Rapid and specific DNA detection by magnetic field-enhanced agglutination assay.
Agglutination assay
Dengue virus
Magnetic nanoparticles
Molecular diagnostics
Journal
Talanta
ISSN: 1873-3573
Titre abrégé: Talanta
Pays: Netherlands
ID NLM: 2984816R
Informations de publication
Date de publication:
01 Nov 2020
01 Nov 2020
Historique:
received:
14
04
2020
revised:
23
06
2020
accepted:
25
06
2020
entrez:
5
9
2020
pubmed:
6
9
2020
medline:
15
5
2021
Statut:
ppublish
Résumé
The detection of DNA molecules by agglutination assays has suffered from a lack of specificity. The specificity can be improved by introducing a hybridization step with a specific probe. We developed a setting that captured biotinylated DNA targets between magnetic nanoparticles (MNPs) grafted with tetrathiolated probes and anti-biotin antibodies. The agglutination assay was enhanced using a series of magnetization cycles. This setting allowed to successfully detect a synthetic single stranded DNA with a sensitivity as low as 9 pM. We next adapted this setting to the detection of PCR products. We first developed an asymmetric pan-flavivirus amplification. Then, we demonstrated its ability to detect dengue virus with a limit of detection of 100 TCID
Identifiants
pubmed: 32887073
pii: S0039-9140(20)30635-4
doi: 10.1016/j.talanta.2020.121344
pii:
doi:
Substances chimiques
DNA Probes
0
DNA
9007-49-2
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
121344Informations de copyright
Copyright © 2020 The Author(s). Published by Elsevier B.V. All rights reserved.