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Huang TY, Wang YW, Liao HX, Su WT. Sprayable hydroxypropyl chitin/collagen extract of Ampelopsis brevipedunculata hydrogel accelerates wound healing. J Wound Care 2024; 33:S10-S23. [PMID: 38348864 DOI: 10.12968/jowc.2024.33.sup2.s10] [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] [Indexed: 02/15/2024]
Abstract
OBJECTIVE Keeping a wound moist can allow effective and rapid healing, and it can control the formation of scabs, thereby allowing cell proliferation and epithelial formation. When regularly changing a dressing, thermosensitive hydrogel as a moist dressing does not cause a secondary wound from adhesion. The main aim of this study was to evaluate the effect of a new sprayable thermosensitive hydrogel on wound healing. METHOD The hydrophobic N-acetyl group of chitin was removed by microwave reaction with lye until the degree of acetylation was 60%, followed by reaction with propylene oxide to obtain hydroxypropyl chitin (HPCH) with a degree of substitution of 40%. After mixing HPCH with fish scale collagen (FSC), a thermosensitive hydrogel with a gel temperature of 26.5°C was obtained. Ampelopsis brevipedunculata extracts (ABE), which have been found to accelerate wound repair and improve healing, were added. HPCH/FSC is not toxic to the mouse L929 cell line and forms a hydrogel at body surface temperature. It can be easily sprayed on a wound. The HPCH/FSC has a three-dimensional network porous structure with a swelling ratio of 10.95:1 and a water vapour transmission rate of 2386.03±228.87g/m2/day; it can facilitate the penetration of water and air, and promote absorption of wound exudate. Wound repair was performed on five Sprague-Dawley rats. Each rat had three wounds, which were treated with medical gauze, HPCH/FSC and HPCH/FSC/ABE, respectively. RESULTS The wounds in the HPCH/FSC/ABE group recovered the fastest in vivo, the mature wound site was smoother, the re-epithelialisation was even and thicker, and the angiogenesis developed rapidly to the mature stage. CONCLUSION In this study, HPCH/FSC/ABE thermosensitive hydrogel was shown to effectively accelerate wound healing and was convenient for practical application.
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Affiliation(s)
- Te-Yang Huang
- Department of Orthopedic Surgery Mackay Memorial Hospital, Taipei, Taiwan
| | - Yi-Wen Wang
- Department of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan
| | - Hui-Xiang Liao
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, Taiwan
| | - Wen-Ta Su
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, Taiwan
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Yu P, Duan L, Yan Z, Li J, Cai DZ. RADA-16-based Self-assembled Peptide Nanofiber Scaffolds Loaded with TGF-β1 Enhance the Chondrogenic Differentiation Potential of BMSCs In vitro. Curr Stem Cell Res Ther 2024; 19:257-266. [PMID: 36927429 DOI: 10.2174/1574888x18666230316112847] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/03/2023] [Accepted: 02/10/2023] [Indexed: 03/18/2023]
Abstract
OBJECTIVE At present, cartilage repair does not offer ideal efficacy. Fortunately, recent studies have claimed that RADA-16 peptide is an attractive therapeutic strategy for repairing cartilage defects. Therefore, this study tried to explore the effect of RADA-16 loaded with transforming growth factor-beta (TGF-β) 1 on cartilage differentiation of bone marrow mesenchymal stem cells (BMSCs). METHODS First, the RADA-16 peptide was synthesized by solid phase peptide, and a well-defined hydrogel was formed by supramolecular peptide self-assembly. Then, TGF-β1 (loading concentration of 10 ng/mL) was loaded into RADA-16, with scanning electron microscopy to observe the morphology of the TGF-β1/RADA-16 hydrogel and detect its related properties. Next, BMSCs were isolated from bone marrow samples and identified. TGF-β1/RADA-16 was co-cultured with L929, BMSCs, and C28/I2 cells, respectively, and the survival and proliferation ability of the cells was determined by live/dead cell staining and MTT assay. Chondrogenic differentiation and sGAG production of BMSCs were determined by Alcian blue staining and Blyscan assay, the expression of cartilage-associated genes by qRT-PCR, and the levels of inflammatory factors by ELISA. As for mechanism investigation, the Smad and ERK/MAPK signaling pathways were detected by western blot. RESULTS RADA-16 hydrogel exhibited a well-distributed and interconnected porous surface structure, with a loading rate of 91.9% for TGF-β1. The TGF-β1/RADA-16 hydrogel had good release and degradation properties, and had no negative effect on the survival and proliferation ability of BMSCs, L929, and C28/I2 cells. Importantly, TGF-β1/RADA-16 hydrogel significantly accelerated chondrogenic differentiation and sGAG generation in BMSCs, and decreased pro-inflammatory factor production. In addition, the hydrogel also significantly activated the Smad and ERK/MAPK pathways of BMSCs. CONCLUSION RADA-16 loaded with TGF-β1 has good biological properties and can enhance the chondrogenic differentiation ability of BMSCs.
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Affiliation(s)
- Peng Yu
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, The Third School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, China
- Department of Joint Surgery, The First Affiliated Hospital of Hainan Medical University. Haikou, 570102, China
| | - Lian Duan
- Department of Joint Surgery, The First Affiliated Hospital of Hainan Medical University. Haikou, 570102, China
| | - Zhen Yan
- Department of Joint Surgery, The First Affiliated Hospital of Hainan Medical University. Haikou, 570102, China
| | - Jun Li
- Department of Joint Surgery, The First Affiliated Hospital of Hainan Medical University. Haikou, 570102, China
| | - Dao-Zhang Cai
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, The Third School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, China
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Zhang Y, Luo Y, Zhao J, Zheng W, Zhan J, Zheng H, Luo F. Emerging delivery systems based on aqueous two-phase systems: A review. Acta Pharm Sin B 2024; 14:110-132. [PMID: 38239237 PMCID: PMC10792979 DOI: 10.1016/j.apsb.2023.08.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 07/24/2023] [Accepted: 07/28/2023] [Indexed: 01/22/2024] Open
Abstract
The aqueous two-phase system (ATPS) is an all-aqueous system fabricated from two immiscible aqueous phases. It is spontaneously assembled through physical liquid-liquid phase separation (LLPS) and can create suitable templates like the multicompartment of the intracellular environment. Delicate structures containing multiple compartments make it possible to endow materials with advanced functions. Due to the properties of ATPSs, ATPS-based drug delivery systems exhibit excellent biocompatibility, extraordinary loading efficiency, and intelligently controlled content release, which are particularly advantageous for delivering drugs in vivo . Therefore, we will systematically review and evaluate ATPSs as an ideal drug delivery system. Based on the basic mechanisms and influencing factors in forming ATPSs, the transformation of ATPSs into valuable biomaterials is described. Afterward, we concentrate on the most recent cutting-edge research on ATPS-based delivery systems. Finally, the potential for further collaborations between ATPS-based drug-carrying biomaterials and disease diagnosis and treatment is also explored.
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Affiliation(s)
- Yaowen Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yankun Luo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Jingqi Zhao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Wenzhuo Zheng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Jun Zhan
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu 610041, China
| | - Huaping Zheng
- Department of Dermatology, Rare Diseases Center, Institutes for Systems Genetics, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Feng Luo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Prosthodontics, West China School of Stomatology, Sichuan University, Chengdu 610041, China
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Chi J, Lu M, Wang S, Xu T, Ju R, Liu C, Zhang Z, Jiang Z, Han B. Injectable hydrogels derived from marine polysaccharides as cell carriers for large corneal epithelial defects. Int J Biol Macromol 2023; 253:127084. [PMID: 37769782 DOI: 10.1016/j.ijbiomac.2023.127084] [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: 11/27/2022] [Revised: 09/12/2023] [Accepted: 09/23/2023] [Indexed: 10/03/2023]
Abstract
Injectable hydrogels have been employed for sutureless repair of corneal epithelial defects, which can perfectly fit the defect sites and minimize the associated discomfort. However, numerous hydrogels are ineffective in treating large corneal epithelial defects and still suffer from poor biocompatibility or weak applicability when used as cell carriers. Herein, hydroxypropyl chitin/carboxymethyl chitosan (HPCT/CMCS) temperature-sensitive hydrogels are fabricated, and their physicochemical properties and suitability for corneal epithelial repair are investigated. The results demonstrate that HPCT/CMCS hydrogels have excellent temperature sensitivity between 20 and 25 °C and a transparency of over 80 %. Besides, HPCT/CMCS hydrogels can promote cell proliferation and facilitate cell migration of primary rabbit corneal epithelial cells (CEpCs). A rabbit large corneal epithelial defect model (6 mm) is established, and CEpCs are transplanted into defect sites by HPCT/CMCS hydrogels. The results suggest that HPCT/CMCS/CEpCs significantly enhance the repair of large corneal epithelial defects with a healing rate of 99.6 % on day 8, while reducing inflammatory responses and scarring formation. Furthermore, HPCT/CMCS/CEpCs can contribute to the reconstruction of damaged tissues and the recovery of functional capacities. Overall, HPCT/CMCS hydrogels may be a feasible corneal cell carrier material and can provide an alternative approach to large corneal epithelial defects.
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Affiliation(s)
- Jinhua Chi
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Minxin Lu
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Shuo Wang
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Tianjiao Xu
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Ruibao Ju
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Chenqi Liu
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Zhenguo Zhang
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Zhen Jiang
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Baoqin Han
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266235, PR China.
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Zhu Y, Chen J, Liu H, Zhang W. Photo-cross-linked Hydrogels for Cartilage and Osteochondral Repair. ACS Biomater Sci Eng 2023; 9:6567-6585. [PMID: 37956022 DOI: 10.1021/acsbiomaterials.3c01132] [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] [Indexed: 11/15/2023]
Abstract
Photo-cross-linked hydrogels, which respond to light and induce structural or morphological transitions, form a microenvironment that mimics the extracellular matrix of native tissue. In the last decades, photo-cross-linked hydrogels have been widely used in cartilage and osteochondral tissue engineering due to their good biocompatibility, ease of fabrication, rapid in situ gel-forming ability, and tunable mechanical and degradable properties. In this review, we systemically summarize the different types and physicochemical properties of photo-cross-linked hydrogels (including the materials and photoinitiators) and explore the biological properties modulated through the incorporation of additives, including cells, biomolecules, genes, and nanomaterials, into photo-cross-linked hydrogels. Subsequently, we compile the applications of photo-cross-linked hydrogels with a specific focus on cartilage and osteochondral repair. Finally, current limitations and future perspectives of photo-cross-linked hydrogels are also discussed.
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Affiliation(s)
- Yue Zhu
- School of Medicine, Southeast University, 210009 Nanjing, China
| | - Jialin Chen
- School of Medicine, Southeast University, 210009 Nanjing, China
- Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, 210096 Nanjing, China
- China Orthopedic Regenerative Medicine Group (CORMed), 310058 Hangzhou, China
| | - Haoyang Liu
- School of Medicine, Southeast University, 210009 Nanjing, China
| | - Wei Zhang
- School of Medicine, Southeast University, 210009 Nanjing, China
- Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, 210096 Nanjing, China
- China Orthopedic Regenerative Medicine Group (CORMed), 310058 Hangzhou, China
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6
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Huang L, Cai M, Qiao Q, Li T, Chen J, Jiang X. Water soluble AIEgen-based thermosensitive and antibacterial hydroxypropyl chitin hydrogels for non-invasive visualization and wound healing. Carbohydr Polym 2023; 319:121186. [PMID: 37567696 DOI: 10.1016/j.carbpol.2023.121186] [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: 05/12/2023] [Revised: 06/27/2023] [Accepted: 07/07/2023] [Indexed: 08/13/2023]
Abstract
Antimicrobial hydrogels containing antibacterial agents have been extensively studied for postoperative infections, wound repair and tissue engineering. However, the abuse of antibiotics has led to the enhancement of bacterial resistance and traditional antibacterial agents are losing their effect. Therefore, fabricating novel and efficient antibacterial hydrogels with enhanced photodynamic antimicrobial activity, good biocompatibility, biodegradability and injectability are highly desirable for clinical application. Herein, a fluorescent and sunlight-triggered synergetic antibacterial thermosensitive hydrogel (red fluorescent hydroxypropyl chitin, redFHPCH) is constructed based on a new water-soluble AIEgen (aggregation-induced emission fluorogen) covalently introduced in hydroxypropyl chitin for non-invasive visualization and wound healing. The thermosensitive redFHPCH solution showing good injectability with fluidity at low temperature was completely transformed into hydrogel under body temperature. The in vitro and in vivo visualization and reactive oxygen species (ROS) generation of the redFHPCH hydrogel are demonstrated clearly because of its excellent AIE fluorescence imaging quality in the red/near-infrared region and superefficient ROS production by sunlight. Moreover, the redFHPCH hydrogel with positively charged quaternary ammonium groups displays a strong synergistic antibacterial effect for healing of infected wound under sunlight irradiation. We believe that this novel strategy can open a new door to explore diversified and multifunctional hydrogels for clinical application.
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Affiliation(s)
- Long Huang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, 299 Bayi Road, Wuhan 430072, China.
| | - Mingzhen Cai
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, 299 Bayi Road, Wuhan 430072, China.
| | - Qianqian Qiao
- Department of Anesthesiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan 430060, PR China
| | - Taotao Li
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, 299 Bayi Road, Wuhan 430072, China
| | - Junyu Chen
- Key Laboratory of Analytical Chemistry for Living Biosystems Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Xulin Jiang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, 299 Bayi Road, Wuhan 430072, China.
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7
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Qu R, Song X, Wang Y, Zhao Y, Fu X. Hydroxyapatite cross-linked in situ polyvinyl alcohol hydrogel for bionic calcified cartilage layer. Colloids Surf B Biointerfaces 2023; 230:113510. [PMID: 37574614 DOI: 10.1016/j.colsurfb.2023.113510] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/25/2023] [Accepted: 08/05/2023] [Indexed: 08/15/2023]
Abstract
Many tissue engineering constructs have been investigated for repairing the calcified cartilage layer in the recent years, but engineering a consistent and stable interface to facilitate a graft-to-bone fixation remains a concern. In the work, hydroxyapatite (HA) is modified by diisocyanate (HDI) and integrated with polyvinyl alcohol (PVA) to prepare the hydrogel. The IR shows that HDI is grafted onto HA and helps HA to cross-link in situ in the PVA gel network. When the mass ratio of HA/PVA is 3.5 wt%, the swelling rate in the PBS of different pH reduced with time prolong, and the hydrogel takes on good swelling resistance. The tensile strength and toughness are 1890 KPa and 264 KJ/m-3, respectively, while the compression strength reaches 1125 KPa at compressive strain of 60%. The hydrogel not only is well durable via continuous 100 rounds of compression-recovery, but also has excellent bioactivity. The work will provide a platform for developing multifunctional soft tissue scaffold.
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Affiliation(s)
- Rui Qu
- School of Chemical Engineering, Changchun University of Technology, China
| | - Xiaofeng Song
- School of Chemical Engineering, Changchun University of Technology, China; Jiangxi Center of Modern Apparel Engineering and Technology, Jiangxi Institute of Fashion Technology, China.
| | - Yanhe Wang
- Jiangxi Center of Modern Apparel Engineering and Technology, Jiangxi Institute of Fashion Technology, China
| | - Yuze Zhao
- School of Chemical Engineering, Changchun University of Technology, China
| | - Xinyu Fu
- School of Chemical Engineering, Changchun University of Technology, China
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8
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Wang X, Ou Y, Wang X, Yuan L, He N, Li Z, Luo F, Li J, Tan H. A biodegradable injectable fluorescent polyurethane-oxidized dextran hydrogel for non-invasive monitoring. J Mater Chem B 2023; 11:8506-8518. [PMID: 37603338 DOI: 10.1039/d3tb01488f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Hydrogels have been extensively used in the field of biomedical engineering. In order to achieve non-invasive and real-time visualization of the in vivo status of hydrogels, we designed a fluorescent polyurethane-oxidized dextran (PU-OD) hydrogel with good injectability and self-healing properties, which was cross-linked from a tetraphenyl ethylene (TPE)-containing fluorescent polyurethane emulsion with oxidized dextran by dynamic acylhydrazone bonds. The hydrogel can be used as a visual platform for drug delivery as well as monitoring its own degradation. The network structure of the hydrogel gave it drug-loading capability, and the acylhydrazone bond enabled its pH-responsive drug release. Meanwhile, the PU-OD hydrogel could undergo fluorescence resonance transfer with doxorubicin hydrochloride, showing its potential application in monitoring drug release. In addition, fluorometric and weighing methods were performed to monitor the degradation behavior of the hydrogels in vivo and in vitro, respectively, showing that the non-invasive fluorometric method can be consistent with the invasive weighing method. This work highlights that the introduction of aggregation-induced emission molecules into polyurethanes provides a visual platform that allows for non-invasive monitoring of the material without affecting its own function, which is convenient and less damaging to the body or animals. Consequently, it possesses excellent and promising potential in biomedical materials technologies.
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Affiliation(s)
- Xiao Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Yangcen Ou
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Xiaofei Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Lei Yuan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Nan He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Zhen Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Feng Luo
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Jiehua Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Hong Tan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
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9
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Lu HT, Lin C, Wang YJ, Hsu FY, Hsu JT, Tsai ML, Mi FL. Sequential deacetylation/self-gelling chitin hydrogels and scaffolds functionalized with fucoidan for enhanced BMP-2 loading and sustained release. Carbohydr Polym 2023; 315:121002. [PMID: 37230625 DOI: 10.1016/j.carbpol.2023.121002] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 04/22/2023] [Accepted: 05/07/2023] [Indexed: 05/27/2023]
Abstract
Bone morphogenetic protein 2 (BMP-2) is a potent osteoinductive factor that promotes bone formation. A major obstacle to the clinical application of BMP-2 is its inherent instability and complications caused by its rapid release from implants. Chitin based materials have excellent biocompatibility and mechanical properties, making them ideal for bone tissue engineering applications. In this study, a simple and easy method was developed to spontaneously form deacetylated β-chitin (DAC-β-chitin) gels at room temperature through a sequential deacetylation/self-gelation process. The structural transformation of β-chitin to DAC-β-chitin leads to the formation of self-gelling DAC-β-chitin, from which hydrogels and scaffolds were prepared. Gelatin (GLT) accelerated the self-gelation of DAC-β-chitin and increased the pore size and porosity of the DAC-β-chitin scaffold. The DAC-β-chitin scaffolds were then functionalized with a BMP-2-binding sulfate polysaccharide, fucoidan (FD). Compared with β-chitin scaffolds, FD-functionalized DAC-β-chitin scaffolds showed higher BMP-2 loading capacity and more sustainable release of BMP-2, and thus had better osteogenic activity for bone regeneration.
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Affiliation(s)
- Hsien-Tsung Lu
- Department of Orthopedics, School of Medicine, College of Medicine, Taipei Medical University, Taipei City 11031, Taiwan, ROC; Department of Orthopedics, Taipei Medical University Hospital, Taipei City 11031, Taiwan, ROC
| | - Chi Lin
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei City 11031, Taiwan, ROC
| | - Yi-Ju Wang
- Department of Food Science, National Taiwan Ocean University, Keelung 20224, Taiwan, ROC
| | - Fang-Yu Hsu
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei City 11031, Taiwan, ROC
| | - Ju-Ting Hsu
- Department of Food Science, National Taiwan Ocean University, Keelung 20224, Taiwan, ROC
| | - Min-Lang Tsai
- Department of Food Science, National Taiwan Ocean University, Keelung 20224, Taiwan, ROC.
| | - Fwu-Long Mi
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei City 11031, Taiwan, ROC; Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei City 11031, Taiwan, ROC; Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei City 11031, Taiwan, ROC.
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10
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Mondal AK, Uddin MT, Sujan SMA, Tang Z, Alemu D, Begum HA, Li J, Huang F, Ni Y. Preparation of lignin-based hydrogels, their properties and applications. Int J Biol Macromol 2023; 245:125580. [PMID: 37379941 DOI: 10.1016/j.ijbiomac.2023.125580] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/12/2023] [Accepted: 06/24/2023] [Indexed: 06/30/2023]
Abstract
Polymers obtained from biomass are a concerning alternative to petro-based polymers because of their low cost of manufacturing, biocompatibility, ecofriendly and biodegradability. Lignin as the second richest and the only polyaromatics bio-polymer in plant which has been most studied for the numerous applications in different fields. But, in the past decade, the exploitation of lignin for the preparation of new smart materials with improved properties has been broadly sought, because lignin valorization plays one of the primary challenging issues of the pulp and paper industry and lignocellulosic biorefinery. Although, well suited chemical structure of lignin comprises of many functional hydrophilic and active groups, such as phenolic hydroxyls, carboxyls and methoxyls, which provides a great potential to be applied in the preparation of biodegradable hydrogels. In this review, lignin hydrogel is covered with preparation strategies, properties and applications. This review reports some important properties, such as mechanical, adhesive, self-healing, conductive, antibacterial and antifreezing properties were then discussed. Furthermore, herein also reviewed the current applications of lignin hydrogel, including dye adsorption, smart materials for stimuli sensitive, wearable electronics for biomedical applications and flexible supercapacitors. Overall, this review covers recent progresses regarding lignin-based hydrogel and constitutes a timely review of this promising material.
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Affiliation(s)
- Ajoy Kanti Mondal
- Leather Research Institute, Bangladesh Council of Scientific and Industrial Research, Savar, Dhaka 1350, Bangladesh.
| | - Md Tushar Uddin
- Leather Research Institute, Bangladesh Council of Scientific and Industrial Research, Savar, Dhaka 1350, Bangladesh
| | - S M A Sujan
- Leather Research Institute, Bangladesh Council of Scientific and Industrial Research, Savar, Dhaka 1350, Bangladesh
| | - Zuwu Tang
- School of Materials and Environmental Engineering, Fujian Polytechnic Normal University, No.1, Campus New Village, Longjiang Street, Fuzhou 350300, China
| | - Digafe Alemu
- College of Biological and Chemical Engineering, Department of Biotechnology, Addis Ababa Science and Technology University, Addis Ababa 16417, Ethiopia
| | - Hosne Ara Begum
- Department of Chemistry, University of Dhaka, Dhaka 1000, Bangladesh
| | - Jianguo Li
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, Fujian, China
| | - Fang Huang
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, Fujian, China
| | - Yonghao Ni
- Department of Chemical and Biomedical Engineering, University of Maine, Orono, ME 04469, USA
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11
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Zhou L, Xu J, Schwab A, Tong W, Xu J, Zheng L, Li Y, Li Z, Xu S, Chen Z, Zou L, Zhao X, van Osch GJ, Wen C, Qin L. Engineered biochemical cues of regenerative biomaterials to enhance endogenous stem/progenitor cells (ESPCs)-mediated articular cartilage repair. Bioact Mater 2023; 26:490-512. [PMID: 37304336 PMCID: PMC10248882 DOI: 10.1016/j.bioactmat.2023.03.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/21/2023] [Accepted: 03/13/2023] [Indexed: 06/13/2023] Open
Abstract
As a highly specialized shock-absorbing connective tissue, articular cartilage (AC) has very limited self-repair capacity after traumatic injuries, posing a heavy socioeconomic burden. Common clinical therapies for small- to medium-size focal AC defects are well-developed endogenous repair and cell-based strategies, including microfracture, mosaicplasty, autologous chondrocyte implantation (ACI), and matrix-induced ACI (MACI). However, these treatments frequently result in mechanically inferior fibrocartilage, low cost-effectiveness, donor site morbidity, and short-term durability. It prompts an urgent need for innovative approaches to pattern a pro-regenerative microenvironment and yield hyaline-like cartilage with similar biomechanical and biochemical properties as healthy native AC. Acellular regenerative biomaterials can create a favorable local environment for AC repair without causing relevant regulatory and scientific concerns from cell-based treatments. A deeper understanding of the mechanism of endogenous cartilage healing is furthering the (bio)design and application of these scaffolds. Currently, the utilization of regenerative biomaterials to magnify the repairing effect of joint-resident endogenous stem/progenitor cells (ESPCs) presents an evolving improvement for cartilage repair. This review starts by briefly summarizing the current understanding of endogenous AC repair and the vital roles of ESPCs and chemoattractants for cartilage regeneration. Then several intrinsic hurdles for regenerative biomaterials-based AC repair are discussed. The recent advances in novel (bio)design and application regarding regenerative biomaterials with favorable biochemical cues to provide an instructive extracellular microenvironment and to guide the ESPCs (e.g. adhesion, migration, proliferation, differentiation, matrix production, and remodeling) for cartilage repair are summarized. Finally, this review outlines the future directions of engineering the next-generation regenerative biomaterials toward ultimate clinical translation.
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Affiliation(s)
- Liangbin Zhou
- Musculoskeletal Research Laboratory of Department of Orthopaedics and Traumatology & Innovative Orthopaedic Biomaterials and Drug Translational Research Laboratory of Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, 999077, Hong Kong SAR, China
- Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, 999077, Hong Kong SAR, China
| | - Jietao Xu
- Department of Orthopaedics and Sports Medicine, Erasmus MC, University Medical Center Rotterdam, 3015 GD, Rotterdam, the Netherlands
| | - Andrea Schwab
- Department of Orthopaedics and Sports Medicine, Erasmus MC, University Medical Center Rotterdam, 3015 GD, Rotterdam, the Netherlands
- Department of Oral and Maxillofacial Surgery, Erasmus MC, University Medical Center Rotterdam, 3015 GD, Rotterdam, the Netherlands
| | - Wenxue Tong
- Musculoskeletal Research Laboratory of Department of Orthopaedics and Traumatology & Innovative Orthopaedic Biomaterials and Drug Translational Research Laboratory of Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, 999077, Hong Kong SAR, China
| | - Jiankun Xu
- Musculoskeletal Research Laboratory of Department of Orthopaedics and Traumatology & Innovative Orthopaedic Biomaterials and Drug Translational Research Laboratory of Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, 999077, Hong Kong SAR, China
| | - Lizhen Zheng
- Musculoskeletal Research Laboratory of Department of Orthopaedics and Traumatology & Innovative Orthopaedic Biomaterials and Drug Translational Research Laboratory of Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, 999077, Hong Kong SAR, China
- Centre for Regenerative Medicine and Health, Hong Kong Institute of Science & Innovation, Chinese Academy of Sciences - CRMH, 999077, Hong Kong SAR, China
| | - Ye Li
- Musculoskeletal Research Laboratory of Department of Orthopaedics and Traumatology & Innovative Orthopaedic Biomaterials and Drug Translational Research Laboratory of Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, 999077, Hong Kong SAR, China
| | - Zhuo Li
- Department of Biomedical Engineering, Faculty of Engineering, The Chinese University of Hong Kong, 999077, Hong Kong SAR, China
| | - Shunxiang Xu
- Musculoskeletal Research Laboratory of Department of Orthopaedics and Traumatology & Innovative Orthopaedic Biomaterials and Drug Translational Research Laboratory of Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, 999077, Hong Kong SAR, China
| | - Ziyi Chen
- Musculoskeletal Research Laboratory of Department of Orthopaedics and Traumatology & Innovative Orthopaedic Biomaterials and Drug Translational Research Laboratory of Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, 999077, Hong Kong SAR, China
| | - Li Zou
- Musculoskeletal Research Laboratory of Department of Orthopaedics and Traumatology & Innovative Orthopaedic Biomaterials and Drug Translational Research Laboratory of Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, 999077, Hong Kong SAR, China
| | - Xin Zhao
- Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, 999077, Hong Kong SAR, China
| | - Gerjo J.V.M. van Osch
- Department of Orthopaedics and Sports Medicine, Erasmus MC, University Medical Center Rotterdam, 3015 GD, Rotterdam, the Netherlands
- Department of Otorhinolaryngology, Erasmus MC, University Medical Center Rotterdam, 3015 GD, Rotterdam, the Netherlands
- Department of Biomechanical Engineering, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology (TU Delft), 2600 AA, Delft, the Netherlands
| | - Chunyi Wen
- Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, 999077, Hong Kong SAR, China
| | - Ling Qin
- Musculoskeletal Research Laboratory of Department of Orthopaedics and Traumatology & Innovative Orthopaedic Biomaterials and Drug Translational Research Laboratory of Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, 999077, Hong Kong SAR, China
- Centre for Translational Medicine Research and Development, Shenzhen Institute of Advanced Technology, The Chinese Academy of Sciences, 518000, Shenzhen, China
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12
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Pourmadadi M, Rahmani E, Shamsabadipour A, Samadi A, Esmaeili J, Arshad R, Rahdar A, Tavangarian F, Pandey S. Novel Carboxymethyl cellulose based nanocomposite: A Promising Biomaterial for Biomedical Applications. Process Biochem 2023. [DOI: 10.1016/j.procbio.2023.03.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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13
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Yuan X, Wan J, Yang Y, Huang L, Zhou C, Su J, Hua S, Pu H, Zou Y, Zhu H, Jiang X, Xiao J. Thermosensitive hydrogel for cartilage regeneration via synergistic delivery of SDF-1α like polypeptides and kartogenin. Carbohydr Polym 2023; 304:120492. [PMID: 36641179 DOI: 10.1016/j.carbpol.2022.120492] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 12/12/2022] [Accepted: 12/19/2022] [Indexed: 12/26/2022]
Abstract
Regeneration of injured articular cartilage is limited by low early-stage recruitment of stem cells and insufficient chondrogenic differentiation. Hydrogels are widely used to repair cartilage because they have excellent mechanical and biological properties. In this study, a dual drug-loaded thermosensitive hydroxypropyl chitin hydrogel (HPCH) system was prepared to release stromal-derived factor-1α-like polypeptides (SDFP) and kartogenin (KGN) for stem-cell recruitment and chondrogenic differentiation. The hydrogel had a network structure that promoted cell growth and nutrient exchange. Moreover, it was temperature sensitive and suitable for filling irregular defects. The system showed good biocompatibility in vitro and promoted stem-cell recruitment and chondrogenic differentiation. Furthermore, it reduced chondrocyte catabolism under inflammatory conditions. Animal experiments demonstrated that the dual-drug hydrogel systems can promote the regeneration of articular cartilage in rats. This study confirmed that an HPCH system loaded with KGN and SDFP could effectively repair articular cartilage defects and represents a viable treatment strategy.
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Affiliation(s)
- Xi Yuan
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Junlai Wan
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yang Yang
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Long Huang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Chuankun Zhou
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jin Su
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Engineering Research Center of Ceramic Materials for Additive Manufacturing, Ministry of Education, Wuhan 430074, China
| | - Shuaibin Hua
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Engineering Research Center of Ceramic Materials for Additive Manufacturing, Ministry of Education, Wuhan 430074, China
| | - Hongxu Pu
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yi Zou
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Hao Zhu
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Xulin Jiang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, China.
| | - Jun Xiao
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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14
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Zhou Q, Su X, Wu J, Zhang X, Su R, Ma L, Sun Q, He R. Additive Manufacturing of Bioceramic Implants for Restoration Bone Engineering: Technologies, Advances, and Future Perspectives. ACS Biomater Sci Eng 2023; 9:1164-1189. [PMID: 36786214 DOI: 10.1021/acsbiomaterials.2c01164] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Treating bone defects is highly challenging because they do not heal on their own inside the patients, so implants are needed to assist in the reconstruction of the bone. Bioceramic implants based on additive manufacturing (AM) are currently emerging as promising treatment options for restoration bone engineering. On the one hand, additively manufactured bioceramic implants have excellent mechanical properties and biocompatibility, which are suitable for bone regeneration. On the other hand, the designable structure and adjustable pores of additively manufactured bioceramic implants allow them to promote suitable cell growth and tissue climbing. Herein, this review unfolds to introduce several frequently employed AM technologies for bioceramic implants. After that, advances in commonly used additively manufactured bioceramic implants, including bioinert ceramic implants, bioactive ceramic implants, and bioceramic/organic composite implants, are categorized and summarized. Finally, the future perspectives of additively manufactured bioceramic implants, in terms of mechanical performance improvement, innovative structural design, biological property enhancement, and other functionalization approaches, are proposed and forecasted. This review is believed to provide some fundamental understanding and cutting-edge knowledge for the additive manufacturing of bioceramic implants for restoration bone engineering.
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Affiliation(s)
- Qing Zhou
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Xiaonan Su
- Beijing Scrianen Pharmaceutical Co. Ltd., Beijing 102699, China
| | - Jianqin Wu
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Xueqin Zhang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Ruyue Su
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Lili Ma
- Center of Dental Medicine, China-Japan Friendship Hospital, Beijing 100029, China
| | - Qiang Sun
- Center of Dental Medicine, China-Japan Friendship Hospital, Beijing 100029, China
| | - Rujie He
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
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15
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Stimuli-Responsive Polysaccharide Hydrogels and Their Composites for Wound Healing Applications. Polymers (Basel) 2023; 15:polym15040986. [PMID: 36850269 PMCID: PMC9958605 DOI: 10.3390/polym15040986] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 02/18/2023] Open
Abstract
There is a growing concern about wound care, since traditional dressings such as bandages and sutures can no longer meet existing needs. To address the demanding requirements, naturally occurring polymers have been extensively exploited for use in modern wound management. Polysaccharides, being the most abundant biopolymers, have some distinct characteristics, including biocompatibility and biodegradability, which render them ideal candidates for wound healing applications. Combining them with inorganic and organic moieties can produce effective multifunctional composites with the desired mechanical properties, high wound healing efficiencies and excellent antibacterial behavior. Recent research endeavors focus on the development of stimuli-responsive polysaccharide composites for biomedical applications. Polysaccharide composites, being sensitive to the local environment, such as changes of the solution temperature, pH, etc., can sense and react to the wound conditions, thus promoting an effective interaction with the wound. This review highlights the recent advances in stimuli-responsive polysaccharide hydrogels and their composites for use in wound healing applications. The synthetic approaches, physical, chemical, and biochemical properties as well as their function in wound healing will be discussed.
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16
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Wang S, Xing X, Peng W, Huang C, Du Y, Yang H, Zhou J. Fabrication of an exosome-loaded thermosensitive chitin-based hydrogel for dental pulp regeneration. J Mater Chem B 2023; 11:1580-1590. [PMID: 36722937 DOI: 10.1039/d2tb02073d] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Injective thermosensitive hydrogels are considered promising scaffolds to trigger dental pulp regeneration in devitalized human teeth. In this study, we developed a hydroxypropyl chitin (HPCH)/chitin whisker (CW) thermosensitive hydrogel with enhanced mechanical properties and biological activities. Exosomes can serve as biomimetic tools for tissue engineering, but the rapid clearance of unconjugated exosomes in vivo limits their therapeutic effects. To address this challenge, exosomes were isolated from human pulp stem cells (hDPSCs) and directly embedded into the HPCH/CW pre-gel to form an exosome-loaded hydrogel (HPCH/CW/Exo). The exosome-loaded thermosensitive hydrogel can be easily injected into an irregular endodontic space and gelated in situ. In vitro cell experiments proved that the delivery of exosomes significantly improved the ability of hydrogels to promote odontogenesis and angiogenesis. Meanwhile, in vivo animal experiments revealed the formation of new dental pulp-like tissues in an implanted tooth root model. Therefore, the proposed hydrogel provides a great potential alternative to traditional root canal therapy in dental clinics.
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Affiliation(s)
- Shilei Wang
- Hubei Engineering Center of Natural Polymer-Based Medical Materials and Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China.
| | - Xin Xing
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory for Oral Biomedical Ministry of Education School & Hospital of Stomatology, Wuhan University, Wuhan 430072, P. R. China.
| | - Wenan Peng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory for Oral Biomedical Ministry of Education School & Hospital of Stomatology, Wuhan University, Wuhan 430072, P. R. China.
| | - Cui Huang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory for Oral Biomedical Ministry of Education School & Hospital of Stomatology, Wuhan University, Wuhan 430072, P. R. China.
| | - Yumin Du
- School of Resource and Environmental Science, Hubei Key Laboratory of Biomass Resource Chemistry and Environmental Biotechnology, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430072, P. R. China
| | - Hongye Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory for Oral Biomedical Ministry of Education School & Hospital of Stomatology, Wuhan University, Wuhan 430072, P. R. China.
| | - Jinping Zhou
- Hubei Engineering Center of Natural Polymer-Based Medical Materials and Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China.
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17
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Nath PC, Debnath S, Sharma M, Sridhar K, Nayak PK, Inbaraj BS. Recent Advances in Cellulose-Based Hydrogels: Food Applications. Foods 2023; 12:foods12020350. [PMID: 36673441 PMCID: PMC9857633 DOI: 10.3390/foods12020350] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 01/13/2023] Open
Abstract
In the past couple of years, cellulose has attracted a significant amount of attention and research interest due to the fact that it is the most abundant and renewable source of hydrogels. With increasing environmental issues and an emerging demand, researchers around the world are focusing on naturally produced hydrogels in particular due to their biocompatibility, biodegradability, and abundance. Hydrogels are three-dimensional (3D) networks created by chemically or physically crosslinking linear (or branching) hydrophilic polymer molecules. Hydrogels have a high capacity to absorb water and biological fluids. Although hydrogels have been widely used in food applications, the majority of them are not biodegradable. Because of their functional characteristics, cellulose-based hydrogels (CBHs) are currently utilized as an important factor for different aspects in the food industry. Cellulose-based hydrogels have been extensively studied in the fields of food packaging, functional food, food safety, and drug delivery due to their structural interchangeability and stimuli-responsive properties. This article addresses the sources of CBHs, types of cellulose, and preparation methods of the hydrogel as well as the most recent developments and uses of cellulose-based hydrogels in the food processing sector. In addition, information regarding the improvement of edible and functional CBHs was discussed, along with potential research opportunities and possibilities. Finally, CBHs could be effectively used in the industry of food processing for the aforementioned reasons.
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Affiliation(s)
- Pinku Chandra Nath
- Department of Bio Engineering, National Institute of Technology Agartala, Jirania 799046, India
| | - Shubhankar Debnath
- Department of Bio Engineering, National Institute of Technology Agartala, Jirania 799046, India
| | - Minaxi Sharma
- Haute Ecole Provinciale de Hainaut-Condorcet, 7800 Ath, Belgium
| | - Kandi Sridhar
- Department of Food Technology, Karpagam Academy of Higher Education, Coimbatore 641021, India
| | - Prakash Kumar Nayak
- Department of Food Engineering and Technology, Central Institute of Technology Kokrajhar, Kokrajhar 783370, India
- Correspondence: (P.K.N.); or (B.S.I.)
| | - Baskaran Stephen Inbaraj
- Department of Food Science, Fu Jen Catholic University, New Taipei City 242062, Taiwan
- Correspondence: (P.K.N.); or (B.S.I.)
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18
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Sungkhaphan P, Risangud N, Hankamolsiri W, Sonthithai P, Janvikul W. Pluronic-F127 and Click chemistry-based injectable biodegradable hydrogels with controlled mechanical properties for cell encapsulation. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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19
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Koland M, Narayanan Vadakkepushpakath A, John A, Tharamelveliyil Rajendran A, Raghunath I. Thermosensitive In Situ Gels for Joint Disorders: Pharmaceutical Considerations in Intra-Articular Delivery. Gels 2022; 8:723. [PMID: 36354630 PMCID: PMC9689403 DOI: 10.3390/gels8110723] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/01/2022] [Accepted: 11/04/2022] [Indexed: 09/17/2023] Open
Abstract
The intra-articular administration of conventional drug solutions or dispersions in joint diseases such as osteoarthritis has a relatively short retention time and, therefore, limited therapeutic effect. Thermosensitive polymer solutions that exhibit a sol-gel phase transition near body temperature after injection can prolong drug retention by providing a depot from which the drug release is sustained while relieving inflammation and preventing degradation of the joint complex. Thermosensitive hydrogels have in recent times garnered considerable attention in the intra-articular therapeutics of joint diseases such as osteoarthritis. Among the stimuli-responsive gelling systems, most research has focused on thermosensitive hydrogels. These gels are preferred over other stimuli-sensitive hydrogels since they have well-controlled in situ gelling properties and are also easier to load with drugs. Temperature-sensitive polymers, such as block copolymers or poloxamers, are frequently used to modify their gelation properties, usually in combination with other polymers. They are compatible with most drugs but may pose formulation challenges in terms of their low-response time, highly fragile nature, and low biocompatibility. The stability and biodegradability of implant hydrogels can control the drug release rate and treatment efficacy. This review stresses the application of thermosensitive gels in joint disorders and summarizes recent developments for intra-articular application, including the incorporation of nanoparticles. The hydrogel composition, drug release mechanisms, and the challenges involved in their formulation and storage are also discussed.
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Affiliation(s)
- Marina Koland
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences (NGSMIPS), Nitte (Deemed to be University), Mangalore 575018, India
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20
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Xia X, Rao P, Yang J, Ciamarra MP, Ni R. Entropy-Driven Thermo-gelling Vitrimer. JACS AU 2022; 2:2359-2366. [PMID: 36311840 PMCID: PMC9597860 DOI: 10.1021/jacsau.2c00425] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/08/2022] [Accepted: 09/09/2022] [Indexed: 06/16/2023]
Abstract
Thermo-gelling polymers have been envisioned as promising smart biomaterials but limited by their weak mechanical and thermodynamic stabilities. Here, we propose a new thermo-gelling vitrimer, which remains at a liquid state because of the addition of protector molecules preventing the crosslinking, and with increasing temperature, an entropy-driven crosslinking occurs to induce the sol-gel transition. Moreover, we find that the activation barrier in the metathesis reaction of vitrimers plays an important role, and experimentally, one can use catalysts to tune the activation barrier to drive the vitrimer to form an equilibrium gel at high temperature, which is not subject to any thermodynamic instability. We formulate a mean-field theory to describe the entropy-driven crosslinking of the vitrimer, which agrees quantitatively with computer simulations and paves the way for the design and fabrication of novel vitrimers for biomedical applications.
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Affiliation(s)
- Xiuyang Xia
- School
of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
- Division
of Physics and Applied Physics, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Peilin Rao
- School
of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Juan Yang
- Department
of Chemistry, National University of Singapore, Singapore 117546, Singapore
| | - Massimo Pica Ciamarra
- Division
of Physics and Applied Physics, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Ran Ni
- School
of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
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21
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Guo J, Zhang M, Fang Z. Valorization of mushroom by-products: a review. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:5593-5605. [PMID: 35460088 DOI: 10.1002/jsfa.11946] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/15/2022] [Accepted: 04/22/2022] [Indexed: 06/14/2023]
Abstract
With the rapid growth of the global economy and the global population, the production of solid waste has increased remarkably. Mushrooms are gaining popularity among researchers for their ability to turn waste into nutrients. However, a large number of by-products are produced during the industrial processing of mushrooms. Traditional waste management, focusing on the utilization and disposal of mushroom by-products, has attracted the attention of researchers. Meanwhile, the circular economy has become a multidisciplinary research field, and the valorization of mushroom by-products is a very important part of circular economy research. Various mushroom by-products of mushroom are reviewed in this paper. By-products are used in food as raw materials or functional components, in livestock and poultry feed after grinding/fermentation, and as electrochemical materials and papermaking materials. The by-products can also be used to produce ethanol and other biological sources of energy, as absorbing substances in sewage treatment, and as fertilizer in soil amendment. Mushroom processing by-products can be applied in various fields. To improve production efficiency, new extraction technology (including supercritical fluid technology and microwave extraction technology) can be adopted to increase the bioactive substance content in the by-products. Choosing appropriate processing temperature, time, and other processing conditions can also enhance product quality. Finally, more research is needed on the cost-effective utilization of the by-products and the feasibility of industrialization. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Jia Guo
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- Jiangsu Province International Joint Laboratory on Fresh Food Smart Processing and Quality Monitoring, Jiangnan University, Wuxi, China
| | - Min Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
| | - Zhongxiang Fang
- School of Agriculture and Food, The University of Melbourne, Parkville, Australia
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22
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Visualization of degradation of injectable thermosensitive hydroxypropyl chitin modified by aggregation-induced emission. Carbohydr Polym 2022; 293:119739. [DOI: 10.1016/j.carbpol.2022.119739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/08/2022] [Accepted: 06/13/2022] [Indexed: 11/23/2022]
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23
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Cao X, Li F, Zheng T, Li G, Wang W, Li Y, Chen S, Li X, Lu Y. Cellulose-based functional hydrogels derived from bamboo for product design. FRONTIERS IN PLANT SCIENCE 2022; 13:958066. [PMID: 36051293 PMCID: PMC9424926 DOI: 10.3389/fpls.2022.958066] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Hydrogels have outstanding research and application prospects in the field of product design. Among them, the design and preparation of cellulose-based functional hydrogels derived from bamboo have attracted increasing research interest. Cellulose-based hydrogels not only have the skeleton function of hydrogels, but also retain excellent specificity, smart structural design, precise molecular recognition ability, and superior biocompatibility. Cellulose-based hydrogels show important application prospects in various fields, such as environmental protection, biomedicine, and energy. What's more, they are potentially viable for application in food packaging and plant agriculture, such as fertilizers release and crop production. Recently, researchers have extracted cellulose from bamboo and generated a variety of cellulose-based functional hydrogels with excellent properties by various cross-linking methods. In addition, a variety of multifunctional hybrid cellulose-based hydrogels have been constructed by introducing functional components or combining them with other functional materials, thus expanding the breadth and depth of their applications. Herein, we elaborate on advances in the field of cellulose-based hydrogels and highlight their applications in food packaging and plant agriculture. Meanwhile, the existing problems and prospects are summarized. The review provides a reference for the further development of cellulose-based hydrogels.
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Affiliation(s)
- Xiaobing Cao
- School of Art and Design, Bamboo Research Institute, Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Hangzhou, China
- Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, BC, Canada
| | - Fei Li
- School of Science and Technology, Huzhou College, Huzhou, China
| | - Tingting Zheng
- School of Art and Design, Bamboo Research Institute, Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Hangzhou, China
| | - Guohui Li
- School of Art and Design, Bamboo Research Institute, Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Hangzhou, China
| | - Wenqian Wang
- School of Art and Design, Bamboo Research Institute, Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Hangzhou, China
| | - Yanjun Li
- School of Art and Design, Bamboo Research Institute, Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Hangzhou, China
- School of Materials Engineering, Nanjing Forestry University, Nanjing, China
| | - Siyu Chen
- School of Art and Design, Bamboo Research Institute, Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Hangzhou, China
| | - Xin Li
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
| | - Yi Lu
- Institute of Biotechnology, RWTH Aachen University, Aachen, Germany
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A novel visible light-curing chitosan-based hydrogel membrane for Guided Tissue Regeneration. Colloids Surf B Biointerfaces 2022; 218:112760. [DOI: 10.1016/j.colsurfb.2022.112760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 08/02/2022] [Accepted: 08/04/2022] [Indexed: 11/21/2022]
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Cao X, Li S, Chen W, Lu H, Ye L, Min Z, Sun S, Teng C, Yin H, Zhang Q, He W, Wang X, Lv W, Lv L, Xin H. Multifunctional Hybrid Hydrogel System Enhanced the Therapeutic Efficacy of Treatments for Postoperative Glioma. ACS APPLIED MATERIALS & INTERFACES 2022; 14:27623-27633. [PMID: 35673881 DOI: 10.1021/acsami.2c05147] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Glioma is the most lethal brain tumor with a poor prognosis, and a combination of multiple therapeutic strategies is critical for postoperative glioma treatment. Herein, a multifunctional hybrid hydrogel system (designated as CP&CL@RNPPTX-Gel) was developed for local treatment of postoperative glioma. The system was composed of self-illuminating chlorin e6 (Ce6) conjugated with luminol molecule (CL)-loaded glioma-targeting paclitaxel prodrug nanoparticles and copper peroxide nanodots (CP NDs) coembedded into a three-dimensional thermosensitive hydroxypropyl chitin hydrogel frame. After injection of CP&CL@RNPPTX-Gel into the cavity of postoperative glioma, the solution could be cross-linked into the gel as a drug reservoir under body temperature stimulation. Then, the sustained-released CP NDs decomposed into Cu2+ and H2O2 in the acidic microenvironment of the glioma cells to exert chemodynamic therapy (CDT). Meanwhile, Cu2+ could catalyze the self-luminescence of CL to induce photodynamic therapy (PDT) without external excitation light. Moreover, paclitaxel prodrug nanoparticles degraded into paclitaxel to restrain residual glioma cells in response to intracellular reduced glutathione (GSH). The in vitro and in vivo results showed that CP&CL@RNPPTX-Gel had great potential as a multifunctional hybrid hydrogel system with remarkable therapeutic effects for postoperative glioma treatment via a combination of chemotherapy, CDT, and PDT.
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Affiliation(s)
- Xiang Cao
- Department of Pharmaceutics and Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Shengnan Li
- Department of Pharmaceutics and Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Wenli Chen
- Department of Rehabilitation Medicine, ZhongDa Hospital of Southeast University, Nanjing 210009, China
| | - Hongdan Lu
- Department of Pharmaceutics and Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Lu Ye
- Department of Pharmaceutics and Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Zhiyi Min
- Department of Pharmaceutics and Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Shanbo Sun
- Department of Pharmaceutics and Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Chuanhui Teng
- Department of Pharmaceutics and Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Haoyuan Yin
- Department of Pharmaceutics and Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Qi Zhang
- Department of Pharmaceutics and Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Weichong He
- Department of Pharmaceutics and Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Xiuzhen Wang
- Department of Pharmaceutics and Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Wei Lv
- Department of Pharmacy, The Affiliated Jiangyin Hospital of Xuzhou Medical University, Wuxi 214400, China
| | - Lingyan Lv
- Department of Pharmacy, The Affiliated Jiangyin Hospital of Xuzhou Medical University, Wuxi 214400, China
| | - Hongliang Xin
- Department of Pharmaceutics and Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
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Liao J, Hou B, Huang H. Preparation, properties and drug controlled release of chitin-based hydrogels: An updated review. Carbohydr Polym 2022; 283:119177. [DOI: 10.1016/j.carbpol.2022.119177] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/11/2022] [Accepted: 01/21/2022] [Indexed: 02/08/2023]
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Qiao Q, Fu X, Huang R, Lei S, Leng Y, Liu Z, Xia Z, Jiang X. Ropivacaine-loaded, hydroxypropyl chitin thermo-sensitive hydrogel combined with hyaluronan: an injectable, sustained-release system for providing long-lasting local anesthesia in rats. Reg Anesth Pain Med 2022; 47:234-241. [PMID: 35168948 DOI: 10.1136/rapm-2021-102726] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 12/31/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND OBJECTIVE Ropivacaine hydrochloride is a commonly used local anesthetic in clinics. However, local injection or continuous infusion of ropivacaine has been associated with several disadvantages. Accordingly, it is important to develop a new controlled release system for local administration of ropivacaine to achieve a prolong anesthetic effect, improve efficacy, and minimize the side effects. METHODS We developed injectable hydroxypropyl chitin thermo-sensitive hydrogel (HPCH) combined with hyaluronan (HA), which was used to synthesize a ropivacaine (R)-loaded controlled release system. We then conducted drug release test and cytotoxicity assay in vitro. Importantly, we examined the analgesic effects and biocompatibility of this system in vivo by injecting different concentrations of R-HPCH-HA (7.5, 15, 22.5 mg/mL), ropivacaine hydrochloride (RHCL, 7.5 mg/mL), or saline (all in 0.5 mL) near the sciatic nerve in rats. RESULTS R-HPCH-HA induced concentration-dependent thermal-sensory blockade and motor blockade in vivo. In hot plate test, R-HPCH-HA (22.5 mg/mL) induced a significant longer thermal-sensory blockade (17.7±0.7 hours), as compared with RHCL (7.5 mg/mL, 5.7±0.8 hours, n=6/group, p<0.05). It also produced a more prolonged motor blockade (6.8±0.8 hours) than RHCL (3.5±0.8 hours, p<0.05). R-HPCH-HA caused less cytotoxicity than RHCL, as indicated by the higher cell viability in vitro (n=8/group). CONCLUSION Our findings in a sciatic nerve block model demonstrated that the injectable, ropivacaine-loaded controlled release system effectively prolonged the local analgesic effect in rats without notable side effects.
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Affiliation(s)
- Qianqian Qiao
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Xiangyun Fu
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Rui Huang
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Shaoqing Lei
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Yan Leng
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Zhigang Liu
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Zhongyuan Xia
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Xulin Jiang
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan, Hubei, China
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Zou M, Chi J, Jiang Z, Zhang W, Hu H, Ju R, Liu C, Xu T, Wang S, Feng Z, Liu W, Han B. Functional thermosensitive hydrogels based on chitin as RIN-m5F cell carrier for the treatment of diabetes. Int J Biol Macromol 2022; 206:453-466. [PMID: 35247418 DOI: 10.1016/j.ijbiomac.2022.02.175] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/15/2022] [Accepted: 02/27/2022] [Indexed: 12/19/2022]
Abstract
Herein, the thermosensitive hydroxypropyl chitin (HPCT) hydrogel was prepared and the chemical structures, microstructures, rheological properties and degradation in vitro were investigated. The HPCT hydrogel possessed satisfactory biocompatibility in mouse fibroblast cells and Sprague Dawley rats. On the other hand, N-acetylglucosamine (NAG) and carboxymethyl chitosan (CMCS) provided favorable capacity for promoting cell proliferation, delaying cell apoptosis, and facilitating the insulin secretion of rat pancreatic beta cells (RIN-m5F) in three-dimensional culture. Most importantly, the effects of HPCT/NAG and HPCT/CMCS thermosensitive hydrogels as RIN-m5F cells carriers were evaluated via injection into different areas of diabetic rats. Our results demonstrated that HPCT/NAG and HPCT/CMCS hydrogels loaded RIN-m5F cells could keep cells survival, maintain insulin secretion and reduce blood glucose for one week. Overall, the functional thermosensitive hydrogels based on HPCT were effective cell carriers for RIN-m5F cells and might provide novel strategy for the treatment of diabetes via cell engineering.
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Affiliation(s)
- Mingyu Zou
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Jinhua Chi
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Zhiwen Jiang
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266235, PR China
| | - Wei Zhang
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Huiwen Hu
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Ruibao Ju
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Chenqi Liu
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Tianjiao Xu
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Shuo Wang
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Zhilong Feng
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Wanshun Liu
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Baoqin Han
- Laboratory of Biochemistry and Biomedical Materials, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266235, PR China.
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Bao Y, He J, Song K, Guo J, Zhou X, Liu S. Functionalization and Antibacterial Applications of Cellulose-Based Composite Hydrogels. Polymers (Basel) 2022; 14:polym14040769. [PMID: 35215680 PMCID: PMC8879376 DOI: 10.3390/polym14040769] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 02/12/2022] [Accepted: 02/14/2022] [Indexed: 02/04/2023] Open
Abstract
Pathogens, especially drug-resistant pathogens caused by the abuse of antibiotics, have become a major threat to human health and public health safety. The exploitation and application of new antibacterial agents is extremely urgent. As a natural biopolymer, cellulose has recently attracted much attention due to its excellent hydrophilicity, economy, biocompatibility, and biodegradability. In particular, the preparation of cellulose-based hydrogels with excellent structure and properties from cellulose and its derivatives has received increasing attention thanks to the existence of abundant hydrophilic functional groups (such as hydroxyl, carboxy, and aldehyde groups) within cellulose and its derivatives. The cellulose-based hydrogels have broad application prospects in antibacterial-related biomedical fields. The latest advances of preparation and antibacterial application of cellulose-based hydrogels has been reviewed, with a focus on the antibacterial applications of composite hydrogels formed from cellulose and metal nanoparticles; metal oxide nanoparticles; antibiotics; polymers; and plant extracts. In addition, the antibacterial mechanism and antibacterial characteristics of different cellulose-based antibacterial hydrogels were also summarized. Furthermore, the prospects and challenges of cellulose-based antibacterial hydrogels in biomedical applications were also discussed.
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Affiliation(s)
- Yunhui Bao
- Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Jishou University, Zhangjiajie 427000, China; (Y.B.); (J.H.); (K.S.); (J.G.); (X.Z.)
| | - Jian He
- Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Jishou University, Zhangjiajie 427000, China; (Y.B.); (J.H.); (K.S.); (J.G.); (X.Z.)
- College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
| | - Ke Song
- Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Jishou University, Zhangjiajie 427000, China; (Y.B.); (J.H.); (K.S.); (J.G.); (X.Z.)
- College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
| | - Jie Guo
- Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Jishou University, Zhangjiajie 427000, China; (Y.B.); (J.H.); (K.S.); (J.G.); (X.Z.)
- College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
| | - Xianwu Zhou
- Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Jishou University, Zhangjiajie 427000, China; (Y.B.); (J.H.); (K.S.); (J.G.); (X.Z.)
- College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
| | - Shima Liu
- Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Jishou University, Zhangjiajie 427000, China; (Y.B.); (J.H.); (K.S.); (J.G.); (X.Z.)
- College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
- Correspondence: ; Tel.: +86-0744-8231386
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30
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Yang SR, Yeh YY, Yeh YC. Ultrasound-triggered hydrogel formation through thiol-norbornene reactions. Chem Commun (Camb) 2022; 58:1119-1122. [PMID: 34981088 DOI: 10.1039/d1cc04848a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An ultrasound-initiated thiol-norbornene reaction has been applied to fabricate hydrogels, and the ultrasound conditions in determining the properties of hydrogels have been systematically investigated.
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Affiliation(s)
- Su-Rung Yang
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan.
| | - Ying-Yu Yeh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan.
| | - Yi-Cheun Yeh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan.
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Emig R, Zgierski-Johnston CM, Timmermann V, Taberner AJ, Nash MP, Kohl P, Peyronnet R. Passive myocardial mechanical properties: meaning, measurement, models. Biophys Rev 2021; 13:587-610. [PMID: 34765043 PMCID: PMC8555034 DOI: 10.1007/s12551-021-00838-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 08/26/2021] [Indexed: 02/06/2023] Open
Abstract
Passive mechanical tissue properties are major determinants of myocardial contraction and relaxation and, thus, shape cardiac function. Tightly regulated, dynamically adapting throughout life, and affecting a host of cellular functions, passive tissue mechanics also contribute to cardiac dysfunction. Development of treatments and early identification of diseases requires better spatio-temporal characterisation of tissue mechanical properties and their underlying mechanisms. With this understanding, key regulators may be identified, providing pathways with potential to control and limit pathological development. Methodologies and models used to assess and mimic tissue mechanical properties are diverse, and available data are in part mutually contradictory. In this review, we define important concepts useful for characterising passive mechanical tissue properties, and compare a variety of in vitro and in vivo techniques that allow one to assess tissue mechanics. We give definitions of key terms, and summarise insight into determinants of myocardial stiffness in situ. We then provide an overview of common experimental models utilised to assess the role of environmental stiffness and composition, and its effects on cardiac cell and tissue function. Finally, promising future directions are outlined.
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Affiliation(s)
- Ramona Emig
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
- CIBSS Centre for Integrative Biological Signalling Studies, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Callum M. Zgierski-Johnston
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Viviane Timmermann
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Andrew J. Taberner
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
- Department of Engineering Science, The University of Auckland, Auckland, New Zealand
| | - Martyn P. Nash
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
- Department of Engineering Science, The University of Auckland, Auckland, New Zealand
| | - Peter Kohl
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
- CIBSS Centre for Integrative Biological Signalling Studies, University of Freiburg, Freiburg, Germany
- Faculty of Engineering, University of Freiburg, Freiburg, Germany
| | - Rémi Peyronnet
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
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Xing F, Chi Z, Yang R, Xu D, Cui J, Huang Y, Zhou C, Liu C. Chitin-hydroxyapatite-collagen composite scaffolds for bone regeneration. Int J Biol Macromol 2021; 184:170-180. [PMID: 34052273 DOI: 10.1016/j.ijbiomac.2021.05.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 04/19/2021] [Accepted: 05/02/2021] [Indexed: 01/01/2023]
Abstract
Bone defect is usually difficult to recover quickly, and bone scaffold transplantation is considered to be an effective method. Biomaterials have a wide range of application prospects in bone tissue repair, and the two key problems are the selection of materials and cells. The object of this study was to discuss the structural characteristics of bone scaffold materials and their effects on bone repair in vivo. The chitin-hydroxyapatite (HAP)-collagen composite scaffolds (CHCS) was prepared with epichlorohydrin (ECH) as crosslinking agent. The structure was characterized and the compressive strength, porosity, water absorbency and stability were investigated. The biocompatibility and osteogenic differentiation of CHCS in vitro were detected, and the effect of defect repair in vivo was evaluated. The results suggested that HAP not only enhanced the compressive strength of CHCS, but also promoted the formation of calcium nodules due to its bone conductivity. Histological staining showed that collagen promoted collagen deposition and new bone formation. X-ray images also indicated that CHCS transplantation accelerated bone repair. Therefore, CHCs has immense potential in bone regeneration.
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Affiliation(s)
- Fei Xing
- College of Marine Life Sciences, Ocean University of China, 266003 Qingdao, China
| | - Zhe Chi
- College of Marine Life Sciences, Ocean University of China, 266003 Qingdao, China
| | - Rongxue Yang
- College of Marine Life Sciences, Ocean University of China, 266003 Qingdao, China
| | - Derong Xu
- The Affiliated Hospital of Qingdao University, 266000 Qingdao, China
| | - Jiufa Cui
- The Affiliated Hospital of Qingdao University, 266000 Qingdao, China
| | - Yufen Huang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, 30013 Hsinchu, Taiwan, Republic of China
| | - Chuanli Zhou
- The Affiliated Hospital of Qingdao University, 266000 Qingdao, China.
| | - Chenguang Liu
- College of Marine Life Sciences, Ocean University of China, 266003 Qingdao, China.
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Zheng J, Lv S, Zhong Y, Jiang X. Injectable hydroxypropyl chitin hydrogels embedded with carboxymethyl chitin microspheres prepared via a solvent-free process for drug delivery. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 32:1564-1583. [PMID: 33957063 DOI: 10.1080/09205063.2021.1926893] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Microspheres and injectable hydrogels derived from natural biopolymers have been extensively investigated as controlled local drug delivery systems. In this study, we prepared carboxymethyl chitin microspheres (CMCH-Ms) with a diameter of 10-100 μm through physical crosslinking by increasing temperature in an aqueous two-phase system without using organic solvents, surfactants and crosslinking agents. The stable microspheres keeping spherical shape with porous microstructure in different pH environments were embeded in thermosensitive hydroxypropyl chitin (HPCH) hydrogels. The morphology, gelation rate, swelling, rheological and mechanical properties, in vitro degradation and cytotoxicity, drug loading and drug release of the CMCH-Ms/HPCH gel scaffolds were examined. In vitro degradation and cytotoxicity test indicated that CMCH-Ms/HPCH gel scaffolds were biodegradable and non-cytotoxic. Moreover, no organic solvent was used in the preparation and drug loading process of CMCH-Ms/HPCH gel scaffold. Importantly, less burst drug release and long-term sustained-release from the CMCH-Ms/HPCH composite hydrogel was observed than those from only CMCH-Ms or HPCH hydrogel. Thus, the composite CMCH-Ms/HPCH hydrogel exhibited great potential application for loading different drugs and sustained drug release in controlled local drug delivery systems.
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Affiliation(s)
- Jieyu Zheng
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, P.R. China
| | - Siyao Lv
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, P.R. China
| | - Yalan Zhong
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, P.R. China
| | - Xulin Jiang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, P.R. China
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Park SG, Li MX, Cho WK, Joung YK, Huh KM. Thermosensitive gallic acid-conjugated hexanoyl glycol chitosan as a novel wound healing biomaterial. Carbohydr Polym 2021; 260:117808. [PMID: 33712154 DOI: 10.1016/j.carbpol.2021.117808] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 01/13/2021] [Accepted: 02/09/2021] [Indexed: 01/11/2023]
Abstract
In the present study, a novel synthetic tissue adhesive material capable of sealing wounds without the use of any crosslinking agent was developed by conjugating thermosensitive hexanoyl glycol chitosan (HGC) with gallic acid (GA). The degree of N-gallylation was manipulated to prepare GA-HGCs with different GA contents. GA-HGCs demonstrated thermosensitive sol-gel transition behavior and formed irreversible hydrogels upon natural oxidation of the pyrogallol moieties in GA, possibly leading to GA-HGC crosslinks through intra/intermolecular hydrogen bonding and chemical bonds. The GA-HGC hydrogels exhibited self-healing properties, high compressive strength, strong tissue adhesive strength and biodegradability that were adjustable according to the GA content. GA-HGCs also presented excellent biocompatibility and wound healing effects. The results of in vivo wound healing efficacy studies on GA-HGC hydrogels indicated that they significantly promote wound closure and tissue regeneration by upregulating growth factors and recruiting fibroblasts compared to the untreated control group.
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Affiliation(s)
- Seul Gi Park
- Departments of Polymer Science and Engineering & Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Mei-Xian Li
- School of Textile and Clothing, Nantong University, Nantong 226019, China; Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Woo Kyung Cho
- Department of Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea.
| | - Yoon Ki Joung
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; Division of Bio-Medical Science and Technology, Korea University of Science and Technology, Seoul 02792, Republic of Korea.
| | - Kang Moo Huh
- Departments of Polymer Science and Engineering & Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea.
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Li Y, Ma Z, Yang X, Gao Y, Ren Y, Li Q, Qu Y, Chen G, Zeng R. Investigation into the physical properties, antioxidant and antibacterial activity of Bletilla striata polysaccharide/chitosan membranes. Int J Biol Macromol 2021; 182:311-320. [PMID: 33839181 DOI: 10.1016/j.ijbiomac.2021.04.037] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/15/2021] [Accepted: 04/06/2021] [Indexed: 11/20/2022]
Abstract
Traditional wound dressings and formulations, such as cream, gauze, cotton wool and gel, are disadvantaged by short residence time, poor leakage and air permeability, poor patient compliance, and the minimal preservation in wet environment. This study is purposed to develop new biodegradable, antioxidant, and antimicrobial membranes based on two natural polysaccharides, Bletilla striata polysaccharide (BSP) and chitosan (CS). The developed films were characterized by SEM, FTIR spectroscopy, NMR spectroscopy and X-ray diffraction to examine surface morphology and internal structure, while TG analysis was conducted to explore the thermal properties of the films. The physical properties of the films were also improved significantly after the introduction of BSP. The biological activity of developed films was assessed by means of antioxidant and antibacterial assay for the further research as a potential wound dressing. The CCK-8 assay revealed that the developed films showed a significant improvement of cell viability, biocompatibility and non-toxicity. These researches demonstrated that BSP/CS films can be applied as suitable materials for the development of biomaterial matrix in novel wound dressing.
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Affiliation(s)
- Yuan Li
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China
| | - Zihao Ma
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China
| | - Xiao Yang
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China
| | - Yuanping Gao
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China
| | - Yan Ren
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China
| | - Qingmiao Li
- Sichuan Academy of Chinese Medicine Sciences, Chengdu 610041,China
| | - Yan Qu
- Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Gongzhen Chen
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou 646100, China
| | - Rui Zeng
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China.
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Injectable chitin hydrogels with self-healing property and biodegradability as stem cell carriers. Carbohydr Polym 2021; 256:117574. [DOI: 10.1016/j.carbpol.2020.117574] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 12/04/2020] [Accepted: 12/27/2020] [Indexed: 11/22/2022]
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Natural rosin modified carboxymethyl cellulose delivery system with lowered toxicity for long-term pest control. Carbohydr Polym 2021; 259:117749. [PMID: 33673979 DOI: 10.1016/j.carbpol.2021.117749] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 01/13/2021] [Accepted: 01/28/2021] [Indexed: 02/06/2023]
Abstract
The increasing world-wide demand for food has prompted the development of efficient and environmentally friendly pesticide formulations. In this article, we have prepared CMC-g-PRSG carrier based on two compounds from natural materials carboxymethyl cellulose (CMC) and rosin (RS). The model pesticide avermectin (AVM) was encapsulated through hydrophobic interaction, and self-assembled to form nanopesticide AVM@CMC-g-PRSG with an average particle size of 167 nm. The prepared nanopesticide displays enhanced dispersibility and stability of AVM in water, and can effectively adhere to the leaves to prevent loss. The release rate of AVM encapsulated in the nanocarrier can be controlled by adjusting pH, and AVM half-life under ultraviolet radiation shows a 3-fold increase allowing control of pests for prolonged periods of time in practical applications. Biological safety tests showed that AVM@CMC-g-PRSG effectively reduces the toxicity of AVM to aquatic animals. Therefore, the cheap and degradable carrier CMC-g-PRSG can improve the effect of hydrophobic pesticides.
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Zhang D, Ouyang Q, Hu Z, Lu S, Quan W, Li P, Chen Y, Li S. Catechol functionalized chitosan/active peptide microsphere hydrogel for skin wound healing. Int J Biol Macromol 2021; 173:591-606. [PMID: 33508359 DOI: 10.1016/j.ijbiomac.2021.01.157] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/11/2021] [Accepted: 01/23/2021] [Indexed: 12/18/2022]
Abstract
Chitosan-based thermosensitive hydrogels have been widely used in drug delivery and tissue engineering, but their poor bioactivity has limited their further applications. Integral active oyster peptide microspheres (OPM) with an average particle diameter of 3.9 μm were prepared with high encapsulation efficiency (72.8%) and loading capacity (11.9%), exhibiting desirable sustained release effects. Using catechol functionalized chitosan (CS-C) as the polymeric matrix, OPM as the filler, and β-sodium glycerophosphate (β-GP) as a thermal sensitizer, the thermosensitive hydrogel CS-C/OPM/β-GP was prepared. Besides, the application of the hydrogel on wound healing was studied, and its biosafety was evaluated. The results of cell migration in vitro showed that the cell migration rate of CS-C/OPM/β-GP reached 97.47 ± 5.41% within 48 h, indicating that the hydrogel accelerated the migration of L929 cells. As demonstrated in the mouse skin wound experiment, CS-C/OPM/β-GP hydrogel not only inhibited the aggregation of diversified inflammatory cells and accelerated the generation of collagen fibers and new blood vessels of the wound, but also enhanced the synthesis of total protein (TP) in granulation tissue, and up-regulated the expression of Ki-67 and VEGF in the injury, thereby achieving fast wound healing. Safety evaluation results showed that CS-C/OPM/β-GP hydrogel was not cytotoxic to L929 cells, and the hemolysis ratio was less than 5% within 1 mg/mL. In conclusion, CS-C/OPM/β-GP hydrogel is expected as a promising medical dressing for wound healing.
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Affiliation(s)
- Dongying Zhang
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524000, China
| | - Qianqian Ouyang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
| | - Zhang Hu
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China.
| | - Sitong Lu
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China
| | - Weiyan Quan
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China
| | - Puwang Li
- South Subtropical Crop Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, China.
| | - Yu Chen
- School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Sidong Li
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China
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Ma M, Zhong Y, Jiang X. An injectable photothermally active antibacterial composite hydroxypropyl chitin hydrogel for promoting the wound healing process through photobiomodulation. J Mater Chem B 2021; 9:4567-4576. [PMID: 34047310 DOI: 10.1039/d1tb00724f] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Prevention of bacterial infection, acceleration of wound closure and promotion of skin regeneration are crucial in the wound healing process. In this work, the photothermal activity of an injectable thermosensitive composite hydrogel based on hydroxypropyl chitin (HPCH), tannic acid (TA) and ferric ions (Fe3+) was studied. It was found that the photothermal efficiency was enhanced when the molar ratio of Fe3+/TA increased up to 20. The composite hydrogel possessed good cytocompatibility and hemocompatibility with a low dosage of the antibacterial agent TA. In vitro and in vivo antibacterial tests showed that the HPCH/TA/Fe hydrogel possessed an effective and rapid bactericidal effect with 10 minutes of near-infrared laser irradiation. Furthermore, the combination of a low-level laser therapy with the hydrogel is conducive to the acceleration of wound closure and promotion of skin tissue repair. Thus, the injectable photothermally active antibacterial composite hydrogel has great potential for the infected skin wound regeneration in clinical applications.
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Affiliation(s)
- Mengsi Ma
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, 299 Bayi Road, Wuhan 430072, P. R. China.
| | - Yalan Zhong
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, 299 Bayi Road, Wuhan 430072, P. R. China.
| | - Xulin Jiang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, 299 Bayi Road, Wuhan 430072, P. R. China.
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40
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Study on Seed Emergence and Seedling Growth of Artemisia Desertorum with Superabsorbent Polymers. Polymers (Basel) 2020; 12:polym12122873. [PMID: 33266159 PMCID: PMC7761205 DOI: 10.3390/polym12122873] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/21/2020] [Accepted: 11/28/2020] [Indexed: 11/16/2022] Open
Abstract
In this study, the emergence rate, emergence potential, root length, stem length, water consumption, and biomass around a root system were used as evaluation indexes, and we used the laboratory-prepared super absorbent resin watermelon rind (WMR)-p (AA-co-DAAM) (superabsorbent polymer 1-SAP1), WMR-p (AA-co-DAAM)/palygorskite (PGS) (SAP2) in a laboratory and commercially available water-retaining agents (SAPRX and SAPHDB) to assist the emergence of Artemisiadesertorum seeds and seedling growth; then, their water absorption and thermal stability were discussed. The results showed that the thermal stability of an SAP prepared in the laboratory and the water consumption during seed emergence, root length, and stem length after emergence were better than those of an SAP purchased on the market, and this information could help to promote the emergence and seedling growth of Artemisiadesertorum. While enhancing the drought resistance of plants, using a laboratory-produced SAP can effectively reduce the number of artificial irrigations.
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Georgiev GL, Borisova D, Petrov PD. Super‐macroporous composite cryogels based on biodegradable dextran and temperature‐responsive poly(
N
‐isopropylacrylamide). J Appl Polym Sci 2020. [DOI: 10.1002/app.49301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Dayana Borisova
- Section of Morphology of Microorganisms and Electron MicroscopyThe Stephan Angeloff Institute of Microbiology Sofia Bulgaria
| | - Petar D. Petrov
- Institute of PolymersBulgarian Academy of Sciences Sofia Bulgaria
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42
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Chitosan-Based Thermo-Sensitive Hydrogel Loading Oyster Peptides for Hemostasis Application. MATERIALS 2020; 13:ma13215038. [PMID: 33182319 PMCID: PMC7664874 DOI: 10.3390/ma13215038] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 11/02/2020] [Accepted: 11/04/2020] [Indexed: 02/01/2023]
Abstract
Uncontrolled massive hemorrhage is one of the principal causes of death in trauma emergencies. By using catechol-modified chitosan (CS-C) as the matrix material and β glycerol phosphate (β-GP) as a thermo-sensitive agent, chitosan-based thermo-sensitive hydrogel loading oyster peptides (CS-C/OP/β-GP) were prepared at physiological temperature. The hemostatic performance of CS-C/OP/β-GP hydrogel was tested in vivo and in vitro, and its biological safety was evaluated. The results showed that the in vitro coagulation time and blood coagulation index of CS-C/OP/β-GP hydrogel were better than those of a commercial gelatin sponge. Notably, compared with the gelatin sponge, CS-C/OP/β-GP hydrogel showed that the platelet adhesion and erythrocyte adsorption rates were 38.98% and 95.87% higher, respectively. Additionally, the hemostasis time in mouse liver injury was shortened by 19.5%, and the mass of blood loss in the mouse tail amputation model was reduced by 18.9%. The safety evaluation results demonstrated that CS-C/OP/β-GP had no cytotoxicity to L929 cells, and the hemolysis rates were less than 5% within 1 mg/mL, suggesting good biocompatibility. In conclusion, our results indicate that CS-C/OP/β-GP is expected to be a promising dressing in the field of medical hemostasis.
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Liao J, Huang H. Smart pH/magnetic sensitive Hericium erinaceus residue carboxymethyl chitin/Fe 3O 4 nanocomposite hydrogels with adjustable characteristics. Carbohydr Polym 2020; 246:116644. [PMID: 32747277 DOI: 10.1016/j.carbpol.2020.116644] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 05/09/2020] [Accepted: 06/11/2020] [Indexed: 10/24/2022]
Abstract
A smart hydrogel with pH/magnetic dual sensitivity was synthesized by in-situ synthesis of Fe3O4 inside carboxymethyl chitin hydrogel matrix prepared from Hericium erinaceus residue. The structure, pH/magnetic sensitivity, swelling and drug release behavior of the prepared hydrogels were investigated. The results showed that Fe3O4 nanoparticles were successfully synthesized and uniformly distributed within the hydrogels. The prepared hydrogels could be attracted by the magnet and exhibited sustained shrinkage behavior at low pH, with the desirable pH/magnetic sensitivity. The formed Fe3O4 could be developed inside the hydrogels by increasing the concentrations of precursor Fe2+/Fe3+ ions, and the magnetic sensitivity of hydrogels was enhanced, while the pH sensitivity and swelling degree were weakened. The Fe3O4 content-dependent behavior of the prepared hydrogels suggested the adjustable properties of hydrogels. The release of 5-Fu in simulated gastric and intestinal fluids followed the Fick diffusion mechanism and showed different release rates, indicating the pH-controlled drug release behavior.
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Affiliation(s)
- Jing Liao
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510641, China
| | - Huihua Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510641, China.
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44
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Samadian H, Maleki H, Allahyari Z, Jaymand M. Natural polymers-based light-induced hydrogels: Promising biomaterials for biomedical applications. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213432] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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45
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Jiang Y, Wang Y, Li Q, Yu C, Chu W. Natural Polymer-based Stimuli-responsive Hydrogels. Curr Med Chem 2020; 27:2631-2657. [PMID: 31755377 DOI: 10.2174/0929867326666191122144916] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 10/07/2019] [Accepted: 11/02/2019] [Indexed: 02/04/2023]
Abstract
The abilities of intelligent polymer hydrogels to change their structure and volume phase in response to external stimuli have provided new possibilities for various advanced technologies and great research and application potentials in the medical field. The natural polymer-based hydrogels have the advantages of environment-friendliness, rich sources and good biocompatibility. Based on their responsiveness to external stimuli, the natural polymer-based hydrogels can be classified into the temperature-responsive hydrogel, pH-responsive hydrogel, light-responsive hydrogel, electricresponsive hydrogel, redox-responsive hydrogel, enzyme-responsive hydrogel, magnetic-responsive hydrogel, multi-responsive hydrogel, etc. In this review, we have compiled some recent studies on natural polymer-based stimuli-responsive hydrogels, especially the hydrogels prepared from polysaccharides. The preparation methods, properties and applications of these hydrogels in the medical field are highlighted.
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Affiliation(s)
- Yuheng Jiang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China.,CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China.,Center for Nanochemistry, Peking University, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Ying Wang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Qin Li
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Chen Yu
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Wanli Chu
- Department of Burn and Plastic Surgery, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, China
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46
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Seo JW, Shin SR, Park YJ, Bae H. Hydrogel Production Platform with Dynamic Movement Using Photo-Crosslinkable/Temperature Reversible Chitosan Polymer and Stereolithography 4D Printing Technology. Tissue Eng Regen Med 2020; 17:423-431. [PMID: 32441008 PMCID: PMC7392993 DOI: 10.1007/s13770-020-00264-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/07/2020] [Accepted: 04/09/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Three-dimensional (3D) printing using hydrogel has made great strides when it comes to mimicking 3D artificial tissue in the medical field. However, most structures do not mimic the dynamic movement of the tissues. Without imitating dynamic movements, there are limitations on the extent to which the proper implementation of the tissue's own functions can be achieved. METHOD In this study, we intend to present an approach to solving this problem using hydroxybutyl methacrylated chitosan (HBC-MA), a photo-crosslinkable/temperature reversible chitosan polymer. In addition, stereolithography-3D (SLA-3D) printing technology was used, which is more likely to mimic the complex microstructure. As a control, a 3D structure made with pristine poly(ethylene glycol) dimethacrylate (PEG-DMA) was created, and a 4D structure was prepared by adding HBC-MA to poly(ethylene glycol) dimethacrylate (PEG-DMAP) resin. RESULTS HBC-MA caused the expansion of water into the polymer matrix at low temperature, and the 4D structure resulted in expansion of the polymer volume, generating dynamic movement due to the expansion of water. Conversely, as the temperature rose, deswelling occurred, followed by a decrease in the volume, showing a shape memory property of returning to the existing structure. Morphological, swelling, and mechanical analysis further confirmed the principle of dynamic movement. In addition, parameters were provided through calculation of the bending ratio angle (θ). CONCLUSION Through this, it is suggested that HBC-MA can be applied as a core polymer for SLA-4D printing, and has high potential for realizing the dynamic movement of tissue.
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Affiliation(s)
- Jeong Wook Seo
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Hwayang-dong, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Su Ryon Shin
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
| | - Yeon Joo Park
- Department Bioindustrial Technologies, College of Animal Bioscience and Technology, Konkuk University, Seoul, 05029, Republic of Korea
| | - Hojae Bae
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Hwayang-dong, Gwangjin-gu, Seoul, 05029, Republic of Korea.
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47
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Yu P, Liu Y, Jin R, Zhang P, Ding C, Jiang X, Xing J, Bi B, Xie J, Li J. Thermosensitive Polysaccharide Hydrogel As a Versatile Platform for Prolonged Salmon Calcitonin Release and Calcium Regulation. ACS Biomater Sci Eng 2020; 6:4077-4086. [PMID: 33463337 DOI: 10.1021/acsbiomaterials.0c00591] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The common pathological characteristic of osteoporosis and hypercalcemia is the disorder of calcium homeostasis. Currently, salmon calcitonin (sCT), a clinical regenerative medicine, is an attractive chioice to regulate calcium metabolism for alleviation of osteoporosis and hypercalcemia. Unfortunately, serum sCT is quickly cleared in vivo, leading to its short half-life. Here, we designed a versatile hydrogel, based on salmon calcitonin-oxidized calcium alginate (sCT-OCA) conjugate and hydroxypropyl chitin (HPCH). The release profile showed that sCT could be released from HPCH hydrogels loaded with sCT-OCA conjugate (sCT-OCA-HPCH) for at least 28 days with conformation stability. The cellular test demonstrated that the biocompatible sCT-OCA-HPCH, compared with sCT formulation, had capacity in up-regulating alkaline phosphatase activity (∼63% increase) and promoting calcium to deposit into extracellular matrix (∼42% increase). These results indicated that thermosensitive sCT-OCA-HPCH hydrogel herein is a versatile platform for many applications such as calcium metabolism regulation, osteoporosis treatment, and hypercalcemia therapy.
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Affiliation(s)
- Peng Yu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P.R. China
| | - Yanpeng Liu
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311200, P.R. China
| | - Ruitao Jin
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P.R. China
| | - Pan Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P.R. China
| | - Chunmei Ding
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P.R. China
| | - Xulin Jiang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, P.R. China
| | - Jiaqi Xing
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P.R. China
| | - Bo Bi
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, P.R. China
| | - Jing Xie
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P.R. China
| | - Jianshu Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P.R. China
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48
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Li J, Zhao Y, Jiang X. Quantitative analysis of protein in thermosensitive hydroxypropyl chitin for biomedical applications. Anal Biochem 2020; 599:113745. [DOI: 10.1016/j.ab.2020.113745] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 04/06/2020] [Accepted: 04/15/2020] [Indexed: 12/19/2022]
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49
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Kiliona KPS, Zhou M, Zhu Y, Lan P, Lin N. Preparation and surface modification of crab nanochitin for organogels based on thiol-ene click cross-linking. Int J Biol Macromol 2020; 150:756-764. [PMID: 32061849 DOI: 10.1016/j.ijbiomac.2020.02.125] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/04/2020] [Accepted: 02/12/2020] [Indexed: 11/25/2022]
Abstract
Incompatibility of chitin nanomaterials with organic solvents is challenging in the design of the desirable organogels. The long hydrocarbon chains were covalently grafted on the surface of nanochitins, with the attachment of reactive allyl groups and improved dispersion in organic solvents. The reactive thiol groups of poly (ethylene glycol) were introduced into the allyl-nanochitin suspensions to produce the organogels by the thiol-ene click reaction. Attributed to the UV-induced cross-linking between the soft segments of thiolated-PEG and the allyl-nanochitin, the stable organogels with the storage modulus higher than the loss modulus by one order of magnitude were obtained, exhibiting the significant phase transition and mechanical enhancement on the rheological behavior. The combination of crystalline allyl-nanochitin and polymeric chains played a crucial role in the construction of the micro-network, attributing to the stability and mechanical strength of the organogels.
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Affiliation(s)
- Kulang Primo Sokiri Kiliona
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, PR China
| | - Mengqin Zhou
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, PR China
| | - Yan Zhu
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, PR China
| | - Ping Lan
- Guangxi Key Laboratory of Polysaccharide Materials and Modification, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, Guangxi, PR China
| | - Ning Lin
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, PR China; Guangxi Key Laboratory of Polysaccharide Materials and Modification, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, Guangxi, PR China.
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50
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Xu Y, Xu Y, Bi B, Hou M, Yao L, Du Q, He A, Liu Y, Miao C, Liang X, Jiang X, Zhou G, Cao Y. A moldable thermosensitive hydroxypropyl chitin hydrogel for 3D cartilage regeneration in vitro and in vivo. Acta Biomater 2020; 108:87-96. [PMID: 32268237 DOI: 10.1016/j.actbio.2020.03.039] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 03/18/2020] [Accepted: 03/27/2020] [Indexed: 12/21/2022]
Abstract
Because of poor self-repair capacity, the repair of cartilage defect is always a great challenge in clinical treatment. In vitro cartilage regeneration provides a potential strategy for functional reconstruction of cartilage defect. Hydrogel has been known as an ideal cartilage regeneration scaffold. However, to date, in vitro cartilage regeneration based on hydrogel has not achieved satisfactory results. The current study explored the feasibility of in vitro 3D cartilage regeneration based on a moldable thermosensitive hydroxypropyl chitin (HPCH) hydrogel and its in vivo fate. The thermosensitive HPCH hydrogel was prepared and characterized. Goat auricular chondrocytes were encapsulated into the HPCH hydrogel to form a chondrocyte-hydrogel construct. The constructs were injected subcutaneously into nude mice or molded into different shapes for in vitro chondrogenic culture followed by in vivo implantation. The results demonstrated that the HPCH hydrogel possessed satisfactory gelation properties (gelation time < 18 s at 37 °C), biocompatibility (cell amount almost doubled within one week), and the ability to be applied as an injectable hydrogel for cartilage regeneration. All the constructs of in vitro culture basically maintained their original shapes (in vitro to initial: 110.8%) and displayed typical cartilaginous features with abundant lacunae and cartilage specific matrix deposition. These in vitro samples became more mature with prolonged in vivo implantation and largely maintained the original shape (in vivo to in vitro: 103.5%). These results suggested that the moldable thermosensitive HPCH hydrogel can serve as a promising scaffold for cartilage regeneration with defined shapes in vitro and in vivo. STATEMENT OF SIGNIFICANCE: Because of avascular and non-nervous characteristic of cartilage, in vitro regeneration plays an important role in reconstructing cartilage function. Hydrogel has been known as an ideal cartilage regeneration scaffold. However, to date, in vitro cartilage regeneration based on hydrogel has not achieved satisfactory results. The current study demonstrated that the chondrocyte-hydrogel construct generated by high density of chondrocytes encapsulated into a thermosensitive HPCH hydrogel could successfully regenerate in vitro typical cartilage-like tissue with defined shapes and further mature to form homogeneous cartilage with their original shapes after in vivo implantation. The current study indicated that the moldable thermosensitive HPCH hydrogel could serve as a promising scaffold for in vitro and in vivo cartilage regeneration with different shapes.
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