Smart-Plexer: a breakthrough workflow for hybrid development of multiplex PCR assays

Area of Science:

• Molecular Biology
• Bioinformatics
• Infectious Disease Diagnostics

Background:

• Multiplex PCR assay development is complex, requiring extensive experimental testing that scales exponentially with the number of targets.
• Optimizing multiplex assays for specific and sensitive identification of multiple analytes in a single reaction is crucial for efficient diagnostics.

Purpose of the Study:

• To introduce and evaluate Smart-Plexer, a novel hybrid workflow for developing optimized multiplex PCR assays.
• To demonstrate the application of Smart-Plexer for designing a multiplex assay for seven common respiratory infection pathogens.

Main Methods:

• Smart-Plexer couples empirical testing of singleplex assays with computer simulation.
• The workflow analyzes kinetic inter-target distances between amplification curves to generate optimal multiplex PCR primer sets.
• The method was applied and evaluated for detecting seven respiratory infection targets.

Main Results:

• Smart-Plexer successfully generated an optimized multiplex PCR assay for seven respiratory pathogens.
• Single-channel multiplex assays, utilizing the Amplification Curve Analysis (ACA) methodology, accurately classified the presence of desired targets.
• The developed assay demonstrated capability for accurate multi-pathogen identification in a single test.

Conclusions:

• The Smart-Plexer workflow offers a simplified and data-driven approach to multiplex PCR assay design.
• This method significantly reduces the experimental burden associated with developing complex multiplex assays.
• Smart-Plexer enables accurate and sensitive detection of multiple pathogens, improving diagnostic efficiency for respiratory infections.