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Ultrasensitive detection of influenza viruses with a glycan-based impedimetric biosensor
A. Hushegyi, D. Pihíková, T. Bertok, V. Adam, R. Kizek, J. Tkac,
Language English Country England, Great Britain
Document type Evaluation Study, Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Biosensing Techniques methods MeSH
- Influenza, Human diagnosis virology MeSH
- Dielectric Spectroscopy methods MeSH
- Humans MeSH
- Limit of Detection MeSH
- Polysaccharides chemistry MeSH
- Influenza A Virus, H3N2 Subtype isolation & purification MeSH
- Influenza A Virus, H7N7 Subtype isolation & purification MeSH
- Check Tag
- Humans MeSH
- Publication type
- Journal Article MeSH
- Evaluation Study MeSH
- Research Support, Non-U.S. Gov't MeSH
An ultrasensitive impedimetric glycan-based biosensor for reliable and selective detection of inactivated, but intact influenza viruses H3N2 was developed. Such glycan-based approach has a distinct advantage over antibody-based detection of influenza viruses since glycans are natural viral receptors with a possibility to selectively distinguish between potentially pathogenic influenza subtypes by the glycan-based biosensors. Build-up of the biosensor was carefully optimized with atomic force microscopy applied for visualization of the biosensor surface after binding of viruses with the topology of an individual viral particle H3N2 analyzed. The glycan biosensor could detect a glycan binding lectin with a limit of detection (LOD) of 5 aM. The biosensor was finally applied for analysis of influenza viruses H3N2 with LOD of 13 viral particles in 1 μl, what is the lowest LOD for analysis of influenza viral particles by the glycan-based device achieved so far. The biosensor could detect H3N2 viruses selectively with a sensitivity ratio of 30 over influenza viruses H7N7. The impedimetric biosensor presented here is the most sensitive glycan-based device for detection of influenza viruses and among the most sensitive antibody or aptamer based biosensor devices.
References provided by Crossref.org
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