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• W2950591675 endingPage "e0006671" @default.
• W2950591675 startingPage "e0006671" @default.
• W2950591675 abstract "Manipulation of natural mosquito populations using the endosymbiotic bacteria Wolbachia is being investigated as a novel strategy to reduce the burden of mosquito-borne viruses. To evaluate the efficacy of these interventions, it will be critical to determine Wolbachia infection frequencies in Aedes aegypti mosquito populations. However, current diagnostic tools are not well-suited to fit this need. Morphological methods cannot identify Wolbachia, immunoassays often suffer from low sensitivity and poor throughput, while PCR and spectroscopy require complex instruments and technical expertise, which restrict their use to centralized laboratories. To address this unmet need, we have used loop-mediated isothermal amplification (LAMP) and oligonucleotide strand displacement (OSD) probes to create a one-pot sample-to-answer nucleic acid diagnostic platform for vector and symbiont surveillance. LAMP-OSD assays can directly amplify target nucleic acids from macerated mosquitoes without requiring nucleic acid purification and yield specific single endpoint yes/no fluorescence signals that are observable to eye or by cellphone camera. We demonstrate cellphone-imaged LAMP-OSD tests for two targets, the Aedes aegypti cytochrome oxidase I (coi) gene and the Wolbachia surface protein (wsp) gene, and show a limit of detection of 4 and 40 target DNA copies, respectively. In a blinded test of 90 field-caught mosquitoes, the coi LAMP-OSD assay demonstrated 98% specificity and 97% sensitivity in identifying Ae. aegypti mosquitoes even after 3 weeks of storage without desiccant at 37°C. Similarly, the wsp LAMP-OSD assay readily identified the wAlbB Wolbachia strain in field-collected Aedes albopictus mosquitoes without generating any false positive signals. Modest technology requirements, minimal execution steps, simple binary readout, and robust accuracy make the LAMP-OSD-to-cellphone assay platform well suited for field vector surveillance in austere or resource-limited conditions." @default.
• W2950591675 created "2019-06-27" @default.
• W2950591675 creator A5001983855 @default.
• W2950591675 creator A5027063217 @default.
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• W2950591675 creator A5053206207 @default.
• W2950591675 creator A5065789682 @default.
• W2950591675 creator A5089627980 @default.
• W2950591675 date "2018-08-30" @default.
• W2950591675 modified "2023-10-01" @default.
• W2950591675 title "Direct nucleic acid analysis of mosquitoes for high fidelity species identification and detection of Wolbachia using a cellphone" @default.
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• W2950591675 doi "https://doi.org/10.1371/journal.pntd.0006671" @default.
• W2950591675 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6116922" @default.
• W2950591675 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30161131" @default.

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