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Raut MP, Asare E, Syed Mohamed SMD, Amadi EN, Roy I. Bacterial Cellulose-Based Blends and Composites: Versatile Biomaterials for Tissue Engineering Applications. Int J Mol Sci 2023; 24:986. [PMID: 36674505 PMCID: PMC9865793 DOI: 10.3390/ijms24020986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/19/2022] [Accepted: 12/22/2022] [Indexed: 01/06/2023] Open
Abstract
Cellulose of bacterial origin, known as bacterial cellulose (BC), is one of the most versatile biomaterials that has a huge potential in tissue engineering due to its favourable mechanical properties, high hydrophilicity, crystallinity, and purity. Additional properties such as porous nano-fibrillar 3D structure and a high degree of polymerisation of BC mimic the properties of the native extracellular matrix (ECM), making it an excellent material for the fabrication of composite scaffolds suitable for cell growth and tissue development. Recently, the fabrication of BC-based scaffolds, including composites and blends with nanomaterials, and other biocompatible polymers has received particular attention owing to their desirable properties for tissue engineering. These have proven to be promising advanced materials in hard and soft tissue engineering. This review presents the latest state-of-the-art modified/functionalised BC-based composites and blends as advanced materials in tissue engineering. Their applicability as an ideal biomaterial in targeted tissue repair including bone, cartilage, vascular, skin, nerve, and cardiac tissue has been discussed. Additionally, this review briefly summarises the latest updates on the production strategies and characterisation of BC and its composites and blends. Finally, the challenges in the future development and the direction of future research are also discussed.
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Affiliation(s)
| | | | | | | | - Ipsita Roy
- Department of Materials Science and Engineering, Faculty of Engineering, University of Sheffield, Sheffield S3 7HQ, UK
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Triple-Networked Hybrid Hydrogels Reinforced with Montmorillonite Clay and Graphene Nanoplatelets for Soft and Hard Tissue Regeneration. Int J Mol Sci 2022; 23:ijms232214158. [PMID: 36430637 PMCID: PMC9698198 DOI: 10.3390/ijms232214158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 10/27/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022] Open
Abstract
Hydrogel is a three-dimensional (3D) soft and highly hydrophilic, polymeric network that can swell in water and imbibe a high amount of water or biological fluids. Hydrogels have been used widely in various biomedical applications. Hydrogel may provide a fluidic tissue-like 3D microenvironment by maintaining the original network for tissue engineering. However, their low mechanical performances limit their broad applicability in various functional tissues. This property causes substantial challenges in designing and preparing strong hydrogel networks. Therefore, we report the triple-networked hybrid hydrogel network with enhanced mechanical properties by incorporating dual-crosslinking and nanofillers (e.g., montmorillonite (MMT), graphene nanoplatelets (GNPs)). In this study, we prepared hybrid hydrogels composed of polyacrylamide, poly (vinyl alcohol), sodium alginate, MMT, and MMT/GNPs through dynamic crosslinking. The freeze-dried hybrid hydrogels showed good 3D porous architecture. The results exhibited a magnificent porous structure, interconnected pore-network surface morphology, enhanced mechanical properties, and cellular activity of hybrid hydrogels.
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Liu X, Tian S, Xu S, Lu W, Zhong C, Long Y, Ma Y, Yang K, Zhang L, Yang J. A pressure-resistant zwitterionic skin sensor for domestic real-time monitoring and pro-healing of pressure injury. Biosens Bioelectron 2022; 214:114528. [PMID: 35816848 DOI: 10.1016/j.bios.2022.114528] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 06/08/2022] [Accepted: 06/29/2022] [Indexed: 11/15/2022]
Abstract
Pressure injury (PI) is a hard-to-heal wound to patients with the limited mobility, especially paralyzed or elderly persons. These patients also commonly suffer from sensation loss or dementia that is unable to indicate symptoms in time, resulting in missing the "golden period" for treatment. Therefore, it is highly required to domestic continously real-time monitoring as well as promoting wound healing of PI. However, no existing device has realized these functions for PI. Herein, we prepare a zwitterionic skin sensor that enables pro-healing as well as domestic real-time monitoring the multi-indicators of PI. To apply for a PI dressing that requires to tolerate patient body weight, organosilicon nanoparticles (OSNPs) are designed as crosslinks in the zwitterionic conductive hydrogel (CH-OSNP), which exhibits pressure-resistant properties (99.81% compression to recovery) as well as anti-bacterial adhesion. Moreover, the CH-OSNP-based skin sensor is developed, and the resultant sensor can be sensitive to stress stimuli even under a long-term constant heavy load, which stimulates the pressure of a PI person lying down. In vivo results show that this sensor can not only promote PI healing, but also continuously monitor and distinguish multiple information, such as exudate, swelling, and infection, to prevent PI from being worsen. This work provides a domestic feasible device to cure and monitor the PI of patients.
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Affiliation(s)
- Xinmeng Liu
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China
| | - Shu Tian
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China
| | - Sijia Xu
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China
| | - Wenyi Lu
- Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou City, Shandong Province, 256606, China
| | - Cheng Zhong
- Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou City, Shandong Province, 256606, China
| | - You Long
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China
| | - Yiming Ma
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China
| | - Kai Yang
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China
| | - Lei Zhang
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China
| | - Jing Yang
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China.
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Hu L, Zou L, Liu Q, Geng Y, Xu G, Chen L, Pan P, Chen J. Construction of chitosan-based asymmetric antioxidant and anti-inflammatory repair film for acceleration of wound healing. Int J Biol Macromol 2022; 215:377-386. [PMID: 35728636 DOI: 10.1016/j.ijbiomac.2022.06.103] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 06/01/2022] [Accepted: 06/12/2022] [Indexed: 11/30/2022]
Abstract
Oxidative stress damage caused by free radicals around the moist microenvironment of wound has been a clinical challenge in skin tissue healing. Here, a novel chitosan-based bioinspired asymmetric wound repair composite (BAWRC) film was designed by facilitated endogenous tissue engineering strategy through layer-by-layer self-assembly technology for accelerated wound healing. The asymmetric characteristics were skillfully reflected by two different functional layers: hydrophilic chitosan (CS)/silk fibroin (SF) repair layer, and a hydrophobic bacteriostatic tea tree oil (TTO) layer with a rough surface. Simultaneously, sodium ascorbate (SA)-entrapped poly (lactic-co-glycolic acid) (PLGA) microspheres are distributed homogeneously in the hydrophilic layer to induce antioxidant response for skin repair. The distinctive asymmetric structure of BAWRC film endows it with synergistic effects, i.e., protects against the risk of infection from the external environment and facilitates deep skin wound healing. Results show that the minimum inhibition and bactericidal concentration of the BAWRC film were 1.25 and 6.25 mg/mL, respectively, demonstrating good antibacterial properties. The content of biofilm formation was significantly reduced when the concentration of TTO exceeds 5 mg/mL, indicating TTO shows a positive effect on bacteriostasis. In addition, the DPPH rates of BAWRC film were up to 64.7 % after incubation for 12 h, which was ascribed to that the release of SA and TTO as a natural product could accelerate free radical scavenging. The BAWRC film exhibited excellent biocompatibility, and good antibacterial capacity, enhancing adhesion and proliferation of the NIH3T3 cell in vitro, further facilitating the healing of a rat full-thickness skin wounds model. Herein, this versatile asymmetric film possesses great potential for clinical management of wound healing and related soft tissue regeneration.
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Affiliation(s)
- Le Hu
- Marine College, Shandong University, Weihai 264209, China
| | - Lin Zou
- Institute of Biomedical and Pharmaceutical Technology, Fuzhou University, Fuzhou 350002, China
| | - Qing Liu
- Marine College, Shandong University, Weihai 264209, China
| | - Yusheng Geng
- Institute of Biomedical and Pharmaceutical Technology, Fuzhou University, Fuzhou 350002, China
| | - Gan Xu
- Institute of Biomedical and Pharmaceutical Technology, Fuzhou University, Fuzhou 350002, China
| | - Li Chen
- Institute of Biomedical and Pharmaceutical Technology, Fuzhou University, Fuzhou 350002, China
| | - Panpan Pan
- Marine College, Shandong University, Weihai 264209, China; Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China.
| | - Jingdi Chen
- Marine College, Shandong University, Weihai 264209, China.
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