1
|
Usala E, Espinosa E, El Arfaoui W, Morcillo-Martín R, Ferrari B, González Z. Antibacterial Aerogels-Based Membranes by Customized Colloidal Functionalization of TEMPO-Oxidized Cellulose Nanofibers Incorporating CuO. Bioengineering (Basel) 2023; 10:1312. [PMID: 38002436 PMCID: PMC10669038 DOI: 10.3390/bioengineering10111312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/03/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
An innovative colloidal approach is proposed here to carry out the customized functionalization of TEMPO-Oxidized Cellulose Nanofibers (CNF) incorporating non-noble inorganic nanoparticles. A heterocoagulation process is applied between the delignified CNF and as-synthetized CuO nanoparticles (CuO NPs) to formulate mixtures which are used in the preparation of aerogels with antibacterial effect, which could be used to manufacture membranes, filters, foams, etc. The involved components of formulated blending, CNF and CuO NPs, were individually obtained by using a biorefinery strategy for agricultural waste valorization, together with an optimized chemical precipitation, assisted by ultrasounds. The optimization of synthesis parameters for CuO NPs has avoided the presence of undesirable species, which usually requires later thermal treatment with associated costs. The aerogels-based structure, obtained by conventional freeze-drying, acted as 3D support for CuO NPs, providing a good dispersion within the cross-linked structure of the nanocellulose and facilitating direct contact of the antibacterial phase against undesirable microorganisms. All samples showed a positive response against Escherichia coli and Staphylococcus aureus. An increase of the antibacterial response of the aerogels, measured by agar disk diffusion test, has been observed with the increase of CuO NPs incorporated, obtaining the width of the antimicrobial "halo" (nwhalo) from 0 to 0.6 and 0.35 for S. aureus and E. coli, respectively. Furthermore, the aerogels have been able to deactivate S. aureus and E. coli in less than 5 h when the antibacterial assays have been analyzed by a broth dilution method. From CNF-50CuO samples, an overlap in the nanoparticle effect produced a decrease of the antimicrobial kinetic.
Collapse
Affiliation(s)
- Elena Usala
- BioPren Group (RNM940), Chemical Engineering Department, Instituto Químico Para la Energía y el Medioambiente (IQUEMA), Faculty of Science, Universidad de Córdoba (UCO), 14014 Córdoba, Spain; (E.U.); (E.E.); (R.M.-M.)
| | - Eduardo Espinosa
- BioPren Group (RNM940), Chemical Engineering Department, Instituto Químico Para la Energía y el Medioambiente (IQUEMA), Faculty of Science, Universidad de Córdoba (UCO), 14014 Córdoba, Spain; (E.U.); (E.E.); (R.M.-M.)
- Unidad Asociada CSIC-UCO, Fabricación Aditiva de Materiales Compuestos Basados en Celulosa Funcionalizada, Obtenida de Residuos de Biomasa, 14014 Córdoba, Spain;
| | - Wasim El Arfaoui
- BioPren Group (RNM940), Chemical Engineering Department, Instituto Químico Para la Energía y el Medioambiente (IQUEMA), Faculty of Science, Universidad de Córdoba (UCO), 14014 Córdoba, Spain; (E.U.); (E.E.); (R.M.-M.)
| | - Ramón Morcillo-Martín
- BioPren Group (RNM940), Chemical Engineering Department, Instituto Químico Para la Energía y el Medioambiente (IQUEMA), Faculty of Science, Universidad de Córdoba (UCO), 14014 Córdoba, Spain; (E.U.); (E.E.); (R.M.-M.)
| | - Begoña Ferrari
- Unidad Asociada CSIC-UCO, Fabricación Aditiva de Materiales Compuestos Basados en Celulosa Funcionalizada, Obtenida de Residuos de Biomasa, 14014 Córdoba, Spain;
- Instituto de Cerámica y Vidrio, Consejo Superior de Investigaciones Científicas (CSIC), Campus de Cantoblanco, c/Kelsen 5, 28049 Madrid, Spain
| | - Zoilo González
- BioPren Group (RNM940), Chemical Engineering Department, Instituto Químico Para la Energía y el Medioambiente (IQUEMA), Faculty of Science, Universidad de Córdoba (UCO), 14014 Córdoba, Spain; (E.U.); (E.E.); (R.M.-M.)
- Unidad Asociada CSIC-UCO, Fabricación Aditiva de Materiales Compuestos Basados en Celulosa Funcionalizada, Obtenida de Residuos de Biomasa, 14014 Córdoba, Spain;
| |
Collapse
|
2
|
Yang Y, Zhou X, Chan YK, Wang Z, Li L, Li J, Liang K, Deng Y. Photo-Activated Nanofibrous Membrane with Self-Rechargeable Antibacterial Function for Stubborn Infected Cutaneous Regeneration. Small 2022; 18:e2105988. [PMID: 35088512 DOI: 10.1002/smll.202105988] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 12/24/2021] [Indexed: 02/05/2023]
Abstract
For quick disinfection treatment, phototherapy, including photothermal therapy and photodynamic therapy, has emerged as a promising alternative to conventional methods. However, the bactericidal effect of phototherapy, which only works upon light, is short-lived. The remaining bacteria in situ may repopulate when the irradiation of light is withdrawn. To address this refractory concern, an antibacterial fibrous membrane consisting of electrospun poly (polycaprolactone) scaffolds and polydopamine (pDA) coated MXene/Ag3 PO4 bioheterojunctions (MX@AgP bio-HJs) is devised and developed. Upon near-infrared (NIR) illumination, the MX@AgP nanoparticle (NP) in nanofibrous electrospun membranes exert the excellent bactericidal effect of phototherapy and release Ag+ ions which stop the remaining bacteria from multiplying in the dark state. When removing NIR light, pDA in situ reduces Ag+ ions to Ag0 NPs to realize the self-rechargeability of Ag+ ions and provides enough Ag+ ions for the second phototherapy. In vivo results show that photoactivated nanofibrous membranes can re-shape an infected wound microenvironment to the regenerative microenvironment through killing bacteria, ceasing bleeding, increasing epithelialization, and collagen deposition on the wound bed, as well as promoting angiogenesis. As predicted, the proposal work offers potential prospects for nanofibrous membranes with NIR-assisted "self-rechargeable" antibacterial properties to treat bacteria-infected full-thickness wounds.
Collapse
Affiliation(s)
- Yingming Yang
- School of Chemical Engineering, West China College of Stomatology, State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, 610065, China.,National Clinical Research Center for Oral Diseases, State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Xiong Zhou
- School of Chemical Engineering, West China College of Stomatology, State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, 610065, China.,Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Yau Kei Chan
- Department of Ophthalmology, The University of Hong Kong, Hong Kong, 999077, China
| | - Ziyou Wang
- School of Chemical Engineering, West China College of Stomatology, State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, 610065, China.,National Clinical Research Center for Oral Diseases, State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Limei Li
- Science and Technology Achievement Incubation Center, Kunming Medical University, Kunming, 650500, China
| | - Jiyao Li
- School of Chemical Engineering, West China College of Stomatology, State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, 610065, China.,National Clinical Research Center for Oral Diseases, State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Kunneng Liang
- School of Chemical Engineering, West China College of Stomatology, State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, 610065, China.,National Clinical Research Center for Oral Diseases, State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Yi Deng
- School of Chemical Engineering, West China College of Stomatology, State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, 610065, China.,State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.,Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, 999077, China
| |
Collapse
|