Title |
A novel diagnostic method for malaria using loop-mediated isothermal amplification (LAMP) and MinION™ nanopore sequencer
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Published in |
BMC Infectious Diseases, September 2017
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DOI | 10.1186/s12879-017-2718-9 |
Pubmed ID | |
Authors |
Kazuo Imai, Norihito Tarumoto, Kazuhisa Misawa, Lucky Ronald Runtuwene, Jun Sakai, Kyoko Hayashida, Yuki Eshita, Ryuichiro Maeda, Josef Tuda, Takashi Murakami, Shigefumi Maesaki, Yutaka Suzuki, Junya Yamagishi, Takuya Maeda |
Abstract |
A simple and accurate molecular diagnostic method for malaria is urgently needed due to the limitations of conventional microscopic examination. In this study, we demonstrate a new diagnostic procedure for human malaria using loop mediated isothermal amplification (LAMP) and the MinION™ nanopore sequencer. We generated specific LAMP primers targeting the 18S-rRNA gene of all five human Plasmodium species including two P. ovale subspecies (P. falciparum, P. vivax, P. ovale wallikeri, P. ovale curtisi, P. knowlesi and P. malariae) and examined human blood samples collected from 63 malaria patients in Indonesia. Additionally, we performed amplicon sequencing of our LAMP products using MinION™ nanopore sequencer to identify each Plasmodium species. Our LAMP method allowed amplification of all targeted 18S-rRNA genes of the reference plasmids with detection limits of 10-100 copies per reaction. Among the 63 clinical samples, 54 and 55 samples were positive by nested PCR and our LAMP method, respectively. Identification of the Plasmodium species by LAMP amplicon sequencing analysis using the MinION™ was consistent with the reference plasmid sequences and the results of nested PCR. Our diagnostic method combined with LAMP and MinION™ could become a simple and accurate tool for the identification of human Plasmodium species, even in resource-limited situations. |
X Demographics
Geographical breakdown
Country | Count | As % |
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United Kingdom | 1 | 20% |
Unknown | 4 | 80% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 4 | 80% |
Science communicators (journalists, bloggers, editors) | 1 | 20% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Unknown | 186 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Researcher | 35 | 19% |
Student > Ph. D. Student | 26 | 14% |
Student > Master | 18 | 10% |
Student > Bachelor | 18 | 10% |
Lecturer | 9 | 5% |
Other | 36 | 19% |
Unknown | 44 | 24% |
Readers by discipline | Count | As % |
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Biochemistry, Genetics and Molecular Biology | 37 | 20% |
Agricultural and Biological Sciences | 31 | 17% |
Engineering | 15 | 8% |
Medicine and Dentistry | 14 | 8% |
Immunology and Microbiology | 10 | 5% |
Other | 27 | 15% |
Unknown | 52 | 28% |