skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Impact of primer dimers and self-amplifying hairpins on reverse transcription loop-mediated isothermal amplification detection of viral RNA

Journal Article · · Analyst
DOI:https://doi.org/10.1039/c7an01897e· OSTI ID:1429722
 [1];  [1];  [1];  [2];  [2]
  1. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  2. Univ. of Texas Medical Branch, Galveston, TX (United States)

Loop-mediated isothermal amplification (LAMP), coupled with reverse transcription (RT), has become a popular technique for detection of viral RNA due to several desirable characteristics for use in point-of-care or low-resource settings. The large number of primers in LAMP (six per target) leads to an increased likelihood of primer-dimer interactions, and the inner primers in particular are prone to formation of stable hairpin structures due to their length (typically 40-45 bases). Although primer-dimers and hairpin structures are known features to avoid in nucleic acid amplification techniques, there is little quantitative information in literature regarding the impact of these structures on LAMP or RT-LAMP assays. In this study, we examine the impact of primer-dimers and hairpins on previously-published primer sets for dengue virus and yellow fever virus. We demonstrate that minor changes to the primers to eliminate amplifiable primer dimers and hairpins improves the performance of the assays when monitored in real time with intercalating dyes, and when monitoring a fluorescent endpoint using the QUASR technique. We also discuss the thermodynamic implications of these minor changes on the overall stability of amplifiable secondary structures, and we present a single thermodynamic parameter to predict the probability of non-specific amplification associated with LAMP primers.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
National Institutes of Health (NIH); USDOE
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1429722
Report Number(s):
SAND-2017-13686J; ANALAO; 659610
Journal Information:
Analyst, Vol. 143, Issue 8; ISSN 0003-2654
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 60 works
Citation information provided by
Web of Science

References (31)

A smartphone-based diagnostic platform for rapid detection of Zika, chikungunya, and dengue viruses journal March 2017
Detection of Loop-Mediated Isothermal Amplification Reaction by Turbidity Derived from Magnesium Pyrophosphate Formation journal November 2001
Analysis of genotype diversity and evolution of Dengue virus serotype 2 using complete genomes journal January 2016
Colorimetric detection of loop-mediated isothermal amplification reaction by using hydroxy naphthol blue journal March 2009
Nearest-Neighbor Thermodynamics and NMR of DNA Sequences with Internal A·A, C·C, G·G, and T·T Mismatches journal March 1999
A real-time reverse transcription loop-mediated isothermal amplification assay for the rapid detection of yellow fever virus journal October 2013
Surveillance for Western Equine Encephalitis, St. Louis Encephalitis, and West Nile Viruses Using Reverse Transcription Loop-Mediated Isothermal Amplification journal January 2016
Clustal W and Clustal X version 2.0 journal September 2007
Loop-mediated isothermal amplification of DNA journal June 2000
Detection of Japanese yam mosaic virus by RT-LAMP journal January 2003
Comparison of fluorescent intercalating dyes for quantitative loop-mediated isothermal amplification (qLAMP) journal July 2016
Robustness of a loop-mediated isothermal amplification reaction for diagnostic applications journal June 2011
Loop-Mediated Isothermal Amplification Technology: Towards Point of Care Diagnostics journal June 2012
Loop-mediated isothermal amplification (LAMP) of gene sequences and simple visual detection of products journal April 2008
Establishment of an accurate and fast detection method using molecular beacons in loop-mediated isothermal amplification assay journal January 2017
Quenching of Unincorporated Amplification Signal Reporters in Reverse-Transcription Loop-Mediated Isothermal Amplification Enabling Bright, Single-Step, Closed-Tube, and Multiplexed Detection of RNA Viruses journal March 2016
Detection of Acute HIV-1 Infection by RT-LAMP journal May 2015
A CCD-based fluorescence imaging system for real-time loop-mediated isothermal amplification-based rapid and sensitive detection of waterborne pathogens on microchips journal July 2011
Sequence-specific detection method for reverse transcription, loop-mediated isothermal amplification of HIV-1 journal June 2009
Analysis of a Reverse Transcription Loop-mediated Isothermal Amplification (RT-LAMP) for yellow fever diagnostic journal December 2015
Visual detection of isothermal nucleic acid amplification using pH-sensitive dyes journal February 2015
A unified view of polymer, dumbbell, and oligonucleotide DNA nearest-neighbor thermodynamics journal February 1998
Universal Single-Probe RT-PCR Assay for Diagnosis of Dengue Virus Infections journal December 2014
MUSCLE: multiple sequence alignment with high accuracy and high throughput journal March 2004
Yellow fever virus: Genetic and phenotypic diversity and implications for detection, prevention and therapy journal March 2015
Robust Strand Exchange Reactions for the Sequence-Specific, Real-Time Detection of Nucleic Acid Amplicons journal March 2015
The effect of main urine inhibitors on the activity of different DNA polymerases in loop-mediated isothermal amplification journal January 2017
Colorimetric Detection of Dengue by Single Tube Reverse-Transcription-Loop-Mediated Isothermal Amplification journal September 2015
Development of a TaqMan Array Card for Acute-Febrile-Illness Outbreak Investigation and Surveillance of Emerging Pathogens, Including Ebola Virus journal October 2015
Simultaneous multiple target detection in real-time loop-mediated isothermal amplification journal August 2012
Complete Genome Sequence of Clostridium botulinum CJ0611A1, a Type A(B) Isolate Associated with an International Outbreak of Botulism from Commercial Carrot Juice journal January 2021

Cited By (4)

Rapid sex determination of a wild passerine species using loop‐mediated isothermal amplification (LAMP) journal April 2019
A CRISPR–Cas9-triggered strand displacement amplification method for ultrasensitive DNA detection journal November 2018
Polymerase chain reaction combined with fluorescent lateral flow immunoassay based on magnetic purification for rapid detection of canine parvovirus 2 journal January 2019
Field diagnosis and genotyping of chikungunya virus using a dried reverse transcription loop-mediated isothermal amplification (LAMP) assay and MinION sequencing journal June 2019

Figures / Tables (11)