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Guo R, Ma X, Liao M, Liu Y, Hu Y, Qian X, Tang Q, Guo X, Chai R, Gao X, Tang M. Development and Application of Cochlear Implant-Based Electric-Acoustic Stimulation of Spiral Ganglion Neurons. ACS Biomater Sci Eng 2019; 5:6735-6741. [PMID: 33423491 DOI: 10.1021/acsbiomaterials.9b01265] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cochlear implants are currently the most effective treatment for profound sensorineural hearing loss. However, their therapeutic effect is limited by the survival and proper physiological function of spiral ganglion neurons (SGNs), which are targeted by the cochlear implant. It is therefore critical to explore the mechanism behind the effect of electric-acoustic stimulation (EAS) on the targeted SGNs. In this work, a biocompatible cochlear implant/graphene EAS system was created by combining a cochlear implant to provide the electrically transformed sound stimulation with graphene as the conductive neural interface. SGNs were cultured on the graphene and exposed to EAS from the cochlear implant. Neurite extension of SGNs was accelerated with long-term stimulation, which might contribute to the development of growth cones. Our system allows us to study the effects of cochlear implants on SGNs in a low-cost and time-saving way, and this might provide profound insights into the use of cochlear implants and thus be of benefit to the populations suffering from sensorineural hearing loss.
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Affiliation(s)
- Rongrong Guo
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing 210096, China.,Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China.,Joint Research Institute of Southeast University and Monash University, Suzhou 215123, China
| | - Xiaofeng Ma
- Department of Otorhinolaryngology-Head and Neck Surgery, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, Jiangsu 210008, China.,Department of Otorhinolaryngology-Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, Jiangsu 210008, China.,Research Institution of Otorhinolaryngology, Nanjing, Jiangsu 210008, P. R. China
| | - Menghui Liao
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing 210096, China.,Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China.,Joint Research Institute of Southeast University and Monash University, Suzhou 215123, China
| | - Yun Liu
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing 210096, China.,Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China.,Joint Research Institute of Southeast University and Monash University, Suzhou 215123, China
| | - Yangnan Hu
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing 210096, China.,Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China.,Joint Research Institute of Southeast University and Monash University, Suzhou 215123, China
| | - Xiaoyun Qian
- Department of Otorhinolaryngology-Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, Jiangsu 210008, China.,Research Institution of Otorhinolaryngology, Nanjing, Jiangsu 210008, P. R. China
| | - Qilin Tang
- The First Clinical Medical School, Anhui Medical University, 81 Meishan Road, Hefei 230032, China
| | - Xing Guo
- Department of Neurobiology, Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, 211166 Jiangsu, China
| | - Renjie Chai
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing 210096, China.,Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China.,Joint Research Institute of Southeast University and Monash University, Suzhou 215123, China
| | - Xia Gao
- Department of Otorhinolaryngology-Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, Jiangsu 210008, China.,Research Institution of Otorhinolaryngology, Nanjing, Jiangsu 210008, P. R. China
| | - Mingliang Tang
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing 210096, China.,Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China.,Joint Research Institute of Southeast University and Monash University, Suzhou 215123, China
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53
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Spencer AR, Sani ES, Soucy JR, Corbet CC, Primbetova A, Koppes RA, Annabi N. Bioprinting of a Cell-Laden Conductive Hydrogel Composite. ACS APPLIED MATERIALS & INTERFACES 2019; 11:30518-30533. [PMID: 31373791 PMCID: PMC11017381 DOI: 10.1021/acsami.9b07353] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Bioprinting has gained significant attention for creating biomimetic tissue constructs with potential to be used in biomedical applications such as drug screening or regenerative medicine. Ideally, biomaterials used for three-dimensional (3D) bioprinting should match the mechanical, hydrostatic, bioelectric, and physicochemical properties of the native tissues. However, many materials with these tissue-like properties are not compatible with printing techniques without modifying their compositions. In addition, integration of cell-laden biomaterials with bioprinting methodologies that preserve their physicochemical properties remains a challenge. In this work, a biocompatible conductive hydrogel composed of gelatin methacryloyl (GelMA) and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) was synthesized and bioprinted to form complex, 3D cell-laden structures. The biofabricated conductive hydrogels were formed by an initial cross-linking step of the PEDOT:PSS with bivalent calcium ions and a secondary photopolymerization step with visible light to cross-link the GelMA component. These modifications enabled tuning the mechanical properties of the hydrogels, with Young's moduli ranging from ∼40-150 kPa, as well as tunable conductivity by varying the concentration of PEDOT:PSS. In addition, the hydrogels degraded in vivo with no substantial inflammatory responses as demonstrated by haematoxylin and eosin (H&E) and immunofluorescent staining of subcutaneously implanted samples in Wistar rats. The parameters for forming a slurry of microgel particles to support 3D bioprinting of the engineered cell-laden hydrogel were optimized to form constructs with improved resolution. High cytocompatibility and cell spreading were demonstrated in both wet-spinning and 3D bioprinting of cell-laden hydrogels with the new conductive hydrogel-based bioink and printing methodology. The synergy of an advanced fabrication method and conductive hydrogel presented here is promising for engineering complex conductive and cell-laden structures.
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Affiliation(s)
- Andrew R. Spencer
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Ehsan Shirzaei Sani
- Chemical and Biomolecular Engineering Department, University of California–Los Angeles, Los Angeles, California 90095, United States
| | - Jonathan R. Soucy
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Carolyn C. Corbet
- Department of Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Asel Primbetova
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
- School of Biomedical Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z2, Canada
| | - Ryan A. Koppes
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Nasim Annabi
- Chemical and Biomolecular Engineering Department, University of California–Los Angeles, Los Angeles, California 90095, United States
- Biomaterials Innovation Research Center, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
- Center for Minimally Invasive Therapeutics (C-MIT), California NanoSystems Institute (CNSI), University of California–Los Angeles, Los Angeles, California 90095, United States
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54
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Piantanida E, Alonci G, Bertucci A, De Cola L. Design of Nanocomposite Injectable Hydrogels for Minimally Invasive Surgery. Acc Chem Res 2019; 52:2101-2112. [PMID: 31291090 DOI: 10.1021/acs.accounts.9b00114] [Citation(s) in RCA: 117] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Biocompatible hydrogels are materials that hold great promise in medicine and biology since the porous structure, the ability to entrap a large amount of water, and the tunability of their mechanical and tissue adhesive properties make them suitable for several applications, including wound healing, drug and cell delivery, cancer treatment, bioelectronics, and tissue regeneration. Among the possible developed systems, injectable hydrogels, owing to their properties, are optimal candidates for in vivo minimally invasive procedures. To be injectable, a hydrogel must be liquid before and during the injection, but it must quickly jellify after injection to form a soft, self-standing, solid material. The possibility to work with a liquid precursor encoding the functions that will be available after gelation allows the development of biocompatible materials that can be employed in surgery and, in particular, in noninvasive procedures. The underlying idea is to reach the target tissue by using just a needle, or by exploiting the natural body orifices, reducing surgery procedure time, induced pain, and risk of infections. Hydrogels with different properties can be obtained by changing the type of cross-linking, the cross-linking density or the molecular weight of the polymer, or by introducing pending functional groups. The introduction of a nanofiller in the hydrogel network allows for expanding the suite of the structural and functional properties and for better mimicking native tissues. In this Account, we discuss how to provide a hydrogel network with designed properties by playing with both the polymeric chains and the fillers. We present selected examples from the literature that show how to introduce stiffness, stretchability, adhesiveness, self-healing, anisotropy, antimicrobial activity, biodegradability, and conductivity in injectable hydrogels. We further describe how the chemical composition, the mechanical properties, and the microarchitecture of the hydrogel influence cell adhesion, proliferation, and differentiation. Examples of injectable hydrogels for innovative minimally invasive procedures are then discussed in detail; in particular, we showcase the use of hydrogels for tumor resection and as vascular chemoembolization agents. We further discuss how one can improve the rheological properties of injectable hydrogels to exploit them in osteochondral tissue engineering. The effect of the introduction of a conductive filler is then presented in relation to the development of electroactive scaffolds for cardiac-tissue engineering and neural and nerve repair. We believe that the rational design of biocompatible, injectable hybrid hydrogels with tunable properties will likely play a crucial role in reducing the invasiveness and improving the outcome of several clinical and surgical setups.
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Affiliation(s)
- Etienne Piantanida
- Institut de Science et d’Ingénierie Supramoléculaires, CNRS, UMR 7006, Université de Strasbourg, 8 rue Gaspard Monge, 67000 Strasbourg, France
| | - Giuseppe Alonci
- Institut de Science et d’Ingénierie Supramoléculaires, CNRS, UMR 7006, Université de Strasbourg, 8 rue Gaspard Monge, 67000 Strasbourg, France
| | - Alessandro Bertucci
- Department of Chemical Sciences and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, Rome 00133, Italy
| | - Luisa De Cola
- Institut de Science et d’Ingénierie Supramoléculaires, CNRS, UMR 7006, Université de Strasbourg, 8 rue Gaspard Monge, 67000 Strasbourg, France
- Institute of Nanotecnology and Karlsruhe Nano and Micro Facility, Karlsruhe Institute of Technology (KIT), Herman-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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55
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Carvalho CR, Silva-Correia J, Oliveira JM, Reis RL. Nanotechnology in peripheral nerve repair and reconstruction. Adv Drug Deliv Rev 2019; 148:308-343. [PMID: 30639255 DOI: 10.1016/j.addr.2019.01.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 09/20/2018] [Accepted: 01/05/2019] [Indexed: 02/07/2023]
Affiliation(s)
- Cristiana R Carvalho
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal; The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, AvePark, 4805-017 Barco, Guimarães, Portugal
| | - Joana Silva-Correia
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Joaquim M Oliveira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal; The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, AvePark, 4805-017 Barco, Guimarães, Portugal
| | - Rui L Reis
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal; The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, AvePark, 4805-017 Barco, Guimarães, Portugal.
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56
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Liaw K, Zhang Z, Kannan S. Neuronanotechnology for brain regeneration. Adv Drug Deliv Rev 2019; 148:3-18. [PMID: 31668648 DOI: 10.1016/j.addr.2019.04.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 02/16/2019] [Accepted: 04/15/2019] [Indexed: 12/16/2022]
Abstract
Identifying and harnessing regenerative pathways while suppressing the growth-inhibiting processes of the biological response to injury is the central goal of stimulating neurogenesis after central nervous system (CNS) injury. However, due to the complexity of the mature CNS involving a plethora of cellular pathways and extracellular cues, as well as difficulties in accessibility without highly invasive procedures, clinical successes of regenerative medicine for CNS injuries have been extremely limited. Current interventions primarily focus on stabilization and mitigation of further neuronal death rather than direct stimulation of neurogenesis. In the past few decades, nanotechnology has offered substantial innovations to the field of regenerative medicine. Their nanoscale features allow for the fine tuning of biological interactions for enhancing drug delivery and stimulating cellular processes. This review gives an overview of nanotechnology applications in CNS regeneration organized according to cellular and extracellular targets and discuss future directions for the field.
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57
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Song YH, Agrawal NK, Griffin JM, Schmidt CE. Recent advances in nanotherapeutic strategies for spinal cord injury repair. Adv Drug Deliv Rev 2019; 148:38-59. [PMID: 30582938 PMCID: PMC6959132 DOI: 10.1016/j.addr.2018.12.011] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 11/12/2018] [Accepted: 12/17/2018] [Indexed: 12/11/2022]
Abstract
Spinal cord injury (SCI) is a devastating and complicated condition with no cure available. The initial mechanical trauma is followed by a secondary injury characterized by inflammatory cell infiltration and inhibitory glial scar formation. Due to the limitations posed by the blood-spinal cord barrier, systemic delivery of therapeutics is challenging. Recent development of various nanoscale strategies provides exciting and promising new means of treating SCI by crossing the blood-spinal cord barrier and delivering therapeutics. As such, we discuss different nanomaterial fabrication methods and provide an overview of recent studies where nanomaterials were developed to modulate inflammatory signals, target inhibitory factors in the lesion, and promote axonal regeneration after SCI. We also review emerging areas of research such as optogenetics, immunotherapy and CRISPR-mediated genome editing where nanomaterials can provide synergistic effects in developing novel SCI therapy regimens, as well as current efforts and barriers to clinical translation of nanomaterials.
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Affiliation(s)
- Young Hye Song
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Nikunj K Agrawal
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Jonathan M Griffin
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Christine E Schmidt
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA.
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58
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Grossemy S, Chan PPY, Doran PM. Electrical stimulation of cell growth and neurogenesis using conductive and nonconductive microfibrous scaffolds. Integr Biol (Camb) 2019; 11:264-279. [DOI: 10.1093/intbio/zyz022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 05/01/2019] [Accepted: 06/12/2019] [Indexed: 11/13/2022]
Abstract
Abstract
The effect of exogenous electrical stimulation on cell viability, attachment, growth, and neurogenesis was examined using PC12 cells in microfibrous viscose-rayon scaffolds immersed in culture medium. The scaffolds were applied either in their nonconductive state or after coating the fibres with 200 nm of gold to give a scaffold sheet resistivity of (13 ± 1.3) Ω square−1. The cells were treated for 12 days using direct current electrical stimulation of 2 h per day. No cytotoxic effects were observed when up to 500 mV (8.3 mV mm−1) was applied to the scaffolds without gold, or when up to 100 mV (1.7 mV mm−1) was applied to the scaffolds with gold. Compared with unstimulated cells, whereas electrical stimulation significantly enhanced cell growth and attachment in the nonconductive scaffolds without gold, similar effects were not found for the conductive scaffolds with gold. Neural differentiation in the presence of nerve growth factor was improved by electrical stimulation in both scaffolds; however, neurite development and the expression of key differentiation markers were greater in the nonconductive scaffolds without gold than in the scaffolds with gold. Application of the same current to scaffolds with and without gold led to much higher levels of neurogenesis in the scaffolds without gold. This work demonstrates that substantial benefits in terms of cell growth and neural differentiation can be obtained using electric fields exerted across nonconductive microfibrous scaffolds, and that this approach to electrical stimulation can be more effective than when the stimulus is applied to cells on conductive scaffolds.
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Affiliation(s)
- Simon Grossemy
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, PO Box 218, Hawthorn, Melbourne, Australia
| | - Peggy P Y Chan
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, PO Box 218, Hawthorn, Melbourne, Australia
| | - Pauline M Doran
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, PO Box 218, Hawthorn, Melbourne, Australia
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Bertucci C, Koppes R, Dumont C, Koppes A. Neural responses to electrical stimulation in 2D and 3D in vitro environments. Brain Res Bull 2019; 152:265-284. [PMID: 31323281 DOI: 10.1016/j.brainresbull.2019.07.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 06/29/2019] [Accepted: 07/12/2019] [Indexed: 12/17/2022]
Abstract
Electrical stimulation (ES) to manipulate the central (CNS) and peripheral nervous system (PNS) has been explored for decades, recently gaining momentum as bioelectronic medicine advances. The application of ES in vitro to modulate a variety of cellular functions, including regenerative potential, migration, and stem cell fate, are being explored to aid neural degeneration, dysfunction, and injury. This review describes the materials and approaches for the application of ES to the PNS and CNS microenvironments, towards an improved understanding of how ES can be harnessed for beneficial clinical applications. Emphasized are some recent advances in ES, including conductive polymers, methods of charge transfer, impact on neural cells, and a brief overview of alternative methodologies for cellular targeting including magneto, ultrasonic, and optogenetic stimulation. This review will examine how heterogenous cell populations, including neurons, glia, and neural stem cells respond to a wide range of conductive 2D and 3D substrates, stimulation regimes, known mechanisms of response, and how cellular sources impact the response to ES.
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Affiliation(s)
- Christopher Bertucci
- Northeastern University, Department of Chemical Engineering, Boston, MA, 02115, United States.
| | - Ryan Koppes
- Northeastern University, Department of Chemical Engineering, Boston, MA, 02115, United States.
| | - Courtney Dumont
- Department of Biomedical Engineering, University of Miami, Coral Gables, FL, 33146, United States.
| | - Abigail Koppes
- Northeastern University, Department of Chemical Engineering, Boston, MA, 02115, United States; Department of Biology, Boston, 02115, MA, United States.
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60
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Hyung S, Lee S, Kim YJ, Bang S, Tahk D, Park J, Suh JF, Jeon NL. Optogenetic neuronal stimulation promotes axon outgrowth and myelination of motor neurons in a three‐dimensional motor neuron–Schwann cell coculture model on a microfluidic biochip. Biotechnol Bioeng 2019; 116:2425-2438. [DOI: 10.1002/bit.27083] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/02/2019] [Accepted: 06/06/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Sujin Hyung
- Center for BionicsKorea Institute of Science and Technology Seoul South Korea
- BK21 Plus Transformative Training Program for Creative Mechanical and Aerospace EngineersSeoul National University Seoul South Korea
- Multiscale Mechanical Design School of Mechanical and Aerospace Engineering, Institute of Advanced Machinery and DesignSeoul National University Seoul South Korea
| | - Seung‐Ryeol Lee
- Multiscale Mechanical Design School of Mechanical and Aerospace Engineering, Institute of Advanced Machinery and DesignSeoul National University Seoul South Korea
| | - Yeon Jee Kim
- Center for BionicsKorea Institute of Science and Technology Seoul South Korea
| | - Seokyoung Bang
- Multiscale Mechanical Design School of Mechanical and Aerospace Engineering, Institute of Advanced Machinery and DesignSeoul National University Seoul South Korea
| | - Dongha Tahk
- Multiscale Mechanical Design School of Mechanical and Aerospace Engineering, Institute of Advanced Machinery and DesignSeoul National University Seoul South Korea
| | - Jong‐Chul Park
- Department of Medical Engineering and Brain Korea 21 PLUS Project for Medical ScienceYonsei University College of Medicine Seoul South Korea
| | - Jun‐Kyo Francis Suh
- Center for BionicsKorea Institute of Science and Technology Seoul South Korea
| | - Noo Li Jeon
- Multiscale Mechanical Design School of Mechanical and Aerospace Engineering, Institute of Advanced Machinery and DesignSeoul National University Seoul South Korea
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61
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Yildirimer L, Zhang Q, Kuang S, Cheung CWJ, Chu KA, He Y, Yang M, Zhao X. Engineering three-dimensional microenvironments towards
in vitro
disease models of the central nervous system. Biofabrication 2019; 11:032003. [DOI: 10.1088/1758-5090/ab17aa] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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62
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Reddy S, Xiao Q, Liu H, Li C, Chen S, Wang C, Chiu K, Chen N, Tu Y, Ramakrishna S, He L. Bionanotube/Poly(3,4-ethylenedioxythiophene) Nanohybrid as an Electrode for the Neural Interface and Dopamine Sensor. ACS APPLIED MATERIALS & INTERFACES 2019; 11:18254-18267. [PMID: 31034196 DOI: 10.1021/acsami.9b04862] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Poly(3,4-ethylene dioxythiophene) (PEDOT) is a promising conductive material widely used for interfacing with tissues in biomedical fields because of its unique properties. However, obtaining high charge injection capability and high stability remains challenging. In this study, pristine carbon nanotubes (CNTs) modified by dopamine (DA) self-polymerization on the surface polydopamine (PDA@CNTs) were utilized as dopants of PEDOT to prepare hybrid films through electrochemical deposition on the indium tin oxide (ITO) electrode. The PDA@CNTs-PEDOT film of the nanotube network topography exhibited excellent stability and strong adhesion to the ITO substrate compared with PEDOT and PEDOT/ p-toulene sulfonate. The PDA@CNTs-PEDOT-coated ITO electrodes demonstrated lower impedance and enhanced charge storage capacity than the bare ITO. When applying exogenous electrical stimulation (ES), robust long neurites sprouted from the dorsal root ganglion (DRG) neurons cultured on the PDA@CNTs-PEDOT film. Moreover, ES promoted Schwann cell migration out from the DRG spheres and enhanced myelination. The PDA@CNTs-PEDOT film served as an excellent electrochemical sensor for the detection of DA in the presence of biomolecule interferences. Results would shed light into the advancement of conducting nanohybrids for applications in the multifunctional bioelectrode in neuroscience.
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Affiliation(s)
- Sathish Reddy
- Guangdong-Hongkong-Macau Institute of CNS Regeneration (GHMICR), MOE Joint International Research Laboratory of CNS Regeneration , Jinan University , Guangzhou , Guangdong , 510632 , China
| | - Qiao Xiao
- College of Life Science and Technology , Jinan University , Guangzhou , Guangdong , 510632 , China
| | - Haiqian Liu
- Guangdong-Hongkong-Macau Institute of CNS Regeneration (GHMICR), MOE Joint International Research Laboratory of CNS Regeneration , Jinan University , Guangzhou , Guangdong , 510632 , China
| | - Chuping Li
- Guangdong-Hongkong-Macau Institute of CNS Regeneration (GHMICR), MOE Joint International Research Laboratory of CNS Regeneration , Jinan University , Guangzhou , Guangdong , 510632 , China
| | - Shengfeng Chen
- Guangdong-Hongkong-Macau Institute of CNS Regeneration (GHMICR), MOE Joint International Research Laboratory of CNS Regeneration , Jinan University , Guangzhou , Guangdong , 510632 , China
| | - Cong Wang
- Department of Traditional Therapy , The Second Clinical College of Guangzhou University of Chinese Medicine , Guangzhou 510120 , China
| | - Kin Chiu
- State Key Laboratory of Brain and Cognitive Sciences , The University of Hong Kong , Hong Kong SAR , P. R. China
| | - Nuan Chen
- Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, Faculty of Engineering , National University of Singapore , 117576 , Singapore
| | - Yujie Tu
- College of Life Science and Technology , Jinan University , Guangzhou , Guangdong , 510632 , China
| | - Seeram Ramakrishna
- Guangdong-Hongkong-Macau Institute of CNS Regeneration (GHMICR), MOE Joint International Research Laboratory of CNS Regeneration , Jinan University , Guangzhou , Guangdong , 510632 , China
- Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, Faculty of Engineering , National University of Singapore , 117576 , Singapore
| | - Liumin He
- Guangdong-Hongkong-Macau Institute of CNS Regeneration (GHMICR), MOE Joint International Research Laboratory of CNS Regeneration , Jinan University , Guangzhou , Guangdong , 510632 , China
- College of Life Science and Technology , Jinan University , Guangzhou , Guangdong , 510632 , China
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Sun Y, Quan Q, Meng H, Zheng Y, Peng J, Hu Y, Feng Z, Sang X, Qiao K, He W, Chi X, Zhao L. Enhanced Neurite Outgrowth on a Multiblock Conductive Nerve Scaffold with Self-Powered Electrical Stimulation. Adv Healthc Mater 2019; 8:e1900127. [PMID: 30941919 DOI: 10.1002/adhm.201900127] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 03/07/2019] [Indexed: 01/20/2023]
Abstract
Electrical stimulation (ES) is widely applied to promote nerve regeneration. Currently, metal needles are used to exert external ES, which may cause pain and risk of infection. In this work, a multiblock conductive nerve scaffold with self-powered ES by the consumption of glucose and oxygen is prepared. The conductive substrate is prepared by in situ polymerization of polypyrrole (PPy) on the nanofibers of bacterial cellulose (BC). Platinum nanoparticles are electrodeposited on the anode side for glucose oxidation, while nitrogen-doped carbon nanotubes (N-CNTs) are loaded on the cathode side for oxygen reduction. The scaffold shows good mechanical property, flexibility and conductivity. The scaffold can form a potential difference of above 300 mV between the anode and the cathode in PBS with 5 × 10-3 m glucose. Dorsal root ganglions cultured on the Pt-BC/PPy-N-CNTs scaffold are 55% longer in mean neurite length than those cultured on BC/PPy. In addition, in vivo study indicates that the Pt-BC/PPy-N-CNTs scaffold promotes nerve regeneration compared with the BC/PPy group. This paper presents a novel design of a nerve scaffold with self-powered ES. In the future, it can be combined with other features to promote nerve regeneration.
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Affiliation(s)
- Yi Sun
- School of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 China
| | - Qi Quan
- Beijing Key Lab of Regenerative Medicine in OrthopedicsKey Laboratory of Musculoskeletal Trauma & War InjuriesPLA Institute of OrthopedicsChinese PLA General Hospital Beijing 100853 China
| | - Haoye Meng
- School of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 China
- Beijing Key Lab of Regenerative Medicine in OrthopedicsKey Laboratory of Musculoskeletal Trauma & War InjuriesPLA Institute of OrthopedicsChinese PLA General Hospital Beijing 100853 China
| | - Yudong Zheng
- School of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 China
| | - Jiang Peng
- Beijing Key Lab of Regenerative Medicine in OrthopedicsKey Laboratory of Musculoskeletal Trauma & War InjuriesPLA Institute of OrthopedicsChinese PLA General Hospital Beijing 100853 China
- Co‐innovation Center of NeuroregenerationNantong University Nantong Jiangsu Province 226007 China
| | - Yaxin Hu
- School of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 China
| | - Zhaoxuan Feng
- School of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 China
| | - Xiao Sang
- School of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 China
| | - Kun Qiao
- School of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 China
| | - Wei He
- School of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 China
| | - Xiaoqi Chi
- School of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 China
| | - Liang Zhao
- Research Center for BioEngineering and Sensing TechnologySchool of Chemistry and Biological EngineeringUniversity of Science and Technology Beijing Beijing 100083 China
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64
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Johnson CDL, Ganguly D, Zuidema JM, Cardinal TJ, Ziemba AM, Kearns KR, McCarthy SM, Thompson DM, Ramanath G, Borca-Tasciuc DA, Dutz S, Gilbert RJ. Injectable, Magnetically Orienting Electrospun Fiber Conduits for Neuron Guidance. ACS APPLIED MATERIALS & INTERFACES 2019; 11:356-372. [PMID: 30516370 PMCID: PMC6520652 DOI: 10.1021/acsami.8b18344] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Magnetic electrospun fibers are of interest for minimally invasive biomaterial applications that also strive to provide cell guidance. Magnetic electrospun fibers can be injected and then magnetically positioned in situ, and the aligned fiber scaffolds provide consistent topographical guidance to cells. In this study, magnetically responsive aligned poly-l-lactic acid electrospun fiber scaffolds were developed and tested for neural applications. Incorporating oleic acid-coated iron oxide nanoparticles significantly increased neurite outgrowth, reduced the fiber alignment, and increased the surface nanotopography of the electrospun fibers. After verifying neuron viability on two-dimensional scaffolds, the system was tested as an injectable three-dimensional scaffold. Small conduits of aligned magnetic fibers were easily injected in a collagen or fibrinogen hydrogel solution and repositioned using an external magnetic field. The aligned magnetic fibers provided internal directional guidance to neurites within a three-dimensional collagen or fibrin model hydrogel, supplemented with Matrigel. Neurites growing from dorsal root ganglion explants extended 1.4-3× farther on the aligned fibers compared with neurites extending in the hydrogel alone. Overall, these results show that magnetic electrospun fiber scaffolds can be injected and manipulated with a magnetic field in situ to provide directional guidance to neurons inside an injectable hydrogel. Most importantly, this injectable guidance system increased both neurite alignment and neurite length within the hydrogel scaffold.
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Affiliation(s)
- Christopher D. L. Johnson
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590, United States
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590, United States
| | - Debmalya Ganguly
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590, United States
- Department of Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Jonathan M. Zuidema
- Department of Chemistry and Biochemistry, University of California at San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Thomas J. Cardinal
- Department of Materials Science, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Alexis M. Ziemba
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590, United States
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590, United States
| | - Kathryn R. Kearns
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590, United States
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590, United States
| | - Simon M. McCarthy
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590, United States
| | - Deanna M. Thompson
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590, United States
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590, United States
| | - Ganpati Ramanath
- Department of Chemistry and Biochemistry, University of California at San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Diana A. Borca-Tasciuc
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590, United States
| | - Silvio Dutz
- Institute of Biomedical Engineering and Informatics, Technische Universität Ilmenau, Gustav-Kirchhoff-Straße, 298693 Ilmenau, Germany
| | - Ryan J. Gilbert
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590, United States
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590, United States
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65
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Sorushanova A, Delgado LM, Wu Z, Shologu N, Kshirsagar A, Raghunath R, Mullen AM, Bayon Y, Pandit A, Raghunath M, Zeugolis DI. The Collagen Suprafamily: From Biosynthesis to Advanced Biomaterial Development. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1801651. [PMID: 30126066 DOI: 10.1002/adma.201801651] [Citation(s) in RCA: 476] [Impact Index Per Article: 95.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 06/03/2018] [Indexed: 05/20/2023]
Abstract
Collagen is the oldest and most abundant extracellular matrix protein that has found many applications in food, cosmetic, pharmaceutical, and biomedical industries. First, an overview of the family of collagens and their respective structures, conformation, and biosynthesis is provided. The advances and shortfalls of various collagen preparations (e.g., mammalian/marine extracted collagen, cell-produced collagens, recombinant collagens, and collagen-like peptides) and crosslinking technologies (e.g., chemical, physical, and biological) are then critically discussed. Subsequently, an array of structural, thermal, mechanical, biochemical, and biological assays is examined, which are developed to analyze and characterize collagenous structures. Lastly, a comprehensive review is provided on how advances in engineering, chemistry, and biology have enabled the development of bioactive, 3D structures (e.g., tissue grafts, biomaterials, cell-assembled tissue equivalents) that closely imitate native supramolecular assemblies and have the capacity to deliver in a localized and sustained manner viable cell populations and/or bioactive/therapeutic molecules. Clearly, collagens have a long history in both evolution and biotechnology and continue to offer both challenges and exciting opportunities in regenerative medicine as nature's biomaterial of choice.
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Affiliation(s)
- Anna Sorushanova
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Luis M Delgado
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Zhuning Wu
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Naledi Shologu
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Aniket Kshirsagar
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Rufus Raghunath
- Centre for Cell Biology and Tissue Engineering, Competence Centre Tissue Engineering for Drug Development (TEDD), Department Life Sciences and Facility Management, Institute for Chemistry and Biotechnology (ICBT), Zürich University of Applied Sciences, Wädenswil, Switzerland
| | | | - Yves Bayon
- Sofradim Production-A Medtronic Company, Trevoux, France
| | - Abhay Pandit
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Michael Raghunath
- Centre for Cell Biology and Tissue Engineering, Competence Centre Tissue Engineering for Drug Development (TEDD), Department Life Sciences and Facility Management, Institute for Chemistry and Biotechnology (ICBT), Zürich University of Applied Sciences, Wädenswil, Switzerland
| | - Dimitrios I Zeugolis
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
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66
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Hu S, Zhou L, Tu L, Dai C, Fan L, Zhang K, Yao T, Chen J, Wang Z, Xing J, Fu R, Yu P, Tan G, Du J, Ning C. Elastomeric conductive hybrid hydrogels with continuous conductive networks. J Mater Chem B 2019; 7:2389-2397. [DOI: 10.1039/c9tb00173e] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The DA–PPy–GP ECHs with continuous conductive networks show high force and strain sensitivity.
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67
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Wang J, Tian L, Chen N, Ramakrishna S, Mo X. The cellular response of nerve cells on poly-l-lysine coated PLGA-MWCNTs aligned nanofibers under electrical stimulation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 91:715-726. [DOI: 10.1016/j.msec.2018.06.025] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 04/27/2018] [Accepted: 06/11/2018] [Indexed: 11/16/2022]
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68
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Imaninezhad M, Pemberton K, Xu F, Kalinowski K, Bera R, Zustiak SP. Directed and enhanced neurite outgrowth following exogenous electrical stimulation on carbon nanotube-hydrogel composites. J Neural Eng 2018; 15:056034. [DOI: 10.1088/1741-2552/aad65b] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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69
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Soucy JR, Shirzaei Sani E, Portillo Lara R, Diaz D, Dias F, Weiss AS, Koppes AN, Koppes RA, Annabi N. Photocrosslinkable Gelatin/Tropoelastin Hydrogel Adhesives for Peripheral Nerve Repair. Tissue Eng Part A 2018; 24:1393-1405. [PMID: 29580168 PMCID: PMC6150941 DOI: 10.1089/ten.tea.2017.0502] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 03/21/2018] [Indexed: 12/29/2022] Open
Abstract
Suturing peripheral nerve transections is the predominant therapeutic strategy for nerve repair. However, the use of sutures leads to scar tissue formation, hinders nerve regeneration, and prevents functional recovery. Fibrin-based adhesives have been widely used for nerve reconstruction, but their limited adhesive and mechanical strength and inability to promote nerve regeneration hamper their utility as a stand-alone intervention. To overcome these challenges, we engineered composite hydrogels that are neurosupportive and possess strong tissue adhesion. These composites were synthesized by photocrosslinking two naturally derived polymers, gelatin-methacryloyl (GelMA) and methacryloyl-substituted tropoelastin (MeTro). The engineered materials exhibited tunable mechanical properties by varying the GelMA/MeTro ratio. In addition, GelMA/MeTro hydrogels exhibited 15-fold higher adhesive strength to nerve tissue ex vivo compared to fibrin control. Furthermore, the composites were shown to support Schwann cell (SC) viability and proliferation, as well as neurite extension and glial cell participation in vitro, which are essential cellular components for nerve regeneration. Finally, subcutaneously implanted GelMA/MeTro hydrogels exhibited slower degradation in vivo compared with pure GelMA, indicating its potential to support the growth of slowly regenerating nerves. Thus, GelMA/MeTro composites may be used as clinically relevant biomaterials to regenerate nerves and reduce the need for microsurgical suturing during nerve reconstruction.
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Affiliation(s)
- Jonathan R. Soucy
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
| | - Ehsan Shirzaei Sani
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
| | - Roberto Portillo Lara
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
- Tecnológico de Monterrey, Escuela de IngenierÍa y Ciencias, Zapopan, JAL, Mexico
| | - David Diaz
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
| | - Felipe Dias
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
| | - Anthony S. Weiss
- Charles Perkins Centre, School of Life and Environmental Sciences and Bosch Institute, University of Sydney, Sydney, Australia
| | - Abigail N. Koppes
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
- Department of Biology, Northeastern University, Boston, Massachusetts
| | - Ryan A. Koppes
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
| | - Nasim Annabi
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California
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70
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Carbon nanotube scaffolds as emerging nanoplatform for myocardial tissue regeneration: A review of recent developments and therapeutic implications. Biomed Pharmacother 2018; 104:496-508. [DOI: 10.1016/j.biopha.2018.05.066] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Revised: 05/14/2018] [Accepted: 05/14/2018] [Indexed: 01/19/2023] Open
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71
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Niemczyk B, Sajkiewicz P, Kolbuk D. Injectable hydrogels as novel materials for central nervous system regeneration. J Neural Eng 2018; 15:051002. [DOI: 10.1088/1741-2552/aacbab] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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72
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Zhang Q, Beirne S, Shu K, Esrafilzadeh D, Huang XF, Wallace GG. Electrical Stimulation with a Conductive Polymer Promotes Neurite Outgrowth and Synaptogenesis in Primary Cortical Neurons in 3D. Sci Rep 2018; 8:9855. [PMID: 29959353 PMCID: PMC6026172 DOI: 10.1038/s41598-018-27784-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 05/31/2018] [Indexed: 11/08/2022] Open
Abstract
Deficits in neurite outgrowth and synaptogenesis have been recognized as an underlying developmental aetiology of psychosis. Electrical stimulation promotes neuronal induction including neurite outgrowth and branching. However, the effect of electrical stimulation using 3D electrodes on neurite outgrowth and synaptogenesis has not been explored. This study examined the effect of 3D electrical stimulation on 3D primary cortical neuronal cultures. 3D electrical stimulation improved neurite outgrowth in 3D neuronal cultures from both wild-type and NRG1-knockout (NRG1-KO) mice. The expression of synaptophysin and PSD95 were elevated under 3D electrical stimulation. Interestingly, 3D electrical stimulation also improved neural cell aggregation as well as the expression of PSA-NCAM. Our findings suggest that the 3D electrical stimulation system can rescue neurite outgrowth deficits in a 3D culturing environment, one that more closely resembles the in vivo biological system compared to more traditionally used 2D cell culture, including the observation of cell aggregates as well as the upregulated PSA-NCAM protein and transcript expression. This study provides a new concept for a possible diagnostic platform for neurite deficits in neurodevelopmental diseases, as well as a viable platform to test treatment options (such as drug delivery) in combination with electrical stimulation.
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Affiliation(s)
- Qingsheng Zhang
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Squires Way, Fairy Meadow, NSW, 2519, Australia.
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.
| | - Stephen Beirne
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Squires Way, Fairy Meadow, NSW, 2519, Australia
| | - Kewei Shu
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Squires Way, Fairy Meadow, NSW, 2519, Australia
| | - Dorna Esrafilzadeh
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Squires Way, Fairy Meadow, NSW, 2519, Australia
- Centre for Advanced Electronics and Sensors (CADES), School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
| | - Xu-Feng Huang
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia
- Centre for Translational Neuroscience, School of Medicine, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Gordon G Wallace
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Squires Way, Fairy Meadow, NSW, 2519, Australia.
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73
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Spencer AR, Primbetova A, Koppes AN, Koppes RA, Fenniri H, Annabi N. Electroconductive Gelatin Methacryloyl-PEDOT:PSS Composite Hydrogels: Design, Synthesis, and Properties. ACS Biomater Sci Eng 2018; 4:1558-1567. [PMID: 33445313 PMCID: PMC11150039 DOI: 10.1021/acsbiomaterials.8b00135] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Electroconductive hydrogels are used in a wide range of biomedical applications, including electrodes for patient monitoring and electrotherapy, or as biosensors and electrochemical actuators. Approaches to design electroconductive hydrogels are often met with low biocompatibility and biodegradability, limiting their potential applications as biomaterials. In this study, composite hydrogels were prepared from a conducting polymer complex, poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) dispersed within a photo-crosslinkable naturally derived hydrogel, gelatin methacryloyl (GelMA). To determine the impact of PEDOT:PSS loading on physical and microstructural properties and cellular responses, the electrical and mechanical properties, electrical properties, and biocompatibility of hydrogels loaded with 0-0.3% (w/v) PEDOT:PSS were evaluated and compared to GelMA control. Our results indicated that the properties of the hydrogels, such as mechanics, degradation, and swelling, could be tuned by changing the concentration of PEDOT:PSS. In particular, the impedance of hydrogels decreased from 449.0 kOhm for control GelMA to 281.2 and 261.0 kOhm for hydrogels containing 0.1% (w/v) and 0.3% (w/v) PEDOT:PSS at 1 Hz frequency, respectively. In addition, an ex vivo experiment demonstrated that the threshold voltage to stimulate contraction in explanted abdominal tissue connected by the composite hydrogels decreased from 9.3 ± 1.2 V for GelMA to 6.7 ± 1.5 V and 4.0 ± 1.0 V for hydrogels containing 0.1% (w/v) and 0.3% (w/v) PEDOT:PSS, respectively. In vitro studies showed that composite hydrogels containing 0.1% (w/v) PEDOT:PSS supported the viability and spreading of C2C12 myoblasts, comparable to GelMA controls. These results indicate the potential of our composite hydrogel as an electroconductive biomaterial.
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Affiliation(s)
| | | | | | | | | | - Nasim Annabi
- Biomaterials Innovation Research Center, Brigham and Women's Hospital, Harvard Medical School, 65 Landsdowne Street, Boston, Massachusetts 02139, United States
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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74
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Lee S, Esworthy T, Stake S, Miao S, Zuo YY, Harris BT, Zhang LG. Advances in 3D Bioprinting for Neural Tissue Engineering. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/adbi.201700213] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Se‐Jun Lee
- Department of Mechanical and Aerospace Engineering George Washington University Washington DC 20052 USA
| | - Timothy Esworthy
- Department of Mechanical and Aerospace Engineering George Washington University Washington DC 20052 USA
| | - Seth Stake
- Department of Medicine George Washington University Washington DC 20052 USA
| | - Shida Miao
- Department of Mechanical and Aerospace Engineering George Washington University Washington DC 20052 USA
| | - Yi Y. Zuo
- Department of Mechanical Engineering University of Hawaii at Manoa Honolulu HI 96822 USA
| | - Brent T. Harris
- Department of Neurology and Pathology Georgetown University Washington DC 20007 USA
| | - Lijie Grace Zhang
- Department of Mechanical and Aerospace Engineering George Washington University Washington DC 20052 USA
- Department of Medicine George Washington University Washington DC 20052 USA
- Department of Biomedical Engineering George Washington University Washington DC 20052 USA
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75
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Lin CW, Yang H, Sanchez SR, Mao W, Pang L, Beckingham KM, Bast RC, Weisman RB. In Vivo Optical Detection and Spectral Triangulation of Carbon Nanotubes. ACS APPLIED MATERIALS & INTERFACES 2017; 9:41680-41690. [PMID: 29131572 DOI: 10.1021/acsami.7b12916] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In the first in vivo demonstration of spectral triangulation, biocompatible composites of single-walled carbon nanotubes in Matrigel have been surgically implanted into mouse ovaries and then noninvasively detected and located. This optical method deduces the three-dimensional position of a short-wave IR emission source from the wavelength-dependent attenuation of fluorescence in tissues. Measurements were performed with a second-generation optical scanner that uses a light-emitting diode matrix emitting at 736 nm for diffuse specimen excitation. The intrinsic short-wave IR fluorescence of the nanotubes was collected at various positions on the specimen surface, spectrally filtered, and detected by a photon-counting InGaAs avalanche photodiode. Sensitivity studies showed a detection limit of ∼120 pg of nanotubes located beneath ∼3 mm of tissue. In addition, the mass and location of implanted nanotubes could be deduced through spectral triangulation with sub-millimeter accuracy, as validated with the aid of magnetic resonance imaging (MRI) data. Dual-modality imaging combining spectral triangulation with computed tomography or MRI will allow accurate registration of emission centers with anatomical features. These results are a step toward the future use of probes with targeting agents such as antibodies linked to nanotube tags for the noninvasive detection and imaging of tumors in preclinical research on small animals. Translation to the clinic could aid in early detection of ovarian cancer and identification of metastases for resection during primary surgery.
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Affiliation(s)
| | - Hailing Yang
- Department of Experimental Therapeutics, University of Texas M.D. Anderson Cancer Center , Houston, Texas 77030, United States
| | | | - Weiqun Mao
- Department of Experimental Therapeutics, University of Texas M.D. Anderson Cancer Center , Houston, Texas 77030, United States
| | - Lan Pang
- Department of Experimental Therapeutics, University of Texas M.D. Anderson Cancer Center , Houston, Texas 77030, United States
| | | | - Robert C Bast
- Department of Experimental Therapeutics, University of Texas M.D. Anderson Cancer Center , Houston, Texas 77030, United States
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76
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Xu C, Guan S, Wang S, Gong W, Liu T, Ma X, Sun C. Biodegradable and electroconductive poly(3,4-ethylenedioxythiophene)/carboxymethyl chitosan hydrogels for neural tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017. [PMID: 29519441 DOI: 10.1016/j.msec.2017.11.032] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Electroconductive hydrogels with excellent electromechanical properties have become crucial for biomedical applications. In this study, we developed a conductive composite hydrogel via in-situ chemical polymerization based on carboxymethyl chitosan (CMCS), as a biodegradable base macromolecular network, and poly(3,4-ethylenedioxythiophene) (PEDOT), as a conductive polymer layer. The physicochemical and electrochemical properties of conductive hydrogels (PEDOT/CMCS) with different contents of PEDOT polymer were analyzed. Cell viability and proliferation of neuron-like rat phaeochromocytoma (PC12) cells on these three-dimensional conductive hydrogels were evaluated in vitro. As results, the prepared semi-interpenetrating network hydrogels were shown to consist of up to 1825±135wt% of water with a compressive modulus of 9.59±0.49kPa, a porosity of 93.95±1.03% and an electrical conductivity of (4.68±0.28)×10-3S·cm-1. Cell experiments confirmed that PEDOT/CMCS hydrogels not only had no cytotoxicity, but also supported cell adhesion, viability and proliferation. These results demonstrated that the incorporation of conductive PEDOT component into CMCS hydrogels endowed the hydrogels with enhanced mechanical strength, conductivity and kept the biocompatibility. Thus, the attractive performances of these composite hydrogels would make them suitable for further neural tissue engineering application, such as nerve regeneration scaffold materials.
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Affiliation(s)
- Chao Xu
- Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, PR China
| | - Shui Guan
- Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, PR China.
| | - Shuping Wang
- Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, PR China
| | - Weitao Gong
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, Dalian 116024, PR China
| | - Tianqing Liu
- Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, PR China
| | - Xuehu Ma
- Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, PR China
| | - Changkai Sun
- Department of Biomedical Engineering, Dalian University of Technology, Dalian 116024, PR China
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77
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Huang G, Li F, Zhao X, Ma Y, Li Y, Lin M, Jin G, Lu TJ, Genin GM, Xu F. Functional and Biomimetic Materials for Engineering of the Three-Dimensional Cell Microenvironment. Chem Rev 2017; 117:12764-12850. [PMID: 28991456 PMCID: PMC6494624 DOI: 10.1021/acs.chemrev.7b00094] [Citation(s) in RCA: 457] [Impact Index Per Article: 65.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The cell microenvironment has emerged as a key determinant of cell behavior and function in development, physiology, and pathophysiology. The extracellular matrix (ECM) within the cell microenvironment serves not only as a structural foundation for cells but also as a source of three-dimensional (3D) biochemical and biophysical cues that trigger and regulate cell behaviors. Increasing evidence suggests that the 3D character of the microenvironment is required for development of many critical cell responses observed in vivo, fueling a surge in the development of functional and biomimetic materials for engineering the 3D cell microenvironment. Progress in the design of such materials has improved control of cell behaviors in 3D and advanced the fields of tissue regeneration, in vitro tissue models, large-scale cell differentiation, immunotherapy, and gene therapy. However, the field is still in its infancy, and discoveries about the nature of cell-microenvironment interactions continue to overturn much early progress in the field. Key challenges continue to be dissecting the roles of chemistry, structure, mechanics, and electrophysiology in the cell microenvironment, and understanding and harnessing the roles of periodicity and drift in these factors. This review encapsulates where recent advances appear to leave the ever-shifting state of the art, and it highlights areas in which substantial potential and uncertainty remain.
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Affiliation(s)
- Guoyou Huang
- MOE Key Laboratory of Biomedical Information
Engineering, School of Life Science and Technology, Xi’an Jiaotong
University, Xi’an 710049, People’s Republic of China
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
| | - Fei Li
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
- Department of Chemistry, School of Science,
Xi’an Jiaotong University, Xi’an 710049, People’s Republic
of China
| | - Xin Zhao
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
- Interdisciplinary Division of Biomedical
Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong,
People’s Republic of China
| | - Yufei Ma
- MOE Key Laboratory of Biomedical Information
Engineering, School of Life Science and Technology, Xi’an Jiaotong
University, Xi’an 710049, People’s Republic of China
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
| | - Yuhui Li
- MOE Key Laboratory of Biomedical Information
Engineering, School of Life Science and Technology, Xi’an Jiaotong
University, Xi’an 710049, People’s Republic of China
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
| | - Min Lin
- MOE Key Laboratory of Biomedical Information
Engineering, School of Life Science and Technology, Xi’an Jiaotong
University, Xi’an 710049, People’s Republic of China
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
| | - Guorui Jin
- MOE Key Laboratory of Biomedical Information
Engineering, School of Life Science and Technology, Xi’an Jiaotong
University, Xi’an 710049, People’s Republic of China
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
| | - Tian Jian Lu
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
- MOE Key Laboratory for Multifunctional Materials
and Structures, Xi’an Jiaotong University, Xi’an 710049,
People’s Republic of China
| | - Guy M. Genin
- MOE Key Laboratory of Biomedical Information
Engineering, School of Life Science and Technology, Xi’an Jiaotong
University, Xi’an 710049, People’s Republic of China
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
- Department of Mechanical Engineering &
Materials Science, Washington University in St. Louis, St. Louis 63130, MO,
USA
- NSF Science and Technology Center for
Engineering MechanoBiology, Washington University in St. Louis, St. Louis 63130,
MO, USA
| | - Feng Xu
- MOE Key Laboratory of Biomedical Information
Engineering, School of Life Science and Technology, Xi’an Jiaotong
University, Xi’an 710049, People’s Republic of China
- Bioinspired Engineering and Biomechanics Center
(BEBC), Xi’an Jiaotong University, Xi’an 710049, People’s
Republic of China
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78
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Ayala-Caminero R, Pinzón-Herrera L, Martinez CAR, Almodovar J. Polymeric scaffolds for three-dimensional culture of nerve cells: a model of peripheral nerve regeneration. MRS COMMUNICATIONS 2017; 7:391-415. [PMID: 29515936 PMCID: PMC5836791 DOI: 10.1557/mrc.2017.90] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 08/28/2017] [Indexed: 05/09/2023]
Abstract
Understanding peripheral nerve repair requires the evaluation of 3D structures that serve as platforms for 3D cell culture. Multiple platforms for 3D cell culture have been developed, mimicking peripheral nerve growth and function, in order to study tissue repair or diseases. To recreate an appropriate 3D environment for peripheral nerve cells, key factors are to be considered including: selection of cells, polymeric biomaterials to be used, and fabrication techniques to shape and form the 3D scaffolds for cellular culture. This review focuses on polymeric 3D platforms used for the development of 3D peripheral nerve cell cultures.
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Affiliation(s)
- Radamés Ayala-Caminero
- Bioengineering Program, University of Puerto Rico Mayaguez, Call Box 9000, Mayagüez, Puerto Rico, 00681-9000, USA
| | - Luis Pinzón-Herrera
- Department of Chemical Engineering, University of Puerto Rico Mayagüez, Call Box 9000, Mayaguez, Puerto Rico, 00681-9000, USA
| | - Carol A Rivera Martinez
- Bioengineering Program, University of Puerto Rico Mayaguez, Call Box 9000, Mayagüez, Puerto Rico, 00681-9000, USA
| | - Jorge Almodovar
- Bioengineering Program, University of Puerto Rico Mayaguez, Call Box 9000, Mayagüez, Puerto Rico, 00681-9000, USA
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79
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Fei J, Wen X, Lin X, Saijilafu, Wang W, Ren O, Chen X, Tan L, Yang K, Yang H, Yang L. Biocompatibility and neurotoxicity of magnesium alloys potentially used for neural repairs. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 78:1155-1163. [DOI: 10.1016/j.msec.2017.04.106] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Accepted: 04/18/2017] [Indexed: 01/21/2023]
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80
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Del Valle LJ, Díaz A, Puiggalí J. Hydrogels for Biomedical Applications: Cellulose, Chitosan, and Protein/Peptide Derivatives. Gels 2017; 3:E27. [PMID: 30920524 PMCID: PMC6318613 DOI: 10.3390/gels3030027] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 07/09/2017] [Accepted: 07/10/2017] [Indexed: 12/21/2022] Open
Abstract
Hydrogels based on polysaccharide and protein natural polymers are of great interest in biomedical applications and more specifically for tissue regeneration and drug delivery. Cellulose, chitosan (a chitin derivative), and collagen are probably the most important components since they are the most abundant natural polymers on earth (cellulose and chitin) and in the human body (collagen). Peptides also merit attention because their self-assembling properties mimic the proteins that are present in the extracellular matrix. The present review is mainly focused on explaining the recent advances on hydrogels derived from the indicated polymers or their combinations. Attention has also been paid to the development of hydrogels for innovative biomedical uses. Therefore, smart materials displaying stimuli responsiveness and having shape memory properties are considered. The use of micro- and nanogels for drug delivery applications is also discussed, as well as the high potential of protein-based hydrogels in the production of bioactive matrices with recognition ability (molecular imprinting). Finally, mention is also given to the development of 3D bioprinting technologies.
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Affiliation(s)
- Luís J Del Valle
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, Barcelona 08019, Spain.
| | - Angélica Díaz
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, Barcelona 08019, Spain.
| | - Jordi Puiggalí
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, Barcelona 08019, Spain.
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81
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Recent advances in bioactive 1D and 2D carbon nanomaterials for biomedical applications. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 14:2433-2454. [PMID: 28552644 DOI: 10.1016/j.nano.2017.03.021] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 02/09/2017] [Accepted: 03/06/2017] [Indexed: 12/18/2022]
Abstract
One-dimensional (1D) carbon nanotubes (CNTs) and the two-dimensional (2D) graphene represent the most widely studied allotropes of carbon. Due to their unique structural, electrical, mechanical and optical properties, 1D and 2D carbon nanostructures are considered to be leading candidates for numerous applications in biomedical fields, including tissue engineering, drug delivery, bioimaging and biosensors. The biocompatibility and toxicity issues associated with these nanostructures have been a critical impediment for their use in biomedical applications. In this review, we present an overview of the various materials types, properties, functionalization strategies and characterization methods of 1D and 2D carbon nanomaterials and their derivatives in terms of their biomedical applications. In addition, we discuss various factors and mechanisms affecting their toxicity and biocompatibility.
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82
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Bonfrate V, Manno D, Serra A, Salvatore L, Sannino A, Buccolieri A, Serra T, Giancane G. Enhanced electrical conductivity of collagen films through long-range aligned iron oxide nanoparticles. J Colloid Interface Sci 2017; 501:185-191. [PMID: 28456102 DOI: 10.1016/j.jcis.2017.04.067] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 04/19/2017] [Accepted: 04/21/2017] [Indexed: 11/18/2022]
Abstract
The development of biocompatible collagen substrates able to conduct electric current along specific pathways represent an appealing issue in tissue engineering, since it is well known that electrical stimuli significantly affects important cell behaviour, such as proliferation, differentiation, directional migration, and, therefore, tissue regeneration. In this work, a cheap and easy approach was proposed to produce collagen-based films exhibiting enhanced electrical conductivity, through the simple manipulation of a weak external magnetic trigger. Paramagnetic iron oxide nanoparticles (NPs) capped by a biocompatible polyethylene-glycol coating were synthetized by a co-precipitation and solvothermic method and sprayed onto a collagen suspension. The system was then subjected to a static external magnetic field in order to conveniently tune NPs organization. Under the action of the external stimulus, NPs were induced to orient along the magnetic field lines, forming long-range aligned micropatterns within the collagen matrix. Drying of the substrate following water evaporation permanently blocked the magnetic architecture produced, thereby preserving NPs organization even after magnetic field removal. Electrical conductivity measurements clearly showed that the presence of such a magnetic framework endowed collagen with marked conductive properties in specific directions. The biocompatibility of the paramagnetic collagen films was also demonstrated by MTT cell cytotoxicity test.
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Affiliation(s)
- Valentina Bonfrate
- Department of Engineering for Innovation, University of Salento, Via Per Arnesano, Lecce, Italy
| | - Daniela Manno
- Department of Mathematics & Physics "Ennio De Giorgi", University of Salento, Via Per Arnesano, Lecce, Italy
| | - Antonio Serra
- Department of Mathematics & Physics "Ennio De Giorgi", University of Salento, Via Per Arnesano, Lecce, Italy
| | - Luca Salvatore
- Department of Engineering for Innovation, University of Salento, Via Per Arnesano, Lecce, Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Via Per Arnesano, Lecce, Italy
| | - Alessandro Buccolieri
- Biological and Environmental Sciences and Technologies, University of Salento, Via Per Arnesano, Lecce, Italy
| | - Tiziano Serra
- AO Research Institute, Clavadelerstrasse 8, 7270 Davos, Switzerland
| | - Gabriele Giancane
- Department of Cultural Heritage, University of Salento, Via D. Birago, 64, Lecce, Italy.
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83
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Sun H, Zhou J, Huang Z, Qu L, Lin N, Liang C, Dai R, Tang L, Tian F. Carbon nanotube-incorporated collagen hydrogels improve cell alignment and the performance of cardiac constructs. Int J Nanomedicine 2017; 12:3109-3120. [PMID: 28450785 PMCID: PMC5399986 DOI: 10.2147/ijn.s128030] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Carbon nanotubes (CNTs) provide an essential 2-D microenvironment for cardiomyocyte growth and function. However, it remains to be elucidated whether CNT nanostructures can promote cell–cell integrity and facilitate the formation of functional tissues in 3-D hydrogels. Here, single-walled CNTs were incorporated into collagen hydrogels to fabricate (CNT/Col) hydrogels, which improved mechanical and electrical properties. The incorporation of CNTs (up to 1 wt%) exhibited no toxicity to cardiomyocytes and enhanced cell adhesion and elongation. Through the use of immunohistochemical staining, transmission electron microscopy, and intracellular calcium-transient measurement, the incorporation of CNTs was found to improve cell alignment and assembly remarkably, which led to the formation of engineered cardiac tissues with stronger contraction potential. Importantly, cardiac tissues based on CNT/Col hydrogels were noted to have better functionality. Collectively, the incorporation of CNTs into the Col hydrogels improved cell alignment and the performance of cardiac constructs. Our study suggests that CNT/Col hydrogels offer a promising tissue scaffold for cardiac constructs, and might serve as injectable biomaterials to deliver cell or drug molecules for cardiac regeneration following myocardial infarction in the near future.
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Affiliation(s)
- Hongyu Sun
- General Surgery Center, Chengdu Military General Hospital, Chengdu, China
| | - Jing Zhou
- General Surgery Center, Chengdu Military General Hospital, Chengdu, China
| | - Zhu Huang
- General Surgery Center, Chengdu Military General Hospital, Chengdu, China
| | - Linlin Qu
- General Surgery Center, Chengdu Military General Hospital, Chengdu, China
| | - Ning Lin
- General Surgery Center, Chengdu Military General Hospital, Chengdu, China
| | - Chengxiao Liang
- General Surgery Center, Chengdu Military General Hospital, Chengdu, China
| | - Ruiwu Dai
- General Surgery Center, Chengdu Military General Hospital, Chengdu, China
| | - Lijun Tang
- General Surgery Center, Chengdu Military General Hospital, Chengdu, China
| | - Fuzhou Tian
- General Surgery Center, Chengdu Military General Hospital, Chengdu, China
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84
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Motamedi AS, Mirzadeh H, Hajiesmaeilbaigi F, Bagheri-Khoulenjani S, Shokrgozar MA. Piezoelectric electrospun nanocomposite comprising Au NPs/PVDF for nerve tissue engineering. J Biomed Mater Res A 2017; 105:1984-1993. [DOI: 10.1002/jbm.a.36050] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 02/18/2017] [Accepted: 02/27/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Asma S. Motamedi
- Biomedical Engineering Department; Amirkabir University of Technology (Tehran Polytechnic); Tehran Iran
| | - Hamid Mirzadeh
- Biomedical Engineering Department; Amirkabir University of Technology (Tehran Polytechnic); Tehran Iran
- Polymer and Color Engineering Department; Amirkabir University of Technology (Tehran Polytechnic); Tehran Iran
| | | | - Shadab Bagheri-Khoulenjani
- Polymer and Color Engineering Department; Amirkabir University of Technology (Tehran Polytechnic); Tehran Iran
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