TY - JOUR
T1 - Modified lactic acid bacteria detect and inhibit multiresistant enterococci
AU - Borrero, Juan
AU - Chen, Yuqing
AU - Dunny, Gary M.
AU - Kaznessis, Yiannis N.
N1 - Publisher Copyright:
© 2014 American Chemical Society.
PY - 2015/3/20
Y1 - 2015/3/20
N2 - 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.
AB - 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.
KW - Enterococcus faecalis
KW - Lactococcus lactis
KW - drug delivery vector
KW - lactic acid bacteria
KW - recombinant plasmids
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U2 - 10.1021/sb500090b
DO - 10.1021/sb500090b
M3 - Article
C2 - 24896372
AN - SCOPUS:84925592376
SN - 2161-5063
VL - 4
SP - 299
EP - 306
JO - ACS Synthetic Biology
JF - ACS Synthetic Biology
IS - 3
ER -