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Alqahtani AM. Guided Tissue and Bone Regeneration Membranes: A Review of Biomaterials and Techniques for Periodontal Treatments. Polymers (Basel) 2023; 15:3355. [PMID: 37631412 PMCID: PMC10457807 DOI: 10.3390/polym15163355] [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: 07/25/2023] [Revised: 08/05/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
This comprehensive review provides an in-depth analysis of the use of biomaterials in the processes of guided tissue and bone regeneration, and their indispensable role in dental therapeutic interventions. These interventions serve the critical function of restoring both structural integrity and functionality to the dentition that has been lost or damaged. The basis for this review is laid through the exploration of various relevant scientific databases such as Scopus, PubMed, Web of science and MEDLINE. From a meticulous selection, relevant literature was chosen. This review commences by examining the different types of membranes used in guided bone regeneration procedures and the spectrum of biomaterials employed in these operations. It then explores the manufacturing technologies for the scaffold, delving into their significant impact on tissue and bone regenerations. At the core of this review is the method of guided bone regeneration, which is a crucial technique for counteracting bone loss induced by tooth extraction or periodontal disease. The discussion advances by underscoring the latest innovations and strategies in the field of tissue regeneration. One key observation is the critical role that membranes play in guided reconstruction; they serve as a barrier, preventing the entry of non-ossifying cells, thereby promoting the successful growth and regeneration of bone and tissue. By reviewing the existing literature on biomaterials, membranes, and scaffold manufacturing technologies, this paper illustrates the vast potential for innovation and growth within the field of dental therapeutic interventions, particularly in guided tissue and bone regeneration.
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Affiliation(s)
- Ali M Alqahtani
- Department of Restorative Dental Sciences, College of Dentistry, King Khalid University, Al Fara, Abha 62223, Saudi Arabia
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Abbasnezhad S, Biazar E, Aavani F, Kamalvand M, Heidari Keshel S, Pourjabbar B. Chemical modification of acellular fish skin as a promising biological scaffold by carbodiimide cross‐linker for wound healing. Int Wound J 2022; 20:1566-1577. [PMID: 36372945 PMCID: PMC10088853 DOI: 10.1111/iwj.14012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/23/2022] [Accepted: 10/24/2022] [Indexed: 11/15/2022] Open
Abstract
Biological matrices can be modified with cross-linkers to improve some of their characteristics as scaffolds for tissue engineering. In this study, chemical cross-linker 1-Ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) was used with different ratios (5, 10, 20, 30, and 40 mM) to improve properties such as mechanical strength, denaturation temperature, and degradability of the acellular fish skin as a biological scaffold for tissue engineering applications. Morphological analysis showed that the use of cross-linker at low concentrations had no effect on the structure and textiles of the scaffold, while increasing mechanical strength, denaturation temperature, and degradation time. Cytotoxicity and cellular studies showed that the optimal cross-linker concentration did not significantly affect cell viability as well as cell adhesion. In general, utilising the carbodiimide cross-linker with the optimal ratio can improve the characteristics and function of the biological tissues such as acellular fish skin.
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Affiliation(s)
- Sara Abbasnezhad
- Tissue Engineering Group, Department of Biomedical Engineering, Tonekabon Branch Islamic Azad University Tonekabon Iran
| | - Esmaeil Biazar
- Tissue Engineering Group, Department of Biomedical Engineering, Tonekabon Branch Islamic Azad University Tonekabon Iran
| | - Farzaneh Aavani
- Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Hospital Hamburg‐Eppendorf Hamburg Germany
| | - Mahshad Kamalvand
- Tissue Engineering Group, Department of Biomedical Engineering, Tonekabon Branch Islamic Azad University Tonekabon Iran
| | - Saeed Heidari Keshel
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Bahareh Pourjabbar
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
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Liu W, Dong X, Qin H, Sui L, Wang J. Three-dimensional porous reduced graphene oxide/hydroxyapatite membrane for guided bone regeneration. Colloids Surf B Biointerfaces 2021; 208:112102. [PMID: 34509086 DOI: 10.1016/j.colsurfb.2021.112102] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/20/2021] [Accepted: 09/05/2021] [Indexed: 02/08/2023]
Abstract
The guided bone regeneration (GBR) membrane is intended to provide sufficient space for alveolar bone regeneration and meanwhile prevent the invasion of gingival epithelium. In this study, three-dimensional porous reduced graphene oxide/hydroxyapatite (3D rGO/HA) membrane with two different sides was prepared using a two-step electrochemical method. One side of this composite membrane facing the bone defect was formed by 3D porous rGO with HA deposited on the frame of the 3D structure, and the other side of the membrane presented a dense 2D rGO surface to prevent the invasion of the gingival epithelium. The morphology, phase composition, and physical properties of the 3D rGO/HA composite membrane were characterized. Then the cell morphology, viability, and proliferation of pre-osteoblasts (MC3T3-E1 cells) on the 3D porous structure surface of membranes were evaluated and alkaline phosphatase (ALP) secretion as an indication of osteogenic differentiation was also investigated. Meanwhile, cell morphology, viability, and proliferation of HUVEC and L929 cells on the dense structure surface were examined. Finally, a cranial defect model of rat was employed to evaluate the effect of 3D rGO/HA as a GBR membrane in vivo. The results revealed the 3D rGO/HA membrane had good biocompatibility for MC3T3-E1 and HUVEC cells and could significantly enhance ALP secretion. Furthermore, this membrane also promoted the repair of calvarial defects in vivo. These results demonstrated that 3D porous rGO/HA composite membrane with a porous side and another dense side represents great application potential as an ideal GBR membrane.
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Affiliation(s)
- Wei Liu
- Department of Prosthodontics, School & Hospital of Stomatology, Tianjin Medical University, Tianjin 30070, China
| | - Xingtong Dong
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Han Qin
- Department of Prosthodontics, School & Hospital of Stomatology, Chongqing Medical University, Chongqing 400000, China
| | - Lei Sui
- Department of Prosthodontics, School & Hospital of Stomatology, Tianjin Medical University, Tianjin 30070, China.
| | - Jian Wang
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
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In Vivo Biological Evaluation of Biodegradable Nanofibrous Membranes Incorporated with Antibiofilm Compounds. Polymers (Basel) 2021; 13:polym13152457. [PMID: 34372057 PMCID: PMC8347157 DOI: 10.3390/polym13152457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 12/20/2022] Open
Abstract
Guided bone regeneration involves excluding non-osteogenic cells from the surrounding soft tissues and allowing osteogenic cells originating from native bone to inhabit the defect. The aim of this work was to fabricate, analyze antibiofilm activity and evaluate in vivo biological response of poly (lactic-co-glycolic acid) (PLGA) electrospun membranes incorporated with tea tree oil and furan-2(5H)-one. Samples were exposed to Streptococcus mutans culture and after 48 h incubation, biofilm was evaluated by colony forming units (CFU/mL) followed by scanning electron microscopy. Additionally, seventy-five Balb-C mice were divided into five experimental groups for subcutaneous implantation: tea tree oil loaded PLGA electrospun fiber membrane, furanone loaded PLGA electrospun fiber membrane, neat PLGA electrospun fiber membrane, a commercially available PLGA membrane –Pratix® and Sham (no-membrane implantation). Post implantation period of each experimental group (1, 3 and 9 weeks), samples were collected and processed for by histological descriptive and semiquantitative evaluation. Results showed a significant reduction of bacterial attachment on tea tree oil and furan-2(5H)-one incorporated membranes. Macrophage counts were significant found in all the materials implanted, although giant cells were predominantly associated with electrospun fiber membranes. The incorporation of antibiofilm compounds in nanofibers membranes did not incite inflammatory response significantly different in comparison with pure PLGA electrospun membranes, indicating its potential for development of novel functionalized membranes targeting the inhibition of bacterial biofilms on membrane-grafting materials.
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Ma P, Wang Y, Li B, Hou H. Cross-linking effects of carbodiimide, oxidized chitosan oligosaccharide and glutaraldehyde on acellular dermal matrix of basa fish (Pangasius bocourti). Int J Biol Macromol 2020; 164:677-686. [PMID: 32645500 DOI: 10.1016/j.ijbiomac.2020.07.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/20/2020] [Accepted: 07/03/2020] [Indexed: 11/29/2022]
Abstract
Basa acellular dermal matrix (BADM) has advantages in the preparation of oral prosthetic membranes. In order to prepare high-quality BADM, a suitable cross-linking agent is necessary. In this study, acellular dermal matrix was prepared from basa fish skin and then cross-linked with carbodiimide (EDC), oxidized chitosan oligosaccharide (OCOS) and glutaraldehyde (GA), respectively. Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction analysis (XRD), histological staining, DNA electrophoresis and the limulus amoebocyte lysate chromogenic assay were used to detect the structure and properties of BADM. The compatibility of BADM was detected by implantation in vivo and cell experiments. The results showed that the majority of the cellular and DNA in BADM were removed. The endotoxin was not be detected. Furthermore, the structure of BADM was not destroyed. The mechanical and anti-degraded properties of BADM were promoted obviously after cross-linking. The thermal shrinkage temperatures of wet and dry EDC-BADM (BADM cross-linked by carbodiimide) were increased by 39.22 °C and 18.27 °C, respectively, compared with that of the uncross-linked BADM. In addition, the EDC-BADM had good biocompatibility and cytocompatibility. In conclusion, carbodiimide can improve the properties of BADM, which has potential application in the field of biomaterials.
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Affiliation(s)
- Panpan Ma
- College of Food Science and Engineering, Ocean University of China, No.5, Yu Shan Road, Qingdao, Shandong Province 266003, PR China
| | - Yuekun Wang
- College of Food Science and Engineering, Ocean University of China, No.5, Yu Shan Road, Qingdao, Shandong Province 266003, PR China
| | - Bafang Li
- College of Food Science and Engineering, Ocean University of China, No.5, Yu Shan Road, Qingdao, Shandong Province 266003, PR China
| | - Hu Hou
- College of Food Science and Engineering, Ocean University of China, No.5, Yu Shan Road, Qingdao, Shandong Province 266003, PR China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong Province 266237, PR China.
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Past, Present, and Future of Regeneration Therapy in Oral and Periodontal Tissue: A Review. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9061046] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Chronic periodontitis is the most common disease which induces oral tissue destruction. The goal of periodontal treatment is to reduce inflammation and regenerate the defects. As the structure of periodontium is composed of four types of different tissue (cementum, alveolar bone periodontal ligament, and gingiva), the regeneration should allow different cell proliferation in the separated spaces. Guided tissue regeneration (GTR) and guided bone regeneration (GBR) were introduced to prevent epithelial growth into the alveolar bone space. In the past, non-absorbable membranes with basic functions such as space maintenance were used with bone graft materials. Due to several limitations of the non-absorbable membranes, membranes of the second and third generation equipped with controlled absorbability, and a functional layer releasing growth factors or antimicrobials were introduced. Moreover, tissue engineering using biomaterials enabled faster and more stable tissue regeneration. The scaffold with three-dimensional structures manufactured by computer-aided design and manufacturing (CAD/CAM) showed high biocompatibility, and promoted cell infiltration and revascularization. In the future, using the cell sheath, pre-vascularizing and bioprinting techniques will be applied to the membrane to mimic the original tissue itself. The aim of the review was not only to understand the past and the present trends of GTR and GBR, but also to be used as a guide for a proper future of regeneration therapy in the oral region.
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Zhang Y, Yan Y, Xu X, Lu Y, Chen L, Li D, Dai Y, Kang Y, Yu K. Investigation on the microstructure, mechanical properties, in vitro degradation behavior and biocompatibility of newly developed Zn-0.8%Li-(Mg, Ag) alloys for guided bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:1021-1034. [PMID: 30889634 DOI: 10.1016/j.msec.2019.01.120] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 01/15/2019] [Accepted: 01/25/2019] [Indexed: 12/31/2022]
Abstract
In order to develop a biodegradable guided bone regeneration membrane with the required mechanical properties and high corrosion resistance, Zn-0.8%Li(wt), Zn-0.8%Li-0.2%Mg(wt), and Zn-0.8%Li-0.2%Ag(wt) alloys were cast and hot rolled into 0.1-mm thick sheets. The main secondary phase in Zn-0.8%Li-(Mg, Ag) alloys was the LiZn4 nanoprecipitate. Following the addition of minimal amounts of Mg, the tensile strength of the Zn-0.8%Li-0.2%Mg alloy improved, albeit with a greatly reduced elongation and corrosion resistance. The addition of minimal amounts of Ag refined the microstructure, producing fine equiaxed grains (2.3 μm) in the Zn-0.8%Li-0.2%Ag alloy, and promoted a uniform distribution of LiZn4 nanoprecipitates with increased density and refined size. Therefore, the Zn-0.8%Li-0.2%Ag alloy exhibited optimal tensile strength and the highest corrosion resistance, with its elongation reaching 97.9 ± 8.7%. The corrosion products of Zn-0.8%Li-(Mg, Ag) alloys immersed in Ringer's solution for 35 days mainly consisted of zinc oxide and zinc carbonate. In addition, the cytotoxicity test using L929 cells and the evaluation of bone marrow mesenchymal stem cell proliferation indicated that the Zn-0.8%Li-0.2%Ag alloy had good biocompatibility.
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Affiliation(s)
- Yu Zhang
- School of Materials Science and Engineering, Central South University, Changsha 410083, China; Department of Materials Science and Engineering, Yantai Nanshan University, Yantai 265713, China
| | - Yang Yan
- School of Materials Science and Engineering, Central South University, Changsha 410083, China
| | - Xuemei Xu
- School of Materials Science and Engineering, Central South University, Changsha 410083, China
| | - Yujiao Lu
- School of Materials Science and Engineering, Central South University, Changsha 410083, China; Xiangya Third Hospital, Central South University, Changsha 410013, China
| | - Liangjian Chen
- Xiangya Third Hospital, Central South University, Changsha 410013, China
| | - Ding Li
- The Second XiangYa Hospital, Central South University, Changsha 410011, China
| | - Yilong Dai
- School of Materials Science and Engineering, Central South University, Changsha 410083, China
| | - Yijun Kang
- The Second XiangYa Hospital, Central South University, Changsha 410011, China.
| | - Kun Yu
- School of Materials Science and Engineering, Central South University, Changsha 410083, China; Department of Materials Science and Engineering, Yantai Nanshan University, Yantai 265713, China.
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Sorushanova A, Delgado LM, Wu Z, Shologu N, Kshirsagar A, Raghunath R, Mullen AM, Bayon Y, Pandit A, Raghunath M, Zeugolis DI. The Collagen Suprafamily: From Biosynthesis to Advanced Biomaterial Development. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1801651. [PMID: 30126066 DOI: 10.1002/adma.201801651] [Citation(s) in RCA: 473] [Impact Index Per Article: 94.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 06/03/2018] [Indexed: 05/20/2023]
Abstract
Collagen is the oldest and most abundant extracellular matrix protein that has found many applications in food, cosmetic, pharmaceutical, and biomedical industries. First, an overview of the family of collagens and their respective structures, conformation, and biosynthesis is provided. The advances and shortfalls of various collagen preparations (e.g., mammalian/marine extracted collagen, cell-produced collagens, recombinant collagens, and collagen-like peptides) and crosslinking technologies (e.g., chemical, physical, and biological) are then critically discussed. Subsequently, an array of structural, thermal, mechanical, biochemical, and biological assays is examined, which are developed to analyze and characterize collagenous structures. Lastly, a comprehensive review is provided on how advances in engineering, chemistry, and biology have enabled the development of bioactive, 3D structures (e.g., tissue grafts, biomaterials, cell-assembled tissue equivalents) that closely imitate native supramolecular assemblies and have the capacity to deliver in a localized and sustained manner viable cell populations and/or bioactive/therapeutic molecules. Clearly, collagens have a long history in both evolution and biotechnology and continue to offer both challenges and exciting opportunities in regenerative medicine as nature's biomaterial of choice.
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Affiliation(s)
- Anna Sorushanova
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Luis M Delgado
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Zhuning Wu
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Naledi Shologu
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Aniket Kshirsagar
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Rufus Raghunath
- Centre for Cell Biology and Tissue Engineering, Competence Centre Tissue Engineering for Drug Development (TEDD), Department Life Sciences and Facility Management, Institute for Chemistry and Biotechnology (ICBT), Zürich University of Applied Sciences, Wädenswil, Switzerland
| | | | - Yves Bayon
- Sofradim Production-A Medtronic Company, Trevoux, France
| | - Abhay Pandit
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Michael Raghunath
- Centre for Cell Biology and Tissue Engineering, Competence Centre Tissue Engineering for Drug Development (TEDD), Department Life Sciences and Facility Management, Institute for Chemistry and Biotechnology (ICBT), Zürich University of Applied Sciences, Wädenswil, Switzerland
| | - Dimitrios I Zeugolis
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
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Yoshimoto I, Sasaki JI, Tsuboi R, Yamaguchi S, Kitagawa H, Imazato S. Development of layered PLGA membranes for periodontal tissue regeneration. Dent Mater 2018; 34:538-550. [DOI: 10.1016/j.dental.2017.12.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 11/30/2017] [Accepted: 12/21/2017] [Indexed: 12/29/2022]
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Elgali I, Omar O, Dahlin C, Thomsen P. Guided bone regeneration: materials and biological mechanisms revisited. Eur J Oral Sci 2017; 125:315-337. [PMID: 28833567 PMCID: PMC5601292 DOI: 10.1111/eos.12364] [Citation(s) in RCA: 400] [Impact Index Per Article: 57.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Guided bone regeneration (GBR) is commonly used in combination with the installment of titanium implants. The application of a membrane to exclude non‐osteogenic tissues from interfering with bone regeneration is a key principle of GBR. Membrane materials possess a number of properties which are amenable to modification. A large number of membranes have been introduced for experimental and clinical verification. This prompts the need for an update on membrane properties and the biological outcomes, as well as a critical assessment of the biological mechanisms governing bone regeneration in defects covered by membranes. The relevant literature for this narrative review was assessed after a MEDLINE/PubMed database search. Experimental data suggest that different modifications of the physicochemical and mechanical properties of membranes may promote bone regeneration. Nevertheless, the precise role of membrane porosities for the barrier function of GBR membranes still awaits elucidation. Novel experimental findings also suggest an active role of the membrane compartment per se in promoting the regenerative processes in the underlying defect during GBR, instead of being purely a passive barrier. The optimization of membrane materials by systematically addressing both the barrier and the bioactive properties is an important strategy in this field of research.
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Affiliation(s)
- Ibrahim Elgali
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, University of Gothenburg, Gothenburg, Sweden
| | - Omar Omar
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, University of Gothenburg, Gothenburg, Sweden
| | - Christer Dahlin
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, University of Gothenburg, Gothenburg, Sweden.,Department of Oral Maxillofacial Surgery/ENT, NU-Hospital organisation, Trollhättan, Sweden
| | - Peter Thomsen
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, University of Gothenburg, Gothenburg, Sweden
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Hu Y, Dan W, Xiong S, Kang Y, Dhinakar A, Wu J, Gu Z. Development of collagen/polydopamine complexed matrix as mechanically enhanced and highly biocompatible semi-natural tissue engineering scaffold. Acta Biomater 2017; 47:135-148. [PMID: 27744068 DOI: 10.1016/j.actbio.2016.10.017] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 09/22/2016] [Accepted: 10/11/2016] [Indexed: 01/13/2023]
Abstract
To improve the mechanical properties and biocompatibility of collagen I matrix, a novel and facile strategy was developed to modify porcine acellular dermal matrix (PADM) via dopamine self-polymerization followed by collagen immobilization to enhance the biological, mechanical and physicochemical properties of PADM. Mechanism study indicated that the polymerization of dopamine onto PADM surface could be regulated by controlling the amount of hydrogen bonds forming between phenol hydroxyl (COH) and nitrogen atom (NCO) within collagen fibers of PADM. The investigations of surface interactions between PDA and PADM illustrated that PDA-PADM system yielded better mechanical properties, thermal stability, surface hydrophilicity and the structural integrity of PADM was maintained after dopamine coating. Furthermore, collagen (COL) was immobilized onto the fresh PDA-PADM to fabricate the collagen-PDA-PADM (COL-PDA-PADM) complexed scaffold. The MTT assay and CLSM observation showed that COL-PDA-PADM had better biocompatibility and higher cellular attachment than pure PADM and COL-PADM without dopamine coating, thus demonstrating the efficacy of PDA as the intermediate layer. Meanwhile, the expression of basic fibroblast growth factor (bFGF) and vascular endothelial growth factor (VEGF) of COL-PDA-PADM were investigated by an in vivo study. The results revealed that COL-PDA-PADM could effectively promote bFGF and VEGF expression, possibly leading to enhancing the dura repairing process. Overall, this work contributed a new insight into the development of a semi-natural tissue engineering scaffold with high biocompatibility and good mechanical properties. STATEMENT OF SIGNIFICANCE Obtaining scaffolds with high biocompatibility and good mechanical properties is still one of the most challenging issues in tissue engineering. To have excellent in vitro and in vivo performance, scaffolds are desired to have similar mechanical and biological properties as the natural extracellular matrix, such as collagen based matrix. Utilizing the surface self-crosslinking and coating strategy, we successfully obtained a novel semi-natural platform with excellent biological and mechanical properties from porcine acellular dermal matrix (PADM), polydopamine and collagen. The results confirmed that this scaffold platform has very excellent cellular performance and very little toxicity/side effects in vivo. Therefore, this semi-natural scaffold may be an appropriate platform for tissue engineering and this strategy would further help to develop more robust scaffolds.
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Zhu S, Gu Z, Hu Y, Dan W, Xiong S. Evaluation of alginate dialdehyde as a suitable crosslinker on modifying porcine acellular dermal matrix: The aggregation of collagenous fibers. J Appl Polym Sci 2016. [DOI: 10.1002/app.43550] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shichen Zhu
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology; Huazhong Agricultural University; No.1 Shizishan Street, Hongshan District Wuhan Hubei 430070 China
- The Sub Center (Wuhan) of National Technology and R&D of Staple Freshwater Fish Processing; Wuhan 430070 China
| | - Zhipeng Gu
- Department of Biomedical Engineering, School of Engineering; Sun Yat-sen University, Xiaoguwei Island, Panyu District; Guangzhou 510006 China
| | - Yang Hu
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology; Huazhong Agricultural University; No.1 Shizishan Street, Hongshan District Wuhan Hubei 430070 China
- The Sub Center (Wuhan) of National Technology and R&D of Staple Freshwater Fish Processing; Wuhan 430070 China
| | - Weihua Dan
- Department of Biomass Chemistry and Engineering; Sichuan University; No.24 South Section 1, Yihuan Road Chengdu Sichuan 610065 China
| | - Shanbai Xiong
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology; Huazhong Agricultural University; No.1 Shizishan Street, Hongshan District Wuhan Hubei 430070 China
- The Sub Center (Wuhan) of National Technology and R&D of Staple Freshwater Fish Processing; Wuhan 430070 China
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Zhang E, Zhu C, Yang J, Sun H, Zhang X, Li S, Wang Y, Sun L, Yao F. Electrospun PDLLA/PLGA composite membranes for potential application in guided tissue regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 58:278-85. [PMID: 26478312 DOI: 10.1016/j.msec.2015.08.032] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Revised: 07/18/2015] [Accepted: 08/22/2015] [Indexed: 01/14/2023]
Abstract
With the aim to explore a membrane system with appropriate degradation rate and excellent cell-occlusiveness for guided tissue regeneration (GTR), a series of poly(D, L-lactic acid) (PDLLA)/poly(D, L-lactic-co-glycolic acid) (PLGA) (100/0, 70/30, 50/50, 30/70, 0/100, w/w) composite membranes were fabricated via electrospinning. The fabricated membranes were evaluated by morphological characterization, water contact angle measurement and tensile test. In vitro degradation was characterized in terms of the weight loss and the morphological change. Moreover, in vitro cytologic research revealed that PDLLA/PLGA composite membranes could efficiently inhibit the infiltration of 293 T cells. Finally, subcutaneous implant test on SD rat in vivo showed that PDLLA/PLGA (70/30, 50/50) composite membranes could function well as a physical barrier to prevent cellular infiltration within 13 weeks. These results suggested that electrospun PDLLA/PLGA (50/50) composite membranes could serve as a promising barrier membrane for guided tissue regeneration due to suitable biodegradability, preferable mechanical properties and excellent cellular shielding effects.
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Affiliation(s)
- Ershuai Zhang
- School of Chemical Engineering and Technology, Key Laboratory of Systems Bioengineering of Ministry of Education, Tianjin University, Tianjin 300072, China
| | - Chuanshun Zhu
- School of Chemical Engineering and Technology, Key Laboratory of Systems Bioengineering of Ministry of Education, Tianjin University, Tianjin 300072, China
| | - Jun Yang
- The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin 300071, China
| | - Hong Sun
- Department of Basic Medical Sciences, North China University of Science and Technology, Tangshan 063000, China
| | - Xiaomin Zhang
- School of Chemical Engineering and Technology, Key Laboratory of Systems Bioengineering of Ministry of Education, Tianjin University, Tianjin 300072, China
| | - Suhua Li
- The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin 300071, China
| | - Yonglan Wang
- Stomatological Hospital, Tianjin Medical University, Tianjin 300070, China
| | - Lu Sun
- Stomatological Hospital, Tianjin Medical University, Tianjin 300070, China
| | - Fanglian Yao
- School of Chemical Engineering and Technology, Key Laboratory of Systems Bioengineering of Ministry of Education, Tianjin University, Tianjin 300072, China.
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Münchow EA, Albuquerque MTP, Zero B, Kamocki K, Piva E, Gregory RL, Bottino MC. Development and characterization of novel ZnO-loaded electrospun membranes for periodontal regeneration. Dent Mater 2015; 31:1038-51. [PMID: 26116414 DOI: 10.1016/j.dental.2015.06.004] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 04/16/2015] [Accepted: 06/01/2015] [Indexed: 12/29/2022]
Abstract
OBJECTIVES This study reports on the synthesis, materials characterization, antimicrobial capacity, and cytocompatibility of novel ZnO-loaded membranes for guided tissue/bone regeneration (GTR/GBR). METHODS Poly(ɛ-caprolactone) (PCL) and PCL/gelatin (PCL/GEL) were dissolved in hexafluoropropanol and loaded with ZnO at distinct concentrations: 0 (control), 5, 15, and 30wt.%. Electrospinning was performed using optimized parameters and the fibers were characterized via scanning and transmission electron microscopies (SEM/TEM), energy dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), contact angle (CA), mechanical testing, antimicrobial activity against periodontopathogens, and cytotoxicity test using human dental pulp stem cells (hDPSCs). Data were analyzed using ANOVA and Tukey (α=5%). RESULTS ZnO nanoparticles were successfully incorporated into the overall submicron fibers, which showed fairly good morphology and microstructure. Upon ZnO nanoparticles' incorporation, the PCL and PCL/GEL fibers became thicker and thinner, respectively. All GEL-containing membranes showed lower CA than the PCL-based membranes, which were highly hydrophobic. Overall, the mechanical properties of the membranes were reduced upon ZnO incorporation, except for PCL-based membranes containing ZnO at the 30wt.% concentration. The presence of GEL enhanced the stretching ability of membranes under wet conditions. All ZnO-containing membranes displayed antibacterial activity against the bacteria tested, which was generally more pronounced with increased ZnO content. All membranes synthesized in this study demonstrated satisfactory cytocompatibility, although the presence of 30wt.% ZnO led to decreased viability. SIGNIFICANCE Collectively, this study suggests that PCL- and PCL/GEL-based membranes containing a low content of ZnO nanoparticles can potentially function as a biologically safe antimicrobial GTR/GBR membrane.
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Affiliation(s)
- Eliseu A Münchow
- Department of Restorative Dentistry, Division of Dental Biomaterials, Indiana University School of Dentistry (IUSD), Indianapolis, IN 46202, USA; Department of Operative Dentistry, Federal University of Pelotas (UFPEL), School of Dentistry, Pelotas, RS 96015-560, Brazil
| | - Maria Tereza P Albuquerque
- Department of Restorative Dentistry, Division of Dental Biomaterials, Indiana University School of Dentistry (IUSD), Indianapolis, IN 46202, USA; Graduate Program in Restorative Dentistry, Universidade Estadual Paulista, São José dos Campos Dental School, São José dos Campos, São Paulo 12245-000, Brazil
| | - Bianca Zero
- Department of Restorative Dentistry, Division of Dental Biomaterials, Indiana University School of Dentistry (IUSD), Indianapolis, IN 46202, USA
| | - Krzysztof Kamocki
- Department of Restorative Dentistry, Division of Dental Biomaterials, Indiana University School of Dentistry (IUSD), Indianapolis, IN 46202, USA
| | - Evandro Piva
- Department of Operative Dentistry, Federal University of Pelotas (UFPEL), School of Dentistry, Pelotas, RS 96015-560, Brazil
| | | | - Marco C Bottino
- Department of Restorative Dentistry, Division of Dental Biomaterials, Indiana University School of Dentistry (IUSD), Indianapolis, IN 46202, USA.
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Holt-Casper D, Theisen JM, Moreno AP, Warren M, Silva F, Grainger DW, Bull DA, Patel AN. Novel xeno-free human heart matrix-derived three-dimensional scaffolds. J Transl Med 2015; 13:194. [PMID: 26084398 PMCID: PMC4505384 DOI: 10.1186/s12967-015-0559-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 06/02/2015] [Indexed: 12/05/2022] Open
Abstract
Rationale Myocardial infarction (MI) results in damaged heart tissue which can progress to severely reduce cardiac function, leading to death. Recent studies have injected dissociated, suspended cardiac cells into coronary arteries to restore function with limited results attributed to poor cell retention and cell death. Extracellular matrix (ECM) injected into damaged cardiac tissue sites show some promising effects. However, combined use of human cardiac ECM and cardiac cells may produce superior benefits to restore cardiac function. Objective This study was designed to assess use of new three-dimensional human heart ECM-derived scaffolds to serve as vehicles to deliver cardiac-derived cells directly to damaged heart tissue and improve cell retention at these sites while also providing biomechanical support and attracting host cell recruitment. Methods and Results ECM-derived porous protein scaffolds were fabricated from human heart tissues. These scaffolds were designed to carry, actively promote and preserve cardiac cell phenotype, viability and functional retention in tissue sites. ECM scaffolds were optimized and were seeded with human cardiomyocytes, cultured and subsequently implanted ex vivo onto infarcted murine epicardium. Seeded human cardiomyocytes readily adhered to human cardiac-derived ECM scaffolds and maintained representative phenotypes including expression of cardiomyocyte-specific markers, and remained electrically synchronous within the scaffold in vitro. Ex vivo, cardiomyocyte-seeded ECM scaffolds spontaneously adhered and incorporated into murine ventricle. Conclusions Decellularized human cardiac tissue-derived 3D ECM scaffolds are effective delivery vehicles for human cardiac cells to directly target ischemic heart tissue and warrant further studies to assess their therapeutic potential in restoring essential cardiac functions. Electronic supplementary material The online version of this article (doi:10.1186/s12967-015-0559-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Dolly Holt-Casper
- Division of Cardiothoracic Surgery, Department of Surgery, University of Utah, Salt Lake City, UT, 84112, USA. .,Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, 84112, USA.
| | - Jeff M Theisen
- Division of Cardiothoracic Surgery, Department of Surgery, University of Utah, Salt Lake City, UT, 84112, USA. .,Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, 84112, USA.
| | - Alonso P Moreno
- Nora Eccles Harrison Cardiovascular Research and Training Institute, University of Utah, Salt Lake City, UT, 84112-5000, USA. .,Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, 84112, USA.
| | - Mark Warren
- Nora Eccles Harrison Cardiovascular Research and Training Institute, University of Utah, Salt Lake City, UT, 84112-5000, USA. .,Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, 84112, USA.
| | - Francisco Silva
- Division of Cardiothoracic Surgery, Department of Surgery, University of Utah, Salt Lake City, UT, 84112, USA. .,Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, 84112, USA.
| | - David W Grainger
- Nora Eccles Harrison Cardiovascular Research and Training Institute, University of Utah, Salt Lake City, UT, 84112-5000, USA. .,Department of Bioengineering, University of Utah, Salt Lake City, UT, 84112, USA. .,Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, 84112, USA.
| | - David A Bull
- Division of Cardiothoracic Surgery, Department of Surgery, University of Utah, Salt Lake City, UT, 84112, USA. .,Nora Eccles Harrison Cardiovascular Research and Training Institute, University of Utah, Salt Lake City, UT, 84112-5000, USA. .,Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, 84112, USA.
| | - Amit N Patel
- Division of Cardiothoracic Surgery, Department of Surgery, University of Utah, Salt Lake City, UT, 84112, USA. .,Nora Eccles Harrison Cardiovascular Research and Training Institute, University of Utah, Salt Lake City, UT, 84112-5000, USA. .,Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, 84112, USA. .,University of Utah, 30 N 1900 E SOM 3c127, Salt Lake City, UT, 84132, USA.
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Thomas V, Nozik D, Patel H, Singh RK, Vohra YK. Biohybrid Fibro-Porous Vascular Scaffolds: Effect of Crosslinking on Properties. ACTA ACUST UNITED AC 2015; 1718. [PMID: 26082566 DOI: 10.1557/opl.2015.490] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Tubular grafts were fabricated from blends of polycaprolactone (PCL) and poly(glycolide -co-caprolactone) (PGC) polymers and coated with an extracellular matrix containing collagens, laminin, and proteoglycans, but not growth factors (HuBiogel™). Multifunctional scaffolds from polymer blends and membrane proteins provide the necessary biomechanics and biological functions for tissue regeneration. Two crosslinking agents, a natural crosslinker namely genipin (Gp) and a carbodiimide reagent namely 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC), were used for further stabilizing the protein matrix and the effect of crosslinking was evaluated for structural, morphological, mechanical properties using SEM, DSC and DMA. SEM images and fiber diameter distribution showed fiber-size between 0.2 µm to 1 µm with the majority of fiber diameters being under 500 nm, indicating upper range of protein fiber-sizes (for example, collagen fibers in extracellular matrix are in 50 to 500 nm diameter range). HB coating did not affect the mechanical properties, but increased its hydrophilicity of the graft. Overall data showed that PCL/PGC blends with 3:1 mass ratio exhibited mechanical properties comparable to those of human native arteries (tensile strength of 1-2 MPa and Young's modulus of <10 MPa). Additionally, the effect of crosslinking on coating stability was investigated to assure the retention of proteins on scaffold for effective cell-matrix interactions.
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Affiliation(s)
- Vinoy Thomas
- Department of Materials Science & Engineering, University of Alabama at Birmingham (UAB), BEC 254, 1720 2 Avenue South, Birmingham, AL 35294, U.S.A ; UAB Center for Nanoscale Materials and Biointegration, Birmingham, AL 35294, U.S.A
| | - Danna Nozik
- Brown University, Providence, RI 02912, U.S.A
| | - Harsh Patel
- Department of Materials Science & Engineering, University of Alabama at Birmingham (UAB), BEC 254, 1720 2 Avenue South, Birmingham, AL 35294, U.S.A
| | - Raj K Singh
- Vivo Bioscience, Inc. Birmingham, AL 35205, U.S.A
| | - Yogesh K Vohra
- UAB Center for Nanoscale Materials and Biointegration, Birmingham, AL 35294, U.S.A
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Characterization and tissue incorporation of cross-linked human acellular dermal matrix. Biomaterials 2015; 44:195-205. [DOI: 10.1016/j.biomaterials.2014.12.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 12/10/2014] [Accepted: 12/16/2014] [Indexed: 11/18/2022]
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Liu X, Dan W, Ju H, Dan N, Gong J. Preparation and evaluation of a novel pADM-derived micro- and nano electrospun collagen membrane. RSC Adv 2015. [DOI: 10.1039/c5ra08992a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel pADM-derived micro- and nano electrospun collagen membrane (PDEC) was successfully prepared by the electrospinning technique.
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Affiliation(s)
- Xinhua Liu
- Key Laboratory for Leather Chemistry and Engineering of the Education Ministry
- Sichuan University
- Chengdu
- China
- Research Center of Biomedical Engineering
| | - Weihua Dan
- Key Laboratory for Leather Chemistry and Engineering of the Education Ministry
- Sichuan University
- Chengdu
- China
- Research Center of Biomedical Engineering
| | - Haiyan Ju
- Key Laboratory for Leather Chemistry and Engineering of the Education Ministry
- Sichuan University
- Chengdu
- China
- Research Center of Biomedical Engineering
| | - Nianhua Dan
- Key Laboratory for Leather Chemistry and Engineering of the Education Ministry
- Sichuan University
- Chengdu
- China
- Research Center of Biomedical Engineering
| | - Juxia Gong
- Key Laboratory for Leather Chemistry and Engineering of the Education Ministry
- Sichuan University
- Chengdu
- China
- Research Center of Biomedical Engineering
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Augustine R, Dominic EA, Reju I, Kaimal B, Kalarikkal N, Thomas S. Electrospun poly(ε-caprolactone)-based skin substitutes:In vivoevaluation of wound healing and the mechanism of cell proliferation. J Biomed Mater Res B Appl Biomater 2014; 103:1445-54. [DOI: 10.1002/jbm.b.33325] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2014] [Revised: 08/23/2014] [Accepted: 11/04/2014] [Indexed: 12/27/2022]
Affiliation(s)
- Robin Augustine
- International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University; Kottayam 686 560 Kerala India
| | - Edwin Anto Dominic
- Pushpagiri Research Centre, Pushpagiri Institute of Medical Sciences & Research Centre; Tiruvalla 689 101 Kerala India
| | - Indu Reju
- Pushpagiri Research Centre, Pushpagiri Institute of Medical Sciences & Research Centre; Tiruvalla 689 101 Kerala India
| | - Balarama Kaimal
- Pushpagiri Research Centre, Pushpagiri Institute of Medical Sciences & Research Centre; Tiruvalla 689 101 Kerala India
| | - Nandakumar Kalarikkal
- International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University; Kottayam 686 560 Kerala India
- School of Pure and Applied Physics, Mahatma Gandhi University; Kottayam 686 560 Kerala India
| | - Sabu Thomas
- International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University; Kottayam 686 560 Kerala India
- School of Chemical Sciences, Mahatma Gandhi University; Kottayam 686 560 Kerala India
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You C, Wang X, Zheng Y, Han C. Three types of dermal grafts in rats: the importance of mechanical property and structural design. Biomed Eng Online 2013; 12:125. [PMID: 24304500 PMCID: PMC3879026 DOI: 10.1186/1475-925x-12-125] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 09/17/2013] [Indexed: 11/10/2022] Open
Abstract
Background To determine how the mechanical property and micro structure affect tissue regeneration and angiogenesis, three types of scaffolds were studied. Acellular dermal matrices (ADM), produced from human skin by removing the epidermis and cells, has been widely used in wound healing because of its high mechanical strength. Collagen scaffolds (CS) incorporated with poly(glycolide-co-L-lactide) (PLGA) mesh forms a well-supported hybrid dermal equivalent poly(glycolide-co-L-lactide) mesh/collagen scaffolds (PMCS). We designed this scaffold to enhance the CS mechanical property. These three different dermal substitutes—ADM, CS and PMCSs are different in the tensile properties and microstructure. Methods Several basic physical characteristics of dermal substitutes were investigated in vitro. To characterize the angiogenesis and tissue regeneration, the materials were embedded subcutaneously in Sprague–Dawley (SD) rats. At weeks 1, 2, 4 and 8 post-surgery, the tissue specimens were harvested for histology, immunohistochemistry and real-time quantitative PCR (RT-qPCR). Results In vitro studies demonstrated ADM had a higher Young’s modulus (6.94 MPa) rather than CS (0.19 MPa) and PMCS (3.33 MPa) groups in the wet state. Compared with ADMs and CSs, PMCSs with three-dimensional porous structures resembling skin and moderate mechanical properties can promote tissue ingrowth more quickly after implantation. In addition, the vascularization of the PMCS group is more obvious than that of the other two groups. The incorporation of a PLGA knitted mesh in CSs can improve the mechanical properties with little influence on the three-dimensional porous microstructure. After implantation, PMCSs can resist the contraction and promote cell infiltration, neotissue formation and blood vessel ingrowth, especially from the mesh side. Although ADM has high mechanical strength, its vascularization is poor because the pore size is too small. In conclusion, the mechanical properties of scaffolds are important for maintaining the three-dimensional microarchitecture of constructs used to induce tissue regeneration and vascularization. Conclusion The results illustrated that tissue regeneration requires the proper pore size and an appropriate mechanical property like PMCS which could satisfy these conditions to sustain growth.
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Affiliation(s)
| | | | | | - Chunmao Han
- Department of Burn, the Second Affiliated Hospital of Zhejiang University, Hangzhou 310009, China.
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Hu Y, Liu L, Dan W, Dan N, Gu Z, Yu X. Synergistic effect of carbodiimide and dehydrothermal crosslinking on acellular dermal matrix. Int J Biol Macromol 2013; 55:221-30. [DOI: 10.1016/j.ijbiomac.2013.01.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Accepted: 01/11/2013] [Indexed: 10/27/2022]
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Qiu J, Li J, Wang G, Zheng L, Ren N, Liu H, Tang W, Jiang H, Wang Y. In vitro investigation on the biodegradability and biocompatibility of genipin cross-linked porcine acellular dermal matrix with intrinsic fluorescence. ACS APPLIED MATERIALS & INTERFACES 2013; 5:344-350. [PMID: 23245190 DOI: 10.1021/am302272k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
As a biocompatible and bioactive natural tissue engineering scaffold, porcine acellular dermal matrix (PADM) has limitations for the application in tissue regeneration due to its low strength and rapid biodegradation. Here, purified PADM was modified by a nontoxic cross-linker (genipin) to enhance its mechanical properties and improve its resistance to enzymatic degradation. In vitro testing results demonstrated that the stiffness of the genipin cross-linked PADM was improved and biodegradation rate was decreased. Results of cell proliferation assays showed that the cross-linking reaction by genipin did not undermine the cytocompatibility of PADM. Furthermore, genipin cross-linking imparted an observable fluorescence allowing visualization of the scaffold's three-dimensional (3D) porous structure and cell distribution by confocal laser scanning microscopy (CLSM). Immunostaining of the cell nuclei and cytoskeleton indicated that MC3T3-E1 preosteoblasts were tightly adhered to and uniformly distributed onto the cross-linked PADM scaffold. Results of this study suggest that the 3D porous genipin cross-linked PADM with intrinsic fluorescence may have broader applications for tissue engineering scaffolds where higher mechanical stiffness is needed.
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Affiliation(s)
- Jichuan Qiu
- Bio-Micro-Nano Functional Materials Center, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China
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Bottino MC, Thomas V, Schmidt G, Vohra YK, Chu TMG, Kowolik MJ, Janowski GM. Recent advances in the development of GTR/GBR membranes for periodontal regeneration—A materials perspective. Dent Mater 2012; 28:703-21. [DOI: 10.1016/j.dental.2012.04.022] [Citation(s) in RCA: 368] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 02/21/2012] [Accepted: 04/16/2012] [Indexed: 10/28/2022]
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