Immunostained plaque assay for detection and titration of rabies virus infectivity.

Abstract:

:The fluorescent antibody test (FAT) is the most commonly used method for detection of the rabies virus (RV). The plaque assay can only be applied to fixed RVs, and cannot be used for street RVs. In this study, plaque formation allowing the determination of both fixed and street RVs was achieved using the immune plaque assay. The immune plaque assay carried out using both fixed and street RVs showed the formation of clear and countable plaques after immunostaining with anti-RV P monoclonal antibody and HRP-conjugated anti-mouse IgG. Plaque size increased with incubation time, and the plaque morphology differed according to viral strain. Fixed RVs had the dot-shaped regular plaque morphology and street RVs had the small irregular-shape plaque morphology. In addition, no significant differences were observed between the growth kinetics of the KGH strain when the virus was titrated using the FAT and the immune plaque assay. It allowed the successful detection and quantification of both street and fixed RVs through the production of clear, countable plaques, making it easy to obtain objective results. The assay is an applicable tool for the detection of RVs in various investigations, including virus neutralizing antibody testing, cell-to-cell spread, and viral drug sensitivity testing.

journal_name

J Virol Methods

authors

Park JS,Um J,Choi YK,Lee YS,Ju YR,Kim SY

doi

10.1016/j.jviromet.2015.10.010

subject

Has Abstract

pub_date

2016-02-01 00:00:00

pages

21-5

eissn

0166-0934

issn

1879-0984

pii

S0166-0934(15)00353-5

journal_volume

228

pub_type

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