A fully automated microfluidic PCR-array system for rapid detection of multiple respiratory tract infection pathogens

Area of Science:

• Microfluidics
• Molecular Diagnostics
• Infectious Disease Research

Background:

• Accurate identification of respiratory pathogens is crucial for effective clinical treatment and controlling transmission.
• Existing methods can be time-consuming and require complex laboratory setups.
• There is a need for rapid, integrated diagnostic solutions for respiratory tract infections.

Purpose of the Study:

• To develop and evaluate a microfluidic chip-based system, Onestart, for the rapid and comprehensive detection of respiratory pathogens.
• To assess the performance characteristics of the Onestart system, including speed, sensitivity, specificity, and reproducibility.

Main Methods:

• Development of a fully integrated microfluidic chip system (Onestart) incorporating sample lysis, nucleic acid extraction/purification, and real-time PCR.
• Sequential implementation of all analytical steps on a single chip.
• Determination of the lower limit-of-detection (LOD), inter-batch and intra-batch variations, and specificity using reference samples.

Main Results:

• The Onestart system detected 21 respiratory pathogens in a fully integrated manner within 1.5 hours.
• The lower limit-of-detection (LOD) was 1.0 × 10^3 copies·mL^-1.
• High specificity (100%) and consistent results with real-time PCR were observed for clinical samples, with low inter-batch (0.08%-0.69%) and intra-batch (0.9%-2.66%) variations.

Conclusions:

• The Onestart system provides a rapid, sensitive, and specific solution for identifying respiratory tract infection pathogens.
• Its integrated, ready-to-use format facilitates timely clinical management and effective prevention of pathogen transmission.
• This microfluidic chip-based approach represents a significant advancement in point-of-care diagnostics for respiratory infections.