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Gao Y, Wang Y, Wu Y, Liu S. Biomaterials targeting the microenvironment for spinal cord injury repair: progression and perspectives. Front Cell Neurosci 2024; 18:1362494. [PMID: 38784712 PMCID: PMC11111957 DOI: 10.3389/fncel.2024.1362494] [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: 12/28/2023] [Accepted: 04/17/2024] [Indexed: 05/25/2024] Open
Abstract
Spinal cord injury (SCI) disrupts nerve pathways and affects sensory, motor, and autonomic function. There is currently no effective treatment for SCI. SCI occurs within three temporal periods: acute, subacute, and chronic. In each period there are different alterations in the cells, inflammatory factors, and signaling pathways within the spinal cord. Many biomaterials have been investigated in the treatment of SCI, including hydrogels and fiber scaffolds, and some progress has been made in the treatment of SCI using multiple materials. However, there are limitations when using individual biomaterials in SCI treatment, and these limitations can be significantly improved by combining treatments with stem cells. In order to better understand SCI and to investigate new strategies for its treatment, several combination therapies that include materials combined with cells, drugs, cytokines, etc. are summarized in the current review.
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Affiliation(s)
- Yating Gao
- Department of Neurosurgery, Tianyou Hospital, Wuhan University of Science and Technology, Wuhan, China
| | - Yu Wang
- Department of Neurosurgery, Tianyou Hospital, Wuhan University of Science and Technology, Wuhan, China
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yaqi Wu
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shengwen Liu
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Xie S, Guo M, Zeng D, Luo H, Zhong P, Deng Z, Wang Y, Xu Z, Zhang P. Silicon and gadolinium co-doped hydroxyapatite/PLGA scaffolds with osteoinductive and MRI dual functions. Front Bioeng Biotechnol 2024; 11:1310017. [PMID: 38268940 PMCID: PMC10807042 DOI: 10.3389/fbioe.2023.1310017] [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: 10/09/2023] [Accepted: 12/20/2023] [Indexed: 01/26/2024] Open
Abstract
Introduction: An ideal bone repair scaffold should have dual functions of osteoinductive ability and in vivo imaging. In this study, the simultaneous substitution of silicon (Si) and gadolinium (Gd) in hydroxyapatite (HA) as potential multifunctional bone graft materials has been successfully developed. Methods: A series of HA nanoparticles (HA NPs) doped with different proportions of Si and Gd were prepared. The chemical structure and phase composition of the materials were analyzed using Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD). The microstructure, magnetic properties, surface potential, and cytotoxicity of the materials were also analyzed. The magnetic resonance imaging (MRI) effect of Gd&Si-HA/poly(lactic-co-glycolic acid) (Gd&Si-HA/PLGA) composite materials was evaluated. Osteogenic-related gene expression, alkaline phosphatase (ALP) level, and mineralization capacity of MC3T3-E1 cultured on Gd&Si-HA/PLGA composite materials were also detected. Results and Discussion: The 1.5Gd&Si-HA@PLGA group showed good ability to promote osteogenic differentiation of cells. The MRI effect of the 1.5Gd&Si-HA@PLGA scaffold was observable. This HA material containing Si and Gd co-doping has a broad application prospect in the field of bone tissue engineering owing to its ability to enhance osteoinductive property and improve MRI effect.
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Affiliation(s)
- Shaodong Xie
- Department of Rehabilitation Medicine, Foshan Hospital of Traditional Chinese Medicine, Foshan, China
| | - Min Guo
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Deming Zeng
- Department of Rehabilitation Medicine, Foshan Hospital of Traditional Chinese Medicine, Foshan, China
| | - Hanwen Luo
- Department of Rehabilitation Medicine, Foshan Hospital of Traditional Chinese Medicine, Foshan, China
| | - Ping Zhong
- Department of Rehabilitation Medicine, Foshan Hospital of Traditional Chinese Medicine, Foshan, China
| | - Zixuan Deng
- Graduate Student of the Eighth Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yu Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Zhiqiang Xu
- Department of Rehabilitation Medicine, Foshan Hospital of Traditional Chinese Medicine, Foshan, China
| | - Peibiao Zhang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
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Sun W, Ye B, Chen S, Zeng L, Lu H, Wan Y, Gao Q, Chen K, Qu Y, Wu B, Lv X, Guo X. Neuro-bone tissue engineering: emerging mechanisms, potential strategies, and current challenges. Bone Res 2023; 11:65. [PMID: 38123549 PMCID: PMC10733346 DOI: 10.1038/s41413-023-00302-8] [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: 07/11/2023] [Revised: 10/08/2023] [Accepted: 10/31/2023] [Indexed: 12/23/2023] Open
Abstract
The skeleton is a highly innervated organ in which nerve fibers interact with various skeletal cells. Peripheral nerve endings release neurogenic factors and sense skeletal signals, which mediate bone metabolism and skeletal pain. In recent years, bone tissue engineering has increasingly focused on the effects of the nervous system on bone regeneration. Simultaneous regeneration of bone and nerves through the use of materials or by the enhancement of endogenous neurogenic repair signals has been proven to promote functional bone regeneration. Additionally, emerging information on the mechanisms of skeletal interoception and the central nervous system regulation of bone homeostasis provide an opportunity for advancing biomaterials. However, comprehensive reviews of this topic are lacking. Therefore, this review provides an overview of the relationship between nerves and bone regeneration, focusing on tissue engineering applications. We discuss novel regulatory mechanisms and explore innovative approaches based on nerve-bone interactions for bone regeneration. Finally, the challenges and future prospects of this field are briefly discussed.
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Affiliation(s)
- Wenzhe Sun
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Bing Ye
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Siyue Chen
- School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Lian Zeng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Hongwei Lu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Yizhou Wan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Qing Gao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Kaifang Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Yanzhen Qu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Bin Wu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Xiao Lv
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China.
| | - Xiaodong Guo
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China.
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Pérez-Davila S, Potel-Alvarellos C, Carballo R, González-Rodríguez L, López-Álvarez M, Serra J, Díaz-Rodríguez P, Landín M, González P. Vancomycin-Loaded 3D-Printed Polylactic Acid-Hydroxyapatite Scaffolds for Bone Tissue Engineering. Polymers (Basel) 2023; 15:4250. [PMID: 37959930 PMCID: PMC10648244 DOI: 10.3390/polym15214250] [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: 09/29/2023] [Revised: 10/23/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
The regeneration of bone remains one of the main challenges in the biomedical field, with the need to provide more personalized and multifunctional solutions. The other persistent challenge is related to the local prevention of infections after implantation surgery. To fulfill the first one and provide customized scaffolds with complex geometries, 3D printing is being investigated, with polylactic acid (PLA) as the biomaterial mostly used, given its thermoplastic properties. The 3D printing of PLA in combination with hydroxyapatite (HA) is also under research, to mimic the native mechanical and biological properties, providing more functional scaffolds. Finally, to fulfill the second one, antibacterial drugs locally incorporated into biodegradable scaffolds are also under investigation. This work aims to develop vancomycin-loaded 3D-printed PLA-HA scaffolds offering a dual functionality: local prevention of infections and personalized biodegradable scaffolds with osseointegrative properties. For this, the antibacterial drug vancomycin was incorporated into 3D-printed PLA-HA scaffolds using three loading methodologies: (1) dip coating, (2) drop coating, and (3) direct incorporation in the 3D printing with PLA and HA. A systematic characterization was performed, including release kinetics, Staphylococcus aureus antibacterial/antibiofilm activities and cytocompatibility. The results demonstrated the feasibility of the vancomycin-loaded 3D-printed PLA-HA scaffolds as drug-releasing vehicles with significant antibacterial effects for the three methodologies. In relation to the drug release kinetics, the (1) dip- and (2) drop-coating methodologies achieved burst release (first 60 min) of around 80-90% of the loaded vancomycin, followed by a slower release of the remaining drug for up to 48 h, while the (3) 3D printing presented an extended release beyond 7 days as the polymer degraded. The cytocompatibility of the vancomycin-loaded scaffolds was also confirmed.
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Affiliation(s)
- Sara Pérez-Davila
- CINTECX, Universidade de Vigo, Grupo Novos Materiais, 36310 Vigo, Spain (M.L.-Á.)
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36213 Vigo, Spain; (C.P.-A.)
| | - Carmen Potel-Alvarellos
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36213 Vigo, Spain; (C.P.-A.)
- Laboratorio de Microbiología, Complejo Hospitalario Universitario de Vigo, 36312 Vigo, Spain
| | - Raquel Carballo
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36213 Vigo, Spain; (C.P.-A.)
- Laboratorio de Microbiología, Complejo Hospitalario Universitario de Vigo, 36312 Vigo, Spain
| | - Laura González-Rodríguez
- CINTECX, Universidade de Vigo, Grupo Novos Materiais, 36310 Vigo, Spain (M.L.-Á.)
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36213 Vigo, Spain; (C.P.-A.)
| | - Miriam López-Álvarez
- CINTECX, Universidade de Vigo, Grupo Novos Materiais, 36310 Vigo, Spain (M.L.-Á.)
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36213 Vigo, Spain; (C.P.-A.)
| | - Julia Serra
- CINTECX, Universidade de Vigo, Grupo Novos Materiais, 36310 Vigo, Spain (M.L.-Á.)
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36213 Vigo, Spain; (C.P.-A.)
| | - Patricia Díaz-Rodríguez
- Pharmacology, Pharmacy, and Pharmaceutical Technology Department, I+D Farma (GI-1645), Faculty of Pharmacy, Institute of Materials, iMATUS and Health Research Institute of Santiago de Compositela (IDIS), University of Santiago de Compostela, 15705 Santiago de Compostela, Spain; (P.D.-R.); (M.L.)
| | - Mariana Landín
- Pharmacology, Pharmacy, and Pharmaceutical Technology Department, I+D Farma (GI-1645), Faculty of Pharmacy, Institute of Materials, iMATUS and Health Research Institute of Santiago de Compositela (IDIS), University of Santiago de Compostela, 15705 Santiago de Compostela, Spain; (P.D.-R.); (M.L.)
| | - Pío González
- CINTECX, Universidade de Vigo, Grupo Novos Materiais, 36310 Vigo, Spain (M.L.-Á.)
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36213 Vigo, Spain; (C.P.-A.)
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Liu H, Li P, Tang Z, Liu H, Zhang R, Ge J, Yang H, Ni X, Lin X, Yang L. Study on injectable silver-incorporated calcium phosphate composite with enhanced antibacterial and biomechanical properties for fighting bone cement-associated infections. Colloids Surf B Biointerfaces 2023; 227:113382. [PMID: 37290289 DOI: 10.1016/j.colsurfb.2023.113382] [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: 02/28/2023] [Revised: 04/28/2023] [Accepted: 05/26/2023] [Indexed: 06/10/2023]
Abstract
Although commonly used in orthopedic surgery, bone cements often face a high risk of post-operative infection. Developing bone cement with antibacterial capability is an effective path for eliminating implant-associated infections. Herein, the potential of silver ions (Ag+) and silver nanoparticles (AgNPs) in modifying CPC for long-term antibacterial property was investigated. Ag+ ions or AgNPs of various concentrations were incorporated in starch-modified calcium phosphate bone cement (CPB) to obtain Ag+-containing (Ag+@CPB) and AgNPs-containing (AgNP@CPB) bone cements. The results showed that all silver-containing CPBs had setting times of about 25-40 min, compressive strengths of greater than 22 MPa, high cytocompatibility but inhibitory effect on Staphylococcus aureus growth. After soaking for 1 week, the mechanical properties and the cytocompatibility of all cements revealed no significant changes, but only CPB with a relatively high content of Ag+ (H-Ag+@CPB) maintained good antibacterial capability over the tested time period. In addition, all the cements showed high injectability and interdigitating capability in cancellous bone and demonstrated augmentation effect on the cannulated pedicle screws fixation in the Sawbones model. In summary, the sustainable antibacterial capability and enhanced biomechanical properties demonstrated that Ag+ ions were more suitable for the fabrication of antibacterial CPC compared to AgNPs. Also, the H-Ag+@CPB, with good injectability, high cytocompatibility, good interdigitating and biomechanical property in cancellous bone, and sustainable antibacterial effects, bears great potential for the treatments of bone infections or implant-associated infections.
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Affiliation(s)
- Huiling Liu
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China
| | - Peng Li
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China
| | - Ziniu Tang
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China
| | - Haoran Liu
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China
| | - Rui Zhang
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China
| | - Jun Ge
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China
| | - Huilin Yang
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China
| | - Xinye Ni
- Second People's Hospital of Changzhou, Nanjing Medical University, Changzhou 213003, China.
| | - Xiao Lin
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China.
| | - Lei Yang
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China; Center for Health Sciences and Engineering (CHSE), Hebei Key Laboratory of Biomaterials and Smart Theranostics, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin 300131, China.
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Promotion of In Vitro Osteogenic Activity by Melt Extrusion-Based PLLA/PCL/PHBV Scaffolds Enriched with Nano-Hydroxyapatite and Strontium Substituted Nano-Hydroxyapatite. Polymers (Basel) 2023; 15:polym15041052. [PMID: 36850334 PMCID: PMC9964080 DOI: 10.3390/polym15041052] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/22/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
Bone tissue engineering has emerged as a promising strategy to overcome the limitations of current treatments for bone-related disorders, but the trade-off between mechanical properties and bioactivity remains a concern for many polymeric materials. To address this need, novel polymeric blends of poly-L-lactic acid (PLLA), polycaprolactone (PCL) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) have been explored. Blend filaments comprising PLLA/PCL/PHBV at a ratio of 90/5/5 wt% have been prepared using twin-screw extrusion. The PLLA/PCL/PHBV blends were enriched with nano-hydroxyapatite (nano-HA) and strontium-substituted nano-HA (Sr-nano-HA) to produce composite filaments. Three-dimensional scaffolds were printed by fused deposition modelling from PLLA/PCL/PHBV blend and composite filaments and evaluated mechanically and biologically for their capacity to support bone formation in vitro. The composite scaffolds had a mean porosity of 40%, mean pores of 800 µm, and an average compressive modulus of 32 MPa. Polymer blend and enriched scaffolds supported cell attachment and proliferation. The alkaline phosphatase activity and calcium production were significantly higher in composite scaffolds compared to the blends. These findings demonstrate that thermoplastic polyesters (PLLA and PCL) can be combined with polymers produced via a bacterial route (PHBV) to produce polymer blends with excellent biocompatibility, providing additional options for polymer blend optimization. The enrichment of the blend with nano-HA and Sr-nano-HA powders enhanced the osteogenic potential in vitro.
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