Label-free, electrical detection of the SARS virus N-protein with nanowire biosensors utilizing antibody mimics as capture probes.
Identifieur interne : 002B33 ( Main/Merge ); précédent : 002B32; suivant : 002B34Label-free, electrical detection of the SARS virus N-protein with nanowire biosensors utilizing antibody mimics as capture probes.
Auteurs : Fumiaki N. Ishikawa [États-Unis] ; Hsiao-Kang Chang ; Marco Curreli ; Hsiang-I Liao ; C Anders Olson ; Po-Chiang Chen ; Rui Zhang ; Richard W. Roberts ; Ren Sun ; Richard J. Cote ; Mark E. Thompson ; Chongwu ZhouSource :
- ACS nano [ 1936-086X ] ; 2009.
Descripteurs français
- KwdFr :
- Anticorps antiviraux (), Coloration et marquage, Conception d'appareillage, Conformation moléculaire, Fibronectines (immunologie), Indium (), Matériaux biomimétiques (), Nanostructures (), Nanostructures (ultrastructure), Nanotechnologie (instrumentation), Propriétés de surface, Structures macromoléculaires (), Taille de particule, Techniques de biocapteur (instrumentation), Virus du SRAS (immunologie), Virus du SRAS (isolement et purification), Électrochimie (instrumentation).
- MESH :
- immunologie : Fibronectines, Virus du SRAS.
- isolement et purification : Virus du SRAS.
- Anticorps antiviraux, Coloration et marquage, Conception d'appareillage, Conformation moléculaire, Indium, Matériaux biomimétiques, Nanostructures, Nanotechnologie, Propriétés de surface, Structures macromoléculaires, Taille de particule, Techniques de biocapteur, Électrochimie.
English descriptors
- KwdEn :
- Antibodies, Viral (chemistry), Biomimetic Materials (chemistry), Biosensing Techniques (instrumentation), Electrochemistry (instrumentation), Equipment Design, Fibronectins (immunology), Indium (chemistry), Macromolecular Substances (chemistry), Molecular Conformation, Nanostructures (chemistry), Nanostructures (ultrastructure), Nanotechnology (instrumentation), Particle Size, SARS Virus (immunology), SARS Virus (isolation & purification), Staining and Labeling, Surface Properties.
- MESH :
- chemical , chemistry : Antibodies, Viral, Indium, Macromolecular Substances.
- chemistry : Biomimetic Materials, Nanostructures.
- chemical , immunology : Fibronectins, SARS Virus.
- instrumentation : Biosensing Techniques, Electrochemistry, Nanotechnology.
- isolation & purification : SARS Virus.
- ultrastructure : Nanostructures.
- Equipment Design, Molecular Conformation, Particle Size, Staining and Labeling, Surface Properties.
Abstract
Antibody mimic proteins (AMPs) are polypeptides that bind to their target analytes with high affinity and specificity, just like conventional antibodies, but are much smaller in size (2-5 nm, less than 10 kDa). In this report, we describe the first application of AMP in the field of nanobiosensors. In(2)O(3) nanowire based biosensors have been configured with an AMP (Fibronectin, Fn) to detect nucleocapsid (N) protein, a biomarker for severe acute respiratory syndrome (SARS). Using these devices, N protein was detected at subnanomolar concentration in the presence of 44 microM bovine serum albumin as a background. Furthermore, the binding constant of the AMP to Fn was determined from the concentration dependence of the response of our biosensors.
DOI: 10.1021/nn900086c
PubMed: 19422193
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pubmed:19422193Le document en format XML
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<term>Biosensing Techniques (instrumentation)</term>
<term>Electrochemistry (instrumentation)</term>
<term>Equipment Design</term>
<term>Fibronectins (immunology)</term>
<term>Indium (chemistry)</term>
<term>Macromolecular Substances (chemistry)</term>
<term>Molecular Conformation</term>
<term>Nanostructures (chemistry)</term>
<term>Nanostructures (ultrastructure)</term>
<term>Nanotechnology (instrumentation)</term>
<term>Particle Size</term>
<term>SARS Virus (immunology)</term>
<term>SARS Virus (isolation & purification)</term>
<term>Staining and Labeling</term>
<term>Surface Properties</term>
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<term>Coloration et marquage</term>
<term>Conception d'appareillage</term>
<term>Conformation moléculaire</term>
<term>Fibronectines (immunologie)</term>
<term>Indium ()</term>
<term>Matériaux biomimétiques ()</term>
<term>Nanostructures ()</term>
<term>Nanostructures (ultrastructure)</term>
<term>Nanotechnologie (instrumentation)</term>
<term>Propriétés de surface</term>
<term>Structures macromoléculaires ()</term>
<term>Taille de particule</term>
<term>Techniques de biocapteur (instrumentation)</term>
<term>Virus du SRAS (immunologie)</term>
<term>Virus du SRAS (isolement et purification)</term>
<term>Électrochimie (instrumentation)</term>
</keywords>
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<term>Indium</term>
<term>Macromolecular Substances</term>
</keywords>
<keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Biomimetic Materials</term>
<term>Nanostructures</term>
</keywords>
<keywords scheme="MESH" qualifier="immunologie" xml:lang="fr"><term>Fibronectines</term>
<term>Virus du SRAS</term>
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<term>SARS Virus</term>
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<term>Electrochemistry</term>
<term>Nanotechnology</term>
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<term>Molecular Conformation</term>
<term>Particle Size</term>
<term>Staining and Labeling</term>
<term>Surface Properties</term>
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<term>Coloration et marquage</term>
<term>Conception d'appareillage</term>
<term>Conformation moléculaire</term>
<term>Indium</term>
<term>Matériaux biomimétiques</term>
<term>Nanostructures</term>
<term>Nanotechnologie</term>
<term>Propriétés de surface</term>
<term>Structures macromoléculaires</term>
<term>Taille de particule</term>
<term>Techniques de biocapteur</term>
<term>Électrochimie</term>
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<front><div type="abstract" xml:lang="en">Antibody mimic proteins (AMPs) are polypeptides that bind to their target analytes with high affinity and specificity, just like conventional antibodies, but are much smaller in size (2-5 nm, less than 10 kDa). In this report, we describe the first application of AMP in the field of nanobiosensors. In(2)O(3) nanowire based biosensors have been configured with an AMP (Fibronectin, Fn) to detect nucleocapsid (N) protein, a biomarker for severe acute respiratory syndrome (SARS). Using these devices, N protein was detected at subnanomolar concentration in the presence of 44 microM bovine serum albumin as a background. Furthermore, the binding constant of the AMP to Fn was determined from the concentration dependence of the response of our biosensors.</div>
</front>
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