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Toscano E, Cimmino E, Pennacchio FA, Riccio P, Poli A, Liu YJ, Maiuri P, Sepe L, Paolella G. Methods and computational tools to study eukaryotic cell migration in vitro. Front Cell Dev Biol 2024; 12:1385991. [PMID: 38887515 PMCID: PMC11180820 DOI: 10.3389/fcell.2024.1385991] [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: 02/14/2024] [Accepted: 05/13/2024] [Indexed: 06/20/2024] Open
Abstract
Cellular movement is essential for many vital biological functions where it plays a pivotal role both at the single cell level, such as during division or differentiation, and at the macroscopic level within tissues, where coordinated migration is crucial for proper morphogenesis. It also has an impact on various pathological processes, one for all, cancer spreading. Cell migration is a complex phenomenon and diverse experimental methods have been developed aimed at dissecting and analysing its distinct facets independently. In parallel, corresponding analytical procedures and tools have been devised to gain deep insight and interpret experimental results. Here we review established experimental techniques designed to investigate specific aspects of cell migration and present a broad collection of historical as well as cutting-edge computational tools used in quantitative analysis of cell motion.
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Affiliation(s)
- Elvira Toscano
- Department of Molecular Medicine and Medical Biotechnology, Università Degli Studi di Napoli “Federico II”, Naples, Italy
- CEINGE Biotecnologie Avanzate Franco Salvatore, Naples, Italy
| | - Elena Cimmino
- Department of Molecular Medicine and Medical Biotechnology, Università Degli Studi di Napoli “Federico II”, Naples, Italy
| | - Fabrizio A. Pennacchio
- Laboratory of Applied Mechanobiology, Department of Health Sciences and Technology, Zurich, Switzerland
| | - Patrizia Riccio
- Department of Molecular Medicine and Medical Biotechnology, Università Degli Studi di Napoli “Federico II”, Naples, Italy
| | | | - Yan-Jun Liu
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Paolo Maiuri
- Department of Molecular Medicine and Medical Biotechnology, Università Degli Studi di Napoli “Federico II”, Naples, Italy
| | - Leandra Sepe
- Department of Molecular Medicine and Medical Biotechnology, Università Degli Studi di Napoli “Federico II”, Naples, Italy
| | - Giovanni Paolella
- Department of Molecular Medicine and Medical Biotechnology, Università Degli Studi di Napoli “Federico II”, Naples, Italy
- CEINGE Biotecnologie Avanzate Franco Salvatore, Naples, Italy
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2
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Cai FF, Blanquer A, Costa MB, Schweiger L, Sarac B, Greer AL, Schroers J, Teichert C, Nogués C, Spieckermann F, Eckert J. Hierarchical Surface Pattern on Ni-Free Ti-Based Bulk Metallic Glass to Control Cell Interactions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310364. [PMID: 38109153 DOI: 10.1002/smll.202310364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Indexed: 12/19/2023]
Abstract
Ni-free Ti-based bulk metallic glasses (BMGs) are exciting materials for biomedical applications because of their outstanding biocompatibility and advantageous mechanical properties. The glassy nature of BMGs allows them to be shaped and patterned via thermoplastic forming (TPF). This work demonstrates the versatility of the TPF technique to create micro- and nano-patterns and hierarchical structures on Ti40Zr10Cu34Pd14Sn2 BMG. Particularly, a hierarchical structure fabricated by a two-step TPF process integrates 400 nm hexagonal close-packed protrusions on 2.5 µm square protuberances while preserving the advantageous mechanical properties from the as-cast material state. The correlations between thermal history, structure, and mechanical properties are explored. Regarding biocompatibility, Ti40Zr10Cu34Pd14Sn2 BMGs with four surface topographies (flat, micro-patterned, nano-patterned, and hierarchical-structured surfaces) are investigated using Saos-2 cell lines. Alamar Blue assay and live/dead analysis show that all tested surfaces have good cell proliferation and viability. Patterned surfaces are observed to promote the formation of longer filopodia on the edge of the cytoskeleton, leading to star-shaped and dendritic cell morphologies compared with the flat surface. In addition to potential implant applications, TPF-patterned Ti-BMGs enable a high level of order and design flexibility on the surface topography, expanding the available toolbox for studying cell behavior on rigid and ordered surfaces.
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Affiliation(s)
- Fei-Fan Cai
- Department of Materials Science, Chair of Materials Physics, Montanuniversität Leoben, Jahnstraße 12, Leoben, A-8700, Austria
- Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, Leoben, A-8700, Austria
| | - Andreu Blanquer
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Bellaterra, 08193, Spain
| | - Miguel B Costa
- Department of Materials Science & Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK
| | - Lukas Schweiger
- Department of Materials Science, Chair of Materials Physics, Montanuniversität Leoben, Jahnstraße 12, Leoben, A-8700, Austria
| | - Baran Sarac
- Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, Leoben, A-8700, Austria
| | - A Lindsay Greer
- Department of Materials Science & Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK
| | - Jan Schroers
- Department of Mechanical Engineering and Materials Science, Yale University, New Haven, CT 06511, USA
| | - Christian Teichert
- Department Physics, Mechanics and Electrical Engineering, Chair of Physics, Montanuniversität Leoben, Franz-Josef-Strasse 18, Leoben, A-8700, Austria
| | - Carme Nogués
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Bellaterra, 08193, Spain
| | - Florian Spieckermann
- Department of Materials Science, Chair of Materials Physics, Montanuniversität Leoben, Jahnstraße 12, Leoben, A-8700, Austria
| | - Jürgen Eckert
- Department of Materials Science, Chair of Materials Physics, Montanuniversität Leoben, Jahnstraße 12, Leoben, A-8700, Austria
- Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, Leoben, A-8700, Austria
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3
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Cheng Y, Pang SW. Biointerfaces with ultrathin patterns for directional control of cell migration. J Nanobiotechnology 2024; 22:158. [PMID: 38589901 PMCID: PMC11000378 DOI: 10.1186/s12951-024-02418-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 03/18/2024] [Indexed: 04/10/2024] Open
Abstract
In the context of wound healing and tissue regeneration, precise control of cell migration direction is deemed crucial. To address this challenge, polydimethylsiloxane (PDMS) platforms with patterned 10 nm thick TiOx in arrowhead shape were designed and fabricated. Remarkably, without tall sidewall constraints, MC3T3-E1 cells seeded on these platforms were constrained to migrate along the tips of the arrowheads, as the cells were guided by the asymmetrical arrowhead tips which provided large contact areas. To the best of our knowledge, this is the first study demonstrating the use of thin TiOx arrowhead pattern in combination with a cell-repellent PDMS surface to provide guided cell migration unidirectionally without tall sidewall constraints. Additionally, high-resolution fluorescence imaging revealed that the asymmetrical distribution of focal adhesions, triggered by the patterned TiOx arrowheads with arm lengths of 10, 20, and 35 μm, promoted cell adhesion and protrusion along the arrowhead tip direction, resulting in unidirectional cell migration. These findings have important implications for the design of biointerfaces with ultrathin patterns to precisely control cell migration. Furthermore, microelectrodes were integrated with the patterned TiOx arrowheads to enable dynamic monitoring of cell migration using impedance measurement. This microfluidic device integrated with thin layer of guiding pattern and microelectrodes allows simultaneous control of directional cell migration and characterization of the cell movement of individual MC3T3-E1 cells, offering great potential for the development of biosensors for single-cell monitoring.
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Grants
- CityU11207620, CityU11207821, CityU11205423 Research Grants Council of the Hong Kong Special Administrative Region, China
- CityU11207620, CityU11207821, CityU11205423 Research Grants Council of the Hong Kong Special Administrative Region, China
- 9360148, 9380062 Center for Biosystems, Neuroscience, and Nanotechnology (CBNN) of City University of Hong Kong
- 9360148, 9380062 Center for Biosystems, Neuroscience, and Nanotechnology (CBNN) of City University of Hong Kong
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Affiliation(s)
- Yijun Cheng
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
- Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Stella W Pang
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China.
- Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, China.
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4
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Kim C, Robitaille M, Christodoulides J, Ng Y, Raphael M, Kang W. Hs27 fibroblast response to contact guidance cues. Sci Rep 2023; 13:21691. [PMID: 38066191 PMCID: PMC10709656 DOI: 10.1038/s41598-023-48913-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 12/01/2023] [Indexed: 12/18/2023] Open
Abstract
Contact guidance is the phenomena of how cells respond to the topography of their external environment. The morphological and dynamic cell responses are strongly influenced by topographic features such as lateral and vertical dimensions, namely, ridge and groove widths and groove depth ([Formula: see text], respectively). However, experimental studies that independently quantify the effect of the individual dimensions as well as their coupling on cellular function are still limited. In this work, we perform extensive parametric studies in the dimensional space-well beyond the previously studied range in the literature-to explore topographical effects on morphology and migration of Hs27 fibroblasts via static and dynamic analyses of live cell images. Our static analysis reveals that the [Formula: see text] is most significant, followed by the [Formula: see text]. The fibroblasts appear to be more elongated and aligned in the groove direction as the [Formula: see text] increases, but their trend changes after 725 nm. Interestingly, the cell shape and alignment show a very strong correlation regardless of [Formula: see text]. Our dynamic analysis confirms that directional cell migration is also strongly influenced by the [Formula: see text], while the effect of the [Formula: see text] and [Formula: see text] is statistically insignificant. Directional cell migration, as observed in the static cell behavior, shows the statistically significant transition when the [Formula: see text] is 725 nm, showing the intimate links between cell morphology and migration. We propose possible scenarios to offer mechanistic explanations of the observed cell behavior.
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Affiliation(s)
- C Kim
- Mechanical Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, 85281, USA
| | - M Robitaille
- US Naval Research Laboratory, Washington, DC, 20375, USA
| | | | - Y Ng
- Mechanical Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, 85281, USA
| | - M Raphael
- US Naval Research Laboratory, Washington, DC, 20375, USA
| | - W Kang
- Mechanical Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, 85281, USA.
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5
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Wang MT, Pang SW. Enhancing Nasopharyngeal Carcinoma Cell Separation with Selective Fibronectin Coating and Topographical Modification on Polydimethylsiloxane Scaffold Platforms. Int J Mol Sci 2023; 24:12409. [PMID: 37569784 PMCID: PMC10418797 DOI: 10.3390/ijms241512409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 07/29/2023] [Accepted: 08/02/2023] [Indexed: 08/13/2023] Open
Abstract
The extracellular matrix (ECM) serves as a complex scaffold with diverse physical dimensions and surface properties influencing NPC cell migration. Polydimethylsiloxane (PDMS), a widely used biocompatible material, is hydrophobic and undesirable for cell seeding. Thus, the establishment of a biomimetic model with varied topographies and surface properties is essential for effective NPC43 cell separation from NP460 cells. This study explored how ECM surface properties influence NP460 and NPC43 cell behaviors via plasma treatments and chemical modifications to alter the platform surface. In addition to the conventional oxygen/nitrogen (O2/N2) plasma treatment, O2 and argon plasma treatments were utilized to modify the platform surface, which increased the hydrophilicity of the PDMS platforms, resulting in enhanced cell adhesion. (3-aminopropyl)triethoxysilane and fibronectin (FN) were used to coat the PDMS platforms uniformly and selectively. The chemical coatings significantly affected cell motility and spreading, as cells exhibited faster migration, elongated cell shapes, and larger spreading areas on FN-coated surfaces. Furthermore, narrower top layer trenches with 5 µm width and a lower concentration of 10 µg/mL FN were coated selectively on the platforms to limit NP460 cell movements and enhance NPC43 cell separation efficiency. A significantly high separation efficiency of 99.4% was achieved on the two-layer scaffold platform with 20/5 µm wide ridge/trench (R/T) as the top layer and 40/10 µm wide R/T as the bottom layer, coupling with 10 µg/mL FN selectively coated on the sidewalls of the top and bottom layers. This work demonstrated an innovative application of selective FN coating to direct cell behavior, offering a new perspective to probe into the subtleties of NPC cell separation efficiency. Moreover, this cost-effective and compact microsystem sets a new benchmark for separating cancer cells.
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Affiliation(s)
| | - S. W. Pang
- Department of Electrical Engineering, Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Hong Kong 999077, China;
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Takemoto F, Uchida-Fukuhara Y, Kamioka H, Okamura H, Ikegame M. Mechanical stretching determines the orientation of osteoblast migration and cell division. Anat Sci Int 2023:10.1007/s12565-023-00716-8. [PMID: 37022568 PMCID: PMC10366257 DOI: 10.1007/s12565-023-00716-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 03/11/2023] [Indexed: 04/07/2023]
Abstract
Osteoblasts alignment and migration are involved in the directional formation of bone matrix and bone remodeling. Many studies have demonstrated that mechanical stretching controls osteoblast morphology and alignment. However, little is known about its effects on osteoblast migration. Here, we investigated changes in the morphology and migration of preosteoblastic MC3T3-E1 cells after the removal of continuous or cyclic stretching. Actin staining and time-lapse recording were performed after stretching removal. The continuous and cyclic groups showed parallel and perpendicular alignment to the stretch direction, respectively. A more elongated cell morphology was observed in the cyclic group than in the continuous group. In both stretch groups, the cells migrated in a direction roughly consistent with the cell alignment. Compared to the other groups, the cells in the cyclic group showed an increased migration velocity and were almost divided in the same direction as the alignment. To summarize, our study showed that mechanical stretching changed cell alignment and morphology in osteoblasts, which affected the direction of migration and cell division, and velocity of migration. These results suggest that mechanical stimulation may modulate the direction of bone tissue formation by inducing the directional migration and cell division of osteoblasts.
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Affiliation(s)
- Fumiko Takemoto
- Department of Oral Morphology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
- Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - Yoko Uchida-Fukuhara
- Department of Oral Morphology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - Hiroshi Kamioka
- Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - Hirohiko Okamura
- Department of Oral Morphology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - Mika Ikegame
- Department of Oral Morphology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan.
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7
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Locke RC, Zlotnick HM, Stoeckl BD, Fryhofer GW, Galarraga JH, Dhand AP, Zgonis MH, Carey JL, Burdick JA, Mauck RL. Linguistic Analysis Identifies Emergent Biomaterial Fabrication Trends for Orthopaedic Applications. Adv Healthc Mater 2023; 12:e2202591. [PMID: 36657736 PMCID: PMC10121863 DOI: 10.1002/adhm.202202591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 12/20/2022] [Indexed: 01/21/2023]
Abstract
The expanse of publications in tissue engineering (TE) and orthopedic TE (OTE) over the past 20 years presents an opportunity to probe emergent trends in the field to better guide future technologies that can make an impact on musculoskeletal therapies. Leveraging this trove of knowledge, a hierarchical systematic search method and trend analysis using connected network mapping of key terms is developed. Within discrete time intervals, an accelerated publication rate for anatomic orthopedic tissue engineering (AOTE) of osteochondral defects, tendons, menisci, and entheses is identified. Within these growing fields, the top-listed key terms are extracted and stratified into evident categories, such as biomaterials, delivery method, or 3D printing and biofabrication. It is then identified which categories decreased, remained constant, increased, or emerged over time, identifying the specific emergent categories currently driving innovation in orthopedic repair technologies. Together, these data demonstrate a significant convergence of material types and descriptors used across tissue types. From this convergence, design criteria to support future research of anatomic constructs that mimic both the form and function of native tissues are formulated. In summary, this review identifies large-scale trends and predicts new directions in orthopedics that will define future materials and technologies.
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Affiliation(s)
- Ryan C. Locke
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
- Department of Veterans Affairs, CMCVAMC, Philadelphia, PA, USA
| | - Hannah M. Zlotnick
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
- Department of Veterans Affairs, CMCVAMC, Philadelphia, PA, USA
| | - Brendan D. Stoeckl
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
- Department of Veterans Affairs, CMCVAMC, Philadelphia, PA, USA
| | - George W. Fryhofer
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | | | - Abhishek P. Dhand
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Miltiadis H. Zgonis
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - James L. Carey
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Jason A. Burdick
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA
- BioFrontiers Institute, University of Colorado, Boulder, CO, USA
| | - Robert L. Mauck
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
- Department of Veterans Affairs, CMCVAMC, Philadelphia, PA, USA
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8
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Adhikari J, Roy A, Chanda A, D A G, Thomas S, Ghosh M, Kim J, Saha P. Effects of surface patterning and topography on the cellular functions of tissue engineered scaffolds with special reference to 3D bioprinting. Biomater Sci 2023; 11:1236-1269. [PMID: 36644788 DOI: 10.1039/d2bm01499h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The extracellular matrix (ECM) of the tissue organ exhibits a topography from the nano to micrometer range, and the design of scaffolds has been inspired by the host environment. Modern bioprinting aims to replicate the host tissue environment to mimic the native physiological functions. A detailed discussion on the topographical features controlling cell attachment, proliferation, migration, differentiation, and the effect of geometrical design on the wettability and mechanical properties of the scaffold are presented in this review. Moreover, geometrical pattern-mediated stiffness and pore arrangement variations for guiding cell functions have also been discussed. This review also covers the application of designed patterns, gradients, or topographic modulation on 3D bioprinted structures in fabricating the anisotropic features. Finally, this review accounts for the tissue-specific requirements that can be adopted for topography-motivated enhancement of cellular functions during the fabrication process with a special thrust on bioprinting.
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Affiliation(s)
- Jaideep Adhikari
- School of Advanced Materials, Green Energy and Sensor Systems, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India
| | - Avinava Roy
- Department of Metallurgy and Materials Engineering, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India
| | - Amit Chanda
- Department of Mechanical Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Gouripriya D A
- Centre for Interdisciplinary Sciences, JIS Institute of Advanced Studies and Research (JISIASR) Kolkata, JIS University, GP Block, Salt Lake, Sector-5, West Bengal 700091, India.
| | - Sabu Thomas
- School of Chemical Sciences, MG University, Kottayam 686560, Kerala, India
| | - Manojit Ghosh
- Department of Metallurgy and Materials Engineering, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India
| | - Jinku Kim
- Department of Bio and Chemical Engineering, Hongik University, Sejong, 30016, South Korea.
| | - Prosenjit Saha
- Centre for Interdisciplinary Sciences, JIS Institute of Advanced Studies and Research (JISIASR) Kolkata, JIS University, GP Block, Salt Lake, Sector-5, West Bengal 700091, India.
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9
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Han J, Park S, Kim JE, Park B, Hong Y, Lim JW, Jeong S, Son H, Kim HB, Seonwoo H, Jang KJ, Chung JH. Development of a Scaffold-on-a-Chip Platform to Evaluate Cell Infiltration and Osteogenesis on the 3D-Printed Scaffold for Bone Regeneration. ACS Biomater Sci Eng 2023; 9:968-977. [PMID: 36701173 DOI: 10.1021/acsbiomaterials.2c01367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Developing a scaffold for efficient and functional bone regeneration remains challenging. To accomplish this goal, a "scaffold-on-a-chip" device was developed as a platform to aid with the evaluation process. The device mimics a microenvironment experienced by a transplanted bone scaffold. The device contains a circular space at the center for scaffold insert and microfluidic channel that encloses the space. Such a design allows for monitoring of cell behavior at the blood-scaffold interphase. MC3T3-E1 cells were cultured with three different types of scaffold inserts to test its capability as an evaluation platform. Cellular behaviors, including migration, morphology, and osteogenesis with each scaffold, were analyzed through fluorescence images of live/dead assay and immunocytochemistry. Cellular behaviors, such as migration, morphology, and osteogenesis, were evaluated. The results revealed that our platform could effectively evaluate the osteoconductivity and osteoinductivity of scaffolds with various properties. In conclusion, our proposed platform is expected to replace current in vivo animal models as a highly relevant in vitro platform and can contribute to the fundamental study of bone regeneration.
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Affiliation(s)
- Jinsub Han
- Department of Biosystems Engineering, Seoul National University, Seoul 08826, Korea.,Convergence Major in Global Smart Farm, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
| | - Sangbae Park
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
| | - Jae Eun Kim
- Department of Biosystems Engineering, Seoul National University, Seoul 08826, Korea
| | - Byeongjoo Park
- Department of Biosystems Engineering, Seoul National University, Seoul 08826, Korea
| | - Yeonggeol Hong
- Department of Bio-Systems Engineering, Institute of Smart Farm, Gyeongsang National University, Jinju 52828, Korea
| | - Jae Woon Lim
- Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Korea
| | - Seung Jeong
- Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Korea
| | - Hyunmok Son
- Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Korea
| | - Hong Bae Kim
- Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Korea
| | - Hoon Seonwoo
- Department of Convergent Biosystems Engineering, College of Life Sciences and Natural Resources, Sunchon National University, Suncheon 57922, Korea.,Interdisciplinary Program in IT-Bio Convergence System, Sunchon National University, Suncheon 57922, Korea
| | - Kyoung-Je Jang
- Department of Bio-Systems Engineering, Institute of Smart Farm, Gyeongsang National University, Jinju 52828, Korea.,Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Korea
| | - Jong Hoon Chung
- Department of Biosystems Engineering, Seoul National University, Seoul 08826, Korea.,Convergence Major in Global Smart Farm, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea.,Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
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10
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Dos Santos LMS, de Oliveira JM, da Silva ECO, Fonseca VML, Silva JP, Barreto E, Dantas NO, Silva ACA, Jesus-Silva AJ, Mendonça CR, Fonseca EJS. Mechanical and morphological responses of osteoblast-like cells to two-photon polymerized microgrooved surfaces. J Biomed Mater Res A 2023; 111:234-244. [PMID: 36239143 DOI: 10.1002/jbm.a.37454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 09/18/2022] [Accepted: 09/27/2022] [Indexed: 01/10/2023]
Abstract
Microgrooved surfaces are recognized as an important strategy of tissue engineering to promote the alignment of bone cells. In this work, we have investigated the mechanical and morphological aspects of osteoblasts cells after interaction with different micro-structured polymeric surfaces. Femtosecond laser writing technique was used for the construction of circular and parallel microgrooved patterns in biocompatible polymeric surfaces based on pentaerythritol triacrylate. Additionally, we have studied the influence of the biocompatible TiO2 nanocrystals (NCs) related to the cell behavior, when incorporated to the photoresin. The atomic force microscopy technique was used to investigate the biomechanical reaction of the human osteoblast-like MG-63 cells for the different microgroove. It was demonstrated that osteoblasts grown on circular microgrooved surfaces exhibited significantly larger Young's modulus compared to cells sown on flat films. Furthermore, we could observe that TiO2 NCs improved the circular microgrooves effects, resulting in more populated sites, 34% more elongated cells, and increasing the cell stiffness by almost 160%. These results can guide the design and construction of effective scaffold surfaces with circular microgrooves for tissue engineering and bone regeneration.
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Affiliation(s)
- Laura M S Dos Santos
- Optics and Nanoscopy Group, Institute of Physics, Federal University of Alagoas (UFAL), Maceió, Brazil
| | | | - Elaine C O da Silva
- Optics and Nanoscopy Group, Institute of Physics, Federal University of Alagoas (UFAL), Maceió, Brazil
| | - Vitor M L Fonseca
- Laboratory of Cell Biology, Institute of Biological Sciences and Health, Federal University of Alagoas (ICBS/UFAL), Maceió, Brazil
| | - Juliane P Silva
- Laboratory of Cell Biology, Institute of Biological Sciences and Health, Federal University of Alagoas (ICBS/UFAL), Maceió, Brazil
| | - Emiliano Barreto
- Laboratory of Cell Biology, Institute of Biological Sciences and Health, Federal University of Alagoas (ICBS/UFAL), Maceió, Brazil
| | | | - Anielle C A Silva
- Institute of Physics, Federal University of Alagoas (UFAL), Maceió, Brazil
| | - Alcenísio J Jesus-Silva
- Optics and Nanoscopy Group, Institute of Physics, Federal University of Alagoas (UFAL), Maceió, Brazil
| | - Cléber R Mendonça
- Institute of Physics of São Carlos, University of São Paulo, São Carlos, Brazil
| | - Eduardo J S Fonseca
- Optics and Nanoscopy Group, Institute of Physics, Federal University of Alagoas (UFAL), Maceió, Brazil
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11
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Hong X, Xu Y, Pang SW. Enhanced motility and interaction of nasopharyngeal carcinoma with epithelial cells in confined microwells. LAB ON A CHIP 2023; 23:511-524. [PMID: 36632832 DOI: 10.1039/d2lc00616b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The three-dimensional (3D) structure of the extracellular matrix and cell-cell contacts are two important cues to altering cell migration behavior and the tumor formation process. In this work, we designed and fabricated microwell arrays with a grating-patterned bottom in polydimethylsiloxane platforms to systematically study the effects of confinement, changes in topography, and cell-cell contacts on the migration behavior of nasopharyngeal carcinoma (NPC43) and immortalized nasopharyngeal epithelial (NP460) cells by time-lapse imaging. When two types of cells were co-cultured in microwells, the migration speed and spreading area of NPC43 cells were significantly increased, which might be attributed to the heterotypic cell-cell contacts with NP460 cells. On a flat surface, NPC43 cells could not form clusters due to the frequent interruptions by the active movements of NP460 cells. However, in 3D microwell arrays, clusters of NPC43 cells formed on the bottom surface while the majority of NP460 cells migrated onto the sidewalls. These cell clusters could be further processed to form spheroids for drug screening. These results also revealed that the 3D microenvironments and cell-cell contacts could have significant implications for NPC cell migration and initiation of tumor formation, which will provide insight for NPC progression and dissemination.
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Affiliation(s)
- Xiao Hong
- Department of Electrical Engineering and Centre for Biosystems, Neuroscience and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, China.
| | - Yuanhao Xu
- Department of Electrical Engineering and Centre for Biosystems, Neuroscience and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, China.
| | - Stella W Pang
- Department of Electrical Engineering and Centre for Biosystems, Neuroscience and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, China.
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12
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Cheng Y, Pang SW. Effects of nanopillars and surface coating on dynamic traction force. MICROSYSTEMS & NANOENGINEERING 2023; 9:6. [PMID: 36620393 PMCID: PMC9814462 DOI: 10.1038/s41378-022-00473-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 10/11/2022] [Accepted: 11/04/2022] [Indexed: 06/17/2023]
Abstract
The extracellular matrix serves as structural support for cells and provides biophysical and biochemical cues for cell migration. Topography, material, and surface energy can regulate cell migration behaviors. Here, the responses of MC3T3-E1 cells, including migration speed, morphology, and spreading on various platform surfaces, were investigated. Polydimethylsiloxane (PDMS) micropost sensing platforms with nanopillars, silicon oxide, and titanium oxide on top of the microposts were fabricated, and the dynamic cell traction force during migration was monitored. The relationships between various platform surfaces, migration behaviors, and cell traction forces were studied. Compared with the flat PDMS surface, cells on silicon oxide and titanium oxide surfaces showed reduced mobility and less elongation. On the other hand, cells on the nanopillar surface showed more elongation and a higher migration speed than cells on silicon oxide and titanium oxide surfaces. MC3T3-E1 cells on microposts with nanopillars exerted a larger traction force than those on flat PDMS microposts and had more filopodia and long protrusions. Understanding the relationships between platform surface condition, migration behavior, and cell traction force can potentially lead to better control of cell migration in biomaterials capable of promoting tissue repair and regeneration.
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Affiliation(s)
- Yijun Cheng
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
- Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Stella W. Pang
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
- Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, China
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13
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NEZARI S, SARLI M, HIVECHI A, BAHRAMI SH, MILAN PB, LATIFI N, LATIFI F, GHADIMI T, HARAMSHAHI SMA, NADERI GHARAHGHESHLAGH S. Investigating the effect of poly (ɛ-caprolactone) nanofibers scaffolds with random, unidirectionally, and radially aligned morphologies on the Fibroblast cell's attachment and growth behavior. Turk J Chem 2022; 47:54-62. [PMID: 37720849 PMCID: PMC10503997 DOI: 10.55730/1300-0527.3516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 02/20/2023] [Accepted: 11/08/2022] [Indexed: 02/25/2023] Open
Abstract
In the last decade, significant progress in tissue engineering, repairing, and replacing organs has been achieved. The design and production of scaffolds for tissue engineering are one of the main areas which have attracted the researcher's interest. In this regard, electrospinning is one of the most popular methods of nanoscale scaffold similar to extracellular matrix production. This paper reports the fabrication of scaffolds consisting of radially aligned PCL nanofibers by utilizing a collector composed of a central point electrode and a peripheral ring electrode. The chemical and physical properties were compared using SEM, FTIR, XRD, and DSC experiments, as well as biological performance using the MTT method and cell morphology with nanofibers with random and unidirectionally morphology. Results of this study showed greater physical and biological properties for radially aligned nanofibers which make them an excellent candidate for wound healing applications due to the guided cell growth on this type of nanofiber.
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Affiliation(s)
- Saeed NEZARI
- Department of Textile Engineering, Amirkabir University of Technology, Tehran,
Iran
- Department of Plastic and Reconstructive Surgery, Hazrat Fatemeh Hospital, Iran University of Medical Sciences, Tehran,
Iran
| | | | - Ahmad HIVECHI
- Department of Textile Engineering, Amirkabir University of Technology, Tehran,
Iran
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran,
Iran
| | - S. Hajir BAHRAMI
- Department of Textile Engineering, Amirkabir University of Technology, Tehran,
Iran
| | - Peiman B. MILAN
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran,
Iran
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran,
Iran
| | - Noorahmad LATIFI
- Department of Textile Engineering, Amirkabir University of Technology, Tehran,
Iran
| | - Fatemeh LATIFI
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran,
Iran
| | - Tayyeb GHADIMI
- Department of Plastic and Reconstructive Surgery, Hazrat Fatemeh Hospital, Iran University of Medical Sciences, Tehran,
Iran
| | - S. Mohammad Amin HARAMSHAHI
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran,
Iran
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran,
Iran
| | - Soheila NADERI GHARAHGHESHLAGH
- Department of Plastic and Reconstructive Surgery, Hazrat Fatemeh Hospital, Iran University of Medical Sciences, Tehran,
Iran
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14
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Engineered barriers regulate osteoblast cell migration in vertical direction. Sci Rep 2022; 12:4459. [PMID: 35292702 PMCID: PMC8924172 DOI: 10.1038/s41598-022-08262-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 03/01/2022] [Indexed: 11/29/2022] Open
Abstract
Considering cell migration is essential for understanding physiological processes and diseases. The vertical migration of cells in three dimensions is vital, but most previous studies on cell migration have only focused on two-dimensional horizontal migration. In this paper, cell migration in the vertical direction was studied. Barriers with a height of 1, 5, 10, and 25 µm with grating and arrows in channels as guiding patterns were fabricated. The effects of barrier height and guiding patterns on the vertical migration of MC3T3 cells were explored. The study revealed that taller barriers hinder vertical migration of MC3T3 cells, whereas grating and arrows in channels promote it. The time-lapse and micrograph images showed that as the barrier height increased, the cell climbing angle along the barrier sidewall decreased, and the time taken to climb over the barrier increased. These results indicate that taller barriers increase the difficulty of vertical migration by MC3T3 cells. To promote the vertical migration of MC3T3 cells, 10 µm tall barriers with 18° and 40° sloped sidewalls were fabricated. For barriers with 18° sloped sidewalls, the probability for MC3T3 cells to climb up and down the 10 µm tall barriers was 40.6% and 20.3%, respectively; this is much higher than the migration probability over vertical barriers. This study shows topographic guidance on the vertical migration of MC3T3 cells and broadens the understanding of cell migration in the vertical direction.
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15
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Um SH, Lee J, Song IS, Ok MR, Kim YC, Han HS, Rhee SH, Jeon H. Regulation of cell locomotion by nanosecond-laser-induced hydroxyapatite patterning. Bioact Mater 2021; 6:3608-3619. [PMID: 33869901 PMCID: PMC8022786 DOI: 10.1016/j.bioactmat.2021.03.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 03/09/2021] [Accepted: 03/09/2021] [Indexed: 02/08/2023] Open
Abstract
Hydroxyapatite, an essential mineral in human bones composed mainly of calcium and phosphorus, is widely used to coat bone graft and implant surfaces for enhanced biocompatibility and bone formation. For a strong implant-bone bond, the bone-forming cells must not only adhere to the implant surface but also move to the surface requiring bone formation. However, strong adhesion tends to inhibit cell migration on the surface of hydroxyapatite. Herein, a cell migration highway pattern that can promote cell migration was prepared using a nanosecond laser on hydroxyapatite coating. The developed surface promoted bone-forming cell movement compared with the unpatterned hydroxyapatite surface, and the cell adhesion and movement speed could be controlled by adjusting the pattern width. Live-cell microscopy, cell tracking, and serum protein analysis revealed the fundamental principle of this phenomenon. These findings are applicable to hydroxyapatite-coated biomaterials and can be implemented easily by laser patterning without complicated processes. The cell migration highway can promote and control cell movement while maintaining the existing advantages of hydroxyapatite coatings. Furthermore, it can be applied to the surface treatment of not only implant materials directly bonded to bone but also various implanted biomaterials implanted that require cell movement control.
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Affiliation(s)
- Seung-Hoon Um
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Department of Dental Biomaterials Science, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 03080, Republic of Korea
| | - Jaehong Lee
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - In-Seok Song
- Department of Oral and Maxillofacial Surgery, Korea University Anam Hospital, Seoul, 02841, Republic of Korea
| | - Myoung-Ryul Ok
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Yu-Chan Kim
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Bio-Medical Science and Technology, KIST School, Korea University of Science and Technology, Seoul, 02792, Republic of Korea
| | - Hyung-Seop Han
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Sang-Hoon Rhee
- Department of Dental Biomaterials Science, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, 03080, Republic of Korea
| | - Hojeong Jeon
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Bio-Medical Science and Technology, KIST School, Korea University of Science and Technology, Seoul, 02792, Republic of Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, Republic of Korea
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16
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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.
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17
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Cheng Y, Zhu S, Pang SW. Directing osteoblastic cell migration on arrays of nanopillars and nanoholes with different aspect ratios. LAB ON A CHIP 2021; 21:2206-2216. [PMID: 33876172 DOI: 10.1039/d1lc00104c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
To realize highly directional guidance for cell migration, both micro- and nano-scale topographies were studied to better understand and mimic the complex extracellular matrix environment. Polydimethylsiloxane-based platforms with micro- and nano-topographies were developed to systematically study their guidance effects on cell migration behaviors. Compared to microtopography such as flat surface or grating, nanotopographies such as nanoholes and nanopillars could promote the generation of filopodia and extension of long protrusions with increased migration speed for MC3T3-E1 cells. Although cells on the grating structures showed lower migration speed, more directional cell migration was achieved due to their anisotropic topography compared to nanohole or nanopillar arrays with isotropic structures. To further enhance the cell migration directionality, the nanotopographies were patterned in grating arrangements and the results showed that both nanoholes and nanopillars in grating arrangements introduced more directional cell migration compared to gratings. The effects of physical dimensions of the nanotopographies on cell migration were studied and the results showed that there was less cell elongation and less directional migration of the nanoholes in grating arrangements with increasing depth of nanoholes. However, the nanopillars in grating arrangements showed more cell elongation, more directional migration, and higher migration speed with increasing height of the nanopillars. Platforms with nanopillars in grating arrangements and large height could be used to control cell migration speed and directionality, which could potentially lead to cell sorting and screening.
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Affiliation(s)
- Yijun Cheng
- Department of Electrical Engineering, Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, China.
| | - Shuyan Zhu
- Department of Electrical Engineering, Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, China.
| | - Stella W Pang
- Department of Electrical Engineering, Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, China.
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18
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Gwon Y, Park S, Kim W, Han T, Kim H, Kim J. Radially patterned transplantable biodegradable scaffolds as topographically defined contact guidance platforms for accelerating bone regeneration. J Biol Eng 2021; 15:12. [PMID: 33752709 PMCID: PMC7986475 DOI: 10.1186/s13036-021-00263-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 03/15/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The healing of large critical-sized bone defects remains a clinical challenge in modern orthopedic medicine. The current gold standard for treating critical-sized bone defects is autologous bone graft; however, it has critical limitations. Bone tissue engineering has been proposed as a viable alternative, not only for replacing the current standard treatment, but also for producing complete regeneration of bone tissue without complex surgical treatments or tissue transplantation. In this study, we proposed a transplantable radially patterned scaffold for bone regeneration that was defined by capillary force lithography technology using biodegradable polycaprolactone polymer. RESULTS The radially patterned transplantable biodegradable scaffolds had a radial structure aligned in a central direction. The radially aligned pattern significantly promoted the recruitment of host cells and migration of osteoblasts into the defect site. Furthermore, the transplantable scaffolds promoted regeneration of critical-sized bone defects by inducing cell migration and differentiation. CONCLUSIONS Our findings demonstrated that topographically defined radially patterned transplantable biodegradable scaffolds may have great potential for clinical application of bone tissue regeneration.
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Affiliation(s)
- Yonghyun Gwon
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea
- Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Sunho Park
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea
- Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Woochan Kim
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Taeseong Han
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Hyoseong Kim
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Jangho Kim
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea.
- Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju, 61186, Republic of Korea.
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