On-Demand Isolation of Bacteriophages Against Drug-Resistant Bacteria for Personalized Phage Therapy
Mattila, S., Ruotsalainen, P., & Jalasvuori, M. (2015). On-Demand Isolation of Bacteriophages Against Drug-Resistant Bacteria for Personalized Phage Therapy. Frontiers in Microbiology, 6, 1271. doi:10.3389/fmicb.2015.01271
Published inFrontiers in Microbiology
DisciplineSolu- ja molekyylibiologia
© 2015 Mattila, Ruotsalainen and Jalasvuori. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY).
Bacteriophages are bacterial viruses, capable of killing even multi-drug resistant bacterial cells. For this reason, therapeutic use of phages is considered as a possible alternative to conventional antibiotics. However, phages are very host specific in comparison to wide-spectrum antibiotics and thus preparation of phage-cocktails beforehand against pathogens can be difficult. In this study, we evaluate whether it may be possible to isolate phages on-demand from environmental reservoir. We attempted to enrich infectious bacteriophages from sewage against nosocomial drug-resistant bacterial strains of different medically important species in order to evaluate the probability of discovering novel therapeutic phages. Stability and host-range were determined for the acquired phages. Our results suggest that on-demand isolation of phages is possible against Pseudomonas aeruginosa, Salmonella and extended spectrum beta-lactamase Escherichia coli and Klebsiella pneumoniae. The probability of finding suitable phages was less than 40% against vancomycin resistant Enterococcus and Acinetobacter baumannii strains. Furthermore, isolation of new phages against methicillin resistant Staphylococcus aureus strains was found to be very difficult. ...