A Multifunctional Scaffold for Bone Infection Treatment by Delivery of microRNA Therapeutics Combined With Antimicrobial Nanoparticles
Sadowska JM, Power RN, Genoud KJ, Matheson A, González-Vázquez A, Costard L, Eichholz K, Pitacco P, Hallegouet T, Chen G, Curtin CM, Murphy CM, Cavanagh B, Zhang H, Kelly DJ, Boccaccini AR, O'Brien FJ (2023)
Publication Type: Journal article
Publication year: 2023
Journal
Abstract
Treating bone infections and ensuring bone repair is one of the greatest global challenges of modern orthopedics, made complex by antimicrobial resistance (AMR) risks due to long-term antibiotic treatment and debilitating large bone defects following infected tissue removal. An ideal multi-faceted solution would will eradicate bacterial infection without long-term antibiotic use, simultaneously stimulating osteogenesis and angiogenesis. Here, a multifunctional collagen-based scaffold that addresses these needs by leveraging the potential of antibiotic-free antimicrobial nanoparticles (copper-doped bioactive glass, CuBG) to combat infection without contributing to AMR in conjunction with microRNA-based gene therapy (utilizing an inhibitor of microRNA-138) to stimulate both osteogenesis and angiogenesis, is developed. CuBG scaffolds reduce the attachment of gram-positive bacteria by over 80%, showcasing antimicrobial functionality. The antagomiR-138 nanoparticles induce osteogenesis of human mesenchymal stem cells in vitro and heal a large load-bearing defect in a rat femur when delivered on the scaffold. Combining both promising technologies results in a multifunctional antagomiR-138-activated CuBG scaffold inducing hMSC-mediated osteogenesis and stimulating vasculogenesis in an in vivo chick chorioallantoic membrane model. Overall, this multifunctional scaffold catalyzes killing mechanisms in bacteria while inducing bone repair through osteogenic and angiogenic coupling, making this platform a promising multi-functional strategy for treating and repairing complex bone infections.
Authors with CRIS profile
Huijun Zhang
Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)
Aldo Boccaccini
Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)
Involved external institutions
Ireland (IE)How to cite
APA:
Sadowska, J.M., Power, R.N., Genoud, K.J., Matheson, A., González-Vázquez, A., Costard, L.,... O'Brien, F.J. (2023). A Multifunctional Scaffold for Bone Infection Treatment by Delivery of microRNA Therapeutics Combined With Antimicrobial Nanoparticles. Advanced Materials. https://dx.doi.org/10.1002/adma.202307639
MLA:
Sadowska, Joanna M., et al. "A Multifunctional Scaffold for Bone Infection Treatment by Delivery of microRNA Therapeutics Combined With Antimicrobial Nanoparticles." Advanced Materials (2023).
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