Affiliation:
1. Centre for Biomedical Technologies Queensland University of Technology 60 Musk Avenue Kelvin Grove 4059 Queensland Australia
2. Phil and Penny Knight Campus for Accelerating Scientific Impact University of Oregon 1505 Franklin Blvd Eugene 97403 OR USA
Abstract
AbstractIt is important to consider mechanical, biological, and antibacterial properties of scaffolds when used for tissue engineering applications. This study presents a method to create complex “wavy” architecture polycaprolactone (PCL) scaffolds toward the development of tissue engineered ligament and tendon tissue substitutes, fabricated using melt electrowriting (MEW) and loaded with vancomycin (5, 10, and 25% w/w). Scaffolds are characterized for both mechanical and biological properties. Loading PCL scaffolds with vancomycin with modified solvent evaporation technique achieves a high loading efficiency of maximum 18% w/w and high encapsulation efficiency with over 89%. Vancomycin loaded PCL scaffolds with all three doses (5, 10, and 25% w/w) display antibacterial activity against Gram‐positive Staphylococcus aureus (S. aureus) up to 14 days of release. Initial burst followed by a sustained release is observed on all three vancomycin loaded scaffolds for up to 28 days. Importantly, in addition to antibacterial properties, vancomycin‐loaded PCL scaffolds also display improved mechanical properties compared to traditional crosshatch design MEW scaffolds and are noncytotoxic at all concentrations as demonstrated by live‐dead staining, cell attachment and proliferation assays indicating its potential as an effective treatment option for tissue regeneration in rotator cuff injuries or other tissues undergoing tensile biomechanical loading.
Subject
Materials Chemistry,Polymers and Plastics,Organic Chemistry,General Chemical Engineering
Cited by
1 articles.
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