Optimized Sindbis Virus RNA Detection Using Novel RT-qPCR: Isolation and Characterization of Sindbis Virus from a...

Area of Science:

• Virology
• Infectious Diseases
• Molecular Diagnostics

Background:

• Sindbis virus (SINV) causes Pogosta disease, characterized by low and short-lived viremia in patients.
• Detecting and isolating SINV from human blood samples is challenging due to limited viral RNA.
• Existing methods for SINV detection may lack the required sensitivity for clinical samples.

Purpose of the Study:

• To develop and validate a highly sensitive and specific SINV RNA detection method.
• To optimize the detection of Sindbis virus in patient serum samples.
• To improve the identification of viremic individuals for further etiological studies.

Main Methods:

• Development and validation of a novel SINV reverse transcription quantitative PCR (RT-qPCR) assay.
• Screening of 882 serum samples from patients suspected of Pogosta disease.
• Virus isolation and whole-genome sequencing of a positive SINV RNA sample.

Main Results:

• The developed SINV-RT-qPCR method demonstrated superior sensitivity compared to previous techniques.
• One serum sample tested positive for SINV RNA out of 882 screened.
• Whole-genome sequencing revealed the isolated SINV strain is genetically similar to previously identified strains in Northern Europe and Germany.

Conclusions:

• The optimized SINV-RT-qPCR assay is an effective tool for detecting viremia in Pogosta disease patients.
• This enhanced diagnostic method facilitates the identification of SINV-infected individuals.
• The findings support the utility of the new assay for epidemiological surveillance and further research into SINV.