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Wang S, Wen X, Fan Z, Ding X, Wang Q, Liu Z, Yu W. Research advancements on nerve guide conduits for nerve injury repair. Rev Neurosci 2024; 35:627-637. [PMID: 38517315 DOI: 10.1515/revneuro-2023-0093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 11/19/2023] [Indexed: 03/23/2024]
Abstract
Peripheral nerve injury (PNI) is one of the most serious causes of disability and loss of work capacity of younger individuals. Although PNS has a certain degree of regeneration, there are still challenges like disordered growth, neuroma formation, and incomplete regeneration. Regarding the management of PNI, conventional methods such as surgery, pharmacotherapy, and rehabilitative therapy. Treatment strategies vary depending on the severity of the injury. While for the long nerve defect, autologous nerve grafting is commonly recognized as the preferred surgical approach. Nevertheless, due to lack of donor sources, neurological deficits and the low regeneration efficiency of grafted nerves, nerve guide conduits (NGCs) are recognized as a future promising technology in recent years. This review provides a comprehensive overview of current treatments for PNI, and discusses NGCs from different perspectives, such as material, design, fabrication process, and composite function.
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Affiliation(s)
- Shoushuai Wang
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Xinggui Wen
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Zheyuan Fan
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Xiangdong Ding
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Qianqian Wang
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Zhongling Liu
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Wei Yu
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
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2
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Li F, Li X, Dai S, Yang Z, Bao Z, Wang S, Zhang Z, Midgley AC, Fan M, Zhu MF, Dong X, Kong D. Efficient Light-Based Bioprinting via Rutin Nanoparticle Photoinhibitor for Advanced Biomedical Applications. ACS NANO 2024. [PMID: 39102149 DOI: 10.1021/acsnano.4c05380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/06/2024]
Abstract
Digital light processing (DLP) bioprinting, known for its high resolution and speed, enables the precise spatial arrangement of biomaterials and has become integral to advancing tissue engineering and regenerative medicine. Nevertheless, inherent light scattering presents significant challenges to the fidelity of the manufactured structures. Herein, we introduce a photoinhibition strategy based on Rutin nanoparticles (Rnps), attenuating the scattering effect through concurrent photoabsorption and free radical reaction. Compared to the widely utilized biocompatible photoabsorber tartrazine (Tar), Rnps-infused bioink enhanced printing speed (1.9×), interlayer homogeneity (58% less overexposure), resolution (38.3% improvement), and print tolerance (3× high-precision range) to minimize trial-and-error. The biocompatible and antioxidative Rnps significantly improved cytocompatibility and exhibited resistance to oxidative stress-induced damage in printed constructs, as demonstrated with human induced pluripotent stem cell-derived endothelial cells (hiPSC-ECs). The related properties of Rnps facilitate the facile fabrication of multimaterial, heterogeneous, and cell-laden biomimetic constructs with intricate structures. The developed photoinhibitor, with its profound adaptability, promises wide biomedical applications tailored to specific biological requirements.
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Affiliation(s)
- Feiyi Li
- State Key Laboratory of Medicinal Chemical Biology, The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin 300350, China
| | - Xinyue Li
- State Key Laboratory of Medicinal Chemical Biology, The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin 300350, China
| | - Shuxin Dai
- State Key Laboratory of Medicinal Chemical Biology, The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin 300350, China
| | - Zhuangzhuang Yang
- State Key Laboratory of Medicinal Chemical Biology, The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin 300350, China
| | - Zheheng Bao
- Department of Orthopaedics, Tianjin First Central Hospital, School of Medicine, Nankai University, Tianjin 300192, China
| | - Shuwei Wang
- State Key Laboratory of Medicinal Chemical Biology, The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin 300350, China
| | - Zijian Zhang
- Department of Orthopaedics, Tianjin First Central Hospital, School of Medicine, Nankai University, Tianjin 300192, China
- School of Medicine, Nankai University, Tianjin 300071, China
| | - Adam C Midgley
- State Key Laboratory of Medicinal Chemical Biology, The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin 300350, China
| | - Meng Fan
- Department of Orthopaedics, Tianjin First Central Hospital, School of Medicine, Nankai University, Tianjin 300192, China
- School of Medicine, Nankai University, Tianjin 300071, China
| | - Mei Feng Zhu
- State Key Laboratory of Medicinal Chemical Biology, The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin 300350, China
- Haihe Laboratory of Sustainable Chemical Transformations, Keyan West Road, Tianjin 300192, China
| | - Xianhao Dong
- State Key Laboratory of Medicinal Chemical Biology, The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin 300350, China
- Haihe Laboratory of Sustainable Chemical Transformations, Keyan West Road, Tianjin 300192, China
| | - Deling Kong
- State Key Laboratory of Medicinal Chemical Biology, The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin 300350, China
- Haihe Laboratory of Sustainable Chemical Transformations, Keyan West Road, Tianjin 300192, China
- Institute of Transplantation Medicine, Nankai University, Tianjin 300192, China
- Nankai International Advanced Research Institute, Nankai University, Shenzhen 518045, China
- Xu Rongxiang Regeneration Life Science Center, Nankai University, Tianjin 300071, China
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3
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Sun M, Lu Y, Zhang H, Jiang W, Wang W, Huang X, Zhang S, Xiang D, Tang B, Chen Y, Chen T, Lian C, Zhang J. Multifunctional Composite Scaffold with Nanosilver, Graphene Oxide, and Macrophage Membrane Vesicles for Sequential Treatment of Infected Bone Defects. Adv Healthc Mater 2024; 13:e2400346. [PMID: 38684106 DOI: 10.1002/adhm.202400346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 04/02/2024] [Indexed: 05/02/2024]
Abstract
The management of infected bone defects poses a significant clinical challenge, and current treatment modalities exhibit various limitations. This study focuses on the development of a multifunctional composite scaffold comprising nanohydroxyapatite/polyethyleneglycol diacrylate matrix, silver nanoparticles, graphene oxide (GO), sodium alginate, and M2-type macrophage membrane vesicles (MVs) to enhance the healing of infected bone defects. The composite scaffold demonstrates several key features: first, it releases sufficient quantities of silver ions to effectively eliminate bacteria; second, the controlled release of MVs leads to a notable increase in M2-type macrophages, thereby significantly mitigating the inflammatory response. Additionally, GO acts synergistically with nanohydroxyapatite to enhance osteoinductive activity, thereby fostering bone regeneration. Through meticulous in vitro and in vivo investigations, the composite scaffold exhibits broad-spectrum antimicrobial effects, robust immunomodulatory capabilities, and enhanced osteoinductive activity. This multifaceted composite scaffold presents a promising approach for the sequential treatment of infected bone defects, addressing the antimicrobial, immunomodulatory, and osteogenic aspects. This study introduces innovative perspectives and offers new and effective treatment alternatives for managing infected bone defects.
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Affiliation(s)
- Mingjie Sun
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yang Lu
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Hongrui Zhang
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Weiqian Jiang
- Department of Orthopedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 401336, China
| | - Wenzhao Wang
- Department of Orthopedics, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Xiao Huang
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Shichun Zhang
- Department of Orthopedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 401336, China
| | - Dulei Xiang
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Boyu Tang
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yu Chen
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Tingmei Chen
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Chengjie Lian
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Jian Zhang
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
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4
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Yu L, Bennett CJ, Lin CH, Yan S, Yang J. Scaffold design considerations for peripheral nerve regeneration. J Neural Eng 2024; 21:041001. [PMID: 38996412 DOI: 10.1088/1741-2552/ad628d] [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: 01/26/2024] [Accepted: 07/12/2024] [Indexed: 07/14/2024]
Abstract
Peripheral nerve injury (PNI) represents a serious clinical and public health problem due to its high incurrence and poor spontaneous recovery. Compared to autograft, which is still the best current practice for long-gap peripheral nerve defects in clinics, the use of polymer-based biodegradable nerve guidance conduits (NGCs) has been gaining momentum as an alternative to guide the repair of severe PNI without the need of secondary surgery and donor nerve tissue. However, simple hollow cylindrical tubes can barely outperform autograft in terms of the regenerative efficiency especially in critical sized PNI. With the rapid development of tissue engineering technology and materials science, various functionalized NGCs have emerged to enhance nerve regeneration over the past decades. From the aspect of scaffold design considerations, with a specific focus on biodegradable polymers, this review aims to summarize the recent advances in NGCs by addressing the onerous demands of biomaterial selections, structural designs, and manufacturing techniques that contributes to the biocompatibility, degradation rate, mechanical properties, drug encapsulation and release efficiency, immunomodulation, angiogenesis, and the overall nerve regeneration potential of NGCs. In addition, several commercially available NGCs along with their regulation pathways and clinical applications are compared and discussed. Lastly, we discuss the current challenges and future directions attempting to provide inspiration for the future design of ideal NGCs that can completely cure long-gap peripheral nerve defects.
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Affiliation(s)
- Le Yu
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, United States of America
| | - Carly Jane Bennett
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, United States of America
| | - Chung-Hsun Lin
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, United States of America
| | - Su Yan
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, United States of America
| | - Jian Yang
- Biomedical Engineering Program, Westlake University, Hangzhou, Zhejiang 310030, People's Republic of China
- Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang 310030, People's Republic of China
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5
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Li L, Chu Z, Li S, Zheng T, Wei S, Zhao Y, Liu P, Lu Q. BDNF-loaded chitosan-based mimetic mussel polymer conduits for repair of peripheral nerve injury. Front Cell Dev Biol 2024; 12:1431558. [PMID: 39011392 PMCID: PMC11246889 DOI: 10.3389/fcell.2024.1431558] [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: 05/12/2024] [Accepted: 06/11/2024] [Indexed: 07/17/2024] Open
Abstract
Care for patients with peripheral nerve injury is multifaceted, as traditional methods are not devoid of limitations. Although the utilization of neural conduits shows promise as a therapeutic modality for peripheral nerve injury, its efficacy as a standalone intervention is limited. Hence, there is a pressing need to investigate a composite multifunctional neural conduit as an alternative treatment for peripheral nerve injury. In this study, a BDNF-loaded chitosan-based mimetic mussel polymer conduit was prepared. Its unique adhesion characteristics allow it to be suture-free, improve the microenvironment of the injury site, and have good antibacterial properties. Researchers utilized a rat sciatic nerve injury model to evaluate the progression of nerve regeneration at the 12-week postoperative stage. The findings of this study indicate that the chitosan-based mimetic mussel polymer conduit loaded with BDNF had a substantial positive effect on myelination and axon outgrowth. The observed impact demonstrated a favorable outcome in terms of sciatic nerve regeneration and subsequent functional restoration in rats with a 15-mm gap. Hence, this approach is promising for nerve tissue regeneration during peripheral nerve injury.
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Affiliation(s)
- Lei Li
- Department of Adult Joint Reconstructive Surgery, Beijing Jishuitan Hospital, Capital Medical University, Beijing, China
| | - Ziyue Chu
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Shihao Li
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Tong Zheng
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Shusheng Wei
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Yunpeng Zhao
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Peilai Liu
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Qunshan Lu
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China
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6
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Cui H, Zhu W, Miao S, Sarkar K, Zhang LG. 4D Printed Nerve Conduit with In Situ Neurogenic Guidance for Nerve Regeneration. Tissue Eng Part A 2024; 30:293-303. [PMID: 37847181 DOI: 10.1089/ten.tea.2023.0194] [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: 10/18/2023] Open
Abstract
Nerve repair poses a significant challenge in the field of tissue regeneration. As a bioengineered therapeutic method, nerve conduits have been developed to address damaged nerve repair. However, despite their remarkable potential, it is still challenging to encompass complex physiologically microenvironmental cues (both biophysical and biochemical factors) to synergistically regulate stem cell differentiation within the implanted nerve conduits, especially in a facile manner. In this study, a neurogenic nerve conduit with self-actuated ability has been developed by in situ immobilization of neurogenic factors onto printed architectures with aligned microgrooves. One objective was to facilitate self-entubulation, ultimately enhancing nerve repairs. Our results demonstrated that the integration of topographical and in situ biological cues could accurately mimic native microenvironments, leading to a significant improvement in neural alignment and enhanced neural differentiation within the conduit. This innovative approach offers a revolutionary method for fabricating multifunctional nerve conduits, capable of modulating neural regeneration efficiently. It has the potential to accelerate the functional recovery of injured neural tissues, providing a promising avenue for advancing nerve repair therapies.
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Affiliation(s)
- Haitao Cui
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, China
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, District of Columbia, USA
| | - Wei Zhu
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, District of Columbia, USA
| | - Shida Miao
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, District of Columbia, USA
| | - Kausik Sarkar
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, District of Columbia, USA
| | - Lijie Grace Zhang
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, District of Columbia, USA
- Department of Electrical and Computer Engineering, The George Washington University, Washington, District of Columbia, USA
- Department of Biomedical Engineering, The George Washington University, Washington, District of Columbia, USA
- Department of Medicine, The George Washington University, Washington, District of Columbia, USA
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Sun R, Lang Y, Chang MW, Zhao M, Li C, Liu S, Wang B. Leveraging Oriented Lateral Walls of Nerve Guidance Conduit with Core-Shell MWCNTs Fibers for Peripheral Nerve Regeneration. Adv Healthc Mater 2024; 13:e2303867. [PMID: 38258406 DOI: 10.1002/adhm.202303867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Indexed: 01/24/2024]
Abstract
Peripheral nerve regeneration and functional recovery rely on the chemical, physical, and structural properties of nerve guidance conduits (NGCs). However, the limited support for long-distance nerve regeneration and axonal guidance has hindered the widespread use of NGCs. This study introduces a novel nerve guidance conduit with oriented lateral walls, incorporating multi-walled carbon nanotubes (MWCNTs) within core-shell fibers prepared in a single step using a modified electrohydrodynamic (EHD) printing technique to promote peripheral nerve regeneration. The structured conduit demonstrated exceptional stability, mechanical properties, and biocompatibility, significantly enhancing the functionality of NGCs. In vitro cell studies revealed that RSC96 cells adhered and proliferated effectively along the oriented fibers, demonstrating a favorable response to the distinctive architectures and properties. Subsequently, a rat sciatic nerve injury model demonstrated effective efficacy in promoting peripheral nerve regeneration and functional recovery. Tissue analysis and functional testing highlighted the significant impact of MWCNT concentration in enhancing peripheral nerve regeneration and confirming well-matured aligned axonal growth, muscle recovery, and higher densities of myelinated axons. These findings demonstrate the potential of oriented lateral architectures with coaxial MWCNT fibers as a promising approach to support long-distance regeneration and encourage directional nerve growth for peripheral nerve repair in clinical applications.
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Affiliation(s)
- Renyuan Sun
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Tianjin Key Laboratory of Bio-Electromagnetic and Neural Engineering, Hebei Key Laboratory of Bioelectromagnetics and Neuroengineering, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, 300132, China
| | - Yuna Lang
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Tianjin Key Laboratory of Bio-Electromagnetic and Neural Engineering, Hebei Key Laboratory of Bioelectromagnetics and Neuroengineering, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, 300132, China
| | - Ming-Wei Chang
- Nanotechnology and Integrated Bioengineering Centre, University of Ulster, Belfast, BT15 1AP, UK
| | - Mingkang Zhao
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Tianjin Key Laboratory of Bio-Electromagnetic and Neural Engineering, Hebei Key Laboratory of Bioelectromagnetics and Neuroengineering, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, 300132, China
| | - Chao Li
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Tianjin Key Laboratory of Bio-Electromagnetic and Neural Engineering, Hebei Key Laboratory of Bioelectromagnetics and Neuroengineering, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, 300132, China
| | - Shiheng Liu
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Tianjin Key Laboratory of Bio-Electromagnetic and Neural Engineering, Hebei Key Laboratory of Bioelectromagnetics and Neuroengineering, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, 300132, China
| | - Baolin Wang
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Tianjin Key Laboratory of Bio-Electromagnetic and Neural Engineering, Hebei Key Laboratory of Bioelectromagnetics and Neuroengineering, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, 300132, China
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Zhao R, Deng X, Dong J, Liang C, Yang X, Tang Y, Du J, Ge Z, Wang D, Shen Y, Jiang L, Lin W, Zhu T, Wang G. Highly Bioadaptable Hybrid Conduits with Spatially Bidirectional Structure for Precision Nerve Fiber Regeneration via Gene Therapy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309306. [PMID: 38483934 PMCID: PMC11109652 DOI: 10.1002/advs.202309306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/20/2024] [Indexed: 05/23/2024]
Abstract
Peripheral nerve deficits give rise to motor and sensory impairments within the limb. The clinical restoration of extensive segmental nerve defects through autologous nerve transplantation often encounters challenges such as axonal mismatch and suboptimal functional recovery. These issues may stem from the limited regenerative capacity of proximal axons and the subsequent Wallerian degeneration of distal axons. To achieve the integration of sensory and motor functions, a spatially differential plasmid DNA (pDNA) dual-delivery nanohydrogel conduit scaffold is devised. This innovative scaffold facilitates the localized administration of the transforming growth factor β (TGF-β) gene in the proximal region to accelerate nerve regeneration, while simultaneously delivering nicotinamide mononucleotide adenylyltransferase 2 (NMNAT2) to the distal region to mitigate Wallerian degeneration. By promoting autonomous and selective alignment of nerve fiber gap sutures via structure design, the approach aims to achieve a harmonious unification of nerve regeneration, neuromotor function, and sensory recovery. It is anticipated that this groundbreaking technology will establish a robust platform for gene delivery in tissue engineering.
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Affiliation(s)
- Renliang Zhao
- Orthopedics Research InstituteDepartment of OrthopedicsWest China HospitalSichuan UniversityChengdu610041P. R. China
- Trauma Medical CenterDepartment of Orthopedics SurgeryWest China HospitalSichuan UniversityChengdu610041China
| | - Xiangtian Deng
- Orthopedics Research InstituteDepartment of OrthopedicsWest China HospitalSichuan UniversityChengdu610041P. R. China
- Trauma Medical CenterDepartment of Orthopedics SurgeryWest China HospitalSichuan UniversityChengdu610041China
| | - Jizhao Dong
- Multidisciplinary Centre for Advanced MaterialsInstitute for Frontier Medical TechnologySchool of Chemistry and Chemical EngineeringShanghai University of Engineering Science333 Longteng Rd.Shanghai201620P. R. China
| | - Chen Liang
- Multidisciplinary Centre for Advanced MaterialsInstitute for Frontier Medical TechnologySchool of Chemistry and Chemical EngineeringShanghai University of Engineering Science333 Longteng Rd.Shanghai201620P. R. China
| | - Xiaozhong Yang
- Orthopedics Research InstituteDepartment of OrthopedicsWest China HospitalSichuan UniversityChengdu610041P. R. China
- Trauma Medical CenterDepartment of Orthopedics SurgeryWest China HospitalSichuan UniversityChengdu610041China
| | - Yunfeng Tang
- Head & Neck Oncology WardCancer CenterWest China HospitalCancer CenterSichuan UniversityChengdu610041P. R. China
| | - Juan Du
- Multidisciplinary Centre for Advanced MaterialsInstitute for Frontier Medical TechnologySchool of Chemistry and Chemical EngineeringShanghai University of Engineering Science333 Longteng Rd.Shanghai201620P. R. China
| | - Zilu Ge
- Orthopedics Research InstituteDepartment of OrthopedicsWest China HospitalSichuan UniversityChengdu610041P. R. China
- Trauma Medical CenterDepartment of Orthopedics SurgeryWest China HospitalSichuan UniversityChengdu610041China
| | - Dong Wang
- Orthopedics Research InstituteDepartment of OrthopedicsWest China HospitalSichuan UniversityChengdu610041P. R. China
- Trauma Medical CenterDepartment of Orthopedics SurgeryWest China HospitalSichuan UniversityChengdu610041China
| | - Yifan Shen
- Spine LabDepartment of Orthopedic SurgeryThe First Affiliated HospitalZhejiang University School of MedicineHangzhou310003China
| | - Lianghua Jiang
- Department of Orthopedic TraumaThe First People's Hospital of Kunshan affiliated with Jiangsu UniversitySuzhouJiangsu215300P. R. China
| | - Wei Lin
- Department of GynecologyWest China Second HospitalSichuan UniversityChengdu610041P. R. China
| | - Tonghe Zhu
- Multidisciplinary Centre for Advanced MaterialsInstitute for Frontier Medical TechnologySchool of Chemistry and Chemical EngineeringShanghai University of Engineering Science333 Longteng Rd.Shanghai201620P. R. China
| | - Guanglin Wang
- Orthopedics Research InstituteDepartment of OrthopedicsWest China HospitalSichuan UniversityChengdu610041P. R. China
- Trauma Medical CenterDepartment of Orthopedics SurgeryWest China HospitalSichuan UniversityChengdu610041China
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9
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Ramesh PA, Sethuraman S, Subramanian A. Multichannel Conduits with Fascicular Complementation: Significance in Long Segmental Peripheral Nerve Injury. ACS Biomater Sci Eng 2024; 10:2001-2021. [PMID: 38487853 DOI: 10.1021/acsbiomaterials.3c01868] [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: 04/09/2024]
Abstract
Despite the advances in tissue engineering approaches, reconstruction of long segmental peripheral nerve defects remains unsatisfactory. Although autologous grafts with proper fascicular complementation have shown meaningful functional recovery according to the Medical Research Council Classification (MRCC), the lack of donor nerve for such larger defect sizes (>30 mm) has been a serious clinical issue. Further clinical use of hollow nerve conduits is limited to bridging smaller segmental defects of denuded nerve ends (<30 mm). Recently, bioinspired multichannel nerve guidance conduits (NGCs) gained attention as autograft substitutes as they mimic the fascicular connective tissue microarchitecture in promoting aligned axonal outgrowth with desirable innervation for complete sensory and motor function restoration. This review outlines the hierarchical organization of nerve bundles and their significance in the sensory and motor functions of peripheral nerves. This review also emphasizes the major challenges in addressing the longer nerve defects with the role of fascicular arrangement in the multichannel nerve guidance conduits and the need for fascicular matching to accomplish complete functional restoration, especially in treating long segmental nerve defects. Further, currently available fabrication strategies in developing multichannel nerve conduits and their inconsistency in existing preclinical outcomes captured in this review would seed a new process in designing an ideal larger nerve conduit for peripheral nerve repair.
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Affiliation(s)
- Preethy Amruthavarshini Ramesh
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Centre for Nanotechnology & Advanced Biomaterials, ABCDE Innovation Centre, School of Chemical & Biotechnology SASTRA Deemed University Thanjavur 613 401, India
| | - Swaminathan Sethuraman
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Centre for Nanotechnology & Advanced Biomaterials, ABCDE Innovation Centre, School of Chemical & Biotechnology SASTRA Deemed University Thanjavur 613 401, India
| | - Anuradha Subramanian
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Centre for Nanotechnology & Advanced Biomaterials, ABCDE Innovation Centre, School of Chemical & Biotechnology SASTRA Deemed University Thanjavur 613 401, India
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10
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Das S, Thimukonda Jegadeesan J, Basu B. Advancing Peripheral Nerve Regeneration: 3D Bioprinting of GelMA-Based Cell-Laden Electroactive Bioinks for Nerve Conduits. ACS Biomater Sci Eng 2024; 10:1620-1645. [PMID: 38345020 DOI: 10.1021/acsbiomaterials.3c01226] [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: 03/12/2024]
Abstract
Peripheral nerve injuries often result in substantial impairment of the neurostimulatory organs. While the autograft is still largely used as the "gold standard" clinical treatment option, nerve guidance conduits (NGCs) are currently considered a promising approach for promoting peripheral nerve regeneration. While several attempts have been made to construct NGCs using various biomaterial combinations, a comprehensive exploration of the process science associated with three-dimensional (3D) extrusion printing of NGCs with clinically relevant sizes (length: 20 mm; diameter: 2-8 mm), while focusing on tunable buildability using electroactive biomaterial inks, remains unexplored. In addressing this gap, we present here the results of the viscoelastic properties of a range of a multifunctional gelatin methacrylate (GelMA)/poly(ethylene glycol) diacrylate (PEGDA)/carbon nanofiber (CNF)/gellan gum (GG) hydrogel bioink formulations and printability assessment using experiments and quantitative models. Our results clearly established the positive impact of the gellan gum on the enhancement of the rheological properties. Interestingly, the strategic incorporation of PEGDA as a secondary cross-linker led to a remarkable enhancement in the strength and modulus by 3 and 8-fold, respectively. Moreover, conductive CNF addition resulted in a 4-fold improvement in measured electrical conductivity. The use of four-component electroactive biomaterial ink allowed us to obtain high neural cell viability in 3D bioprinted constructs. While the conventionally cast scaffolds can support the differentiation of neuro-2a cells, the most important result has been the excellent cell viability of neural cells in 3D encapsulated structures. Taken together, our findings demonstrate the potential of 3D bioprinting and multimodal biophysical cues in developing functional yet critical-sized nerve conduits for peripheral nerve tissue regeneration.
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Affiliation(s)
- Soumitra Das
- Laboratory for Biomaterials, Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | | | - Bikramjit Basu
- Laboratory for Biomaterials, Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
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11
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Denton O, Wan Y, Beattie L, Jack T, McGoldrick P, McAllister H, Mullan C, Douglas CM, Shu W. Understanding the Role of Biofilms in Acute Recurrent Tonsillitis through 3D Bioprinting of a Novel Gelatin-PEGDA Hydrogel. Bioengineering (Basel) 2024; 11:202. [PMID: 38534476 DOI: 10.3390/bioengineering11030202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/15/2024] [Accepted: 02/18/2024] [Indexed: 03/28/2024] Open
Abstract
Acute recurrent tonsillitis is a chronic, biofilm-related infection that is a significant burden to patients and healthcare systems. It is often treated with repeated courses of antibiotics, which contributes to antimicrobial resistance. Studying biofilms is key to understanding this disease. In vitro modelling using 3D bioprinted hydrogels is a promising approach to achieve this. A novel gelatin-PEGDA pseudomonas fluorescens-laden bioink was developed and bioprinted in a 3D hydrogel construct fabricated using computer-aided design to mimic the tonsillar biofilm environment. The bioprinted constructs were cultured at 37 °C in lysogeny broth for 12 days. Bacterial growth was assessed by spectrophotometry. Cellular viability analysis was conducted using optical fluorescence microscopy (FDA/PI staining). A biocompatible 3D-printed bacteria-laden hydrogel construct was successfully fabricated. Bacterial growth was observed using optical fluorescence microscopy. A live/dead cellular-staining protocol demonstrated bacterial viability. Results obtained after the 12-day culture period showed higher bacterial growth in the 1% gelatin concentration construct compared to the 0% control. This study demonstrates the first use of a bacteria-laden gelatin-PEGDA hydrogel for biofabrication of a 3D-printed construct designed to model acute recurrent tonsillitis. Initiating a study with clinically relevant ex vivo tonsil bacteria will be an important next step in improving treatment of this impactful but understudied disease.
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Affiliation(s)
- Oliver Denton
- Department of Biomedical Engineering, University of Strathclyde, Glasgow G1 1XQ, UK
- Department of Otolaryngology/ENT Surgery, NHS Greater Glasgow and Clyde, Glasgow G51 4TF, UK
- Department of Medicine, University of Glasgow, Glasgow G12 8QQ, UK
| | - Yifei Wan
- Department of Biomedical Engineering, University of Strathclyde, Glasgow G1 1XQ, UK
| | - Laura Beattie
- Department of Biomedical Engineering, University of Strathclyde, Glasgow G1 1XQ, UK
| | - Téa Jack
- Department of Biomedical Engineering, University of Strathclyde, Glasgow G1 1XQ, UK
| | - Preston McGoldrick
- Department of Biomedical Engineering, University of Strathclyde, Glasgow G1 1XQ, UK
| | - Holly McAllister
- Department of Biomedical Engineering, University of Strathclyde, Glasgow G1 1XQ, UK
| | - Cara Mullan
- Department of Biomedical Engineering, University of Strathclyde, Glasgow G1 1XQ, UK
| | - Catriona M Douglas
- Department of Otolaryngology/ENT Surgery, NHS Greater Glasgow and Clyde, Glasgow G51 4TF, UK
- Department of Medicine, University of Glasgow, Glasgow G12 8QQ, UK
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK
| | - Wenmiao Shu
- Department of Biomedical Engineering, University of Strathclyde, Glasgow G1 1XQ, UK
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12
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Sun J, Cao W, Pan S, He L, Ji D, Zheng N, Sun X, Wang R, Niu Y. Porous Organic Materials in Tissue Engineering: Recent Advances and Applications for Severed Facial Nerve Injury Repair. Molecules 2024; 29:566. [PMID: 38338311 PMCID: PMC10856494 DOI: 10.3390/molecules29030566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 02/12/2024] Open
Abstract
The prevalence of facial nerve injury is substantial, and the restoration of its structure and function remains a significant challenge. Autologous nerve transplantation is a common treatment for severed facial nerve injury; however, it has great limitations. Therefore, there is an urgent need for clinical repair methods that can rival it. Tissue engineering nerve conduits are usually composed of scaffolds, cells and neurofactors. Tissue engineering is regarded as a promising method for facial nerve regeneration. Among different factors, the porous nerve conduit made of organic materials, which has high porosity and biocompatibility, plays an indispensable role. This review introduces facial nerve injury and the existing treatment methods and discusses the necessity of the application of porous nerve conduit. We focus on the application of porous organic polymer materials from production technology and material classification and summarize the necessity and research progress of these in repairing severed facial nerve injury, which is relatively rare in the existing articles. This review provides a theoretical basis for further research into and clinical interventions on facial nerve injury and has certain guiding significance for the development of new materials.
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Affiliation(s)
- Jingxuan Sun
- The First Affiliated Hospital of Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin 150001, China; (J.S.); (S.P.); (L.H.); (X.S.)
| | - Wenxin Cao
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150080, China; (W.C.); (D.J.)
- Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou 450000, China
| | - Shuang Pan
- The First Affiliated Hospital of Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin 150001, China; (J.S.); (S.P.); (L.H.); (X.S.)
| | - Lina He
- The First Affiliated Hospital of Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin 150001, China; (J.S.); (S.P.); (L.H.); (X.S.)
| | - Dongchao Ji
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150080, China; (W.C.); (D.J.)
| | - Nannan Zheng
- Key Laboratory of Micro-Systems and Micro-Structures Manufacturing (Ministry of Education), School of Medicine and Health, Harbin Institute of Technology, Harbin 150001, China;
| | - Xiangyu Sun
- The First Affiliated Hospital of Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin 150001, China; (J.S.); (S.P.); (L.H.); (X.S.)
| | - Ranxu Wang
- The First Affiliated Hospital of Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin 150001, China; (J.S.); (S.P.); (L.H.); (X.S.)
| | - Yumei Niu
- The First Affiliated Hospital of Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin 150001, China; (J.S.); (S.P.); (L.H.); (X.S.)
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Lim J, Bupphathong S, Huang W, Lin CH. Three-Dimensional Bioprinting of Biocompatible Photosensitive Polymers for Tissue Engineering Application. TISSUE ENGINEERING. PART B, REVIEWS 2023; 29:710-722. [PMID: 37335218 DOI: 10.1089/ten.teb.2023.0072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
Three-dimensional (3D) bioprinting, or additive manufacturing, is a rapid fabrication technique with the foremost objective of creating biomimetic tissue and organ replacements in hopes of restoring normal tissue function and structure. Generating the engineered organs with an infrastructure that is similar to that of the real organs can be beneficial to simulate the functional organs that work inside our bodies. Photopolymerization-based 3D bioprinting, or photocuring, has emerged as a promising method in engineering biomimetic tissues due to its simplicity, and noninvasive and spatially controllable approach. In this review, we investigated types of 3D printers, mainstream materials, photoinitiators, phototoxicity, and selected tissue engineering applications of 3D photopolymerization bioprinting.
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Affiliation(s)
- Joshua Lim
- Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan
| | - Sasinan Bupphathong
- Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan
| | - Wei Huang
- Department of Orthodontics, Rutgers School of Dental Medicine, Newark, New Jersey, USA
| | - Chih-Hsin Lin
- Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan
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Allgood JE, Bittner GD, Bushman JS. Repair and regeneration of peripheral nerve injuries that ablate branch points. Neural Regen Res 2023; 18:2564-2568. [PMID: 37449590 DOI: 10.4103/1673-5374.373679] [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: 07/18/2023] Open
Abstract
The peripheral nervous system has an extensive branching organization, and peripheral nerve injuries that ablate branch points present a complex challenge for clinical repair. Ablations of linear segments of the PNS have been extensively studied and routinely treated with autografts, acellular nerve allografts, conduits, wraps, and nerve transfers. In contrast, segmental-loss peripheral nerve injuries, in which one or more branch points are ablated so that there are three or more nerve endings, present additional complications that have not been rigorously studied or documented. This review discusses: (1) the branched anatomy of the peripheral nervous system, (2) case reports describing how peripheral nerve injuries with branched ablations have been surgically managed, (3) factors known to influence regeneration through branched nerve structures, (4) techniques and models of branched peripheral nerve injuries in animal models, and (5) conclusions regarding outcome measures and studies needed to improve understanding of regeneration through ablated branched structures of the peripheral nervous system.
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Affiliation(s)
- JuliAnne E Allgood
- Division of Pharmaceutical Sciences, University of Wyoming, Laramie, WY, USA
| | - George D Bittner
- Department of Neuroscience, The University of Texas at Austin, Austin, TX, USA
| | - Jared S Bushman
- Division of Pharmaceutical Sciences, University of Wyoming, Laramie, WY, USA
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15
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Nakhaei M, Jirofti N, Moradi A, Daliri M, Ebrahimzadeh MH. Fabrication of an Artificial Pulley Based on Electrospun Composite Polyurethane/Polycaprolactone Nanofibers for Hand Surgery: Structural, Mechanical, In Vitro, and In Vivo Examinations. ACS Biomater Sci Eng 2023; 9:5589-5598. [PMID: 37609710 DOI: 10.1021/acsbiomaterials.3c00431] [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: 08/24/2023]
Abstract
Injuries to the hand's flexor pulley system can be debilitating, causing pain and restricting movement of the affected finger(s). The creation of a biocompatible artificial pulley could potentially alleviate some of the complications associated with current surgical treatments. In this study, a biocompatible artificial pulley was fabricated by using polycaprolactone (PCL) and polyurethane (PU) in the form of an electrospun nanofiber structure. All scaffolds were structurally analyzed using FESEM imaging, porosity, FTIR, and DSC examinations. Mechanical properties were evaluated, and in vitro studies were conducted on the degradation rate, swelling ratio, and toxicity. Immune response to fabricated scaffolds was evaluated by implanting them under the skin of rats for further pathological examination. All scaffolds exhibited a nanoscale structure and high porosity without any undesirable functional groups. The 25% PCL scaffold showed 17%, 20%, 80%, 17%, and 70% significant increases in Fmax, final stress, final strain, Young's modulus, and elongation percentage, respectively. In fact, the PCL25% scaffold demonstrated more than 100% improvement in mechanical properties compared to those of A2 and A4 natural pulleys. Additionally, all scaffold structures showed cell viability similar to that of the control sample. The study suggests that scaffolds made of 25% PCL hold promise as effective artificial pulleys for reconstructing the flexor tendon pulley system in cases of injury.
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Affiliation(s)
- Mehrnoush Nakhaei
- Orthopedic Research Center, Department of Orthopedic Surgery, Mashhad University of Medical Science, Mashhad 91388-13944, Iran
- Bone and Joint Research laboratory, Ghaem Hospital, Mashhad University of Medical Science, Mashhad 91388-13944, Iran
| | - Nafiseh Jirofti
- Orthopedic Research Center, Department of Orthopedic Surgery, Mashhad University of Medical Science, Mashhad 91388-13944, Iran
- Bone and Joint Research laboratory, Ghaem Hospital, Mashhad University of Medical Science, Mashhad 91388-13944, Iran
| | - Ali Moradi
- Orthopedic Research Center, Department of Orthopedic Surgery, Mashhad University of Medical Science, Mashhad 91388-13944, Iran
- Bone and Joint Research laboratory, Ghaem Hospital, Mashhad University of Medical Science, Mashhad 91388-13944, Iran
| | - Mahla Daliri
- Orthopedic Research Center, Department of Orthopedic Surgery, Mashhad University of Medical Science, Mashhad 91388-13944, Iran
| | - Mohammad Hossein Ebrahimzadeh
- Orthopedic Research Center, Department of Orthopedic Surgery, Mashhad University of Medical Science, Mashhad 91388-13944, Iran
- Bone and Joint Research laboratory, Ghaem Hospital, Mashhad University of Medical Science, Mashhad 91388-13944, Iran
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16
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Wu S, Shen W, Ge X, Ao F, Zheng Y, Wang Y, Jia X, Mao Y, Luo Y. Advances in Large Gap Peripheral Nerve Injury Repair and Regeneration with Bridging Nerve Guidance Conduits. Macromol Biosci 2023; 23:e2300078. [PMID: 37235853 DOI: 10.1002/mabi.202300078] [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: 02/27/2023] [Revised: 05/10/2023] [Indexed: 05/28/2023]
Abstract
Peripheral nerve injury is a common complication of accidents and diseases. The traditional autologous nerve graft approach remains the gold standard for the treatment of nerve injuries. While sources of autologous nerve grafts are very limited and difficult to obtain. Nerve guidance conduits are widely used in the treatment of peripheral nerve injuries as an alternative to nerve autografts and allografts. However, the development of nerve conduits does not meet the needs of large gap peripheral nerve injury. Functional nerve conduits can provide a good microenvironment for axon elongation and myelin regeneration. Herein, the manufacturing methods and different design types of functional bridging nerve conduits for nerve conduits combined with electrical or magnetic stimulation and loaded with Schwann cells, etc., are summarized. It summarizes the literature and finds that the technical solutions of functional nerve conduits with electrical stimulation, magnetic stimulation and nerve conduits combined with Schwann cells can be used as effective strategies for bridging large gap nerve injury and provide an effective way for the study of large gap nerve injury repair. In addition, functional nerve conduits provide a new way to construct delivery systems for drugs and growth factors in vivo.
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Affiliation(s)
- Shang Wu
- School of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Wen Shen
- School of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Xuemei Ge
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
| | - Fen Ao
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Yan Zheng
- School of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Yigang Wang
- Department of Pharmacy, No. 215 Hospital of Shaanxi Nuclear Industry, Xianyang, Shaanxi, 712000, P. R. China
| | - Xiaoni Jia
- Central Laboratory, Xi'an Mental Health Center, Xi'an, 710061, P. R. China
| | - Yueyang Mao
- School of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Yali Luo
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
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17
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Zhang L, Zhang H, Wang H, Guo K, Zhu H, Li S, Gao F, Li S, Yang Z, Liu X, Zheng X. Fabrication of Multi-Channel Nerve Guidance Conduits Containing Schwann Cells Based on Multi-Material 3D Bioprinting. 3D PRINTING AND ADDITIVE MANUFACTURING 2023; 10:1046-1054. [PMID: 37886409 PMCID: PMC10599437 DOI: 10.1089/3dp.2021.0203] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
Nerve guidance conduits (NGCs) are an essential solution for peripheral nerve repair and regeneration in tissue engineering and medicine. However, the ability of current NGCs is limited to repairing longer nerve gap (i.e., >20 mm) because it cannot meet the following two conditions simultaneously: (1) directional guidance of the axial high-density channels and (2) regenerative stimulation of the extracellular matrix secreted by Schwann cells (SCs). Therefore, we propose a multi-material 3D bioprinting process to fabricate multi-channel nerve guide conduits (MNGCs) containing SCs. In the article, cell-laden methacrylate gelatin (GelMA) was used as the bulk material of MNGCs. To improve the printing accuracy of the axial channels and the survival rate of SCs, we systematically optimized the printing temperature parameter based on hydrogel printability analysis. The multi-material bioprinting technology was used to realize the alternate printing of supporting gelatin and cell-laden GelMA. Then, the high-accuracy channels were fabricated through the UV cross-linking of GelMA and the dissolving technique of gelatin. The SCs distributed around the channels with a high survival rate, and the cell survival rate maintained above 90%. In general, the study on multi-material 3D printing was carried out from the fabricating technology and material analysis, which will provide a potential solution for the fabrication of MNGCs containing SCs.
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Affiliation(s)
- Liming Zhang
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
| | - Hui Zhang
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Heran Wang
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Kai Guo
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
| | - Huixuan Zhu
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Song Li
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
| | - Feiyang Gao
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
| | - Shijie Li
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
| | - Zhenda Yang
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
| | - Xin Liu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Xiongfei Zheng
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
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18
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Su H, Lu B, Li M, Yang X, Qin M, Wu Y. Development of digital light processing-based multi-material bioprinting for fabrication of heterogeneous tissue constructs. Biomater Sci 2023; 11:6663-6673. [PMID: 37614165 DOI: 10.1039/d3bm01054f] [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: 08/25/2023]
Abstract
Human tissues and organs have heterogeneous structures with multiple property gradients, which are difficult to restore by single-material bioprinting technology. The advances in multi-material bioprinting technologies have shown great promise in replicating tissue-engineered constructs with one or more functional gradients. In this study, a multi-material 3D printing system based on digital light processing (DLP) was developed, which could efficiently complete multi-material bioprinting tasks. An appropriate concentration of an ultraviolet absorber was selected to improve the printability of channels, and meanwhile, curing parameters were optimized to improve the printing accuracy. The regulation of the mechanical properties of 3D printed constructs was also explored, which offered guidance on the printing of constructs with mechanical anisotropy. In addition, a cell-laden tracheal construct was bioprinted with a biomimetic heterogeneous structure and mechanical gradient, which could support superior cell viability during a 7-day culture. This study showed that the DLP-based process has the capability of building constructs with complex structures and multiple materials, exhibiting the potential to be used in the biofabrication of heterogeneous and functionally-graded tissues and organs for regenerative medicine.
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Affiliation(s)
- Hao Su
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China.
| | - Bingxian Lu
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China.
| | - Ming Li
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China.
| | - Xue Yang
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China.
| | - Minghao Qin
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China.
| | - Yang Wu
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China.
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Mankavi F, Ibrahim R, Wang H. Advances in Biomimetic Nerve Guidance Conduits for Peripheral Nerve Regeneration. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2528. [PMID: 37764557 PMCID: PMC10536071 DOI: 10.3390/nano13182528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/04/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023]
Abstract
Injuries to the peripheral nervous system are a common clinical issue, causing dysfunctions of the motor and sensory systems. Surgical interventions such as nerve autografting are necessary to repair damaged nerves. Even with autografting, i.e., the gold standard, malfunctioning and mismatches between the injured and donor nerves often lead to unwanted failure. Thus, there is an urgent need for a new intervention in clinical practice to achieve full functional recovery. Nerve guidance conduits (NGCs), providing physicochemical cues to guide neural regeneration, have great potential for the clinical regeneration of peripheral nerves. Typically, NGCs are tubular structures with various configurations to create a microenvironment that induces the oriented and accelerated growth of axons and promotes neuron cell migration and tissue maturation within the injured tissue. Once the native neural environment is better understood, ideal NGCs should maximally recapitulate those key physiological attributes for better neural regeneration. Indeed, NGC design has evolved from solely physical guidance to biochemical stimulation. NGC fabrication requires fundamental considerations of distinct nerve structures, the associated extracellular compositions (extracellular matrices, growth factors, and cytokines), cellular components, and advanced fabrication technologies that can mimic the structure and morphology of native extracellular matrices. Thus, this review mainly summarizes the recent advances in the state-of-the-art NGCs in terms of biomaterial innovations, structural design, and advanced fabrication technologies and provides an in-depth discussion of cellular responses (adhesion, spreading, and alignment) to such biomimetic cues for neural regeneration and repair.
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Affiliation(s)
| | | | - Hongjun Wang
- Department of Biomedical Engineering, Semcer Center for Healthcare Innovation, Stevens Institute of Technology, Hoboken, NJ 07030, USA; (F.M.); (R.I.)
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20
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Kim SD, Kim K, Shin M. Recent advances in 3D printable conductive hydrogel inks for neural engineering. NANO CONVERGENCE 2023; 10:41. [PMID: 37679589 PMCID: PMC10484881 DOI: 10.1186/s40580-023-00389-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 08/23/2023] [Indexed: 09/09/2023]
Abstract
Recently, the 3D printing of conductive hydrogels has undergone remarkable advances in the fabrication of complex and functional structures. In the field of neural engineering, an increasing number of reports have been published on tissue engineering and bioelectronic approaches over the last few years. The convergence of 3D printing methods and electrically conducting hydrogels may create new clinical and therapeutic possibilities for precision regenerative medicine and implants. In this review, we summarize (i) advancements in preparation strategies for conductive materials, (ii) various printing techniques enabling the fabrication of electroconductive hydrogels, (iii) the required physicochemical properties of the printed constructs, (iv) their applications in bioelectronics and tissue regeneration for neural engineering, and (v) unconventional approaches and outlooks for the 3D printing of conductive hydrogels. This review provides technical insights into 3D printable conductive hydrogels and encompasses recent developments, specifically over the last few years of research in the neural engineering field.
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Affiliation(s)
- Sung Dong Kim
- Department of Biomedical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
- Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon, 16419, Republic of Korea
| | - Kyoungryong Kim
- Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon, 16419, Republic of Korea
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Mikyung Shin
- Department of Biomedical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
- Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon, 16419, Republic of Korea.
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
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21
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Joshi A, Choudhury S, Baghel VS, Ghosh S, Gupta S, Lahiri D, Ananthasuresh GK, Chatterjee K. 4D Printed Programmable Shape-Morphing Hydrogels as Intraoperative Self-Folding Nerve Conduits for Sutureless Neurorrhaphy. Adv Healthc Mater 2023; 12:e2300701. [PMID: 37017130 DOI: 10.1002/adhm.202300701] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 03/24/2023] [Indexed: 04/06/2023]
Abstract
There are only a few reports of implantable 4D printed biomaterials, most of which exhibit slow deformations rendering them unsuitable for in situ surgical deployment. In this study, a hydrogel system is engineered with defined swelling behaviors, which demonstrated excellent printability in extrusion-based 3D printing and programmed shape deformations post-printing. Shape deformations of the spatially patterned hydrogels with defined infill angles are computationally predicted for a variety of 3D printed structures, which are subsequently validated experimentally. The gels are coated with gelatin-rich nanofibers to augment cell growth. 3D-printed hydrogel sheets with pre-programmed infill patterns rapidly self-rolled into tubes in vivo to serve as nerve-guiding conduits for repairing sciatic nerve defects in a rat model. These 4D-printed hydrogels minimized the complexity of surgeries by tightly clamping the resected ends of the nerves to assist in the healing of peripheral nerve damage, as revealed by histological evaluation and functional assessments for up to 45 days. This work demonstrates that 3D-printed hydrogels can be designed for programmed shape changes by swelling in vivo to yield 4D-printed tissue constructs for the repair of peripheral nerve damage with the potential to be extended in other areas of regenerative medicine.
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Affiliation(s)
- Akshat Joshi
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Saswat Choudhury
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Vageesh Singh Baghel
- Department of Mechanical Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Souvik Ghosh
- Biomaterials and Multiscale Mechanics Lab, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
- Molecular Endocrinology Lab, Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, India
| | - Sumeet Gupta
- Department of Pharmacy, Maharshi Markandeshwar University, Mullana, 133207, India
| | - Debrupa Lahiri
- Biomaterials and Multiscale Mechanics Lab, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
| | - G K Ananthasuresh
- Department of Mechanical Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Kaushik Chatterjee
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, 560012, India
- Department of Materials Engineering, Indian Institute of Science, Bangalore, 560012, India
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22
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Urciuolo F, Imparato G, Netti PA. In vitro strategies for mimicking dynamic cell-ECM reciprocity in 3D culture models. Front Bioeng Biotechnol 2023; 11:1197075. [PMID: 37434756 PMCID: PMC10330728 DOI: 10.3389/fbioe.2023.1197075] [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: 03/30/2023] [Accepted: 06/01/2023] [Indexed: 07/13/2023] Open
Abstract
The extracellular microenvironment regulates cell decisions through the accurate presentation at the cell surface of a complex array of biochemical and biophysical signals that are mediated by the structure and composition of the extracellular matrix (ECM). On the one hand, the cells actively remodel the ECM, which on the other hand affects cell functions. This cell-ECM dynamic reciprocity is central in regulating and controlling morphogenetic and histogenetic processes. Misregulation within the extracellular space can cause aberrant bidirectional interactions between cells and ECM, resulting in dysfunctional tissues and pathological states. Therefore, tissue engineering approaches, aiming at reproducing organs and tissues in vitro, should realistically recapitulate the native cell-microenvironment crosstalk that is central for the correct functionality of tissue-engineered constructs. In this review, we will describe the most updated bioengineering approaches to recapitulate the native cell microenvironment and reproduce functional tissues and organs in vitro. We have highlighted the limitations of the use of exogenous scaffolds in recapitulating the regulatory/instructive and signal repository role of the native cell microenvironment. By contrast, strategies to reproduce human tissues and organs by inducing cells to synthetize their own ECM acting as a provisional scaffold to control and guide further tissue development and maturation hold the potential to allow the engineering of fully functional histologically competent three-dimensional (3D) tissues.
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Affiliation(s)
- F. Urciuolo
- Interdisciplinary Research Centre on Biomaterials (CRIB), University of Naples Federico II, Naples, Italy
- Department of Chemical Materials and Industrial Production (DICMAPI), University of Naples Federico II, Naples, Italy
- Center for Advanced Biomaterials for HealthCare@CRIB, Istituto Italiano di Tecnologia, Naples, Italy
| | - G. Imparato
- Center for Advanced Biomaterials for HealthCare@CRIB, Istituto Italiano di Tecnologia, Naples, Italy
| | - P. A. Netti
- Interdisciplinary Research Centre on Biomaterials (CRIB), University of Naples Federico II, Naples, Italy
- Department of Chemical Materials and Industrial Production (DICMAPI), University of Naples Federico II, Naples, Italy
- Center for Advanced Biomaterials for HealthCare@CRIB, Istituto Italiano di Tecnologia, Naples, Italy
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23
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Zennifer A, Thangadurai M, Sundaramurthi D, Sethuraman S. Additive manufacturing of peripheral nerve conduits - Fabrication methods, design considerations and clinical challenges. SLAS Technol 2023; 28:102-126. [PMID: 37028493 DOI: 10.1016/j.slast.2023.03.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/20/2023] [Accepted: 03/28/2023] [Indexed: 04/08/2023]
Abstract
Tissue-engineered nerve guidance conduits (NGCs) are a viable clinical alternative to autografts and allografts and have been widely used to treat peripheral nerve injuries (PNIs). Although these NGCs are successful to some extent, they cannot aid in native regeneration by improving native-equivalent neural innervation or regrowth. Further, NGCs exhibit longer recovery period and high cost limiting their clinical applications. Additive manufacturing (AM) could be an alternative to the existing drawbacks of the conventional NGCs fabrication methods. The emergence of the AM technique has offered ease for developing personalized three-dimensional (3D) neural constructs with intricate features and higher accuracy on a larger scale, replicating the native feature of nerve tissue. This review introduces the structural organization of peripheral nerves, the classification of PNI, and limitations in clinical and conventional nerve scaffold fabrication strategies. The principles and advantages of AM-based techniques, including the combinatorial approaches utilized for manufacturing 3D nerve conduits, are briefly summarized. This review also outlines the crucial parameters, such as the choice of printable biomaterials, 3D microstructural design/model, conductivity, permeability, degradation, mechanical property, and sterilization required to fabricate large-scale additive-manufactured NGCs successfully. Finally, the challenges and future directions toward fabricating the 3D-printed/bioprinted NGCs for clinical translation are also discussed.
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Affiliation(s)
- Allen Zennifer
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Centre for Nanotechnology & Advanced Biomaterials, ABCDE Innovation Centre, School of Chemical & Biotechnology, SASTRA Deemed University, India
| | - Madhumithra Thangadurai
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Centre for Nanotechnology & Advanced Biomaterials, ABCDE Innovation Centre, School of Chemical & Biotechnology, SASTRA Deemed University, India
| | - Dhakshinamoorthy Sundaramurthi
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Centre for Nanotechnology & Advanced Biomaterials, ABCDE Innovation Centre, School of Chemical & Biotechnology, SASTRA Deemed University, India
| | - Swaminathan Sethuraman
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Centre for Nanotechnology & Advanced Biomaterials, ABCDE Innovation Centre, School of Chemical & Biotechnology, SASTRA Deemed University, India.
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24
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Wu W, Dong Y, Liu H, Jiang X, Yang L, Luo J, Hu Y, Gou M. 3D printed elastic hydrogel conduits with 7,8-dihydroxyflavone release for peripheral nerve repair. Mater Today Bio 2023; 20:100652. [PMID: 37214548 PMCID: PMC10199216 DOI: 10.1016/j.mtbio.2023.100652] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/17/2023] [Accepted: 04/29/2023] [Indexed: 05/24/2023] Open
Abstract
Nerve guide conduit is a promising treatment for long gap peripheral nerve injuries, yet its efficacy is limited. Drug-releasable scaffolds may provide reliable platforms to build a regenerative microenvironment for nerve recovery. In this study, an elastic hydrogel conduit encapsulating with prodrug nanoassemblies is fabricated by a continuous 3D printing technique for promoting nerve regeneration. The bioactive hydrogel is comprised of gelatin methacryloyl (GelMA) and silk fibroin glycidyl methacrylate (SF-MA), exhibiting positive effects on adhesion, proliferation, and migration of Schwann cells. Meanwhile, 7,8-dihydroxyflavone (7,8-DHF) prodrug nanoassemblies with high drug-loading capacities are developed through self-assembly of the lipophilic prodrug and loaded into the GelMA/SF-MA hydrogel. The drug loading conduit could sustainedly release 7,8-DHF to facilitate neurite elongation. A 12 mm nerve defect model is established for therapeutic efficiency evaluation by implanting the conduit through surgical suturing with rat sciatic nerve. The electrophysiological, morphological, and histological assessments indicate that this conduit can promote axon regeneration, remyelination, and function recovery by providing a favorable microenvironment. These findings implicate that the GelMA/SF-MA conduit with 7,8-DHF release has potentials in the treatment of long-gap peripheral nerve injury.
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Affiliation(s)
- Wenbi Wu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yinchu Dong
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Haofan Liu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xuebing Jiang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Ling Yang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Jing Luo
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yu Hu
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan province, China
| | - Maling Gou
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
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25
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He N, Wang X, Shi L, Li J, Mo L, Chen F, Huang Y, Liu H, Zhu X, Zhu W, Mao Y, Han X. Photoinhibiting via simultaneous photoabsorption and free-radical reaction for high-fidelity light-based bioprinting. Nat Commun 2023; 14:3063. [PMID: 37244910 DOI: 10.1038/s41467-023-38838-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 05/17/2023] [Indexed: 05/29/2023] Open
Abstract
Light-based 3D bioprinting is now employed widely to fabricate geometrically complex constructs for various biomedical applications. However, the inherent light scattering defect creates significant challenges in patterning dilute hydrogels to form high-fidelity structures with fine-scale features. Herein, we introduce a photoinhibiting approach that can effectively suppress the light scattering effect via a mechanism of simultaneous photoabsorption and free-radical reaction. This biocompatible approach significantly improves the printing resolution (~1.2 - ~2.1 pixels depending on swelling) and shape fidelity (geometric error less than 5%), while minimising the costly trial-and-error procedures. The capability in patterning 3D complex constructs using different hydrogels is demonstrated by manufacturing various scaffolds featuring intricate multi-sized channels and thin-walled networks. Importantly, cellularised gyroid scaffolds (HepG2) are fabricated successfully, exhibiting high cell proliferation and functionality. The strategy established in this study promotes the printability and operability of light-based 3D bioprinting systems, allowing numerous new applications for tissue engineering.
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Affiliation(s)
- Ning He
- National Engineering Research Centre for High Efficiency Grinding, Hunan University, 410082, Changsha, China
- State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, 410082, Changsha, China
| | - Xiaonan Wang
- College of Biology, Hunan University, 410082, Changsha, China
| | - Liyang Shi
- College of Biology, Hunan University, 410082, Changsha, China
| | - Jing Li
- National Engineering Research Centre for High Efficiency Grinding, Hunan University, 410082, Changsha, China
| | - Lan Mo
- College of Food Science and Technology, Hunan Agricultural University, 410128, Changsha, China
| | - Feng Chen
- National Engineering Research Centre for High Efficiency Grinding, Hunan University, 410082, Changsha, China.
| | - Yuting Huang
- College of Material Science and Engineering, Hunan University, 410082, Changsha, China
| | - Hairong Liu
- College of Material Science and Engineering, Hunan University, 410082, Changsha, China
| | - Xiaolong Zhu
- National Engineering Research Centre for High Efficiency Grinding, Hunan University, 410082, Changsha, China
| | - Wei Zhu
- National Engineering Research Centre for High Efficiency Grinding, Hunan University, 410082, Changsha, China
| | - Yiqi Mao
- National Engineering Research Centre for High Efficiency Grinding, Hunan University, 410082, Changsha, China
| | - Xiaoxiao Han
- National Engineering Research Centre for High Efficiency Grinding, Hunan University, 410082, Changsha, China.
- State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, 410082, Changsha, China.
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26
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Wu Y, Su H, Li M, Xing H. Digital light processing-based multi-material bioprinting: Processes, applications, and perspectives. J Biomed Mater Res A 2023; 111:527-542. [PMID: 36436142 DOI: 10.1002/jbm.a.37473] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/08/2022] [Accepted: 11/15/2022] [Indexed: 11/29/2022]
Abstract
In the past decade, three-dimensional (3D) printing technology based on digital light processing (DLP) has developed rapidly and shown application prospects in several fields such as pneumatic robotics, flexible electronics, and tissue engineering. In particular, DLP-based multi-material printing has been capable of constructing heterogeneous 3D structures with characteristic gradients. DLP 3D printing technology has a wide range of applications in the field of bioprinting due to its high precision and mild printing conditions, including functionalized artificial tissues, medical models, and bioreactors. This paper focuses on the development of DLP-based multi-material 3D printing technology and its applications in the field of bioprinting, followed by giving an outlook on future efforts on overcoming the challenges and obstacles of this promising technique.
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Affiliation(s)
- Yang Wu
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, China.,State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, China
| | - Hao Su
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, China
| | - Ming Li
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, China
| | - Huayang Xing
- Hangzhou AimingMed Technologies, Hangzhou, China
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27
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Yao Z, Lundqvist E, Kuang Y, Ardoña HAM. Engineering Multi-Scale Organization for Biotic and Organic Abiotic Electroactive Systems. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205381. [PMID: 36670065 PMCID: PMC10074131 DOI: 10.1002/advs.202205381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Multi-scale organization of molecular and living components is one of the most critical parameters that regulate charge transport in electroactive systems-whether abiotic, biotic, or hybrid interfaces. In this article, an overview of the current state-of-the-art for controlling molecular order, nanoscale assembly, microstructure domains, and macroscale architectures of electroactive organic interfaces used for biomedical applications is provided. Discussed herein are the leading strategies and challenges to date for engineering the multi-scale organization of electroactive organic materials, including biomolecule-based materials, synthetic conjugated molecules, polymers, and their biohybrid analogs. Importantly, this review provides a unique discussion on how the dependence of conduction phenomena on structural organization is observed for electroactive organic materials, as well as for their living counterparts in electrogenic tissues and biotic-abiotic interfaces. Expansion of fabrication capabilities that enable higher resolution and throughput for the engineering of ordered, patterned, and architecture electroactive systems will significantly impact the future of bioelectronic technologies for medical devices, bioinspired harvesting platforms, and in vitro models of electroactive tissues. In summary, this article presents how ordering at multiple scales is important for modulating transport in both the electroactive organic, abiotic, and living components of bioelectronic systems.
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Affiliation(s)
- Ze‐Fan Yao
- Department of Chemical and Biomolecular EngineeringSamueli School of EngineeringUniversity of CaliforniaIrvineCA92697USA
- Department of ChemistrySchool of Physical SciencesUniversity of CaliforniaIrvineCA92697USA
| | - Emil Lundqvist
- Department of Biomedical EngineeringSamueli School of EngineeringUniversity of CaliforniaIrvineCA92697USA
| | - Yuyao Kuang
- Department of Chemical and Biomolecular EngineeringSamueli School of EngineeringUniversity of CaliforniaIrvineCA92697USA
| | - Herdeline Ann M. Ardoña
- Department of Chemical and Biomolecular EngineeringSamueli School of EngineeringUniversity of CaliforniaIrvineCA92697USA
- Department of ChemistrySchool of Physical SciencesUniversity of CaliforniaIrvineCA92697USA
- Department of Biomedical EngineeringSamueli School of EngineeringUniversity of CaliforniaIrvineCA92697USA
- Sue & Bill Gross Stem Cell Research CenterUniversity of CaliforniaIrvineCA92697USA
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28
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Kaliaraj GS, Shanmugam DK, Dasan A, Mosas KKA. Hydrogels-A Promising Materials for 3D Printing Technology. Gels 2023; 9:gels9030260. [PMID: 36975708 PMCID: PMC10048566 DOI: 10.3390/gels9030260] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/15/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023] Open
Abstract
Hydrogels are a promising material for a variety of applications after appropriate functional and structural design, which alters the physicochemical properties and cell signaling pathways of the hydrogels. Over the past few decades, considerable scientific research has made breakthroughs in a variety of applications such as pharmaceuticals, biotechnology, agriculture, biosensors, bioseparation, defense, and cosmetics. In the present review, different classifications of hydrogels and their limitations have been discussed. In addition, techniques involved in improving the physical, mechanical, and biological properties of hydrogels by admixing various organic and inorganic materials are explored. Future 3D printing technology will substantially advance the ability to pattern molecules, cells, and organs. With significant potential for producing living tissue structures or organs, hydrogels can successfully print mammalian cells and retain their functionalities. Furthermore, recent advances in functional hydrogels such as photo- and pH-responsive hydrogels and drug-delivery hydrogels are discussed in detail for biomedical applications.
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Affiliation(s)
- Gobi Saravanan Kaliaraj
- Centre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology, Chennai 600 119, India
| | - Dilip Kumar Shanmugam
- Centre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology, Chennai 600 119, India
| | - Arish Dasan
- FunGlass-Centre for Functional and Surface Functionalised Glass, Alexander Dubcek University of Trencin, 91150 Trencin, Slovakia
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29
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Shi W, Wu Y, Wu J, Gao Y, Zhao P, Lu X. NPS-Crosslinked Fibrin Gels Load with EMSCs to Repair Peripheral Nerve Injury in Rats. Macromol Biosci 2023; 23:e2200381. [PMID: 36583716 DOI: 10.1002/mabi.202200381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/18/2022] [Indexed: 12/31/2022]
Abstract
Neural tissue engineering has been introduced as a novel therapeutic strategy for trauma-induced sciatic nerve defects. Here, a neuropeptide S (NPS)-crosslinked fibrin scaffolds (NPS@Fg) loaded with an ectomesenchymal stem cell (EMSC) system to bridge an 8-mm sciatic nerve defect in rats are reported. The Schwann cell-like and neural differentiation of the EMSCs on the engineered fibrin scaffolds are also assessed in vitro. These results show that the NPS@Fg promotes the differentiation of EMSCs into neuronal lineage cells, which may also contribute to the therapeutic outcome of the NPS@Fg+EMSCs strategy. After transplantation NPS@Fg+EMSCs into sciatic nerve defects in rats, nerve recovery is assessed up to 12 weeks postinjury. In vivo experiments show that the combination of NPS crosslinked fibrin scaffolds with EMSCs can significantly accelerate nerve healing and improve morphological repair. In the study, NPS@Fg+EMSCs may represent a new potential strategy for peripheral nerve reconstruction.
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Affiliation(s)
- Wentao Shi
- Brain Institute, School of Medicine, Jiangnan University, Wuxi, Jiangsu Province, 214122, P. R. China.,Nanjing Gaochun People's Hospital, Nanjing, Jiangsu Province, 210000, P. R. China
| | - Yiqing Wu
- Brain Institute, School of Medicine, Jiangnan University, Wuxi, Jiangsu Province, 214122, P. R. China
| | - Jiawei Wu
- Brain Institute, School of Medicine, Jiangnan University, Wuxi, Jiangsu Province, 214122, P. R. China
| | - Yan Gao
- Brain Institute, School of Medicine, Jiangnan University, Wuxi, Jiangsu Province, 214122, P. R. China
| | - Peng Zhao
- Brain Institute, School of Medicine, Jiangnan University, Wuxi, Jiangsu Province, 214122, P. R. China
| | - Xiaojie Lu
- Brain Institute, School of Medicine, Jiangnan University, Wuxi, Jiangsu Province, 214122, P. R. China.,Wuxi Second People's Hospital, Wuxi, Jiangsu Province, 214122, P. R. China
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30
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Huang WJ, Wang J. Development of 3D-Printed, Biodegradable, Conductive PGSA Composites for Nerve Tissue Regeneration. Macromol Biosci 2023; 23:e2200470. [PMID: 36525352 DOI: 10.1002/mabi.202200470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/07/2022] [Indexed: 12/23/2022]
Abstract
Nerve conduits are used to reconnect broken nerve bundles and provide protection to facilitate nerve regeneration. However, the low degradation rate and regeneration rate, as well as the requirement for secondary surgery are some of the most criticized drawbacks of existing nerve conduits. With high processing flexibility from the photo-curability, poly (glycerol sebacate) acrylate (PGSA) is a promising material with tunable mechanical properties and biocompatibility for the development of medical devices. Here, polyvinylpyrrolidone (PVP), silver nanoparticles (AgNPs), and graphene are embedded in biodegradable PGSA matrix. The polymer composites are then assessed for their electrical conductivity, biodegradability, three-dimensional-printability (3D-printability), and promotion of cell proliferation. Through the four-probe technique, it is shown that the PGSA composites are identified as highly conductive in swollen state. Furthermore, biodegradability is evaluated through enzymatic degradation and facilitated hydrolysis. Cell proliferation and guidance are significantly promoted by three-dimensional-printed microstructures and electrical stimulation on PGSA composites, especially on PGSA-PVP. Hence, microstructured nerve conduits are 3D-printed with PGSA-PVP. Guided cell growth and promoted proliferation are subsequently demonstrated by Schwann cell culture combined with electrical stimulation. Consequently, 3D-printed nerve conduits fabricated with PGSA composites hold great potential in nerve tissue regeneration through electrical stimulation.
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Affiliation(s)
- Wei-Jia Huang
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, ROC 30013, Taiwan
| | - Jane Wang
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, ROC 30013, Taiwan
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31
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You S, Xiang Y, Hwang HH, Berry DB, Kiratitanaporn W, Guan J, Yao E, Tang M, Zhong Z, Ma X, Wangpraseurt D, Sun Y, Lu TY, Chen S. High cell density and high-resolution 3D bioprinting for fabricating vascularized tissues. SCIENCE ADVANCES 2023; 9:eade7923. [PMID: 36812321 PMCID: PMC9946358 DOI: 10.1126/sciadv.ade7923] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
Three-dimensional (3D) bioprinting techniques have emerged as the most popular methods to fabricate 3D-engineered tissues; however, there are challenges in simultaneously satisfying the requirements of high cell density (HCD), high cell viability, and fine fabrication resolution. In particular, bioprinting resolution of digital light processing-based 3D bioprinting suffers with increasing bioink cell density due to light scattering. We developed a novel approach to mitigate this scattering-induced deterioration of bioprinting resolution. The inclusion of iodixanol in the bioink enables a 10-fold reduction in light scattering and a substantial improvement in fabrication resolution for bioinks with an HCD. Fifty-micrometer fabrication resolution was achieved for a bioink with 0.1 billion per milliliter cell density. To showcase the potential application in tissue/organ 3D bioprinting, HCD thick tissues with fine vascular networks were fabricated. The tissues were viable in a perfusion culture system, with endothelialization and angiogenesis observed after 14 days of culture.
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Affiliation(s)
- Shangting You
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Yi Xiang
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Henry H. Hwang
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - David B. Berry
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
- Department of Orthopedic Surgery, University of California, San Diego, La Jolla, CA 92093, USA
| | - Wisarut Kiratitanaporn
- Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Jiaao Guan
- Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Emmie Yao
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Min Tang
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Zheng Zhong
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Xinyue Ma
- School of Biological Sciences, University of California, San Diego, La Jolla, CA 92093, USA
| | - Daniel Wangpraseurt
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA
| | - Yazhi Sun
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Ting-yu Lu
- Materials Science and Engineering Program, University of California, San Diego, La Jolla, CA 92093, USA
| | - Shaochen Chen
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
- Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093, USA
- Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093, USA
- Materials Science and Engineering Program, University of California, San Diego, La Jolla, CA 92093, USA
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Hosseinabadi HG, Nieto D, Yousefinejad A, Fattel H, Ionov L, Miri AK. Ink Material Selection and Optical Design Considerations in DLP 3D Printing. APPLIED MATERIALS TODAY 2023; 30:101721. [PMID: 37576708 PMCID: PMC10421610 DOI: 10.1016/j.apmt.2022.101721] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Digital light processing (DLP) 3D printing has become a powerful manufacturing tool for the fast fabrication of complex functional structures. The rapid progress in DLP printing has been linked to research on optical design factors and ink selection. This critical review highlights the main challenges in the DLP printing of photopolymerizable inks. The kinetics equations of photopolymerization reaction in a DLP printer are solved, and the dependence of curing depth on the process optical parameters and ink chemical properties are explained. Developments in DLP platform design and ink selection are summarized, and the roles of monomer structure and molecular weight on DLP printing resolution are shown by experimental data. A detailed guideline is presented to help engineers and scientists to select inks and optical parameters for fabricating functional structures for multi-material and 4D printing applications.
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Affiliation(s)
- Hossein G. Hosseinabadi
- Faculty of Engineering Sciences, Department of Biofabrication, University of Bayreuth, Ludwig Thoma Str. 36A, 95447 Bayreuth, Germany
| | - Daniel Nieto
- Complex Tissue Regeneration Department, MERLN Institute for Technology Inspired Regenerative Medicine, Universiteitssingel 40, 6229ER Maastricht, The Netherlands
- Department of Biomedical Engineering, New Jersey Institute of Technology, 323 Dr Martin Luther King Jr Blvd, Newark, NJ 07102, USA
| | - Ali Yousefinejad
- Faculty of Engineering Sciences, Department of Biofabrication, University of Bayreuth, Ludwig Thoma Str. 36A, 95447 Bayreuth, Germany
| | - Hoda Fattel
- Department of Biomedical Engineering, New Jersey Institute of Technology, 323 Dr Martin Luther King Jr Blvd, Newark, NJ 07102, USA
| | - Leonid Ionov
- Faculty of Engineering Sciences, Department of Biofabrication, University of Bayreuth, Ludwig Thoma Str. 36A, 95447 Bayreuth, Germany
| | - Amir K. Miri
- Department of Biomedical Engineering, New Jersey Institute of Technology, 323 Dr Martin Luther King Jr Blvd, Newark, NJ 07102, USA
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Dadhich P, Kumar P, Roy A, Bitar KN. Advances in 3D Printing Technology for Tissue Engineering. Regen Med 2023. [DOI: 10.1007/978-981-19-6008-6_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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Yan L, Entezari A, Zhang Z, Zhong J, Liang J, Li Q, Qi J. An experimental and numerical study of the microstructural and biomechanical properties of human peripheral nerve endoneurium for the design of tissue scaffolds. Front Bioeng Biotechnol 2022; 10:1029416. [PMID: 36545684 PMCID: PMC9762494 DOI: 10.3389/fbioe.2022.1029416] [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: 09/07/2022] [Accepted: 11/14/2022] [Indexed: 12/12/2022] Open
Abstract
Biomimetic design of scaffold architectures represents a promising strategy to enable the repair of tissue defects. Natural endoneurium extracellular matrix (eECM) exhibits a sophisticated microstructure and remarkable microenvironments conducive for guiding neurite regeneration. Therefore, the analysis of eECM is helpful to the design of bionic scaffold. Unfortunately, a fundamental lack of understanding of the microstructural characteristics and biomechanical properties of the human peripheral nerve eECM exists. In this study, we used microscopic computed tomography (micro-CT) to reconstruct a three-dimensional (3D) eECM model sourced from mixed nerves. The tensile strength and effective modulus of human fresh nerve fascicles were characterized experimentally. Permeability was calculated from a computational fluid dynamic (CFD) simulation of the 3D eECM model. Fluid flow of acellular nerve fascicles was tested experimentally to validate the permeability results obtained from CFD simulations. The key microstructural parameters, such as porosity is 35.5 ± 1.7%, tortuosity in endoneurium (X axis is 1.26 ± 0.028, Y axis is 1.26 ± 0.020 and Z axis is 1.17 ± 0.03, respectively), tortuosity in pore (X axis is 1.50 ± 0.09, Y axis is 1.44 ± 0.06 and Z axis is 1.13 ± 0.04, respectively), surface area-to-volume ratio (SAVR) is 0.165 ± 0.007 μm-1 and pore size is 11.8 ± 2.8 μm, respectively. These were characterized from the 3D eECM model and may exert different effects on the stiffness and permeability. The 3D microstructure of natural peripheral nerve eECM exhibits relatively lower permeability (3.10 m2 × 10-12 m2) than other soft tissues. These key microstructural and biomechanical parameters may play an important role in the design and fabrication of intraluminal guidance scaffolds to replace natural eECM. Our findings can aid the development of regenerative therapies and help improve scaffold design.
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Affiliation(s)
- Liwei Yan
- Department of Microsurgery, Trauma and Hand Surgery, The First Affiliated Hospital of Sun Yat‐sen University, Guangzhou, China
| | - Ali Entezari
- School of Biomedical Engineering, University of Technology Sydney, Ultimo, NSW, Australia,School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, NSW, Australia
| | - Zhongpu Zhang
- School of Computing, Engineering and Mathematics, Western Sydney University, Penrith, NSW, Australia
| | - Jingxiao Zhong
- School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, NSW, Australia
| | - Jing Liang
- Department of Microsurgery, Trauma and Hand Surgery, The First Affiliated Hospital of Sun Yat‐sen University, Guangzhou, China
| | - Qing Li
- School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, NSW, Australia,*Correspondence: Jian Qi, ; Qing Li,
| | - Jian Qi
- Department of Microsurgery, Trauma and Hand Surgery, The First Affiliated Hospital of Sun Yat‐sen University, Guangzhou, China,Guangdong Provincial Key Laboratory for Orthopedics and Traumatology, Guangzhou, China,*Correspondence: Jian Qi, ; Qing Li,
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Micropattern-based nerve guidance conduit with hundreds of microchannels and stem cell recruitment for nerve regeneration. NPJ Regen Med 2022; 7:62. [PMID: 36261427 PMCID: PMC9582221 DOI: 10.1038/s41536-022-00257-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 10/05/2022] [Indexed: 11/12/2022] Open
Abstract
Guiding the regrowth of thousands of nerve fibers within a regeneration-friendly environment enhances the regeneration capacity in the case of peripheral nerve injury (PNI) and spinal cord injury (SCI). Although clinical treatments are available and several studies have been conducted, the development of nerve guidance conduits (NGCs) with desirable properties, including controllable size, hundreds of nerve bundle-sized microchannels, and host stem-cell recruitment, remains challenging. In this study, the micropattern-based fabrication method was combined with stem-cell recruitment factor (substance P, SP) immobilization onto the main material to produce a size-tunable NGC with hundreds of microchannels with stem-cell recruitment capability. The SP-immobilized multiple microchannels aligned the regrowth of nerve fibers and recruited the host stem cells, which enhanced the functional regeneration capacity. This method has wide applicability in the modification and augmentation of NGCs, such as bifurcated morphology or directional topographies on microchannels. Additional improvements in fabrication will advance the regeneration technology and improve the treatment of PNI/SCI.
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Huang WC, Lin CC, Chiu TW, Chen SY. 3D Gradient and Linearly Aligned Magnetic Microcapsules in Nerve Guidance Conduits with Remotely Spatiotemporally Controlled Release to Enhance Peripheral Nerve Repair. ACS APPLIED MATERIALS & INTERFACES 2022; 14:46188-46200. [PMID: 36198117 DOI: 10.1021/acsami.2c11362] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Although numerous strategies have been implemented to develop nerve guidance conduits (NGCs) to treat peripheral nerve injury (PNI), functionalization of an NGC to make it remotely controllable for providing spatiotemporal modulation on in situ nerve tissues remains a challenge. In this study, a gelatin/silk (GS) hydrogel was used to develop an NGC based on its self-owned reversible thermoresponsive sol-to-gel phase transformation ability that permitted rapid three-dimensional (3D) micropatterning of the incorporated nerve growth factor (NGF)-loaded magnetic poly(lactic-co-glycolic acid) (PLGA) microcapsules (called NGF@MPs) via multiple magnetic guidance. The thermally controllable viscosity of GS enabled the rapid formation of a 3D gradient and linearly aligned distribution of NGF@MPs, leading to magnetically controlled 3D gradient release of NGF to enhance topographical nerve guidance and wound healing in PNIs. Particularly, the as-formed micropatterned hydrogel, called NGF@MPs-GS, showed corrugation topography with a pattern height H of 15 μm, which resulted in the linear axon alignment of more than 90% of cells. In addition, by an external magnetic field, spatiotemporal controllability of NGF release was obtained and permitted neurite elongation that was almost 2-fold longer than that in the group with external addition of NGF. Finally, an NGC prototype was fabricated and implanted into the injured sciatic nerve. The patterned implant, assisted by magnetic stimulation, demonstrated accelerated restoration of motor function within 14 days after implantation. It further contributed to the enhancement of axon outgrowth and remyelination after 28 days. This NGC, with controllable mechanical, biochemical, and topographical cues, is a promising platform for the enhancement of nerve regeneration.
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Affiliation(s)
- Wei-Chen Huang
- Department of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Road, Hsinchu300093, Taiwan
| | - Chun-Chang Lin
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Road, Hsinchu300093, Taiwan
| | - Tzai-Wen Chiu
- Department of Biological Science and Technology, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Road, Hsinchu300093, Taiwan
| | - San-Yuan Chen
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Road, Hsinchu300093, Taiwan
- Frontier Research Centre on Fundamental and Applied Sciences of Matters, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu300044, Taiwan
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, No.100, Shih-Chuan 1st Road, Kaohsiung80708, Taiwan
- Graduate Institute of Biomedical Science, China Medical University, No. 91, Hsueh-Shih Road, Taichung40402, Taiwan
- Medical Device Innovation and Translation Center, National Yang Ming Chiao Tung University, Yangming Campus, No. 155, Section 2, Linong Street, Beitou District, Taipei112304, Taiwan
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Huang B, Zhou Y, Wei L, Hu R, Zhang X, Coates P, Sefat F, Zhang W, Lu C. Visible Light 3D Printing of High-Resolution Superelastic Microlattices of Poly(ethylene glycol) Diacrylate/Graphene Oxide Nanocomposites via Continuous Liquid Interface Production. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bingxue Huang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Yi Zhou
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Lingfei Wei
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Rui Hu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Ximu Zhang
- Chongqing Key Laboratory of Oral Disease and Biomedical Sciences and Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education and Stomatological Hospital of Chongqing Medical University, Chongqing 401174, China
| | - Phil Coates
- Interdisciplinary Research Centre in Polymer Science & Technology (Polymer IRC), University of Bradford, Bradford BD7 1DP, West Yorkshire, U.K
| | - Farshid Sefat
- Interdisciplinary Research Centre in Polymer Science & Technology (Polymer IRC), University of Bradford, Bradford BD7 1DP, West Yorkshire, U.K
- Biomedical and Electronics Engineering Department, School of Engineering, University of Bradford, Bradford BD7 1DP, West
Yorkshire, U.K
| | - Wei Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
- Advanced Polymer Materials Research Center of Sichuan University, Shishi 362700, China
| | - Canhui Lu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
- Advanced Polymer Materials Research Center of Sichuan University, Shishi 362700, China
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38
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Maeng WY, Tseng WL, Li S, Koo J, Hsueh YY. Electroceuticals for peripheral nerve regeneration. Biofabrication 2022; 14. [PMID: 35995036 PMCID: PMC10109522 DOI: 10.1088/1758-5090/ac8baa] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 08/22/2022] [Indexed: 11/12/2022]
Abstract
Electroceuticals provide promising opportunities for peripheral nerve regeneration, in terms of modulating the extensive endogenous tissue repair mechanisms between neural cell body, axons and target muscles. However, great challenges remain to deliver effective and controllable electroceuticals via bioelectronic implantable device. In this review, the modern fabrication methods of bioelectronic conduit for bridging critical nerve gaps after nerve injury are summarized, with regard to conductive materials and core manufacturing process. In addition, to deliver versatile electrical stimulation, the integration of implantable bioelectronic device is discussed, including wireless energy harvesters, actuators and sensors. Moreover, a comprehensive insight of beneficial mechanisms is presented, including up-to-date in vitro, in vivo and clinical evidence. By integrating conductive biomaterials, 3D engineering manufacturing process and bioelectronic platform to deliver versatile electroceuticals, the modern biofabrication enables comprehensive biomimetic therapies for neural tissue engineering and regeneration in the new era.
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Affiliation(s)
- Woo-Youl Maeng
- Bio-Medical Engineering, Korea University, B156, B, Hana Science Hall, 145, Anam-ro, Seongbuk-gu, Seoul, Seongbuk-gu, Seoul, 02841, Korea (the Republic of)
| | - Wan Ling Tseng
- Department of Surgery, National Cheng Kung University College of Medicine, No.138, Sheng-Li road, Tainan, 701, TAIWAN
| | - Song Li
- Department of Bioengineering, University of California Los Angeles, 5121 Eng V, Los Angeles, California, 90095, UNITED STATES
| | - Jahyun Koo
- Biomedical Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, 02841, Korea (the Republic of)
| | - Yuan-Yu Hsueh
- Department of Surgery, National Cheng Kung University College of Medicine, No.138, Sheng-Li road, Tainan, 701, TAIWAN
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Keate RL, Tropp J, Collins CP, Ware HOT, Petty AJ, Ameer GA, Sun C, Rivnay J. 3D-Printed Electroactive Hydrogel Architectures with Sub-100 µm Resolution Promote Myoblast Viability. Macromol Biosci 2022; 22:e2200103. [PMID: 35596668 PMCID: PMC9879017 DOI: 10.1002/mabi.202200103] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/30/2022] [Indexed: 01/29/2023]
Abstract
3D-printed hydrogel scaffolds functionalized with conductive polymers have demonstrated significant potential in regenerative applications for their structural tunability, physiochemical compatibility, and electroactivity. Controllably generating conductive hydrogels with fine features, however, has proven challenging. Here, micro-continuous liquid interface production (μCLIP) method is utilized to 3D print poly(2-hydroxyethyl methacrylate) (pHEMA) hydrogels. With a unique in-situ polymerization approach, a sulfonated monomer is first incorporated into the hydrogel matrix and subsequently polymerized into a conjugated polyelectrolyte, poly(4-(2,3-dihydro-thieno[3,4-b][1,4]dioxin-2-ylmethoxy)-butane-1 sulfonic acid sodium salt (PEDOT-S). Rod structures are fabricated at different crosslinking levels to investigate PEDOT-S incorporation and its effect on bulk hydrogel electronic and mechanical properties. After demonstrating that PEDOT-S does not significantly compromise the structures of the bulk material, pHEMA scaffolds are fabricated via μCLIP with features smaller than 100 µm. Scaffold characterization confirms PEDOT-S incorporation bolstered conductivity while lowering overall modulus. Finally, C2C12 myoblasts are seeded on PEDOT-pHEMA structures to verify cytocompatibility and the potential of this material in future regenerative applications. PEDOT-pHEMA scaffolds promote increased cell viability relative to their non-conductive counterparts and differentially influence cell organization. Taken together, this study presents a promising new approach for fabricating complex conductive hydrogel structures for regenerative applications.
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Affiliation(s)
- Rebecca L. Keate
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA,Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL 60208, USA,Simpson Querrey Institute, Northwestern University, Chicago, IL 60611, USA
| | - Joshua Tropp
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA,Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL 60208, USA,Simpson Querrey Institute, Northwestern University, Chicago, IL 60611, USA
| | - Caralyn P. Collins
- Mechanical Engineering Department, Northwestern University, Evanston, IL 60208, USA
| | - Henry Oliver T. Ware
- Mechanical Engineering Department, Northwestern University, Evanston, IL 60208, USA
| | - Anthony J. Petty
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA,Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL 60208, USA,Simpson Querrey Institute, Northwestern University, Chicago, IL 60611, USA
| | - Guillermo A. Ameer
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA,Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Cheng Sun
- Mechanical Engineering Department, Northwestern University, Evanston, IL 60208, USA
| | - Jonathan Rivnay
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA,Center for Advanced Regenerative Engineering, Northwestern University, Evanston, IL 60208, USA,Simpson Querrey Institute, Northwestern University, Chicago, IL 60611, USA
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40
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Recent advances in 3D-printed polylactide and polycaprolactone-based biomaterials for tissue engineering applications. Int J Biol Macromol 2022; 218:930-968. [PMID: 35896130 DOI: 10.1016/j.ijbiomac.2022.07.140] [Citation(s) in RCA: 87] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 07/13/2022] [Accepted: 07/18/2022] [Indexed: 01/10/2023]
Abstract
The three-dimensional printing (3DP) also known as the additive manufacturing (AM), a novel and futuristic technology that facilitates the printing of multiscale, biomimetic, intricate cytoarchitecture, function-structure hierarchy, multi-cellular tissues in the complicated micro-environment, patient-specific scaffolds, and medical devices. There is an increasing demand for developing 3D-printed products that can be utilized for organ transplantations due to the organ shortage. Nowadays, the 3DP has gained considerable interest in the tissue engineering (TE) field. Polylactide (PLA) and polycaprolactone (PCL) are exemplary biomaterials with excellent physicochemical properties and biocompatibility, which have drawn notable attraction in tissue regeneration. Herein, the recent advancements in the PLA and PCL biodegradable polymer-based composites as well as their reinforcement with hydrogels and bio-ceramics scaffolds manufactured through 3DP are systematically summarized and the applications of bone, cardiac, neural, vascularized and skin tissue regeneration are thoroughly elucidated. The interaction between implanted biodegradable polymers, in-vivo and in-vitro testing models for possible evaluation of degradation and biological properties are also illustrated. The final section of this review incorporates the current challenges and future opportunities in the 3DP of PCL- and PLA-based composites that will prove helpful for biomedical engineers to fulfill the demands of the clinical field.
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41
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Patel M, Ahn S, Koh WG. Topographical pattern for neuronal tissue engineering. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Gong B, Zhang X, Zahrani AA, Gao W, Ma G, Zhang L, Xue J. Neural tissue engineering: From bioactive scaffolds and in situ monitoring to regeneration. EXPLORATION (BEIJING, CHINA) 2022; 2:20210035. [PMID: 37323703 PMCID: PMC10190951 DOI: 10.1002/exp.20210035] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 03/09/2022] [Indexed: 06/17/2023]
Abstract
Peripheral nerve injury is a large-scale problem that annually affects more than several millions of people all over the world. It remains a great challenge to effectively repair nerve defects. Tissue engineered nerve guidance conduits (NGCs) provide a promising platform for peripheral nerve repair through the integration of bioactive scaffolds, biological effectors, and cellular components. Herein, we firstly describe the pathogenesis of peripheral nerve injuries at different orders of severity to clarify their microenvironments and discuss the clinical treatment methods and challenges. Then, we discuss the recent progress on the design and construction of NGCs in combination with biological effectors and cellular components for nerve repair. Afterward, we give perspectives on imaging the nerve and/or the conduit to allow for the in situ monitoring of the nerve regeneration process. We also cover the applications of different postoperative intervention treatments, such as electric field, magnetic field, light, and ultrasound, to the well-designed conduit and/or the nerve for improving the repair efficacy. Finally, we explore the prospects of multifunctional platforms to promote the repair of peripheral nerve injury.
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Affiliation(s)
- Bowen Gong
- Beijing Laboratory of Biomedical MaterialsBeijing University of Chemical TechnologyBeijingChina
- State Key Laboratory of Organic–Inorganic CompositesBeijing University of Chemical TechnologyBeijingChina
| | - Xindan Zhang
- Beijing Laboratory of Biomedical MaterialsBeijing University of Chemical TechnologyBeijingChina
- State Key Laboratory of Organic–Inorganic CompositesBeijing University of Chemical TechnologyBeijingChina
| | - Ahmed Al Zahrani
- Department of Mechanical and Materials EngineeringUniversity of JeddahJeddahSaudi Arabia
| | - Wenwen Gao
- Department of RadiologyChina–Japan Friendship HospitalBeijingChina
| | - Guolin Ma
- Department of RadiologyChina–Japan Friendship HospitalBeijingChina
| | - Liqun Zhang
- Beijing Laboratory of Biomedical MaterialsBeijing University of Chemical TechnologyBeijingChina
- State Key Laboratory of Organic–Inorganic CompositesBeijing University of Chemical TechnologyBeijingChina
| | - Jiajia Xue
- Beijing Laboratory of Biomedical MaterialsBeijing University of Chemical TechnologyBeijingChina
- State Key Laboratory of Organic–Inorganic CompositesBeijing University of Chemical TechnologyBeijingChina
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43
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Zhong Y, Tian Z, Luo P, Sun S, Zhu S. Research on the Contour Modeling Method of Peripheral Nerve Internal Fascicular Groups During the Non-Splitting/Merging Phase and Distribution Rules of Model Parameters. Front Cell Neurosci 2022; 16:860103. [PMID: 35634472 PMCID: PMC9136221 DOI: 10.3389/fncel.2022.860103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectivesTo investigate benchmark data for docking the same functional nerve bundles based on the mathematical contour model of peripheral nerve internal fascicular groups.Materials and MethodsFirst, the discrete points of the original contours of nerve bundles were extracted into a dataset through the image process. Second, two indicators were employed to evaluate the modeling precision. Third, the dataset was modeled by the 3rd-order quasi-uniform B-spline method. Fourth, the dataset was modeled by the Fourier transform method. Fifth, all contours were modeled by the 4th-order Fourier method. Then, the histogram of each parameter from the Fourier model was calculated. Furthermore, the probability density function was fit to each parameter.ResultsFirst, the optimized sampling number of the 3rd-order quasi-uniform B-spline method is 21. The sampling number is the control point number of the 3rd-order quasi-uniform B-spline, which produces more than 63 parameters in the model. Second, when the Fourier transform model is employed to model the contour of nerve bundles, the optimized order number yields a 4th-order Fourier model, which has 16 parameters. Third, when all contours are modeled by the 4th-order Fourier model, the statistical analysis shows that (1) the pitch parameters a1 and d1 obey the mixed Gaussian distribution; (2) the harmonic parameter b3 obeys the normal distribution; and (3) the pitch parameters b1 and c1 and the remaining harmonic parameters obey the t distribution with position and scale.ConclusionThis work paves the way for the exploration of the correlation between model parameters and spatial extension.
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Affiliation(s)
- Yingchun Zhong
- School of Automation, Guangdong University of Technology, Guangzhou, China
| | - Zhihao Tian
- School of Automation, Guangdong University of Technology, Guangzhou, China
| | - Peng Luo
- Department of Bone and Joint Surgery, Shenzhen Sixth People's Hospital, Shenzhen, China
| | - Siyu Sun
- School of Automation, Guangdong University of Technology, Guangzhou, China
| | - Shuang Zhu
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
- *Correspondence: Shuang Zhu
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Li H, Yu K, Zhang P, Ye Y, Shu Q. A printability study of multichannel nerve guidance conduits using projection-based three-dimensional printing. J Biomater Appl 2022; 37:538-550. [PMID: 35549934 DOI: 10.1177/08853282221101148] [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: 11/17/2022]
Abstract
Multichannel nerve guidance conduits (NGCs) replicating the native architecture of peripheral nerves have emerged as promising alternatives to autologous nerve grafts. However, manufacturing multichannel NGCs is challenging in terms of desired structural stability and resolution. In this study, we systematically investigated the effects of photopolymer properties, inner diameter dimensions, printing parameters, and different conditions on multichannel NGCs printability using projection-based three-dimensional printing. Low viscosity and rapid photocuring properties were essential requirements. A standard model was generated to evaluate multichannel NGC printed quality. The results showed that printing deviations decreased with increased mechanical strength and inner diameter. Subsequently, gelatin methacrylate (GelMA) NGCs was selected as a representative. It was found that printing conditions, including printing temperature, peeling, and shrinkage affected final NGC accuracy and quality. PC-12 cells cultured with the GelMA NGCs displayed non-toxic and promoted cell migration. Our research provides an effective, time-saving, and high-resolution technology for manufacturing multichannel NGCs with high fidelity, which may be used as reference templates for biomedical applications.
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Affiliation(s)
- Haibing Li
- Department of Paediatric Orthopaedics, The Children's Hospital, 605254Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Kang Yu
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, 529107Zhejiang University, Hangzhou, China
| | - Peng Zhang
- Engineering for Life Group (EFL), 529107Zhejiang University School of Mechanical Engineering, China
| | - Yensong Ye
- Department of Paediatric Orthopaedics, The Children's Hospital, 605254Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Qiang Shu
- Department of Paediatric Orthopaedics, The Children's Hospital, 605254Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
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45
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Zhao C, Lv Q, Wu W. Application and Prospects of Hydrogel Additive Manufacturing. Gels 2022; 8:gels8050297. [PMID: 35621595 PMCID: PMC9141908 DOI: 10.3390/gels8050297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/07/2022] [Accepted: 05/08/2022] [Indexed: 02/07/2023] Open
Abstract
Hydrogel has become a commonly used material for 3D and 4D printing due to its favorable biocompatibility and low cost. Additive manufacturing, also known as 3D printing, was originally referred to as rapid prototyping manufacturing. Variable-feature rapid prototyping technology, also known as 4D printing, is a combination of materials, mathematics, and additives. This study constitutes a literature review to address hydrogel-based additive manufacturing technologies, introducing the characteristics of commonly used 3D printing hydrogel methods, such as direct ink writing, fused deposition modeling, and stereolithography. With this review, we also investigated the stimulus types, as well as the advantages and disadvantages of various stimulus-responsive hydrogels in smart hydrogels; non-responsive hydrogels; and various applications of additive manufacturing hydrogels, such as neural catheter preparation and drug delivery. The opportunities, challenges, and future prospects of hydrogel additive manufacturing technologies are discussed.
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Affiliation(s)
- Changlong Zhao
- Department of Mechanical and Vehicle Engineering, Changchun University, Changchun 130012, China; (C.Z.); (Q.L.)
| | - Qiyin Lv
- Department of Mechanical and Vehicle Engineering, Changchun University, Changchun 130012, China; (C.Z.); (Q.L.)
| | - Wenzheng Wu
- Department of Mechanical and Aerospace Engineering, Jilin University, Changchun 130025, China
- Correspondence:
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Zhang Q, Bei HP, Zhao M, Dong Z, Zhao X. Shedding light on 3D printing: Printing photo-crosslinkable constructs for tissue engineering. Biomaterials 2022; 286:121566. [DOI: 10.1016/j.biomaterials.2022.121566] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 04/25/2022] [Accepted: 05/03/2022] [Indexed: 12/11/2022]
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Murphy CA, Lim KS, Woodfield TBF. Next Evolution in Organ-Scale Biofabrication: Bioresin Design for Rapid High-Resolution Vat Polymerization. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2107759. [PMID: 35128736 DOI: 10.1002/adma.202107759] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 01/30/2022] [Indexed: 06/14/2023]
Abstract
The field of bioprinting has made significant advancements in recent years and allowed for the precise deposition of biomaterials and cells. However, within this field lies a major challenge, which is developing high resolution constructs, with complex architectures. In an effort to overcome these challenges a biofabrication technique known as vat polymerization is being increasingly investigated due to its high fabrication accuracy and control of resolution (µm scale). Despite the progress made in developing hydrogel precursors for bioprinting techniques, such as extrusion-based bioprinting, there is a major lack in developing hydrogel precursor bioresins for vat polymerization. This is due to the specific unique properties and characteristics required for vat polymerization, from lithography to the latest volumetric printing. This is of major concern as the shortage of bioresins available has a significant impact on progressing this technology and exploring its full potential, including speed, resolution, and scale. Therefore, this review discusses the key requirements that need to be addressed in successfully developing a bioresin. The influence of monomer architecture and bioresin composition on printability is described, along with key fundamental parameters that can be altered to increase printing accuracy. Finally, recent advancements in bioresins are discussed together with future directions.
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Affiliation(s)
- Caroline A Murphy
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) Group, Department of Orthopaedic Surgery and Musculoskeletal Medicine, Centre for Bioengineering and Nanomedicine, University of Otago, Christchurch, 8011, New Zealand
| | - Khoon S Lim
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) Group, Department of Orthopaedic Surgery and Musculoskeletal Medicine, Centre for Bioengineering and Nanomedicine, University of Otago, Christchurch, 8011, New Zealand
- Light Activated Biomaterials (LAB) Group, Department of Orthopaedic Surgery and Musculoskeletal Medicine, Centre for Bioengineering and Nanomedicine, University of Otago, Christchurch, 8011, New Zealand
| | - Tim B F Woodfield
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) Group, Department of Orthopaedic Surgery and Musculoskeletal Medicine, Centre for Bioengineering and Nanomedicine, University of Otago, Christchurch, 8011, New Zealand
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Yan Y, Yao R, Zhao J, Chen K, Duan L, Wang T, Zhang S, Guan J, Zheng Z, Wang X, Liu Z, Li Y, Li G. Implantable nerve guidance conduits: Material combinations, multi-functional strategies and advanced engineering innovations. Bioact Mater 2022; 11:57-76. [PMID: 34938913 PMCID: PMC8665266 DOI: 10.1016/j.bioactmat.2021.09.030] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/17/2021] [Accepted: 09/26/2021] [Indexed: 01/15/2023] Open
Abstract
Nerve guidance conduits (NGCs) have attracted much attention due to their great necessity and applicability in clinical use for the peripheral nerve repair. Great efforts in recent years have been devoted to the development of high-performance NGCs using various materials and strategies. The present review provides a comprehensive overview of progress in the material innovation, structural design, advanced engineering technologies and multi functionalization of state-of-the-art nerve guidance conduits NGCs. Abundant advanced engineering technologies including extrusion-based system, laser-based system, and novel textile forming techniques in terms of weaving, knitting, braiding, and electrospinning techniques were also analyzed in detail. Findings arising from this review indicate that the structural mimetic NGCs combined with natural and synthetic materials using advanced manufacturing technologies can make full use of their complementary advantages, acquiring better biomechanical properties, chemical stability and biocompatibility. Finally, the existing challenges and future opportunities of NGCs were put forward aiming for further research and applications of NGCs.
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Affiliation(s)
- Yixin Yan
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
- Department of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Ruotong Yao
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Jingyuan Zhao
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Kaili Chen
- Department of Materials, Imperial College London, SW7 2AZ, UK
| | - Lirong Duan
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Tian Wang
- Wilson College of Textiles, North Carolina State University, Raleigh, 27695, USA
| | - Shujun Zhang
- Research Centre of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Jinping Guan
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Zhaozhu Zheng
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Xiaoqin Wang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Zekun Liu
- Department of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Yi Li
- Department of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Gang Li
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
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Mo X, Ouyang L, Xiong Z, Zhang T. Advances in Digital Light Processing of Hydrogels. Biomed Mater 2022; 17. [PMID: 35477166 DOI: 10.1088/1748-605x/ac6b04] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 04/27/2022] [Indexed: 11/11/2022]
Abstract
Hydrogels, three-dimensional (3D) networks of hydrophilic polymers formed in water, are a significant type of soft matter used in fundamental and applied sciences. Hydrogels are of particular interest for biomedical applications, owing to their soft elasticity and good biocompatibility. However, the high water content and soft nature of hydrogels often make it difficult to process them into desirable solid forms. The development of 3D printing (3DP) technologies has provided opportunities for the manufacturing of hydrogels, by adopting a freeform fabrication method. Owing to its high printing speed and resolution, vat photopolymerization 3DP has recently attracted considerable interest for hydrogel fabrication, with digital light processing (DLP) becoming a widespread representative technique. Whilst acknowledging that other types of vat photopolymerization 3DP have also been applied for this purpose, we here only focus on DLP and its derivatives. In this review, we first comprehensively outline the most recent advances in both materials and fabrication, including the adaptation of novel hydrogel systems and advances in processing (e.g., volumetric printing and multimaterial integration). Secondly, we summarize the applications of hydrogel DLP, including regenerative medicine, functional microdevices, and soft robotics. To the best of our knowledge, this is the first time that either of these specific review focuses has been adopted in the literature. More importantly, we discuss the major challenges associated with hydrogel DLP and provide our perspectives on future trends. To summarize, this review aims to aid and inspire other researchers investigatng DLP, photocurable hydrogels, and the research fields related to them.
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Affiliation(s)
- Xingwu Mo
- Tsinghua University Department of Mechanical Engineering, Department of Mechanical Engineering, Tsinghua University, Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing, "Biomanufacturing and Engineering Living Systems" Overseas Expertise Introduction Center for Discipline Innovation(111 Center), Beijing, 100084, CHINA
| | - Liliang Ouyang
- Tsinghua University Department of Mechanical Engineering, Department of Mechanical Engineering, Tsinghua University, Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing, "Biomanufacturing and Engineering Living Systems" Overseas Expertise Introduction Center for Discipline Innovation(111 Center), Beijing, 100084, CHINA
| | - Zhuo Xiong
- Tsinghua University Department of Mechanical Engineering, Department of Mechanical Engineering, Tsinghua University, Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing, "Biomanufacturing and Engineering Living Systems" Overseas Expertise Introduction Center for Discipline Innovation(111 Center), Beijing, 100084, CHINA
| | - Ting Zhang
- Tsinghua University Department of Mechanical Engineering, Department of Mechanical Engineering, Tsinghua University, Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing, "Biomanufacturing and Engineering Living Systems" Overseas Expertise Introduction Center for Discipline Innovation(111 Center), Beijing, 100084, CHINA
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Zhang J, Tao J, Cheng H, Liu H, Wu W, Dong Y, Liu X, Gou M, Yang S, Xu J. Nerve transfer with 3D-printed branch nerve conduits. BURNS & TRAUMA 2022; 10:tkac010. [PMID: 35441080 PMCID: PMC9012979 DOI: 10.1093/burnst/tkac010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 02/15/2022] [Accepted: 02/27/2022] [Indexed: 02/05/2023]
Abstract
Background Nerve transfer is an important clinical surgical procedure for nerve repair by the coaptation of a healthy donor nerve to an injured nerve. Usually, nerve transfer is performed in an end-to-end manner, which will lead to functional loss of the donor nerve. In this study, we aimed to evaluate the efficacy of 3D-printed branch nerve conduits in nerve transfer. Methods Customized branch conduits were constructed using gelatine-methacryloyl by 3D printing. The nerve conduits were characterized both in vitro and in vivo. The efficacy of 3D-printed branch nerve conduits in nerve transfer was evaluated in rats through electrophysiology testing and histological evaluation. Results The results obtained showed that a single nerve stump could form a complex nerve network in the 3D-printed multibranch conduit. A two-branch conduit was 3D printed for transferring the tibial nerve to the peroneal nerve in rats. In this process, the two branches were connected to the distal tibial nerve and peroneal nerve. It was found that the two nerves were successfully repaired with functional recovery. Conclusions It is implied that the two-branch conduit could not only repair the peroneal nerve but also preserve partial function of the donor tibial nerve. This work demonstrated that 3D-printed branch nerve conduits provide a potential method for nerve transfer.
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Affiliation(s)
- Jing Zhang
- Department of Neurosurgery, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Jie Tao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Hao Cheng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Haofan Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Wenbi Wu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Yinchu Dong
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Xuesong Liu
- Department of Neurosurgery, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Maling Gou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Siming Yang
- Key Laboratory of Wound Repair and Regeneration of PLA, Chinese PLA General Hospital, Medical College of PLA, Beijing 100853, P.R. China
| | - Jianguo Xu
- Department of Neurosurgery, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
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