1
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Zhang P, Zhu B, Du P, Travas-Sejdic J. Electrochemical and Electrical Biosensors for Wearable and Implantable Electronics Based on Conducting Polymers and Carbon-Based Materials. Chem Rev 2024; 124:722-767. [PMID: 38157565 DOI: 10.1021/acs.chemrev.3c00392] [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: 01/03/2024]
Abstract
Bioelectronic devices are designed to translate biological information into electrical signals and vice versa, thereby bridging the gap between the living biological world and electronic systems. Among different types of bioelectronics devices, wearable and implantable biosensors are particularly important as they offer access to the physiological and biochemical activities of tissues and organs, which is significant in diagnosing and researching various medical conditions. Organic conducting and semiconducting materials, including conducting polymers (CPs) and graphene and carbon nanotubes (CNTs), are some of the most promising candidates for wearable and implantable biosensors. Their unique electrical, electrochemical, and mechanical properties bring new possibilities to bioelectronics that could not be realized by utilizing metals- or silicon-based analogues. The use of organic- and carbon-based conductors in the development of wearable and implantable biosensors has emerged as a rapidly growing research field, with remarkable progress being made in recent years. The use of such materials addresses the issue of mismatched properties between biological tissues and electronic devices, as well as the improvement in the accuracy and fidelity of the transferred information. In this review, we highlight the most recent advances in this field and provide insights into organic and carbon-based (semi)conducting materials' properties and relate these to their applications in wearable/implantable biosensors. We also provide a perspective on the promising potential and exciting future developments of wearable/implantable biosensors.
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Affiliation(s)
- Peikai Zhang
- Centre for Innovative Materials for Health, School of Chemical Sciences, The University of Auckland, Auckland 1010, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6012, New Zealand
- Auckland Bioengineering Institute, The University of Auckland, Auckland 1010, New Zealand
| | - Bicheng Zhu
- Centre for Innovative Materials for Health, School of Chemical Sciences, The University of Auckland, Auckland 1010, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6012, New Zealand
| | - Peng Du
- Auckland Bioengineering Institute, The University of Auckland, Auckland 1010, New Zealand
| | - Jadranka Travas-Sejdic
- Centre for Innovative Materials for Health, School of Chemical Sciences, The University of Auckland, Auckland 1010, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6012, New Zealand
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2
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Park R, Kang MS, Heo G, Shin YC, Han DW, Hong SW. Regulated Behavior in Living Cells with Highly Aligned Configurations on Nanowrinkled Graphene Oxide Substrates: Deep Learning Based on Interplay of Cellular Contact Guidance. ACS NANO 2024; 18:1325-1344. [PMID: 38099607 DOI: 10.1021/acsnano.2c09815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
Micro-/nanotopographical cues have emerged as a practical and promising strategy for controlling cell fate and reprogramming, which play a key role as biophysical regulators in diverse cellular processes and behaviors. Extracellular biophysical factors can trigger intracellular physiological signaling via mechanotransduction and promote cellular responses such as cell adhesion, migration, proliferation, gene/protein expression, and differentiation. Here, we engineered a highly ordered nanowrinkled graphene oxide (GO) surface via the mechanical deformation of an ultrathin GO film on an elastomeric substrate to observe specific cellular responses based on surface-mediated topographical cues. The ultrathin GO film on the uniaxially prestrained elastomeric substrate through self-assembly and subsequent compressive force produced GO nanowrinkles with periodic amplitude. To examine the acute cellular behaviors on the GO-based cell interface with nanostructured arrays of wrinkles, we cultured L929 fibroblasts and HT22 hippocampal neuronal cells. As a result, our developed cell-culture substrate obviously provided a directional guidance effect. In addition, based on the observed results, we adapted a deep learning (DL)-based data processing technique to precisely interpret the cell behaviors on the nanowrinkled GO surfaces. According to the learning/transfer learning protocol of the DL network, we detected cell boundaries, elongation, and orientation and quantitatively evaluated cell velocity, traveling distance, displacement, and orientation. The presented experimental results have intriguing implications such that the nanotopographical microenvironment could engineer the living cells' morphological polarization to assemble them into useful tissue chips consisting of multiple cell types.
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Affiliation(s)
- Rowoon Park
- Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Moon Sung Kang
- Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Gyeonghwa Heo
- Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Yong Cheol Shin
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Ohio 44195, United States
| | - Dong-Wook Han
- Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Suck Won Hong
- Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, Republic of Korea
- Engineering Research Center for Color-Modulated Extra-Sensory Perception Technology, Pusan National University, Busan 46241, Republic of Korea
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3
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Venturino I, Vurro V, Bonfadini S, Moschetta M, Perotto S, Sesti V, Criante L, Bertarelli C, Lanzani G. Skeletal muscle cells opto-stimulation by intramembrane molecular transducers. Commun Biol 2023; 6:1148. [PMID: 37952040 PMCID: PMC10640616 DOI: 10.1038/s42003-023-05538-y] [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: 04/21/2023] [Accepted: 11/02/2023] [Indexed: 11/14/2023] Open
Abstract
Optical stimulation and control of muscle cell contraction opens up a number of interesting applications in hybrid robotic and medicine. Here we show that recently designed molecular phototransducer can be used to stimulate C2C12 skeletal muscle cells, properly grown to exhibit collective behaviour. C2C12 is a skeletal muscle cell line that does not require animal sacrifice Furthermore, it is an ideal cell model for evaluating the phototransducer pacing ability due to its negligible spontaneous activity. We study the stimulation process and analyse the distribution of responses in multinuclear cells, in particular looking at the consistency between stimulus and contraction. Contractions are detected by using an imaging software for object recognition. We find a deterministic response to light stimuli, yet with a certain distribution of erratic behaviour that is quantified and correlated to light intensity or stimulation frequency. Finally, we compare our optical stimulation with electrical stimulation showing advantages of the optical approach, like the reduced cell stress.
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Affiliation(s)
- Ilaria Venturino
- Dipartimento di Fisica, Politecnico di Milano, Milano, Italy
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Milano, Italy
| | - Vito Vurro
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Milano, Italy
| | - Silvio Bonfadini
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Milano, Italy
| | - Matteo Moschetta
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Milano, Italy
| | - Sara Perotto
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Milano, Italy
| | - Valentina Sesti
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Milano, Italy
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta" Politecnico di Milano, Milano, Italy
| | - Luigino Criante
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Milano, Italy
| | - Chiara Bertarelli
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Milano, Italy
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta" Politecnico di Milano, Milano, Italy
| | - Guglielmo Lanzani
- Dipartimento di Fisica, Politecnico di Milano, Milano, Italy.
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Milano, Italy.
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4
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Shih YF, Lin SH, Xu J, Su CJ, Huang CF, Hsu SH. Stretchable and biodegradable chitosan-polyurethane-cellulose nanofiber composites as anisotropic materials. Int J Biol Macromol 2023; 230:123116. [PMID: 36603720 DOI: 10.1016/j.ijbiomac.2022.123116] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/27/2022] [Accepted: 12/29/2022] [Indexed: 01/04/2023]
Abstract
Chitosan is a naturally derived biodegradable polymer with abundancy, sustainability, and ease of chemical modification. Polyurethanes are a family of elastic biocompatible polymers, and composites of polyurethanes have versatile properties and applications. Chitosan-polyurethane composites were recently developed but had insufficient strength and limited stretchability. In the current study, cellulose nanofibers (CNFs) were integrated in chitosan-polyurethane composites to prepare stretchable and anisotropic materials. A biodegradable polyurethane was first synthesized, end-capped with aldehyde to become dialdehyde polyurethane (DP) nanoparticles, and added with CNFs to prepare the DP-CNF composite crosslinker (DPF). The waterborne DPF crosslinker was then blended with chitosan solution to make polyurethane-CNF-chitosan (DPFC) composites. After blending, DPFC may form hydrogel in ~33 min at room temperature, which confirmed crosslinking. Composite films cast and dried from the blends showed good elongation (~420.2 %) at 60 °C. Anisotropic films were then generated by tension annealing with pre-strain. The annealed films with 200 % pre-strain exhibited large elastic anisotropy with ~4.9 anisotropic ratio. In situ SAXS/WAXS analyses unveiled that rearrangement and alignment of the microstructure during tension annealing accounted for the anisotropy. The anisotropic composite films had the ability to orient the growth of neural stem cells and showed the potential for biomimetic and tissue engineering applications.
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Affiliation(s)
- Yu-Feng Shih
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan, Republic of China
| | - Shih-Ho Lin
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan, Republic of China
| | - Junpeng Xu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan, Republic of China
| | - Chun-Jen Su
- National Synchrotron Radiation Research Center, Hsinchu Science Park, Hsinchu, Taiwan, Republic of China
| | - Chih-Feng Huang
- Department of Chemical Engineering, National Chung Hsing University, Taichung, Taiwan, Republic of China
| | - Shan-Hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan, Republic of China; Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan, Republic of China.
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5
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Paci C, Iberite F, Arrico L, Vannozzi L, Parlanti P, Gemmi M, Ricotti L. Piezoelectric nanocomposite bioink and ultrasound stimulation modulate early skeletal myogenesis. Biomater Sci 2022; 10:5265-5283. [PMID: 35913209 DOI: 10.1039/d1bm01853a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Despite the significant progress in bioprinting for skeletal muscle tissue engineering, new stimuli-responsive bioinks to boost the myogenesis process are highly desirable. In this work, we developed a printable alginate/Pluronic-based bioink including piezoelectric barium titanate nanoparticles (nominal diameter: ∼60 nm) for the 3D bioprinting of muscle cell-laden hydrogels. The aim was to investigate the effects of the combination of piezoelectric nanoparticles with ultrasound stimulation on early myogenic differentiation of the printed structures. After the characterization of nanoparticles and bioinks, viability tests were carried out to investigate three nanoparticle concentrations (100, 250, and 500 μg mL-1) within the printed structures. An excellent cytocompatibility was confirmed for nanoparticle concentrations up to 250 μg mL-1. TEM imaging demonstrated the internalization of BTNPs in intracellular vesicles. The combination of piezoelectric nanoparticles and ultrasound stimulation upregulated the expression of MYOD1, MYOG, and MYH2 and enhanced cell aggregation, which is a crucial step for myoblast fusion, and the presence of MYOG in the nuclei. These results suggest that the direct piezoelectric effect induced by ultrasound on the internalized piezoelectric nanoparticles boosts myogenesis in its early phases.
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Affiliation(s)
- Claudia Paci
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy. .,Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
| | - Federica Iberite
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy. .,Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
| | - Lorenzo Arrico
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy. .,Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
| | - Lorenzo Vannozzi
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy. .,Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
| | - Paola Parlanti
- Istituto Italiano di Tecnologia, Center for Materials Interfaces, Electron Crystallography, Viale Rinaldo Piaggio 34, 56025 Pontedera, Italy
| | - Mauro Gemmi
- Istituto Italiano di Tecnologia, Center for Materials Interfaces, Electron Crystallography, Viale Rinaldo Piaggio 34, 56025 Pontedera, Italy
| | - Leonardo Ricotti
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy. .,Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
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6
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Li W, Liu J, Chen L, Wei W, Qian K, Liu Y, Leng J. Application and Development of Shape Memory Micro/Nano Patterns. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2105958. [PMID: 35362270 DOI: 10.1002/smll.202105958] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/12/2021] [Indexed: 06/14/2023]
Abstract
Shape memory polymers (SMPs) are a class of smart materials that change shape when stimulated by environmental stimuli. Different from the shape memory effect at the macro level, the introduction of micro-patterning technology into SMPs strengthens the exploration of the shape memory effect at the micro/nano level. The emergence of shape memory micro/nano patterns provides a new direction for the future development of smart polymers, and their applications in the fields of biomedicine/textile/micro-optics/adhesives show huge potential. In this review, the authors introduce the types of shape memory micro/nano patterns, summarize the preparation methods, then explore the imminent and potential applications in various fields. In the end, their shortcomings and future development direction are also proposed.
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Affiliation(s)
- Wenbing Li
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Junhao Liu
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Lei Chen
- Department of Biomedical Engineering, College of Engineering, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
| | - Wanting Wei
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Kun Qian
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China
| | - Yanju Liu
- Department of Astronautical Science and Mechanics, Harbin Institute of Technology (HIT), Harbin, 150001, P. R. China
| | - Jinsong Leng
- Centre for Composite Materials and Structures, Harbin Institute of Technology (HIT), Harbin, 150080, P. R. China
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7
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Pitsalidis C, Pappa AM, Boys AJ, Fu Y, Moysidou CM, van Niekerk D, Saez J, Savva A, Iandolo D, Owens RM. Organic Bioelectronics for In Vitro Systems. Chem Rev 2021; 122:4700-4790. [PMID: 34910876 DOI: 10.1021/acs.chemrev.1c00539] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Bioelectronics have made strides in improving clinical diagnostics and precision medicine. The potential of bioelectronics for bidirectional interfacing with biology through continuous, label-free monitoring on one side and precise control of biological activity on the other has extended their application scope to in vitro systems. The advent of microfluidics and the considerable advances in reliability and complexity of in vitro models promise to eventually significantly reduce or replace animal studies, currently the gold standard in drug discovery and toxicology testing. Bioelectronics are anticipated to play a major role in this transition offering a much needed technology to push forward the drug discovery paradigm. Organic electronic materials, notably conjugated polymers, having demonstrated technological maturity in fields such as solar cells and light emitting diodes given their outstanding characteristics and versatility in processing, are the obvious route forward for bioelectronics due to their biomimetic nature, among other merits. This review highlights the advances in conjugated polymers for interfacing with biological tissue in vitro, aiming ultimately to develop next generation in vitro systems. We showcase in vitro interfacing across multiple length scales, involving biological models of varying complexity, from cell components to complex 3D cell cultures. The state of the art, the possibilities, and the challenges of conjugated polymers toward clinical translation of in vitro systems are also discussed throughout.
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Affiliation(s)
- Charalampos Pitsalidis
- Department of Physics, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi 127788, UAE.,Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Anna-Maria Pappa
- Department of Biomedical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi 127788, UAE
| | - Alexander J Boys
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Ying Fu
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K.,Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, Glasgow G1 1RD, U.K
| | - Chrysanthi-Maria Moysidou
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Douglas van Niekerk
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Janire Saez
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K.,Microfluidics Cluster UPV/EHU, BIOMICs Microfluidics Group, Lascaray Research Center, University of the Basque Country UPV/EHU, Avenida Miguel de Unamuno, 3, 01006 Vitoria-Gasteiz, Spain.,Ikerbasque, Basque Foundation for Science, E-48011 Bilbao, Spain
| | - Achilleas Savva
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Donata Iandolo
- INSERM, U1059 Sainbiose, Université Jean Monnet, Mines Saint-Étienne, Université de Lyon, 42023 Saint-Étienne, France
| | - Róisín M Owens
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
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8
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Khuu N, Kheiri S, Kumacheva E. Structurally anisotropic hydrogels for tissue engineering. TRENDS IN CHEMISTRY 2021. [DOI: 10.1016/j.trechm.2021.09.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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9
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Oyunbaatar NE, P Kanade P, Lee DW. Stress-assisted gold micro-wrinkles on a polymer cantilever for cardiac tissue engineering. Colloids Surf B Biointerfaces 2021; 209:112210. [PMID: 34798382 DOI: 10.1016/j.colsurfb.2021.112210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 10/25/2021] [Accepted: 11/06/2021] [Indexed: 01/14/2023]
Abstract
Surface topography of devices is crucial for cardiac tissue engineering. In this study, we fabricated a unique cantilever-based device, whose surface was structured with stress-assisted micro-wrinkles. The Au micro-wrinkle patterns on the cantilever surface helped the cardiomyocytes to grow similarly to those in the native cardiac tissues by aligning them and providing them a conductive surface, thereby enhancing the contractile properties of the cells. The patterned Au surface also enhanced the electrical conductivity during cell-to-cell interactions. Additionally, the expression levels of proteins related to intracellular adhesion and contraction significantly increased in the polymer cantilevers with metallic wrinkle patterns. The roles of the polymer cantilever in improving the electrical conductivity and force-sensing properties were confirmed. Thereafter, the cantilever's response to cardiotoxicity was evaluated by introducing drugs known to induce toxicity to cardiomyocytes. The proposed cantilever is a versatile device that may be used to screen drug-induced cardiotoxicity during drug development.
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Affiliation(s)
- Nomin-Erdene Oyunbaatar
- School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Pooja P Kanade
- School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Dong-Weon Lee
- School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea; Center for Next-Generation Sensor Research and Development, Chonnam National University, Gwangju 61186, Republic of Korea; Advanced Medical Device Research Center for Cardiovascular Disease, Chonnam National University, Gwangju 61186, Republic of Korea.
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10
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Liu W, Sun Q, Zheng ZL, Gao YT, Zhu GY, Wei Q, Xu JZ, Li ZM, Zhao CS. Topographic Cues Guiding Cell Polarization via Distinct Cellular Mechanosensing Pathways. SMALL 2021; 18:e2104328. [PMID: 34738726 DOI: 10.1002/smll.202104328] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/12/2021] [Indexed: 02/05/2023]
Abstract
Cell polarization exists in a variety of tissues to regulate cell behaviors and functions. Space constraint (spatially limiting cell extension) and adhesion induction (guiding adhesome growth) are two main ways to induce cell polarization according to the microenvironment topographies. However, the mechanism of cell polarization induced by these two ways and the downstream effects on cell functions are yet to be understood. Here, space constraint and adhesion induction guiding cell polarization are achieved by substrate groove arrays in micro and nano size, respectively. Although the morphology of polarized cells is similar on both structures, the signaling pathways to induce the cell polarization and the downstream functions are distinctly different. The adhesion induction (nano-groove) leads to the formation of focal adhesions and activates the RhoA/ROCK pathway to enhance the myosin-based intracellular force, while the space constraint (micro-groove) only activates the formation of pseudopodia. The enhanced intracellular force caused by adhesion induction inhibits the chromatin condensation, which promotes the osteogenic differentiation of stem cells. This study presents an overview of cell polarization and mechanosensing at biointerface to aid in the design of novel biomaterials.
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Affiliation(s)
- Wei Liu
- State Key Laboratory of Polymer Materials and Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Qian Sun
- State Key Laboratory of Polymer Materials and Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Zi-Li Zheng
- State Key Laboratory of Polymer Materials and Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Ya-Ting Gao
- State Key Laboratory of Polymer Materials and Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Guan-Yin Zhu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Qiang Wei
- State Key Laboratory of Polymer Materials and Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China.,College of Biomedical Engineering, Sichuan University, Chengdu, 610065, China
| | - Jia-Zhuang Xu
- State Key Laboratory of Polymer Materials and Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Zhong-Ming Li
- State Key Laboratory of Polymer Materials and Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Chang-Sheng Zhao
- State Key Laboratory of Polymer Materials and Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China.,College of Biomedical Engineering, Sichuan University, Chengdu, 610065, China
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11
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He W, Ye X, Cui T. Progress of shrink polymer micro- and nanomanufacturing. MICROSYSTEMS & NANOENGINEERING 2021; 7:88. [PMID: 34790360 PMCID: PMC8566528 DOI: 10.1038/s41378-021-00312-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/29/2021] [Accepted: 09/16/2021] [Indexed: 05/31/2023]
Abstract
Traditional lithography plays a significant role in the fabrication of micro- and nanostructures. Nevertheless, the fabrication process still suffers from the limitations of manufacturing devices with a high aspect ratio or three-dimensional structure. Recent findings have revealed that shrink polymers attain a certain potential in micro- and nanostructure manufacturing. This technique, denoted as heat-induced shrink lithography, exhibits inherent merits, including an improved fabrication resolution by shrinking, controllable shrinkage behavior, and surface wrinkles, and an efficient fabrication process. These merits unfold new avenues, compensating for the shortcomings of traditional technologies. Manufacturing using shrink polymers is investigated in regard to its mechanism and applications. This review classifies typical applications of shrink polymers in micro- and nanostructures into the size-contraction feature and surface wrinkles. Additionally, corresponding shrinkage mechanisms and models for shrinkage, and wrinkle parameter control are examined. Regarding the size-contraction feature, this paper summarizes the progress on high-aspect-ratio devices, microchannels, self-folding structures, optical antenna arrays, and nanowires. Regarding surface wrinkles, this paper evaluates the development of wearable sensors, electrochemical sensors, energy-conversion technology, cell-alignment structures, and antibacterial surfaces. Finally, the limitations and prospects of shrink lithography are analyzed.
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Affiliation(s)
- Wenzheng He
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing, 100084 China
| | - Xiongying Ye
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing, 100084 China
| | - Tianhong Cui
- Department of Mechanical Engineering, University of Minnesota, 111 Church Street S.E., Minneapolis, MN 55455 USA
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12
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Mariano A, Lubrano C, Bruno U, Ausilio C, Dinger NB, Santoro F. Advances in Cell-Conductive Polymer Biointerfaces and Role of the Plasma Membrane. Chem Rev 2021; 122:4552-4580. [PMID: 34582168 PMCID: PMC8874911 DOI: 10.1021/acs.chemrev.1c00363] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
![]()
The plasma membrane
(PM) is often described as a wall, a physical
barrier separating the cell cytoplasm from the extracellular matrix
(ECM). Yet, this wall is a highly dynamic structure that can stretch,
bend, and bud, allowing cells to respond and adapt to their surrounding
environment. Inspired by shapes and geometries found in the biological
world and exploiting the intrinsic properties of conductive polymers
(CPs), several biomimetic strategies based on substrate dimensionality
have been tailored in order to optimize the cell–chip coupling.
Furthermore, device biofunctionalization through the use of ECM proteins
or lipid bilayers have proven successful approaches to further maximize
interfacial interactions. As the bio-electronic field aims at narrowing
the gap between the electronic and the biological world, the possibility
of effectively disguising conductive materials to “trick”
cells to recognize artificial devices as part of their biological
environment is a promising approach on the road to the seamless platform
integration with cells.
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Affiliation(s)
- Anna Mariano
- Tissue Electronics, Istituto Italiano di Tecnologia, 80125 Naples, Italy
| | - Claudia Lubrano
- Tissue Electronics, Istituto Italiano di Tecnologia, 80125 Naples, Italy.,Dipartimento di Chimica, Materiali e Produzione Industriale, Università di Napoli Federico II, 80125 Naples, Italy
| | - Ugo Bruno
- Tissue Electronics, Istituto Italiano di Tecnologia, 80125 Naples, Italy.,Dipartimento di Chimica, Materiali e Produzione Industriale, Università di Napoli Federico II, 80125 Naples, Italy
| | - Chiara Ausilio
- Tissue Electronics, Istituto Italiano di Tecnologia, 80125 Naples, Italy
| | - Nikita Bhupesh Dinger
- Tissue Electronics, Istituto Italiano di Tecnologia, 80125 Naples, Italy.,Dipartimento di Chimica, Materiali e Produzione Industriale, Università di Napoli Federico II, 80125 Naples, Italy
| | - Francesca Santoro
- Tissue Electronics, Istituto Italiano di Tecnologia, 80125 Naples, Italy
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13
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Stimpson TC, Osorio DA, Cranston ED, Moran-Mirabal JM. Direct Comparison of Three Buckling-Based Methods to Measure the Elastic Modulus of Nanobiocomposite Thin Films. ACS APPLIED MATERIALS & INTERFACES 2021; 13:29187-29198. [PMID: 34110768 DOI: 10.1021/acsami.1c08056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
To engineer tunable thin-film materials, the accurate measurement of their mechanical properties is crucial. However, characterizing the elastic modulus with current methods is particularly challenging for sub-micrometer thick films and hygroscopic materials because they are highly sensitive to environmental conditions and most methods require free-standing films which are difficult to prepare. In this work, we directly compared three buckling-based methods to determine the elastic moduli of supported thin films: (1) biaxial thermal shrinking, (2) uniaxial thermal shrinking, and (3) the mechanically compressed, strain-induced elastic buckling instability for mechanical measurements (SIEBIMM) method. Nanobiocomposite model films composed of cellulose nanocrystals (CNCs) and polyethyleneimine (PEI) were assembled using layer-by-layer deposition to control composition and thickness. The three buckling-based methods yielded the same trends and comparable values for the elastic moduli of each CNC-PEI film composition (ranging from 15 to 44 GPa, depending on film composition). This suggests that the methods are similarly effective for the quantification of thin-film mechanical properties. Increasing the CNC content in the films statistically increased the modulus; however, increasing the PEI content did not lead to significant changes. For the CNC-PEI system, the standard deviation of elastic moduli determined from SIEBIMM was 2-4 times larger than that for thermal shrinking, likely due to extensive cracking due to the different stress applied to the film when subjected to compression of a relaxed substrate versus the shrinking of a pre-strained substrate. These results show that biaxial thermal shrinking is a reliable method for the determination of the mechanical properties of thin films with a simple implementation and analysis and low sensitivity to small deviations in the input parameter values, such as film thickness or substrate modulus.
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Affiliation(s)
- Taylor C Stimpson
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Daniel A Osorio
- Department of Chemical and Biological Engineering, The University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Emily D Cranston
- Department of Chemical and Biological Engineering, The University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z3, Canada
- Department of Wood Science, The University of British Columbia, 2424 Main Mall, Vancouver, British Columbia V6T 1Z4, Canada
| | - Jose M Moran-Mirabal
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
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14
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Shi H, Wang C, Ma Z. Stimuli-responsive biomaterials for cardiac tissue engineering and dynamic mechanobiology. APL Bioeng 2021; 5:011506. [PMID: 33688616 PMCID: PMC7929620 DOI: 10.1063/5.0025378] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 01/27/2021] [Indexed: 12/24/2022] Open
Abstract
Since the term "smart materials" was put forward in the 1980s, stimuli-responsive biomaterials have been used as powerful tools in tissue engineering, mechanobiology, and clinical applications. For the purpose of myocardial repair and regeneration, stimuli-responsive biomaterials are employed to fabricate hydrogels and nanoparticles for targeted delivery of therapeutic drugs and cells, which have been proved to alleviate disease progression and enhance tissue regeneration. By reproducing the sophisticated and dynamic microenvironment of the native heart, stimuli-responsive biomaterials have also been used to engineer dynamic culture systems to understand how cardiac cells and tissues respond to progressive changes in extracellular microenvironments, enabling the investigation of dynamic cell mechanobiology. Here, we provide an overview of stimuli-responsive biomaterials used in cardiovascular research applications, with a specific focus on cardiac tissue engineering and dynamic cell mechanobiology. We also discuss how these smart materials can be utilized to mimic the dynamic microenvironment during heart development, which might provide an opportunity to reveal the fundamental mechanisms of cardiomyogenesis and cardiac maturation.
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Affiliation(s)
| | | | - Zhen Ma
- Author to whom correspondence should be addressed:
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15
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Zhu J, Omura T, Wakisaka M. Biological response of protists Haematococcus lacustris and Euglena gracilis to conductive polymer poly (3,4-ethylenedioxythiophene) polystyrene sulfonate. Lett Appl Microbiol 2021; 72:619-625. [PMID: 33566365 DOI: 10.1111/lam.13459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 12/02/2020] [Accepted: 02/05/2021] [Indexed: 01/21/2023]
Abstract
Improving the growth and pigment accumulation of microalgae by electrochemical approaches was considered a novel and promising method. In this research, we investigated the effect of conductive polymer poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) dispersible in water on growth and pigment accumulation of Haematococcus lacustris and Euglena gracilis. The results revealed that effect of PEDOT:PSS was strongly cell-dependent and each cell type has its own peculiar response. For H. lacustris, the cell density in the 50 mg·l-1 treatment group increased by 50·27%, and the astaxanthin yield in the 10 mg·l-1 treatment group increased by 37·08%. However, under the high concentrations of PEDOT:PSS treatment, cell growth was significantly inhibited, and meanwhile, the smaller and more active zoospores were observed, which reflected the changes in cell life cycle and growth mode. Cell growth of E. gracilis in all the PEDOT:PSS treatment groups were notably inhibited. Chlorophyll a content in E. gracilis decreased while chlorophyll b content increased in response to the PEDOT:PSS treatment. The results laid a foundation for further development of electrochemical methods to promote microalgae growth and explore the interactions between conductive polymers and microalgae cells.
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Affiliation(s)
- J Zhu
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka, Japan
| | - T Omura
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - M Wakisaka
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka, Japan
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16
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Ferrari LM, Rodríguez-Meana B, Bonisoli A, Cutrone A, Micera S, Navarro X, Greco F, Del Valle J. All-Polymer Printed Low-Cost Regenerative Nerve Cuff Electrodes. Front Bioeng Biotechnol 2021; 9:615218. [PMID: 33644015 PMCID: PMC7902501 DOI: 10.3389/fbioe.2021.615218] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 01/11/2021] [Indexed: 11/13/2022] Open
Abstract
Neural regeneration after lesions is still limited by several factors and new technologies are developed to address this issue. Here, we present and test in animal models a new regenerative nerve cuff electrode (RnCE). It is based on a novel low-cost fabrication strategy, called "Print and Shrink", which combines the inkjet printing of a conducting polymer with a heat-shrinkable polymer substrate for the development of a bioelectronic interface. This method allows to produce miniaturized regenerative cuff electrodes without the use of cleanroom facilities and vacuum based deposition methods, thus highly reducing the production costs. To fully proof the electrodes performance in vivo we assessed functional recovery and adequacy to support axonal regeneration after section of rat sciatic nerves and repair with RnCE. We investigated the possibility to stimulate the nerve to activate different muscles, both in acute and chronic scenarios. Three months after implantation, RnCEs were able to stimulate regenerated motor axons and induce a muscular response. The capability to produce fully-transparent nerve interfaces provided with polymeric microelectrodes through a cost-effective manufacturing process is an unexplored approach in neuroprosthesis field. Our findings pave the way to the development of new and more usable technologies for nerve regeneration and neuromodulation.
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Affiliation(s)
- Laura M Ferrari
- Center for Micro-BioRobotics @SSSA, Istituto Italiano di Tecnologia, Pontedera, Italy.,The BioRobotics Institute and Department of Excellence in Robotics and AI, Scuola Superiore Sant'Anna, Pontedera, Italy.,Université Côte d'Azur, INRIA, Sophia Antipolis, France
| | - Bruno Rodríguez-Meana
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, Universitat Autònoma de Barcelona, and CIBERNED, Bellaterra, Spain
| | - Alberto Bonisoli
- Center for Micro-BioRobotics @SSSA, Istituto Italiano di Tecnologia, Pontedera, Italy.,The BioRobotics Institute and Department of Excellence in Robotics and AI, Scuola Superiore Sant'Anna, Pontedera, Italy
| | - Annarita Cutrone
- The BioRobotics Institute and Department of Excellence in Robotics and AI, Scuola Superiore Sant'Anna, Pontedera, Italy
| | - Silvestro Micera
- The BioRobotics Institute and Department of Excellence in Robotics and AI, Scuola Superiore Sant'Anna, Pontedera, Italy.,Bertarelli Foundation Chair in Translational NeuroEngineering, Center for Neuroprosthetics and Institute of Bioengineering, Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland
| | - Xavier Navarro
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, Universitat Autònoma de Barcelona, and CIBERNED, Bellaterra, Spain
| | - Francesco Greco
- Center for Micro-BioRobotics @SSSA, Istituto Italiano di Tecnologia, Pontedera, Italy.,Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Graz, Austria.,Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Jaume Del Valle
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, Universitat Autònoma de Barcelona, and CIBERNED, Bellaterra, Spain
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17
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Ma SJ, Ford EM, Sawicki LA, Sutherland BP, Halaszynski NI, Carberry BJ, Wagner NJ, Kloxin AM, Kloxin CJ. Surface Chemical Functionalization of Wrinkled Thiol-ene Elastomers for Promoting Cellular Alignment. ACS APPLIED BIO MATERIALS 2020; 3:3731-3740. [PMID: 34322660 PMCID: PMC8315696 DOI: 10.1021/acsabm.0c00346] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Wrinkled polymer surfaces find broad applicability; however, the polymer substrates are often limited to poly(dimethylsiloxane) (PDMS), which limits spatial control over wrinkle features and surface chemistry. An approach to surface functionalization of wrinkled elastomer substrates is demonstrated through versatile, multistep thiol-ene click chemistry. The elastomer is formed using a thiol-Michael reaction of tetrathiol with excess diacrylates while wrinkle formation is induced through a second free radical UV polymerization of the acrylates on the surface of the elastomer. Due to oxygen inhibition of the free radical polymerization, pendant acrylates at the surface remain unreacted and are subsequently functionalized with a multi-functional thiol, which can be further reacted through a number of thiol-X 'click' reactions. As a demonstration, these thiol surfaces are further modified to either promote cell adhesion of human mesenchymal stem cells (hMSCs) through coupling with RGDS-containing peptides or surface passivation through reaction with hydrophilic hydroxyl ethyl acrylate moieties. Through engineering a combination of surface chemistry and surface topography, hMSCs exhibited increased spreading and cell density on RGDS-functionalized surfaces and a two-fold increase in cell alignment when cultured on wrinkled substrates. Gradient functionalized surfaces created by tuning the wrinkle wavelength with UV irradiation enabled rapid screening of the effect of topography on the hMSCs. Further, this novel application of click chemistry enables simultaneous tuning of wrinkle topology and surface chemistry towards targeted material applications.
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Affiliation(s)
- Stephen J. Ma
- Department of Chemical and Biomolecular Engineering, 150 Academy Street, Newark, DE 19716
| | - Eden M. Ford
- Department of Chemical and Biomolecular Engineering, 150 Academy Street, Newark, DE 19716
| | - Lisa A. Sawicki
- Department of Chemical and Biomolecular Engineering, 150 Academy Street, Newark, DE 19716
| | - Bryan P. Sutherland
- Department of Materials Science and Engineering, 201 DuPont Hall, Newark, DE 19716
| | | | - Benjamin J. Carberry
- Department of Chemical and Biomolecular Engineering, 150 Academy Street, Newark, DE 19716
| | - Norman J. Wagner
- Department of Chemical and Biomolecular Engineering, 150 Academy Street, Newark, DE 19716
- Center for Molecular and Engineering Thermodynamics, 150 Academy Street, Newark, DE 19716
| | - April M. Kloxin
- Department of Chemical and Biomolecular Engineering, 150 Academy Street, Newark, DE 19716
- Department of Materials Science and Engineering, 201 DuPont Hall, Newark, DE 19716
| | - Christopher J. Kloxin
- Department of Chemical and Biomolecular Engineering, 150 Academy Street, Newark, DE 19716
- Department of Materials Science and Engineering, 201 DuPont Hall, Newark, DE 19716
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18
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Vannozzi L, Mazzocchi T, Hasebe A, Takeoka S, Fujie T, Ricotti L. A Coupled FEM‐SPH Modeling Technique to Investigate the Contractility of Biohybrid Thin Films. ACTA ACUST UNITED AC 2020; 4:e1900306. [DOI: 10.1002/adbi.201900306] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 05/17/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Lorenzo Vannozzi
- Dr. L. Vannozzi, T. Mazzocchi, Prof. L. Ricotti The BioRobotics Institute Scuola Superiore Sant’Anna Piazza Martiri della Liberta’ 33 Pisa 56127 Italy
- Dr. L. Vannozzi, T. Mazzocchi, Prof. L. Ricotti Department of Excellence in Robotics & AI Scuola Superiore Sant’Anna Piazza Martiri della Liberta’ 33 Pisa 56127 Italy
| | - Tommaso Mazzocchi
- Dr. L. Vannozzi, T. Mazzocchi, Prof. L. Ricotti The BioRobotics Institute Scuola Superiore Sant’Anna Piazza Martiri della Liberta’ 33 Pisa 56127 Italy
- Dr. L. Vannozzi, T. Mazzocchi, Prof. L. Ricotti Department of Excellence in Robotics & AI Scuola Superiore Sant’Anna Piazza Martiri della Liberta’ 33 Pisa 56127 Italy
| | - Arihiro Hasebe
- A. Hasebe, Prof. S. Takeoka Department of Life Science and Medical Bioscience Graduate School of Advanced Science and Engineering Waseda University TWIns, 2‐2 Wakamtsu‐cho, Shinjuku‐ku Tokyo 162‐8480 Japan
| | - Shinji Takeoka
- A. Hasebe, Prof. S. Takeoka Department of Life Science and Medical Bioscience Graduate School of Advanced Science and Engineering Waseda University TWIns, 2‐2 Wakamtsu‐cho, Shinjuku‐ku Tokyo 162‐8480 Japan
| | - Toshinori Fujie
- Prof. T. Fujie School of Life Science and Technology Tokyo Institute of Technology B‐50, 4259 Nagatsuta‐cho, Midori‐ku Yokohama 226‐8501 Japan
- Prof. T. Fujie Research Organization for Nano & Life Innovation Waseda University 513 Wasedatsurumaki‐cho, Shinjuku‐ku Tokyo 162‐0041 Japan
| | - Leonardo Ricotti
- Dr. L. Vannozzi, T. Mazzocchi, Prof. L. Ricotti The BioRobotics Institute Scuola Superiore Sant’Anna Piazza Martiri della Liberta’ 33 Pisa 56127 Italy
- Dr. L. Vannozzi, T. Mazzocchi, Prof. L. Ricotti Department of Excellence in Robotics & AI Scuola Superiore Sant’Anna Piazza Martiri della Liberta’ 33 Pisa 56127 Italy
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19
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Vannozzi L, Gouveia P, Pingue P, Canale C, Ricotti L. Novel Ultrathin Films Based on a Blend of PEG- b-PCL and PLLA and Doped with ZnO Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2020; 12:21398-21410. [PMID: 32302103 DOI: 10.1021/acsami.0c00154] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
In this paper, a novel nanofilm type is proposed based on a blend of poly(ethylene glycol)-block-poly(ε-caprolactone) methyl ether (PEG-b-PCL) and poly(l-lactic acid), doped with zinc oxide nanoparticles (ZnO NPs) at different concentrations (0.1, 1, and 10 mg/mL). All nanofilm types were featured by a thickness value of ∼500 nm. Increasing ZnO NP concentrations implied larger roughness values (∼22 nm for the bare nanofilm and ∼67 nm for the films with 10 mg/mL of NPs), larger piezoelectricity (average d33 coefficient for the film up to ∼1.98 pm/V), and elastic modulus: the nanofilms doped with 1 and 10 mg/mL of NPs were much stiffer than the nondoped controls and nanofilms doped with 0.1 mg/mL of NPs. The ZnO NP content was also directly proportional to the material melting point and crystallinity and inversely proportional to the material degradation rate, thus highlighting the stabilization role of ZnO particles. In vitro tests were carried out with cells of the musculoskeletal apparatus (fibroblasts, osteoblasts, chondrocytes, and myoblasts). All cell types showed good adhesion and viability on all substrate formulations. Interestingly, a higher content of ZnO NPs in the matrix demonstrated higher bioactivity, boosting the metabolic activity of fibroblasts, myoblasts, and chondrocytes and enhancing the osteogenic and myogenic differentiation. These findings demonstrated the potential of these nanocomposite matrices for regenerative medicine applications, such as tissue engineering.
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Affiliation(s)
- Lorenzo Vannozzi
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertá 33, 56127 Pisa, Italy
- Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Liberta 33, 56127 Pisa, Italy
| | - Pedro Gouveia
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertá 33, 56127 Pisa, Italy
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin D02 YN77, Ireland
| | - Pasqualantonio Pingue
- NEST, Scuola Normale Superiore and CNR Istituto Nanoscienze, Piazza San Silvestro 12, 56127 Pisa (PI), Italy
| | - Claudio Canale
- Department of Physics, University of Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - Leonardo Ricotti
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertá 33, 56127 Pisa, Italy
- Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Liberta 33, 56127 Pisa, Italy
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20
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Nguyen DHK, Bazaka O, Bazaka K, Crawford RJ, Ivanova EP. Three-Dimensional Hierarchical Wrinkles on Polymer Films: From Chaotic to Ordered Antimicrobial Topographies. Trends Biotechnol 2020; 38:558-571. [PMID: 32302580 DOI: 10.1016/j.tibtech.2019.12.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 11/22/2019] [Accepted: 12/06/2019] [Indexed: 12/11/2022]
Abstract
Microbial contamination of polymer surfaces has become a significant challenge in domestic, industrial, and biomedical applications. Recent progress in our understanding of how topographical features of different length scales can be used to effectively and selectively control the attachment and proliferation of different cell types has provided an alternative strategy for imparting antibacterial activity to these surfaces. Among the well-recognized engineered models of antibacterial surface topographies, self-organized wrinkles have shown particular promise with respect to their antimicrobial characteristics. Here, we critically review the mechanisms by which wrinkles form on the surface of different types of polymer material and how they interact with various biomolecules and cell types. We also discuss the feasibility of using this antimicrobial strategy in real-life biomedical applications.
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Affiliation(s)
- Duy H K Nguyen
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne 3000, VIC, Australia
| | - Olha Bazaka
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne 3000, VIC, Australia
| | - Kateryna Bazaka
- Research School of Electrical Energy and Materials Engineering, College of Engineering and Computer Science, The Australian National University, Canberra ACT 2600, Australia
| | - Russell J Crawford
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne 3000, VIC, Australia
| | - Elena P Ivanova
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne 3000, VIC, Australia.
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21
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Mao M, He J, Li Z, Han K, Li D. Multi-directional cellular alignment in 3D guided by electrohydrodynamically-printed microlattices. Acta Biomater 2020; 101:141-151. [PMID: 31669696 DOI: 10.1016/j.actbio.2019.10.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 10/20/2019] [Accepted: 10/22/2019] [Indexed: 01/30/2023]
Abstract
Recapitulating aligned cellular architectures of native tissues in vitro is important to engineer artificial tissue analogs with desired biological functions. Here a novel strategy is presented to direct three-dimensional (3D) cellular alignment by embedding cell/collagen hydrogel into the predefined electrohydrodynamically-printed microlattices. The cell/collagen hydrogel, originally filled within the printed microlattices uniformly, was found to gradually develop into densely-populated and highly-aligned bands along the longitudinal direction of the printed microlattices. The cellular alignment was highly dependent on the height, spacing and orientation of the microlattices. The presented method was applicable to multiple cell types including primary cardiomyocytes and the gaps formed between the aligned bands and the lateral walls of the microlattice facilitated the subsequent seeding and rapid alignment of other cell types which enables to engineer anisotropic multicellular tissue constructs. The engineered cardiac patches expressed mature cardiomyocyte-specific phenotypes and exhibited synchronous contractive activities. Multilayer cellular alignment with varied orientation in 3D collagen hydrogel was successfully achieved by using electrohydrodynamically-printed microlattices with layer-specific orientations. This exploration offers a promising way to engineer complex 3D tissue constructs with predefined cellular alignments. STATEMENT OF SIGNIFICANCE: Fabrication of biomimetic highly-aligned complex cellular architectures has a great significance to recapitulate the unique mechanical and physiological functions of the engineered tissues (e.g., heart tissue, neuron, muscle). Here, we introduced a novel strategy to direct 3D cellular alignment by embedding cell/collagen hydrogel into the predefined electrohydrodynamically-printed microlattices without any external stimuli. The microscopical study of the dynamic alignment process of cells and collagen fibers contributed to exploring the mechanism of autonomous formation of highly-aligned cellular bands. Multilayer cellular alignment with varied orientation in 3D collagen hydrogel was successfully achieved by using the microlattices with layer-specific orientations, which showed a promising way to engineer complex 3D tissue constructs with predefined cellular alignments.
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22
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Seo Y, Jeong S, Chung JJ, Kim SH, Choi N, Jung Y. Development of an Anisotropically Organized Brain dECM Hydrogel-Based 3D Neuronal Culture Platform for Recapitulating the Brain Microenvironment in Vivo. ACS Biomater Sci Eng 2019; 6:610-620. [PMID: 33463191 DOI: 10.1021/acsbiomaterials.9b01512] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
To mimic the brain tissue microenvironment in vitro, the biological and structural properties of the utilized system must be similar to those of the native brain in the microenvironment in vivo. To promote the bioactive (biological) properties of matrix hydrogels, we used the decellularized extracellular matrix (dECM) of porcine brain, which was found to enhance neuronal differentiation/outgrowth and neuron-to-brain dECM interactions. To implement the desired structural properties, we aligned microfibrils within a composite hydrogel mixed with the brain dECM and collagen I, with or without encapsulated neurons, by the stretching and releasing of a hydrogel-based chip. We then tested the ability of the aligned brain dECM hydrogel-based three-dimensional (3D) culture platform to mimic the in vivo brain microenvironment. We found that dECM-containing gels harbored brain-derived ECM proteins, including collagen I, collagen IV, laminin, and various cytokines, and that neurons incubated in these gels exhibited enhanced neurite outgrowth and development compared to those incubated in collagen gel (dECM 0 mg/mL). We evaluated the surface morphology and mechanical properties of the hydrogel with and without the brain dECM and found that their encapsulated neurons showed similar levels of cell viability. We then used a mechanical process to align the composite dECM hydrogel, conferring the desired structural properties to our system. Together, our results suggest that our newly developed brain dECM-based 3D culture platform could potentially be further developed for use in drug screening.
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Affiliation(s)
- Yoojin Seo
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea
| | - Sohyeon Jeong
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology (UST), Seoul 02792, Republic of Korea
| | | | - Soo Hyun Kim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea
| | - Nakwon Choi
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea.,Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology (UST), Seoul 02792, Republic of Korea
| | - Youngmee Jung
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea.,Yonsei-KIST Convergence Research Institute, Seoul 03722, Republic of Korea
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23
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Gong HY, Park J, Kim W, Kim J, Lee JY, Koh WG. A Novel Conductive and Micropatterned PEG-Based Hydrogel Enabling the Topographical and Electrical Stimulation of Myoblasts. ACS APPLIED MATERIALS & INTERFACES 2019; 11:47695-47706. [PMID: 31794187 DOI: 10.1021/acsami.9b16005] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In this study, we designed a cell-adhesive poly(ethylene glycol) (PEG)-based hydrogel that simultaneously provides topographical and electrical stimuli to C2C12 myoblasts. Specifically, PEG hydrogels with microgroove structures of 3 μm ridges and 3 μm grooves were prepared by micromolding; in situ polymerization of poly(3,4-ethylenedioxythiophene) (PEDOT) was then performed within the micropatterned PEG hydrogels to create a microgrooved conductive hydrogel (CH/P). The CH/P had clear replica patterns of the silicone mold and a conductivity of 2.49 × 10-3 S/cm, with greater than 85% water content. In addition, the CH exhibited Young's modulus (45.84 ± 7.12 kPa) similar to that of a muscle tissue. The surface of the CH/P was further modified via covalent bonding with cell-adhesive peptides to facilitate cell adhesion without affecting conductivity. An in vitro cell assay revealed that the CH/P was cytocompatible and enhanced the cell alignment and elongation of C2C12 myoblasts. The microgrooves and conductivity of the CH/P had the greatest positive effect on the myogenesis of C2C12 myoblasts compared to the other PEG hydrogel samples without conductivity or/and microgrooves, even in the absence of electrical stimulation. Electrical stimulation studies indicated that the combination of topographical and electrical cues maximized the differentiation of C2C12 myoblasts into myotubes, confirming the synergetic effect of incorporating microgroove surface features and a conductive PEDOT component into hydrogels.
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Affiliation(s)
| | - Junggeon Park
- School of Materials Science and Engineering , Gwangju Institute of Science and Technology (GIST) , Gwangju 61105 , South Korea
| | | | | | - Jae Young Lee
- School of Materials Science and Engineering , Gwangju Institute of Science and Technology (GIST) , Gwangju 61105 , South Korea
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24
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Garma LD, Ferrari LM, Scognamiglio P, Greco F, Santoro F. Inkjet-printed PEDOT:PSS multi-electrode arrays for low-cost in vitro electrophysiology. LAB ON A CHIP 2019; 19:3776-3786. [PMID: 31616896 DOI: 10.1039/c9lc00636b] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Multi-electrode arrays (MEAs) have become a key element in the study of cellular phenomena in vitro. Common modern MEAs are still based on costly microfabrication techniques, making them expensive tools that researchers are pushed to reuse, compromising the reproducibility and the quality of the acquired data. There is a need to develop novel fabrication strategies, able to produce disposable devices that incorporate advanced technologies beyond the standard metal electrodes on rigid substrates. Here we present an innovative fabrication process for the production of polymer-based flexible MEAs. The device fabrication exploited inkjet printing, as this low-cost manufacturing method allows for an easy and reliable patterning of conducting polymers. Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) was used as the sole conductive element of the MEAs. The physical structure and the electrical properties of the plastic/printed MEAs (pMEAs) were characterised, showing a low impedance that is maintained also in the long term. The biocompatibility of the devices was demonstrated, and their capability to successfully establish a tight coupling with cells was proved. Furthermore, the pMEAs were used to monitor the extracellular potentials from cardiac cell cultures and to record high quality electrophysiological signals from them. Our results validate the use of pMEAs as in vitro electrophysiology platforms, pushing for the adoption of innovative fabrication techniques and the use of new materials for the production of MEAs.
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Affiliation(s)
- Leonardo D Garma
- Tissue Electronics, Center for Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, Naples, Italy.
| | - Laura M Ferrari
- Center for Micro-BioRobotics@SSSA, Istituto Italiano di Tecnologia, Pontedera, Italy.
| | - Paola Scognamiglio
- Tissue Electronics, Center for Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, Naples, Italy.
| | - Francesco Greco
- Center for Micro-BioRobotics@SSSA, Istituto Italiano di Tecnologia, Pontedera, Italy. and Institute of Solid State Physics, Graz University of Technology, Austria.
| | - Francesca Santoro
- Tissue Electronics, Center for Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, Naples, Italy.
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25
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Lee H, Kim W, Lee J, Yoo JJ, Kim GH, Lee SJ. Effect of Hierarchical Scaffold Consisting of Aligned dECM Nanofibers and Poly(lactide- co-glycolide) Struts on the Orientation and Maturation of Human Muscle Progenitor Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:39449-39458. [PMID: 31584255 DOI: 10.1021/acsami.9b12639] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Extracellular matrices (ECMs) derived from tissues and decellularized are widely used as biomaterials in tissue engineering applications because they encompass tissue-specific biological and physical cues. In this study, we utilized a solubilized decellularized tissue (dECM) obtained from skeletal muscle to fabricate a nanofibrous structure using the electrospinning technique. The dECM was chemically modified by methacrylate reaction (dECM-MA) to improve the structural stability before electrospinning. The electrospun dECM-MA nanofibers were combined with microscale fibrillated poly(lactide-co-glycolide) (PLGA) constructs fabricated by three-dimensional printing and fibrillation/leaching of poly(vinyl alcohol) to promote skeletal muscle cell orientation and maturation. Using the electrostatic force-assisted fiber-alignment method, a multiscale composite scaffold consisting of fibrillated PLGA and aligned dECM-MA nanofibers was fabricated. The multiscale dECM-MA/PLGA composite scaffold significantly promoted the cellular orientation and myotube formation of human muscle progenitor cells compared to control scaffolds. The results suggested the potential use of the multiscale dECM-MA/PLGA composite scaffold, which contains the biochemical and topographical cues, for bioengineering a skeletal muscle tissue construct.
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Affiliation(s)
- Hyeongjin Lee
- Wake Forest Institute for Regenerative Medicine , Wake Forest School of Medicine , Medical Center Boulevard , Winston-Salem , North Carolina 27157 , United States
| | - WonJin Kim
- Wake Forest Institute for Regenerative Medicine , Wake Forest School of Medicine , Medical Center Boulevard , Winston-Salem , North Carolina 27157 , United States
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
| | - JiUn Lee
- Wake Forest Institute for Regenerative Medicine , Wake Forest School of Medicine , Medical Center Boulevard , Winston-Salem , North Carolina 27157 , United States
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
| | - James J Yoo
- Wake Forest Institute for Regenerative Medicine , Wake Forest School of Medicine , Medical Center Boulevard , Winston-Salem , North Carolina 27157 , United States
| | - Geun Hyung Kim
- Wake Forest Institute for Regenerative Medicine , Wake Forest School of Medicine , Medical Center Boulevard , Winston-Salem , North Carolina 27157 , United States
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
| | - Sang Jin Lee
- Wake Forest Institute for Regenerative Medicine , Wake Forest School of Medicine , Medical Center Boulevard , Winston-Salem , North Carolina 27157 , United States
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26
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Hu X, Dou Y, Li J, Liu Z. Buckled Structures: Fabrication and Applications in Wearable Electronics. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1804805. [PMID: 30740901 DOI: 10.1002/smll.201804805] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 12/22/2018] [Indexed: 05/21/2023]
Abstract
Wearable electronics have attracted a tremendous amount of attention due to their many potential applications, such as personalized health monitoring, motion detection, and smart clothing, where electronic devices must conformably form contacts with curvilinear surfaces and undergo large deformations. Structural design and material selection have been the key factors for the development of wearable electronics in the recent decades. As one of the most widely used geometries, buckling structures endow high stretchability, high mechanical durability, and comfortable contact for human-machine interaction via wearable devices. In addition, buckling structures that are derived from natural biosurfaces have high potential for use in cost-effective and high-grade wearable electronics. This review provides fundamental insights into buckling fabrication and discusses recent advancements for practical applications of buckled electronics, such as interconnects, sensors, transistors, energy storage, and conversion devices. In addition to the incorporation of desired functions, the simple and consecutive manipulation and advanced structural design of the buckled structures are discussed, which are important for advancing the field of wearable electronics. The remaining challenges and future perspectives for buckled electronics are briefly discussed in the final section.
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Affiliation(s)
- Xiaoyu Hu
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Pharmacy, Nankai University, Tianjin, 300071, China
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai, 201620, China
| | - Yuanyuan Dou
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Pharmacy, Nankai University, Tianjin, 300071, China
| | - Jingjing Li
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Pharmacy, Nankai University, Tianjin, 300071, China
| | - Zunfeng Liu
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Pharmacy, Nankai University, Tianjin, 300071, China
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27
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Matsuno H, Totani M, Yamamoto A, Haraguchi M, Ozawa M, Tanaka K. Water-induced surface reorganization of bioscaffolds composed of an amphiphilic hyperbranched polymer. Polym J 2019. [DOI: 10.1038/s41428-019-0212-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Golchin A, Hosseinzadeh S, Staji M, Soleimani M, Ardeshirylajimi A, Khojasteh A. Biological behavior of the curcumin incorporated chitosan/poly(vinyl alcohol) nanofibers for biomedical applications. J Cell Biochem 2019; 120:15410-15421. [DOI: 10.1002/jcb.28808] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/02/2019] [Accepted: 02/14/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Ali Golchin
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Simzar Hosseinzadeh
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Masumeh Staji
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Masoud Soleimani
- Department of Hematology, School of Medical Sciences Tarbiat Modares University Tehran Iran
| | - Abdolreza Ardeshirylajimi
- Medical Nanotechnology and Tissue Engineering Research Center Shahid Beheshti University of Medical Sciences Tehran Iran
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Arash Khojasteh
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
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29
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Zeglio E, Rutz AL, Winkler TE, Malliaras GG, Herland A. Conjugated Polymers for Assessing and Controlling Biological Functions. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1806712. [PMID: 30861237 DOI: 10.1002/adma.201806712] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 01/15/2019] [Indexed: 05/20/2023]
Abstract
The field of organic bioelectronics is advancing rapidly in the development of materials and devices to precisely monitor and control biological signals. Electronics and biology can interact on multiple levels: organs, complex tissues, cells, cell membranes, proteins, and even small molecules. Compared to traditional electronic materials such as metals and inorganic semiconductors, conjugated polymers (CPs) have several key advantages for biological interactions: tunable physiochemical properties, adjustable form factors, and mixed conductivity (ionic and electronic). Herein, the use of CPs in five biologically oriented research topics, electrophysiology, tissue engineering, drug release, biosensing, and molecular bioelectronics, is discussed. In electrophysiology, implantable devices with CP coating or CP-only electrodes are showing improvements in signal performance and tissue interfaces. CP-based scaffolds supply highly favorable static or even dynamic interfaces for tissue engineering. CPs also enable delivery of drugs through a variety of mechanisms and form factors. For biosensing, CPs offer new possibilities to incorporate biological sensing elements in a conducting matrix. Molecular bioelectronics is today used to incorporate (opto)electronic functions in living tissue. Under each topic, the limits of the utility of CPs are discussed and, overall, the major challenges toward implementation of CPs and their devices to real-world applications are highlighted.
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Affiliation(s)
- Erica Zeglio
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW, 2052, Australia
- Department of Micro and Nanosystems, KTH Royal Institute of Technology, 10044, Stockholm, Sweden
| | - Alexandra L Rutz
- Electrical Engineering Division, Department of Engineering, University of Cambridge, 9 JJ Thomson Ave., Cambridge, CB3 0FA, UK
| | - Thomas E Winkler
- Department of Micro and Nanosystems, KTH Royal Institute of Technology, 10044, Stockholm, Sweden
| | - George G Malliaras
- Electrical Engineering Division, Department of Engineering, University of Cambridge, 9 JJ Thomson Ave., Cambridge, CB3 0FA, UK
| | - Anna Herland
- Department of Micro and Nanosystems, KTH Royal Institute of Technology, 10044, Stockholm, Sweden
- Swedish Medical Nanoscience Center, Department of Neuroscience, Karolinska Institute, 17177, Stockholm, Sweden
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30
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Mei C, Chao CW, Lin CW, Li ST, Wu KH, Yang KC, Yu J. Three-dimensional spherical gelatin bubble-based scaffold improves the myotube formation of H9c2 myoblasts. Biotechnol Bioeng 2019; 116:1190-1200. [PMID: 30636318 DOI: 10.1002/bit.26917] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/19/2018] [Accepted: 01/06/2019] [Indexed: 01/09/2023]
Abstract
Microenvironmental factors including physical and chemical cues can regulate stem cells as well as terminally differentiated cells to modulate their biological function and differentiation. However, one of the physical cues, the substrate's dimensionality, has not been studied extensively. In this study, the flow-focusing method with a microfluidic device was used to generate gelatin bubbles to fabricate highly ordered three-dimensional (3D) scaffolds. Rat H9c2 myoblasts were seeded into the 3D gelatin bubble-based scaffolds and compared to those grown on 2D gelatin-coating substrates to demonstrate the influences of spatial cues on cell behaviors. Relative to cells on the 2D substrates, the H9c2 myoblasts were featured by a good survival and normal mitochondrial activity but slower cell proliferation within the 3D scaffolds. The cortical actin filaments of H9c2 cells were localized close to the cell membrane when cultured on the 2D substrates, while the F-actins distributed uniformly and occupied most of the cell cytoplasm within the 3D scaffolds. H9c2 myoblasts fused as multinuclear myotubes within the 3D scaffolds without any induction but cells cultured on the 2D substrates had a relatively lower fusion index even differentiation medium was provided. Although there was no difference in actin α 1 and myosin heavy chain 1, H9c2 cells had a higher myogenin messenger RNA level in the 3D scaffolds than those of on the 2D substrates. This study reveals that the dimensionality influences differentiation and fusion of myoblasts.
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Affiliation(s)
- Chieh Mei
- Department of Chemical Engineering, College of Engineering, National Taiwan University, Taipei, Taiwan
| | - Chih-Wei Chao
- Department of Chemical Engineering, College of Engineering, National Taiwan University, Taipei, Taiwan
| | - Che-Wei Lin
- Department of Chemical Engineering, College of Engineering, National Taiwan University, Taipei, Taiwan
| | - Shing Tak Li
- Department of Chemical Engineering, College of Engineering, National Taiwan University, Taipei, Taiwan
| | - Kuan-Han Wu
- Department of Chemical Engineering, College of Engineering, National Taiwan University, Taipei, Taiwan
| | - Kai-Chiang Yang
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan.,Laboratory of Organ and Tissue Reconstruction, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Jiashing Yu
- Department of Chemical Engineering, College of Engineering, National Taiwan University, Taipei, Taiwan
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31
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de Haan L, Willigers TJJ, Wijkhuijs LEA, Hendrikx M, Nguyen CT, Leclère P, Souren AEJ, Zhou G, Debije MG. Contactless Control of Local Surface Buckling in Photoaligned Gold/Liquid Crystal Polymer Bilayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10543-10549. [PMID: 30089356 PMCID: PMC6136090 DOI: 10.1021/acs.langmuir.8b01934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 08/07/2018] [Indexed: 06/08/2023]
Abstract
Wrinkling is a powerful technique for the preparation of surface structures over large areas, but it is difficult to simultaneously control the direction, period, and amplitude of the wrinkles without resorting to complicated procedures. In this work, we demonstrate a wrinkling system consisting of a liquid crystal polymer network and a thin layer of gold, in which the direction of the wrinkles is controlled by the alignment of the liquid crystal molecules and the average amplitude and period are controlled by a high-intensity UV irradiation. The UV exposure represses the amplitude and period dictated by the total exposure. Using photoalignment and photomasks, we demonstrate an unprecedented control over the wrinkling parameters and were able to generate some striking optical patterns. The mechanism of the wrinkle suppression was investigated and appears to involve localized photodegradation at the polymer-gold interface, possibly due to the formation of mechanoradicals.
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Affiliation(s)
- Laurens
T. de Haan
- SCNU−TUE
Joint Lab of Device Integrated Responsive Materials, National Center
for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, People’s Republic of China
| | - Timo J. J. Willigers
- Stimuli-Responsive
Functional Materials and Devices, Chemical Engineering
and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - Levina E. A. Wijkhuijs
- Stimuli-Responsive
Functional Materials and Devices, Chemical Engineering
and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - Matthew Hendrikx
- Stimuli-Responsive
Functional Materials and Devices, Chemical Engineering
and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - Cuong Thai Nguyen
- Laboratory for Chemistry
of Novel Materials, Department of Chemistry, University of Mons, B 7000 Mons, Belgium
| | - Philippe Leclère
- Laboratory for Chemistry
of Novel Materials, Department of Chemistry, University of Mons, B 7000 Mons, Belgium
| | - Anne E. J. Souren
- Stimuli-Responsive
Functional Materials and Devices, Chemical Engineering
and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - Guofu Zhou
- SCNU−TUE
Joint Lab of Device Integrated Responsive Materials, National Center
for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, People’s Republic of China
- Shenzhen
Guohua Optoelectronics Technology Company Limited, Shenzhen 518110, People’s Republic of China
| | - Michael G. Debije
- Stimuli-Responsive
Functional Materials and Devices, Chemical Engineering
and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
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32
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Application of Bio-Based Wrinkled Surfaces as Cell Culture Scaffolds. COLLOIDS AND INTERFACES 2018. [DOI: 10.3390/colloids2020015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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33
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Du Y, Ge J, Li Y, Ma PX, Lei B. Biomimetic elastomeric, conductive and biodegradable polycitrate-based nanocomposites for guiding myogenic differentiation and skeletal muscle regeneration. Biomaterials 2018; 157:40-50. [DOI: 10.1016/j.biomaterials.2017.12.005] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 12/05/2017] [Indexed: 02/08/2023]
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34
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Kim M, Kim W, Kim G. Topologically Micropatterned Collagen and Poly(ε-caprolactone) Struts Fabricated Using the Poly(vinyl alcohol) Fibrillation/Leaching Process To Develop Efficiently Engineered Skeletal Muscle Tissue. ACS APPLIED MATERIALS & INTERFACES 2017; 9:43459-43469. [PMID: 29171953 DOI: 10.1021/acsami.7b14192] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Optimally designed three-dimensional (3D) biomedical scaffolds for skeletal muscle tissue regeneration pose significant research challenges. Currently, most studies on scaffolds focus on the two-dimensional (2D) surface structures that are patterned in the micro-/nanoscales with various repeating sizes and shapes to induce the alignment of myoblasts and myotube formation. The 2D patterned surface clearly provides effective analytical results of pattern size and shape of the myoblast alignment and differentiation. However, it is inconvenient in terms of the direct application for clinical usage due to the limited thickness and 3D shapeability. Hence, the present study suggests an innovative hydrogel or synthetic structure that consists of uniaxially surface-patterned cylindrical struts for skeleton muscle regeneration. The alignment of the pattern on the hydrogel (collagen) and poly(ε-caprolactone) struts was attained with the fibrillation of poly(vinyl alcohol) and the leaching process. Various cell culture results indicate that the C2C12 cells on the micropatterned collagen structure were fully aligned, and that a significantly high level of myotube formation was achieved when compared to the collagen structures that were not treated with the micropatterning process.
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Affiliation(s)
- Minseong Kim
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University (SKKU) , Suwon, South Korea
| | - WonJin Kim
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University (SKKU) , Suwon, South Korea
| | - GeunHyung Kim
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University (SKKU) , Suwon, South Korea
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35
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Duc C, Vlandas A, Malliaras GG, Senez V. Electrowetting on Immersed Conducting Hydrogel. J Phys Chem B 2017; 121:9947-9956. [PMID: 28930452 DOI: 10.1021/acs.jpcb.7b07971] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Conducting polymers demonstrate an interesting ability to change their wettability at ultralow voltage (<1 V). While the conducting hydrogel poly(3,4-ethylenedioxythiophene) polystyrenesulfonate (PEDOT:PSS) is increasingly used as an interface with biology partly thanks to its mechanical properties, little is known about the electrical control of its wettability. We rely on the captive bubble technique to study this hydrogel property under relevant conditions (fully immerged). We here report that the wettability variations of PEDOT:PSS are driven by an electrowetting phenomenon in contrast to other conducting polymers which are thought to undergo wettability changes due to oxido-reduction reactions. In addition, we propose a modified electrowetting model to describe the wettability variations of PEDOT:PSS in aqueous solution under ultralow voltage and we show how these variations can be tuned in different ranges of contact angles (above or under 90°) by coating the PEDOT:PSS surface.
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Affiliation(s)
- Caroline Duc
- BioMEMS, Univ. Lille, CNRS, ISEN, UMR 8520 - IEMN , F-59000 Lille, France
| | - Alexis Vlandas
- BioMEMS, Univ. Lille, CNRS, ISEN, UMR 8520 - IEMN , F-59000 Lille, France
| | - George G Malliaras
- Department of Bioelectronics, Ecole Nationale Supérieure des Mines CMP-EMSE, MOC , 13541 Gardanne, France
| | - Vincent Senez
- BioMEMS, Univ. Lille, CNRS, ISEN, UMR 8520 - IEMN , F-59000 Lille, France
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36
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Bonisoli A, Marino A, Ciofani G, Greco F. Topographical and Electrical Stimulation of Neuronal Cells through Microwrinkled Conducting Polymer Biointerfaces. Macromol Biosci 2017; 17. [PMID: 28815971 DOI: 10.1002/mabi.201700128] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 06/19/2017] [Indexed: 11/06/2022]
Abstract
The development of smart biointerfaces combining multiple functions is crucial for triggering a variety of cellular responses. In this work, wrinkled organic interfaces based on the conducting polymer poly(3,4-ethylene dioxythiophene) doped with poly(styrene sulfonate) are developed with the aim to simultaneously convey electrical and topographical stimuli to cultured cells. The surface wrinkling of thin films on heat-shrink polymer sheets allows for rapid patterning of self-assembled anisotropic topographies characterized by micro/sub-microscale aligned wrinkles. The developed interfaces prove to support the growth and differentiation of neural cells (SH-SY5Y, human neuroblastoma) and are remarkably effective in promoting axonal guidance, by guiding and stimulating the neurite growth in differentiating cells. Electrical stimulation with biphasic pulses delivered through the conductive wrinkled interface is found to further promote the neurite growth, demonstrating the suitability of such interfaces as platforms for conveying multiple stimuli to cells and tissues.
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Affiliation(s)
- Alberto Bonisoli
- Center for Micro-BioRobotics @SSSA, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025, Pontedera, Italy.,The BioRobotics Institute, Scuola Superiore Sant'Anna, Viale Rinaldo Piaggio 34, 56025, Pontedera, Italy
| | - Attilio Marino
- Smart Bio-Interfaces, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025, Pontedera, Italy
| | - Gianni Ciofani
- Smart Bio-Interfaces, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025, Pontedera, Italy.,Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy
| | - Francesco Greco
- Center for Micro-BioRobotics @SSSA, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025, Pontedera, Italy.,Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, 2-2 Wakamatsu-cho, Shinjuku-ku, 162-8480, Tokyo, Japan
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37
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Scarratt LR, Steiner U, Neto C. A review on the mechanical and thermodynamic robustness of superhydrophobic surfaces. Adv Colloid Interface Sci 2017; 246:133-152. [PMID: 28577754 DOI: 10.1016/j.cis.2017.05.018] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 05/15/2017] [Accepted: 05/29/2017] [Indexed: 12/15/2022]
Abstract
Advancements in the fabrication and study of superhydrophobic surfaces have been significant over the past 10years, and some 20years after the discovery of the lotus effect, the study of special wettability surfaces can be considered mainstream. While the fabrication of superhydrophobic surfaces is well advanced and the physical properties of superhydrophobic surfaces well-understood, the robustness of these surfaces, both in terms of mechanical and thermodynamic properties, are only recently getting attention in the literature. In this review we cover publications that appeared over the past ten years on the thermodynamic and mechanical robustness of superhydrophobic surfaces, by which we mean the long term stability under conditions of wear, shear and pressure. The review is divided into two parts, the first dedicated to thermodynamic robustness and the second dedicated to mechanical robustness of these complex surfaces. Our work is intended as an introductory review for researchers interested in addressing longevity and stability of superhydrophobic surfaces, and provides an outlook on outstanding aspects of investigation.
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38
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Abstract
A major challenge in the growing field of bioelectronic medicine is the development of tissue interface technologies promoting device integration with biological tissues. Materials based on organic bioelectronics show great promise due to a unique combination of electronic and ionic conductivity properties. In this review, we outline exciting developments in the field of organic bioelectronics and demonstrate the medical importance of these active, electronically controllable materials. Importantly, organic bioelectronics offer a means to control cell-surface attachment as required for many device-tissue applications. Experiments have shown that cells readily attach and proliferate on reduced but not oxidized organic bioelectronic materials. In another application, the active properties of organic bioelectronics were used to develop electronically triggered systems for drug release. After incorporating drugs by advanced loading strategies, small compound drugs were released upon electrochemical trigger, independent of charge. Another type of delivery device was used to achieve well-controlled, spatiotemporal delivery of cationic drugs. Via electrophoretic transport within a polymer, cations were delivered with single-cell precision. Finally, organic bioelectronic materials are commonly used as electrode coatings improving the electrical properties of recording and stimulation electrodes. Because such coatings drastically reduce the electrode impedance, smaller electrodes with improved signal-to-noise ratio can be fabricated. Thus, rapid technological advancement combined with the creation of tiny electronic devices reacting to changes in the tissue environment helps to promote the transition from standard pharmaceutical therapy to treatment based on 'electroceuticals'. Moreover, the widening repertoire of organic bioelectronics will expand the options for true biological interfaces, providing the basis for personalized bioelectronic medicine.
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Affiliation(s)
- S Löffler
- Swedish Medical Nanoscience Center, Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - K Melican
- Swedish Medical Nanoscience Center, Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - K P R Nilsson
- Division of Chemistry, Department of Physics, Chemistry and Biology, Linköping University, Linköping, Sweden
| | - A Richter-Dahlfors
- Swedish Medical Nanoscience Center, Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
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Nogales A, Del Campo A, Ezquerra TA, Rodriguez-Hernández J. Wrinkling and Folding on Patched Elastic Surfaces: Modulation of the Chemistry and Pattern Size of Microwrinkled Surfaces. ACS APPLIED MATERIALS & INTERFACES 2017; 9:20188-20195. [PMID: 28521085 DOI: 10.1021/acsami.7b03161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
An unconventional strategy is proposed that takes advantage of localized high-deformation areas, referred to as folded wrinkles, to produce microstructured elastic surfaces with precisely controlled pattern dimensions and chemical distribution. For that purpose, elastic PDMS substrates were prestretched to a different extent and oxidized in particular areas using a mask. When the stretching was removed, the PDMS substrate exhibited out-of-plane deformations that largely depend on the applied prestretching. Prestretchings below 100% lead to affine deformations in which the treated areas are buckled. On the contrary, prestretchings above ε >100% prior to surface treatment induce the formation of folded wrinkles on those micrometer-size ultraviolet-ozone (UVO) treated areas upon relaxation. As a result, dual periodic wrinkles were formed due to the alternation of highly deformed (folded) and low deformed (buckled) areas. Our strategy is based on the surface treatment at precise positions upon prestretching of the elastic substrate (PDMS). Additionally, this approach can be used to template the formation of wrinkled surfaces by alternating lines of folded wrinkles (valleys) and low-deformed areas (hills). This effect allowed us to precisely tune the shape and distribution of the UVO exposed areas by varying the prestretching direction. Moreover, the wrinkle characteristics, including period and amplitude, exhibit a direct relation to the dimensions of the patterns present in the mask.
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Affiliation(s)
- Aurora Nogales
- Instituto de Estructura de la Materia, IEM-CSIC , Serrano 121, 28006 Madrid, Spain
| | - Adolfo Del Campo
- Instituto de Cerámica y Vidrio (ICV-CSIC) , C/Kelsen 5, 28049 Madrid, Spain
| | - Tiberio A Ezquerra
- Instituto de Estructura de la Materia, IEM-CSIC , Serrano 121, 28006 Madrid, Spain
| | - Juan Rodriguez-Hernández
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC) , C/Juan de la Cierva 3, 28006 Madrid, Spain
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Ricotti L, Fujie T. Thin polymeric films for building biohybrid microrobots. BIOINSPIRATION & BIOMIMETICS 2017; 12:021001. [PMID: 28263945 DOI: 10.1088/1748-3190/aa5e5f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This paper aims to describe the disruptive potential that polymeric thin films have in the field of biohybrid devices and to review the recent efforts in this area. Thin (thickness < 1 mm) and ultra-thin (thickness < 1 µm) matrices possess a series of intriguing features, such as large surface area/volume ratio, high flexibility, chemical and physical surface tailorability, etc. This enables the fabrication of advanced bio/non-bio interfaces able to efficiently drive cell-material interactions, which are the key for optimizing biohybrid device performances. Thin films can thus represent suitable platforms on which living and artificial elements are coupled, with the aim of exploiting the unique features of living cells/tissues. This may allow to carry out certain tasks, not achievable with fully artificial technologies. In the paper, after a description of the desirable chemical/physical cues to be targeted and of the fabrication, functionalization and characterization procedures to be used for thin and ultra-thin films, the state-of-the-art of biohybrid microrobots based on micro/nano-membranes are described and discussed. The research efforts in this field are rather recent and they focus on: (1) self-beating cells (such as cardiomyocytes) able to induce a relatively large deformation of the underlying substrates, but affected by a limited controllability by external users; (2) skeletal muscle cells, more difficult to engineer in mature and functional contractile tissues, but featured by a higher controllability. In this context, the different materials used and the performances achieved are analyzed. Despite recent interesting advancements and signs of maturity of this research field, important scientific and technological steps are still needed. In the paper some possible future perspectives are described, mainly concerning thin film manipulation and assembly in multilayer 3D systems, new advanced materials to be used for the fabrication of thin films, cell engineering opportunities and modelling/computational efforts.
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Affiliation(s)
- Leonardo Ricotti
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Viale Rinaldo Piaggio 34, 56025 Pontedera (Pisa), Italy
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Amorini F, Zironi I, Marzocchi M, Gualandi I, Calienni M, Cramer T, Fraboni B, Castellani G. Electrically Controlled "Sponge Effect" of PEDOT:PSS Governs Membrane Potential and Cellular Growth. ACS APPLIED MATERIALS & INTERFACES 2017; 9:6679-6689. [PMID: 28150491 DOI: 10.1021/acsami.6b12480] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
PSS is a highly conductive material with good thermal and chemical stability and enhanced biocompatibility that make it suitable for bioengineering applications. The electrical control of the oxidation state of PEDOT:PSS films allows modulation of peculiar physical and chemical properties of the material, such as topography, wettability, and conductivity, and thus offers a possible route for controlling cellular behavior. Through the use of (i) the electrophysiological response of the plasma membrane as a biosensor of the ionic availability; (ii) relative abundance around the cells via X-ray spectroscopy; and (iii) atomic force microscopy to monitor PEDOT:PSS film thickness relative to its oxidation state, we demonstrate that redox processes confer to PEDOT:PSS the property to modify the ionic environment at the film-liquid interface through a "sponge-like" effect on ions. Finally, we show how this property offers the capability to electrically control central cellular properties such as viability, substrate adhesion, and growth, paving the way for novel bioelectronics and biotechnological applications.
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Affiliation(s)
- Fabrizio Amorini
- Department of Physics and Astronomy, University of Bologna , viale Berti-Pichat 6/2, 40127 Bologna, Italy
| | - Isabella Zironi
- Department of Physics and Astronomy, University of Bologna , viale Berti-Pichat 6/2, 40127 Bologna, Italy
- Interdepartmental Centre "L. Galvani" for Integrated Studies of Bioinformatics, Biophysics and Biocomplexity , via Zamboni 67, 40126 Bologna, Italy
| | - Marco Marzocchi
- Department of Physics and Astronomy, University of Bologna , viale Berti-Pichat 6/2, 40127 Bologna, Italy
| | - Isacco Gualandi
- Department of Physics and Astronomy, University of Bologna , viale Berti-Pichat 6/2, 40127 Bologna, Italy
| | - Maria Calienni
- Department of Physics and Astronomy, University of Bologna , viale Berti-Pichat 6/2, 40127 Bologna, Italy
| | - Tobias Cramer
- Department of Physics and Astronomy, University of Bologna , viale Berti-Pichat 6/2, 40127 Bologna, Italy
| | - Beatrice Fraboni
- Department of Physics and Astronomy, University of Bologna , viale Berti-Pichat 6/2, 40127 Bologna, Italy
| | - Gastone Castellani
- Department of Physics and Astronomy, University of Bologna , viale Berti-Pichat 6/2, 40127 Bologna, Italy
- Interdepartmental Centre "L. Galvani" for Integrated Studies of Bioinformatics, Biophysics and Biocomplexity , via Zamboni 67, 40126 Bologna, Italy
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Gabardo CM, Adams-McGavin RC, Fung BC, Mahoney EJ, Fang Q, Soleymani L. Rapid prototyping of all-solution-processed multi-lengthscale electrodes using polymer-induced thin film wrinkling. Sci Rep 2017; 7:42543. [PMID: 28211898 PMCID: PMC5304207 DOI: 10.1038/srep42543] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 01/09/2017] [Indexed: 02/03/2023] Open
Abstract
Three-dimensional electrodes that are controllable over multiple lengthscales are very important for use in bioanalytical systems that integrate solid-phase devices with solution-phase samples. Here we present a fabrication method based on all-solution-processing and thin film wrinkling using smart polymers that is ideal for rapid prototyping of tunable three-dimensional electrodes and is extendable to large volume manufacturing. Although all-solution-processing is an attractive alternative to vapor-based techniques for low-cost manufacturing of electrodes, it often results in films suffering from low conductivity and poor substrate adhesion. These limitations are addressed here by using a smart polymer to create a conformal layer of overlapping wrinkles on the substrate to shorten the current path and embed the conductor onto the polymer layer. The structural evolution of these wrinkled electrodes, deposited by electroless deposition onto a nanoparticle seed layer, is studied at varying deposition times to understand its effects on structural parameters such as porosity, wrinkle wavelength and height. Furthermore, the effect of structural parameters on functional properties such as electro-active surface area and surface-enhanced Raman scattering is investigated. It is found that wrinkling of electroless-deposited thin films can be used to reduce sheet resistance, increase surface area, and enhance the surface-enhanced Raman scattering signal.
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Affiliation(s)
- Christine M. Gabardo
- McMaster University, School of Biomedical Engineering, Hamilton, L8S 4L7, Canada
| | | | - Barnabas C. Fung
- McMaster University, Department of Engineering Physics, Hamilton, L8S 4L7, Canada
| | - Eric J. Mahoney
- McMaster University, School of Biomedical Engineering, Hamilton, L8S 4L7, Canada
| | - Qiyin Fang
- McMaster University, School of Biomedical Engineering, Hamilton, L8S 4L7, Canada
- McMaster University, Department of Engineering Physics, Hamilton, L8S 4L7, Canada
| | - Leyla Soleymani
- McMaster University, School of Biomedical Engineering, Hamilton, L8S 4L7, Canada
- McMaster University, Department of Engineering Physics, Hamilton, L8S 4L7, Canada
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Anisotropically organized three-dimensional culture platform for reconstruction of a hippocampal neural network. Nat Commun 2017; 8:14346. [PMID: 28146148 PMCID: PMC5296669 DOI: 10.1038/ncomms14346] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 12/19/2016] [Indexed: 01/06/2023] Open
Abstract
In native tissues, cellular and acellular components are anisotropically organized and often aligned in specific directions, providing structural and mechanical properties for actuating biological functions. Thus, engineering alignment not only allows for emulation of native tissue structures but might also enable implementation of specific functionalities. However, achieving desired alignment is challenging, especially in three-dimensional constructs. By exploiting the elastomeric property of polydimethylsiloxane and fibrillogenesis kinetics of collagen, here we introduce a simple yet effective method to assemble and align fibrous structures in a multi-modular three-dimensional conglomerate. Applying this method, we have reconstructed the CA3–CA1 hippocampal neural circuit three-dimensionally in a monolithic gel, in which CA3 neurons extend parallel axons to and synapse with CA1 neurons. Furthermore, we show that alignment of the fibrous scaffold facilitates the establishment of functional connectivity. This method can be applied for reconstructing other neural circuits or tissue units where anisotropic organization in a multi-modular structure is desired. Alignment or anisotropic organisation within and between cells enables biological function but is challenging to engineer. Here, the authors align collagen fibres in a pre-strained polydimethylsiloxane mould to generate a 3D scaffold that guides hippocampal neuron axon growth to form CA3–CA1 neural circuits.
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Xie J, Han X, Ji H, Wang J, Zhao J, Lu C. Self-Supported Crack-Free Conducting Polymer Films with Stabilized Wrinkling Patterns and Their Applications. Sci Rep 2016; 6:36686. [PMID: 27827459 PMCID: PMC5101525 DOI: 10.1038/srep36686] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 10/18/2016] [Indexed: 11/09/2022] Open
Abstract
Self-supported conducting polymer films with controlled microarchitectures are highly attractive from fundamental and applied points of view. Here a versatile strategy is demonstrated to fabricate thin free-standing crack-free polyaniline (PANI)-based films with stable wrinkling patterns. It is based on oxidization polymerization of pyrrole inside a pre-wrinkled PANI film, in which the wrinkled PANI film is used both as a template and oxidizing agent for the first time. The subsequently grown polypyrrole (PPy) and the formation of interpenetrated PANI/PPy networks play a decisive role in enhancing the film integrity and the stability of wrinkles. This enhancing effect is attributed to the modification of internal stresses by the interpenetrated PANI/PPy microstructures. Consequently, a crack-free film with stable controlled wrinkles such as the wavelength, orientation and spatial location has been achieved. Moreover, the wrinkling PANI/PPy film can be removed from the initially deposited substrate to become free-standing. It can be further transferred onto target substrates to fabricate hierarchical patterns and functional devices such as flexible electrodes, gas sensors, and surface-enhanced Raman scattering substrates. This simple universal enhancing strategy has been extended to fabrication of other PANI-based composite systems with crack-free film integrity and stabilized surface patterns, irrespective of pattern types and film geometries.
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Affiliation(s)
- Jixun Xie
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Xue Han
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Haipeng Ji
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Juanjuan Wang
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Jingxin Zhao
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Conghua Lu
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
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45
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Takei A, Jin L, Fujita H, Takei A, Fujita H, Jin L. High-Aspect-Ratio Ridge Structures Induced by Plastic Deformation as a Novel Microfabrication Technique. ACS APPLIED MATERIALS & INTERFACES 2016; 8:24230-24237. [PMID: 27560778 DOI: 10.1021/acsami.6b07957] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Wrinkles on thin film/elastomer bilayer systems provide functional surfaces. The aspect ratio of these wrinkles is critical to their functionality. Much effort has been dedicated to creating high-aspect-ratio structures on the surface of bilayer systems. A highly prestretched elastomer attached to a thin film has recently been shown to form a high-aspect-ratio structure, called a ridge structure, due to a large strain induced in the elastomer. However, the prestretch requirements of the elastomer during thin film attachment are not compatible with conventional thin film deposition methods, such as spin coating, dip coating, and chemical vapor deposition (CVD). Thus, the fabrication method is complex, and ridge structure formation is limited to planar surfaces. This paper presents a new and simple method for constructing ridge structures on a nonplanar surface using a plastic thin film/elastomer bilayer system. A plastic thin film is attached to a stress-free elastomer, and the resulting bilayer system is highly stretched one- or two-dimensionally. Upon the release of the stretch load, the deformation of the elastomer is reversible, while the plastically deformed thin film stays elongated. The combination of the length mismatch and the large strain induced in the elastomer generates ridge structures. The morphology of the plastic thin film/elastomer bilayer system is experimentally studied by varying the physical parameters, and the functionality and the applicability to a nonplanar surface are demonstrated. Finally, we simulate the effect of plasticity on morphology. This study presents a new technique for generating microscale high-aspect-ratio structures and its potential for functional surfaces.
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Affiliation(s)
- Atsushi Takei
- Institute of Industrial Science, The University of Tokyo , 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Lihua Jin
- Department of Mechanical and Aerospace Engineering, University of California, Los Angeles , Los Angeles, California 90095, United States
- Department of Civil & Environmental Engineering, Stanford University , Stanford, California 94305, United States
| | - Hiroyuki Fujita
- Institute of Industrial Science, The University of Tokyo , 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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46
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Campo AD, Nogales A, Ezquerra TA, Rodríguez-Hernández J. Modification of poly(dimethylsiloxane) as a basis for surface wrinkle formation: Chemical and mechanical characterization. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.06.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Prasath Balamurugan G, Pukadyil RN, Thompson MR, Nielsen KE, Brandys FA. Wrinkling in polymer film-polymer substrate systems and a technique to minimize these surface distortions. POLYM ENG SCI 2016. [DOI: 10.1002/pen.24382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- G. Prasath Balamurugan
- MMRI/CAPPA-D, Department of Chemical Engineering; McMaster University; Hamilton ON Canada L8S 4L7
| | - Rohan N. Pukadyil
- MMRI/CAPPA-D, Department of Chemical Engineering; McMaster University; Hamilton ON Canada L8S 4L7
| | - Michael R. Thompson
- MMRI/CAPPA-D, Department of Chemical Engineering; McMaster University; Hamilton ON Canada L8S 4L7
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Wang Q, Huang H, Wei K, Zhao Y. Time-dependent combinatory effects of active mechanical loading and passive topographical cues on cell orientation. Biotechnol Bioeng 2016; 113:2191-201. [PMID: 27003791 DOI: 10.1002/bit.25981] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 03/14/2016] [Accepted: 03/15/2016] [Indexed: 02/02/2023]
Abstract
Mechanical stretching and topographical cues are both effective mechanical stimulations for regulating cell morphology, orientation, and behaviors. The competition of these two mechanical stimulations remains largely underexplored. Previous studies have suggested that a small cyclic mechanical strain is not able to reorient cells that have been pre-aligned by relatively large linear microstructures, but can reorient those pre-aligned by small linear micro/nanostructures if the characteristic dimension of these structures is below a certain threshold. Likewise, for micro/nanostructures with a given characteristic dimension, the strain must exceed a certain magnitude to overrule the topographic cues. There are however no in-depth investigations of such "thresholds" due to the lack of close examination of dynamic cell orientation during and shortly after the mechanical loading. In this study, the time-dependent combinatory effects of active and passive mechanical stimulations on cell orientation are investigated by developing a micromechanical stimulator. The results show that the cells pre-aligned by linear micro/nanostructures can be altered by cyclic in-plane strain, regardless of the structure size. During the loading, the micro/nanostructures can resist the reorientation effects by cyclic in-plane strain while the resistive capability (measured by the mean orientation angle change and the reorientation speed) increases with the increasing characteristic dimension. The micro/nanostructures also can recover the cell orientation after the cessation of cyclic in-plane strain, while the recovering capability increases with the characteristic dimension. The previously observed thresholds are largely dependent on the observation time points. In order to accurately evaluate the combinatory effects of the two mechanical stimulations, observations during the active loading with a short time interval or endpoint observations shortly after the loading are preferred. This study provides a microengineering solution to investigate the time-dependent combinatory effects of the active and passive mechanical stimulations and is expected to enhance our understanding of cell responses to complex mechanical environments. Biotechnol. Bioeng. 2016;113: 2191-2201. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Qian Wang
- Laboratory for Biomedical Microsystems, Department of Biomedical Engineering, The Ohio State University, 294 Bevis Hall, 1080 Carmack Road, Columbus, Ohio
| | - Hanyang Huang
- Laboratory for Biomedical Microsystems, Department of Biomedical Engineering, The Ohio State University, 294 Bevis Hall, 1080 Carmack Road, Columbus, Ohio
| | - Kang Wei
- Laboratory for Biomedical Microsystems, Department of Biomedical Engineering, The Ohio State University, 294 Bevis Hall, 1080 Carmack Road, Columbus, Ohio
| | - Yi Zhao
- Laboratory for Biomedical Microsystems, Department of Biomedical Engineering, The Ohio State University, 294 Bevis Hall, 1080 Carmack Road, Columbus, Ohio.
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Bernardeschi I, Greco F, Ciofani G, Marino A, Mattoli V, Mazzolai B, Beccai L. A soft, stretchable and conductive biointerface for cell mechanobiology. Biomed Microdevices 2016; 17:46. [PMID: 25797705 DOI: 10.1007/s10544-015-9950-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
In mechanobiology the study of cell response to mechanical stimuli is fundamental, and the involved processes (i.e., mechanotransduction) need to be investigated by interfacing (mechanically and electrically) with the cells in dynamic and non-invasive natural-like conditions. In this work, we present a novel soft, stretchable and conductive biointerface that allows both cell mechanical stimulation and dynamic impedance recording. The biointerface stretchability and conductivity, jointly to the biocompatibility and transparency needed to perform cell culture studies, were obtained by exploiting the formation of wrinkles on the surface of a 90 nm thick conductive layer of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) on a pre-stretched 130 μm thick poly(dimethylsiloxane) (PDMS) substrate. Cell adhesion and proliferation of SH-SY5Y human neuroblastoma cells were evaluated, and cell differentiation on the corrugated surface was assessed. We demonstrate how the biointerface remains conductive when applying uniaxial strain up to 10%, and when cell culturing is performed. Finally, a reduction of about 30% of the relative impedance variation signal was measured, with respect to the control, as a result of the mechanical stimulation of cells.
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Affiliation(s)
- Irene Bernardeschi
- Center for Micro-BioRobotics, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025, Pontedera, PI, Italy
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Lejeune E, Javili A, Linder C. Understanding geometric instabilities in thin films via a multi-layer model. SOFT MATTER 2016; 12:806-816. [PMID: 26536391 DOI: 10.1039/c5sm02082d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
When a thin stiff film adhered to a compliant substrate is subject to compressive stresses, the film will experience a geometric instability and buckle out of plane. For high film/substrate stiffness ratios with relatively low levels of strain, the primary mode of instability will either be wrinkling or buckling delamination depending on the material and geometric properties of the system. Previous works approach these systems by treating the film and substrate as homogenous layers, either consistently perfectly attached, or perfectly unattached at interfacial flaws. However, this approach neglects systems where the film and substrate are uniformly weakly attached or where interfacial layers due to surface modifications in either the film or substrate are present. Here we demonstrate a method for accounting for these additional thin surface layers via an analytical solution verified by numerical results. The main outcome of this work is an improved understanding of how these layers influence global behavior. We demonstrate the utility of our model with applications ranging from buckling based metrology in ultrathin films, to an improved understanding of the formation of a novel surface in carbon nanotube bio-interface films. Moving forward, this model can be used to interpret experimental results, particularly for systems which deviate from traditional behavior, and aid in the evaluation and design of future film/substrate systems.
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Affiliation(s)
- Emma Lejeune
- Department of Civil and Environmental Engineering, Stanford University, Stanford, CA 94305, USA.
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