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Details

Autor(en) / Beteiligte
Titel
LAMP-Seq enables sensitive, multiplexed COVID-19 diagnostics using molecular barcoding
Ist Teil von
  • Nature biotechnology, 2021-12, Vol.39 (12), p.1556-1562
Ort / Verlag
New York: Nature Publishing Group US
Erscheinungsjahr
2021
Quelle
MEDLINE
Beschreibungen/Notizen
  • Frequent testing of large population groups combined with contact tracing and isolation measures will be crucial for containing Coronavirus Disease 2019 outbreaks. Here we present LAMP-Seq, a modified, highly scalable reverse transcription loop-mediated isothermal amplification (RT–LAMP) method. Unpurified biosamples are barcoded and amplified in a single heat step, and pooled products are analyzed en masse by sequencing. Using commercial reagents, LAMP-Seq has a limit of detection of ~2.2 molecules per µl at 95% confidence and near-perfect specificity for severe acute respiratory syndrome coronavirus 2 given its sequence readout. Clinical validation of an open-source protocol with 676 swab samples, 98 of which were deemed positive by standard RT–qPCR, demonstrated 100% sensitivity in individuals with cycle threshold values of up to 33 and a specificity of 99.7%, at a very low material cost. With a time-to-result of fewer than 24 h, low cost and little new infrastructure requirement, LAMP-Seq can be readily deployed for frequent testing as part of an integrated public health surveillance program. SARS-CoV-2 detection with LAMP-Seq combines isothermal amplification and barcoding with high-throughput sequencing.

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