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Rapid, sensitive, and low-cost detection of Escherichia coli bacteria in contaminated water samples using a phage-based assay

Inadequate drinking water quality is among the major causes of preventable mortality, predominantly in young children. Identifying contaminated water sources remains a significant challenge, especially where resources are limited. The current methods for measuring Escherichia coli (E. coli), the WHO...

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Autores principales: Alonzo, Luis F., Jain, Paras, Hinkley, Troy, Clute-Reinig, Nick, Garing, Spencer, Spencer, Ethan, Dinh, Van T. T., Bell, David, Nugen, Sam, Nichols, Kevin P., Le Ny, Anne-Laure M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9095594/
https://www.ncbi.nlm.nih.gov/pubmed/35562180
http://dx.doi.org/10.1038/s41598-022-11468-2
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author Alonzo, Luis F.
Jain, Paras
Hinkley, Troy
Clute-Reinig, Nick
Garing, Spencer
Spencer, Ethan
Dinh, Van T. T.
Bell, David
Nugen, Sam
Nichols, Kevin P.
Le Ny, Anne-Laure M.
author_facet Alonzo, Luis F.
Jain, Paras
Hinkley, Troy
Clute-Reinig, Nick
Garing, Spencer
Spencer, Ethan
Dinh, Van T. T.
Bell, David
Nugen, Sam
Nichols, Kevin P.
Le Ny, Anne-Laure M.
author_sort Alonzo, Luis F.
collection PubMed
description Inadequate drinking water quality is among the major causes of preventable mortality, predominantly in young children. Identifying contaminated water sources remains a significant challenge, especially where resources are limited. The current methods for measuring Escherichia coli (E. coli), the WHO preferred indicator for measuring fecal contamination of water, involve overnight incubation and require specialized training. In 2016, UNICEF released a Target Product Profile (TPP) to incentivize product innovations to detect low levels of viable E. coli in water samples in the field in less than 6 h. Driven by this challenge, we developed a phage-based assay to detect and semi-quantify E. coli. We formulated a phage cocktail containing a total of 8 phages selected against an extensive bacterial strain library and recombined with the sensitive NanoLuc luciferase reporter. The assay was optimized to be processed in a microfluidic chip designed in-house and was tested against locally sourced sewage samples and on drinking water sources in Nairobi, Kenya. With this assay, combined with the microfluidic chip platform, we propose a complete automated solution to detect and semi-quantify E. coli at less than 10 MPN/100 mL in 5.5 h by minimally trained personnel.
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spelling pubmed-90955942022-05-13 Rapid, sensitive, and low-cost detection of Escherichia coli bacteria in contaminated water samples using a phage-based assay Alonzo, Luis F. Jain, Paras Hinkley, Troy Clute-Reinig, Nick Garing, Spencer Spencer, Ethan Dinh, Van T. T. Bell, David Nugen, Sam Nichols, Kevin P. Le Ny, Anne-Laure M. Sci Rep Article Inadequate drinking water quality is among the major causes of preventable mortality, predominantly in young children. Identifying contaminated water sources remains a significant challenge, especially where resources are limited. The current methods for measuring Escherichia coli (E. coli), the WHO preferred indicator for measuring fecal contamination of water, involve overnight incubation and require specialized training. In 2016, UNICEF released a Target Product Profile (TPP) to incentivize product innovations to detect low levels of viable E. coli in water samples in the field in less than 6 h. Driven by this challenge, we developed a phage-based assay to detect and semi-quantify E. coli. We formulated a phage cocktail containing a total of 8 phages selected against an extensive bacterial strain library and recombined with the sensitive NanoLuc luciferase reporter. The assay was optimized to be processed in a microfluidic chip designed in-house and was tested against locally sourced sewage samples and on drinking water sources in Nairobi, Kenya. With this assay, combined with the microfluidic chip platform, we propose a complete automated solution to detect and semi-quantify E. coli at less than 10 MPN/100 mL in 5.5 h by minimally trained personnel. Nature Publishing Group UK 2022-05-11 /pmc/articles/PMC9095594/ /pubmed/35562180 http://dx.doi.org/10.1038/s41598-022-11468-2 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Alonzo, Luis F.
Jain, Paras
Hinkley, Troy
Clute-Reinig, Nick
Garing, Spencer
Spencer, Ethan
Dinh, Van T. T.
Bell, David
Nugen, Sam
Nichols, Kevin P.
Le Ny, Anne-Laure M.
Rapid, sensitive, and low-cost detection of Escherichia coli bacteria in contaminated water samples using a phage-based assay
title Rapid, sensitive, and low-cost detection of Escherichia coli bacteria in contaminated water samples using a phage-based assay
title_full Rapid, sensitive, and low-cost detection of Escherichia coli bacteria in contaminated water samples using a phage-based assay
title_fullStr Rapid, sensitive, and low-cost detection of Escherichia coli bacteria in contaminated water samples using a phage-based assay
title_full_unstemmed Rapid, sensitive, and low-cost detection of Escherichia coli bacteria in contaminated water samples using a phage-based assay
title_short Rapid, sensitive, and low-cost detection of Escherichia coli bacteria in contaminated water samples using a phage-based assay
title_sort rapid, sensitive, and low-cost detection of escherichia coli bacteria in contaminated water samples using a phage-based assay
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9095594/
https://www.ncbi.nlm.nih.gov/pubmed/35562180
http://dx.doi.org/10.1038/s41598-022-11468-2
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