About: Background Rapid and reliable diagnostic assays were critical for prevention and control of the coronavirus pneumonia caused by COVID-19. Objective This study was to establish one-pot real-time reverse-transcription loop-mediated isothermal amplification (RT-LAMP) assay and one-pot visual RT-LAMP assay for the detection of COVID-19. Methods Six specific LAMP primers targeting the N gene of COVID-19 were designed, the RT-LAMP reaction system was optimized with plasmid pUC57 containing N gene sequence, the detection limit was determined with a serial dilution of the plasmid pUC57 containing N gene sequence, and the one-pot real-time RT-LAMP assay and one-pot visual RT-LAMP assay for the detection of COVID-19 were established. Results Our results showed that the one-pot RT-LAMP assays can detect COVID-19 with a limit of ≥ 6 copies per μl−1 of pUC57 containing N gene sequence. Conclusion This study provides rapid, reliable and sensitive tools for facilitating preliminary and cost-effective prevention and control of COVID-19.   Goto Sponge  NotDistinct  Permalink

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  • Background Rapid and reliable diagnostic assays were critical for prevention and control of the coronavirus pneumonia caused by COVID-19. Objective This study was to establish one-pot real-time reverse-transcription loop-mediated isothermal amplification (RT-LAMP) assay and one-pot visual RT-LAMP assay for the detection of COVID-19. Methods Six specific LAMP primers targeting the N gene of COVID-19 were designed, the RT-LAMP reaction system was optimized with plasmid pUC57 containing N gene sequence, the detection limit was determined with a serial dilution of the plasmid pUC57 containing N gene sequence, and the one-pot real-time RT-LAMP assay and one-pot visual RT-LAMP assay for the detection of COVID-19 were established. Results Our results showed that the one-pot RT-LAMP assays can detect COVID-19 with a limit of ≥ 6 copies per μl−1 of pUC57 containing N gene sequence. Conclusion This study provides rapid, reliable and sensitive tools for facilitating preliminary and cost-effective prevention and control of COVID-19.
Subject
  • Zoonoses
  • Genetics
  • Viral respiratory tract infections
  • COVID-19
  • Cooking weights and measures
  • Medical tests
  • Molecular biology
  • Occupational safety and health
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