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Covalent immobilization of hLf1-11 peptide on a titanium surface reduces bacterial adhesion and biofilm formation
Godoy Gallardo, Maria; Mas Moruno, Carlos; Fernandez Calderon, Maria C.; Perez Giraldo, Ciro; Manero Planella, José María; Albericio, Fernando; Gil Mur, Francisco Javier; Rodríguez Rius, Daniel
Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. BIBITE - Biomaterials, Biomecànica i Enginyeria de Teixits
Bacterial infection represents a major cause of implant failure in dentistry. A common approach to overcoming this issue and treating pen-implant infection consists in the use of antibiotics. However, the rise of multidrug-resistant bacteria poses serious concerns to this strategy. A promising alternative is the use of antimicrobial peptides due to their broad-spectrum activity against bacteria and reduced bacterial resistance responses. The aim of the present study was to determine the in vitro antibacterial activity of the human lactoferrin-derived peptide hLf1-11 anchored to titanium surfaces. To this end, titanium samples were functionalized with the hLf1-11 peptide either by silanization methods or physical adsorption. X-ray photoelectron spectroscopy analyses confirmed the successful covalent attachment of the hLf1-11 peptide onto titanium surfaces. Lactate dehydrogenase assay determined that hLf1-11 peptide did not affect fibroblast viability. An outstanding reduction in the adhesion and early stages of biofilm formation of Streptococcus sanguinis and Lactobacillus salivarius was observed on the biofunctionalized surfaces compared to control non-treated samples. Furthermore, samples coated with the hLf1-11 peptide inhibited the early stages of bacterial growth. Thus, this strategy holds great potential to develop antimicrobial biomaterials for dental applications. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria dels materials
Titanium
Peptides
Titanium
Lactoferrin peptide
Biofunctionalization
Bacterial adhesion
Antimicrobial peptide
RAY PHOTOELECTRON-SPECTROSCOPY
ANTIMICROBIAL PEPTIDES
HUMAN LACTOFERRIN
GOLD SURFACES
ESCHERICHIA-COLI
CANDIDA-ALBICANS
CELL-ADHESIVE
IN-VITRO
IMPLANTS
THIOL
Titani
Pèptids
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/publishedVersion
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