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Aazmi A, Zhang D, Mazzaglia C, Yu M, Wang Z, Yang H, Huang YYS, Ma L. Biofabrication methods for reconstructing extracellular matrix mimetics. Bioact Mater 2024; 31:475-496. [PMID: 37719085 PMCID: PMC10500422 DOI: 10.1016/j.bioactmat.2023.08.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/23/2023] [Accepted: 08/24/2023] [Indexed: 09/19/2023] Open
Abstract
In the human body, almost all cells interact with extracellular matrices (ECMs), which have tissue and organ-specific compositions and architectures. These ECMs not only function as cellular scaffolds, providing structural support, but also play a crucial role in dynamically regulating various cellular functions. This comprehensive review delves into the examination of biofabrication strategies used to develop bioactive materials that accurately mimic one or more biophysical and biochemical properties of ECMs. We discuss the potential integration of these ECM-mimics into a range of physiological and pathological in vitro models, enhancing our understanding of cellular behavior and tissue organization. Lastly, we propose future research directions for ECM-mimics in the context of tissue engineering and organ-on-a-chip applications, offering potential advancements in therapeutic approaches and improved patient outcomes.
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Affiliation(s)
- Abdellah Aazmi
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, 310058, China
- School of Mechanical Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Duo Zhang
- Department of Engineering, University of Cambridge, Cambridge, United Kingdom
- School of Medicine, The Chinese University of Hong Kong, Shenzhen, Guangdong, 51817, China
| | - Corrado Mazzaglia
- Department of Engineering, University of Cambridge, Cambridge, United Kingdom
| | - Mengfei Yu
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Zhen Wang
- Center for Laboratory Medicine, Allergy Center, Department of Transfusion Medicine, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Huayong Yang
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, 310058, China
- School of Mechanical Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Yan Yan Shery Huang
- Department of Engineering, University of Cambridge, Cambridge, United Kingdom
| | - Liang Ma
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, 310058, China
- School of Mechanical Engineering, Zhejiang University, Hangzhou, 310058, China
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2
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Gao X, Cheng W, Zhang X, Zhou Z, Ding Z, Zhou X, Lu Q, Kaplan DL. Nerve Growth Factor-Laden Anisotropic Silk Nanofiber Hydrogels to Regulate Neuronal/Astroglial Differentiation for Scarless Spinal Cord Repair. ACS APPLIED MATERIALS & INTERFACES 2022; 14:3701-3715. [PMID: 35006667 DOI: 10.1021/acsami.1c19229] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Scarless spinal cord regeneration remains a challenge due to the complicated microenvironment at lesion sites. In this study, the nerve growth factor (NGF) was immobilized in silk protein nanofiber hydrogels with hierarchical anisotropic microstructures to fabricate bioactive systems that provide multiple physical and biological cues to address spinal cord injury (SCI). The NGF maintained bioactivity inside the hydrogels and regulated the neuronal/astroglial differentiation of neural stem cells. The aligned microstructures facilitated the migration and orientation of cells, which further stimulated angiogenesis and neuron extensions both in vitro and in vivo. In a severe rat long-span hemisection SCI model, these hydrogel matrices reduced scar formation and achieved the scarless repair of the spinal cord and effective recovery of motor functions. Histological analysis confirmed the directional regenerated neuronal tissues, with a similar morphology to that of the normal spinal cord. The in vitro and in vivo results showed promising utility for these NGF-laden silk hydrogels for spinal cord regeneration while also demonstrating the feasibility of cell-free bioactive matrices with multiple cues to regulate endogenous cell responses.
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Affiliation(s)
- Xiang Gao
- National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People's Republic of China
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou 215000, People's Republic of China
| | - Weinan Cheng
- Department of Orthopedics, the First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361000, People's Republic of China
| | - Xiaoyi Zhang
- National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People's Republic of China
| | - Zhengyu Zhou
- Laboratory Animal Center, Medical Collagen of Soochow University, Soochow University, Suzhou 215123, People's Republic of China
| | - Zhaozhao Ding
- National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People's Republic of China
| | - Xiaozhong Zhou
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou 215000, People's Republic of China
| | - Qiang Lu
- National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People's Republic of China
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
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Lin J, Mohamed I, Lin PH, Shirahama H, Milbreta U, Sieow JL, Peng Y, Bugiani M, Wong SC, Levinson H, Chew SY. Modulating Macrophage Phenotype by Sustained MicroRNA Delivery Improves Host-Implant Integration. Adv Healthc Mater 2020; 9:e1901257. [PMID: 31854130 DOI: 10.1002/adhm.201901257] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 12/03/2019] [Indexed: 01/08/2023]
Abstract
Biomedical implant failure due to the host's response remains a challenging problem. In particular, the formation of the fibrous capsule is a common barrier for the normal function of implants. Currently, there is mounting evidence indicating that the polarization state of macrophages plays an important role in effecting the foreign body reaction (FBR). This opens up a potential avenue for improving host-implant integration. Here, electrospun poly(caprolactone-co-ethyl ethylene phosphate) nanofiber scaffolds are utilized to deliver microRNAs (miRs) to induce macrophage polarization and modulate FBR. Specifically, C57BL/6 mice that are treated with M2-inducing miRs, Let-7c and miR-124, display relatively thinner fibrous capsule formation around the scaffolds at both Week 2 and 4, as compared to treatment with M1-inducing miR, Anti-Let-7c. Histological analysis shows that the density of blood vessels in the scaffolds are the highest in miR-124 treatment group, followed by Anti-Let-7c and Let-7c treatment groups. Based on immunohistochemical quantifications, these miR-encapsulated nanofiber scaffolds are useful for localized and sustained delivery of functional miRs and are able to modulate macrophage polarization during the first 2 weeks of implantation to result in significant alteration in host-implant integration at longer time points.
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Affiliation(s)
- Junquan Lin
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
| | - Ibrahim Mohamed
- Division of Plastic and Reconstructive SurgeryDepartments of Surgery and PathologyDuke University Medical Center Durham NC 27710 USA
| | - Po Hen Lin
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
| | - Hitomi Shirahama
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
| | - Ulla Milbreta
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
| | - Je Lin Sieow
- Singapore Immunology Network (SIgN)Biomedical Sciences InstituteASTAR Immunos Singapore 138648 Singapore
| | - Yanfen Peng
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
| | - Marianna Bugiani
- Departments of Child Neurology and PathologyNeuroscience Campus AmsterdamVU University Medical Center Amsterdam 1081 HV The Netherlands
| | - Siew Cheng Wong
- Singapore Immunology Network (SIgN)Biomedical Sciences InstituteASTAR Immunos Singapore 138648 Singapore
| | - Howard Levinson
- Division of Plastic and Reconstructive SurgeryDepartments of Surgery and PathologyDuke University Medical Center Durham NC 27710 USA
- Department of PathologyDuke University Medical Center Durham NC 27710 USA
| | - Sing Yian Chew
- School of Chemical and Biomedical EngineeringNanyang Technological University Singapore 637459 Singapore
- Lee Kong Chian School of MedicineNanyang Technological University Singapore 308232 Singapore
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Ghane N, Beigi MH, Labbaf S, Nasr-Esfahani MH, Kiani A. Design of hydrogel-based scaffolds for the treatment of spinal cord injuries. J Mater Chem B 2020; 8:10712-10738. [DOI: 10.1039/d0tb01842b] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hydrogel-based scaffold design approaches for the treatment of spinal cord injuries.
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Affiliation(s)
- Nazanin Ghane
- Department of Cellular Biotechnology Cell Science Research Center
- Royan Institute for Biotechnology
- ACECR
- Isfahan
- Iran
| | - Mohammad-Hossein Beigi
- Department of Cellular Biotechnology Cell Science Research Center
- Royan Institute for Biotechnology
- ACECR
- Isfahan
- Iran
| | - Sheyda Labbaf
- Biomaterials Research Group
- Department of Materials Engineering
- Isfahan University of Technology
- Isfahan
- Iran
| | | | - Amirkianoosh Kiani
- Silicon Hall: Micro/Nano Manufacturing Facility
- Faculty of Engineering and Applied Science
- Ontario Tech University
- Ontario
- Canada
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Wang L, Wu Y, Hu T, Ma PX, Guo B. Aligned conductive core-shell biomimetic scaffolds based on nanofiber yarns/hydrogel for enhanced 3D neurite outgrowth alignment and elongation. Acta Biomater 2019; 96:175-187. [PMID: 31260823 DOI: 10.1016/j.actbio.2019.06.035] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 06/03/2019] [Accepted: 06/20/2019] [Indexed: 01/09/2023]
Abstract
Aligned topographical cue has been demonstrated as a critical role in neuronal guidance, and it is highly beneficial to develop a scaffold with aligned structure for peripheral nerve tissue regeneration. Although considerable efforts have been devoted to guiding neurite alignment and extension, it remains a remarkable challenge for developing a biomimetic scaffold for enhancing 3D aligned neuronal outgrowth. Herein, we present a core-shell scaffold based on aligned conductive nanofiber yarns (NFYs) within the hydrogel to mimic the 3D hierarchically aligned structure of the native nerve tissue. The aligned NFYs assembled by a bundle of aligned nanofibers composed of polycaprolactone (PCL), silk fibroin (SF), and carbon nanotubes (CNTs) are prepared by a developed dry-wet electrospinning method, which has the ability to induce neurite alignment and elongation when PC12 cells and dorsal root ganglia (DRG) cells are cultured on their 3D peripheral surface. Particularly, such an aligned nanofibrous structure also induces aligned neurite extension and cell migration from DRG explants along the direction of nanofibers. 3D core-shell scaffolds are fabricated by encapsulating NFYs within the hydrogel shell after photocrosslinking, and these 3D aligned scaffolds are able to control cellular alignment and elongation of nerve cells in this 3D environment. Our results suggest that such 3D hierarchically aligned core-shell scaffold consists of NFYs that mimic the aligned nerve fiber structure to induce neurite alignment and extension and a hydrogel shell that mimics the epineurium layer to protect nerve cell organization within a 3D environment, which is largely promising for the design of biomimetic scaffolds in nerve tissue engineering. STATEMENT OF SIGNIFICANCE: Designing scaffolds with 3D aligned structure has been paid more attention for peripheral nerve tissue regeneration, because the aligned topographical cue is able to induce neurites alignment and extension. However, developing scaffolds mimicking the hierarchically aligned structure of native nerve tissue for directing 3D aligned neuronal outgrowth without external stimulation remains challenging. This work presented a simple and efficient strategy to prepare a 3D biomimetic core-shell scaffold based on electrospun aligned conductive nanofiber yarns within photocurable hydrogel shell to mimic the hierarchically aligned structure of native nerve tissue. These 3D aligned composite scaffolds performed the ability to direct 3D cellular alignment and elongation of nerve cells along with the nanofiber yarn direction, and the hydrogel shell mimicking the epineurium layer was able to protect nerve cells organization within the 3D environment, which indicated their great potential in peripheral nerve tissue engineering applications.
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Affiliation(s)
- Ling Wang
- Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Yaobin Wu
- Department of Anatomy, Guangdong Engineering Research Center for Translation of Medical 3D Printing Application, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, PR China.
| | - Tianli Hu
- Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Peter X Ma
- Department of Biomedical Engineering, and Department of Biologic and Materials Sciences, University of Michigan, 1011, North University Ave., Room 2209, Ann Arbor, MI 48109, USA; Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Baolin Guo
- Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, PR China; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an 710049, PR China.
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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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Purushothaman AE, Thakur K, Kandasubramanian B. Development of highly porous, Electrostatic force assisted nanofiber fabrication for biological applications. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1581197] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
| | - Kirti Thakur
- Department of Atomic and Molecular Physics, Manipal Academy of Higher Education (MAHE), Manipal, India
| | - Balasubramanian Kandasubramanian
- Department of Metallurgical and Materials Engineering, DIAT(DU), Ministry of Defence, Rapid Prototyping Lab, Girinagar, Pune, India
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8
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Bas O, Catelas I, De-Juan-Pardo EM, Hutmacher DW. The quest for mechanically and biologically functional soft biomaterials via soft network composites. Adv Drug Deliv Rev 2018; 132:214-234. [PMID: 30048654 DOI: 10.1016/j.addr.2018.07.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 07/18/2018] [Accepted: 07/20/2018] [Indexed: 12/15/2022]
Abstract
Developing multifunctional soft biomaterials capable of addressing all the requirements of the complex tissue regeneration process is a multifaceted problem. In order to tackle the current challenges, recent research efforts are increasingly being directed towards biomimetic design concepts that can be translated into soft biomaterials via advanced manufacturing technologies. Among those, soft network composites consisting of a continuous hydrogel matrix and a reinforcing fibrous network closely resemble native soft biological materials in terms of design and composition as well as physicochemical properties. This article reviews soft network composite systems with a particular emphasis on the design, biomaterial and fabrication aspects within the context of soft tissue engineering and drug delivery applications.
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Affiliation(s)
- Onur Bas
- ARC Industrial Transformation Training Centre in Additive Biomanufacturing, Queensland University of Technology (QUT), Kelvin Grove, Brisbane, QLD 4059, Australia; Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, QLD 4059, Australia; School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty (SEF), Queensland University of Technology (QUT), Brisbane, QLD 4001, Australia
| | - Isabelle Catelas
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty (SEF), Queensland University of Technology (QUT), Brisbane, QLD 4001, Australia; Department of Mechanical Engineering, University of Ottawa, Ottawa, ON K1N 6N5, Canada
| | - Elena M De-Juan-Pardo
- ARC Industrial Transformation Training Centre in Additive Biomanufacturing, Queensland University of Technology (QUT), Kelvin Grove, Brisbane, QLD 4059, Australia; School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty (SEF), Queensland University of Technology (QUT), Brisbane, QLD 4001, Australia
| | - Dietmar W Hutmacher
- ARC Industrial Transformation Training Centre in Additive Biomanufacturing, Queensland University of Technology (QUT), Kelvin Grove, Brisbane, QLD 4059, Australia; Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, QLD 4059, Australia; School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty (SEF), Queensland University of Technology (QUT), Brisbane, QLD 4001, Australia; Institute for Advanced Study, Technische Universität München, 85748 Garching, Germany.
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9
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Multi-length scale bioprinting towards simulating microenvironmental cues. Biodes Manuf 2018; 1:77-88. [PMID: 30546920 PMCID: PMC6267274 DOI: 10.1007/s42242-018-0014-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 05/02/2018] [Indexed: 02/08/2023]
Abstract
It is envisaged that the creation of cellular environments at multiple length scales, that recapitulate in vivo bioactive and structural roles, may hold the key to creating functional, complex tissues in the laboratory. This review considers recent advances in biofabrication and bioprinting techniques across different length scales. Particular focus is placed on 3D printing of hydrogels and fabrication of biomaterial fibres that could extend the feature resolution and material functionality of soft tissue constructs. The outlook from this review discusses how one might create and simulate microenvironmental cues in vitro. A fabrication platform that integrates the competencies of different biofabrication technologies is proposed. Such a multi-process, multiscale fabrication strategy may ultimately translate engineering capability into an accessible life sciences toolkit, fulfilling its potential to deliver in vitro disease models and engineered tissue implants.
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Wellman SM, Eles JR, Ludwig KA, Seymour JP, Michelson NJ, McFadden WE, Vazquez AL, Kozai TDY. A Materials Roadmap to Functional Neural Interface Design. ADVANCED FUNCTIONAL MATERIALS 2018; 28:1701269. [PMID: 29805350 PMCID: PMC5963731 DOI: 10.1002/adfm.201701269] [Citation(s) in RCA: 186] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Advancement in neurotechnologies for electrophysiology, neurochemical sensing, neuromodulation, and optogenetics are revolutionizing scientific understanding of the brain while enabling treatments, cures, and preventative measures for a variety of neurological disorders. The grand challenge in neural interface engineering is to seamlessly integrate the interface between neurobiology and engineered technology, to record from and modulate neurons over chronic timescales. However, the biological inflammatory response to implants, neural degeneration, and long-term material stability diminish the quality of interface overtime. Recent advances in functional materials have been aimed at engineering solutions for chronic neural interfaces. Yet, the development and deployment of neural interfaces designed from novel materials have introduced new challenges that have largely avoided being addressed. Many engineering efforts that solely focus on optimizing individual probe design parameters, such as softness or flexibility, downplay critical multi-dimensional interactions between different physical properties of the device that contribute to overall performance and biocompatibility. Moreover, the use of these new materials present substantial new difficulties that must be addressed before regulatory approval for use in human patients will be achievable. In this review, the interdependence of different electrode components are highlighted to demonstrate the current materials-based challenges facing the field of neural interface engineering.
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Affiliation(s)
- Steven M Wellman
- Department of Bioengineering, Center for the Basis of Neural Cognition, McGowan Institute of Regenerative Medicine, NeuroTech Center, University of Pittsburgh Brain Institute, Center for Neuroscience at the University of Pittsburgh, University of Pittsburgh, 208 Center for Biotechnology, 300 Technology Dr., Pittsburgh, PA 15219, United States
| | - James R Eles
- Department of Bioengineering, Center for the Basis of Neural Cognition, McGowan Institute of Regenerative Medicine, NeuroTech Center, University of Pittsburgh Brain Institute, Center for Neuroscience at the University of Pittsburgh, University of Pittsburgh, 208 Center for Biotechnology, 300 Technology Dr., Pittsburgh, PA 15219, United States
| | - Kip A Ludwig
- Department of Neurologic Surgery, 200 First St. SW, Rochester, MN 55905
| | - John P Seymour
- Electrical & Computer Engineering, 1301 Beal Ave., 2227 EECS, Ann Arbor, MI 48109
| | - Nicholas J Michelson
- Department of Bioengineering, Center for the Basis of Neural Cognition, McGowan Institute of Regenerative Medicine, NeuroTech Center, University of Pittsburgh Brain Institute, Center for Neuroscience at the University of Pittsburgh, University of Pittsburgh, 208 Center for Biotechnology, 300 Technology Dr., Pittsburgh, PA 15219, United States
| | - William E McFadden
- Department of Bioengineering, Center for the Basis of Neural Cognition, McGowan Institute of Regenerative Medicine, NeuroTech Center, University of Pittsburgh Brain Institute, Center for Neuroscience at the University of Pittsburgh, University of Pittsburgh, 208 Center for Biotechnology, 300 Technology Dr., Pittsburgh, PA 15219, United States
| | - Alberto L Vazquez
- Department of Bioengineering, Center for the Basis of Neural Cognition, McGowan Institute of Regenerative Medicine, NeuroTech Center, University of Pittsburgh Brain Institute, Center for Neuroscience at the University of Pittsburgh, University of Pittsburgh, 208 Center for Biotechnology, 300 Technology Dr., Pittsburgh, PA 15219, United States
| | - Takashi D Y Kozai
- Department of Bioengineering, Center for the Basis of Neural Cognition, McGowan Institute of Regenerative Medicine, NeuroTech Center, University of Pittsburgh Brain Institute, Center for Neuroscience at the University of Pittsburgh, University of Pittsburgh, 208 Center for Biotechnology, 300 Technology Dr., Pittsburgh, PA 15219, United States
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Tasnim N, Kumar A, Joddar B. Attenuation of the in vitro neurotoxicity of 316L SS by graphene oxide surface coating. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 73:788-797. [PMID: 28183673 PMCID: PMC5312756 DOI: 10.1016/j.msec.2016.12.123] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/07/2016] [Accepted: 12/22/2016] [Indexed: 12/17/2022]
Abstract
A persistent theme in biomaterials research comprises of surface engineering and modification of bare metallic substrates for improved cellular response and biocompatibility. Graphene Oxide (GO), a derivative of graphene, has outstanding chemical and mechanical properties; its large surface to volume ratio, ease of surface modification and processing make GO an attractive coating material. GO-coatings have been extensively studied as biosensors. Further owing to its surface nano-architecture, GO-coated surfaces promote cell adhesion and growth, making it suitable for tissue engineering applications. The need to improve the long-term durability and therapeutic effectiveness of commercially available bare 316L stainless steel (SS) surfaces led us to adopt a polymer-free approach which is cost-effective and scalable. GO was immobilized on to 316L SS utilizing amide linkage, to generate a strongly adherent uniform coating with surface roughness. GO-coated 316L SS surfaces showed increased hydrophilicity and biocompatibility with SHSY-5Y neuronal cells, which proliferated well and showed decreased reactive oxygen species (ROS) expression. In contrast, cells did not adhere to bare uncoated 316L SS meshes nor maintain viability when cultured in the vicinity of bare meshes. Therefore the combination of the improved surface properties and biocompatibility implies that GO-coating can be utilized to overcome pertinent limitations of bare metallic 316L SS implant surfaces, especially SS neural electrodes. Also, the procedure for making GO-based protective coatings can be applied to numerous other implants where the development of such protective films is necessary.
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Affiliation(s)
- Nishat Tasnim
- Department of Metallurgical, Materials Science and Biomedical Engineering, The University of Texas at El Paso, 500 W University Avenue, El Paso, TX 79968, USA
| | - Alok Kumar
- Department of Metallurgical, Materials Science and Biomedical Engineering, The University of Texas at El Paso, 500 W University Avenue, El Paso, TX 79968, USA
| | - Binata Joddar
- Department of Metallurgical, Materials Science and Biomedical Engineering, The University of Texas at El Paso, 500 W University Avenue, El Paso, TX 79968, USA.
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12
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Czeisler C, Short A, Nelson T, Gygli P, Ortiz C, Catacutan FP, Stocker B, Cronin J, Lannutti J, Winter J, Otero JJ. Surface topography during neural stem cell differentiation regulates cell migration and cell morphology. J Comp Neurol 2016; 524:3485-3502. [PMID: 27418162 DOI: 10.1002/cne.24078] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 07/08/2016] [Accepted: 07/08/2016] [Indexed: 12/13/2022]
Abstract
We sought to determine the contribution of scaffold topography to the migration and morphology of neural stem cells by mimicking anatomical features of scaffolds found in vivo. We mimicked two types of central nervous system scaffolds encountered by neural stem cells during development in vitro by constructing different diameter electrospun polycaprolactone (PCL) fiber mats, a substrate that we have shown to be topographically similar to brain scaffolds. We compared the effects of large fibers (made to mimic blood vessel topography) with those of small-diameter fibers (made to mimic radial glial process topography) on the migration and differentiation of neural stem cells. Neural stem cells showed differential migratory and morphological reactions with laminin in different topographical contexts. We demonstrate, for the first time, that neural stem cell biological responses to laminin are dependent on topographical context. Large-fiber topography without laminin prevented cell migration, which was partially reversed by treatment with rock inhibitor. Cell morphology complexity assayed by fractal dimension was inhibited in nocodazole- and cytochalasin-D-treated neural precursor cells in large-fiber topography, but was not changed in small-fiber topography with these inhibitors. These data indicate that cell morphology has different requirements on cytoskeletal proteins dependent on the topographical environment encountered by the cell. We propose that the physical structure of distinct scaffolds induces unique signaling cascades that regulate migration and morphology in embryonic neural precursor cells. J. Comp. Neurol. 524:3485-3502, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Catherine Czeisler
- Department of Pathology, Division of Neuropathology, The Ohio State University College of Medicine, Columbus, Ohio, 43210
| | - Aaron Short
- Department of Biomedical Engineering, The Ohio State University College of Engineering, Columbus, Ohio, 43210
| | - Tyler Nelson
- Department of Biomedical Engineering, The Ohio State University College of Engineering, Columbus, Ohio, 43210
| | - Patrick Gygli
- Department of Pathology, Division of Neuropathology, The Ohio State University College of Medicine, Columbus, Ohio, 43210
| | - Cristina Ortiz
- Department of Pathology, Division of Neuropathology, The Ohio State University College of Medicine, Columbus, Ohio, 43210
| | - Fay Patsy Catacutan
- Department of Pathology, Division of Neuropathology, The Ohio State University College of Medicine, Columbus, Ohio, 43210
| | - Ben Stocker
- Department of Pathology, Division of Neuropathology, The Ohio State University College of Medicine, Columbus, Ohio, 43210
| | - James Cronin
- Department of Pathology, Division of Neuropathology, The Ohio State University College of Medicine, Columbus, Ohio, 43210
| | - John Lannutti
- Department of Materials Science and Engineering, the Ohio State University College of Engineering, Columbus, Ohio, 43210
| | - Jessica Winter
- Department of Biomedical Engineering, The Ohio State University College of Engineering, Columbus, Ohio, 43210. .,William G. Lowrie Department of Chemical Engineering, The Ohio State University College of Engineering, Columbus, Ohio, 43210.
| | - José Javier Otero
- Department of Pathology, Division of Neuropathology, The Ohio State University College of Medicine, Columbus, Ohio, 43210.
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13
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Li M, Zhou HH, Li T, Li CY, Xia ZY, Duan YY. Polyurethane/poly(vinyl alcohol) hydrogel coating improves the cytocompatibility of neural electrodes. Neural Regen Res 2016; 10:2048-53. [PMID: 26889197 PMCID: PMC4730833 DOI: 10.4103/1673-5374.172325] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Neural electrodes, the core component of neural prostheses, are usually encapsulated in polydimethylsiloxane (PDMS). However, PDMS can generate a tissue response after implantation. Based on the physicochemical properties and excellent biocompatibility of polyurethane (PU) and poly(vinyl alcohol) (PVA) when used as coating materials, we synthesized PU/PVA hydrogel coatings and coated the surface of PDMS using plasma treatment, and the cytocompatibility to rat pheochromocytoma (PC12) cells was assessed. Protein adsorption tests indicated that the amount of protein adsorption onto the PDMS substrate was reduced by 92% after coating with the hydrogel. Moreover, the PC12 cells on the PU/PVA-coated PDMS showed higher cell density and longer and more numerous neurites than those on the uncoated PDMS. These results indicate that the PU/PVA hydrogel is cytocompatible and a promising coating material for neural electrodes to improve their biocompatibility.
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Affiliation(s)
- Mei Li
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Hai-Han Zhou
- Institute of Molecular Science, Shanxi University, Taiyuan, Shanxi Province, China
| | - Tao Li
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Cheng-Yan Li
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Zhong-Yuan Xia
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Yanwen Y Duan
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei Province, China
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14
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Guarino V, Cirillo V, Ambrosio L. Bicomponent electrospun scaffolds to design extracellular matrix tissue analogs. Expert Rev Med Devices 2015; 13:83-102. [PMID: 26619260 DOI: 10.1586/17434440.2016.1126505] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
In the last decade, bicomponent fibers have been proposed to fabricate bio-inspired systems for tissue repair, regenerative medicine, medical healthcare and clinical applications. In comparison with monocomponent fibers, key advantage concerns their ability of self-adapting to the physiological conditions through an extended pattern of signals--morphological, chemical and physical ones--confined at the single fiber level. Hydrophobic/hydrophilic phases may be variously organized by tuneable processing modes (i.e., blending, core/shell, interweaving) thus offering different benefits in terms of biological activity, fluid sorption and molecular transport properties (first generation). The possibility to efficiently graft cell-adhesive proteins and peptide sequences onto the fiber surface mediated by spacers or impregnating hydrogels allows to trigger cell late activities by a controlled and sustained release in vitro of specific biomolecules (i.e., morphogens, growth factors). Here, we introduce an overview of current approaches based on bicomponent fiber use as extra cellular matrix analogs with cell-instructive functions and hierarchal organization of living tissues.
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Affiliation(s)
- Vincenzo Guarino
- a Institute for Polymers, Composites and Biomaterials, Department of Chemical Sciences & Materials Technology , National Research Council of Italy , 80125 Naples , Italy
| | - Valentina Cirillo
- a Institute for Polymers, Composites and Biomaterials, Department of Chemical Sciences & Materials Technology , National Research Council of Italy , 80125 Naples , Italy
| | - Luigi Ambrosio
- a Institute for Polymers, Composites and Biomaterials, Department of Chemical Sciences & Materials Technology , National Research Council of Italy , 80125 Naples , Italy
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15
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Jaquins-Gerstl A, Michael AC. A review of the effects of FSCV and microdialysis measurements on dopamine release in the surrounding tissue. Analyst 2015; 140:3696-708. [PMID: 25876757 PMCID: PMC4437820 DOI: 10.1039/c4an02065k] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Microdialysis is commonly used in neuroscience to obtain information about the concentration of substances, including neurotransmitters such as dopamine (DA), in the extracellular space (ECS) of the brain. Measuring DA concentrations in the ECS with in vivo microdialysis and/or voltammetry is a mainstay of investigations into both normal and pathological function of central DA systems. Although both techniques are instrumental in understanding brain chemistry each has its shortcomings. The objective of this review is to characterize some of the tissue and DA differences associated with each technique in vivo. Much of this work will focus on immunohistochemical and microelectrode measurements of DA in the tissue next to the microdialysis probe and mitigating the response to the damage caused by probe implantation.
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16
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Xu S, Deng L, Zhang J, Yin L, Dong A. Composites of electrospun-fibers and hydrogels: A potential solution to current challenges in biological and biomedical field. J Biomed Mater Res B Appl Biomater 2015; 104:640-56. [DOI: 10.1002/jbm.b.33420] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 03/02/2015] [Accepted: 03/15/2015] [Indexed: 01/19/2023]
Affiliation(s)
- Shuxin Xu
- Department of Polymer Science and Technology and Key Laboratory of Systems Bioengineering of the Ministry of Education; School of Chemical Engineering and Technology, Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
| | - Liandong Deng
- Department of Polymer Science and Technology and Key Laboratory of Systems Bioengineering of the Ministry of Education; School of Chemical Engineering and Technology, Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
| | - Jianhua Zhang
- Department of Polymer Science and Technology and Key Laboratory of Systems Bioengineering of the Ministry of Education; School of Chemical Engineering and Technology, Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
| | - Li Yin
- Department of Polymer Science and Technology and Key Laboratory of Systems Bioengineering of the Ministry of Education; School of Chemical Engineering and Technology, Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
| | - Anjie Dong
- Department of Polymer Science and Technology and Key Laboratory of Systems Bioengineering of the Ministry of Education; School of Chemical Engineering and Technology, Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
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17
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Lee CD, Hara SA, Yu L, Kuo JTW, Kim BJ, Hoang T, Pikov V, Meng E. Matrigel coatings for Parylene sheath neural probes. J Biomed Mater Res B Appl Biomater 2015; 104:357-68. [PMID: 25809504 DOI: 10.1002/jbm.b.33390] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 12/26/2014] [Accepted: 01/29/2015] [Indexed: 01/15/2023]
Abstract
The biologically derived hydrogel Matrigel (MG) was used to coat a Parylene-based sheath intracortical electrode to act as a mechanical and biological buffer as well as a matrix for delivering bioactive molecules to modulate the cellular response and improve recording quality. MG was loaded with dexamethasone to reduce the immune response together with nerve growth factor (NGF) and brain-derived neurotrophic factor (BDNF) to maintain neuronal density and encourage neuronal ingrowth toward electrodes within the sheath. Coating the Parylene sheath electrode with the loaded MG significantly improved the signal-to-noise ratio for neural events recorded from the motor cortex in rat for more than 3 months. Electron microscopy showed even coverage of both the Parylene substrate and the platinum recording electrodes. Electrochemical impedance spectroscopy (EIS) of coated electrodes in 1× phosphate-buffered saline demonstrated low impedance required for recording neural signals. This result was confirmed by in vivo EIS data, showing significantly decreased impedance during the first week of recording. Dexamethasone, NGF, and BDNF loaded into MG were released within 1 day in 1× phosphate-buffered saline. Although previous studies showed that MG loaded with either the immunosuppressant or the neurotrophic factor cocktail provided modest improvement in recording quality in a 1-month in vivo study, the combination of these bioactive molecules did not improve the signal quality over coating probes with only MG in a 3-month in vivo study. The MG coating may further improve recording quality by optimizing the in vivo release profile for the bioactive molecules.
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Affiliation(s)
- Curtis D Lee
- Department of Biomedical Engineering, University of Southern California, Los Angeles, California, 90089-1111
| | - Seth A Hara
- Department of Biomedical Engineering, University of Southern California, Los Angeles, California, 90089-1111
| | - Lawrence Yu
- Department of Biomedical Engineering, University of Southern California, Los Angeles, California, 90089-1111
| | - Jonathan T W Kuo
- Department of Biomedical Engineering, University of Southern California, Los Angeles, California, 90089-1111
| | - Brian J Kim
- Department of Biomedical Engineering, University of Southern California, Los Angeles, California, 90089-1111
| | - Tuan Hoang
- Department of Biomedical Engineering, University of Southern California, Los Angeles, California, 90089-1111
| | - Victor Pikov
- Neural Engineering Program, Huntington Medical Research Institutes, Pasadena, California, 91105-3104
| | - Ellis Meng
- Department of Biomedical Engineering, University of Southern California, Los Angeles, California, 90089-1111.,Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, California, 90089-2560
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18
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Tseng H, Puperi DS, Kim EJ, Ayoub S, Shah JV, Cuchiara ML, West JL, Grande-Allen KJ. Anisotropic poly(ethylene glycol)/polycaprolactone hydrogel-fiber composites for heart valve tissue engineering. Tissue Eng Part A 2014; 20:2634-45. [PMID: 24712446 PMCID: PMC4195534 DOI: 10.1089/ten.tea.2013.0397] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Accepted: 03/19/2014] [Indexed: 11/12/2022] Open
Abstract
The recapitulation of the material properties and structure of the native aortic valve leaflet, specifically its anisotropy and laminate structure, is a major design goal for scaffolds for heart valve tissue engineering. Poly(ethylene glycol) (PEG) hydrogels are attractive scaffolds for this purpose as they are biocompatible, can be modified for their mechanical and biofunctional properties, and can be laminated. This study investigated augmenting PEG hydrogels with polycaprolactone (PCL) as an analog to the fibrosa to improve strength and introduce anisotropic mechanical behavior. However, due to its hydrophobicity, PCL must be modified prior to embedding within PEG hydrogels. In this study, PCL was electrospun (ePCL) and modified in three different ways, by protein adsorption (pPCL), alkali digestion (hPCL), and acrylation (aPCL). Modified PCL of all types maintained the anisotropic elastic moduli and yield strain of unmodified anisotropic ePCL. Composites of PEG and PCL (PPCs) maintained anisotropic elastic moduli, but aPCL and pPCL had isotropic yield strains. Overall, PPCs of all modifications had elastic moduli of 3.79±0.90 MPa and 0.46±0.21 MPa in the parallel and perpendicular directions, respectively. Valvular interstitial cells seeded atop anisotropic aPCL displayed an actin distribution aligned in the direction of the underlying fibers. The resulting scaffold combines the biocompatibility and tunable fabrication of PEG with the strength and anisotropy of ePCL to form a foundation for future engineered valve scaffolds.
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Affiliation(s)
- Hubert Tseng
- Department of Bioengineering, Rice University, Houston, Texas
| | | | - Eric J. Kim
- Department of Bioengineering, Rice University, Houston, Texas
| | - Salma Ayoub
- Department of Bioengineering, Rice University, Houston, Texas
| | - Jay V. Shah
- Department of Bioengineering, Rice University, Houston, Texas
| | - Maude L. Cuchiara
- Department of Biomedical Engineering, Duke University, Durham, North Carolina
| | - Jennifer L. West
- Department of Biomedical Engineering, Duke University, Durham, North Carolina
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19
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Han N, Johnson JK, Bradley PA, Parikh KS, Lannutti JJ, Winter JO. Cell attachment to hydrogel-electrospun fiber mat composite materials. J Funct Biomater 2012; 3:497-513. [PMID: 24955629 PMCID: PMC4031005 DOI: 10.3390/jfb3030497] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Revised: 07/19/2012] [Accepted: 07/20/2012] [Indexed: 02/06/2023] Open
Abstract
Hydrogels, electrospun fiber mats (EFMs), and their composites have been extensively studied for tissue engineering because of their physical and chemical similarity to native biological systems. However, while chemically similar, hydrogels and electrospun fiber mats display very different topographical features. Here, we examine the influence of surface topography and composition of hydrogels, EFMs, and hydrogel-EFM composites on cell behavior. Materials studied were composed of synthetic poly(ethylene glycol) (PEG) and poly(ethylene glycol)-poly(ε-caprolactone) (PEGPCL) hydrogels and electrospun poly(caprolactone) (PCL) and core/shell PCL/PEGPCL constituent materials. The number of adherent cells and cell circularity were most strongly influenced by the fibrous nature of materials (e.g., topography), whereas cell spreading was more strongly influenced by material composition (e.g., chemistry). These results suggest that cell attachment and proliferation to hydrogel-EFM composites can be tuned by varying these properties to provide important insights for the future design of such composite materials.
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Affiliation(s)
- Ning Han
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Jed K Johnson
- Department of Materials and Science Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Patrick A Bradley
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Kunal S Parikh
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - John J Lannutti
- Department of Materials and Science Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Jessica O Winter
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA.
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