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Lamas A, Azinheiro S, Roumani F, Prado M, Garrido-Maestu A. Evaluation of the effect of outer primer structure, and inner primer linker sequences, in the performance of Loop-mediated isothermal amplification. Talanta 2023; 260:124642. [PMID: 37167680 DOI: 10.1016/j.talanta.2023.124642] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/27/2023] [Accepted: 05/02/2023] [Indexed: 05/13/2023]
Abstract
Loop-mediated isothermal amplification, or LAMP, is nowadays the most popular isothermal nucleic acid amplification technique. This technique implements a minimum of four primers, named outer (F3/B3) and inner primers (FIP/BIP). The inner primers hybridize in two distinct regions, and some studies have reported that the usage of a linker, typically composed of four thymines, in the middle of these primers can improve assay performance. In addition to this, dual-priming oligonucleotides, DPO, have been reported to provide highly specific reducing non-specific amplifications. Considering the large number of primers implemented in LAMP assays, in the current study the suitability of DPO primers replacing regular outer primers; and their combination with different linker sequences in the inner primers were explored. The results demonstrated that replacing standard F3/B3 by DPO primers does not significantly affect that overall performance of the assay, and provides additional stability to temperature changes. This observations were consistent regardless the type of linker implemented in the inner primers, out of which in the current study a linker composed of thymines significantly outperformed the other options tested, most likely due to a combination of sequence and physical structure.
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Affiliation(s)
- Alexandre Lamas
- Food Hygiene, Inspection and Control Laboratory, Department of Analytical Chemistry, Nutrition and Bromatology, Universidad de Santiago de Compostela, 27002, Lugo, Spain
| | - Sarah Azinheiro
- International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330, Braga, Portugal; Department of Analytical Chemistry, Nutrition and Food Science, Faculty of Veterinary Science, University of Santiago de Compostela, 27002, Lugo, Spain
| | - Foteini Roumani
- International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330, Braga, Portugal; Department of Analytical Chemistry, Nutrition and Food Science, Faculty of Veterinary Science, University of Santiago de Compostela, 27002, Lugo, Spain
| | - Marta Prado
- International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330, Braga, Portugal
| | - Alejandro Garrido-Maestu
- International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330, Braga, Portugal.
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3
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Li D, Hao C, Liu Z, Wang S, Wang Y, Chao Z, Gao S, Chen S. Development of a novel dual priming oligonucleotide system‐based PCR assay for specific detection of
Salmonella
from food samples. J Food Saf 2020. [DOI: 10.1111/jfs.12789] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dan‐Dan Li
- Haikou Customs District P.R.China Haikou Hainan China
| | - Chun‐Bo Hao
- Hainan Province People's Hospital Haikou Hainan China
| | - Zhong‐Mei Liu
- Harbin Customs District P.R.China Harbin Heilongjiang China
| | - Sui‐Jia Wang
- Haikou Customs District P.R.China Haikou Hainan China
| | - Yu Wang
- Chongqing Customs District P.R.China Chongqing China
| | - Zhe Chao
- Institute of Animal Science and Veterinary MedicineHainan Academy of Agricultural Sciences Haikou Hainan China
| | | | - Si Chen
- College of Animal Science and TechnologyHainan University Haikou Hainan China
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4
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Wang M, Yan Y, Wang R, Wang L, Zhou H, Li Y, Tang L, Xu Y, Jiang Y, Cui W, Qiao X. Simultaneous Detection of Bovine Rotavirus, Bovine Parvovirus, and Bovine Viral Diarrhea Virus Using a Gold Nanoparticle-Assisted PCR Assay With a Dual-Priming Oligonucleotide System. Front Microbiol 2019; 10:2884. [PMID: 31921061 PMCID: PMC6920155 DOI: 10.3389/fmicb.2019.02884] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 11/29/2019] [Indexed: 12/17/2022] Open
Abstract
Bovine rotavirus (BRV), bovine parvovirus (BPV), and bovine viral diarrhea virus (BVDV) are the pathogens that cause diarrhea primarily in newborn calves. A mixed infection of BRV, BPV, and BVDV makes clinical diagnosis difficult. In this study, we designed dual-priming oligonucleotide (DPO) primers the VP6 gene of BRV, VP2 gene of BPV, and 5′UTR gene of BVDV and synthesized gold nanoparticles (GNPs) with an average diameter of 10 nm. We combined the DPOs with the GNPs to develop a DPO-nanoPCR assay for detecting BRV, BPV, and BVDV. The annealing temperature, primer concentration, and GNP concentration were optimized for this assay. Compared to a conventional PCR assay, the DPO-nanoPCR assay allowed the use of a wider range of annealing temperatures (41–65°C) to effectively amplify target genes. PCR amplification was the most efficient at 56.2°C using conventional primers. The optimal volume of all the primers (10 μM) was 1.0 μL. The optimal volume of GNPs (10 nM) for all the reactions was 0.5 μL. The detection limits of DPO-nanoPCR for pMD19-T-VP6, pMD19-T-VP2, and pMD19-T-5′UTR were 9.40 × 102 copies/μL, 5.14 × 103 copies/μL, and 4.09 × 101 copies/μL, respectively; and those using conventional PCR were 9.40 × 104 copies/μL, 5.14 × 105 copies/μL, and 4.09 × 104 copies/μL, respectively. The sensitivity of DPO-nanoPCR was at least 100-fold higher than that of conventional PCR. The specificity detection showed that the DPO-nanoPCR was able to specifically detect BRV, BPV, and BVDV. Use of clinical samples indicated that target viruses can be detected accurately. Thus, DPO-nanoPCR is a new powerful, simple, specific, and sensitive tool for detecting mixed infections of BRV, BPV, and BVDV.
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Affiliation(s)
- Mengmeng Wang
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yue Yan
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Ruichong Wang
- Department for Radiological Protection, Heilongjiang Province Center for Disease Control and Prevention, Harbin, China
| | - Li Wang
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Han Zhou
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yijing Li
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Lijie Tang
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yigang Xu
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yanping Jiang
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Wen Cui
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Xinyuan Qiao
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
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6
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Xu YG, Sun B, Zhao HY, Liu ZM, Jiang YP, Wang L, Qiao XY, Li YJ, Tang LJ. Development and evaluation of a dual priming oligonucleotide system-based multiplex PCR assay for simultaneous detection of six foodborne pathogens. Eur Food Res Technol 2016. [DOI: 10.1007/s00217-016-2765-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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