dc.contributor.author | Carvalho, Estela O. | |
dc.contributor.author | Rincón Iglesias, Mikel | |
dc.contributor.author | Brito Pereira, Ricardo | |
dc.contributor.author | Lizundia Fernández, Erlantz | |
dc.contributor.author | Fernandes, Margarida M. | |
dc.contributor.author | Lanceros Méndez, Senentxu | |
dc.date.accessioned | 2023-06-29T15:42:44Z | |
dc.date.available | 2023-06-29T15:42:44Z | |
dc.date.issued | 2023-07 | |
dc.identifier.citation | International Journal of Biological Macromolecules 242(3) : (2023) // Article ID 125049 | es_ES |
dc.identifier.issn | 1879-0003 | |
dc.identifier.uri | http://hdl.handle.net/10810/61804 | |
dc.description.abstract | The continuous rising of infections caused by multidrug-resistant pathogens is becoming a global healthcare concern. Developing new bio-based materials with unique chemical and structural features that allow efficient interaction with bacteria is thus important for fighting this phenomenon. To address this issue, we report an antimicrobial biomaterial that results from clustering local facial amphiphilicity from amino-modified cellulose on silk fibroin β-sheets, by simply blending the two components through casting technology. A simple but effective method for creating a membrane that is antibacterial and non-cytotoxic. Amino-modified cellulose nanocrystals (CNC-NH2) were mixed with proteinaceous silk fibroin (SF) which resulted in a material with improved crystallinity, higher β-sheet content, and exposed amino-groups at its surface features, proven by Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS), that does not occur when the components are individually assembled. The resulting material possesses important antibacterial activity inducing >3 CFU log10 reduction of Escherichia coli and Staphylococcus epidermidis, while the pristine membranes show no antibacterial effect. The chemical interactions occurring between SF and CNC-NH2 during casting, exposing the amino moieties at the surface of the material, are proposed as the main reason for this antimicrobial activity. Importantly, the membranes are non-cytotoxic, showing their potential to be used as a new bioinspired material with intrinsic antibacterial activity for biomedical applications. Those may include coatings for medical devices for the control of healthcare-associated infections, with no need for including external antimicrobial agents in the material. | es_ES |
dc.description.sponsorship | This work has been supported by FCT – Fundação para a Ciência e a Tecnologia (FCT) under the scope of the strategic funding of UID/FIS/04650/2020, project PTDC/BTM-MAT/28237/2017 and grants SFRH/BD/145455/2019 (EOC), SFRH/BD/140698/2018 (RBP) and SFRH/BPD/121464/2016 (MMF). The authors also acknowledge funding by Spanish State Research Agency (AEI) and the European Regional Development Fund (ERFD) through the project PID2019-106099RB-C43/AEI/10.13039/501100011033 and from the Basque Government Industry Department under the ELKARTEK program. Finally, the authors thank for the technical and human support provided by SGIker of UPV/EHU. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation | info:eu-repo/grantAgreement/MICINN/ PID2019-106099RB-C43 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | silk fibroin | es_ES |
dc.subject | amine-functionalized cellulose | es_ES |
dc.subject | blends | es_ES |
dc.subject | antibacterial | es_ES |
dc.subject | non-cytotoxic | es_ES |
dc.subject | sustainable material | es_ES |
dc.title | Designing antimicrobial biomembranes via clustering amino-modified cellulose nanocrystals on silk fibroin β-sheets | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/) | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0141813023019438 | es_ES |
dc.identifier.doi | 10.1016/j.ijbiomac.2023.125049 | |
dc.departamentoes | Expresión grafica y proyectos de ingeniería | es_ES |
dc.departamentoeu | Adierazpen grafikoa eta ingeniaritzako proiektuak | es_ES |