Loop-mediated isothermal amplification (LAMP) uses a strand-displacing DNA polymerase, and four to six primers, to rapidly amplify DNA at a single temperature. By eliminating temperature cycling, a LAMP reaction may be performed with an inexpensive heat source rather than requiring a thermocycler or qPCR instrument. The LAMP reaction is also easier to perform and interpret than qPCR, with novice users obtaining clear yes/no detection results typically within 30 min. These results may be visually interpreted with the naked eye based on turbidity, colorimetric dye, or fluorescence intensity changes. Finally, LAMP is more tolerant of matrix inhibitors found in diverse sample types, allowing many crude samples to be directly assayed without prior nucleic acid purification. For amplification of RNA targets, a one-step reaction can be carried out by simply adding a reverse transcriptase to a LAMP reaction (RT-LAMP).

SARS-Related Coronavirus 2 (SARS-CoV-2) research and surveillance continues to be paramount, especially given the proportion of asymptotic individuals, emergence of viral variants, and desire to return to work and school. To address the need and urgency of this testing, point-of-care solutions with high sensitivity and rapid turn-around times are required. Several reverse transcription loop-mediated isothermal amplification (RT-LAMP) products have been developed to rapidly, robustly, and specifically detect SARS-CoV-2 and other viral pathogens. Our work at Thermo Fisher Scientific provides the scientific community with RT-LAMP solutions for viral pathogen research and surveillance, including protocols, enzymes, a reaction master mix, and an all-inclusive SARS-CoV-2 assay kit.

Learning objectives:

• Discuss and learn how to prepare and set-up your workspace for RT-LAMP reactions to achieve the best outcome
• Describe the general workflow to develop and run RT-LAMP reactions to detect viral pathogens
• Discover how and why researchers are using RT-LAMP for SARS-CoV-2 research and surveillance

Ingrida Vendelė
R&D Manager for Molecular and Synthetic Biology
Thermo Fisher Scientific

Dr. Ingrida Vendelė earned her Ph.D. in Microbiology and Biotechnology from the University of Aberdeen, UK, where she studied immune responses to fungal infectious diseases. She continued her advanced training as a Research Fellow at the Roslin Institute, University of Edinburgh, UK where she developed novel diagnostic and surveillance approaches to detect RNA viruses. Ingrida recently joined Thermo Fisher Scientific as R&D Manager for Molecular and Synthetic Biology. Since joining, Ingrida has focused on leveraging her previous experiences whilst developing isothermal amplification solutions for viral pathogen research and surveillance via RT-LAMP approaches.

Leann Buhrow
R&D Scientist, Molecular Biology
Thermo Fisher Scientific

Dr. Leann Buhrow recently joined Thermo Fisher Scientific as an R&D Scientist and she leverages her background in infectious disease to address challenges of the COVID-19 pandemic. Her current focus includes developing RT-LAMP-based solutions for SARS-CoV-2 research and surveillance. Leann earned her Ph.D. in Cell and Molecular Biology from Michigan State University, USA. She received advanced postdoctoral training at The National Research Council Canada and was also an individual NIH National Research Service Award Fellow at University of Texas-Southwestern Medical Center, USA.