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Titanium coating with mussel inspired polymer and bio-orthogonal chemistry enhances antimicrobial activity against Staphylococcus aureus

"Czuban, M.; Kulka, M. W.; Wang, L.; Koliszak, A.; Achazi, K.; Schlaich, C.; Donskyi, I. S.; Di Luca, M.; Mejia Oneto, J. M.; Royzen, M.; Haag, R.; Trampuz, A." – 2020

Implant-associated infections present severe and difficult-to-treat complications after surgery, related to implant biofilm colonization. Systemic administration of antibiotics cannot reach sufficient concentrations at the infected site and may be toxic. Here we describe how mussel-inspired dendritic material coated on a titanium surface can locally activate a prodrug of daptomycin (pro-dapto) to treat methicillin-resistant Staphylococcus aureus. The mechanism of the prodrug activation is based on bio-orthogonal click chemistry between a tetrazine (Tz) and trans-cyclooctene (TCO). The former is attached to the dendritic polymer, while the later converts daptomycin into a prodrug. Characterization of the material's properties revealed that it is hydrophobic, non-toxic, and stable for a prolonged period of time. We envision that the titanium coated dendritic material will be able to improve the treatment of implant-associated infections by concentrating systemically administered antibiotic prodrugs, thus converting them into active localized medicines.

Title
Titanium coating with mussel inspired polymer and bio-orthogonal chemistry enhances antimicrobial activity against Staphylococcus aureus
Author
"Czuban, M.; Kulka, M. W.; Wang, L.; Koliszak, A.; Achazi, K.; Schlaich, C.; Donskyi, I. S.; Di Luca, M.; Mejia Oneto, J. M.; Royzen, M.; Haag, R.; Trampuz, A."
Publisher
Mater Sci Eng C Mater Biol Appl
Keywords
"*Methicillin-Resistant Staphylococcus aureus; *Staphylococcal Infections/drug therapy; *Staphylococcus aureus; Anti-Bacterial Agents/pharmacology/therapeutic use; Antibiotic delivery; Antibiotic release; Antimicrobial titanium coating; Bio-orthogonal chemistry; Biofilms; Coated Materials, Biocompatible/pharmacology; Humans; Polymers; Prodrug antibiotic; Titanium/pharmacology"
Date
2020-11
Identifier
1873-0191 (Electronic) 0928-4931 (Linking)
Type
Text