New realm of precision multiplexing enabled by massively-parallel single molecule UltraPCR

Area of Science:

• Molecular Biology
• Biotechnology
• Genomics

Background:

• Polymerase Chain Reaction (PCR) is a cornerstone of nucleic acid detection.
• Multiplex PCR enhances sensitivity and reduces sample needs but faces challenges in amplification kinetics and target discrimination.
• High-order multiplex PCR panels are difficult to adopt due to these limitations.

Approach:

• UltraPCR employs a centrifugation workflow to partition a single PCR reaction into approximately 34 million spatially separated compartments.
• In situ thermocycling followed by light sheet scanning enables 3D reconstruction of fluorescent signals within the partitioned reaction.
• This single-molecule partitioning isolates amplification events, preventing inter-target competition.

Key Points:

• UltraPCR facilitates isolated amplification, eliminating competition and ensuring unambiguous detection signals.
• The system supports multiplexing up to 10 different fluorescent dyes in a single reaction.
• Comboplex technology, using combinatorial fluorescent labeling, enables simultaneous detection of 22 targets with high precision.

Conclusions:

• UltraPCR offers a new paradigm for PCR amplification and multiplexed detection.
• This technology has the potential to significantly expand the applications of PCR.
• It enables a new generation of precision genomics assays with unprecedented multiplexing capabilities.