10.1021/acssensors.6b00379.s002 Bo Tian Bo Tian Jing Ma Jing Ma Teresa Zardán Gómez de la Torre Teresa Zardán Gómez de la Torre Ádám Bálint Ádám Bálint Marco Donolato Marco Donolato Mikkel Fougt Hansen Mikkel Fougt Hansen Peter Svedlindh Peter Svedlindh Mattias Strömberg Mattias Strömberg Rapid Newcastle Disease Virus Detection Based on Loop-Mediated Isothermal Amplification and Optomagnetic Readout American Chemical Society 2016 LAMP primers RT-PCR target sequence user-friendly readout methods Newcastle disease virus RNA PCR detection MNP assay time amplification schemes Loop-Mediated Isothermal Amplification Optomagnetic Readout Rapid 10 aM transcription LAMP hydrodynamic size DNA Rapid Newcastle Disease Virus Detection tissue specimens 30 min out-of-lab settings RT-LAMP Biotinylated amplicons optomagnetic nanoparticle-based readout system LAMP target sequence amplification efficiency optomagnetic readout system 2016-09-19 00:00:00 Dataset https://acs.figshare.com/articles/dataset/Rapid_Newcastle_Disease_Virus_Detection_Based_on_Loop-Mediated_Isothermal_Amplification_and_Optomagnetic_Readout/3859536 Rapid and sensitive diagnostic methods based on isothermal amplification are ideal substitutes for PCR in out-of-lab settings. However, there are bottlenecks in terms of establishing low-cost and user-friendly readout methods for isothermal amplification schemes. Combining the high amplification efficiency of loop-mediated isothermal amplification (LAMP) with an optomagnetic nanoparticle-based readout system, we demonstrate ultrasensitive and rapid detection of Newcastle disease virus RNA. Biotinylated amplicons of LAMP and reverse transcription LAMP (RT-LAMP) bind to streptavidin-coated magnetic nanoparticles (MNPs) resulting in a dramatical increase in the hydrodynamic size of the MNPs. This increase was measured by an optomagnetic readout system and provided quantitative information on the amount of LAMP target sequence. Our assay resulted in a limit of detection of 10 aM of target sequence with a total assay time of 30 min. The assay has also been tested on clinical samples (vaccine and tissue specimens) with a performance comparable to real-time RT-PCR. By changing the LAMP primers, this strategy can serve as a general method for the detection of other DNA/RNA targets with high specificity and sensitivity.