Development of a Sensitive Detection Method for Alphaviruses and Its Use as a Virus Neutralization Assay

Author:

Schmidt ChristinORCID,Perkovic Mario,Schnierle Barbara S.

Abstract

Alphaviruses have a single-stranded, positive-sense RNA genome that contains two open reading frames encoding either the non-structural or the structural genes. Upon infection, the genomic RNA is translated into the non-structural proteins (nsPs). NsPs are required for viral RNA replication and transcription driven from the subgenomic promoter (sgP). Transfection of an RNA encoding the luciferase gene under the control of the sgP into cells enabled the detection of replication-competent chikungunya virus (CHIKV) or Mayaro virus (MAYV) with high sensitivity as a function of the induced luciferase activity. This assay principle was additionally used to analyze virus-neutralizing antibodies in sera and might be an alternative to standard virus neutralization assays based on virus titration or the use of genetically modified tagged viruses.

Funder

LOEWE state of Hessen, Germany

Publisher

MDPI AG

Subject

Virology,Infectious Diseases

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