Rapid and sensitive lateral flow biosensor for the detection of GII human norovirus based on immunofluorescent nanomagnetic microspheres

© 2024 Wiley Periodicals LLC..

Human norovirus (HuNoV) is the most predominant viral agents of acute gastroenteritis. Point-of-care testing (POCT) based on lateral flow immunochromatography (LIFC) has become an important tool for rapid diagnosis of HuNoVs. However, low sensitivity and lack of quantitation are the bottlenecks of traditional LIFC. Thus, we established a rapid and accurate technique that combined immunomagnetic enrichment (IM) with LFIC to identify GII HuNoVs in fecal specimens. Before preparing immunofluorescent nanomagnetic microspheres and achieving the effect of HuNoV enrichment in IM and fluorescent signal in LFIC, amino-functionalized magnetic beads (MBs) and carboxylated quantum dots (QDs) were coupled at a mass ratio of 4:10. Anti-HuNoV monoclonal antibody was then conjugated with QDs-MB. The limit of detection was 1.56 × 104  copies/mL, and the quantitative detection range was 1.56 × 104  copies/mL-1 × 106  copies/mL under optimal circumstances. The common HuNoV genotypes GII.2, GII.3, GII.4, and GII.17 can be detected, there was no cross-reaction with various enteric viruses, including rotavirus, astrovirus, enterovirus, and sapovirus. A comparison between IM-LFIC and RT-qPCR for the detection of 87 fecal specimens showed a high level of agreement (kappa = 0.799). This suggested that the method is rapid and sensitive, making it a promising option for point-of-care testing in the future.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:96

Enthalten in:

Journal of medical virology - 96(2024), 3 vom: 14. März, Seite e29487

Sprache:

Englisch

Beteiligte Personen:

Gao, Junshan [VerfasserIn]
Xue, Liang [VerfasserIn]
Li, Yijing [VerfasserIn]
Cai, Weicheng [VerfasserIn]
Miao, Shuidi [VerfasserIn]
Meng, Luobing [VerfasserIn]
Ren, Shaolei [VerfasserIn]
Zhang, Jumei [VerfasserIn]
Wang, Juan [VerfasserIn]
Wu, Shi [VerfasserIn]
Ye, Qinghua [VerfasserIn]
Chen, Ling [VerfasserIn]
Gu, Qihui [VerfasserIn]
Wu, Qingping [VerfasserIn]

Links:

Volltext

Themen:

Immunomagnetic enrichment
Journal Article
Lateral flow immunochromatography
Magnetic bead
Monoclonal antibody
Norovirus
Quantum dot

Anmerkungen:

Date Completed 15.03.2024

Date Revised 15.03.2024

published: Print

Citation Status MEDLINE

doi:

10.1002/jmv.29487

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369726030