1
|
Villard C. Spatial confinement: A spur for axonal growth. Semin Cell Dev Biol 2023; 140:54-62. [PMID: 35927121 DOI: 10.1016/j.semcdb.2022.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 07/16/2022] [Accepted: 07/16/2022] [Indexed: 01/28/2023]
Abstract
The concept of spatial confinement is the basis of cell positioning and guidance in in vitro studies. In vivo, it reflects many situations faced during embryonic development. In vitro, spatial confinement of neurons is achieved using different technological approaches: adhesive patterning, topographical structuring, microfluidics and the use of hydrogels. The notion of chemical or physical frontiers is particularly central to the behaviors of growth cones and neuronal processes under confinement. They encompass phenomena of cell spreading, boundary crossing, and path finding on surfaces with different adhesive properties. However, the most universal phenomenon related to confinement, regardless of how it is implemented, is the acceleration of neuronal growth. Overall, a bi-directional causal link emerges between the shape of the growth cone and neuronal elongation dynamics, both in vivo and in vitro. The sensing of adhesion discontinuities by filopodia and the subsequent spatial redistribution and size adaptation of these actin-rich filaments seem critical for the growth rate in conditions in which adhesive contacts and actin-associated clutching forces dominate. On the other hand, the involvement of microtubules, specifically demonstrated in 3D hydrogel environments and leading to ameboid-like locomotion, could be relevant in a wider range of growth situations. This review brings together a literature collected in distinct scientific fields such as development, mechanobiology and bioengineering that highlight the consequences of confinement and raise new questions at different cellular scales. Its ambition is to stimulate new research that could lead to a better understanding of what gives neurons their ability to establish and regulate their exceptional size.
Collapse
Affiliation(s)
- Catherine Villard
- Laboratoire Interdisciplinaire des Energies de Demain (LIED), Université Paris Cité, UMR 8236 CNRS, F-75013 Paris, France.
| |
Collapse
|
2
|
Andolfi A, Arnaldi P, Lisa DD, Pepe S, Frega M, Fassio A, Lagazzo A, Martinoia S, Pastorino L. A micropatterned thermoplasmonic substrate for neuromodulation of in vitro neuronal networks. Acta Biomater 2023; 158:281-291. [PMID: 36563774 DOI: 10.1016/j.actbio.2022.12.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 12/05/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022]
Abstract
Understanding how the spatial organization of a neural network affects its activity represents a leading issue in neuroscience. Thanks to their accessibility and easy handling, in vitro studies remain an essential tool to investigate the relationship between the structure and function of a neuronal network. Among all the patterning techniques, ink-jet printing acquired great interest thanks to its direct-write approach, which allows the patterned substrate realization without mold, leading to a considerable saving of both cost and time. However, the inks commonly used give the possibility to control only the structure of a neuronal network, leaving aside the functional aspect. In this work, we synthesize a photosensitive ink combining the rheological and bioadhesive properties of chitosan with the plasmonic properties of gold nanorods, obtaining an ink able to control both the spatial organization of a two-dimensional neuronal network and its activity through photothermal effect. After the ink characterization, we demonstrate that it is possible to print, with high precision, different geometries on a microelectrode array. In this way, it is possible obtaining a patterned device to control the structure of a neuronal network, to record its activity and to modulate it via photothermal effect. Finally, to our knowledge, we report the first evidence of photothermal inhibition of human neurons activity. STATEMENT OF SIGNIFICANCE: Patterned cell cultures remain the most efficient and simple tool for linking structural and functional studies, especially in the neuronal field. Ink-jet printing is the technique with which it is possible to realize patterned structures in the fastest, simple, versatile and low-cost way. However, the inks currently used permit the control only of the neuronal network structure but do not allow the control-modulation of the network activity. In this study, we realize and characterize a photosensitive bioink with which it is possible to drive both the structure and the activity of a neuronal network. Moreover, we report the first evidence of activity inhibition by the photothermal effect on human neurons as far as we know.
Collapse
Affiliation(s)
- Andrea Andolfi
- Department of Informatics, Bioengineering, Robotics and Systems Engineering (DIBRIS), University of Genoa, Genoa, Italy.
| | - Pietro Arnaldi
- Department of Informatics, Bioengineering, Robotics and Systems Engineering (DIBRIS), University of Genoa, Genoa, Italy.
| | - Donatella Di Lisa
- Department of Informatics, Bioengineering, Robotics and Systems Engineering (DIBRIS), University of Genoa, Genoa, Italy.
| | - Sara Pepe
- Department of Experimental Medicine, University of Genoa, Genoa, Italy.
| | - Monica Frega
- Department of Clinical Neurophysiology, University of Twente, Enschede, the Netherlands.
| | - Anna Fassio
- Department of Experimental Medicine, University of Genoa, Genoa, Italy.
| | - Alberto Lagazzo
- Department of Civil, Chemical and Environmental Engineering (DICCA), University of Genoa, Genoa, Italy.
| | - Sergio Martinoia
- Department of Informatics, Bioengineering, Robotics and Systems Engineering (DIBRIS), University of Genoa, Genoa, Italy.
| | - Laura Pastorino
- Department of Informatics, Bioengineering, Robotics and Systems Engineering (DIBRIS), University of Genoa, Genoa, Italy.
| |
Collapse
|
3
|
Sun W, Taylor CS, Zhang Y, Gregory DA, Tomeh MA, Haycock JW, Smith PJ, Wang F, Xia Q, Zhao X. Cell guidance on peptide micropatterned silk fibroin scaffolds. J Colloid Interface Sci 2021; 603:380-390. [PMID: 34186409 DOI: 10.1016/j.jcis.2021.06.086] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 05/27/2021] [Accepted: 06/14/2021] [Indexed: 12/25/2022]
Abstract
Guiding neuronal cell growth is desirable for neural tissue engineering but is very challenging. In this work, a self-assembling ultra-short surfactant-like peptide I3K which possesses positively charged lysine head groups, and hydrophobic isoleucine tails, was chosen to investigate its potential for guiding neuronal cell growth. The peptides were able to self-assemble into nanofibrous structures and interact strongly with silk fibroin (SF) scaffolds, providing a niche for neural cell attachment and proliferation. SF is an excellent biomaterial for tissue engineering. However neuronal cells, such as rat PC12 cells, showed poor attachment on pure regenerated SF (RSF) scaffold surfaces. Patterning of I3K peptide nanofibers on RSF surfaces significantly improved cellular attachment, cellular density, as well as morphology of PC12 cells. The live / dead assay confirmed that RSF and I3K have negligible cytotoxicity against PC12 cells. Atomic force microscopy (AFM) was used to image the topography and neurite formation of PC12 cells, where results revealed that self-assembled I3K nanofibers can support the formation of PC12 cell neurites. Immunolabelling also demonstrated that coating of I3K nanofibers onto the RSF surfaces not only increased the percentage of cells bearing neurites but also increased the average maximum neurite length. Therefore, the peptide I3K could be used as an alternative to poly-l-lysine for cell culture and tissue engineering applications. As micro-patterning of neural cells to guide neurite growth is important for developing nerve tissue engineering scaffolds, inkjet printing was used to pattern self-assembled I3K peptide nanofibers on RSF surfaces for directional control of PC12 cell growth. The results demonstrated that inkjet-printed peptide micro-patterns can effectively guide the cell alignment and organization on RSF scaffold surfaces, providing great potential for nerve regeneration applications.
Collapse
Affiliation(s)
- Weizhen Sun
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | - Caroline S Taylor
- Department of Materials Science & Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | - Yi Zhang
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | - David A Gregory
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK; Department of Materials Science & Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | - Mhd Anas Tomeh
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | - John W Haycock
- Department of Materials Science & Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | - Patrick J Smith
- Department of Mechanical Engineering, University of Sheffield, Sheffield S1 4BJ, UK
| | - Feng Wang
- Biological Science Research Centre, Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Centre for Novel Silk Materials, Southwest University, Chongqing 400715, China
| | - Qingyou Xia
- Biological Science Research Centre, Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Centre for Novel Silk Materials, Southwest University, Chongqing 400715, China
| | - Xiubo Zhao
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK; School of Pharmacy, Changzhou University, Changzhou 213164, China.
| |
Collapse
|
4
|
Xiao M, Ulloa Severino FP, Iseppon F, Cheng G, Torre V, Tang M. 3D Free-Standing Ordered Graphene Network Geometrically Regulates Neuronal Growth and Network Formation. NANO LETTERS 2020; 20:7043-7051. [PMID: 32915578 DOI: 10.1021/acs.nanolett.0c02107] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The control of cell-microenvironment interactions plays a pivotal role in constructing specific scaffolds for tissue engineering. Here, we fabricated a 3D free-standing ordered graphene (3D-OG) network with a precisely defined pattern. When primary cortical cells are cultured on 3D-OG scaffolds, they form well-defined 3D connections. Astrocytes have a more ramified shape similar to that seen in vivo because of the nanosized ripples and wrinkles on the surface of graphene skeleton. Neurons have axons and dendrites aligned along the graphene skeleton, allowing the formation of neuronal networks with highly controlled connections. Neuronal networks have higher electrical activity with functional signaling over a long distance along the graphene skeleton. Our study, for the first time, investigated the geometrical cues on ordered neuronal growth and network formation with the support of graphene in 3D, which therefore advanced the development of customized scaffolds for brain-machine interfaces or neuroprosthetic devices.
Collapse
Affiliation(s)
- Miao Xiao
- Institute for Cardiovascular Science & Department of Cardiovascular Surgery of the First Affiliated Hospital, Medical College, Soochow University, Suzhou, Jiangsu 215000, China
- Neurobiology Sector, International School for Advanced Studies (SISSA), via Bonomea 265, Trieste 34136, Italy
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, China
| | - Francesco Paolo Ulloa Severino
- Cell Biology Department, Duke University Medical Center, 335 Nanaline Duke Building, Durham, North Carolina 27710, United States
| | - Federico Iseppon
- Molecular Nociception Group, Wolfson Institute for Biomedical Research, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - Guosheng Cheng
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, China
| | - Vincent Torre
- Neurobiology Sector, International School for Advanced Studies (SISSA), via Bonomea 265, Trieste 34136, Italy
- School of Radiation Medicine and Protection, State Key Laboratory of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China
| | - Mingliang Tang
- Institute for Cardiovascular Science & Department of Cardiovascular Surgery of the First Affiliated Hospital, Medical College, Soochow University, Suzhou, Jiangsu 215000, China
| |
Collapse
|
5
|
Moussa HI, Chan WY, Logan M, Aucoin MG, Tsui TY. Limitation in Controlling the Morphology of Mammalian Vero Cells Induced by Cell Division on Asymmetric Tungsten-Silicon Oxide Nanocomposite. MATERIALS 2020; 13:ma13020335. [PMID: 31940759 PMCID: PMC7013836 DOI: 10.3390/ma13020335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/06/2020] [Accepted: 01/07/2020] [Indexed: 12/30/2022]
Abstract
Engineered nanomaterials are often used in tissue engineering applications to influence and manipulate the behavior of cells. Recently, a number of tungsten-silicon oxide nanocomposite devices containing equal width (symmetric) tungsten and silicon oxide parallel line comb structures were developed and used by our group. The devices induced over 90% of seeded cells (Vero) to align within ±20° of the axes of 10 µm wide tungsten lines. Furthermore, a mathematical model was successfully developed to predict this alignment behavior and forecast the minimum width of isolated tungsten lines required to induce such behavior. However, the mechanism by which the widths of the symmetrical tungsten and silicon oxide lines induce the alignment behavior is still unknown. Furthermore, the model was never tested on more complex asymmetrical structures. Herewith, experiments were conducted with mammalian cells on complex asymmetrical structures with unequal tungsten and silicon oxide line widths. Results showed that the model could be extended to more complex pattern structures. In addition, cell morphology on the patterned structures reset during cell division because of mitotic rounding, which reduced the population of cells that elongated and aligned on the tungsten lines. Ultimately, we concluded that it was impossible to achieve a 100% alignment with cells having unsynchronized cell cycles because cell rounding during mitosis took precedence over cell alignment; in other words, internal chemical cues had a stronger role in cell morphology than external cues.
Collapse
Affiliation(s)
- Hassan I. Moussa
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (H.I.M.); (W.Y.C.); (M.L.); (M.G.A.)
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Wing Y. Chan
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (H.I.M.); (W.Y.C.); (M.L.); (M.G.A.)
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Megan Logan
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (H.I.M.); (W.Y.C.); (M.L.); (M.G.A.)
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Marc G. Aucoin
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (H.I.M.); (W.Y.C.); (M.L.); (M.G.A.)
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Ting Y. Tsui
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (H.I.M.); (W.Y.C.); (M.L.); (M.G.A.)
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
- Correspondence: ; Tel.: +1-519-888-4567 (ext. 38404)
| |
Collapse
|
6
|
Ha M, Athirasala A, Tahayeri A, Menezes PP, Bertassoni LE. Micropatterned hydrogels and cell alignment enhance the odontogenic potential of stem cells from apical papilla in-vitro. Dent Mater 2020; 36:88-96. [PMID: 31780101 PMCID: PMC7395926 DOI: 10.1016/j.dental.2019.10.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 10/04/2019] [Accepted: 10/24/2019] [Indexed: 12/22/2022]
Abstract
INTRODUCTION An understanding of the extracellular matrix characteristics which stimulate and guide stem cell differentiation in the dental pulp is fundamental for the development of enhanced dental regenerative therapies. Our objectives, in this study, were to determine whether stem cells from the apical papilla (SCAP) responded to substrate stiffness, whether hydrogels providing micropatterned topographical cues stimulate SCAP self-alignment, and whether the resulting alignment could influence their differentiation towards an odontogenic lineage in-vitro. METHODS Experiments utilized gelatin methacryloyl (GelMA) hydrogels of increasing concentrations (5, 10 and 15%). We determined their compressive modulus via unconfined compression and analyzed cell spreading via F-actin/DAPI immunostaining. GelMA hydrogels were micropatterned using photolithography, in order to generate microgrooves and ridges of 60 and 120μm, onto which SCAP were seeded and analyzed for self-alignment via fluorescence microscopy. Lastly, we analyzed the odontogenic differentiation of SCAP using alkaline phosphatase protein expression (ANOVA/Tukey α=0.05). RESULTS SCAP appeared to proliferate better on stiffer hydrogels. Both 60 and 120μm micropatterned hydrogels guided the self-alignment of SCAP with no significant difference between them. Similarly, both 60 and 120μm micropattern aligned cells promoted higher odontogenic differentiation than non-patterned controls. SIGNIFICANCE In summary, both substrate mechanics and geometry have a statistically significant influence on SCAP response, and may assist in the odontogenic differentiation of dental stem cells. These results may point toward the fabrication of cell-guiding scaffolds for regenerative endodontics, and may provide cues regarding the development of the pulp-dentin interface during tooth formation.
Collapse
Affiliation(s)
- Michael Ha
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health and Science University, Portland, OR, USA
| | - Avathamsa Athirasala
- Department of Biomedical Engineering, Oregon Health and Science University, Portland, OR, USA
| | - Anthony Tahayeri
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health and Science University, Portland, OR, USA
| | - Paula P Menezes
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health and Science University, Portland, OR, USA; Postgraduate Program in Health Sciences, Department of Pharmacy, Federal University of Sergipe, Aracaju, SE, Brazil
| | - Luiz E Bertassoni
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health and Science University, Portland, OR, USA; Department of Biomedical Engineering, Oregon Health and Science University, Portland, OR, USA; Center for Regenerative Medicine, Oregon Health and Science University, Portland, OR, USA; Cancer Early Detection Advanced Research, Knight Cancer Institute, Portland, OR, USA.
| |
Collapse
|
7
|
Differentiation of Bone Marrow Mesenchymal Stem Cells into Neural Lineage Cells Induced by bFGF-Chitosan Controlled Release System. BIOMED RESEARCH INTERNATIONAL 2019; 2019:5086297. [PMID: 31032349 PMCID: PMC6457308 DOI: 10.1155/2019/5086297] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 02/17/2019] [Indexed: 12/15/2022]
Abstract
Bone marrow mesenchymal stem cells undergo differentiation to different lineages with different efficiencies when induced by different factors. We added a bFGF-chitosan controlled release system (bFGF-CCRS) as an inducer into conditioned medium to facilitate the oriented differentiation of BMSCs into neural lineage cells (eventually mature neurons); furthermore, we synchronized BMSCs to the G0/G1 phase via serum starvation to observe the effect of the inducer on the differentiation direction and efficiency. The nonsynchronized group, chitosan alone (not loaded with bFGF) group, soluble bFGF group, and conditioned medium group served as controls, and we observed the dynamic process of differentiation of BMSCs into neural lineage cells at different time points after the beginning of coculture. We analyzed the binding patterns of bFGF and chitosan and assayed the expression differences of key factors (FGFR1, ERK, and c-fos) and molecular switches (BTG2) that regulate the transformation from cell proliferation to differentiation. We also investigated the potential molecular mechanism of BMSC differentiation into neural lineage cells at a high percentage when induced by bFGF-CCRS.
Collapse
|
8
|
Son YS, Choi K, Lee H, Kwon O, Jung KB, Cho S, Baek J, Son B, Kang SM, Kang M, Yoon J, Shen H, Lee S, Oh JH, Lee HA, Lee MO, Cho HS, Jung CR, Kim J, Cho S, Son MY. A SMN2 Splicing Modifier Rescues the Disease Phenotypes in an In Vitro Human Spinal Muscular Atrophy Model. Stem Cells Dev 2019; 28:438-453. [PMID: 30667343 DOI: 10.1089/scd.2018.0181] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Spinal muscular atrophy (SMA) is caused by the mutation or deletion of the survival motor neuron 1 (SMN1) gene. Only ∼10% of the products of SMN2, a paralogue of SMN1, are functional full-length SMN (SMN-FL) proteins, whereas SMN2 primarily produces alternatively spliced transcripts lacking exon 7. Reduced SMN protein levels in SMA patients lead to progressive degeneration of spinal motor neurons (MNs). In this study, we report an advanced platform based on an SMN2 splicing-targeting approach for SMA drug screening and validation using an SMN2 splicing reporter cell line and an in vitro human SMA model through induced pluripotent stem cell (iPSC) technology. Through drug screening using a robust cell-based luciferase assay to quantitatively measure SMN2 splicing, the small-molecule candidate compound rigosertib was identified as an SMN2 splicing modulator that led to enhanced SMN protein expression. The therapeutic potential of the candidate compound was validated in MN progenitors differentiated from SMA patient-derived iPSCs (SMA iPSC-pMNs) as an in vitro human SMA model, which recapitulated the biochemical and molecular phenotypes of SMA, including lower levels of SMN-FL transcripts and protein, enhanced cell death, and reduced neurite length. The candidate compound exerted strong splicing correction activity for SMN2 and potently alleviated the disease-related phenotypes of SMA iPSC-pMNs by modulating various cellular and molecular abnormalities. Our combined screening platform representing a pMN model of human SMA provides an efficient and reliable drug screening system and is a promising resource for drug evaluation and the exploration of drug modes of action.
Collapse
Affiliation(s)
- Ye Seul Son
- 1 Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,2 Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Kwangman Choi
- 3 Natural Medicine Research Center, KRIBB, Cheongju, Chungbuk, Republic of Korea
| | - Hana Lee
- 1 Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,2 Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Ohman Kwon
- 1 Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Kwang Bo Jung
- 1 Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,2 Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Sunwha Cho
- 1 Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Jiyeon Baek
- 3 Natural Medicine Research Center, KRIBB, Cheongju, Chungbuk, Republic of Korea
| | - Bora Son
- 3 Natural Medicine Research Center, KRIBB, Cheongju, Chungbuk, Republic of Korea
| | - Sung-Min Kang
- 1 Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Mingu Kang
- 3 Natural Medicine Research Center, KRIBB, Cheongju, Chungbuk, Republic of Korea.,4 Department of Biomolecular Science, KRIBB School of Bioscience, UST, Daejeon, Republic of Korea
| | - Jihee Yoon
- 1 Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,3 Natural Medicine Research Center, KRIBB, Cheongju, Chungbuk, Republic of Korea
| | - Haihong Shen
- 5 School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Sangku Lee
- 3 Natural Medicine Research Center, KRIBB, Cheongju, Chungbuk, Republic of Korea
| | - Jung-Hwa Oh
- 6 Korea Institute of Toxicology, Daejeon, Republic of Korea
| | - Hyang-Ae Lee
- 6 Korea Institute of Toxicology, Daejeon, Republic of Korea
| | - Mi-Ok Lee
- 1 Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Hyun-Soo Cho
- 1 Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,2 Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Cho-Rok Jung
- 1 Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,2 Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Janghwan Kim
- 1 Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,2 Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Sungchan Cho
- 3 Natural Medicine Research Center, KRIBB, Cheongju, Chungbuk, Republic of Korea.,4 Department of Biomolecular Science, KRIBB School of Bioscience, UST, Daejeon, Republic of Korea
| | - Mi-Young Son
- 1 Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,2 Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea
| |
Collapse
|
9
|
Pardo-Figuerez M, Martin NRW, Player DJ, Roach P, Christie SDR, Capel AJ, Lewis MP. Controlled Arrangement of Neuronal Cells on Surfaces Functionalized with Micropatterned Polymer Brushes. ACS OMEGA 2018; 3:12383-12391. [PMID: 30411006 PMCID: PMC6217525 DOI: 10.1021/acsomega.8b01698] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 09/17/2018] [Indexed: 05/03/2023]
Abstract
Conventional in vitro cultures are useful to represent simplistic neuronal behavior; however, the lack of organization results in random neurite spreading. To overcome this problem, control over the directionality of SH-SY5Y cells was attained, utilizing photolithography to pattern the cell-repulsive anionic brush poly(potassium 3-sulfopropyl methacrylate) (PKSPMA) into tracks of 20, 40, 80, and 100 μm width. These data validate the use of PKSPMA brush coatings for a long-term culture of the SH-SY5Y cells, as well as providing a methodology by which the precise deposition of PKSPMA can be utilized to achieve a targeted control over the SH-SY5Y cells. Specifically, the PKSPMA brush patterns prevented cell attachment, allowing the SH-SY5Y cells to grow only on noncoated glass (gaps of 20, 50, 75, and 100 μm width) at different cell densities (5000, 10 000, and 15 000 cells/cm2). This research demonstrates the importance of achieving cell directionality in vitro, while these simplistic models could provide new platforms to study complex neuron-neuron interactions.
Collapse
Affiliation(s)
- Maria Pardo-Figuerez
- National
Centre for Sport and Exercise Medicine (NCSEM), School of
Sport, Exercise and Health Sciences, and Department of Chemistry, School
of Science, Loughborough University, Loughborough LE11 3TU, U.K.
| | - Neil R. W. Martin
- National
Centre for Sport and Exercise Medicine (NCSEM), School of
Sport, Exercise and Health Sciences, and Department of Chemistry, School
of Science, Loughborough University, Loughborough LE11 3TU, U.K.
| | - Darren J. Player
- National
Centre for Sport and Exercise Medicine (NCSEM), School of
Sport, Exercise and Health Sciences, and Department of Chemistry, School
of Science, Loughborough University, Loughborough LE11 3TU, U.K.
- Institute
of Orthopaedics and Musculoskeletal Science, University College London, Stanmore HA7 4LP, U.K.
| | - Paul Roach
- National
Centre for Sport and Exercise Medicine (NCSEM), School of
Sport, Exercise and Health Sciences, and Department of Chemistry, School
of Science, Loughborough University, Loughborough LE11 3TU, U.K.
| | - Steven D. R. Christie
- National
Centre for Sport and Exercise Medicine (NCSEM), School of
Sport, Exercise and Health Sciences, and Department of Chemistry, School
of Science, Loughborough University, Loughborough LE11 3TU, U.K.
| | - Andrew J. Capel
- National
Centre for Sport and Exercise Medicine (NCSEM), School of
Sport, Exercise and Health Sciences, and Department of Chemistry, School
of Science, Loughborough University, Loughborough LE11 3TU, U.K.
| | - Mark P. Lewis
- National
Centre for Sport and Exercise Medicine (NCSEM), School of
Sport, Exercise and Health Sciences, and Department of Chemistry, School
of Science, Loughborough University, Loughborough LE11 3TU, U.K.
| |
Collapse
|
10
|
Moussa HI, Logan M, Chan WY, Wong K, Rao Z, Aucoin MG, Tsui TY. Pattern-Dependent Mammalian Cell (Vero) Morphology on Tantalum/Silicon Oxide 3D Nanocomposites. MATERIALS 2018; 11:ma11081306. [PMID: 30060574 PMCID: PMC6117680 DOI: 10.3390/ma11081306] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 07/22/2018] [Accepted: 07/26/2018] [Indexed: 01/06/2023]
Abstract
The primary goal of this work was to investigate the resulting morphology of a mammalian cell deposited on three-dimensional nanocomposites constructed of tantalum and silicon oxide. Vero cells were used as a model. The nanocomposite materials contained comb structures with equal-width trenches and lines. High-resolution scanning electron microscopy and fluorescence microscopy were used to image the alignment and elongation of cells. Cells were sensitive to the trench widths, and their observed behavior could be separated into three different regimes corresponding to different spreading mechanism. Cells on fine structures (trench widths of 0.21 to 0.5 μm) formed bridges across trench openings. On larger trenches (from 1 to 10 μm), cells formed a conformal layer matching the surface topographical features. When the trenches were larger than 10 μm, the majority of cells spread like those on blanket tantalum films; however, a significant proportion adhered to the trench sidewalls or bottom corner junctions. Pseudopodia extending from the bulk of the cell were readily observed in this work and a minimum effective diameter of ~50 nm was determined for stable adhesion to a tantalum surface. This sized structure is consistent with the ability of pseudopodia to accommodate ~4–6 integrin molecules.
Collapse
Affiliation(s)
- Hassan I Moussa
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1 Canada.
- Waterloo Institute of Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
| | - Megan Logan
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1 Canada.
- Waterloo Institute of Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
| | - Wing Y Chan
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1 Canada.
- Waterloo Institute of Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
| | - Kingsley Wong
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1 Canada.
- Waterloo Institute of Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
| | - Zheng Rao
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1 Canada.
- Waterloo Institute of Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
| | - Marc G Aucoin
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1 Canada.
- Waterloo Institute of Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
| | - Ting Y Tsui
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1 Canada.
- Waterloo Institute of Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
| |
Collapse
|
11
|
Moussa HI, Logan M, Siow GC, Phann DL, Rao Z, Aucoin MG, Tsui TY. Manipulating mammalian cell morphologies using chemical-mechanical polished integrated circuit chips. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2017; 18:839-856. [PMID: 29152017 PMCID: PMC5678500 DOI: 10.1080/14686996.2017.1388135] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 09/21/2017] [Accepted: 10/02/2017] [Indexed: 05/04/2023]
Abstract
Tungsten chemical-mechanical polished integrated circuits were used to study the alignment and immobilization of mammalian (Vero) cells. These devices consist of blanket silicon oxide thin films embedded with micro- and nano-meter scale tungsten metal line structures on the surface. The final surfaces are extremely flat and smooth across the entire substrate, with a roughness in the order of nanometers. Vero cells were deposited on the surface and allowed to adhere. Microscopy examinations revealed that cells have a strong preference to adhere to tungsten over silicon oxide surfaces with up to 99% of cells adhering to the tungsten portion of the surface. Cells self-aligned and elongated into long threads to maximize contact with isolated tungsten lines as thin as 180 nm. The orientation of the Vero cells showed sensitivity to the tungsten line geometric parameters, such as line width and spacing. Up to 93% of cells on 10 μm wide comb structures were aligned within ± 20° of the metal line axis. In contrast, only ~22% of cells incubated on 0.18 μm comb patterned tungsten lines were oriented within the same angular interval. This phenomenon is explained using a simple model describing cellular geometry as a function of pattern width and spacing, which showed that cells will rearrange their morphology to maximize their contact to the embedded tungsten. Finally, it was discovered that the materials could be reused after cleaning the surfaces, while maintaining cell alignment capability.
Collapse
Affiliation(s)
- Hassan I. Moussa
- Department of Chemical Engineering, University of Waterloo, Waterloo, Canada
- Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, Canada
| | - Megan Logan
- Department of Chemical Engineering, University of Waterloo, Waterloo, Canada
- Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, Canada
| | - Geoffrey C. Siow
- Department of Chemical Engineering, University of Waterloo, Waterloo, Canada
- Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, Canada
| | - Darron L. Phann
- Department of Chemical Engineering, University of Waterloo, Waterloo, Canada
- Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, Canada
| | - Zheng Rao
- Department of Chemical Engineering, University of Waterloo, Waterloo, Canada
- Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, Canada
| | - Marc G. Aucoin
- Department of Chemical Engineering, University of Waterloo, Waterloo, Canada
- Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, Canada
| | - Ting Y. Tsui
- Department of Chemical Engineering, University of Waterloo, Waterloo, Canada
- Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, Canada
- Corresponding author.
| |
Collapse
|
12
|
Affiliation(s)
- Tasneem Bouzid
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
| | | | - Jung Yul Lim
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA; Graduate School of Dentistry, Kyung Hee University, Seoul, Korea
| |
Collapse
|
13
|
Jang MJ, Kim WR, Joo S, Ryu JR, Lee E, Nam Y, Sun W. Cell-Type Dependent Effect of Surface-Patterned Microdot Arrays on Neuronal Growth. Front Neurosci 2016; 10:217. [PMID: 27242421 PMCID: PMC4870857 DOI: 10.3389/fnins.2016.00217] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 05/02/2016] [Indexed: 01/29/2023] Open
Abstract
Surface micropatterns have been widely used as chemical cues to control the microenvironment of cultured neurons, particularly for neurobiological assays and neurochip designs. However, the cell-type dependency on the interactions between neurons and underlying micropatterns has been rarely investigated despite the inherent differences in the morphology of neuronal types. In this study, we used surface-printed microdot arrays to investigate the effect of the same micropatterns on the growth of mouse spinal interneuron, mouse hippocampal neurons, and rat hippocampal neurons. While mouse hippocampal neurons showed no significantly different growth on control and patterned substrates, we found the microdot arrays had different effects on early neuronal growth depending on the cell type; spinal interneurons tended to grow faster in length, whereas hippocampal neurons tended to form more axon collateral branches in response to the microdot arrays. Although there was a similar trend in the neurite length and branch number of both neurons changed across the microdot arrays with the expanded range of size and spacing, the dominant responses of each neuron, neurite elongation of mouse spinal interneurons and branching augmentation of rat hippocampal neurons were still preserved. Therefore, our results demonstrate that the same design of micropatterns could cause different neuronal growth results, raising an intriguing issue of considering cell types in neural interface designs.
Collapse
Affiliation(s)
- Min Jee Jang
- Department of Bio and Brain Engineering, KAISTDaejeon, South Korea; Department of Anatomy, Brain Korea 21, Korea University College of MedicineSeoul, South Korea
| | - Woon Ryoung Kim
- Department of Anatomy, Brain Korea 21, Korea University College of Medicine Seoul, South Korea
| | - Sunghoon Joo
- Department of Bio and Brain Engineering, KAIST Daejeon, South Korea
| | - Jae Ryun Ryu
- Department of Anatomy, Brain Korea 21, Korea University College of Medicine Seoul, South Korea
| | - Eunsoo Lee
- Department of Bio and Brain Engineering, KAIST Daejeon, South Korea
| | - Yoonkey Nam
- Department of Bio and Brain Engineering, KAIST Daejeon, South Korea
| | - Woong Sun
- Department of Anatomy, Brain Korea 21, Korea University College of Medicine Seoul, South Korea
| |
Collapse
|
14
|
Integrated Circuit-Based Biofabrication with Common Biomaterials for Probing Cellular Biomechanics. Trends Biotechnol 2016; 34:171-186. [DOI: 10.1016/j.tibtech.2015.11.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 11/03/2015] [Accepted: 11/18/2015] [Indexed: 01/10/2023]
|
15
|
Sung CY, Yang CY, Chen WS, Wang YK, Yeh JA, Cheng CM. Probing neural cell behaviors through micro-/nano-patterned chitosan substrates. Biofabrication 2015; 7:045007. [PMID: 26685015 DOI: 10.1088/1758-5090/7/4/045007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this study, we describe the development of surface-modified chitosan substrates to examine topographically related Neuro-2a cell behaviors. Different functional groups can be modified on chitosan surfaces to probe Neuro-2a cell morphology. To prepare chitosan substrates with micro/nano-scaled features, we demonstrated an easy-to-handle method that combined photolithography, inductively coupled plasma reactive ion etching, Ag nanoparticle-assisted etching, and solution casting. The results show that Neuro-2a cells preferred to adhere to a flat chitosan surface rather than a nanotextured chitosan surface as evidenced by greater immobilization and differentiation, suggesting that surface topography is crucial for neural patterning. In addition, we developed chitosan substrates with different geometric patterns and flat region depth; this allowed us to re-arrange or re-pattern Neuro-2a cell colonies at desired locations. We found that a polarity-induced micropattern provided the most suitable surface pattern for promoting neural network formation on a chitosan substrate. The cellular polarity of single Neuro-2a cell spreading correlated to a diamond-like geometry and neurite outgrowth was induced from the corners toward the grooves of the structures. This study provide greater insight into neurobiology, including neurotransmitter screening, electrophysiological stimulation platforms, and biomedical engineering.
Collapse
Affiliation(s)
- Chun-Yen Sung
- Institute of Nanoengineering and Microsystems, National Tsing Hua University, Hsinchu 30013, Taiwan
| | | | | | | | | | | |
Collapse
|
16
|
Lee JS, Lipatov A, Ha L, Shekhirev M, Andalib MN, Sinitskii A, Lim JY. Graphene substrate for inducing neurite outgrowth. Biochem Biophys Res Commun 2015; 460:267-73. [PMID: 25778866 DOI: 10.1016/j.bbrc.2015.03.023] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 03/05/2015] [Indexed: 12/27/2022]
Abstract
A few recent studies demonstrated that graphene may have cytocompatibility with several cell types. However, when assessing cell behavior on graphene, there has been no precise control over the quality of graphene, number of graphene layers, and substrate surface coverage by graphene. In this study, using well-controlled monolayer graphene film substrates we tested the cytocompatibility of graphene for human neuroblastoma (SH-SY5Y) cell culture. A large-scale monolayer graphene film grown on Cu foils by chemical vapor deposition (CVD) could be successfully transferred onto glass substrates by wet transfer technique. We observed that graphene substrate could induce enhanced neurite outgrowth, both in neurite length and number, compared with control glass substrate. Interestingly, the positive stimulatory effect by graphene was achieved even in the absence of soluble neurogenic factor, retinoic acid (RA). Key genes relevant to cell neurogenesis, e.g., neurofilament light chain (NFL), were also upregulated on graphene. Inhibitor studies suggested that the graphene stimulation of cellular neurogenesis may be achieved through focal adhesion kinase (FAK) and p38 mitogen-activated protein kinase (MAPK) cascades. Our data indicate that graphene may be exploited as a platform for neural regenerative medicine, and the suggested molecular mechanism may provide an insight into the graphene control of neural cells.
Collapse
Affiliation(s)
- Jeong Soon Lee
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - Alexey Lipatov
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - Ligyeom Ha
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - Mikhail Shekhirev
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - Mohammad Nahid Andalib
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - Alexander Sinitskii
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, USA; Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, NE 68588, USA.
| | - Jung Yul Lim
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA; The Graduate School of Dentistry, Kyung Hee University, Seoul, South Korea.
| |
Collapse
|
17
|
Stoll H, Kwon IK, Lim JY. Material and mechanical factors: new strategy in cellular neurogenesis. Neural Regen Res 2014; 9:1810-3. [PMID: 25422642 PMCID: PMC4239770 DOI: 10.4103/1673-5374.143426] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/22/2014] [Indexed: 11/04/2022] Open
Abstract
Since damaged neural circuits are not generally self-recovered, developing methods to stimulate neurogenesis is critically required. Most studies have examined the effects of soluble pharmacological factors on the cellular neurogenesis. On the other hand, it is now recognized that the other extracellular factors, including material and mechanical cues, also have a strong potential to induce cellular neurogenesis. This article will review recent data on the material (chemical patterning, micro/nano-topography, carbon nanotube, graphene) and mechanical (static cue from substrate stiffness, dynamic cue from stretch and flow shear) stimulations of cellular neurogenesis. These approaches may provide new neural regenerative medicine protocols. Scaffolding material templates capable of triggering cellular neurogenesis can be explored in the presence of neurogenesis-stimulatory mechanical environments, and also with conventional soluble factors, to enhance axonal growth and neural network formation in neural tissue engineering.
Collapse
Affiliation(s)
- Hillary Stoll
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Il Keun Kwon
- The Graduate School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Jung Yul Lim
- The Graduate School of Dentistry, Kyung Hee University, Seoul, Korea ; Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
| |
Collapse
|
18
|
Benzina O, Cloitre T, Martin M, Raoul C, Gergely C, Scamps F. Morphology and intrinsic excitability of regenerating sensory and motor neurons grown on a line micropattern. PLoS One 2014; 9:e110687. [PMID: 25329060 PMCID: PMC4203813 DOI: 10.1371/journal.pone.0110687] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 09/15/2014] [Indexed: 12/03/2022] Open
Abstract
Axonal regeneration is one of the greatest challenges in severe injuries of peripheral nerve. To provide the bridge needed for regeneration, biological or synthetic tubular nerve constructs with aligned architecture have been developed. A key point for improving axonal regeneration is assessing the effects of substrate geometry on neuronal behavior. In the present study, we used an extracellular matrix-micropatterned substrate comprising 3 µm wide lines aimed to physically mimic the in vivo longitudinal axonal growth of mice peripheral sensory and motor neurons. Adult sensory neurons or embryonic motoneurons were seeded and processed for morphological and electrical activity analyses after two days in vitro. We show that micropattern-guided sensory neurons grow one or two axons without secondary branching. Motoneurons polarity was kept on micropattern with a long axon and small dendrites. The micro-patterned substrate maintains the growth promoting effects of conditioning injury and demonstrates, for the first time, that neurite initiation and extension could be differentially regulated by conditioning injury among DRG sensory neuron subpopulations. The micro-patterned substrate impacts the excitability of sensory neurons and promotes the apparition of firing action potentials characteristic for a subclass of mechanosensitive neurons. The line pattern is quite relevant for assessing the regenerative and developmental growth of sensory and motoneurons and offers a unique model for the analysis of the impact of geometry on the expression and the activity of mechanosensitive channels in DRG sensory neurons.
Collapse
Affiliation(s)
- Ouafa Benzina
- Université Montpellier 2, Laboratoire Charles Coulomb UMR 5221, Montpellier, France
- CNRS, Laboratoire Charles Coulomb UMR 5221, Montpellier, France
| | - Thierry Cloitre
- Université Montpellier 2, Laboratoire Charles Coulomb UMR 5221, Montpellier, France
- CNRS, Laboratoire Charles Coulomb UMR 5221, Montpellier, France
| | - Marta Martin
- Université Montpellier 2, Laboratoire Charles Coulomb UMR 5221, Montpellier, France
- CNRS, Laboratoire Charles Coulomb UMR 5221, Montpellier, France
| | - Cédric Raoul
- Institut National de la Santé et de la Recherche Médicale, Inserm UMR1051, the neuroscience institute of Montpellier, Saint Eloi hospital, Montpellier, France
- Université Montpellier 1, 2, Montpellier, France
| | - Csilla Gergely
- Université Montpellier 2, Laboratoire Charles Coulomb UMR 5221, Montpellier, France
- CNRS, Laboratoire Charles Coulomb UMR 5221, Montpellier, France
| | - Frédérique Scamps
- Institut National de la Santé et de la Recherche Médicale, Inserm UMR1051, the neuroscience institute of Montpellier, Saint Eloi hospital, Montpellier, France
- Université Montpellier 1, 2, Montpellier, France
- * E-mail:
| |
Collapse
|
19
|
Gattazzo F, De Maria C, Whulanza Y, Taverni G, Ahluwalia A, Vozzi G. Realisation and characterization of conductive hollow fibers for neuronal tissue engineering. J Biomed Mater Res B Appl Biomater 2014; 103:1107-19. [DOI: 10.1002/jbm.b.33297] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 08/16/2014] [Accepted: 09/12/2014] [Indexed: 12/13/2022]
Affiliation(s)
- Francesca Gattazzo
- Research Center “E. Piaggio,” University of Pisa; Largo Lucio Lazzarino 1 Pisa 56122 Italy
- Department of Molecular Medicine; University of Padova; Padova 35131 Italy
| | - Carmelo De Maria
- Research Center “E. Piaggio,” University of Pisa; Largo Lucio Lazzarino 1 Pisa 56122 Italy
- Department of Ingegneria dell'Informazione; University of Pisa; Via G. Caruso 16 Pisa 56122 Italy
| | - Yudan Whulanza
- Research Center “E. Piaggio,” University of Pisa; Largo Lucio Lazzarino 1 Pisa 56122 Italy
| | - Gemma Taverni
- Research Center “E. Piaggio,” University of Pisa; Largo Lucio Lazzarino 1 Pisa 56122 Italy
| | - Arti Ahluwalia
- Research Center “E. Piaggio,” University of Pisa; Largo Lucio Lazzarino 1 Pisa 56122 Italy
- Department of Ingegneria dell'Informazione; University of Pisa; Via G. Caruso 16 Pisa 56122 Italy
| | - Giovanni Vozzi
- Research Center “E. Piaggio,” University of Pisa; Largo Lucio Lazzarino 1 Pisa 56122 Italy
- Department of Ingegneria dell'Informazione; University of Pisa; Via G. Caruso 16 Pisa 56122 Italy
| |
Collapse
|
20
|
Shrirao AB, Kung FH, Yip D, Cho CH, Townes-Anderson E. Vacuum-assisted fluid flow in microchannels to pattern substrates and cells. Biofabrication 2014; 6:035016. [PMID: 24989641 PMCID: PMC4226435 DOI: 10.1088/1758-5082/6/3/035016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Substrate and cell patterning are widely used techniques in cell biology to study cell-to-cell and cell-substrate interactions. Conventional patterning techniques work well only with simple shapes, small areas and selected bio-materials. This paper describes a method to distribute cell suspensions as well as substrate solutions into complex, long, closed (dead-end) polydimethylsiloxane (PDMS) microchannels using negative pressure. Our method builds upon a previous vacuum-assisted method used for micromolding (Jeon et al 1999 Adv. Mater 11 946) and successfully patterned collagen-I, fibronectin and Sal-1 substrates on glass and polystyrene surfaces, filling microchannels with lengths up to 120 mm and covering areas up to 13 × 10 mm(2). Vacuum-patterned substrates were subsequently used to culture mammalian PC12 and fibroblast cells and amphibian neurons. Cells were also patterned directly by injecting cell suspensions into microchannels using vacuum. Fibroblast and neuronal cells patterned using vacuum showed normal growth and minimal cell death indicating no adverse effects of vacuum on cells. Our method fills reversibly sealed PDMS microchannels. This enables the user to remove the PDMS microchannel cast and access the patterned biomaterial or cells for further experimental purposes. Overall, this is a straightforward technique that has broad applicability for cell biology.
Collapse
Affiliation(s)
- Anil B. Shrirao
- Department of Neurology and Neuroscience, Rutgers University, New Jersey Medical School, Newark, USA
| | - Frank H. Kung
- Joint Program in Biomedical Engineering, Rutgers University, Graduate School of Biomedical Sciences, New Jersey Institute of Technology, Newark, USA
| | - Derek Yip
- Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, USA
| | - Cheul H. Cho
- Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, USA
| | - Ellen Townes-Anderson
- Department of Neurology and Neuroscience, Rutgers University, New Jersey Medical School, Newark, USA
| |
Collapse
|
21
|
Advances in contact printing technologies of carbohydrate, peptide and protein arrays. Curr Opin Chem Biol 2014; 18:1-7. [DOI: 10.1016/j.cbpa.2013.10.022] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 09/26/2013] [Accepted: 10/01/2013] [Indexed: 12/15/2022]
|
22
|
Abstract
Establishing extracellular milieus to stimulate neuronal regeneration is a critical need in neuronal tissue engineering. Many studies have used a soluble factor (such as nerve growth factor or retinoic acid [RA]), micropatterned substrate, and electrical stimulation to induce enhanced neurogenesis in neuronal precursor cells. However, little attention has been paid to mechanical stimulation because neuronal cells are not generally recognized as being mechanically functional, a characteristic of mechanoresponsive cells such as osteoblasts, chondrocytes, and muscle cells. In this study, we performed proof-of-concept experiments to demonstrate the potential anabolic effects of mechanical stretch to enhance cellular neurogenesis. We cultured human neuroblastoma (SH-SY5Y) cells on collagen-coated membrane and applied 10% equibiaxial dynamic stretch (0.25 Hz, 120 min/d for 7 days) using a Flexcell device. Interestingly, cell stretch alone, even without a soluble neurogenic stimulatory factor (RA), produced significantly more and longer neurites than the non-RA-treated, static control. Specific neuronal differentiation and cytoskeletal markers (e.g., microtubule-associated protein 2 and neurofilament light chain) displayed compatible variations with respect to stretch stimulation.
Collapse
Affiliation(s)
- Suzanne Higgins
- Department of Biological Systems Engineering, University of Nebraska , Lincoln, Nebraska
| | | | | | | |
Collapse
|