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Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Sci+Rep 2016 ; 6 (ä): ä Nephropedia Template TP
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The Use of a Novel NanoLuc -Based Reporter Phage for the Detection of Escherichia coli O157:H7 #MMPMID27624517
Zhang D; Coronel-Aguilera CP; Romero PL; Perry L; Minocha U; Rosenfield C; Gehring AG; Paoli GC; Bhunia AK; Applegate B
Sci Rep 2016[]; 6 (ä): ä PMID27624517show ga
Rapid detection of the foodborne pathogen Escherichia coli O157:H7 is of vital importance for public health worldwide. Among detection methods, reporter phages represent unique and sensitive tools for the detection of E. coli O157:H7 from food as they are host-specific and able to differentiate live cells from dead ones. Upon infection, target bacteria become identifiable since reporter genes are expressed from the engineered phage genome. The E. coli O157:H7 bacteriophage ?V10 was modified to express NanoLuc luciferase (Nluc) derived from the deep-sea shrimp Oplophorus gracilirostris. Once infected by the ?V10 reporter phage, E. coli O157:H7 produces a strong bioluminescent signal upon addition of commercial luciferin (Nano-Glo®). Enrichment assays using E. coli O157:H7 grown in LB broth with a reporter phage concentration of 1.76?×?102?pfu ml?1 are capable of detecting approximately 5 CFU in 7?hours. Comparable detection was achieved within 9?hours using 9.23?×?103?pfu ml?1 of phage in selective culture enrichments of ground beef as a representative food matrix. Therefore we conclude that this NanoLuc reporter phage assay shows promise for detection of E. coli O157:H7 from food in a simple, fast and sensitive manner.