Abstract
Objectives
Serotype 2 of dengue virus (DENV-2) is the most prevalent cause of dengue fevers. In this study, the C-prM gene was used for specific detection of DENV-2 by RT-LAMP assay. The RT-LAMP assay was optimized using the Taguchi design of experiments.
Results
The efficiency of the assay in such optimal conditions resulted in 100% sensitivity, 100% specificity, and 100% overall accuracy for detection of 4 copies/μL of the genome of DENV-2. In addition, the detection of 2 copies/μL of the genome of DENV-2 was feasible, although the sensitivity was 50%. Considering the importance of the specific detection of the dengue virus serotypes, the cost-effective RT-LAMP approach can be used for rapid, specific, and sensitive detection of DENV-2.
Conclusion
RT-LAMP, as a cost-effective method, was optimized using Taguchi array approach for specific and rapid detection of DENV-2. Such methods can facilitate the diagnosis procedure in remote regions.
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Data availability
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Abbreviations
- DENV:
-
Dengue virus
- RT-LAMP:
-
Reverse transcription loop-mediated isothermal amplification
- DF:
-
Dengue fever
- DHF:
-
Dengue hemorrhagic fever
- DSS:
-
Dengue shock syndrome
- DENV-2:
-
Serotype 2 of dengue virus
- RT-RPA:
-
Reverse transcription recombinase polymerase amplification
- Bst :
-
Bacillus stearothermophilus
- DoE:
-
Design of experiment
- FIP:
-
Forward inner primer
- F3:
-
Forward outer primer
- FL:
-
Forward loop primer
- BIP:
-
Backward inner primer
- B3:
-
Backward outer primer
- BL:
-
Backward loop primer
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Acknowledgements
This research covers a part of a PhD program. The authors would like to thank the Molecular Virology department and Arboviruses and Viral Hemorrhagic Fevers Department of Pasteur Institute of Iran, Tehran. Great Thanks to Moslem Papizadeh for helping us to improve the manuscript.
Supplementary Information
Results for job clustalo-E20200221-153418-0969-15241688-p1m.
Funding
The study, as a PhD program (TP-9356), was financially supported by Pasteur Institute of Iran.
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MS: designed and performed experiments, analyzed data and co-wrote the manuscript. KA, MS, FR, and AA: designed experiments, supervised the research and co-wrote the manuscript. All authors read and approved the final manuscript.
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The present study was performed on serum sample of suspected cases with Arboviral infections at the National Reference Laboratory for Arboviruses and Viral Hemorrhagic Fever (Pasteur Institute of Iran) in the context of the national surveillance program.
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Personal identifiers were removed from the samples before performing the experiments related to this study. Because of the retrospective design of the study, we did not have access to patients; thus, we could not obtain informed consent from subjects.
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Shoushtari, M., Salehi-Vaziri, M., Roohvand, F. et al. Taguchi array optimization of the reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay for sensitive and rapid detection of dengue virus serotype 2. Biotechnol Lett 43, 2149–2160 (2021). https://doi.org/10.1007/s10529-021-03175-1
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DOI: https://doi.org/10.1007/s10529-021-03175-1