Development and validation of a rapid five-minute nucleic acid extraction method for respiratory viruses

Area of Science:

• Molecular Biology
• Virology
• Diagnostic Development

Background:

• Respiratory viruses pose significant health risks, necessitating efficient nucleic acid detection for disease management.
• Current viral nucleic acid extraction methods are often time-consuming and yield variable results, impacting diagnostic accuracy.
• There is a need for improved methods that are faster, simpler, and yield high-quality nucleic acid for sensitive detection.

Purpose of the Study:

• To develop and validate a novel, rapid method for extracting nucleic acid from respiratory viruses.
• To reduce extraction time and operational complexity while ensuring high purity and yield of viral nucleic acid.
• To establish a foundation for expedited molecular diagnosis of respiratory viral infections.

Main Methods:

• Optimization of a novel lysis and washing solution (50% glycerin, 50% ethanol) for respiratory viral nucleic acid extraction.
• Validation of the five-minute nucleic acid extraction (FME) method against magnetic bead, spin column, and precipitation techniques.
• Clinical evaluation of the FME method using respiratory specimens from patients suspected of influenza A virus infection.

Main Results:

• The FME method, utilizing a glycerin-ethanol solution, achieved comparable efficacy to conventional methods in a single, abbreviated cycle.
• Compared to traditional methods, FME yielded superior RNA concentrations and purity for respiratory viruses.
• Clinical testing showed the FME method had a 95.43% coincidence rate and a kappa statistic of 0.901 when compared to the standard magnetic bead method for influenza A virus detection.

Conclusions:

• The developed five-minute nucleic acid extraction (FME) method provides a rapid and efficient means for isolating nucleic acid from respiratory samples.
• This novel method simplifies operational steps and enhances nucleic acid quality, supporting faster molecular diagnostics.
• The FME method lays the groundwork for expedited molecular diagnosis, improving response to respiratory viral outbreaks.