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Proof-of-Concept Rapid Diagnostic Test for Onchocerciasis: Exploring Peptide Biomarkers and the Use of Gold Nanoshells as Reporter Nanoparticles.

Abstract：

:Three O. volvulus immunogenic peptide sequences recently discovered by peptide microarray were adapted to a lateral flow assay (LFA). The LFA employs gold nanoshells as novel high-contrast reporter nanoparticles and detects a serological response against the 3 peptides, found in OvOC9384, OvOC198, and OvOC5528, respectively. When tested on 118 sera from O. volvulus infected patients and 208 control sera, the LFA was 90%, 63%, and 98% sensitive for each peptide, respectively, and 99-100% specific vs samples from healthy volunteers. Samples of other filarial infections cross-reacted by 7-24%. The sensitivity, specificity, and cross-reactivity values matched those obtained by ELISA with the same sample set. While the exact choice of peptide(s) will require fine-tuning, this work establishes that O. volvulus peptides identified by peptide microarray can be translated into an antibody-based LFA and that gold nanoshells provide the same sensitivity, specificity, and cross-reactivity as the corresponding ELISA assays.

journal_name

ACS Infect Dis

journal_title

ACS infectious diseases

authors

Gonzalez-Moa MJ,Van Dorst B,Lagatie O,Verheyen A,Stuyver L,Biamonte MA

doi

10.1021/acsinfecdis.8b00031

subject

Has Abstract

pub_date

2018-06-08 00:00:00

pages

912-917

issue

6

issn

2373-8227

journal_volume

4

pub_type

杂志文章

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