1
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Skillin NP, Kirkpatrick BE, Herbert KM, Nelson BR, Hach GK, Günay KA, Khan RM, DelRio FW, White TJ, Anseth KS. Stiffness anisotropy coordinates supracellular contractility driving long-range myotube-ECM alignment. SCIENCE ADVANCES 2024; 10:eadn0235. [PMID: 38820155 PMCID: PMC11141631 DOI: 10.1126/sciadv.adn0235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 04/30/2024] [Indexed: 06/02/2024]
Abstract
The ability of cells to organize into tissues with proper structure and function requires the effective coordination of proliferation, migration, polarization, and differentiation across length scales. Skeletal muscle is innately anisotropic; however, few biomaterials can emulate mechanical anisotropy to determine its influence on tissue patterning without introducing confounding topography. Here, we demonstrate that substrate stiffness anisotropy coordinates contractility-driven collective cellular dynamics resulting in C2C12 myotube alignment over millimeter-scale distances. When cultured on mechanically anisotropic liquid crystalline polymer networks (LCNs) lacking topography, C2C12 myoblasts collectively polarize in the stiffest direction. Cellular coordination is amplified through reciprocal cell-ECM dynamics that emerge during fusion, driving global myotube-ECM ordering. Conversely, myotube alignment was restricted to small local domains with no directional preference on mechanically isotropic LCNs of the same chemical formulation. These findings provide valuable insights for designing biomaterials that mimic anisotropic microenvironments and underscore the importance of stiffness anisotropy in orchestrating tissue morphogenesis.
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Affiliation(s)
- Nathaniel P. Skillin
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO 80303, USA
- Medical Scientist Training Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Bruce E. Kirkpatrick
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO 80303, USA
- Medical Scientist Training Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Katie M. Herbert
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
| | - Benjamin R. Nelson
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO 80303, USA
| | - Grace K. Hach
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO 80303, USA
| | - Kemal Arda Günay
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO 80303, USA
| | - Ryan M. Khan
- Material, Physical, and Chemical Sciences Center, Sandia National Laboratories, Albuquerque, NM 87185, USA
| | - Frank W. DelRio
- Material, Physical, and Chemical Sciences Center, Sandia National Laboratories, Albuquerque, NM 87185, USA
| | - Timothy J. White
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
| | - Kristi S. Anseth
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO 80303, USA
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2
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Stiefbold M, Zhang H, Wan LQ. Engineered platforms for mimicking cardiac development and drug screening. Cell Mol Life Sci 2024; 81:197. [PMID: 38664263 PMCID: PMC11045633 DOI: 10.1007/s00018-024-05231-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 03/29/2024] [Accepted: 04/07/2024] [Indexed: 04/28/2024]
Abstract
Congenital heart defects are associated with significant health challenges, demanding a deep understanding of the underlying biological mechanisms and, thus, better devices or platforms that can recapitulate human cardiac development. The discovery of human pluripotent stem cells has substantially reduced the dependence on animal models. Recent advances in stem cell biology, genetic editing, omics, microfluidics, and sensor technologies have further enabled remarkable progress in the development of in vitro platforms with increased fidelity and efficiency. In this review, we provide an overview of advancements in in vitro cardiac development platforms, with a particular focus on technological innovation. We categorize these platforms into four areas: two-dimensional solid substrate cultures, engineered substrate architectures that enhance cellular functions, cardiac organoids, and embryos/explants-on-chip models. We conclude by addressing current limitations and presenting future perspectives.
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Affiliation(s)
- Madison Stiefbold
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Biotech 2147, 110 8t Street, Troy, NY, 12180, USA
| | - Haokang Zhang
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Biotech 2147, 110 8t Street, Troy, NY, 12180, USA
| | - Leo Q Wan
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Biotech 2147, 110 8t Street, Troy, NY, 12180, USA.
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA.
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA.
- Center for Modeling, Simulation, and Imaging in Medicine, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA.
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3
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Najm A, Niculescu AG, Grumezescu AM, Beuran M. Emerging Therapeutic Strategies in Sarcopenia: An Updated Review on Pathogenesis and Treatment Advances. Int J Mol Sci 2024; 25:4300. [PMID: 38673885 PMCID: PMC11050002 DOI: 10.3390/ijms25084300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 04/07/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
Sarcopenia is a prevalent degenerative skeletal muscle condition in the elderly population, posing a tremendous burden on diseased individuals and healthcare systems worldwide. Conventionally, sarcopenia is currently managed through nutritional interventions, physical therapy, and lifestyle modification, with no pharmaceutical agents being approved for specific use in this disease. As the pathogenesis of sarcopenia is still poorly understood and there is no treatment recognized as universally effective, recent research efforts have been directed at better comprehending this illness and diversifying treatment strategies. In this respect, this paper overviews the new advances in sarcopenia treatment in correlation with its underlying mechanisms. Specifically, this review creates an updated framework for sarcopenia, describing its etiology, pathogenesis, risk factors, and conventional treatments, further discussing emerging therapeutic approaches like new drug formulations, drug delivery systems, stem cell therapies, and tissue-engineered scaffolds in more detail.
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Affiliation(s)
- Alfred Najm
- Department of Surgery, Carol Davila University of Medicine and Pharmacy, 8 Eroii Sanitari, Sector 5, 050474 Bucharest, Romania; (A.N.); (M.B.)
- Emergency Hospital Floreasca Bucharest, 8 Calea Floresca, Sector 1, 014461 Bucharest, Romania
| | - Adelina-Gabriela Niculescu
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania;
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania
| | - Alexandru Mihai Grumezescu
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania;
- Department of Science and Engineering of Oxide Materials and Nanomaterials, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania
| | - Mircea Beuran
- Department of Surgery, Carol Davila University of Medicine and Pharmacy, 8 Eroii Sanitari, Sector 5, 050474 Bucharest, Romania; (A.N.); (M.B.)
- Emergency Hospital Floreasca Bucharest, 8 Calea Floresca, Sector 1, 014461 Bucharest, Romania
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4
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Taborda M, Catalan KN, Orellana N, Bezjak D, Enrione J, Acevedo CA, Corrales TP. Micropatterned Nanofiber Scaffolds of Salmon Gelatin, Chitosan, and Poly(vinyl alcohol) for Muscle Tissue Engineering. ACS OMEGA 2023; 8:47883-47896. [PMID: 38144088 PMCID: PMC10733945 DOI: 10.1021/acsomega.3c06436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/16/2023] [Accepted: 11/17/2023] [Indexed: 12/26/2023]
Abstract
The development of scaffolds that mimic the aligned fibrous texture of the extracellular matrix has become an important requirement in muscle tissue engineering. Electrospinning is a widely used technique to fabricate biomimetic scaffolds. Therefore, a biopolymer blend composed of salmon gelatin (SG), chitosan (Ch), and poly(vinyl alcohol) (PVA) was developed by electrospinning onto a micropatterned (MP) collector, resulting in a biomimetic scaffold for seeding muscle cells. Rheology and surface tension studies were performed to determine the optimum solution concentration and viscosity for electrospinning. The scaffold microstructure was analyzed using SEM to determine the nanofiber's diameter and orientation. Blends of SG/Ch/PVA exhibited better electrospinnability and handling properties than pure PVA. The resulting scaffolds consist of a porous surface (∼46%), composed of a random fiber distribution, for a flat collector and scaffolds with regions of aligned nanofibers for the MP collector. The nanofiber diameters are 141 ± 2 and 151 ± 2 nm for the flat and MP collector, respectively. In vitro studies showed that myoblasts cultured on scaffold SG/Ch/PVA presented a high rate of cell growth. Furthermore, the aligned nanofibers on the SG/Ch/PVA scaffold provide a suitable platform for myoblast alignment.
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Affiliation(s)
- María
I. Taborda
- Centro
de Biotecnología, Universidad Técnica
Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile
- Programa
de doctorado en Biotecnología, Pontificia
Universidad Católica de Valparaíso−Universidad
Técnica Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile
| | - Karina N. Catalan
- Departamento
de Física, Universidad Técnica
Federico Santa María, Av. España 1680, Valparaíso 2340000, Chile
| | - Nicole Orellana
- Centro
de Biotecnología, Universidad Técnica
Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile
| | - Dragica Bezjak
- Centro
de Biotecnología, Universidad Técnica
Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile
- Programa
de doctorado en Biotecnología, Pontificia
Universidad Católica de Valparaíso−Universidad
Técnica Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile
| | - Javier Enrione
- Escuela
de Nutrición y Dietética, Facultad de Medicina, Universidad de los Andes, Monseñor Álvaro del Portillo 12455, Las Condes, Santiago 7550000, Chile
| | - Cristian A. Acevedo
- Centro
de Biotecnología, Universidad Técnica
Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile
- Departamento
de Física, Universidad Técnica
Federico Santa María, Av. España 1680, Valparaíso 2340000, Chile
- Centro
Científico Tecnológico de Valparaíso (CCTVAL), Universidad Técnica Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile
| | - Tomas P. Corrales
- Centro
de Biotecnología, Universidad Técnica
Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile
- Departamento
de Física, Universidad Técnica
Federico Santa María, Av. España 1680, Valparaíso 2340000, Chile
- Millenium
Nucleus in NanoBioPhysics (NNBP), Valparaíso 2340000, Chile
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5
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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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6
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Aloisio L, Moschetta M, Boschi A, Fleitas AG, Zangoli M, Venturino I, Vurro V, Magni A, Mazzaro R, Morandi V, Candini A, D'Andrea C, Paternò GM, Gazzano M, Lanzani G, Di Maria F. Insight on the Intracellular Supramolecular Assembly of DTTO: A Peculiar Example of Cell-Driven Polymorphism. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2302756. [PMID: 37364565 DOI: 10.1002/adma.202302756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/07/2023] [Indexed: 06/28/2023]
Abstract
The assembly of supramolecular structures within living systems is an innovative approach for introducing artificial constructs and developing biomaterials capable of influencing and/or regulating the biological responses of living organisms. By integrating chemical, photophysical, morphological, and structural characterizations, it is shown that the cell-driven assembly of 2,6-diphenyl-3,5-dimethyl-dithieno[3,2-b:2',3'-d]thiophene-4,4-dioxide (DTTO) molecules into fibers results in the formation of a "biologically assisted" polymorphic form, hence the term bio-polymorph. Indeed, X-ray diffraction reveals that cell-grown DTTO fibers present a unique molecular packing leading to specific morphological, optical, and electrical properties. Monitoring the process of fiber formation in cells with time-resolved photoluminescence, it is established that cellular machinery is necessary for fiber production and a non-classical nucleation mechanism for their growth is postulated. These biomaterials may have disruptive applications in the stimulation and sense of living cells, but more crucially, the study of their genesis and properties broadens the understanding of life beyond the native components of cells.
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Affiliation(s)
- Ludovico Aloisio
- Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci 32, Milano, 20133, Italy
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Rubattino 81, Milano, 20134, Italy
| | - Matteo Moschetta
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Rubattino 81, Milano, 20134, Italy
| | - Alex Boschi
- Center for Nanotechnology Innovation, Istituto Italiano di Tecnologia, Piazza S. Silvestro 12, Pisa, 56127, Italy
| | - Ariel García Fleitas
- Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci 32, Milano, 20133, Italy
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Rubattino 81, Milano, 20134, Italy
| | - Mattia Zangoli
- Institute for Organic Synthesis and Photoreactivity (ISOF), National Research Council of Italy (CNR), Via P. Gobetti 101, Bologna, I-40129, Italy
| | - Ilaria Venturino
- Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci 32, Milano, 20133, Italy
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Rubattino 81, Milano, 20134, Italy
| | - Vito Vurro
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Rubattino 81, Milano, 20134, Italy
| | - Arianna Magni
- Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci 32, Milano, 20133, Italy
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Rubattino 81, Milano, 20134, Italy
| | - Raffaello Mazzaro
- Dipartimento di Fisica e Astronomia "Augusto Righi", Università di Bologna, Via C. Berti Pichat 6/2, Bologna, 40127, Italy
| | - Vittorio Morandi
- Institute for Microelectronics and Microsystems (IMM), National Research Council of Italy (CNR), Via P. Gobetti 101, Bologna, 40129, Italy
| | - Andrea Candini
- Institute for Organic Synthesis and Photoreactivity (ISOF), National Research Council of Italy (CNR), Via P. Gobetti 101, Bologna, I-40129, Italy
| | - Cosimo D'Andrea
- Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci 32, Milano, 20133, Italy
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Rubattino 81, Milano, 20134, Italy
| | - Giuseppe Maria Paternò
- Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci 32, Milano, 20133, Italy
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Rubattino 81, Milano, 20134, Italy
| | - Massimo Gazzano
- Institute for Organic Synthesis and Photoreactivity (ISOF), National Research Council of Italy (CNR), Via P. Gobetti 101, Bologna, I-40129, Italy
| | - Guglielmo Lanzani
- Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci 32, Milano, 20133, Italy
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Rubattino 81, Milano, 20134, Italy
| | - Francesca Di Maria
- Institute for Organic Synthesis and Photoreactivity (ISOF), National Research Council of Italy (CNR), Via P. Gobetti 101, Bologna, I-40129, Italy
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7
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Yuan Z, Guo Q, Jin D, Zhang P, Yang W. Biohybrid Soft Robots Powered by Myocyte: Current Progress and Future Perspectives. MICROMACHINES 2023; 14:1643. [PMID: 37630179 PMCID: PMC10456826 DOI: 10.3390/mi14081643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/17/2023] [Accepted: 08/19/2023] [Indexed: 08/27/2023]
Abstract
Myocyte-driven robots, a type of biological actuator that combines myocytes with abiotic systems, have gained significant attention due to their high energy efficiency, sensitivity, biocompatibility, and self-healing capabilities. These robots have a unique advantage in simulating the structure and function of human tissues and organs. This review covers the research progress in this field, detailing the benefits of myocyte-driven robots over traditional methods, the materials used in their fabrication (including myocytes and extracellular materials), and their properties and manufacturing techniques. Additionally, the review explores various control methods, robot structures, and motion types. Lastly, the potential applications and key challenges faced by myocyte-driven robots are discussed and summarized.
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Affiliation(s)
- Zheng Yuan
- School of Electromechanical and Automotive Engineering, Yantai University, Yantai 264005, China; (Z.Y.); (Q.G.)
| | - Qinghao Guo
- School of Electromechanical and Automotive Engineering, Yantai University, Yantai 264005, China; (Z.Y.); (Q.G.)
| | - Delu Jin
- School of Human Ities and Social Science, Xi’an Jiaotong University, Xi’an 710049, China;
| | - Peifan Zhang
- Control Science and Engineering, Naval Aviation University, Yantai 264001, China
| | - Wenguang Yang
- School of Electromechanical and Automotive Engineering, Yantai University, Yantai 264005, China; (Z.Y.); (Q.G.)
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8
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Skillin NP, Kirkpatrick BE, Herbert KM, Nelson BR, Hach GK, Günay KA, Khan RM, DelRio FW, White TJ, Anseth KS. Stiffness anisotropy coordinates supracellular contractility driving long-range myotube-ECM alignment. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.08.552197. [PMID: 37609145 PMCID: PMC10441277 DOI: 10.1101/2023.08.08.552197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
In skeletal muscle tissue, injury-related changes in stiffness activate muscle stem cells through mechanosensitive signaling pathways. Functional muscle tissue regeneration also requires the effective coordination of myoblast proliferation, migration, polarization, differentiation, and fusion across multiple length scales. Here, we demonstrate that substrate stiffness anisotropy coordinates contractility-driven collective cellular dynamics resulting in C2C12 myotube alignment over millimeter-scale distances. When cultured on mechanically anisotropic liquid crystalline polymer networks (LCNs) lacking topographic features that could confer contact guidance, C2C12 myoblasts collectively polarize in the stiffest direction of the substrate. Cellular coordination is amplified through reciprocal cell-ECM dynamics that emerge during fusion, driving global myotube-ECM ordering. Conversely, myotube alignment was restricted to small local domains with no directional preference on mechanically isotropic LCNs of same chemical formulation. These findings reveal a role for stiffness anisotropy in coordinating emergent collective cellular dynamics, with implications for understanding skeletal muscle tissue development and regeneration.
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Affiliation(s)
- Nathaniel P. Skillin
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Medical Scientist Training Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Bruce E. Kirkpatrick
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Medical Scientist Training Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Katie M. Herbert
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Benjamin R. Nelson
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Grace K. Hach
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Kemal Arda Günay
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Ryan M. Khan
- Material, Physical, and Chemical Sciences Center, Sandia National Laboratories, Albuquerque, NM, 87185, USA
| | - Frank W. DelRio
- Material, Physical, and Chemical Sciences Center, Sandia National Laboratories, Albuquerque, NM, 87185, USA
| | - Timothy J. White
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Kristi S. Anseth
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Lead contact
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9
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Wu S, Ruan L, Wu J, Wu M, Chu LT, Kwong HK, Lam ML, Chen TH. Scalable pattern formation of skeletal myotubes by synergizing microtopographic cues and chiral nematics of cells. Biofabrication 2023; 15. [PMID: 36791461 DOI: 10.1088/1758-5090/acbc4d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 02/15/2023] [Indexed: 02/17/2023]
Abstract
Topographical cues have been widely used to facilitate cell fusion in skeletal muscle formation. However, an unexpected yet consistent chiral orientation of myotubes deviating from the groove boundaries is commonly observed but has long been unattended. In this study, we report a method to guide the formation of skeletal myotubes into scalable and controlled patterns. By inducing C2C12 myoblasts onto grooved patterns with different widths (from 0.4 to 200μm), we observed an enhanced chiral orientation of cells developing on wide grooves (50 and 100μm width) since the first day of induction. Active chiral nematics of cells involving cell migration and chiral rotation of the cell nucleus subsequently led to a unified chiral orientation of the myotubes. Importantly, these chiral myotubes were formed with enhanced length, diameter, and contractility on wide grooves. Treatment of latrunculin A (Lat A) suppressed the chiral rotation and migration of cells as well as the myotube formation, suggesting the essence of chiral nematics of cells for myogenesis. Finally, by arranging wide grooved/striped patterns with corresponding compensation angles to synergize microtopographic cues and chiral nematics of cells, intricate and scalable patterns of myotubes were formed, providing a strategy for engineering skeletal muscle tissue formation.
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Affiliation(s)
- Siying Wu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China
| | - Lingyan Ruan
- School of Creative Media, City University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China
| | - Jianpeng Wu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China
| | - Minghui Wu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China
| | - Lok Ting Chu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China
| | - Hoi Kwan Kwong
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China
| | - Miu Ling Lam
- School of Creative Media, City University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China
| | - Ting-Hsuan Chen
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China
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10
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Self-spinning filaments for autonomously linked microfibers. Nat Commun 2023; 14:625. [PMID: 36739283 PMCID: PMC9899204 DOI: 10.1038/s41467-023-36355-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 01/30/2023] [Indexed: 02/06/2023] Open
Abstract
Filamentous bundles are ubiquitous in Nature, achieving highly adaptive functions and structural integrity from assembly of diverse mesoscale supramolecular elements. Engineering routes to synthetic, topologically integrated analogs demands precisely coordinated control of multiple filaments' shapes and positions, a major challenge when performed without complex machinery or labor-intensive processing. Here, we demonstrate a photocreasing design that encodes local curvature and twist into mesoscale polymer filaments, enabling their programmed transformation into target 3-dimensional geometries. Importantly, patterned photocreasing of filament arrays drives autonomous spinning to form linked filament bundles that are highly entangled and structurally robust. In individual filaments, photocreases unlock paths to arbitrary, 3-dimensional curves in space. Collectively, photocrease-mediated bundling establishes a transformative paradigm enabling smart, self-assembled mesostructures that mimic performance-differentiating structures in Nature (e.g., tendon and muscle fiber) and the macro-engineered world (e.g., rope).
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11
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Behre A, Tashman JW, Dikyol C, Shiwarski DJ, Crum RJ, Johnson SA, Kommeri R, Hussey GS, Badylak SF, Feinberg AW. 3D Bioprinted Patient-Specific Extracellular Matrix Scaffolds for Soft Tissue Defects. Adv Healthc Mater 2022; 11:e2200866. [PMID: 36063047 PMCID: PMC9780169 DOI: 10.1002/adhm.202200866] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 08/02/2022] [Indexed: 01/28/2023]
Abstract
Soft tissue injuries such as volumetric muscle loss (VML) are often too large to heal normally on their own, resulting in scar formation and functional deficits. Decellularized extracellular matrix (dECM) scaffolds placed into these wounds have shown the ability to modulate the immune response and drive constructive healing. This provides a potential solution for functional tissue regeneration, however, these acellular dECM scaffolds are challenging to fabricate into complex geometries. 3D bioprinting is uniquely positioned to address this, being able to create patient-specific scaffolds based on clinical 3D imaging data. Here, a process to use freeform reversible embedding of suspended hydrogels (FRESH) 3D bioprinting and computed tomography (CT) imaging to build large volume, patient-specific dECM patches (≈12 × 8 × 2 cm) for implantation into canine VML wound models is developed. Quantitative analysis shows that these dECM patches are dimensionally accurate and conformally adapt to the surface of complex wounds. Finally, this approach is extended to a human VML injury to demonstrate the fabrication of clinically relevant dECM scaffolds with precise control over fiber alignment and micro-architecture. Together these advancements represent a step towards an improved, clinically translatable, patient-specific treatment for soft tissue defects from trauma, tumor resection, and other surgical procedures.
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Affiliation(s)
- Anne Behre
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Joshua W Tashman
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Caner Dikyol
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Daniel J Shiwarski
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Raphael J Crum
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, 15219, USA
| | - Scott A Johnson
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, 15219, USA
| | - Remya Kommeri
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, 15219, USA
| | - George S Hussey
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, 15219, USA
| | - Stephen F Badylak
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, 15219, USA
| | - Adam W Feinberg
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, 15219, USA
- Department of Materials Science & Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
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12
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Establishment of a system evaluating the contractile force of electrically stimulated myotubes from wrinkles formed on elastic substrate. Sci Rep 2022; 12:13818. [PMID: 35970858 PMCID: PMC9378739 DOI: 10.1038/s41598-022-17548-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 07/27/2022] [Indexed: 11/09/2022] Open
Abstract
Muscle weakness is detrimental not only to quality of life but also life expectancy. However, effective drugs have still not been developed to improve and prevent muscle weakness associated with aging or diseases. One reason for the delay in drug discovery is that no suitable in vitro screening system has been established to test whether drugs improve muscle strength. Here, we used a specific deformable silicone gel substrate to effectively and sensitively evaluate the contractile force generated by myotubes from wrinkles formed on the substrate. Using this system, it was found that the contractile force generated by an atrophic phenotype of myotubes induced by dexamethasone or cancer cell-conditioned medium treatment significantly decreased while that generated by hypertrophic myotubes induced by insulin-like growth factor-1 significantly increased. Notably, it was found that changes in the index related to contractile force can detect atrophic or hypertrophic phenotypes more sensitively than changes in myotube diameter or myosin heavy chain expression, both commonly used to evaluate myotube function. These results suggest that our proposed system will be an effective tool for assessing the contractile force-related state of myotubes, which are available for the development of drugs to prevent and/or treat muscle weakness.
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13
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Myocyte Culture with Decellularized Skeletal Muscle Sheet with Observable Interaction with the Extracellular Matrix. Bioengineering (Basel) 2022; 9:bioengineering9070309. [PMID: 35877360 PMCID: PMC9311603 DOI: 10.3390/bioengineering9070309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 07/09/2022] [Accepted: 07/11/2022] [Indexed: 11/17/2022] Open
Abstract
In skeletal muscles, muscle fibers are highly organized and bundled within the basement membrane. Several microfabricated substrate models have failed to mimic the macrostructure of native muscle, including various extracellular matrix (ECM) proteins. Therefore, we developed and evaluated a system using decellularized muscle tissue and mouse myoblasts C2C12 to analyze the interaction between native ECM and myocytes. Chicken skeletal muscle was sliced into sheets and decellularized to prepare decellularized skeletal muscle sheets (DSMS). C2C12 was then seeded and differentiated on DSMS. Immunostaining for ECM molecules was performed to examine the relationship between myoblast adhesion status, myotube orientation, and collagen IV orientation. Myotube survival in long-term culture was confirmed by calcein staining. C2C12 myoblasts adhered to scaffolds in DSMS and developed adhesion plaques and filopodia. Furthermore, C2C12 myotubes showed orientation along the ECM orientation within DSMS. Compared to plastic dishes, detachment was less likely to occur on DSMS, and long-term incubation was possible. This culture technique reproduces a cell culture environment reflecting the properties of living skeletal muscle, thereby allowing studies on the interaction between the ECM and myocytes.
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14
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Vesga-Castro C, Aldazabal J, Vallejo-Illarramendi A, Paredes J. Contractile force assessment methods for in vitro skeletal muscle tissues. eLife 2022; 11:e77204. [PMID: 35604384 PMCID: PMC9126583 DOI: 10.7554/elife.77204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 04/27/2022] [Indexed: 02/06/2023] Open
Abstract
Over the last few years, there has been growing interest in measuring the contractile force (CF) of engineered muscle tissues to evaluate their functionality. However, there are still no standards available for selecting the most suitable experimental platform, measuring system, culture protocol, or stimulation patterns. Consequently, the high variability of published data hinders any comparison between different studies. We have identified that cantilever deflection, post deflection, and force transducers are the most commonly used configurations for CF assessment in 2D and 3D models. Additionally, we have discussed the most relevant emerging technologies that would greatly complement CF evaluation with intracellular and localized analysis. This review provides a comprehensive analysis of the most significant advances in CF evaluation and its critical parameters. In order to compare contractile performance across experimental platforms, we have used the specific force (sF, kN/m2), CF normalized to the calculated cross-sectional area (CSA). However, this parameter presents a high variability throughout the different studies, which indicates the need to identify additional parameters and complementary analysis suitable for proper comparison. We propose that future contractility studies in skeletal muscle constructs report detailed information about construct size, contractile area, maturity level, sarcomere length, and, ideally, the tetanus-to-twitch ratio. These studies will hopefully shed light on the relative impact of these variables on muscle force performance of engineered muscle constructs. Prospective advances in muscle tissue engineering, particularly in muscle disease models, will require a joint effort to develop standardized methodologies for assessing CF of engineered muscle tissues.
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Affiliation(s)
- Camila Vesga-Castro
- University of Navarra, Tecnun School of Engineering, Manuel de LardizábalSan SebastianSpain
- University of Navarra, Biomedical Engineering Center, Campus UniversitarioPamplonaSpain
- Group of Neurosciences, Department of Pediatrics, UPV/EHU, Hospital Donostia - IIS BiodonostiaSan SebastianSpain
| | - Javier Aldazabal
- University of Navarra, Tecnun School of Engineering, Manuel de LardizábalSan SebastianSpain
- University of Navarra, Biomedical Engineering Center, Campus UniversitarioPamplonaSpain
| | - Ainara Vallejo-Illarramendi
- Group of Neurosciences, Department of Pediatrics, UPV/EHU, Hospital Donostia - IIS BiodonostiaSan SebastianSpain
- CIBERNED, Instituto de Salud Carlos III, Ministry of Science, Innovation, and UniversitiesMadridSpain
| | - Jacobo Paredes
- University of Navarra, Tecnun School of Engineering, Manuel de LardizábalSan SebastianSpain
- University of Navarra, Biomedical Engineering Center, Campus UniversitarioPamplonaSpain
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15
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Fritschen A, Bell AK, Königstein I, Stühn L, Stark RW, Blaeser A. Investigation and comparison of resin materials in transparent DLP-printing for application in cell culture and organs-on-a-chip. Biomater Sci 2022; 10:1981-1994. [PMID: 35262097 DOI: 10.1039/d1bm01794b] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Organs-on-a-Chip (OOCs) have recently led to major discoveries and a better understanding of 3D cell organization, cell-cell interactions and tissue response to drugs and biological cues. However, their complexity and variability are still limited by the available fabrication technology. Transparent, cytocompatible and high-resolution 3D-printing could overcome these limitations, offering a flexible and low-cost alternative to soft lithography. Many advances have been made in stereolithography printing regarding resin formulation and the general printing process, but a systematic analysis of the printing process steps, employed resins and post-treatment procedures with a strong focus on the requirements in OOCs is missing. To fill this gap, this work provides an in-depth analysis of three different resin systems in comparison to polystyrene (PS) and poly(dimethylsiloxane) (PDMS), which can be considered the gold-standards in cell culture and microfluidics. The resins were characterized with respect to transparency, cytocompatibility and print resolution. These properties are not only governed by the resin composition, but additionally by the post-treatment procedure. The investigation of the mechanical (elastic modulus ∼2.2 GPa) and wetting properties (∼60° native / 20° plasma treated) showed a behavior very similar to PS. In addition, the absorbance of small molecules was two orders of magnitude lower in the applied resins (diffusion constant ∼0.01 μm2 s-1) than for PDMS (2.5 μm2 s-1), demonstrating the intrinsic suitability of these materials for OOCs. Raman spectroscopy and UV/VIS spectrophotometry revealed that post-treatment increased monomer conversion up to 2 times and removed photo initiator residues, leading to an increased transparency of up to 50% and up to 10-times higher cell viability. High magnification fluorescence imaging of HUVECs and L929 cells cultivated on printed dishes shows the high optical qualities of prints fabricated by the Digital Light Processing (DLP) printer. Finally, components of microfluidic chips such as high-aspect ratio pillars and holes with a diameter of 50 μm were printed. Concluding, the suitability of DLP-printing for OOCs was demonstrated by filling a printed chip with a cell-hydrogel mixture using a microvalve bioprinter, followed by the successful cultivation under perfusion. Our results highlight that DLP-printing has matured into a robust fabrication technology ready for application in extensive and versatile OOC research.
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Affiliation(s)
- Anna Fritschen
- Technical University of Darmstadt, Department of Mechanical Engineering, BioMedical Printing Technology, Magdalenenstr. 2, 64289 Darmstadt, Germany.
| | - Alena K Bell
- Technical University of Darmstadt, Institute of Materials Science, Physics of Surfaces, Alarich-Weiss-Str. 16, 64287 Darmstadt, Germany
| | - Inga Königstein
- Technical University of Darmstadt, Department of Mechanical Engineering, BioMedical Printing Technology, Magdalenenstr. 2, 64289 Darmstadt, Germany.
| | - Lukas Stühn
- Technical University of Darmstadt, Institute of Materials Science, Physics of Surfaces, Alarich-Weiss-Str. 16, 64287 Darmstadt, Germany
| | - Robert W Stark
- Technical University of Darmstadt, Institute of Materials Science, Physics of Surfaces, Alarich-Weiss-Str. 16, 64287 Darmstadt, Germany
| | - Andreas Blaeser
- Technical University of Darmstadt, Department of Mechanical Engineering, BioMedical Printing Technology, Magdalenenstr. 2, 64289 Darmstadt, Germany. .,Technical University of Darmstadt, Centre for Synthetic Biology, Schnittspahnstr. 10, 64287 Darmstadt, Germany
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16
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Rothermel TM, Cook BL, Alford PW. Cellular Microbiaxial Stretching Assay for Measurement and Characterization of the Anisotropic Mechanical Properties of Micropatterned Cells. Curr Protoc 2022; 2:e370. [PMID: 35195953 DOI: 10.1002/cpz1.370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Characterizing the mechanical properties of single cells is important for developing descriptive models of tissue mechanics and improving the understanding of mechanically driven cell processes. Standard methods for measuring single-cell mechanical properties typically provide isotropic mechanical descriptions. However, many cells exhibit specialized geometries in vivo, with anisotropic cytoskeletal architectures reflective of their function, and are exposed to dynamic multiaxial loads, raising the need for more complete descriptions of their anisotropic mechanical properties under complex deformations. Here, we describe the cellular microbiaxial stretching (CμBS) assay in which controlled deformations are applied to micropatterned cells while simultaneously measuring cell stress. CμBS utilizes a set of linear actuators to apply tensile or compressive, short- or long-term deformations to cells micropatterned on a fluorescent bead-doped polyacrylamide gel. Using traction force microscopy principles and the known geometry of the cell and the mechanical properties of the underlying gel, we calculate the stress within the cell to formulate stress-strain curves that can be further used to create mechanical descriptions of the cells, such as strain energy density functions. © 2022 Wiley Periodicals LLC. Basic Protocol 1: Assembly of CμBS stretching constructs Basic Protocol 2: Polymerization of micropatterned, bead-doped polyacrylamide gel on an elastomer membrane Support Protocol: Cell culture and seeding onto CμBS constructs Basic Protocol 3: Implementing CμBS stretching protocols and traction force microscopy Basic Protocol 4: Data analysis and cell stress measurements.
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Affiliation(s)
- Taylor M Rothermel
- Department of Biomedical Engineering, University of Minnesota, Minneapolis, Minnesota
| | - Bernard L Cook
- Department of Biomedical Engineering, University of Minnesota, Minneapolis, Minnesota
| | - Patrick W Alford
- Department of Biomedical Engineering, University of Minnesota, Minneapolis, Minnesota
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17
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Lee G, Cho Y, Kim EH, Choi JM, Chae SS, Lee MG, Kim J, Choi WJ, Kwon J, Han EH, Kim SH, Park S, Chung YH, Chi SG, Jung BH, Shin JH, Lee JO. Pillar-Based Mechanical Induction of an Aggressive Tumorigenic Lung Cancer Cell Model. ACS APPLIED MATERIALS & INTERFACES 2022; 14:20-31. [PMID: 34914354 DOI: 10.1021/acsami.1c12380] [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: 06/14/2023]
Abstract
Tissue microarchitecture imposes physical constraints to the migration of individual cells. Especially in cancer metastasis, three-dimensional structural barriers within the extracellular matrix are known to affect the migratory behavior of cells, regulating the pathological state of the cells. Here, we employed a culture platform with micropillar arrays of 2 μm diameter and 16 μm pitch (2.16 micropillar) as a mechanical stimulant. Using this platform, we investigated how a long-term culture of A549 human lung carcinoma cells on the (2.16) micropillar-embossed dishes would influence the pathological state of the cell. A549 cells grown on the (2.16) micropillar array with 10 μm height exhibited a significantly elongated morphology and enhanced migration even after the detachment and reattachment, as evidenced in the conventional wound-healing assay, single-cell tracking analysis, and in vivo tumor colonization assays. Moreover, the pillar-induced morphological deformation in nuclei was accompanied by cell-cycle arrest in the S phase, leading to suppressed proliferation. While these marked traits of morphology-migration-proliferation support more aggressive characteristics of metastatic cancer cells, typical indices of epithelial-mesenchymal transition were not found, but instead, remarkable traces of amoeboidal transition were confirmed. Our study also emphasizes the importance of mechanical stimuli from the microenvironment during pathogenesis and how gained traits can be passed onto subsequent generations, ultimately affecting their pathophysiological behavior. Furthermore, this study highlights the potential use of pillar-based mechanical stimuli as an in vitro cell culture strategy to induce more aggressive tumorigenic cancer cell models.
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Affiliation(s)
- Geonhee Lee
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Youngbin Cho
- Department of Mechanical Engineering, Korea Advanced of Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Eun Hye Kim
- Laboratory of Translational Therapeutics, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Jong Min Choi
- Molecular Recognition Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Soo Sang Chae
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Min-Goo Lee
- Department of Life Sciences, Korea University, Seoul 02841, Republic of Korea
| | - Jonghyun Kim
- Division of Bioconvergence Analysis, Korea Basic Science Institute (KBSI), Cheongju 28119, Republic of Korea
| | - Won Jin Choi
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Joseph Kwon
- Division of Bioconvergence Analysis, Korea Basic Science Institute (KBSI), Cheongju 28119, Republic of Korea
| | - Eun Hee Han
- Division of Bioconvergence Analysis, Korea Basic Science Institute (KBSI), Cheongju 28119, Republic of Korea
| | - Seong Hwan Kim
- Laboratory of Translational Therapeutics, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Sungsu Park
- School of Mechanical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| | - Young-Ho Chung
- Division of Bioconvergence Analysis, Korea Basic Science Institute (KBSI), Cheongju 28119, Republic of Korea
| | - Sung-Gil Chi
- Department of Life Sciences, Korea University, Seoul 02841, Republic of Korea
| | - Byung Hwa Jung
- Molecular Recognition Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Division of Bio-Medical Science and Technology, KIST School, Korea University of Science and Technology (UST), Seoul 02792, Republic of Korea
| | - Jennifer H Shin
- Department of Mechanical Engineering, Korea Advanced of Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Jeong-O Lee
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
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18
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Fralish Z, Lotz EM, Chavez T, Khodabukus A, Bursac N. Neuromuscular Development and Disease: Learning From in vitro and in vivo Models. Front Cell Dev Biol 2021; 9:764732. [PMID: 34778273 PMCID: PMC8579029 DOI: 10.3389/fcell.2021.764732] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 10/06/2021] [Indexed: 01/02/2023] Open
Abstract
The neuromuscular junction (NMJ) is a specialized cholinergic synaptic interface between a motor neuron and a skeletal muscle fiber that translates presynaptic electrical impulses into motor function. NMJ formation and maintenance require tightly regulated signaling and cellular communication among motor neurons, myogenic cells, and Schwann cells. Neuromuscular diseases (NMDs) can result in loss of NMJ function and motor input leading to paralysis or even death. Although small animal models have been instrumental in advancing our understanding of the NMJ structure and function, the complexities of studying this multi-tissue system in vivo and poor clinical outcomes of candidate therapies developed in small animal models has driven the need for in vitro models of functional human NMJ to complement animal studies. In this review, we discuss prevailing models of NMDs and highlight the current progress and ongoing challenges in developing human iPSC-derived (hiPSC) 3D cell culture models of functional NMJs. We first review in vivo development of motor neurons, skeletal muscle, Schwann cells, and the NMJ alongside current methods for directing the differentiation of relevant cell types from hiPSCs. We further compare the efficacy of modeling NMDs in animals and human cell culture systems in the context of five NMDs: amyotrophic lateral sclerosis, myasthenia gravis, Duchenne muscular dystrophy, myotonic dystrophy, and Pompe disease. Finally, we discuss further work necessary for hiPSC-derived NMJ models to function as effective personalized NMD platforms.
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Affiliation(s)
- Zachary Fralish
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC, United States
| | - Ethan M Lotz
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC, United States
| | - Taylor Chavez
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC, United States
| | - Alastair Khodabukus
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC, United States
| | - Nenad Bursac
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC, United States
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19
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Günay KA, Silver JS, Chang TL, Bednarski OJ, Bannister KL, Rogowski CJ, Olwin BB, Anseth KS. Myoblast mechanotransduction and myotube morphology is dependent on BAG3 regulation of YAP and TAZ. Biomaterials 2021; 277:121097. [PMID: 34481290 DOI: 10.1016/j.biomaterials.2021.121097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 07/26/2021] [Accepted: 08/24/2021] [Indexed: 11/30/2022]
Abstract
Skeletal muscle tissue is mechanically dynamic with changes in stiffness influencing function, maintenance, and regeneration. We modeled skeletal muscle mechanical changes in culture with dynamically stiffening hydrogels demonstrating that the chaperone protein BAG3 transduces matrix stiffness by redistributing YAP and TAZ subcellular localization in muscle progenitor cells. BAG3 depletion increases cytoplasmic retention of YAP and TAZ, desensitizing myoblasts to changes in hydrogel elastic moduli. Upon differentiation, muscle progenitors depleted of BAG3 formed enlarged, round myotubes lacking the typical cylindrical morphology. The aberrant morphology is dependent on YAP/TAZ signaling, which was sequestered in the cytoplasm in BAG3-depleted myotubes but predominately nuclear in cylindrical myotubes of control cells. Control progenitor cells induced to differentiate on soft (E' = 4 and 12 kPa) hydrogels formed circular myotubes similar to those observed in BAG3-depleted cells. Inhibition of the Hippo pathway partially restored myotube morphologies, permitting nuclear translocation of YAP and TAZ in BAG3-depleted myogenic progenitors. Thus, BAG3 is a critical mediator of dynamic stiffness changes in muscle tissue, coupling mechanical alterations to intracellular signals and inducing changes in gene expression that influence muscle progenitor cell morphology and differentiation.
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Affiliation(s)
- K Arda Günay
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA; BioFrontiers Institute, University of Colorado, Boulder, CO, USA
| | - Jason S Silver
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA; BioFrontiers Institute, University of Colorado, Boulder, CO, USA; Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO, USA; Medical Scientist Training Program, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Tze-Ling Chang
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA; BioFrontiers Institute, University of Colorado, Boulder, CO, USA
| | - Olivia J Bednarski
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA; BioFrontiers Institute, University of Colorado, Boulder, CO, USA
| | - Kendra L Bannister
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA; BioFrontiers Institute, University of Colorado, Boulder, CO, USA
| | - Cameron J Rogowski
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA; BioFrontiers Institute, University of Colorado, Boulder, CO, USA
| | - Bradley B Olwin
- BioFrontiers Institute, University of Colorado, Boulder, CO, USA; Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO, USA.
| | - Kristi S Anseth
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA; BioFrontiers Institute, University of Colorado, Boulder, CO, USA.
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20
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Santoso JW, Li X, Gupta D, Suh GC, Hendricks E, Lin S, Perry S, Ichida JK, Dickman D, McCain ML. Engineering skeletal muscle tissues with advanced maturity improves synapse formation with human induced pluripotent stem cell-derived motor neurons. APL Bioeng 2021; 5:036101. [PMID: 34286174 PMCID: PMC8282350 DOI: 10.1063/5.0054984] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 06/21/2021] [Indexed: 12/12/2022] Open
Abstract
To develop effective cures for neuromuscular diseases, human-relevant in vitro models of neuromuscular tissues are critically needed to probe disease mechanisms on a cellular and molecular level. However, previous attempts to co-culture motor neurons and skeletal muscle have resulted in relatively immature neuromuscular junctions (NMJs). In this study, NMJs formed by human induced pluripotent stem cell (hiPSC)-derived motor neurons were improved by optimizing the maturity of the co-cultured muscle tissue. First, muscle tissues engineered from the C2C12 mouse myoblast cell line, cryopreserved primary human myoblasts, and freshly isolated primary chick myoblasts on micromolded gelatin hydrogels were compared. After three weeks, only chick muscle tissues remained stably adhered to hydrogels and exhibited progressive increases in myogenic index and stress generation, approaching values generated by native muscle tissue. After three weeks of co-culture with hiPSC-derived motor neurons, engineered chick muscle tissues formed NMJs with increasing co-localization of pre- and postsynaptic markers as well as increased frequency and magnitude of synaptic activity, surpassing structural and functional maturity of previous in vitro models. Engineered chick muscle tissues also demonstrated increased expression of genes related to sarcomere maturation and innervation over time, revealing new insights into the molecular pathways that likely contribute to enhanced NMJ formation. These approaches for engineering advanced neuromuscular tissues with relatively mature NMJs and interrogating their structure and function have many applications in neuromuscular disease modeling and drug development.
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Affiliation(s)
- Jeffrey W. Santoso
- Laboratory for Living Systems Engineering, Department of Biomedical Engineering, USC Viterbi School of Engineering, University of Southern California, Los Angeles, California 90089, USA
| | - Xiling Li
- Department of Biological Sciences, Dornsife College of Arts and Letters, University of Southern California, Los Angeles, California 90089, USA
| | - Divya Gupta
- Laboratory for Living Systems Engineering, Department of Biomedical Engineering, USC Viterbi School of Engineering, University of Southern California, Los Angeles, California 90089, USA
| | - Gio C. Suh
- Laboratory for Living Systems Engineering, Department of Biomedical Engineering, USC Viterbi School of Engineering, University of Southern California, Los Angeles, California 90089, USA
| | - Eric Hendricks
- Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine of USC, University of Southern California, Los Angeles, California 90033, USA
| | - Shaoyu Lin
- Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine of USC, University of Southern California, Los Angeles, California 90033, USA
| | - Sarah Perry
- Department of Biological Sciences, Dornsife College of Arts and Letters, University of Southern California, Los Angeles, California 90089, USA
| | - Justin K. Ichida
- Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine of USC, University of Southern California, Los Angeles, California 90033, USA
| | - Dion Dickman
- Department of Biological Sciences, Dornsife College of Arts and Letters, University of Southern California, Los Angeles, California 90089, USA
| | - Megan L. McCain
- Author to whom correspondence should be addressed:. Tel: +1 2138210791. URL:https://livingsystemsengineering.usc.edu
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21
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Towards bioengineered skeletal muscle: recent developments in vitro and in vivo. Essays Biochem 2021; 65:555-567. [PMID: 34342361 DOI: 10.1042/ebc20200149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/07/2021] [Accepted: 07/13/2021] [Indexed: 12/11/2022]
Abstract
Skeletal muscle is a functional tissue that accounts for approximately 40% of the human body mass. It has remarkable regenerative potential, however, trauma and volumetric muscle loss, progressive disease and aging can lead to significant muscle loss that the body cannot recover from. Clinical approaches to address this range from free-flap transfer for traumatic events involving volumetric muscle loss, to myoblast transplantation and gene therapy to replace muscle loss due to sarcopenia and hereditary neuromuscular disorders, however, these interventions are often inadequate. The adoption of engineering paradigms, in particular materials engineering and materials/tissue interfacing in biology and medicine, has given rise to the rapidly growing, multidisciplinary field of bioengineering. These methods have facilitated the development of new biomaterials that sustain cell growth and differentiation based on bionic biomimicry in naturally occurring and synthetic hydrogels and polymers, as well as additive fabrication methods to generate scaffolds that go some way to replicate the structural features of skeletal muscle. Recent advances in biofabrication techniques have resulted in significant improvements to some of these techniques and have also offered promising alternatives for the engineering of living muscle constructs ex vivo to address the loss of significant areas of muscle. This review highlights current research in this area and discusses the next steps required towards making muscle biofabrication a clinical reality.
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22
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Prox J, Seicol B, Qi H, Argall A, Araya N, Behnke N, Guo L. Toward living neuroprosthetics: developing a biological brain pacemaker as a living neuromodulatory implant for improving parkinsonian symptoms. J Neural Eng 2021; 18. [PMID: 34010821 DOI: 10.1088/1741-2552/ac02dd] [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: 10/27/2020] [Accepted: 05/19/2021] [Indexed: 12/21/2022]
Abstract
Objective.Therapeutic intervention for Parkinson's disease (PD) via deep brain stimulation (DBS) represents the current paradigm for managing the advanced stages of the disease in patients when treatment with pharmaceuticals becomes inadequate. Although DBS is the prevailing therapy in these cases, the overall effectiveness and reliability of DBS can be diminished over time due to hardware complications and biocompatibility issues with the electronic implants. To achieve a lifetime solution, we envision that the next generation of neural implants will be entirely 'biological' and 'autologous', both physically and functionally. Thus, in this study, we set forth toward developing a biological brain pacemaker for treating PD. Our focus is to investigate engineering strategies for creating a multicellular biological circuit that integrates innate biological design and function while incorporating principles of neuromodulation to create a biological mechanism for delivering high-frequency stimulation with cellular specificity.Approach.We engineer a 3D multicellular circuit design built entirely from biological and biocompatible components using established tissue engineering protocols to demonstrate the feasibility of creating a living neural implant. Furthermore, using 2D co-culture systems, we investigate the physiologically relevant parameters that would be necessary to further develop a therapeutic benefit of high-frequency stimulation with cellular specificity within our construct design.Main results.Our results demonstrate the feasibility of fabricating a 3D multicellular circuit device in an implantable form. Furthermore, we show we can organize cellular materials to create potential functional connections in normal physiological conditions, thus laying down the foundation of designing a high-frequency pacing system for selective and controlled therapeutic neurostimulation.Significance.The findings from this study may lead to the future development of autologous living neural implants that both circumvent the issues inherent in electronic neural implants and form more biocompatible devices with lifelong robustness to repair and restore motor functions, with the ultimate benefit for patients with PD.
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Affiliation(s)
- Jordan Prox
- Biomedical Sciences Graduate Program, The Ohio State University, Columbus, OH, United States of America
| | - Benjamin Seicol
- Department of Neuroscience, The Ohio State University, Columbus, OH, United States of America
| | - Hao Qi
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, United States of America
| | - Aaron Argall
- Biomedical Sciences Graduate Program, The Ohio State University, Columbus, OH, United States of America
| | - Neway Araya
- Department of Neuroscience, The Ohio State University, Columbus, OH, United States of America
| | - Nicholas Behnke
- Department of Food, Agricultural and Biological Engineering, The Ohio State University, Columbus, OH, United States of America
| | - Liang Guo
- Department of Electrical and Computer Engineering, The Ohio State University, Columbus, OH, United States of America
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23
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Alarcin E, Bal-Öztürk A, Avci H, Ghorbanpoor H, Dogan Guzel F, Akpek A, Yesiltas G, Canak-Ipek T, Avci-Adali M. Current Strategies for the Regeneration of Skeletal Muscle Tissue. Int J Mol Sci 2021; 22:5929. [PMID: 34072959 PMCID: PMC8198586 DOI: 10.3390/ijms22115929] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/21/2021] [Accepted: 05/26/2021] [Indexed: 12/11/2022] Open
Abstract
Traumatic injuries, tumor resections, and degenerative diseases can damage skeletal muscle and lead to functional impairment and severe disability. Skeletal muscle regeneration is a complex process that depends on various cell types, signaling molecules, architectural cues, and physicochemical properties to be successful. To promote muscle repair and regeneration, various strategies for skeletal muscle tissue engineering have been developed in the last decades. However, there is still a high demand for the development of new methods and materials that promote skeletal muscle repair and functional regeneration to bring approaches closer to therapies in the clinic that structurally and functionally repair muscle. The combination of stem cells, biomaterials, and biomolecules is used to induce skeletal muscle regeneration. In this review, we provide an overview of different cell types used to treat skeletal muscle injury, highlight current strategies in biomaterial-based approaches, the importance of topography for the successful creation of functional striated muscle fibers, and discuss novel methods for muscle regeneration and challenges for their future clinical implementation.
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Affiliation(s)
- Emine Alarcin
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Marmara University, 34854 Istanbul, Turkey;
| | - Ayca Bal-Öztürk
- Department of Analytical Chemistry, Faculty of Pharmacy, Istinye University, 34010 Istanbul, Turkey;
- Department of Stem Cell and Tissue Engineering, Institute of Health Sciences, Istinye University, 34010 Istanbul, Turkey
| | - Hüseyin Avci
- Department of Metallurgical and Materials Engineering, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey;
- Cellular Therapy and Stem Cell Research Center, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey
- AvciBio Research Group, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey;
- Translational Medicine Research and Clinical Center, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey
| | - Hamed Ghorbanpoor
- AvciBio Research Group, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey;
- Department of Biomedical Engineering, Ankara Yildirim Beyazit University, 06010 Ankara, Turkey;
- Department of Biomedical Engineering, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey
| | - Fatma Dogan Guzel
- Department of Biomedical Engineering, Ankara Yildirim Beyazit University, 06010 Ankara, Turkey;
| | - Ali Akpek
- Department of Bioengineering, Gebze Technical University, 41400 Gebze, Turkey; (A.A.); (G.Y.)
| | - Gözde Yesiltas
- Department of Bioengineering, Gebze Technical University, 41400 Gebze, Turkey; (A.A.); (G.Y.)
| | - Tuba Canak-Ipek
- Department of Thoracic and Cardiovascular Surgery, University Hospital Tuebingen, Calwerstraße 7/1, 72076 Tuebingen, Germany;
| | - Meltem Avci-Adali
- Department of Thoracic and Cardiovascular Surgery, University Hospital Tuebingen, Calwerstraße 7/1, 72076 Tuebingen, Germany;
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Allan SJ, Ellis MJ, De Bank PA. Decellularized grass as a sustainable scaffold for skeletal muscle tissue engineering. J Biomed Mater Res A 2021; 109:2471-2482. [PMID: 34057281 DOI: 10.1002/jbm.a.37241] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 05/19/2021] [Accepted: 05/20/2021] [Indexed: 11/07/2022]
Abstract
Scaffold materials suitable for the scale-up and subsequent commercialization of tissue engineered products should ideally be cost effective and accessible. For the in vitro culture of certain adherent cells, synthetic fabrication techniques are often employed to produce micro- or nano-patterned substrates to influence cell attachment, morphology, and alignment via the mechanism of contact guidance. Here we present a natural scaffold, in the form of decellularized amenity grass, which retains its natural striated topography and supports the attachment, proliferation, alignment and differentiation of murine C2C12 myoblasts, without the need for additional functionalization. This presents an inexpensive, sustainable scaffold material and structure for tissue engineering applications capable of influencing cell alignment, a desired property for the culture of skeletal muscle and other anisotropic tissues.
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Affiliation(s)
- Scott J Allan
- EPSRC Centre for Doctoral Training, Centre for Sustainable Chemical Technologies, University of Bath, Bath, UK
- Department of Chemical Engineering, University of Bath, Bath, UK
| | - Marianne J Ellis
- Department of Chemical Engineering, University of Bath, Bath, UK
| | - Paul A De Bank
- Department of Pharmacy & Pharmacology and Centre for Therapeutic Innovation, University of Bath, Bath, UK
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Gao L, Akhtar MU, Yang F, Ahmad S, He J, Lian Q, Cheng W, Zhang J, Li D. Recent progress in engineering functional biohybrid robots actuated by living cells. Acta Biomater 2021; 121:29-40. [PMID: 33285324 DOI: 10.1016/j.actbio.2020.12.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/25/2020] [Accepted: 12/01/2020] [Indexed: 01/13/2023]
Abstract
Living cells are highly scalable biological actuators found in nature, and they are efficient technological solutions to actuate robotic systems. Recent advancements in biofabrication and tissue engineering have bridged the gap to interface muscle cells with artificial technology. In this review, we summarize the recent progress in engineering the attributes of individual components for the development of fully functional biohybrid robots. First, we address the fabrication of biological actuators for biohybrid robots with muscle cells and tissues, including cardiomyocytes, skeletal muscles, insect tissues, and neuromuscular tissues, in well-organized pattern of 2D sheets and 3D constructs. Next, we discuss the performance of biohybrid robots for various biomimetic tasks such as swimming, walking, gripping, and pumping. Finally, the challenges and future directions in the development of biohybrid robots are described from different viewpoints of living material engineering, multiscale modeling, 3D printing for manufacturing, and multifunctional robotic system development.
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26
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Rivera-Tarazona LK, Campbell ZT, Ware TH. Stimuli-responsive engineered living materials. SOFT MATTER 2021; 17:785-809. [PMID: 33410841 DOI: 10.1039/d0sm01905d] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Stimuli-responsive materials are able to undergo controllable changes in materials properties in response to external cues. Increasing efforts have been directed towards building materials that mimic the responsive nature of biological systems. Nevertheless, limitations remain surrounding the way these synthetic materials interact and respond to their environment. In particular, it is difficult to synthesize synthetic materials that respond with specificity to poorly differentiated (bio)chemical and weak physical stimuli. The emerging area of engineered living materials (ELMs) includes composites that combine living cells and synthetic materials. ELMs have yielded promising advances in the creation of stimuli-responsive materials that respond with diverse outputs in response to a broad array of biochemical and physical stimuli. This review describes advances made in the genetic engineering of the living component and the processing-property relationships of stimuli-responsive ELMs. Finally, the implementation of stimuli-responsive ELMs as environmental sensors, biomedical sensors, drug delivery vehicles, and soft robots is discussed.
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Affiliation(s)
- Laura K Rivera-Tarazona
- Department of Biomedical Engineering, Texas A&M University, 101 Bizzell Street, College Station, TX 77843, USA.
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Gupta D, Santoso JW, McCain ML. Characterization of Gelatin Hydrogels Cross-Linked with Microbial Transglutaminase as Engineered Skeletal Muscle Substrates. Bioengineering (Basel) 2021; 8:bioengineering8010006. [PMID: 33418892 PMCID: PMC7825108 DOI: 10.3390/bioengineering8010006] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/18/2020] [Accepted: 12/30/2020] [Indexed: 12/12/2022] Open
Abstract
Engineered in vitro models of skeletal muscle are essential for efficiently screening drug safety and efficacy. However, conventional culture substrates poorly replicate physical features of native muscle and do not support long-term culture, which limits tissue maturity. Micromolded gelatin hydrogels cross-linked with microbial transglutaminase (gelatin-MTG hydrogels) have previously been shown to induce C21C2 myotube alignment and improve culture longevity. However, several properties of gelatin-MTG hydrogels have not been systematically characterized, such as changes in elastic modulus during incubation in culture-like conditions and their ability to support sarcomere maturation. In this study, various gelatin-MTG hydrogels were fabricated and incubated in ambient or culture-like conditions. Elastic modulus, mass, and transmittance were measured over a one- or two-week period. Compared to hydrogels in phosphate buffered saline (PBS) or ambient air, hydrogels in Dulbecco’s Modified Eagle Medium (DMEM) and 5% CO2 demonstrated the most stable elastic modulus. A subset of gelatin-MTG hydrogels was micromolded and seeded with C2C12 or primary chick myoblasts, which aligned and fused into multinucleated myotubes with relatively mature sarcomeres. These data are important for fabricating gelatin-MTG hydrogels with predictable and stable mechanical properties and highlight their advantages as culture substrates for engineering relatively mature and stable muscle tissues.
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Affiliation(s)
- Divya Gupta
- Laboratory for Living Systems Engineering, Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, 1042 Downey Way, DRB 140, Los Angeles, CA 90089, USA; (D.G.); (J.W.S.)
| | - Jeffrey W. Santoso
- Laboratory for Living Systems Engineering, Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, 1042 Downey Way, DRB 140, Los Angeles, CA 90089, USA; (D.G.); (J.W.S.)
| | - Megan L. McCain
- Laboratory for Living Systems Engineering, Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, 1042 Downey Way, DRB 140, Los Angeles, CA 90089, USA; (D.G.); (J.W.S.)
- Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine, University of Southern California, 1975 Zonal Ave, Los Angeles, CA 90033, USA
- Correspondence:
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28
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Besser RR, Bowles AC, Alassaf A, Carbonero D, Maciel R, Saporta M, Agarwal A. A Chemically Defined Common Medium for Culture of C2C12 Skeletal Muscle and Human Induced Pluripotent Stem Cell Derived Spinal Spheroids. Cell Mol Bioeng 2020; 13:605-619. [PMID: 33281990 PMCID: PMC7704992 DOI: 10.1007/s12195-020-00624-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 06/03/2020] [Indexed: 01/14/2023] Open
Abstract
INTRODUCTION Multicellular platforms and linked multi organ on chip devices are powerful tools for drug discovery, and basic mechanistic studies. Often, a critical constraint is defining a culture medium optimal for all cells present in the system. In this study, we focused on the key cells of the neuromuscular junction i.e., skeletal muscle and motor neurons. METHODS Formulation of a chemically defined medium for the co-culture of C2C12 skeletal muscle cells and human induced pluripotent stem cell (hiPSC) derived spinal spheroids (SpS) was optimized. C2C12 cells in 10 experimental media conditions and 2 topographies were evaluated over a 14-day maturation period to determine the ideal medium formulation for skeletal muscle tissue development. RESULTS During early maturation, overexpression of genes for myogenesis and myopathy was observed for several media conditions, corresponding to muscle delamination and death. Together, we identified 3 media formulations that allowed for more controlled differentiation, healthier muscle tissue, and long-term culture duration. This evidence was then used to select media formulations to culture SpS and subsequently assessed axonal growth. As axonal growth in SpS cultures was comparable in all selected media conditions, our data suggest that the neuronal basal medium with no added supplements is the ideal medium formulation for both cell types. CONCLUSIONS Optimization using both topographical cues and culture media formulations provides a comprehensive analyses of culture conditions that are vital to future applications for in vitro NMJ models.
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Affiliation(s)
- Rachel R. Besser
- Department of Biomedical Engineering, DJTMF Biomedical Nanotechnology Institute, University of Miami, 1251 Memorial Dr, MEA 203, Coral Gables, FL 33146 USA
| | - Annie C. Bowles
- Department of Biomedical Engineering, DJTMF Biomedical Nanotechnology Institute, University of Miami, 1251 Memorial Dr, MEA 203, Coral Gables, FL 33146 USA
| | - Ahmad Alassaf
- Department of Biomedical Engineering, DJTMF Biomedical Nanotechnology Institute, University of Miami, 1251 Memorial Dr, MEA 203, Coral Gables, FL 33146 USA
- Department of Medical Equipment Technology, College of Applied Medical Sciences, Majmaah University, Al-Majmaah, 11952 Saudi Arabia
| | - Daniel Carbonero
- Department of Biomedical Engineering, DJTMF Biomedical Nanotechnology Institute, University of Miami, 1251 Memorial Dr, MEA 203, Coral Gables, FL 33146 USA
| | - Renata Maciel
- Department of Neurology, University of Miami Miller School of Medicine, 1120 NW 14th St, Suite 1310, Miami, FL 33136 USA
| | - Mario Saporta
- Department of Neurology, University of Miami Miller School of Medicine, 1120 NW 14th St, Suite 1310, Miami, FL 33136 USA
| | - Ashutosh Agarwal
- Department of Biomedical Engineering, DJTMF Biomedical Nanotechnology Institute, University of Miami, 1251 Memorial Dr, MEA 203, Coral Gables, FL 33146 USA
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29
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Nagashima T, Hadiwidjaja S, Ohsumi S, Murata A, Hisada T, Kato R, Okada Y, Honda H, Shimizu K. In Vitro Model of Human Skeletal Muscle Tissues with Contractility Fabricated by Immortalized Human Myogenic Cells. ACTA ACUST UNITED AC 2020; 4:e2000121. [DOI: 10.1002/adbi.202000121] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 10/04/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Takunori Nagashima
- Department of Biomolecular Engineering Graduate School of Engineering Nagoya University Nagoya 464‐8603 Japan
| | - Stacy Hadiwidjaja
- Department of Biomolecular Engineering Graduate School of Engineering Nagoya University Nagoya 464‐8603 Japan
| | - Saki Ohsumi
- Department of Biomolecular Engineering Graduate School of Engineering Nagoya University Nagoya 464‐8603 Japan
| | - Akari Murata
- Department of Biomolecular Engineering Graduate School of Engineering Nagoya University Nagoya 464‐8603 Japan
| | - Takumi Hisada
- Department of Basic Medicinal Sciences Graduate School of Pharmaceutical Sciences Nagoya University Nagoya 464‐8601 Japan
| | - Ryuji Kato
- Department of Basic Medicinal Sciences Graduate School of Pharmaceutical Sciences Nagoya University Nagoya 464‐8601 Japan
| | - Yohei Okada
- Department of Neurology Aichi Medical University School of Medicine Aichi 480‐1195 Japan
| | - Hiroyuki Honda
- Department of Biomolecular Engineering Graduate School of Engineering Nagoya University Nagoya 464‐8603 Japan
| | - Kazunori Shimizu
- Department of Biomolecular Engineering Graduate School of Engineering Nagoya University Nagoya 464‐8603 Japan
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30
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Abstract
Organs-on-chips are broadly defined as microfabricated surfaces or devices designed to engineer cells into microscale tissues with native-like features and then extract physiologically relevant readouts at scale. Because they are generally compatible with patient-derived cells, these technologies can address many of the human relevance limitations of animal models. As a result, organs-on-chips have emerged as a promising new paradigm for patient-specific disease modeling and drug development. Because neuromuscular diseases span a broad range of rare conditions with diverse etiology and complex pathophysiology, they have been especially challenging to model in animals and thus are well suited for organ-on-chip approaches. In this Review, we first briefly summarize the challenges in neuromuscular disease modeling with animal models. Next, we describe a variety of existing organ-on-chip approaches for neuromuscular tissues, including a survey of cell sources for both muscle and nerve, and two- and three-dimensional neuromuscular tissue-engineering techniques. Although researchers have made tremendous advances in modeling neuromuscular diseases on a chip, the remaining challenges in cell sourcing, cell maturity, tissue assembly and readout capabilities limit their integration into the drug development pipeline today. However, as the field advances, models of healthy and diseased neuromuscular tissues on a chip, coupled with animal models, have vast potential as complementary tools for modeling multiple aspects of neuromuscular diseases and identifying new therapeutic strategies. Summary: Modeling neuromuscular diseases is challenging due to their complex etiology and pathophysiology. Here, we review the cell sources and tissue-engineering procedures that are being integrated as emerging neuromuscular disease models.
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Affiliation(s)
- Jeffrey W Santoso
- Laboratory for Living Systems Engineering, Department of Biomedical Engineering, USC Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Megan L McCain
- Laboratory for Living Systems Engineering, Department of Biomedical Engineering, USC Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA .,Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA 90033, USA
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31
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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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Morimoto Y, Onoe H, Takeuchi S. Biohybrid robot with skeletal muscle tissue covered with a collagen structure for moving in air. APL Bioeng 2020; 4:026101. [PMID: 32266324 PMCID: PMC7127912 DOI: 10.1063/1.5127204] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 02/25/2020] [Indexed: 11/17/2022] Open
Abstract
Biohybrid robots composed of biological and synthetic components have been introduced to reconstruct biological functions in mechanical systems and obtain better understanding of biological designs. For example, biohybrid robots powered by skeletal muscle tissue have already succeeded in performing various movements. However, it has been difficult for the conventional biohybrid robots to actuate in air, as the skeletal muscle tissue often dries out in air and is damaged. To overcome this limitation, we propose a biohybrid robot in which the skeletal muscle tissue is encapsulated in a collagen structure to maintain the required humidity conditions when operated in air. As the skeletal muscle tissue maintains high cell viability and contractility, even after encapsulation within the collagen structure, the biohybrid robot can move in air through contractions of the skeletal muscle tissue. To demonstrate the applicability of the developed biohybrid robot, we demonstrate its use in object manipulation. In addition, to prove its capability of functionality enhancement, we show that the biohybrid robot can actuate for a long term when perfusable tubes are set inside the collagen structure; it can actuate even while culturing cells on its surface. The developed biohybrid robot composed of skeletal muscle tissue and collagen structure can be employed within platforms used to replicate various motions of land animals.
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Cheng YW, Shiwarski DJ, Ball RL, Whitehead KA, Feinberg AW. Engineering Aligned Skeletal Muscle Tissue Using Decellularized Plant-Derived Scaffolds. ACS Biomater Sci Eng 2020; 6:3046-3054. [PMID: 33463300 DOI: 10.1021/acsbiomaterials.0c00058] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To achieve organization and function, engineered tissues require a scaffold that supports cell adhesion, alignment, growth, and differentiation. For skeletal muscle tissue engineering, decellularization has been an approach for fabricating 3D scaffolds that retain biological architecture. While many decellularization approaches are focused on utilizing animal muscle as the starting material, decellularized plants are a potential source of highly structured cellulose-rich scaffolds. Here, we assessed the potential for a variety of decellularized plant scaffolds to promote mouse and human muscle cell alignment and differentiation. After decellularizing a range of fruits and vegetables, we identified the green-onion scaffold to have appropriate surface topography for generating highly confluent and aligned C2C12 and human skeletal muscle cells (HSMCs). The topography of the green-onion cellulose scaffold contained a repeating pattern of grooves that are approximately 20 μm wide by 10 μm deep. The outer white section of the green onion had a microstructure that guided C2C12 cell differentiation into aligned myotubes. Quantitative analysis of C2C12 and HSMC alignment revealed an almost complete anisotropic organization compared to 2D isotropic controls. Our results demonstrate that the decellularized green onion cellulose scaffolds, particularly from the outer white bulb segment, provide a simple and low-cost substrate to engineer aligned human skeletal muscle.
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Gholobova D, Terrie L, Gerard M, Declercq H, Thorrez L. Vascularization of tissue-engineered skeletal muscle constructs. Biomaterials 2019; 235:119708. [PMID: 31999964 DOI: 10.1016/j.biomaterials.2019.119708] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 12/10/2019] [Accepted: 12/18/2019] [Indexed: 12/26/2022]
Abstract
Skeletal muscle tissue can be created in vitro by tissue engineering approaches, based on differentiation of muscle stem cells. Several approaches exist and generally result in three dimensional constructs composed of multinucleated myofibers to which we refer as myooids. Engineering methods date back to 3 decades ago and meanwhile a wide range of cell types and scaffold types have been evaluated. Nevertheless, in most approaches, myooids remain very small to allow for diffusion-mediated nutrient supply and waste product removal, typically less than 1 mm thick. One of the shortcomings of current in vitro skeletal muscle organoid development is the lack of a functional vascular structure, thus limiting the size of myooids. This is a challenge which is nowadays applicable to almost all organoid systems. Several approaches to obtain a vascular structure within myooids have been proposed. The purpose of this review is to give a concise overview of these approaches.
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Affiliation(s)
- D Gholobova
- Tissue Engineering Lab, Department of Development and Regeneration, KU Leuven, E. Sabbelaan 53, 8500, Kortrijk, Belgium
| | - L Terrie
- Tissue Engineering Lab, Department of Development and Regeneration, KU Leuven, E. Sabbelaan 53, 8500, Kortrijk, Belgium
| | - M Gerard
- Tissue Engineering Lab, Department of Development and Regeneration, KU Leuven, E. Sabbelaan 53, 8500, Kortrijk, Belgium
| | - H Declercq
- Tissue Engineering Lab, Department of Development and Regeneration, KU Leuven, E. Sabbelaan 53, 8500, Kortrijk, Belgium
| | - L Thorrez
- Tissue Engineering Lab, Department of Development and Regeneration, KU Leuven, E. Sabbelaan 53, 8500, Kortrijk, Belgium.
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35
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Clegg JR, Wagner AM, Shin SR, Hassan S, Khademhosseini A, Peppas NA. Modular Fabrication of Intelligent Material-Tissue Interfaces for Bioinspired and Biomimetic Devices. PROGRESS IN MATERIALS SCIENCE 2019; 106:100589. [PMID: 32189815 PMCID: PMC7079701 DOI: 10.1016/j.pmatsci.2019.100589] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
One of the goals of biomaterials science is to reverse engineer aspects of human and nonhuman physiology. Similar to the body's regulatory mechanisms, such devices must transduce changes in the physiological environment or the presence of an external stimulus into a detectable or therapeutic response. This review is a comprehensive evaluation and critical analysis of the design and fabrication of environmentally responsive cell-material constructs for bioinspired machinery and biomimetic devices. In a bottom-up analysis, we begin by reviewing fundamental principles that explain materials' responses to chemical gradients, biomarkers, electromagnetic fields, light, and temperature. Strategies for fabricating highly ordered assemblies of material components at the nano to macro-scales via directed assembly, lithography, 3D printing and 4D printing are also presented. We conclude with an account of contemporary material-tissue interfaces within bioinspired and biomimetic devices for peptide delivery, cancer theranostics, biomonitoring, neuroprosthetics, soft robotics, and biological machines.
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Affiliation(s)
- John R Clegg
- Department of Biomedical Engineering, the University of Texas at Austin, Austin, Texas, USA
| | - Angela M Wagner
- McKetta Department of Chemical Engineering, the University of Texas at Austin, Austin, Texas, USA
| | - Su Ryon Shin
- Division of Engineering in Medicine, Department of Medicine, Brigham Women's Hospital, Harvard Medical School, Cambridge, Massachusetts, USA
| | - Shabir Hassan
- Division of Engineering in Medicine, Department of Medicine, Brigham Women's Hospital, Harvard Medical School, Cambridge, Massachusetts, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ali Khademhosseini
- Center for Minimally Invasive Therapeutics (C-MIT), University of California - Los Angeles, Los Angeles, California, USA
- California NanoSystems Institute (CNSI), University of California - Los Angeles, Los Angeles, California, USA
- Department of Bioengineering, University of California - Los Angeles, Los Angeles, California, USA
- Department of Bioindustrial Technologies, College of Animal Bioscience and Technology, Konkuk University, Seoul, Republic of Korea
| | - Nicholas A Peppas
- Department of Biomedical Engineering, the University of Texas at Austin, Austin, Texas, USA
- McKetta Department of Chemical Engineering, the University of Texas at Austin, Austin, Texas, USA
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, the University of Texas at Austin, Austin, Texas, USA
- Department of Surgery and Perioperative Care, Dell Medical School, the University of Texas at Austin, Austin, Texas, USA
- Department of Pediatrics, Dell Medical School, the University of Texas at Austin, Austin, Texas, USA
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, the University of Texas at Austin, Austin, Texas, USA
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36
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A customizable microfluidic platform for medium-throughput modeling of neuromuscular circuits. Biomaterials 2019; 225:119537. [PMID: 31614290 PMCID: PMC7294901 DOI: 10.1016/j.biomaterials.2019.119537] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 10/02/2019] [Accepted: 10/07/2019] [Indexed: 01/27/2023]
Abstract
Neuromuscular circuits (NMCs) are vital for voluntary movement, and effective models of NMCs are needed to understand the pathogenesis of, as well as to identify effective treatments for, multiple diseases, including Duchenne’s muscular dystrophy and amyotrophic lateral sclerosis. Microfluidics are ideal for recapitulating the central and peripheral compartments of NMCs, but myotubes often detach before functional NMCs are formed. In addition, microfluidic systems are often limited to a single experimental unit, which significantly limits their application in disease modeling and drug discovery. Here, we developed a microfluidic platform (MFP) containing over 100 experimental units, making it suitable for medium-throughput applications. To overcome detachment, we incorporated a reactive polymer surface allowing customization of the environment to culture different cell types. Using this approach, we identified conditions that enable long-term co-culture of human motor neurons and myotubes differentiated from human induced pluripotent stem cells inside our MFP. Optogenetics demonstrated the formation of functional NMCs. Furthermore, we developed a novel application of the rabies tracing assay to efficiently identify NMCs in our MFP. Therefore, our MFP enables large-scale generation and quantification of functional NMCs for disease modeling and pharmacological drug targeting.
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37
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Kwong HK, Huang Y, Bao Y, Lam ML, Chen TH. Remnant Effects of Culture Density on Cell Chirality After Reseeding. ACS Biomater Sci Eng 2019; 5:3944-3953. [DOI: 10.1021/acsbiomaterials.8b01364] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
| | | | | | - Miu Ling Lam
- CityU Shenzhen Research Institute, Shenzhen 518057, China
| | - Ting-Hsuan Chen
- CityU Shenzhen Research Institute, Shenzhen 518057, China
- State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200086, China
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38
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Del Carmen Ortuño-Costela M, García-López M, Cerrada V, Gallardo ME. iPSCs: A powerful tool for skeletal muscle tissue engineering. J Cell Mol Med 2019; 23:3784-3794. [PMID: 30933431 PMCID: PMC6533516 DOI: 10.1111/jcmm.14292] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 03/05/2019] [Accepted: 03/08/2019] [Indexed: 12/15/2022] Open
Abstract
Both volumetric muscle loss (VML) and muscle degenerative diseases lead to an important decrease in skeletal muscle mass, condition that nowadays lacks an optimal treatment. This issue has driven towards an increasing interest in new strategies in tissue engineering, an emerging field that can offer very promising approaches. In addition, the discovery of induced pluripotent stem cells (iPSCs) has completely revolutionized the actual view of personalized medicine, and their utilization in skeletal muscle tissue engineering could, undoubtedly, add myriad benefits. In this review, we want to provide a general vision of the basic aspects to consider when engineering skeletal muscle tissue using iPSCs. Specifically, we will focus on the three main pillars of tissue engineering: the scaffold designing, the selection of the ideal cell source and the addition of factors that can enhance the resemblance with the native tissue.
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Affiliation(s)
- María Del Carmen Ortuño-Costela
- Departamento de Bioquímica, Facultad de Medicina, Instituto de Investigaciones Biomédicas "Alberto Sols", Universidad Autónoma de Madrid, Spain, (UAM-CSIC), Madrid, Spain.,Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Madrid, Spain.,Grupo de Investigación, Traslacional con células iPS, Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Marta García-López
- Grupo de Investigación, Traslacional con células iPS, Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Victoria Cerrada
- Grupo de Investigación, Traslacional con células iPS, Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Madrid, Spain
| | - María Esther Gallardo
- Grupo de Investigación, Traslacional con células iPS, Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Madrid, Spain.,Centro de Investigación Biomédica en Red (CIBERER), Madrid, Spain
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39
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Hasebe A, Suematsu Y, Takeoka S, Mazzocchi T, Vannozzi L, Ricotti L, Fujie T. Biohybrid Actuators Based on Skeletal Muscle-Powered Microgrooved Ultrathin Films Consisting of Poly(styrene-block-butadiene-block-styrene). ACS Biomater Sci Eng 2019; 5:5734-5743. [DOI: 10.1021/acsbiomaterials.8b01550] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Arihiro Hasebe
- Graduate School of Advanced Science and Engineering, Waseda University, TWIns, 2-2, Sinjuku-ku, Tokyo 162-8480, Japan
| | - Yoshitaka Suematsu
- Graduate School of Advanced Science and Engineering, Waseda University, TWIns, 2-2, Sinjuku-ku, Tokyo 162-8480, Japan
| | - Shinji Takeoka
- Graduate School of Advanced Science and Engineering, Waseda University, TWIns, 2-2, Sinjuku-ku, Tokyo 162-8480, Japan
| | - Tommaso Mazzocchi
- The BioRobotics Institute, Scuola Superiore Sant’Anna, Viale Rinaldo Piaggio 34, 56025 Pontedera, Pisa, Italy
| | - Lorenzo Vannozzi
- The BioRobotics Institute, Scuola Superiore Sant’Anna, Viale Rinaldo Piaggio 34, 56025 Pontedera, Pisa, Italy
| | - Leonardo Ricotti
- The BioRobotics Institute, Scuola Superiore Sant’Anna, Viale Rinaldo Piaggio 34, 56025 Pontedera, Pisa, Italy
| | - Toshinori Fujie
- Waseda Institute for Advanced Study, Waseda University, TWIns, 2-2, Sinjuku-ku, Tokyo 162-8480, Japan
- Japan Science and Technology Agency, PRESTO, 4-1-8, Honcho,
Kawaguchi-shi, Saitama 332-0012, Japan
- School of Life Science and Technology, Tokyo Institute of Technology, B-50, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan
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40
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Morimoto Y, Onoe H, Takeuchi S. Biohybrid device with antagonistic skeletal muscle tissue for measurement of contractile force. Adv Robot 2019. [DOI: 10.1080/01691864.2019.1567382] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yuya Morimoto
- Center for International Research on Integrative Biomedical Systems (CIBiS), Institute of Industrial Science (IIS), The University of Tokyo, Tokyo, Japan
| | - Hiroaki Onoe
- Center for International Research on Integrative Biomedical Systems (CIBiS), Institute of Industrial Science (IIS), The University of Tokyo, Tokyo, Japan
- Department of Mechanical Engineering, Keio University, Kanagawa, Japan
| | - Shoji Takeuchi
- Center for International Research on Integrative Biomedical Systems (CIBiS), Institute of Industrial Science (IIS), The University of Tokyo, Tokyo, Japan
- International Research Center for Neurointelligence (WPI-IRCN), The University of Tokyo Institutes for Advanced Study (UTIAS), The University of Tokyo, Tokyo, Japan
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41
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Choi YJ, Park SJ, Yi HG, Lee H, Kim DS, Cho DW. Muscle-derived extracellular matrix on sinusoidal wavy surfaces synergistically promotes myogenic differentiation and maturation. J Mater Chem B 2018; 6:5530-5539. [PMID: 32254963 DOI: 10.1039/c8tb01475b] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The generation of physiologically aligned multinucleated myotubes is critical in the fabrication of functional engineered skeletal muscle. Although micro-/nano-topographical contact guidance, such as groove/ridge structures, has induced the alignment of muscle fibers by providing cells with extracellular matrix (ECM) topography, the complex biochemical microenvironment of the ECM cannot be recapitulated. Here, we report the enhancement of myogenic differentiation and maturation using muscle decellularized ECM (mdECM) and sinusoidal wavy surfaces, which provided a biochemical microenvironment and microscale contact guidance, respectively. Sinusoidal wavy polystyrene surfaces with wavelengths of 20, 40, and 80 μm were fabricated by a deep X-ray lithography-based process. The mdECM was prepared by decellularization of porcine tibialis anterior skeletal muscle. An mdECM coating significantly improved the surface wettability of polystyrene substrates and exhibited higher seeding efficiency, cell viability, and proliferation compared with collagen- and non-coating cases. The sinusoidal wavy surfaces induced well-aligned myotubes and showed significantly enhanced formation of myotubes and myogenic differentiation when the surface was coated with mdECM. Particularly, there was an approximately 1.5-2 fold improvement in morphological analysis and gene expression for mdECM-compared to non-coated sinusoidal wavy surfaces. These results suggest that the consideration of both topographical and biochemical environmental cues can generate a highly mimicked ECM environment, thereby providing cells with a synergistic effect on myogenic differentiation and maturation. The outcome of this study will be useful in developing of functional engineered muscle for application in tissue regeneration or a high-throughput in vitro model for drug screening.
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Affiliation(s)
- Yeong-Jin Choi
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology (POSTECH), Pohang, Kyungbuk 37673, Korea
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42
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McClure MJ, Cohen DJ, Ramey AN, Bivens CB, Mallu S, Isaacs JE, Imming E, Huang YC, Sunwoo M, Schwartz Z, Boyan BD. Decellularized Muscle Supports New Muscle Fibers and Improves Function Following Volumetric Injury. Tissue Eng Part A 2018; 24:1228-1241. [DOI: 10.1089/ten.tea.2017.0386] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Michael J. McClure
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia
| | - David J. Cohen
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia
| | - Allison N. Ramey
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia
| | - Caroline B. Bivens
- Department of School of Art, Virginia Commonwealth University, Richmond, Virginia
| | - Satya Mallu
- Department of Orthopaedic Surgery, Virginia Commonwealth University, Richmond, Virginia
| | - Jonathan E. Isaacs
- Department of Orthopaedic Surgery, Virginia Commonwealth University, Richmond, Virginia
| | - Emily Imming
- MTF Biologics, Musculoskeletal Transplant Foundation, Edison, New Jersey
| | - Yen-Chen Huang
- MTF Biologics, Musculoskeletal Transplant Foundation, Edison, New Jersey
| | - MoonHae Sunwoo
- MTF Biologics, Musculoskeletal Transplant Foundation, Edison, New Jersey
| | - Zvi Schwartz
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia
- Department of Periodontics, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Barbara D. Boyan
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia
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43
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McClure MJ, Clark NM, Schwartz Z, Boyan BD. Platelet-rich plasma and alignment enhance myogenin via ERK mitogen activated protein kinase signaling. ACTA ACUST UNITED AC 2018; 13:055009. [PMID: 29967311 DOI: 10.1088/1748-605x/aad0a7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Volumetric muscle loss is debilitating and involves extensive rehabilitation. One approach to accelerate healing, rehabilitation, and muscle function is to repair damaged skeletal muscle using regenerative medicine strategies. In sports medicine and orthopedics, a common clinical approach is to treat minor to severe musculoskeletal injuries with platelet-rich plasma (PRP) injections. While these types of treatments have become commonplace, there are limited data demonstrating their effectiveness. The goal of this study was to determine the effect of PRP on myoblast gene expression and protein production when incorporated into a polymer fiber. To test this, we generated extracellular matrix mimicking scaffolds using aligned polydioxanone (PDO) fibers containing lyophilized PRP (SmartPReP® 2, Harvest Technologies Corporation, Plymouth, MA). Scaffolds with PRP caused a dose-dependent increase in myogenin and myosin heavy chain but did not affect myogenic differentiation factor-1 (MyoD). Integrin α7β1D decreased and α5β1A did not change in response to PRP scaffolds. ERK inhibition decreased myogenin and increased Myod on the PDO-PRP scaffolds. Taken together, these data suggest that alignment and PRP produce a substrate-dependent, ERK-dependent, and dose-dependent effect on myogenic differentiation.
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Affiliation(s)
- Michael J McClure
- Physical Medicine and Rehabilitation Service, Hunter Holmes McGuire VA Medical Center, Richmond, VA, United States of America. Department of Biomedical Engineering, Virginia Commonwealth University, College of Engineering, Richmond, VA, United States of America
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44
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Fabrication of Micromolded Gelatin Hydrogels for Long-Term Culture of Aligned Skeletal Myotubes. Methods Mol Biol 2018; 1668:147-163. [PMID: 28842908 DOI: 10.1007/978-1-4939-7283-8_11] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
Cultured skeletal myotubes are a powerful in vitro system for identifying mechanisms of skeletal muscle development and disease. However, skeletal myotubes routinely delaminate from conventional culture substrates after approximately 1 week, which significantly hampers their utility for in vitro disease modeling and drug screening. To address this problem, we fabricated micromolded gelatin hydrogels as culture substrates that are more biomimetic than conventional substrates. On micromolded gelatin hydrogels, C2C12 skeletal myoblasts align and differentiate into skeletal myotubes that are stable in culture for multiple weeks. With this protocol, we detail three key steps: (1) Fabrication of micromolded gelatin hydrogels; (2) Culture of mouse C2C12 myoblasts and differentiation into myotubes; and (3) Quantification of myotube morphology. These substrates have many applications for skeletal muscle disease modeling and drug screening over longer time scales.
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45
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Morimoto Y, Onoe H, Takeuchi S. Biohybrid robot powered by an antagonistic pair of skeletal muscle tissues. Sci Robot 2018; 3:3/18/eaat4440. [DOI: 10.1126/scirobotics.aat4440] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 04/30/2018] [Indexed: 12/23/2022]
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46
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Gattazzo F, De Maria C, Rimessi A, Donà S, Braghetta P, Pinton P, Vozzi G, Bonaldo P. Gelatin-genipin-based biomaterials for skeletal muscle tissue engineering. J Biomed Mater Res B Appl Biomater 2018; 106:2763-2777. [PMID: 29412500 DOI: 10.1002/jbm.b.34057] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 11/14/2017] [Accepted: 11/18/2017] [Indexed: 01/03/2023]
Abstract
Skeletal muscle engineering aims at tissue reconstruction to replace muscle loss following traumatic injury or in congenital muscle defects. Skeletal muscle can be engineered by using biodegradable and biocompatible scaffolds that favor myogenic cell adhesion and subsequent tissue organization. In this study, we characterized scaffolds made of gelatin cross-linked with genipin, a natural derived cross-linking agent with low cytotoxicity and high biocompatibility, for tissue engineering of skeletal muscle. We generated gelatin-genipin hydrogels with a stiffness of 13 kPa to reproduce the mechanical properties characteristic of skeletal muscle and we show that their surface can be topographically patterned through soft lithography to drive myogenic cells differentiation and unidirectional orientation. Furthermore, we demonstrate that these biomaterials can be successfully implanted in vivo under dorsal mouse skin, showing good biocompatibility and slow biodegradation rate. Moreover, the grafting of this biomaterial in partially ablated tibialis anterior muscle does not impair muscle regeneration, supporting future applications of gelatin-genipin biomaterials in the field of skeletal muscle tissue repair. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 2763-2777, 2018.
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Affiliation(s)
- Francesca Gattazzo
- Department of Molecular Medicine, University of Padova, Padova, 35131, Italy.,Research Center "E. Piaggio," University of Pisa, Pisa, 56122, Italy
| | - Carmelo De Maria
- Research Center "E. Piaggio," University of Pisa, Pisa, 56122, Italy
| | - Alessandro Rimessi
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, 44121, Italy
| | - Silvia Donà
- Department of Molecular Medicine, University of Padova, Padova, 35131, Italy
| | - Paola Braghetta
- Department of Molecular Medicine, University of Padova, Padova, 35131, Italy
| | - Paolo Pinton
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, 44121, Italy
| | - Giovanni Vozzi
- Research Center "E. Piaggio," University of Pisa, Pisa, 56122, Italy
| | - Paolo Bonaldo
- Department of Molecular Medicine, University of Padova, Padova, 35131, Italy.,CRIBI Biotechnology Center, University of Padova, Padova, 35131, Italy
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47
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Ricotti L, Trimmer B, Feinberg AW, Raman R, Parker KK, Bashir R, Sitti M, Martel S, Dario P, Menciassi A. Biohybrid actuators for robotics: A review of devices actuated by living cells. Sci Robot 2017; 2:2/12/eaaq0495. [PMID: 33157905 DOI: 10.1126/scirobotics.aaq0495] [Citation(s) in RCA: 209] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 11/07/2017] [Indexed: 12/16/2022]
Abstract
Actuation is essential for artificial machines to interact with their surrounding environment and to accomplish the functions for which they are designed. Over the past few decades, there has been considerable progress in developing new actuation technologies. However, controlled motion still represents a considerable bottleneck for many applications and hampers the development of advanced robots, especially at small length scales. Nature has solved this problem using molecular motors that, through living cells, are assembled into multiscale ensembles with integrated control systems. These systems can scale force production from piconewtons up to kilonewtons. By leveraging the performance of living cells and tissues and directly interfacing them with artificial components, it should be possible to exploit the intricacy and metabolic efficiency of biological actuation within artificial machines. We provide a survey of important advances in this biohybrid actuation paradigm.
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Affiliation(s)
- Leonardo Ricotti
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Pontedera, Pisa, Italy.
| | - Barry Trimmer
- Department of Biology, Tufts University, Medford, MA 02153, USA
| | - Adam W Feinberg
- Department of Biomedical Engineering and Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Ritu Raman
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Kevin K Parker
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Rashid Bashir
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Metin Sitti
- Max-Planck Institute for Intelligent Systems, Stuttgart, Germany
| | - Sylvain Martel
- NanoRobotics Laboratory, Department of Computer and Software Engineering, Institute of Biomedical Engineering, Polytechnique Montréal, Montréal, Quebec, Canada
| | - Paolo Dario
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Pontedera, Pisa, Italy
| | - Arianna Menciassi
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Pontedera, Pisa, Italy
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48
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Gong X, Yao J, He H, Zhao X, Liu X, Zhao F, Sun Y, Fan Y. Combination of flow and micropattern alignment affecting flow-resistant endothelial cell adhesion. J Mech Behav Biomed Mater 2017; 74:11-20. [DOI: 10.1016/j.jmbbm.2017.04.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 04/25/2017] [Accepted: 04/27/2017] [Indexed: 11/24/2022]
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49
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Liu X, Liu Y, Zhao F, Hun T, Li S, Wang Y, Sun W, Wang W, Sun Y, Fan Y. Regulation of cell arrangement using a novel composite micropattern. J Biomed Mater Res A 2017; 105:3093-3101. [DOI: 10.1002/jbm.a.36157] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 06/16/2017] [Accepted: 07/07/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Xiaoyi Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering; Beihang University; Beijing 100191 People's Republic of China
- State Key Laboratory of Transducer Technology; Chinese Academy of Sciences; Shanghai 200050 People's Republic of China
| | - Yaoping Liu
- Institute of Microelectronics, Peking University; Beijing 100871 People's Republic of China
| | - Feng Zhao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering; Beihang University; Beijing 100191 People's Republic of China
- State Key Laboratory of Transducer Technology; Chinese Academy of Sciences; Shanghai 200050 People's Republic of China
| | - Tingting Hun
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering; Beihang University; Beijing 100191 People's Republic of China
- State Key Laboratory of Transducer Technology; Chinese Academy of Sciences; Shanghai 200050 People's Republic of China
| | - Shan Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering; Beihang University; Beijing 100191 People's Republic of China
- State Key Laboratory of Transducer Technology; Chinese Academy of Sciences; Shanghai 200050 People's Republic of China
| | - Yuguang Wang
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; 100083 People's Republic of China
| | - Weijie Sun
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; 100083 People's Republic of China
| | - Wei Wang
- Institute of Microelectronics, Peking University; Beijing 100871 People's Republic of China
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication; Beijing 100871 China
- Innovation Center for Micro-Nano-electronics and Integrated System; Beijing 100871 China
| | - Yan Sun
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering; Beihang University; Beijing 100191 People's Republic of China
- State Key Laboratory of Transducer Technology; Chinese Academy of Sciences; Shanghai 200050 People's Republic of China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering; Beihang University; Beijing 100191 People's Republic of China
- National Research Center for Rehabilitation Technical Aids; Beijing 100176 People's Republic of China
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50
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3D porous polyurethanes featured by different mechanical properties: Characterization and interaction with skeletal muscle cells. J Mech Behav Biomed Mater 2017; 75:147-159. [PMID: 28734256 DOI: 10.1016/j.jmbbm.2017.07.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 07/10/2017] [Accepted: 07/13/2017] [Indexed: 02/07/2023]
Abstract
The fabrication of biomaterials for interaction with muscle cells has attracted significant interest in the last decades. However, 3D porous scaffolds featured by a relatively low stiffness (almost matching the natural muscle one) and highly stable in response to cyclic loadings are not available at present, in this context. This work describes 3D polyurethane-based porous scaffolds featured by different mechanical properties. Biomaterial stiffness was finely tuned by varying the cross-linking degree of the starting foam. Compression tests revealed, for the softest material formulation, stiffness values close to the ones possessed by natural skeletal muscles. The materials were also characterized in terms of local nanoindenting, rheometric properties and long-term stability through cyclic compressions, in a strain range reflecting the contraction extent of natural muscles. Preliminary in vitro tests revealed a preferential adhesion of C2C12 skeletal muscle cells over the softer, rougher and more porous structures. All the material formulations showed low cytotoxicity.
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