51
|
Kornev VA, Grebenik EA, Solovieva AB, Dmitriev RI, Timashev PS. Hydrogel-assisted neuroregeneration approaches towards brain injury therapy: A state-of-the-art review. Comput Struct Biotechnol J 2018; 16:488-502. [PMID: 30455858 PMCID: PMC6232648 DOI: 10.1016/j.csbj.2018.10.011] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/18/2018] [Accepted: 10/19/2018] [Indexed: 12/16/2022] Open
Abstract
Recent years have witnessed the development of an enormous variety of hydrogel-based systems for neuroregeneration. Formed from hydrophilic polymers and comprised of up to 90% of water, these three-dimensional networks are promising tools for brain tissue regeneration. They can assist structural and functional restoration of damaged tissues by providing mechanical support and navigating cell fate. Hydrogels also show the potential for brain injury therapy due to their broadly tunable physical, chemical, and biological properties. Hydrogel polymers, which have been extensively implemented in recent brain injury repair studies, include hyaluronic acid, collagen type I, alginate, chitosan, methylcellulose, Matrigel, fibrin, gellan gum, self-assembling peptides and proteins, poly(ethylene glycol), methacrylates, and methacrylamides. When viewed as tools for neuroregeneration, hydrogels can be divided into: (1) hydrogels suitable for brain injury therapy, (2) hydrogels that do not meet basic therapeutic requirements and (3) promising hydrogels which meet the criteria for further investigations. Our analysis shows that fibrin, collagen I and self-assembling peptide-based hydrogels display very attractive properties for neuroregeneration.
Collapse
Affiliation(s)
- Vladimir A. Kornev
- Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., Moscow 119991, Russian Federation
| | - Ekaterina A. Grebenik
- Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., Moscow 119991, Russian Federation
| | - Anna B. Solovieva
- N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygina st., Moscow 117977, Russian Federation
| | - Ruslan I. Dmitriev
- Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., Moscow 119991, Russian Federation
- School of Biochemistry and Cell Biology, University College Cork, Cork, Ireland
| | - Peter S. Timashev
- Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., Moscow 119991, Russian Federation
- N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygina st., Moscow 117977, Russian Federation
- Institute of Photonic Technologies, Research Center “Crystallography and Photonics” Russian Academy of Sciences, 2 Pionerskaya st., Troitsk, Moscow 108840, Russian Federation
| |
Collapse
|
52
|
Palamà IE, D'Amone S, Cortese B. Microenvironmental Rigidity of 3D Scaffolds and Influence on Glioblastoma Cells: A Biomaterial Design Perspective. Front Bioeng Biotechnol 2018; 6:131. [PMID: 30320080 PMCID: PMC6166390 DOI: 10.3389/fbioe.2018.00131] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 09/03/2018] [Indexed: 11/24/2022] Open
Affiliation(s)
| | - Stefania D'Amone
- Nanotechnology Institute, CNR-Nanotechnology Institute, Lecce, Italy
| | - Barbara Cortese
- Nanotechnology Institute, CNR-Nanotechnology Institute, University La Sapienza, Rome, Italy
| |
Collapse
|
53
|
Erickson AE, Levengood SKL, Sun J, Chang FC, Zhang M. Fabrication and Characterization of Chitosan-Hyaluronic Acid Scaffolds with Varying Stiffness for Glioblastoma Cell Culture. Adv Healthc Mater 2018; 7:e1800295. [PMID: 29893067 PMCID: PMC6116517 DOI: 10.1002/adhm.201800295] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 05/05/2018] [Indexed: 12/19/2022]
Abstract
The invasive and recurrent nature of glioblastoma multiforme (GBM) is linked to a small subpopulation of cancer cells, which are self-renewing, resistant to standard treatment regimens, and induce formation of new tumors. Matrix stiffness is implicated in the regulation of cell proliferation, drug resistance, and reversion to a more invasive phenotype. Therefore, understanding the relationship between matrix stiffness and tumor cell behavior is vital to develop appropriate in vitro tumor models. Here, chitosan-hyaluronic acid (CHA) polyelectrolyte complex scaffolds are fabricated with statistically significant stiffness variances to characterize the effect of scaffold stiffness on morphology, proliferation, drug resistance, and gene expression in human glioblastoma cells (U-87 MG). All scaffolds support GBM proliferation over a 12-day culture period, yet larger spheroids are observed in scaffolds with higher stiffness. Additionally, GBM cells cultured in stiffer CHA scaffolds prove significantly more resistant to the common chemotherapeutic temozolomide. Moreover, the stiffer 8% CHA scaffolds exhibit an increase in expression of drug resistance and invasion related genes compared to 2D culture. CHA scaffolds present a tunable microenvironment for enhanced tumor cell malignancy and may provide a valuable in vitro microenvironment for studying tumor progression and screening anticancer therapies.
Collapse
Affiliation(s)
- Ariane E. Erickson
- Department of Materials Science & Engineering, University of Washington, Seattle, Washington 98195, USA,
| | - Sheeny K. Lan Levengood
- Department of Materials Science & Engineering, University of Washington, Seattle, Washington 98195, USA,
| | - Jialu Sun
- Department of Materials Science & Engineering, University of Washington, Seattle, Washington 98195, USA,
| | - Fei-Chien Chang
- Department of Materials Science & Engineering, University of Washington, Seattle, Washington 98195, USA,
| | - Miqin Zhang
- Department of Materials Science & Engineering, University of Washington, Seattle, Washington 98195, USA,
| |
Collapse
|
54
|
Karvinen J, Joki T, Ylä-Outinen L, Koivisto JT, Narkilahti S, Kellomäki M. Soft hydrazone crosslinked hyaluronan- and alginate-based hydrogels as 3D supportive matrices for human pluripotent stem cell-derived neuronal cells. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2017.12.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
55
|
Zaviskova K, Tukmachev D, Dubisova J, Vackova I, Hejcl A, Bystronova J, Pravda M, Scigalkova I, Sulakova R, Velebny V, Wolfova L, Kubinova S. Injectable hydroxyphenyl derivative of hyaluronic acid hydrogel modified with RGD as scaffold for spinal cord injury repair. J Biomed Mater Res A 2018; 106:1129-1140. [PMID: 29266693 DOI: 10.1002/jbm.a.36311] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 11/09/2017] [Accepted: 12/15/2017] [Indexed: 12/24/2022]
Abstract
Hydrogel scaffolds which bridge the lesion, together with stem cell therapy represent a promising approach for spinal cord injury (SCI) repair. In this study, a hydroxyphenyl derivative of hyaluronic acid (HA-PH) was modified with the integrin-binding peptide arginine-glycine-aspartic acid (RGD), and enzymatically crosslinked to obtain a soft injectable hydrogel. Moreover, addition of fibrinogen was used to enhance proliferation of human Wharton's jelly-derived mesenchymal stem cells (hWJ-MSCs) on HA-PH-RGD hydrogel. The neuroregenerative potential of HA-PH-RGD hydrogel was evaluated in vivo in acute and subacute models of SCI. Both HA-PH-RGD hydrogel injection and implantation into the acute spinal cord hemisection cavity resulted in the same axonal and blood vessel density in the lesion area after 2 and 8 weeks. HA-PH-RGD hydrogel alone or combined with fibrinogen (HA-PH-RGD/F) and seeded with hWJ-MSCs was then injected into subacute SCI and evaluated after 8 weeks using behavioural, histological and gene expression analysis. A subacute injection of both HA-PH-RGD and HA-PH-RGD/F hydrogels similarly promoted axonal ingrowth into the lesion and this effect was further enhanced when the HA-PH-RGD/F was combined with hWJ-MSCs. On the other hand, no effect was found on locomotor recovery or the blood vessel ingrowth and density of glial scar around the lesion. In conclusion, we have developed and characterized injectable HA-PH-RGD based hydrogel, which represents a suitable material for further combinatorial therapies in neural tissue engineering. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 1129-1140, 2018.
Collapse
Affiliation(s)
- Kristyna Zaviskova
- Department of Biomaterials and Biophysical Methods, Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czech Republic.,2nd Medical Faculty, Charles University, Prague, Czech Republic
| | - Dmitry Tukmachev
- Department of Biomaterials and Biophysical Methods, Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czech Republic.,2nd Medical Faculty, Charles University, Prague, Czech Republic
| | - Jana Dubisova
- Department of Biomaterials and Biophysical Methods, Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czech Republic.,2nd Medical Faculty, Charles University, Prague, Czech Republic
| | - Irena Vackova
- Department of Biomaterials and Biophysical Methods, Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czech Republic
| | - Ales Hejcl
- Department of Biomaterials and Biophysical Methods, Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czech Republic
| | - Julie Bystronova
- Department of Tissue Engineering, Contipro a.s., Dolni Dobrouc, Czech Republic
| | - Martin Pravda
- Department of Tissue Engineering, Contipro a.s., Dolni Dobrouc, Czech Republic
| | - Ivana Scigalkova
- Department of Tissue Engineering, Contipro a.s., Dolni Dobrouc, Czech Republic
| | - Romana Sulakova
- Department of Tissue Engineering, Contipro a.s., Dolni Dobrouc, Czech Republic
| | - Vladimir Velebny
- Department of Tissue Engineering, Contipro a.s., Dolni Dobrouc, Czech Republic
| | - Lucie Wolfova
- Department of Biomaterials and Biophysical Methods, Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czech Republic.,Department of Tissue Engineering, Contipro a.s., Dolni Dobrouc, Czech Republic
| | - Sarka Kubinova
- Department of Biomaterials and Biophysical Methods, Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czech Republic
| |
Collapse
|
56
|
Bioprinting for Neural Tissue Engineering. Trends Neurosci 2018; 41:31-46. [DOI: 10.1016/j.tins.2017.11.001] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 10/10/2017] [Accepted: 11/06/2017] [Indexed: 12/19/2022]
|
57
|
Jakobsson A, Ottosson M, Zalis MC, O'Carroll D, Johansson UE, Johansson F. Three-dimensional functional human neuronal networks in uncompressed low-density electrospun fiber scaffolds. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:1563-1573. [DOI: 10.1016/j.nano.2016.12.023] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 11/04/2016] [Accepted: 12/30/2016] [Indexed: 11/25/2022]
|
58
|
Sensharma P, Madhumathi G, Jayant RD, Jaiswal AK. Biomaterials and cells for neural tissue engineering: Current choices. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 77:1302-1315. [PMID: 28532008 DOI: 10.1016/j.msec.2017.03.264] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 03/28/2017] [Indexed: 02/06/2023]
Abstract
The treatment of nerve injuries has taken a new dimension with the development of tissue engineering techniques. Prior to tissue engineering, suturing and surgery were the only options for effective treatment. With the advent of tissue engineering, it is now possible to design a scaffold that matches the exact biological and mechanical properties of the tissue. This has led to substantial reduction in the complications posed by surgeries and suturing to the patients. New synthetic and natural polymers are being applied to test their efficiency in generating an ideal scaffold. Along with these, cells and growth factors are also being incorporated to increase the efficiency of a scaffold. Efforts are being made to devise a scaffold that is biodegradable, biocompatible, conducting and immunologically inert. The ultimate goal is to exactly mimic the extracellular matrix in our body, and to elicit a combination of biochemical, topographical and electrical cues via various polymers, cells and growth factors, using which nerve regeneration can efficiently occur.
Collapse
Affiliation(s)
- Prerana Sensharma
- School of Biosciences and Technology, VIT University, Vellore 632014, Tamilnadu, India
| | - G Madhumathi
- School of Biosciences and Technology, VIT University, Vellore 632014, Tamilnadu, India
| | - Rahul D Jayant
- Center for Personalized Nanomedicine, Institute of Neuro-Immune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University (FIU), Miami, FL 33199, USA
| | - Amit K Jaiswal
- Centre for Biomaterials, Cellular and Molecular Theranostics, VIT University, Vellore 632014, Tamilnadu, India.
| |
Collapse
|
59
|
Injectable hydrogels prepared from partially oxidized hyaluronate and glycol chitosan for chondrocyte encapsulation. Carbohydr Polym 2017; 157:1281-1287. [DOI: 10.1016/j.carbpol.2016.11.002] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 10/06/2016] [Accepted: 11/02/2016] [Indexed: 01/16/2023]
|
60
|
Khunmanee S, Jeong Y, Park H. Crosslinking method of hyaluronic-based hydrogel for biomedical applications. J Tissue Eng 2017; 8:2041731417726464. [PMID: 28912946 PMCID: PMC5590699 DOI: 10.1177/2041731417726464] [Citation(s) in RCA: 217] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 07/24/2017] [Indexed: 12/27/2022] Open
Abstract
In the field of tissue engineering, there is a need for advancement beyond conventional scaffolds and preformed hydrogels. Injectable hydrogels have gained wider admiration among researchers as they can be used in minimally invasive surgical procedures. Injectable gels completely fill the defect area and have good permeability and hence are promising biomaterials. The technique can be effectively applied to deliver a wide range of bioactive agents, such as drugs, proteins, growth factors, and even living cells. Hyaluronic acid is a promising candidate for the tissue engineering field because of its unique physicochemical and biological properties. Thus, this review provides an overview of various methods of chemical and physical crosslinking using different linkers that have been investigated to develop the mechanical properties, biodegradation, and biocompatibility of hyaluronic acid as an injectable hydrogel in cell scaffolds, drug delivery systems, and wound healing applications.
Collapse
Affiliation(s)
| | - Younghyen Jeong
- School of Integrative Engineering, Chung-Ang University, Seoul, Korea
| | - Hansoo Park
- School of Integrative Engineering, Chung-Ang University, Seoul, Korea
| |
Collapse
|
61
|
Ahire JJ, Robertson DD, van Reenen AJ, Dicks LMT. Polyethylene oxide (PEO)-hyaluronic acid (HA) nanofibers with kanamycin inhibits the growth of Listeria monocytogenes. Biomed Pharmacother 2016; 86:143-148. [PMID: 27960136 DOI: 10.1016/j.biopha.2016.12.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 12/01/2016] [Accepted: 12/01/2016] [Indexed: 01/13/2023] Open
Abstract
Listeria monocytogenes is well known to cause prosthetic joint infections in immunocompromised patients. In this study, polyethylene oxide (PEO) nanofibers, containing kanamycin and hyaluronic acid (HA), were prepared by electrospinning at a constant electric field of 10kV. PEO nanofibers spun with 0.2% (w/v) HA and 1% (w/v) kanamycin had a smooth, bead-free structure at 30-35% relative humidity. The average diameter of the nanofibers was 83±20nm. Attenuated total reflectance (ATR)-Fourier transform infrared (FTIR) spectroscopy indicated that kanamycin was successfully incorporated into PEO/HA matrix. The presence of kanamycin affects the thermal properties of PEO/HA nanofibers, as shown by differential scanning calorimetry (DSC) and thermogravimetric analyses (TGA). The kanamycin-PEO-HA nanofibers (1mg; 47±3μg kanamycin) inhibited the growth of L. monocytogenes EDGe by 62%, as compared with PEO-HA nanofibers, suggesting that it may be used to coat prosthetic implants to prevent secondary infections.
Collapse
Affiliation(s)
- J J Ahire
- Department of Microbiology, University of Stellenbosch, 7602 Matieland (Stellenbosch), South Africa
| | - D D Robertson
- Department of Chemistry and Polymer Science, University of Stellenbosch, 7602 Matieland (Stellenbosch), South Africa
| | - A J van Reenen
- Department of Chemistry and Polymer Science, University of Stellenbosch, 7602 Matieland (Stellenbosch), South Africa
| | - L M T Dicks
- Department of Microbiology, University of Stellenbosch, 7602 Matieland (Stellenbosch), South Africa.
| |
Collapse
|
62
|
Ponsiglione AM, Russo M, Netti PA, Torino E. Impact of biopolymer matrices on relaxometric properties of contrast agents. Interface Focus 2016; 6:20160061. [PMID: 27920897 PMCID: PMC5071819 DOI: 10.1098/rsfs.2016.0061] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Properties of water molecules at the interface between contrast agents (CAs) for magnetic resonance imaging and macromolecules could have a valuable impact on the effectiveness of metal chelates. Recent studies, indeed, demonstrated that polymer architectures could influence CAs' relaxivity by modifying the correlation times of the metal chelate. However, an understanding of the physico-chemical properties of polymer/CA systems is necessary to improve the efficiency of clinically used CAs, still exhibiting low relaxivity. In this context, we investigate the impact of hyaluronic acid (HA) hydrogels on the relaxometric properties of Gd-DTPA, a clinically used CA, to understand better the determining role of the water, which is crucial for both the relaxation enhancement and the polymer conformation. To this aim, water self-diffusion coefficients, thermodynamic interactions and relaxometric properties of HA/Gd-DTPA solutions are studied through time-domain NMR relaxometry and isothermal titration calorimetry. We observed that the presence of Gd-DTPA could alter the polymer conformation and the behaviour of water molecules at the HA/Gd-DTPA interface, thus modulating the relaxivity of the system. In conclusion, the tunability of hydrogel structures could be exploited to improve magnetic properties of metal chelates, inspiring the development of new CAs as well as metallopolymer complexes with applications as sensors and memory devices.
Collapse
Affiliation(s)
- Alfonso Maria Ponsiglione
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Naples, Italy
- Center for Advanced Biomaterials for Healthcare IIT@CRIB, Istituto Italiano di Tecnologia, Largo Barsanti e Matteucci 53, 80125 Naples, Italy
| | - Maria Russo
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Naples, Italy
- Center for Advanced Biomaterials for Healthcare IIT@CRIB, Istituto Italiano di Tecnologia, Largo Barsanti e Matteucci 53, 80125 Naples, Italy
| | - Paolo Antonio Netti
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Naples, Italy
- Interdisciplinary Research Center on Biomaterials, University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Naples, Italy
- Center for Advanced Biomaterials for Healthcare IIT@CRIB, Istituto Italiano di Tecnologia, Largo Barsanti e Matteucci 53, 80125 Naples, Italy
| | - Enza Torino
- Interdisciplinary Research Center on Biomaterials, University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Naples, Italy
- Center for Advanced Biomaterials for Healthcare IIT@CRIB, Istituto Italiano di Tecnologia, Largo Barsanti e Matteucci 53, 80125 Naples, Italy
| |
Collapse
|
63
|
Stratton S, Shelke NB, Hoshino K, Rudraiah S, Kumbar SG. Bioactive polymeric scaffolds for tissue engineering. Bioact Mater 2016; 1:93-108. [PMID: 28653043 PMCID: PMC5482547 DOI: 10.1016/j.bioactmat.2016.11.001] [Citation(s) in RCA: 230] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 10/27/2016] [Accepted: 11/08/2016] [Indexed: 12/12/2022] Open
Abstract
A variety of engineered scaffolds have been created for tissue engineering using polymers, ceramics and their composites. Biomimicry has been adopted for majority of the three-dimensional (3D) scaffold design both in terms of physicochemical properties, as well as bioactivity for superior tissue regeneration. Scaffolds fabricated via salt leaching, particle sintering, hydrogels and lithography have been successful in promoting cell growth in vitro and tissue regeneration in vivo. Scaffold systems derived from decellularization of whole organs or tissues has been popular due to their assured biocompatibility and bioactivity. Traditional scaffold fabrication techniques often failed to create intricate structures with greater resolution, not reproducible and involved multiple steps. The 3D printing technology overcome several limitations of the traditional techniques and made it easier to adopt several thermoplastics and hydrogels to create micro-nanostructured scaffolds and devices for tissue engineering and drug delivery. This review highlights scaffold fabrication methodologies with a focus on optimizing scaffold performance through the matrix pores, bioactivity and degradation rate to enable tissue regeneration. Review highlights few examples of bioactive scaffold mediated nerve, muscle, tendon/ligament and bone regeneration. Regardless of the efforts required for optimization, a shift in 3D scaffold uses from the laboratory into everyday life is expected in the near future as some of the methods discussed in this review become more streamlined.
Collapse
Affiliation(s)
- Scott Stratton
- Department of Orthopaedic Surgery, UConn Health, Farmington, CT, USA
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA
| | - Namdev B. Shelke
- Department of Orthopaedic Surgery, UConn Health, Farmington, CT, USA
- Institute for Regenerative Engineering, UConn Health, Farmington, CT, USA
| | - Kazunori Hoshino
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA
| | - Swetha Rudraiah
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Saint Joseph, Hartford, CT, 06103, USA
| | - Sangamesh G. Kumbar
- Department of Orthopaedic Surgery, UConn Health, Farmington, CT, USA
- Institute for Regenerative Engineering, UConn Health, Farmington, CT, USA
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA
| |
Collapse
|
64
|
Tarus D, Hamard L, Caraguel F, Wion D, Szarpak-Jankowska A, van der Sanden B, Auzély-Velty R. Design of Hyaluronic Acid Hydrogels to Promote Neurite Outgrowth in Three Dimensions. ACS APPLIED MATERIALS & INTERFACES 2016; 8:25051-25059. [PMID: 27598554 DOI: 10.1021/acsami.6b06446] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A hyaluronic acid (HA)-based extracellular matrix (ECM) platform with independently tunable stiffness and density of cell-adhesive peptide (RGD, arginine-glycine-aspartic acid) that mimics key biochemical and mechanical features of brain matrix has been designed. We demonstrated here its utility in elucidating ECM regulation of neural progenitor cell behavior and neurite outgrowth. The analysis of neurite outgrowth in 3-D by two-photon microscopy showed several important results in the development of these hydrogels. First, the ability of neurites to extend deeply into these soft HA-based matrices even in the absence of cell-adhesive ligand further confirms the potential of HA hydrogels for central nervous system (CNS) regeneration. Second, the behavior of hippocampal neural progenitor cells differed markedly between the hydrogels with a storage modulus of 400 Pa and those with a modulus of 800 Pa. We observed an increased outgrowth and density of neurites in the softest hydrogels (G' = 400 Pa). Interestingly, cells seeded on the surface of the hydrogels functionalized with the RGD ligand experienced an optimum in neurite outgrowth as a function of ligand density. Surprinsingly, neurites preferentially progressed inside the gels in a vertical direction, suggesting that outgrowth is directed by the hydrogel structure. This work may provide design principles for the development of hydrogels to facilitate neuronal regeneration in the adult brain.
Collapse
Affiliation(s)
- Dominte Tarus
- Grenoble Alpes University , Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), 601, rue de la Chimie, BP 53, Grenoble 38041 Cedex 9, France
| | - Lauriane Hamard
- Platform Intravital Microscopy, France Life Imaging, Grenoble Alpes University , INSERM U1205, 17 rue des Martyrs, 38054 Grenoble, France
| | - Flavien Caraguel
- Platform Intravital Microscopy, France Life Imaging, Grenoble Alpes University , INSERM U1205, 17 rue des Martyrs, 38054 Grenoble, France
| | - Didier Wion
- Grenoble Alpes University , INSERM U1205, 17 rue des Martyrs, 38054 Grenoble, France
| | - Anna Szarpak-Jankowska
- Grenoble Alpes University , Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), 601, rue de la Chimie, BP 53, Grenoble 38041 Cedex 9, France
| | - Boudewijn van der Sanden
- Platform Intravital Microscopy, France Life Imaging, Grenoble Alpes University , INSERM U1205, 17 rue des Martyrs, 38054 Grenoble, France
| | - Rachel Auzély-Velty
- Grenoble Alpes University , Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), 601, rue de la Chimie, BP 53, Grenoble 38041 Cedex 9, France
| |
Collapse
|
65
|
Abbott RD, Kimmerling EP, Cairns DM, Kaplan DL. Silk as a Biomaterial to Support Long-Term Three-Dimensional Tissue Cultures. ACS APPLIED MATERIALS & INTERFACES 2016; 8:21861-21868. [PMID: 26849288 DOI: 10.1021/acsami.5b12114] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Tissue engineering has broad and diverse impacts on a variety of different applications from tissue regeneration to drug screening. While two-dimensional (2-D) cell culture platforms are suitable for tissue interfaces where planar surfaces are relevant, three dimensional (3-D) tissue models have enhanced relevance and sustainability over 2-D devices. The improvements between 2-D and 3-D functions and sustainability are related to the limitations of 2-D systems to support proper cellular morphology and signaling over time, resulting in cell overgrowth or changes in viability. For sustainable (long-term) cultures, 3-D silk protein scaffolds provide biocompatibility, porous features for transport, robust yet tunable mechanical properties, retain size and open porous structures for extended time frames due to slow proteolytic biodegradation, avoid specific cell signaling, and require no chemical cross-linking. Silk degradation can be extended for months to years without premature collapse of structures (that would result in necrosis) to support cell interactions during slow remodeling toward native tissue. Silk can also be fabricated into different material formats, such as hydrogels, tubes, sponges, composites, fibers, microspheres, and thin films, providing versatile platforms and interfaces for a variety of different applications. For sustainable tissue engineering applications, many formats have been used, including silk ionmer hydrogels that have been cultured for up to 8 weeks and porous silk scaffolds that have been cultured for up to 6 months. In this review, we highlight some of our tissue engineering work related to long-term in vitro cultures. While each tissue engineered system (adipose tissue, cortical brain tissue, intestine, kidney tissue, bone) is unique, they all use silk biomaterials as a base scaffolding material to achieve sustainable cultivation. Sustainability is important for studies that extend past a few weeks to study acute and chronic impacts of treatments, disease models, and other related applications in the field of tissue engineering.
Collapse
Affiliation(s)
- Rosalyn D Abbott
- Tufts University , 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Erica P Kimmerling
- Tufts University , 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Dana M Cairns
- Tufts University , 4 Colby Street, Medford, Massachusetts 02155, United States
| | - David L Kaplan
- Tufts University , 4 Colby Street, Medford, Massachusetts 02155, United States
| |
Collapse
|
66
|
Giménez A, Uriarte JJ, Vieyra J, Navajas D, Alcaraz J. Elastic properties of hydrogels and decellularized tissue sections used in mechanobiology studies probed by atomic force microscopy. Microsc Res Tech 2016; 80:85-96. [PMID: 27535539 DOI: 10.1002/jemt.22740] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 07/15/2016] [Accepted: 07/19/2016] [Indexed: 12/26/2022]
Abstract
The increasing recognition that tissue elasticity is an important regulator of cell behavior in normal and pathologic conditions such as fibrosis and cancer has driven the development of cell culture substrata with tunable elasticity. Such development has urged the need to quantify the elastic properties of these cell culture substrata particularly at the nanometer scale, since this is the relevant length scale involved in cell-extracellular matrix (ECM) mechanical interactions. To address this need, we have exploited the versatility of atomic force microscopy to quantify the elastic properties of a variety of cell culture substrata used in mechanobiology studies, including floating collagen gels, ECM-coated polyacrylamide gels, and decellularized tissue sections. In this review we summarize major findings in this field from our group within the context of the state-of-the-art in the field, and provide a critical discussion on the applicability and complementarity of currently available cell culture assays with tunable elasticity. In addition, we briefly describe how the limitations of these assays provide opportunities for future research, which is expected to continue expanding our understanding of the mechanobiological aspects that support both normal and diseased conditions. Microsc. Res. Tech. 80:85-96, 2017. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Alícia Giménez
- Unitat de Biofísica i Bioenginyeria, Departament de Biomedicina, Facultat de Medicina, Universitat de Barcelona, Barcelona, 08036, Spain
| | - Juan José Uriarte
- Unitat de Biofísica i Bioenginyeria, Departament de Biomedicina, Facultat de Medicina, Universitat de Barcelona, Barcelona, 08036, Spain
| | - Joan Vieyra
- Unitat de Biofísica i Bioenginyeria, Departament de Biomedicina, Facultat de Medicina, Universitat de Barcelona, Barcelona, 08036, Spain
| | - Daniel Navajas
- Unitat de Biofísica i Bioenginyeria, Departament de Biomedicina, Facultat de Medicina, Universitat de Barcelona, Barcelona, 08036, Spain.,Institut de Bioenginyeria de Catalunya (IBEC), Barcelona, 08028, Spain.,CIBER de Enfermedades Respiratorias (CIBERES), Madrid, 28029, Spain
| | - Jordi Alcaraz
- Unitat de Biofísica i Bioenginyeria, Departament de Biomedicina, Facultat de Medicina, Universitat de Barcelona, Barcelona, 08036, Spain.,CIBER de Enfermedades Respiratorias (CIBERES), Madrid, 28029, Spain
| |
Collapse
|
67
|
Advances in peripheral nervous system regenerative therapeutic strategies: A biomaterials approach. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 65:425-32. [DOI: 10.1016/j.msec.2016.04.048] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 02/20/2016] [Accepted: 04/14/2016] [Indexed: 01/02/2023]
|
68
|
Kushchayev SV, Giers MB, Hom Eng D, Martirosyan NL, Eschbacher JM, Mortazavi MM, Theodore N, Panitch A, Preul MC. Hyaluronic acid scaffold has a neuroprotective effect in hemisection spinal cord injury. J Neurosurg Spine 2016; 25:114-24. [PMID: 26943251 DOI: 10.3171/2015.9.spine15628] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE
Spinal cord injury occurs in 2 phases. The initial trauma is followed by inflammation that leads to fibrous scar tissue, glial scarring, and cavity formation. Scarring causes further axon death around and above the injury. A reduction in secondary injury could lead to functional improvement. In this study, hyaluronic acid (HA) hydrogels were implanted into the gap formed in the hemisected spinal cord of Sprague-Dawley rats in an attempt to attenuate damage and regenerate tissue.
METHODS
A T-10 hemisection spinal cord injury was created in adult male Sprague-Dawley rats; the rats were assigned to a sham, control (phosphate-buffered saline), or HA hydrogel–treated group. One cohort of 23 animals was followed for 12 weeks and underwent weekly behavioral assessments. At 12 weeks, retrograde tracing was performed by injecting Fluoro-Gold in the left L-2 gray matter. At 14 weeks, the animals were killed. The volume of the lesion and the number of cells labeled from retrograde tracing were calculated. Animals in a separate cohort were killed at 8 or 16 weeks and perfused for immunohistochemical analysis and transmission electron microscopy. Samples were stained using H & E, neurofilament stain (neurons and axons), silver stain (disrupted axons), glial fibrillary acidic protein stain (astrocytes), and Iba1 stain (mononuclear cells).
RESULTS
The lesions were significantly smaller in size and there were more retrograde-labeled cells in the red nuclei of the HA hydrogel–treated rats than in those of the controls; however, the behavioral assessments revealed no differences between the groups. The immunohistochemical analyses revealed decreased fibrous scarring and increased retention of organized intact axonal tissue in the HA hydrogel–treated group. There was a decreased presence of inflammatory cells in the HA hydrogel–treated group. No axonal or neuronal regeneration was observed.
CONCLUSIONS
The results of these experiments show that HA hydrogel had a neuroprotective effect on the spinal cord by decreasing the magnitude of secondary injury after a lacerating spinal cord injury. Although regeneration and behavioral improvement were not observed, the reduction in disorganized scar tissue and the retention of neurons near and above the lesion are important for future regenerative efforts. In addition, this gel would be useful as the base substrate in the development of a more complex scaffold.
Collapse
Affiliation(s)
- Sergiy V. Kushchayev
- 1Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix
| | - Morgan B. Giers
- 1Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix
| | - Doris Hom Eng
- 2School of Biological and Health Systems Engineering, Arizona State University, Tempe, Arizona; and
| | - Nikolay L. Martirosyan
- 1Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix
| | - Jennifer M. Eschbacher
- 1Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix
| | - Martin M. Mortazavi
- 1Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix
| | - Nicholas Theodore
- 1Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix
| | - Alyssa Panitch
- 3Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana
| | - Mark C. Preul
- 1Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix
| |
Collapse
|
69
|
Novel enzymatically cross-linked hyaluronan hydrogels support the formation of 3D neuronal networks. Biomaterials 2016; 99:47-55. [PMID: 27209262 DOI: 10.1016/j.biomaterials.2016.04.036] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 04/21/2016] [Accepted: 04/26/2016] [Indexed: 11/23/2022]
Abstract
Hyaluronan (HA) is an essential component of the central nervous system's extracellular matrix and its high molecular weight (MW) form has anti-inflammatory and anti-fibrotic properties relevant for regenerative medicine. Here, we introduce a new hydrogel based on high MW HA which is cross-linked using the transglutaminase (TG) activity of the activated blood coagulation factor XIII (FXIIIa). These HA-TG gels have significant advantages for neural tissue engineering compared to previous HA gels. Due to their chemical inertness in the absence of FXIIIa, the material can be stored long-term, is stable in solution, and shows no cytotoxicity. The gelation is completely cell-friendly due to the specificity of the enzyme and the gelation rate can be tuned from seconds to hours at physiological pH and independently of stiffness. The gels are injectable, and attach covalently to fibrinogen and fibrin, two common bioactive components in in vitro tissue engineering, as well as proteins present in vivo, allowing the gels to covalently bind to brain or spinal cord defects. These optimal chemical and bioactive properties of HA-TG gels enabled the formation of 3D neuronal cultures of unprecedented performance, showing fast neurite outgrowth, axonal and dendritic speciation, strong synaptic connectivity in 3D networks, and rapidly-occurring and long-lasting coordinated electrical activity.
Collapse
|
70
|
Hemshekhar M, Thushara RM, Chandranayaka S, Sherman LS, Kemparaju K, Girish KS. Emerging roles of hyaluronic acid bioscaffolds in tissue engineering and regenerative medicine. Int J Biol Macromol 2016; 86:917-28. [DOI: 10.1016/j.ijbiomac.2016.02.032] [Citation(s) in RCA: 149] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Revised: 02/09/2016] [Accepted: 02/11/2016] [Indexed: 12/16/2022]
|
71
|
Vilariño-Feltrer G, Martínez-Ramos C, Monleón-de-la-Fuente A, Vallés-Lluch A, Moratal D, Barcia Albacar JA, Monleón Pradas M. Schwann-cell cylinders grown inside hyaluronic-acid tubular scaffolds with gradient porosity. Acta Biomater 2016; 30:199-211. [PMID: 26518102 DOI: 10.1016/j.actbio.2015.10.040] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 10/21/2015] [Accepted: 10/26/2015] [Indexed: 11/19/2022]
Abstract
Cell transplantation therapies in the nervous system are frequently hampered by glial scarring and cell drain from the damaged site, among others. To improve this situation, new biomaterials may be of help. Here, novel single-channel tubular conduits based on hyaluronic acid (HA) with and without poly-l-lactide acid fibers in their lumen were fabricated. Rat Schwann cells were seeded within the conduits and cultured for 10days. The conduits possessed a three-layered porous structure that impeded the leakage of the cells seeded in their interior and made them impervious to cell invasion from the exterior, while allowing free transport of nutrients and other molecules needed for cell survival. The channel's surface acted as a template for the formation of a cylindrical sheath-like tapestry of Schwann cells continuously spanning the whole length of the lumen. Schwann-cell tubes having a diameter of around 0.5mm and variable lengths can thus be generated. This structure is not found in nature and represents a truly engineered tissue, the outcome of the specific cell-material interactions. The conduits might be useful to sustain and protect cells for transplantation, and the biohybrids here described, together with neuronal precursors, might be of help in building bridges across significant distances in the central and peripheral nervous system. STATEMENT OF SIGNIFICANCE The paper entitled "Schwann-cell cylinders grown inside hyaluronic-acid tubular scaffolds with gradient porosity" reports on the development of a novel tubular scaffold and on how this scaffold acts on Schwann cells seeded in its interior as a template to produce macroscopic hollow continuous cylinders of tightly joined Schwann cells. This cellular structure is not found in nature and represents a truly engineered novel tissue, which obtains as a consequence of the specific cell-material interactions within the scaffold.
Collapse
Affiliation(s)
- G Vilariño-Feltrer
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - C Martínez-Ramos
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - A Monleón-de-la-Fuente
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - A Vallés-Lluch
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - D Moratal
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain
| | - J A Barcia Albacar
- Servicio de Neurocirugía, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), C/ Profesor Martín Lagos, S/N, Madrid 28040, Spain
| | - M Monleón Pradas
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Cno. de Vera s/n, 46022 Valencia, Spain.
| |
Collapse
|
72
|
Lim HJ, Perera TH, Wilems TS, Ghosh S, Zheng YY, Azhdarinia A, Cao Q, Smith Callahan LA. Response to di-functionalized hyaluronic acid with orthogonal chemistry grafting at independent modification sites in rodent models of neural differentiation and spinal cord injury. J Mater Chem B 2016; 4:6865-6875. [DOI: 10.1039/c6tb01906d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Hyaluronic acid functionalized with two orthogonal chemistries at different targets expedites neural maturation in vitro, while reducing inflammation in vivo.
Collapse
Affiliation(s)
- Hyun Ju Lim
- Vivian L. Smith Department of Neurosurgery
- McGovern Medical School at University of Texas Health Science Center at Houston
- Houston
- USA
- Center for Stem Cell and Regenerative Medicine
| | - T. Hiran Perera
- Vivian L. Smith Department of Neurosurgery
- McGovern Medical School at University of Texas Health Science Center at Houston
- Houston
- USA
- Center for Stem Cell and Regenerative Medicine
| | - Thomas S. Wilems
- Vivian L. Smith Department of Neurosurgery
- McGovern Medical School at University of Texas Health Science Center at Houston
- Houston
- USA
- Center for Stem Cell and Regenerative Medicine
| | - Sukhen Ghosh
- Center for Molecular Imaging
- Brown Foundation Institute of Molecular Medicine
- University of Texas Health Science Center at Houston
- Houston
- USA
| | - Yi-Yan Zheng
- Vivian L. Smith Department of Neurosurgery
- McGovern Medical School at University of Texas Health Science Center at Houston
- Houston
- USA
- Center for Stem Cell and Regenerative Medicine
| | - Ali Azhdarinia
- Center for Molecular Imaging
- Brown Foundation Institute of Molecular Medicine
- University of Texas Health Science Center at Houston
- Houston
- USA
| | - Qilin Cao
- Vivian L. Smith Department of Neurosurgery
- McGovern Medical School at University of Texas Health Science Center at Houston
- Houston
- USA
- Center for Stem Cell and Regenerative Medicine
| | - Laura A. Smith Callahan
- Vivian L. Smith Department of Neurosurgery
- McGovern Medical School at University of Texas Health Science Center at Houston
- Houston
- USA
- Center for Stem Cell and Regenerative Medicine
| |
Collapse
|
73
|
Yao S, Liu X, He J, Wang X, Wang Y, Cui FZ. Ordered self-assembled monolayers terminated with different chemical functional groups direct neural stem cell linage behaviours. Biomed Mater 2015; 11:014107. [DOI: 10.1088/1748-6041/11/1/014107] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
74
|
Jones DR, Marchant RE, von Recum H, Sen Gupta A, Kottke-Marchant K. Photoinitiator-free synthesis of endothelial cell-adhesive and enzymatically degradable hydrogels. Acta Biomater 2015; 13:52-60. [PMID: 25462848 PMCID: PMC4416228 DOI: 10.1016/j.actbio.2014.11.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 10/07/2014] [Accepted: 11/05/2014] [Indexed: 12/13/2022]
Abstract
We report on a photoinitiator-free synthetic method of incorporating bioactivity into poly(ethylene glycol) (PEG) hydrogels in order to control physical properties, enzymatic biodegradability and cell-specific adhesiveness of the polymer network, while eliminating the need for UV-mediated photopolymerization. To accomplish this, hydrogel networks were polymerized using Michael addition with four-arm PEG acrylate (10 kDa), using a collagenase-sensitive peptide (CSP) as a crosslinker, and introducing an endothelial cell-adhesive peptide either terminally (RGD) or attached to the crosslinking peptide sequence (CSP-RGD). The efficiency of the Michael addition reactions were determined by nuclear magnetic resonance and Ellman's assay. Successful decoupling of cell adhesivity and physical properties was demonstrated by quantifying and comparing the swelling ratios and Young's moduli of various hydrogel formulations. Degradation profiles were established by incubating functionalized hydrogels in collagenase solutions (0.0-1.0 μg ml(-1)), demonstrating that functionalized hydrogels degraded at a rate dependent upon collagenase concentration. Moreover, it was shown that the degradation rate was independent of CSP-RGD concentration. Cell attachment and proliferation on functionalized hydrogels were compared for various RGD concentrations, providing evidence that cell attachment and proliferation were directly related to relative amounts of the CSP-RGD combination peptide. An increase in cell viability was achieved using Michael addition techniques when compared to UV polymerization, and was assessed by a LIVE/DEAD fluorescence assay. This photoinitiator-free method shows promise in creating hydrogel-based tissue engineering scaffolds allow for decoupled cell adhesivity and physical properties and that render greater cell viability.
Collapse
Affiliation(s)
- Derek R Jones
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Roger E Marchant
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Horst von Recum
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Anirban Sen Gupta
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Kandice Kottke-Marchant
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA; Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH 44195, USA.
| |
Collapse
|
75
|
Mattei TA, Rehman AA. Technological developments and future perspectives on graphene-based metamaterials: a primer for neurosurgeons. Neurosurgery 2014; 74:499-516; discussion 516. [PMID: 24476906 DOI: 10.1227/neu.0000000000000302] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Graphene, a monolayer atomic-scale honeycomb lattice of carbon atoms, has been considered the greatest revolution in metamaterials research in the past 5 years. Its developers were awarded the Nobel Prize in Physics in 2010, and massive funding has been directed to graphene-based experimental research in the last years. For instance, an international scientific collaboration has recently received a €1 billion grant from the European Flagship Initiative, the largest amount of financial resources ever granted for a single research project in the history of modern science. Because of graphene's unique optical, thermal, mechanical, electronic, and quantum properties, the incorporation of graphene-based metamaterials to biomedical applications is expected to lead to major technological breakthroughs in the next few decades. Current frontline research in graphene technology includes the development of high-performance, lightweight, and malleable electronic devices, new optical modulators, ultracapacitors, molecular biodevices, organic photovoltaic cells, lithium-ion microbatteries, frequency multipliers, quantum dots, and integrated circuits, just to mention a few. With such advances, graphene technology is expected to significantly impact several areas of neurosurgery, including neuro-oncology, neurointensive care, neuroregeneration research, peripheral nerve surgery, functional neurosurgery, and spine surgery. In this topic review, the authors provide a basic introduction to the main electrophysical properties of graphene. Additionally, future perspectives of ongoing frontline investigations on this new metamaterial are discussed, with special emphasis on those research fields that are expected to most substantially impact experimental and clinical neurosurgery in the near future.
Collapse
Affiliation(s)
- Tobias A Mattei
- *Invision Health Brain and Spine Center, Williamsville, New York; ‡University of Illinois College of Medicine at Peoria, Peoria, Illinois
| | | |
Collapse
|
76
|
McMurtrey RJ. Patterned and functionalized nanofiber scaffolds in three-dimensional hydrogel constructs enhance neurite outgrowth and directional control. J Neural Eng 2014; 11:066009. [PMID: 25358624 DOI: 10.1088/1741-2560/11/6/066009] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
OBJECTIVE Neural tissue engineering holds incredible potential to restore functional capabilities to damaged neural tissue. It was hypothesized that patterned and functionalized nanofiber scaffolds could control neurite direction and enhance neurite outgrowth. APPROACH A method of creating aligned electrospun nanofibers was implemented and fiber characteristics were analyzed using environmental scanning electron microscopy. Nanofibers were composed of polycaprolactone (PCL) polymer, PCL mixed with gelatin, or PCL with a laminin coating. Three-dimensional hydrogels were then integrated with embedded aligned nanofibers to support neuronal cell cultures. Microscopic images were captured at high-resolution in single and multi-focal planes with eGFP-expressing neuronal SH-SY5Y cells in a fluorescent channel and nanofiber scaffolding in another channel. Neuronal morphology and neurite tracking of nanofibers were then analyzed in detail. MAIN RESULTS Aligned nanofibers were shown to enable significant control over the direction of neurite outgrowth in both two-dimensional (2D) and three-dimensional (3D) neuronal cultures. Laminin-functionalized nanofibers in 3D hyaluronic acid (HA) hydrogels enabled significant alignment of neurites with nanofibers, enabled significant neurite tracking of nanofibers, and significantly increased the distance over which neurites could extend. Specifically, the average length of neurites per cell in 3D HA constructs with laminin-functionalized nanofibers increased by 66% compared to the same laminin fibers on 2D laminin surfaces, increased by 59% compared to 2D laminin-coated surface without fibers, and increased by 1052% compared to HA constructs without fibers. Laminin functionalization of fibers also doubled average neurite length over plain PCL fibers in the same 3D HA constructs. In addition, neurites also demonstrated tracking directly along the fibers, with 66% of neurite lengths directly tracking laminin-coated fibers in 3D HA constructs, which was a 65% relative increase in neurite tracking compared to plain PCL fibers in the same 3D HA constructs and a 213% relative increase over laminin-coated fibers on 2D laminin-coated surfaces. SIGNIFICANCE This work demonstrates the ability to create unique 3D neural tissue constructs using a combined system of hydrogel and nanofiber scaffolding. Importantly, patterned and biofunctionalized nanofiber scaffolds that can control direction and increase length of neurite outgrowth in three-dimensions hold much potential for neural tissue engineering. This approach offers advancements in the development of implantable neural tissue constructs that enable control of neural development and reproduction of neuroanatomical pathways, with the ultimate goal being the achievement of functional neural regeneration.
Collapse
Affiliation(s)
- Richard J McMurtrey
- Institute of Biomedical Engineering, Department of Engineering Science, Old Road Campus Research Building, University of Oxford, Oxford OX3 7DQ, UK. Institute of Neural Regeneration and Tissue Engineering, Highland, UT 84003, US
| |
Collapse
|
77
|
Jeffery AF, Churchward MA, Mushahwar VK, Todd KG, Elias AL. Hyaluronic Acid-Based 3D Culture Model for In Vitro Testing of Electrode Biocompatibility. Biomacromolecules 2014; 15:2157-65. [DOI: 10.1021/bm500318d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Andrea F. Jeffery
- Chemical
and Materials Engineering, University of Alberta, Edmonton, AB T6G 2V4, Canada
- Alberta Innovates-Health
Solutions Interdisciplinary Team in Smart Neural Prostheses (Project
SMART), University of Alberta, AB, Canada
| | - Matthew A. Churchward
- Department
of Psychiatry, University of Alberta, Edmonton, AB T6G 2G3, Canada
- Alberta Innovates-Health
Solutions Interdisciplinary Team in Smart Neural Prostheses (Project
SMART), University of Alberta, AB, Canada
| | - Vivian K. Mushahwar
- Division
of Physical Medicine and Rehabilitation, University of Alberta, Edmonton, AB T6G 2E1, Canada
- Centre
for Neuroscience, University of Alberta, Edmonton, AB T6G 2E1, Canada
- Alberta Innovates-Health
Solutions Interdisciplinary Team in Smart Neural Prostheses (Project
SMART), University of Alberta, AB, Canada
| | - Kathryn G. Todd
- Department
of Psychiatry, University of Alberta, Edmonton, AB T6G 2G3, Canada
- Centre
for Neuroscience, University of Alberta, Edmonton, AB T6G 2E1, Canada
- Alberta Innovates-Health
Solutions Interdisciplinary Team in Smart Neural Prostheses (Project
SMART), University of Alberta, AB, Canada
| | - Anastasia L. Elias
- Chemical
and Materials Engineering, University of Alberta, Edmonton, AB T6G 2V4, Canada
- Alberta Innovates-Health
Solutions Interdisciplinary Team in Smart Neural Prostheses (Project
SMART), University of Alberta, AB, Canada
| |
Collapse
|
78
|
Dautriche CN, Xie Y, Sharfstein ST. Walking through trabecular meshwork biology: Toward engineering design of outflow physiology. Biotechnol Adv 2014; 32:971-83. [PMID: 24806891 DOI: 10.1016/j.biotechadv.2014.04.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 04/22/2014] [Accepted: 04/29/2014] [Indexed: 01/23/2023]
Abstract
According to the World Health Organization, glaucoma remains the second leading cause of blindness in the world. Glaucoma belongs to a group of optic neuropathies that is characterized by chronic degeneration of the optic nerve along with its supporting glia and vasculature. Despite significant advances in the field, there is no available cure for glaucoma. The trabecular meshwork has been implicated as the primary site for regulation of intraocular pressure, the only known modifiable factor in glaucoma development. In this review, we describe the current models for glaucoma studies, primary culture, anterior eye segments, and animal studies and their limitations. These models, especially anterior eye segments and animal tissues, often require careful interpretation given the inter-species variation and are cumbersome and expensive. The lack of an available in vitro 3D model to study trabecular meshwork cells and detailed mechanisms of their regulation of intraocular pressure has limited progress in the field of glaucoma research. In this paper, we review the current status of knowledge of the trabecular meshwork and how the current advances in tissue engineering techniques might be applied in an effort to engineer a synthetic trabecular meshwork as a 3D in vitro model to further advance glaucoma research. In addition, we describe strategies for selection and design of biomaterials for scaffold fabrication as well as extracellular matrix components to mimic and support the trabecular architecture. We also discuss possible uses for a bioengineered trabecular meshwork for both developing a fundamental understanding of trabecular meshwork biology as well as high-throughput screening of glaucoma drugs.
Collapse
Affiliation(s)
- Cula N Dautriche
- SUNY College of Nanoscale Science and Engineering, 257 Fuller Road, Albany, NY 12203, USA
| | - Yubing Xie
- SUNY College of Nanoscale Science and Engineering, 257 Fuller Road, Albany, NY 12203, USA
| | - Susan T Sharfstein
- SUNY College of Nanoscale Science and Engineering, 257 Fuller Road, Albany, NY 12203, USA.
| |
Collapse
|
79
|
Zhu W, O'Brien C, O'Brien JR, Zhang LG. 3D nano/microfabrication techniques and nanobiomaterials for neural tissue regeneration. Nanomedicine (Lond) 2014; 9:859-75. [DOI: 10.2217/nnm.14.36] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Injuries of the nervous system occur commonly among people of many different ages and backgrounds. Currently, there are no effective strategies to improve neural regeneration; however, tissue engineering provides a promising avenue for regeneration of many tissue types, including the neural context. Functional nerve conduits derived from tissue engineering techniques present bioengineered 3D artificial substitutes for implantation and rehabilitation of injured nerves. In particular, nanotechnology as a versatile vehicle to create biomimetic nanostructured tissue-engineered neural scaffolds provides great potential for the development of innovative and successful nerve grafts. Nanostructured conduits derived from traditional and novel tissue engineering techniques have been shown to be superior for successful neural function construction due to a high degree of biomimetic character. In this paper, we will focus on current progress in developing 3D nano/microstructured neural scaffolds via electrospinning, emerging 3D printing and self-assembly techniques, nanobiomaterials and bioactive cues for enhanced neural tissue regeneration.
Collapse
Affiliation(s)
- Wei Zhu
- Department of Mechanical & Aerospace Engineering, The George Washington University, Washington, DC 20052, USA
| | - Christopher O'Brien
- Department of Mechanical & Aerospace Engineering, The George Washington University, Washington, DC 20052, USA
| | - Joseph R O'Brien
- Departments of Orthopedic Surgery & Neurological Surgery, The George Washington University, Washington, DC 20052, USA
| | - Lijie Grace Zhang
- Department of Mechanical & Aerospace Engineering, The George Washington University, Washington, DC 20052, USA
- Department of Medicine, The George Washington University, Washington, DC 20052, USA
| |
Collapse
|
80
|
Abstract
The consequence of numerous neurological disorders is the significant loss of neural cells, which further results in multilevel dysfunction or severe functional deficits. The extracellular matrix (ECM) is of tremendous importance for neural regeneration mediating ambivalent functions: ECM serves as a growth-promoting substrate for neurons but, on the other hand, is a major constituent of the inhibitory scar, which results from traumatic injuries of the central nervous system. Therefore, cell and tissue replacement strategies on the basis of ECM mimetics are very promising therapeutic interventions. Numerous synthetic and natural materials have proven effective both in vitro and in vivo. The closer a material's physicochemical and molecular properties are to the original extracellular matrix, the more promising its effectiveness may be. Relevant factors that need to be taken into account when designing such materials for neural repair relate to receptor-mediated cell-matrix interactions, which are dependent on chemical and mechanical sensing. This chapter outlines important characteristics of natural and synthetic ECM materials (scaffolds) and provides an overview of recent advances in design and application of ECM materials for neural regeneration, both in therapeutic applications and in basic biological research.
Collapse
Affiliation(s)
- Veronica Estrada
- Molecular Neurobiology Laboratory, Department of Neurology, Heinrich-Heine-University Medical Center Düsseldorf, Düsseldorf, Germany
| | - Ayse Tekinay
- UNAM-National Nanotechnology Research Center, Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, Turkey
| | - Hans Werner Müller
- Molecular Neurobiology Laboratory, Department of Neurology, Heinrich-Heine-University Medical Center Düsseldorf, Düsseldorf, Germany.
| |
Collapse
|
81
|
Porous chitosan-hyaluronic acid scaffolds as a mimic of glioblastoma microenvironment ECM. Biomaterials 2013; 34:10143-50. [PMID: 24075410 DOI: 10.1016/j.biomaterials.2013.09.034] [Citation(s) in RCA: 156] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Accepted: 09/10/2013] [Indexed: 12/12/2022]
Abstract
Cancer therapeutics are developed through extensive screening; however, many therapeutics evaluated with 2D in vitro cultures during pre-clinical trials suffer from lower efficacy in patients. Replicating the in vivo tumor microenvironment in vitro with three-dimensional (3D) porous scaffolds offers the possibility of generating more predictive pre-clinical models to enhance cancer treatment efficacy. We developed a chitosan and hyaluronic acid (HA) polyelectrolyte complex 3D porous scaffold and evaluated its physical properties. Chitosan-HA (C-HA) scaffolds had a highly porous network. C-HA scaffolds were compared to 2D surfaces for in vitro culture of U-118 MG human glioblastoma (GBM) cells. C-HA scaffold cultures promoted tumor spheroid formation and increased stem-like properties of GBM cells as evidenced by the upregulation of CD44, Nestin, Musashi-1, GFAP, and HIF-1α as compared with 2D cultures. Additionally, the invasiveness of GBM cells cultured in C-HA scaffolds was significantly enhanced compared to those grown in 2D cultures. C-HA scaffold cultures were also more resistant to chemotherapy drugs, which corresponded to the increased expression of ABCG2 drug efflux transporter. These findings suggest that C-HA scaffolds offer promise as an in vitro GBM platform for study and screening of novel cancer therapeutics.
Collapse
|
82
|
Vetrik M, Pradny M, Kobera L, Slouf M, Rabyk M, Pospisilova A, Stepanek P, Hruby M. Biopolymer-based degradable nanofibres from renewable resources produced by freeze-drying. RSC Adv 2013. [DOI: 10.1039/c3ra42647e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
|
83
|
Collins MN, Birkinshaw C. Hyaluronic acid based scaffolds for tissue engineering--a review. Carbohydr Polym 2012; 92:1262-79. [PMID: 23399155 DOI: 10.1016/j.carbpol.2012.10.028] [Citation(s) in RCA: 662] [Impact Index Per Article: 55.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 10/08/2012] [Accepted: 10/10/2012] [Indexed: 12/22/2022]
Abstract
This review focuses on hyaluronic acid (HA) tissue scaffolding materials. Scaffolds are defined in terms of formation mechanisms and mode of action. Solution properties are discussed as an understanding of the hydrodynamics of HA is fundamental in optimising the subsequent modification and the chemistries behind important tissue engineering applications that are emerging from recent research on this increasingly valuable carbohydrate polymer are described. Key scaffold characteristics such as mechanical, biological function and degradation are discussed. The latest technologies behind scaffold processing are assessed and the applications of HA based scaffolds are discussed.
Collapse
|