Abstract：
:Antibiotics are unable to remove biofilms from surgical implants. This high antibiotic tolerance is related to bacterial persisters, a sub-population of bacteria phenotypically tolerant to antibiotics secondary to a reduced metabolic state. WLBU2 is an engineered cationic amphipathic peptide designed to maximize antimicrobial activity with minimal mammalian cell toxicity. The objective of this study was to test the ability of WLBU2 to remove Staphylococcus aureus surgical implant biofilms. WLBU2 effectively treated S. aureus biofilms formed by a variety of clinical MSSA and MRSA strains and created culture-negative implants in the in vitro biofilm model. Blocking bacterial metabolism by inhibiting oxidative phosphorylation did not affect WLBU2 killing compared to decreased killing by cefazolin. In the surgical implant infection animal model, WLBU2 decreased biofilm mass as compared to control, untreated samples. WLBU2 could rapidly eliminate implants in vitro and had sufficient efficacy in vivo with minimal systemic toxicity.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Mandell JB,Deslouches B,Montelaro RC,Shanks RMQ,Doi Y,Urish KLdoi
10.1038/s41598-017-17780-6subject
Has Abstractpub_date
2017-12-22 00:00:00pages
18098issue
1issn
2045-2322pii
10.1038/s41598-017-17780-6journal_volume
7pub_type
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