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Sun Y, Shi M, Niu B, Xu X, Xia W, Deng C. Mg-Sr-Ca containing bioactive glass nanoparticles hydrogel modified mineralized collagen scaffold for bone repair. J Biomater Appl 2024; 39:117-128. [PMID: 38775351 DOI: 10.1177/08853282241254741] [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: 06/23/2024]
Abstract
The aim of this study is to explore the therapeutic effects of Mg-Sr-Ca containing bioactive glass nanoparticles sodium alginate hydrogel modified mineralized collagen scaffold (Mg-Sr-Ca-BGNs-SA-MC) on the repair of osteoporotic bone defect. During the study, Mg-Sr-Ca containing bioactive glass nanoparticles (Mg-Sr-Ca-BGNs) were synthesized using the sol-gel method, and the Mg-Sr-Ca-BGNs-SA-MC scaffold was synthesized by a simple method. The Mg-Sr-Ca-BGNs and the Mg-Sr-Ca-BGNs-SA-MC scaffold were observed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The elements of Mg, Sr, Ca and Si were effectively integrated into Mg-Sr-Ca-BGNs. SEM analysis revealed the presence of Mg-Sr-Ca-BGNs on the scaffold's surface. Furthermore, the cytotoxicity of the scaffolds were assessed using a live/dead assay. The result of the live/dead assay demonstrated that the scaffold materials were non-toxic to cell growth. More importantly, the in vivo study indicated that implanted scaffold promoted tissue regeneration and integration with newly formed bone. Overall, the Mg-Sr-Ca-BGNs-SA-MC scaffold is suitable for guided bone regeneration and beneficial to repair of osteoporotic bone defects.
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Affiliation(s)
- Yi Sun
- Anhui Provincial Engineering Research Center for Dental Materials and Application, Wannan Medical College, Wuhu, China
- School of Stomatology, Wannan Medical College, Wuhu, China
| | - Min Shi
- Anhui Provincial Engineering Research Center for Dental Materials and Application, Wannan Medical College, Wuhu, China
- School of Stomatology, Wannan Medical College, Wuhu, China
| | - Bowen Niu
- Anhui Provincial Engineering Research Center for Dental Materials and Application, Wannan Medical College, Wuhu, China
- School of Stomatology, Wannan Medical College, Wuhu, China
| | - Xiangyang Xu
- Anhui Provincial Engineering Research Center for Dental Materials and Application, Wannan Medical College, Wuhu, China
- School of Stomatology, Wannan Medical College, Wuhu, China
| | - Wen Xia
- Anhui Provincial Engineering Research Center for Dental Materials and Application, Wannan Medical College, Wuhu, China
- School of Stomatology, Wannan Medical College, Wuhu, China
| | - Chao Deng
- Anhui Provincial Engineering Research Center for Dental Materials and Application, Wannan Medical College, Wuhu, China
- School of Stomatology, Wannan Medical College, Wuhu, China
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2
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Zhu X, Wu S, Yang K, Wei W, Aziz Y, Yuan W, Miyatake H, Ito Y, Wei Z, Li J, Chen Y. Polydopamine-modified konjac glucomannan scaffold with sustained release of vascular endothelial growth factor to promote angiogenesis. Int J Biol Macromol 2024; 271:132333. [PMID: 38754686 DOI: 10.1016/j.ijbiomac.2024.132333] [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: 11/17/2023] [Revised: 04/24/2024] [Accepted: 05/10/2024] [Indexed: 05/18/2024]
Abstract
The fabrication of scaffolds capable of the sustained release of the vascular endothelial growth factor (VEGF) to promote angiogenesis for a long time remains a challenge in tissue engineering. Here, we report a facile approach for effectively fabricating a bioactive scaffold that gradually releases VEGF to promote angiogenesis. The scaffold was fabricated by coating polydopamine (PDA) on a konjac glucomannan (KGM) scaffold, followed by the surface immobilization of VEGF with PDA. The resulting VEGF-PDA/KGM scaffold, with a porous and interconnected microstructure (392 μm pore size with 84.80 porosity), combined the features of long-term biodegradability (10 weeks with 51 % degradation rate), excellent biocompatibility, and sustained VEGF release for up to 21 days. The bioactive VEGF-PDA/KGM scaffold exhibited multiple angiogenic activities over time, as confirmed by in vivo and in vitro experiments. For example, the scaffold significantly promoted the attachment and proliferation of human umbilical vein endothelial cells and the formation of vascular tubes in vitro. Moreover, the in vivo results demonstrated the formation and maturation of blood vessels after subcutaneous implantation in rats for four weeks. This promising strategy is a feasible approach for producing bioactive materials that can induce angiogenesis in vivo. These findings provide a new avenue for designing and fabricating biocompatible and long-term biodegradable scaffolds for sustained VEGF release to facilitate angiogenesis.
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Affiliation(s)
- Xulong Zhu
- Department of Surgical Oncology, Shaanxi Provincial People's Hospital, Xi'an, 710068, China; School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Shuhan Wu
- Department of Surgical Oncology, Shaanxi Provincial People's Hospital, Xi'an, 710068, China
| | - Kuan Yang
- College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, China
| | - Wei Wei
- College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, China
| | - Yasir Aziz
- College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, China
| | - Wenjin Yuan
- College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, China
| | - Hideyuki Miyatake
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, Emergent Bioengineering Materials Research Team, RIKEN Center for emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 3510198, Japan
| | - Yoshihiro Ito
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, Emergent Bioengineering Materials Research Team, RIKEN Center for emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 3510198, Japan
| | - Zhao Wei
- School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jianhui Li
- Department of Surgical Oncology, Shaanxi Provincial People's Hospital, Xi'an, 710068, China.
| | - Yongmei Chen
- College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, China.
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Finze R, Laubach M, Russo Serafini M, Kneser U, Medeiros Savi F. Histological and Immunohistochemical Characterization of Osteoimmunological Processes in Scaffold-Guided Bone Regeneration in an Ovine Large Segmental Defect Model. Biomedicines 2023; 11:2781. [PMID: 37893154 PMCID: PMC10604530 DOI: 10.3390/biomedicines11102781] [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: 08/21/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
Large-volume bone defect regeneration is complex and demands time to complete. Several regeneration phases with unique characteristics, including immune responses, follow, overlap, and interdepend on each other and, if successful, lead to the regeneration of the organ bone's form and function. However, during traumatic, infectious, or neoplastic clinical cases, the intrinsic bone regeneration capacity may exceed, and surgical intervention is indicated. Scaffold-guided bone regeneration (SGBR) has recently shown efficacy in preclinical and clinical studies. To investigate different SGBR strategies over periods of up to three years, we have established a well-characterized ovine large segmental tibial bone defect model, for which we have developed and optimized immunohistochemistry (IHC) protocols. We present an overview of the immunohistochemical characterization of different experimental groups, in which all ovine segmental defects were treated with a bone grafting technique combined with an additively manufactured medical-grade polycaprolactone/tricalcium phosphate (mPCL-TCP) scaffold. The qualitative dataset was based on osteoimmunological findings gained from IHC analyses of over 350 sheep surgeries over the past two decades. Our systematic and standardized IHC protocols enabled us to gain further insight into the complex and long-drawn-out bone regeneration processes, which ultimately proved to be a critical element for successful translational research.
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Affiliation(s)
- Ronja Finze
- Centre for Biomedical Technologies, School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4059, Australia; (R.F.)
- Department of Hand-, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, 67071 Ludwigshafen, Germany;
| | - Markus Laubach
- Centre for Biomedical Technologies, School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4059, Australia; (R.F.)
- Australian Research Council (ARC) Training Centre for Multiscale 3D Imaging, Modelling and Manufacturing (M3D Innovation), Queensland University of Technology, Brisbane, QLD 4000, Australia
- Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), LMU University Hospital, LMU Munich, 81377 Munich, Germany
| | - Mairim Russo Serafini
- Department of Pharmacy, Universidade Federal de Sergipe, Sao Cristovao 49100-000, Brazil;
| | - Ulrich Kneser
- Department of Hand-, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, 67071 Ludwigshafen, Germany;
| | - Flavia Medeiros Savi
- Centre for Biomedical Technologies, School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4059, Australia; (R.F.)
- Australian Research Council (ARC) Training Centre for Multiscale 3D Imaging, Modelling and Manufacturing (M3D Innovation), Queensland University of Technology, Brisbane, QLD 4000, Australia
- Max Planck Queensland Center for the Materials Science of Extracellular Matrices, Queensland University of Technology, Brisbane, QLD 4059, Australia
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4
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Teimoori M, Nokhbatolfoghahaei H, Khojasteh A. Bilayer scaffolds/membranes for bone tissue engineering applications: A systematic review. BIOMATERIALS ADVANCES 2023; 153:213528. [PMID: 37352742 DOI: 10.1016/j.bioadv.2023.213528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 06/25/2023]
Abstract
OBJECTIVE This systematic review evaluates the purpose, materials, physio-mechanical, and biological effects of bilayer scaffolds/membranes used for bone tissue engineering applications. METHODS A comprehensive electronic search of English-language literature from 2012 to October 2022 was conducted in PubMed, Scopus, ScienceDirect, and Google Scholar online databases according to the PRISMA 2020 guidelines. The quality of animal studies was evaluated through the SYRCLE's risk of bias tool. RESULTS A total of 77 studies were sought for retrieval, and 39 studies met the inclusion criteria. According to the synthesis results, most bilayers had a dense barrier layer that prevented connective tissue penetration and a loose osteogenic layer that supported cell migration and osteogenesis. PLGA, PCL, and chitosan were the most common polymers in the barrier layers, while the most utilized polymers in osteogenic layers were PLGA and gelatin. Electrospinning and solvent casting were the most common fabrication methods to design the bilayer structures. Many studies reported higher biological results for bilayers compared to their single layers. Also, fabricated bilayers' in vitro osteogenesis and in vivo new bone formation were significantly superior or at least comparable to the frequently used commercial membranes. CONCLUSION 1) Bilayers with two distinct layers and different materials, porosities, mechanical properties, and biological behavior can significantly improve heterogeneous bone regeneration; 2) the addition of ceramics and/or drugs to the osteogenic layer enhances the osteogenic properties of the bilayers; 3) fabrication method and pore size of the layers play an important role in determining the mechanical and biological behavior of them.
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Affiliation(s)
- Mahdis Teimoori
- Student Research Committee, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hanieh Nokhbatolfoghahaei
- Dental Research Center, Research Institute of Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arash Khojasteh
- Dental Research Center, Research Institute of Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Cranio-Maxillofacial Surgery, University Hospital, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.
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5
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Jin L, Shan J, Hao Y, Wang Y, Liu L. Enhanced bone regeneration by low-intensity pulsed ultrasound and lipid microbubbles on PLGA/TCP 3D-printed scaffolds. BMC Biotechnol 2023; 23:13. [PMID: 37280578 DOI: 10.1186/s12896-023-00783-9] [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: 12/03/2022] [Accepted: 05/23/2023] [Indexed: 06/08/2023] Open
Abstract
BACKGROUND To investigate the effect of low-intensity pulsed ultrasound (LIPUS) combined with lipid microbubbles on the proliferation and bone regeneration of bone marrow mesenchymal stem cells (BMSCs) in poly (lactic-glycolic acid copolymer) (PLGA)/α-tricalcium phosphate (TCP) 3D-printed scaffolds. METHODS BMSCs were irradiated with different LIPUS parameters and microbubble concentrations, and the best acoustic excitation parameters were selected. The expression of type I collagen and the activity of alkaline phosphatase were detected. Alizarin red staining was used to evaluate the calcium salt production during osteogenic differentiation. RESULTS BMSCs proliferation was the most significant under the condition of 0.5% (v/v) lipid microbubble concentration, 2.0 MHz frequency, 0.3 W/cm2 sound intensity and 20% duty cycle. After 14 days, the type I collagen expression and alkaline phosphatase activity in the scaffold increased significantly compared to those in the control group, and alizarin red staining showed more calcium salt production during osteogenic differentiation. After 21 days, scanning electron microscopy experiments showed that osteogenesis was obvious in the PLGA/TCP scaffolds. CONCLUSION LIPUS combined with lipid microbubbles on PLGA/TCP scaffolds can promote BMSCs growth and bone differentiation, which is expected to provide a new and effective method for the treatment of bone regeneration in tissue engineering.
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Affiliation(s)
- Lin Jin
- Department of Ultrasound, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, 201800, China
- Department of Ultrasound, Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200052, China
| | - Jiali Shan
- Department of Ultrasound, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, 201800, China
| | - Yanhong Hao
- Department of Ultrasound, First Hospital of Shanxi Medical University, No. 85, Jiefang South Road, Taiyuan, 030001, Shanxi, China
| | - Yingchun Wang
- Department of Ultrasound, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, 201800, China
| | - Liping Liu
- Department of Ultrasound, First Hospital of Shanxi Medical University, No. 85, Jiefang South Road, Taiyuan, 030001, Shanxi, China.
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6
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Avanzi IR, Parisi JR, Souza A, Cruz MA, Martignago CCS, Ribeiro DA, Braga ARC, Renno AC. 3D-printed hydroxyapatite scaffolds for bone tissue engineering: A systematic review in experimental animal studies. J Biomed Mater Res B Appl Biomater 2023; 111:203-219. [PMID: 35906778 DOI: 10.1002/jbm.b.35134] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 06/14/2022] [Accepted: 07/05/2022] [Indexed: 11/10/2022]
Abstract
The use of 3D-printed hydroxyapatite (HA) scaffolds for stimulating bone healing has been increasing over the years. Although all the promising effects of these scaffolds, there are still few studies and limited understanding of their interaction with bone tissue and their effects on the process of fracture healing. In this context, this study aimed to perform a systematic literature review examining the effects of different 3D-printed HA scaffolds in bone healing. The search was made according to the preferred reporting items for systematic reviews and meta-analysis (PRISMA) orientations and Medical Subject Headings (MeSH) descriptors "3D printing," "bone," "HA," "repair," and "in vivo." Thirty-six articles were retrieved from PubMed and Scopus databases. After eligibility analyses, 20 papers were included (covering the period of 2016 and 2021). Results demonstrated that all the studies included in this review showed positive outcomes, indicating the efficacy of scaffolds treated groups in the in vivo experiments for promoting bone healing in different animal models. In conclusion, 3D-printed HA scaffolds are excellent candidates as bone grafts due to their bioactivity and good bone interaction.
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Affiliation(s)
- Ingrid Regina Avanzi
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil.,São Paulo State Faculty of Technology (FATEC), Santos, Brazil
| | | | - Amanda Souza
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil
| | - Matheus Almeida Cruz
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil
| | | | - Daniel Araki Ribeiro
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil
| | - Anna Rafaela Cavalcante Braga
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil.,Department of Chemical Engineering, Federal University of São Paulo (UNIFESP), Diadema, Brazil
| | - Ana Claudia Renno
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil
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7
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Zhao Y, Chen H, Ran K, Zhang Y, Pan H, Shangguan J, Tong M, Yang J, Yao Q, Xu H. Porous hydroxyapatite scaffold orchestrated with bioactive coatings for rapid bone repair. BIOMATERIALS ADVANCES 2022; 144:213202. [PMID: 36434928 DOI: 10.1016/j.bioadv.2022.213202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/09/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022]
Abstract
Current bioceramic scaffolds for critical-size bone defects are still facing various challenges such as the poor capability of self-resorption, vascularization and osteogenesis. Herein, a composite scaffold (HOD) is fabricated by integrating bioactive coatings of konjac glucomannan (KGM) and deferoxamine (DFO) into porous hydroxyapatite scaffold (HA), where KGM coating induces the self-resorption of HOD after implanting and DFO promoted the vascularization at the defected bone. Porous HA scaffolds with 200-400 μm of pore sizes were prepared and these bioactive coatings were successfully deposited on the scaffold, which was confirmed by SEM. MC3T3-E1 cells could be tightly attached to the pore wall of HOD and the obvious osteogenic differentiation was clearly displayed after 14 days of co-culture. Besides, HOD displayed the potential of promoting the vascularization of HUVECs. Importantly, the accelerated degradation of HOD was observed in a macrophage-associated acidic medium, which led to the self-resorption of HOD in vivo. Micro-CT images showed that HOD was gradually replaced by newly formed bone, achieving a balance between the new bone formation and the scaffold degradation. The rapid bone repairing of the femoral defects in rats was displayed for HOD in comparison to the HA scaffold. Moreover, the therapeutic mechanism of HOD was highly associated with promoted osteogenesis and vascularization. Collectively, the porous ceramic scaffold orchestrated with bioactive coatings may be a promising strategy for repairing of the large bone defect.
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Affiliation(s)
- Yingzheng Zhao
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China.
| | - Hangbo Chen
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Kunjie Ran
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Yingying Zhang
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Hanxiao Pan
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Jianxun Shangguan
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Mengqi Tong
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Jiaojiao Yang
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Qing Yao
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China
| | - Helin Xu
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China.
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8
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Wu H, Wei X, Liu Y, Dong H, Tang Z, Wang N, Bao S, Wu Z, Shi L, Zheng X, Li X, Guo Z. Dynamic degradation patterns of porous polycaprolactone/β-tricalcium phosphate composites orchestrate macrophage responses and immunoregulatory bone regeneration. Bioact Mater 2022; 21:595-611. [PMID: 36685731 PMCID: PMC9832114 DOI: 10.1016/j.bioactmat.2022.07.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/17/2022] [Accepted: 07/24/2022] [Indexed: 01/25/2023] Open
Abstract
Biodegradable polycaprolactone/β-tricalcium phosphate (PT) composites are desirable candidates for bone tissue engineering applications. A higher β-tricalcium phosphate (TCP) ceramic content improves the mechanical, hydrophilic and osteogenic properties of PT scaffolds in vitro. Using a dynamic degradation reactor, we established a steady in vitro degradation model to investigate the changes in the physio-chemical and biological properties of PT scaffolds during degradation.PT46 and PT37 scaffolds underwent degradation more rapidly than PT scaffolds with lower TCP contents. In vivo studies revealed the rapid degradation of PT (PT46 and PT37) scaffolds disturbed macrophage responses and lead to bone healing failure. Macrophage co-culture assays and a subcutaneous implantation model indicated that the scaffold degradation process dynamically affected macrophage responses, especially polarization. RNA-Seq analysis indicated phagocytosis of the degradation products of PT37 scaffolds induces oxidative stress and inflammatory M1 polarization in macrophages. Overall, this study reveals that the dynamic patterns of biodegradation of degradable bone scaffolds highly orchestrate immune responses and thus determine the success of bone regeneration. Therefore, through evaluation of the biological effects of biomaterials during the entire process of degradation on immune responses and bone regeneration are necessary in order to develop more promising biomaterials for bone regeneration.
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Affiliation(s)
- Hao Wu
- Department of Orthopaedics, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710038, PR China
| | - Xinghui Wei
- Department of Orthopaedics, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710038, PR China
| | - Yichao Liu
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Hui Dong
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Zhen Tang
- Department of Orthopaedics, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710038, PR China
| | - Ning Wang
- Department of Orthopaedics, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710038, PR China
| | - Shusen Bao
- Department of Orthopaedics, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710038, PR China
| | - Zhigang Wu
- Department of Orthopaedics, The 63750 Hospital of People's Liberation Army, Xi'an, Shaanxi, 710038, PR China
| | - Lei Shi
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Xiongfei Zheng
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, Liaoning, 110000, PR China
| | - Xiaokang Li
- Department of Orthopaedics, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710038, PR China,Corresponding author.
| | - Zheng Guo
- Department of Orthopaedics, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710038, PR China,Corresponding author.
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9
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Liu T, Li Z, Zhao L, Chen Z, Lin Z, Li B, Feng Z, Jin P, Zhang J, Wu Z, Wu H, Xu X, Ye X, Zhang Y. Customized Design 3D Printed PLGA/Calcium Sulfate Scaffold Enhances Mechanical and Biological Properties for Bone Regeneration. Front Bioeng Biotechnol 2022; 10:874931. [PMID: 35814012 PMCID: PMC9260230 DOI: 10.3389/fbioe.2022.874931] [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: 02/13/2022] [Accepted: 05/11/2022] [Indexed: 11/29/2022] Open
Abstract
Polylactic glycolic acid copolymer (PLGA) has been widely used in tissue engineering due to its good biocompatibility and degradation properties. However, the mismatched mechanical and unsatisfactory biological properties of PLGA limit further application in bone tissue engineering. Calcium sulfate (CaSO4) is one of the most promising bone repair materials due to its non-immunogenicity, well biocompatibility, and excellent bone conductivity. In this study, aiming at the shortcomings of activity-lack and low mechanical of PLGA in bone tissue engineering, customized-designed 3D porous PLGA/CaSO4 scaffolds were prepared by 3D printing. We first studied the physical properties of PLGA/CaSO4 scaffolds and the results showed that CaSO4 improved the mechanical properties of PLGA scaffolds. In vitro experiments showed that PLGA/CaSO4 scaffold exhibited good biocompatibility. Moreover, the addition of CaSO4 could significantly improve the migration and osteogenic differentiation of MC3T3-E1 cells in the PLGA/CaSO4 scaffolds, and the PLGA/CaSO4 scaffolds made with 20 wt.% CaSO4 exhibited the best osteogenesis properties. Therefore, calcium sulfate was added to PLGA could lead to customized 3D printed scaffolds for enhanced mechanical properties and biological properties. The customized 3D-printed PLGA/CaSO4 scaffold shows great potential for precisely repairing irregular load-bearing bone defects.
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Affiliation(s)
- Tao Liu
- General Hospital of Southern Theatre Command of PLA, The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Zhan Li
- General Hospital of Southern Theatre Command of PLA, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Li Zhao
- Department of Trauma Orthopedics, Hospital of Orthopedics, General Hospital of Southern Theatre Command of PLA, Guangzhou, China
| | - Zehua Chen
- The Fifth Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zefeng Lin
- Guangdong Key Lab of Orthopedic Technology and Implant Materials, General Hospital of Southern Theatre Command of PLA, Guangzhou, China
| | - Binglin Li
- Department of Trauma Orthopedics, Hospital of Orthopedics, General Hospital of Southern Theatre Command of PLA, Guangzhou, China
- Guangdong Key Lab of Orthopedic Technology and Implant Materials, General Hospital of Southern Theatre Command of PLA, Guangzhou, China
| | - Zhibin Feng
- General Hospital of Southern Theatre Command of PLA, The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Panshi Jin
- General Hospital of Southern Theatre Command of PLA, The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Jinwei Zhang
- General Hospital of Southern Theatre Command of PLA, The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Zugui Wu
- The Fifth Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Huai Wu
- Department of Orthopedics, Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, China
| | - Xuemeng Xu
- Department of Orthopedics, Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, China
- *Correspondence: Xuemeng Xu, ; Xiangling Ye, ; Ying Zhang,
| | - Xiangling Ye
- The Fifth Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
- *Correspondence: Xuemeng Xu, ; Xiangling Ye, ; Ying Zhang,
| | - Ying Zhang
- General Hospital of Southern Theatre Command of PLA, The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Trauma Orthopedics, Hospital of Orthopedics, General Hospital of Southern Theatre Command of PLA, Guangzhou, China
- *Correspondence: Xuemeng Xu, ; Xiangling Ye, ; Ying Zhang,
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10
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Xu D, Chen S, Xie C, Liang Q, Xiao X. Cryogenic 3D printing of modified polylactic acid scaffolds with biomimetic nanofibrous architecture for bone tissue engineering. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 33:532-549. [PMID: 34704534 DOI: 10.1080/09205063.2021.1997210] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The individualized polylactic acid (PLA) scaffolds fabricated by 3D printing technique have a good application prospect in the bone tissue engineering field. However, 3D printed PLA scaffold mainly manufactured by using a Fused Deposition Modelling fabrication technique (FDM) has some disadvantages, such as having smooth surface, strong hydrophobicity, poor cell adhesion, undesirable bioactivity, the degradation and deterioration at a high temperature triggering an inflammatory response. In this work, the aminated modified polylactic acid nanofibrous scaffold prepared by cryogenic 3D printing technology is designed to provide a feasible countermeasure to solve the key problems existing at present. The prepared scaffolds were fully characterized in terms of physico-chemical and morphological analyses, and the collected results revealed that the using of the cryogenic 3D printing technology can effectively avoid the degradation and deterioration of PLA at a high temperature required by FDM technique and promote the formation of nanofibrous structures. The in vitro tests with MC3T3-E1 cells confirmed that the cell-responsive biomimetic fibrous architecture and improved hydrophilicity due to the introduction of hydrophilic active amino groups provided a bioactive interface for cell adhesion and growth. Meanwhile, the active amino groups introduced by ammonolysis reaction can act as active sites for biomineralization. Thus, the as-prepared scaffolds may hold great potential for bone tissue engineering applications.
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Affiliation(s)
- Dian Xu
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
| | - Shunyu Chen
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
| | - Chunling Xie
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
| | - Qingshuang Liang
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
| | - Xiufeng Xiao
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
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