Composite Peptide-Agarose Hydrogels for Robust and High-Sensitivity 3D Immunoassays.
ACS Appl Mater Interfaces
; 14(4): 4811-4822, 2022 Feb 02.
Artigo
em Inglês
| MEDLINE | ID: covidwho-1641826
ABSTRACT
Canonical immunoassays rely on highly sensitive and specific capturing of circulating biomarkers by interacting biomolecular baits. In this frame, bioprobe immobilization in spatially discrete three-dimensional (3D) spots onto analytical surfaces by hydrogel encapsulation was shown to provide relevant advantages over conventional two-dimensional (2D) platforms. Yet, the broad application of 3D systems is still hampered by hurdles in matching their straightforward fabrication with optimal functional properties. Herein, we report on a composite hydrogel obtained by combining a self-assembling peptide (namely, Q3 peptide) with low-temperature gelling agarose that is proved to have simple and robust application in the fabrication of microdroplet arrays, overcoming hurdles and limitations commonly associated with 3D hydrogel assays. We demonstrate the real-case scenario feasibility of our 3D system in the profiling of Covid-19 patients' serum IgG immunoreactivity, which showed remarkably improved signal-to-noise ratio over canonical assays in the 2D format and exquisite specificity. Overall, the new two-component hydrogel widens the perspectives of hydrogel-based arrays and represents a step forward towards their routine use in analytical practices.
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Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
MEDLINE
Assunto principal:
Imunoglobulina G
/
Imunoensaio
/
SARS-CoV-2
/
COVID-19
Tipo de estudo:
Estudo diagnóstico
/
Estudo prognóstico
Limite:
Humanos
Idioma:
Inglês
Revista:
ACS Appl Mater Interfaces
Assunto da revista:
Biotecnologia
/
Engenharia Biomédica
Ano de publicação:
2022
Tipo de documento:
Artigo
País de afiliação:
Acsami.1c18466
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