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Peng Y, Chen M, Wang J, Xie J, Wang C, Yang X, Huang X, Gou Z, Ye J. Tuning zinc content in wollastonite bioceramic endowing outstanding angiogenic and antibacterial functions beneficial for orbital reconstruction. Bioact Mater 2024; 36:551-564. [PMID: 39072286 PMCID: PMC11276934 DOI: 10.1016/j.bioactmat.2024.02.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 02/14/2024] [Accepted: 02/23/2024] [Indexed: 07/30/2024] Open
Abstract
Prosthetic eye is indispensable as filler after enucleation in patients with anophthalmia, whereas there are still many complications including postoperative infection and eye socket depression or extrusion during the conventional artificial eye material applications. Some Ca-silicate biomaterials showed superior bioactivity but their biological stability in vivo limit the biomedical application as long-term or permanent implants. Herein we aimed to understand the physicochemical and potential biological responses of zinc doping in wollastonite bioceramic used for orbital implants. The wollastonite powders with different zinc dopant contents (CSi-Znx) could be fabricated as porous implants with strut or curve surface pore geometries (cubic, IWP) via ceramic stereolithography. The experimental results indicated that, by increasing zinc-substituting-Ca ratio (up to 9%), the sintering and mechanical properties could be significantly enhanced, and meanwhile the bio-dissolution in vitro and biodegradability in vivo were thoroughly inhibited. In particular, an appreciable angiogenic activity and expected antibacterial efficacy (over 90 %) were synergistically achieved at 9 mol% Zn dopant. In the back-embedding and enucleation and implantation model experiments in rabbits, the superior continuous angiogenesis was corroborated from the 2D/3D fibrovascular reconstruction in the IWP-pore CSi-Zn9 and CSi-Zn13.5 groups within very short time stages. Totally, the present silicate-based bioceramic via selective Zn doping could produce outstanding structural stability and bifunctional biological responses which is especially valuable for developing the next-generation implants with vascular insertion and fixation in orbital reconstruction prothesis.
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Affiliation(s)
- Yiyu Peng
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, Provincial Key Lab of Ophthalmology, Hangzhou, 310009, China
| | - Menglu Chen
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, Provincial Key Lab of Ophthalmology, Hangzhou, 310009, China
| | - Jingyi Wang
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, Provincial Key Lab of Ophthalmology, Hangzhou, 310009, China
| | - Jiajun Xie
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, Provincial Key Lab of Ophthalmology, Hangzhou, 310009, China
| | - Changjun Wang
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, Provincial Key Lab of Ophthalmology, Hangzhou, 310009, China
| | - Xianyan Yang
- Bio-nanomaterials and Regenerative Medicine Research Division, Zhejiang-California International Nanosystem Institute, Zhejiang University, Hangzhou, 310058, China
| | - Xiaoling Huang
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, Provincial Key Lab of Ophthalmology, Hangzhou, 310009, China
| | - Zhongru Gou
- Bio-nanomaterials and Regenerative Medicine Research Division, Zhejiang-California International Nanosystem Institute, Zhejiang University, Hangzhou, 310058, China
| | - Juan Ye
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, Provincial Key Lab of Ophthalmology, Hangzhou, 310009, China
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Zhang Q, Yan K, Zheng X, Liu Q, Han Y, Liu Z. Research progress of photo-crosslink hydrogels in ophthalmology: A comprehensive review focus on the applications. Mater Today Bio 2024; 26:101082. [PMID: 38774449 PMCID: PMC11107262 DOI: 10.1016/j.mtbio.2024.101082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 04/19/2024] [Accepted: 05/03/2024] [Indexed: 05/24/2024] Open
Abstract
Hydrogel presents a three-dimensional polymer network with high water content. Over the past decade, hydrogel has developed from static material to intelligent material with controllable response. Various stimuli are involved in the formation of hydrogel network, among which photo-stimulation has attracted wide attention due to the advantages of controllable conditions, which has a good application prospect in the treatment of ophthalmic diseases. This paper reviews the application of photo-crosslink hydrogels in ophthalmology, focusing on the types of photo-crosslink hydrogels and their applications in ophthalmology, including drug delivery, tissue engineering and 3D printing. In addition, the limitations and future prospects of photo-crosslink hydrogels are also provided.
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Affiliation(s)
- Qinghe Zhang
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang Hunan 421001, China
| | - Ke Yan
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang Hunan 421001, China
| | - Xiaoqin Zheng
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang Hunan 421001, China
| | - Qiuping Liu
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang Hunan 421001, China
| | - Yi Han
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang Hunan 421001, China
| | - Zuguo Liu
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang Medical School, University of South China, Hengyang Hunan 421001, China
- Xiamen University Affiliated Xiamen Eye Center, Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Fujian Engineering and Research Center of Eye Regenerative Medicine, Eye Institute of Xiamen University, School of Medicine, Xiamen University, Xiamen Fujian 361005, China
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Jiao X, Wu F, Yue X, Yang J, Zhang Y, Qiu J, Ke X, Sun X, Zhao L, Xu C, Li Y, Yang X, Yang G, Gou Z, Zhang L. New insight into biodegradable macropore filler on tuning mechanical properties and bone tissue ingrowth in sparingly dissolvable bioceramic scaffolds. Mater Today Bio 2024; 24:100936. [PMID: 38234459 PMCID: PMC10792586 DOI: 10.1016/j.mtbio.2023.100936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 12/21/2023] [Accepted: 12/27/2023] [Indexed: 01/19/2024] Open
Abstract
Structural parameters of the implants such as shape, size, and porosity of the pores have been extensively investigated to promote bone tissue repair, however, it is unknown how the pore interconnectivity affects the bone growth behaviors in the scaffolds. Herein we systematically evaluated the effect of biodegradable bioceramics as a secondary phase filler in the macroporous networks on the mechanical and osteogenic behaviors in sparingly dissolvable bioceramic scaffolds. The pure hardystonite (HT) scaffolds with ∼550 & 800 μm in pore sizes were prepared by digital light processing, and then the Sr-doped calcium silicate (SrCSi) bioceramic slurry without and with 30 % organic porogens were intruded into the HT scaffolds with 800 μm pore size and sintered at 1150 °C. It indicated that the organic porogens could endow spherical micropores in the SrCSi filler, and the invasion of the SrCSi component could not only significantly enhance the compressive strength and modulus of the HT-based scaffolds, but also induce osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs). The pure HT scaffolds showed extremely slow bio-dissolution in Tris buffer after immersion for 8 weeks (∼1 % mass decay); in contrast, the SrCSi filler would readily dissolve into the aqueous medium and produced a steady mass decay (>6 % mass loss). In vivo experiments in rabbit femoral bone defect models showed that the pure HT scaffolds showed bone tissue ingrowth but the bone growth was impeded in the SrCSi-intruded scaffolds within 4 weeks; however, the group with higher porosity of SrCSi filler showed appreciable osteogenesis after 8 weeks of implantation and the whole scaffold was uniformly covered by new bone tissues after 16 weeks. These findings provide some new insights that the pore interconnectivity is not inevitable to impede bone ingrowth with the prolongation of implantation time, and such a highly biodegradable and bioactive filler intrusion strategy may be beneficial for optimizing the performances of scaffolds in bone regenerative medicine applications.
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Affiliation(s)
- Xiaoyi Jiao
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
- Department of Orthopaedics, The Third Hospital Affiliated to Wenzhou Medical University & Rui'an People's Hospital, Rui'an, 325200, China
| | - Fanghui Wu
- Department of Orthopaedics, The Third Hospital Affiliated to Wenzhou Medical University & Rui'an People's Hospital, Rui'an, 325200, China
| | - Xusong Yue
- Department of Orthopaedics, The Third Hospital Affiliated to Wenzhou Medical University & Rui'an People's Hospital, Rui'an, 325200, China
| | - Jun Yang
- Department of Orthopaedics, The Third Hospital Affiliated to Wenzhou Medical University & Rui'an People's Hospital, Rui'an, 325200, China
| | - Yan Zhang
- Bio-nanomaterials and Regenerative Medicine Research Division, Zhejiang-California International Nanosystem Institute, Zhejiang University, Hangzhou, 310058, China
| | - Jiandi Qiu
- Department of Orthopaedics, The Third Hospital Affiliated to Wenzhou Medical University & Rui'an People's Hospital, Rui'an, 325200, China
| | - Xiurong Ke
- Department of Orthopaedics, The Third Hospital Affiliated to Wenzhou Medical University & Rui'an People's Hospital, Rui'an, 325200, China
| | - Xiaoliang Sun
- Department of Orthopaedics, The Third Hospital Affiliated to Wenzhou Medical University & Rui'an People's Hospital, Rui'an, 325200, China
| | - Liben Zhao
- Department of Orthopaedics, The Third Hospital Affiliated to Wenzhou Medical University & Rui'an People's Hospital, Rui'an, 325200, China
| | - Chuchu Xu
- Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, 310006, China
| | - Yifan Li
- Department of Orthopaedics, The First Affiliated Hospital, School of Medicine of Zhejiang University, Hangzhou, 310003, China
| | - Xianyan Yang
- Bio-nanomaterials and Regenerative Medicine Research Division, Zhejiang-California International Nanosystem Institute, Zhejiang University, Hangzhou, 310058, China
| | - Guojing Yang
- Department of Orthopaedics, The Third Hospital Affiliated to Wenzhou Medical University & Rui'an People's Hospital, Rui'an, 325200, China
| | - Zhongru Gou
- Bio-nanomaterials and Regenerative Medicine Research Division, Zhejiang-California International Nanosystem Institute, Zhejiang University, Hangzhou, 310058, China
| | - Lei Zhang
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
- Department of Orthopaedics, The Third Hospital Affiliated to Wenzhou Medical University & Rui'an People's Hospital, Rui'an, 325200, China
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Ma J, Li Y, Mi Y, Gong Q, Zhang P, Meng B, Wang J, Wang J, Fan Y. Novel 3D printed TPMS scaffolds: microstructure, characteristics and applications in bone regeneration. J Tissue Eng 2024; 15:20417314241263689. [PMID: 39071895 PMCID: PMC11283664 DOI: 10.1177/20417314241263689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Accepted: 06/07/2024] [Indexed: 07/30/2024] Open
Abstract
Bone defect disease seriously endangers human health and affects beauty and function. In the past five years, the three dimension (3D) printed radially graded triply periodic minimal surface (TPMS) porous scaffold has become a new solution for repairing bone defects. This review discusses 3D printing technologies and applications for TPMS scaffolds. To this end, the microstructural effects of 3D printed TPMS scaffolds on bone regeneration were reviewed and the structural characteristics of TPMS, which can promote bone regeneration, were introduced. Finally, the challenges and prospects of using TPMS scaffolds to treat bone defects were presented. This review is expected to stimulate the interest of bone tissue engineers in radially graded TPMS scaffolds and provide a reliable solution for the clinical treatment of personalised bone defects.
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Affiliation(s)
- Jiaqi Ma
- Department of Oral and Maxillofacial Surgery, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Yumeng Li
- Department of Oral and Maxillofacial Surgery, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Yujing Mi
- Department of Orthodontics, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Qiannan Gong
- Shanxi Provincial People’s Hospital of Stomatology,Taiyuan,China
| | - Pengfei Zhang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, China
| | - Bing Meng
- Department of Oral and Maxillofacial Surgery, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Jue Wang
- Department of Prosthodontics, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Jing Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Oral Implants, School of Stomatology, The Fourth Military Medical University, Xi’an, People’s Republic of China
| | - Yawei Fan
- Department of Oral and Maxillofacial Surgery, First Hospital of Shanxi Medical University, Taiyuan, China
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Wang Y, Chen S, Liang H, Bai J, Wang M. Design and fabrication of biomimicking radially graded scaffolds via digital light processing 3D printing for bone regeneration. J Mater Chem B 2023; 11:9961-9974. [PMID: 37818766 DOI: 10.1039/d3tb01573d] [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: 10/13/2023]
Abstract
Scaffolds are an essential component in bone tissue engineering (BTE). However, most of the current BTE scaffolds are homogeneous structures and do not resemble the graded architectures of native bone. In the current study, four types of biomimicking scaffold designs based on gyroid (G) and primitive (P) units with radially graded pore sizes were devised, and scaffolds of these designs with two porosity groups (65 vol% and 75 vol%) were fabricated via digital light processing (DLP) 3D printing using biphasic calcium phosphate (BCP). Scaffolds of the gyroid-gyroid (G-G) design displayed better dimensional accuracy, compressive property, and cell proliferation rate than gyroid-primitive (G-P), primitive-gyroid (P-G), and primitive-primitive (P-P) scaffolds. Subsequently, graded G-G scaffolds with different porosities were fabricated and the relationship between compressive strength and porosity was determined. Furthermore, the sintered BCP bioceramics fabricated via current manufacturing process exhibited excellent biocompatibility and bioactivity, indicating their high potential for BTE.
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Affiliation(s)
- Yue Wang
- Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong.
| | - Shangsi Chen
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong.
| | - Haowen Liang
- Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Jiaming Bai
- Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Min Wang
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong.
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6
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Guo W, Li B, Li P, Zhao L, You H, Long Y. Review on vat photopolymerization additive manufacturing of bioactive ceramic bone scaffolds. J Mater Chem B 2023; 11:9572-9596. [PMID: 37727909 DOI: 10.1039/d3tb01236k] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Bone defects frequently occur in clinical settings due to trauma, disease, tumors, and other causes. The clinical use of autologous bones and allograft bone, however, has several limitations, such as limited sources, donor site morbidity, and immunological rejection. Nevertheless, there is newfound hope for regenerating and repairing bone defects through the development and integration of bone tissue engineering scaffold and additive manufacturing (AM) technology, also known as 3D printing. In particular, vat photopolymerization (VPP)-AM of bioactive ceramic bone scaffolds has garnered significant interest from interdisciplinary researchers in recent years. On the one hand, VPP-AM demonstrates clear advantages in printing accuracy and speed compared to other AM and non-AM technologies. On the other hand, bioactive ceramic materials exhibit superior bioactivity, biodegradability, and mechanical properties compared to metals, polymers, and bioinert ceramics, making them one of the most promising biomaterials for developing bone scaffolds. This paper reviews the research progress of VPP-AM of bioactive ceramic bone scaffolds, covering the process principles of various VPP-AM technologies, the performance requirements and preparation process of VPP ceramic slurry, the VPP process of bioactive ceramic bone scaffolds, and the research progress on different material types of VPP bioactive ceramic scaffolds. Firstly, we provide a brief introduction to the process principles and medical applications of various VPP technologies. Secondly, we explore the composition of the VPP ceramic slurry system, discussing the function of various components and their effects on printing quality. Thirdly, we delve into the performance requirements of bone scaffolds and summarize the research progress of VPP bioactive ceramic bone scaffolds of various material types including hydroxyapatite (HA), tricalcium phosphate (TCP), bioglass (BG), etc.; Finally, we discuss the challenges currently faced by VPP-AM bioactive ceramic bone scaffolds and propose possible development directions for the future.
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Affiliation(s)
- Wang Guo
- Guangxi Key Laboratory of Manufacturing System and Advanced Manufacturing Technology, School of Mechanical Engineering, Guangxi University, Nanning 530004, China.
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
| | - Bowen Li
- Guangxi Key Laboratory of Manufacturing System and Advanced Manufacturing Technology, School of Mechanical Engineering, Guangxi University, Nanning 530004, China.
| | - Ping Li
- Guangxi Key Laboratory of Manufacturing System and Advanced Manufacturing Technology, School of Mechanical Engineering, Guangxi University, Nanning 530004, China.
| | - Lei Zhao
- Guangxi Key Laboratory of Manufacturing System and Advanced Manufacturing Technology, School of Mechanical Engineering, Guangxi University, Nanning 530004, China.
| | - Hui You
- Guangxi Key Laboratory of Manufacturing System and Advanced Manufacturing Technology, School of Mechanical Engineering, Guangxi University, Nanning 530004, China.
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
| | - Yu Long
- Guangxi Key Laboratory of Manufacturing System and Advanced Manufacturing Technology, School of Mechanical Engineering, Guangxi University, Nanning 530004, China.
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
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Dehghanpour P, Emadi R, Salimijazi H. Influence of mechanochemically fabricated nano-hardystonite reinforcement in polycaprolactone scaffold for potential use in bone tissue engineering: Synthesis and characterization. J Mech Behav Biomed Mater 2023; 146:106100. [PMID: 37660447 DOI: 10.1016/j.jmbbm.2023.106100] [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: 07/06/2023] [Revised: 08/27/2023] [Accepted: 08/29/2023] [Indexed: 09/05/2023]
Abstract
Bone tissue engineering (BTE) has gained significant attention for the regeneration of bone tissue, particularly for critical-size bone defects. The aim of this research was first to synthesize nanopowders of hardystonite (HT) through ball milling and then to manufacture composite scaffolds for BTE use out of polycaprolactone (PCL) containing 0, 3, 5, and 10 wt% HT by electrospinning method. The crystallite size of the synthesized HT nanopowders was 42.8 nm. including up to 5 wt% HT into PCL scaffolds resulted in significant improvements, such as a reduction in the fiber diameter from 186.457±15.74 to 150.021±21.99 nm, a decrease in porosity volume from 85.2±2.5 to 80.3±3.3 %, an improvement in the mechanical properties (ultimate tensile strength: 5.7±0.2 MPa, elongation: 47.5±3.5 %, tensile modulus: 32.7±0.9 MPa), an improvement in the hydrophilicity, and biodegradability. Notably, PCL/5%HT exhibited the maximum cell viability (194±14 %). Additionally, following a 4-week of submersion in simulated body fluid (SBF), the constructed PCL/HT composite scaffolds showed a remarkable capacity to stimulate the development of hydroxyapatite (HA), which increased significantly for the 5 wt% HT scaffolds. However, at 10 wt% HT, nanopowder agglomeration led to an increase in the fiber diameter and a decrease in the mechanical characteristics. Collectively, the PCL/5%HT composite scaffolds can therefore help with the regeneration of the critical-size bone defects and offer tremendous potential for BTE applications.
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Affiliation(s)
- Pegah Dehghanpour
- Department of Materials Engineering, Isfahan University of Technology, Isfahan, 8415683111, Iran.
| | - Rahmatollah Emadi
- Department of Materials Engineering, Isfahan University of Technology, Isfahan, 8415683111, Iran.
| | - Hamidreza Salimijazi
- Department of Materials Engineering, Isfahan University of Technology, Isfahan, 8415683111, Iran
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Wang B, Zhao P, Zhang P, Hu J, Liu Y, Xie M, He Y. 3D-printed tortuous vessels with Photodissociable and morphology-controllable ink. J Biomater Appl 2023:8853282231183984. [PMID: 37485893 DOI: 10.1177/08853282231183984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
Acute ischemic stroke (AIS) is a high mortality cerebrovascular disease associated with vessel curvature. However, the relevant mechanism remains unclear due to a lack of appropriate tortuous vascular models to investigate and validate. This study explores the combination of projection-based 3D bioprinting (PBP) with photo-stimulus-responsive techniques to fabricate a sodium alginate (SA)/acrylamide (AAM) hydrogel vascular scaffold capable of bending deformation. The coordination of Fe3+ ions with carboxylate groups in the alginate chains of the vascular scaffold acts as a molecular switch, which can be dissociated through photoreduction to enable the deformation response. Fourier Transform Infrared (FTIR) and X-ray Photoelectron Spectroscopy (XPS) results verified the deformation principle. By subjecting the scaffold to UV light exposure, Fe3+ is reduced to Fe2+ in spatially selected regions, resulting in the release of strain and subsequent deformation. Furthermore, it also controlled the degree and direction of curvature of the vessels. The cell seeding experiment verified that the vascular scaffold showed excellent biocompatibility. Overall, our approach could be used to generate an in vitro model of curved vascular pathology to investigate the pathogenesis and provide new directions for the diagnosis and treatment of vascular diseases in the future.
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Affiliation(s)
- Biling Wang
- School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang, China
- Engineering for Life Group (EFL), Suzhou, China
| | - Pengcheng Zhao
- School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang, China
| | - Peng Zhang
- Engineering for Life Group (EFL), Suzhou, China
| | - Jun Hu
- School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang, China
| | - Yande Liu
- School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang, China
| | - Mingjun Xie
- Plastic and Reconstructive Surgery Center, Department of Plastic and Reconstructive Surgery, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Yong He
- School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang, China
- Engineering for Life Group (EFL), Suzhou, China
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, China
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Li Y, Li J, Jiang S, Zhong C, Zhao C, Jiao Y, Shen J, Chen H, Ye M, Zhou J, Yang X, Gou Z, Xu S, Shen M. The design of strut/TPMS-based pore geometries in bioceramic scaffolds guiding osteogenesis and angiogenesis in bone regeneration. Mater Today Bio 2023; 20:100667. [PMID: 37273795 PMCID: PMC10238647 DOI: 10.1016/j.mtbio.2023.100667] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 05/06/2023] [Accepted: 05/14/2023] [Indexed: 06/06/2023] Open
Abstract
The pore morphology design of bioceramic scaffolds plays a substantial role in the induction of bone regeneration. Specifically, the effects of different scaffold pore geometry designs on angiogenesis and new bone regeneration remain unclear. Therefore, we fabricated Mg/Sr co-doped wollastonite bioceramic (MS-CSi) scaffolds with three different pore geometries (gyroid, cylindrical, and cubic) and compared their effects on osteogenesis and angiogenesis in vitro and in vivo. The MS-CSi scaffolds were fabricated by digital light processing (DLP) printing technology. The pore structure, mechanical properties, and degradation rate of the scaffolds were investigated. Cell proliferation on the scaffolds was evaluated using CCK-8 assays while angiogenesis was assessed using Transwell migration assays, tube formation assays, and immunofluorescence staining. The underlying mechanism was explored by western blotting. Osteogenic ability of scaffolds was evaluated by alkaline phosphatase (ALP) staining, western blotting, and qRT-PCR. Subsequently, a rabbit femoral defect model was prepared to compare differences in the scaffolds in osteogenesis and angiogenesis in vivo. Cell culture experiments showed that the gyroid pore scaffold downregulated YAP/TAZ phosphorylation and enhanced YAP/TAZ nuclear translocation, thereby promoting proliferation, migration, tube formation, and high expression of CD31 in human umbilical vein endothelial cells (HUVECs) while strut-based (cubic and cylindrical pore) scaffolds promoted osteogenic differentiation in bone marrow mesenchymal stem cells and upregulation of osteogenesis-related genes. The gyroid pore scaffolds were observed to facilitate early angiogenesis in the femoral-defect model rabbits while the strut-based scaffolds promoted the formation of new bone tissue. Our study indicated that the pore geometries and pore curvature characteristics of bioceramic scaffolds can be precisely tuned for enhancing both osteogenesis and angiogenesis. These results may provide new ideas for the design of bioceramic scaffolds for bone regeneration.
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Affiliation(s)
- Yifan Li
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, PR China
| | - Jiafeng Li
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, PR China
| | - Shuai Jiang
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, PR China
| | - Cheng Zhong
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, PR China
| | - Chenchen Zhao
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, PR China
| | - Yang Jiao
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, PR China
| | - Jian Shen
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, PR China
| | - Huaizhi Chen
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, PR China
| | - Meihan Ye
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, PR China
| | - Jiayu Zhou
- Affiliated Mental Health Centre & Hangzhou Seventh People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310013, PR China
| | - Xianyan Yang
- Bio-nanomaterials and Regenerative Medicine Research Division, Zhejiang-California International Nanosystem Institute, Zhejiang University, Hangzhou, 310058, PR China
| | - Zhongru Gou
- Bio-nanomaterials and Regenerative Medicine Research Division, Zhejiang-California International Nanosystem Institute, Zhejiang University, Hangzhou, 310058, PR China
| | - Sanzhong Xu
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, PR China
| | - Miaoda Shen
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, PR China
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Zou R, Bi L, Huang Y, Wang Y, Wang Y, Li L, Liu J, Feng L, Jiang X, Deng B. A biocompatible silicon nitride dental implant material prepared by digital light processing technology. J Mech Behav Biomed Mater 2023; 141:105756. [PMID: 36898355 DOI: 10.1016/j.jmbbm.2023.105756] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 02/27/2023] [Accepted: 03/03/2023] [Indexed: 03/06/2023]
Abstract
For decades, titanium has been the preferred material for dental implant fabrication. However, metallic ions and particles can cause hypersensitivity and aseptic loosening. The growing demand for metal-free dental restorations has also promoted the development of ceramic-based dental implants, such as silicon nitride. In this study, silicon nitride (Si3N4) dental implants were fabricated for biological engineering by photosensitive resin based digital light processing (DLP) technology, comparable to conventionally produced Si3N4 ceramics. The flexural strength was (770 ± 35) MPa by the three-point bending method, and the fracture toughness was (13.3 ± 1.1) MPa · m1/2 by the unilateral pre-cracked beam method. The elastic modulus measured by the bending method was (236 ± 10) GPa. To confirm whether the prepared Si3N4 ceramics possessed good biocompatibility, in vitro biological experiments were performed with the fibroblast cell line L-929, and preferable cell proliferation and apoptosis were observed at the initial stages. Hemolysis test, oral mucous membrane irritation test, and acute systemic toxicity test (oral route) further confirmed that the Si3N4 ceramics did not exhibit hemolysis reaction, oral mucosal stimulation, or systemic toxicity. The findings indicate that Si3N4 dental implant restorations with personalized structures prepared by DLP technology have good mechanical properties and biocompatibility, which has great application potential in the future.
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Affiliation(s)
- Rongfang Zou
- Chinese PLA Medical School, Beijing, 100853, China; Department of Stomatology, the First Medical Center, Chinese PLA General Hospital, Beijing, 100853, China
| | - Lunan Bi
- Shandong Industrial Ceramic Research and Design Institute Co. Ltd., Zibo, 255000, Shandong, China
| | - Yang Huang
- Department of Stomatology, the First Medical Center, Chinese PLA General Hospital, Beijing, 100853, China
| | - Yadi Wang
- Chinese PLA Medical School, Beijing, 100853, China
| | - Yan Wang
- Beijing Institute of Basic Medical Science, Beijing, 100850, China
| | - Lin Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, PR China
| | - Jiayin Liu
- Chinese PLA Medical School, Beijing, 100853, China
| | - Lu Feng
- Chinese PLA Medical School, Beijing, 100853, China
| | - Xiaoxia Jiang
- Beijing Institute of Basic Medical Science, Beijing, 100850, China.
| | - Bin Deng
- Department of Stomatology, the First Medical Center, Chinese PLA General Hospital, Beijing, 100853, China.
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Physicochemical Properties and Antibacterial Activity of Gellan Gum Incorporating Zinc Oxide/Carbon Nanotubes Bionanocomposite Film for Wound Healing. Bioinorg Chem Appl 2022; 2022:3158404. [PMID: 36072280 PMCID: PMC9441347 DOI: 10.1155/2022/3158404] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/09/2022] [Indexed: 11/18/2022] Open
Abstract
Wound healing dressing based on a natural polymer of gellan gum incorporating zinc oxide nanoparticles and multiwall carbon nanotubes (GG/ZnONP + MWCNT) bionanocomposite film was fabricated via the solution casting method. The physicochemical properties of the film were characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR), and scanning electron microscopy (SEM). Moreover, the antibacterial properties of the bionanocomposite film were investigated for wound healing applications. The characterization results confirmed the reinforcement of the gellan gum (GG) matrix with zinc oxide nanoparticles (ZnONP) and multiwall carbon nanotubes (MWCNT), as an amorphous GG/ZnONP + MWCNT bionanocomposite film was obtained. SEM morphological analysis shows that the addition of ZnONP and MWCNT nanofillers changed the film microstructure into a sponge-like structure that is more suitable for fluid uptake and thus more useful for wound healing. The GG/ZnONP + MWCNT bionanocomposite film demonstrated good antibacterial activity against all strains tested. Furthermore, macroscopic analysis shows that the wound treated with GG/ZnONP + MWCNT bionanocomposite film recovered completely (100%) in 14 days, compared to pure GG film (90.76%) and negative control (77.40%). As a result, the GG/ZnONP + MWCNT bionanocomposite film could be a promising wound dressing material.
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Holkar K, Kale V, Ingavle G. Well-orchestrated physico-chemical and biological factors for enhanced secretion of osteogenic and angiogenic extracellular vesicles by mesenchymal stem cells in a 3D culture format. Biomater Sci 2022; 10:4458-4473. [PMID: 35815723 DOI: 10.1039/d2bm00750a] [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
The secretome of mesenchymal stem cells (MSCs) is being studied for its regenerative potential for the treatment of various disorders, including bone diseases. However, mimicking the physiological parameters of native bone could further improve MSCs' secretory profile. The proteomic analysis revealed that MSCs have a diverse secretory profile depending on the cell formats used to grow them, such as two-dimensional (2D) or three-dimensional (3D) microenvironments. Stem cells are given biochemical and biophysical stimuli in a 3D milieu that mimics in vivo situations. Compared to the gold standard monolayer culture, extracellular vesicles (EVs) released under 3D conditions improved the EV cargo numerically and qualitatively. The higher requirements of EVs in clinical trials with consistent therapeutic potential are challenging. This review discusses the impact of cell culture formats on the regenerative potential of MSCs, specifically in bone regeneration. The poor yield and heterogeneity issues have hampered the therapeutic usage of EVs. Therefore, this review further explores various engineering approaches that could enhance EVs' scalability from MSCs and their therapeutic effectiveness beyond their native utility in bone tissue regeneration. This review also highlights some of the upcoming 3D approaches/models that might be useful for the enhanced secretion of therapeutic EVs from stem cells. Finally, we discuss possible future directions and conclusions in this domain.
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Affiliation(s)
- Ketki Holkar
- Symbiosis Centre for Stem Cell Research (SCSCR), Symbiosis International (Deemed University), Pune 412115, India. .,Symbiosis School of Biological Sciences (SSBS), Symbiosis International (Deemed University), Pune 412115, India
| | - Vaijayanti Kale
- Symbiosis Centre for Stem Cell Research (SCSCR), Symbiosis International (Deemed University), Pune 412115, India. .,Symbiosis School of Biological Sciences (SSBS), Symbiosis International (Deemed University), Pune 412115, India
| | - Ganesh Ingavle
- Symbiosis Centre for Stem Cell Research (SCSCR), Symbiosis International (Deemed University), Pune 412115, India. .,Symbiosis School of Biological Sciences (SSBS), Symbiosis International (Deemed University), Pune 412115, India
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