1
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Vieira T, Afonso AF, Correia C, Henriques C, Borges JP, Silva JC. Electrospun poly(lactic acid) membranes with defined pore size to enhance cell infiltration. Heliyon 2024; 10:e36091. [PMID: 39224377 PMCID: PMC11367500 DOI: 10.1016/j.heliyon.2024.e36091] [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: 05/27/2024] [Revised: 08/08/2024] [Accepted: 08/09/2024] [Indexed: 09/04/2024] Open
Abstract
Electrospun membranes are compact structures with small pore sizes that hinder cell infiltration, resulting in membranes with cells attached only to the external surface rather than throughout the entire volume. Thus, there is a need to increase the pore size of electrospun membranes maintaining their structural similarity to the extracellular matrix. In this work, we used glucose crystals embedded in polyethylene oxide (PEO) fibers to create large pores in poly(lactic acid) (PLA) electrospun membranes to allow for cellular infiltration. The PEO fibers containing glucose crystals of different sizes (>50, 50-100 and 100-150 μm) and in varying concentrations (10, 15 and 20 %) were co-electrospun with PLA fibers and subsequently leached out using distilled water. PLA fibrous membranes without glucose crystals were also produced as controls. The membranes were examined for their morphology, mechanical properties, and potential to support the proliferation of fibroblasts. In addition, the immune response to the membranes was evaluated using monocyte-derived macrophages. The glucose crystals were uniformly distributed in the PLA membranes and their removal created open pores without collapsing the structure. Although a reduced Young's modulus was observed for membranes produced using higher glucose crystal concentrations and larger crystal sizes, the structural integrity remained intact, and the values are still suitable for tissue engineering. In vitro results showed that the scaffolds supported the adhesion and proliferation of fibroblasts and the pores created in the PLAmembranes were large enough for fibroblasts infiltration and colonization of the entire scaffold without inducing an inflammatory response.
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Affiliation(s)
- Tânia Vieira
- Centro de Investigação de Materiais, Institute for Nanostructures, Nanomodelling and Nanofabrication, CENIMAT-I3N, Portugal
- Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal
| | - Ana Filipa Afonso
- Centro de Investigação de Materiais, Institute for Nanostructures, Nanomodelling and Nanofabrication, CENIMAT-I3N, Portugal
- Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal
| | - Catarina Correia
- Centro de Investigação de Materiais, Institute for Nanostructures, Nanomodelling and Nanofabrication, CENIMAT-I3N, Portugal
- Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal
| | - Célia Henriques
- Centro de Investigação de Materiais, Institute for Nanostructures, Nanomodelling and Nanofabrication, CENIMAT-I3N, Portugal
- Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal
| | - João Paulo Borges
- Centro de Investigação de Materiais, Institute for Nanostructures, Nanomodelling and Nanofabrication, CENIMAT-I3N, Portugal
- Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal
| | - Jorge Carvalho Silva
- Centro de Investigação de Materiais, Institute for Nanostructures, Nanomodelling and Nanofabrication, CENIMAT-I3N, Portugal
- Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal
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2
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Vieira T, Silva JC, Kubinova S, Borges JP, Henriques C. Evaluation of Gelatin-Based Poly(Ester Urethane Urea) Electrospun Fibers Using Human Mesenchymal and Neural Stem Cells. Macromol Biosci 2024:e2400014. [PMID: 39072995 DOI: 10.1002/mabi.202400014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 05/10/2024] [Indexed: 07/30/2024]
Abstract
Previously, a new biodegradable poly(ester urethane urea) was synthesized based on polycaprolactone-diol and fish gelatin (PU-Gel). In this work, the potential of this new material for neural tissue engineering is evaluated. Membranes with randomly oriented fibers and with aligned fibers are produced using electrospinning and characterized regarding their mechanical behavior under both dry and wet conditions. Wet samples exhibit a lower Young's modulus than dry ones and aligned membranes are stiffer and more brittle than those randomly oriented. Cyclic tensile tests are conducted and high values for recovery ratio and resilience are obtained. Both membranes exhibited a hydrophobic surface, measured by the water contact angle (WCA). Human mesenchymal stem cells from umbilical cord tissue (UC-MSCs) and human neural stem cells (NSCs) are seeded on both types of membranes, which support their adhesion and proliferation. Cells stained for the cytoskeleton and nucleus in membranes with aligned fibers display an elongated morphology following the alignment direction. As the culture time increased, higher cell viability is obtained on randomfibers for UC-MSCs while no differences are observed for NSCs. The membranes support neuronal differentiation of NSCs, as evidenced by markers for a neuronal filament protein (NF70) and for a microtubule-associated protein (MAP2).
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Affiliation(s)
- Tânia Vieira
- CENIMAT/i3N, NOVA School of Sciences and Technology, Universidade Nova de Lisboa, Caparica, 2829-516, Portugal
- Departamento de Física, NOVA School of Sciences and Technology, Universidade Nova de Lisboa, Caparica, 2829-516, Portugal
| | - Jorge Carvalho Silva
- CENIMAT/i3N, NOVA School of Sciences and Technology, Universidade Nova de Lisboa, Caparica, 2829-516, Portugal
- Departamento de Física, NOVA School of Sciences and Technology, Universidade Nova de Lisboa, Caparica, 2829-516, Portugal
| | - Sarka Kubinova
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague 4, Czech Republic
| | - João P Borges
- CENIMAT/i3N, NOVA School of Sciences and Technology, Universidade Nova de Lisboa, Caparica, 2829-516, Portugal
- Departamento de Ciência dos Materiais, NOVA School of Sciences and Technology, Universidade Nova de Lisboa, Caparica, 2829-516, Portugal
| | - Célia Henriques
- CENIMAT/i3N, NOVA School of Sciences and Technology, Universidade Nova de Lisboa, Caparica, 2829-516, Portugal
- Departamento de Física, NOVA School of Sciences and Technology, Universidade Nova de Lisboa, Caparica, 2829-516, Portugal
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3
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Zhang Z, Ma M. Strategies to enhance the ability of nerve guidance conduits to promote directional nerve growth. Biomed Eng Online 2024; 23:40. [PMID: 38582838 PMCID: PMC10998375 DOI: 10.1186/s12938-024-01233-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 04/02/2024] [Indexed: 04/08/2024] Open
Abstract
Severely damaged peripheral nerves will regenerate incompletely due to lack of directionality in their regeneration, leading to loss of nerve function. To address this problem, various nerve guidance conduits (NGCs) have been developed to provide guidance for nerve repair. However, their clinical application is still limited, mainly because its effect in promoting nerve repair is not as good as autologous nerve transplantation. Therefore, it is necessary to enhance the ability of NGCs to promote directional nerve growth. Strategies include preparing various directional structures on NGCs to provide contact guidance, and loading various substances on them to provide electrical stimulation or neurotrophic factor concentration gradient to provide directional physical or biological signals.
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Affiliation(s)
- Ziyue Zhang
- South China University of Technology School of Medicine, Guangzhou, China.
| | - Muyuan Ma
- South China University of Technology School of Medicine, Guangzhou, China
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4
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Ayran M, Karabulut H, Deniz KI, Akcanli GC, Ulag S, Croitoru AM, Tihăuan BM, Sahin A, Ficai D, Gunduz O, Ficai A. Electrically Triggered Quercetin Release from Polycaprolactone/Bismuth Ferrite Microfibrous Scaffold for Skeletal Muscle Tissue. Pharmaceutics 2023; 15:pharmaceutics15030920. [PMID: 36986781 PMCID: PMC10056538 DOI: 10.3390/pharmaceutics15030920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/27/2023] [Accepted: 03/03/2023] [Indexed: 03/16/2023] Open
Abstract
Skeletal muscle tissue engineering presents a promising avenue to address the limitations pertaining to the regenerative potential of stem cells in case of injury or damage. The objective of this research was to evaluate the effects of utilizing novel microfibrous scaffolds, containing the compound quercetin (Q), on skeletal muscle regeneration. Morphological test results showed us that the combination of bismuth ferrite (BFO), polycaprolactone (PCL), and Q were bonded and well-ordered with each other, and a uniform microfibrous structure was obtained. Antimicrobial susceptibility testing of PCL/BFO/Q was conducted, and microbial reduction was found to be over 90% in the highest concentration of Q-loaded microfibrous scaffolds with the most inhibitory effect on S. aureus strains. Further, biocompatibility was investigated by performing MTT testing, fluorescence testing, and SEM imaging on mesenchymal stem cells (MSCs) to determine whether they could act as suitable microfibrous scaffolds for skeletal muscle tissue engineering. Incremental changes in the concentration of Q led to increased strength and strain, allowing muscles to withstand stretching during the healing process. In addition, electrically conductive microfibrous scaffolds enhanced the drug release capability by revealing that Q can be released significantly more quickly by applying the appropriate electric field, compared with conventional drug-release techniques. These findings suggest a possible use for PCL/BFO/Q microfibrous scaffolds in skeletal muscle regeneration by demonstrating that the combined action of both guidance biomaterials was more successful than Q itself acting alone.
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Affiliation(s)
- Musa Ayran
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, Istanbul 34722, Turkey
- Institute of Pure and Applied Sciences, Department of Metallurgical and Materials Engineering, Faculty of Technology, Marmara University, Istanbul 34722, Turkey
| | - Hatice Karabulut
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, Istanbul 34722, Turkey
- Institute of Pure and Applied Sciences, Department of Metallurgical and Materials Engineering, Faculty of Technology, Marmara University, Istanbul 34722, Turkey
| | - Kudret Irem Deniz
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, Istanbul 34722, Turkey
- Institute of Pure and Applied Sciences, Department of Metallurgical and Materials Engineering, Faculty of Technology, Marmara University, Istanbul 34722, Turkey
| | - Gamze Ceren Akcanli
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, Istanbul 34722, Turkey
| | - Songul Ulag
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, Istanbul 34722, Turkey
- Institute of Pure and Applied Sciences, Department of Metallurgical and Materials Engineering, Faculty of Technology, Marmara University, Istanbul 34722, Turkey
| | - Alexa-Maria Croitoru
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 060042 Bucharest, Romania
- National Centre for Micro- and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
- National Centre for Food Safety, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | - Bianca-Maria Tihăuan
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 060042 Bucharest, Romania
- Research Institute of the University of Bucharest—ICUB, 050567 Bucharest, Romania
- Research & Development for Advanced Biotechnologies and Medical Devices, SC Sanimed International Impex SRL, 087040 Calugareni, Romania
| | - Ali Sahin
- Department of Biochemistry, Faculty of Medicine, Marmara University, Istanbul 34722, Turkey
| | - Denisa Ficai
- National Centre for Micro- and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
- National Centre for Food Safety, University Politehnica of Bucharest, 060042 Bucharest, Romania
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | - Oguzhan Gunduz
- Center for Nanotechnology & Biomaterials Application and Research (NBUAM), Marmara University, Istanbul 34722, Turkey
- Institute of Pure and Applied Sciences, Department of Metallurgical and Materials Engineering, Faculty of Technology, Marmara University, Istanbul 34722, Turkey
- Correspondence:
| | - Anton Ficai
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 060042 Bucharest, Romania
- National Centre for Micro- and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
- National Centre for Food Safety, University Politehnica of Bucharest, 060042 Bucharest, Romania
- Academy of Romanian Scientists, Ilfov St. 3, 050044 Bucharest, Romania
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5
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Dromel PC, Singh D, Alexander-Katz A, Kurisawa M, Spector M, Young M. Mechano-Chemical Effect of Gelatin- and HA-Based Hydrogels on Human Retinal Progenitor Cells. Gels 2023; 9:gels9010058. [PMID: 36661824 PMCID: PMC9858647 DOI: 10.3390/gels9010058] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/04/2023] [Accepted: 01/06/2023] [Indexed: 01/15/2023] Open
Abstract
Engineering matrices for cell therapy requires design criteria that include the ability of these materials to support, protect and enhance cellular behavior in vivo. The chemical and mechanical formulation of the biomaterials can influence not only target cell phenotype but also cellular differentiation. In this study, we have demonstrated the effect of a gelatin (Gtn)-hyaluronic acid (HA) hydrogel on human retinal progenitor cells (hRPCs) and show that by altering the mechanical properties of the materials, cellular behavior is altered as well. We have created an interpenetrating network polymer capable of encapsulating hRPCs. By manipulating the stiffness of the hydrogel, the differentiation potential of the hRPCs was controlled. Interpenetrating network 75 (IPN 75; 75% HA) allowed higher expression of rod photoreceptor markers, whereas cone photoreceptor marker expression was found to be higher in IPN 50. In vivo testing of these living matrices performed in Long-Evans rats showed higher levels of rod photoreceptor marker expression when IPN 75 was injected versus IPN 50. These biomaterials mimic biological cues that are required to simulate the dynamic complexity of natural retinal ECM. These hydrogels can be used as a vehicle for cell delivery in vivo as well as for expansion and differentiation in an in vitro 3D system in a highly reproducible manner.
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Affiliation(s)
- Pierre C. Dromel
- Schepens Eye Research Institute of Massachusetts Ear and Eye, Mass General Brigham, Harvard Medical School, 20 Staniford Street, Boston, MA 02144, USA
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
| | - Deepti Singh
- Schepens Eye Research Institute of Massachusetts Ear and Eye, Mass General Brigham, Harvard Medical School, 20 Staniford Street, Boston, MA 02144, USA
| | - Alfredo Alexander-Katz
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
| | - Motoichi Kurisawa
- Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi 923-1292, Ishikawa, Japan
| | - Myron Spector
- VA Boston Healthcare System, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02155, USA
| | - Michael Young
- Schepens Eye Research Institute of Massachusetts Ear and Eye, Mass General Brigham, Harvard Medical School, 20 Staniford Street, Boston, MA 02144, USA
- Correspondence:
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6
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Evolution of Electrospinning in Liver Tissue Engineering. Biomimetics (Basel) 2022; 7:biomimetics7040149. [PMID: 36278706 PMCID: PMC9589992 DOI: 10.3390/biomimetics7040149] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 09/09/2022] [Accepted: 09/15/2022] [Indexed: 11/17/2022] Open
Abstract
The major goal of liver tissue engineering is to reproduce the phenotype and functions of liver cells, especially primary hepatocytes ex vivo. Several strategies have been explored in the recent past for culturing the liver cells in the most apt environment using biological scaffolds supporting hepatocyte growth and differentiation. Nanofibrous scaffolds have been widely used in the field of tissue engineering for their increased surface-to-volume ratio and increased porosity, and their close resemblance with the native tissue extracellular matrix (ECM) environment. Electrospinning is one of the most preferred techniques to produce nanofiber scaffolds. In the current review, we have discussed the various technical aspects of electrospinning that have been employed for scaffold development for different types of liver cells. We have highlighted the use of synthetic and natural electrospun polymers along with liver ECM in the fabrication of these scaffolds. We have also described novel strategies that include modifications, such as galactosylation, matrix protein incorporation, etc., in the electrospun scaffolds that have evolved to support the long-term growth and viability of the primary hepatocytes.
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7
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Mariano A, Bovio CL, Criscuolo V, Santoro F. Bioinspired micro- and nano-structured neural interfaces. NANOTECHNOLOGY 2022; 33:492501. [PMID: 35947922 DOI: 10.1088/1361-6528/ac8881] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
The development of a functional nervous system requires neurons to interact with and promptly respond to a wealth of biochemical, mechanical and topographical cues found in the neural extracellular matrix (ECM). Among these, ECM topographical cues have been found to strongly influence neuronal function and behavior. Here, we discuss how the blueprint of the architectural organization of the brain ECM has been tremendously useful as a source of inspiration to design biomimetic substrates to enhance neural interfaces and dictate neuronal behavior at the cell-material interface. In particular, we focus on different strategies to recapitulate cell-ECM and cell-cell interactions. In order to mimic cell-ECM interactions, we introduce roughness as a first approach to provide informative topographical biomimetic cues to neurons. We then examine 3D scaffolds and hydrogels, as softer 3D platforms for neural interfaces. Moreover, we will discuss how anisotropic features such as grooves and fibers, recapitulating both ECM fibrils and axonal tracts, may provide recognizable paths and tracks that neuron can follow as they develop and establish functional connections. Finally, we show how isotropic topographical cues, recapitulating shapes, and geometries of filopodia- and mushroom-like dendritic spines, have been instrumental to better reproduce neuron-neuron interactions for applications in bioelectronics and neural repair strategies. The high complexity of the brain architecture makes the quest for the fabrication of create more biologically relevant biomimetic architectures in continuous and fast development. Here, we discuss how recent advancements in two-photon polymerization and remotely reconfigurable dynamic interfaces are paving the way towards to a new class of smart biointerfaces forin vitroapplications spanning from neural tissue engineering as well as neural repair strategies.
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Affiliation(s)
- Anna Mariano
- Tissue Electronics, Istituto Italiano di Tecnologia, I-80125 Naples, Italy
| | - Claudia Latte Bovio
- Tissue Electronics, Istituto Italiano di Tecnologia, I-80125 Naples, Italy
- Dipartimento di Chimica, Materiali e Produzione Industriale, Università di Napoli Federico II, I-80125, Naples, Italy
| | - Valeria Criscuolo
- Faculty of Electrical Engineering and IT, RWTH Aachen, D-52074, Germany
| | - Francesca Santoro
- Tissue Electronics, Istituto Italiano di Tecnologia, I-80125 Naples, Italy
- Faculty of Electrical Engineering and IT, RWTH Aachen, D-52074, Germany
- Institute for Biological Information Processing-Bioelectronics, Forschungszentrum Juelich, D-52428, Germany
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8
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Zhou J, Nie Y, Jin C, Zhang JXJ. Engineering Biomimetic Extracellular Matrix with Silica Nanofibers: From 1D Material to 3D Network. ACS Biomater Sci Eng 2022; 8:2258-2280. [PMID: 35377596 DOI: 10.1021/acsbiomaterials.1c01525] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Biomaterials at nanoscale is a fast-expanding research field with which extensive studies have been conducted on understanding the interactions between cells and their surrounding microenvironments as well as intracellular communications. Among many kinds of nanoscale biomaterials, mesoporous fibrous structures are especially attractive as a promising approach to mimic the natural extracellular matrix (ECM) for cell and tissue research. Silica is a well-studied biocompatible, natural inorganic material that can be synthesized as morpho-genetically active scaffolds by various methods. This review compares silica nanofibers (SNFs) to other ECM materials such as hydrogel, polymers, and decellularized natural ECM, summarizes fabrication techniques for SNFs, and discusses different strategies of constructing ECM using SNFs. In addition, the latest progress on SNFs synthesis and biomimetic ECM substrates fabrication is summarized and highlighted. Lastly, we look at the wide use of SNF-based ECM scaffolds in biological applications, including stem cell regulation, tissue engineering, drug release, and environmental applications.
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Affiliation(s)
- Junhu Zhou
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Yuan Nie
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Congran Jin
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - John X J Zhang
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, United States
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9
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Zhang N, Lin J, Chin JS, Wiraja C, Xu C, McGrouther DA, Chew SY. Delivery of Wnt inhibitor WIF1 via engineered polymeric microspheres promotes nerve regeneration after sciatic nerve crush. J Tissue Eng 2022; 13:20417314221087417. [PMID: 35422984 PMCID: PMC9003641 DOI: 10.1177/20417314221087417] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 02/27/2022] [Indexed: 01/09/2023] Open
Abstract
Injuries within the peripheral nervous system (PNS) lead to sensory and motor deficits, as well as neuropathic pain, which strongly impair the life quality of patients. Although most current PNS injury treatment approaches focus on using growth factors/small molecules to stimulate the regrowth of the injured nerves, these methods neglect another important factor that strongly hinders axon regeneration-the presence of axonal inhibitory molecules. Therefore, this work sought to explore the potential of pathway inhibition in promoting sciatic nerve regeneration. Additionally, the therapeutic window for using pathway inhibitors was uncovered so as to achieve the desired regeneration outcomes. Specifically, we explored the role of Wnt signaling inhibition on PNS regeneration by delivering Wnt inhibitors, sFRP2 and WIF1, after sciatic nerve transection and sciatic nerve crush injuries. Our results demonstrate that WIF1 promoted nerve regeneration (p < 0.05) after sciatic nerve crush injury. More importantly, we revealed the therapeutic window for the treatment of Wnt inhibitors, which is 1 week post sciatic nerve crush when the non-canonical receptor tyrosine kinase (Ryk) is significantly upregulated.
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Affiliation(s)
- Na Zhang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore
| | - Junquan Lin
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore
| | - Jiah Shin Chin
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore
- NTU Institute for Health Technologies, Interdisciplinary Graduate School, Nanyang Technological University, Singapore, Singapore
| | - Christian Wiraja
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore
| | - Chenjie Xu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, China
| | - Duncan Angus McGrouther
- Department of Hand and Reconstructive Microsurgery, Singapore General Hospital, Singapore, Singapore
| | - Sing Yian Chew
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
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10
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Zhang X, Meng Y, Gong B, Wang T, Lu Y, Zhang L, Xue J. Electrospun Nanofibers for Manipulating the Soft Tissue Regeneration. J Mater Chem B 2022; 10:7281-7308. [DOI: 10.1039/d2tb00609j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Soft tissue damage is a common clinical problem that affects the lives of a large number of patients all over the world. It is of great importance to develop functional...
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11
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Liu C, Wang Z, Yao X, Wang M, Huang Z, Li X. Sustained Biochemical Signaling and Contact Guidance by Electrospun Bicomponents as Promising Scaffolds for Nerve Tissue Regeneration. ACS OMEGA 2021; 6:33010-33017. [PMID: 34901652 PMCID: PMC8655927 DOI: 10.1021/acsomega.1c05117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 11/15/2021] [Indexed: 06/14/2023]
Abstract
Electrospun fibers are excellent delivery vehicles enabling a sustained release of growth factors to elicit favorable cell responses and are increasingly used in tissue engineering. Scaffolds with specific physical/topographical features can also guide cell migration and maturation. Therefore, growth factor-loaded electrospun scaffolds with a designed topography are promising for tissue regeneration. In this investigation, aligned-fiber scaffolds composed of poly(lactic-co-glycolic acid) nanofibers incorporating a glial cell line-derived growth factor and poly (d,l-lactic acid) nanofibers incorporating a nerve growth factor were produced by electrospinning. The scaffolds provided an aligned fibrous topography and a dual release of growth factors. The rat pheochromocytoma cell (PC12 cell) response to produced non-woven and aligned-fiber scaffolds with/without growth factors was studied. The dual release of growth factors and topographical cues provided by aligned-fiber bicomponent scaffolds induced significant neurite extension, neuronal differentiation, and neurite alignment in a synergistic manner. The scaffolds with predesigned biochemical/topographical cues demonstrated in this study might be promising for nerve tissue repair.
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Affiliation(s)
- Chaoyu Liu
- Department
of Research and Development, Shenzhen Shiningbiotek
Company Limited, Shenzhen 518055, China
| | - Zhiping Wang
- Department
of Research and Development, Shenzhen Anlv
Medical Technology Company Limited, Shenzhen 518055, China
| | - Xumei Yao
- Department
of Research and Development, Shenzhen Shiningbiotek
Company Limited, Shenzhen 518055, China
| | - Min Wang
- Department
of Mechanical Engineering, The University
of Hong Kong, Pokfulam
Road, Hong Kong 999077, China
| | - Zhigang Huang
- Department
of General Practice, Peking University Shenzhen
Hospital, Shenzhen 518036, China
| | - Xiaohua Li
- Department
of Research and Development, Shenzhen Shiningbiotek
Company Limited, Shenzhen 518055, China
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12
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Gupta A, Singh S. Potential Role of Growth Factors Controlled Release in Achieving Enhanced Neuronal Trans-differentiation from Mesenchymal Stem Cells for Neural Tissue Repair and Regeneration. Mol Neurobiol 2021; 59:983-1001. [PMID: 34816381 DOI: 10.1007/s12035-021-02646-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 11/11/2021] [Indexed: 02/07/2023]
Abstract
With an increase in the incidence of neurodegenerative diseases, a need to replace incapable conventional methods has arisen. To overcome this burden, stem cells therapy has emerged as an efficient treatment option. Endeavours to accomplish this have paved the path to neural regeneration through efficient neuronal transdifferentiation. Despite their potential, the use of stem cells still entails several limitations, such as low differentiation efficiency and difficulties in guiding differentiation. The process of neural differentiation through the stem cells is achieved through the use of chemical inducers or growth factors and their direct introduction reduces their bioavailability in the system. To address these limitations, neural regeneration ventures require growth factors to be effectively implemented on stem cells in order to produce functional neuronal precursor cells. An efficient technique to achieve it is through the delivery of growth factors via microcarriers for their sustained release. It ensures the presence of commensurable concentration even at later stages of neuronal transdifferentiation. Nanofibers and nanoparticles, along with liposomes and such, have been used to implement this. The interaction between such carriers and the growth factors is mainly electrostatic. Such interaction enables them to form a stable assembly through immobilisation of the growth factor either onto their surfaces or within the core of their structures. The rate of sustained release depends upon the release kinetics associated with the polymeric structure employed and its interaction with the encapsulated growth factor. The sustained release ensures that the stem cells immerse under the effect of the growth factors for a prolonged period, ultimately aiding in the formation of cells showing ample characteristics of neuron precursors. This review analyses the various carriers that have been employed for the release of growth factors in an orderly fashion and their constituents, along with the advantages and the limitations they pose in delivering the growth factors for facilitating the process of neuronal transdifferentiation.
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Affiliation(s)
- Ayushi Gupta
- Applied Science Department, Indian Institute of Information Technology, Allahabad, UP, India
| | - Sangeeta Singh
- Applied Science Department, Indian Institute of Information Technology, Allahabad, UP, India.
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13
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Fan S, Qi L, Li J, Pan D, Zhang Y, Li R, Zhang C, Wu D, Lau P, Hu Y, Bi G, Ding W, Chu J. Guiding the Patterned Growth of Neuronal Axons and Dendrites Using Anisotropic Micropillar Scaffolds. Adv Healthc Mater 2021; 10:e2100094. [PMID: 34019723 DOI: 10.1002/adhm.202100094] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/27/2021] [Indexed: 12/31/2022]
Abstract
The patterning of axonal and dendritic growth is an important topic in neural tissue engineering and critical for generating directed neuronal networks in vitro. Evidence shows that artificial micro/nanotopography can better mimic the environment for neuronal growth in vivo. However, the potential mechanisms by which neurons interact with true three dimensional (3D) topographical cues and form directional networks are unclear. Herein, 3D micropillar scaffolds are designed to guide the growth of neural stem cells and hippocampal neurons in vitro. Discontinuous and anisotropic micropillars are fabricated by femtosecond direct laser writing to form patterned scaffolds with various spacings and heights, which are found to affect the branching and orientation of axons and dendrites. Interestingly, axons and dendrites tend to grow on an array of 3D micropillar scaffolds of the same height and form functionally connected neuronal networks, as reflected by synchronous neuronal activity visualized by calcium imaging. This method may represent a promising tool for studying neuron behavior and directed neuronal networks in a 3D environment.
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Affiliation(s)
- Shengying Fan
- Center for Biomedical Engineering Department of Electronic Science and Technology University of Science and Technology of China Hefei 230026 China
| | - Lei Qi
- CAS Key Laboratory of Brain Function and Disease School of Life Sciences Division of Life Sciences and Medicine University of Science and Technology of China Hefei 230026 China
- Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China
| | - Jiawen Li
- Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 China
| | - Deng Pan
- Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 China
| | - Yiyuan Zhang
- Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 China
| | - Rui Li
- Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 China
| | - Cong Zhang
- Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 China
| | - Dong Wu
- Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 China
| | - Pakming Lau
- CAS Key Laboratory of Brain Function and Disease School of Life Sciences Division of Life Sciences and Medicine University of Science and Technology of China Hefei 230026 China
- Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China
| | - Yanlei Hu
- Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 China
| | - Guoqiang Bi
- CAS Key Laboratory of Brain Function and Disease School of Life Sciences Division of Life Sciences and Medicine University of Science and Technology of China Hefei 230026 China
- Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China
| | - Weiping Ding
- Center for Biomedical Engineering Department of Electronic Science and Technology University of Science and Technology of China Hefei 230026 China
| | - Jiaru Chu
- Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 China
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14
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Czarnecka K, Wojasiński M, Ciach T, Sajkiewicz P. Solution Blow Spinning of Polycaprolactone-Rheological Determination of Spinnability and the Effect of Processing Conditions on Fiber Diameter and Alignment. MATERIALS (BASEL, SWITZERLAND) 2021; 14:1463. [PMID: 33802725 PMCID: PMC8002481 DOI: 10.3390/ma14061463] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 11/17/2022]
Abstract
The growing popularity of solution blow spinning as a method for the production of fibrous tissue engineering scaffolds and the vast range of polymer-solvent systems available for the method raises the need to study the effect of processing conditions on fiber morphology and develop a method for its qualitative assessment. Rheological approaches to determine polymer solution spinnability and image analysis approaches to describe fiber diameter and alignment have been previously proposed, although in a separate manner and mostly for the widely known, well-researched electrospinning method. In this study, a series of methods is presented to determine the processing conditions for the development of submicron fibrous scaffolds. Rheological methods are completed with extensive image analysis to determine the spinnability window for a polymer-solvent system and qualitatively establish the influence of polymer solution concentration and collector rotational speed on fiber morphology, diameter, and alignment. Process parameter selection for a tissue engineering scaffold target application is discussed, considering the varying structural properties of the native extracellular matrix of the tissue of interest.
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Affiliation(s)
- Katarzyna Czarnecka
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5b, 02-106 Warsaw, Poland;
| | - Michał Wojasiński
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645 Warsaw, Poland; (M.W.); (T.C.)
| | - Tomasz Ciach
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645 Warsaw, Poland; (M.W.); (T.C.)
- Warsaw University of Technology, CEZAMAT, Poleczki 19, 02-822 Warsaw, Poland
| | - Pawel Sajkiewicz
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5b, 02-106 Warsaw, Poland;
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15
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Liu C, Li X, Zhao Q, Xie Y, Yao X, Wang M, Cao F. Nanofibrous bicomponent scaffolds for the dual delivery of NGF and GDNF: controlled release of growth factors and their biological effects. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2021; 32:9. [PMID: 33471206 PMCID: PMC7817556 DOI: 10.1007/s10856-020-06479-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 12/18/2020] [Indexed: 06/01/2023]
Abstract
Electrospun fibrous scaffolds capable of providing dual growth factor delivery in a controlled manner have distinctive advantages for tissue engineering. In this study, we have investigated the formation, structure, and characteristics/properties of fibrous bicomponent scaffolds for the dual delivery of glial cell line-derived neurotrophic factor (GDNF) and nerve growth factor (NGF) for peripheral nerve tissue regeneration. GDNF and NGF were incorporated into core-shell structured poly(lactic-co-glycolic acid) (PLGA) and poly (D,L-lactic acid) (PDLLA) nanofibers, respectively, through emulsion electrospinning. Using dual-source dual-power electrospinning, bicomponent scaffolds composed of GDNF/PLGA fibers and NGF/PDLLA fibers with different fiber component ratios were produced. The structure, properties, and in vitro release behavior of mono- and bicomponent scaffolds were systematically investigated. Concurrent and sustained release of GDNF and NGF from bicomponent scaffolds was achieved and their release profiles could be tuned. In vitro biological investigations were conducted. Rat pheochromocytoma cells were found to attach, spread, and proliferate on all scaffolds. The release of growth factors from scaffolds could induce much improved neurite outgrowth and neural differentiation. GDNF and NGF released from GDNF/PLGA scaffolds and NGF/PDLLA scaffolds, respectively, could induce dose-dependent neural differentiation separately. GDNF and NGF released from bicomponent scaffolds exerted a synergistic effect on promoting neural differentiation.
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Affiliation(s)
- Chaoyu Liu
- Department of Research and Development, Shenzhen Shiningbiotek Co., Ltd, Shenzhen, 518055, P. R. China.
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China.
| | - Xiaohua Li
- Department of Research and Development, Shenzhen Shiningbiotek Co., Ltd, Shenzhen, 518055, P. R. China
- Oncology Center, Hubei University of Medicine, Shiyan, 442000, P. R. China
| | - Qilong Zhao
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, P. R. China
| | - Yuancai Xie
- Department of Thoracic, Peking University Shenzhen Hospital, Shenzhen, 518036, P. R. China
| | - Xumei Yao
- Department of Research and Development, Shenzhen Shiningbiotek Co., Ltd, Shenzhen, 518055, P. R. China
| | - Min Wang
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Fengjun Cao
- Oncology Center, Hubei University of Medicine, Shiyan, 442000, P. R. China.
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16
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Yang CY, Huang WY, Chen LH, Liang NW, Wang HC, Lu J, Wang X, Wang TW. Neural tissue engineering: the influence of scaffold surface topography and extracellular matrix microenvironment. J Mater Chem B 2021; 9:567-584. [DOI: 10.1039/d0tb01605e] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Strategies using surface topography, contact guidance and biomechanical cues in the design of scaffolds as an ECM support for neural tissue engineering.
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Affiliation(s)
- Chun-Yi Yang
- Institute for Regenerative Medicine and Biomimetic Materials
- School of Materials Science and Engineering
- Tsinghua University
- Beijing
- China
| | - Wei-Yuan Huang
- Department of Materials Science and Engineering
- National Tsing Hua University
- Hsinchu
- Taiwan
| | - Liang-Hsin Chen
- Department of Materials Science and Engineering
- National Tsing Hua University
- Hsinchu
- Taiwan
| | - Nai-Wen Liang
- Department of Materials Science and Engineering
- National Tsing Hua University
- Hsinchu
- Taiwan
| | - Huan-Chih Wang
- Division of Neurosurgery
- Department of Surgery
- National Taiwan University Hospital
- Taipei
- Taiwan
| | - Jiaju Lu
- Institute for Regenerative Medicine and Biomimetic Materials
- School of Materials Science and Engineering
- Tsinghua University
- Beijing
- China
| | - Xiumei Wang
- Institute for Regenerative Medicine and Biomimetic Materials
- School of Materials Science and Engineering
- Tsinghua University
- Beijing
- China
| | - Tzu-Wei Wang
- Department of Materials Science and Engineering
- National Tsing Hua University
- Hsinchu
- Taiwan
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17
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West-Livingston LN, Park J, Lee SJ, Atala A, Yoo JJ. The Role of the Microenvironment in Controlling the Fate of Bioprinted Stem Cells. Chem Rev 2020; 120:11056-11092. [PMID: 32558555 PMCID: PMC7676498 DOI: 10.1021/acs.chemrev.0c00126] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The field of tissue engineering and regenerative medicine has made numerous advances in recent years in the arena of fabricating multifunctional, three-dimensional (3D) tissue constructs. This can be attributed to novel approaches in the bioprinting of stem cells. There are expansive options in bioprinting technology that have become more refined and specialized over the years, and stem cells address many limitations in cell source, expansion, and development of bioengineered tissue constructs. While bioprinted stem cells present an opportunity to replicate physiological microenvironments with precision, the future of this practice relies heavily on the optimization of the cellular microenvironment. To fabricate tissue constructs that are useful in replicating physiological conditions in laboratory settings, or in preparation for transplantation to a living host, the microenvironment must mimic conditions that allow bioprinted stem cells to proliferate, differentiate, and migrate. The advances of bioprinting stem cells and directing cell fate have the potential to provide feasible and translatable approach to creating complex tissues and organs. This review will examine the methods through which bioprinted stem cells are differentiated into desired cell lineages through biochemical, biological, and biomechanical techniques.
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Affiliation(s)
- Lauren N. West-Livingston
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157, United States
| | - Jihoon Park
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157, United States
| | - Sang Jin Lee
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157, United States
| | - Anthony Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157, United States
| | - James J. Yoo
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157, United States
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18
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Xue J, Pisignano D, Xia Y. Maneuvering the Migration and Differentiation of Stem Cells with Electrospun Nanofibers. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2000735. [PMID: 32775158 PMCID: PMC7404157 DOI: 10.1002/advs.202000735] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/30/2020] [Indexed: 05/21/2023]
Abstract
Electrospun nanofibers have been extensively explored as a class of scaffolding materials for tissue regeneration, because of their unique capability to mimic some features and functions of the extracellular matrix, including the fibrous morphology and mechanical properties, and to a certain extent the chemical/biological cues. This work reviews recent progress in applying electrospun nanofibers to direct the migration of stem cells and control their differentiation into specific phenotypes. First, the physicochemical properties that make electrospun nanofibers well-suited as a supporting material to expand stem cells by controlling their migration and differentiation are introduced. Then various systems are analyzed in conjunction with mesenchymal, neuronal, and embryonic stem cells, as well as induced pluripotent stem cells. Finally, some perspectives on the challenges and future opportunities in combining electrospun nanofibers with stem cells are offered to address clinical issues.
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Affiliation(s)
- Jiajia Xue
- The Wallace H. Coulter Department of Biomedical EngineeringGeorgia Institute of Technology and Emory UniversityAtlantaGA30332USA
| | - Dario Pisignano
- Dipartimento di FisicaUniversità di PisaLargo B. Pontecorvo 3PisaI‐56127Italy
- NESTIstituto Nanoscienze‐CNRPiazza S. Silvestro 12PisaI‐56127Italy
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical EngineeringGeorgia Institute of Technology and Emory UniversityAtlantaGA30332USA
- School of Chemistry and BiochemistrySchool of Chemical and Biomolecular EngineeringGeorgia Institute of TechnologyAtlantaGA30332USA
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19
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Ziloochi Kashani M, Bagher Z, Asgari HR, Najafi M, Koruji M, Mehraein F. Differentiation of neonate mouse spermatogonial stem cells on three-dimensional agar/polyvinyl alcohol nanofiber scaffold. Syst Biol Reprod Med 2020; 66:202-215. [PMID: 32138551 DOI: 10.1080/19396368.2020.1725927] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Electrospun nanofiber matrices sufficiently mimic the structural morphology of natural extracellular matrix. In this study, we aimed to examine the effects of agar/polyvinyl alcohol nanofiber (PVA) scaffold on the proliferation efficiency and differentiation potential of neonate mouse spermatogonial stem cells (SCCs). Testicular cells were isolated from testes of 40 mouse pups and were seeded in: 1) 2D cell culture plates in the absence (2D/-GF) or presence (2D/+GF) of growth factors and 2) onto agar/PVA scaffold in the absence (3D/-GF) or presence (3D/+GF) of growth factors. The cells were subsequently cultured for 4 weeks. First 2 weeks were dedicated to proliferative phase, whereas the next 2 weeks emphasized the differentiation phase. The identity of the SCCs was investigated at different time-points by flow cytometry and quantitative reverse transcription PCR (qRT-PCR) analyses against the germ cell markers, including PLZF, Id-4, Gfrα-1, Tekt-1, and Sycp-3. After 2 weeks of culture, the 3D/+GF group showed the highest percentage of PLZF-positive cells among culture systems (P < 0.05). The expression levels of pre-meiotic markers (Id-4 and Gfrα-1) decreased significantly in all groups, particularly in 3D/+GF group after 28 days of culture. Additionally, the cells in the 3D/+GF group displayed the highest expression of meiotic (Sycp-3) and post-meiotic markers (Tekt-1) 14 days after differentiation induction. Seemingly, the combination of the agar/PVA scaffold and growth factor-supplemented medium synergistically increased the differentiation rate of mouse SSCs into meiotic and post-meiotic cells. Thus, agar/PVA nanofiber scaffolds may have the potential for applications in the restoration of infertility, especially in azoospermic males. ABBREVIATIONS 2D: two dimentional; 3D: three dimentional; bFGF: basic fibroblast growth factor; BMP-4: bone morphogenetic protein 4; DMEM: Dulbecco's modified Eagle's medium; ECM: extracellular matrix; FCS: fetal calf serum; FTIR: Fourier-transform infrared spectroscopy; GDNF: glial cell line-derived neurotrophic factor; GF: growth factors; Gfrα-1, GDNF family co-receptor α1; Id-4, Inhibitor of DNA Binding 4; MTT: methylthiazoltetrazolium; PLZF: promyelocytic leukemia zinc finger; PVA: polyvinyl alcohol; qRT-PCR: quantitative reverse transcription PCR; RA: retinoic acid; SACS: soft agar culture system; SD: standard deviation; SEM: scanning electron microscope; SSCs: spermatogonial stem cells; Sycp-3, Synaptonemal complex protein 3; Tekt-1, Tektin 1.
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Affiliation(s)
- Marzieh Ziloochi Kashani
- Cellular and Molecular Research Center, Iran University of Medical Sciences , Tehran, Iran.,Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences , Tehran, Iran
| | - Zohreh Bagher
- ENT and Head & Neck Research Center and Department, the Five Senses Institute, Hazrat Rasoul Akram Hospital, Iran University of Medical Sciences , Tehran, Iran
| | - Hamid Reza Asgari
- Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences , Tehran, Iran
| | - Mohammad Najafi
- Department of Biochemistry, Faculty of Medicine, Iran University of Medical Sciences , Tehran, Iran
| | - Morteza Koruji
- Cellular and Molecular Research Center, Iran University of Medical Sciences , Tehran, Iran.,Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences , Tehran, Iran
| | - Fereshteh Mehraein
- Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences , Tehran, Iran.,Minimally Invasive Surgery Research Center, Iran University of Medical Sciences , Tehran, Iran
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20
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Jain D, Mattiassi S, Goh EL, Yim EKF. Extracellular matrix and biomimetic engineering microenvironment for neuronal differentiation. Neural Regen Res 2020; 15:573-585. [PMID: 31638079 PMCID: PMC6975142 DOI: 10.4103/1673-5374.266907] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Extracellular matrix (ECM) influences cell differentiation through its structural and biochemical properties. In nervous system, neuronal behavior is influenced by these ECMs structures which are present in a meshwork, fibrous, or tubular forms encompassing specific molecular compositions. In addition to contact guidance, ECM composition and structures also exert its effect on neuronal differentiation. This short report reviewed the native ECM structure and composition in central nervous system and peripheral nervous system, and their impact on neural regeneration and neuronal differentiation. Using topographies, stem cells have been differentiated to neurons. Further, focussing on engineered biomimicking topographies, we highlighted the role of anisotropic topographies in stem cell differentiation to neurons and its recent temporal application for efficient neuronal differentiation.
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Affiliation(s)
- Deepak Jain
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Sabrina Mattiassi
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Eyleen L Goh
- Neuroscience Academic Clinical Programme, Duke-NUS Medical School, Singapore
| | - Evelyn K F Yim
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada
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21
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Jedari B, Rahmani A, Naderi M, Nadri S. MicroRNA‐7 promotes neural differentiation of trabecular meshwork mesenchymal stem cell on nanofibrous scaffold. J Cell Biochem 2019; 121:2818-2827. [DOI: 10.1002/jcb.29513] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 10/08/2019] [Indexed: 01/22/2023]
Affiliation(s)
- Behrouz Jedari
- Department of Medical BiotechnologyZanjan University of Medical SciencesZanjan Iran
| | - Ali Rahmani
- Department of Medical NanotechnologyZanjan University of Medical SciencesZanjan Iran
| | - Mahmood Naderi
- Cell‐Based Therapies Research Center, Digestive Disease Research InstituteTehran University of Medical SciencesTehran Iran
| | - Samad Nadri
- Department of Medical NanotechnologyZanjan University of Medical SciencesZanjan Iran
- Zanjan Metabolic Diseases Research CenterZanjan University of Medical SciencesZanjan Iran
- Zanjan Pharmaceutical Nanotechnology Research CenterZanjan University of Medical SciencesZanjan Iran
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22
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Houlton J, Abumaria N, Hinkley SFR, Clarkson AN. Therapeutic Potential of Neurotrophins for Repair After Brain Injury: A Helping Hand From Biomaterials. Front Neurosci 2019; 13:790. [PMID: 31427916 PMCID: PMC6688532 DOI: 10.3389/fnins.2019.00790] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 07/15/2019] [Indexed: 12/17/2022] Open
Abstract
Stroke remains the leading cause of long-term disability with limited options available to aid in recovery. Significant effort has been made to try and minimize neuronal damage following stroke with use of neuroprotective agents, however, these treatments have yet to show clinical efficacy. Regenerative interventions have since become of huge interest as they provide the potential to restore damaged neural tissue without being limited by a narrow therapeutic window. Neurotrophins, such as brain-derived neurotrophic factor (BDNF), and their high affinity receptors are actively produced throughout the brain and are involved in regulating neuronal activity and normal day-to-day function. Furthermore, neurotrophins are known to play a significant role in both protection and recovery of function following neurodegenerative diseases such as stroke and traumatic brain injury (TBI). Unfortunately, exogenous administration of these neurotrophins is limited by a lack of blood-brain-barrier (BBB) permeability, poor half-life, and rapid degradation. Therefore, we have focused this review on approaches that provide a direct and sustained neurotrophic support using pharmacological therapies and mimetics, physical activity, and potential drug delivery systems, including discussion around advantages and limitations for use of each of these systems. Finally, we discuss future directions of biomaterial drug-delivery systems, including the incorporation of heparan sulfate (HS) in conjunction with neurotrophin-based interventions.
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Affiliation(s)
- Josh Houlton
- Brain Health Research Centre, Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Nashat Abumaria
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute of Brain Science, Fudan University, Shanghai, China
- Department of Laboratory Animal Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Simon F. R. Hinkley
- The Ferrier Research Institute, Victoria University of Wellington, Petone, New Zealand
| | - Andrew N. Clarkson
- Brain Health Research Centre, Department of Anatomy, University of Otago, Dunedin, New Zealand
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23
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de Groot SC, Sliedregt K, van Benthem PPG, Rivolta MN, Huisman MA. Building an Artificial Stem Cell Niche: Prerequisites for Future 3D-Formation of Inner Ear Structures-Toward 3D Inner Ear Biotechnology. Anat Rec (Hoboken) 2019; 303:408-426. [PMID: 30635991 PMCID: PMC7065153 DOI: 10.1002/ar.24067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 06/03/2018] [Accepted: 08/23/2018] [Indexed: 01/19/2023]
Abstract
In recent years, there has been an increased interest in stem cells for the purpose of regenerative medicine to deliver a wide range of therapies to treat many diseases. However, two‐dimensional cultures of stem cells are of limited use when studying the mechanism of pathogenesis of diseases and the feasibility of a treatment. Therefore, research is focusing on the strengths of stem cells in the three‐dimensional (3D) structures mimicking organs, that is, organoids, or organ‐on‐chip, for modeling human biology and disease. As 3D technology advances, it is necessary to know which signals stem cells need to multiply and differentiate into complex structures. This holds especially true for the complex 3D structure of the inner ear. Recent work suggests that although other factors play a role, the extracellular matrix (ECM), including its topography, is crucial to mimic a stem cell niche in vitro and to drive stem cells toward the formation of the tissue of interest. Technological developments have led to the investigation of biomaterials that closely resemble the native ECM. In the fast forward moving research of organoids and organs‐on‐chip, the inner ear has hardly received attention. This review aims to provide an overview, by describing the general context in which cells, matrix and morphogens cooperate in order to build a tissue, to facilitate research in 3D inner ear technology. Anat Rec, 303:408–426, 2020. © 2019 The Authors. The Anatomical Record published by Wiley Periodicals, Inc. on behalf of American Association of Anatomists.
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Affiliation(s)
| | - Karen Sliedregt
- Wageningen University and Research, Wageningen, the Netherlands
| | - Peter Paul G van Benthem
- Department of Otorhinolaryngology and Head & Neck Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | - Marcelo N Rivolta
- Centre for Stem Cell Biology, Department of Biomedical Science, University of Sheffield, Sheffield, UK
| | - Margriet A Huisman
- Hair Science Institute, Maastricht, Maastricht, the Netherlands.,Department of Otorhinolaryngology and Head & Neck Surgery, Leiden University Medical Center, Leiden, the Netherlands
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Zhang N, Chin JS, Chew SY. Localised non-viral delivery of nucleic acids for nerve regeneration in injured nervous systems. Exp Neurol 2018; 319:112820. [PMID: 30195695 DOI: 10.1016/j.expneurol.2018.09.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 08/31/2018] [Accepted: 09/05/2018] [Indexed: 02/07/2023]
Abstract
Axons damaged by traumatic injuries are often unable to spontaneously regenerate in the adult central nervous system (CNS). Although the peripheral nervous system (PNS) has some regenerative capacity, its ability to regrow remains limited across large lesion gaps due to scar tissue formation. Nucleic acid therapy holds the potential of improving regeneration by enhancing the intrinsic growth ability of neurons and overcoming the inhibitory environment that prevents neurite outgrowth. Nucleic acids modulate gene expression by over-expression of neuronal growth factor or silencing growth-inhibitory molecules. Although in vitro outcomes appear promising, the lack of efficient non-viral nucleic acid delivery methods to the nervous system has limited the application of nucleic acid therapeutics to patients. Here, we review the recent development of efficient non-viral nucleic acid delivery platforms, as applied to the nervous system, including the transfection vectors and carriers used, as well as matrices and scaffolds that are currently used. Additionally, we will discuss possible improvements for localised nucleic acid delivery.
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Affiliation(s)
- Na Zhang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 637459, Singapore
| | - Jiah Shin Chin
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 637459, Singapore; NTU Institute of Health Technologies, Interdisciplinary Graduate School, Nanyang Technological University, 639798, Singapore
| | - Sing Yian Chew
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 637459, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University, 308232, Singapore.
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25
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Pinese C, Lin J, Milbreta U, Li M, Wang Y, Leong KW, Chew SY. Sustained delivery of siRNA/mesoporous silica nanoparticle complexes from nanofiber scaffolds for long-term gene silencing. Acta Biomater 2018; 76:164-177. [PMID: 29890267 DOI: 10.1016/j.actbio.2018.05.054] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 05/13/2018] [Accepted: 05/31/2018] [Indexed: 01/28/2023]
Abstract
A low toxicity and efficient delivery system is needed to deliver small interfering RNAs (siRNA) in vitro and in vivo. The use of mesoporous silica nanoparticles (MSN) is becoming increasingly common due to its biocompatibility, tunable pore size and customizable properties. However, bolus delivery of siRNA/MSN complexes remains suboptimal, especially when a sustained and long-term administration is required. Here, we utilized electrospun scaffolds for sustained delivery of siRNA/MSN-PEI through surface adsorption and nanofiber encapsulation. As a proof-of-concept, we targeted collagen type I expression to modulate fibrous capsule formation. Surface adsorption of siRNA/MSN-PEI provided sustained availability of siRNA for at least 30 days in vitro. As compared to conventional bolus delivery, such scaffold-mediated transfection provided more effective gene silencing (p < 0.05). On the contrary, a longer sustained release was attained (at least 5 months) when siRNA/MSN-PEI complexes were encapsulated within the electrospun fibers. In vivo subcutaneous implantation and biodistribution analysis of these scaffolds revealed that siRNA remained localized up to ∼290 μm from the implants. Finally, a fibrous capsule reduction of ∼45.8% was observed after 4 weeks in vivo as compared to negative scrambled siRNA treatment. Taken together, these results demonstrate the efficacy of scaffold-mediated sustained delivery of siRNA/MSN-PEI for long-term non-viral gene silencing applications. STATEMENT OF SIGNIFICANCE The bolus delivery of siRNA/mesoporous silica nanoparticles (MSN) complexes shows high efficiency to silence protein agonists of tumoral processes as cancer treatments. However, in tissue engineering area, scaffold mediated delivery is desired to achieve a local and sustained release of therapeutics. We showed the feasibility and the efficacy of siRNA/MSN delivered from electrospun scaffolds through surface adsorption and nanofiber encapsulation. We showed that this method enhances siRNA transfection efficiency and sustained targeted proteins silencing in vitro and in vivo. As a proof of concept, in this study, we targeted collagen type I expression to modulate fibrous capsule formation. However this platform can be applied to the release and transfection of siRNA or miRNA in cancer and tissue engineering applications.
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Affiliation(s)
- Coline Pinese
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 637459 Singapore, Singapore; Artificial Biopolymers Department, Max Mousseron Institute of Biomolecules (IBMM), UMR CNRS 5247, University of Montpellier, Faculty of Pharmacy, Montpellier 34093, France
| | - Junquan Lin
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 637459 Singapore, Singapore
| | - Ulla Milbreta
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 637459 Singapore, Singapore
| | - Mingqiang Li
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Yucai Wang
- Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Kam W Leong
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Sing Yian Chew
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 637459 Singapore, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University, 308232 Singapore, Singapore.
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26
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Chen S, Li R, Li X, Xie J. Electrospinning: An enabling nanotechnology platform for drug delivery and regenerative medicine. Adv Drug Deliv Rev 2018; 132:188-213. [PMID: 29729295 DOI: 10.1016/j.addr.2018.05.001] [Citation(s) in RCA: 207] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/03/2018] [Accepted: 05/01/2018] [Indexed: 02/06/2023]
Abstract
Electrospinning provides an enabling nanotechnology platform for generating a rich variety of novel structured materials in many biomedical applications including drug delivery, biosensing, tissue engineering, and regenerative medicine. In this review article, we begin with a thorough discussion on the method of producing 1D, 2D, and 3D electrospun nanofiber materials. In particular, we emphasize on how the 3D printing technology can contribute to the improvement of traditional electrospinning technology for the fabrication of 3D electrospun nanofiber materials as drug delivery devices/implants, scaffolds or living tissue constructs. We then highlight several notable examples of electrospun nanofiber materials in specific biomedical applications including cancer therapy, guiding cellular responses, engineering in vitro 3D tissue models, and tissue regeneration. Finally, we finish with conclusions and future perspectives of electrospun nanofiber materials for drug delivery and regenerative medicine.
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Yao S, Yu S, Cao Z, Yang Y, Yu X, Mao HQ, Wang LN, Sun X, Zhao L, Wang X. Hierarchically aligned fibrin nanofiber hydrogel accelerated axonal regrowth and locomotor function recovery in rat spinal cord injury. Int J Nanomedicine 2018; 13:2883-2895. [PMID: 29844671 PMCID: PMC5961640 DOI: 10.2147/ijn.s159356] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Designing novel biomaterials that incorporate or mimic the functions of extracellular matrix to deliver precise regulatory signals for tissue regeneration is the focus of current intensive research efforts in tissue engineering and regenerative medicine. METHODS AND RESULTS To mimic the natural environment of the spinal cord tissue, a three-dimensional hierarchically aligned fibrin hydrogel (AFG) with oriented topography and soft stiffness has been fabricated by electrospinning and a concurrent molecular self-assembling process. In this study, the AFG was implanted into a rat dorsal hemisected spinal cord injury model to bridge the lesion site. Host cells invaded promptly along the aligned fibrin hydrogels to form aligned tissue cables in the first week, and then were followed by axonal regrowth. At 4 weeks after the surgery, neurofilament (NF)-positive staining fibers were detected near the rostral end as well as the middle site of defect, which aligned along the tissue cables. Abundant NF- and GAP-43-positive staining indicated new axon regrowth in the oriented tissue cables, which penetrated throughout the lesion site in 8 weeks. Additionally, the abundant blood vessels marked with RECA-1 had reconstructed within the lesion site at 4 weeks after surgery. Basso-Beattie-Bresnahan scoring showed that the locomotor performance of the AFG group recovered much faster than that of blank control group or the random fibrin hydrogel (RFG) group from 2 weeks after surgery. Furthermore, diffusion tensor imaging tractography of MRI confirmed the optimal axon fiber reconstruction compared with the RFG and control groups. CONCLUSION Taken together, our results suggested that the AFG scaffold provided an inductive matrix for accelerating directional host cell invasion, vascular system reconstruction, and axonal regrowth, which could promote and support extensive aligned axonal regrowth and locomotor function recovery.
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Affiliation(s)
- Shenglian Yao
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
- Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Shukui Yu
- Department of Otolaryngology-Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Zheng Cao
- Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Yongdong Yang
- Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing, China
- Department of Orthopedics, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Xing Yu
- Department of Orthopedics, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Hai-Quan Mao
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Lu-Ning Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
| | - Xiaodan Sun
- Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Lingyun Zhao
- Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing, China
| | - Xiumei Wang
- Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing, China
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28
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Chen Q, Jing J, Qi H, Ahmed I, Yang H, Liu X, Lu TL, Boccaccini AR. Electric Field-Assisted Orientation of Short Phosphate Glass Fibers on Stainless Steel for Biomedical Applications. ACS APPLIED MATERIALS & INTERFACES 2018; 10:11529-11538. [PMID: 29504741 DOI: 10.1021/acsami.8b01378] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Structural and compositional modifications of metallic implant surfaces are being actively investigated to achieve improved bone-to-implant bonding. In this study, a strategy to modify bulk metallic surfaces by electrophoretic deposition (EPD) of short phosphate glass fibers (sPGF) is presented. Random and aligned orientation of sPGF embedded in a poly(acrylic acid) matrix is achieved by vertical and horizontal EPD, respectively. The influence of EPD parameters on the degree of alignment is investigated to pave the way for the fabrication of highly aligned sPGF structures in large areas. Importantly, the oriented sPGF structure in the coating, owing to the synergistic effects of bioactive composition and fiber orientation, plays an important role in directional cell migration and enhanced proliferation. Moreover, gene expression of MC3T3-E1 cells cultured with different concentrations of sPGF is thoroughly assessed to elucidate the potential stimulating effect of sPGF on osteogenic differentiation. This study represents an innovative exploitation of EPD to develop textured surfaces by orientation of fibers in the macroscale, which shows great potential for directional functionalization of metallic implants.
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Affiliation(s)
- Qiang Chen
- Institute of Biomaterials, Department of Materials Science and Engineering , University of Erlangen-Nuremberg , Cauerstrasse 6 , Erlangen 91058 , Germany
| | | | | | - Ifty Ahmed
- Faculty of Engineering, Department of Mechanical, Materials and Manufacturing Engineering , University of Nottingham , Nottingham NG 7 2RD , United Kingdom
| | | | - Xianhu Liu
- National Engineering Research Center for Advanced Polymer Processing Technology , Zhengzhou University , Zhengzhou 450002 , China
| | | | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering , University of Erlangen-Nuremberg , Cauerstrasse 6 , Erlangen 91058 , Germany
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29
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Reinwald Y, El Haj AJ. Hydrostatic pressure in combination with topographical cues affects the fate of bone marrow-derived human mesenchymal stem cells for bone tissue regeneration. J Biomed Mater Res A 2018; 106:629-640. [PMID: 28984025 PMCID: PMC5813264 DOI: 10.1002/jbm.a.36267] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 09/13/2017] [Accepted: 09/18/2017] [Indexed: 12/16/2022]
Abstract
Topographical and mechanical cues are vital for cell fate, tissue development in vivo, and to mimic the native cell growth environment in vitro. To date, the combinatory effect of mechanical and topographical cues as not been thoroughly investigated. This study investigates the effect of PCL nanofiber alignment and hydrostatic pressure on stem cell differentiation for bone tissue regeneration. Bone marrow-derived human mesenchymal stem cells were seeded onto standard tissue culture plastic and electrospun random and aligned nanofibers. These substrates were either cultured statically or subjected to intermittent hydrostatic pressure at 270 kPa, 1 Hz for 60 min daily over 21 days in osteogenic medium. Data revealed higher cell metabolic activities for all mechanically stimulated cell culture formats compared with non-stimulated controls; and random fibers compared with aligned fibers. Fiber orientation influenced cell morphology and patterns of calcium deposition. Significant up-regulation of Collagen-I, ALP, and Runx-2 were observed for random and aligned fibers following mechanical stimulation; highest levels of osteogenic markers were expressed when hydrostatic pressure was applied to random fibers. These results indicate that fiber alignment and hydrostatic pressure direct stem cell fate and are important stimulus for tissue regeneration. © 2017 The Authors Journal of Biomedical Materials Research Part A Published by Wiley Periodicals, Inc. J Biomed Mater Res Part A: A: 629-640, 2018.
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Affiliation(s)
- Yvonne Reinwald
- Institute of Science and Technology in Medicine, Keele University, Medical School, Guy Hilton Research Centre, UHNMStoke‐on‐TrentUnited Kingdom
- Department of Engineering, School of Science and TechnologyNottingham Trent UniversityNottinghamUnited Kingdom
| | - Alicia J. El Haj
- Institute of Science and Technology in Medicine, Keele University, Medical School, Guy Hilton Research Centre, UHNMStoke‐on‐TrentUnited Kingdom
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30
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Hong MH, Hong HJ, Pang H, Lee HJ, Yi S, Koh WG. Controlled Release of Growth Factors from Multilayered Fibrous Scaffold for Functional Recoveries in Crushed Sciatic Nerve. ACS Biomater Sci Eng 2018; 4:576-586. [PMID: 33418747 DOI: 10.1021/acsbiomaterials.7b00801] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In this study, we designed and fabricated a multilayered fibrous scaffold capable of the controlled release of multiple growth factors for sciatic nerve regeneration in rats. The scaffold consists of three layers prepared by sequential electrospinning, where the first layer is fabricated using polycaprolactone (PCL)-aligned electrospun nanofibers for the attachment and differentiation of cells toward the direction of the sciatic nerve. The second and third layers are fabricated using poly(lactic-co-glycolic acid) 6535 (PLGA 6535) and 8515 (PLGA 8515), respectively. The resultant three nanofiber layers were stacked and fixed by incorporating hydrogel micropatterns at both ends of nanofiber scaffold, which also facilitated the surgical handling of the multilayered scaffolds. The PLGA layers acted as reservoirs to release growth factors neurotrophin (NT-3), brain-derived neurotrophic factor (BDNF), and platelet-derived growth factor (PDGF). The different biodegradation rate of each PLGA layer enabled the controlled release of multiple growth factors such as NT-3, BDNF, and PDGF with different patterns. In a rat model, the injured nerve was rolled up with the multilayered scaffold loading growth factors, and behavior tests were performed five weeks after surgery. Sciatic functional index (SFI) and mechanical allodynia analysis revealed that the fast release of NT-3 and BDNF from PLGA 6535 and subsequent slow release of PDGF from PLGA 8515 proved to be the greatest aid to neural tissue regeneration. In addition to the biochemical cues from growth factors, the aligned PCL layer that directly contacts the injured nerve could provide topographical stimulation, offering practical assistance to new tissue and cells for directional growth parallel to the sciatic nerve. This study demonstrated that our multilayered scaffold performs a function that can be used to promote locomotor activity and enhance nerve regeneration in combination with align-patterned topography and the controlled release of growth factors.
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Affiliation(s)
- Min-Ho Hong
- Department of Neurosurgery, Spine and Spinal Cord Institute, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
| | - Hye Jin Hong
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Haejeong Pang
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Hyo-Jung Lee
- Department of Neurosurgery, Spine and Spinal Cord Institute, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
| | - Seong Yi
- Department of Neurosurgery, Spine and Spinal Cord Institute, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
| | - Won-Gun Koh
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
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31
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Satish A, Korrapati PS. Tailored release of triiodothyronine and retinoic acid from a spatio-temporally fabricated nanofiber composite instigating neuronal differentiation. NANOSCALE 2017; 9:14565-14580. [PMID: 28932862 DOI: 10.1039/c7nr05918c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Regeneration of the central and peripheral nervous system is challenging since the functional restoration of injured nerves is an incredible task. The fabrication of an ideal nerve guide that fulfills the requirement to regenerate nerve tissue is a herculean challenge requiring a combination of both biochemical and topographical cues. The present study explores the combinatorial effect of aligned nanofibers and the regulated delivery of triiodothyronine and retinoic acid on nerve regeneration. A sequential release mechanism is adopted in fabricating the nanofiber scaffold, with triiodothyronine incorporated into the nanofiber shell ensuring its prior release, followed by retinoic acid (entrapped within zein nanoparticles) from the core. The composite nanofibers thus fabricated possess excellent mechanical, physical and thermal properties and good topographical morphology and were highly biocompatible. The nanofibers were scrutinized for their efficacy in stimulating differentiation to a neuronal phenotype. The elongation factor (E-factor) of the neural cells had doubled in the bioactive incorporated composite compared to other scaffolds, as observed on phalloidin staining of their cytoskeleton, which endorsed enhanced neural differentiation on the fabricated nanofiber scaffold. There was a significant increase in the expression of neural-lineage specific markers on investigation of mRNA by real time PCR, showing a 10 fold increase in the gene expression of β-III-tubulin, a 5.5 fold increase for microtubule associated protein 2 gene and 3.5 fold for neurofilament M gene in the cells cultured over bioactive incorporated aligned nanofiber composites. Similarly protein expression was analyzed by immunofluorescence and flow cytometry studies, which showed an increase in the expression of β-III-tubulin in the composite nanofiber. This corroborates that neuronal differentiation is enhanced by the aligned nanotopography and spatio-temporal delivery of triiodothyronine and retinoic acid, opening avenues for nerve regenerative graft fabrication.
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Affiliation(s)
- Aishwarya Satish
- Biological Materials Laboratory, CSIR-Central Leather Research Institute, Chennai, India-600 020.
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32
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Taylor AC, González CH, Miller BS, Edgington RJ, Ferretti P, Jackman RB. Surface functionalisation of nanodiamonds for human neural stem cell adhesion and proliferation. Sci Rep 2017; 7:7307. [PMID: 28779095 PMCID: PMC5544760 DOI: 10.1038/s41598-017-07361-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 06/26/2017] [Indexed: 12/17/2022] Open
Abstract
Biological systems interact with nanostructured materials on a sub-cellular level. These interactions may govern cell behaviour and the precise control of a nanomaterial's structure and surface chemistry allow for a high degree of tunability to be achieved. Cells are surrounded by an extra-cellular matrix with nano-topographical properties. Diamond based materials, and specifically nanostructured diamond has attracted much attention due to its extreme electrical and mechanical properties, chemical inertness and biocompatibility. Here the interaction of nanodiamond monolayers with human Neural Stem Cells (hNSCs) has been investigated. The effect of altering surface functionalisation of nanodiamonds on hNSC adhesion and proliferation has shown that confluent cellular attachment occurs on oxygen terminated nanodiamonds (O-NDs), but not on hydrogen terminated nanodiamonds (H-NDs). Analysis of H and O-NDs by Atomic Force Microscopy, contact angle measurements and protein adsorption suggests that differences in topography, wettability, surface charge and protein adsorption of these surfaces may underlie the difference in cellular adhesion of hNSCs reported here.
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Affiliation(s)
- Alice C Taylor
- London Centre for Nanotechnology and Department of Electronic and Electrical Engineering, University College London, 17-19 Gordon Street, London, WC1H 0AH, UK
| | - Citlali Helenes González
- Stem Cell and Regenerative Medicine Section, UCL Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK
| | - Benjamin S Miller
- London Centre for Nanotechnology and Department of Electronic and Electrical Engineering, University College London, 17-19 Gordon Street, London, WC1H 0AH, UK
| | - Robert J Edgington
- London Centre for Nanotechnology and Department of Electronic and Electrical Engineering, University College London, 17-19 Gordon Street, London, WC1H 0AH, UK
| | - Patrizia Ferretti
- Stem Cell and Regenerative Medicine Section, UCL Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK
| | - Richard B Jackman
- London Centre for Nanotechnology and Department of Electronic and Electrical Engineering, University College London, 17-19 Gordon Street, London, WC1H 0AH, UK.
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33
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Marcus M, Baranes K, Park M, Choi IS, Kang K, Shefi O. Interactions of Neurons with Physical Environments. Adv Healthc Mater 2017. [PMID: 28640544 DOI: 10.1002/adhm.201700267] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Nerve growth strongly relies on multiple chemical and physical signals throughout development and regeneration. Currently, a cure for injured neuronal tissue is an unmet need. Recent advances in fabrication technologies and materials led to the development of synthetic interfaces for neurons. Such engineered platforms that come in 2D and 3D forms can mimic the native extracellular environment and create a deeper understanding of neuronal growth mechanisms, and ultimately advance the development of potential therapies for neuronal regeneration. This progress report aims to present a comprehensive discussion of this field, focusing on physical feature design and fabrication with additional information about considerations of chemical modifications. We review studies of platforms generated with a range of topographies, from micro-scale features down to topographical elements at the nanoscale that demonstrate effective interactions with neuronal cells. Fabrication methods are discussed as well as their biological outcomes. This report highlights the interplay between neuronal systems and the important roles played by topography on neuronal differentiation, outgrowth, and development. The influence of substrate structures on different neuronal cells and parameters including cell fate, outgrowth, intracellular remodeling, gene expression and activity is discussed. Matching these effects to specific needs may lead to the emergence of clinical solutions for patients suffering from neuronal injuries or brain-machine interface (BMI) applications.
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Affiliation(s)
- Michal Marcus
- Faculty of Engineering and Bar-Ilan Institute for Nanotechnology and Advanced Materials; Bar-Ilan University; Ramat-Gan 5290002 Israel
| | - Koby Baranes
- Faculty of Engineering and Bar-Ilan Institute for Nanotechnology and Advanced Materials; Bar-Ilan University; Ramat-Gan 5290002 Israel
| | - Matthew Park
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 34141 Korea
| | - Insung S. Choi
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 34141 Korea
| | - Kyungtae Kang
- Department of Applied Chemistry; Kyung Hee University; Yongin Gyeonggi 17104 Korea
| | - Orit Shefi
- Faculty of Engineering and Bar-Ilan Institute for Nanotechnology and Advanced Materials; Bar-Ilan University; Ramat-Gan 5290002 Israel
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34
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Hou XQ, Wang L, Wang FG, Zhao XM, Zhang HT. Combination of RNA Interference and Stem Cells for Treatment of Central Nervous System Diseases. Genes (Basel) 2017; 8:genes8050135. [PMID: 28481269 PMCID: PMC5448009 DOI: 10.3390/genes8050135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/27/2017] [Accepted: 04/28/2017] [Indexed: 12/31/2022] Open
Abstract
RNA interference (RNAi), including microRNAs, is an important player in the mediation of differentiation and migration of stem cells via target genes. It is used as a potential strategy for gene therapy for central nervous system (CNS) diseases. Stem cells are considered vectors of RNAi due to their capacity to deliver RNAi to other cells. In this review, we discuss the recent advances in studies of RNAi pathways in controlling neuronal differentiation and migration of stem cells. We also highlight the utilization of a combination of RNAi and stem cells in treatment of CNS diseases.
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Affiliation(s)
- Xue-Qin Hou
- Institute of Pharmacology, Taishan Medical University, Taian 271016, Shandong, China.
| | - Lei Wang
- Institute of Pharmacology, Taishan Medical University, Taian 271016, Shandong, China.
| | - Fu-Gang Wang
- Institute of Pharmacology, Taishan Medical University, Taian 271016, Shandong, China.
| | - Xiao-Min Zhao
- Institute of Pharmacology, Taishan Medical University, Taian 271016, Shandong, China.
| | - Han-Ting Zhang
- Institute of Pharmacology, Taishan Medical University, Taian 271016, Shandong, China.
- Departments of Behavioral Medicine & Psychiatry and Physiology & Pharmacology, Blanchette Rockefeller Neurosciences Institute, West Virginia University Health Sciences Center, Morgantown, WV 26506, USA.
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35
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Wu J, Xie L, Lin WZY, Chen Q. Biomimetic nanofibrous scaffolds for neural tissue engineering and drug development. Drug Discov Today 2017; 22:1375-1384. [PMID: 28388393 DOI: 10.1016/j.drudis.2017.03.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 02/16/2017] [Accepted: 03/17/2017] [Indexed: 01/08/2023]
Abstract
Neural tissue engineering aims to develop functional substitutes for damaged tissues, creating many promising opportunities in regeneration medicine and drug discovery. Biomaterial scaffolds routinely provide nerve cells with a physical support for cell growth and regeneration, yielding 3D extracellular matrix to mimic the in vivo cellular microenvironment. Among the various types of cellular scaffolds for reconstruction, biomimetic nanofibrous scaffolds are recognized as appropriate candidates by precisely controlling morphology and shape. Here, we review the current techniques in fabricating biomimetic nanofibrous scaffolds for neural tissue engineering, and describe the impact of nanofiber components on the properties of scaffolds and their uses in therapeutic models and drug development. We also discuss the current challenges and future directions of applying 3D printing and microfluidic technologies in neural tissue engineering.
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Affiliation(s)
- Jing Wu
- School of Science, China University of Geosciences (Beijing), Beijing, China; Department of Chemistry, National University of Singapore, Singapore.
| | - Lili Xie
- College of Chemistry, Fuzhou University, Fuzhou, China.
| | | | - Qiushui Chen
- Department of Chemistry, National University of Singapore, Singapore.
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36
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Nguyen LH, Gao M, Lin J, Wu W, Wang J, Chew SY. Three-dimensional aligned nanofibers-hydrogel scaffold for controlled non-viral drug/gene delivery to direct axon regeneration in spinal cord injury treatment. Sci Rep 2017; 7:42212. [PMID: 28169354 PMCID: PMC5294639 DOI: 10.1038/srep42212] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 01/06/2017] [Indexed: 01/07/2023] Open
Abstract
Spinal cord injuries (SCI) often lead to persistent neurological dysfunction due to failure in axon regeneration. Unfortunately, currently established treatments, such as direct drug administration, do not effectively treat SCI due to rapid drug clearance from our bodies. Here, we introduce a three-dimensional aligned nanofibers-hydrogel scaffold as a bio-functionalized platform to provide sustained non-viral delivery of proteins and nucleic acid therapeutics (small non-coding RNAs), along with synergistic contact guidance for nerve injury treatment. A hemi-incision model at cervical level 5 in the rat spinal cord was chosen to evaluate the efficacy of this scaffold design. Specifically, aligned axon regeneration was observed as early as one week post-injury. In addition, no excessive inflammatory response and scar tissue formation was triggered. Taken together, our results demonstrate the potential of our scaffold for neural tissue engineering applications.
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Affiliation(s)
- Lan Huong Nguyen
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Mingyong Gao
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
- Department of Spine Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Junquan Lin
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Wutian Wu
- School of Biomedical Sciences, The University of Hong Kong Li Ka Shing Faculty of Medicine, Pokfulam, Hong Kong SAR, China
- Research Center of Reproduction, Development and Growth, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
- State Key Laboratory of Brain and Cognitive Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
- Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, PR China
| | - Jun Wang
- The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science & Technology of China, Hefei, Anhui 230027, PR China
| | - Sing Yian Chew
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
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Quintiliano K, Crestani T, Silveira D, Helfer VE, Rosa A, Balbueno E, Steffens D, Jotz GP, Pilger DA, Pranke P. Neural Differentiation of Mesenchymal Stem Cells on Scaffolds for Nerve Tissue Engineering Applications. Cell Reprogram 2016; 18:369-381. [DOI: 10.1089/cell.2016.0024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Kerlin Quintiliano
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Post-graduate Program in Neuroscience, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Thayane Crestani
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Post-graduate Program in Neuroscience, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Davi Silveira
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Annelise Rosa
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Post-graduate Program in Material Science, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Eduardo Balbueno
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Daniela Steffens
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Post Graduate Program in Biological Science: Physiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Centro Universitário Ritter dos Reis—UniRitter
| | - Geraldo Pereira Jotz
- Post-graduate Program in Neuroscience, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Department of Morphological Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Diogo André Pilger
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Patricia Pranke
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Post-graduate Program in Material Science, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Post Graduate Program in Biological Science: Physiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Stem Cell Research Institute. Porto Alegre, Brazil
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Irvine SA, Venkatraman SS. Bioprinting and Differentiation of Stem Cells. Molecules 2016; 21:E1188. [PMID: 27617991 PMCID: PMC6273261 DOI: 10.3390/molecules21091188] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 08/26/2016] [Accepted: 08/26/2016] [Indexed: 01/10/2023] Open
Abstract
The 3D bioprinting of stem cells directly into scaffolds offers great potential for the development of regenerative therapies; in particular for the fabrication of organ and tissue substitutes. For this to be achieved; the lineage fate of bioprinted stem cell must be controllable. Bioprinting can be neutral; allowing culture conditions to trigger differentiation or alternatively; the technique can be designed to be stimulatory. Such factors as the particular bioprinting technique; bioink polymers; polymer cross-linking mechanism; bioink additives; and mechanical properties are considered. In addition; it is discussed that the stimulation of stem cell differentiation by bioprinting may lead to the remodeling and modification of the scaffold over time matching the concept of 4D bioprinting. The ability to tune bioprinting properties as an approach to fabricate stem cell bearing scaffolds and to also harness the benefits of the cells multipotency is of considerable relevance to the field of biomaterials and bioengineering.
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Affiliation(s)
- Scott A Irvine
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
| | - Subbu S Venkatraman
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
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Lotz EM, Olivares-Navarrete R, Berner S, Boyan BD, Schwartz Z. Osteogenic response of human MSCs and osteoblasts to hydrophilic and hydrophobic nanostructured titanium implant surfaces. J Biomed Mater Res A 2016; 104:3137-3148. [DOI: 10.1002/jbm.a.35852] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 07/11/2016] [Accepted: 07/29/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Ethan M. Lotz
- Department of Biomedical Engineering; School of Engineering; Virginia Commonwealth University; Richmond Virginia 23284
| | - Rene Olivares-Navarrete
- Department of Biomedical Engineering; School of Engineering; Virginia Commonwealth University; Richmond Virginia 23284
| | | | - Barbara D. Boyan
- Department of Biomedical Engineering; School of Engineering; Virginia Commonwealth University; Richmond Virginia 23284
- Wallace H. Coulter Department of Biomedical Engineering; Georgia Institute of Technology; Atlanta Georgia 30332
| | - Zvi Schwartz
- Department of Biomedical Engineering; School of Engineering; Virginia Commonwealth University; Richmond Virginia 23284
- Department of Periodontics; University of Texas Health Science Center at San Antonio; San Antonio Texas 78229
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Jin E, Lee PT, Jeon WB, Li WJ. Effects of Elastin-Like Peptide on Regulation of Human Mesenchymal Stem Cell Behavior. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2016. [DOI: 10.1007/s40883-016-0015-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Yao S, Liu X, Yu S, Wang X, Zhang S, Wu Q, Sun X, Mao H. Co-effects of matrix low elasticity and aligned topography on stem cell neurogenic differentiation and rapid neurite outgrowth. NANOSCALE 2016; 8:10252-65. [PMID: 27124547 DOI: 10.1039/c6nr01169a] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The development of novel biomaterials that deliver precise regulatory signals to direct stem cell fate for nerve regeneration is the focus of current intensive research efforts. In this study, a hierarchically aligned fibrillar fibrin hydrogel (AFG) that was fabricated through electrospinning and the concurrent molecular self-assembly process mimics both the soft and oriented features of nerve tissue, thus providing hybrid biophysical cues to instruct cell behavior in vitro and in vivo. The electrospun hydrogels were examined by scanning electron microscopy (SEM), polarized light microscopy, small angle X-ray scattering assay and atomic force microscopy (AFM), showing a hierarchically linear-ordered structure from the nanoscale to the macroscale with a soft elastic character (elasticity ∼1 kPa). We found that this low elasticity and aligned topography of AFG exhibit co-effects on promoting the neurogenic differentiation of human umbilical cord mesenchymal stem cells (hUMSCs) in comparison to random fibrin hydrogel (RFG) and tissue culture plate (TCP) control after two week cell culture in growth medium lacking supplementation with soluble neurogenic induction factors. In addition, AFG also induces dorsal root ganglion (DRG) neurons to rapidly project numerous long neurite outgrowths longitudinally along the AFG fibers for a total neurite extension distance of 1.96 mm in three days in the absence of neurotrophic factor supplementation. Moreover, the AFG implanted in a rat T9 dorsal hemisection spinal cord injury model was found to promote endogenous neural cell fast migration and axonal invasion along AFG fibers, resulting in aligned tissue cables in vivo. Our results suggest that matrix stiffness and aligned topography may instruct stem cell neurogenic differentiation and rapid neurite outgrowth, providing great promise for biomaterial design for applications in nerve regeneration.
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Affiliation(s)
- Shenglian Yao
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
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Bishi DK, Mathapati S, Venugopal JR, Guhathakurta S, Cherian KM, Verma RS, Ramakrishna S. A Patient-Inspired Ex Vivo Liver Tissue Engineering Approach with Autologous Mesenchymal Stem Cells and Hepatogenic Serum. Adv Healthc Mater 2016; 5:1058-70. [PMID: 26890619 DOI: 10.1002/adhm.201500897] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 12/27/2015] [Indexed: 01/07/2023]
Abstract
Design and development of ex vivo bioengineered liver tissue substitutes intended for subsequent in vivo implantation has been considered therapeutically relevant to treat many liver diseases that require whole-organ replacement on a long-term basis. The present study focus on patient-inspired ex vivo liver tissue engineering strategy to generate hepatocyte-scaffold composite by combining bone marrow mesenchymal stem cells (BMSCs) derived from cardiac failure patients with secondary hyperbilirubinemia as primers of hepatic differentiation and hepatocyte growth factor (HGF)-enriched sera from same individuals as hepatic inducer. A biodegradable and implantable electrospun fibrous mesh of poly-l-lactic acid (PLLA) and gelatin is used as supporting matrix (average fiber diameter = 285 ± 64 nm, porosity = 81 ± 4%, and average pore size = 1.65 ± 0.77 μm). The fibrous mesh supports adhesion, proliferation, and hepatic commitment of patient-derived BMSCs of adequate stemness using HGF-enriched sera generating metabolically competent hepatocyte-like cells, which is comparable to the hepatic induction with defined recombinant growth factor cocktail. The observed results confirm the combinatorial effects of nanofiber topography and biochemical cues in guiding hepatic specification of BMSCs. The fibrous mesh-hepatocyte construct developed in this study using natural growth factors and BMSCs of same individual is promising for future therapeutic applications in treating damaged livers.
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Affiliation(s)
- Dillip K. Bishi
- Centre for Nanofibers and Nanotechnology; E3 # 05-12; Nanoscience and Nanotechnology Initiative; National University of Singapore; 2 Engineering Drive 3 117576 Singapore
- Stem Cells and Tissue Engineering Laboratory; International Centre for Cardiothoracic and Vascular Diseases; Frontier Lifeline Hospital; Chennai 600101 India
- Stem Cells and Molecular Biology Laboratory; Department of Biotechnology; Indian Institute of Technology Madras; Chennai 600036 India
| | - Santosh Mathapati
- Centre for Nanofibers and Nanotechnology; E3 # 05-12; Nanoscience and Nanotechnology Initiative; National University of Singapore; 2 Engineering Drive 3 117576 Singapore
- Stem Cells and Tissue Engineering Laboratory; International Centre for Cardiothoracic and Vascular Diseases; Frontier Lifeline Hospital; Chennai 600101 India
- Stem Cells and Molecular Biology Laboratory; Department of Biotechnology; Indian Institute of Technology Madras; Chennai 600036 India
| | - Jayarama R. Venugopal
- Centre for Nanofibers and Nanotechnology; E3 # 05-12; Nanoscience and Nanotechnology Initiative; National University of Singapore; 2 Engineering Drive 3 117576 Singapore
| | - Soma Guhathakurta
- Department of Engineering Design; Indian Institute of Technology Madras; Chennai India
| | - Kotturathu M. Cherian
- Stem Cells and Tissue Engineering Laboratory; International Centre for Cardiothoracic and Vascular Diseases; Frontier Lifeline Hospital; Chennai 600101 India
| | - Rama S. Verma
- Stem Cells and Molecular Biology Laboratory; Department of Biotechnology; Indian Institute of Technology Madras; Chennai 600036 India
| | - Seeram Ramakrishna
- Centre for Nanofibers and Nanotechnology; E3 # 05-12; Nanoscience and Nanotechnology Initiative; National University of Singapore; 2 Engineering Drive 3 117576 Singapore
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Park KD, Wang X, Lee JY, Park KM, Zhang S, Noh I. Research trends in biomimetic medical materials for tissue engineering: commentary. Biomater Res 2016; 20:8. [PMID: 27026826 PMCID: PMC4810519 DOI: 10.1186/s40824-016-0053-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 02/24/2016] [Indexed: 12/21/2022] Open
Abstract
We introduce our active experts’ communications and reviews (Part II) of 2015 Korea-China Joint Symposium on Biomimetic Medical Materials in Republic of Korea, which reflect their perspectives on current research trends of biomimetic medical materials for tissue regeneration in both Korea and China. The communications covered three topics of biomimetics, i.e., 1) hydrogel for therapeutics and extracellular matrix environments, 2) design of electrical polymers for communications between electrical sources and biological systems and 3) design of biomaterials for nerve tissue engineering. The reviews in the Part II will cover biomimetics of 3D bioprinting materials, surface modifications, nano/micro-technology as well as clinical aspects of biomaterials for cartilage.
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Affiliation(s)
- Ki Dong Park
- Department of Molecular Science and Technology, Ajou University, 206 Worldcup-ro, Yeongtong-gu, Suwon, 16499 Korea
| | - Xiumei Wang
- School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 China
| | - Jae Young Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-715 Korea
| | - Kyung Min Park
- College of Life Science and Bioengineering, Incheon National University, Incheon, 22012 Korea
| | - ShengMin Zhang
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Insup Noh
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811 Korea.,Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, 01811 Korea
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Moghadasi Boroujeni S, Mashayekhan S, Vakilian S, Ardeshirylajimi A, Soleimani M. The synergistic effect of surface topography and sustained release of TGF-β1 on myogenic differentiation of human mesenchymal stem cells. J Biomed Mater Res A 2016; 104:1610-21. [DOI: 10.1002/jbm.a.35686] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 02/01/2016] [Accepted: 02/10/2016] [Indexed: 01/20/2023]
Affiliation(s)
| | - Shohreh Mashayekhan
- Department of Chemical and Petroleum Engineering; Sharif University of Technology; Tehran 11365-8639 Iran
| | - Saeid Vakilian
- Department of Chemical and Petroleum Engineering; Sharif University of Technology; Tehran 11365-8639 Iran
- Stem Cell Technology Research Center; Tehran 1997775555 Iran
| | | | - Masoud Soleimani
- Department of Hematology, Faculty of Medical Sciences; Tarbiat Modarres University; Tehran 14115-111 Iran
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45
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Feng ZV, Chen WS, Keratithamkul K, Stoick M, Kapala B, Johnson E, Huang AC, Chin TY, Chen-Yang YW, Yang ML. Degradation of the electrospun silica nanofiber in a biological medium for primary hippocampal neuron - effect of surface modification. Int J Nanomedicine 2016; 11:729-41. [PMID: 27013873 PMCID: PMC4777233 DOI: 10.2147/ijn.s93651] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
In this work, silica nanofibers (SNFs) were prepared by an electrospinning method and modified with poly-d-lysine (PDL) or (3-aminopropyl) trimethoxysilane (APTS) making biocompatible and degradable substrates for neuronal growth. The as-prepared SNF, modified SNF-PDL, and SNF-APTS were evaluated using scanning electron microscopy, nitrogen adsorption/desorption isotherms, contact angle measurements, and inductively coupled plasma atomic emission spectroscopy. Herein, the scanning electron microscopic images revealed that dissolution occurred in a corrosion-like manner by enlarging porous structures, which led to loss of structural integrity. In addition, covalently modified SNF-APTS with more hydrophobic surfaces and smaller surface areas resulted in significantly slower dissolution compared to SNF and physically modified SNF-PDL, revealing that different surface modifications can be used to tune the dissolution rate. Growth of primary hippocampal neuron on all substrates led to a slower dissolution rate. The three-dimensional SNF with larger surface area and higher surface density of the amino group promoted better cell attachment and resulted in an increased neurite density. This is the first known work addressing the degradability of SNF substrate in physiological conditions with neuron growth in vitro, suggesting a strong potential for the applications of the material in controlled drug release.
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Affiliation(s)
- Z Vivian Feng
- Chemistry Department, Augsburg College, Minneapolis, MN, USA
| | - Wen Shuo Chen
- Department of Chemistry, Center for Nanotechnology, Center for Biomedical Technology, Chung Yuan Christian University, Chung Li, Taiwan, Republic of China
| | | | - Michael Stoick
- Chemistry Department, Augsburg College, Minneapolis, MN, USA
| | - Brittany Kapala
- Department of Science, Concordia University Saint Paul, Saint Paul, MN, USA
| | - Eryn Johnson
- Department of Science, Concordia University Saint Paul, Saint Paul, MN, USA
| | - An-Chi Huang
- Department of Chemistry, Center for Nanotechnology, Center for Biomedical Technology, Chung Yuan Christian University, Chung Li, Taiwan, Republic of China
| | - Ting Yu Chin
- Department of Bioscience Technology, Chung Yuan Christian University, Chung Li, Taiwan, Republic of China
| | - Yui Whei Chen-Yang
- Department of Chemistry, Center for Nanotechnology, Center for Biomedical Technology, Chung Yuan Christian University, Chung Li, Taiwan, Republic of China
| | - Mong-Lin Yang
- Department of Science, Concordia University Saint Paul, Saint Paul, MN, USA
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Sciancalepore AG, Moffa M, Carluccio S, Romano L, Netti GS, Prattichizzo C, Pisignano D. Bioactive Nanofiber Matrices Functionalized with Fibronectin-Mimetic Peptides Driving the Alignment and Tubular Commitment of Adult Renal Stem Cells. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500370] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Anna G. Sciancalepore
- Istituto Nanoscienze-CNR; Euromediterranean Center for Nanomaterial Modelling and Technology (ECMT); Via Arnesano I-73100 Lecce Italy
| | - Maria Moffa
- Istituto Nanoscienze-CNR; Euromediterranean Center for Nanomaterial Modelling and Technology (ECMT); Via Arnesano I-73100 Lecce Italy
| | - Simonetta Carluccio
- Dipartimento di Scienze e Tecnologie Biologiche e Ambientali; Università del Salento; Via provinciale per Monteroni I-73100 Lecce Italy
| | - Luigi Romano
- Dipartimento di Matematica e Fisica “Ennio De Giorgi”; Università del Salentoand Istituto Nanoscienze-CNR; Euromediterranean Center for Nanomaterial Modelling and Technology (ECMT); Via Arnesano I-73100 Lecce Italy
| | - Giuseppe S. Netti
- Clinical Pathology Unit; Department of Medical and Surgical Sciences; University of Foggia; Hospital University “Ospedali Riuniti”; viale Luigi Pinto I-71122 Foggia Italy
| | - Clelia Prattichizzo
- Clinical Pathology Unit; Department of Medical and Surgical Sciences; University of Foggia; Hospital University “Ospedali Riuniti”; viale Luigi Pinto I-71122 Foggia Italy
| | - Dario Pisignano
- Dipartimento di Matematica e Fisica “Ennio De Giorgi”; Università del Salentoand Istituto Nanoscienze-CNR; Euromediterranean Center for Nanomaterial Modelling and Technology (ECMT); Via Arnesano I-73100 Lecce Italy
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Gao X, Zhang X, Song J, Xu X, Xu A, Wang M, Xie B, Huang E, Deng F, Wei S. Osteoinductive peptide-functionalized nanofibers with highly ordered structure as biomimetic scaffolds for bone tissue engineering. Int J Nanomedicine 2015; 10:7109-28. [PMID: 26604759 PMCID: PMC4655957 DOI: 10.2147/ijn.s94045] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The construction of functional biomimetic scaffolds that recapitulate the topographical and biochemical features of bone tissue extracellular matrix is now of topical interest in bone tissue engineering. In this study, a novel surface-functionalized electrospun polycaprolactone (PCL) nanofiber scaffold with highly ordered structure was developed to simulate the critical features of native bone tissue via a single step of catechol chemistry. Specially, under slightly alkaline aqueous solution, polydopamine (pDA) was coated on the surface of aligned PCL nanofibers after electrospinning, followed by covalent immobilization of bone morphogenetic protein-7-derived peptides onto the pDA-coated nanofiber surface. Contact angle measurement, Raman spectroscopy, and X-ray photoelectron spectroscopy confirmed the presence of pDA and peptides on PCL nanofiber surface. Our results demonstrated that surface modification with osteoinductive peptides could improve cytocompatibility of nanofibers in terms of cell adhesion, spreading, and proliferation. Most importantly, Alizarin Red S staining, quantitative real-time polymerase chain reaction, immunostaining, and Western blot revealed that human mesenchymal stem cells cultured on aligned nanofibers with osteoinductive peptides exhibited enhanced osteogenic differentiation potential than cells on randomly oriented nanofibers. Furthermore, the aligned nanofibers with osteoinductive peptides could direct osteogenic differentiation of human mesenchymal stem cells even in the absence of osteoinducting factors, suggesting superior osteogenic efficacy of biomimetic design that combines the advantages of osteoinductive peptide signal and highly ordered nanofibers on cell fate decision. The presented peptide-decorated bone-mimic nanofiber scaffolds hold a promising potential in the context of bone tissue engineering.
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Affiliation(s)
- Xiang Gao
- College of Stomatology, Chongqing Medical University, Chongqing, Beijing, People's Republic of China ; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Chongqing, Beijing, People's Republic of China
| | - Xiaohong Zhang
- Center for Biomedical Materials and Tissue Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, People's Republic of China
| | - Jinlin Song
- College of Stomatology, Chongqing Medical University, Chongqing, Beijing, People's Republic of China ; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Chongqing, Beijing, People's Republic of China
| | - Xiao Xu
- Department of Oral and Maxillofacial Surgery, Laboratory of Interdisciplinary Studies, Peking University School and Hospital of Stomatology, Beijing, People's Republic of China
| | - Anxiu Xu
- College of Stomatology, Chongqing Medical University, Chongqing, Beijing, People's Republic of China
| | - Mengke Wang
- Department of Oral and Maxillofacial Surgery, Laboratory of Interdisciplinary Studies, Peking University School and Hospital of Stomatology, Beijing, People's Republic of China
| | - Bingwu Xie
- College of Stomatology, Chongqing Medical University, Chongqing, Beijing, People's Republic of China
| | - Enyi Huang
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Chongqing, Beijing, People's Republic of China
| | - Feng Deng
- College of Stomatology, Chongqing Medical University, Chongqing, Beijing, People's Republic of China ; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Chongqing, Beijing, People's Republic of China
| | - Shicheng Wei
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Chongqing, Beijing, People's Republic of China ; Center for Biomedical Materials and Tissue Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, People's Republic of China ; Department of Oral and Maxillofacial Surgery, Laboratory of Interdisciplinary Studies, Peking University School and Hospital of Stomatology, Beijing, People's Republic of China
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48
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Comparison of Capability of Human Bone Marrow Mesenchymal Stem Cells and Endometrial Stem Cells to Differentiate into Motor Neurons on Electrospun Poly(ε-caprolactone) Scaffold. Mol Neurobiol 2015; 53:5278-87. [PMID: 26420037 DOI: 10.1007/s12035-015-9442-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 09/10/2015] [Indexed: 12/20/2022]
Abstract
Human endometrial and bone marrow-derived mesenchymal stem cells can be differentiated into a number of cell lineages. Mesenchymal stem cells (MSCs) are potential candidates for cellular therapy. The differentiation of human bone marrow MSCs (hBM-MSCs) and endometrial stem cells (hEnSCs) into motor neuron-like cells has been rarely investigated previously; however, the comparison between these stem cells when they are differentiated into motor neuron-like cell is yet to be studied. The aim of this study was therefore to investigate and compare the capability of hBM-MSCs and hEnSCs cultured on tissue culture polystyrene (TCP) and poly ε-caprolactone (PCL) nanofibrous scaffold to differentiate into motor neuron-like cells in the presence of neural inductive molecules. Engineered hBM-MSCs and hEnSCs seeded on PCL nanofibrous scaffold were differentiated into beta-tubulin III, islet-1, Neurofilament-H (NF-H), HB9, Pax6, and choactase-positive motor neurons by immunostaining and real-time PCR, in response to the signaling molecules. The data obtained from PCR and immunostaining showed that the expression of motor neuron markers of both hBM-MSCs and hEnSCs differentiated cells on PCL scaffold are significantly higher than that of the control group. The expression of these markers in hEnSCs differentiated cells was higher than that in hBM-MSCs. However, this difference was not statistically significant. In conclusion, differentiated hBM-MSCs and hEnSCs on PCL can provide a suitable three-dimensional situation for neuronal survival and outgrowth for regeneration of the central nervous system. Both cells may be potential candidates for cellular therapy in motor neuron disorders. However, differentiation of hEnSCs into motor neuron-like cells was better than hBM-MSCs.
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Kerativitayanan P, Carrow JK, Gaharwar AK. Nanomaterials for Engineering Stem Cell Responses. Adv Healthc Mater 2015; 4:1600-27. [PMID: 26010739 DOI: 10.1002/adhm.201500272] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Indexed: 12/18/2022]
Abstract
Recent progress in nanotechnology has stimulated the development of multifunctional biomaterials for tissue engineering applications. Synergistic interactions between nanomaterials and stem cell engineering offer numerous possibilities to address some of the daunting challenges in regenerative medicine, such as controlling trigger differentiation, immune reactions, limited supply of stem cells, and engineering complex tissue structures. Specifically, the interactions between stem cells and their microenvironment play key roles in controlling stem cell fate, which underlines therapeutic success. However, the interactions between nanomaterials and stem cells are not well understood, and the effects of the nanomaterials shape, surface morphology, and chemical functionality on cellular processes need critical evaluation. In this Review, focus is put on recent development in nanomaterial-stem cell interactions, with specific emphasis on their application in regenerative medicine. Further, the emerging technologies based on nanomaterials developed over the past decade for stem cell engineering are reviewed, as well as the potential applications of these nanomaterials in tissue regeneration, stem cell isolation, and drug/gene delivery. It is anticipated that the enhanced understanding of nanomaterial-stem cell interactions will facilitate improved biomaterial design for a range of biomedical and biotechnological applications.
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Affiliation(s)
| | - James K. Carrow
- Department of Biomedical Engineering; Texas A&M University; College Station TX 77843 USA
| | - Akhilesh K. Gaharwar
- Department of Biomedical Engineering; Texas A&M University; College Station TX 77843 USA
- Department of Materials Science and Engineering; Texas A&M University; College Station TX 77843 USA
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Trends in the design of nerve guidance channels in peripheral nerve tissue engineering. Prog Neurobiol 2015; 131:87-104. [DOI: 10.1016/j.pneurobio.2015.06.001] [Citation(s) in RCA: 195] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 06/03/2015] [Accepted: 06/09/2015] [Indexed: 01/01/2023]
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