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Sardelli L, Pacheco DP, Zorzetto L, Rinoldi C, Święszkowski W, Petrini P. Engineering biological gradients. J Appl Biomater Funct Mater 2019; 17:2280800019829023. [PMID: 30803308 DOI: 10.1177/2280800019829023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Biological gradients profoundly influence many cellular activities, such as adhesion, migration, and differentiation, which are the key to biological processes, such as inflammation, remodeling, and tissue regeneration. Thus, engineered structures containing bioinspired gradients can not only support a better understanding of these phenomena, but also guide and improve the current limits of regenerative medicine. In this review, we outline the challenges behind the engineering of devices containing chemical-physical and biomolecular gradients, classifying them according to gradient-making methods and the finalities of the systems. Different manufacturing processes can generate gradients in either in-vitro systems or scaffolds, which are suitable tools for the study of cellular behavior and for regenerative medicine; within these, rapid prototyping techniques may have a huge impact on the controlled production of gradients. The parallel need to develop characterization techniques is addressed, underlining advantages and weaknesses in the analysis of both chemical and physical gradients.
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Affiliation(s)
- L Sardelli
- 1 Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Milan, Italy
| | - D P Pacheco
- 1 Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Milan, Italy
| | - L Zorzetto
- 2 Department of Aerospace and Mechanical Engineering, University of Liège, Liège, Belgium
| | - C Rinoldi
- 3 Faculty of Materials Science and Engineering, Warsaw University of Technology, Poland
| | - W Święszkowski
- 3 Faculty of Materials Science and Engineering, Warsaw University of Technology, Poland
| | - P Petrini
- 1 Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Milan, Italy
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Rogowska-Tylman J, Locs J, Salma I, Woźniak B, Pilmane M, Zalite V, Wojnarowicz J, Kędzierska-Sar A, Chudoba T, Szlązak K, Chlanda A, Święszkowski W, Gedanken A, Łojkowski W. In vivo and in vitro study of a novel nanohydroxyapatite sonocoated scaffolds for enhanced bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:669-684. [DOI: 10.1016/j.msec.2019.01.084] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 01/13/2019] [Accepted: 01/14/2019] [Indexed: 12/11/2022]
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Hu X, Li W, Li L, Lu Y, Wang Y, Parungao R, Zheng S, Liu T, Nie Y, Wang H, Song K. A biomimetic cartilage gradient hybrid scaffold for functional tissue engineering of cartilage. Tissue Cell 2019; 58:84-92. [PMID: 31133251 DOI: 10.1016/j.tice.2019.05.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 04/03/2019] [Accepted: 05/01/2019] [Indexed: 12/29/2022]
Abstract
Osteochondral tissue has a complex layered structure that is not self-repairing after a cartilage defect. Therefore, constructing a biomimetic gradient scaffold that meets the specific structural requirements of osteochondral tissue is a major challenge in the field of cartilage tissue engineering. In this study, chitosan/Sodium β-glycerophosphate/Gelatin (Cs/GP/Gel) biomimetic gradient scaffolds were prepared by regulating the mass ratio of single layer raw materials. The same ratio of Cs/GP/Gel hybrid scaffold material was used as the control. Physical properties such as water absorption, porosity and the degradation rate of the material were compared to optimize the proportion of scaffold materials. P3 Bone Mesenchymal Stem Cells (BMSCs) were inoculated on the gradient and the control scaffolds to investigate its biocompatibility. Scanning electron microscopy (SEM) results show that 3:1:2, 6:1:3.5, 9:1:5, 12:1:6.5, 15:1:8 Cs/GP/Gel gradient scaffolds had excellent three-dimensional porous structures. Channels were also shown to have been interconnected, and the walls of the pores were folded. In the longitudinal dimension, gradient scaffolds had an obvious stratified structure and pore gradient gradualism, that effectively simulated the natural physiological stratified structure of real cartilage. The diameter of the pores in the control scaffold was uniform and without any pore gradient. Gradient scaffolds had good water absorption (584.24 ± 3.79˜677.47 ± 1.70%), porosity (86.34 ± 5.10˜95.20 ± 2.86%) and degradation (86.09 ± 2.46˜92.48 ± 3.86%). After considering the physical properties assessed, the Cs/GP/Gel gradient scaffold with a ratio of 9:1:5 was found to be the most suitable material to support osteochondral tissue. BMSCs were subsequently inoculated on the proportional gradient and hybrid scaffolds culture. These cells survived, distributed and extended well on the gradient and hybrid scaffold material. The biomimetic gradient scaffold designed and prepared in this study provides an important foundation for the development of new gradient composite biomedical materials for osteochondral repair.
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Affiliation(s)
- Xueyan Hu
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, China
| | - Wenfang Li
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, China
| | - Liying Li
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yanguo Lu
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yiwei Wang
- Burns Research Group, ANZAC Research Institute, University of Sydney, Concord, NSW, 2139, Australia
| | - Roxanne Parungao
- Burns Research Group, ANZAC Research Institute, University of Sydney, Concord, NSW, 2139, Australia
| | - Shuangshuang Zheng
- Zhengzhou Institute of Emerging Industrial Technology, Zhengzhou 450000, China; Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Tianqing Liu
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Yi Nie
- Zhengzhou Institute of Emerging Industrial Technology, Zhengzhou 450000, China; Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Hongfei Wang
- Department of Orthopedics, The Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China.
| | - Kedong Song
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, China.
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Theodoridis K, Aggelidou E, Vavilis T, Manthou ME, Tsimponis A, Demiri EC, Boukla A, Salpistis C, Bakopoulou A, Mihailidis A, Kritis A. Hyaline cartilage next generation implants from adipose-tissue-derived mesenchymal stem cells: Comparative study on 3D-printed polycaprolactone scaffold patterns. J Tissue Eng Regen Med 2019; 13:342-355. [DOI: 10.1002/term.2798] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 10/30/2018] [Accepted: 01/03/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Konstantinos Theodoridis
- Department of Physiology and Pharmacology, School of Medicine, Faculty of Health Sciences; Aristotle University of Thessaloniki (A.U.Th); Thessaloniki Greece
- cGMP Regenerative Medicine Facility, Department of Physiology and Pharmacology, School of Medicine, Faculty of Health Sciences; Aristotle University of Thessaloniki (A.U.Th); Thessaloniki Greece
| | - Eleni Aggelidou
- Department of Physiology and Pharmacology, School of Medicine, Faculty of Health Sciences; Aristotle University of Thessaloniki (A.U.Th); Thessaloniki Greece
- cGMP Regenerative Medicine Facility, Department of Physiology and Pharmacology, School of Medicine, Faculty of Health Sciences; Aristotle University of Thessaloniki (A.U.Th); Thessaloniki Greece
| | - Theofanis Vavilis
- Department of Physiology and Pharmacology, School of Medicine, Faculty of Health Sciences; Aristotle University of Thessaloniki (A.U.Th); Thessaloniki Greece
- cGMP Regenerative Medicine Facility, Department of Physiology and Pharmacology, School of Medicine, Faculty of Health Sciences; Aristotle University of Thessaloniki (A.U.Th); Thessaloniki Greece
| | - Maria Eleni Manthou
- cGMP Regenerative Medicine Facility, Department of Physiology and Pharmacology, School of Medicine, Faculty of Health Sciences; Aristotle University of Thessaloniki (A.U.Th); Thessaloniki Greece
- Laboratory of Histology, Embryology and Anthropology, School of Medicine, Faculty of Health Sciences; Aristotle University of Thessaloniki (A.U.Th); Thessaloniki Greece
| | - Antonios Tsimponis
- Department of Plastic Surgery, Medical School, Papageorgiou Hospital; Aristotle University of Thessaloniki (A.U.Th); Thessaloniki Greece
| | - Efterpi C. Demiri
- Department of Plastic Surgery, Medical School, Papageorgiou Hospital; Aristotle University of Thessaloniki (A.U.Th); Thessaloniki Greece
| | - Anna Boukla
- Histocompatibility Centre-Immunology Department; Hippokration General Hospital; Thessaloniki Greece
| | - Christos Salpistis
- Laboratory of Machine Elements and Machine Design, School of Mechanical Engineering; Aristotle University of Thessaloniki (A.U.Th.); Thessaloniki Greece
| | - Athina Bakopoulou
- cGMP Regenerative Medicine Facility, Department of Physiology and Pharmacology, School of Medicine, Faculty of Health Sciences; Aristotle University of Thessaloniki (A.U.Th); Thessaloniki Greece
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences; Aristotle University of Thessaloniki (A.U.Th); Thessaloniki Greece
| | - Athanassios Mihailidis
- Laboratory of Machine Elements and Machine Design, School of Mechanical Engineering; Aristotle University of Thessaloniki (A.U.Th.); Thessaloniki Greece
| | - Aristeidis Kritis
- Department of Physiology and Pharmacology, School of Medicine, Faculty of Health Sciences; Aristotle University of Thessaloniki (A.U.Th); Thessaloniki Greece
- cGMP Regenerative Medicine Facility, Department of Physiology and Pharmacology, School of Medicine, Faculty of Health Sciences; Aristotle University of Thessaloniki (A.U.Th); Thessaloniki Greece
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The influence of chemical polishing of titanium scaffolds on their mechanical strength and in-vitro cell response. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 95:428-439. [DOI: 10.1016/j.msec.2018.04.019] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 03/25/2018] [Accepted: 04/10/2018] [Indexed: 11/21/2022]
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56
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Yu F, Han X, Zhang K, Dai B, Shen S, Gao X, Teng H, Wang X, Li L, Ju H, Wang W, Zhang J, Jiang Q. Evaluation of a polyvinyl alcohol-alginate based hydrogel for precise 3D bioprinting. J Biomed Mater Res A 2018; 106:2944-2954. [PMID: 30329209 DOI: 10.1002/jbm.a.36483] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 04/10/2018] [Accepted: 06/06/2018] [Indexed: 01/25/2023]
Affiliation(s)
- Fei Yu
- Drum Tower of Clinical Medicine, Nanjing Medical University; Nanjing China
- Department of Sports Medicine and Adult Reconstructive Surgery; Drum Tower Hospital affiliated to Medical School of Nanjing University; Nanjing China
| | - Xiao Han
- Department of Sports Medicine and Adult Reconstructive Surgery; Drum Tower Hospital affiliated to Medical School of Nanjing University; Nanjing China
| | - Kaijia Zhang
- Department of Sports Medicine and Adult Reconstructive Surgery; Drum Tower Hospital affiliated to Medical School of Nanjing University; Nanjing China
- Model Animal Research Center; Nanjing University; Nanjing China
| | - Bingyang Dai
- Department of Sports Medicine and Adult Reconstructive Surgery; Drum Tower Hospital affiliated to Medical School of Nanjing University; Nanjing China
- Model Animal Research Center; Nanjing University; Nanjing China
| | - Sheng Shen
- Department of Sports Medicine and Adult Reconstructive Surgery; Drum Tower Hospital affiliated to Medical School of Nanjing University; Nanjing China
| | - Xiang Gao
- Model Animal Research Center; Nanjing University; Nanjing China
| | - Huajian Teng
- Model Animal Research Center; Nanjing University; Nanjing China
| | - Xingsong Wang
- School of Mechanical Engineering; Southeast University; Nanjing China
- Institue of Medical 3D Printing, Nanjing University; Nanjing China
| | - Lan Li
- School of Mechanical Engineering; Southeast University; Nanjing China
- Institue of Medical 3D Printing, Nanjing University; Nanjing China
| | - Huangxian Ju
- School of Chemistry and Chemical Engineering; Nanjing University; Nanjing China
| | - Wei Wang
- Department of Physics; Nanjing University; Nanjing China
| | - Junfeng Zhang
- School of Medicine; Nanjing University; Nanjing China
| | - Qing Jiang
- Drum Tower of Clinical Medicine, Nanjing Medical University; Nanjing China
- Department of Sports Medicine and Adult Reconstructive Surgery; Drum Tower Hospital affiliated to Medical School of Nanjing University; Nanjing China
- Model Animal Research Center; Nanjing University; Nanjing China
- Institue of Medical 3D Printing, Nanjing University; Nanjing China
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Ort C, Dayekh K, Xing M, Mequanint K. Emerging Strategies for Stem Cell Lineage Commitment in Tissue Engineering and Regenerative Medicine. ACS Biomater Sci Eng 2018; 4:3644-3657. [PMID: 33429592 DOI: 10.1021/acsbiomaterials.8b00532] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Stem cells have transformed the fields of tissue engineering and regenerative medicine, and their potential to further advance these fields cannot be overstated. The stem cell niche is a dynamic microenvironment that determines cell fate during development and tissue repair following an injury. Classically, stem cells were studied in isolation of their microenvironment; however, contemporary research has produced a myriad of evidence that shows the importance of multiple aspects of the stem cell niche in regulating their processes. In the context of tissue engineering and regenerative medicine studies, the niche is an artificial environment provided by culture conditions. In vitro culture conditions may involve coculturing with other cell types, developing specific biomaterials, and applying relevant forces to promote the desired lineage commitment. Considerable advance has been made over the past few years toward directed stem cell differentiation; however, the unspecific differentiation of stem cells yielding a mixed population of cells has been a challenge. In this review, we provide a systematic review of the emerging strategies used for lineage commitment within the context of tissue engineering and regenerative medicine. These strategies include scaffold pore-size and pore-shape gradients, stress relaxation, sonic and electromagnetic effects, and magnetic forces. Finally, we provide insights and perspectives into future directions focusing on signaling pathways activated during lineage commitment using external stimuli.
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Affiliation(s)
| | | | - Malcolm Xing
- Department of Mechanical Engineering, University of Manitoba, 66 Chancellors Circle, Winnipeg R3T 2N2, Canada
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58
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Shepherd JH, Howard D, Waller AK, Foster HR, Mueller A, Moreau T, Evans AL, Arumugam M, Bouët Chalon G, Vriend E, Davidenko N, Ghevaert C, Best SM, Cameron RE. Structurally graduated collagen scaffolds applied to the ex vivo generation of platelets from human pluripotent stem cell-derived megakaryocytes: Enhancing production and purity. Biomaterials 2018; 182:135-144. [PMID: 30118981 DOI: 10.1016/j.biomaterials.2018.08.019] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 08/03/2018] [Accepted: 08/06/2018] [Indexed: 01/05/2023]
Abstract
Platelet transfusions are a key treatment option for a range of life threatening conditions including cancer, chemotherapy and surgery. Efficient ex vivo systems to generate donor independent platelets in clinically relevant numbers could provide a useful substitute. Large quantities of megakaryocytes (MKs) can be produced from human pluripotent stem cells, but in 2D culture the ratio of platelets harvested from MK cells has been limited and restricts production rate. The development of biomaterial cell supports that replicate vital hematopoietic micro-environment cues are one strategy that may increase in vitro platelet production rates from iPS derived Megakaryocyte cells. In this paper, we present the results obtained generating, simulating and using a novel structurally-graded collagen scaffold within a flow bioreactor system seeded with programmed stem cells. Theoretical analysis of porosity using micro-computed tomography analysis and synthetic micro-particle filtration provided a predictive tool to tailor cell distribution throughout the material. When used with MK programmed stem cells the graded scaffolds influenced cell location while maintaining the ability to continuously release metabolically active CD41 + CD42 + functional platelets. This scaffold design and novel fabrication technique offers a significant advance in understanding the influence of scaffold architectures on cell seeding, retention and platelet production.
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Affiliation(s)
- Jennifer H Shepherd
- Cambridge Centre for Medical Materials, Department of Materials Science and Metallurgy, 27 Charles Babbage Road, Cambridge CB3 0FS, UK.
| | - Daniel Howard
- Department of Haematology, University of Cambridge, National Health Blood Service Centre, Long Road, Cambridge CB2 0PT, UK
| | - Amie K Waller
- Department of Haematology, University of Cambridge, National Health Blood Service Centre, Long Road, Cambridge CB2 0PT, UK
| | - Holly Rebecca Foster
- Department of Haematology, University of Cambridge, National Health Blood Service Centre, Long Road, Cambridge CB2 0PT, UK
| | - Annett Mueller
- Department of Haematology, University of Cambridge, National Health Blood Service Centre, Long Road, Cambridge CB2 0PT, UK
| | - Thomas Moreau
- Department of Haematology, University of Cambridge, National Health Blood Service Centre, Long Road, Cambridge CB2 0PT, UK
| | - Amanda L Evans
- Department of Haematology, University of Cambridge, National Health Blood Service Centre, Long Road, Cambridge CB2 0PT, UK
| | - Meera Arumugam
- Department of Haematology, University of Cambridge, National Health Blood Service Centre, Long Road, Cambridge CB2 0PT, UK
| | - Guénaëlle Bouët Chalon
- Department of Haematology, University of Cambridge, National Health Blood Service Centre, Long Road, Cambridge CB2 0PT, UK
| | - Eleonora Vriend
- Cambridge Centre for Medical Materials, Department of Materials Science and Metallurgy, 27 Charles Babbage Road, Cambridge CB3 0FS, UK
| | - Natalia Davidenko
- Cambridge Centre for Medical Materials, Department of Materials Science and Metallurgy, 27 Charles Babbage Road, Cambridge CB3 0FS, UK
| | - Cedric Ghevaert
- Department of Haematology, University of Cambridge, National Health Blood Service Centre, Long Road, Cambridge CB2 0PT, UK.
| | - Serena M Best
- Cambridge Centre for Medical Materials, Department of Materials Science and Metallurgy, 27 Charles Babbage Road, Cambridge CB3 0FS, UK
| | - Ruth E Cameron
- Cambridge Centre for Medical Materials, Department of Materials Science and Metallurgy, 27 Charles Babbage Road, Cambridge CB3 0FS, UK
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60
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Khorshidi S, Karkhaneh A. A review on gradient hydrogel/fiber scaffolds for osteochondral regeneration. J Tissue Eng Regen Med 2018; 12:e1974-e1990. [PMID: 29243352 DOI: 10.1002/term.2628] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Revised: 07/17/2017] [Accepted: 11/27/2017] [Indexed: 12/31/2022]
Abstract
Osteochondral tissue regeneration is a complicated field due to the distinct properties and healing potential of osseous and chondral phases. In a natural osteochondral region, the composition, mechanics, and structure vary smoothly from bony to cartilaginous phase. Therefore, a homogeneous scaffold cannot satisfy the complexity of the osteochondral matrix. In essence, a natural extracellular matrix is composed of fibrous proteins elongated into a gelatinous background. A hydrogel/fiber scaffold possessing gradient in both phases would be of the utmost interest to imitate tissue arrangement of a native osteochondral interface. However, there are limited research works that exploit hydrogel/fiber scaffolds for osteochondral restoration. In the present review, currently used fibrous or gelatinous scaffolds for osteochondral damages are discussed. Moreover, superiority of using gradient hydrogel/fiber composites for osteochondral regeneration and practical approaches to develop those scaffolds is debated.
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Affiliation(s)
- Sajedeh Khorshidi
- Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Akbar Karkhaneh
- Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
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Szlazak K, Vass V, Hasslinger P, Jaroszewicz J, Dejaco A, Idaszek J, Scheiner S, Hellmich C, Swieszkowski W. X-ray physics-based CT-to-composition conversion applied to a tissue engineering scaffold, enabling multiscale simulation of its elastic behavior. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 95:389-396. [PMID: 30573263 DOI: 10.1016/j.msec.2017.11.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 09/05/2017] [Accepted: 11/29/2017] [Indexed: 12/13/2022]
Abstract
Nowadays, the assessment of the mechanical competence of tissue engineering scaffolds based on computer simulations is a well-accepted technology. Typically, such simulations are performed by means of the Finite Element (FE) method, with the underlying structural model being created based on micro-computed tomography (microCT). Here, this analysis modality is applied to a new, ternary composite, consisting of PHBV, i.e. poly(3-hydroxybutyrate-co-3-hydroxyvalerate), PLGA, i.e. poly(lactic-co-glycolide), as well as of TCP, i.e. tricalcium phosphate hydrate. The studied scaffold structure is made up by fibers of this new composite material, manufactured by means of the rapid prototyping method. The data collected from microCT is utilized for adequately defining the mechanical properties of the FE model. In particular, the three-dimensional field of grey values is interpreted in terms of the underlying field of attenuation coefficients, taking into account the photon energy employed in microCT imaging, eventually allowing for calculation of the three-dimensionally distributed, voxel-specific composition of the studied material. For the sake of keeping the FE simulations as efficient as possible, groups of voxels are combined into one finite element; the grey value of the latter is obtained by volume averaging. Employing a two-step micromechanical homogenization scheme, the experimentally accessible stiffness of the three constituents (PHBV, PLGA, and TCP) is then, finite element by finite element, upscaled to the composition-dependent stiffness of the composite material. The plausibility and adequacy of the FE model is demonstrated by simulating the effects of uniaxial compression on the scaffold structure, in terms of resulting stress and strain fields, highlighting the importance of the fiber junctions (as they are the mechanically most stressed regions), and that neglecting the material heterogeneity would lead to a potentially significant underestimation of stresses and strains. Finally, a comparison is made of the employed analysis modality of microCT data with a previously pursued, simplified analysis strategy, highlighting the conceptual superiority of the former, and pointing out the application limits of the latter.
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Affiliation(s)
- Karol Szlazak
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Viktoria Vass
- Institute for Mechanics of Materials and Structures, TU Wien - Vienna University of Technology, Vienna, Austria
| | - Patricia Hasslinger
- Institute for Mechanics of Materials and Structures, TU Wien - Vienna University of Technology, Vienna, Austria
| | - Jakub Jaroszewicz
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Alexander Dejaco
- Institute for Mechanics of Materials and Structures, TU Wien - Vienna University of Technology, Vienna, Austria
| | - Joanna Idaszek
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Stefan Scheiner
- Institute for Mechanics of Materials and Structures, TU Wien - Vienna University of Technology, Vienna, Austria.
| | - Christian Hellmich
- Institute for Mechanics of Materials and Structures, TU Wien - Vienna University of Technology, Vienna, Austria
| | - Wojciech Swieszkowski
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
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Weidenbacher L, Abrishamkar A, Rottmar M, Guex A, Maniura-Weber K, deMello A, Ferguson S, Rossi R, Fortunato G. Electrospraying of microfluidic encapsulated cells for the fabrication of cell-laden electrospun hybrid tissue constructs. Acta Biomater 2017; 64:137-147. [PMID: 29030306 DOI: 10.1016/j.actbio.2017.10.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 09/21/2017] [Accepted: 10/09/2017] [Indexed: 12/14/2022]
Abstract
The fabrication of functional 3D tissues is a major goal in tissue engineering. While electrospinning is a promising technique to manufacture a structure mimicking the extracellular matrix, cell infiltration into electrospun scaffolds remains challenging. The robust and in situ delivery of cells into such biomimetic scaffolds would potentially enable the design of tissue engineered constructs with spatial control over cellular distribution but often solvents employed in the spinning process are problematic due to their high cytotoxicity. Herein, microfluidic cell encapsulation is used to establish a temporary protection vehicle for the in situ delivery of cells for the development of a fibrous, cell-laden hybrid biograft. Therefore a layer-by-layer process is used by alternating fiber electrospinning and cell spraying procedures. Both encapsulation and subsequent electrospraying of capsules has no negative effect on the viability and myogenic differentiation of murine myoblast cells. Propidium iodide positive stained cells were analyzed to quantify the amount of dead cells and the presence of myosin heavy chain positive cells after the processes was shown. Furthermore, encapsulation successfully protects cells from cytotoxic solvents (such as dimethylformamide) during in situ delivery of the cells into electrospun poly(vinylidene fluoride-co-hexafluoropropylene) scaffolds. The resulting cell-populated biografts demonstrate the clear potential of this approach in the creation of viable tissue engineering constructs. STATEMENT OF SIGNIFICANCE Infiltration of cells and their controlled spatial distribution within fibrous electrospun membranes is a challenging task but allows for the development of functional highly organized 3D hybrid tissues. Combining polymer electrospinning and cell electrospraying in a layer-by-layer approach is expected to overcome current limitations of reduced cell infiltration after traditional static seeding. However, organic solvents, used during the electrospinning process, impede often major issues due to their high cytotoxicity. Utilizing microfluidic encapsulation as a mean to embed cells within a protective polymer casing enables the controlled deposition of viable cells without interfering with the cellular phenotype. The presented techniques allow for novel cell manipulation approaches being significant for enhanced 3D tissue engineering based on its versatility in terms of material and cell selection.
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Chen H, Malheiro ADBB, van Blitterswijk C, Mota C, Wieringa PA, Moroni L. Direct Writing Electrospinning of Scaffolds with Multidimensional Fiber Architecture for Hierarchical Tissue Engineering. ACS APPLIED MATERIALS & INTERFACES 2017; 9:38187-38200. [PMID: 29043781 PMCID: PMC5682611 DOI: 10.1021/acsami.7b07151] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Nanofibrous structures have long been used as scaffolds for tissue engineering (TE) applications, due to their favorable characteristics, such as high porosity, flexibility, high cell attachment and enhanced proliferation, and overall resemblance to native extracellular matrix (ECM). Such scaffolds can be easily produced at a low cost via electrospinning (ESP), but generally cannot be fabricated with a regular and/or complex geometry, characterized by macropores and uniform thickness. We present here a novel technique for direct writing (DW) with solution ESP to produce complex three-dimensional (3D) multiscale and ultrathin (∼1 μm) fibrous scaffolds with desirable patterns and geometries. This technique was simply achieved via manipulating technological conditions, such as spinning solution, ambient conditions, and processing parameters. Three different regimes in fiber morphologies were observed, including bundle with dispersed fibers, bundle with a core of aligned fibers, and single fibers. The transition between these regimes depended on tip to collector distance (Wd) and applied voltage (V), which could be simplified as the ratio V/Wd. Using this technique, a scaffold mimicking the zonal organization of articular cartilage was further fabricated as a proof of concept, demonstrating the ability to better mimic native tissue organization. The DW scaffolds directed tissue organization and fibril matrix orientation in a zone-dependent way. Comparative expression of chondrogenic markers revealed a substantial upregulation of Sox9 and aggrecan (ACAN) on these structures compared to conventional electrospun meshes. Our novel method provides a simple way to produce customized 3D ultrathin fibrous scaffolds, with great potential for TE applications, in particular those for which anisotropy is of importance.
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Daly AC, Freeman FE, Gonzalez-Fernandez T, Critchley SE, Nulty J, Kelly DJ. 3D Bioprinting for Cartilage and Osteochondral Tissue Engineering. Adv Healthc Mater 2017; 6. [PMID: 28804984 DOI: 10.1002/adhm.201700298] [Citation(s) in RCA: 180] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 06/15/2017] [Indexed: 12/16/2022]
Abstract
Significant progress has been made in the field of cartilage and bone tissue engineering over the last two decades. As a result, there is real promise that strategies to regenerate rather than replace damaged or diseased bones and joints will one day reach the clinic however, a number of major challenges must still be addressed before this becomes a reality. These include vascularization in the context of large bone defect repair, engineering complex gradients for bone-soft tissue interface regeneration and recapitulating the stratified zonal architecture present in many adult tissues such as articular cartilage. Tissue engineered constructs typically lack such spatial complexity in cell types and tissue organization, which may explain their relatively limited success to date. This has led to increased interest in bioprinting technologies in the field of musculoskeletal tissue engineering. The additive, layer by layer nature of such biofabrication strategies makes it possible to generate zonal distributions of cells, matrix and bioactive cues in 3D. The adoption of biofabrication technology in musculoskeletal tissue engineering may therefore make it possible to produce the next generation of biological implants capable of treating a range of conditions. Here, advances in bioprinting for cartilage and osteochondral tissue engineering are reviewed.
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Affiliation(s)
- Andrew C. Daly
- Trinity Center for Bioengineering; Trinity Biomedical Sciences Institute; Trinity College Dublin; Dublin Ireland
- Department of Mechanical and Manufacturing Engineering; School of Engineering; Trinity College Dublin; Dublin Ireland
- Department of Anatomy; Royal College of Surgeons in Ireland; Dublin Ireland
| | - Fiona E. Freeman
- Trinity Center for Bioengineering; Trinity Biomedical Sciences Institute; Trinity College Dublin; Dublin Ireland
- Department of Mechanical and Manufacturing Engineering; School of Engineering; Trinity College Dublin; Dublin Ireland
- Department of Anatomy; Royal College of Surgeons in Ireland; Dublin Ireland
| | - Tomas Gonzalez-Fernandez
- Trinity Center for Bioengineering; Trinity Biomedical Sciences Institute; Trinity College Dublin; Dublin Ireland
- Department of Mechanical and Manufacturing Engineering; School of Engineering; Trinity College Dublin; Dublin Ireland
- Department of Anatomy; Royal College of Surgeons in Ireland; Dublin Ireland
| | - Susan E. Critchley
- Trinity Center for Bioengineering; Trinity Biomedical Sciences Institute; Trinity College Dublin; Dublin Ireland
- Department of Mechanical and Manufacturing Engineering; School of Engineering; Trinity College Dublin; Dublin Ireland
- Department of Anatomy; Royal College of Surgeons in Ireland; Dublin Ireland
| | - Jessica Nulty
- Trinity Center for Bioengineering; Trinity Biomedical Sciences Institute; Trinity College Dublin; Dublin Ireland
- Department of Mechanical and Manufacturing Engineering; School of Engineering; Trinity College Dublin; Dublin Ireland
- Department of Anatomy; Royal College of Surgeons in Ireland; Dublin Ireland
| | - Daniel J. Kelly
- Trinity Center for Bioengineering; Trinity Biomedical Sciences Institute; Trinity College Dublin; Dublin Ireland
- Department of Mechanical and Manufacturing Engineering; School of Engineering; Trinity College Dublin; Dublin Ireland
- Department of Anatomy; Royal College of Surgeons in Ireland; Dublin Ireland
- Advanced Materials and Bioengineering Research Center (AMBER); Royal College of Surgeons in Ireland and Trinity College Dublin; Dublin Ireland
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Conoscenti G, Schneider T, Stoelzel K, Carfì Pavia F, Brucato V, Goegele C, La Carrubba V, Schulze-Tanzil G. PLLA scaffolds produced by thermally induced phase separation (TIPS) allow human chondrocyte growth and extracellular matrix formation dependent on pore size. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 80:449-459. [DOI: 10.1016/j.msec.2017.06.011] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Revised: 05/26/2017] [Accepted: 06/16/2017] [Indexed: 01/25/2023]
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66
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Di Luca A, Klein-Gunnewiek M, Vancso JG, van Blitterswijk CA, Benetti EM, Moroni L. Covalent Binding of Bone Morphogenetic Protein-2 and Transforming Growth Factor-β3 to 3D Plotted Scaffolds for Osteochondral Tissue Regeneration. Biotechnol J 2017; 12. [PMID: 28865136 DOI: 10.1002/biot.201700072] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 08/28/2017] [Indexed: 11/08/2022]
Abstract
Engineering the osteochondral tissue presents some challenges mainly relying in its function of transition from the subchondral bone to articular cartilage and the gradual variation in several biological, mechanical, and structural features. A possible solution for osteochondral regeneration might be the design and fabrication of scaffolds presenting a gradient able to mimic this transition. Covalent binding of biological factors proved to enhance cell adhesion and differentiation in two-dimensional culture substrates. Here, we used polymer brushes as selective linkers of bone morphogenetic protein-2 (BMP-2) and transforming growth factor-β3 (TGF-β3) on the surface of 3D scaffolds fabricated via additive manufacturing (AM) and subsequent controlled radical polymerization. These growth factors (GFs) are known to stimulate the differentiation of human mesenchymal stromal cells (hMSCs) toward the osteogenic and chondrogenic lineages, respectively. BMP-2 and TGF-β3 were covalently bound both homogeneously within a poly(ethylene glycol) (PEG)-based brush-functionalized scaffolds, and following a gradient composition by varying their concentration along the axial section of the 3D constructs. Following an approach previously developed by our group and proved to be successful to generate fibronectin gradients, opposite brush-supported gradients of BMP-2 and TGF-β3 were finally generated and subsequently tested to differentiate cells in a gradient fashion. The brush-supported GFs significantly influenced hMSCs osteochondral differentiation when the scaffolds were homogenously modified, yet no effect was observed in the gradient scaffolds. Therefore, this technique seems promising to maintain the biological activity of growth factors covalently linked to 3D scaffolds, but needs to be further optimized in case biological gradients are desired.
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Affiliation(s)
- Andrea Di Luca
- University of Twente, Tissue Regeneration Department, Drienerlolaan 5, 7522 NB, Enschede, The Netherlands
| | - Michel Klein-Gunnewiek
- University of Twente, Materials Science and Technology of Polymers Group, Drienerlolaan 5, 7522 NB, Enschede, The Netherlands
| | - Julius G Vancso
- University of Twente, Materials Science and Technology of Polymers Group, Drienerlolaan 5, 7522 NB, Enschede, The Netherlands
| | - Clemens A van Blitterswijk
- University of Twente, Tissue Regeneration Department, Drienerlolaan 5, 7522 NB, Enschede, The Netherlands.,Maastricht University, MERLN Institute for Technology Inspired Regenerative Medicine, Complex Tissue Regeneration Department, P. Debyelaan 25, 6229 HX Maastricht, The Netherlands
| | - Edmondo M Benetti
- University of Twente, Materials Science and Technology of Polymers Group, Drienerlolaan 5, 7522 NB, Enschede, The Netherlands.,Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093-CH Zürich, Switzerland
| | - Lorenzo Moroni
- University of Twente, Tissue Regeneration Department, Drienerlolaan 5, 7522 NB, Enschede, The Netherlands.,Maastricht University, MERLN Institute for Technology Inspired Regenerative Medicine, Complex Tissue Regeneration Department, P. Debyelaan 25, 6229 HX Maastricht, The Netherlands
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67
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Rai V, Dilisio MF, Dietz NE, Agrawal DK. Recent strategies in cartilage repair: A systemic review of the scaffold development and tissue engineering. J Biomed Mater Res A 2017; 105:2343-2354. [PMID: 28387995 DOI: 10.1002/jbm.a.36087] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 03/29/2017] [Indexed: 12/19/2022]
Abstract
Osteoarthritis results in irreparable loss of articular cartilage. Due to its avascular nature and low mitotic activity, cartilage has little intrinsic capacity for repair. Cartilage loss leads to pain, physical disability, movement restriction, and morbidity. Various treatment strategies have been proposed for cartilage regeneration, but the optimum treatment is yet to be defined. Tissue engineering with engineered constructs aimed towards developing a suitable substrate may help in cartilage regeneration by providing the mechanical, biological and chemical support to the cells. The use of scaffold as a substrate to support the progenitor cells or autologous chondrocytes has given promising results. Leakage of cells, poor cell survival, poor cell differentiation, inadequate integration into the host tissue, incorrect distribution of cells, and dedifferentiation of the normal cartilage are the common problems in tissue engineering. Current research is focused on improving mechanical and biochemical properties of scaffold to make it more efficient. The aim of this review is to provide a critical discussion on existing challenges, scaffold type and properties, and an update on ongoing recent developments in the architecture and composition of scaffold to enhance the proliferation and viability of mesenchymal stem cells. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 2343-2354, 2017.
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Affiliation(s)
- Vikrant Rai
- Department of Clinical and Translational Science, Creighton University School of Medicine, Omaha, Nebraska, 68178
| | - Matthew F Dilisio
- Department of Clinical and Translational Science, Creighton University School of Medicine, Omaha, Nebraska, 68178
- Department of Orthopedics, Creighton University School of Medicine, Omaha, Nebraska, 68178
| | - Nicholas E Dietz
- Department of Clinical and Translational Science, Creighton University School of Medicine, Omaha, Nebraska, 68178
- Department of Pathology, Creighton University School of Medicine, Omaha, Nebraska, 68178
| | - Devendra K Agrawal
- Department of Clinical and Translational Science, Creighton University School of Medicine, Omaha, Nebraska, 68178
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68
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Luo G, Huang Y, Gu F. rhBMP2-loaded calcium phosphate cements combined with allogenic bone marrow mesenchymal stem cells for bone formation. Biomed Pharmacother 2017; 92:536-543. [DOI: 10.1016/j.biopha.2017.05.083] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 05/15/2017] [Accepted: 05/17/2017] [Indexed: 12/16/2022] Open
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Cao Z, Bai Y, Liu C, Dou C, Li J, Xiang J, Zhao C, Xie Z, Xiang Q, Dong S. Hypertrophic differentiation of mesenchymal stem cells is suppressed by xanthotoxin via the p38‑MAPK/HDAC4 pathway. Mol Med Rep 2017; 16:2740-2746. [PMID: 28677757 PMCID: PMC5548016 DOI: 10.3892/mmr.2017.6886] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Accepted: 06/08/2017] [Indexed: 12/20/2022] Open
Abstract
Chondrocyte hypertrophy is a physiological process in endochondral ossification. However, the hypertrophic-like alterations of chondrocytes at the articular surface may result in osteoarthritis (OA). In addition, the generation of fibrocartilage with a decreased biological function in tissue engineered cartilage, has been attributed to chondrocyte hypertrophy. Therefore, suppressing chondrocyte hypertrophy in OA and the associated regeneration of non-active cartilage is of primary concern. The present study examined the effects of xanthotoxin (XAT), which is classified as a furanocoumarin, on chondrocyte hypertrophic differentiation of mesenchymal stem cells. Following XAT treatment, the expression levels of genes associated with chondrocyte hypertrophy were detected via immunohistochemistry, western blotting and reverse transcription-quantitative polymerase chain reaction. The results revealed that XAT inhibited the expression of various chondrocyte hypertrophic markers, including runt related transcription factor 2 (Runx2), matrix metalloproteinase 13 and collagen type X α1 chain. Further exploration indicated that XAT reduced the activation of p38-mitogen activated protein kinase and then increased the expression of histone deacetylase 4 to suppress Runx2. The findings indicated that XAT maintained the chondrocyte phenotype in regenerated cartilage and therefore may exhibit promise as a potential drug for the treatment of OA in the future.
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Affiliation(s)
- Zhen Cao
- Department of Anatomy, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, P.R. China
| | - Yun Bai
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, P.R. China
| | - Chuan Liu
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, P.R. China
| | - Ce Dou
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, P.R. China
| | - Jianmei Li
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, P.R. China
| | - Junyu Xiang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, P.R. China
| | - Chunrong Zhao
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, P.R. China
| | - Zhao Xie
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, P.R. China
| | - Qiang Xiang
- Department of Emergency, Southwest Hospital, Third Military Medical University, Chongqing 400038, P.R. China
| | - Shiwu Dong
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, P.R. China
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70
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Font Tellado S, Bonani W, Balmayor ER, Foehr P, Motta A, Migliaresi C, van Griensven M. * Fabrication and Characterization of Biphasic Silk Fibroin Scaffolds for Tendon/Ligament-to-Bone Tissue Engineering. Tissue Eng Part A 2017; 23:859-872. [PMID: 28330431 DOI: 10.1089/ten.tea.2016.0460] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Tissue engineering is an attractive strategy for tendon/ligament-to-bone interface repair. The structure and extracellular matrix composition of the interface are complex and allow for a gradual mechanical stress transfer between tendons/ligaments and bone. Thus, scaffolds mimicking the structural features of the native interface may be able to better support functional tissue regeneration. In this study, we fabricated biphasic silk fibroin scaffolds designed to mimic the gradient in collagen molecule alignment present at the interface. The scaffolds had two different pore alignments: anisotropic at the tendon/ligament side and isotropic at the bone side. Total porosity ranged from 50% to 80% and the majority of pores (80-90%) were <100-300 μm. Young's modulus varied from 689 to 1322 kPa depending on the type of construct. In addition, human adipose-derived mesenchymal stem cells were cultured on the scaffolds to evaluate the effect of pore morphology on cell proliferation and gene expression. Biphasic scaffolds supported cell attachment and influenced cytoskeleton organization depending on pore alignment. In addition, the gene expression of tendon/ligament, enthesis, and cartilage markers significantly changed depending on pore alignment in each region of the scaffolds. In conclusion, the biphasic scaffolds fabricated in this study show promising features for tendon/ligament-to-bone tissue engineering.
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Affiliation(s)
- Sònia Font Tellado
- 1 Department of Experimental Trauma Surgery, Klinikum rechts der Isar, Technical University of Munich , Munich, Germany
| | - Walter Bonani
- 2 Department of Industrial Engineering, BIOtech Research Center and European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Trento , Trento, Italy .,3 Trento Research Unit, INSTM-National Interuniversity Consortium of Materials Science and Technology , Trento, Italy
| | - Elizabeth R Balmayor
- 1 Department of Experimental Trauma Surgery, Klinikum rechts der Isar, Technical University of Munich , Munich, Germany
| | - Peter Foehr
- 4 Department of Orthopaedics and Sports Orthopaedics, Klinikum rechts der Isar, Technical University of Munich , Munich, Germany
| | - Antonella Motta
- 2 Department of Industrial Engineering, BIOtech Research Center and European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Trento , Trento, Italy
| | - Claudio Migliaresi
- 2 Department of Industrial Engineering, BIOtech Research Center and European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Trento , Trento, Italy .,3 Trento Research Unit, INSTM-National Interuniversity Consortium of Materials Science and Technology , Trento, Italy
| | - Martijn van Griensven
- 1 Department of Experimental Trauma Surgery, Klinikum rechts der Isar, Technical University of Munich , Munich, Germany
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71
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Nyberg EL, Farris AL, Hung BP, Dias M, Garcia JR, Dorafshar AH, Grayson WL. 3D-Printing Technologies for Craniofacial Rehabilitation, Reconstruction, and Regeneration. Ann Biomed Eng 2017; 45:45-57. [PMID: 27295184 PMCID: PMC5154778 DOI: 10.1007/s10439-016-1668-5] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 05/31/2016] [Indexed: 12/21/2022]
Abstract
The treatment of craniofacial defects can present many challenges due to the variety of tissue-specific requirements and the complexity of anatomical structures in that region. 3D-printing technologies provide clinicians, engineers and scientists with the ability to create patient-specific solutions for craniofacial defects. Currently, there are three key strategies that utilize these technologies to restore both appearance and function to patients: rehabilitation, reconstruction and regeneration. In rehabilitation, 3D-printing can be used to create prostheses to replace or cover damaged tissues. Reconstruction, through plastic surgery, can also leverage 3D-printing technologies to create custom cutting guides, fixation devices, practice models and implanted medical devices to improve patient outcomes. Regeneration of tissue attempts to replace defects with biological materials. 3D-printing can be used to create either scaffolds or living, cellular constructs to signal tissue-forming cells to regenerate defect regions. By integrating these three approaches, 3D-printing technologies afford the opportunity to develop personalized treatment plans and design-driven manufacturing solutions to improve aesthetic and functional outcomes for patients with craniofacial defects.
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Affiliation(s)
- Ethan L Nyberg
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, 400 N. Broadway, Smith 5023, Baltimore, MD, 21231, USA
| | - Ashley L Farris
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, 400 N. Broadway, Smith 5023, Baltimore, MD, 21231, USA
| | - Ben P Hung
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, 400 N. Broadway, Smith 5023, Baltimore, MD, 21231, USA
| | - Miguel Dias
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, 400 N. Broadway, Smith 5023, Baltimore, MD, 21231, USA
| | - Juan R Garcia
- Department of Art as Applied to Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Amir H Dorafshar
- Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Warren L Grayson
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, 400 N. Broadway, Smith 5023, Baltimore, MD, 21231, USA.
- Department of Material Sciences & Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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72
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Abstract
Many allogeneic biologic materials, by themselves or in combination with cells or cell products, may be transformative in healing or regeneration of musculoskeletal bone and soft tissues. By reconfiguring the size, shape, and methods of tissue preparation to improve deliverability and storage, unique iterations of traditional tissue scaffolds have emerged. These new iterations, combined with new cell technologies, have shaped an exciting platform of regenerative products that are effective and provide a bridge to newer and better methods of providing care for orthopedic foot and ankle patients.
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73
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Di Luca A, Longoni A, Criscenti G, Mota C, van Blitterswijk C, Moroni L. Toward mimicking the bone structure: design of novel hierarchical scaffolds with a tailored radial porosity gradient. Biofabrication 2016; 8:045007. [DOI: 10.1088/1758-5090/8/4/045007] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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