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Soltani Khaboushan A, Azimzadeh A, Behboodi Tanourlouee S, Mamdoohi M, Kajbafzadeh AM, Slavin KV, Rahimi-Movaghar V, Hassannejad Z. Electrical stimulation enhances sciatic nerve regeneration using a silk-based conductive scaffold beyond traditional nerve guide conduits. Sci Rep 2024; 14:15196. [PMID: 38956215 PMCID: PMC11219763 DOI: 10.1038/s41598-024-65286-9] [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: 04/03/2024] [Accepted: 06/18/2024] [Indexed: 07/04/2024] Open
Abstract
Despite recent advancements in peripheral nerve regeneration, the creation of nerve conduits with chemical and physical cues to enhance glial cell function and support axonal growth remains challenging. This study aimed to assess the impact of electrical stimulation (ES) using a conductive nerve conduit on sciatic nerve regeneration in a rat model with transection injury. The study involved the fabrication of conductive nerve conduits using silk fibroin and Au nanoparticles (AuNPs). Collagen hydrogel loaded with green fluorescent protein (GFP)-positive adipose-derived mesenchymal stem cells (ADSCs) served as the filling for the conduit. Both conductive and non-conductive conduits were applied with and without ES in rat models. Locomotor recovery was assessed using walking track analysis. Histological evaluations were performed using H&E, luxol fast blue staining and immunohistochemistry. Moreover, TEM analysis was conducted to distinguish various ultrastructural aspects of sciatic tissue. In the ES + conductive conduit group, higher S100 (p < 0.0001) and neurofilament (p < 0.001) expression was seen after 6 weeks. Ultrastructural evaluations showed that conductive scaffolds with ES minimized Wallerian degeneration. Furthermore, the conductive conduit with ES group demonstrated significantly increased myelin sheet thickness and decreased G. ratio compared to the autograft. Immunofluorescent images confirmed the presence of GFP-positive ADSCs by the 6th week. Locomotor recovery assessments revealed improved function in the conductive conduit with ES group compared to the control group and groups without ES. These results show that a Silk/AuNPs conduit filled with ADSC-seeded collagen hydrogel can function as a nerve conduit, aiding in the restoration of substantial gaps in the sciatic nerve with ES. Histological and locomotor evaluations indicated that ES had a greater impact on functional recovery compared to using a conductive conduit alone, although the use of conductive conduits did enhance the effects of ES.
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Affiliation(s)
- Alireza Soltani Khaboushan
- Pediatric Urology and Regenerative Medicine Research Center, Gene, Cell and Tissue Research Institute, Children's Medical Center, Tehran University of Medical Sciences, No. 62, Dr. Gharib's Street, Keshavarz Boulevard, Tehran, 1419733151, Iran
- Students' Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Ashkan Azimzadeh
- Pediatric Urology and Regenerative Medicine Research Center, Gene, Cell and Tissue Research Institute, Children's Medical Center, Tehran University of Medical Sciences, No. 62, Dr. Gharib's Street, Keshavarz Boulevard, Tehran, 1419733151, Iran
| | - Saman Behboodi Tanourlouee
- Pediatric Urology and Regenerative Medicine Research Center, Gene, Cell and Tissue Research Institute, Children's Medical Center, Tehran University of Medical Sciences, No. 62, Dr. Gharib's Street, Keshavarz Boulevard, Tehran, 1419733151, Iran
| | - Melina Mamdoohi
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Abdol-Mohammad Kajbafzadeh
- Pediatric Urology and Regenerative Medicine Research Center, Gene, Cell and Tissue Research Institute, Children's Medical Center, Tehran University of Medical Sciences, No. 62, Dr. Gharib's Street, Keshavarz Boulevard, Tehran, 1419733151, Iran
| | - Konstantin V Slavin
- Department of Neurosurgery, University of Illinois at Chicago, Chicago, IL, USA
| | - Vafa Rahimi-Movaghar
- Sina Trauma and Surgery Research Center, Sina Hospital, Tehran University of Medical Sciences, Hassan-Abad Square, Imam Khomeini Ave., Tehran, 11365-3876, Iran.
| | - Zahra Hassannejad
- Pediatric Urology and Regenerative Medicine Research Center, Gene, Cell and Tissue Research Institute, Children's Medical Center, Tehran University of Medical Sciences, No. 62, Dr. Gharib's Street, Keshavarz Boulevard, Tehran, 1419733151, Iran.
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2
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Veiga A, Foster O, Kaplan DL, Oliveira AL. Expanding the boundaries of silk sericin biomaterials in biomedical applications. J Mater Chem B 2024. [PMID: 38935038 DOI: 10.1039/d4tb00386a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Silk sericin (SS) has a long history as a by-product of the textile industry. SS has emerged as a sustainable material for biomedical engineering due to its material properties including water solubility, diverse impact on biological activities including antibacterial and antioxidant properties, and ability to promote cell adhesion and proliferation. This review addresses the origin, structure, properties, extraction, and underlying functions of this protein. An overview of the growing research studies and market evolution is presented, along with highlights of the most common fabrication matrices (hydrogels, bioinks, porous and fibrous scaffolds) and tissue engineering applications. Finally, the future trends with this protein as a multifaceted toolbox for bioengineering are explored, along with the challenges with SS. Overall, the present review can serve as a foundation for the creation of innovative biomaterials utilizing SS as a fundamental building block that hold market potential.
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Affiliation(s)
- Anabela Veiga
- CBQF-Centro de Biotecnologia e Química Fina-Laboratório Associado, Universidade Católica Portuguesa, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
- LEPABE-Laboratory for Process Engineering, Environment, Biotechnology & Energy, Department of Chemical Engineering, Faculty of Engineering of the University of Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
- Department of Biomedical Engineering, Tufts University, 4 Colby St., Medford, MA 02155, USA
| | - Olivia Foster
- Department of Biomedical Engineering, Tufts University, 4 Colby St., Medford, MA 02155, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby St., Medford, MA 02155, USA
| | - Ana Leite Oliveira
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
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3
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Wang J, Liu H, Shi X, Qin S, Liu J, Lv Q, Liu J, Li Q, Wang Z, Wang L. Development and Application of an Advanced Biomedical Material-Silk Sericin. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2311593. [PMID: 38386199 DOI: 10.1002/adma.202311593] [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: 11/02/2023] [Revised: 01/18/2024] [Indexed: 02/23/2024]
Abstract
Sericin, a protein derived from silkworm cocoons, is considered a waste product derived from the silk industry for thousands of years due to a lack of understanding of its properties. However, in recent decades, a range of exciting properties of sericin are studied and uncovered, including cytocompatibility, low-immunogenicity, photo-luminescence, antioxidant properties, as well as cell-function regulating activities. These properties make sericin-based biomaterials promising candidates for biomedical applications. This review summarizes the properties and bioactivities of silk sericin and highlights the latest developments in sericin in tissue engineering and regenerative medicine. Furthermore, the extended application of sericin in developing flexible electronic devices and 3D bioprinting is also discussed. It is believed that sericin-based biomaterials have great potential of being developed into novel tissue engineering products and smart implantable devices for various medical applications toward improving clinical outcomes.
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Affiliation(s)
- Jian Wang
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Key Laboratory of Regenerative Medicine and Multi-disciplinary Translational Research, Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment, Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Huan Liu
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Key Laboratory of Regenerative Medicine and Multi-disciplinary Translational Research, Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment, Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xiaolei Shi
- Hubei Key Laboratory of Regenerative Medicine and Multi-disciplinary Translational Research, Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment, Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Sumei Qin
- Hubei Key Laboratory of Regenerative Medicine and Multi-disciplinary Translational Research, Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment, Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jingwei Liu
- Hubei Key Laboratory of Regenerative Medicine and Multi-disciplinary Translational Research, Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment, Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Qiying Lv
- Hubei Key Laboratory of Regenerative Medicine and Multi-disciplinary Translational Research, Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment, Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jia Liu
- Hubei Key Laboratory of Regenerative Medicine and Multi-disciplinary Translational Research, Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment, Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Qilin's Li
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Key Laboratory of Regenerative Medicine and Multi-disciplinary Translational Research, Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment, Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Zheng Wang
- Hubei Key Laboratory of Regenerative Medicine and Multi-disciplinary Translational Research, Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment, Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Lin Wang
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Key Laboratory of Regenerative Medicine and Multi-disciplinary Translational Research, Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment, Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
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Sun X, Huang X, Liang Q, Wang N, Zheng X, Zhang Q, Yu D. Curcumin-loaded keratin-chitosan hydrogels for enhanced peripheral nerve regeneration. Int J Biol Macromol 2024; 272:132448. [PMID: 38821302 DOI: 10.1016/j.ijbiomac.2024.132448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 05/03/2024] [Accepted: 05/15/2024] [Indexed: 06/02/2024]
Abstract
Peripheral nerve injury often leads to symptoms of motor and sensory impairment, and slow recovery of nerves after injury and limited treatment methods will aggravate symptoms or even lead to lifelong disability. Curcumin can promote peripheral nerve regeneration, but how to accurately deliver the appropriate concentration of curcumin in the local peripheral nerve remains to be solved. In this study, we designed a human hair keratin/chitosan (C/K) hydrogel with sodium tripolyphosphate ions crosslinked to deliver curcumin topically. Chitosan improves the mechanical properties of hydrogels and keratin improves the biocompatibility of hydrogels. C/K hydrogel showed good cytocompatibility, histocompatibility and degradability. In vitro experiments showed that hydrogels can continuously release curcumin for up to 10 days. In addition, a comprehensive analysis of behavioral, electrophysiological, histology, and target organ recovery results in animal experiments showed that locally delivered curcumin can enhance nerve regeneration in addition to hydrogels. In short, we provide a new method that combines the advantages of human hair keratin, chitosan, and curcumin for nerve damage repair.
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Affiliation(s)
- Xiguang Sun
- Department of Hand and Podiatric Surgery, Orthopedics Center, The First Hospital of Jilin University, Jilin University, Changchun 130031, PR China
| | - Xinrui Huang
- Department of Hand and Podiatric Surgery, Orthopedics Center, The First Hospital of Jilin University, Jilin University, Changchun 130031, PR China; Plastic and Burn Surgery, Children's Hospital Affiliated to Shandong University, Jinan Children's Hospital, Jinan, Shandong Province, China
| | - Quanduo Liang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Nan Wang
- Department of Hand and Podiatric Surgery, Orthopedics Center, The First Hospital of Jilin University, Jilin University, Changchun 130031, PR China
| | - Xiaotian Zheng
- Core facility of the First Hospital of Jilin University, #519 Dongminzhu Str., Changchun, Jilin 130061, PR China
| | - Qiang Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
| | - Dehai Yu
- Core facility of the First Hospital of Jilin University, #519 Dongminzhu Str., Changchun, Jilin 130061, PR China.
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5
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Zhou W, Rahman MSU, Sun C, Li S, Zhang N, Chen H, Han CC, Xu S, Liu Y. Perspectives on the Novel Multifunctional Nerve Guidance Conduits: From Specific Regenerative Procedures to Motor Function Rebuilding. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307805. [PMID: 37750196 DOI: 10.1002/adma.202307805] [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: 08/03/2023] [Revised: 09/19/2023] [Indexed: 09/27/2023]
Abstract
Peripheral nerve injury potentially destroys the quality of life by inducing functional movement disorders and sensory capacity loss, which results in severe disability and substantial psychological, social, and financial burdens. Autologous nerve grafting has been commonly used as treatment in the clinic; however, its rare donor availability limits its application. A series of artificial nerve guidance conduits (NGCs) with advanced architectures are also proposed to promote injured peripheral nerve regeneration, which is a complicated process from axon sprouting to targeted muscle reinnervation. Therefore, exploring the interactions between sophisticated NGC complexes and versatile cells during each process including axon sprouting, Schwann cell dedifferentiation, nerve myelination, and muscle reinnervation is necessary. This review highlights the contribution of functional NGCs and the influence of microscale biomaterial architecture on biological processes of nerve repair. Progressive NGCs with chemical molecule induction, heterogenous topographical morphology, electroactive, anisotropic assembly microstructure, and self-powered electroactive and magnetic-sensitive NGCs are also collected, and they are expected to be pioneering features in future multifunctional and effective NGCs.
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Affiliation(s)
- Weixian Zhou
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Muhammad Saif Ur Rahman
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education Guangdong province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Chengmei Sun
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education Guangdong province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Shilin Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Nuozi Zhang
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Hao Chen
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Charles C Han
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
- Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Shanshan Xu
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
- Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Ying Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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6
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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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7
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Eivazzadeh-Keihan R, Sadat Z, Lalebeigi F, Naderi N, Panahi L, Ganjali F, Mahdian S, Saadatidizaji Z, Mahdavi M, Chidar E, Soleimani E, Ghaee A, Maleki A, Zare I. Effects of mechanical properties of carbon-based nanocomposites on scaffolds for tissue engineering applications: a comprehensive review. NANOSCALE ADVANCES 2024; 6:337-366. [PMID: 38235087 PMCID: PMC10790973 DOI: 10.1039/d3na00554b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 12/03/2023] [Indexed: 01/19/2024]
Abstract
Mechanical properties, such as elasticity modulus, tensile strength, elongation, hardness, density, creep, toughness, brittleness, durability, stiffness, creep rupture, corrosion and wear, a low coefficient of thermal expansion, and fatigue limit, are some of the most important features of a biomaterial in tissue engineering applications. Furthermore, the scaffolds used in tissue engineering must exhibit mechanical and biological behaviour close to the target tissue. Thus, a variety of materials has been studied for enhancing the mechanical performance of composites. Carbon-based nanostructures, such as graphene oxide (GO), reduced graphene oxide (rGO), carbon nanotubes (CNTs), fibrous carbon nanostructures, and nanodiamonds (NDs), have shown great potential for this purpose. This is owing to their biocompatibility, high chemical and physical stability, ease of functionalization, and numerous surface functional groups with the capability to form covalent bonds and electrostatic interactions with other components in the composite, thus significantly enhancing their mechanical properties. Considering the outstanding capabilities of carbon nanostructures in enhancing the mechanical properties of biocomposites and increasing their applicability in tissue engineering and the lack of comprehensive studies on their biosafety and role in increasing the mechanical behaviour of scaffolds, a comprehensive review on carbon nanostructures is provided in this study.
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Affiliation(s)
- Reza Eivazzadeh-Keihan
- Department of Chemistry, Catalysts and Organic Synthesis Research Laboratory, Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Zahra Sadat
- Department of Chemistry, Catalysts and Organic Synthesis Research Laboratory, Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Farnaz Lalebeigi
- Department of Chemistry, Catalysts and Organic Synthesis Research Laboratory, Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Nooshin Naderi
- Department of Chemistry, Catalysts and Organic Synthesis Research Laboratory, Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Leila Panahi
- Department of Chemistry, Catalysts and Organic Synthesis Research Laboratory, Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Fatemeh Ganjali
- Department of Chemistry, Catalysts and Organic Synthesis Research Laboratory, Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Sakineh Mahdian
- Department of Chemistry, Catalysts and Organic Synthesis Research Laboratory, Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Zahra Saadatidizaji
- Department of Chemistry, Catalysts and Organic Synthesis Research Laboratory, Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences Tehran Iran
| | - Elham Chidar
- Department of Chemistry, Catalysts and Organic Synthesis Research Laboratory, Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Erfan Soleimani
- Department of Chemistry, Catalysts and Organic Synthesis Research Laboratory, Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Azadeh Ghaee
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran P.O. Box 14395-1561 Tehran Iran
| | - Ali Maleki
- Department of Chemistry, Catalysts and Organic Synthesis Research Laboratory, Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Iman Zare
- Research and Development Department, Sina Medical Biochemistry Technologies Co. Ltd Shiraz 7178795844 Iran
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Shar A, Shar A, Joung D. Carbon nanotube nanocomposite scaffolds: advances in fabrication and applications for tissue regeneration and cancer therapy. Front Bioeng Biotechnol 2023; 11:1299166. [PMID: 38179128 PMCID: PMC10764633 DOI: 10.3389/fbioe.2023.1299166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 12/08/2023] [Indexed: 01/06/2024] Open
Abstract
Carbon nanotube (CNT) nanocomposite scaffolds have emerged as highly promising frameworks for tissue engineering research. By leveraging their intrinsic electrical conductivity and valuable mechanical properties, CNTs are commonly dispersed into polymers to create robust, electrically conductive scaffolds that facilitate tissue regeneration and remodeling. This article explores the latest progress and challenges related to CNT dispersion, functionalization, and scaffold printing techniques, including electrospinning and 3D printing. Notably, these CNT scaffolds have demonstrated remarkable positive effects across various cell culture systems, stimulating neuronal growth, promoting cardiomyocyte maturation, and facilitating osteocyte differentiation. These encouraging results have sparked significant interest within the regenerative medicine field, including neural, cardiac, muscle, and bone regenerations. However, addressing the concern of CNT cytotoxicity in these scaffolds remains critical. Consequently, substantial efforts are focused on exploring strategies to minimize cytotoxicity associated with CNT-based scaffolds. Moreover, researchers have also explored the intriguing possibility of utilizing the natural cytotoxic properties of CNTs to selectively target cancer cells, opening up promising avenues for cancer therapy. More research should be conducted on cutting-edge applications of CNT-based scaffolds through phototherapy and electrothermal ablation. Unlike drug delivery systems, these novel methodologies can combine 3D additive manufacturing with the innate physical properties of CNT in response to electromagnetic stimuli to efficiently target localized tumors. Taken together, the unique properties of CNT-based nanocomposite scaffolds position them as promising candidates for revolutionary breakthroughs in both regenerative medicine and cancer treatment. Continued research and innovation in this area hold significant promise for improving healthcare outcomes.
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Affiliation(s)
- Andy Shar
- Department of Physics, Virginia Commonwealth University, Richmond, VA, United States
| | - Angela Shar
- College of Medicine, University of Florida, Gainesville, FL, United States
| | - Daeha Joung
- Department of Physics, Virginia Commonwealth University, Richmond, VA, United States
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, United States
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9
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Rahman M, Mahady Dip T, Padhye R, Houshyar S. Review on electrically conductive smart nerve guide conduit for peripheral nerve regeneration. J Biomed Mater Res A 2023; 111:1916-1950. [PMID: 37555548 DOI: 10.1002/jbm.a.37595] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 01/29/2023] [Accepted: 07/26/2023] [Indexed: 08/10/2023]
Abstract
At present, peripheral nerve injuries (PNIs) are one of the leading causes of substantial impairment around the globe. Complete recovery of nerve function after an injury is challenging. Currently, autologous nerve grafts are being used as a treatment; however, this has several downsides, for example, donor site morbidity, shortage of donor sites, loss of sensation, inflammation, and neuroma development. The most promising alternative is the development of a nerve guide conduit (NGC) to direct the restoration and renewal of neuronal axons from the proximal to the distal end to facilitate nerve regeneration and maximize sensory and functional recovery. Alternatively, the response of nerve cells to electrical stimulation (ES) has a substantial regenerative effect. The incorporation of electrically conductive biomaterials in the fabrication of smart NGCs facilitates the function of ES throughout the active proliferation state. This article overviews the potency of the various categories of electroactive smart biomaterials, including conductive and piezoelectric nanomaterials, piezoelectric polymers, and organic conductive polymers that researchers have employed latterly to fabricate smart NGCs and their potentiality in future clinical application. It also summarizes a comprehensive analysis of the recent research and advancements in the application of ES in the field of NGC.
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Affiliation(s)
- Mustafijur Rahman
- Center for Materials Innovation and Future Fashion (CMIFF), School of Fashion and Textiles, RMIT University, Brunswick, Australia
- Department of Dyes and Chemical Engineering, Bangladesh University of Textiles, Dhaka, Bangladesh
| | - Tanvir Mahady Dip
- Department of Materials, University of Manchester, Manchester, UK
- Department of Yarn Engineering, Bangladesh University of Textiles, Dhaka, Bangladesh
| | - Rajiv Padhye
- Center for Materials Innovation and Future Fashion (CMIFF), School of Fashion and Textiles, RMIT University, Brunswick, Australia
| | - Shadi Houshyar
- School of Engineering, RMIT University, Melbourne, Victoria, Australia
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10
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Lan D, Wu B, Zhang H, Chen X, Li Z, Dai F. Novel Bioinspired Nerve Scaffold with High Synchrony between Biodegradation and Nerve Regeneration for Repair of Peripheral Nerve Injury. Biomacromolecules 2023; 24:5451-5466. [PMID: 37917398 DOI: 10.1021/acs.biomac.3c00920] [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: 11/04/2023]
Abstract
The morphological structure reconstruction and functional recovery of long-distance peripheral nerve injury (PNI) are global medical challenges. Biodegradable nerve scaffolds that provide mechanical support for the growth and extension of neurites are a desired way to repair long-distance PNI. However, the synchrony of scaffold degradation and nerve regeneration is still challenging. Here, a novel bioinspired multichannel nerve guide conduit (MNGC) with topographical cues based on silk fibroin and ε-polylysine modification was constructed. This conduit (SF(A) + PLL MNGC) exhibited sufficient mechanical strength, excellent degradability, and favorable promotion of cell growth. Peripheral nerve repairing was evaluated by an in vivo 10 mm rat sciatic model. In vivo evidence demonstrated that SF(A) + PLL MNGC was completely biodegraded in the body within 4 weeks after providing sufficient physical support and guide for neurite extension, and a 10 mm sciatic nerve defect was effectively repaired without scar formation, indicating a high synchronous effect of scaffold biodegradation and nerve regeneration. More importantly, the regenerated nerve of the SF(A) + PLL MNGC group showed comparable morphological reconstruction and functional recovery to that of autologous nerve transplantation. This work proved that the designed SF(A) + PLL MNGC has potential for application in long-distance PNI repair in the clinic.
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Affiliation(s)
- Dongwei Lan
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
- College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Baiqing Wu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
- College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Haiqiang Zhang
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
- College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Xiang Chen
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
- College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Zhi Li
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
- College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Fangyin Dai
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
- Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400715, China
- College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
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11
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Tai Y, Tonmoy TI, Win S, Brinkley NT, Park BH, Nam J. Enhanced peripheral nerve regeneration by mechano-electrical stimulation. NPJ Regen Med 2023; 8:57. [PMID: 37848428 PMCID: PMC10582163 DOI: 10.1038/s41536-023-00334-y] [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: 04/20/2023] [Accepted: 09/29/2023] [Indexed: 10/19/2023] Open
Abstract
To address limitations in current approaches for treating large peripheral nerve defects, the presented study evaluated the feasibility of functional material-mediated physical stimuli on peripheral nerve regeneration. Electrospun piezoelectric poly(vinylidene fluoride-trifluoroethylene) nanofibers were utilized to deliver mechanical actuation-activated electrical stimulation to nerve cells/tissues in a non-invasive manner. Using morphologically and piezoelectrically optimized nanofibers for neurite extension and Schwann cell maturation based on in vitro experiments, piezoelectric nerve conduits were synthesized and implanted in a rat sciatic nerve transection model to bridge a critical-sized sciatic nerve defect (15 mm). A therapeutic shockwave system was utilized to periodically activate the piezoelectric effect of the implanted nerve conduit on demand. The piezoelectric nerve conduit-mediated mechano-electrical stimulation (MES) induced enhanced peripheral nerve regeneration, resulting in full axon reconnection with myelin regeneration from the proximal to the distal ends over the critical-sized nerve gap. In comparison, a control group, in which the implanted piezoelectric conduits were not activated in vivo, failed to exhibit such nerve regeneration. In addition, at both proximal and distal ends of the implanted conduits, a decreased number of damaged myelination (ovoids), an increased number of myelinated nerves, and a larger axonal diameter were observed under the MES condition as compared to the control condition. Furthermore, unlike the control group, the MES condition exhibited a superior functional nerve recovery, assessed by walking track analysis and polarization-sensitive optical coherence tomography, demonstrating the significant potential of the piezoelectric conduit-based physical stimulation approach for the treatment of peripheral nerve injury.
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Affiliation(s)
- Youyi Tai
- Department of Bioengineering, University of California, Riverside, CA, 92521, USA
| | | | - Shwe Win
- Department of Bioengineering, University of California, Riverside, CA, 92521, USA
| | - Natasha T Brinkley
- Department of Bioengineering, University of California, Riverside, CA, 92521, USA
| | - B Hyle Park
- Department of Bioengineering, University of California, Riverside, CA, 92521, USA
| | - Jin Nam
- Department of Bioengineering, University of California, Riverside, CA, 92521, USA.
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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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Yin S, Zhou J, Wang J, Xia B, Chen G. Preparation and performance of electrically conductive decellularized nerve matrix hydrogel conduits. J Biomater Appl 2023; 38:471-483. [PMID: 37670570 DOI: 10.1177/08853282231200963] [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: 09/07/2023]
Abstract
Peripheral nerve injury (PNI) is one of the major clinical treatment challenges following an impact on the body. When PNI manifests as nerve gaps, surgical connections and exogenous grafts are required. Recently, electrically conductive polymers (CPs) based nerve guidance conduits have yielded promising results for treating PNI. Polypyrrole (PPy) has become one of the most commonly used CPs in PNI repair due to its advantages of high conductivity and excellent biocompatibility. In this study, we combined different PPy concentrations with a chitosan (CS) temperature-sensitive hydrogel system containing decellularized nerve matrix (DNM) to construct the electrically conductive nerve conduits. We evaluated the physical and biological properties of four groups of nerve conduits. It was found that the PPy concentrations were proportional to the electrical conductivity of the nerve conduits. The mechanical properties of the nerve conduits increased with higher PPy concentrations but decreased when the PPy concentration was as high as 8%. Meanwhile, the co-blending of PPy and DNM gave the nerve conduit suitable degradation properties. Furthermore, in vitro cytotoxicity assay and live/dead assay demonstrated these conduits could support the adhesion and growth of cells. In summary, the electrically conductive nerve conduits with high conductivity, mechanical properties, biodegradation characteristics, and cytocompatibility had potential applications in the field of peripheral nerve regeneration.
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Affiliation(s)
- Shiyun Yin
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, China
| | - Jiangyi Zhou
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, China
| | - Jinsong Wang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, China
| | - Bin Xia
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing, China
| | - Guobao Chen
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, China
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14
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Elsori D, Rashid G, Khan NA, Sachdeva P, Jindal R, Kayenat F, Sachdeva B, Kamal MA, Babker AM, Fahmy SA. Nanotube breakthroughs: unveiling the potential of carbon nanotubes as a dual therapeutic arsenal for Alzheimer's disease and brain tumors. Front Oncol 2023; 13:1265347. [PMID: 37799472 PMCID: PMC10548133 DOI: 10.3389/fonc.2023.1265347] [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: 07/22/2023] [Accepted: 08/23/2023] [Indexed: 10/07/2023] Open
Abstract
Alzheimer's disease (AD) and brain tumors are debilitating neurological conditions that pose significant challenges in current medical practices. Existing treatment options for AD primarily focus on symptom management, and brain tumors often require aggressive therapeutic approaches. Novel disease-modifying strategies and therapeutic agents are urgently needed to address the underlying causes of AD pathogenesis and improve brain tumor management. In recent years, nanoparticles (NPs) have shown promise as valuable tools in diagnosing and managing various brain disorders, including AD. Among these, carbon nanotubes (CNTs) have garnered attention for their unique properties and biomedical potential. Their ability to cross the blood-brain barrier (BBB) with ease opens up new possibilities for targeted drug delivery and neuroprotection. This literature review aims to explore the versatile nature of CNTs, which can be functionalized with various biomolecules or substances due to their sp2 hybridization. This adaptability enables them to specifically target cells and deliver medications under specific environmental conditions. Moreover, CNTs possess an exceptional capacity to penetrate cell membranes, making them valuable tools in the treatment of AD and brain tumors. By delving into the role of CNTs in biomedicine, this review sheds light on their potential in managing AD, offering a glimpse of hope for effective disease-modifying options. Understanding the mechanisms of CNTs' action and their capabilities in targeting and delivering medication to affected cells will pave the way for innovative therapeutic strategies that can improve the lives of those afflicted with these devastating neurological conditions. The exploration of CNTs as a dual therapeutic arsenal for both brain tumors and Alzheimer's disease holds great promise and may usher in a new era of effective treatment strategies for these challenging conditions.
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Affiliation(s)
- Deena Elsori
- Faculty of Resillience, Deans Office Rabdan Academy, Abu Dhabi, United Arab Emirates
| | - Gowhar Rashid
- Amity Medical School, Amity University Gurgaon, Haryana, India
| | - Nihad Ashraf Khan
- Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi, India
| | - Punya Sachdeva
- Department of Neuropyschology and Neurosciences, Amity University, Noida, UP, India
| | - Riya Jindal
- Department of Biotechnology, Shoolini University, Himachal Pradesh, India
| | - Falak Kayenat
- Department of Biotechnology, Jamia Hamdard University, New Delhi, India
| | - Bhuvi Sachdeva
- Department of Physics and Astrophysics, Bhagini Nivedita College, University of Delhi, New Delhi, India
| | - Mohammad Azhar Kamal
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia
| | - Asaad Ma Babker
- Department of Medical Laboratory Sciences, Gulf Medical University, Ajman, United Arab Emirates
| | - Sherif Ashraf Fahmy
- Department of Chemistry, School of Life and Medical Sciences, University of Hertfordshire Hosted by Global Academic Foundation, Cairo, Egypt
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15
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Wan T, Wang YL, Zhang FS, Zhang XM, Zhang YC, Jiang HR, Zhang M, Zhang PX. The Porous Structure of Peripheral Nerve Guidance Conduits: Features, Fabrication, and Implications for Peripheral Nerve Regeneration. Int J Mol Sci 2023; 24:14132. [PMID: 37762437 PMCID: PMC10531895 DOI: 10.3390/ijms241814132] [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: 07/08/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Porous structure is an important three-dimensional morphological feature of the peripheral nerve guidance conduit (NGC), which permits the infiltration of cells, nutrients, and molecular signals and the discharge of metabolic waste. Porous structures with precisely customized pore sizes, porosities, and connectivities are being used to construct fully permeable, semi-permeable, and asymmetric peripheral NGCs for the replacement of traditional nerve autografts in the treatment of long-segment peripheral nerve injury. In this review, the features of porous structures and the classification of NGCs based on these characteristics are discussed. Common methods for constructing 3D porous NGCs in current research are described, as well as the pore characteristics and the parameters used to tune the pores. The effects of the porous structure on the physical properties of NGCs, including biodegradation, mechanical performance, and permeability, were analyzed. Pore structure affects the biological behavior of Schwann cells, macrophages, fibroblasts, and vascular endothelial cells during peripheral nerve regeneration. The construction of ideal porous structures is a significant advancement in the regeneration of peripheral nerve tissue engineering materials. The purpose of this review is to generalize, summarize, and analyze methods for the preparation of porous NGCs and their biological functions in promoting peripheral nerve regeneration to guide the development of medical nerve repair materials.
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Affiliation(s)
- Teng Wan
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
| | - Yi-Lin Wang
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
| | - Feng-Shi Zhang
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
| | - Xiao-Meng Zhang
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
| | - Yi-Chong Zhang
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
| | - Hao-Ran Jiang
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
| | - Meng Zhang
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
| | - Pei-Xun Zhang
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
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16
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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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17
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Chen L, Song X, Yao Z, Zhou C, Yang J, Yang Q, Chen J, Wu J, Sun Z, Gu L, Ma Y, Lee SJ, Zhang C, Mao HQ, Sun L. Gelatin nanofiber-reinforced decellularized amniotic membrane promotes axon regeneration and functional recovery in the surgical treatment of peripheral nerve injury. Biomaterials 2023; 300:122207. [PMID: 37352606 DOI: 10.1016/j.biomaterials.2023.122207] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 06/08/2023] [Accepted: 06/12/2023] [Indexed: 06/25/2023]
Abstract
Effective recovery of peripheral nerve injury (PNI) after surgical treatment relies on promoting axon regeneration and minimizing the fibrotic response. Decellularized amniotic membrane (dAM) has unique features as a natural matrix for promoting PNI repair due to its pro-regenerative extracellular matrix (ECM) structure and anti-inflammatory properties. However, the fragile nature and rapid degradation rate of dAM limit its widespread use in PNI surgery. Here we report an engineered composite membrane for PNI repair by combining dAM with gelatin (Gel) nanofiber membrane to construct a Gel nanofiber-dAM composite membrane (Gel-dAM) through interfacial bonding. The Gel-dAM showed enhanced mechanical properties and reduced degradation rate, while retaining maximal bioactivity and biocompatibility of dAM. These factors led to improved axon regeneration, reduced fibrotic response, and better functional recovery in PNI repair. As a fully natural materials-derived off-the-shelf matrix, Gel-dAM exhibits superior clinical translational potential for the surgical treatment of PNI.
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Affiliation(s)
- Long Chen
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, Guizhou, 550000, China; The Lab of Tissue Engineering and Translational Medicine, College of Medicine, Guizhou University, Guiyang, Guizhou, 550000, China
| | - Xiongbo Song
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, Guizhou, 550000, China; The Lab of Tissue Engineering and Translational Medicine, College of Medicine, Guizhou University, Guiyang, Guizhou, 550000, China
| | - Zhicheng Yao
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA; Department of Materials Science and Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Conglai Zhou
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, Guizhou, 550000, China; The Lab of Tissue Engineering and Translational Medicine, College of Medicine, Guizhou University, Guiyang, Guizhou, 550000, China
| | - Junjun Yang
- The Lab of Tissue Engineering and Translational Medicine, College of Medicine, Guizhou University, Guiyang, Guizhou, 550000, China
| | - Qiming Yang
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, Guizhou, 550000, China; The Lab of Tissue Engineering and Translational Medicine, College of Medicine, Guizhou University, Guiyang, Guizhou, 550000, China
| | - Junrong Chen
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, Guizhou, 550000, China; The Lab of Tissue Engineering and Translational Medicine, College of Medicine, Guizhou University, Guiyang, Guizhou, 550000, China
| | - Jiarui Wu
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, Guizhou, 550000, China; The Lab of Tissue Engineering and Translational Medicine, College of Medicine, Guizhou University, Guiyang, Guizhou, 550000, China
| | - Zeyu Sun
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, Guizhou, 550000, China
| | - Liling Gu
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, Guizhou, 550000, China
| | - Yi Ma
- The Lab of Tissue Engineering and Translational Medicine, College of Medicine, Guizhou University, Guiyang, Guizhou, 550000, China
| | - Shin-Jae Lee
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA; Department of Materials Science and Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Chi Zhang
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
| | - Hai-Quan Mao
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA; Department of Materials Science and Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
| | - Li Sun
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, Guizhou, 550000, China; The Lab of Tissue Engineering and Translational Medicine, College of Medicine, Guizhou University, Guiyang, Guizhou, 550000, China.
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Li Y, Wei Y, Zhang G, Zhang Y. Sericin from Fibroin-Deficient Silkworms Served as a Promising Resource for Biomedicine. Polymers (Basel) 2023; 15:2941. [PMID: 37447586 DOI: 10.3390/polym15132941] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/21/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
Sericin, a fascinating natural biomaterial derived from silkworms, has received increasing interest in recent years for its unique bioactivity and high compatibility. Silkworms can be divided into wild-type or silk fibroin-deficient mutants according to whether they synthesize and secrete silk fibroin. Silk fibroin-deficient mutant silkworms and their cocoons are convenient for us to obtain diverse and high-quality sericin, which has been applicated in various fields such as cell culture, tissue engineering, drug delivery, and cosmetics. Here, we present an overview of our silkworm varieties resources, especially silk fibroin-deficient mutant silkworms. We optimized various extraction methods of sericin and summarized the characteristics and advantages of sericin. Finally, we developed and discussed a series of sericin-based biomaterials for promising applications for a diverse set of needs.
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Affiliation(s)
- Yurong Li
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang 212100, China
| | - Yongkang Wei
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, China
| | - Guozheng Zhang
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang 212100, China
| | - Yeshun Zhang
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang 212100, China
- Zhenjiang Zhongnong Biotechnology Co., Ltd., Zhenjiang 212121, China
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19
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Wang Y, Lin J, Chen J, Liang R, Zhang Q, Li J, Shi M, Li L, He X, Lan T, Hui X, Tan H. Biodegradable polyurethane-incorporating decellularized spinal cord matrix scaffolds enhance Schwann cell reprogramming to promote peripheral nerve repair. J Mater Chem B 2023; 11:2115-2128. [PMID: 36779440 DOI: 10.1039/d2tb02679a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Decellularized extracellular matrix (dECM) nerve guide conduits (NGCs) are a promising strategy to replace autogenous nerve grafting for the treatment of peripheral nerve system (PNS) injury. However, dECM conduits with mechanical properties that match those of peripheral nerves are yet to be well developed. Herein, we developed polyurethane-based NGCs incorporating decellularized spinal cord (BWPU-DSC NGCs) to repair peripheral nerves. BWPU-DSC NGCs have an inner three-dimensional micro-nanostructure. The mechanical properties of BWPU-DSC NGCs were similar to those of polyurethane NGCs, which were proven to promote peripheral nerve regeneration. An in vitro study indicated that BWPU-DSC NGCs could boost the proliferation and growth of cell processes in Schwann and neuron-like cells. In a rat sciatic nerve transected injury model, BWPU-DSC NGCs exhibited a dramatic increase in nerve repair, similar to that obtained by the current gold standard autograft implantation at only 6 weeks post-implantation, whereas polyurethane NGCs still displayed incomplete nerve repair. Histological analysis revealed that BWPU-DSC NGCs could induce the reprogramming of Schwann cells to promote axon regeneration and remyelination. Moreover, reprogrammed Schwann cells together with BWPU-DSC NGCs had anti-inflammatory effects and altered the activation state of macrophages to M2 phenotypes to enhance PNS regeneration. In this study, we provided a strategy to prepare polyurethane-based dECM NGCs enriched with bioactive molecules to promote PNS regeneration.
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Affiliation(s)
- Yanchao Wang
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, 610000, China
| | - Jingjing Lin
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X center of materials, Sichuan University, Chengdu, Sichuan, 610065, China.
| | - Jinlin Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X center of materials, Sichuan University, Chengdu, Sichuan, 610065, China.
| | - Ruichao Liang
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, 610000, China
| | - Qiao Zhang
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, 610000, China
| | - Jiehua Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X center of materials, Sichuan University, Chengdu, Sichuan, 610065, China.
| | - Min Shi
- Department of Pathology, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Cancer Hospital affiliate to School of Medicine, UESTC, Chengdu, 610000, China.
| | - Lei Li
- Gastrointestinal Surgery Center, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Cancer Hospital affiliate to School of Medicine, UESTC, Chengdu, 610000, China
| | - Xueling He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X center of materials, Sichuan University, Chengdu, Sichuan, 610065, China. .,Editorial Board of Journal of Sichuan University (Medical Sciences), Sichuan University, Chengdu, Sichuan, 610000, China
| | - Ting Lan
- Department of Pathology, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Cancer Hospital affiliate to School of Medicine, UESTC, Chengdu, 610000, China.
| | - Xuhui Hui
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, 610000, China
| | - Hong Tan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X center of materials, Sichuan University, Chengdu, Sichuan, 610065, China.
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20
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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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21
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Wang Y, Zhu L, Wei L, Zhou Y, Yang Y, Zhang L. A bio-orthogonally functionalized chitosan scaffold with esterase-activatable release for nerve regeneration. Int J Biol Macromol 2023; 229:146-157. [PMID: 36528149 DOI: 10.1016/j.ijbiomac.2022.12.113] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 12/04/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022]
Abstract
Developing nerve conduits with biological cues is a promising approach for repairing peripheral nerve injuries. Although most biological cues incorporated into conduits generally exert their biological functions at the surface, they could not be released into the on-demand regeneration sites under physiological conditions. Herein, we firstly report a bio-orthogonally functionalized chitosan scaffold with esterase-activatable release for peripheral nerve regeneration. In this study, biological cues are not only selectively conjugated into nerve conduits by bio-orthogonal reaction, but also precisely released in on-demand regeneration sites via esterase-activatable cleavage for peripheral nerve repair. Moreover, this nerve scaffold with esterase-activatable release could promote Schwann cells proliferation. In a rat sciatic nerve defect model, the bio-orthogonally functionalized scaffold with esterase-activatable release significantly increased sciatic nerve function recovery and improved target muscles weight. This strategy of incorporating esterase-activatable bioactive cues into peripheral nerve conduits offers great potential in preclinical studies.
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Affiliation(s)
- Yuqing Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, Jiangsu, PR China
| | - Linglin Zhu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, Jiangsu, PR China
| | - Le Wei
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, Jiangsu, PR China
| | - Youlang Zhou
- Hand Surgery Research Center, Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, 226001 Nantong, Jiangsu, PR China
| | - Yumin Yang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, Jiangsu, PR China.
| | - Luzhong Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, Jiangsu, PR China.
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22
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Does Electrical Stimulation through Nerve Conduits Improve Peripheral Nerve Regeneration?—A Systematic Review. J Pers Med 2023; 13:jpm13030414. [PMID: 36983596 PMCID: PMC10057314 DOI: 10.3390/jpm13030414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/15/2023] [Accepted: 02/24/2023] [Indexed: 03/02/2023] Open
Abstract
Background: Peripheral nerve injuries affect over 2% of trauma patients and can lead to severe functional impairment and permanent disability. Autologous nerve transplantation is still the gold standard in the reconstruction of nerve defects. For small defects, conduits can be considered for bridging. Lately, the combined use of conduits and electrical stimulation has gained attention in the treatment of peripheral nerve injury. This review aimed to present the currently available data on this topic. Methods: PubMed, Embase, Medline and the Cochrane Library were searched for studies on electrical stimulation through nerve conduits for nerve defects in in vivo studies. Results: Fifteen studies fit the inclusion criteria. All of them reported on the application of nerve conduits combined with stimulation for sciatic nerve gaps in rats. Functional, electrophysiological and histological evaluations showed improved nerve regeneration after electrical stimulation. High variation was observed in the treatment protocols. Conclusion: Electrically stimulated conduits could improve peripheral nerve regeneration in rat models. The combined application of nerve guidance conduits and electrical stimulation shows promising results and should be further evaluated under standardized conditions.
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23
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Ye H, Chen J, Li YQ, Yang J, Hsu CC, Cao TT. A hyaluronic acid granular hydrogel nerve guidance conduit promotes regeneration and functional recovery of injured sciatic nerves in rats. Neural Regen Res 2023; 18:657-663. [DOI: 10.4103/1673-5374.350212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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24
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Han N, Zhang W, Fang XX, Li QC, Pi W. Reduced graphene oxide-embedded nerve conduits loaded with bone marrow mesenchymal stem cell-derived extracellular vesicles promote peripheral nerve regeneration. Neural Regen Res 2023. [PMID: 35799543 PMCID: PMC9241414 DOI: 10.4103/1673-5374.343889] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
We previously combined reduced graphene oxide (rGO) with gelatin-methacryloyl (GelMA) and polycaprolactone (PCL) to create an rGO-GelMA-PCL nerve conduit and found that the conductivity and biocompatibility were improved. However, the rGO-GelMA-PCL nerve conduits differed greatly from autologous nerve transplants in their ability to promote the regeneration of injured peripheral nerves and axonal sprouting. Extracellular vesicles derived from bone marrow mesenchymal stem cells (BMSCs) can be loaded into rGO-GelMA-PCL nerve conduits for repair of rat sciatic nerve injury because they can promote angiogenesis at the injured site. In this study, 12 weeks after surgery, sciatic nerve function was measured by electrophysiology and sciatic nerve function index, and myelin sheath and axon regeneration were observed by electron microscopy, immunohistochemistry, and immunofluorescence. The regeneration of microvessel was observed by immunofluorescence. Our results showed that rGO-GelMA-PCL nerve conduits loaded with BMSC-derived extracellular vesicles were superior to rGO-GelMA-PCL conduits alone in their ability to increase the number of newly formed vessels and axonal sprouts at the injury site as well as the recovery of neurological function. These findings indicate that rGO-GelMA-PCL nerve conduits loaded with BMSC-derived extracellular vesicles can promote peripheral nerve regeneration and neurological function recovery, and provide a new direction for the curation of peripheral nerve defect in the clinic.
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25
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Hu D, Li T, Liang W, Wang Y, Feng M, Sun J. Silk sericin as building blocks of bioactive materials for advanced therapeutics. J Control Release 2023; 353:303-316. [PMID: 36402235 DOI: 10.1016/j.jconrel.2022.11.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 12/12/2022]
Abstract
Silk sericin is a class of protein biopolymers produced by silkworms. Increasing attention has been paid to silk sericin for biomedical applications in the last decade, not only because of its excellent biocompatibility and biodegradability but also due to the pharmacological activities stemming from its unique amino acid compositions. In this review, the biological properties of silk sericin, including curing specific diseases and promoting tissue regeneration, as well as underlying mechanisms are summarized. We consider the antioxidant activity of silk sericin as a fundamental property, which could account for partial biological activities, despite the exact mechanisms of silk sericin's effect remaining unknown. Based on the reactive groups on silk sericin, approaches of bottom-up fabrication of silk sericin-based biomaterials are highlighted, including non-covalent interactions and chemical reactions (reduction, crosslinking, bioconjugation, and polymerization). We then briefly present the cutting-edge advances of silk sericin-based biomaterials applied in tissue engineering and drug delivery. The challenges of silk sericin-based biomaterials are proposed. With more bioactivities and underlying mechanisms of silk sericin uncovered, it is going to boost the therapeutic potential of silk sericin-based biomaterials.
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Affiliation(s)
- Doudou Hu
- Subtropical Sericulture and Mulberry Resources Protection and Safety Engineering Research Center, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong 510642, China.
| | - Tiandong Li
- Subtropical Sericulture and Mulberry Resources Protection and Safety Engineering Research Center, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Wen'an Liang
- Subtropical Sericulture and Mulberry Resources Protection and Safety Engineering Research Center, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Yeyuan Wang
- Subtropical Sericulture and Mulberry Resources Protection and Safety Engineering Research Center, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Min Feng
- Subtropical Sericulture and Mulberry Resources Protection and Safety Engineering Research Center, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Jingchen Sun
- Subtropical Sericulture and Mulberry Resources Protection and Safety Engineering Research Center, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong 510642, China.
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26
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Habibzadeh F, Sadraei SM, Mansoori R, Singh Chauhan NP, Sargazi G. Nanomaterials supported by polymers for tissue engineering applications: A review. Heliyon 2022; 8:e12193. [PMID: 36578390 PMCID: PMC9791886 DOI: 10.1016/j.heliyon.2022.e12193] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/21/2022] [Accepted: 11/30/2022] [Indexed: 12/15/2022] Open
Abstract
In the biomedical sciences, particularly in wound healing, tissue engineering, and regenerative medicine, the development of natural-based biomaterials as a carrier has revealed a wide range of advantages. Tissue engineering is one of the therapeutic approaches used to replace damaged tissue. Polymers have received a lot of attention for their beneficial interactions with cells, but they have some drawbacks, such as poor mechanical properties. Due to their relatively large surface area, nanoparticles can cause significant changes in polymers and improve their mechanical properties. The nanoparticles incorporated into biomaterial scaffolds have been associated with positive effects on cell adhesion, viability, proliferation, and migration in the majority of studies. This review paper discusses recent applications of polymer-nanoparticle composites in the development of tissue engineering scaffolds, as well as the effects of these nanomaterials in the fields of cardiovascular, neural, bone, and skin tissue engineering.
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Affiliation(s)
- Faezeh Habibzadeh
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Seyed Mahdi Sadraei
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Roghayeh Mansoori
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Narendra Pal Singh Chauhan
- Department of Chemistry, Faculty of Science, Bhupal Nobles' University, Udaipur, Rajasthan, India,Corresponding author.
| | - Ghasem Sargazi
- Noncommunicable Diseases Research Center, Bam University of Medical Sciences, Bam, Iran,Corresponding author.
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27
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Song X, Li M, Feng X, Liu J, Ji H, Gu J. Thermosensitive hydrogel-mediated sphere/fiber multi-dimensional composite nanotube with controlled release of NGF for improved spinal cord injury repair. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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28
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Zhang HJ, Li FS, Wang F, Wang H, He TC, Reid RR, He BC, Xia Q. Transgenic PDGF-BB sericin hydrogel potentiates bone regeneration of BMP9-stimulated mesenchymal stem cells through a crosstalk of the Smad-STAT pathways. Regen Biomater 2022; 10:rbac095. [PMID: 36683747 PMCID: PMC9847547 DOI: 10.1093/rb/rbac095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/08/2022] [Accepted: 11/24/2022] [Indexed: 12/05/2022] Open
Abstract
Silk as a natural biomaterial is considered as a promising bone substitute in tissue regeneration. Sericin and fibroin are the main components of silk and display unique features for their programmable mechanical properties, biocompatibility, biodegradability and morphological plasticity. It has been reported that sericin recombinant growth factors (GFs) can support cell proliferation and induce stem cell differentiation through cross-talk of signaling pathways during tissue regeneration. The transgenic technology allows the productions of bioactive heterologous GFs as fusion proteins with sericin, which are then fabricated into solid matrix or hydrogel format. Herein, using an injectable hydrogel derived from transgenic platelet-derived GF (PDGF)-BB silk sericin, we demonstrated that the PDGF-BB sericin hydrogel effectively augmented osteogenesis induced by bone morphogenetic protein (BMP9)-stimulated mesenchymal stem cells (MSCs) in vivo and in vitro, while inhibiting adipogenic differentiation. Further gene expression and protein-protein interactions studies demonstrated that BMP9 and PDGF-BB synergistically induced osteogenic differentiation through the cross-talk between Smad and Stat3 pathways in MSCs. Thus, our results provide a novel strategy to encapsulate osteogenic factors and osteoblastic progenitors in transgenic sericin-based hydrogel for robust bone tissue engineering.
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Affiliation(s)
- Hui-Jie Zhang
- Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing 400016, China
| | - Fu-Shu Li
- Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
- Department of Pharmacy, Chongqing Emergency Medical Center, Chongqing University Central Hospital, Chongqing 400014, China
| | - Feng Wang
- Biological Science Research Center, Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, China
| | - Han Wang
- Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
- Department of Pharmacy, Panzhou People’s Hospital, Guizhou 553599, China
| | - Tong-Chuan He
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Russell R Reid
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
- Laboratory of Craniofacial Biology and Development, Department of Surgery Section of Plastic Surgery, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Bai-Cheng He
- Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing 400016, China
- Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Qingyou Xia
- Biological Science Research Center, Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, China
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29
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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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30
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Liu J, Shi L, Deng Y, Zou M, Cai B, Song Y, Wang Z, Wang L. Silk sericin-based materials for biomedical applications. Biomaterials 2022; 287:121638. [PMID: 35921729 DOI: 10.1016/j.biomaterials.2022.121638] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 06/04/2022] [Accepted: 06/14/2022] [Indexed: 11/17/2022]
Abstract
Silk sericin, a natural protein extracted from silkworm cocoons, has been extensively studied and utilized in the biomedical field because of its superior biological activities and controllable chemical-physical properties. Sericin is biocompatible and naturally cell adhesive, enabling cell attachment, proliferation, and differentiation in sericin-based materials. Moreover, its abundant functional groups from variable amino acids composition allow sericin to be chemically modified and cross-linked to form versatile constructs serving as alternative matrixes for biomedical applications. Recently, sericin has been constructed into various types of biomaterials for tissue engineering and regenerative medicine, including various bulk constructions (films, hydrogels, scaffolds, conduits, and devices) and micro-nano formulations. In this review, we systemically summarize the properties of silk sericin, introduce its different forms, and demonstrate their newly-developed as well as potential biomedical applications.
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Affiliation(s)
- Jia Liu
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Lin Shi
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yan Deng
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Meizhen Zou
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Bo Cai
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yu Song
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Zheng Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Lin Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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31
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Marin D, Marchesan S. Carbon Graphitization: Towards Greener Alternatives to Develop Nanomaterials for Targeted Drug Delivery. Biomedicines 2022; 10:biomedicines10061320. [PMID: 35740342 PMCID: PMC9220131 DOI: 10.3390/biomedicines10061320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 06/01/2022] [Accepted: 06/02/2022] [Indexed: 11/16/2022] Open
Abstract
Carbon nanomaterials have attracted great interest for their unique physico-chemical properties for various applications, including medicine and, in particular, drug delivery, to solve the most challenging unmet clinical needs. Graphitization is a process that has become very popular for their production or modification. However, traditional conditions are energy-demanding; thus, recent efforts have been devoted to the development of greener routes that require lower temperatures or that use waste or byproducts as a carbon source in order to be more sustainable. In this concise review, we analyze the progress made in the last five years in this area, as well as in their development as drug delivery agents, focusing on active targeting, and conclude with a perspective on the future of the field.
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32
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Zhu Y, Liu H, Qin S, Yang C, Lv Q, Wang Z, Wang L. Antibacterial Sericin Cryogels Promote Hemostasis by Facilitating the Activation of Coagulation Pathway and Platelets. Adv Healthc Mater 2022; 11:e2102717. [PMID: 35132817 DOI: 10.1002/adhm.202102717] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/19/2022] [Indexed: 12/16/2022]
Abstract
Cryogels, with high water/blood absorption, have great potential for rapid hemostasis. In this study, a hemostatic and antibacterial sericin-methacryloyl/Ag cryogel (SMC@Ag) based on freeze polymerization of methacryloyl-modified sericin and in situ reduction of silver ions is developed. The combination of interconnected micropores and Ag NPs endows the cryogel with high water/blood absorption, and outstanding hemostatic and antibacterial performance. SMC@Ag shows much better hemostatic performance than the commercial gelatin sponge in rat liver injury, tail amputation, and femoral artery injury models. Furthermore, the excellent hemostatic activity of SMC@Ag is due to facilitating the coagulation pathway activation and enhancing the platelets adhesion during coagulation process. Overall, SMC@Ag cryogel with excellent hemostatic and antibacterial performance is a suitable candidate for traumatic hemorrhage and wound healing.
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Affiliation(s)
- Yuanyuan Zhu
- Research Center for Tissue Engineering and Regenerative Medicine Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Huan Liu
- Research Center for Tissue Engineering and Regenerative Medicine Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Sumei Qin
- Research Center for Tissue Engineering and Regenerative Medicine Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Cheng Yang
- Research Center for Tissue Engineering and Regenerative Medicine Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Qiying Lv
- Research Center for Tissue Engineering and Regenerative Medicine Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Zheng Wang
- Research Center for Tissue Engineering and Regenerative Medicine Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
- Department of Gastrointestinal Surgery Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Lin Wang
- Research Center for Tissue Engineering and Regenerative Medicine Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
- Department of Clinical Laboratory Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
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33
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Zhao G, Zhou H, Jin G, Jin B, Geng S, Luo Z, Ge Z, Xu F. Rational Design of Electrically Conductive Biomaterials toward Excitable Tissues Regeneration. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nazeri N, Derakhshan MA, Mansoori K, Ghanbari H. Improvement of sciatic nerve regeneration by multichannel nanofibrous membrane-embedded electro-conductive conduits functionalized with laminin. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2022; 33:50. [PMID: 35639181 PMCID: PMC9156509 DOI: 10.1007/s10856-022-06669-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 05/03/2022] [Indexed: 06/15/2023]
Abstract
Multichannel structures in the design of nerve conduits offer potential advantages for regeneration of damaged nerves. However, lack of biochemical cues and electrical stimulation could hamper satisfactory nerve regeneration. The aim of this study was to simultaneously evaluate the effects of topographical, biological, and electrical cues on sciatic nerve regeneration. Accordingly, a series of multichannel nerve conduit was made using longitudinally-aligned laminin-coated poly (lactic-co-glycolic acid) (PLGA)/carbon nanotubes (CNT) nanofibers (NF, mean diameter: 455 ± 362 nm) in the lumen and randomly-oriented polycaprolactone (PCL) NF (mean diameter: 340 ± 200 nm) on the outer surface. In vitro studies revealed that the materials were nontoxic and able to promote cell attachment and proliferation on nanofibers and on fibrin gel. To determine the influence of laminin as biological and CNT as electrical cues on nerve regeneration, either of hollow PCL conduits, PLGA NF-embedded, PLGA/CNT NF-embedded or laminin-coated PLGA/CNT NF-embedded PCL conduits were implanted in rats. A new surgery method was utilized and results were compared with an autograft. The results of motor and sensory tests in addition to histopathological examination of the regenerated nerves demonstrated the formation of nerve fibers in laminin-coated PLGA/CNT NF-embedded PCL conduits. Results suggested that these conduits have the potential to improve sciatic nerve regeneration. Graphical abstract.
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Affiliation(s)
- Niloofar Nazeri
- Cellular and Molecular Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Ali Derakhshan
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Korosh Mansoori
- Neuromusculoskeletal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Hossein Ghanbari
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.
- Research Center for Advanced Technologies in Cardiovascular Medicine, Cardiovascular Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
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Deng Y, Yang C, Zhu Y, Liu W, Li H, Wang L, Chen W, Wang Z, Wang L. Lamprey-Teeth-Inspired Oriented Antibacterial Sericin Microneedles for Infected Wound Healing Improvement. NANO LETTERS 2022; 22:2702-2711. [PMID: 35324204 DOI: 10.1021/acs.nanolett.1c04573] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The therapeutic efficacy of wound infections caused by bacteria is challenged by limited wound repairs and a high risk of inflammation. Microneedles have been generated for wound healing since they are able to efficiently pierce the epidermis and deliver drugs. However, regular microneedles cannot provide oriented traction to "shrink" the wound area, and most microneedles are made of inert polymers, which mainly serve as a support but rarely participate in the following physiological processes. Herein, inspired by lamprey teeth, we designed oriented antibacterial sericin microneedles with dually functionalized needles to provide penetration and directional traction. Sericin, derived from silkworm cocoons, was employed to fabricate microneedle tips, significantly improving skin repair via hair follicle regeneration and angiogenesis. Besides, zinc oxide nanoparticles were integrated as an antibacterial module, endowing the OASM with high bacterial suppression. It is believed that the synergy of these systems may effectively heal infected wounds, suggesting its clinically translational potential.
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Deng P, Chen F, Zhang H, Chen Y, Zhou J. Multifunctional Double-Layer Composite Hydrogel Conduit Based on Chitosan for Peripheral Nerve Repairing. Adv Healthc Mater 2022; 11:e2200115. [PMID: 35396930 DOI: 10.1002/adhm.202200115] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/31/2022] [Indexed: 12/21/2022]
Abstract
Peripheral nerve regeneration and functional recovery is a major challenge in clinical practice. Nerve conduit is an effective treatment for peripheral nerve repair, but the traditional hollow nerve conduit is not satisfactory in peripheral nerve repair due to the limitation of cell migration and nutrient transport. Herein, the double cross-linked hydrogels with injectable, self-healing, and conductive properties are synthesized by the Schiff base reaction between polyaniline-modified carboxymethyl chitosan and aldehyde-modified Pluronic F-127 (F127-CHO), and the hydrophobic interaction of F127-CHO. The conductive hydrogel is injected into the cavity of chitosan conduit prepared by electrodeposition. The inner conductive hydrogel and the outer chitosan conduit are formed into a whole through the Schiff base reaction to obtain a double-layer composite hydrogel nerve conduit. The double-layer composite hydrogel neural conduit loaded with 7,8-dihydroxyflavone (DHF) has excellent degradability, biocompatibility, antioxidant activity, and Schwann cell proliferation activity. In the rat sciatic nerve defect model, the double-layer composite hydrogel nerve conduit significantly promotes sciatic nerve regeneration compared with the chitosan hollow conduit. Surprisingly, the repair ability of double-layered hydrogel nerve conduit loaded with DHF is comparable to that of autologous transplantation. Therefore, this multifunctional double-layer composite hydrogel conduit has great potential for peripheral nerve repairing.
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Affiliation(s)
- Pengpeng Deng
- Hubei Engineering Center of Natural Polymers‐based Medical Materials Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry Wuhan University Wuhan 430072 China
- Department of Biomedical Engineering Hubei Province Key Laboratory of Allergy and Immune Related Diseases School of Basic Medical Science Wuhan University Wuhan 430071 China
| | - Feixiang Chen
- Glyn O. Philips Hydrocolloid Research Centre at HUT Hubei University of Technology Wuhan 430068 China
| | - Haodong Zhang
- Hubei Engineering Center of Natural Polymers‐based Medical Materials Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry Wuhan University Wuhan 430072 China
| | - Yun Chen
- Glyn O. Philips Hydrocolloid Research Centre at HUT Hubei University of Technology Wuhan 430068 China
| | - Jinping Zhou
- Hubei Engineering Center of Natural Polymers‐based Medical Materials Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry Wuhan University Wuhan 430072 China
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Liu G, Ma M, Meng H, Liu J, Zheng Y, Peng J, Wei S, Sun Y, Wang Y, Xie Y, Li J. In-situ self-assembly of bacterial cellulose/poly(3,4-ethylenedioxythiophene)-sulfonated nanofibers for peripheral nerve repair. Carbohydr Polym 2022; 281:119044. [DOI: 10.1016/j.carbpol.2021.119044] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 12/19/2021] [Accepted: 12/22/2021] [Indexed: 12/21/2022]
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38
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Wang Q, Wang H, Ma Y, Cao X, Gao H. Effects of Electroactive materials on nerve cell behaviors and applications in peripheral nerve repair. Biomater Sci 2022; 10:6061-6076. [DOI: 10.1039/d2bm01216b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Peripheral nerve damage can lead to loss of function or even complete disability, which bring about a huge burden on both the patient and society. Regulating nerve cell behavior and...
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Tang X, Gu X, Huang T, Chen X, Zhou Z, Yang Y, Ling J. Anisotropic Silk-Inspired Nerve Conduit with Peptides Improved the Microenvironment for Long-Distance Peripheral Nerve Regeneration. ACS Macro Lett 2021; 10:1501-1509. [PMID: 35549152 DOI: 10.1021/acsmacrolett.1c00533] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A lack of effective bioactivity to create a desirable microenvironment for peripheral nerve regeneration has been challenging in successful treatment of long-distance injuries using nerve guidance conduits (NGCs) clinically. Herein, we developed a silk-inspired phototriggered gelation system combining dual therapeutic cues of anisotropic topography and adhesive ligands for improving peripheral nerve regeneration. Importantly, enhanced cell recruitment and myelination of Schwann cells were successfully achieved by the Arg-Gly-Asp (RGD)-peptide-immobilized hydrogel scaffolds to promote axon growth. Moreover, as the orientated growth of Schwann cells and rapid axon growth were facilitated by aligned grooved micropatterns, this multifunctional bioactive system provides remarkable nerve regeneration with function recovery for long-distance nerve injury. Therefore, this bioengineered silk-inspired nerve guidance conduit delivers a platform for desirable peripheral nerve repair.
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Affiliation(s)
- Xiaoxuan Tang
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong 226001, PR China
- Medical School of Nantong University, Nantong University, Nantong 226001, PR China
| | - Xinyi Gu
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong 226001, PR China
| | - Tingting Huang
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong 226001, PR China
| | - Xiaoli Chen
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong 226001, PR China
| | - Zhihao Zhou
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong 226001, PR China
| | - Yumin Yang
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong 226001, PR China
| | - Jue Ling
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong 226001, PR China
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40
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Shen J, Wang J, Liu X, Sun Y, Yin A, Chai Y, Zhang K, Wang C, Zheng X. In Situ Prevascularization Strategy with Three-Dimensional Porous Conduits for Neural Tissue Engineering. ACS APPLIED MATERIALS & INTERFACES 2021; 13:50785-50801. [PMID: 34664947 DOI: 10.1021/acsami.1c16138] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Neovascularization is crucial for peripheral nerve regeneration and long-term functional restoration. Previous studies have emphasized strategies that enhance axonal repair over vascularization. Here, we describe the development and application of an in situ prevascularization strategy that uses 3D porous nerve guidance conduits (NGCs) to achieve angiogenesis-mediated neural regeneration. The optimal porosity of the NGC is a critical feature for achieving neovascularization and nerve growth patency. Hollow silk fibroin/poly(l-lactic acid-co-ε-caprolactone) NGCs with 3D sponge-like walls were fabricated using electrospinning and freeze-drying. In vitro results showed that 3D porous NGC favored cell biocompatibility had neuroregeneration potential and, most importantly, had angiogenic activity. Results from our mechanistic studies suggest that activation of HIF-1α signaling might be associated with this process. We also tested in situ prevascularized 3D porous NGCs in vivo by transplanting them into a 10 mm rat sciatic nerve defect model with the aim of regenerating the severed nerve. The prevascularized 3D porous NGCs greatly enhanced intraneural angiogenesis, resulting in demonstrable neurogenesis. Eight weeks after transplantation, the performance of the prevascularized 3D NGCs was similar to that of traditional autografts in terms of improved anatomical structure, morphology, and neural function. In conclusion, combining a reasonably fabricated 3D-pore conduit structure with in situ prevascularization promoted functional nerve regeneration, suggesting an alternative strategy for achieving functional recovery after peripheral nerve trauma.
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Affiliation(s)
- Junjie Shen
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Yishan Road 600, Shanghai 200233, PR China
- Haikou Orthopedic and Diabetes Hospital of Shanghai Sixth People's Hospital, Hainan 570300, PR China
| | - Jiayan Wang
- College of Materials and Textile Engineering, Nanotechnology Research Institute, Jiaxing University, Zhejiang 314001, PR China
- Key Laboratory of Yarn Materials Forming and Composite Processing Technology, Zhejiang 314001, PR China
| | - Xuanzhe Liu
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Yishan Road 600, Shanghai 200233, PR China
| | - Yi Sun
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Yishan Road 600, Shanghai 200233, PR China
| | - Anlin Yin
- College of Materials and Textile Engineering, Nanotechnology Research Institute, Jiaxing University, Zhejiang 314001, PR China
- Key Laboratory of Yarn Materials Forming and Composite Processing Technology, Zhejiang 314001, PR China
| | - Yimin Chai
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Yishan Road 600, Shanghai 200233, PR China
| | - Kuihua Zhang
- College of Materials and Textile Engineering, Nanotechnology Research Institute, Jiaxing University, Zhejiang 314001, PR China
- Key Laboratory of Yarn Materials Forming and Composite Processing Technology, Zhejiang 314001, PR China
| | - Chunyang Wang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Yishan Road 600, Shanghai 200233, PR China
- Haikou Orthopedic and Diabetes Hospital of Shanghai Sixth People's Hospital, Hainan 570300, PR China
| | - Xianyou Zheng
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Yishan Road 600, Shanghai 200233, PR China
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41
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Wei Z, Hong FF, Cao Z, Zhao SY, Chen L. In Situ Fabrication of Nerve Growth Factor Encapsulated Chitosan Nanoparticles in Oxidized Bacterial Nanocellulose for Rat Sciatic Nerve Regeneration. Biomacromolecules 2021; 22:4988-4999. [PMID: 34724615 DOI: 10.1021/acs.biomac.1c00947] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Autograft is currently the gold standard in the clinical treatment of peripheral nerve injury (PNI), which, however, is limited by the availability of a donor nerve and secondary injuries. Nerve guidance conduits (NGC) provide a suitable microenvironment to promote the regeneration of injured nerves, which could be the substitutes for autografts. In this study, nerve growth factor (NGF) encapsulated chitosan nanoparticles (CSNPs) were first constructed in situ in an oxidized bacterial cellulose (OBC) conduit using the ion gel method after the introduction of a CS/NGF solution under pressure to enable a sustainable release of NGF. A novel NGF@CSNPs/OBC nanocomposite with antibacterial activity, biodegradability, and porous microstructure was successfully developed. In vitro experiments showed that the nanocomposite promoted the adhesion and proliferation of Schwann cells. When the nanocomposite was applied as NGC to repair the sciatic nerve defect of rats, a successful repair of the 10 mm nerve defect was observed after 4 weeks. At week 9, the diameter, morphology, histology, and functional recovery of the regenerated nerve was comparable to the autografts, indicating that the NGC effectively promoted the regeneration and function recovery of the nerve. In summary, the NGF@CSNPs/OBC as a novel NGC provides great potential in the treatment of PNI.
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Affiliation(s)
- Zhao Wei
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, No. 2999 North Ren Min Road, Shanghai, 201620, China.,Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai 201620, China
| | - Feng F Hong
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, No. 2999 North Ren Min Road, Shanghai, 201620, China.,Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai 201620, China.,Scientific Research Base of Bacterial Nanofiber Manufacturing and Composite Technology, China Textile Engineering Society, Shanghai, 201620, China
| | - Zhangjun Cao
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, No. 2999 North Ren Min Road, Shanghai, 201620, China.,Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai 201620, China
| | - Sheng-Yin Zhao
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, No. 2999 North Ren Min Road, Shanghai, 201620, China
| | - Lin Chen
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, No. 2999 North Ren Min Road, Shanghai, 201620, China.,Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai 201620, China
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42
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Wang Y, Liang R, Lin J, Chen J, Zhang Q, Li J, Wang M, Hui X, Tan H, Fu Q. Biodegradable polyurethane nerve guide conduits with different moduli influence axon regeneration in transected peripheral nerve injury. J Mater Chem B 2021; 9:7979-7990. [PMID: 34612287 DOI: 10.1039/d1tb01236c] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Nerve guide conduits (NGCs) can replace autogenous nerve grafting in the treatment of peripheral nerve system (PNS) injury. However, the modulus of polyurethane NGCs that affects the outcome of PNS repair has been rarely elucidated in vivo. In this study, we developed biodegradable waterborne polyurethane (BWPU) NGCs with an outer BWPU membrane and an inner three-dimensional scaffold structure. The mechanical properties of BWPU NGCs can be modified by adjusting the molar content of polyethylene glycol (PEG) in the soft segments within the BWPU. Two types of BWPU NGCs with different moduli were prepared, containing 17% and 25% PEG in BWPU (termed as BWPU 17 NGCs and BWPU 25 NGCs, respectively). In rat sciatic nerves with 10-mm transected injury, mechanically stronger BWPU 17 NGCs exhibited superior nerve repair, which was similar to that obtained by the current gold standard autograft implantation, whereas weaker BWPU 25 NGCs displayed an unsatisfactory effect. Histological results revealed that both BWPU NGCs had anti-inflammatory effects and altered the activation state of macrophages to M2 phenotypes to enhance PNS regeneration. The analysis of growth-associated protein 43 expression, which regulates axon growth, revealed that the mechanical properties of BWPU NGCs influence the outcome of PNS regeneration by affecting the formation and extension of axons. These findings suggest that the mechanical properties of NGCs could play a key role in regulating PNS repair and should be considered in future biomaterial NGC designs.
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Affiliation(s)
- Yanchao Wang
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, 610000, China.
| | - Ruichao Liang
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, 610000, China.
| | - Jingjing Lin
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X center of materials, Sichuan University, Chengdu, Sichuan, 610065, China.
| | - Jinlin Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X center of materials, Sichuan University, Chengdu, Sichuan, 610065, China.
| | - Qiao Zhang
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, 610000, China.
| | - Jiehua Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X center of materials, Sichuan University, Chengdu, Sichuan, 610065, China.
| | - Minjin Wang
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China.
| | - Xuhui Hui
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, 610000, China.
| | - Hong Tan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X center of materials, Sichuan University, Chengdu, Sichuan, 610065, China.
| | - Qiang Fu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X center of materials, Sichuan University, Chengdu, Sichuan, 610065, China.
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43
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Lu Q, Zhang F, Cheng W, Gao X, Ding Z, Zhang X, Lu Q, Kaplan DL. Nerve Guidance Conduits with Hierarchical Anisotropic Architecture for Peripheral Nerve Regeneration. Adv Healthc Mater 2021; 10:e2100427. [PMID: 34038626 PMCID: PMC8295195 DOI: 10.1002/adhm.202100427] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 04/15/2021] [Indexed: 12/24/2022]
Abstract
Nerve guidance conduits with multifunctional features could offer microenvironments for improved nerve regeneration and functional recovery. However, the challenge remains to optimize multiple cues in nerve conduit systems due to the interplay of these factors during fabrication. Here, a modular assembly for the fabrication of nerve conduits is utilized to address the goal of incorporating multifunctional guidance cues for nerve regeneration. Silk-based hollow conduits with suitable size and mechanical properties, along with silk nanofiber fillers with tunable hierarchical anisotropic architectures and microporous structures, are developed and assembled into conduits. These conduits supported improves nerve regeneration in terms of cell proliferation (Schwann and PC12 cells) and growth factor secretion (BDNF, brain-derived neurotrophic factor) in vitro, and the in vivo repair and functional recovery of rat sciatic nerve defects. Nerve regeneration using these new conduit designs is comparable to autografts, providing a path towards future clinical impact.
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Affiliation(s)
- Qingqing Lu
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
- School of Biology and Basic Medical Sciences, Soochow University, Suzhou, 215123, P. R. China
| | - Feng Zhang
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
- School of Biology and Basic Medical Sciences, Soochow University, Suzhou, 215123, P. R. China
| | - Weinan Cheng
- Department of Orthopedics, The First Affiliated Hospital of Xiamen University, Xiamen, 361000, P. R. China
| | - Xiang Gao
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - Zhaozhao Ding
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - Xiaoyi Zhang
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - Qiang Lu
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
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Markov A, Wördenweber R, Ichkitidze L, Gerasimenko A, Kurilova U, Suetina I, Mezentseva M, Offenhäusser A, Telyshev D. Biocompatible SWCNT Conductive Composites for Biomedical Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2492. [PMID: 33322503 PMCID: PMC7763503 DOI: 10.3390/nano10122492] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/27/2020] [Accepted: 12/09/2020] [Indexed: 02/03/2023]
Abstract
The efficiency of devices for biomedical applications, including tissue engineering and neuronal stimulation, heavily depends on their biocompatibility and performance level. Therefore, it is important to find adequate materials that meet the necessary requirements such as (i) being intrinsically compatible with biological systems, (ii) providing a sufficient electronic conductivity that promotes efficient signal transduction, (iii) having "soft" mechanical properties comparable to biological structures, and (iv) being degradable in physiological solution. We have developed organic conducting biocompatible single-walled carbon nanotubes (SWCNT) composites based on bovine serum albumin, carboxymethylcellulose, and acrylic polymer and investigated their properties, which are relevant for biomedical applications. This includes ζ-potential measurements, conductivity analyses, and SEM micrographs, the latter providing a local analysis of SWCNT distribution in the base material. We observed the development of the electrical conductivity of the SWCNT composites exposed to 1 mM KCl electrolyte for 40 days, representing a high stability of the samples. The conductivity of samples reaches 1300 S/m for 0.45 wt.% nanotubes. Moreover, we demonstrated the biocompatibility of the composites via cultivating fibroblast cell culture. Finally, we showed that composite coating results in the longer lifespan of cells on the surface. Overall, the SWCNT-based conductive composites might be a promising material for extended biomedical applications.
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Affiliation(s)
- Aleksandr Markov
- Institute for Bionic Technologies and Engineering, I. M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (L.I.); (A.G.); (D.T.)
| | - Roger Wördenweber
- Institute of Biological Information Processing, Bioelectronics (IBI-3), Research Center Jülich, 52425 Jülich, Germany; (R.W.); (A.O.)
| | - Levan Ichkitidze
- Institute for Bionic Technologies and Engineering, I. M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (L.I.); (A.G.); (D.T.)
- Institute of Biomedical Systems, National Research University of Electronic Technology, Zelenograd, 124498 Moscow, Russia;
| | - Alexander Gerasimenko
- Institute for Bionic Technologies and Engineering, I. M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (L.I.); (A.G.); (D.T.)
- Institute of Biomedical Systems, National Research University of Electronic Technology, Zelenograd, 124498 Moscow, Russia;
| | - Ulyana Kurilova
- Institute of Biomedical Systems, National Research University of Electronic Technology, Zelenograd, 124498 Moscow, Russia;
| | - Irina Suetina
- Ivanovsky Institute of Virology, N. F. Gamaleya National Center of Epidemiology and Microbiology, 123098 Moscow, Russia; (I.S.); (M.M.)
| | - Marina Mezentseva
- Ivanovsky Institute of Virology, N. F. Gamaleya National Center of Epidemiology and Microbiology, 123098 Moscow, Russia; (I.S.); (M.M.)
| | - Andreas Offenhäusser
- Institute of Biological Information Processing, Bioelectronics (IBI-3), Research Center Jülich, 52425 Jülich, Germany; (R.W.); (A.O.)
| | - Dmitry Telyshev
- Institute for Bionic Technologies and Engineering, I. M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (L.I.); (A.G.); (D.T.)
- Institute of Biomedical Systems, National Research University of Electronic Technology, Zelenograd, 124498 Moscow, Russia;
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Abstract
Sericin is a 10-to-400 kDa hydrophilic protein with high serine content and is a silk constituent together with fibroin. It is produced in the middle silk gland of the silkworm and encoded by four sericin genes. The molecular weight of sericin and its biological activity vary depending on the extraction method employed. Its chemical structure, in terms of random coil and β-sheet conformations, also differs with the extraction method, thereby extending its applications in various fields. Sericin, which was discarded in the textile industry in the past, is being applied and developed in the biomedical field, owing to its biological properties. In particular, many studies are underway in the field of tissue engineering, evaluating its applicability in burn dressing, drug delivery, bone regeneration, cartilage regeneration, and nerve regeneration.
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