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Doyle SE, Pannella M, Onofrillo C, Bellotti C, Di Bella C, O’Connell CD, Pirogova E, Lucarelli E, Duchi S. NEST3D printed bone-mimicking scaffolds: assessment of the effect of geometrical design on stiffness and angiogenic potential. Front Cell Dev Biol 2024; 12:1353154. [PMID: 38516128 PMCID: PMC10955058 DOI: 10.3389/fcell.2024.1353154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 02/26/2024] [Indexed: 03/23/2024] Open
Abstract
Tissue-engineered implants for bone regeneration require consideration regarding their mineralization and vascularization capacity. Different geometries, such as biomimetic designs and lattices, can influence the mechanical properties and the vascularization capacity of bone-mimicking implants. Negative Embodied Sacrificial Template 3D (NEST3D) printing is a versatile technique across a wide range of materials that enables the production of bone-mimicking scaffolds. In this study, different scaffold motifs (logpile, Voronoi, and trabecular bone) were fabricated via NEST3D printing in polycaprolactone to determine the effect of geometrical design on stiffness (10.44 ± 6.71, 12.61 ± 5.71, and 25.93 ± 4.16 MPa, respectively) and vascularization. The same designs, in a polycaprolactone scaffold only, or when combined with gelatin methacryloyl, were then assessed for their ability to allow the infiltration of blood vessels in a chick chorioallantoic membrane (CAM) assay, a cost-effective and time-efficient in ovo assay to assess vascularization. Our findings showed that gelatin methacrylolyl alone did not allow new chorioallantoic membrane tissue or blood vessels to infiltrate within its structure. However, polycaprolactone on its own or when combined with gelatin methacrylolyl allowed tissue and vessel infiltration in all scaffold designs. The trabecular bone design showed the greatest mineralized matrix production over the three designs tested. This reinforces our hypothesis that both biomaterial choice and scaffold motifs are crucial components for a bone-mimicking scaffold.
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Affiliation(s)
- Stephanie E. Doyle
- Electrical and Biomedical Engineering, School of Engineering. RMIT University, Melbourne, VIC, Australia
- Aikenhead Centre for Medical Discovery (ACMD), St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
| | - Micaela Pannella
- Osteoncology, Bone and Soft Tissue Sarcomas and Innovative Therapies Unit, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Carmine Onofrillo
- Aikenhead Centre for Medical Discovery (ACMD), St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
- Department of Surgery, St Vincent’s Hospital, University of Melbourne, Fitzroy, VIC, Australia
| | - Chiara Bellotti
- Osteoncology, Bone and Soft Tissue Sarcomas and Innovative Therapies Unit, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Claudia Di Bella
- Aikenhead Centre for Medical Discovery (ACMD), St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
- Department of Surgery, St Vincent’s Hospital, University of Melbourne, Fitzroy, VIC, Australia
- Department of Medicine, St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
| | - Cathal D. O’Connell
- Electrical and Biomedical Engineering, School of Engineering. RMIT University, Melbourne, VIC, Australia
- Aikenhead Centre for Medical Discovery (ACMD), St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
| | - Elena Pirogova
- Electrical and Biomedical Engineering, School of Engineering. RMIT University, Melbourne, VIC, Australia
| | - Enrico Lucarelli
- Osteoncology, Bone and Soft Tissue Sarcomas and Innovative Therapies Unit, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Serena Duchi
- Aikenhead Centre for Medical Discovery (ACMD), St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
- Department of Surgery, St Vincent’s Hospital, University of Melbourne, Fitzroy, VIC, Australia
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Garriboli M, Deguchi K, Totonelli G, Georgiades F, Urbani L, Ghionzoli M, Burns AJ, Sebire NJ, Turmaine M, Eaton S, De Coppi P. Development of a porcine acellular bladder matrix for tissue-engineered bladder reconstruction. Pediatr Surg Int 2022; 38:665-677. [PMID: 35316841 PMCID: PMC8983501 DOI: 10.1007/s00383-022-05094-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/02/2022] [Indexed: 12/01/2022]
Abstract
PURPOSE Enterocystoplasty is adopted for patients requiring bladder augmentation, but significant long-term complications highlight need for alternatives. We established a protocol for creating a natural-derived bladder extracellular matrix (BEM) for developing tissue-engineered bladder, and investigated its structural and functional characteristics. METHODS Porcine bladders were de-cellularised with a dynamic detergent-enzymatic treatment using peristaltic infusion. Samples and fresh controls were evaluated using histological staining, ultrastructure (electron microscopy), collagen, glycosaminoglycans and DNA quantification and biomechanical testing. Compliance and angiogenic properties (Chicken chorioallantoic membrane [CAM] assay) were evaluated. T test compared stiffness and glycosaminoglycans, collagen and DNA quantity. p value of < 0.05 was regarded as significant. RESULTS Histological evaluation demonstrated absence of cells with preservation of tissue matrix architecture (collagen and elastin). DNA was 0.01 μg/mg, significantly reduced compared to fresh tissue 0.13 μg/mg (p < 0.01). BEM had increased tensile strength (0.259 ± 0.022 vs 0.116 ± 0.006, respectively, p < 0.0001) and stiffness (0.00075 ± 0.00016 vs 0.00726 ± 0.00216, p = 0.011). CAM assay showed significantly increased number of convergent allantoic vessels after 6 days compared to day 1 (p < 0.01). Urodynamic studies showed that BEM maintains or increases capacity and compliance. CONCLUSION Dynamic detergent-enzymatic treatment produces a BEM which retains structural characteristics, increases strength and stiffness and is more compliant than native tissue. Furthermore, BEM shows angiogenic potential. These data suggest the use of BEM for development of tissue-engineered bladder for patients requiring bladder augmentation.
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Affiliation(s)
- Massimo Garriboli
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Programme UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, WC1N 1EH, UK
- Department of Nephro-Urology, Evelina London Children's Hospital, Guys and St. Thomas NHS Foundation Trust, London, UK
| | - Koichi Deguchi
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Programme UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, WC1N 1EH, UK
- Department of Pediatric Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Giorgia Totonelli
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Programme UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, WC1N 1EH, UK
| | - Fanourios Georgiades
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Programme UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, WC1N 1EH, UK
| | - Luca Urbani
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Programme UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, WC1N 1EH, UK
| | - Marco Ghionzoli
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Programme UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, WC1N 1EH, UK
| | - Alan J Burns
- Neural Development Unit, Institute of Child Health, University College London, 30 Guilford Street, London, UK
| | - Neil J Sebire
- Department of Histopathology, Institute of Child Health and Great Ormond Street Hospital, University College London, London, UK
| | - Mark Turmaine
- Division of Bioscience, University College London, London, UK
| | - Simon Eaton
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Programme UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, WC1N 1EH, UK
| | - Paolo De Coppi
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Programme UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, WC1N 1EH, UK.
- Paediatric Surgery Department, Great Ormond Street Hospital, London, UK.
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3
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Joukhdar H, Seifert A, Jüngst T, Groll J, Lord MS, Rnjak-Kovacina J. Ice Templating Soft Matter: Fundamental Principles and Fabrication Approaches to Tailor Pore Structure and Morphology and Their Biomedical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2100091. [PMID: 34236118 DOI: 10.1002/adma.202100091] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/22/2021] [Indexed: 06/13/2023]
Abstract
Porous scaffolds are widely used in biomedical applications where pore size and morphology influence a range of biological processes, including mass transfer of solutes, cellular interactions and organization, immune responses, and tissue vascularization, as well as drug delivery from biomaterials. Ice templating, one of the most widely utilized techniques for the fabrication of porous materials, allows control over pore morphology by controlling ice formation in a suspension of solutes. By fine-tuning freezing and solute parameters, ice templating can be used to incorporate pores with tunable morphological features into a wide range of materials using a simple, accessible, and scalable process. While soft matter is widely ice templated for biomedical applications and includes commercial and clinical products, the principles underpinning its ice templating are not reviewed as well as their inorganic counterparts. This review describes and critically evaluates fundamental principles, fabrication and characterization approaches, and biomedical applications of ice templating in polymer-based biomaterials. It describes the utility of porous scaffolds in biomedical applications, highlighting biological mechanisms impacted by pore features, outlines the physical and thermodynamic mechanisms underpinning ice templating, describes common fabrication setups, critically evaluates complexities of ice templating specific to polymers, and discusses future directions in this field.
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Affiliation(s)
- Habib Joukhdar
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Annika Seifert
- Department for Functional Materials in Medicine and Dentistry, Institute of Functional Materials and Biofabrication, University of Würzburg and KeyLab Polymers for Medicine of the Bavarian Polymer Institute (BPI), Pleicherwall 2, 97070, Würzburg, Germany
| | - Tomasz Jüngst
- Department for Functional Materials in Medicine and Dentistry, Institute of Functional Materials and Biofabrication, University of Würzburg and KeyLab Polymers for Medicine of the Bavarian Polymer Institute (BPI), Pleicherwall 2, 97070, Würzburg, Germany
| | - Jürgen Groll
- Department for Functional Materials in Medicine and Dentistry, Institute of Functional Materials and Biofabrication, University of Würzburg and KeyLab Polymers for Medicine of the Bavarian Polymer Institute (BPI), Pleicherwall 2, 97070, Würzburg, Germany
| | - Megan S Lord
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Jelena Rnjak-Kovacina
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
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Lee JM, Suen SKQ, Ng WL, Ma WC, Yeong WY. Bioprinting of Collagen: Considerations, Potentials, and Applications. Macromol Biosci 2020; 21:e2000280. [PMID: 33073537 DOI: 10.1002/mabi.202000280] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/21/2020] [Indexed: 12/15/2022]
Abstract
Collagen is the most abundant extracellular matrix protein that is widely used in tissue engineering (TE). There is little research done on printing pure collagen. To understand the bottlenecks in printing pure collagen, it is imperative to understand collagen from a bottom-up approach. Here it is aimed to provide a comprehensive overview of collagen printing, where collagen assembly in vivo and the various sources of collagen available for TE application are first understood. Next, the current printing technologies and strategy for printing collagen-based materials are highlighted. Considerations and key challenges faced in collagen printing are identified. Finally, the key research areas that would enhance the functionality of printed collagen are presented.
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Affiliation(s)
- Jia Min Lee
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Sean Kang Qiang Suen
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Wei Long Ng
- HP-NTU Digital Manufacturing Corporate Lab, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Wai Cheung Ma
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Wai Yee Yeong
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.,HP-NTU Digital Manufacturing Corporate Lab, 50 Nanyang Avenue, Singapore, 639798, Singapore
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5
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Simitzi C, Hendow E, Li Z, Day RM. Promotion of Proangiogenic Secretome from Mesenchymal Stromal Cells via Hierarchically Structured Biodegradable Microcarriers. ADVANCED BIOSYSTEMS 2020; 4:e2000062. [PMID: 32511898 PMCID: PMC8425330 DOI: 10.1002/adbi.202000062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 05/13/2020] [Indexed: 02/07/2023]
Abstract
Adipose-derived mesenchymal stromal cells (AdMSC) release numerous soluble factors capable of stimulating angiogenesis. Improved methods for delivering these cells to maximize their potency are now sought that ideally they retain viable cells in the target tissue while promoting the secretion of angiogenic factors. Substrate surface topography is a parameter that can be used to manipulate the behavior of AdMSC but challenges exist with translating this parameter into materials compatible with minimally invasive delivery into tissues for in situ delivery of the angiogenic secretome. The current study investigates three compositions of hierarchically structured, porous biodegradable microcarriers for the culture of AdMSC and the influence of their surface topographies on the angiogenic secretome. All three compositions perform well as cell microcarriers in xeno-free conditions. The attached AdMSC retain their capacity for subsequent trilineage differentiation. The secretome of AdMSC attached to the microcarriers consists of multiple proangiogenic factors, including significantly elevated levels of vascular endothelial growth factor, which stimulates angiogenesis in vitro. The unique properties of hierarchically structured, porous biodegradable microcarriers investigated in this study offer a radically transformative approach for achieving targeted in vivo delivery of AdMSC and enhancing the potency of their proangiogenic activity to induce neovascularization in ischemic tissue.
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Affiliation(s)
- Chara Simitzi
- Applied Biomedical Engineering Group Centre for Precision HealthcareUCL Division of MedicineUniversity College LondonLondonWC1E 6JFUK
| | - Eseelle Hendow
- Applied Biomedical Engineering Group Centre for Precision HealthcareUCL Division of MedicineUniversity College LondonLondonWC1E 6JFUK
| | - Zhuangnan Li
- Department of ChemistryUniversity College LondonLondonWC1H 0AJUK
| | - Richard M. Day
- Applied Biomedical Engineering Group Centre for Precision HealthcareUCL Division of MedicineUniversity College LondonLondonWC1E 6JFUK
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6
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Busra MFM, Lokanathan Y. Recent Development in the Fabrication of Collagen Scaffolds for Tissue Engineering Applications: A Review. Curr Pharm Biotechnol 2020; 20:992-1003. [PMID: 31364511 DOI: 10.2174/1389201020666190731121016] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 05/13/2019] [Accepted: 07/08/2019] [Indexed: 11/22/2022]
Abstract
Tissue engineering focuses on developing biological substitutes to restore, maintain or improve tissue functions. The three main components of its application are scaffold, cell and growthstimulating signals. Scaffolds composed of biomaterials mainly function as the structural support for ex vivo cells to attach and proliferate. They also provide physical, mechanical and biochemical cues for the differentiation of cells before transferring to the in vivo site. Collagen has been long used in various clinical applications, including drug delivery. The wide usage of collagen in the clinical field can be attributed to its abundance in nature, biocompatibility, low antigenicity and biodegradability. In addition, the high tensile strength and fibril-forming ability of collagen enable its fabrication into various forms, such as sheet/membrane, sponge, hydrogel, beads, nanofibre and nanoparticle, and as a coating material. The wide option of fabrication technology together with the excellent biological and physicochemical characteristics of collagen has stimulated the use of collagen scaffolds in various tissue engineering applications. This review describes the fabrication methods used to produce various forms of scaffolds used in tissue engineering applications.
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Affiliation(s)
- Mohammad F Mh Busra
- Tissue Engineering Centre, Faculty of Medicine, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Yogeswaran Lokanathan
- Tissue Engineering Centre, Faculty of Medicine, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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7
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Kohli N, Sawadkar P, Ho S, Sharma V, Snow M, Powell S, Woodruff MA, Hook L, García-Gareta E. Pre-screening the intrinsic angiogenic capacity of biomaterials in an optimised ex ovo chorioallantoic membrane model. J Tissue Eng 2020; 11:2041731420901621. [PMID: 32110373 PMCID: PMC7000866 DOI: 10.1177/2041731420901621] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 12/23/2019] [Indexed: 12/12/2022] Open
Abstract
Biomaterial development for clinical applications is currently on the rise. This necessitates adequate in vitro testing, where the structure and composition of biomaterials must be specifically tailored to withstand in situ repair and regeneration responses for a successful clinical outcome. The chorioallantoic membrane of chicken embryos has been previously used to study angiogenesis, a prerequisite for most tissue repair and regeneration. In this study, we report an optimised ex ovo method using a glass-cling film set-up that yields increased embryo survival rates and has an improved protocol for harvesting biomaterials. Furthermore, we used this method to examine the intrinsic angiogenic capacity of a variety of biomaterials categorised as natural, synthetic, natural/synthetic and natural/natural composites with varying porosities. We detected significant differences in biomaterials' angiogenesis with natural polymers and polymers with a high overall porosity showing a greater vascularisation compared to synthetic polymers. Therefore, our proposed ex ovo chorioallantoic membrane method can be effectively used to pre-screen biomaterials intended for clinical application.
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Affiliation(s)
- Nupur Kohli
- Regenerative Biomaterials Group, RAFT
Institute, Mount Vernon Hospital, Northwood, UK
- Department of Mechanical Engineering,
Imperial College London, London, UK
| | - Prasad Sawadkar
- Regenerative Biomaterials Group, RAFT
Institute, Mount Vernon Hospital, Northwood, UK
| | - Sonia Ho
- Regenerative Biomaterials Group, RAFT
Institute, Mount Vernon Hospital, Northwood, UK
| | - Vaibhav Sharma
- Regenerative Biomaterials Group, RAFT
Institute, Mount Vernon Hospital, Northwood, UK
| | - Martyn Snow
- Royal Orthopaedic Hospital NHS
Foundation Trust, Birmingham, UK
| | - Sean Powell
- Institute of Health and Biomedical
Innovation, Queensland University of Technology, Brisbane, Australia
| | - Maria A Woodruff
- Institute of Health and Biomedical
Innovation, Queensland University of Technology, Brisbane, Australia
| | - Lilian Hook
- Smart Matrix Limited, Leopold Muller
Building, Mount Vernon Hospital, Northwood, UK
| | - Elena García-Gareta
- Regenerative Biomaterials Group, RAFT
Institute, Mount Vernon Hospital, Northwood, UK
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8
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Lama M, Fernandes FM, Marcellan A, Peltzer J, Trouillas M, Banzet S, Grosbot M, Sanchez C, Giraud-Guille MM, Lataillade JJ, Coulomb B, Boissière C, Nassif N. Self-Assembled Collagen Microparticles by Aerosol as a Versatile Platform for Injectable Anisotropic Materials. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1902224. [PMID: 31880410 DOI: 10.1002/smll.201902224] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 11/01/2019] [Indexed: 06/10/2023]
Abstract
Extracellular matrices (ECM) rich in type I collagen exhibit characteristic anisotropic ultrastructures. Nevertheless, working in vitro with this biomacromolecule remains challenging. When processed, denaturation of the collagen molecule is easily induced in vitro avoiding proper fibril self-assembly and further hierarchical order. Here, an innovative approach enables the production of highly concentrated injectable collagen microparticles, based on collagen molecules self-assembly, thanks to the use of spray-drying process. The versatility of the process is shown by performing encapsulation of secretion products of gingival mesenchymal stem cells (gMSCs), which are chosen as a bioactive therapeutic product for their potential efficiency in stimulating the regeneration of a damaged ECM. The injection of collagen microparticles in a cell culture medium results in a locally organized fibrillar matrix. The efficiency of this approach for making easily handleable collagen microparticles for encapsulation and injection opens perspectives in active tissue regeneration and 3D bioprinted scaffolds.
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Affiliation(s)
- Milena Lama
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, 4 Place Jussieu, F-75005, Paris, France
- Sciences et Ingénierie de la Matière Molle, ESPCI Paris, PSL University, CNRS, Sorbonne Université, 10 rue Vauquelin, F-75005, Paris, France
| | - Francisco M Fernandes
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, 4 Place Jussieu, F-75005, Paris, France
| | - Alba Marcellan
- Sciences et Ingénierie de la Matière Molle, ESPCI Paris, PSL University, CNRS, Sorbonne Université, 10 rue Vauquelin, F-75005, Paris, France
| | - Juliette Peltzer
- Prof. J.-J. Lataillade, Unité mixte Inserm UMR-1197 - Institut de Recherche Biomédicale des Armées (IRBA), Antenne Centre de Transfusion Sanguine des Armées, 1, rue du Lieutenant Raoul Batany, F-92141, Clamart, France
| | - Marina Trouillas
- Prof. J.-J. Lataillade, Unité mixte Inserm UMR-1197 - Institut de Recherche Biomédicale des Armées (IRBA), Antenne Centre de Transfusion Sanguine des Armées, 1, rue du Lieutenant Raoul Batany, F-92141, Clamart, France
| | - Sébastien Banzet
- Prof. J.-J. Lataillade, Unité mixte Inserm UMR-1197 - Institut de Recherche Biomédicale des Armées (IRBA), Antenne Centre de Transfusion Sanguine des Armées, 1, rue du Lieutenant Raoul Batany, F-92141, Clamart, France
| | - Marion Grosbot
- Prof. J.-J. Lataillade, Unité mixte Inserm UMR-1197 - Institut de Recherche Biomédicale des Armées (IRBA), Antenne Centre de Transfusion Sanguine des Armées, 1, rue du Lieutenant Raoul Batany, F-92141, Clamart, France
| | - Clément Sanchez
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, 4 Place Jussieu, F-75005, Paris, France
| | - Marie-Madeleine Giraud-Guille
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, 4 Place Jussieu, F-75005, Paris, France
| | - Jean-Jacques Lataillade
- Prof. J.-J. Lataillade, Unité mixte Inserm UMR-1197 - Institut de Recherche Biomédicale des Armées (IRBA), Antenne Centre de Transfusion Sanguine des Armées, 1, rue du Lieutenant Raoul Batany, F-92141, Clamart, France
| | - Bernard Coulomb
- Paris Research Cardiovascular Center (PARCC), Institut National de la Santé et de la Recherche Médicale (INSERM) U970, Paris-Descartes University, 56 rue Leblanc, F-75015, Paris, France
| | - Cédric Boissière
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, 4 Place Jussieu, F-75005, Paris, France
| | - Nadine Nassif
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, 4 Place Jussieu, F-75005, Paris, France
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9
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Novel multimodal MRI and MicroCT imaging approach to quantify angiogenesis and 3D vascular architecture of biomaterials. Sci Rep 2019; 9:19474. [PMID: 31857617 PMCID: PMC6923434 DOI: 10.1038/s41598-019-55411-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 11/27/2019] [Indexed: 12/11/2022] Open
Abstract
Quantitative assessment of functional perfusion capacity and vessel architecture is critical when validating biomaterials for regenerative medicine purposes and requires high-tech analytical methods. Here, combining two clinically relevant imaging techniques, (magnetic resonance imaging; MRI and microcomputed tomography; MicroCT) and using the chorioallantoic membrane (CAM) assay, we present and validate a novel functional and morphological three-dimensional (3D) analysis strategy to study neovascularization in biomaterials relevant for bone regeneration. Using our new pump-assisted approach, the two scaffolds, Optimaix (laminar structure mimicking entities of the diaphysis) and DegraPol (highly porous resembling spongy bone), were shown to directly affect the architecture of the ingrowing neovasculature. Perfusion capacity (MRI) and total vessel volume (MicroCT) strongly correlated for both biomaterials, suggesting that our approach allows for a comprehensive evaluation of the vascularization pattern and efficiency of biomaterials. Being compliant with the 3R-principles (replacement, reduction and refinement), the well-established and easy-to-handle CAM model offers many advantages such as low costs, immune-incompetence and short experimental times with high-grade read-outs when compared to conventional animal models. Therefore, combined with our imaging-guided approach it represents a powerful tool to study angiogenesis in biomaterials.
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10
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Moreno-Jiménez I, Lanham SA, Kanczler JM, Hulsart-Billstrom G, Evans ND, Oreffo ROC. Remodelling of human bone on the chorioallantoic membrane of the chicken egg: De novo bone formation and resorption. J Tissue Eng Regen Med 2019; 12:1877-1890. [PMID: 29893478 DOI: 10.1002/term.2711] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 05/08/2018] [Accepted: 06/01/2018] [Indexed: 12/11/2022]
Abstract
Traditionally used as an angiogenic assay, the chorioallantoic membrane (CAM) assay of the chick embryo offers significant potential as an in vivo model for xenograft organ culture. Viable human bone can be cultivated on the CAM and increases in bone volume are evident; however, it remains unclear by what mechanism this change occurs and whether this reflects the physiological process of bone remodelling. In this study we tested the hypothesis that CAM-induced bone remodelling is a consequence of host and graft mediated processes. Bone cylinders harvested from femoral heads post surgery were placed on the CAM of green fluorescent protein (GFP)-chick embryos for 9 days, followed by micro computed tomography (μCT) and histological analysis. Three-dimensional registration of consecutive μCT-scans showed newly mineralised tissue in CAM-implanted bone cylinders, as well as new osteoid deposition histologically. Immunohistochemistry demonstrated the presence of bone resorption and formation markers (Cathepsin K, SOX9 and RUNX2) co-localising with GFP staining, expressed by avian cells only. To investigate the role of the human cells in the process of bone formation, decellularised bone cylinders were implanted on the CAM and comparable increases in bone volume were observed, indicating that avian cells were responsible for the bone mineralisation process. Finally, CAM-implantation of acellular collagen sponges, containing bone morphogenetic protein 2, resulted in the deposition of extracellular matrix and tissue mineralisation. These studies indicate that the CAM can respond to osteogenic stimuli and support formation or resorption of implanted human bone, providing a humanised CAM model for regenerative medicine research and a novel short-term in vivo model for tissue engineering and biomaterial testing.
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Affiliation(s)
- Inés Moreno-Jiménez
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Human Development and Health, Institute of Developmental Sciences University of Southampton, Southampton, UK
| | - Stuart A Lanham
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Human Development and Health, Institute of Developmental Sciences University of Southampton, Southampton, UK
| | - Janos M Kanczler
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Human Development and Health, Institute of Developmental Sciences University of Southampton, Southampton, UK
| | - Gry Hulsart-Billstrom
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Human Development and Health, Institute of Developmental Sciences University of Southampton, Southampton, UK
| | - Nicholas D Evans
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Human Development and Health, Institute of Developmental Sciences University of Southampton, Southampton, UK
| | - Richard O C Oreffo
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Human Development and Health, Institute of Developmental Sciences University of Southampton, Southampton, UK
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11
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Shirosaki Y, Nakatsukasa M, Yasutomi S, Cruz-Neves S, Hayakawa S, Osaka A, Maeda T, Miyazaki T. Cytocompatible and Antibacterial Properties of Chitosan-Siloxane Hybrid Spheres. Polymers (Basel) 2019; 11:E1676. [PMID: 31615042 PMCID: PMC6835879 DOI: 10.3390/polym11101676] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/11/2019] [Accepted: 10/11/2019] [Indexed: 11/24/2022] Open
Abstract
Microporous spheres in a hybrid system consisting of chitosan and γ-glycidoxypropyltrimethoxysilane (GPTMS) have advantages in a range of applications, e.g., as vehicles for cell transplantation and soft tissue defect filling materials, because of their excellent cytocompatibility with various cells. In this study, microporous chitosan-GPTMS spheres were prepared by dropping chitosan-GPTMS precursor sols, with or without a cerium chloride, into liquid nitrogen using a syringe pump. The droplets were then freeze dried to give the pores of size 10 to 50 μm. The cell culture tests showed that L929 fibroblast-like cells migrated into the micropores larger than 50 μm in diameter, whereas MG63 osteoblast-like cells proliferated well and covered the granule surfaces. The spheres with cerium chloride showed antibacterial properties against both gram-negative and gram-positive bacteria.
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Affiliation(s)
- Yuki Shirosaki
- Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu, Fukuoka 804-8550, Japan.
| | - Manato Nakatsukasa
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan.
| | - Saki Yasutomi
- Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu, Fukuoka 804-8550, Japan.
| | - Susana Cruz-Neves
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0196, Japan.
| | - Satoshi Hayakawa
- Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan.
| | - Akiyoshi Osaka
- Faculty of Engineering, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan.
| | - Toshinari Maeda
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0196, Japan.
| | - Toshiki Miyazaki
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0196, Japan.
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12
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Gupta V, Khan Y, Berkland CJ, Laurencin CT, Detamore MS. Microsphere-Based Scaffolds in Regenerative Engineering. Annu Rev Biomed Eng 2018. [PMID: 28633566 DOI: 10.1146/annurev-bioeng-071516-044712] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Microspheres have long been used in drug delivery applications because of their controlled release capabilities. They have increasingly served as the fundamental building block for fabricating scaffolds for regenerative engineering because of their ability to provide a porous network, offer high-resolution control over spatial organization, and deliver growth factors/drugs and/or nanophase materials. Because they provide physicochemical gradients via spatiotemporal release of bioactive factors and nanophase ceramics, microspheres are a desirable tool for engineering complex tissues and biological interfaces. In this review we describe various methods for microsphere fabrication and sintering, and elucidate how these methods influence both micro- and macroscopic scaffold properties, with a special focus on the nature of sintering. Furthermore, we review key applications of microsphere-based scaffolds in regenerating various tissues. We hope to inspire researchers to join a growing community of investigators using microspheres as tissue engineering scaffolds so that their full potential in regenerative engineering may be realized.
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Affiliation(s)
- Vineet Gupta
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66045;
| | - Yusuf Khan
- Department of Orthopaedic Surgery, University of Connecticut Health Campus, Farmington, Connecticut 06030; , .,Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut 06269.,Institute for Regenerative Engineering, University of Connecticut Health Campus, Farmington, Connecticut 06030
| | - Cory J Berkland
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66045; .,Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas 66045;
| | - Cato T Laurencin
- Department of Orthopaedic Surgery, University of Connecticut Health Campus, Farmington, Connecticut 06030; , .,Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut 06269.,Institute for Regenerative Engineering, University of Connecticut Health Campus, Farmington, Connecticut 06030
| | - Michael S Detamore
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma 73019;
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13
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Moreno-Jiménez I, Kanczler JM, Hulsart-Billstrom G, Inglis S, Oreffo RO. The Chorioallantoic Membrane Assay for Biomaterial Testing in Tissue Engineering: A Short-TermIn VivoPreclinical Model. Tissue Eng Part C Methods 2017; 23:938-952. [DOI: 10.1089/ten.tec.2017.0186] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Inés Moreno-Jiménez
- Bone and Joint Research Group, Faculty of Medicine, Institute of Developmental Sciences, Center for Human Development, Stem Cells and Regeneration, Human Development and Health, University of Southampton, Southampton, United Kingdom
| | - Janos M. Kanczler
- Bone and Joint Research Group, Faculty of Medicine, Institute of Developmental Sciences, Center for Human Development, Stem Cells and Regeneration, Human Development and Health, University of Southampton, Southampton, United Kingdom
| | - Gry Hulsart-Billstrom
- Bone and Joint Research Group, Faculty of Medicine, Institute of Developmental Sciences, Center for Human Development, Stem Cells and Regeneration, Human Development and Health, University of Southampton, Southampton, United Kingdom
| | - Stefanie Inglis
- Bone and Joint Research Group, Faculty of Medicine, Institute of Developmental Sciences, Center for Human Development, Stem Cells and Regeneration, Human Development and Health, University of Southampton, Southampton, United Kingdom
| | - Richard O.C. Oreffo
- Bone and Joint Research Group, Faculty of Medicine, Institute of Developmental Sciences, Center for Human Development, Stem Cells and Regeneration, Human Development and Health, University of Southampton, Southampton, United Kingdom
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14
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Choi JW, Kim JW, Jo IH, Koh YH, Kim HE. Novel Self-Assembly-Induced Gelation for Nanofibrous Collagen/Hydroxyapatite Composite Microspheres. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E1110. [PMID: 28934135 PMCID: PMC5666916 DOI: 10.3390/ma10101110] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 09/15/2017] [Accepted: 09/17/2017] [Indexed: 12/31/2022]
Abstract
This study demonstrates the utility of the newly developed self-assembly-induced gelation technique for the synthesis of porous collagen/hydroxyapatite (HA) composite microspheres with a nanofibrous structure. This new approach can produce microspheres of a uniform size using the droplets that form at the nozzle tip before gelation. These microspheres can have a highly nanofibrous structure due to the immersion of the droplets in a coagulation bath (water/acetone), in which the collagen aggregates in the solution can self-assemble into fibrils due to pH-dependent precipitation. Bioactive HA particles were incorporated into the collagen solutions, in order to enhance the bioactivity of the composite microspheres. The composite microspheres exhibited a well-defined spherical morphology and a uniform size for all levels of HA content (0 wt %, 10 wt %, 15 wt %, and 20 wt %). Collagen nanofibers-several tens of nanometers in size-were uniformly present throughout the microspheres and the HA particles were also well dispersed. The in vitro apatite-forming ability, assessed using the simulated body fluid (SBF) solution, increased significantly with the incorporation of HA into the composite microspheres.
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Affiliation(s)
- Jae-Won Choi
- Department of Biomedical Engineering, Korea University, Seoul 02841, Korea.
| | - Jong-Woo Kim
- Department of Biomedical Engineering, Korea University, Seoul 02841, Korea.
| | - In-Hwan Jo
- Department of Biomedical Engineering, Korea University, Seoul 02841, Korea.
| | - Young-Hag Koh
- Department of Biomedical Engineering, Korea University, Seoul 02841, Korea.
| | - Hyoun-Ee Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Korea.
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15
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Gettler BC, Zakhari JS, Gandhi PS, Williams SK. Formation of Adipose Stromal Vascular Fraction Cell-Laden Spheroids Using a Three-Dimensional Bioprinter and Superhydrophobic Surfaces. Tissue Eng Part C Methods 2017; 23:516-524. [PMID: 28665236 DOI: 10.1089/ten.tec.2017.0056] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The therapeutic infusion of adipose-derived stromal vascular fraction (SVF) cells for the treatment of multiple diseases, has progressed to numerous human clinical trials; however, the often poor retention of the cells following implantation remains a common drawback of direct cell injection. One solution to cellular retention at the injection site has been the use of biogels to encapsulate cells within a microenvironment before and upon implantation. The current study utilized three-dimensional bioprinting technology to evaluate the ability to form SVF cell-laden spheroids with collagen I as a gel-forming biomatrix. A superhydrophobic surface was created to maintain the bioprinted structures in a spheroid shape. A hydrophilic disc was printed onto the hydrophobic surface to immobilize the spheroids during the gelation process. Conditions for the automated rapid formation of SVF cell-laden spheroids were explored, including time/pressure relationships for spheroid extrusion during bioprinting. The formed spheroids maintain SVF viability in both static culture and dynamic spinner culture. Spheroids also undergo a time-dependent contraction with the retention of angiogenic sprout phenotype over the 14-day culture period. The use of a biphilic surface exhibiting both superhydrophobicity to maintain the spheroid shape and a hydrophilicity to immobilize the spheroid during gel formation produces SVF cell-laden spheroids that can be immediately transplanted for therapeutic applications.
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Affiliation(s)
- Brian C Gettler
- Cardiovascular Innovation Institute, University of Louisville , Louisville, Kentucky
| | - Joseph S Zakhari
- Cardiovascular Innovation Institute, University of Louisville , Louisville, Kentucky
| | - Piyani S Gandhi
- Cardiovascular Innovation Institute, University of Louisville , Louisville, Kentucky
| | - Stuart K Williams
- Cardiovascular Innovation Institute, University of Louisville , Louisville, Kentucky
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16
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Moreno-Jiménez I, Hulsart-Billstrom G, Lanham SA, Janeczek AA, Kontouli N, Kanczler JM, Evans ND, Oreffo ROC. The chorioallantoic membrane (CAM) assay for the study of human bone regeneration: a refinement animal model for tissue engineering. Sci Rep 2016; 6:32168. [PMID: 27577960 PMCID: PMC5006015 DOI: 10.1038/srep32168] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 08/02/2016] [Indexed: 01/08/2023] Open
Abstract
Biomaterial development for tissue engineering applications is rapidly increasing but necessitates efficacy and safety testing prior to clinical application. Current in vitro and in vivo models hold a number of limitations, including expense, lack of correlation between animal models and human outcomes and the need to perform invasive procedures on animals; hence requiring new predictive screening methods. In the present study we tested the hypothesis that the chick embryo chorioallantoic membrane (CAM) can be used as a bioreactor to culture and study the regeneration of human living bone. We extracted bone cylinders from human femoral heads, simulated an injury using a drill-hole defect, and implanted the bone on CAM or in vitro control-culture. Micro-computed tomography (μCT) was used to quantify the magnitude and location of bone volume changes followed by histological analyses to assess bone repair. CAM blood vessels were observed to infiltrate the human bone cylinder and maintain human cell viability. Histological evaluation revealed extensive extracellular matrix deposition in proximity to endochondral condensations (Sox9+) on the CAM-implanted bone cylinders, correlating with a significant increase in bone volume by μCT analysis (p < 0.01). This human-avian system offers a simple refinement model for animal research and a step towards a humanized in vivo model for tissue engineering.
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Affiliation(s)
- Inés Moreno-Jiménez
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Human Development and Health, Institute of Developmental Sciences University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Gry Hulsart-Billstrom
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Human Development and Health, Institute of Developmental Sciences University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Stuart A. Lanham
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Human Development and Health, Institute of Developmental Sciences University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Agnieszka A. Janeczek
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Human Development and Health, Institute of Developmental Sciences University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Nasia Kontouli
- Cancer Sciences Unit, Somers Cancer Research, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Janos M. Kanczler
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Human Development and Health, Institute of Developmental Sciences University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Nicholas D. Evans
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Human Development and Health, Institute of Developmental Sciences University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Richard OC Oreffo
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Human Development and Health, Institute of Developmental Sciences University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
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17
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Mi HY, Jing X, McNulty J, Salick MR, Peng XF, Turng LS. Approaches to Fabricating Multiple-Layered Vascular Scaffolds Using Hybrid Electrospinning and Thermally Induced Phase Separation Methods. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.5b03462] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hao-Yang Mi
- The
Key Laboratory for Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou, China
| | - Xin Jing
- The
Key Laboratory for Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou, China
| | | | | | - Xiang-Fang Peng
- The
Key Laboratory for Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou, China
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18
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Electrospray synthesis and properties of hierarchically structured PLGA TIPS microspheres for use as controlled release technologies. J Colloid Interface Sci 2016; 467:220-229. [PMID: 26803601 DOI: 10.1016/j.jcis.2016.01.021] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 12/22/2015] [Accepted: 01/11/2016] [Indexed: 02/02/2023]
Abstract
Microsphere-based controlled release technologies have been utilized for the long-term delivery of proteins, peptides and antibiotics, although their synthesis poses substantial challenges owing to formulation complexities, lack of scalability, and cost. To address these shortcomings, we used the electrospray process as a reproducible, synthesis technique to manufacture highly porous (>94%) microspheres while maintaining control over particle structure and size. Here we report a successful formulation recipe used to generate spherical poly(lactic-co-glycolic) acid (PLGA) microspheres using the electrospray (ES) coupled with a novel thermally induced phase separation (TIPS) process with a tailored Liquid Nitrogen (LN2) collection scheme. We show how size, shape and porosity of resulting microspheres can be controlled by judiciously varying electrospray processing parameters and we demonstrate examples in which the particle size (and porosity) affect release kinetics. The effect of electrospray treatment on the particles and their physicochemical properties are characterized by scanning electron microscopy, confocal Raman microscopy, thermogravimetric analysis and mercury intrusion porosimetry. The microspheres manufactured here have successfully demonstrated long-term delivery (i.e. 1week) of an active agent, enabling sustained release of a dye with minimal physical degradation and have verified the potential of scalable electrospray technologies for an innovative TIPS-based microsphere production protocol.
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19
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Murali R, Thanikaivelan P. Bionic, porous, functionalized hybrid scaffolds with vascular endothelial growth factor promote rapid wound healing in Wistar albino rats. RSC Adv 2016. [DOI: 10.1039/c5ra27571g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Biomimetic collagen-poly(dialdehyde) locust bean gum based hybrid scaffolds synergistically combined with vascular endothelial growth factor were prepared to regenerate tissue formation for wound healing applications.
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Affiliation(s)
- Ragothaman Murali
- Advanced Materials Laboratory
- Centre for Leather Apparel & Accessories Development
- Central Leather Research Institute (Council of Scientific and Industrial Research)
- Chennai 600020
- India
| | - Palanisamy Thanikaivelan
- Advanced Materials Laboratory
- Centre for Leather Apparel & Accessories Development
- Central Leather Research Institute (Council of Scientific and Industrial Research)
- Chennai 600020
- India
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20
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Murali R, Thanikaivelan P, Cheirmadurai K. Melatonin in functionalized biomimetic constructs promotes rapid tissue regeneration in Wistar albino rats. J Mater Chem B 2016; 4:5850-5862. [DOI: 10.1039/c6tb01221c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Biomimetic collagen–poly(dialdehyde) gum acacia based hybrid scaffolds with a synergistic combination of melatonin were prepared to regenerate tissue formation in wound-healing applications.
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Affiliation(s)
- Ragothaman Murali
- Advanced Materials Laboratory
- Central Leather Research Institute (Council of Scientific and Industrial Research)
- Chennai 600020
- India
| | - Palanisamy Thanikaivelan
- Advanced Materials Laboratory
- Central Leather Research Institute (Council of Scientific and Industrial Research)
- Chennai 600020
- India
| | - Kalirajan Cheirmadurai
- Advanced Materials Laboratory
- Central Leather Research Institute (Council of Scientific and Industrial Research)
- Chennai 600020
- India
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21
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Akbarzadeh R, Yousefi AM. Effects of processing parameters in thermally induced phase separation technique on porous architecture of scaffolds for bone tissue engineering. J Biomed Mater Res B Appl Biomater 2014; 102:1304-15. [PMID: 24425207 DOI: 10.1002/jbm.b.33101] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 11/16/2013] [Accepted: 12/17/2013] [Indexed: 12/22/2022]
Abstract
Tissue engineering makes use of 3D scaffolds to sustain three-dimensional growth of cells and guide new tissue formation. To meet the multiple requirements for regeneration of biological tissues and organs, a wide range of scaffold fabrication techniques have been developed, aiming to produce porous constructs with the desired pore size range and pore morphology. Among different scaffold fabrication techniques, thermally induced phase separation (TIPS) method has been widely used in recent years because of its potential to produce highly porous scaffolds with interconnected pore morphology. The scaffold architecture can be closely controlled by adjusting the process parameters, including polymer type and concentration, solvent composition, quenching temperature and time, coarsening process, and incorporation of inorganic particles. The objective of this review is to provide information pertaining to the effect of these parameters on the architecture and properties of the scaffolds fabricated by the TIPS technique.
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Affiliation(s)
- Rosa Akbarzadeh
- Department of Chemical Paper and Biomedical Engineering, Miami University, Oxford, Ohio, 45056
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22
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Preparation of porous microsphere-scaffolds by electrohydrodynamic forming and thermally induced phase separation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:2488-98. [DOI: 10.1016/j.msec.2012.12.098] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 12/20/2012] [Accepted: 12/22/2012] [Indexed: 11/23/2022]
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23
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Vargas GE, Haro Durand LA, Cadena V, Romero M, Mesones RV, Mačković M, Spallek S, Spiecker E, Boccaccini AR, Gorustovich AA. Effect of nano-sized bioactive glass particles on the angiogenic properties of collagen based composites. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:1261-1269. [PMID: 23430337 DOI: 10.1007/s10856-013-4892-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Accepted: 02/10/2013] [Indexed: 06/01/2023]
Abstract
Angiogenesis is essential for tissue regeneration and repair. A growing body of evidence shows that the use of bioactive glasses (BG) in biomaterial-based tissue engineering (TE) strategies may improve angiogenesis and induce increased vascularization in TE constructs. This work investigated the effect of adding nano-sized BG particles (n-BG) on the angiogenic properties of bovine type I collagen/n-BG composites. Nano-sized (20-30 nm) BG particles of nominally 45S5 Bioglass® composition were used to prepare composite films, which were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The in vivo angiogenic response was evaluated using the quail chorioallantoic membrane (CAM) as an model of angiogenesis. At 24 h post-implantation, 10 wt% n-BG containing collagen films stimulated angiogenesis by increasing by 41 % the number of blood vessels branch points. In contrast, composite films containing 20 wt% n-BG were found to inhibit angiogenesis. This experimental study provides the first evidence that addition of a limited concentration of n-BG (10 wt%) to collagen films induces an early angiogenic response making selected collagen/n-BG composites attractive matrices for tissue engineering and regenerative medicine.
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Affiliation(s)
- Gabriela E Vargas
- Interdisciplinary Materials Group-IESIING-UCASAL, INTECIN UBA-CONICET, A4400EDD, Salta, Argentina
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24
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Elowsson L, Kirsebom H, Carmignac V, Mattiasson B, Durbeej M. Evaluation of macroporous blood and plasma scaffolds for skeletal muscle tissue engineering. Biomater Sci 2013; 1:402-410. [DOI: 10.1039/c2bm00054g] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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25
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26
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Liu G, Wu C, Fan W, Miao X, Sin DC, Crawford R, Xiao Y. The effects of bioactive akermanite on physiochemical, drug-delivery, and biological properties of poly(lactide-co-glycolide) beads. J Biomed Mater Res B Appl Biomater 2011; 96:360-8. [DOI: 10.1002/jbm.b.31779] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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Baiguera S, Jungebluth P, Burns A, Mavilia C, Haag J, De Coppi P, Macchiarini P. Tissue engineered human tracheas for in vivo implantation. Biomaterials 2010; 31:8931-8. [PMID: 20800273 DOI: 10.1016/j.biomaterials.2010.08.005] [Citation(s) in RCA: 143] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2010] [Accepted: 08/04/2010] [Indexed: 10/19/2022]
Abstract
Two years ago we performed the first clinical successful transplantation of a fully tissue engineered trachea. Despite the clinically positive outcome, the graft production took almost 3 months, a not feasible period of time for patients with the need of an urgent transplantation. We have then improved decellularization process and herein, for the first time, we completely describe and characterize the obtainment of human tracheal bioactive supports. Histological and molecular biology analysis demonstrated that all cellular components and nuclear material were removed and quantitative PCR confirmed it. SEM analysis revealed that the decellularized matrices retained the hierarchical structures of native trachea, and biomechanical tests showed that decellularization approach did not led to any influence on tracheal morphological and mechanical properties. Moreover immunohistological staining showed the preservation of angiogenic factors and angiogenic assays demonstrated that acellular human tracheal scaffolds exert an in vitro chemo-active action and induce strong in vivo angiogenic response (CAM analysis). We are now able to obtained, in a short and clinically useful time (approximately 3 weeks), a bioengineered trachea that is structurally and mechanically similar to native trachea, which exert chemotactive and pro-angiogenic properties and which could be successfully used for clinical tissue engineered airway clinical replacements.
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Affiliation(s)
- Silvia Baiguera
- BIOAIR Lab, Department of General Thoracic and Regenerative Surgery and Intrathoracic Biotransplantation University Hospital Careggi, Largo Brambilla 3, I-50134 Florence, Italy
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