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Zhang Z, Weng B, Hu Z, Si Z, Li L, Yang Z, Cheng Y. Chitosan‑iodine complexes: Preparation, characterization, and antibacterial activity. Int J Biol Macromol 2024; 260:129598. [PMID: 38253142 DOI: 10.1016/j.ijbiomac.2024.129598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 01/15/2024] [Accepted: 01/17/2024] [Indexed: 01/24/2024]
Abstract
Bacterial infections have always been a major threat to public health, and the development of effective antibacterial substances from natural polymers is crucial. 2-Aminoisonicotinic acid (AN) was grafted onto chitosan by 1-ethyl-(3-dimethylaminopropyl)carbodiimide-mediated coupling reactions, and then modified chitosan‑iodine (CSAN-I) complexes were prepared by solvent-assisted grinding. The samples were characterized using ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, proton nuclear magnetic resonance spectroscopy, and X-ray diffraction, confirming that CSAN-I complexes had been successfully prepared. Thermogravimetric (TG) analysis indicated that the chemical modification of chitosan and iodine complexation reduced the thermal stability; X-ray photoelectron spectroscopy (XPS) analysis revealed that 81 % of the iodine in CSAN-I complex was in the form of triiodide ions. The iodine contents of three CSAN-I complexes (CSAN-I-1, CSAN-I-2 and CSAN-I-3) were 1.59 ± 0.22 %, 3.18 ± 0.26 %, and 5.56 ± 0.41 %, respectively. The antibacterial effects were evaluated in vitro, and the results indicated that CSAN-I complexes had strong antibacterial activities against both E. coli and S. aureus. In particular, CSAN-I-3 exhibited the best antibacterial effect. In addition, CSAN-I-3 was nontoxic to L929 cells with good cytocompatibility. Therefore, CSAN-I complexes can be considered as promising candidates for wound management in clinical applications.
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Affiliation(s)
- Zhaoyu Zhang
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China
| | - Boya Weng
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China
| | - Zhang Hu
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China.
| | - Zhenyu Si
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China
| | - Lefan Li
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China
| | - Ziming Yang
- South Subtropical Crop Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, China
| | - Yu Cheng
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China
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Lv H, Liu Y, Lu D, Wang Y. Kartogenin-loaded polyvinyl alcohol/nano-hydroxyapatite composite hydrogel promotes tendon-bone healing in rabbits after anterior cruciate ligament reconstruction. J Biomed Mater Res A 2024; 112:180-192. [PMID: 37694883 DOI: 10.1002/jbm.a.37605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 06/20/2023] [Accepted: 08/22/2023] [Indexed: 09/12/2023]
Abstract
Accumulating evidence supports the role of cartilage tissue engineering in cartilage defect repair, but the biological function has yet to be fully explained. In this work, kartogenin (KGN), an emerging chondroinductive nonprotein small molecule, was incorporated into a composite hydrogel of polyvinyl alcohol/nano-hydroxyapatite (PVA/n-HA) to fabricate an appropriate microenvironment for tendon-bone healing after anterior cruciate ligament (ACL) reconstruction. KGN/PVA/n-HA composite hydrogel scaffolds were prepared by in situ synthesis and physical adsorption, followed by characterization under a scanning electron microscope. The scaffolds were transplanted into healthy New Zealand White (NZW) rabbits. It was confirmed that KGN/PVA/n-HA scaffolds were successfully prepared and exhibited good supporting properties and excellent biocompatibility. Unilateral ACL reconstruction was constructed with tendon autograft in NZW rabbits, and the morphology and diameter of collagen fiber were analyzed. The scaffolds were shown to promote ACL growth and collagen fiber formation. Furthermore, microcomputerized tomography analysis and bone formation histology were performed to detect new bone formation. KGN/PVA/n-HA scaffolds effectively alleviated cartilage damage and prevented the occurrence of osteoarthritis. Meanwhile, ligament-bone healing and bone formation were observed in the presence of KGN/PVA/n-HA scaffolds. In conclusion, these results suggest that the KGN/PVA/n-HA scaffolds can facilitate tendon-bone healing after ACL reconstruction and might be considered novel hydrogel biomaterials in cartilage tissue engineering.
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Affiliation(s)
- Hao Lv
- Jinan Central Hospital, Jinan, People's Republic of China
| | - Yaobo Liu
- Jinan Central Hospital, Jinan, People's Republic of China
| | - Duyi Lu
- Jinan Central Hospital, Jinan, People's Republic of China
| | - Yuanrui Wang
- Jinan Central Hospital, Jinan, People's Republic of China
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Da Silva J, Leal EC, Carvalho E, Silva EA. Innovative Functional Biomaterials as Therapeutic Wound Dressings for Chronic Diabetic Foot Ulcers. Int J Mol Sci 2023; 24:9900. [PMID: 37373045 DOI: 10.3390/ijms24129900] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/19/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
The imbalance of local and systemic factors in individuals with diabetes mellitus (DM) delays, or even interrupts, the highly complex and dynamic process of wound healing, leading to diabetic foot ulceration (DFU) in 15 to 25% of cases. DFU is the leading cause of non-traumatic amputations worldwide, posing a huge threat to the well-being of individuals with DM and the healthcare system. Moreover, despite all the latest efforts, the efficient management of DFUs still remains a clinical challenge, with limited success rates in treating severe infections. Biomaterial-based wound dressings have emerged as a therapeutic strategy with rising potential to handle the tricky macro and micro wound environments of individuals with DM. Indeed, biomaterials have long been related to unique versatility, biocompatibility, biodegradability, hydrophilicity, and wound healing properties, features that make them ideal candidates for therapeutic applications. Furthermore, biomaterials may be used as a local depot of biomolecules with anti-inflammatory, pro-angiogenic, and antimicrobial properties, further promoting adequate wound healing. Accordingly, this review aims to unravel the multiple functional properties of biomaterials as promising wound dressings for chronic wound healing, and to examine how these are currently being evaluated in research and clinical settings as cutting-edge wound dressings for DFU management.
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Affiliation(s)
- Jessica Da Silva
- CNC-Center for Neuroscience and Cell Biology, CIBB-Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
- PDBEB-Ph.D. Programme in Experimental Biology and Biomedicine, University of Coimbra, 3004-504 Coimbra, Portugal
- Institute of Interdisciplinary Research, University of Coimbra, Casa Costa Alemão, Rua Dom Francisco de Lemos, 3030-789 Coimbra, Portugal
- Department of Biomedical Engineering, Genome and Biomedical Sciences Facilities, UC Davis, 451 Health Sciences Dr., Davis, CA 95616, USA
| | - Ermelindo C Leal
- CNC-Center for Neuroscience and Cell Biology, CIBB-Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
- Institute of Interdisciplinary Research, University of Coimbra, Casa Costa Alemão, Rua Dom Francisco de Lemos, 3030-789 Coimbra, Portugal
| | - Eugénia Carvalho
- CNC-Center for Neuroscience and Cell Biology, CIBB-Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
- Institute of Interdisciplinary Research, University of Coimbra, Casa Costa Alemão, Rua Dom Francisco de Lemos, 3030-789 Coimbra, Portugal
| | - Eduardo A Silva
- Department of Biomedical Engineering, Genome and Biomedical Sciences Facilities, UC Davis, 451 Health Sciences Dr., Davis, CA 95616, USA
- Department of Chemistry, Bioscience, and Environmental Engineering, University of Stavanger, Kristine Bonnevies vei 22, 4021 Stavanger, Norway
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Feng Y, Tang F, Li S, Wu D, Liu Q, Li H, Zhang X, Liu Z, Zhang L, Feng H. Mannose-modified erythrocyte membrane-encapsulated chitovanic nanoparticles as a DNA vaccine carrier against reticuloendothelial tissue hyperplasia virus. Front Immunol 2023; 13:1066268. [PMID: 36776397 PMCID: PMC9910308 DOI: 10.3389/fimmu.2022.1066268] [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: 10/10/2022] [Accepted: 12/12/2022] [Indexed: 01/05/2023] Open
Abstract
Introduction The erythrocyte membranes used in nanovaccines include high membrane stability, long circulation life, adaptability and extremely good bio compatibility. Nanoparticles encapsulated by erythrocyte membranes are widely used as ideal drug delivery vehicles because of their high drug loading, long circulation time, and excellent biocompatibility. The mannose modification of delivery materials can help target mannose receptors (MRs) to deliver antigens to antigen-presenting cells (APCs). Methods In this study, the antigen gene gp90 of avian reticuloendotheliosis virus (REV) was encapsulated with carboxymethyl chitosan (CS) to obtain CSgp90 nanoparticles, which were coated with mannose-modied fowl erythrocyte membranes to yield CS-gp90@M-M nanoparticles. The physicochemical characterization and immune response of the CS-gp90@M-M nanoparticles were investigated in vitro and in vivo. Results CS-gp90@M-M nanoparticles were rapidly phagocytized in vitro by macrophages to induce the production of cytokines and nitric oxide. In vivo, CS-gp90@M-M nanoparticles increased cytokine levels, the CD4+/8+ ratio, REV-specific antibodies in the peripheral blood of chicks, and the mRNA levels of immune-related genes in the spleen and bursa of immunized chicks. CS-gp90@M-M nanoparticles could be targeted to lymphoid organs to prolong the retention time of the nanoparticles at the injection site and lymphatic organs, leading to a strong, sustained immune response. Moreover, the CS-gp90@M-M nano-vaccine showed a lasting immunoprotective effect and improved the body weight of chicks after the challenge. Conclusion Overall, CS-gp90@M-M nanoparticles can be used in vaccine designs as an effective delivery carrier with immune response-enhancing effects.
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Affiliation(s)
- Yangyang Feng
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu, China,Key Laboratory of Ministry of Education and Sichuan Province for Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Southwest-Minzu University, Chengdu, China
| | - Feng Tang
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu, China,Key Laboratory of Ministry of Education and Sichuan Province for Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Southwest-Minzu University, Chengdu, China
| | - Sheng Li
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu, China,Key Laboratory of Ministry of Education and Sichuan Province for Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Southwest-Minzu University, Chengdu, China
| | - Daiyan Wu
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu, China,Key Laboratory of Ministry of Education and Sichuan Province for Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Southwest-Minzu University, Chengdu, China
| | - Qianqian Liu
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu, China,Key Laboratory of Ministry of Education and Sichuan Province for Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Southwest-Minzu University, Chengdu, China
| | - Hangyu Li
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu, China,Key Laboratory of Ministry of Education and Sichuan Province for Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Southwest-Minzu University, Chengdu, China
| | - Xinnan Zhang
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu, China,Key Laboratory of Ministry of Education and Sichuan Province for Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Southwest-Minzu University, Chengdu, China
| | - Ziwei Liu
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu, China,Key Laboratory of Ministry of Education and Sichuan Province for Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Southwest-Minzu University, Chengdu, China
| | - Linzi Zhang
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu, China,Key Laboratory of Ministry of Education and Sichuan Province for Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Southwest-Minzu University, Chengdu, China
| | - Haibo Feng
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu, China,Key Laboratory of Ministry of Education and Sichuan Province for Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Southwest-Minzu University, Chengdu, China,*Correspondence: Haibo Feng,
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Li Q, Chang B, Dong H, Liu X. Functional microspheres for tissue regeneration. Bioact Mater 2022; 25:485-499. [PMID: 37056261 PMCID: PMC10087113 DOI: 10.1016/j.bioactmat.2022.07.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 07/13/2022] [Accepted: 07/26/2022] [Indexed: 11/02/2022] Open
Abstract
As a new type of injectable biomaterials, functional microspheres have attracted increasing attention in tissue regeneration because they possess some advantageous properties compared to other biomaterials, including hydrogels. A variety of bio-inspired microspheres with unique structures and properties have been developed as cellular carriers and drug delivery vehicles in recent years. In this review, we provide a comprehensive summary of the progress of functional and biodegradable microspheres that have been used for tissue regeneration over the last two decades. First, we briefly introduce the biomaterials and general methods for microsphere fabrication. Next, we focus on the newly developed technologies for preparing functional microspheres, including macroporous microspheres, nanofibrous microspheres, hollow microspheres, core-shell structured microspheres, and surface-modified functional microspheres. After that, we discuss the application of functional microspheres for tissue regeneration, specifically for bone, cartilage, dental, neural, cardiac, and skin tissue regeneration. Last, we present our perspectives and future directions of functional microspheres as injectable carriers for the future advancement of tissue regeneration.
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