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Highly multiplexed detection of microRNAs, proteins and small molecules using barcoded molecular probes and nanopore sequencing

Koch, C.; Reilly-ODonnell, B.; Gutierrez, R.; Lucarellli, C.; Siong Ng, F.; Gorelik, J.; Ivanov, A.; Edel, J.

2022-12-15 biophysics
10.1101/2022.12.13.520243 bioRxiv
Show abstract

Currently, most blood tests in a clinical setting only investigate a handful of markers. A low-cost, rapid, and highly multiplexed platform for the quantitative detection of blood biomarkers has the potential to advance clinical diagnostics beyond the single biomarker paradigm. In this study, we perform nanopore sequencing of barcoded molecular probes that have been engineered to recognise a panel of biological targets (miRNAs, proteins, and small molecules such as neurotransmitters), allowing for highly multiplexed simultaneous detection. Our workflow is rapid, from sample preparation to results in 1 hour. We also demonstrate that the strategy can be used to detect biomarkers directly from human serum without extraction or amplification. The established method is easily adaptable, as the number and type of targets detected can be greatly expanded depending on the application required.

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