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00925njm 22002777a 4500 dc Borrero Del Pino, Juan author Chen, Yuqing author Dunny, Gary M. author Kaznessis, Yiannis N. author 2014-06-04 We designed Lactococcus lactis to detect Enterococcus faecalis. Upon detection, L. lactis produce and secrete antienterococcal peptides. The peptides inhibit enterococcal growth and reduce viability of enterococci in the vicinity of L. lactis. The enterococcal sex pheromone cCF10 serves as the signal for detection. Expression vectors derived from pCF10, a cCF10-responsive E. faecalis sex-pheromone conjugative plasmid, were engineered in L. lactis for the detection system. Recombinant host strains were engineered to express genes for three bacteriocins, enterocin A, hiracin JM79 and enterocin P, each with potent antimicrobial activity against E. faecalis. Sensitive detection and specific inhibition occur both in agar and liquid media. The engineered L. lactis also inhibited growth of multidrug-resistant E. faecium strains, when induced by cCF10. The presented vectors and strains can be components of a toolbox for the development of alternative antibiotic technologies targeting enterococci at the site of infection. Borrero, J., Chen, Y., Dunny, G. M., & Kaznessis, Y. N. (2015). Modified lactic acid bacteria detect and inhibit multiresistant enterococci. ACS Synthetic Biology, 4(3), 299-306. https://doi.org/10.1021/SB500090B 2161-5063 2161-5063 10.1021/sb500090b https://hdl.handle.net/20.500.14352/116433 https://doi.org/10.1021/SB500090B Modified Lactic Acid Bacteria Detect and Inhibit Multiresistant Enterococci