Abstract
Waterborne diseases due to pathogen contamination in water are a serious problem all over the world. Accurate and simultaneous detection of pathogens in water is important to protect public health. In this study, we developed a method to simultaneously detect various pathogenic Escherichia coli by sequencing the amplicons of multiplex PCR. Our newly designed multiplex PCR amplified five genes for pathogenic E. coli (uidA, stx1, stx2, STh gene, and LT gene). Additional two PCR assays (for aggR and eae) were also designed and included in the amplicon sequencing analysis. The same assays were also used for digital PCR (dPCR). Strong positive correlations were observed between the sequence read count and the dPCR results for most of the genes targeted, suggesting that our multiplex PCR-amplicon sequencing approach could provide quantitative information. The method was also successfully applied to monitor the level of pathogenic E. coli in river water and wastewater samples. The approach shown here could be expanded by targeting genes for other pathogens.
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All data generated or analyzed during this study are included in this published article [and its supplementary information files].
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Acknowledgements
We thank Professor Tetsuya Hayashi and Professor Yoshitoshi Ogura for their advice on experimental design. We also thank Tomoko Fukudome, Yasuhiko Kawahara at the Miyazaki Prefectural Institute of Public Health and Environment for providing us with a DNA standard solution containing the target gene. The Bioengineering Lab. provided various information and suggestions for the sequencing data analysis.
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This publication was supported by Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Number JP 21H0362021.
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Conceptualization, supervision, investigation, writing—original draft, Y.S.; investigation, formal analysis, methodology, validation, H.S.; visualization, writing—review and editing, S.T.; methodology, Y.H., T.M.; validation, writing—review and editing, K.N; validation, A.I, Y.M.; formal analysis, software, validation, visualization, writing—review and editing, S.I. funding acquisition, Y.S. All authors have read and agreed to the published version of the manuscript.
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Suzuki, Y., Shimizu, H., Tamai, S. et al. Simultaneous detection of various pathogenic Escherichia coli in water by sequencing multiplex PCR amplicons. Environ Monit Assess 195, 264 (2023). https://doi.org/10.1007/s10661-022-10863-6
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DOI: https://doi.org/10.1007/s10661-022-10863-6