VPrimer: A Method of Designing and Updating Primer and Probe With High Variant Coverage for RNA Virus Detection

Area of Science:

• Virology
• Bioinformatics
• Molecular Biology

Background:

• RNA viruses cause fatal infectious diseases globally, necessitating accurate detection methods.
• Reverse transcription-polymerase chain reaction (RT-PCR) is crucial for virus detection, relying on specific primers and probes.
• Existing primer design methods are often host-specific and struggle with viral variants.

Purpose of the Study:

• To introduce VPrimer, a novel computational method for designing high-quality primer-probe sets for RNA virus detection.
• To develop a tool that addresses the challenge of viral sequence variability and host/non-target specificity.

Main Methods:

• VPrimer designs primer-probe sets by analyzing viral genomes and considering sequence variants.
• The method ensures coverage of >95% of target virus variants while excluding host and other viral sequences.
• VPrimer incrementally updates primer-probe sets against the latest reported viral variants.

Main Results:

• VPrimer identified over 381 million primer-probe sets for 3,104 RNA viruses.
• Multiplex PCR assays using VPrimer-suggested sets achieved 100% variant coverage.
• The method effectively handles the rapid evolution of viral genomes.

Conclusions:

• VPrimer offers an efficient and accurate solution for designing RNA virus-specific primers and probes.
• This tool is vital for robust diagnostic assays, especially in the face of emerging infectious diseases.
• VPrimer's ability to adapt to viral evolution enhances its utility for ongoing surveillance and detection.