Development of high-throughput liquid chips for respiratory virus detection

Area of Science:

• Medical Diagnostics
• Molecular Biology
• Virology

Background:

• Clinical diagnosis of viral respiratory infections is often non-specific.
• There is a need for rapid, high-throughput laboratory methods for detecting major respiratory viruses.

Purpose of the Study:

• To develop and evaluate two multiplex liquid chip assay panels for the simultaneous detection of influenza viruses and other common respiratory viruses.
• To assess the analytical sensitivity, specificity, and diagnostic performance of these novel panels.

Main Methods:

• Development of two xMAP-based Luminex liquid chip panels using target-enriched multiplexed RT-PCR and hybridization.
• Influenza Panel detects 5 types/subtypes; Respiratory Panel identifies 14 major respiratory viruses, including emerging pathogens.
• Analytical sensitivity and specificity were determined, followed by evaluation using clinical samples (throat swabs and nasopharyngeal aspirates).

Main Results:

• Influenza Panel demonstrated high analytical sensitivity (4-200 copies vRNA/µL).
• Respiratory Panel showed high sensitivity (10-400 copies vRNA/µL) for most targets.
• High diagnostic sensitivity (50.0%-100.0%) and specificity (96.2%-100.0%) were achieved, with no observed cross-reactivity.

Conclusions:

• Two xMAP-based liquid chip assay panels can simultaneously detect 19 different respiratory viruses in a single reaction within 6 hours.
• These panels represent potentially rapid, sensitive, specific, and high-throughput diagnostic tools for key viral respiratory pathogens.