In this paper (purchase required, GBP £29.95) the authors present a biosensing platform termed one-pot TLAMP-PfAgo assay (OTPA) that integrates the rapid amplification of turn-back loop primer-accelerated loop-mediated isothermal amplification (LAMP) (TLAMP) with the sequence-specific detection of Pyrococcus furiosus Argonaute (PfAgo).
They report that this system features a novel heat-activatable design using microcrystalline wax to spatially separate reactions within a single tube, enabling contamination-free and streamlined operation. The OTPA assay achieves sensitive and specific detection, with limits of detection as low as 3×10−4 ng/µL for pork DNA and 2×10−4 ng/µL for beef DNA within 30 minutes. It successfully enables duplex target identification and has been validated with commercial meat products, showing concordance with standard polymerase chain reaction (PCR)-based qualitative detection.
The result can be directly visualized under blue light
They conclude that this is a cost-effective and simple platform for point-of-use testing.
For an explanation of LAMP principles, see also FAN’s Analytical Explainers pages.
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