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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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Majidi M, Pakzad S, Salimi M, Azadbakht A, Hajighasemlou S, Amoupour M, Nokhbedehghan Z, Bonakdar S, Sineh Sepehr K, Pal Singh Chauhan N, Gholipourmalekabadi M. Macrophage cell morphology-imprinted substrates can modulate mesenchymal stem cell behaviors and macrophage M1/M2 polarization for wound healing applications. Biotechnol Bioeng 2023; 120:3638-3654. [PMID: 37668186 DOI: 10.1002/bit.28546] [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: 03/15/2023] [Revised: 08/09/2023] [Accepted: 08/24/2023] [Indexed: 09/06/2023]
Abstract
Mesenchymal stem cells and macrophages (MQ) are two very important cells involved in the normal wound healing process. It is well understood that topological cues and mechanical factors can lead to different responses in stem cells and MQ by influencing their shape, cytoskeleton proliferation, migration, and differentiation, which play an essential role in the success or failure of biomaterial implantation and more importantly wound healing. On the other hand, the polarization of MQ from proinflammatory (M1) to prohealing (M2) phenotypes has a critical role in the acceleration of wound healing. In this study, the morphology of different MQ subtypes (M0, M1, and M2) was imprinted on a silicon surface (polydimethylsiloxane [PDMS]) to prepare a nano-topography cell-imprinted substrate with the ability to induce anti-inflammatory effects on the mouse adipose-derived stem cells (ADSCs) and RAW264.7 monocyte cell line (MO). The gene expression profiles and flow cytometry of MQ revealed that the cell shape microstructure promoted the MQ phenotypes according to the specific shape of each pattern. The ELISA results were in agreement with the gene expression profiles. The ADSCs on the patterned PDMS exhibited remarkably different shapes from no-patterned PDMS. The MOs grown on M2 morphological patterns showed a significant increase in expression and section of anti-inflammatory cytokine compared with M0 and M1 patterns. The ADSCs homing in niches heavily deformed the cytoskeletal, which is probably why the gene expression and phenotype unexpectedly changed. In conclusion, wound dressings with M2 cell morphology-induced surfaces are suggested as excellent anti-inflammatory and antiscarring dressings.
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Affiliation(s)
- Mohammad Majidi
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Saeedreza Pakzad
- Food and Drug Laboratory Research Center, Food and Drug Administration, Iran Ministry of Health and Medical Education, Tehran, Iran
| | - Maryam Salimi
- Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abdolnaser Azadbakht
- Department of Biomedical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
- Stem Cell Research Center, Tissue Engineering and Regenerative Medicine Institute, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Saieh Hajighasemlou
- Food and Drug Administration, Iran Ministry of Health and Medical Education, Tehran, Iran
| | - Moein Amoupour
- Department of Medical Biotechnology, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Zeinab Nokhbedehghan
- Department of Medical Biotechnology, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - Koushan Sineh Sepehr
- Laboratory Sciences Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | | | - Mazaher Gholipourmalekabadi
- Department of Medical Biotechnology, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
- Cellular and Molecular Research Centre, Iran University of Medical Sciences, Tehran, Iran
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Lan D, Wu B, Zhang H, Chen X, Li Z, Dai F. Novel Bioinspired Nerve Scaffold with High Synchrony between Biodegradation and Nerve Regeneration for Repair of Peripheral Nerve Injury. Biomacromolecules 2023; 24:5451-5466. [PMID: 37917398 DOI: 10.1021/acs.biomac.3c00920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
The morphological structure reconstruction and functional recovery of long-distance peripheral nerve injury (PNI) are global medical challenges. Biodegradable nerve scaffolds that provide mechanical support for the growth and extension of neurites are a desired way to repair long-distance PNI. However, the synchrony of scaffold degradation and nerve regeneration is still challenging. Here, a novel bioinspired multichannel nerve guide conduit (MNGC) with topographical cues based on silk fibroin and ε-polylysine modification was constructed. This conduit (SF(A) + PLL MNGC) exhibited sufficient mechanical strength, excellent degradability, and favorable promotion of cell growth. Peripheral nerve repairing was evaluated by an in vivo 10 mm rat sciatic model. In vivo evidence demonstrated that SF(A) + PLL MNGC was completely biodegraded in the body within 4 weeks after providing sufficient physical support and guide for neurite extension, and a 10 mm sciatic nerve defect was effectively repaired without scar formation, indicating a high synchronous effect of scaffold biodegradation and nerve regeneration. More importantly, the regenerated nerve of the SF(A) + PLL MNGC group showed comparable morphological reconstruction and functional recovery to that of autologous nerve transplantation. This work proved that the designed SF(A) + PLL MNGC has potential for application in long-distance PNI repair in the clinic.
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Affiliation(s)
- Dongwei Lan
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
- College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Baiqing Wu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
- College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Haiqiang Zhang
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
- College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Xiang Chen
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
- College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Zhi Li
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
- College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Fangyin Dai
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
- Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400715, China
- College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
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Pramotton FM, Cousin L, Roy T, Giampietro C, Cecchini M, Masciullo C, Ferrari A, Poulikakos D. Accelerated epithelial layer healing induced by tactile anisotropy in surface topography. SCIENCE ADVANCES 2023; 9:eadd1581. [PMID: 37027475 PMCID: PMC10081848 DOI: 10.1126/sciadv.add1581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 03/03/2023] [Indexed: 06/19/2023]
Abstract
Mammalian cells respond to tactile cues from topographic elements presented by the substrate. Among these, anisotropic features distributed in an ordered manner give directionality. In the extracellular matrix, this ordering is embedded in a noisy environment altering the contact guidance effect. To date, it is unclear how cells respond to topographical signals in a noisy environment. Here, using rationally designed substrates, we report morphotaxis, a guidance mechanism enabling fibroblasts and epithelial cells to move along gradients of topographic order distortion. Isolated cells and cell ensembles perform morphotaxis in response to gradients of different strength and directionality, with mature epithelia integrating variations of topographic order over hundreds of micrometers. The level of topographic order controls cell cycle progression, locally delaying or promoting cell proliferation. In mature epithelia, the combination of morphotaxis and noise-dependent distributed proliferation provides a strategy to enhance wound healing as confirmed by a mathematical model capturing key elements of the process.
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Affiliation(s)
- Francesca Michela Pramotton
- Experimental Continuum Mechanics Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Zurich 8092, Switzerland
- EMPA, Swiss Federal Laboratories for Material Science and Technologies, Überlandstrasse 129, Dübendorf 8600, Switzerland
| | - Lucien Cousin
- Macromolecular Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
| | - Tamal Roy
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, Zurich CH-8092, Switzerland
| | - Costanza Giampietro
- Experimental Continuum Mechanics Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Zurich 8092, Switzerland
- EMPA, Swiss Federal Laboratories for Material Science and Technologies, Überlandstrasse 129, Dübendorf 8600, Switzerland
| | - Marco Cecchini
- NEST, Istituto Nanoscienze CNR and Scuola Normale Superiore, Pisa 56127, Italy
| | - Cecilia Masciullo
- NEST, Istituto Nanoscienze CNR and Scuola Normale Superiore, Pisa 56127, Italy
| | - Aldo Ferrari
- EMPA, Swiss Federal Laboratories for Material Science and Technologies, Überlandstrasse 129, Dübendorf 8600, Switzerland
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, Zurich CH-8092, Switzerland
| | - Dimos Poulikakos
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, Zurich CH-8092, Switzerland
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Guerron A, Phan HT, Peñaloza-Arias C, Brambilla D, Roullin VG, Giasson S. Selectively triggered cell detachment from poly(N-isopropylacrylamide) microgel functionalized substrates. Colloids Surf B Biointerfaces 2022. [DOI: 10.1016/j.colsurfb.2022.112699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Hsu CC, Serio A, Gopal S, Gelmi A, Chiappini C, Desai RA, Stevens MM. Biophysical Regulations of Epigenetic State and Notch Signaling in Neural Development Using Microgroove Substrates. ACS APPLIED MATERIALS & INTERFACES 2022; 14:32773-32787. [PMID: 35830496 PMCID: PMC9335410 DOI: 10.1021/acsami.2c01996] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A number of studies have recently shown how surface topography can alter the behavior and differentiation patterns of different types of stem cells. Although the exact mechanisms and molecular pathways involved remain unclear, a consistent portion of the literature points to epigenetic changes induced by nuclear remodeling. In this study, we investigate the behavior of clinically relevant neural populations derived from human pluripotent stem cells when cultured on polydimethylsiloxane microgrooves (3 and 10 μm depth grooves) to investigate what mechanisms are responsible for their differentiation capacity and functional behavior. Our results show that microgrooves enhance cell alignment, modify nuclear geometry, and significantly increase cellular stiffness, which we were able to measure at high resolution with a combination of light and electron microscopy, scanning ion conductance microscopy (SICM), and atomic force microscopy (AFM) coupled with quantitative image analysis. The microgrooves promoted significant changes in the epigenetic landscape, as revealed by the expression of key histone modification markers. The main behavioral change of neural stem cells on microgrooves was an increase of neuronal differentiation under basal conditions on the microgrooves. Through measurements of cleaved Notch1 levels, we found that microgrooves downregulate Notch signaling. We in fact propose that microgroove topography affects the differentiation potential of neural stem cells by indirectly altering Notch signaling through geometric segregation and that this mechanism in parallel with topography-dependent epigenetic modulations acts in concert to enhance stem cell neuronal differentiation.
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Affiliation(s)
- Chia-Chen Hsu
- Department
of Materials, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
- Department
of Bioengineering, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
- Institute
of Biomedical Engineering, Imperial College
London, Exhibition Road, London SW7 2AZ, U.K.
| | - Andrea Serio
- Department
of Materials, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
- Department
of Bioengineering, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
- Institute
of Biomedical Engineering, Imperial College
London, Exhibition Road, London SW7 2AZ, U.K.
| | - Sahana Gopal
- Department
of Materials, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
- Department
of Bioengineering, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
- Institute
of Biomedical Engineering, Imperial College
London, Exhibition Road, London SW7 2AZ, U.K.
| | - Amy Gelmi
- Department
of Materials, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
- Department
of Bioengineering, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
- Institute
of Biomedical Engineering, Imperial College
London, Exhibition Road, London SW7 2AZ, U.K.
| | - Ciro Chiappini
- Department
of Materials, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
- Department
of Bioengineering, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
- Institute
of Biomedical Engineering, Imperial College
London, Exhibition Road, London SW7 2AZ, U.K.
| | - Ravi A. Desai
- Department
of Materials, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
- Department
of Bioengineering, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
- Institute
of Biomedical Engineering, Imperial College
London, Exhibition Road, London SW7 2AZ, U.K.
| | - Molly M. Stevens
- Department
of Materials, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
- Department
of Bioengineering, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
- Institute
of Biomedical Engineering, Imperial College
London, Exhibition Road, London SW7 2AZ, U.K.
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7
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Bjørge IM, Correia CR, Mano JF. Hipster microcarriers: exploring geometrical and topographical cues of non-spherical microcarriers in biomedical applications. MATERIALS HORIZONS 2022; 9:908-933. [PMID: 34908074 DOI: 10.1039/d1mh01694f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Structure and organisation are key aspects of the native tissue environment, which ultimately condition cell fate via a myriad of processes, including the activation of mechanotransduction pathways. By modulating the formation of integrin-mediated adhesions and consequently impacting cell contractility, engineered geometrical and topographical cues may be introduced to activate downstream signalling and ultimately control cell morphology, proliferation, and differentiation. Microcarriers appear as attractive vehicles for cell-based tissue engineering strategies aiming to modulate this 3D environment, but also as vehicles for cell-free applications, given the ease in tuning their chemical and physical properties. In this review, geometry and topography are highlighted as two preponderant features in actively regulating interactions between cells and the extracellular matrix. While most studies focus on the 2D environment, we focus on how the incorporation of these strategies in 3D systems could be beneficial. The techniques applied to design 3D microcarriers with unique geometries and surface topographical cues are covered, as well as specific tissue engineering approaches employing these microcarriers. In fact, successfully achieving a functional histoarchitecture may depend on a combination of fine-tuned geometrically shaped microcarriers presenting intricately tailored topographical cues. Lastly, we pinpoint microcarrier geometry as a key player in cell-free biomaterial-based strategies, and its impact on drug release kinetics, the production of steerable microcarriers to target tumour cells, and as protein or antibody biosensors.
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Affiliation(s)
- Isabel M Bjørge
- Department of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal.
| | - Clara R Correia
- Department of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal.
| | - João F Mano
- Department of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal.
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8
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Le PH, Nguyen DHK, Medina AA, Linklater DP, Loebbe C, Crawford RJ, MacLaughlin S, Ivanova EP. Surface Architecture Influences the Rigidity of Candida albicans Cells. NANOMATERIALS 2022; 12:nano12030567. [PMID: 35159912 PMCID: PMC8840568 DOI: 10.3390/nano12030567] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/29/2022] [Accepted: 02/02/2022] [Indexed: 02/04/2023]
Abstract
Atomic force microscopy (AFM) was used to investigate the morphology and rigidity of the opportunistic pathogenic yeast, Candida albicans ATCC 10231, during its attachment to surfaces of three levels of nanoscale surface roughness. Non-polished titanium (npTi), polished titanium (pTi), and glass with respective average surface roughness (Sa) values of 389 nm, 14 nm, and 2 nm, kurtosis (Skur) values of 4, 16, and 4, and skewness (Sskw) values of 1, 4, and 1 were used as representative examples of each type of nanoarchitecture. Thus, npTi and glass surfaces exhibited similar Sskw and Skur values but highly disparate Sa. C. albicans cells that had attached to the pTi surfaces exhibited a twofold increase in rigidity of 364 kPa compared to those yeast cells attached to the surfaces of npTi (164 kPa) and glass (185 kPa). The increased rigidity of the C. albicans cells on pTi was accompanied by a distinct round morphology, condensed F-actin distribution, lack of cortical actin patches, and the negligible production of cell-associated polymeric substances; however, an elevated production of loose extracellular polymeric substances (EPS) was observed. The differences in the physical response of C. albicans cells attached to the three surfaces suggested that the surface nanoarchitecture (characterized by skewness and kurtosis), rather than average surface roughness, could directly influence the rigidity of the C. albicans cells. This work contributes to the next-generation design of antifungal surfaces by exploiting surface architecture to control the extent of biofilm formation undertaken by yeast pathogens and highlights the importance of performing a detailed surface roughness characterization in order to identify and discriminate between the surface characteristics that may influence the extent of cell attachment and the subsequent behavior of the attached cells.
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Affiliation(s)
- Phuc H. Le
- STEM College, School of Science, RMIT University, Melbourne, VIC 3000, Australia; (P.H.L.); (D.H.K.N.); (A.A.M.); (D.P.L.); (R.J.C.)
- ARC Research Hub for Australian Steel Manufacturing, STEM College, School of Science, RMIT University, Melbourne, VIC 3000, Australia
| | - Duy H. K. Nguyen
- STEM College, School of Science, RMIT University, Melbourne, VIC 3000, Australia; (P.H.L.); (D.H.K.N.); (A.A.M.); (D.P.L.); (R.J.C.)
| | - Arturo Aburto Medina
- STEM College, School of Science, RMIT University, Melbourne, VIC 3000, Australia; (P.H.L.); (D.H.K.N.); (A.A.M.); (D.P.L.); (R.J.C.)
- ARC Research Hub for Australian Steel Manufacturing, STEM College, School of Science, RMIT University, Melbourne, VIC 3000, Australia
| | - Denver P. Linklater
- STEM College, School of Science, RMIT University, Melbourne, VIC 3000, Australia; (P.H.L.); (D.H.K.N.); (A.A.M.); (D.P.L.); (R.J.C.)
| | | | - Russell J. Crawford
- STEM College, School of Science, RMIT University, Melbourne, VIC 3000, Australia; (P.H.L.); (D.H.K.N.); (A.A.M.); (D.P.L.); (R.J.C.)
| | | | - Elena P. Ivanova
- STEM College, School of Science, RMIT University, Melbourne, VIC 3000, Australia; (P.H.L.); (D.H.K.N.); (A.A.M.); (D.P.L.); (R.J.C.)
- Correspondence:
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9
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Pereira AR, Trivanović D, Stahlhut P, Rudert M, Groll J, Herrmann M. Preservation of the naïve features of mesenchymal stromal cells in vitro: Comparison of cell- and bone-derived decellularized extracellular matrix. J Tissue Eng 2022; 13:20417314221074453. [PMID: 35154631 PMCID: PMC8829705 DOI: 10.1177/20417314221074453] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 01/04/2022] [Indexed: 12/14/2022] Open
Abstract
The fate and behavior of bone marrow mesenchymal stem/stromal cells (BM-MSC) is bidirectionally influenced by their microenvironment, the stem cell niche, where a magnitude of biochemical and physical cues communicate in an extremely orchestrated way. It is known that simplified 2D in vitro systems for BM-MSC culture do not represent their naïve physiological environment. Here, we developed four different 2D cell-based decellularized matrices (dECM) and a 3D decellularized human trabecular-bone scaffold (dBone) to evaluate BM-MSC behavior. The obtained cell-derived matrices provided a reliable tool for cell shape-based analyses of typical features associated with osteogenic differentiation at high-throughput level. On the other hand, exploratory proteomics analysis identified native bone-specific proteins selectively expressed in dBone but not in dECM models. Together with its architectural complexity, the physico-chemical properties of dBone triggered the upregulation of stemness associated genes and niche-related protein expression, proving in vitro conservation of the naïve features of BM-MSC.
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Affiliation(s)
- Ana Rita Pereira
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital Wuerzburg, Wuerzburg, Germany
- Bernhard-Heine-Centrum for Locomotion Research, University of Wuerzburg, Wuerzburg, Germany
| | - Drenka Trivanović
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital Wuerzburg, Wuerzburg, Germany
- Bernhard-Heine-Centrum for Locomotion Research, University of Wuerzburg, Wuerzburg, Germany
| | - Philipp Stahlhut
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Wuerzburg, Wuerzburg, Germany
| | - Maximilian Rudert
- Department of Orthopedic Surgery, Koenig-Ludwig-Haus, University of Wuerzburg, Wuerzburg, Germany
| | - Jürgen Groll
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Wuerzburg, Wuerzburg, Germany
| | - Marietta Herrmann
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital Wuerzburg, Wuerzburg, Germany
- Bernhard-Heine-Centrum for Locomotion Research, University of Wuerzburg, Wuerzburg, Germany
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11
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Yadav S, Majumder A. Biomimicked hierarchical 2D and 3D structures from natural templates: applications in cell biology. Biomed Mater 2021; 16. [PMID: 34438385 DOI: 10.1088/1748-605x/ac21a7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 08/26/2021] [Indexed: 11/11/2022]
Abstract
Intricate structures of natural surfaces and materials have amazed people over the ages. The unique properties of various surfaces also created interest and curiosity in researchers. In the recent past, with the advent of superior microscopy techniques, we have started to understand how these complex structures provide superior properties. With that knowledge, scientists have developed various biomimicked and bio-inspired surfaces for different non-biological applications. In the last two decades, we have also started to learn how structures of the tissue microenvironment influence cell function and behaviour, both in physiological and pathological conditions. Hence, it became essential to decipher the role and importance of structural hierarchy in the cellular context. With advances in microfabricated techniques, such complex structures were made by superimposing features of different dimensions. However, the fabricated topographies are far from matching the complexities presentin vivo. Hence, the need of biomimicking the natural surfaces for cellular applications was felt. In this review, we discuss a few examples of hierarchical surfaces found in plants, insects, and vertebrates. Such structures have been widely biomimicked for various applications but rarely studied for cell-substrate interaction and cellular response. Here, we discuss the research work wherein 2D hierarchical substrates were prepared using biomimicking to understand cellular functions such as adhesion, orientation, differentiation, and formation of spheroids. Further, we also present the status of ongoing research in mimicking 3D tissue architecture using de-cellularized plant-based and tissue/organ-based scaffolds. We will also discuss 3D printing for fabricating 2D and 3D hierarchical structures. The review will end by highlighting the various advantages and research challenges in this approach. The biomimickedin-vivolike substrate can be used to better understand cellular physiology, and for tissue engineering.
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Affiliation(s)
- Shital Yadav
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Abhijit Majumder
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India
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12
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Pereira AR, Lipphaus A, Ergin M, Salehi S, Gehweiler D, Rudert M, Hansmann J, Herrmann M. Modeling of the Human Bone Environment: Mechanical Stimuli Guide Mesenchymal Stem Cell-Extracellular Matrix Interactions. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4431. [PMID: 34442954 PMCID: PMC8398413 DOI: 10.3390/ma14164431] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 08/02/2021] [Accepted: 08/03/2021] [Indexed: 02/06/2023]
Abstract
In bone tissue engineering, the design of in vitro models able to recreate both the chemical composition, the structural architecture, and the overall mechanical environment of the native tissue is still often neglected. In this study, we apply a bioreactor system where human bone-marrow hMSCs are seeded in human femoral head-derived decellularized bone scaffolds and subjected to dynamic culture, i.e., shear stress induced by continuous cell culture medium perfusion at 1.7 mL/min flow rate and compressive stress by 10% uniaxial load at 1 Hz for 1 h per day. In silico modeling revealed that continuous medium flow generates a mean shear stress of 8.5 mPa sensed by hMSCs seeded on 3D bone scaffolds. Experimentally, both dynamic conditions improved cell repopulation within the scaffold and boosted ECM production compared with static controls. Early response of hMSCs to mechanical stimuli comprises evident cell shape changes and stronger integrin-mediated adhesion to the matrix. Stress-induced Col6 and SPP1 gene expression suggests an early hMSC commitment towards osteogenic lineage independent of Runx2 signaling. This study provides a foundation for exploring the early effects of external mechanical stimuli on hMSC behavior in a biologically meaningful in vitro environment, opening new opportunities to study bone development, remodeling, and pathologies.
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Affiliation(s)
- Ana Rita Pereira
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital Wuerzburg, 97070 Wuerzburg, Germany; (A.R.P.); (M.E.)
- Bernhard-Heine-Centrum for Locomotion Research, University of Wuerzburg, 97074 Wuerzburg, Germany
| | - Andreas Lipphaus
- Biomechanics Research Group, Ruhr-University Bochum, 44801 Bochum, Germany;
| | - Mert Ergin
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital Wuerzburg, 97070 Wuerzburg, Germany; (A.R.P.); (M.E.)
- Department of Biomaterials, Center of Energy Technology und Materials Science (TAO), University of Bayreuth, 95447 Bayreuth, Germany;
| | - Sahar Salehi
- Department of Biomaterials, Center of Energy Technology und Materials Science (TAO), University of Bayreuth, 95447 Bayreuth, Germany;
| | | | - Maximilian Rudert
- Department of Orthopedic Surgery, Koenig-Ludwig-Haus, University of Wuerzburg, 97074 Wuerzburg, Germany;
| | - Jan Hansmann
- Fraunhofer Institute for Silicate Research, Translational Center for Regenerative Therapies, 97082 Wuerzburg, Germany;
| | - Marietta Herrmann
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital Wuerzburg, 97070 Wuerzburg, Germany; (A.R.P.); (M.E.)
- Bernhard-Heine-Centrum for Locomotion Research, University of Wuerzburg, 97074 Wuerzburg, Germany
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13
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Cao X, Liu X, Liu Y, Ma R, Sun S. The effect of curvature on chondrocytes migration and bone mesenchymal stem cells differentiation. J Appl Polym Sci 2021. [DOI: 10.1002/app.50392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xing Cao
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen China
| | - Xiangli Liu
- Shenzhen Engineering Laboratory of Aerospace Detection and Imaging, Department of Materials Science and Engineering Harbin Institute of Technology (Shenzhen) Shenzhen China
| | - Yan Liu
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen China
| | - Rui Ma
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen China
| | - Shichang Sun
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen China
- Research Center for Water Science and Environmental Engineering Shenzhen University Shenzhen China
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14
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Antmen E, Demirci U, Hasirci V. Micropatterned Surfaces Expose the Coupling between Actin Cytoskeleton-Lamin/Nesprin and Nuclear Deformability of Breast Cancer Cells with Different Malignancies. Adv Biol (Weinh) 2021; 5:e2000048. [PMID: 33724728 PMCID: PMC9049775 DOI: 10.1002/adbi.202000048] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 10/16/2020] [Indexed: 12/18/2022]
Abstract
Mechanotransduction proteins transfer mechanical stimuli through nucleo-cytoskeletal coupling and affect the nuclear morphology of cancer cells. However, the contribution of actin filament integrity has never been studied directly. It is hypothesized that differences in nuclear deformability of cancer cells are influenced by the integrity of actin filaments. In this study, transparent micropatterned surfaces as simple tools to screen cytoskeletal and nuclear distortions are presented. Surfaces decorated with micropillars are used to culture and image breast cancer cells and quantify their deformation using shape descriptors (circularity, area, perimeter). Using two drugs (cytochalasin D and jasplakinolide), actin filaments are disrupted. Deformation of cells on micropillars is decreased upon drug treatment as shown by increased circularity. However, the effect is much smaller on benign MCF10A than on malignant MCF7 and MDAMB231 cells. On micropatterned surfaces, molecular analysis shows that Lamin A/C and Nesprin-2 expressions decreased but, after drug treatment, increased in malignant cells but not in benign cells. These findings suggest that Lamin A/C, Nesprin-2 and actin filaments are critical in mechanotransduction of cancer cells. Consequently, transparent micropatterned surfaces can be used as image analysis platforms to provide robust, high throughput measurements of nuclear deformability of cancer cells, including the effect of cytoskeletal elements.
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Affiliation(s)
- Ezgi Antmen
- BIOMATEN, Middle East Technical University (METU) Center of Excellence in Biomaterials and Tissue Engineering, Ankara, Turkey
- METU, Department of Biotechnology, Ankara, Turkey
| | - Utkan Demirci
- Department of Radiology, School of Medicine, Stanford University, Palo Alto, CA, USA
| | - Vasif Hasirci
- BIOMATEN, Middle East Technical University (METU) Center of Excellence in Biomaterials and Tissue Engineering, Ankara, Turkey
- METU, Department of Biological Sciences, Ankara, Turkey
- Acibadem Mehmet Ali Aydinlar University, Department of Medical Engineering, Atasehir, Istanbul, Turkey
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15
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Fedele C, Mäntylä E, Belardi B, Hamkins-Indik T, Cavalli S, Netti PA, Fletcher DA, Nymark S, Priimagi A, Ihalainen TO. Azobenzene-based sinusoidal surface topography drives focal adhesion confinement and guides collective migration of epithelial cells. Sci Rep 2020; 10:15329. [PMID: 32948792 PMCID: PMC7501301 DOI: 10.1038/s41598-020-71567-w] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 08/14/2020] [Indexed: 01/09/2023] Open
Abstract
Surface topography is a key parameter in regulating the morphology and behavior of single cells. At multicellular level, coordinated cell displacements drive many biological events such as embryonic morphogenesis. However, the effect of surface topography on collective migration of epithelium has not been studied in detail. Mastering the connection between surface features and collective cellular behaviour is highly important for novel approaches in tissue engineering and repair. Herein, we used photopatterned microtopographies on azobenzene-containing materials and showed that smooth topographical cues with proper period and orientation can efficiently orchestrate cell alignment in growing epithelium. Furthermore, the experimental system allowed us to investigate how the orientation of the topographical features can alter the speed of wound closure in vitro. Our findings indicate that the extracellular microenvironment topography coordinates their focal adhesion distribution and alignment. These topographic cues are able to guide the collective migration of multicellular systems, even when cell-cell junctions are disrupted.
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Affiliation(s)
- Chiara Fedele
- Faculty of Engineering and Natural Sciences, Tampere University, Tampere, Finland
| | - Elina Mäntylä
- BioMediTech and Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Brian Belardi
- Department of Bioengineering and Biophysics Program, University of California, Berkeley, CA, 94720, USA
| | - Tiama Hamkins-Indik
- Department of Bioengineering and Biophysics Program, University of California, Berkeley, CA, 94720, USA
| | - Silvia Cavalli
- Istituto Italiano Di Tecnologia, Center for Advanced Biomaterials for Healthcare @CRIB, Naples, Italy
| | - Paolo A Netti
- Istituto Italiano Di Tecnologia, Center for Advanced Biomaterials for Healthcare @CRIB, Naples, Italy
| | - Daniel A Fletcher
- Department of Bioengineering and Biophysics Program, University of California, Berkeley, CA, 94720, USA
- Chan Zuckerberg Biohub, San Francisco, CA, 94158, USA
- Division of Biological Systems and Engineering, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Soile Nymark
- BioMediTech and Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Arri Priimagi
- Faculty of Engineering and Natural Sciences, Tampere University, Tampere, Finland.
| | - Teemu O Ihalainen
- BioMediTech and Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
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16
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Bjørge IM, Salmeron-Sanchez M, Correia CR, Mano JF. Cell Behavior within Nanogrooved Sandwich Culture Systems. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001975. [PMID: 32603002 DOI: 10.1002/smll.202001975] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/11/2020] [Indexed: 06/11/2023]
Abstract
Grooved topography and inherent cell contact guidance has shown promising results regarding cell proliferation, morphology, and lineage-specific differentiation. Yet these approaches are limited to 2D applications. Sandwich-culture conditions are developed to bridge the gap between 2D and 3D culture, enabling both ventral and dorsal cell surface stimulation. The effect of grooved surface topography is accessed on cell orientation and elongation in a highly controlled manner, with simultaneous and independent stimuli on two cell sides. Nanogrooved and non-nanogrooved substrates are assembled into quasi-3D systems with variable relative orientations. A plethora of sandwich-culture conditions are created by seeding cells on lower, upper, or both substrates. Software image analysis demonstrates that F-actin of cells acquires the orientation of the substrate on which cells are initially seeded, independently from the orientation of the second top substrate. Contrasting cell morphologies are observed, with a higher elongation for nanogrooved 2D substrates than nanogrooved sandwich-culture conditions. Correlated with an increased pFAK activity and vinculin staining for sandwich-culture conditions, these results point to an enhanced cell surface stimulation versus control conditions. The pivotal role of initial cell-biomaterial contact on cellular alignment is highlighted, providing important insights for tissue engineering strategies aiming to guide cellular response through mechanotransduction approaches.
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Affiliation(s)
- Isabel M Bjørge
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, 3810-193, Portugal
| | | | - Clara R Correia
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, 3810-193, Portugal
| | - João F Mano
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, 3810-193, Portugal
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17
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Black RA, Houston G. 40th Anniversary Issue: Reflections on papers from the archive on "Mechanobiology". Med Eng Phys 2020; 72:76-77. [PMID: 31554582 DOI: 10.1016/j.medengphy.2019.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Richard A Black
- Department of Biomedical Engineering, University of Strathclyde, Glasgow, Scotland, UK.
| | - Gregor Houston
- Department of Biomedical Engineering, University of Strathclyde, Glasgow, Scotland, UK
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18
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Antmen E, Demirci U, Hasirci V. Amplification of nuclear deformation of breast cancer cells by seeding on micropatterned surfaces to better distinguish their malignancies. Colloids Surf B Biointerfaces 2019; 183:110402. [DOI: 10.1016/j.colsurfb.2019.110402] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 07/21/2019] [Accepted: 07/26/2019] [Indexed: 12/16/2022]
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19
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Force and Collective Epithelial Activities. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019. [PMID: 31612452 DOI: 10.1007/978-3-030-17593-1_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/27/2023]
Abstract
Cells apply forces to their surroundings to perform basic biological activities, including division, adhesion, and migration. Similarly, cell populations in epithelial tissues coordinate forces in physiological processes of morphogenesis and repair. These activities are highly regulated to yield the correct development and function of the body. The modification of this order is at the onset of pathological events and malfunctions. Mechanical forces and their translation into biological signals are the focus of an emerging field of research, shaping as a central discipline in the study of life and gathering knowledge at the interface of engineering, physics, biology and medicine. Novel engineering methods are needed to complement the classic instruments developed by molecular biology, physics and medicine. These should enable the measurement of forces at the cellular and multicellular level, and at a temporal and spatial resolution which is fully compatible with the ranges experienced by cells in vivo.
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20
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Mammalian Cell Behavior on Hydrophobic Substrates: Influence of Surface Properties. COLLOIDS AND INTERFACES 2019. [DOI: 10.3390/colloids3020048] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The influence of different surface properties holding to a modification of the substrate towards hydrophobic or superhydrophobic behavior was reviewed in this paper. Cell adhesion, their communication, and proliferation can be strongly manipulated, acting on interfacial relationship involving stiffness, surface charge, surface chemistry, roughness, or wettability. All these features can play mutual roles in determining the final properties of biomedical applications ranging from fabrics to cell biology devices. The focus of this work is the mammalian cell viability in contact with moderate to highly water repellent coatings or materials and also in combination with hydrophilic areas for more specific application. Few case studies illustrate a range of examples in which these surface properties and design can be fruitfully matched to the specific aim.
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21
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Wang J, Tian L, Chen N, Ramakrishna S, Mo X. The cellular response of nerve cells on poly-l-lysine coated PLGA-MWCNTs aligned nanofibers under electrical stimulation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 91:715-726. [DOI: 10.1016/j.msec.2018.06.025] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 04/27/2018] [Accepted: 06/11/2018] [Indexed: 11/16/2022]
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22
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Ermis M, Antmen E, Hasirci V. Micro and Nanofabrication methods to control cell-substrate interactions and cell behavior: A review from the tissue engineering perspective. Bioact Mater 2018; 3:355-369. [PMID: 29988483 PMCID: PMC6026330 DOI: 10.1016/j.bioactmat.2018.05.005] [Citation(s) in RCA: 157] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 05/09/2018] [Accepted: 05/10/2018] [Indexed: 02/07/2023] Open
Abstract
Cell-substrate interactions play a crucial role in the design of better biomaterials and integration of implants with the tissues. Adhesion is the binding process of the cells to the substrate through interactions between the surface molecules of the cell membrane and the substrate. There are several factors that affect cell adhesion including substrate surface chemistry, topography, and stiffness. These factors physically and chemically guide and influence the adhesion strength, spreading, shape and fate of the cell. Recently, technological advances enabled us to precisely engineer the geometry and chemistry of substrate surfaces enabling the control of the interaction cells with the substrate. Some of the most commonly used surface engineering methods for eliciting the desired cellular responses on biomaterials are photolithography, electron beam lithography, microcontact printing, and microfluidics. These methods allow production of nano- and micron level substrate features that can control cell adhesion, migration, differentiation, shape of the cells and the nuclei as well as measurement of the forces involved in such activities. This review aims to summarize the current techniques and associate these techniques with cellular responses in order to emphasize the effect of chemistry, dimensions, density and design of surface patterns on cell-substrate interactions. We conclude with future projections in the field of cell-substrate interactions in the hope of providing an outlook for the future studies.
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Affiliation(s)
- Menekse Ermis
- BIOMATEN, Middle East Technical University (METU) Center of Excellence in Biomaterials and Tissue Engineering, Ankara, Turkey
- METU, Department of Biomedical Engineering, Ankara, Turkey
| | - Ezgi Antmen
- BIOMATEN, Middle East Technical University (METU) Center of Excellence in Biomaterials and Tissue Engineering, Ankara, Turkey
- METU, Department of Biotechnology, Ankara, Turkey
| | - Vasif Hasirci
- BIOMATEN, Middle East Technical University (METU) Center of Excellence in Biomaterials and Tissue Engineering, Ankara, Turkey
- METU, Department of Biomedical Engineering, Ankara, Turkey
- METU, Department of Biotechnology, Ankara, Turkey
- METU, Department of Biological Sciences, Ankara, Turkey
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23
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Photopolymerized Microfeatures Guide Adult Spiral Ganglion and Dorsal Root Ganglion Neurite Growth. Otol Neurotol 2018; 39:119-126. [PMID: 29227456 DOI: 10.1097/mao.0000000000001622] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
HYPOTHESIS Microtopographical patterns generated by photopolymerization of methacrylate polymer systems will direct growth of neurites from adult neurons, including spiral ganglion neurons (SGNs). BACKGROUND Cochlear implants (CIs) provide hearing perception to patients with severe to profound hearing loss. However, their ability to encode complex auditory stimuli is limited due, in part, to poor spatial resolution caused by spread of the electrical currents in the inner ear. Directing the regrowth of SGN peripheral processes towards stimulating electrodes could help reduce current spread and improve spatial resolution provided by the CI. Previous work has demonstrated that micro- and nano-scale patterned surfaces precisely guide the growth of neurites from a variety of neonatal neurons including SGNs. Here, we sought to determine the extent to which adult neurons likewise respond to these topographical surface features. METHODS Photopolymerization was used to fabricate methacrylate polymer substrates with micropatterned surfaces of varying amplitudes and periodicities. Dissociated adult dorsal root ganglion neurons (DRGNs) and SGNs were cultured on these surfaces and the alignment of the neurite processes to the micropatterns was determined. RESULTS Neurites from both adult DRGNs and SGNs significantly aligned to the patterned surfaces similar to their neonatal counterparts. Further DRGN and SGN neurite alignment increased as the amplitude of the microfeatures increased. Decreased pattern periodicity also improved neurite alignment. CONCLUSION Microscale surface topographic features direct the growth of adult SGN neurites. Topographical features could prove useful for guiding growth of SGN peripheral axons towards a CI electrode array.
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24
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Amin H, Dipalo M, De Angelis F, Berdondini L. Biofunctionalized 3D Nanopillar Arrays Fostering Cell Guidance and Promoting Synapse Stability and Neuronal Activity in Networks. ACS APPLIED MATERIALS & INTERFACES 2018; 10:15207-15215. [PMID: 29620843 PMCID: PMC5934727 DOI: 10.1021/acsami.8b00387] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 04/05/2018] [Indexed: 05/19/2023]
Abstract
A controlled geometry of in vitro neuronal networks allows investigation of the cellular mechanisms that underlie neuron-to-neuron and neuron-extracellular matrix interactions, which are essential to biomedical research. Herein, we report a selective guidance of primary hippocampal neurons by using arrays of three-dimensional vertical nanopillars (NPs) functionalized with a specific adhesion-promoting molecule-poly-dl-ornithine (PDLO). We show that 90% of neuronal cells are guided exclusively on the combinatorial PDLO/NP substrate. Moreover, we demonstrate the influence of the interplay between nanostructures and neurons on synapse formation and maturation, resulting in increased expression of postsynaptic density-95 protein and enhanced network cellular activity conferred by the endogenous c-fos expression. Successful guidance to foster synapse stability and cellular activity on multilevel cues of surface topography and chemical functionalization suggests the potential to devise technologies to control neuronal growth on nanostructures for tissue engineering, neuroprostheses, and drug development.
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Affiliation(s)
- Hayder Amin
- Nets Laboratory, Department of Neuroscience
and Brain
Technologies (NBT), and Department of Plasmon Nanotechnologies, Fondazione Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genoa, Italy
| | - Michele Dipalo
- Nets Laboratory, Department of Neuroscience
and Brain
Technologies (NBT), and Department of Plasmon Nanotechnologies, Fondazione Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genoa, Italy
| | - Francesco De Angelis
- Nets Laboratory, Department of Neuroscience
and Brain
Technologies (NBT), and Department of Plasmon Nanotechnologies, Fondazione Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genoa, Italy
| | - Luca Berdondini
- Nets Laboratory, Department of Neuroscience
and Brain
Technologies (NBT), and Department of Plasmon Nanotechnologies, Fondazione Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genoa, Italy
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25
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Zhang R, Elkhooly TA, Huang Q, Liu X, Yang X, Yan H, Xiong Z, Ma J, Feng Q, Shen Z. Effects of the hierarchical macro/mesoporous structure on the osteoblast-like cell response. J Biomed Mater Res A 2018. [DOI: 10.1002/jbm.a.36387] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ranran Zhang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering; Tsinghua University; Beijing 100084 China
- Key Laboratory of Advanced Materials of Ministry of Education of China; Tsinghua University; Beijing 100084 China
| | - Tarek A. Elkhooly
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering; Tsinghua University; Beijing 100084 China
- Key Laboratory of Advanced Materials of Ministry of Education of China; Tsinghua University; Beijing 100084 China
- Department of Ceramics; Inorganic Chemical Industries Division, National Research Center; Cairo 12622 Egypt
| | - Qianli Huang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering; Tsinghua University; Beijing 100084 China
- Key Laboratory of Advanced Materials of Ministry of Education of China; Tsinghua University; Beijing 100084 China
| | - Xujie Liu
- Key Laboratory of Advanced Materials of Ministry of Education of China; Tsinghua University; Beijing 100084 China
- Graduate School at Shenzhen, Tsinghua University; Shenzhen 518055 China
| | - Xing Yang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering; Tsinghua University; Beijing 100084 China
- Key Laboratory of Advanced Materials of Ministry of Education of China; Tsinghua University; Beijing 100084 China
| | - Hao Yan
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering; Tsinghua University; Beijing 100084 China
- Key Laboratory of Advanced Materials of Ministry of Education of China; Tsinghua University; Beijing 100084 China
| | - Zhiyuan Xiong
- Key Laboratory of Advanced Materials of Ministry of Education of China; Tsinghua University; Beijing 100084 China
| | - Jing Ma
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering; Tsinghua University; Beijing 100084 China
| | - Qingling Feng
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering; Tsinghua University; Beijing 100084 China
- Key Laboratory of Advanced Materials of Ministry of Education of China; Tsinghua University; Beijing 100084 China
| | - Zhijian Shen
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering; Tsinghua University; Beijing 100084 China
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory; Stockholm University; Stockholm S-106 91 Sweden
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26
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Gui N, Xu W, Myers DE, Shukla R, Tang HP, Qian M. The effect of ordered and partially ordered surface topography on bone cell responses: a review. Biomater Sci 2018; 6:250-264. [DOI: 10.1039/c7bm01016h] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Current understanding of the role of ordered and partially ordered surface topography in bone cell responses for bone implant design.
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Affiliation(s)
- N. Gui
- Centre for Additive Manufacturing
- School of Engineering
- RMIT University
- Melbourne
- Australia
| | - W. Xu
- Department of Engineering
- Macquarie University
- Sydney
- Australia
| | - D. E. Myers
- Australian Institute for Musculoskeletal Science
- Victoria University and University of Melbourne
- Australia
- College of Health and Biomedicine
- Victoria University
| | - R. Shukla
- Nanobiotechnology Research Laboratory and Centre for Advanced Materials & Industrial Chemistry
- School of Science
- RMIT University
- Melbourne
- Australia
| | - H. P. Tang
- State Key Laboratory of Porous Metal Materials
- Northwest Institute for Nonferrous Metal Research
- and Xi'an Sailong Metal Materials Co. Ltd
- Xi'an 710016
- China
| | - M. Qian
- Centre for Additive Manufacturing
- School of Engineering
- RMIT University
- Melbourne
- Australia
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27
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Tsukanaka M, Fujibayashi S, Takemoto M, Matsushita T, Kokubo T, Nakamura T, Sasaki K, Matsuda S. Bioactive treatment promotes osteoblast differentiation on titanium materials fabricated by selective laser melting technology. Dent Mater J 2017; 35:118-25. [PMID: 26830832 DOI: 10.4012/dmj.2015-127] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Selective laser melting (SLM) technology is useful for the fabrication of porous titanium implants with complex shapes and structures. The materials fabricated by SLM characteristically have a very rough surface (average surface roughness, Ra=24.58 µm). In this study, we evaluated morphologically and biochemically the specific effects of this very rough surface and the additional effects of a bioactive treatment on osteoblast proliferation and differentiation. Flat-rolled titanium materials (Ra=1.02 µm) were used as the controls. On the treated materials fabricated by SLM, we observed enhanced osteoblast differentiation compared with the flat-rolled materials and the untreated materials fabricated by SLM. No significant differences were observed between the flat-rolled materials and the untreated materials fabricated by SLM in their effects on osteoblast differentiation. We concluded that the very rough surface fabricated by SLM had to undergo a bioactive treatment to obtain a positive effect on osteoblast differentiation.
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Affiliation(s)
- Masako Tsukanaka
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University
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28
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Biological effects of direct and indirect manipulation of the fascial system. Narrative review. J Bodyw Mov Ther 2017; 21:435-445. [DOI: 10.1016/j.jbmt.2017.01.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 12/16/2016] [Accepted: 01/03/2017] [Indexed: 01/08/2023]
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Berti FV, Srisuk P, da Silva LP, Marques AP, Reis RL, Correlo VM. * Synthesis and Characterization of Electroactive Gellan Gum Spongy-Like Hydrogels for Skeletal Muscle Tissue Engineering Applications. Tissue Eng Part A 2017; 23:968-979. [PMID: 28152667 DOI: 10.1089/ten.tea.2016.0430] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Advances on materials' research for tissue engineering (TE) applications have shown that animal cells respond directly to the material physical, chemical, mechanical, and electrical stimuli altering a variety of cell signaling cascades, which consequently result in phenotypic and genotypic alterations. Gellan gum (GG) spongy-like hydrogels (SLH) with open microstructure, mechanical properties, and cell performance have shown promising results for soft TE applications. Taking advantage of intrinsic properties of GG-SLH and polypyrrole (PPy) electroactivity, we developed electroactive PPy-GG-SLH envisaging their potential use for skeletal muscle TE. Three different methods of in situ chemical oxidative polymerization were developed based on the availability of pyrrole: freely dissolved in solution (method I and III) or immobilized into GG hydrogels (method II). PPy was homogeneously distributed within (method I and III) and on the surface (method II) of GG-SLH, as also confirmed by Fourier Transform infrared spectra. PPy-GG-SLH showed higher conductivity than GG-SLH (p < 0.05) whereas PPy-GG-SLH (method I and II) showed the best conductivity among the 3 methods (∼1 to 2 × 10-4 S/cm). The microarchitecture of PPy-GG-SLH (method I) was similar to GG-SLH but PPy-GG-SLH (method II and III) presented smaller pore sizes and lower porosity. PPy-GG-SLH (method I and II) compressive modulus (∼450-500 KPa) and recovering capacity (∼75-90%) was higher than GG-SLH, nevertheless the mechanical properties of PPy-GG-SLH (method III) were lower. The water uptake of PPy-GG-SLH was rapidly up to 2500% and were stable along 60 days of degradation being the maximum weight loss 20%. Mechanically stable and electroactive PPy-GG-SLH (method I and II) were analyzed regarding cellular performance. PPy-GG-SLH were not cytotoxic for L929 cells. In addition, L929 and C2C12 myoblast cells were able to adhere and spread within PPy-GG-SLH, showing improved spreading in comparison to GG-SLH performance. Overall, PPy-GG-SLH show promising features as an alternative electroactive platform to analyze the influence of electrical stimulation on skeletal muscle cells.
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Affiliation(s)
- Fernanda V Berti
- 1 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho , Guimarães, Portugal .,2 ICVS/3B's-PT Government Associate Laboratory , Guimarães, Portugal
| | - Pathomthat Srisuk
- 1 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho , Guimarães, Portugal .,2 ICVS/3B's-PT Government Associate Laboratory , Guimarães, Portugal .,3 Faculty of Pharmaceutical Sciences, Division of Pharmaceutical Technology, Khon Kaen University , Khon Kaen, Thailand
| | - Lucília P da Silva
- 1 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho , Guimarães, Portugal .,2 ICVS/3B's-PT Government Associate Laboratory , Guimarães, Portugal
| | - Alexandra P Marques
- 1 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho , Guimarães, Portugal .,2 ICVS/3B's-PT Government Associate Laboratory , Guimarães, Portugal
| | - Rui L Reis
- 1 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho , Guimarães, Portugal .,2 ICVS/3B's-PT Government Associate Laboratory , Guimarães, Portugal
| | - Vitor M Correlo
- 1 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho , Guimarães, Portugal .,2 ICVS/3B's-PT Government Associate Laboratory , Guimarães, Portugal
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Englund-Johansson U, Netanyah E, Johansson F. Tailor-Made Electrospun Culture Scaffolds Control Human Neural Progenitor Cell Behavior—Studies on Cellular Migration and Phenotypic Differentiation. ACTA ACUST UNITED AC 2017. [DOI: 10.4236/jbnb.2017.81001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Cao L, Weng W, Chen X, Zhang J, Zhou Q, Cui J, Wang L, Shin JW, Su J. Effects of mesoporous calcium magnesium silicate on setting time, compressive strength, apatite formation, degradability and cell behavior to magnesium phosphate based bone cements. RSC Adv 2017. [DOI: 10.1039/c6ra25503e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Mesoporous calcium magnesium silicate was doped into magnesium phosphate to fabricate magnesium phosphate based composite cements (MBC).
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Affiliation(s)
- Liehu Cao
- Department of Orthopaedics Trauma
- Changhai Hospital
- Second Military Medical University
- Shanghai 200433
- China
| | - Weizong Weng
- Department of Orthopaedics Trauma
- Changhai Hospital
- Second Military Medical University
- Shanghai 200433
- China
| | - Xiao Chen
- Department of Orthopaedics Trauma
- Changhai Hospital
- Second Military Medical University
- Shanghai 200433
- China
| | - Jun Zhang
- Department of Orthopaedics Trauma
- Changhai Hospital
- Second Military Medical University
- Shanghai 200433
- China
| | - Qirong Zhou
- Department of Orthopaedics Trauma
- Changhai Hospital
- Second Military Medical University
- Shanghai 200433
- China
| | - Jin Cui
- Department of Orthopaedics Trauma
- Changhai Hospital
- Second Military Medical University
- Shanghai 200433
- China
| | - Lin Wang
- Department of Orthopaedics Trauma
- Changhai Hospital
- Second Military Medical University
- Shanghai 200433
- China
| | - Jung-Woog Shin
- Department of Biomedical Engineering
- Inje University
- Gimhae
- Republic of Korea
| | - Jiacan Su
- Department of Orthopaedics Trauma
- Changhai Hospital
- Second Military Medical University
- Shanghai 200433
- China
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Greiner AM, Sales A, Chen H, Biela SA, Kaufmann D, Kemkemer R. Nano- and microstructured materials for in vitro studies of the physiology of vascular cells. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2016; 7:1620-1641. [PMID: 28144512 PMCID: PMC5238670 DOI: 10.3762/bjnano.7.155] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Accepted: 10/04/2016] [Indexed: 05/21/2023]
Abstract
The extracellular environment of vascular cells in vivo is complex in its chemical composition, physical properties, and architecture. Consequently, it has been a great challenge to study vascular cell responses in vitro, either to understand their interaction with their native environment or to investigate their interaction with artificial structures such as implant surfaces. New procedures and techniques from materials science to fabricate bio-scaffolds and surfaces have enabled novel studies of vascular cell responses under well-defined, controllable culture conditions. These advancements are paving the way for a deeper understanding of vascular cell biology and materials-cell interaction. Here, we review previous work focusing on the interaction of vascular smooth muscle cells (SMCs) and endothelial cells (ECs) with materials having micro- and nanostructured surfaces. We summarize fabrication techniques for surface topographies, materials, geometries, biochemical functionalization, and mechanical properties of such materials. Furthermore, various studies on vascular cell behavior and their biological responses to micro- and nanostructured surfaces are reviewed. Emphasis is given to studies of cell morphology and motility, cell proliferation, the cytoskeleton and cell-matrix adhesions, and signal transduction pathways of vascular cells. We finalize with a short outlook on potential interesting future studies.
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Affiliation(s)
- Alexandra M Greiner
- Karlsruhe Institute of Technology (KIT), Institute of Zoology, Department of Cell and Neurobiology, Haid-und-Neu-Strasse 9, 76131 Karlsruhe, Germany
- now at: Pforzheim University, School of Engineering, Tiefenbronner Strasse 65, 75175 Pforzheim, Germany
| | - Adria Sales
- Max Planck Institute for Intelligent Systems, Department of New Materials and Biosystems, Heisenbergstrasse 3, 70569 Stuttgart, Germany
| | - Hao Chen
- Karlsruhe Institute of Technology (KIT), Institute of Zoology, Department of Cell and Neurobiology, Haid-und-Neu-Strasse 9, 76131 Karlsruhe, Germany
| | - Sarah A Biela
- Max Planck Institute for Intelligent Systems, Department of New Materials and Biosystems, Heisenbergstrasse 3, 70569 Stuttgart, Germany
| | - Dieter Kaufmann
- Universitätsklinikum Ulm, Institut für Humangenetik, Albert Einstein Allee 11, 89070 Ulm, Germany
| | - Ralf Kemkemer
- Max Planck Institute for Intelligent Systems, Department of New Materials and Biosystems, Heisenbergstrasse 3, 70569 Stuttgart, Germany
- Reutlingen University, Faculty of Applied Chemistry, Alteburgstrasse 150, 72762 Reutlingen, Germany
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Aminuddin NI, Ahmad R, Akbar SA, Pingguan-Murphy B. Osteoblast and stem cell response to nanoscale topographies: a review. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2016; 17:698-714. [PMID: 27933112 PMCID: PMC5127258 DOI: 10.1080/14686996.2016.1242999] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 09/26/2016] [Accepted: 09/27/2016] [Indexed: 06/06/2023]
Abstract
To understand how cells respond to the nanoscale extracellular environment in vivo, cells from various sources have been cultured on nanoscale patterns fabricated using bottom-up and top-down techniques. Human fetal osteoblasts (hFOBs) and stem cells are some of them and they are known to be overtly responsive to nanoscale topographies - allowing us to investigate the hows and whys of the response in vitro. Information gathered from these in vitro studies could be used to control the cells, i.e. make the stem cells differentiate or retain their characteristics without the use of medium supplements. In this review, hFOB and stem cell responses to nanotopographies are summarized and discussed to shed some light on the influence of patterns on the reactions. Although both types of cells are responsive to nanoscale topographies, the responses are found to be unique to topographical dimension, shape, orientation and the types of cells used. This implies that cellular responses are influenced by multitude of factors and that if done right, cheaper self-assembled nanotopographies can be tailored to control the cells. A new self-assembly, powder-based technique is also included to provide an insight into the future of nanofabrication.
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Affiliation(s)
- Nur Izzati Aminuddin
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
| | - Roslina Ahmad
- Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
| | - Sheikh Ali Akbar
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, USA
| | - Belinda Pingguan-Murphy
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
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Castillo-Dalí G, Castillo-Oyagüe R, Terriza A, Saffar JL, Batista A, Barranco A, Cabezas-Talavero J, Lynch CD, Barouk B, Llorens A, Sloan AJ, Cayón RV, Gutiérrez-Pérez JL, Torres-Lagares D. In vivo comparative model of oxygen plasma and nanocomposite particles on PLGA membranes for guided bone regeneration processes to be applied in pre-prosthetic surgery: a pilot study. J Dent 2016; 42:1446-57. [PMID: 24814137 DOI: 10.1016/j.jdent.2014.04.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 04/22/2014] [Accepted: 04/28/2014] [Indexed: 12/01/2022] Open
Abstract
OBJECTIVES To evaluate the bone regeneration potential of a new membrane fabricated with polyglycolide acid (PLGA) after being treated with oxygen plasma (PO2), and/or being functionalized with silicon dioxide (SiO2) or titanium dioxide (TiO2) nanoparticles. METHODS Bone defects (5 mm 3 mm) were produced on the top of 3 experimentation rabbits’ skulls and were covered with variously modified PLGA scaffolds. After the animals were sacrificed, neoformed bone (%), mineralized bone (mm), bone resorption (%), osteoclasts/mm2, and intensity of osteosynthetic activity, were assessed under microscope. RESULTS The following groups were formed depending on the type of membrane: PLGA (control); PLGA/PO2; PLGA/SiO2; PLGA/TiO2; PLGA/PO2/SiO2; and PLGA/PO2/TiO2. The histological sections showed bone layers in advanced stages of formation. The highest percentages of neoformed bone corresponded to PLGA/PO2/SiO2 membranes (59.07%; p = 0.31) followed by PLGA/PO2 barriers (50.27%). The controls showed the lowest mineralization (13.89 mm; p = 0.24). PLGA/TiO2 scaffolds exhibited the least bone resorption (4.45%; p = 0.77) and osteoclasts/ mm2 (1.58; p = 0.86). PLGA/SiO2 and PLGA/TiO2 membranes stimulated the maximum osteosynthetic activity. CONCLUSIONS The treatment of PLGA barriers with PO2 increased bone regeneration in rabbits. When comparing the effect of PO2/SiO2 and PO2/TiO2, higher percentages of neoformed bone were encountered after silicon-dioxide coating. CLINICAL SIGNIFICANCE The incorporation of SiO2 nanoparticles onto PO2-treated PLGA membranes was the most promising technique out of those investigated to promote bone formation in rabbits. The addition of SiO2 or TiO2 layers to PLGA substrates may stimulate the osteosynthetic activity, which might be useful to restore bone dimensions in preparation for naturally appearing dental prostheses.
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Jahed Z, Zareian R, Chau YY, Seo BB, West M, Tsui TY, Wen W, Mofrad MRK. Differential Collective- and Single-Cell Behaviors on Silicon Micropillar Arrays. ACS APPLIED MATERIALS & INTERFACES 2016; 8:23604-13. [PMID: 27536959 DOI: 10.1021/acsami.6b08668] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Three-dimensional vertically aligned nano- and micropillars have emerged as promising tools for a variety of biological applications. Despite their increasing usage, the interaction mechanisms of cells with these rigid structures and their effect on single- and collective-cell behaviors are not well understood for different cell types. In the present study, we examine the response of glioma cells to micropillar arrays using a new microfabricated platform consisting of rigid silicon micropillar arrays of various shapes, sizes, and configurations fabricated on a single platform. We compare collective- and single-cell behaviors at micropillar array interfaces and show that glial cells under identical chemical conditions form distinct arrangements on arrays of different shapes and sizes. Tumor-like aggregation and branching of glial cells only occur on arrays with feature diameters greater than 2 μm, and distinct transitions are observed at interfaces between various arrays on the platform. Additionally, despite the same side-to-side spacing and gaps between micropillars, single glial cells interact with the flat silicon surface in the gap between small pillars but sit on top of larger micropillars. Furthermore, micropillars induced local changes in stress fibers and actin-rich filopodia protrusions as the cells conformed to the shape of spatial cues formed by these micropillars.
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Affiliation(s)
- Zeinab Jahed
- Molecular Cell Biomechanics Laboratory, Departments of Bioengineering and Mechanical Engineering, University of California-Berkeley , 208A Stanley Hall, Berkeley, California 94720-1762, United States
| | - Ramin Zareian
- Molecular Cell Biomechanics Laboratory, Departments of Bioengineering and Mechanical Engineering, University of California-Berkeley , 208A Stanley Hall, Berkeley, California 94720-1762, United States
| | - Yeung Yeung Chau
- Department of Physics, The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong, China
| | - Brandon B Seo
- Department of Chemical Engineering, University of Waterloo , 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Mary West
- Molecular Cell Biomechanics Laboratory, Departments of Bioengineering and Mechanical Engineering, University of California-Berkeley , 208A Stanley Hall, Berkeley, California 94720-1762, United States
| | - Ting Y Tsui
- Department of Chemical Engineering, University of Waterloo , 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Weijia Wen
- Department of Physics, The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong, China
| | - Mohammad R K Mofrad
- Molecular Cell Biomechanics Laboratory, Departments of Bioengineering and Mechanical Engineering, University of California-Berkeley , 208A Stanley Hall, Berkeley, California 94720-1762, United States
- Molecular Biophysics and Integrative Bioimaging Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
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Tian L, Prabhakaran MP, Hu J, Chen M, Besenbacher F, Ramakrishna S. Synergistic effect of topography, surface chemistry and conductivity of the electrospun nanofibrous scaffold on cellular response of PC12 cells. Colloids Surf B Biointerfaces 2016; 145:420-429. [DOI: 10.1016/j.colsurfb.2016.05.032] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 04/15/2016] [Accepted: 05/11/2016] [Indexed: 01/02/2023]
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Kyle DJT, Oikonomou A, Hill E, Vijayaraghavan A, Bayat A. Fabrication and modelling of fractal, biomimetic, micro and nano-topographical surfaces. BIOINSPIRATION & BIOMIMETICS 2016; 11:046009. [PMID: 27454401 DOI: 10.1088/1748-3190/11/4/046009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Natural surface topographies are often self-similar with hierarchical features at the micro and nanoscale, which may be mimicked to overcome modern tissue engineering and biomaterial design limitations. Specifically, a cell's microenvironment within the human body contains highly optimised, fractal topographical cues, which directs precise cell behaviour. However, recreating biomimetic, fractal topographies in vitro is not a trivial process and a number of fabrication methods have been proposed but often fail to precisely control the spatial resolution of features at different lengths scales and hence, to provide true biomimetic properties. Here, we propose a method of accurately reproducing the self-similar, micro and nanoscale topography of a human biological tissue into a synthetic polymer through an innovative fabrication process. The biological tissue surface was characterised using atomic force microscopy (AFM) to obtain spatial data in X, Y and Z, which was converted into a grayscale 'digital photomask'. As a result of maskless grayscale optical lithography followed by modified deep reactive ion etching and replica molding, we were able to accurately reproduce the fractal topography of acellular dermal matrix (ADM) into polydimethylsiloxane (PDMS). Characterisation using AFM at three different length scales revealed that the nano and micro-topographical features, in addition to the fractal dimension, of native ADM were reproduced in PDMS. In conclusion, it has been shown that the fractal topography of biological surfaces can be mimicked in synthetic materials using the novel fabrication process outlined, which may be applied to significantly enhance medical device biocompatibility and performance.
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Affiliation(s)
- Daniel J T Kyle
- Plastic and Reconstructive Surgery Research, Manchester Institute of Biotechnology, The University of Manchester, Manchester, UK. School of Computer Science, Centre for Mesoscience and Nanotechnology, The University of Manchester, Manchester, UK
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Shi X, Xiao Y, Xiao H, Harris G, Wang T, Che J. Topographic guidance based on microgrooved electroactive composite films for neural interface. Colloids Surf B Biointerfaces 2016; 145:768-776. [PMID: 27295493 DOI: 10.1016/j.colsurfb.2016.05.086] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 04/20/2016] [Accepted: 05/28/2016] [Indexed: 01/19/2023]
Abstract
Topographical features are essential to neural interface for better neuron attachment and growth. This paper presents a facile and feasible route to fabricate an electroactive and biocompatible micro-patterned Single-walled carbon nanotube/poly(3,4-ethylenedioxythiophene) composite films (SWNT/PEDOT) for interface of neural electrodes. The uniform SWNT/PEDOT composite films with nanoscale pores and microscale grooves significantly enlarged the electrode-electrolyte interface, facilitated ion transfer within the bulk film, and more importantly, provided topology cues for the proliferation and differentiation of neural cells. Electrochemical analyses indicated that the introduction of PEDOT greatly improved the stability of the SWNT/PEDOT composite film and decreased the electrode/electrolyte interfacial impedance. Further, in vitro culture of rat pheochromocytoma (PC12) cells and MTT testing showed that the grooved SWNT/PEDOT composite film was non-toxic and favorable to guide the growth and extension of neurite. Our results demonstrated that the fabricated microscale groove patterns were not only beneficial in the development of models for nervous system biology, but also in creating therapeutic approaches for nerve injuries.
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Affiliation(s)
- Xiaoyao Shi
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210014, China
| | - Yinghong Xiao
- College of Dentistry, Howard University, Washington, DC 20059, USA; Collaborative Innovation Center for Biomedical Functional Materials, Nanjing Normal University, Nanjing 210046, China
| | - Hengyang Xiao
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210014, China
| | - Gary Harris
- College of Engineering, Howard University, Washington, DC 20059, USA
| | - Tongxin Wang
- College of Dentistry, Howard University, Washington, DC 20059, USA; College of Engineering, Howard University, Washington, DC 20059, USA.
| | - Jianfei Che
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210014, China; College of Engineering, Howard University, Washington, DC 20059, USA.
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de Vicente G, Lensen MC. Topographically and elastically micropatterned PEG-based hydrogels to control cell adhesion and migration. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.03.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Huang Q, Elkhooly TA, Liu X, Zhang R, Yang X, Shen Z, Feng Q. Effects of hierarchical micro/nano-topographies on the morphology, proliferation and differentiation of osteoblast-like cells. Colloids Surf B Biointerfaces 2016; 145:37-45. [PMID: 27137801 DOI: 10.1016/j.colsurfb.2016.04.031] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 04/06/2016] [Accepted: 04/18/2016] [Indexed: 12/26/2022]
Abstract
Coating the surfaces of titanium-based implants with appropriate hierarchical micro/nano-topographies resembling the structure of natural bone significantly enhances their biological performance. However, the relationship between nanostructures surfaces and their effects on modulating cellular response is not clearly understood. Moreover, it is not clear whether the surface chemistry or topography is the main factor on modulating cellular behavior, because the commonly used surface modification techniques for titanium-based implants simultaneously modify surface topography and chemistry. The aim of this study is to investigate osteoblast-like cell adhesion, proliferation and differentiation on hierarchical micro/nano-topographies with similar surface chemistry but different nano-scale features. Micro-arc oxidation and post hydrothermal treatment were employed to fabricate micro/nano-topographies on titanium. According to the morphological features, they were classified as microcrater (micro-topography), nanoplate (hierarchical topography with nanoplates) and nanoleaf (hierarchical topography with nanoleaves). The response of osteoblast like cells (SaOS-2) was studied on each surface after sputtering with a thin layer of gold (Au) to minimize the influence of surface chemistry. The morphological evaluation after histochemical staining revealed that the adherent cells were polygonal-shaped on microcrater surface, roundish on nanoplate surface and elongated on nanoleaf surface. Additionally, compared to microcrater surface, nanoplate surface slowed down cell proliferation and exhibited no enhancement on cell differentiation. However, nanoleaf surface supported cell proliferation and promoted cell differentiation. The results indicate that tuning morphological features of nanostructures on micro-topography can serve as a promising strategy to specifically modulate cellular response, such as cell morphology, proliferation, differentiation and mineralization.
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Affiliation(s)
- Qianli Huang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Tarek A Elkhooly
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; Department of Ceramics, Inorganic Chemical Industries Division, National Research Centre, Dokki, 12622 Cairo, Egypt
| | - Xujie Liu
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
| | - Ranran Zhang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Xing Yang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Zhijian Shen
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Qingling Feng
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; Key Laboratory of Advanced Materials of Ministry of Education of China, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
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Salou L, Hoornaert A, Stanovici J, Briand S, Louarn G, Layrolle P. Comparative bone tissue integration of nanostructured and microroughened dental implants. Nanomedicine (Lond) 2016; 10:741-51. [PMID: 25816877 DOI: 10.2217/nnm.14.223] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM The aim was to compare osteointegration of nanostructured implants to a microsurface widely used for titanium dental implants. MATERIALS & METHODS Commercial titanium dental implants with smooth or microroughened surfaces were nanostructured. Implants were inserted into the femoral condyles of rabbits. After 2 and 4 weeks, histomorphometry calculation was performed. RESULTS Nanotubes measuring 60 nm in diameter were observed on both S-NANO (roughness: 0.05 μm) and R-NANO (roughness: 0.40 μm) surfaces. The MICRO surface exhibited typical random cavities (roughness: 2.09 μm). At 4 weeks, bone-to-implant contact values were significantly higher for the R-NANO than for the MICRO surface while no differences were observed at 2 weeks. CONCLUSION Overall, this study shows that the nanostructured surfaces improved osteointegration similar or higher than the MICRO.
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Affiliation(s)
- Laëtitia Salou
- Inserm U957, Lab. Pathophysiology of Bone Resorption, Faculty of Medicine, University of Nantes, France
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Tonazzini I, Meucci S, Van Woerden GM, Elgersma Y, Cecchini M. Impaired Neurite Contact Guidance in Ubiquitin Ligase E3a (Ube3a)-Deficient Hippocampal Neurons on Nanostructured Substrates. Adv Healthc Mater 2016; 5:850-62. [PMID: 26845073 DOI: 10.1002/adhm.201500815] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 11/09/2015] [Indexed: 12/21/2022]
Abstract
Recent discoveries indicate that during neuronal development the signaling processes that regulate extracellular sensing (e.g., adhesion, cytoskeletal dynamics) are important targets for ubiquitination-dependent regulation, in particular through E3 ubiquitin ligases. Among these, Ubiquitin E3a ligase (UBE3A) has a key role in brain functioning, but its function and how its deficiency results in the neurodevelopmental disorder Angelman syndrome is still unclear. Here, the role of UBE3A is investigated in neurite contact guidance during neuronal development, in vitro. The microtopography sensing of wild-type and Ube3a-deficient hippocampal neurons is studied by exploiting gratings with different topographical characteristics, with the aim to compare their capabilities to read and follow physical directional stimuli. It is shown that neuronal contact guidance is defective in Ube3a-deficient neurons, and this behavior is linked to an impaired activation of the focal adhesion signaling pathway. Taken together, the results suggest that the neuronal contact sensing machinery might be affected in Angelman syndrome.
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Affiliation(s)
- I. Tonazzini
- NEST; Istituto Nanoscienze-CNR and Scuola Normale Superiore; Piazza San Silvestro 12 56127 Pisa Italy
- Fondazione Umberto Veronesi; Piazza Velasca 5 20122 Milano Italy
| | - S. Meucci
- NEST; Istituto Nanoscienze-CNR and Scuola Normale Superiore; Piazza San Silvestro 12 56127 Pisa Italy
| | - G. M. Van Woerden
- Department of Neuroscience; ENCORE Expertise Center for Neurodevelopmental Disorders; Erasmus MC, Wytemaweg 80 3000 CA Rotterdam The Netherlands
| | - Y. Elgersma
- Department of Neuroscience; ENCORE Expertise Center for Neurodevelopmental Disorders; Erasmus MC, Wytemaweg 80 3000 CA Rotterdam The Netherlands
| | - M. Cecchini
- NEST; Istituto Nanoscienze-CNR and Scuola Normale Superiore; Piazza San Silvestro 12 56127 Pisa Italy
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Castillo-Dalí G, Castillo-Oyagüe R, Terriza A, Saffar JL, Batista-Cruzado A, Lynch CD, Sloan AJ, Gutiérrez-Pérez JL, Torres-Lagares D. 'Pre-prosthetic use of poly(lactic-co-glycolic acid) membranes treated with oxygen plasma and TiO2 nanocomposite particles for guided bone regeneration processes'. J Dent 2016; 47:71-9. [PMID: 26850906 DOI: 10.1016/j.jdent.2016.01.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 01/22/2016] [Accepted: 01/31/2016] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES Guided bone regeneration (GBR) processes are frequently necessary to achieve appropriate substrates before the restoration of edentulous areas. This study aimed to evaluate the bone regeneration reliability of a new poly-lactic-co-glycolic acid (PLGA) membrane after treatment with oxygen plasma (PO2) and titanium dioxide (TiO2) composite nanoparticles. METHODS Circumferential bone defects (diameter: 10mm; depth: 3mm) were created on the parietal bones of eight experimentation rabbits and were randomly covered with control membranes (Group 1: PLGA) or experimental membranes (Group 2: PLGA/PO2/TiO2). The animals were euthanized two months afterwards, and a morphologic study was then performed under microscope using ROI (region of interest) colour analysis. Percentage of new bone formation, length of mineralised bone formed in the grown defects, concentration of osteoclasts, and intensity of osteosynthetic activity were assessed. Comparisons among the groups and with the original bone tissue were made using the Kruskal-Wallis test. The level of significance was set in advance at a=0.05. RESULTS The experimental group recorded higher values for new bone formation, mineralised bone length, and osteoclast concentration; this group also registered the highest osteosynthetic activity. Bone layers in advanced formation stages and low proportions of immature tissue were observed in the study group. CONCLUSIONS The functionalised membranes showed the best efficacy for bone regeneration. CLINICAL SIGNIFICANCE The addition of TiO2 nanoparticles onto PLGA/PO2 membranes for GBR processes may be a promising technique to restore bone dimensions and anatomic contours as a prerequisite to well-supported and natural-appearing prosthetic rehabilitations.
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Affiliation(s)
- Gabriel Castillo-Dalí
- Department of Stomatology, Faculty of Dentistry, University of Seville (US), C/Avicena, s/n, 41009 Seville, Spain
| | - Raquel Castillo-Oyagüe
- Department of Buccofacial Prostheses, Faculty of Dentistry, Complutense University of Madrid (UCM), Pza. Ramón y Cajal, s/n, 28040 Madrid, Spain.
| | - Antonia Terriza
- Institute of Materials Sciences, Advanced Center of Scientific Research (CSIC), Avda. Américo Vespuccio, no. 49, Isla de la Cartuja, 41092 Seville, Spain
| | - Jean-Louis Saffar
- Faculté de Chirurgie Dentaire, Université Paris V- Descartes, rue Maurice Arnoux, no. 1, 92120 Montrouge, Paris, France
| | - Antonio Batista-Cruzado
- Faculté de Chirurgie Dentaire, Université Paris V- Descartes, rue Maurice Arnoux, no. 1, 92120 Montrouge, Paris, France
| | - Christopher D Lynch
- School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, CF14 4XY, Cardiff, Wales, UK
| | - Alastair J Sloan
- School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, CF14 4XY, Cardiff, Wales, UK
| | - José-Luis Gutiérrez-Pérez
- Department of Stomatology, Faculty of Dentistry, University of Seville (US), C/Avicena, s/n, 41009 Seville, Spain
| | - Daniel Torres-Lagares
- Department of Stomatology, Faculty of Dentistry, University of Seville (US), C/Avicena, s/n, 41009 Seville, Spain
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Heading in the Right Direction: Understanding Cellular Orientation Responses to Complex Biophysical Environments. Cell Mol Bioeng 2015; 9:12-37. [PMID: 26900408 PMCID: PMC4746215 DOI: 10.1007/s12195-015-0422-7] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 10/10/2015] [Indexed: 01/09/2023] Open
Abstract
The aim of cardiovascular regeneration is to mimic the biological and mechanical functioning of tissues. For this it is crucial to recapitulate the in vivo cellular organization, which is the result of controlled cellular orientation. Cellular orientation response stems from the interaction between the cell and its complex biophysical environment. Environmental
biophysical cues are continuously detected and transduced to the nucleus through entwined mechanotransduction pathways. Next to the biochemical cascades invoked by the mechanical stimuli, the structural mechanotransduction pathway made of focal adhesions and the actin cytoskeleton can quickly transduce the biophysical signals directly to the nucleus. Observations linking cellular orientation response to biophysical cues have pointed out that the anisotropy and cyclic straining of the substrate influence cellular orientation. Yet, little is known about the mechanisms governing cellular orientation responses in case of cues applied separately and in combination. This review provides the state-of-the-art knowledge on the structural mechanotransduction pathway of adhesive cells, followed by an overview of the current understanding of cellular orientation responses to substrate anisotropy and uniaxial cyclic strain. Finally, we argue that comprehensive understanding of cellular orientation in complex biophysical environments requires systematic approaches based on the dissection of (sub)cellular responses to the individual cues composing the biophysical niche.
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Innate Immunity and Biomaterials at the Nexus: Friends or Foes. BIOMED RESEARCH INTERNATIONAL 2015; 2015:342304. [PMID: 26247017 PMCID: PMC4515263 DOI: 10.1155/2015/342304] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 06/15/2015] [Accepted: 06/22/2015] [Indexed: 01/04/2023]
Abstract
Biomaterial implants are an established part of medical practice, encompassing a broad range of devices that widely differ in function and structural composition. However, one common property amongst biomaterials is the induction of the foreign body response: an acute sterile inflammatory reaction which overlaps with tissue vascularisation and remodelling and ultimately fibrotic encapsulation of the biomaterial to prevent further interaction with host tissue. Severity and clinical manifestation of the biomaterial-induced foreign body response are different for each biomaterial, with cases of incompatibility often associated with loss of function. However, unravelling the mechanisms that progress to the formation of the fibrotic capsule highlights the tightly intertwined nature of immunological responses to a seemingly noncanonical “antigen.” In this review, we detail the pathways associated with the foreign body response and describe possible mechanisms of immune involvement that can be targeted. We also discuss methods of modulating the immune response by altering the physiochemical surface properties of the biomaterial prior to implantation. Developments in these areas are reliant on reproducible and effective animal models and may allow a “combined” immunomodulatory approach of adapting surface properties of biomaterials, as well as treating key immune pathways to ultimately reduce the negative consequences of biomaterial implantation.
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46
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Tan KKB, Giam CSY, Leow MY, Chan CW, Yim EKF. Differential cell adhesion of breast cancer stem cells on biomaterial substrate with nanotopographical cues. J Funct Biomater 2015; 6:241-58. [PMID: 25905435 PMCID: PMC4493510 DOI: 10.3390/jfb6020241] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 04/10/2015] [Accepted: 04/15/2015] [Indexed: 01/05/2023] Open
Abstract
Cancer stem cells are speculated to have the capability of self-renewal and re-establishment of tumor heterogeneity, possibly involved in the potential relapse of cancer. CD44+CD24-/lowESA+ cells have been reported to possess tumorigenic properties, and these biomarkers are thought to be highly expressed in breast cancer stem cells. Cell behavior can be influenced by biomolecular and topographical cues in the natural microenvironment. We hypothesized that different cell populations in breast cancer tissue exhibit different adhesion characteristics on substrates with nanotopography. Adhesion characterizations were performed using human mammary epithelial cells (HMEC), breast cancer cell line MCF7 and primary invasive ductal carcinoma (IDC) cells obtained from patients' samples, on micro- and nano-patterned poly-L-lactic acid (PLLA) films. Topography demonstrated a significant effect on cell adhesion, and the effect was cell type dependent. Cells showed elongation morphology on gratings. The CD44+CD24-/lowESA+ subpopulation in MCF7 and IDC cells showed preferential adhesion on 350-nm gratings. Flow cytometry analysis showed that 350-nm gratings captured a significantly higher percentage of CD44+CD24- in MCF7. A slightly higher percentage of CD44+CD24-/lowESA+ was captured on the 350-nm gratings, although no significant difference was observed in the CD44+CD24-ESA+ in IDC cells across patterns. Taken together, the study demonstrated that the cancer stem cell subpopulation could be enriched using different nanopatterns. The enriched population could subsequently aid in the isolation and characterization of cancer stem cells.
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Affiliation(s)
- Kenneth K B Tan
- Mechanobiology Institute, National University of Singapore, T-Lab, #05-01, 5A Engineering Drive 1, Singapore 117411.
| | - Christine S Y Giam
- Department of Biomedical Engineering, National University of Singapore, EA-03-12, 9 Engineering Drive 1, Singapore 117575.
| | - Ming Yi Leow
- Department of Biomedical Engineering, National University of Singapore, EA-03-12, 9 Engineering Drive 1, Singapore 117575.
| | - Ching Wan Chan
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 8, 1E Kent Ridge Road, Singapore 119228.
| | - Evelyn K F Yim
- Mechanobiology Institute, National University of Singapore, T-Lab, #05-01, 5A Engineering Drive 1, Singapore 117411.
- Department of Biomedical Engineering, National University of Singapore, EA-03-12, 9 Engineering Drive 1, Singapore 117575.
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 8, 1E Kent Ridge Road, Singapore 119228.
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47
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Blazeski A, Kostecki GM, Tung L. Engineered heart slices for electrophysiological and contractile studies. Biomaterials 2015; 55:119-28. [PMID: 25934457 DOI: 10.1016/j.biomaterials.2015.03.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 03/09/2015] [Accepted: 03/15/2015] [Indexed: 11/18/2022]
Abstract
A major consideration in the design of engineered cardiac tissues for the faithful representation of physiological behavior is the recapitulation of the complex topography and biochemistry of native tissue. In this study we present engineered heart slices (EHS), which consist of neonatal rat ventricular cells (NRVCs) seeded onto thin slices of decellularized cardiac tissue that retain important aspects of native extracellular matrix (ECM). To form EHS, rat or pig ventricular tissue was sectioned into 300 μm-thick, 5 to 16 mm-diameter disks, which were subsequently decellularized using detergents, spread on coverslips, and seeded with NRVCs. The organized fiber structure of the ECM remained after decellularization and promoted cell elongation and alignment, resulting in an anisotropic, functional tissue that could be electrically paced. Contraction decreased at higher pacing rates, and optical mapping revealed electrical conduction that was anisotropic with a ratio of approximately 2.0, rate-dependent shortening of the action potential and slowing of conduction, and slowing of conduction by the sodium channel blocker lidocaine. Reentrant arrhythmias could also be pace-induced and terminated. EHS constitute an attractive in vitro cardiac tissue in which cardiac cells are cultured on thin slices of decellularized cardiac ECM that provide important biochemical, structural, and mechanical cues absent in traditional cell cultures.
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Affiliation(s)
- Adriana Blazeski
- Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, USA
| | - Geran M Kostecki
- Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, USA
| | - Leslie Tung
- Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, USA.
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Walsh L, Ryu J, Bock S, Koval M, Mauro T, Ross R, Desai T. Nanotopography facilitates in vivo transdermal delivery of high molecular weight therapeutics through an integrin-dependent mechanism. NANO LETTERS 2015; 15:2434-41. [PMID: 25790174 PMCID: PMC4478088 DOI: 10.1021/nl504829f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Transdermal delivery of therapeutics is restricted by narrow limitations on size and hydrophobicity. Nanotopography has been shown to significantly enhance high molecular weight paracellular transport in vitro. Herein, we demonstrate for the first time that nanotopography applied to microneedles significantly enhances transdermal delivery of etanercept, a 150 kD therapeutic, in both rats and rabbits. We further show that this effect is mediated by remodeling of the tight junction proteins initiated via integrin binding to the nanotopography, followed by phosphorylation of myosin light chain (MLC) and activation of the actomyosin complex, which in turn increase paracellular permeability.
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Affiliation(s)
- Laura Walsh
- Department of Bioengineering and Therapeutic Sciences, University of California-San Francisco, 1700 Fourth Street, Room 204, San Francisco, California 94158-2330, United States
| | - Jubin Ryu
- Department of Dermatology, University of California-San Francisco, 1701 Divisadero Street, San Francisco, California 94115, United States
| | - Suzanne Bock
- Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Michael Koval
- Division of Pulmonary, Allergy, and Critical Care Medicine and Department of Cell Biology, Emory University School of Medicine, 615 Michael Street, Suite 205, Atlanta, Georgia 30322, United States
| | - Theodora Mauro
- Department of Dermatology, University of California-San Francisco, 1701 Divisadero Street, San Francisco, California 94115, United States
- Department of Dermatology, San Francisco Veterans Affairs Hospital, 4150 Clement Street, San Francisco, California 94121, United States
| | - Russell Ross
- Kimberly-Clark Corporation, 8601 Dunwoody Place, Suite 580, Atlanta, Georgia 30350, United States
| | - Tejal Desai
- Department of Bioengineering and Therapeutic Sciences, University of California-San Francisco, 1700 Fourth Street, Room 204, San Francisco, California 94158-2330, United States
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Ankam S, Lim CK, Yim EK. Actomyosin contractility plays a role in MAP2 expression during nanotopography-directed neuronal differentiation of human embryonic stem cells. Biomaterials 2015; 47:20-8. [DOI: 10.1016/j.biomaterials.2015.01.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 12/31/2014] [Accepted: 01/12/2015] [Indexed: 01/10/2023]
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50
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D’Acunto M, Danti S, Salvetti O. Adhesion and Friction Contributions to Cell Motility. FUNDAMENTALS OF FRICTION AND WEAR ON THE NANOSCALE 2015. [DOI: 10.1007/978-3-319-10560-4_29] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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