Development of a novel multiplexed qPCR and Pyrosequencing method for the detection of human pathogenic yersiniae

Thomas, Matthew C.; Janzen, Timothy W.; Huscyzynsky, G.; Mathews, Amit; Amoako, Kingsley K.

doi:10.1016/j.ijfoodmicro.2017.06.019

Cited by 8 publications

(1 citation statement)

References 39 publications

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“…In the work of Ishii et al microfluidic quantitative PCR (qPCR) technology was applied for the simultaneous detection and quantification of multiple food- and waterborne pathogens as L. monocytogenes, Salmonella Typhimurium, V. parahaemolyticus , and Clostridium perfringens (Ishii et al, 2013). Rapid and high-throughput identification of more food-borne bacterial pathogens by multiple analysis platforms have been developed and combination of several detection methods is also possible (Cremonesi et al, 2014; Salihah et al, 2016; Nasrabadi et al, 2017; Thomas et al, 2017; Ahn et al, 2018; Carloni et al, 2018; Zhang et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Detection of 12 Common Food-Borne Bacterial Pathogens by TaqMan Real-Time PCR Using a Single Set of Reaction Conditions

Liu¹,

Cao²,

Wang³

et al. 2019

Front. Microbiol.

104

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Food safety has become an important public health issue worldwide. However, conventional methods for detection of food-borne pathogens are complicated, and labor-intensive. Moreover, the sensitivity is often low, and it is difficult to achieve high-throughput detection. This study developed a TaqMan real-time polymerase chain reaction (PCR) assay for the simultaneous detection and quantification of 12 common pathogens in a single reaction, including Escherichia coli O157:H7, Listeria monocytogenes/ivanovii, Salmonella enterica, Vibrio parahaemolyticus , β -streptococcus hemolyticus, Yersinia enterocolitica, Enterococcus faecalis, Shigella spp., Proteus mirabilis, Vibrio fluvialis, Staphylococcus aureus , and Campylobacter jejuni in food and drinking water. Based on published sequence data, specific primers, and fluorescently-labeled hybridization probes were designed targeting based on the virulence genes of the 12 pathogens, and these primers and probes were optimized to achieve consistent reaction conditions. The assay was evaluated using 106 pure bacterial culture strains. There was no cross-reaction among the different pathogens. The analytical sensitivity was 1 copy/μL for E. coli O157:H7, L. monocytogenes/ivanovii , β -streptococcus hemolyticus, Shigella spp., P. mirabilis , and V. fluvialis , 10 copies/μL for S. enterica, V. parahaemolyticus, Y. enterocolitica, E. faecalis, S. aureus , and C. jejuni , respectively. The limit of detection (LOD) was 296, 500, 177, 56, 960, 830, 625, 520, 573, 161, 875, and 495 CFU/mL for E. coli O157:H7, L. monocytogenes/ivanovii, S. enterica, V. parahaemolyticus , β -streptococcus hemolyticus, Y. enterocolitica, E. faecalis, Shigella spp., P. mirabilis, V. fluvialis, S. aureus , and C. jejuni , respectively. The limit of detection for the assay in meat samples was 10 3 CFU/g for V. parahaemolyticus and 10 4 CFU/g for other 11 strains. Together, these results indicate that the optimized TaqMan real-time PCR assay will be useful for routine detection of pathogenic bacteria due to its rapid analysis, low cost, high-throughput, high specificity, and sensitivity.

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