1
|
Fasciano S, Wheba A, Ddamulira C, Wang S. Recent advances in scaffolding biomaterials for cultivated meat. BIOMATERIALS ADVANCES 2024; 162:213897. [PMID: 38810509 DOI: 10.1016/j.bioadv.2024.213897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 02/07/2024] [Accepted: 05/15/2024] [Indexed: 05/31/2024]
Abstract
The emergence of cultivated meat provides a sustainable and ethical alternative to traditional animal agriculture, highlighting its increasing importance in the food industry. Biomaterial scaffolds are critical components in cultivated meat production for enabling cell adhesion, proliferation, differentiation, and orientation. While there's extensive research on scaffolding biomaterials, applying them to cultivated meat production poses distinct challenges, with each material offering its own set of advantages and disadvantages. This review summarizes the most recent scaffolding biomaterials used in the last five years for cell-cultured meat, detailing their respective advantages and disadvantages. We suggest future research directions and provide recommendations for scaffolds that support scalable, cost-effective, and safe high-quality meat production. Additionally, we highlight commercial challenges cultivated meat faces, encompassing bioreactor design, cell culture mediums, and regulatory and food safety issues. In summary, this review provides a comprehensive guide and valuable insights for researchers and companies in the field of cultivated meat production.
Collapse
Affiliation(s)
- Samantha Fasciano
- Department of Cellular and Molecular Biology, University of New Haven, West Haven, CT, 06516, USA
| | - Anas Wheba
- Department of Chemistry, Chemical and Biomedical Engineering, University of New Haven, West Haven, CT, 06516, USA
| | - Christopher Ddamulira
- Department of Chemistry, Chemical and Biomedical Engineering, University of New Haven, West Haven, CT, 06516, USA
| | - Shue Wang
- Department of Chemistry, Chemical and Biomedical Engineering, University of New Haven, West Haven, CT, 06516, USA.
| |
Collapse
|
2
|
Shi S, Ou X, Cheng D. How Advancing is Peripheral Nerve Regeneration Using Nanofiber Scaffolds? A Comprehensive Review of the Literature. Int J Nanomedicine 2023; 18:6763-6779. [PMID: 38026517 PMCID: PMC10657550 DOI: 10.2147/ijn.s436871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 11/02/2023] [Indexed: 12/01/2023] Open
Abstract
Peripheral nerve injuries present significant challenges in regenerative medicine, primarily due to inherent limitations in the body's natural healing processes. In response to these challenges and with the aim of enhancing peripheral nerve regeneration, nanofiber scaffolds have emerged as a promising and advanced intervention. However, a deeper understanding of the underlying mechanistic foundations that drive the favorable contributions of nanofiber scaffolds to nerve regeneration is essential. In this comprehensive review, we make an exploration of the latent potential of nanofiber scaffolds in augmenting peripheral nerve regeneration. This exploration includes a detailed introduction to the fabrication methods of nanofibers, an analysis of the intricate interactions between these scaffolds and cellular entities, an examination of strategies related to the controlled release of bioactive agents, an assessment of the prospects for clinical translation, an exploration of emerging trends, and thorough considerations regarding biocompatibility and safety. By comprehensively elucidating the intricate structural attributes and multifaceted functional capacities inherent in nanofiber scaffolds, we aim to offer a prospective and effective strategy for the treatment of peripheral nerve injury.
Collapse
Affiliation(s)
- Shaoyan Shi
- Department of Hand Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an Honghui Hospital North District, Xi’an, Shaanxi, 710000, People’s Republic of China
| | - Xuehai Ou
- Department of Hand Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an Honghui Hospital North District, Xi’an, Shaanxi, 710000, People’s Republic of China
| | - Deliang Cheng
- Department of Hand Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an Honghui Hospital North District, Xi’an, Shaanxi, 710000, People’s Republic of China
| |
Collapse
|
3
|
Babaliari E, Ranella A, Stratakis E. Microfluidic Systems for Neural Cell Studies. Bioengineering (Basel) 2023; 10:902. [PMID: 37627787 PMCID: PMC10451731 DOI: 10.3390/bioengineering10080902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/05/2023] [Accepted: 07/25/2023] [Indexed: 08/27/2023] Open
Abstract
Whereas the axons of the peripheral nervous system (PNS) spontaneously regenerate after an injury, the occurring regeneration is rarely successful because axons are usually directed by inappropriate cues. Therefore, finding successful ways to guide neurite outgrowth, in vitro, is essential for neurogenesis. Microfluidic systems reflect more appropriately the in vivo environment of cells in tissues such as the normal fluid flow within the body, consistent nutrient delivery, effective waste removal, and mechanical stimulation due to fluid shear forces. At the same time, it has been well reported that topography affects neuronal outgrowth, orientation, and differentiation. In this review, we demonstrate how topography and microfluidic flow affect neuronal behavior, either separately or in synergy, and highlight the efficacy of microfluidic systems in promoting neuronal outgrowth.
Collapse
Affiliation(s)
- Eleftheria Babaliari
- Foundation for Research and Technology—Hellas (F.O.R.T.H.), Institute of Electronic Structure and Laser (I.E.S.L.), Vasilika Vouton, 70013 Heraklion, Greece;
| | - Anthi Ranella
- Foundation for Research and Technology—Hellas (F.O.R.T.H.), Institute of Electronic Structure and Laser (I.E.S.L.), Vasilika Vouton, 70013 Heraklion, Greece;
| | - Emmanuel Stratakis
- Foundation for Research and Technology—Hellas (F.O.R.T.H.), Institute of Electronic Structure and Laser (I.E.S.L.), Vasilika Vouton, 70013 Heraklion, Greece;
- Department of Physics, University of Crete, 70013 Heraklion, Greece
| |
Collapse
|
4
|
Pourkhodadad S, Hosseinkazemi H, Bonakdar S, Nekounam H. Biomimetic engineered approaches for neural tissue engineering: Spinal cord injury. J Biomed Mater Res B Appl Biomater 2023; 111:701-716. [PMID: 36214332 DOI: 10.1002/jbm.b.35171] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 07/16/2022] [Accepted: 09/03/2022] [Indexed: 01/21/2023]
Abstract
The healing process for spinal cord injuries is complex and presents many challenges. Current advances in nerve regeneration are based on promising tissue engineering techniques, However, the chances of success depend on better mimicking the extracellular matrix (ECM) of neural tissue and better supporting neurons in a three-dimensional environment. The ECM provides excellent biological conditions, including desirable morphological features, electrical conductivity, and chemical compositions for neuron attachment, proliferation and function. This review outlines the rationale for developing a construct for neuron regrowth in spinal cord injury using appropriate biomaterials and scaffolding techniques.
Collapse
Affiliation(s)
| | - Hessam Hosseinkazemi
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Shahin Bonakdar
- National Cell Bank Department, Pasteur Institute of Iran, Tehran, Iran
| | - Houra Nekounam
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
5
|
Polylactic Acid/Polyaniline Nanofibers Subjected to Pre- and Post-Electrospinning Plasma Treatments for Refined Scaffold-Based Nerve Tissue Engineering Applications. Polymers (Basel) 2022; 15:polym15010072. [PMID: 36616422 PMCID: PMC9824446 DOI: 10.3390/polym15010072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022] Open
Abstract
Composite biopolymer/conducting polymer scaffolds, such as polylactic acid (PLA)/ polyaniline (PAni) nanofibers, have emerged as popular alternative scaffolds in the electrical-sensitive nerve tissue engineering (TE). Although mimicking the extracellular matrix geometry, such scaffolds are highly hydrophobic and usually present an inhomogeneous morphology with massive beads that impede nerve cell-material interactions. Therefore, the present study launches an exclusive combinatorial strategy merging successive pre- and post-electrospinning plasma treatments to cope with these issues. Firstly, an atmospheric pressure plasma jet (APPJ) treatment was applied on PLA and PLA/PAni solutions prior to electrospinning, enhancing their viscosity and conductivity. These liquid property changes largely eliminated the beaded structures on the nanofibers, leading to uniform and nicely elongated fibers having average diameters between 170 and 230 nm. After electrospinning, the conceived scaffolds were subjected to a N2 dielectric barrier discharge (DBD) treatment, which significantly increased their surface wettability as illustrated by large decreases in water contact angles for values above 125° to values below 25°. X-ray photoelectron spectroscopy (XPS) analyses revealed that 3.3% of nitrogen was implanted on the nanofibers surface in the form of C-N and N-C=O functionalities upon DBD treatment. Finally, after seeding pheochromocytoma (PC-12) cells on the scaffolds, a greatly enhanced cell adhesion and a more dispersive cell distribution were detected on the DBD-treated samples. Interestingly, when the APPJ treatment was additionally performed, the extension of a high number of long neurites was spotted leading to the formation of a neuronal network between PC-12 cell clusters. In addition, the presence of conducting PAni in the scaffolds further promoted the behavior of PC-12 cells as illustrated by more than a 40% increase in the neurite density without any external electrical stimulation. As such, this work presents a new strategy combining different plasma-assisted biofabrication techniques of conducting nanofibers to create promising scaffolds for electrical-sensitive TE applications.
Collapse
|
6
|
Xue W, Kong Y, Abu R, Roy P, Huh SH, Kuss M, Kumar V, Duan B. Regulation of Schwann Cell and DRG Neurite Behaviors within Decellularized Peripheral Nerve Matrix. ACS APPLIED MATERIALS & INTERFACES 2022; 14:8693-8704. [PMID: 35148064 DOI: 10.1021/acsami.1c20320] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Decellularized nerve hydrogels (dNHs) containing bioactive molecules are promising biomaterials for peripheral nerve injury (PNI) treatment and have been extensively applied in clinical and preclinical practice. However, most previous research projects studied their influences on nerve-related cellular behaviors in two dimensions (2D) without taking hydrogel biomechanics into consideration. The molecular mechanisms underlying the beneficial microenvironment provided by dNHs also remain unclear. In this study, dNHs from rat sciatic nerves were prepared, and their effects on Schwann cell (SC) and dorsal root ganglion (DRG) neurite behaviors were evaluated and compared to commercial rat tail type I collagen (Col) hydrogels in three-dimensional (3D) environments. We found that dNHs could promote SC proliferation and neurite outgrowth, and both the hydrogel mechanics and components contributed to the dNH functionalization. Through proteomics analysis, we found that laminin (LAM) and type V collagen (COLV) exclusively and abundantly existed in dNHs. By adding exogenous LAM and COLV into Col hydrogels, we demonstrated that they regulated SC gene expression and that LAM could promote SC spreading and neurite outgrowth, while COLV improved SC proliferation. Lastly, dNHs were fabricated into paper-like, aligned nerve scaffolds through unidirectional freezing to expand the dNH applications in PNI treatment.
Collapse
Affiliation(s)
- Wen Xue
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
- Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Yunfan Kong
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
- Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Rafay Abu
- Mass Spectrometry & Proteomics Core, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Pooja Roy
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Sung-Ho Huh
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Mitchell Kuss
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
- Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Vikas Kumar
- Mass Spectrometry & Proteomics Core, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Bin Duan
- Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
- Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
- Department of Mechanical and Materials Engineering, University of Nebraska─Lincoln, Lincoln, Nebraska 68588, United States
- Department of Surgery, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| |
Collapse
|
7
|
Acrylonitrile and Pullulan Based Nanofiber Mats as Easily Accessible Scaffolds for 3D Skin Cell Models Containing Primary Cells. Cells 2022; 11:cells11030445. [PMID: 35159255 PMCID: PMC8834075 DOI: 10.3390/cells11030445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/19/2022] [Accepted: 01/25/2022] [Indexed: 11/29/2022] Open
Abstract
(1) Background: Three-dimensional (3D) collagen I-based skin models are commonly used in drug development and substance testing but have major drawbacks such as batch-to-batch variations and ethical concerns. Recently, synthetic nanofibrous scaffolds created by electrospinning have received increasing interest as potential alternatives due to their morphological similarities to native collagen fibrils in size and orientation. The overall objective of this proof-of-concept study was to demonstrate the suitability of two synthetic polymers in creating electrospun scaffolds for 3D skin cell models. (2) Methods: Electrospun nanofiber mats were produced with (i) poly(acrylonitrile-co-methyl acrylate) (P(AN-MA)) and (ii) a blend of pullulan (Pul), poly(vinyl alcohol) (PVA) and poly(acrylic acid) (PAA) (Pul/PVA/PAA) and characterized by scanning electron microscopy (SEM) and diffuse reflectance infrared Fourier transform (DRIFT) spectra. Primary skin fibroblasts and keratinocytes were seeded onto the nanofiber mats and analyzed for phenotypic characteristics (phalloidin staining), viability (Presto Blue HS assay), proliferation (Ki-67 staining), distribution (H/E staining), responsiveness to biological stimuli (qPCR), and formation of skin-like structures (H/E staining). (3) Results: P(AN-MA) mats were more loosely packed than the Pul/PVA/PAA mats, concomitant with larger fiber diameter (340 nm ± 120 nm vs. 250 nm ± 120 nm, p < 0.0001). After sterilization and exposure to cell culture media for 28 days, P(AN-MA) mats showed significant adsorption of fetal calf serum (FCS) from the media into the fibers (DRIFT spectra) and increased fiber diameter (590 nm ± 290 nm, p < 0.0001). Skin fibroblasts were viable over time on both nanofiber mats, but suitable cell infiltration only occurred in the P(AN-MA) nanofiber mats. On P(AN-MA) mats, fibroblasts showed their characteristic spindle-like shape, produced a dermis-like structure, and responded well to TGFβ stimulation, with a significant increase in the mRNA expression of PAI1, COL1A1, and αSMA (all p < 0.05). Primary keratinocytes seeded on top of the dermis equivalent proliferated and formed a stratified epidermis-like structure. (4) Conclusion: P(AN-MA) and Pul/PVA/PAA are both biocompatible materials suitable for nanofiber mat production. P(AN-MA) mats hold greater potential as future 3D skin models due to enhanced cell compatibility (i.e., adsorption of FCS proteins), cell infiltration (i.e., increased pore size due to swelling behavior), and cell phenotype preservation. Thus, our proof-of-concept study shows an easy and robust process of producing electrospun scaffolds for 3D skin cell models made of P(AN-MA) nanofibers without the need for bioactive molecule attachments.
Collapse
|
8
|
Delaine-Smith RM, Hann AJ, Green NH, Reilly GC. Electrospun Fiber Alignment Guides Osteogenesis and Matrix Organization Differentially in Two Different Osteogenic Cell Types. Front Bioeng Biotechnol 2021; 9:672959. [PMID: 34760876 PMCID: PMC8573409 DOI: 10.3389/fbioe.2021.672959] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 06/08/2021] [Indexed: 11/18/2022] Open
Abstract
Biomimetic replication of the structural anisotropy of musculoskeletal tissues is important to restore proper tissue mechanics and function. Physical cues from the local micro-environment, such as matrix fiber orientation, may influence the differentiation and extracellular matrix (ECM) organization of osteogenic progenitor cells. This study investigates how scaffold fiber orientation affects the behavior of mature and progenitor osteogenic cells, the influence on secreted mineralized-collagenous matrix organization, and the resulting construct mechanical properties. Gelatin-coated electrospun poly(caprolactone) fibrous scaffolds were fabricated with either a low or a high degree of anisotropy and cultured with mature osteoblasts (MLO-A5s) or osteogenic mesenchymal progenitor cells (hES-MPs). For MLO-A5 cells, alkaline phosphatase (ALP) activity was highest, and more calcium-containing matrix was deposited onto aligned scaffolds. In contrast, hES-MPs, osteogenic mesenchymal progenitor cells, exhibited higher ALP activity, collagen, and calcium deposition on randomly orientated fibers compared with aligned counterparts. Deposited matrix was isotropic on random fibrous scaffolds, whereas a greater degree of anisotropy was observed in aligned fibrous constructs, as confirmed by second harmonic generation (SHG) and scanning electron microscope (SEM) imaging. This resulted in anisotropic mechanical properties on aligned constructs. This study indicates that mineralized-matrix deposition by osteoblasts can be controlled by scaffold alignment but that the early stages of osteogenesis may not benefit from culture on orientated scaffolds.
Collapse
Affiliation(s)
- Robin M. Delaine-Smith
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
| | - Alice Jane Hann
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Department of Materials Science and Engineering, INSIGNEO Institute for in silico Medicine, University of Sheffield, Sheffield, United Kingdom
| | - Nicola H. Green
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Department of Materials Science and Engineering, INSIGNEO Institute for in silico Medicine, University of Sheffield, Sheffield, United Kingdom
| | - Gwendolen Clair Reilly
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
- Department of Materials Science and Engineering, INSIGNEO Institute for in silico Medicine, University of Sheffield, Sheffield, United Kingdom
| |
Collapse
|
9
|
Chitosan Micro-Grooved Membranes with Increased Asymmetry for the Improvement of the Schwann Cell Response in Nerve Regeneration. Int J Mol Sci 2021; 22:ijms22157901. [PMID: 34360664 PMCID: PMC8348329 DOI: 10.3390/ijms22157901] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/14/2021] [Accepted: 07/19/2021] [Indexed: 01/14/2023] Open
Abstract
Peripheral nerve injuries are a common condition in which a nerve is damaged, affecting more than one million people every year. There are still no efficient therapeutic treatments for these injuries. Artificial scaffolds can offer new opportunities for nerve regeneration applications; in this framework, chitosan is emerging as a promising biomaterial. Here, we set up a simple and effective method for the production of micro-structured chitosan films by solvent casting, with high fidelity in the micro-pattern reproducibility. Three types of chitosan directional micro-grooved patterns, presenting different levels of symmetricity, were developed for application in nerve regenerative medicine: gratings (GR), isosceles triangles (ISO) and scalene triangles (SCA). The directional patterns were tested with a Schwann cell line. The most asymmetric topography (SCA), although it polarized the cell shaping less efficiently, promoted higher cell proliferation and a faster cell migration, both individually and collectively, with a higher directional persistence of motion. Overall, the use of micro-structured asymmetrical directional topographies may be exploited to enhance the nerve regeneration process mediated by chitosan scaffolds.
Collapse
|
10
|
Garrudo FFF, Mikael PE, Xia K, Silva JC, Ouyang Y, Chapman CA, Hoffman PR, Yu Y, Han X, Rodrigues CAV, Cabral JMS, Morgado J, Ferreira FC, Linhardt RJ. The effect of electrospun scaffolds on the glycosaminoglycan profile of differentiating neural stem cells. Biochimie 2021; 182:61-72. [PMID: 33422570 PMCID: PMC7902476 DOI: 10.1016/j.biochi.2021.01.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 01/03/2021] [Accepted: 01/03/2021] [Indexed: 12/20/2022]
Abstract
The use of electrospun scaffolds for neural tissue engineering applications allows a closer mimicry of the native tissue extracellular matrix (ECM), important for the transplantation of cells in vivo. Moreover, the role of the electrospun fiber mat topography on neural stem cell (NSC) differentiation remains to be completely understood. In this work REN-VM cells (NSC model) were differentiated on polycaprolactone (PCL) nanofibers, obtained by wet/wet electrospinning, and on flat glass lamellas. The obtained differentiation profile of NSCs was evaluated using immunofluorescence and qPCR analysis. Glycosaminoglycan (GAG) analysis was successfully emplyed to evaluate changes in the GAG profile of differentiating cells through the use of the highly sensitive liquid chromatography-tandem mass/mass spectrometry (LC-MS/MS) method. Our results show that both culture platforms allow the differentiation of REN-VM cells into neural cells (neurons and astrocytes) similarly. Moreover, LC-MS/MS analysis shows changes in the production of GAGs present both in cell cultures and conditioned media samples. In the media, hyaluronic acid (HA) was detected and correlated with cellular activity and the production of a more plastic extracellular matrix. The cell samples evidence changes in chondroitin sulfate (CS4S, CS6S, CS4S6S) and heparan sulfate (HS6S, HS0S), similar to those previously described in vivo studies and possibly associated with the creation of complex structures, such as perineural networks. The GAG profile of differentiating REN-VM cells on electrospun scaffolds was analyzed for the first time. Our results highlight the advantage of using platforms obtain more reliable and robust neural tissue-engineered transplants.
Collapse
Affiliation(s)
- Fábio F F Garrudo
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY, 12180, USA; Department of Bioengineering and iBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal; Department of Bioengineering and Instituto de Telecomunicações, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisboa, Portugal
| | - Paiyz E Mikael
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY, 12180, USA
| | - Ke Xia
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY, 12180, USA
| | - João C Silva
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY, 12180, USA; Department of Bioengineering and iBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
| | - Yilan Ouyang
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY, 12180, USA
| | - Caitlyn A Chapman
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY, 12180, USA
| | - Pauline R Hoffman
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY, 12180, USA
| | - Yanlei Yu
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY, 12180, USA
| | - Xiaurui Han
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY, 12180, USA
| | - Carlos A V Rodrigues
- Department of Bioengineering and iBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
| | - Joaquim M S Cabral
- Department of Bioengineering and iBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
| | - Jorge Morgado
- Department of Bioengineering and Instituto de Telecomunicações, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisboa, Portugal
| | - Frederico C Ferreira
- Department of Bioengineering and iBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
| | - Robert J Linhardt
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY, 12180, USA.
| |
Collapse
|
11
|
Malik S, Sundarrajan S, Hussain T, Nazir A, Ramakrishna S. Role of Block Copolymers in Tissue Engineering Applications. Cells Tissues Organs 2021; 211:492-505. [PMID: 33596574 DOI: 10.1159/000511866] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 09/24/2020] [Indexed: 11/19/2022] Open
Abstract
Research on synthesis, characterization, and understanding of novel properties of nanomaterials has led researchers to exploit their potential applications. When compared to other nanotechnologies described in the literature, electrospinning has received significant interest due to its ability to synthesize novel nanostructures (such as nanofibers, nanorods, nanotubes, etc.) with distinctive properties such as high surface-to-volume ratio, porosity, various morphologies such as fibers, tubes, ribbons, mesoporous and coated structures, and so on. Various materials such as polymers, ceramics, and composites have been fabricated using the electrospinning technique. Among them, polymers, especially block copolymers, are one of the useful and niche systems studied recently owing to their unique and fascinating properties in both solution and solid state due to thermodynamic incompatibility of the blocks, that results in microphase separation. Morphology and mechanical properties of electrospun block copolymers are intensely influenced by quantity and length of soft and hard segments. They are one of the best studied systems to fit numerous applications due to a broad variety of properties they display upon varying the composition ratio and molecular weight of blocks. In this review, the synthesis, fundamentals, electrospinning, and tissue engineering application of block copolymers are highlighted.
Collapse
Affiliation(s)
- Sairish Malik
- Electrospun Materials & Polymeric Membranes Research Group (EMPMRG), National Textile University, Faisalabad, Pakistan
| | - Subramanian Sundarrajan
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
| | - Tanveer Hussain
- Electrospun Materials & Polymeric Membranes Research Group (EMPMRG), National Textile University, Faisalabad, Pakistan
| | - Ahsan Nazir
- Electrospun Materials & Polymeric Membranes Research Group (EMPMRG), National Textile University, Faisalabad, Pakistan
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore,
| |
Collapse
|
12
|
Abstract
This review paper examines the current state-of-the-art in fabrication of aligned fibers via electrospinning techniques and the effects of these techniques on the mechanical and dielectric properties of electrospun fibers. Molecular orientation, system configuration to align fibers, and post-drawing treatment, like hot/cold drawing process, contribute to better specific strength and specific stiffness properties of nanofibers. The authors suggest that these improved, aligned nanofibers, when applied in composites, have better mechanical and dielectric properties for many structural and multifunctional applications, including advanced aerospace applications and energy storage devices. For these applications, most fiber alignment electrospinning research has focused on either mechanical property improvement or dielectric property improvement alone, but not both simultaneously. Relative to many other nanofiber formation techniques, the electrospinning technique exhibits superior nanofiber formation when considering cost and manufacturing complexity for many situations. Even though the dielectric property of pure nanofiber mat may not be of general interest, the analysis of the combined effect of mechanical and dielectric properties is relevant to the present analysis of improved and aligned nanofibers. A plethora of nanofibers, in particular, polyacrylonitrile (PAN) electrospun nanofibers, are discussed for their mechanical and dielectric properties. In addition, other types of electrospun nanofibers are explored for their mechanical and dielectric properties. An exploratory study by the author demonstrates the relationship between mechanical and dielectric properties for specimens obtained from a rotating mandrel horizontal setup.
Collapse
|
13
|
Zheng C, Yang Z, Chen S, Zhang F, Rao Z, Zhao C, Quan D, Bai Y, Shen J. Nanofibrous nerve guidance conduits decorated with decellularized matrix hydrogel facilitate peripheral nerve injury repair. Am J Cancer Res 2021; 11:2917-2931. [PMID: 33456580 PMCID: PMC7806490 DOI: 10.7150/thno.50825] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 12/21/2020] [Indexed: 12/15/2022] Open
Abstract
Rationale: Peripheral nerve injury (PNI) is a great challenge for regenerative medicine. Nerve autograft is the gold standard for clinical PNI repair. Due to its significant drawbacks, artificial nerve guidance conduits (NGCs) have drawn much attention as replacement therapies. We developed a combinatorial NGC consisting of longitudinally aligned electrospun nanofibers and porcine decellularized nerve matrix hydrogel (pDNM gel). The in vivo capacity for facilitating nerve tissue regeneration and functional recovery was evaluated in a rat sciatic nerve defect model. Methods: Poly (L-lactic acid) (PLLA) was electrospun into randomly oriented (PLLA-random) and longitudinally aligned (PLLA-aligned) nanofibers. PLLA-aligned were further coated with pDNM gel at concentrations of 0.25% (PLLA-aligned/0.25% pDNM gel) and 1% (PLLA-aligned/1% pDNM gel). Axonal extension and Schwann cells migration were evaluated by immunofluorescence staining of dorsal root ganglia cultured on the scaffolds. To fabricate implantable NGCs, the nanofibrous scaffolds were rolled and covered with an electrospun protection tube. The fabricated NGCs were then implanted into a 5 mm sciatic nerve defect model in adult male Sprague-Dawley rats. Nerves treated with NGCs were compared to contralateral uninjured nerves (control group), injured but untreated nerves (unstitched group), and autografted nerves. Nerve regeneration was monitored by an established set of assays, including T2 values and diffusion tensor imaging (DTI) derived from multiparametric magnetic resonance imaging (MRI), histological assessments, and immunostaining. Nerve functional recovery was evaluated by walking track analysis. Results: PLLA-aligned/0.25% pDNM gel scaffold exhibited the best performance in facilitating directed axonal extension and Schwann cells migration in vitro due to the combined effects of the topological cues provided by the aligned nanofibers and the biochemical cues retained in the pDNM gel. Consistent results were obtained in animal experiments with the fabricated NGCs. Both the T2 and fractional anisotropy values of the PLLA-aligned/0.25% pDNM gel group were the closest to those of the autografted group, and returned to normal much faster than those of the other NGCs groups. Histological assessment indicated that the implanted PLLA-aligned/0.25% pDNM gel NGC resulted in the largest number of axons and the most extensive myelination among all fabricated NGCs. Further, the PLLA-aligned/0.25% pDNM gel group exhibited the highest sciatic nerve function index, which was comparable to that of the autografted group, at 8 weeks post-surgery. Conclusions: NGCs composed of aligned PLLA nanofibers decorated with 0.25% pDNM gel provided both topological and biochemical guidance for directing and promoting axonal extension, nerve fiber myelination, and functional recovery. Moreover, T2-mapping and DTI metrics were found to be useful non-invasive monitoring techniques for PNI treatment.
Collapse
|
14
|
Puhl DL, Funnell JL, Nelson DW, Gottipati MK, Gilbert RJ. Electrospun Fiber Scaffolds for Engineering Glial Cell Behavior to Promote Neural Regeneration. Bioengineering (Basel) 2020; 8:4. [PMID: 33383759 PMCID: PMC7823609 DOI: 10.3390/bioengineering8010004] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 02/06/2023] Open
Abstract
Electrospinning is a fabrication technique used to produce nano- or micro- diameter fibers to generate biocompatible, biodegradable scaffolds for tissue engineering applications. Electrospun fiber scaffolds are advantageous for neural regeneration because they mimic the structure of the nervous system extracellular matrix and provide contact guidance for regenerating axons. Glia are non-neuronal regulatory cells that maintain homeostasis in the healthy nervous system and regulate regeneration in the injured nervous system. Electrospun fiber scaffolds offer a wide range of characteristics, such as fiber alignment, diameter, surface nanotopography, and surface chemistry that can be engineered to achieve a desired glial cell response to injury. Further, electrospun fibers can be loaded with drugs, nucleic acids, or proteins to provide the local, sustained release of such therapeutics to alter glial cell phenotype to better support regeneration. This review provides the first comprehensive overview of how electrospun fiber alignment, diameter, surface nanotopography, surface functionalization, and therapeutic delivery affect Schwann cells in the peripheral nervous system and astrocytes, oligodendrocytes, and microglia in the central nervous system both in vitro and in vivo. The information presented can be used to design and optimize electrospun fiber scaffolds to target glial cell response to mitigate nervous system injury and improve regeneration.
Collapse
Affiliation(s)
- Devan L. Puhl
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA; (D.L.P.); (J.L.F.); (D.W.N.); (M.K.G.)
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA
| | - Jessica L. Funnell
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA; (D.L.P.); (J.L.F.); (D.W.N.); (M.K.G.)
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA
| | - Derek W. Nelson
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA; (D.L.P.); (J.L.F.); (D.W.N.); (M.K.G.)
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA
| | - Manoj K. Gottipati
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA; (D.L.P.); (J.L.F.); (D.W.N.); (M.K.G.)
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA
- Center for Brain and Spinal Cord Repair, Department of Neuroscience, The Ohio State University, 460 W. 12th Avenue, Columbus, OH 43210, USA
| | - Ryan J. Gilbert
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA; (D.L.P.); (J.L.F.); (D.W.N.); (M.K.G.)
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA
| |
Collapse
|
15
|
Pu X, Zhou X, Huang Z, Yin G, Chen X. Fabrication of extracellular matrix-coated conductive polypyrrole-poly(l-lactide) fiber-films and their synergistic effect with (nerve growth factor)/(epidermal growth factor) on neurites growth. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
16
|
Wu P, Wang L, Li W, Zhang Y, Wu Y, Zhi D, Wang H, Wang L, Kong D, Zhu M. Construction of vascular graft with circumferentially oriented microchannels for improving artery regeneration. Biomaterials 2020; 242:119922. [PMID: 32155476 PMCID: PMC7483276 DOI: 10.1016/j.biomaterials.2020.119922] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 02/03/2020] [Accepted: 02/25/2020] [Indexed: 12/29/2022]
Abstract
Design and fabrication of scaffolds with three-dimensional (3D) topological cues inducing regeneration of the neo-tissue comparable to native one remains a major challenge in both scientific and clinical fields. Here, we developed a well-designed vascular graft with 3D highly interconnected and circumferentially oriented microchannels by using the sacrificial sugar microfiber leaching method. The microchannels structure was capable of promoting the migration, oriented arrangement, elongation, and the contractile phenotype expression of vascular smooth muscle cells (VSMCs) in vitro. After implantation into the rat aorta defect model, the microchannels in vascular grafts simultaneously improved the infiltration and aligned arrangement of VSMCs and the oriented deposition of extracellular matrix (ECM), as well as the recruitment and polarization of macrophages. These positive results also provided protection and support for ECs growth, and ultimately accelerated the endothelialization. Our research provides a new strategy for the fabrication of grafts with the capability of inducing arterial regeneration, which could be further extended to apply in preparing other kinds of oriented scaffolds aiming to guide oriented tissue in situ regeneration.
Collapse
Affiliation(s)
- Pingli Wu
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Lina Wang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Wen Li
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Yu Zhang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Yifan Wu
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Dengke Zhi
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Hongjun Wang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Lianyong Wang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin, 300071, China.
| | - Deling Kong
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin, 300071, China; Rongxiang Xu Center for Regenerative Life Science, Nankai University, Tianjin, 300071, China.
| | - Meifeng Zhu
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin, 300071, China; Rongxiang Xu Center for Regenerative Life Science, Nankai University, Tianjin, 300071, China; Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA.
| |
Collapse
|
17
|
Wang P, Zhao H, Yao Y, Lu C, Ma J, Chen R, Pan J. Repair of facial nerve crush injury in rabbits using collagen plus basic fibroblast growth factor. J Biomed Mater Res A 2020; 108:1329-1337. [PMID: 32090462 DOI: 10.1002/jbm.a.36905] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 06/05/2019] [Accepted: 02/17/2020] [Indexed: 01/21/2023]
Abstract
Facial nerves are frequently crushed or cut during facial surgery. In this study, the feasibility of repairing facial nerves in rabbits after crush or cut off injury was evaluated using collagen conduits with A collagen-binding domain (CBD)-human basic fibroblast growth factor (bFGF). A total of 39 six-month-old New Zealand White rabbits were randomly divided into four groups of nine rabbits, and bilateral crush or cut off injuries were made on each animal's face. Three rabbits were classified as the healthy control. The facial nerves were cut or crushed and then were either untreated or wrapped with a collagen conduit plus bFGF. At the 15, 30, and 90 days after the injury, three rabbits in each group were sacrificed. Regeneration of the injured facial nerve was evaluated using electrophysiological examination (compound muscle action potentials, CAMPs), scanning electron microscopy, and histological observation. The results suggested that using collagen conduits with recombinant proteins CBD-bFGF to repair facial nerves with crush or cut off injuries promoted functional facial nerve recovery. This treatment, as a possible therapeutic for patients with facial nerve injury, requires further investigation.
Collapse
Affiliation(s)
- Piao Wang
- Department of Oral and Maxillofacial Plastic & Trauma Surgery, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Hao Zhao
- Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Yao Yao
- Department of Prosthodontics, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Chao Lu
- Department of General Dentistry, Beijing Chongwen Hospital of Stomatology, Beijing, China
| | - Jinling Ma
- Department of Multidisciplinary Treatment Center, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Renji Chen
- Department of Oral and Maxillofacial Plastic & Trauma Surgery, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Juli Pan
- Department of Multidisciplinary Treatment Center, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| |
Collapse
|
18
|
Torres-Mejía E, Trümbach D, Kleeberger C, Dornseifer U, Orschmann T, Bäcker T, Brenke JK, Hadian K, Wurst W, López-Schier H, Desbordes SC. Sox2 controls Schwann cell self-organization through fibronectin fibrillogenesis. Sci Rep 2020; 10:1984. [PMID: 32029747 PMCID: PMC7005302 DOI: 10.1038/s41598-019-56877-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 12/09/2019] [Indexed: 02/03/2023] Open
Abstract
The extracellular matrix is known to modulate cell adhesion and migration during tissue regeneration. However, the molecular mechanisms that fine-tune cells to extra-cellular matrix dynamics during regeneration of the peripheral nervous system remain poorly understood. Using the RSC96 Schwann cell line, we show that Sox2 directly controls fibronectin fibrillogenesis in Schwann cells in culture, to provide a highly oriented fibronectin matrix, which supports their organization and directional migration. We demonstrate that Sox2 regulates Schwann cell behaviour through the upregulation of multiple extracellular matrix and migration genes as well as the formation of focal adhesions during cell movement. We find that mouse primary sensory neurons and human induced pluripotent stem cell-derived motoneurons require the Sox2-dependent fibronectin matrix in order to migrate along the oriented Schwann cells. Direct loss of fibronectin in Schwann cells impairs their directional migration affecting the alignment of the axons in vitro. Furthermore, we show that Sox2 and fibronectin are co-expressed in proregenerative Schwann cells in vivo in a time-dependent manner during sciatic nerve regeneration. Taken together, our results provide new insights into the mechanisms by which Schwann cells regulate their own extracellular microenvironment in a Sox2-dependent manner to ensure the proper migration of neurons.
Collapse
Affiliation(s)
- Elen Torres-Mejía
- Stem Cells in Neural Development and Disease group, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany.,Research Unit Sensory Biology and Organogenesis, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany.,Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany
| | - Dietrich Trümbach
- Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany
| | - Charlotte Kleeberger
- Department of Plastic, Reconstructive, Hand and Burn Surgery, Academic Hospital Bogenhausen, Munich, 81925, Germany
| | - Ulf Dornseifer
- Department of Plastic, Reconstructive, Hand and Burn Surgery, Academic Hospital Bogenhausen, Munich, 81925, Germany
| | - Tanja Orschmann
- Stem Cells in Neural Development and Disease group, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany.,Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany.,Stem Cell Based-Assay Development Platform (SCADEV), Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany
| | - Theresa Bäcker
- Stem Cells in Neural Development and Disease group, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany.,Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany.,Stem Cell Based-Assay Development Platform (SCADEV), Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany
| | - Jara Kerstin Brenke
- Assay Development and Screening Platform, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany
| | - Kamyar Hadian
- Assay Development and Screening Platform, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany
| | - Wolfgang Wurst
- Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany.,Chair of Developmental Genetics, Technische Universität München-Weihenstephan, 85350, Freising-Weihenstephan, Germany.,German Center for Neurodegenerative Diseases (DZNE), 81377, Munich, Germany
| | - Hernán López-Schier
- Research Unit Sensory Biology and Organogenesis, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany
| | - Sabrina C Desbordes
- Stem Cells in Neural Development and Disease group, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany. .,Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany. .,Stem Cell Based-Assay Development Platform (SCADEV), Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Munich-Neuherberg, Germany. .,ISAR Bioscience GmbH, Institute for Stem Cell & Applied Regenerative Medicine Research, Semmelweisstr. 5, 82152, Munich, Germany.
| |
Collapse
|
19
|
Carvalho CR, Oliveira JM, Reis RL. Modern Trends for Peripheral Nerve Repair and Regeneration: Beyond the Hollow Nerve Guidance Conduit. Front Bioeng Biotechnol 2019; 7:337. [PMID: 31824934 PMCID: PMC6882937 DOI: 10.3389/fbioe.2019.00337] [Citation(s) in RCA: 160] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 10/30/2019] [Indexed: 12/13/2022] Open
Abstract
Peripheral nerve repair and regeneration remains among the greatest challenges in tissue engineering and regenerative medicine. Even though peripheral nerve injuries (PNIs) are capable of some degree of regeneration, frail recovery is seen even when the best microsurgical technique is applied. PNIs are known to be very incapacitating for the patient, due to the deprivation of motor and sensory abilities. Since there is no optimal solution for tackling this problem up to this day, the evolution in the field is constant, with innovative designs of advanced nerve guidance conduits (NGCs) being reported every day. As a basic concept, a NGC should act as a physical barrier from the external environment, concomitantly acting as physical guidance for the regenerative axons across the gap lesion. NGCs should also be able to retain the naturally released nerve growth factors secreted by the damaged nerve stumps, as well as reducing the invasion of scar tissue-forming fibroblasts to the injury site. Based on the neurobiological knowledge related to the events that succeed after a nerve injury, neuronal subsistence is subjected to the existence of an ideal environment of growth factors, hormones, cytokines, and extracellular matrix (ECM) factors. Therefore, it is known that multifunctional NGCs fabricated through combinatorial approaches are needed to improve the functional and clinical outcomes after PNIs. The present work overviews the current reports dealing with the several features that can be used to improve peripheral nerve regeneration (PNR), ranging from the simple use of hollow NGCs to tissue engineered intraluminal fillers, or to even more advanced strategies, comprising the molecular and gene therapies as well as cell-based therapies.
Collapse
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, 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, 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, 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, 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, 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, Guimarães, Portugal
| |
Collapse
|
20
|
Yu M, Liu Y, Yu X, Li J, Zhao W, Hu J, Cheng K, Weng W, Zhang B, Wang H, Dong L. Enhanced osteogenesis of quasi-three-dimensional hierarchical topography. J Nanobiotechnology 2019; 17:102. [PMID: 31581945 PMCID: PMC6777029 DOI: 10.1186/s12951-019-0536-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 09/24/2019] [Indexed: 12/11/2022] Open
Abstract
Natural extracellular matrices (ECMs) are three-dimensional (3D) and multi-scale hierarchical structure. However, coatings used as ECM-mimicking structures for osteogenesis are typically two-dimensional or single-scaled. Here, we design a distinct quasi-three-dimensional hierarchical topography integrated of density-controlled titania nanodots and nanorods. We find cellular pseudopods preferred to anchor deeply across the distinct 3D topography, dependently of the relative density of nanorods, which promote the osteogenic differentiation of osteoblast but not the viability of fibroblast. The in vivo experimental results further indicate that the new bone formation, the relative bone-implant contact as well as the push-put strength, are significantly enhanced on the 3D hierarchical topography. We also show that the exposures of HFN7.1 and mAb1937 critical functional motifs of fibronectin for cellular anchorage are up-regulated on the 3D hierarchical topography, which might synergistically promote the osteogenesis. Our findings suggest the multi-dimensions and multi-scales as vital characteristic of cell-ECM interactions and as an important design parameter for bone implant coatings.
Collapse
Affiliation(s)
- Mengfei Yu
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
- The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, 310027, China
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, China
| | - Yu Liu
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Xiaowen Yu
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Jianhua Li
- Hangzhou Dental Hospital, Hangzhou, 310006, China
| | - Wenquan Zhao
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Ji'an Hu
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Kui Cheng
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, China
| | - Wenjian Weng
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, China
| | - Bin Zhang
- The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, 310027, China.
| | - Huiming Wang
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
| | - Lingqing Dong
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, China.
| |
Collapse
|
21
|
Motta CMM, Endres KJ, Wesdemiotis C, Willits RK, Becker ML. Enhancing Schwann cell migration using concentration gradients of laminin-derived peptides. Biomaterials 2019; 218:119335. [PMID: 31302351 PMCID: PMC6868524 DOI: 10.1016/j.biomaterials.2019.119335] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 06/29/2019] [Accepted: 07/03/2019] [Indexed: 12/17/2022]
Abstract
Neuroregeneration following peripheral nerve injury is largely mediated by Schwann cells (SC), the principal glial cell that supports neurons in the peripheral nervous system. Axonal regeneration in vivo is limited by the extent of SC migration into the gap between the proximal and distal nerve, however, little is known regarding the principal driving forces for SC migration. Engineered microenvironments, such as molecular and protein gradients, play a role in the migration of many cell types, including cancer cells and fibroblasts. However, haptotactic strategies have not been applied widely to SC. Herein, a series of tethered laminin-derived peptides were analyzed for their influence on SC adhesion, proliferation, and alignment. Concentration gradient substrates were fabricated using a controlled vapor deposition method, followed by covalent peptide attachment via a thiol-ene reaction, and characterized by X-ray photoelectron spectroscopy (XPS) and MALDI-MS imaging. While tethered RGD peptides supported SC adhesion and proliferation, concentration gradients of RGD had little influence on biased SC directional migration. In contrast, YIGSR promoted less SC attachment than RGD, yet YIGSR peptide gradients directed migration with a strong bias to the concentration profile. With YIGSR peptide, overall speed increased with the steepness of the peptide concentration profile. YIGSR gradients had no haptotactic effect on rat dermal fibroblast migration, in contrast to fibroblast migration on RGD gradients. The response of SC to these tethered peptide gradients will guide the development of translationally relevant constructs designed to facilitate endogenous SC infiltration into defects for nerve regeneration.
Collapse
Affiliation(s)
- Cecilia M M Motta
- Department of Polymer Science, The University of Akron, Akron, OH, 44325, United States
| | - Kevin J Endres
- Department of Chemistry, The University of Akron, Akron, OH, 44325, United States
| | - Chrys Wesdemiotis
- Department of Chemistry, The University of Akron, Akron, OH, 44325, United States
| | - Rebecca K Willits
- Department of Biomedical Engineering, The University of Akron, Akron, OH, 44325, United States.
| | - Matthew L Becker
- Department of Polymer Science, The University of Akron, Akron, OH, 44325, United States; Department of Biomedical Engineering, The University of Akron, Akron, OH, 44325, United States; Department of Chemistry, Mechanical Engineering and Materials Science, and Orthopaedic Surgery, Duke University, Durham, NC, 27708, United States.
| |
Collapse
|
22
|
Lotfi L, Khakbiz M, Moosazadeh Moghaddam M, Bonakdar S. A biomaterials approach to Schwann cell development in neural tissue engineering. J Biomed Mater Res A 2019; 107:2425-2446. [DOI: 10.1002/jbm.a.36749] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 02/08/2019] [Accepted: 05/07/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Leila Lotfi
- Department of Life Science Engineering, Faculty of New Sciences and TechnologiesUniversity of Tehran Tehran Iran
| | - Mehrdad Khakbiz
- Department of Life Science Engineering, Faculty of New Sciences and TechnologiesUniversity of Tehran Tehran Iran
| | | | - Shahin Bonakdar
- National Cell Bank DepartmentPasteur Institute of Iran Tehran Iran
| |
Collapse
|
23
|
Chen C, Ruan S, Bai X, Lin C, Xie C, Lee IS. Patterned iridium oxide film as neural electrode interface: Biocompatibility and improved neurite outgrowth with electrical stimulation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109865. [PMID: 31349419 DOI: 10.1016/j.msec.2019.109865] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 06/01/2019] [Accepted: 06/03/2019] [Indexed: 01/19/2023]
Abstract
Iridium (Ir) thin film was deposited on patterned titanium substrate by direct-current (DC) magnetron sputtering, and then activated in sulfuric acid (H2SO4) through repetitive potential sweeps to form iridium oxide (IrOx) as neural electrode interface. The resultant IrOx film showed a porous and open morphology with aligned microstructure, exhibited superior electrochemical performance and excellent stability. The IrOx film supported neural stem cells (NSCs) attachment, proliferation and improved processes without causing toxicity. The patterned IrOx films offered a unique system to investigate the synergistic effects of topographical cue and electrical stimulation on neurite outgrowth. Electrical stimulation, when applied through patterned IrOx films, was found to further increase the neurite extension of neuron-like cells and significantly reorient the neurite alignment towards to the direction of stimulation. These results indicate that IrOx film, as electrode-tissue interface is highly stable and biocompatible with excellent electrochemical properties.
Collapse
Affiliation(s)
- Cen Chen
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, PR China; School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, PR China; Institute of Natural Sciences, Yonsei University, Seoul 03722, Republic of Korea
| | - Shichao Ruan
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Xue Bai
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Chenming Lin
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Chungang Xie
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - In-Seop Lee
- Institute of Natural Sciences, Yonsei University, Seoul 03722, Republic of Korea.
| |
Collapse
|
24
|
Liverani L, Killian MS, Boccaccini AR. Fibronectin Functionalized Electrospun Fibers by Using Benign Solvents: Best Way to Achieve Effective Functionalization. Front Bioeng Biotechnol 2019; 7:68. [PMID: 31001528 PMCID: PMC6456675 DOI: 10.3389/fbioe.2019.00068] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 03/11/2019] [Indexed: 01/16/2023] Open
Abstract
The aim of this study is to demonstrate the feasibility of different functionalization methods for electrospun fibers developed using benign solvents. In particular three different approaches were investigated to achieve the functionalization of poly(epsilon caprolactone) (PCL) electrospun fibers with fibronectin. Protein surface entrapment, chemical functionalization and coaxial electrospinning were performed and compared. Moreover, bilayered scaffolds, with a top patterned and functionalized layer with fibronectin and a randomly oriented not functionalized layer were fabricated, demonstrating the versatility of the use of benign solvents for electrospinning also for the fabrication of complex graded structures. Besides the characterization of the morphology of the obtained scaffolds, ATR-FTIR and ToF-SIMS were used for the surface characterization of the functionalized fibers. Cell adhesion and proliferation were also investigated by using ST-2 cells. Positive results were obtained from all functionalized scaffolds and the most promising results were obtained with bilayered scaffolds, in terms of cells infiltration inside the fibrous structure.
Collapse
Affiliation(s)
- Liliana Liverani
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Manuela S. Killian
- Chair for Surface Science and Corrosion, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Aldo R. Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| |
Collapse
|
25
|
Grasman JM, Ferreira JA, Kaplan DL. Tissue Models for Neurogenesis and Repair in 3D. ADVANCED FUNCTIONAL MATERIALS 2018; 28:1803822. [PMID: 32440261 PMCID: PMC7241596 DOI: 10.1002/adfm.201803822] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Development and maturation of vascular and neuronal tissues occurs simultaneously in utero, and are regulated by significant crosstalk. We report on the development of a 3D tissue system to model neurogenesis and recapitulate developmental signaling conditions. Human umbilical vein endothelial cells (HUVECs) were seeded inside channels within collagen gels to represent nascent vascular networks. Axons extending from chicken dorsal root ganglia (DRGs) grew significantly longer and preferentially towards the HUVEC seeded channels with respect to unloaded channels. To replicate these findings without the vascular component, channels were loaded with brain-derived neurotrophic factor (BDNF), the principle signaling molecule in HUVEC-stimulated axonal growth, and axons likewise were significantly longer and grew preferentially towards the BDNF-loaded channels with respect to controls. This 3D tissue system was then used as an in vitro replicate for peripheral nerve injury, with neural repair observed within 2 weeks. These results demonstrate that our 3D tissue system can model neural network formation, repair after laceration injuries, and can be utilized to further study how these networks form and interact with other tissues, such as skin or skeletal muscle.
Collapse
Affiliation(s)
| | | | - David L. Kaplan
- Address Correspondence to: David L. Kaplan, Ph.D., Department of Biomedical Engineering, Tufts University, 4 Colby St, Medford, MA, 02155, Tel: 617-627-3251, Fax: 617-627-3231,
| |
Collapse
|
26
|
Yi S, Xu L, Gu X. Scaffolds for peripheral nerve repair and reconstruction. Exp Neurol 2018; 319:112761. [PMID: 29772248 DOI: 10.1016/j.expneurol.2018.05.016] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 05/05/2018] [Accepted: 05/13/2018] [Indexed: 12/22/2022]
Abstract
Trauma-associated peripheral nerve defect is a widespread clinical problem. Autologous nerve grafting, the current gold standard technique for the treatment of peripheral nerve injury, has many internal disadvantages. Emerging studies showed that tissue engineered nerve graft is an effective substitute to autologous nerves. Tissue engineered nerve graft is generally composed of neural scaffolds and incorporating cells and molecules. A variety of biomaterials have been used to construct neural scaffolds, the main component of tissue engineered nerve graft. Synthetic polymers (e.g. silicone, polyglycolic acid, and poly(lactic-co-glycolic acid)) and natural materials (e.g. chitosan, silk fibroin, and extracellular matrix components) are commonly used along or together to build neural scaffolds. Many other materials, including the extracellular matrix, glass fabrics, ceramics, and metallic materials, have also been used to construct neural scaffolds. These biomaterials are fabricated to create specific structures and surface features. Seeding supporting cells and/or incorporating neurotrophic factors to neural scaffolds further improve restoration effects. Preliminary studies demonstrate that clinical applications of these neural scaffolds achieve satisfactory functional recovery. Therefore, tissue engineered nerve graft provides a good alternative to autologous nerve graft and represents a promising frontier in neural tissue engineering.
Collapse
Affiliation(s)
- Sheng Yi
- Key laboratory of neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Lai Xu
- Key laboratory of neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Xiaosong Gu
- Key laboratory of neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China.
| |
Collapse
|
27
|
Wrobel MR, Sundararaghavan HG. Biomaterial Cues to Direct a Pro-regenerative Phenotype in Macrophages and Schwann Cells. Neuroscience 2018; 376:172-187. [DOI: 10.1016/j.neuroscience.2018.02.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 01/23/2018] [Accepted: 02/09/2018] [Indexed: 12/11/2022]
|
28
|
Guillem-Marti J, Boix-Lemonche G, Gugutkov D, Ginebra MP, Altankov G, Manero JM. Recombinant fibronectin fragment III8-10/polylactic acid hybrid nanofibers enhance the bioactivity of titanium surface. Nanomedicine (Lond) 2018; 13:899-912. [PMID: 29564966 DOI: 10.2217/nnm-2017-0342] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
AIM To develop a nanofiber (NF)-based biomimetic coating on titanium (Ti) that mimics the complex spatiotemporal organization of the extracellular matrix (ECM). MATERIALS & METHODS Recombinant cell attachment site (CAS) of fibronectin type III8-10 domain was co-electrospun with polylactic acid (PLA) and covalently bound on polished Ti discs. Osteoblast-like SaOS-2 cells were used to evaluate their complex bioactivity. RESULTS A significant increase of cell spreading was found on CAS/PLA hybrid NFs, followed by control pure PLA NFs and bare Ti discs. Cell proliferation showed similar trend being about twice higher on CAS/PLA NFs. The significantly increased ALP activity at day 21 indicated an enhanced differentiation of SaOS-2 cells. CONCLUSION Coating of Ti implants with hybrid CAS/PLA NFs may improve significantly their osseointegration potential.
Collapse
Affiliation(s)
- Jordi Guillem-Marti
- Biomaterials, Biomechanics & Tissue Engineering Group, Department of Materials Science & Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), 08930 Barcelona, Spain.,Barcelona Research Center in Multiscale Science & Engineering, Universitat Politècnica de Catalunya, 08930 Barcelona, Spain
| | - Gerard Boix-Lemonche
- Biomaterials, Biomechanics & Tissue Engineering Group, Department of Materials Science & Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), 08930 Barcelona, Spain.,Barcelona Research Center in Multiscale Science & Engineering, Universitat Politècnica de Catalunya, 08930 Barcelona, Spain
| | - Dencho Gugutkov
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science & Technology (BIST), 08028 Barcelona, Spain
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics & Tissue Engineering Group, Department of Materials Science & Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), 08930 Barcelona, Spain.,Barcelona Research Center in Multiscale Science & Engineering, Universitat Politècnica de Catalunya, 08930 Barcelona, Spain.,Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science & Technology (BIST), 08028 Barcelona, Spain
| | - George Altankov
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science & Technology (BIST), 08028 Barcelona, Spain.,Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 50018 Zaragoza, Spain.,ICREA (Institució Catalana de Recerca i Estudis Avançats), 08010 Barcelona, Spain
| | - Jose M Manero
- Biomaterials, Biomechanics & Tissue Engineering Group, Department of Materials Science & Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), 08930 Barcelona, Spain.,Barcelona Research Center in Multiscale Science & Engineering, Universitat Politècnica de Catalunya, 08930 Barcelona, Spain
| |
Collapse
|
29
|
Abstract
Objectives To test a 3D approach for neural network formation, alignment, and patterning that is reproducible and sufficiently stable to allow for easy manipulation. Results A novel cell culture system was designed by engineering a method for the directional growth of neurons. This uses NG108-15 neuroblastoma x glioma hybrid cells cultured on suspended and aligned electrospun fibers. These fiber networks improved cellular directionality, with alignment angle standard deviations significantly lower on fibers than on regular culture surfaces. Morphological studies found nuclear aspect ratios and cell projection lengths to be unchanged, indicating that cells maintained neural morphology while growing on fibers and forming a 3D network. Furthermore, fibronectin-coated fibers enhanced neurite extensions for all investigated time points. Differentiated neurons exhibited significant increases in average neurite lengths 96 h post plating, and formed neurite extensions parallel to suspended fibers, as visualized through scanning electron microscopy. Conclusions The developed model has the potential to serve as the basis for advanced 3D studies, providing an original approach to neural network patterning and setting the groundwork for further investigations into functionality.
Collapse
|
30
|
Yao S, Yang Y, Wang X, Wang L. Fabrication and characterization of aligned fibrin nanofiber hydrogel loaded with PLGA microspheres. Macromol Res 2017. [DOI: 10.1007/s13233-017-5121-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
31
|
Kohn-Polster C, Bhatnagar D, Woloszyn DJ, Richtmyer M, Starke A, Springwald AH, Franz S, Schulz-Siegmund M, Kaplan HM, Kohn J, Hacker MC. Dual-Component Gelatinous Peptide/Reactive Oligomer Formulations as Conduit Material and Luminal Filler for Peripheral Nerve Regeneration. Int J Mol Sci 2017; 18:E1104. [PMID: 28531139 PMCID: PMC5455012 DOI: 10.3390/ijms18051104] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 05/09/2017] [Accepted: 05/17/2017] [Indexed: 02/01/2023] Open
Abstract
Toward the next generation of nerve guidance conduits (NGCs), novel biomaterials and functionalization concepts are required to address clinical demands in peripheral nerve regeneration (PNR). As a biological polymer with bioactive motifs, gelatinous peptides are promising building blocks. In combination with an anhydride-containing oligomer, a dual-component hydrogel system (cGEL) was established. First, hollow cGEL tubes were fabricated by a continuous dosing and templating process. Conduits were characterized concerning their mechanical strength, in vitro and in vivo degradation and biocompatibility. Second, cGEL was reformulated as injectable shear thinning filler for established NGCs, here tyrosine-derived polycarbonate-based braided conduits. Thereby, the formulation contained the small molecule LM11A-31. The biofunctionalized cGEL filler was assessed regarding building block integration, mechanical properties, in vitro cytotoxicity, and growth permissive effects on human adipose tissue-derived stem cells. A positive in vitro evaluation motivated further application of the filler material in a sciatic nerve defect. Compared to the empty conduit and pristine cGEL, the functionalization performed superior, though the autologous nerve graft remains the gold standard. In conclusion, LM11A-31 functionalized cGEL filler with extracellular matrix (ECM)-like characteristics and specific biochemical cues holds great potential to support PNR.
Collapse
Affiliation(s)
- Caroline Kohn-Polster
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
- Collaborative Research Center (SFB-TR67), Matrixengineering Leipzig and Dresden, Germany.
| | - Divya Bhatnagar
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8066, USA.
| | - Derek J Woloszyn
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8066, USA.
- Boston University School of Medicine, Boston University, Boston, MA 02118, USA.
| | - Matthew Richtmyer
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8066, USA.
| | - Annett Starke
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
| | - Alexandra H Springwald
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
| | - Sandra Franz
- Collaborative Research Center (SFB-TR67), Matrixengineering Leipzig and Dresden, Germany.
- Department of Dermatology, Venereology and Allergology of Medical Faculty of Leipzig University, 04317 Leipzig, Germany.
| | - Michaela Schulz-Siegmund
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
- Collaborative Research Center (SFB-TR67), Matrixengineering Leipzig and Dresden, Germany.
| | - Hilton M Kaplan
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8066, USA.
| | - Joachim Kohn
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8066, USA.
| | - Michael C Hacker
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, 04317 Leipzig, Germany.
- Collaborative Research Center (SFB-TR67), Matrixengineering Leipzig and Dresden, Germany.
| |
Collapse
|
32
|
Tonazzini I, Moffa M, Pisignano D, Cecchini M. Neuregulin 1 functionalization of organic fibers for Schwann cell guidance. NANOTECHNOLOGY 2017; 28:155303. [PMID: 28303795 DOI: 10.1088/1361-6528/aa6316] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The repair of peripheral nerve lesions is a clinical problem where the functional recovery is often far from being satisfactory, although peripheral nerves generally retain good potential for regeneration. Here, we develop a novel scaffold approach based on bioactive fibers of poly(ε-caprolactone) where nanotopographical guidance and neuregulin 1 (NRG1) cues are combined. We interface them with rat primary Schwann cells (SCs), the peripheral glial cells that drive initial regeneration of injured nerves, and found that the combination of NRG1 with parallel nano-fibrous topographies is effective in improving SC growth up to 72 h, alignment to fiber topography, and bipolar differentiation, opening original perspectives for nerve repair applications.
Collapse
Affiliation(s)
- Ilaria Tonazzini
- NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, Pisa I-56127, Italy. Fondazione Umberto Veronesi, Piazza Velasca 5, Milan I-20122, Italy
| | | | | | | |
Collapse
|
33
|
Nerve regeneration by human corneal stromal keratocytes and stromal fibroblasts. Sci Rep 2017; 7:45396. [PMID: 28349952 PMCID: PMC5369053 DOI: 10.1038/srep45396] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 02/23/2017] [Indexed: 01/12/2023] Open
Abstract
Laser refractive surgeries reshape corneal stroma to correct refractive errors, but unavoidably affect corneal nerves. Slow nerve regeneration and atypical neurite morphology cause desensitization and neuro-epitheliopathy. Following injury, surviving corneal stromal keratocytes (CSKs) are activated to stromal fibroblasts (SFs). How these two different cell types influence nerve regeneration is elusive. Our study evaluated the neuro-regulatory effects of human SFs versus CSKs derived from the same corneal stroma using an in vitro chick dorsal root ganglion model. The neurite growth was assessed by a validated concentric circle intersection count method. Serum-free conditioned media (CM) from SFs promoted neurite growth dose-dependently, compared to that from CSKs. We detected neurotrophic and pro-inflammatory factors (interleukin-8, interleukin-15, monocyte chemoattractant protein-1, eotaxin, RANTES) in SFCM by Bio-Plex Human Cytokine assay. More than 130 proteins in SFCM and 49 in CSKCM were identified by nanoLC-MS/MS. Proteins uniquely present in SFCM had reported neuro-regulatory activities and were predicted to regulate neurogenesis, focal adhesion and wound healing. Conclusively, this was the first study showing a physiological relationship between nerve growth and the metabolically active SFs versus quiescent CSKs from the same cornea source. The dose-dependent effect on neurite growth indicated that nerve regeneration could be influenced by SF density.
Collapse
|
34
|
Simitzi C, Ranella A, Stratakis E. Controlling the morphology and outgrowth of nerve and neuroglial cells: The effect of surface topography. Acta Biomater 2017; 51:21-52. [PMID: 28069509 DOI: 10.1016/j.actbio.2017.01.023] [Citation(s) in RCA: 133] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 12/23/2016] [Accepted: 01/05/2017] [Indexed: 02/07/2023]
Abstract
Unlike other tissue types, like epithelial tissue, which consist of cells with a much more homogeneous structure and function, the nervous tissue spans in a complex multilayer environment whose topographical features display a large spectrum of morphologies and size scales. Traditional cell cultures, which are based on two-dimensional cell-adhesive culture dishes or coverslips, are lacking topographical cues and mainly simulate the biochemical microenvironment of the cells. With the emergence of micro- and nano-fabrication techniques new types of cell culture platforms are developed, where the effect of various topographical cues on cellular morphology, proliferation and differentiation can be studied. Different approaches (regarding the material, fabrication technique, topographical characteristics, etc.) have been implemented. The present review paper aims at reviewing the existing body of literature on the use of artificial micro- and nano-topographical features to control neuronal and neuroglial cells' morphology, outgrowth and neural network topology. The cell responses-from phenomenology to investigation of the underlying mechanisms- on the different topographies, including both deterministic and random ones, are summarized. STATEMENT OF SIGNIFICANCE There is increasing evidence that physical cues, such as topography, can have a significant impact on the neural cell functions. With the aid of micro-and nanofabrication techniques, new types of cell culture platforms are developed and the effect of surface topography on the cells has been studied. The present review article aims at reviewing the existing body of literature reporting on the use of various topographies to study and control the morphology and functions of cells from nervous tissue, i.e. the neuronal and the neuroglial cells. The cell responses-from phenomenology to investigation of the underlying mechanisms- on the different topographies, including both deterministic and random ones, are summarized.
Collapse
Affiliation(s)
- C Simitzi
- Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology-Hellas (FORTH), Heraklion 71003, Greece
| | - A Ranella
- Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology-Hellas (FORTH), Heraklion 71003, Greece
| | - E Stratakis
- Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology-Hellas (FORTH), Heraklion 71003, Greece.
| |
Collapse
|
35
|
Hu J, Kai D, Ye H, Tian L, Ding X, Ramakrishna S, Loh XJ. Electrospinning of poly(glycerol sebacate)-based nanofibers for nerve tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:1089-1094. [DOI: 10.1016/j.msec.2016.03.035] [Citation(s) in RCA: 155] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 02/16/2016] [Accepted: 03/13/2016] [Indexed: 11/16/2022]
|
36
|
Lü X, Yang F, Huang Y, Yu Y. Role of integrin in influencing differentiation of PC12 cell grown on PLLA-aligned nanofiber: a mRNA–microRNA–protein integrative study. Regen Biomater 2016. [DOI: 10.1093/rb/rbw040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Xiaoying Lü
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, PR China
- Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, PR China
| | - Fei Yang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, PR China
| | - Yan Huang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, PR China
| | - Yadong Yu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, PR China
| |
Collapse
|
37
|
Yao S, Liu X, Yu S, Wang X, Zhang S, Wu Q, Sun X, Mao H. Co-effects of matrix low elasticity and aligned topography on stem cell neurogenic differentiation and rapid neurite outgrowth. NANOSCALE 2016; 8:10252-65. [PMID: 27124547 DOI: 10.1039/c6nr01169a] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The development of novel biomaterials that deliver precise regulatory signals to direct stem cell fate for nerve regeneration is the focus of current intensive research efforts. In this study, a hierarchically aligned fibrillar fibrin hydrogel (AFG) that was fabricated through electrospinning and the concurrent molecular self-assembly process mimics both the soft and oriented features of nerve tissue, thus providing hybrid biophysical cues to instruct cell behavior in vitro and in vivo. The electrospun hydrogels were examined by scanning electron microscopy (SEM), polarized light microscopy, small angle X-ray scattering assay and atomic force microscopy (AFM), showing a hierarchically linear-ordered structure from the nanoscale to the macroscale with a soft elastic character (elasticity ∼1 kPa). We found that this low elasticity and aligned topography of AFG exhibit co-effects on promoting the neurogenic differentiation of human umbilical cord mesenchymal stem cells (hUMSCs) in comparison to random fibrin hydrogel (RFG) and tissue culture plate (TCP) control after two week cell culture in growth medium lacking supplementation with soluble neurogenic induction factors. In addition, AFG also induces dorsal root ganglion (DRG) neurons to rapidly project numerous long neurite outgrowths longitudinally along the AFG fibers for a total neurite extension distance of 1.96 mm in three days in the absence of neurotrophic factor supplementation. Moreover, the AFG implanted in a rat T9 dorsal hemisection spinal cord injury model was found to promote endogenous neural cell fast migration and axonal invasion along AFG fibers, resulting in aligned tissue cables in vivo. Our results suggest that matrix stiffness and aligned topography may instruct stem cell neurogenic differentiation and rapid neurite outgrowth, providing great promise for biomaterial design for applications in nerve regeneration.
Collapse
Affiliation(s)
- Shenglian Yao
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Schaub NJ, Johnson CD, Cooper B, Gilbert RJ. Electrospun Fibers for Spinal Cord Injury Research and Regeneration. J Neurotrauma 2016; 33:1405-15. [PMID: 26650778 DOI: 10.1089/neu.2015.4165] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Electrospinning is the process by which a scaffold containing micrometer and nanometer diameter fibers are drawn from a polymer solution or melt using a large voltage gradient between a polymer emitting source and a grounded collector. Ramakrishna and colleagues first investigated electrospun fibers for neural applications in 2004. After this initial study, electrospun fibers are increasingly investigated for neural tissue engineering applications. Electrospun fibers robustly support axonal regeneration within in vivo rodent models of spinal cord injury. These findings suggest the possibility of their eventual use within patients. Indeed, both spinal cord and peripheral nervous system regeneration research over the last several years shows that physical guidance cues induce recovery of limb, respiration, or bladder control in rodent models. Electrospun fibers may be an alternative to the peripheral nerve graft (PNG), because PNG autografts injure the patient and are limited in supply, and allografts risk host rejection. In addition, electrospun fibers can be engineered easily to confront new therapeutic challenges. Fibers can be modified to release therapies locally or can be physically modified to direct neural stem cell differentiation. This review summarizes the major findings and trends in the last decade of research, with a particular focus on spinal cord injury. This review also demonstrates how electrospun fibers can be used to study the central nervous system in vitro.
Collapse
Affiliation(s)
- Nicholas J Schaub
- 1 Center for Biotechnology and Interdisciplinary Studies, Rensselear Polytechnic Institute , Troy, New York.,2 Department of Biomedical Engineering, Rensselear Polytechnic Institute , Troy, New York
| | - Christopher D Johnson
- 1 Center for Biotechnology and Interdisciplinary Studies, Rensselear Polytechnic Institute , Troy, New York.,2 Department of Biomedical Engineering, Rensselear Polytechnic Institute , Troy, New York
| | | | - Ryan J Gilbert
- 1 Center for Biotechnology and Interdisciplinary Studies, Rensselear Polytechnic Institute , Troy, New York.,2 Department of Biomedical Engineering, Rensselear Polytechnic Institute , Troy, New York
| |
Collapse
|
39
|
Hu J, Seeberger PH, Yin J. Using carbohydrate-based biomaterials as scaffolds to control human stem cell fate. Org Biomol Chem 2016; 14:8648-58. [DOI: 10.1039/c6ob01124a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review describes the current state and applications of several important and extensively studied natural polysaccharide and glycoprotein scaffolds that can control the stem cell fate.
Collapse
Affiliation(s)
- Jing Hu
- Wuxi Medical School
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education
- School of Biotechnology
- Jiangnan University
- Wuxi 214122
| | - Peter H. Seeberger
- Department of Biomolecular Systems
- Max Planck Institute of Colloids and Interfaces
- 14476 Potsdam
- Germany
| | - Jian Yin
- Wuxi Medical School
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education
- School of Biotechnology
- Jiangnan University
- Wuxi 214122
| |
Collapse
|
40
|
Peng S, Jin G, Li L, Li K, Srinivasan M, Ramakrishna S, Chen J. Multi-functional electrospun nanofibres for advances in tissue regeneration, energy conversion & storage, and water treatment. Chem Soc Rev 2016; 45:1225-1241. [DOI: 10.1039/c5cs00777a] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
This Tutorial Review focuses on recent applications of electrospun materials in tissue regeneration, energy conversion & storage, and water treatment areas.
Collapse
Affiliation(s)
- Shengjie Peng
- Department of Mechanical Engineering
- National University of Singapore
- Singapore
| | - Guorui Jin
- Key Laboratory of Biomedical Information Engineering (Ministry of Education)
- School of Life Science and Technology
- Xi'an Jiaotong University
- Xi'an
- China
| | - Linlin Li
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore
| | - Kai Li
- Institute of Materials Research and Engineering
- Agency for Science
- Technology and Research (A*STAR)
- Singapore
| | - Madhavi Srinivasan
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore
| | - Seeram Ramakrishna
- Department of Mechanical Engineering
- National University of Singapore
- Singapore
| | - Jun Chen
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
- Collaborative Innovation Center of Chemical Science and Engineering
- Nankai University
- Tianjin
- China
| |
Collapse
|
41
|
Assunção-Silva RC, Oliveira CC, Ziv-Polat O, Gomes ED, Sahar A, Sousa N, Silva NA, Salgado AJ. Induction of neurite outgrowth in 3D hydrogel-based environments. Biomed Mater 2015; 10:051001. [DOI: 10.1088/1748-6041/10/5/051001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
42
|
Schaub NJ, Le Beux C, Miao J, Linhardt RJ, Alauzun JG, Laurencin D, Gilbert RJ. The Effect of Surface Modification of Aligned Poly-L-Lactic Acid Electrospun Fibers on Fiber Degradation and Neurite Extension. PLoS One 2015; 10:e0136780. [PMID: 26340351 PMCID: PMC4560380 DOI: 10.1371/journal.pone.0136780] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 08/07/2015] [Indexed: 11/18/2022] Open
Abstract
The surface of aligned, electrospun poly-L-lactic acid (PLLA) fibers was chemically modified to determine if surface chemistry and hydrophilicity could improve neurite extension from chick dorsal root ganglia. Specifically, diethylenetriamine (DTA, for amine functionalization), 2-(2-aminoethoxy)ethanol (AEO, for alcohol functionalization), or GRGDS (cell adhesion peptide) were covalently attached to the surface of electrospun fibers. Water contact angle measurements revealed that surface modification of electrospun fibers significantly improved fiber hydrophilicity compared to unmodified fibers (p < 0.05). Scanning electron microscopy (SEM) of fibers revealed that surface modification changed fiber topography modestly, with DTA modified fibers displaying the roughest surface structure. Degradation of chemically modified fibers revealed no change in fiber diameter in any group over a period of seven days. Unexpectedly, neurites from chick DRG were longest on fibers without surface modification (1651 ± 488 μm) and fibers containing GRGDS (1560 ± 107 μm). Fibers modified with oxygen plasma (1240 ± 143 μm) or DTA (1118 ± 82 μm) produced shorter neurites than the GRGDS or unmodified fibers, but were not statistically shorter than unmodified and GRGDS modified fibers. Fibers modified with AEO (844 ± 151 μm) were significantly shorter than unmodified and GRGDS modified fibers (p<0.05). Based on these results, we conclude that fiber hydrophilic enhancement alone on electrospun PLLA fibers does not enhance neurite outgrowth. Further work must be conducted to better understand why neurite extension was not improved on more hydrophilic fibers, but the results presented here do not recommend hydrophilic surface modification for the purpose of improving neurite extension unless a bioactive ligand is used.
Collapse
Affiliation(s)
- Nicholas J. Schaub
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, 12180–3590, United States of America
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180–3590, United States of America
| | - Clémentine Le Beux
- Institut Charles Gerhardt de Montpellier, UMR 5253, CNRS-UM-ENSCM, Université de Montpellier, CC 1701, Place E. Bataillon, F-34095 Montpellier cedex 05, France
| | - Jianjun Miao
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, 12180–3590, United States of America
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, 110 8 Street, Troy, NY, 12180–3590, United States of America
| | - Robert J. Linhardt
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, 12180–3590, United States of America
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180–3590, United States of America
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, 110 8 Street, Troy, NY, 12180–3590, United States of America
- Department of Biology, Rensselaer Polytechnic Institute, 110 8 Street, Troy, NY, 12180–3590, United States of America
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY, 12180–3590, United States of America
| | - Johan G. Alauzun
- Institut Charles Gerhardt de Montpellier, UMR 5253, CNRS-UM-ENSCM, Université de Montpellier, CC 1701, Place E. Bataillon, F-34095 Montpellier cedex 05, France
| | - Danielle Laurencin
- Institut Charles Gerhardt de Montpellier, UMR 5253, CNRS-UM-ENSCM, Université de Montpellier, CC 1701, Place E. Bataillon, F-34095 Montpellier cedex 05, France
| | - Ryan J. Gilbert
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, 12180–3590, United States of America
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180–3590, United States of America
| |
Collapse
|
43
|
Simitzi C, Efstathopoulos P, Kourgiantaki A, Ranella A, Charalampopoulos I, Fotakis C, Athanassakis I, Stratakis E, Gravanis A. Laser fabricated discontinuous anisotropic microconical substrates as a new model scaffold to control the directionality of neuronal network outgrowth. Biomaterials 2015. [PMID: 26210178 DOI: 10.1016/j.biomaterials.2015.07.008] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Patterning of neuronal outgrowth in vitro is important in tissue engineering as well as for the development of neuronal interfaces with desirable characteristics. To date, this has been achieved with the aid of micro- and nanofabrication techniques giving rise to various anisotropic topographies, either in the form of continuous or discontinuous structures. In this study we propose a currently unexplored geometry of a 3D culture substrate for neuronal cell growth comprising discontinuous subcellular microstructures with anisotropic geometrical cross-section. Specifically, using laser precision 3D micro/nano fabrication techniques, silicon substrates comprising arrays of parallel oriented elliptical microcones (MCs) were fabricated to investigate whether a discontinuous geometry comprising anisotropic features at the subcellular level could influence the alignment of peripheral nervous system cell populations. It was shown that both Schwann cells and axons of sympathetic neurons were parallel oriented onto the MCs of elliptical shape, while they exhibited a random orientation onto the MCs of arbitrary shape. Notably, this topography-induced guidance effect was also observed in more complex cell culture systems, such as the organotypic culture whole dorsal root ganglia (DRG) explants. Our results suggest that a discontinuous topographical pattern could promote Schwann cell and axonal alignment, provided that it hosts anisotropic geometrical features, even though the sizes of those range at the subcellular lengthscale. The laser-patterned arrays of MCs presented here could potentially be a useful platform for patterning neurons into artificial networks, allowing the study of neuronal cells interactions under 3D ex-vivo conditions.
Collapse
Affiliation(s)
- C Simitzi
- Foundation for Research and Technology-Hellas (F.O.R.T.H.), Institute of Electronic Structure and Laser (I.E.S.L.), Heraklion, Greece; Department of Biology, University of Crete, Heraklion, Greece
| | - P Efstathopoulos
- Department of Pharmacology, School of Medicine, University of Crete, Heraklion, Greece
| | - A Kourgiantaki
- Department of Pharmacology, School of Medicine, University of Crete, Heraklion, Greece
| | - A Ranella
- Foundation for Research and Technology-Hellas (F.O.R.T.H.), Institute of Electronic Structure and Laser (I.E.S.L.), Heraklion, Greece
| | - I Charalampopoulos
- Department of Pharmacology, School of Medicine, University of Crete, Heraklion, Greece
| | - C Fotakis
- Foundation for Research and Technology-Hellas (F.O.R.T.H.), Institute of Electronic Structure and Laser (I.E.S.L.), Heraklion, Greece; Department of Physics, University of Crete, Heraklion, Greece
| | - I Athanassakis
- Department of Biology, University of Crete, Heraklion, Greece
| | - E Stratakis
- Foundation for Research and Technology-Hellas (F.O.R.T.H.), Institute of Electronic Structure and Laser (I.E.S.L.), Heraklion, Greece; Department of Materials Science and Technology, University of Crete, Heraklion, Greece.
| | - A Gravanis
- Foundation for Research and Technology-Hellas (F.O.R.T.H.), Institute of Electronic Structure and Laser (I.E.S.L.), Heraklion, Greece; Department of Pharmacology, School of Medicine, University of Crete, Heraklion, Greece
| |
Collapse
|
44
|
Ren T, Yu S, Mao Z, Gao C. A complementary density gradient of zwitterionic polymer brushes and NCAM peptides for selectively controlling directional migration of Schwann cells. Biomaterials 2015; 56:58-67. [DOI: 10.1016/j.biomaterials.2015.03.052] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Revised: 03/26/2015] [Accepted: 03/27/2015] [Indexed: 12/13/2022]
|
45
|
Mehrban N, Zhu B, Tamagnini F, Young FI, Wasmuth A, Hudson KL, Thomson AR, Birchall MA, Randall AD, Song B, Woolfson DN. Functionalized α-Helical Peptide Hydrogels for Neural Tissue Engineering. ACS Biomater Sci Eng 2015; 1:431-439. [PMID: 26240838 PMCID: PMC4517957 DOI: 10.1021/acsbiomaterials.5b00051] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 04/28/2015] [Indexed: 12/31/2022]
Abstract
![]()
Trauma to the central and peripheral
nervous systems often lead
to serious morbidity. Current surgical methods for repairing or replacing
such damage have limitations. Tissue engineering offers a potential
alternative. Here we show that functionalized α-helical-peptide
hydrogels can be used to induce attachment, migration, proliferation
and differentiation of murine embryonic neural stem cells (NSCs).
Specifically, compared with undecorated gels, those functionalized
with Arg-Gly-Asp-Ser (RGDS) peptides increase the proliferative activity
of NSCs; promote their directional migration; induce differentiation,
with increased expression of microtubule-associated protein-2, and
a low expression of glial fibrillary acidic protein; and lead to the
formation of larger neurospheres. Electrophysiological measurements
from NSCs grown in RGDS-decorated gels indicate developmental progress
toward mature neuron-like behavior. Our data indicate that these functional
peptide hydrogels may go some way toward overcoming the limitations
of current approaches to nerve-tissue repair.
Collapse
Affiliation(s)
- Nazia Mehrban
- School of Chemistry, University of Bristol , Bristol BS8 1TS, United Kingdom
| | - Bangfu Zhu
- School of Dentistry, Cardiff University , Cardiff CF10 3XQ, United Kingdom
| | | | - Fraser I Young
- School of Dentistry, Cardiff University , Cardiff CF10 3XQ, United Kingdom
| | - Alexandra Wasmuth
- School of Chemistry, University of Bristol , Bristol BS8 1TS, United Kingdom
| | - Kieran L Hudson
- School of Chemistry, University of Bristol , Bristol BS8 1TS, United Kingdom
| | - Andrew R Thomson
- School of Chemistry, University of Bristol , Bristol BS8 1TS, United Kingdom
| | - Martin A Birchall
- University College London Ear Institute , London WC1X 8DA, United Kingdom
| | - Andrew D Randall
- Medical School, University of Exeter , Exeter EX4 4PS, United Kingdom
| | - Bing Song
- School of Dentistry, Cardiff University , Cardiff CF10 3XQ, United Kingdom
| | - Derek N Woolfson
- School of Chemistry, University of Bristol , Bristol BS8 1TS, United Kingdom ; School of Biochemistry, University of Bristol , Bristol BS8 1TD, United Kingdom ; BrisSynBio, University of Bristol , Bristol BS8 1TQ, United Kingdom
| |
Collapse
|
46
|
Wu S, Liu X, Gao C. Role of adsorbed proteins on hydroxyapatite-coated titanium in osteoblast adhesion and osteogenic differentiation. Sci Bull (Beijing) 2015. [DOI: 10.1007/s11434-015-0753-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
47
|
de Luca AC, Lacour SP, Raffoul W, di Summa PG. Extracellular matrix components in peripheral nerve repair: how to affect neural cellular response and nerve regeneration? Neural Regen Res 2015; 9:1943-8. [PMID: 25598773 PMCID: PMC4283273 DOI: 10.4103/1673-5374.145366] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2014] [Indexed: 01/09/2023] Open
Abstract
Peripheral nerve injury is a serious problem affecting significantly patients’ life. Autografts are the “gold standard” used to repair the injury gap, however, only 50% of patients fully recover from the trauma. Artificial conduits are a valid alternative to repairing peripheral nerve. They aim at confining the nerve environment throughout the regeneration process, and providing guidance to axon outgrowth. Biocompatible materials have been carefully designed to reduce inflammation and scar tissue formation, but modifications of the inner lumen are still required in order to optimise the scaffolds. Biomicking the native neural tissue with extracellular matrix fillers or coatings showed great promises in repairing longer gaps and extending cell survival. In addition, extracellular matrix molecules provide a platform to further bind growth factors that can be released in the system over time. Alternatively, conduit fillers can be used for cell transplantation at the injury site, reducing the lag time required for endogenous Schwann cells to proliferate and take part in the regeneration process. This review provides an overview on the importance of extracellular matrix molecules in peripheral nerve repair.
Collapse
Affiliation(s)
- Alba C de Luca
- EPFL, Centre for Neuroprosthetics, Laboratory for Soft Bioelectronic Interfaces, Station 17, 1015 Lausanne, Switzerland
| | - Stephanie P Lacour
- EPFL, Centre for Neuroprosthetics, Laboratory for Soft Bioelectronic Interfaces, Station 17, 1015 Lausanne, Switzerland
| | - Wassim Raffoul
- Department of Plastic, Reconstructive and Hand Surgery, University Hospital of Lausanne (CHUV), Lausanne, Switzerland
| | - Pietro G di Summa
- Department of Plastic, Reconstructive and Hand Surgery, University Hospital of Lausanne (CHUV), Lausanne, Switzerland
| |
Collapse
|
48
|
Bowers DT, Tanes ML, Das A, Lin Y, Keane NA, Neal RA, Ogle ME, Brayman KL, Fraser CL, Botchwey EA. Spatiotemporal oxygen sensing using dual emissive boron dye-polylactide nanofibers. ACS NANO 2014; 8:12080-91. [PMID: 25426706 PMCID: PMC4278692 DOI: 10.1021/nn504332j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Oxygenation in tissue scaffolds continues to be a limiting factor in regenerative medicine despite efforts to induce neovascularization or to use oxygen-generating materials. Unfortunately, many established methods to measure oxygen concentration, such as using electrodes, require mechanical disturbance of the tissue structure. To address the need for scaffold-based oxygen concentration monitoring, a single-component, self-referenced oxygen sensor was made into nanofibers. Electrospinning process parameters were tuned to produce a biomaterial scaffold with specific morphological features. The ratio of an oxygen sensitive phosphorescence signal to an oxygen insensitive fluorescence signal was calculated at each image pixel to determine an oxygenation value. A single component boron dye-polymer conjugate was chosen for additional investigation due to improved resistance to degradation in aqueous media compared to a boron dye polymer blend. Standardization curves show that in fully supplemented media, the fibers are responsive to dissolved oxygen concentrations less than 15 ppm. Spatial (millimeters) and temporal (minutes) ratiometric gradients were observed in vitro radiating outward from the center of a dense adherent cell grouping on scaffolds. Sensor activation in ischemia and cell transplant models in vivo show oxygenation decreases on the scale of minutes. The nanofiber construct offers a robust approach to biomaterial scaffold oxygen sensing.
Collapse
Affiliation(s)
- Daniel T. Bowers
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Michael L. Tanes
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | - Anusuya Das
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
- Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Yong Lin
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Nicole A. Keane
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Rebekah A. Neal
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Molly E. Ogle
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | - Kenneth L. Brayman
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
- Department of Surgery, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Cassandra L. Fraser
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Edward A. Botchwey
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22908, United States
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
- Address correspondence to
| |
Collapse
|
49
|
Wen X, Wang Y, Guo Z, Meng H, Huang J, Zhang L, Zhao B, Zhao Q, Zheng Y, Peng J. Cauda equina-derived extracellular matrix for fabrication of nanostructured hybrid scaffolds applied to neural tissue engineering. Tissue Eng Part A 2014; 21:1095-105. [PMID: 25366704 DOI: 10.1089/ten.tea.2014.0173] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Extracellular matrix (ECM) components have become important candidate materials for use as neural scaffolds for neural tissue engineering. In the current study, we prepared cauda equina-derived ECM materials for the production of scaffolds. Natural porcine cauda equina was decellularized using Triton X-100 and sodium deoxycholate, shattered physically, and made into a suspension by differential centrifugation. The decellularization procedure resulted in the removal of >94% of the nuclear material and preserved the extracellular collagen and sulfated glycosaminoglycan. Immunofluorescent staining confirmed the presence of collagen type I, laminin, and fibronectin in the ECM. The cauda equine-derived ECM was blended with poly(l-lactide-co-glycolide) (PLGA) to fabricate nanostructured scaffolds using electrospinning. The incorporation of the ECM increased the hydrophilicity of the scaffolds. Fourier transform infrared spectroscopy and multiphoton-induced autofluorescence images showed the presence of the ECM in the scaffolds. ECM/PLGA scaffolds were beneficial for the survival of Schwann cells compared with scaffolds consisting of PLGA alone, and the aligned fibers could regulate cell morphologic features by modulating cellular orientation. Axons in the dorsal root ganglia explants extended to a greater extent along ECM/PLGA compared with PLGA-alone fibers. The cauda equina ECM might be a promising material for forming scaffolds for use in neural tissue engineering.
Collapse
Affiliation(s)
- Xiaoxiao Wen
- 1 School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing, P.R. China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Deng J, Ren T, Zhu J, Mao Z, Gao C. Adsorption of plasma proteins and fibronectin on poly(hydroxylethyl methacrylate) brushes of different thickness and their relationship with adhesion and migration of vascular smooth muscle cells. Regen Biomater 2014; 1:17-25. [PMID: 26814446 PMCID: PMC4669003 DOI: 10.1093/rb/rbu008] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 08/23/2014] [Indexed: 12/27/2022] Open
Abstract
The surface-grafted poly(hydroxylethyl methacrylate) (PHEMA) molecules were demonstrated to show a brush state regardless of their molecular length (molecular weight). Adsorption of proteins from 10% fetal bovine serum (FBS), fibronectin (Fn) and bovine serum albumin (BSA) was quantified by ellipsometry, revealing that the amounts of FBS and Fn decreased monotonously along with the increase of PHEMA thickness, whereas not detectable for BSA when the PHEMA thickness was larger than 6 nm. Radio immunoassay found that the adsorption of Fn from 10% FBS had no significant difference regardless of the PHEMA thickness. However, ELISA results showed that the Arg-Gly-Asp (RGD) activity of adsorbed Fn decreased with the increase of PHEMA thickness. By comparison of cellular behaviors of vascular smooth muscle cells (VSMCs) being cultured in vitro in the normal serum-containing medium and the Fn-depleted serum-containing medium, the significant role of Fn on modulating the adhesion and migration of VSMCs was verified. Taking account all the results, the Fn adsorption model and its role on linking the biomaterials surface to the VSMCs behaviors are proposed.
Collapse
Affiliation(s)
- Jun Deng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Tanchen Ren
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jiyu Zhu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhengwei Mao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| |
Collapse
|