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Specificities of Scanning Electron Microscopy and Histological Methods in Assessing Cell-Engineered Construct Effectiveness for the Recovery of Hyaline Cartilage. Methods Protoc 2021; 4:mps4040077. [PMID: 34842796 PMCID: PMC8628887 DOI: 10.3390/mps4040077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/11/2021] [Accepted: 10/14/2021] [Indexed: 11/18/2022] Open
Abstract
Damage to the hyaline layer of the articular surface is an urgent problem for millions of people around the world. At present, a large number of experimental methods are being developed to address this problem, including the transplantation of a cell-engineered construct (CEC) composed of a biodegradable scaffold with a premixed cell culture into the damaged area of the articular surface. However, current methods for analyzing the effectiveness of such CECs have significant limitations. This study aimed to compare the SEM technique, classical histology, and cryosectioning for the analysis of CECs transplanted to hyaline cartilage.
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2
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de Andrade Pinto SA, de Nadai Dias FJ, Brasil Camargo Cardoso G, Dos Santos Junior AR, de Aro AA, Pino DS, Meneghetti DH, Vitti RP, Dos Santos GMT, de Carvalho Zavaglia CA. Polycaprolactone/Beta-Tricalcium Phosphate Scaffolds Obtained via Rotary Jet-Spinning: in vitro and in vivo Evaluation. Cells Tissues Organs 2021; 211:477-491. [PMID: 33691307 DOI: 10.1159/000511570] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 09/10/2020] [Indexed: 11/19/2022] Open
Abstract
This study aimed to evaluate in vitro and in vivo polymeric membranes obtained by a rotary jet-spinning process for the repair of critical bone defects in the calvaria of Wistar rats, for future use in tissue engineering. Experimental sample collections were performed on the 30, 60 and 90th postoperative days, and the analyses performed were histomorphometric, immunohistochemistry, and western blotting. Reducing inflammatory infiltrate in all groups and experimental periods, angiogenesis on the 30th day did not show any difference between the groups, on the 60th day, 5% polycaprolactone/beta-tricalcium phosphate(PCL/β-TCP) was high compared to control (C), and on the 90th day, the same group reduced when compared to C and 10% PCL/β-TCP. The fibroplasia presented oscillations in every segment; on the 30th and 60th day, there was an increase in 5% PCL/β-TCP, which decreased by the 90th day compared to group C. 10% PCL/β-TCP decreased compared to C on the 60th and 90th day. The percentage of the collagen area remained high in all groups and all experimental periods. Immunohistochemistry quantifications showed variations in bone metabolism suggesting new bone formation. The 5 and 10% PCL/β-TCP scaffold were promising for the bone regeneration process because they participated in the modulation of inflammation, angiogenesis, fibroplasia, and collagenosis.
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Affiliation(s)
- Stella Aparecida de Andrade Pinto
- Department of Materials Engineering, University of Campinas, Campinas, Brazil, .,School of Dentistry, Herminio Ometto University Center, Araras, Brazil,
| | - Francisco José de Nadai Dias
- Department of Materials Engineering, University of Campinas, Campinas, Brazil.,School of Dentistry, Herminio Ometto University Center, Araras, Brazil
| | | | | | - Andréa Aparecida de Aro
- School of Dentistry, Herminio Ometto University Center, Araras, Brazil.,Graduate Program of Biomedical Sciences, Herminio Ometto University Center, Araras, Brazil
| | - Danilo Siqueira Pino
- Department of Materials Engineering, University of Campinas, Campinas, Brazil.,School of Dentistry, Herminio Ometto University Center, Araras, Brazil
| | - Damaris Helena Meneghetti
- School of Dentistry, Herminio Ometto University Center, Araras, Brazil.,Graduate Program of Biomedical Sciences, Herminio Ometto University Center, Araras, Brazil
| | - Rafael Pino Vitti
- School of Dentistry, Herminio Ometto University Center, Araras, Brazil
| | - Gláucia Maria Tech Dos Santos
- School of Dentistry, Herminio Ometto University Center, Araras, Brazil.,Graduate Program of Biomedical Sciences, Herminio Ometto University Center, Araras, Brazil
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3
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Catoira MC, González-Payo J, Fusaro L, Ramella M, Boccafoschi F. Natural hydrogels R&D process: technical and regulatory aspects for industrial implementation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2020; 31:64. [PMID: 32696261 PMCID: PMC7374448 DOI: 10.1007/s10856-020-06401-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 07/08/2020] [Indexed: 05/17/2023]
Abstract
Since hydrogel therapies have been introduced into clinic treatment procedures, the biomedical industry has to face the technology transfer and the scale-up of the processes. This will be key in the roadmap of the new technology implementation. Transfer technology and scale-up are already known for some applications but other applications, such as 3D printing, are still challenging. Decellularized tissues offer a lot of advantages when compared to other natural gels, for example they display enhanced biological properties, due to their ability to preserve natural molecules. For this reason, even though their use as a source for bioinks represents a challenge for the scale-up process, it is very important to consider the advantages that originate with overcoming this challenge. Therefore, many aspects that influence the scaling of the industrial process should be considered, like the addition of drugs or cells to the hydrogel, also, the gelling process is important to determine the chemical and physical parameters that must be controlled in order to guarantee a successful process. Legal aspects are also crucial when carrying out the scale-up of the process since they determine the industrial implementation success from the regulatory point of view. In this context, the new law Regulation (EU) 2017/745 on biomedical devices will be considered. This review summarizes the different aspects, including the legal ones, that should be considered when scaling up hydrogels of natural origin, in order to balance these different aspects and to optimize the costs in terms of raw materials and engine.
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Affiliation(s)
- Marta Calvo Catoira
- Center for Translational Research on Autoimmune & Allergic Diseases-CAAD, 28100, Novara, Italy
- Tissuegraft srl, 28100, Novara, Italy
| | - Javier González-Payo
- Telecomunicación, Department of Signal Theory and Communications, University of Vigo, 36310, Vigo, Spain
| | - Luca Fusaro
- Tissuegraft srl, 28100, Novara, Italy
- Department of Health Sciences, University of Piemonte Orientale, 28100, Novara, Italy
| | | | - Francesca Boccafoschi
- Center for Translational Research on Autoimmune & Allergic Diseases-CAAD, 28100, Novara, Italy.
- Tissuegraft srl, 28100, Novara, Italy.
- Department of Health Sciences, University of Piemonte Orientale, 28100, Novara, Italy.
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Wu X, Jia Y, Sun X, Wang J. Tissue engineering in female pelvic floor reconstruction. Eng Life Sci 2020; 20:275-286. [PMID: 32647506 PMCID: PMC7336160 DOI: 10.1002/elsc.202000003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 03/06/2020] [Accepted: 03/08/2020] [Indexed: 12/16/2022] Open
Abstract
Pelvic organ prolapse is a common and frequently occurring disease in middle-aged and elderly women. Mesh implantation is an ideal surgical treatment. The polypropylene mesh commonly used in clinical practice has good mechanical properties, but there are long-term complications. The application of tissue engineering technology in the treatment of pelvic organ prolapse disease can not only meet the mechanical requirements of pelvic floor support, but also be more biocompatible than traditional polypropylene mesh, and can promote tissue repair to a certain extent. In this paper, the progress of tissue engineering was summarized to understand the application of tissue engineering in the treatment of pelvic organ prolapse disease and will help in research.
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Affiliation(s)
- Xiaotong Wu
- Department of Obstetrics and GynecologyPeking University People's HospitalBeijingP. R. China
- Beijing Key Laboratory of Female Pelvic Floor DisordersBeijingP. R. China
| | - YuanYuan Jia
- Department of Obstetrics and GynecologyPeking University People's HospitalBeijingP. R. China
- Beijing Key Laboratory of Female Pelvic Floor DisordersBeijingP. R. China
| | - Xiuli Sun
- Department of Obstetrics and GynecologyPeking University People's HospitalBeijingP. R. China
- Beijing Key Laboratory of Female Pelvic Floor DisordersBeijingP. R. China
| | - Jianliu Wang
- Department of Obstetrics and GynecologyPeking University People's HospitalBeijingP. R. China
- Beijing Key Laboratory of Female Pelvic Floor DisordersBeijingP. R. China
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5
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Electrospun Schizophyllan/polyvinyl alcohol blend nanofibrous scaffold as potential wound healing. Int J Biol Macromol 2019; 127:27-38. [DOI: 10.1016/j.ijbiomac.2018.12.256] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 12/22/2018] [Accepted: 12/27/2018] [Indexed: 01/28/2023]
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6
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Saburi E, Islami M, Hosseinzadeh S, Moghadam AS, Mansour RN, Azadian E, Joneidi Z, Nikpoor AR, Ghadiani MH, Khodaii Z, Ardeshirylajimi A. In vitro osteogenic differentiation potential of the human induced pluripotent stem cells augments when grown on Graphene oxide-modified nanofibers. Gene 2019; 696:72-79. [PMID: 30772518 DOI: 10.1016/j.gene.2019.02.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/09/2019] [Accepted: 02/01/2019] [Indexed: 01/08/2023]
Abstract
Due to the several limitations that surgeons are faced during bone tissue implantation there are daily increases in introducing new cell-co-polymer composites for use in bone tissue engineering approaches. In this study tried to develop a suitable nanostructured bio-composite for enhancing osteogenic differentiation of the human induced pluripotent stem cells (iPSCs). Polyvinylidene fluoride-Graphene oxide (PVDF-GO) nanofibers was fabricated by electrospinning and then characterized using scanning electron microscope, tensile and viability assays. After that osteogenic differentiation of the iPSCs was investigated in three groups, including PVDF, PVDF-GO and tissue culture plate as a control group. Alkaline phosphatase activity and calcium content of the iPSCs cultured on PVDF-GO were significantly higher than those cultured on other groups. In addition, Runx2, osteocalcin and osteonectin genes were up regulated in iPSCs cultured on PVDF-GO significantly higher than those cells cultured on PVDF and control. Finally, osteocalcin and osteopontin proteins expression evaluated and the results confirmed higher osteoinductivity of the PVDF-GO nanofibers in comparison with the PVDF nanofibers. According to the results, it was demonstrated that PVDF-GO nanofibers have a great osteoinductive potential and taking together iPSCs-PVDF-GO nanofibrous construct can be an appropriate bio-implant to use for bone tissue engineering applications.
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Affiliation(s)
- Ehsan Saburi
- Immunogenetic and Cell Culture Department, Immunology Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Islami
- Dietary Supplements and Probiotic Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Simzar Hosseinzadeh
- Department of Tissue engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Shapouri Moghadam
- Bu-Ali Research Institute, Department of Immunogenetics, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Esmaeel Azadian
- Department of Tissue engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zeinab Joneidi
- Department of Genetics and Molecular Medicine, Zanjan University of Medical Science, Zanjan, Iran
| | - Amin Reza Nikpoor
- Immunogenetic and Cell Culture Department, Immunology Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Immunology, Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Mohammad Hassan Ghadiani
- Department of Nephrology, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zohreh Khodaii
- Dietary Supplements and Probiotic Research Center, Alborz University of Medical Sciences, Karaj, Iran.
| | - Abdolreza Ardeshirylajimi
- Department of Tissue engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Morel A, Domaschke S, Urundolil Kumaran V, Alexeev D, Sadeghpour A, Ramakrishna S, Ferguson S, Rossi R, Mazza E, Ehret A, Fortunato G. Correlating diameter, mechanical and structural properties of poly(l-lactide) fibres from needleless electrospinning. Acta Biomater 2018; 81:169-183. [PMID: 30273744 DOI: 10.1016/j.actbio.2018.09.055] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 08/16/2018] [Accepted: 09/27/2018] [Indexed: 10/28/2022]
Abstract
The development and application of nanofibres requires a thorough understanding of the mechanical properties on a single fibre level including respective modelling tools for precise fibre analysis. This work presents a mechanical and morphological study of poly-l-lactide nanofibres developed by needleless electrospinning. Atomic force microscopy (AFM) and micromechanical testing (MMT) were used to characterise the mechanical response of the fibres within a diameter range of 200-1400 nm. Young's moduli E determined by means of both methods are in sound agreement and show a strong increase for thinner fibres below a critical diameter of 800 nm. Similar increasing trends for yield stress and hardening modulus were measured by MMT. Finite element analyses show that the common practice of modelling three-point bending tests with either double supported or double clamped beams is prone to significant bias in the determined elastic properties, and that the latter is a good approximation only for small diameters. Therefore, an analytical formula based on intermediate boundary conditions is proposed that is valid for the whole tested range of fibre diameters, providing a consistently low error in axial Young's modulus below 10%. The analysis of fibre morphology by differential scanning calorimetry and 2D wide-angle X-ray scattering revealed increasing polymer chains alignment in the amorphous phase and higher crystallinity of fibres for decreasing diameter. The combination of these observations with the mechanical characterisation suggests a linear relationship between Young's modulus and both crystallinity and molecular orientation in the amorphous phase. STATEMENT OF SIGNIFICANCE: Fibrous membranes have rapidly growing use in various applications, each of which comes with specific property requirements. However, the development and production of nanofibre membranes with dedicated mechanical properties is challenging, in particular with techniques suitable for industrial scales such as needleless electrospinning. It is therefore a key step to understand the mechanical and structural characteristics of single nanofibres developed in this process, and to this end, the present work presents changes of internal fibre structure and mechanical properties with diameter, based on dedicated models. Special attention was given to the commonly used models for analyzing Young's modulus of single nanofibers in three-point bending tests, which are shown to be prone to large errors, and an improved robust approach is proposed.
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Kim JI, Kim JY, Park CH. Fabrication of transparent hemispherical 3D nanofibrous scaffolds with radially aligned patterns via a novel electrospinning method. Sci Rep 2018; 8:3424. [PMID: 29467436 PMCID: PMC5821851 DOI: 10.1038/s41598-018-21618-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 02/07/2018] [Indexed: 12/13/2022] Open
Abstract
Tissue engineering has significantly contributed to the development of optimal treatments for individual injury sites based on their unique functional and histologic properties. Human organs and tissue have three-dimensional (3D) morphologies; for example, the morphology of the eye is a spherical shape. However, most conventional electrospinning equipment is only capable of fabricating a two-dimensional (2D) structured fibrous scaffold and no report is available on a 3D electrospinning method to fabricate a hemispherical scaffold to mimic the native properties of the cornea, including microscopic to macroscopic morphology and transparency. We proposed a novel electrospinning method using a single nonconductive hemispherical device and a metal pin. A designed peg-top shaped collector, a hemispherical nonconductive device with a metal pin in the center and copper wire forming a circle around at the edge was attached to a conventional conductive collector. A 3D hemispherical transparent scaffold with radially aligned nanofibers was successfully fabricated with the designed peg-top collector. In summary, our fabricated 3D electrospun scaffold is expected to be suitable for the treatment of injuries of ocular tissues owing to the hemispherical shape and radially aligned nanofibers which can guide the direction of the main collagen and cellular actin filament in the extracellular matrix.
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Affiliation(s)
- Jeong In Kim
- Department of Bionanosystem Engineering, Graduate School, Chonbuk National University, Jeonju, 561-756, Republic of Korea
| | - Ju Yeon Kim
- Division of Mechanical Design Engineering, College of Engineering, Chonbuk National University, Jeonju, 561-756, Republic of Korea
| | - Chan Hee Park
- Department of Bionanosystem Engineering, Graduate School, Chonbuk National University, Jeonju, 561-756, Republic of Korea.
- Division of Mechanical Design Engineering, College of Engineering, Chonbuk National University, Jeonju, 561-756, Republic of Korea.
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9
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Vashaghian M, Zaat SJ, Smit TH, Roovers JP. Biomimetic implants for pelvic floor repair. Neurourol Urodyn 2017; 37:566-580. [PMID: 28799675 DOI: 10.1002/nau.23367] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 05/15/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND Polypropylene implants are used for the reconstructive surgery of urogynaecological disorders like pelvic organ prolapse, but severe complications associated with their use have been reported. There is evidence that surface properties and a difference in mechanical stiffness between the implant and the host tissue contribute to these adverse events. Electrospinning is an innovative engineering alternative that provides a biomimetic microstructure for implants, resulting in a different mechano-biological performance. AIM The main objective of this review is to inform about the potential of electrospun matrices as an alternative modality for pelvic floor repair. METHODS Publications with the following studies of electrospun matrices were reviewed: (i) the technique; (ii) in vitro use for soft tissue engineering; (iii) in vivo use for reconstruction of soft tissues in animals; and (iv) clinical use in humans. RESULTS Electrospun matrices provide a synthetic mimic of natural extracellular matrix (ECM), favoring cellular attachment, proliferation and matrix deposition, through which a proper, low-inflammatory tissue-implant interaction can be established. Electrospun sheets can also be created with sufficient mechanical strength and stiffness for usage in prolapse surgery. CONCLUSION Electrospun matrices mimic the structural topography of the extracellular matrix and can be functionalized for better biological performance. As such, they have great potential for the next generation of urogynecological implants. However, their long-term safety and efficacy must still be established in vivo.
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Affiliation(s)
- Mahshid Vashaghian
- Department of Obstetrics & Gynaecology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Sebastianus J Zaat
- Department of Medical Microbiology, Center for Infection and Immunity Amsterdam (CINIMA), Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Theodoor H Smit
- Department of Medical Biology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Jan-Paul Roovers
- Department of Obstetrics & Gynaecology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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10
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Skin Tissue Engineering: Biological Performance of Electrospun Polymer Scaffolds and Translational Challenges. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2017. [DOI: 10.1007/s40883-017-0035-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Rahman S, Carter P, Bhattarai N. Aloe Vera for Tissue Engineering Applications. J Funct Biomater 2017; 8:E6. [PMID: 28216559 PMCID: PMC5371879 DOI: 10.3390/jfb8010006] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 02/05/2017] [Accepted: 02/07/2017] [Indexed: 01/15/2023] Open
Abstract
Aloe vera, also referred as Aloe barbadensis Miller, is a succulent plant widely used for biomedical, pharmaceutical and cosmetic applications. Aloe vera has been used for thousands of years. However, recent significant advances have been made in the development of aloe vera for tissue engineering applications. Aloe vera has received considerable attention in tissue engineering due to its biodegradability, biocompatibility, and low toxicity properties. Aloe vera has been reported to have many biologically active components. The bioactive components of aloe vera have effective antibacterial, anti-inflammatory, antioxidant, and immune-modulatory effects that promote both tissue regeneration and growth. The aloe vera plant, its bioactive components, extraction and processing, and tissue engineering prospects are reviewed in this article. The use of aloe vera as tissue engineering scaffolds, gels, and films is discussed, with a special focus on electrospun nanofibers.
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Affiliation(s)
- Shekh Rahman
- Department of Chemical, Biological and Bioengineering, North Carolina A&T State University, Greensboro, NC 27411, USA.
| | - Princeton Carter
- Department of Chemical, Biological and Bioengineering, North Carolina A&T State University, Greensboro, NC 27411, USA.
| | - Narayan Bhattarai
- Department of Chemical, Biological and Bioengineering, North Carolina A&T State University, Greensboro, NC 27411, USA.
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12
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Scaling-Up Techniques for the Nanofabrication of Cell Culture Substrates via Two-Photon Polymerization for Industrial-Scale Expansion of Stem Cells. MATERIALS 2017; 10:ma10010066. [PMID: 28772424 PMCID: PMC5344595 DOI: 10.3390/ma10010066] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 01/05/2017] [Accepted: 01/10/2017] [Indexed: 01/28/2023]
Abstract
Stem-cell-based therapies require a high number (106–109) of cells, therefore in vitro expansion is needed because of the initially low amount of stem cells obtainable from human tissues. Standard protocols for stem cell expansion are currently based on chemically-defined culture media and animal-derived feeder-cell layers, which expose cells to additives and to xenogeneic compounds, resulting in potential issues when used in clinics. The two-photon laser polymerization technique enables three-dimensional micro-structures to be fabricated, which we named synthetic nichoids. Here we review our activity on the technological improvements in manufacturing biomimetic synthetic nichoids and, in particular on the optimization of the laser-material interaction to increase the patterned area and the percentage of cell culture surface covered by such synthetic nichoids, from a low initial value of 10% up to 88% with an optimized micromachining time. These results establish two-photon laser polymerization as a promising tool to fabricate substrates for stem cell expansion, without any chemical supplement and in feeder-free conditions for potential therapeutic uses.
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13
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Rowland DCL, Aquilina T, Klein A, Hakimi O, Alexis-Mouthuy P, Carr AJ, Snelling SJB. A comparative evaluation of the effect of polymer chemistry and fiber orientation on mesenchymal stem cell differentiation. J Biomed Mater Res A 2016; 104:2843-53. [PMID: 27399850 PMCID: PMC5053290 DOI: 10.1002/jbm.a.35829] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 05/26/2016] [Accepted: 06/27/2016] [Indexed: 11/30/2022]
Abstract
Bioengineered tissue scaffolds in combination with cells hold great promise for tissue regeneration. The aim of this study was to determine how the chemistry and fiber orientation of engineered scaffolds affect the differentiation of mesenchymal stem cells (MSCs). Adipogenic, chondrogenic, and osteogenic differentiation on aligned and randomly orientated electrospun scaffolds of Poly (lactic‐co‐glycolic) acid (PLGA) and Polydioxanone (PDO) were compared. MSCs were seeded onto scaffolds and cultured for 14 days under adipogenic‐, chondrogenic‐, or osteogenic‐inducing conditions. Cell viability was assessed by alamarBlue metabolic activity assays and gene expression was determined by qRT‐PCR. Cell‐scaffold interactions were visualized using fluorescence and scanning electron microscopy. Cells grew in response to scaffold fiber orientation and cell viability, cell coverage, and gene expression analysis showed that PDO supports greater multilineage differentiation of MSCs. An aligned PDO scaffold supports highest adipogenic and osteogenic differentiation whereas fiber orientation did not have a consistent effect on chondrogenesis. Electrospun scaffolds, selected on the basis of fiber chemistry and alignment parameters could provide great therapeutic potential for restoration of fat, cartilage, and bone tissue. This study supports the continued investigation of an electrospun PDO scaffold for tissue repair and regeneration and highlights the potential of optimizing fiber orientation for improved utility. © 2016 The Authors Journal of Biomedical Materials Research Part A Published by Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 2843–2853, 2016.
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Affiliation(s)
- David C L Rowland
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Thomas Aquilina
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Andrei Klein
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Osnat Hakimi
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Pierre Alexis-Mouthuy
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Andrew J Carr
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Sarah J B Snelling
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom.
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14
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Biocompatible surgical meshes based on decellularized human amniotic membrane. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 54:112-9. [DOI: 10.1016/j.msec.2015.05.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 04/06/2015] [Accepted: 05/02/2015] [Indexed: 11/24/2022]
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15
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Farouz Y, Chen Y, Terzic A, Menasché P. Concise Review: Growing Hearts in the Right Place: On the Design of Biomimetic Materials for Cardiac Stem Cell Differentiation. Stem Cells 2015; 33:1021-35. [DOI: 10.1002/stem.1929] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 11/10/2014] [Accepted: 12/01/2014] [Indexed: 12/25/2022]
Affiliation(s)
- Yohan Farouz
- Department of Chemistry, Paris Sciences et Lettres, Ecole Normale Supérieure de Paris; CNRS UMR; Paris France
- Sorbonne Paris Cité; Paris Descartes University; Paris France
- INSERM U970; Paris France
| | - Yong Chen
- Department of Chemistry, Paris Sciences et Lettres, Ecole Normale Supérieure de Paris; CNRS UMR; Paris France
| | | | - Philippe Menasché
- Sorbonne Paris Cité; Paris Descartes University; Paris France
- INSERM U970; Paris France
- Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou; Department of Cardiovascular Surgery; Paris France
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16
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He X, Feng B, Huang C, Wang H, Ge Y, Hu R, Yin M, Xu Z, Wang W, Fu W, Zheng J. Electrospun gelatin/polycaprolactone nanofibrous membranes combined with a coculture of bone marrow stromal cells and chondrocytes for cartilage engineering. Int J Nanomedicine 2015; 10:2089-99. [PMID: 25834428 PMCID: PMC4370944 DOI: 10.2147/ijn.s79461] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Electrospinning has recently received considerable attention, showing notable potential as a novel method of scaffold fabrication for cartilage engineering. The aim of this study was to use a coculture strategy of chondrocytes combined with electrospun gelatin/polycaprolactone (GT/PCL) membranes, instead of pure chondrocytes, to evaluate the formation of cartilaginous tissue. We prepared the GT/PCL membranes, seeded bone marrow stromal cell (BMSC)/chondrocyte cocultures (75% BMSCs and 25% chondrocytes) in a sandwich model in vitro, and then implanted the constructs subcutaneously into nude mice for 12 weeks. Gross observation, histological and immunohistological evaluation, glycosaminoglycan analyses, Young’s modulus measurement, and immunofluorescence staining were performed postimplantation. We found that the coculture group formed mature cartilage-like tissue, with no statistically significant difference from the chondrocyte group, and labeled BMSCs could differentiate into chondrocyte-like cells under the chondrogenic niche of chondrocytes. This entire strategy indicates that GT/PCL membranes are also a suitable scaffold for stem cell-based cartilage engineering and may provide a potentially clinically feasible approach for cartilage repairs.
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Affiliation(s)
- Xiaomin He
- Department of Pediatric Cardiothoracic Surgery, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Bei Feng
- Department of Pediatric Cardiothoracic Surgery, Shanghai Jiao Tong University, Shanghai, People's Republic of China ; Institute of Pediatric Translational Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Chuanpei Huang
- Department of Pediatric Cardiothoracic Surgery, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Hao Wang
- Department of Pediatric Cardiothoracic Surgery, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Yang Ge
- Department of Pediatric Cardiothoracic Surgery, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Renjie Hu
- Department of Pediatric Cardiothoracic Surgery, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Meng Yin
- Department of Pediatric Cardiothoracic Surgery, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Zhiwei Xu
- Department of Pediatric Cardiothoracic Surgery, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Wei Wang
- Department of Pediatric Cardiothoracic Surgery, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Wei Fu
- Department of Pediatric Cardiothoracic Surgery, Shanghai Jiao Tong University, Shanghai, People's Republic of China ; Institute of Pediatric Translational Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Jinghao Zheng
- Department of Pediatric Cardiothoracic Surgery, Shanghai Jiao Tong University, Shanghai, People's Republic of China
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Smith MM, Melrose J. Proteoglycans in Normal and Healing Skin. Adv Wound Care (New Rochelle) 2015; 4:152-173. [PMID: 25785238 DOI: 10.1089/wound.2013.0464] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Indexed: 02/04/2023] Open
Abstract
Significance: Proteoglycans have a distinct spatial localization in normal skin and are essential for the correct structural development, organization, hydration, and functional properties of this tissue. The extracellular matrix (ECM) is no longer considered to be just an inert supportive material but is a source of directive, spatial and temporal, contextual information to the cells via components such as the proteoglycans. There is a pressing need to improve our understanding of how these important molecules functionally interact with other matrix structures, cells and cellular mediators in normal skin and during wound healing. Recent Advances: New antibodies to glycosaminoglycan side chain components of skin proteoglycans have facilitated the elucidation of detailed localization patterns within skin. Other studies have revealed important proliferative activities of proteinase-generated fragments of proteoglycans and other ECM components (matricryptins). Knockout mice have further established the functional importance of skin proteoglycans in the assembly and homeostasis of the normal skin ECM. Critical Issues: Our comprehension of the molecular and structural complexity of skin as a complex, dynamic, constantly renewing, layered connective tissue is incomplete. The impact of changes in proteoglycans on skin pathology and the wound healing process is recognized as an important area of pathobiology and is an area of intense investigation. Future Directions: Advanced technology is allowing the development of new artificial skins. Recent knowledge on skin proteoglycans can be used to incorporate these molecules into useful adjunct therapies for wound healing and for maintenance of optimal tissue homeostasis in aging skin.
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Affiliation(s)
- Margaret Mary Smith
- Raymond Purves Research Laboratories, Kolling Institute (University of Sydney), Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - James Melrose
- Raymond Purves Research Laboratories, Kolling Institute (University of Sydney), Royal North Shore Hospital, St Leonards, New South Wales, Australia
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18
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Alamein MA, Wolvetang EJ, Ovchinnikov DA, Stephens S, Sanders K, Warnke PH. Polymeric nanofibrous substrates stimulate pluripotent stem cells to form three-dimensional multilayered patty-like spheroids in feeder-free culture and maintain their pluripotency. J Tissue Eng Regen Med 2014; 9:1078-83. [DOI: 10.1002/term.1960] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 07/22/2014] [Accepted: 09/17/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Mohammad A. Alamein
- Clem Jones Research Centre for Stem Cells and Tissue Regenerative Therapies; Bond University; Gold Coast Queensland Australia
- Faciomaxillary and Regenerative Surgery; Griffith University; Gold Coast Queensland Australia
| | - Ernst J. Wolvetang
- Australian Institute for Bioengineering and Nanotechnology; University of Queensland; Brisbane Queensland Australia
| | - Dmitry A. Ovchinnikov
- Australian Institute for Bioengineering and Nanotechnology; University of Queensland; Brisbane Queensland Australia
| | - Sebastien Stephens
- Clem Jones Research Centre for Stem Cells and Tissue Regenerative Therapies; Bond University; Gold Coast Queensland Australia
- Faciomaxillary and Regenerative Surgery; Griffith University; Gold Coast Queensland Australia
| | - Katherine Sanders
- Faciomaxillary and Regenerative Surgery; Griffith University; Gold Coast Queensland Australia
| | - Patrick H. Warnke
- Clem Jones Research Centre for Stem Cells and Tissue Regenerative Therapies; Bond University; Gold Coast Queensland Australia
- Faciomaxillary and Regenerative Surgery; Griffith University; Gold Coast Queensland Australia
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19
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Three-dimensional polycaprolactone scaffold via needleless electrospinning promotes cell proliferation and infiltration. Colloids Surf B Biointerfaces 2014; 121:432-43. [DOI: 10.1016/j.colsurfb.2014.06.034] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 04/16/2014] [Accepted: 06/04/2014] [Indexed: 11/18/2022]
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Reynolds NP, Charnley M, Mezzenga R, Hartley PG. Engineered lysozyme amyloid fibril networks support cellular growth and spreading. Biomacromolecules 2014; 15:599-608. [PMID: 24432698 DOI: 10.1021/bm401646x] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Fibrous networks assembled from synthetic peptides are promising candidates for biomimetic cell culture platforms and implantable biomaterials. The ability of the materials to reproduce physiological cell-matrix interactions is essential. However, the synthetic complexity of such systems limits their applications, thus alternative materials are desirable. Here, we design lysozyme derived amyloid fibril networks with controllable topographies, and perform a comprehensive study of the response of cultured fibroblast and epithelial cells. At high surface coverage a favorable increase in spreading and the generation of focal adhesions was observed, due to a combination of biomimetic chemistry and morphology. Their ease of synthesis, makes the nanoscale fibrils presented here ideal materials for future clinical applications whereby large volumes of biomimetic biomaterials are required. Furthermore, the surface chemistry of the fibrils is sufficient for the promotion of focal adhesions with cultured cells, eliminating the need for complex protocols for fibril decoration with bioactive moieties.
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Affiliation(s)
- Nicholas P Reynolds
- CSIRO, Materials Science and Engineering, Private Bag 10, Bayview Avenue, Clayton, Victoria 3169, Australia
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Current treatment limitations in age-related macular degeneration and future approaches based on cell therapy and tissue engineering. J Ophthalmol 2014; 2014:510285. [PMID: 24672707 PMCID: PMC3941782 DOI: 10.1155/2014/510285] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 12/10/2013] [Indexed: 01/01/2023] Open
Abstract
Age-related macular degeneration (AMD) is the leading cause of blindness in the Western world. With an ageing population, it is anticipated that the number of AMD cases will increase dramatically, making a solution to this debilitating disease an urgent requirement for the socioeconomic future of the European Union and worldwide. The present paper reviews the limitations of the current therapies as well as the socioeconomic impact of the AMD. There is currently no cure available for AMD, and even palliative treatments are rare. Treatment options show several side effects, are of high cost, and only treat the consequence, not the cause of the pathology. For that reason, many options involving cell therapy mainly based on retinal and iris pigment epithelium cells as well as stem cells are being tested. Moreover, tissue engineering strategies to design and manufacture scaffolds to mimic Bruch's membrane are very diverse and under investigation. Both alternative therapies are aimed to prevent and/or cure AMD and are reviewed herein.
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Primordium of an artificial Bruch's membrane made of nanofibers for engineering of retinal pigment epithelium cell monolayers. Acta Biomater 2013; 9:9414-22. [PMID: 23917149 DOI: 10.1016/j.actbio.2013.07.029] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 07/22/2013] [Accepted: 07/24/2013] [Indexed: 01/24/2023]
Abstract
Transplanted retinal pigment epithelium (RPE) cells hold promise for treatment of age-related macular degeneration (AMD) and Stargardt disease (SD), but it is conceivable that the degenerated host Bruch's membrane (BM) as a natural substrate for RPE might not optimally support transplanted cell survival with correct cellular organization. We fabricated novel ultrathin three-dimensional (3-D) nanofibrous membranes from collagen type I and poly(lactic-co-glycolic acid) (PLGA) by an advanced clinical-grade needle-free electrospinning process. The nanofibrillar 3-D networks closely mimicked the fibrillar architecture of the native inner collagenous layer of human BM. Human RPE cells grown on our nanofibrous membranes bore a striking resemblance to native human RPE. They exhibited a correctly orientated monolayer with a polygonal cell shape and abundant sheet-like microvilli on their apical surfaces. RPE cells built tight junctions and expressed RPE65 protein. Flat 2-D PLGA film and cover glass as controls delivered inferior RPE layers. Our nanofibrous membranes may imitate the natural BM to such extent that they allow for the engineering of an in vivo-like human RPE monolayer that maintains the natural biofunctional characteristics. Such ultrathin membranes may provide a promising vehicle for a functional RPE cell monolayer implantation in the subretinal space in patients with AMD or SD.
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