Olink® Explore 1536 is a high-multiplex, high-throughput protein biomarker platform that uses Proximity Extension Assay (PEA) technology coupled to an innovative new readout methodology based on Next Generation Sequencing (NGS) using the Illumina® NovaSeq instrument.
PEA uses matched pairs of antibodies (Abs) attached to unique DNA oligonucleotides. When the correct pair simultaneously binds to a target protein, their DNA oligonucleotides hybridize and serve as a unique template for DNA polymerase-dependent extension. This provides a double-stranded DNA molecule for each detected protein, providing a unique barcode for high-sensitivity, high-specificity readout. The well-established Olink Target 96-panels use qPCR for the readout step, but marrying our elegant PEA technology with NGS for readout in Olink Explore provides several advantages: