on a competitive assay carried out on a carbon array electrodes (DEP) nanostructured with gold nanoparticles. The array electrodes enable the multiplexed detection of different types of Corona Virus.</AbstractText>
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<affiliations><list><country><li>Arabie saoudite</li>
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An electrochemical immunosensor for the corona virus associated with the Middle East respiratory syndrome using an array of gold nanoparticle-modified carbon electrodes.

An electrochemical immunosensor for the corona virus associated with the Middle East respiratory syndrome using an array of gold nanoparticle-modified carbon electrodes.

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