1
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Jackson CE, Green NH, English WR, Claeyssens F. The use of microphysiological systems to model metastatic cancer. Biofabrication 2024; 16:032002. [PMID: 38579739 DOI: 10.1088/1758-5090/ad3b70] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 04/05/2024] [Indexed: 04/07/2024]
Abstract
Cancer is one of the leading causes of death in the 21st century, with metastasis of cancer attributing to 90% of cancer-related deaths. Therefore, to improve patient outcomes there is a need for better preclinical models to increase the success of translating oncological therapies into the clinic. Current traditional staticin vitromodels lack a perfusable network which is critical to overcome the diffusional mass transfer limit to provide a mechanism for the exchange of essential nutrients and waste removal, and increase their physiological relevance. Furthermore, these models typically lack cellular heterogeneity and key components of the immune system and tumour microenvironment. This review explores rapidly developing strategies utilising perfusable microphysiological systems (MPS) for investigating cancer cell metastasis. In this review we initially outline the mechanisms of cancer metastasis, highlighting key steps and identifying the current gaps in our understanding of the metastatic cascade, exploring MPS focused on investigating the individual steps of the metastatic cascade before detailing the latest MPS which can investigate multiple components of the cascade. This review then focuses on the factors which can affect the performance of an MPS designed for cancer applications with a final discussion summarising the challenges and future directions for the use of MPS for cancer models.
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Affiliation(s)
- Caitlin E Jackson
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, United Kingdom
- Insigneo Institute for In Silico Medicine, The Pam Liversidge Building, University of Sheffield, Sheffield S1 3JD, United Kingdom
| | - Nicola H Green
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, United Kingdom
- Insigneo Institute for In Silico Medicine, The Pam Liversidge Building, University of Sheffield, Sheffield S1 3JD, United Kingdom
| | - William R English
- Norwich Medical School, University of East Anglia, Norwich NR3 7TJ, United Kingdom
| | - Frederik Claeyssens
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, United Kingdom
- Insigneo Institute for In Silico Medicine, The Pam Liversidge Building, University of Sheffield, Sheffield S1 3JD, United Kingdom
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2
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Jackson CE, Doyle I, Khan H, Williams SF, Aldemir Dikici B, Barajas Ledesma E, Bryant HE, English WR, Green NH, Claeyssens F. Gelatin-containing porous polycaprolactone PolyHIPEs as substrates for 3D breast cancer cell culture and vascular infiltration. Front Bioeng Biotechnol 2024; 11:1321197. [PMID: 38260750 PMCID: PMC10800367 DOI: 10.3389/fbioe.2023.1321197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 12/13/2023] [Indexed: 01/24/2024] Open
Abstract
Tumour survival and growth are reliant on angiogenesis, the formation of new blood vessels, to facilitate nutrient and waste exchange and, importantly, provide a route for metastasis from a primary to a secondary site. Whilst current models can ensure the transport and exchange of nutrients and waste via diffusion over distances greater than 200 μm, many lack sufficient vasculature capable of recapitulating the tumour microenvironment and, thus, metastasis. In this study, we utilise gelatin-containing polymerised high internal phase emulsion (polyHIPE) templated polycaprolactone-methacrylate (PCL-M) scaffolds to fabricate a composite material to support the 3D culture of MDA-MB-231 breast cancer cells and vascular ingrowth. Firstly, we investigated the effect of gelatin within the scaffolds on the mechanical and chemical properties using compression testing and FTIR spectroscopy, respectively. Initial in vitro assessment of cell metabolic activity and vascular endothelial growth factor expression demonstrated that gelatin-containing PCL-M polyHIPEs are capable of supporting 3D breast cancer cell growth. We then utilised the chick chorioallantoic membrane (CAM) assay to assess the angiogenic potential of cell-seeded gelatin-containing PCL-M polyHIPEs, and vascular ingrowth within cell-seeded, surfactant and gelatin-containing scaffolds was investigated via histological staining. Overall, our study proposes a promising composite material to fabricate a substrate to support the 3D culture of cancer cells and vascular ingrowth.
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Affiliation(s)
- Caitlin E. Jackson
- The Kroto Research Institute, Materials Science and Engineering, University of Sheffield, Sheffield, United Kingdom
- Insigneo Institute for in Silico Medicine, The Pam Liversidge Building, University of Sheffield, Sheffield, United Kingdom
| | - Iona Doyle
- The Kroto Research Institute, Materials Science and Engineering, University of Sheffield, Sheffield, United Kingdom
| | - Hamood Khan
- The Kroto Research Institute, Materials Science and Engineering, University of Sheffield, Sheffield, United Kingdom
| | - Samuel F. Williams
- Department of Infection, Immunity and Cardiovascular Disease, Royal Hallamshire Hospital, The University of Sheffield, Sheffield, United Kingdom
| | | | | | - Helen E. Bryant
- School of Medicine and Population Health, University of Sheffield, Sheffield, United Kingdom
| | - William R. English
- Norwich Medical School, University of East Anglia, Norwich, United Kingdom
| | - Nicola H. Green
- The Kroto Research Institute, Materials Science and Engineering, University of Sheffield, Sheffield, United Kingdom
- Insigneo Institute for in Silico Medicine, The Pam Liversidge Building, University of Sheffield, Sheffield, United Kingdom
| | - Frederik Claeyssens
- The Kroto Research Institute, Materials Science and Engineering, University of Sheffield, Sheffield, United Kingdom
- Insigneo Institute for in Silico Medicine, The Pam Liversidge Building, University of Sheffield, Sheffield, United Kingdom
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3
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Sengokmen-Ozsoz N, Boston R, Claeyssens F. Correction to "Investigating the Potential of Electroless Nickel Plating for Fabricating Ultra-Porous Metal-Based Lattice Structures Using PolyHIPE Templates". ACS Appl Mater Interfaces 2023; 15. [PMID: 38038653 PMCID: PMC10726303 DOI: 10.1021/acsami.3c16884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Indexed: 12/02/2023]
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4
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Furmidge R, Jackson CE, Velázquez de la Paz MF, Workman VL, Green NH, Reilly GC, Hearnden V, Claeyssens F. Surfactant-free gelatin-stabilised biodegradable polymerised high internal phase emulsions with macroporous structures. Front Chem 2023; 11:1236944. [PMID: 37681209 PMCID: PMC10481965 DOI: 10.3389/fchem.2023.1236944] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 08/10/2023] [Indexed: 09/09/2023] Open
Abstract
High internal phase emulsion (HIPE) templating is a well-established method for the generation of polymeric materials with high porosity (>74%) and degree of interconnectivity. The porosity and pore size can be altered by adjusting parameters during emulsification, which affects the properties of the resulting porous structure. However, there remain challenges for the fabrication of polyHIPEs, including typically small pore sizes (∼20-50 μm) and the use of surfactants, which can limit their use in biological applications. Here, we present the use of gelatin, a natural polymer, during the formation of polyHIPE structures, through the use of two biodegradable polymers, polycaprolactone-methacrylate (PCL-M) and polyglycerol sebacate-methacrylate (PGS-M). When gelatin is used as the internal phase, it is capable of stabilising emulsions without the need for an additional surfactant. Furthermore, by changing the concentration of gelatin within the internal phase, the pore size of the resulting polyHIPE can be tuned. 5% gelatin solution resulted in the largest mean pore size, increasing from 53 μm to 80 μm and 28 μm to 94 µm for PCL-M and PGS-M respectively. In addition, the inclusion of gelatin further increased the mechanical properties of the polyHIPEs and increased the period an emulsion could be stored before polymerisation. Our results demonstrate the potential to use gelatin for the fabrication of surfactant-free polyHIPEs with macroporous structures, with potential applications in tissue engineering, environmental and agricultural industries.
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Affiliation(s)
- Rachel Furmidge
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Insigneo Institute for In Silico Medicine, University of Sheffield, Sheffield, United Kingdom
| | - Caitlin E. Jackson
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Insigneo Institute for In Silico Medicine, University of Sheffield, Sheffield, United Kingdom
| | - María Fernanda Velázquez de la Paz
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Insigneo Institute for In Silico Medicine, University of Sheffield, Sheffield, United Kingdom
| | - Victoria L. Workman
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Insigneo Institute for In Silico Medicine, University of Sheffield, Sheffield, United Kingdom
| | - Nicola H. Green
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Insigneo Institute for In Silico Medicine, University of Sheffield, Sheffield, United Kingdom
| | - Gwendolen C. Reilly
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Insigneo Institute for In Silico Medicine, University of Sheffield, Sheffield, United Kingdom
| | - Vanessa Hearnden
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Insigneo Institute for In Silico Medicine, University of Sheffield, Sheffield, United Kingdom
| | - Frederik Claeyssens
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Insigneo Institute for In Silico Medicine, University of Sheffield, Sheffield, United Kingdom
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5
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Sengokmen-Ozsoz N, Boston R, Claeyssens F. Investigating the Potential of Electroless Nickel Plating for Fabricating Ultra-Porous Metal-Based Lattice Structures Using PolyHIPE Templates. ACS Appl Mater Interfaces 2023; 15:30769-30779. [PMID: 37310213 PMCID: PMC10316321 DOI: 10.1021/acsami.3c04637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/31/2023] [Indexed: 06/14/2023]
Abstract
The use of polymerized high internal phase emulsions (polyHIPEs) as templates for electroless nickel plating is a promising method for producing ultra-porous metallic lattice structures with consistent wall thickness. These structures have desirable properties such as low density, high specific strength, resilience, and absorbency, making them suitable for various applications including battery electrodes, catalyst supports, and acoustic or vibration damping. This study aimed to optimize and investigate the electroless nickel plating process on polyHIPEs. Initially, a surfactant (Hypermer)-stabilized water-in-oil emulsion based on 2-ethylhexyl-acrylate and isobornyl-acrylate was used as a 3D printing resin to create polyHIPE structures. Then, the electroless nickel plating process was optimized using polyHIPE discs. The study also examined the effects of air, argon, and reducing atmospheres during the heating process to remove the polyHIPE template using metallized 3D-printed polyHIPE lattice structures. The findings indicated that different atmospheres led to the formation of distinct compounds. While nickel-coated polyHIPEs were fully oxidized in an air atmosphere, nickel phosphide (Ni3P) structures occurred in argon and reducing atmospheres along Ni metal. Moreover, in argon and reducing atmospheres, the porous structure of the polyHIPEs was retained as the internal structure was completely carbonized. Overall, the study demonstrated that intricate polyHIPE structures can be used as templates to create ultra-porous metal-based lattices for a wide range of applications.
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Affiliation(s)
- Nihan Sengokmen-Ozsoz
- Kroto
Research Institute, Department of Materials Science and Engineering, The University of Sheffield, Sheffield S3 7HQ, United Kingdom
| | - R. Boston
- Department
of Materials Science and Engineering, The
University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Frederik Claeyssens
- Kroto
Research Institute, Department of Materials Science and Engineering, The University of Sheffield, Sheffield S3 7HQ, United Kingdom
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Singh D, Lindsay S, Gurbaxani S, Crawford A, Claeyssens F. Elastomeric Porous Poly(glycerol sebacate) Methacrylate (PGSm) Microspheres as 3D Scaffolds for Chondrocyte Culture and Cartilage Tissue Engineering. Int J Mol Sci 2023; 24:10445. [PMID: 37445620 DOI: 10.3390/ijms241310445] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/12/2023] [Accepted: 06/16/2023] [Indexed: 07/15/2023] Open
Abstract
Cartilage defects can be difficult to treat; therefore, tissue engineering of cartilage is emerging as a promising potential therapy. One interesting area of research explores the delivery of cells to the cartilage defect via scaffold-based cell delivery vehicles and microsurgery. This study explores the use of novel poly(glycerol sebacate) methacrylate (PGSm)-polymerised high internal phase emulsion (polyHIPE) microspheres as scaffolds with embedded cells for cartilage tissue engineering. Porous microsphere scaffolds (100 µm-1 mm diameter) were produced from emulsions consisting of water and a methacrylate-based photocurable resin of poly(glycerol sebacate). These resins were used in conjunction with a T-junction fluidic device and an ultraviolet (UV) curing lamp to produce porous microspheres with a tuneable size. This technique produced biodegradable PGSm microspheres with similar mechanical properties to cartilage. We further explore these microspheres as scaffolds for three-dimensional culture of chondrocytes. The microspheres proved to be very efficient scaffolds for primary chondrocyte culture and were covered by a dense extracellular matrix (ECM) network during the culture period, creating a tissue disk. The presence of glycosaminoglycans (GAGs) and collagen-II was confirmed, highlighting the utility of the PGSm microspheres as a delivery vehicle for chondrocytes. A number of imaging techniques were utilised to analyse the tissue disk and develop methodologies to characterise the resultant tissue. This study highlights the utility of porous PGSm microspheres for cartilage tissue engineering.
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Affiliation(s)
- Dharaminder Singh
- Kroto Research Institute, Department of Materials Science and Engineering, The University of Sheffield, Broad Lane, Sheffield S3 7HQ, UK
| | - Sarah Lindsay
- School of Clinical Dentistry, The University of Sheffield, Claremont Crescent, Sheffield S10 2TN, UK
| | - Shruti Gurbaxani
- School of Clinical Dentistry, The University of Sheffield, Claremont Crescent, Sheffield S10 2TN, UK
| | - Aileen Crawford
- School of Clinical Dentistry, The University of Sheffield, Claremont Crescent, Sheffield S10 2TN, UK
| | - Frederik Claeyssens
- Kroto Research Institute, Department of Materials Science and Engineering, The University of Sheffield, Broad Lane, Sheffield S3 7HQ, UK
- Insigneo Institute for in Silico Medicine, The University of Sheffield, Sheffield S10 2TN, UK
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7
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Aldemir Dikici B, Chen MC, Dikici S, Chiu HC, Claeyssens F. In Vivo Bone Regeneration Capacity of Multiscale Porous Polycaprolactone-Based High Internal Phase Emulsion (PolyHIPE) Scaffolds in a Rat Calvarial Defect Model. ACS Appl Mater Interfaces 2023. [PMID: 37253168 DOI: 10.1021/acsami.3c04362] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Globally, one of the most common tissue transplantation procedures is bone grafting. Lately, we have reported the development of polymerized high internal phase emulsions (PolyHIPEs) made of photocurable polycaprolactone (4PCLMA) and shown their potential to be used as bone tissue engineering scaffolds in vitro. However, it is essential to evaluate the in vivo performance of these scaffolds to investigate their potential in a clinically more relevant manner. Therefore, in this study, we aimed to compare in vivo performances of macroporous (fabricated using stereolithography), microporous (fabricated using emulsion templating), and multiscale porous (fabricated using emulsion templating and perforation) scaffolds made of 4PCLMA. Also, 3D-printed macroporous scaffolds (fabricated using fused deposition modeling) made of thermoplastic polycaprolactone were used as a control. Scaffolds were implanted into a critical-sized calvarial defect, animals were sacrificed 4 or 8 weeks after implantation, and the new bone formation was assessed by micro-computed tomography, dental radiography, and histology. Multiscale porous scaffolds that include both micro- and macropores resulted in higher bone regeneration in the defect area compared to only macroporous or only microporous scaffolds. When one-grade porous scaffolds were compared, microporous scaffolds showed better performance than macroporous scaffolds in terms of mineralized bone volume and tissue regeneration. Micro-CT results revealed that while bone volume/tissue volume (Bv/Tv) values were 8 and 17% at weeks 4 and 8 for macroporous scaffolds, they were significantly higher for microporous scaffolds, with values of 26 and 33%, respectively. Taken together, the results reported in this study showed the potential application of multiscale PolyHIPE scaffolds, in particular, as a promising material for bone regeneration.
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Affiliation(s)
- Betül Aldemir Dikici
- Department of Bioengineering, Izmir Institute of Technology, Urla, Izmir 35433, Turkey
| | - Min-Chia Chen
- Department of Periodontology, School of Dentistry, National Defense Medical Center and Tri-Service General Hospital, Taipei 114, Taiwan, ROC
- Private Dental Clinic of New Taipei City, Taipei 220, Taiwan, ROC
| | - Serkan Dikici
- Department of Bioengineering, Izmir Institute of Technology, Urla, Izmir 35433, Turkey
| | - Hsien-Chung Chiu
- Department of Periodontology, School of Dentistry, National Defense Medical Center and Tri-Service General Hospital, Taipei 114, Taiwan, ROC
| | - Frederik Claeyssens
- Kroto Research Institute, Department of Materials Science and Engineering, University of Sheffield, Sheffield S37HQ, United Kingdom
- INSIGNEO Institute for In Silico Medicine, Department of Materials Science and Engineering, University of Sheffield, Sheffield S13JD, United Kingdom
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8
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Jackson CE, Ramos-Rodriguez DH, Farr NTH, English WR, Green NH, Claeyssens F. Development of PCL PolyHIPE Substrates for 3D Breast Cancer Cell Culture. Bioengineering (Basel) 2023; 10:bioengineering10050522. [PMID: 37237592 DOI: 10.3390/bioengineering10050522] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/12/2023] [Accepted: 04/23/2023] [Indexed: 05/28/2023] Open
Abstract
Cancer is a becoming a huge social and economic burden on society, becoming one of the most significant barriers to life expectancy in the 21st century. In particular, breast cancer is one of the leading causes of death for women. One of the most significant difficulties to finding efficient therapies for specific cancers, such as breast cancer, is the efficiency and ease of drug development and testing. Tissue-engineered (TE) in vitro models are rapidly developing as an alternative to animal testing for pharmaceuticals. Additionally, porosity included within these structures overcomes the diffusional mass transfer limit whilst enabling cell infiltration and integration with surrounding tissue. Within this study, we investigated the use of high-molecular-weight polycaprolactone methacrylate (PCL-M) polymerised high-internal-phase emulsions (polyHIPEs) as a scaffold to support 3D breast cancer (MDA-MB-231) cell culture. We assessed the porosity, interconnectivity, and morphology of the polyHIPEs when varying mixing speed during formation of the emulsion, successfully demonstrating the tunability of these polyHIPEs. An ex ovo chick chorioallantoic membrane assay identified the scaffolds as bioinert, with biocompatible properties within a vascularised tissue. Furthermore, in vitro assessment of cell attachment and proliferation showed promising potential for the use of PCL polyHIPEs to support cell growth. Our results demonstrate that PCL polyHIPEs are a promising material to support cancer cell growth with tuneable porosity and interconnectivity for the fabrication of perfusable 3D cancer models.
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Affiliation(s)
- Caitlin E Jackson
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK
- Insigneo Institute for In Silico Medicine, The Pam Liversidge Building, University of Sheffield, Sheffield S1 3JD, UK
| | | | - Nicholas T H Farr
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK
- Insigneo Institute for In Silico Medicine, The Pam Liversidge Building, University of Sheffield, Sheffield S1 3JD, UK
| | - William R English
- Norwich Medical School, University of East Anglia, Norwich NR3 7TJ, UK
| | - Nicola H Green
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK
- Insigneo Institute for In Silico Medicine, The Pam Liversidge Building, University of Sheffield, Sheffield S1 3JD, UK
| | - Frederik Claeyssens
- Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK
- Insigneo Institute for In Silico Medicine, The Pam Liversidge Building, University of Sheffield, Sheffield S1 3JD, UK
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9
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Taylor CS, Behbehani M, Glen A, Basnett P, Gregory DA, Lukasiewicz BB, Nigmatullin R, Claeyssens F, Roy I, Haycock JW. Aligned Polyhydroxyalkanoate Blend Electrospun Fibers as Intraluminal Guidance Scaffolds for Peripheral Nerve Repair. ACS Biomater Sci Eng 2023; 9:1472-1485. [PMID: 36848250 PMCID: PMC10015431 DOI: 10.1021/acsbiomaterials.2c00964] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 02/02/2023] [Indexed: 03/01/2023]
Abstract
The use of nerve guidance conduits (NGCs) to treat peripheral nerve injuries is a favorable approach to the current "gold standard" of autografting. However, as simple hollow tubes, they lack specific topographical and mechanical guidance cues present in nerve grafts and therefore are not suitable for treating large gap injuries (30-50 mm). The incorporation of intraluminal guidance scaffolds, such as aligned fibers, has been shown to increase neuronal cell neurite outgrowth and Schwann cell migration distances. A novel blend of PHAs, P(3HO)/P(3HB) (50:50), was investigated for its potential as an intraluminal aligned fiber guidance scaffold. Aligned fibers of 5 and 8 μm diameter were manufactured by electrospinning and characterized using SEM. Fibers were investigated for their effect on neuronal cell differentiation, Schwann cell phenotype, and cell viability in vitro. Overall, P(3HO)/P(3HB) (50:50) fibers supported higher neuronal and Schwann cell adhesion compared to PCL fibers. The 5 μm PHA blend fibers also supported significantly higher DRG neurite outgrowth and Schwann cell migration distance using a 3D ex vivo nerve injury model.
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Affiliation(s)
- Caroline S. Taylor
- Department
of Materials Science & and Engineering, The University of Sheffield, Sheffield S3 7HQ, United Kingdom
| | - Mehri Behbehani
- The
Electrospinning Company, Unit 5, Zephyr Building, Eighth St., Harwell Campus,
Harwell, Didcot OX11 0RL, United Kingdom
| | - Adam Glen
- Department
of Materials Science & and Engineering, The University of Sheffield, Sheffield S3 7HQ, United Kingdom
| | - Pooja Basnett
- School
of Life Sciences, College of Liberal Arts and Sciences, University of Westminster, London W1B 2HW, United Kingdom
| | - David A. Gregory
- Department
of Materials Science & and Engineering, The University of Sheffield, Sheffield S3 7HQ, United Kingdom
| | - Barbara B. Lukasiewicz
- School
of Life Sciences, College of Liberal Arts and Sciences, University of Westminster, London W1B 2HW, United Kingdom
| | - Rinat Nigmatullin
- School
of Life Sciences, College of Liberal Arts and Sciences, University of Westminster, London W1B 2HW, United Kingdom
| | - Frederik Claeyssens
- Department
of Materials Science & and Engineering, The University of Sheffield, Sheffield S3 7HQ, United Kingdom
| | - Ipsita Roy
- Department
of Materials Science & and Engineering, The University of Sheffield, Sheffield S3 7HQ, United Kingdom
| | - John W. Haycock
- Department
of Materials Science & and Engineering, The University of Sheffield, Sheffield S3 7HQ, United Kingdom
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10
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Aleemardani M, Trikić MZ, Green NH, Claeyssens F. Elastomeric, bioadhesive and pH-responsive amphiphilic copolymers based on direct crosslinking of poly(glycerol sebacate)- co-polyethylene glycol. Biomater Sci 2022; 10:7015-7031. [PMID: 36342181 DOI: 10.1039/d2bm01335e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Poly(glycerol sebacate) (PGS), a synthetic biorubber, is characterised by its biocompatibility, high elasticity and tunable mechanical properties; however, its inherent hydrophobicity and insolubility in water make it unsuitable for use in advanced biomaterials like hydrogels fabrication. Here, we developed new hydrophilic PGS-based copolymers that enable hydrogel formation through use of two different types of polyethylene glycol (PEG), polyethylene glycol (PEG2) or glycerol ethoxylate (PEG3), combined at different ratios. A two-step polycondensation reaction was used to produce poly(glycerol sebacate)-co-polyethylene glycol (PGS-co-PEG) copolymers that were then crosslinked thermally without the use of initiators or crosslinkers, resulting in PGS-co-PEG2 and PGS-co-PEG3 amphiphilic polymers. It has been illustrated that the properties of PGS-co-PEG copolymers can be controlled by altering the type and amount of PEG. PGS-co-PEG copolymers containing PEG ≥ 40% showed high swelling, flexibility, stretching, bioadhesion and biocompatibility, and good enzymatic degradation and mechanical properties. Also, the addition of PEG created hydrogels that demonstrated pH-responsive behaviours, which can be used for bioapplications requiring responding to physicochemical dynamics. Interestingly, PGS-co-40PEG2 and PGS-co-60PEG3 had the highest shear strengths, 340.4 ± 49.7 kPa and 336.0 ± 35.1 kPa, and these are within the range of commercially available sealants or bioglues. Due to the versatile multifunctionalities of these new copolymer hydrogels, they can have great potential in soft tissue engineering and biomedicine.
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Affiliation(s)
- Mina Aleemardani
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK. .,Insigneo Institute for in Silico Medicine, The Pam Liversidge Building, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, UK
| | - Michael Zivojin Trikić
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK.
| | - Nicola Helen Green
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK. .,Insigneo Institute for in Silico Medicine, The Pam Liversidge Building, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, UK
| | - Frederik Claeyssens
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK. .,Insigneo Institute for in Silico Medicine, The Pam Liversidge Building, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, UK
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11
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Maksoud FJ, Velázquez de la Paz MF, Hann AJ, Thanarak J, Reilly GC, Claeyssens F, Green NH, Zhang YS. Porous biomaterials for tissue engineering: a review. J Mater Chem B 2022; 10:8111-8165. [PMID: 36205119 DOI: 10.1039/d1tb02628c] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The field of biomaterials has grown rapidly over the past decades. Within this field, porous biomaterials have played a remarkable role in: (i) enabling the manufacture of complex three-dimensional structures; (ii) recreating mechanical properties close to those of the host tissues; (iii) facilitating interconnected structures for the transport of macromolecules and cells; and (iv) behaving as biocompatible inserts, tailored to either interact or not with the host body. This review outlines a brief history of the development of biomaterials, before discussing current materials proposed for use as porous biomaterials and exploring the state-of-the-art in their manufacture. The wide clinical applications of these materials are extensively discussed, drawing on specific examples of how the porous features of such biomaterials impact their behaviours, as well as the advantages and challenges faced, for each class of the materials.
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Affiliation(s)
- Fouad Junior Maksoud
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, USA.
| | - María Fernanda Velázquez de la Paz
- Department of Materials Science and Engineering, Kroto Research Building, North Campus, Broad Lane, University of Sheffield, Sheffield, S3 7HQ, UK.
| | - Alice J Hann
- Department of Materials Science and Engineering, Kroto Research Building, North Campus, Broad Lane, University of Sheffield, Sheffield, S3 7HQ, UK.
| | - Jeerawan Thanarak
- Department of Materials Science and Engineering, Kroto Research Building, North Campus, Broad Lane, University of Sheffield, Sheffield, S3 7HQ, UK.
| | - Gwendolen C Reilly
- Department of Materials Science and Engineering, Kroto Research Building, North Campus, Broad Lane, University of Sheffield, Sheffield, S3 7HQ, UK. .,INSIGNEO Institute for in silico Medicine, University of Sheffield, S3 7HQ, UK
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, Kroto Research Building, North Campus, Broad Lane, University of Sheffield, Sheffield, S3 7HQ, UK. .,INSIGNEO Institute for in silico Medicine, University of Sheffield, S3 7HQ, UK
| | - Nicola H Green
- Department of Materials Science and Engineering, Kroto Research Building, North Campus, Broad Lane, University of Sheffield, Sheffield, S3 7HQ, UK. .,INSIGNEO Institute for in silico Medicine, University of Sheffield, S3 7HQ, UK
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, USA.
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12
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Durgut E, Sherborne C, Aldemir Dikici B, Reilly GC, Claeyssens F. Preparation of Interconnected Pickering Polymerized High Internal Phase Emulsions by Arrested Coalescence. Langmuir 2022; 38:10953-10962. [PMID: 36027593 PMCID: PMC9476866 DOI: 10.1021/acs.langmuir.2c01243] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 08/17/2022] [Indexed: 06/15/2023]
Abstract
Emulsion templating is a method that enables the production of highly porous and interconnected polymer foams called polymerized high internal phase emulsions (PolyHIPEs). Since emulsions are inherently unstable systems, they can be stabilized either by surfactants or by particles (Pickering HIPEs). Surfactant-stabilized HIPEs form materials with an interconnected porous structure, while Pickering HIPEs typically form closed pore materials. In this study, we describe a system that uses submicrometer polymer particles to stabilize the emulsions. Polymers fabricated from these Pickering emulsions exhibit, unlike traditional Pickering emulsions, highly interconnected large pore structures, and we related these structures to arrested coalescence. We describe in detail the morphological properties of this system and their dependence on different production parameters. This production method might provide an interesting alternative to poly-surfactant-stabilized-HIPEs, in particular where the application necessitates large pore structures.
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Affiliation(s)
- Enes Durgut
- Kroto
Research Institute, Department of Materials Science and Engineering, University of Sheffield, Sheffield S10 2TN, United Kingdom
- Department
of Materials Science and Engineering, INSIGNEO Institute for in Silico
Medicine, The University of Sheffield, Sheffield S10 2TN, United Kingdom
| | - Colin Sherborne
- Kroto
Research Institute, Department of Materials Science and Engineering, University of Sheffield, Sheffield S10 2TN, United Kingdom
| | - Betül Aldemir Dikici
- Department
of Bioengineering, Izmir Institute of Technology, Urla, Izmir, 35433, Turkey
| | - Gwendolen C. Reilly
- Kroto
Research Institute, Department of Materials Science and Engineering, University of Sheffield, Sheffield S10 2TN, United Kingdom
- Department
of Materials Science and Engineering, INSIGNEO Institute for in Silico
Medicine, The University of Sheffield, Sheffield S10 2TN, United Kingdom
| | - Frederik Claeyssens
- Kroto
Research Institute, Department of Materials Science and Engineering, University of Sheffield, Sheffield S10 2TN, United Kingdom
- Department
of Materials Science and Engineering, INSIGNEO Institute for in Silico
Medicine, The University of Sheffield, Sheffield S10 2TN, United Kingdom
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13
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Rattanawonsakul K, Bullock G, Bolt R, Claeyssens F, Atkins S, Hearnden V. In vitro Effect of Geranylgeraniol (GGOH) on Bisphosphonate-Induced Cytotoxicity of Oral Mucosa Cells. Front Oral Health 2022; 3:892615. [PMID: 35795156 PMCID: PMC9251184 DOI: 10.3389/froh.2022.892615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 05/20/2022] [Indexed: 11/17/2022] Open
Abstract
Medication-related osteonecrosis of the jaw (MRONJ) is an often-severe complication found in patients receiving bisphosphonates in the management of Paget's, osteoporosis and metastatic bone cancer. Mucosal breakdown with bone exposure is a primary clinical presentation of MRONJ linked to the inhibitory effect of nitrogen-containing bisphosphonates (N-BP) on the mevalonate pathway. Geranylgeraniol (GGOH) has demonstrated a rescue effect on N-BP-treated osteoclasts but the biological effects on oral soft tissues and cells remain unclear. This study aimed to determine whether GGOH could prevent bisphosphonate induced toxicity to oral mucosa cells in vitro. Primary oral fibroblasts and keratinocytes were exposed to different GGOH concentrations or GGOH in combination with two nitrogen-containing bisphosphonates, zoledronic acid (ZA) or pamidronic acid (PA), for 72 h. The metabolic activity of each cell type was measured using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. GGOH without bisphosphonates significantly reduced the metabolic activity of oral mucosa cells. Fibroblasts treated with GGOH and ZA in combination showed a slight increase in metabolic status compared to fibroblasts treated with ZA alone, however this positive effect was not observed in keratinocytes. In the presence of PA, GGOH was unable to increase the metabolic activity of either cell type. These findings demonstrate that GGOH is toxic to oral mucosa cells and that GGOH was not able to prevent bisphosphonate induced toxicity. These data show that GGOH does not have therapeutic potential for bisphosphonate-induced soft tissue toxicity in MRONJ and the use of GGOH as an MRONJ treatment should be strongly reconsidered.
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Affiliation(s)
- Krit Rattanawonsakul
- Department of Materials Science and Engineering, The University of Sheffield, Sheffield, United Kingdom
| | - George Bullock
- School of Clinical Dentistry, The University of Sheffield, Sheffield, United Kingdom
- *Correspondence: George Bullock
| | - Robert Bolt
- School of Clinical Dentistry, The University of Sheffield, Sheffield, United Kingdom
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, The University of Sheffield, Sheffield, United Kingdom
| | - Simon Atkins
- School of Clinical Dentistry, The University of Sheffield, Sheffield, United Kingdom
| | - Vanessa Hearnden
- Department of Materials Science and Engineering, The University of Sheffield, Sheffield, United Kingdom
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14
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Mullins L, Assmus A, Sherbourne C, Early J, Claeyssens F, Haycock J, Hunter R, Mullins J. Dynamic Compartmentalisation of Intracellular Sodium in Collecting Duct Cells. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.l8003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Linda Mullins
- Cardiovascular Science CentreQueen's Medical Research Institute, University of EdinburghEdinburgh
| | - Adrienne Assmus
- Cardiovascular Science CentreQueen's Medical Research Institute, University of EdinburghEdinburgh
| | | | | | | | | | - Robert Hunter
- Cardiovascular Science CentreQueen's Medical Research Institute, University of EdinburghEdinburgh
| | - John Mullins
- Cardiovascular Science CentreQueen's Medical Research Institute, University of EdinburghEdinburgh
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15
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Becerril-Rodriguez IC, Claeyssens F. Low methacrylated poly (glycerol sebacate) for soft tissue engineering. Polym Chem 2022. [DOI: 10.1039/d2py00212d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tissue engineering for soft tissue has made great advances in recent years, though there are still challenges to overcome. The main problem is that autologous tissue implants have not given...
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16
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Aguilar Cosme JR, Gagui DC, Bryant HE, Claeyssens F. Morphological Response in Cancer Spheroids for Screening Photodynamic Therapy Parameters. Front Mol Biosci 2021; 8:784962. [PMID: 34869604 PMCID: PMC8637197 DOI: 10.3389/fmolb.2021.784962] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 11/01/2021] [Indexed: 11/20/2022] Open
Abstract
Photodynamic therapy (PDT) is a treatment which uses light-activated compounds to produce reactive oxygen species, leading to membrane damage and cell death. Multicellular cancer spheroids are a preferable alternative for PDT evaluation in comparison to monolayer cell cultures due to their ability to better mimic in vivo avascular tumour characteristics such as hypoxia and cell-cell interactions, low cost, and ease of production. However, inconsistent growth kinetics and drug responsiveness causes poor experimental reproducibility and limits their usefulness. Herein, we used image analysis to establish a link between human melanoma C8161 spheroid morphology and drug responsiveness. Spheroids were pre-selected based on sphericity, area, and diameter, reducing variation in experimental groups before treatment. Spheroid morphology after PDT was analyzed using AnaSP and ReViSP, MATLAB-based open-source software, obtaining nine different parameters. Spheroids displayed a linear response between biological assays and morphology, with area (R2 = 0.7219) and volume (R2 = 0.6138) showing the best fit. Sphericity, convexity, and solidity were confirmed as poor standalone indicators of spheroid viability. Our results indicate spheroid morphometric parameters can be used to accurately screen inefficient treatment combinations of novel compounds.
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Affiliation(s)
- Jose R Aguilar Cosme
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom.,INSIGNEO Institute for in Silico Medicine, University of Sheffield, Sheffield, United Kingdom
| | - Dan C Gagui
- INSIGNEO Institute for in Silico Medicine, University of Sheffield, Sheffield, United Kingdom.,Department of Oncology and Metabolism, The Medical School, University of Sheffield, Sheffield, United Kingdom
| | - Helen E Bryant
- Department of Oncology and Metabolism, The Medical School, University of Sheffield, Sheffield, United Kingdom
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom.,INSIGNEO Institute for in Silico Medicine, University of Sheffield, Sheffield, United Kingdom
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17
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Aguilar Cosme JR, Gagui DC, Green NH, Bryant HE, Claeyssens F. In Vitro Low-Fluence Photodynamic Therapy Parameter Screening Using 3D Tumor Spheroids Shows that Fractionated Light Treatments Enhance Phototoxicity. ACS Biomater Sci Eng 2021; 7:5078-5089. [PMID: 34615346 DOI: 10.1021/acsbiomaterials.1c00690] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The evaluation of novel photosensitizers (PSs) for photodynamic therapy (PDT) is difficult due to the limitations of two-dimensional cell culture and multiple parameters (dose, light intensity, uptake time), which complicate progression to in vivo experiments and clinical translation. Three-dimensional (3D) cell culture models like multicellular cancer tumor spheroids (MCTS) show great similarities to in vivo avascular tumor conditions, improving the speed and accuracy of screening novel compounds with various treatment combinations. In this study, we utilize C8161 human melanoma spheroids to screen PDT treatment combinations using protoporphyrin IX (PpIX) and drug-loaded carbon dot (CD) conjugates PpIX-CD and PpIX@CD at ultralow fluence values (<10 J/cm2). Conjugates show equivalent light-induced damage to PpIX from 1 μg/mL with significantly less dark cytotoxicity up to 72 h after exposure, shown by LDH release and dsDNA content. Fractionated treatments, carried out by dividing light exposure with 24 h intervals, demonstrate an enhanced PDT effect compared to single exposure at equal concentrations. Light sheet fluorescence microscopy combined with live/dead staining demonstrates that spheroids sustain extensive damage after PDT, with PpIX and PpIX-CD showing improved uptake compared to PpIX@CD. We show that PDT parameter screening can be carried out using a low-cost and convenient combination of assays to improve the efficiency of evaluating novel compounds.
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Affiliation(s)
- Jose R Aguilar Cosme
- University of Sheffield, Department of Materials Science and Engineering, Kroto Research Institute, Red Hill, Sheffield S3 7HQ, United Kingdom.,INSIGNEO Institute for In Silico Medicine, University of Sheffield, Pam Liversidge Building, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Dan C Gagui
- Department of Oncology and Metabolism, The Medical School, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, United Kingdom.,INSIGNEO Institute for In Silico Medicine, University of Sheffield, Pam Liversidge Building, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Nicola H Green
- University of Sheffield, Department of Materials Science and Engineering, Kroto Research Institute, Red Hill, Sheffield S3 7HQ, United Kingdom.,INSIGNEO Institute for In Silico Medicine, University of Sheffield, Pam Liversidge Building, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Helen E Bryant
- Department of Oncology and Metabolism, The Medical School, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, United Kingdom
| | - Frederik Claeyssens
- University of Sheffield, Department of Materials Science and Engineering, Kroto Research Institute, Red Hill, Sheffield S3 7HQ, United Kingdom.,INSIGNEO Institute for In Silico Medicine, University of Sheffield, Pam Liversidge Building, Mappin Street, Sheffield S1 3JD, United Kingdom
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18
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Aldemir Dikici B, Malayeri A, Sherborne C, Dikici S, Paterson T, Dew L, Hatton P, Ortega Asencio I, MacNeil S, Langford C, Cameron NR, Claeyssens F. Thiolene- and Polycaprolactone Methacrylate-Based Polymerized High Internal Phase Emulsion (PolyHIPE) Scaffolds for Tissue Engineering. Biomacromolecules 2021; 23:720-730. [PMID: 34730348 DOI: 10.1021/acs.biomac.1c01129] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Highly porous emulsion templated polymers (PolyHIPEs) provide a number of potential advantages in the fabrication of scaffolds for tissue engineering and regenerative medicine. Porosity enables cell ingrowth and nutrient diffusion within, as well as waste removal from, the scaffold. The properties offered by emulsion templating alone include the provision of high interconnected porosity, and, in combination with additive manufacturing, the opportunity to introduce controlled multiscale porosity to complex or custom structures. However, the majority of monomer systems reported for PolyHIPE preparation are unsuitable for clinical applications as they are nondegradable. Thiol-ene chemistry is a promising route to produce biodegradable photocurable PolyHIPEs for the fabrication of scaffolds using conventional or additive manufacturing methods; however, relatively little research has been reported on this approach. This study reports the groundwork to fabricate thiol- and polycaprolactone (PCL)-based PolyHIPE materials via a photoinitiated thiolene click reaction. Two different formulations, either three-arm PCL methacrylate (3PCLMA) or four-arm PCL methacrylate (4PCLMA) moieties, were used in the PolyHIPE formulation. Biocompatibility of the PolyHIPEs was investigated using human dermal fibroblasts (HDFs) and human osteosarcoma cell line (MG-63) by DNA quantification assay, and developed PolyHIPEs were shown to be capable of supporting cell attachment and viability.
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Affiliation(s)
- Betül Aldemir Dikici
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield S3 7HQ, United Kingdom.,Department of Materials Science and Engineering, INSIGNEO Institute for In Silico Medicine, University of Sheffield, The Pam Liversidge Building, Sheffield S1 3JD, United Kingdom.,Department of Bioengineering, Izmir Institute of Technology, Urla, Izmir 35433, Turkey
| | - Atra Malayeri
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield S3 7HQ, United Kingdom
| | - Colin Sherborne
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield S3 7HQ, United Kingdom
| | - Serkan Dikici
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield S3 7HQ, United Kingdom.,Department of Bioengineering, Izmir Institute of Technology, Urla, Izmir 35433, Turkey
| | - Thomas Paterson
- School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, United Kingdom
| | - Lindsey Dew
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield S3 7HQ, United Kingdom
| | - Paul Hatton
- School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, United Kingdom
| | - Ilida Ortega Asencio
- School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, United Kingdom
| | - Sheila MacNeil
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield S3 7HQ, United Kingdom
| | - Caitlin Langford
- Department of Materials Science and Engineering, Monash University, 22 Alliance Lane, Clayton, VIC 3800, Australia
| | - Neil R Cameron
- Department of Materials Science and Engineering, Monash University, 22 Alliance Lane, Clayton, VIC 3800, Australia.,School of Engineering, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield S3 7HQ, United Kingdom.,Department of Materials Science and Engineering, INSIGNEO Institute for In Silico Medicine, University of Sheffield, The Pam Liversidge Building, Sheffield S1 3JD, United Kingdom
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19
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Dikici S, Aldemir Dikici B, MacNeil S, Claeyssens F. Decellularised extracellular matrix decorated PCL PolyHIPE scaffolds for enhanced cellular activity, integration and angiogenesis. Biomater Sci 2021; 9:7297-7310. [PMID: 34617526 PMCID: PMC8547328 DOI: 10.1039/d1bm01262b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Wound healing involves a complex series of events where cell–cell and cell-extracellular matrix (ECM) interactions play a key role. Wounding can be simple, such as the loss of the epithelial integrity, or deeper and more complex, reaching to subcutaneous tissues, including blood vessels, muscles and nerves. Rapid neovascularisation of the wounded area is crucial for wound healing as it has a key role in supplying oxygen and nutrients during the highly demanding proliferative phase and transmigration of inflammatory cells to the wound area. One approach to circumvent delayed neovascularisation is the exogenous use of pro-angiogenic factors, which is expensive, highly dose-dependent, and the delivery of them requires a very well-controlled system to avoid leaky, highly permeable and haemorrhagic blood vessel formation. In this study, we decorated polycaprolactone (PCL)-based polymerised high internal phase emulsion (PolyHIPE) scaffolds with fibroblast-derived ECM to assess fibroblast, endothelial cell and keratinocyte activity in vitro and angiogenesis in ex ovo chick chorioallantoic membrane (CAM) assays. Our results showed that the inclusion of ECM in the scaffolds increased the metabolic activity of three types of cells that play a key role in wound healing and stimulated angiogenesis in ex ovo CAM assays over 7 days. Herein, we demonstrated that fibroblast-ECM functionalised PCL PolyHIPE scaffolds appear to have great potential to be used as an active wound dressing to promote angiogenesis and wound healing. Decellularisation of in vitro generated extracellular matrix (ECM) provides an effective way to stimulate angiogenesis and wound healing.![]()
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Affiliation(s)
- Serkan Dikici
- Department of Bioengineering, Izmir Institute of Technology, Izmir, 35430, Turkey. .,Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield, S3 7HQ, UK.
| | - Betül Aldemir Dikici
- Department of Bioengineering, Izmir Institute of Technology, Izmir, 35430, Turkey. .,Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield, S3 7HQ, UK.
| | - Sheila MacNeil
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield, S3 7HQ, UK.
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield, S3 7HQ, UK.
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20
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Aleemardani M, Trikić MZ, Green NH, Claeyssens F. The Importance of Mimicking Dermal-Epidermal Junction for Skin Tissue Engineering: A Review. Bioengineering (Basel) 2021; 8:bioengineering8110148. [PMID: 34821714 PMCID: PMC8614934 DOI: 10.3390/bioengineering8110148] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/14/2021] [Accepted: 10/16/2021] [Indexed: 12/11/2022] Open
Abstract
There is a distinct boundary between the dermis and epidermis in the human skin called the basement membrane, a dense collagen network that creates undulations of the dermal-epidermal junction (DEJ). The DEJ plays multiple roles in skin homeostasis and function, namely, enhancing the adhesion and physical interlock of the layers, creating niches for epidermal stem cells, regulating the cellular microenvironment, and providing a physical boundary layer between fibroblasts and keratinocytes. However, the primary role of the DEJ has been determined as skin integrity; there are still aspects of it that are poorly investigated. Tissue engineering (TE) has evolved promising skin regeneration strategies and already developed TE scaffolds for clinical use. However, the currently available skin TE equivalents neglect to replicate the DEJ anatomical structures. The emergent ability to produce increasingly complex scaffolds for skin TE will enable the development of closer physical and physiological mimics to natural skin; it also allows researchers to study the DEJ effect on cell function. Few studies have created patterned substrates that could mimic the human DEJ to explore their significance. Here, we first review the DEJ roles and then critically discuss the TE strategies to create the DEJ undulating structure and their effects. New approaches in this field could be instrumental for improving bioengineered skin substitutes, creating 3D engineered skin, identifying pathological mechanisms, and producing and screening drugs.
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Affiliation(s)
- Mina Aleemardani
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK; (M.A.); (M.Z.T.); (N.H.G.)
| | - Michael Zivojin Trikić
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK; (M.A.); (M.Z.T.); (N.H.G.)
| | - Nicola Helen Green
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK; (M.A.); (M.Z.T.); (N.H.G.)
- Insigneo Institute for in Silico Medicine, The Pam Liversidge Building, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, UK
| | - Frederik Claeyssens
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK; (M.A.); (M.Z.T.); (N.H.G.)
- Correspondence:
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21
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Ramos-Rodriguez DH, MacNeil S, Claeyssens F, Ortega Asencio I. Delivery of Bioactive Compounds to Improve Skin Cell Responses on Microfabricated Electrospun Microenvironments. Bioengineering (Basel) 2021; 8:105. [PMID: 34436108 PMCID: PMC8389211 DOI: 10.3390/bioengineering8080105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/15/2021] [Accepted: 07/22/2021] [Indexed: 12/05/2022] Open
Abstract
The introduction of microtopographies within biomaterial devices is a promising approach that allows one to replicate to a degree the complex native environment in which human cells reside. Previously, our group showed that by combining electrospun fibers and additive manufacturing it is possible to replicate to an extent the stem cell microenvironment (rete ridges) located between the epidermal and dermal layers. Our group has also explored the use of novel proangiogenic compounds to improve the vascularization of skin constructs. Here, we combine our previous approaches to fabricate innovative polycaprolactone fibrous microtopographical scaffolds loaded with bioactive compounds (2-deoxy-D-ribose, 17β-estradiol, and aloe vera). Metabolic activity assay showed that microstructured scaffolds can be used to deliver bioactive agents and that the chemical relation between the working compound and the electrospinning solution is critical to replicate as much as possible the targeted morphologies. We also reported that human skin cell lines have a dose-dependent response to the bioactive compounds and that their inclusion has the potential to improve cell activity, induce blood vessel formation and alter the expression of relevant epithelial markers (collagen IV and integrin β1). In summary, we have developed fibrous matrixes containing synthetic rete-ridge-like structures that can deliver key bioactive compounds that can enhance skin regeneration and ultimately aid in the development of a complex wound healing device.
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Affiliation(s)
- David H. Ramos-Rodriguez
- Bioengineering and Health Technologies Group, The School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, UK;
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK; (S.M.); (F.C.)
| | - Sheila MacNeil
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK; (S.M.); (F.C.)
| | - Frederik Claeyssens
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK; (S.M.); (F.C.)
| | - Ilida Ortega Asencio
- Bioengineering and Health Technologies Group, The School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, UK;
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22
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Paterson TE, Dhowre HS, Villanueva D, Holland JW, Reddy Kethiri A, Singh V, Claeyssens F, MacNeil S, Ortega Asencio I. Tuning Electrospun Substrate Stiffness for the Fabrication of a Biomimetic Amniotic Membrane Substitute for Corneal Healing. ACS Appl Bio Mater 2021; 4:5638-5649. [DOI: 10.1021/acsabm.1c00436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Thomas E. Paterson
- Automatic Control and Systems Engineering, University of Sheffield, Sheffield S1 3JD, United Kingdom
| | - Hala S. Dhowre
- School of Dentistry, University of Sheffield, Sheffield S10 2TA, United Kingdom
| | - Danilo Villanueva
- School of Dentistry, University of Sheffield, Sheffield S10 2TA, United Kingdom
| | - Joseph W. Holland
- School of Dentistry, University of Sheffield, Sheffield S10 2TA, United Kingdom
| | - Abhinav Reddy Kethiri
- Centre for Ocular Regeneration, Prof. Brien Holden Eye Research Centre, L V Prasad Eye Institute, Hyderabad 500034, India
| | - Vivek Singh
- Centre for Ocular Regeneration, Prof. Brien Holden Eye Research Centre, L V Prasad Eye Institute, Hyderabad 500034, India
| | - Frederik Claeyssens
- The Kroto Research Institute, North Campus, University of Sheffield, Sheffield S3 7HQ, United Kingdom
| | - Sheila MacNeil
- The Kroto Research Institute, North Campus, University of Sheffield, Sheffield S3 7HQ, United Kingdom
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23
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Ramos-Rodriguez DH, MacNeil S, Claeyssens F, Ortega Asencio I. Fabrication of Topographically Controlled Electrospun Scaffolds to Mimic the Stem Cell Microenvironment in the Dermal-Epidermal Junction. ACS Biomater Sci Eng 2021; 7:2803-2813. [PMID: 33905240 DOI: 10.1021/acsbiomaterials.0c01775] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The use of microfabrication techniques for the development of innovative constructs for tissue regeneration is a growing area of research. This area comprises both manufacturing and biological approaches for the development of smart materials aiming to control and direct cell behavior to enhance tissue healing. Many groups have focused their efforts on introducing complexity within these innovative constructs via the inclusion of nano- and microtopographical cues mimicking physical and biological aspects of the native stem cell niche. Specifically, in the area of skin tissue engineering, seminal work has reported replicating the microenvironments located in the dermal-epithelial junction, which are known as rete ridges. The rete ridges are key for both stem cell control and the physiological performance of the skin. In this work, we have introduced complexity within electrospun membranes to mimic the morphology of the rete ridges in the skin. We designed and tested three different patterns, characterized them, and explored their performance in vitro, using 3D skin models. One of the studied patterns (pattern B) was shown to aid in the development of an in vitro rite-ridgelike skin model that resulted in the expression of relevant epithelial markers such as collagen IV and integrin β1. In summary, we have developed a new skin model including synthetic rete-ridgelike structures that replicate both morphology and function of the native dermal-epidermal junction and that offer new insights for the development of smart skin tissue engineering constructs.
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Affiliation(s)
- David H Ramos-Rodriguez
- Bioengineering and Health Technologies Group, The School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, U.K
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, U.K
| | - Sheila MacNeil
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, U.K
| | - Frederik Claeyssens
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, U.K
| | - Ilida Ortega Asencio
- Bioengineering and Health Technologies Group, The School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, U.K
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Ramos-Rodriguez DH, MacNeil S, Claeyssens F, Asencio IO. The Use of Microfabrication Techniques for the Design and Manufacture of Artificial Stem Cell Microenvironments for Tissue Regeneration. Bioengineering (Basel) 2021; 8:50. [PMID: 33922428 PMCID: PMC8146165 DOI: 10.3390/bioengineering8050050] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/19/2021] [Accepted: 04/21/2021] [Indexed: 12/13/2022] Open
Abstract
The recapitulation of the stem cell microenvironment is an emerging area of research that has grown significantly in the last 10 to 15 years. Being able to understand the underlying mechanisms that relate stem cell behavior to the physical environment in which stem cells reside is currently a challenge that many groups are trying to unravel. Several approaches have attempted to mimic the biological components that constitute the native stem cell niche, however, this is a very intricate environment and, although promising advances have been made recently, it becomes clear that new strategies need to be explored to ensure a better understanding of the stem cell niche behavior. The second strand in stem cell niche research focuses on the use of manufacturing techniques to build simple but functional models; these models aim to mimic the physical features of the niche environment which have also been demonstrated to play a big role in directing cell responses. This second strand has involved a more engineering approach in which a wide set of microfabrication techniques have been explored in detail. This review aims to summarize the use of these microfabrication techniques and how they have approached the challenge of mimicking the native stem cell niche.
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Affiliation(s)
- David H. Ramos-Rodriguez
- Bioengineering and Health Technologies Group, The School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, UK;
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK; (S.M.); (F.C.)
| | - Sheila MacNeil
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK; (S.M.); (F.C.)
| | - Frederik Claeyssens
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK; (S.M.); (F.C.)
| | - Ilida Ortega Asencio
- Bioengineering and Health Technologies Group, The School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, UK;
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Field J, Haycock JW, Boissonade FM, Claeyssens F. A Tuneable, Photocurable, Poly(Caprolactone)-Based Resin for Tissue Engineering-Synthesis, Characterisation and Use in Stereolithography. Molecules 2021; 26:1199. [PMID: 33668087 PMCID: PMC7956195 DOI: 10.3390/molecules26051199] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 02/21/2021] [Accepted: 02/22/2021] [Indexed: 11/16/2022] Open
Abstract
Stereolithography is a useful additive manufacturing technique for the production of scaffolds for tissue engineering. Here we present a tuneable, easy-to-manufacture, photocurable resin for use in stereolithography, based on the widely used biomaterial, poly(caprolactone) (PCL). PCL triol was methacrylated to varying degrees and mixed with photoinitiator to produce a photocurable prepolymer resin, which cured under UV light to produce a cytocompatible material. This study demonstrates that poly(caprolactone) methacrylate (PCLMA) can be produced with a range of mechanical properties and degradation rates. By increasing the degree of methacrylation (DM) of the prepolymer, the Young's modulus of the crosslinked PCLMA could be varied from 0.12-3.51 MPa. The accelerated degradation rate was also reduced from complete degradation in 17 days to non-significant degradation in 21 days. The additive manufacturing capabilities of the resin were demonstrated by the production of a variety of different 3D structures using micro-stereolithography. Here, β-carotene was used as a novel, cytocompatible photoabsorber and enabled the production of complex geometries by giving control over cure depth. The PCLMA presented here offers an attractive, tuneable biomaterial for the production of tissue engineering scaffolds for a wide range of applications.
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Affiliation(s)
- Jonathan Field
- The School of Clinical Dentistry, The University of Sheffield, Sheffield S10 2TA, UK; (J.F.); (F.M.B.)
| | - John W. Haycock
- The Department of Materials Science and Engineering, The University of Sheffield, Sheffield S3 7HQ, UK;
- The Neuroscience Institute, The University of Sheffield, Sheffield S10 2HQ, UK
| | - Fiona M. Boissonade
- The School of Clinical Dentistry, The University of Sheffield, Sheffield S10 2TA, UK; (J.F.); (F.M.B.)
- The Neuroscience Institute, The University of Sheffield, Sheffield S10 2HQ, UK
| | - Frederik Claeyssens
- The Department of Materials Science and Engineering, The University of Sheffield, Sheffield S3 7HQ, UK;
- The Neuroscience Institute, The University of Sheffield, Sheffield S10 2HQ, UK
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Farr N, Thanarak J, Schäfer J, Quade A, Claeyssens F, Green N, Rodenburg C. Understanding Surface Modifications Induced via Argon Plasma Treatment through Secondary Electron Hyperspectral Imaging. Adv Sci (Weinh) 2021; 8:2003762. [PMID: 33643809 PMCID: PMC7887591 DOI: 10.1002/advs.202003762] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/10/2020] [Indexed: 06/01/2023]
Abstract
Understanding the effects that sterilization methods have on the surface of a biomaterial is a prerequisite for clinical deployment. Sterilization causes alterations in a material's surface chemistry and surface structures that can result in significant changes to its cellular response. Here we compare surfaces resulting from the application of the industry standard autoclave sterilisation to that of surfaces resulting from the use of low-pressure Argon glow discharge within a novel gas permeable packaging method in order to explore a potential new biomaterial sterilisation method. Material surfaces are assessed by applying secondary electron hyperspectral imaging (SEHI). SEHI is a novel low-voltage scanning electron microscopy based characterization technique that, in addition to capturing topographical images, also provides nanoscale resolution chemical maps by utilizing the energy distribution of emitted secondary electrons. Here, SEHI maps are exploited to assess the lateral distributions of diverse functional groups that are effected by the sterilization treatments. This information combined with a range of conventional surface analysis techniques and a cellular metabolic activity assay reveals persuasive reasons as to why low-pressure argon glow discharge should be considered for further optimization as a potential terminal sterilization method for PGS-M, a functionalized form of poly(glycerol sebacate) (PGS).
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Affiliation(s)
- Nicholas Farr
- Department of Materials Science and EngineeringSir Robert Hadfield BuildingUniversity of SheffieldMappin StreetSheffieldS1 3JDUK
- Insigneo Institute for In Silico MedicineThe Pam Liversidge BuildingSir Robert Hadfield BuildingUniversity of SheffieldMappin StreetSheffieldS1 3JDUK
| | - Jeerawan Thanarak
- Department of Materials Science and EngineeringSir Robert Hadfield BuildingUniversity of SheffieldMappin StreetSheffieldS1 3JDUK
- Insigneo Institute for In Silico MedicineThe Pam Liversidge BuildingSir Robert Hadfield BuildingUniversity of SheffieldMappin StreetSheffieldS1 3JDUK
| | - Jan Schäfer
- Leibniz Institute for Plasma Science and Technology (INP e.V.)Felix‐Hausdorff‐Str. 2Greifswald17489Germany
| | - Antje Quade
- Leibniz Institute for Plasma Science and Technology (INP e.V.)Felix‐Hausdorff‐Str. 2Greifswald17489Germany
| | - Frederik Claeyssens
- Department of Materials Science and EngineeringSir Robert Hadfield BuildingUniversity of SheffieldMappin StreetSheffieldS1 3JDUK
- Insigneo Institute for In Silico MedicineThe Pam Liversidge BuildingSir Robert Hadfield BuildingUniversity of SheffieldMappin StreetSheffieldS1 3JDUK
| | - Nicola Green
- Department of Materials Science and EngineeringSir Robert Hadfield BuildingUniversity of SheffieldMappin StreetSheffieldS1 3JDUK
- Insigneo Institute for In Silico MedicineThe Pam Liversidge BuildingSir Robert Hadfield BuildingUniversity of SheffieldMappin StreetSheffieldS1 3JDUK
| | - Cornelia Rodenburg
- Department of Materials Science and EngineeringSir Robert Hadfield BuildingUniversity of SheffieldMappin StreetSheffieldS1 3JDUK
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Mendibil X, González-Pérez F, Bazan X, Díez-Ahedo R, Quintana I, Rodríguez FJ, Basnett P, Nigmatullin R, Lukasiewicz B, Roy I, Taylor CS, Glen A, Claeyssens F, Haycock JW, Schaafsma W, González E, Castro B, Duffy P, Merino S. Bioresorbable and Mechanically Optimized Nerve Guidance Conduit Based on a Naturally Derived Medium Chain Length Polyhydroxyalkanoate and Poly(ε-Caprolactone) Blend. ACS Biomater Sci Eng 2021; 7:672-689. [DOI: 10.1021/acsbiomaterials.0c01476] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xabier Mendibil
- Tekniker, Basque Research and Technology Alliance (BRTA), C/ Iñaki Goenaga 5, 20600 Eibar, Spain
| | - Francisco González-Pérez
- Laboratory of Molecular Neurology, Hospital Nacional de Parapléjicos, Finca La Peraleda S/n, 45071 Toledo, Spain
| | - Xabier Bazan
- Tekniker, Basque Research and Technology Alliance (BRTA), C/ Iñaki Goenaga 5, 20600 Eibar, Spain
| | - Ruth Díez-Ahedo
- Tekniker, Basque Research and Technology Alliance (BRTA), C/ Iñaki Goenaga 5, 20600 Eibar, Spain
| | - Iban Quintana
- Tekniker, Basque Research and Technology Alliance (BRTA), C/ Iñaki Goenaga 5, 20600 Eibar, Spain
| | - Francisco Javier Rodríguez
- Laboratory of Molecular Neurology, Hospital Nacional de Parapléjicos, Finca La Peraleda S/n, 45071 Toledo, Spain
| | - Pooja Basnett
- School of Life Sciences, College of Liberal Arts and Sciences, University of Westminster, 115 New Cavendish Street, London W1W 6UW, U.K
| | - Rinat Nigmatullin
- School of Life Sciences, College of Liberal Arts and Sciences, University of Westminster, 115 New Cavendish Street, London W1W 6UW, U.K
| | - Barbara Lukasiewicz
- School of Life Sciences, College of Liberal Arts and Sciences, University of Westminster, 115 New Cavendish Street, London W1W 6UW, U.K
| | - Ipsita Roy
- Department of Materials Science and Engineering, The University of Sheffield, Sheffield S3 7HQ, U.K
| | - Caroline S. Taylor
- Department of Materials Science and Engineering, The University of Sheffield, Sheffield S3 7HQ, U.K
| | - Adam Glen
- Department of Materials Science and Engineering, The University of Sheffield, Sheffield S3 7HQ, U.K
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, The University of Sheffield, Sheffield S3 7HQ, U.K
| | - John W. Haycock
- Department of Materials Science and Engineering, The University of Sheffield, Sheffield S3 7HQ, U.K
| | - Wandert Schaafsma
- Histocell S.L., Parque Tecnológico de Bizkaia, 801 A, 2, 48160 Derio, Spain
| | - Eva González
- Histocell S.L., Parque Tecnológico de Bizkaia, 801 A, 2, 48160 Derio, Spain
| | - Begoña Castro
- Histocell S.L., Parque Tecnológico de Bizkaia, 801 A, 2, 48160 Derio, Spain
| | - Patrick Duffy
- Ashland Specialties Ireland, Synergy Centre, Dublin Road, Petitswood Mullingar, Co. Westmeath N91 F6PD, Ireland
| | - Santos Merino
- Tekniker, Basque Research and Technology Alliance (BRTA), C/ Iñaki Goenaga 5, 20600 Eibar, Spain
- Departamento de Electricidad y Electrónica, Universidad del País Vasco UPV/EHU, 48940 Leioa, Spain
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Sherborne C, Claeyssens F. Considerations Using Additive Manufacture of Emulsion Inks to Produce Respiratory Protective Filters Against Viral Respiratory Tract Infections Such as the COVID-19 Virus. Int J Bioprint 2021; 7:316. [PMID: 33585713 PMCID: PMC7875060 DOI: 10.18063/ijb.v7i1.316] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 11/18/2020] [Indexed: 11/25/2022] Open
Abstract
This review paper explores the potential of combining emulsion-based inks with additive manufacturing (AM) to produce filters for respiratory protective equipment (RPE) in the fight against viral and bacterial infections of the respiratory tract. The value of these filters has been highlighted by the current severe acute respiratory syndrome coronavirus-2 crisis where the importance of protective equipment for health care workers cannot be overstated. Three-dimensional (3D) printing of emulsions is an emerging technology built on a well-established field of emulsion templating to produce porous materials such as polymerized high internal phase emulsions (polyHIPEs). PolyHIPE-based porous polymers have tailorable porosity from the submicron to 100 s of µm. Advances in 3D printing technology enables the control of the bulk shape while a micron porosity is controlled independently by the emulsion-based ink. Herein, we present an overview of the current polyHIPE-based filter applications. Then, we discuss the current use of emulsion templating combined with stereolithography and extrusion-based AM technologies. The benefits and limitation of various AM techniques are discussed, as well as considerations for a scalable manufacture of a polyHIPE-based RPE.
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Affiliation(s)
- Colin Sherborne
- The Kroto Research Institute, North Campus, University of Sheffield, Broad Lane, Sheffield, S3 7HQ, UK
| | - Frederik Claeyssens
- The Kroto Research Institute, North Campus, University of Sheffield, Broad Lane, Sheffield, S3 7HQ, UK
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Farr NTH, Hamad SF, Gray E, Magazzeni CM, Longman F, Armstrong DEJ, Foreman JP, Claeyssens F, Green NH, Rodenburg C. Identifying and mapping chemical bonding within phenolic resin using secondary electron hyperspectral imaging. Polym Chem 2021. [DOI: 10.1039/d0py01220c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
“Secondary electron hyperspectral imaging (SEHI) is an innovative SEM-based analysis tool allowing spatially-resolved chemical analysis beyond elemental composition”.
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Affiliation(s)
- Nicholas T. H. Farr
- Department of Materials Science and Engineering
- Sir Robert Hadfield Building
- Mappin Street
- University of Sheffield
- UK
| | - Sameer F. Hamad
- Department of Materials Science and Engineering
- Sir Robert Hadfield Building
- Mappin Street
- University of Sheffield
- UK
| | - Euan Gray
- Department of Materials Science and Engineering
- Sir Robert Hadfield Building
- Mappin Street
- University of Sheffield
- UK
| | | | - Fodio Longman
- Department of Materials Science and Engineering
- Sir Robert Hadfield Building
- Mappin Street
- University of Sheffield
- UK
| | | | - Joel P. Foreman
- Department of Materials Science and Engineering
- Sir Robert Hadfield Building
- Mappin Street
- University of Sheffield
- UK
| | - Frederik Claeyssens
- Department of Materials Science and Engineering
- Sir Robert Hadfield Building
- Mappin Street
- University of Sheffield
- UK
| | - Nicola H. Green
- Department of Materials Science and Engineering
- Sir Robert Hadfield Building
- Mappin Street
- University of Sheffield
- UK
| | - Cornelia Rodenburg
- Department of Materials Science and Engineering
- Sir Robert Hadfield Building
- Mappin Street
- University of Sheffield
- UK
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Bahmaee H, Owen R, Boyle L, Perrault CM, Garcia-Granada AA, Reilly GC, Claeyssens F. Design and Evaluation of an Osteogenesis-on-a-Chip Microfluidic Device Incorporating 3D Cell Culture. Front Bioeng Biotechnol 2020; 8:557111. [PMID: 33015017 PMCID: PMC7509430 DOI: 10.3389/fbioe.2020.557111] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 08/12/2020] [Indexed: 12/12/2022] Open
Abstract
Microfluidic-based tissue-on-a-chip devices have generated significant research interest for biomedical applications, such as pharmaceutical development, as they can be used for small volume, high throughput studies on the effects of therapeutics on tissue-mimics. Tissue-on-a-chip devices are evolving from basic 2D cell cultures incorporated into microfluidic devices to complex 3D approaches, with modern designs aimed at recapitulating the dynamic and mechanical environment of the native tissue. Thus far, most tissue-on-a-chip research has concentrated on organs involved with drug uptake, metabolism and removal (e.g., lung, skin, liver, and kidney); however, models of the drug metabolite target organs will be essential to provide information on therapeutic efficacy. Here, we develop an osteogenesis-on-a-chip device that comprises a 3D environment and fluid shear stresses, both important features of bone. This inexpensive, easy-to-fabricate system based on a polymerized High Internal Phase Emulsion (polyHIPE) supports proliferation, differentiation and extracellular matrix production of human embryonic stem cell-derived mesenchymal progenitor cells (hES-MPs) over extended time periods (up to 21 days). Cells respond positively to both chemical and mechanical stimulation of osteogenesis, with an intermittent flow profile containing rest periods strongly promoting differentiation and matrix formation in comparison to static and continuous flow. Flow and shear stresses were modeled using computational fluid dynamics. Primary cilia were detectable on cells within the device channels demonstrating that this mechanosensory organelle is present in the complex 3D culture environment. In summary, this device aids the development of ‘next-generation’ tools for investigating novel therapeutics for bone in comparison with standard laboratory and animal testing.
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Affiliation(s)
- Hossein Bahmaee
- Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield, United Kingdom.,INSIGNEO Institute for in silico Medicine, The University of Sheffield, Sheffield, United Kingdom
| | - Robert Owen
- Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield, United Kingdom.,INSIGNEO Institute for in silico Medicine, The University of Sheffield, Sheffield, United Kingdom.,Regenerative Medicine and Cellular Therapies, School of Pharmacy, University of Nottingham Biodiscovery Institute, Nottingham, United Kingdom
| | - Liam Boyle
- Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield, United Kingdom.,INSIGNEO Institute for in silico Medicine, The University of Sheffield, Sheffield, United Kingdom
| | - Cecile M Perrault
- INSIGNEO Institute for in silico Medicine, The University of Sheffield, Sheffield, United Kingdom.,Eden Microfluidics, Paris, France
| | | | - Gwendolen C Reilly
- Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield, United Kingdom.,INSIGNEO Institute for in silico Medicine, The University of Sheffield, Sheffield, United Kingdom
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield, United Kingdom.,INSIGNEO Institute for in silico Medicine, The University of Sheffield, Sheffield, United Kingdom
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Aldemir Dikici B, Claeyssens F. Basic Principles of Emulsion Templating and Its Use as an Emerging Manufacturing Method of Tissue Engineering Scaffolds. Front Bioeng Biotechnol 2020; 8:875. [PMID: 32903473 PMCID: PMC7435020 DOI: 10.3389/fbioe.2020.00875] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/08/2020] [Indexed: 12/20/2022] Open
Abstract
Tissue engineering (TE) aims to regenerate critical size defects, which cannot heal naturally, by using highly porous matrices called TE scaffolds made of biocompatible and biodegradable materials. There are various manufacturing techniques commonly used to fabricate TE scaffolds. However, in most cases, they do not provide materials with a highly interconnected pore design. Thus, emulsion templating is a promising and convenient route for the fabrication of matrices with up to 99% porosity and high interconnectivity. These matrices have been used for various application areas for decades. Although this polymer structuring technique is older than TE itself, the use of polymerised internal phase emulsions (PolyHIPEs) in TE is relatively new compared to other scaffold manufacturing techniques. It is likely because it requires a multidisciplinary background including materials science, chemistry and TE although producing emulsion templated scaffolds is practically simple. To date, a number of excellent reviews on emulsion templating have been published by the pioneers in this field in order to explain the chemistry behind this technique and potential areas of use of the emulsion templated structures. This particular review focusses on the key points of how emulsion templated scaffolds can be fabricated for different TE applications. Accordingly, we first explain the basics of emulsion templating and characteristics of PolyHIPE scaffolds. Then, we discuss the role of each ingredient in the emulsion and the impact of the compositional changes and process conditions on the characteristics of PolyHIPEs. Afterward, current fabrication methods of biocompatible PolyHIPE scaffolds and polymerisation routes are detailed, and the functionalisation strategies that can be used to improve the biological activity of PolyHIPE scaffolds are discussed. Finally, the applications of PolyHIPEs on soft and hard TE as well as in vitro models and drug delivery in the literature are summarised.
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Affiliation(s)
- Betül Aldemir Dikici
- Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield, United Kingdom
- Department of Materials Science and Engineering, INSIGNEO Institute for In Silico Medicine, The University of Sheffield, Sheffield, United Kingdom
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield, United Kingdom
- Department of Materials Science and Engineering, INSIGNEO Institute for In Silico Medicine, The University of Sheffield, Sheffield, United Kingdom
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Dikici S, Claeyssens F, MacNeil S. Pre-Seeding of Simple Electrospun Scaffolds with a Combination of Endothelial Cells and Fibroblasts Strongly Promotes Angiogenesis. Tissue Eng Regen Med 2020; 17:445-458. [PMID: 32447555 PMCID: PMC7392995 DOI: 10.1007/s13770-020-00263-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 03/14/2020] [Accepted: 04/08/2020] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Introduction of pro-angiogenic cells into tissue-engineered (TE) constructs (prevascularisation) is a promising approach to overcome delayed neovascularisation of such constructs post-implantation. Accordingly, in this study, we examined the contribution of human dermal microvascular endothelial cells (HDMECs) and human dermal fibroblasts (HDFs) alone and in combination on the formation of new blood vessels in ex-ovo chick chorioallantoic membrane (CAM) assay. METHODS Poly-3-hydroxybutyrate-co-3-hydroxyvalerate (PHBV) and polycaprolactone (PCL) were first examined in terms of their physical, mechanical, and biological performances. The effect of gelatin coating and co-culture conditions on enhancing endothelial cell viability and growth was then investigated. Finally, the angiogenic potential of HDMECs and HDFs were assessed macroscopically and histologically after seeding on simple electrospun PHBV scaffolds either in isolation or in indirect co-culture using an ex-ovo CAM assay. RESULTS The results demonstrated that PHBV was slightly more favourable than PCL for HDMECs in terms of cell metabolic activity. The gelatin coating of PHBV scaffolds and co-culture of HDMECs with HDFs both showed a positive impact on HDMECs viability and growth. Both cell types induced angiogenesis over 7 days in the CAM assay either in isolation or in co-culture. The introduction of HDMECs to the scaffolds resulted in the production of more blood vessels in the area of implantation than the introduction of HDFs, but the co-culture of HDMECs and HDFs gave the most significant angiogenic activity. CONCLUSION Our findings showed that the in vitro prevascularisation of TE constructs with HDMECs and HDFs alone or in co-culture promotes angiogenesis in implantable TE constructs.
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Affiliation(s)
- Serkan Dikici
- Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, North Campus Broad Lane, Sheffield, S3 7HQ, UK
| | - Frederik Claeyssens
- Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, North Campus Broad Lane, Sheffield, S3 7HQ, UK
| | - Sheila MacNeil
- Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, North Campus Broad Lane, Sheffield, S3 7HQ, UK.
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Sandoval‐Castellanos AM, Claeyssens F, Haycock JW. Biomimetic surface delivery of NGF and BDNF to enhance neurite outgrowth. Biotechnol Bioeng 2020; 117:3124-3135. [DOI: 10.1002/bit.27466] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/11/2020] [Accepted: 06/18/2020] [Indexed: 11/11/2022]
Affiliation(s)
| | - Frederik Claeyssens
- Department of Materials Science and Engineering The University of Sheffield Sheffield United Kingdom
| | - John W. Haycock
- Department of Materials Science and Engineering The University of Sheffield Sheffield United Kingdom
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Lizarraga-Valderrama LR, Nigmatullin R, Ladino B, Taylor CS, Boccaccini AR, Knowles JC, Claeyssens F, Haycock JW, Roy I. Modulation of neuronal cell affinity of composite scaffolds based on polyhydroxyalkanoates and bioactive glasses. ACTA ACUST UNITED AC 2020; 15:045024. [PMID: 32100724 DOI: 10.1088/1748-605x/ab797b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The biocompatibility and neuron regenerating properties of various bioactive glass (BG)/polyhydroxyalkanoate (PHA) blend composites were assessed in order to study their suitability for peripheral nerve tissue applications, specifically as lumen structures for nerve guidance conduits. BG/PHA blend composites were fabricated using Bioactive glass® 45 S5 (BG1) and BG 1393 (BG2) with the 25:75 poly(3-hydroxyoctanoate/poly3-hydroxybutyrate), 25:75 P(3HO)/P(3HB) blend (PHA blend). Various concentrations of each BG (0.5 wt%, 1.0 wt% and 2.5 wt%) were used to determine the effect of BG on neuronal growth and differentiation, in single culture using NG108-15 neuronal cells and in a co-culture along with RN22 Schwann cells. NG108-15 cells exhibited good growth and differentiation on all the PHA blend composites showing that both BGs have good biocompatibility at 0.5 wt%, 1.0 wt% and 2.5 wt% within the PHA blend. The Young's modulus values displayed by all the PHA blend/BG composites ranged from 385.6 MPa to 1792.6 MPa, which are able to provide the required support and protective effect for the regeneration of peripheral nerves. More specifically, the tensile strength obtained in the PHA blend/BG1 (1.0 wt%) (10.0 ± 0.6 MPa) was found to be similar to that of the rabbit peroneal nerve. This composite also exhibited the best biological performance in supporting growth and neuronal differentiation among all the substrates. The neurite extension on this composite was found to be remarkable with the neurites forming a complex connection network.
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Affiliation(s)
- Lorena R Lizarraga-Valderrama
- Applied Biotechnology Research Group, School of Life Sciences, College of Liberal Arts and Sciences, University of Westminster, London, United Kingdom. School of Life Sciences, Medical School, University of Nottingham, Nottigham, United Kingdom
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Dikici S, Bullock AJ, Yar M, Claeyssens F, MacNeil S. 2-deoxy-d-ribose (2dDR) upregulates vascular endothelial growth factor (VEGF) and stimulates angiogenesis. Microvasc Res 2020; 131:104035. [PMID: 32593538 DOI: 10.1016/j.mvr.2020.104035] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/12/2020] [Accepted: 06/16/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND Delayed neovascularisation of tissue-engineered (TE) complex constructs is a major challenge that causes their failure post-implantation. Although significant progress has been made in the field of angiogenesis, ensuring rapid neovascularisation still remains a challenge. The use of pro-angiogenic agents is an effective approach to promote angiogenesis, and vascular endothelial growth factor (VEGF) has been widely studied both at the biological and molecular levels and is recognised as a key stimulator of angiogenesis. However, the exogenous use of VEGF in an uncontrolled manner has been shown to result in leaky, permeable and haemorrhagic vessels. Thus, researchers have been actively seeking alternative agents to upregulate VEGF production rather than exogenous use of VEGF in TE systems. We have previously revealed the potential of 2-deoxy-d-ribose (2dDR) as an alternative pro-angiogenic agent to induce angiogenesis and accelerates wound healing. However, to date, there is not any clear evidence on whether 2dDR influences the angiogenic cascade that involves VEGF. METHODS In this study, we explored the angiogenic properties of 2dDR either by its direct application to human aortic endothelial cells (HAECs) or when released from commercially available alginate dressings and demonstrated that when 2dDR promotes angiogenesis, it also increases the VEGF production of HAECs. RESULTS The VEGF quantification results suggested that VEGF production by HAECs was increased with 2dDR treatment but not with other sugars, including 2-deoxy-l-ribose (2dLR) and d-glucose (DG). The stability studies demonstrated that approximately 40-50% of the 2dDR had disappeared in the media over 14 days, either in the presence or absence of HAECs, and the reduction was higher when cells were present. The concentration of VEGF in the media also fell after day 4 associated with the reduction in 2dDR. CONCLUSION This study suggests that 2dDR (but not other sugars tested in this study) stimulates angiogenesis by increasing the production of VEGF. We conclude 2dDR appears to be a practical and effective indirect route to upregulating VEGF for several days, leading to increased angiogenesis.
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Affiliation(s)
- Serkan Dikici
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield, UK
| | - Anthony J Bullock
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield, UK
| | - Muhammad Yar
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Lahore 54000, Pakistan
| | - Frederik Claeyssens
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield, UK
| | - Sheila MacNeil
- Department of Materials Science & Engineering, Kroto Research Institute, University of Sheffield, Sheffield, UK.
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Dikici S, Claeyssens F, MacNeil S. Bioengineering Vascular Networks to Study Angiogenesis and Vascularization of Physiologically Relevant Tissue Models in Vitro. ACS Biomater Sci Eng 2020; 6:3513-3528. [PMID: 32582840 PMCID: PMC7304666 DOI: 10.1021/acsbiomaterials.0c00191] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/29/2020] [Indexed: 12/11/2022]
Abstract
Angiogenesis assays are essential for studying aspects of neovascularization and angiogenesis and investigating drugs that stimulate or inhibit angiogenesis. To date, there are several in vitro and in vivo angiogenesis assays that are used for studying different aspects of angiogenesis. Although in vivo assays are the most representative of native angiogenesis, they raise ethical questions, require considerable technical skills, and are expensive. In vitro assays are inexpensive and easier to perform, but the majority of them are only two-dimensional cell monolayers which lack the physiological relevance of three-dimensional structures. Thus, it is important to look for alternative platforms to study angiogenesis under more physiologically relevant conditions in vitro. Accordingly, in this study, we developed polymeric vascular networks to be used to study angiogenesis and vascularization of a 3D human skin model in vitro. Our results showed that this platform allowed the study of more than one aspect of angiogenesis, endothelial migration and tube formation, in vitro when combined with Matrigel. We successfully reconstructed a human skin model, as a representative of a physiologically relevant and complex structure, and assessed the suitability of the developed in vitro platform for studying endothelialization of the tissue-engineered skin model.
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Affiliation(s)
- Serkan Dikici
- Department of Materials
Science
and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, United Kingdom
| | - Frederik Claeyssens
- Department of Materials
Science
and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, United Kingdom
| | - Sheila MacNeil
- Department of Materials
Science
and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, United Kingdom
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Owen R, Sherborne C, Evans R, Reilly GC, Claeyssens F. Combined Porogen Leaching and Emulsion Templating to produce Bone Tissue Engineering Scaffolds. Int J Bioprint 2020; 6:265. [PMID: 32782992 PMCID: PMC7415854 DOI: 10.18063/ijb.v6i2.265] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 04/01/2020] [Indexed: 01/13/2023] Open
Abstract
Bone has a hierarchy of porosity that is often overlooked when creating tissue engineering scaffolds where pore sizes are typically confined to a single order of magnitude. High internal phase emulsion (HIPE) templating produces polymerized HIPEs (polyHIPEs): highly interconnected porous polymers which have two length scales of porosity covering the 1-100 μm range. However, additional larger scales of porosity cannot be introduced in the standard emulsion formulation. Researchers have previously overcome this by additively manufacturing emulsions; fabricating highly microporous struts into complex macroporous geometries. This is time consuming and expensive; therefore, here we assessed the feasibility of combining porogen leaching with emulsion templating to introduce additional macroporosity. Alginate beads between 275 and 780 μm were incorporated into the emulsion at 0, 50, and 100 wt%. Once polymerized, alginate was dissolved leaving highly porous polyHIPE scaffolds with added macroporosity. The compressive modulus of the scaffolds decreased as alginate porogen content increased. Cellular performance was assessed using MLO-A5 post-osteoblasts. Seeding efficiency was significantly higher and mineralized matrix deposition was more uniformly deposited throughout porogen leached scaffolds compared to plain polyHIPEs. Deep cell infiltration only occurred in porogen leached scaffolds as detected by histology and lightsheet microscopy. This study reveals a quick, low cost and simple method of producing multiscale porosity scaffolds for tissue engineering.
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Affiliation(s)
- Robert Owen
- Department of Materials Science and Engineering, INSIGNEO Institute for in silico Medicine, University of Sheffield, UK
- Department of Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, UK
- Regenerative Medicine and Cellular Therapies, School of Pharmacy, University of Nottingham Biodiscovery Institute, University Park, UK
| | - Colin Sherborne
- Department of Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, UK
| | - Richard Evans
- Bioengineering, Interdisciplinary Programmes Engineering, University of Sheffield, UK
| | - Gwendolen C. Reilly
- Department of Materials Science and Engineering, INSIGNEO Institute for in silico Medicine, University of Sheffield, UK
- Department of Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, UK
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, INSIGNEO Institute for in silico Medicine, University of Sheffield, UK
- Department of Materials Science and Engineering, The Kroto Research Institute, University of Sheffield, UK
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38
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Diez-Ahedo R, Mendibil X, Márquez-Posadas MC, Quintana I, González F, Rodríguez FJ, Zilic L, Sherborne C, Glen A, Taylor CS, Claeyssens F, Haycock JW, Schaafsma W, González E, Castro B, Merino S. UV-Casting on Methacrylated PCL for the Production of a Peripheral Nerve Implant Containing an Array of Porous Aligned Microchannels. Polymers (Basel) 2020; 12:E971. [PMID: 32331241 PMCID: PMC7240584 DOI: 10.3390/polym12040971] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/14/2020] [Accepted: 04/17/2020] [Indexed: 02/07/2023] Open
Abstract
Peripheral nerves are basic communication structures guiding motor and sensory information from the central nervous system to receptor units. Severed peripheral nerve injuries represent a large clinical problem with relevant challenges to successful synthetic nerve repair scaffolds as substitutes to autologous nerve grafting. Numerous studies reported the use of hollow tubes made of synthetic polymers sutured between severed nerve stumps to promote nerve regeneration while providing protection for external factors, such as scar tissue formation and inflammation. Few approaches have described the potential use of a lumen structure comprised of microchannels or microfibers to provide axon growth avoiding misdirection and fostering proper healing. Here, we report the use of a 3D porous microchannel-based structure made of a photocurable methacrylated polycaprolactone, whose mechanical properties are comparable to native nerves. The neuro-regenerative properties of the polymer were assessed in vitro, prior to the implantation of the 3D porous structure, in a 6-mm rat sciatic nerve gap injury. The manufactured implants were biocompatible and able to be resorbed by the host's body at a suitable rate, allowing the complete healing of the nerve. The innovative design of the highly porous structure with the axon guiding microchannels, along with the observation of myelinated axons and Schwann cells in the in vivo tests, led to a significant progress towards the standardized use of synthetic 3D multichannel-based structures in peripheral nerve surgery.
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Affiliation(s)
- Ruth Diez-Ahedo
- Tekniker, C/Iñaki Goenaga 5, 20600 Eibar, Spain; (R.D.-A.); (X.M.); (M.C.M.-P.); (I.Q.)
| | - Xabier Mendibil
- Tekniker, C/Iñaki Goenaga 5, 20600 Eibar, Spain; (R.D.-A.); (X.M.); (M.C.M.-P.); (I.Q.)
| | | | - Iban Quintana
- Tekniker, C/Iñaki Goenaga 5, 20600 Eibar, Spain; (R.D.-A.); (X.M.); (M.C.M.-P.); (I.Q.)
| | - Francisco González
- Laboratory of Molecular Neurology, Hospital Nacional de Parapléjicos, Finca. la Peraleda s/n, 45071 Toledo, Spain; (F.G.); (F.J.R.)
| | - Francisco Javier Rodríguez
- Laboratory of Molecular Neurology, Hospital Nacional de Parapléjicos, Finca. la Peraleda s/n, 45071 Toledo, Spain; (F.G.); (F.J.R.)
| | - Leyla Zilic
- Department of Materials Science & Engineering, University of Sheffield, Sheffield S3 7HQ, UK; (L.Z.); (C.S.); (A.G.); (C.S.T.); (F.C.); (J.W.H.)
| | - Colin Sherborne
- Department of Materials Science & Engineering, University of Sheffield, Sheffield S3 7HQ, UK; (L.Z.); (C.S.); (A.G.); (C.S.T.); (F.C.); (J.W.H.)
| | - Adam Glen
- Department of Materials Science & Engineering, University of Sheffield, Sheffield S3 7HQ, UK; (L.Z.); (C.S.); (A.G.); (C.S.T.); (F.C.); (J.W.H.)
| | - Caroline S. Taylor
- Department of Materials Science & Engineering, University of Sheffield, Sheffield S3 7HQ, UK; (L.Z.); (C.S.); (A.G.); (C.S.T.); (F.C.); (J.W.H.)
| | - Frederik Claeyssens
- Department of Materials Science & Engineering, University of Sheffield, Sheffield S3 7HQ, UK; (L.Z.); (C.S.); (A.G.); (C.S.T.); (F.C.); (J.W.H.)
| | - John W. Haycock
- Department of Materials Science & Engineering, University of Sheffield, Sheffield S3 7HQ, UK; (L.Z.); (C.S.); (A.G.); (C.S.T.); (F.C.); (J.W.H.)
| | - Wandert Schaafsma
- Histocell S.L., Parque Tecnológico de Bizkaia, 801 A, 2, 48160 Derio, Spain; (W.S.); (E.G.); (B.C.)
| | - Eva González
- Histocell S.L., Parque Tecnológico de Bizkaia, 801 A, 2, 48160 Derio, Spain; (W.S.); (E.G.); (B.C.)
| | - Begoña Castro
- Histocell S.L., Parque Tecnológico de Bizkaia, 801 A, 2, 48160 Derio, Spain; (W.S.); (E.G.); (B.C.)
| | - Santos Merino
- Tekniker, C/Iñaki Goenaga 5, 20600 Eibar, Spain; (R.D.-A.); (X.M.); (M.C.M.-P.); (I.Q.)
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Aldemir Dikici B, Reilly GC, Claeyssens F. Boosting the Osteogenic and Angiogenic Performance of Multiscale Porous Polycaprolactone Scaffolds by In Vitro Generated Extracellular Matrix Decoration. ACS Appl Mater Interfaces 2020; 12:12510-12524. [PMID: 32100541 PMCID: PMC7146758 DOI: 10.1021/acsami.9b23100] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 02/26/2020] [Indexed: 05/05/2023]
Abstract
Tissue engineering (TE)-based bone grafts are favorable alternatives to autografts and allografts. Both biochemical properties and the architectural features of TE scaffolds are crucial in their design process. Synthetic polymers are attractive biomaterials to be used in the manufacturing of TE scaffolds, due to various advantages, such as being relatively inexpensive, enabling precise reproducibility, possessing tunable mechanical/chemical properties, and ease of processing. However, such scaffolds need modifications to improve their limited interaction with biological tissues. Structurally, multiscale porosity is advantageous over single-scale porosity; therefore, in this study, we have considered two key points in the design of a bone repair material; (i) manufacture of multiscale porous scaffolds made of photocurable polycaprolactone (PCL) by a combination of emulsion templating and three-dimensional (3D) printing and (ii) decoration of these scaffolds with the in vitro generated bone-like extracellular matrix (ECM) to create biohybrid scaffolds that have improved biological performance compared to PCL-only scaffolds. Multiscale porous scaffolds were fabricated, bone cells were cultured on them, and then they were decellularized. The biological performance of these constructs was tested in vitro and in vivo. Mesenchymal progenitors were seeded on PCL-only and biohybrid scaffolds. Cells not only showed improved attachment on biohybrid scaffolds but also exhibited a significantly higher rate of cell growth and osteogenic activity. The chick chorioallantoic membrane (CAM) assay was used to explore the angiogenic potential of the biohybrid scaffolds. The CAM assay indicated that the presence of the in vitro generated ECM on polymeric scaffolds resulted in higher angiogenic potential and a high degree of tissue infiltration. This study demonstrated that multiscale porous biohybrid scaffolds present a promising approach to improve bioactivity, encourage precursors to differentiate into mature bones, and to induce angiogenesis.
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Affiliation(s)
- Betül Aldemir Dikici
- Department
of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, United Kingdom
- Department
of Materials Science and Engineering, INSIGNEO Institute for In Silico
Medicine, University of Sheffield, The Pam Liversidge Building, Sheffield S1 3JD, United Kingdom
| | - Gwendolen C. Reilly
- Department
of Materials Science and Engineering, INSIGNEO Institute for In Silico
Medicine, University of Sheffield, The Pam Liversidge Building, Sheffield S1 3JD, United Kingdom
| | - Frederik Claeyssens
- Department
of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, United Kingdom
- Department
of Materials Science and Engineering, INSIGNEO Institute for In Silico
Medicine, University of Sheffield, The Pam Liversidge Building, Sheffield S1 3JD, United Kingdom
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40
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Farr N, Pashneh‐Tala S, Stehling N, Claeyssens F, Green N, Rodenburg C. Characterizing Cross‐Linking Within Polymeric Biomaterials in the SEM by Secondary Electron Hyperspectral Imaging. Macromol Rapid Commun 2020. [DOI: 10.1002/marc.202070006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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41
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Owen R, Bahmaee H, Claeyssens F, Reilly GC. Comparison of the Anabolic Effects of Reported Osteogenic Compounds on Human Mesenchymal Progenitor-derived Osteoblasts. Bioengineering (Basel) 2020; 7:E12. [PMID: 31972962 PMCID: PMC7148480 DOI: 10.3390/bioengineering7010012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/13/2020] [Accepted: 01/15/2020] [Indexed: 01/10/2023] Open
Abstract
There is variability in the reported effects of compounds on osteoblasts arising from differences in experimental design and choice of cell type/origin. This makes it difficult to discern a compound's action outside its original study and compare efficacy between compounds. Here, we investigated five compounds frequently reported as anabolic for osteoblasts (17β-estradiol (oestrogen), icariin, lactoferrin, lithium chloride, and menaquinone-4 (MK-4)) on human mesenchymal progenitors to assess their potential for bone tissue engineering with the aim of identifying a potential alternative to expensive recombinant growth factors such as bone morphogenetic protein 2 (BMP-2). Experiments were performed using the same culture conditions to allow direct comparison. The concentrations of compounds spanned two orders of magnitude to encompass the reported efficacious range and were applied continuously for 22 days. The effects on the proliferation (resazurin reduction and DNA quantification), osteogenic differentiation (alkaline phosphatase (ALP) activity), and mineralised matrix deposition (calcium and collagen quantification) were assessed. Of these compounds, only 10 µM MK-4 stimulated a significant anabolic response with 50% greater calcium deposition. Oestrogen and icariin had no significant effects, with the exception of 1 µM icariin, which increased the metabolic activity on days 8 and 22. 1000 µg/mL of lactoferrin and 10 mM lithium chloride both significantly reduced the mineralised matrix deposition in comparison to the vehicle control, despite the ALP activity being higher in lithium chloride-treated cells at day 15. This demonstrates that MK-4 is the most powerful stimulant of bone formation in hES-MPs of the compounds investigated, highlighting its potential in bone tissue engineering as a method of promoting bone formation, as well as its prospective use as an osteoporosis treatment.
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Affiliation(s)
- Robert Owen
- Department of Materials Science and Engineering, INSIGNEO Institute for In Silico Medicine, The Pam Liversidge Building, Sir Frederick Mappin Building, Mappin Street, Sheffield S1 3JD, UK; (H.B.); (F.C.); (G.C.R.)
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield S3 7HQ, UK
| | - Hossein Bahmaee
- Department of Materials Science and Engineering, INSIGNEO Institute for In Silico Medicine, The Pam Liversidge Building, Sir Frederick Mappin Building, Mappin Street, Sheffield S1 3JD, UK; (H.B.); (F.C.); (G.C.R.)
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield S3 7HQ, UK
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, INSIGNEO Institute for In Silico Medicine, The Pam Liversidge Building, Sir Frederick Mappin Building, Mappin Street, Sheffield S1 3JD, UK; (H.B.); (F.C.); (G.C.R.)
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield S3 7HQ, UK
| | - Gwendolen C. Reilly
- Department of Materials Science and Engineering, INSIGNEO Institute for In Silico Medicine, The Pam Liversidge Building, Sir Frederick Mappin Building, Mappin Street, Sheffield S1 3JD, UK; (H.B.); (F.C.); (G.C.R.)
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Dikici S, Aldemir Dikici B, Bhaloo SI, Balcells M, Edelman ER, MacNeil S, Reilly GC, Sherborne C, Claeyssens F. Assessment of the Angiogenic Potential of 2-Deoxy-D-Ribose Using a Novel in vitro 3D Dynamic Model in Comparison With Established in vitro Assays. Front Bioeng Biotechnol 2020; 7:451. [PMID: 32010677 PMCID: PMC6978624 DOI: 10.3389/fbioe.2019.00451] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/18/2019] [Indexed: 11/13/2022] Open
Abstract
Angiogenesis is a highly ordered physiological process regulated by the interaction of endothelial cells with an extensive variety of growth factors, extracellular matrix components and mechanical stimuli. One of the most important challenges in tissue engineering is the rapid neovascularization of constructs to ensure their survival after transplantation. To achieve this, the use of pro-angiogenic agents is a widely accepted approach. The study of angiogenesis has gained momentum over the last two decades. Although there are various in vitro, ex vivo, and in vivo angiogenesis models that enable testing of newly discovered pro-angiogenic agents, the problem with researching angiogenesis is the choice of the most appropriate assay. In vivo assays are the most representative and reliable models, but they are expensive, time-consuming and can cause ethical concerns whereas in vitro assays are relatively inexpensive, practical, and reproducible, but they are usually lack of enabling the study of more than one aspect of angiogenesis, and they do not fully represent the complexity of physiological angiogenesis. Therefore, there is a need for the development of an angiogenesis model that allows the study of angiogenesis under physiologically more relevant, dynamic conditions without causing ethical concerns. Accordingly, in this study, we developed 3D in vitro dynamic angiogenesis model, and we tested the angiogenic potential of 2-deoxy-D-ribose (2dDR) in comparison with vascular endothelial growth factor (VEGF) using newly developed in vitro 3D dynamic model and well-established in vitro models. Our results obtained using conventional in vitro assays demonstrated that 2dDR promoted proliferation, migration and tube formation of human aortic endothelial cells (HAECs) in a dose-dependent manner. Then, the angiogenic activity of 2dDR was further assessed using the newly developed 3D in vitro model, which enabled the monitoring of cell proliferation and infiltration simultaneously under dynamic conditions. Our results showed that the administration of 2dDR and VEGF significantly enhanced the outgrowth of HAECs and the cellular density under either static or dynamic conditions.
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Affiliation(s)
- Serkan Dikici
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Betül Aldemir Dikici
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, United States
- Department of Materials Science and Engineering, INSIGNEO Institute for In Silico Medicine, University of Sheffield, Sheffield, United Kingdom
| | - Shirin Issa Bhaloo
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Mercedes Balcells
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, United States
- Bioengineering Department, Institut Quimic de Sarria, Ramon Llull University, Barcelona, Spain
| | - Elazer R. Edelman
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, United States
- Division of Cardiovascular Medicine, Department of Medicine, Harvard Medical School, Brigham and Women's Hospital, Boston, MA, United States
| | - Sheila MacNeil
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
| | - Gwendolen C. Reilly
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Department of Materials Science and Engineering, INSIGNEO Institute for In Silico Medicine, University of Sheffield, Sheffield, United Kingdom
| | - Colin Sherborne
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Department of Materials Science and Engineering, INSIGNEO Institute for In Silico Medicine, University of Sheffield, Sheffield, United Kingdom
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Pashneh-Tala S, Moorehead R, Claeyssens F. Hybrid manufacturing strategies for tissue engineering scaffolds using methacrylate functionalised poly(glycerol sebacate). J Biomater Appl 2020; 34:1114-1130. [DOI: 10.1177/0885328219898385] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Poly(glycerol sebacate) is an attractive biomaterial for tissue engineering due to its biocompatibility, elasticity and rapid degradation rate. However, poly(glycerol sebacate) requires harsh processing conditions, involving high temperatures and vacuum for extended periods, to produce an insoluble polymer matrix. These conditions make generating accurate and intricate geometries from poly(glycerol sebacate), such as those required for tissue engineering scaffolds, difficult. Functionalising poly(glycerol sebacate) with methacrylate groups produces a photocurable polymer, poly(glycerol sebacate)-methacrylate, which can be rapidly crosslinked into an insoluble matrix. Capitalising on these improved processing capabilities, here, we present a variety of approaches for fabricating porous tissue engineering scaffolds from poly(glycerol sebacate)-methacrylate using sucrose porogen leaching combined with other manufacturing methods. Mould-based techniques were used to produce porous disk-shaped and tubular scaffolds. Porogen size was shown to influence scaffold porosity and mechanical performance, and the porous poly(glycerol sebacate)-methacrylate scaffolds supported the proliferation of primary fibroblasts in vitro. Additionally, scaffolds with spatially variable mechanical properties were generated by combining variants of poly(glycerol sebacate)-methacrylate with different stiffness. Finally, subtractive and additive manufacturing methods were developed with the capabilities to generate porous poly(glycerol sebacate)-methacrylate scaffolds from digital designs. These hybrid manufacturing strategies offer the ability to produce accurate macroscale poly(glycerol sebacate)-methacrylate scaffolds with tailored microscale porosity and spatially resolved mechanical properties suitable for a broad range of applications across tissue engineering.
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Affiliation(s)
| | - Robert Moorehead
- Kroto Research Institute, The University of Sheffield, Sheffield, UK
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Farr N, Pashneh‐Tala S, Stehling N, Claeyssens F, Green N, Rodenburg C. Characterizing Cross‐Linking Within Polymeric Biomaterials in the SEM by Secondary Electron Hyperspectral Imaging. Macromol Rapid Commun 2019; 41:e1900484. [DOI: 10.1002/marc.201900484] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/29/2019] [Indexed: 01/23/2023]
Affiliation(s)
- Nicholas Farr
- Department of Materials Science and EngineeringSir Robert Hadfield Building Mappin Street Sheffield S1 3JD UK
| | - Samand Pashneh‐Tala
- Department of Materials Science and EngineeringSir Robert Hadfield Building Mappin Street Sheffield S1 3JD UK
| | - Nicola Stehling
- Department of Materials Science and EngineeringSir Robert Hadfield Building Mappin Street Sheffield S1 3JD UK
| | - Frederik Claeyssens
- Department of Materials Science and EngineeringSir Robert Hadfield Building Mappin Street Sheffield S1 3JD UK
| | - Nicola Green
- Department of Materials Science and EngineeringSir Robert Hadfield Building Mappin Street Sheffield S1 3JD UK
- INSIGNEO Institute for In Silico MedicineThe Pam Liversidge BuildingSir Robert Hadfield Building Mappin Street Sheffield S1 3JD UK
| | - Cornelia Rodenburg
- Department of Materials Science and EngineeringSir Robert Hadfield Building Mappin Street Sheffield S1 3JD UK
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Brif A, Laity P, Claeyssens F, Holland C. Dynamic Photo-cross-linking of Native Silk Enables Macroscale Patterning at a Microscale Resolution. ACS Biomater Sci Eng 2019; 6:705-714. [DOI: 10.1021/acsbiomaterials.9b00993] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Anastasia Brif
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, U.K
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Broad Lane, Sheffield S3 7HQ, U.K
| | - Peter Laity
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, U.K
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Broad Lane, Sheffield S3 7HQ, U.K
| | - Chris Holland
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, U.K
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Lizarraga‐Valderrama LR, Taylor CS, Claeyssens F, Haycock JW, Knowles JC, Roy I. Unidirectional neuronal cell growth and differentiation on aligned polyhydroxyalkanoate blend microfibres with varying diameters. J Tissue Eng Regen Med 2019; 13:1581-1594. [PMID: 31185133 PMCID: PMC6790610 DOI: 10.1002/term.2911] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/08/2019] [Accepted: 05/10/2019] [Indexed: 01/26/2023]
Abstract
Polyhydroxyalkanoates (PHAs) are a family of prokaryotic-derived biodegradable and biocompatible natural polymers known to exhibit neuroregenerative properties. In this work, poly(3-hydroxybutyrate), P(3HB), and poly(3-hydroxyoctanoate), P(3HO), have been combined to form blend fibres for directional guidance of neuronal cell growth and differentiation. A 25:75 P(3HO)/P(3HB) blend (PHA blend) was used for the manufacturing of electrospun fibres as resorbable scaffolds to be used as internal guidance lumen structures in nerve conduits. The biocompatibility of these fibres was studied using neuronal and Schwann cells. Highly aligned and uniform fibres with varying diameters were fabricated by controlling electrospinning parameters. The resulting fibre diameters were 2.4 ± 0.3, 3.7 ± 0.3, and 13.5 ± 2.3 μm for small, medium, and large diameter fibres, respectively. The cell response to these electrospun fibres was investigated with respect to growth and differentiation. Cell migration observed on the electrospun fibres showed topographical guidance in accordance with the direction of the fibres. The correlation between fibre diameter and neuronal growth under two conditions, individually and in coculture with Schwann cells, was evaluated. Results obtained from both assays revealed that all PHA blend fibre groups were able to support growth and guide aligned distribution of neuronal cells, and there was a direct correlation between the fibre diameter and neuronal growth and differentiation. This work has led to the development of a family of unique biodegradable and highly biocompatible 3D substrates capable of guiding and facilitating the growth, proliferation, and differentiation of neuronal cells as internal structures within nerve conduits.
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Affiliation(s)
- Lorena R. Lizarraga‐Valderrama
- Applied Biotechnology Research Group, School of Life Sciences, College of Liberal Arts and SciencesUniversity of WestminsterLondonUK
| | - Caroline S. Taylor
- Department of Materials Science and EngineeringUniversity of SheffieldSheffieldUK
| | - Frederik Claeyssens
- Department of Materials Science and EngineeringUniversity of SheffieldSheffieldUK
| | - John W. Haycock
- Department of Materials Science and EngineeringUniversity of SheffieldSheffieldUK
| | - Jonathan C. Knowles
- Division of Biomaterials and Tissue EngineeringUCL Eastman Dental InstituteLondonUK
- Department of Nanobiomedical Science and BK21 Plus NBM, Global Research Center for Regenerative MedicineDankook UniversityCheonanSouth Korea
- The Discoveries Centre for Regenerative and Precision MedicineUCL CampusLondonUK
- UCL Eastman‐Korea Dental Medicine Innovation CentreDankook UniversityCheonanSouth Korea
| | - Ipsita Roy
- Applied Biotechnology Research Group, School of Life Sciences, College of Liberal Arts and SciencesUniversity of WestminsterLondonUK
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Lizarraga‐Valderrama LR, Taylor CS, Claeyssens F, Haycock JW, Knowles JC, Roy I. Cover Image. J Tissue Eng Regen Med 2019. [DOI: 10.1002/term.2978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Aldemir Dikici B, Dikici S, Reilly GC, MacNeil S, Claeyssens F. A Novel Bilayer Polycaprolactone Membrane for Guided Bone Regeneration: Combining Electrospinning and Emulsion Templating. Materials (Basel) 2019; 12:E2643. [PMID: 31434207 PMCID: PMC6721100 DOI: 10.3390/ma12162643] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 08/05/2019] [Accepted: 08/16/2019] [Indexed: 01/08/2023]
Abstract
Guided bone regeneration is a common dental implant treatment where a barrier membrane (BM) is used between epithelial tissue and bone or bone graft to prevent the invasion of the fast-proliferating epithelial cells into the defect site to be able to preserve a space for infiltration of slower-growing bone cells into the periodontal defect site. In this study, a bilayer polycaprolactone (PCL) BM was developed by combining electrospinning and emulsion templating techniques. First, a 250 µm thick polymerised high internal phase emulsion (polyHIPE) made of photocurable PCL was manufactured and treated with air plasma, which was shown to enhance the cellular infiltration. Then, four solvent compositions were investigated to find the best composition for electrospinning a nanofibrous PCL barrier layer on PCL polyHIPE. The biocompatibility and the barrier properties of the electrospun layer were demonstrated over four weeks in vitro by histological staining. Following in vitro assessment of cell viability and cell migration, cell infiltration and the potential of PCL polyHIPE for supporting blood vessel ingrowth were further investigated using an ex-ovo chick chorioallantoic membrane assay. Our results demonstrated that the nanofibrous PCL electrospun layer was capable of limiting cell infiltration for at least four weeks, while PCL polyHIPE supported cell infiltration, calcium and mineral deposition of bone cells, and blood vessel ingrowth through pores.
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Affiliation(s)
- Betül Aldemir Dikici
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield S3 7HQ, UK
| | - Serkan Dikici
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield S3 7HQ, UK
| | - Gwendolen C Reilly
- Department of Materials Science and Engineering, University of Sheffield, INSIGNEO Institute for in silico Medicine, The Pam Liversidge Building, Sheffield S1 3JD, UK
| | - Sheila MacNeil
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield S3 7HQ, UK
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, University of Sheffield, Kroto Research Institute, Sheffield S3 7HQ, UK.
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Aguilar Cosme JR, Bryant HE, Claeyssens F. Carbon dot-protoporphyrin IX conjugates for improved drug delivery and bioimaging. PLoS One 2019; 14:e0220210. [PMID: 31344086 PMCID: PMC6657888 DOI: 10.1371/journal.pone.0220210] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 07/10/2019] [Indexed: 12/27/2022] Open
Abstract
Photodynamic therapy (PDT) uses photosensitisers such as protoporphyrin IX (PpIX) to target tumours via the release of toxic singlet oxygen when irradiated. The effectivity of the treatment is limited by the innate properties of the photosensitizers; they typically exhibit inefficient accumulation in target tissue and high dark toxicity. Carbon dots (CDs) are biocompatible fluorescent nanoparticles which can improve PpIX cellular uptake and solubility. In this work, we present conjugates synthesised by host-guest encapsulation (PpIX@CD) and amide cross-linking (PpIX-CD). Characterization demonstrated conjugates have a loading efficiency of 34-48% and similar singlet oxygen production to PpIX. PpIX-containing CDs showed a 2.2 to 3.7-fold decrease in dark toxicity. PpIX-CD and PpIX@CD showed equivalent light-induced toxicity to PpIX in concentrations >1 μg/ml, leading to a 3.2 to 4.1-fold increase in photo-toxicity index (PI). The less soluble fraction of cross-linked conjugates (PpIX-CD)p did not show significant difference from PpIX. Confocal light scanning microscopy demonstrated rapid intracellular uptake and accumulation of conjugates. Our results demonstrate the variations between cross-linking strategies in CD-based conjugates, highlighting their potential as carriers in drug delivery and bioimaging applications.
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Affiliation(s)
- Jose R. Aguilar Cosme
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
| | - Helen E. Bryant
- Department of Oncology & Metabolism, The Medical School, University of Sheffield, Sheffield, United Kingdom
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
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Dikici S, Claeyssens F, MacNeil S. Decellularised baby spinach leaves and their potential use in tissue engineering applications: Studying and promoting neovascularisation. J Biomater Appl 2019; 34:546-559. [DOI: 10.1177/0885328219863115] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Serkan Dikici
- Kroto Research Institute, University of Sheffield, Sheffield, UK
| | | | - Sheila MacNeil
- Kroto Research Institute, University of Sheffield, Sheffield, UK
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