201
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Effects of extracellular matrix viscoelasticity on cellular behaviour. Nature 2020; 584:535-546. [PMID: 32848221 DOI: 10.1038/s41586-020-2612-2] [Citation(s) in RCA: 903] [Impact Index Per Article: 225.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 06/17/2020] [Indexed: 11/08/2022]
Abstract
Substantial research over the past two decades has established that extracellular matrix (ECM) elasticity, or stiffness, affects fundamental cellular processes, including spreading, growth, proliferation, migration, differentiation and organoid formation. Linearly elastic polyacrylamide hydrogels and polydimethylsiloxane (PDMS) elastomers coated with ECM proteins are widely used to assess the role of stiffness, and results from such experiments are often assumed to reproduce the effect of the mechanical environment experienced by cells in vivo. However, tissues and ECMs are not linearly elastic materials-they exhibit far more complex mechanical behaviours, including viscoelasticity (a time-dependent response to loading or deformation), as well as mechanical plasticity and nonlinear elasticity. Here we review the complex mechanical behaviours of tissues and ECMs, discuss the effect of ECM viscoelasticity on cells, and describe the potential use of viscoelastic biomaterials in regenerative medicine. Recent work has revealed that matrix viscoelasticity regulates these same fundamental cell processes, and can promote behaviours that are not observed with elastic hydrogels in both two- and three-dimensional culture microenvironments. These findings have provided insights into cell-matrix interactions and how these interactions differentially modulate mechano-sensitive molecular pathways in cells. Moreover, these results suggest design guidelines for the next generation of biomaterials, with the goal of matching tissue and ECM mechanics for in vitro tissue models and applications in regenerative medicine.
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202
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Chu HY, Chen YJ, Hsu CJ, Liu YW, Chiou JF, Lu LS, Tseng FG. Physical Cues in the Microenvironment Regulate Stemness-Dependent Homing of Breast Cancer Cells. Cancers (Basel) 2020; 12:E2176. [PMID: 32764400 PMCID: PMC7464848 DOI: 10.3390/cancers12082176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 12/24/2022] Open
Abstract
Tissue-specific microenvironmental factors contribute to the targeting preferences of metastatic cancers. However, the physical attributes of the premetastatic microenvironment are not yet fully characterized. In this research, we develop a transwell-based alginate hydrogel (TAH) model to study how permeability, stiffness, and roughness of a hanging alginate hydrogel regulate breast cancer cell homing. In this model, a layer of physically characterized alginate hydrogel is formed at the bottom of a transwell insert, which is placed into a matching culture well with an adherent monolayer of breast cancer cells. We found that breast cancer cells dissociate from the monolayer and home to the TAH for continual growth. The process is facilitated by the presence of rich serum in the upper chamber, the increased stiffness of the gel, as well as its surface roughness. This model is able to support the homing ability of MCF-7 and MDA-MB-231 cells drifting across the vertical distance in the culture medium. Cells homing to the TAH display stemness phenotype morphologically and biochemically. Taken together, these findings suggest that permeability, stiffness, and roughness are important physical factors to regulate breast cancer homing to a premetastatic microenvironment.
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Affiliation(s)
- Hsueh-Yao Chu
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu 30013, Taiwan; (H.-Y.C.); (C.-J.H.); (Y.-W.L.)
| | - Yin-Ju Chen
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei 11031, Taiwan; (Y.-J.C.); (J.-F.C.)
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
- International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
| | - Chun-Jieh Hsu
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu 30013, Taiwan; (H.-Y.C.); (C.-J.H.); (Y.-W.L.)
| | - Yang-Wei Liu
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu 30013, Taiwan; (H.-Y.C.); (C.-J.H.); (Y.-W.L.)
| | - Jeng-Fong Chiou
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei 11031, Taiwan; (Y.-J.C.); (J.-F.C.)
- Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Taipei Cancer Center, Taipei Medical University, Taipei 11031, Taiwan
| | - Long-Sheng Lu
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei 11031, Taiwan; (Y.-J.C.); (J.-F.C.)
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
- International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
- International Ph.D. Program for Cell Therapy and Regeneration Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Fan-Gang Tseng
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu 30013, Taiwan; (H.-Y.C.); (C.-J.H.); (Y.-W.L.)
- Department of Engineering and System Science, Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing-Hua University, Hsinchu 30013, Taiwan
- Research Center for Applied Sciences, Academia Sinica, No. 128, Sec. 2, Academia Rd., Nankang, Taipei 11529, Taiwan
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203
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Morgan FLC, Moroni L, Baker MB. Dynamic Bioinks to Advance Bioprinting. Adv Healthc Mater 2020; 9:e1901798. [PMID: 32100963 DOI: 10.1002/adhm.201901798] [Citation(s) in RCA: 100] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 01/31/2020] [Indexed: 01/06/2023]
Abstract
The development of bioinks for bioprinting of cell-laden constructs remains a challenge for tissue engineering, despite vigorous investigation. Hydrogels to be used as bioinks must fulfill a demanding list of requirements, mainly focused around printability and cell function. Recent advances in the use of supramolecular and dynamic covalent chemistry (DCvC) provide paths forward to develop bioinks. These dynamic hydrogels enable tailorability, higher printing performance, and the creation of more life-like environments for ultimate tissue maturation. This review focuses on the exploration and benefits of dynamically cross-linked bioinks for bioprinting, highlighting recent advances, benefits, and challenges in this emerging area. By incorporating internal dynamics, many benefits can be imparted to the material, providing design elements for next generation bioinks.
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Affiliation(s)
- Francis L. C. Morgan
- Department of Complex Tissue RegenerationMERLN InstituteMaastricht University 6200 MD Maastricht The Netherlands
| | - Lorenzo Moroni
- Department of Complex Tissue RegenerationMERLN InstituteMaastricht University 6200 MD Maastricht The Netherlands
| | - Matthew B. Baker
- Department of Complex Tissue RegenerationMERLN InstituteMaastricht University 6200 MD Maastricht The Netherlands
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204
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Viola JM, Porter CM, Gupta A, Alibekova M, Prahl LS, Hughes AJ. Guiding Cell Network Assembly using Shape-Morphing Hydrogels. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2002195. [PMID: 32578300 PMCID: PMC7950730 DOI: 10.1002/adma.202002195] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/30/2020] [Indexed: 05/11/2023]
Abstract
Forces and relative movement between cells and extracellular matrix (ECM) are crucial to the self-organization of tissues during development. However, the spatial range over which these dynamics can be controlled in engineering approaches is limited, impeding progress toward the construction of large, structurally mature tissues. Herein, shape-morphing materials called "kinomorphs" that rationally control the shape and size of multicellular networks are described. Kinomorphs are sheets of ECM that change their shape, size, and density depending on patterns of cell contractility within them. It is shown that these changes can manipulate structure-forming behaviors of epithelial cells in many spatial locations at once. Kinomorphs are built using a new photolithographic technology to pattern single cells into ECM sheets that are >10× larger than previously described. These patterns are designed to partially mimic the branch geometry of the embryonic kidney epithelial network. Origami-inspired simulations are then used to predict changes in kinomorph shapes. Last, kinomorph dynamics are shown to provide a centimeter-scale program that sets specific spatial locations in which ≈50 µm-diameter epithelial tubules form by cell coalescence and structural maturation. The kinomorphs may significantly advance organ-scale tissue construction by extending the spatial range of cell self-organization in emerging model systems such as organoids.
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Affiliation(s)
- John M Viola
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Catherine M Porter
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Ananya Gupta
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Mariia Alibekova
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Louis S Prahl
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Alex J Hughes
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
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205
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Ryoo J, Choi J, Ki C. Effect of ethanol treatment on physical property of photopolymerized hyaluronic acid/silk fibroin hybrid hydrogel. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122733] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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206
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Heng BC, Zhang X, Aubel D, Bai Y, Li X, Wei Y, Fussenegger M, Deng X. Role of YAP/TAZ in Cell Lineage Fate Determination and Related Signaling Pathways. Front Cell Dev Biol 2020; 8:735. [PMID: 32850847 PMCID: PMC7406690 DOI: 10.3389/fcell.2020.00735] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 07/15/2020] [Indexed: 12/11/2022] Open
Abstract
The penultimate effectors of the Hippo signaling pathways YAP and TAZ, are transcriptional co-activator proteins that play key roles in many diverse biological processes, ranging from cell proliferation, tumorigenesis, mechanosensing and cell lineage fate determination, to wound healing and regeneration. In this review, we discuss the regulatory mechanisms by which YAP/TAZ control stem/progenitor cell differentiation into the various major lineages that are of interest to tissue engineering and regenerative medicine applications. Of particular interest is the key role of YAP/TAZ in maintaining the delicate balance between quiescence, self-renewal, proliferation and differentiation of endogenous adult stem cells within various tissues/organs during early development, normal homeostasis and regeneration/healing. Finally, we will consider how increasing knowledge of YAP/TAZ signaling might influence the trajectory of future progress in regenerative medicine.
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Affiliation(s)
- Boon C. Heng
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
- Faculty of Science and Technology, Sunway University, Subang Jaya, Malaysia
| | - Xuehui Zhang
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, NMPA Key Laboratory for Dental Materials, Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing, China
| | - Dominique Aubel
- IUTA Department Genie Biologique, Universite Claude Bernard Lyon 1, Villeurbanne, France
| | - Yunyang Bai
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xiaochan Li
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Yan Wei
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Martin Fussenegger
- Department of Biosystems Science and Engineering, ETH-Zürich, Basel, Switzerland
| | - Xuliang Deng
- National Engineering Laboratory for Digital and Material Technology of Stomatology, NMPA Key Laboratory for Dental Materials, Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing, China
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
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207
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Ledo AM, Vining KH, Alonso MJ, Garcia-Fuentes M, Mooney DJ. Extracellular matrix mechanics regulate transfection and SOX9-directed differentiation of mesenchymal stem cells. Acta Biomater 2020; 110:153-163. [PMID: 32417266 PMCID: PMC7291356 DOI: 10.1016/j.actbio.2020.04.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 04/13/2020] [Accepted: 04/14/2020] [Indexed: 12/21/2022]
Abstract
Gene delivery within hydrogel matrices can potentially direct mesenchymal stem cells (MSCs) towards a chondrogenic fate to promote regeneration of cartilage. Here, we investigated whether the mechanical properties of the hydrogel containing the gene delivery systems could enhance transfection and chondrogenic programming of primary human bone marrow-derived MSCs. We developed collagen-I-alginate interpenetrating polymer network hydrogels with tunable stiffness and adhesion properties. The hydrogels were activated with nanocomplexed SOX9 polynucleotides to direct chondrogenic differentiation of MSCs. MSCs transfected within the hydrogels showed higher expression of chondrogenic markers compared to MSCs transfected in 2D prior to encapsulation. The nanocomplex uptake and resulting expression of transfected SOX9 were jointly enhanced by increased stiffness and cell-adhesion ligand density in the hydrogels. Further, transfection of SOX9 effectively induced MSCs chondrogenesis and reduced markers of hypertrophy compared to control matrices. These findings highlight the importance of matrix stiffness and adhesion as design parameters in gene-activated matrices for regenerative medicine. STATEMENT OF SIGNIFICANCE: Gene-activated matrices (GAMs) are biodegradable polymer networks integrating gene therapies, and they are promising technologies for supporting tissue regeneration. Despite this interest, there is still limited information on how to rationally design these systems. Here, we provide a systematic study of the effect of matrix stiffness and cell adhesion ligands on gene transfer efficiency. We show that high stiffness and the presence of cell-binding sites promote transfection efficiency and that this result is related to more efficient internalization and trafficking of the gene therapies. GAMs with optimized mechanical properties can induce cartilage formation and result in tissues with better characteristics for articular cartilage tissue engineering as compared to previously described standard methods.
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Affiliation(s)
- Adriana M Ledo
- Department of Pharmacy and Pharmaceutical Technology, IDIS Research Institute, CIMUS Research Institute, University of Santiago de Compostela, Santiago de Compostela 15782, Spain.
| | - Kyle H Vining
- Wyss Institute for Biologically Inspired Engineering and John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
| | - Maria J Alonso
- Department of Pharmacy and Pharmaceutical Technology, IDIS Research Institute, CIMUS Research Institute, University of Santiago de Compostela, Santiago de Compostela 15782, Spain.
| | - Marcos Garcia-Fuentes
- Department of Pharmacy and Pharmaceutical Technology, IDIS Research Institute, CIMUS Research Institute, University of Santiago de Compostela, Santiago de Compostela 15782, Spain.
| | - David J Mooney
- Wyss Institute for Biologically Inspired Engineering and John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
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208
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Zhang F, King MW. Biodegradable Polymers as the Pivotal Player in the Design of Tissue Engineering Scaffolds. Adv Healthc Mater 2020; 9:e1901358. [PMID: 32424996 DOI: 10.1002/adhm.201901358] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 04/03/2020] [Indexed: 01/15/2023]
Abstract
Biodegradable polymers play a pivotal role in in situ tissue engineering. Utilizing various technologies, researchers have been able to fabricate 3D tissue engineering scaffolds using biodegradable polymers. They serve as temporary templates, providing physical and biochemical signals to the cells and determining the successful outcome of tissue remodeling. Furthermore, a biodegradable scaffold also presents the fourth dimension for tissue engineering, namely time. The properties of the biodegradable polymer change over time, presenting continuously changing features during the degradation process. These changes become more complicated when different materials are combined together to fabricate a composite or heterogeneous scaffold. This review undertakes a systematic analysis of the basic characteristics of biodegradable polymers and describe recent advances in making composite biodegradable scaffolds for in situ tissue engineering and regenerative medicine. The interaction between implanted biodegradable biomaterials and the in vivo environment are also discussed, including the properties and functional changes of the degradable scaffold, the local effect of degradation on the contiguous tissue and their evaluation using both in vitro and in vivo models.
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Affiliation(s)
- Fan Zhang
- Wilson College of TextilesNorth Carolina State University Raleigh NC 27606 USA
| | - Martin W. King
- Wilson College of TextilesNorth Carolina State University Raleigh NC 27606 USA
- College of TextilesDonghua University Songjiang District Shanghai 201620 China
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209
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Lutzweiler G, Ndreu Halili A, Engin Vrana N. The Overview of Porous, Bioactive Scaffolds as Instructive Biomaterials for Tissue Regeneration and Their Clinical Translation. Pharmaceutics 2020; 12:E602. [PMID: 32610440 PMCID: PMC7407612 DOI: 10.3390/pharmaceutics12070602] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/08/2020] [Accepted: 06/23/2020] [Indexed: 12/20/2022] Open
Abstract
Porous scaffolds have been employed for decades in the biomedical field where researchers have been seeking to produce an environment which could approach one of the extracellular matrixes supporting cells in natural tissues. Such three-dimensional systems offer many degrees of freedom to modulate cell activity, ranging from the chemistry of the structure and the architectural properties such as the porosity, the pore, and interconnection size. All these features can be exploited synergistically to tailor the cell-material interactions, and further, the tissue growth within the voids of the scaffold. Herein, an overview of the materials employed to generate porous scaffolds as well as the various techniques that are used to process them is supplied. Furthermore, scaffold parameters which modulate cell behavior are identified under distinct aspects: the architecture of inert scaffolds (i.e., pore and interconnection size, porosity, mechanical properties, etc.) alone on cell functions followed by comparison with bioactive scaffolds to grasp the most relevant features driving tissue regeneration. Finally, in vivo outcomes are highlighted comparing the accordance between in vitro and in vivo results in order to tackle the future translational challenges in tissue repair and regeneration.
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Affiliation(s)
- Gaëtan Lutzweiler
- Institut National de la Santé et de la Recherche Medicale, UMR_S 1121, 11 rue Humann, 67085 Strasbourg CEDEX, France
| | - Albana Ndreu Halili
- Department of Information Technology, Aleksander Moisiu University, 2001 Durres, Albania;
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210
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211
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McCreery KP, Calve S, Neu CP. Ontogeny informs regeneration: explant models to investigate the role of the extracellular matrix in cartilage tissue assembly and development. Connect Tissue Res 2020; 61:278-291. [PMID: 32186210 PMCID: PMC7190409 DOI: 10.1080/03008207.2019.1698556] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 11/22/2019] [Indexed: 02/03/2023]
Abstract
Osteoarthritis (OA) is typically managed in late stages by replacement of the articular cartilage surface with a prosthesis as an effective, though undesirable outcome. As an alternative, hydrogel implants or growth factor treatments are currently of great interest in the tissue engineering community, and scaffold materials are often designed to emulate the mechanical and chemical composition of mature extracellular matrix (ECM) tissue. However, scaffolds frequently fail to capture the structure and organization of cartilage. Additionally, many current scaffold designs do not mimic processes by which structurally sound cartilage is formed during musculoskeletal development. The objective of this review is to highlight methods that investigate cartilage ontogenesis with native and model systems in the context of regenerative medicine. Specific emphasis is placed on the use of cartilage explant cultures that provide a physiologically relevant microenvironment to study tissue assembly and development. Ex vivo cartilage has proven to be a cost-effective and accessible model system that allows researchers to control the culture conditions and stimuli and perform proteomics and imaging studies that are not easily possible using in vivo experiments, while preserving native cell-matrix interactions. We anticipate our review will promote a developmental biology approach using explanted tissues to guide cartilage tissue engineering and inform new treatment methods for OA and joint damage.
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Affiliation(s)
| | - Sarah Calve
- Department of Mechanical Engineering, University of Colorado, Boulder, USA
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, USA
| | - Corey P. Neu
- Department of Mechanical Engineering, University of Colorado, Boulder, USA
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212
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Lavrador P, Gaspar VM, Mano JF. Mechanochemical Patternable ECM-Mimetic Hydrogels for Programmed Cell Orientation. Adv Healthc Mater 2020; 9:e1901860. [PMID: 32323469 DOI: 10.1002/adhm.201901860] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 03/16/2020] [Indexed: 01/10/2023]
Abstract
Native human tissues are supported by a viscoelastic extracellular matrix (ECM) that can adapt its intricate network to dynamic mechanical stimuli. To recapitulate the unique ECM biofunctionality, hydrogel design is shifting from typical covalent crosslinks toward covalently adaptable networks. To pursue such properties, herein hybrid polysaccharide-polypeptide networks are designed based on dynamic covalent assembly inspired by natural ECM crosslinking processes. This is achieved through the synthesis of an amine-reactive oxidized-laminarin biopolymer that can readily crosslink with gelatin (oxLAM-Gelatin) and simultaneously allow cell encapsulation. Interestingly, the rational design of oxLAM-Gelatin hydrogels with varying aldehyde-to-amine ratios enables a refined control over crosslinking kinetics, viscoelastic properties, and degradability profile. The mechanochemical features of these hydrogels post-crosslinking offer an alternative route for imprinting any intended nano- or microtopography in ECM-mimetic matrices bearing inherent cell-adhesive motifs. Different patterns are easily paved in oxLAM-Gelatin under physiological conditions and complex topographical configurations are retained along time. Human adipose-derived mesenchymal stem cells contacting mechanically sculpted oxLAM-Gelatin hydrogels sense the underlying surface nanotopography and align parallel to the anisotropic nanoridge/nanogroove intercalating array. These findings demonstrate that covalently adaptable features in ECM-mimetic networks can be leveraged to combine surface topography and cell-adhesive motifs as they appear in natural matrices.
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Affiliation(s)
- Pedro Lavrador
- Department of ChemistryCICECO – Aveiro Institute of MaterialsUniversity of AveiroCampus Universitário de Santiago Aveiro 3810‐193 Portugal
| | - Vítor M. Gaspar
- Department of ChemistryCICECO – Aveiro Institute of MaterialsUniversity of AveiroCampus Universitário de Santiago Aveiro 3810‐193 Portugal
| | - João F. Mano
- Department of ChemistryCICECO – Aveiro Institute of MaterialsUniversity of AveiroCampus Universitário de Santiago Aveiro 3810‐193 Portugal
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213
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Yu L, Sun ZJ, Tan QC, Wang S, Wang WH, Yang XQ, Ye XJ. Thermosensitive injectable decellularized nucleus pulposus hydrogel as an ideal biomaterial for nucleus pulposus regeneration. J Biomater Appl 2020; 35:182-192. [PMID: 32338168 DOI: 10.1177/0885328220921328] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Extracellular matrix loss is one of the early manifestations of intervertebral disc degeneration. Stem cell-based tissue engineering creates an appropriate microenvironment for long term cell survival, promising for NP regeneration. We created a decellularized nucleus pulposus hydrogel (DNPH) from fresh bovine nucleus pulposus. Decellularization removed NP cells effectively, while highly preserving their structures and major biochemical components, such as glycosaminoglycan and collagen II. DNPH could be gelled as a uniform grid structure in situ at 37°C for 30 min. Adding adipose marrow-derived mesenchymal stem cells into the hydrogel for three-dimensional culture resulted in good bioactivity and biocompatibility in vitro. Meanwhile, NP-related gene expression significantly increased without the addition of exogenous biological factors. In summary, the thermosensitive and injectable hydrogel, which has low toxicity and inducible differentiation, could serve as a bio-scaffold, bio-carrier, and three-dimensional culture system. Therefore, DNPH has an outstanding potential for intervertebral disc regeneration.
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Affiliation(s)
- Lei Yu
- Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Zi-Jie Sun
- Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Quan-Chang Tan
- Air Force Hospital of PLA Eastern Theater Command, Nanjing, Jiangsu, China
| | - Shuang Wang
- Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Wei-Heng Wang
- Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Xiang-Qun Yang
- Department of Anatomy, Institute of Biomedical Engineering, Second Military Medical University, Shanghai, China
| | - Xiao-Jian Ye
- Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, China
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214
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Chimene D, Miller L, Cross LM, Jaiswal MK, Singh I, Gaharwar AK. Nanoengineered Osteoinductive Bioink for 3D Bioprinting Bone Tissue. ACS APPLIED MATERIALS & INTERFACES 2020; 12:15976-15988. [PMID: 32091189 DOI: 10.1021/acsami.9b19037] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Bioprinting is an emerging additive manufacturing approach to the fabrication of patient-specific, implantable three-dimensional (3D) constructs for regenerative medicine. However, developing cell-compatible bioinks with high printability, structural stability, biodegradability, and bioactive characteristics is still a primary challenge for translating 3D bioprinting technology to preclinical and clinal models. To overcome this challenge, we developed a nanoengineered ionic covalent entanglement (NICE) bioink formulation for 3D bone bioprinting. The NICE bioinks allow precise control over printability, mechanical properties, and degradation characteristics, enabling custom 3D fabrication of mechanically resilient, cellularized structures. We demonstrate cell-induced remodeling of 3D bioprinted scaffolds over 60 days, demonstrating deposition of nascent extracellular matrix proteins. Interestingly, the bioprinted constructs induce endochondral differentiation of encapsulated human mesenchymal stem cells (hMSCs) in the absence of osteoinducing agent. Using next-generation transcriptome sequencing (RNA-seq) technology, we establish the role of nanosilicates, a bioactive component of NICE bioink, to stimulate endochondral differentiation at the transcriptome level. Overall, the osteoinductive bioink has the ability to induce formation of osteo-related mineralized extracellular matrix by encapsulated hMSCs in growth factor-free conditions. Furthermore, we demonstrate the ability of NICE bioink to fabricate patient-specific, implantable 3D scaffolds for repair of craniomaxillofacial bone defects. We envision development of this NICE bioink technology toward a realistic clinical process for 3D bioprinting patient-specific bone tissue for regenerative medicine.
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Affiliation(s)
- David Chimene
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Logan Miller
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Lauren M Cross
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Manish K Jaiswal
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Irtisha Singh
- Department of Molecular and Cellular Medicine, College of Medicine, Texas A&M Health Science Center, Bryan, Texas 77807, United States
| | - Akhilesh K Gaharwar
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department of Material Science and Engineering, College of Engineering, Texas A&M University, College Station, Texas 77843, United States
- Center for Remote Health Technologies and Systems, Texas A&M University, College Station, Texas 77843, United States
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215
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Horton ER, Vallmajo‐Martin Q, Martin I, Snedeker JG, Ehrbar M, Blache U. Extracellular Matrix Production by Mesenchymal Stromal Cells in Hydrogels Facilitates Cell Spreading and Is Inhibited by FGF-2. Adv Healthc Mater 2020; 9:e1901669. [PMID: 32129003 DOI: 10.1002/adhm.201901669] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 02/10/2020] [Indexed: 12/18/2022]
Abstract
In native tissues, the interaction between cells and the surrounding extracellular matrix (ECM) is reciprocal, as cells not only receive signals from the ECM but also actively remodel it through secretion of cell-derived ECM. However, very little is known about the reciprocal interaction between cells and their secreted ECM within synthetic biomaterials that mimic the ECM for use in engineering of tissues for regenerative medicine or as tissue models. Here, poly(ethylene glycol) (PEG) hydrogels with fully defined biomaterial properties are used to investigate the emerging role of cell-derived ECM on culture outcomes. It is shown that human mesenchymal stromal cells (MSCs) secrete ECM proteins into the pericellular space early after encapsulation and that, even in the absence of material-presented cell adhesion motifs, cell-derived fibronectin enables cell spreading. Then, it is investigated how different culture conditions influence MSC ECM expression in hydrogels. Most strikingly, it is found by RNA sequencing that the fibroblast growth factor 2 (FGF-2) changes ECM gene expression and, in particular, decreases the expression of structural ECM components including fibrillar collagens. In summary, this work shows that cell-derived ECM is a guiding cue in 3D hydrogels and that FGF-2 is a potentially important ECM regulator within bioengineered cell and tissue systems.
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Affiliation(s)
- Edward R. Horton
- Biotech Research and Innovation CentreUniversity of Copenhagen Copenhagen 2200 Denmark
| | - Queralt Vallmajo‐Martin
- Department of ObstetricsUniversity and University Hospital of Zürich Zürich 8091 Switzerland
- Institute of BioengineeringEcole Polytechnique Fédérale de Lausanne Lausanne 1015 Switzerland
| | - Ivan Martin
- Department of BiomedicineUniversity Hospital BaselUniversity of Basel Basel 4031 Switzerland
| | - Jess G. Snedeker
- Institute for BiomechanicsETH Zürich Zürich 8092 Switzerland
- Balgrist University HospitalUniversity of Zürich Zürich 8008 Switzerland
| | - Martin Ehrbar
- Department of ObstetricsUniversity and University Hospital of Zürich Zürich 8091 Switzerland
| | - Ulrich Blache
- Department of ObstetricsUniversity and University Hospital of Zürich Zürich 8091 Switzerland
- Institute for BiomechanicsETH Zürich Zürich 8092 Switzerland
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216
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He Q, Liao Y, Zhang J, Yao X, Zhou W, Hong Y, Ouyang H. "All-in-One" Gel System for Whole Procedure of Stem-Cell Amplification and Tissue Engineering. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1906539. [PMID: 32141227 DOI: 10.1002/smll.201906539] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/20/2020] [Indexed: 06/10/2023]
Abstract
Microsphere (MS)-based systems provides great advantages for cell expansion and transplantation due to their high surface-to-volume ratio and biomimetic environment. However, a MS-based system that includes cell attachment, proliferation, passage, harvest, cryopreservation, and tissue engineering together has not been realized yet. An "all-in-one" gel MS-based system is established for human adipose-derived mesenchymal stem cells (hADSCs), realizing real 3D culture with enhanced expansion efficiency and simplified serial cell culture operations, and construction of macrotissues with uniform cell distribution and specific function. A 3D digital light-processing technology is developed to fabricate gel MSs in an effective way. The printed MSs present a suitable environment with rough surface architecture and the mechanical properties of soft tissues, leading to high cell viability, attachment, proliferation, activity, and differentiation potential. Further, convenient standard operation procedures, including cell passage, detachment, and cryopreservation, are established for cell culture on the gel MSs. Finally, hADSCs-loaded gel MSs form macrotissues through a "bottom-up" approach, which demonstrates the potential applications for tissue engineering. These findings exhibit the feasibility and beauty of "all-in-one" stem cell culture and tissue engineering system.
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Affiliation(s)
- Qiulin He
- Department of Orthopaedic Surgery, Second Affiliated Hospital and Zhejiang University-University of Edinburgh Institute and School of Basic Medicine, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Youguo Liao
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Nanning, 530021, China
| | - Jingwei Zhang
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Xudong Yao
- Department of Orthopaedic Surgery, Second Affiliated Hospital and Zhejiang University-University of Edinburgh Institute and School of Basic Medicine, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Wenyan Zhou
- Department of Orthopaedic Surgery, Second Affiliated Hospital and Zhejiang University-University of Edinburgh Institute and School of Basic Medicine, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Yi Hong
- Department of Orthopaedic Surgery, Second Affiliated Hospital and Zhejiang University-University of Edinburgh Institute and School of Basic Medicine, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Hongwei Ouyang
- Department of Orthopaedic Surgery, Second Affiliated Hospital and Zhejiang University-University of Edinburgh Institute and School of Basic Medicine, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, 310058, China
- Department of Sports Medicine, Zhejiang University School of Medicine, Hangzhou, 310058, China
- China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou, 310058, China
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217
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Davidson MD, Burdick JA, Wells RG. Engineered Biomaterial Platforms to Study Fibrosis. Adv Healthc Mater 2020; 9:e1901682. [PMID: 32181987 PMCID: PMC7274888 DOI: 10.1002/adhm.201901682] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 02/12/2020] [Accepted: 02/13/2020] [Indexed: 12/13/2022]
Abstract
Many pathologic conditions lead to the development of tissue scarring and fibrosis, which are characterized by the accumulation of abnormal extracellular matrix (ECM) and changes in tissue mechanical properties. Cells within fibrotic tissues are exposed to dynamic microenvironments that may promote or prolong fibrosis, which makes it difficult to treat. Biomaterials have proved indispensable to better understand how cells sense their extracellular environment and are now being employed to study fibrosis in many tissues. As mechanical testing of tissues becomes more routine and biomaterial tools become more advanced, the impact of biophysical factors in fibrosis are beginning to be understood. Herein, fibrosis from a materials perspective is reviewed, including the role and mechanical properties of ECM components, the spatiotemporal mechanical changes that occur during fibrosis, current biomaterial systems to study fibrosis, and emerging biomaterial systems and tools that can further the understanding of fibrosis initiation and progression. This review concludes by highlighting considerations in promoting wide-spread use of biomaterials for fibrosis investigations and by suggesting future in vivo studies that it is hoped will inspire the development of even more advanced biomaterial systems.
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Affiliation(s)
- Matthew D Davidson
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
- NSF Science and Technology Center for Engineering Mechanobiology, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Jason A Burdick
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
- NSF Science and Technology Center for Engineering Mechanobiology, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Rebecca G Wells
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
- NSF Science and Technology Center for Engineering Mechanobiology, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
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218
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Deo KA, Singh KA, Peak CW, Alge DL, Gaharwar AK. Bioprinting 101: Design, Fabrication, and Evaluation of Cell-Laden 3D Bioprinted Scaffolds. Tissue Eng Part A 2020; 26:318-338. [PMID: 32079490 PMCID: PMC7480731 DOI: 10.1089/ten.tea.2019.0298] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 02/11/2020] [Indexed: 12/19/2022] Open
Abstract
3D bioprinting is an additive manufacturing technique that recapitulates the native architecture of tissues. This is accomplished through the precise deposition of cell-containing bioinks. The spatiotemporal control over bioink deposition permits for improved communication between cells and the extracellular matrix, facilitates fabrication of anatomically and physiologically relevant structures. The physiochemical properties of bioinks, before and after crosslinking, are crucial for bioprinting complex tissue structures. Specifically, the rheological properties of bioinks determines printability, structural fidelity, and cell viability during the printing process, whereas postcrosslinking of bioinks are critical for their mechanical integrity, physiological stability, cell survival, and cell functions. In this review, we critically evaluate bioink design criteria, specifically for extrusion-based 3D bioprinting techniques, to fabricate complex constructs. The effects of various processing parameters on the biophysical and biochemical characteristics of bioinks are discussed. Furthermore, emerging trends and future directions in the area of bioinks and bioprinting are also highlighted. Graphical abstract [Figure: see text] Impact statement Extrusion-based 3D bioprinting is an emerging additive manufacturing approach for fabricating cell-laden tissue engineered constructs. This review critically evaluates bioink design criteria to fabricate complex tissue constructs. Specifically, pre- and post-printing evaluation approaches are described, as well as new research directions in the field of bioink development and functional bioprinting are highlighted.
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Affiliation(s)
- Kaivalya A. Deo
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, Texas
| | - Kanwar Abhay Singh
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, Texas
| | - Charles W. Peak
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, Texas
| | - Daniel L. Alge
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, Texas
- Materials Science and Engineering, College of Engineering, Texas A&M University, College Station, Texas
| | - Akhilesh K. Gaharwar
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, Texas
- Materials Science and Engineering, College of Engineering, Texas A&M University, College Station, Texas
- Center for Remote Health Technologies and Systems, Texas A&M University, College Station, Texas
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219
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Zhang X, Simmons CA, Paul Santerre J. Paracrine signalling from monocytes enables desirable extracellular matrix accumulation and temporally appropriate phenotype of vascular smooth muscle cell-like cells derived from adipose stromal cells. Acta Biomater 2020; 103:129-141. [PMID: 31821896 DOI: 10.1016/j.actbio.2019.12.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 12/04/2019] [Accepted: 12/05/2019] [Indexed: 12/12/2022]
Abstract
In vascular tissue engineering, the ability to obtain a robust and safe vascular tissue cell source (e.g. vascular smooth muscle cells (VSMCs)) and to promote vascular tissue-specific extracellular matrix (ECM) protein production is critically important. Mature blood vessel-derived VSMCs are not practical for in vitro vascular tissue regeneration. The authors have conceived a strategy to differentiate adipose derived stromal cells (ASCs) into VSMC-like cells (ASC-VSMCs) that were similar to mature umbilical artery VSMCs at the transcriptional, protein and contraction function levels. Monocytes/macrophages are known as important regulators of the inflammation and regeneration processes within different tissue types of the body. However, our understanding of the potential interactions between specific tissue-like cells differentiated from stem/stromal cells (e.g. ASC-VSMCs) and monocytes/macrophages (cued by specific biomaterial scaffolds) is still limited. In this study, indirect and direct ASC-VSMC-monocyte co-cultures were constructed within a porous polyurethane scaffold (D-PHI) previously shown to have an immunomodulatory character. The effects of monocytes/macrophages on the cellularity (cell number detected with DNA quantification assay), ECM (glycosaminoglycan (GAG), collagen, and elastin) accumulation as well as the maintenance of contractile VSMC markers (calponin and smoothelin) of the ASC-VSMCs after a month of co-culture were investigated. It was found that monocyte paracrine signalling in D-PHI positively affected the cellularity and ECM accumulation of ASC-VSMCs in co-culture. Cause-effect relationships were also identified between the release of pro-inflammatory/anti-inflammatory factors (i.e. IL6, TGF-β1) in co-culture and the expression of contractile proteins (calponin and smoothelin) by ASC-VSMCs. This study demonstrated the importance of combining an immune cell strategy with stromal cell derived VSMCs (i.e. ASC-VSMCs) to achieve a practical vascular tissue engineering outcome. STATEMENT OF SIGNIFICANCE: Adipose stromal cell derived-vascular smooth muscle cells (ASC-VSMCs) are a promising cell source for vascular tissue engineering. Monocytes/monocyte derived macrophages can be harnessed as an immune-assisted strategy to promote vascular tissue regeneration. This study demonstrated that the co-culture of human ASC-VSMCs with monocytes significantly enhanced the cellularity and extracellular matrix (ECM) accumulation within anionic polyurethane (D-PHI) scaffolds, partially mediated by monocyte paracrine signalling mechanisms. In addition, specific VSMC contractile markers (calponin and smoothelin) were still present in ASC-VSMCs when the cells were exposed to monocytes for a month in vitro. This study corroborated the potential selection of ASC-VSMCs for in vitro engineering of vascular tissue in an immunomodulatory biomaterial scaffold (e.g. D-PHI) based co-culture system containing monocytes.
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Affiliation(s)
- Xiaoqing Zhang
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, 661 University Avenue, 14th floor, room 1435, Toronto, Ontario M5G 1M1, Canada
| | - Craig A Simmons
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada; Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada; Faculty of Dentistry, University of Toronto, Toronto, Ontario M5G 1G6, Canada; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, 661 University Avenue, 14th floor, room 1435, Toronto, Ontario M5G 1M1, Canada
| | - J Paul Santerre
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada; Faculty of Dentistry, University of Toronto, Toronto, Ontario M5G 1G6, Canada; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, 661 University Avenue, 14th floor, room 1435, Toronto, Ontario M5G 1M1, Canada.
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220
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Galarza S, Crosby AJ, Pak C, Peyton SR. Control of Astrocyte Quiescence and Activation in a Synthetic Brain Hydrogel. Adv Healthc Mater 2020; 9:e1901419. [PMID: 31943839 DOI: 10.1002/adhm.201901419] [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] [Received: 10/07/2019] [Revised: 11/26/2019] [Indexed: 12/16/2022]
Abstract
Bioengineers have designed numerous instructive brain extracellular matrix (ECM) environments with tailored and tunable protein compositions and biomechanical properties in vitro to study astrocyte reactivity during trauma and inflammation. However, a major limitation of both protein-based and synthetic model microenvironments is that astrocytes within fail to retain their characteristic stellate morphology and quiescent state without becoming activated under "normal" culture conditions. Here, a synthetic hydrogel is introduced, which for the first time demonstrates maintenance of astrocyte quiescence and activation on demand. With this synthetic brain hydrogel, the brain-specific integrin-binding and matrix metalloprotease-degradable domains of proteins are shown to control astrocyte star-shaped morphologies, and an ECM condition that maintains astrocyte quiescence with minimal activation can be achieved. In addition, activation can be induced in a dose-dependent manner via both defined cytokine cocktails and low molecular weight hyaluronic acid. This synthetic brain hydrogel is envisioned as a new tool to study the physiological role of astrocytes in health and disease.
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Affiliation(s)
- Sualyneth Galarza
- Department of Chemical Engineering University of Massachusetts Amherst MA 01003 USA
| | - Alfred J. Crosby
- Department of Polymer Science and Engineering University of Massachusetts Amherst MA 01003 USA
| | - ChangHui Pak
- Department of Biochemistry and Molecular Biology University of Massachusetts Amherst MA 01003 USA
| | - Shelly R. Peyton
- Department of Chemical Engineering University of Massachusetts Amherst MA 01003 USA
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221
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Abstract
We explore the design and synthesis of hydrogel scaffolds for tissue engineering from the perspective of the underlying polymer chemistry. The key polymers, properties and architectures used, and their effect on tissue growth are discussed.
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222
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Rivero RE, Capella V, Cecilia Liaudat A, Bosch P, Barbero CA, Rodríguez N, Rivarola CR. Mechanical and physicochemical behavior of a 3D hydrogel scaffold during cell growth and proliferation. RSC Adv 2020; 10:5827-5837. [PMID: 35497440 PMCID: PMC9049616 DOI: 10.1039/c9ra08162c] [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: 10/08/2019] [Accepted: 01/20/2020] [Indexed: 12/25/2022] Open
Abstract
Some of the essential properties for cellular scaffolding are the capability to maintain the three-dimensional (3D) structure, good adhesion, and adequate elastic modulus during cell growth, migration, and proliferation. Biocompatible synthetic hydrogels are commonly used as cellular scaffolds because they can mimic the natural extracellular matrices (ECMs). However, it is possible that the physicochemical and mechanical behavior of the scaffold changes during cell proliferation and loses the scaffold properties but this is rarely monitored. In this work, the physicochemical and mechanical properties of a macroporous soft material based on poly(N-isopropyl acrylamide) (PNIPAM) have been studied during a period of 75 days at culture condition while bovine fetal fibroblasts (BFF) were grown within the matrix. The interconnected macroporous hydrogel was obtained by cryogelation at −18 °C. The swelling capacity of the scaffold was not altered during cell proliferation but changes in the mechanical properties were observed, beginning with the high elastic modulus (280 kPa) that progressively decreased until mechanical stability (40 kPa) was achieved after 20 culture days. It was observed that the matrix–cell interactions together with collagen production favor normal cellular processes such as cell morphology, adhesion, migration, and proliferation. Therefore, the observed behavior of macroporous PNIPAM as a 3D scaffold during cell growth indicates that the soft matrix is cytocompatible for a long time and preserves the suitable properties that can be applied in tissue engineering and regenerative medicine. 3D cell scaffold based on macroporous PNIPAM is cytocompatible and preserves the cell viability for more than 75 culture days.![]()
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Affiliation(s)
- Rebeca E. Rivero
- Chemistry Department
- Faculty of Exact, Physical-Chemical and Natural Sciences
- Institute of Research in Energy Technologies and Advanced Materials (IITEMA)
- National University of Rio Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET)
- X5804ZAB Rio Cuarto
| | - Virginia Capella
- Chemistry Department
- Faculty of Exact, Physical-Chemical and Natural Sciences
- Institute of Research in Energy Technologies and Advanced Materials (IITEMA)
- National University of Rio Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET)
- X5804ZAB Rio Cuarto
| | - A. Cecilia Liaudat
- Molecular Biology Department
- Faculty of Exact, Physical Chemical and Natural Sciences
- Institute of Environmental Biotechnology and Health (INBIAS)
- National University of Rio Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET)
- X5804ZAB Rio Cuarto
| | - Pablo Bosch
- Molecular Biology Department
- Faculty of Exact, Physical Chemical and Natural Sciences
- Institute of Environmental Biotechnology and Health (INBIAS)
- National University of Rio Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET)
- X5804ZAB Rio Cuarto
| | - Cesar A. Barbero
- Chemistry Department
- Faculty of Exact, Physical-Chemical and Natural Sciences
- Institute of Research in Energy Technologies and Advanced Materials (IITEMA)
- National University of Rio Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET)
- X5804ZAB Rio Cuarto
| | - Nancy Rodríguez
- Molecular Biology Department
- Faculty of Exact, Physical Chemical and Natural Sciences
- Institute of Environmental Biotechnology and Health (INBIAS)
- National University of Rio Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET)
- X5804ZAB Rio Cuarto
| | - Claudia R. Rivarola
- Chemistry Department
- Faculty of Exact, Physical-Chemical and Natural Sciences
- Institute of Research in Energy Technologies and Advanced Materials (IITEMA)
- National University of Rio Cuarto (UNRC)-National Council of Scientific and Technical Research (CONICET)
- X5804ZAB Rio Cuarto
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223
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Zhong J, Yang Y, Liao L, Zhang C. Matrix stiffness-regulated cellular functions under different dimensionalities. Biomater Sci 2020; 8:2734-2755. [DOI: 10.1039/c9bm01809c] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The microenvironments that cells encounter with in vitro.
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Affiliation(s)
- Jiajun Zhong
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instruments (Sun Yat-sen University)
- School of Biomedical Engineering
- Sun Yat-Sen University
- Guangzhou
- P. R. China
| | - Yuexiong Yang
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instruments (Sun Yat-sen University)
- School of Biomedical Engineering
- Sun Yat-Sen University
- Guangzhou
- P. R. China
| | - Liqiong Liao
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering
- Biomaterials Research Center
- School of Biomedical Engineering
- Southern Medical University
- Guangzhou
| | - Chao Zhang
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instruments (Sun Yat-sen University)
- School of Biomedical Engineering
- Sun Yat-Sen University
- Guangzhou
- P. R. China
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224
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Xin S, Gregory CA, Alge DL. Interplay between degradability and integrin signaling on mesenchymal stem cell function within poly(ethylene glycol) based microporous annealed particle hydrogels. Acta Biomater 2020; 101:227-236. [PMID: 31711899 PMCID: PMC6960331 DOI: 10.1016/j.actbio.2019.11.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 11/05/2019] [Accepted: 11/06/2019] [Indexed: 12/25/2022]
Abstract
Microporous annealed particle (MAP) hydrogels are promising materials for delivering therapeutic cells. It has previously been shown that spreading and mechanosensing activation of human mesenchymal stem cells (hMSCs) incorporated in these materials can be modulated by tuning the modulus of the microgel particle building blocks. However, the effects of degradability and functionalization with different integrin-binding peptides on cellular responses has not been explored. In this work, RGDS functionalized and enzymatically degradable poly(ethylene glycol) (PEG) microgels were annealed into MAP hydrogels via thiol-ene click chemistry and photopolymerization. During cell-mediated degradation, the microgel surfaces were remodeled to wrinkles or ridges, but the scaffold integrity was maintained. Moreover, cell spreading, proliferation, and secretion of extracellular matrix proteins were significantly enhanced in faster matrix metalloproteinase degrading (KCGPQGIWGQCK) MAP hydrogels compared to non-degradable controls after 8 days of culture. We subsequently evaluated paracrine activity by hMSCs seeded in the MAP hydrogels functionalized with either RGDS or c(RRETAWA), which is specific for α5β1 integrins, and evaluated the interplay between degradability and integrin-mediated signaling. Importantly, c(RRETAWA) functionalization upregulated secretion of bone morphogenetic protein-2 overall and on a per cell basis, but this effect was critically dependent on microgel degradability. In contrast, RGDS functionalization led to higher overall vascular endothelial growth factor secretion in degradable scaffolds due to the high cell number. These results demonstrate that integrin-binding peptides can modulate hMSC behavior in PEG-based MAP hydrogels, but the results strongly depend on the susceptibility of the microgel building blocks to cell-mediated matrix remodeling. This relationship should be considered in future studies aiming to further develop these materials for stem cell delivery and tissue engineering applications. STATEMENT OF SIGNIFICANCE: Microporous annealed particle (MAP) hydrogels are attracting increasing interest for tissue repair and regeneration and have shown superior results compared to conventional hydrogels in multiple applications. Here, we studied the impact of MAP hydrogel degradability and functionalization with different integrin-binding peptides on human mesenchymal stem cells (hMSCs) that were incorporated during particle annealing. Degradability was found to improve cell growth, spreading, and extracellular matrix production regardless of the integrin-binding peptide. Moreover, in degradable MAP hydrogels the integrin-binding peptide c(RRETAWA) was found to increase osteogenic protein expression by hMSCs compared to RGDS-functionalized MAP hydrogels. These results have important implications for the development of a MAP hydrogel-based hMSC delivery system for bone tissue engineering.
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Affiliation(s)
- Shangjing Xin
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843 USA
| | - Carl A Gregory
- Department of Molecular and Cellular Medicine, Institute for Regenerative Medicine Texas A&M Health Science Center, College Station, TX, 77807 USA
| | - Daniel L Alge
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843 USA; Department of Materials Science and Engineering, Texas A&M University, College Station, TX, 77843 USA.
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225
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Ashworth JC, Thompson JL, James JR, Slater CE, Pijuan-Galitó S, Lis-Slimak K, Holley RJ, Meade KA, Thompson A, Arkill KP, Tassieri M, Wright AJ, Farnie G, Merry CLR. Peptide gels of fully-defined composition and mechanics for probing cell-cell and cell-matrix interactions in vitro. Matrix Biol 2020; 85-86:15-33. [PMID: 31295578 PMCID: PMC7610915 DOI: 10.1016/j.matbio.2019.06.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/28/2019] [Accepted: 06/24/2019] [Indexed: 01/14/2023]
Abstract
Current materials used for in vitro 3D cell culture are often limited by their poor similarity to human tissue, batch-to-batch variability and complexity of composition and manufacture. Here, we present a "blank slate" culture environment based on a self-assembling peptide gel free from matrix motifs. The gel can be customised by incorporating matrix components selected to match the target tissue, with independent control of mechanical properties. Therefore the matrix components are restricted to those specifically added, or those synthesised by encapsulated cells. The flexible 3D culture platform provides full control over biochemical and physical properties, allowing the impact of biochemical composition and tissue mechanics to be separately evaluated in vitro. Here, we demonstrate that the peptide gels support the growth of a range of cells including human induced pluripotent stem cells and human cancer cell lines. Furthermore, we present proof-of-concept that the peptide gels can be used to build disease-relevant models. Controlling the peptide gelator concentration allows peptide gel stiffness to be matched to normal breast (<1 kPa) or breast tumour tissue (>1 kPa), with higher stiffness favouring the viability of breast cancer cells over normal breast cells. In parallel, the peptide gels may be modified with matrix components relevant to human breast, such as collagen I and hyaluronan. The choice and concentration of these additions affect the size, shape and organisation of breast epithelial cell structures formed in co-culture with fibroblasts. This system therefore provides a means of unravelling the individual influences of matrix, mechanical properties and cell-cell interactions in cancer and other diseases.
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Affiliation(s)
- J C Ashworth
- Stem Cell Glycobiology Group, Division of Cancer & Stem Cells, School of Medicine, University of Nottingham, UK; Manchester Cancer Research Centre, Division of Molecular & Clinical Cancer Sciences, University of Manchester, UK.
| | - J L Thompson
- Stem Cell Glycobiology Group, Division of Cancer & Stem Cells, School of Medicine, University of Nottingham, UK
| | - J R James
- Stem Cell Glycobiology Group, Division of Cancer & Stem Cells, School of Medicine, University of Nottingham, UK
| | - C E Slater
- Stem Cell Glycobiology Group, Division of Cancer & Stem Cells, School of Medicine, University of Nottingham, UK
| | - S Pijuan-Galitó
- Stem Cell Glycobiology Group, Division of Cancer & Stem Cells, School of Medicine, University of Nottingham, UK; Laboratory of Biophysics and Surface Analysis, School of Pharmacy, University of Nottingham, UK
| | - K Lis-Slimak
- Stem Cell Glycobiology Group, Division of Cancer & Stem Cells, School of Medicine, University of Nottingham, UK
| | - R J Holley
- Stem Cell and Neurotherapies Group, University of Manchester, UK
| | - K A Meade
- Office of Business Relations, Faculty of Biology, Medicine and Health, University of Manchester, UK
| | - A Thompson
- Division of Cancer & Stem Cells, School of Medicine, University of Nottingham, UK
| | - K P Arkill
- Division of Cancer & Stem Cells, School of Medicine, University of Nottingham, UK
| | - M Tassieri
- Division of Biomedical Engineering, School of Engineering, University of Glasgow, UK
| | - A J Wright
- Optics and Photonics Research Group, Faculty of Engineering, University of Nottingham, UK
| | - G Farnie
- Manchester Cancer Research Centre, Division of Molecular & Clinical Cancer Sciences, University of Manchester, UK; SGC, Botnar Research Centre, NDORMS, University of Oxford, UK.
| | - C L R Merry
- Stem Cell Glycobiology Group, Division of Cancer & Stem Cells, School of Medicine, University of Nottingham, UK.
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226
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Martin AD, Wojciechowski JP, Du EY, Rawal A, Stefen H, Au CG, Hou L, Cranfield CG, Fath T, Ittner LM, Thordarson P. Decoupling the effects of hydrophilic and hydrophobic moieties at the neuron-nanofibre interface. Chem Sci 2019; 11:1375-1382. [PMID: 34123262 PMCID: PMC8148083 DOI: 10.1039/c9sc05686f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Peptide-based nanofibres are a versatile class of tunable materials with applications in optoelectronics, sensing and tissue engineering. However, the understanding of the nanofibre surface at the molecular level is limited. Here, a series of homologous dilysine–diphenylalnine tetrapeptides were synthesised and shown to self-assemble into water-soluble nanofibres. Despite the peptide nanofibres displaying similar morphologies, as evaluated through atomic force microscopy and neutron scattering, significant differences were observed in their ability to support sensitive primary neurons. Contact angle and labelling experiments revealed that differential presentation of lysine moieties at the fibre surface did not affect neuronal viability; however the mobility of phenylalanine residues at the nanofibre surface, elucidated through solid- and gel-state NMR studies and confirmed through tethered bilayer lipid membrane experiments, was found to be the determining factor in governing the suitability of a given peptide as a scaffold for primary neurons. This work offers new insights into characterising and controlling the nanofibre surface at the molecular level. The mobility of hydrophobic moieties at a peptide nanofibre surface determines its suitability as a scaffold for sensitive primary cells.![]()
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Affiliation(s)
- Adam D Martin
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University Sydney NSW 2109 Australia
| | | | - Eric Y Du
- School of Chemistry, The Australian Centre for Nanomedicine, The ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, University of New South Wales Sydney NSW 2052 Australia
| | - Aditya Rawal
- NMR Facility, Mark Wainwright Analytical Centre, The University of New South Wales Sydney 2052 New South Wales Australia
| | - Holly Stefen
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University Sydney NSW 2109 Australia
| | - Carol G Au
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University Sydney NSW 2109 Australia
| | - Liming Hou
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University Sydney NSW 2109 Australia
| | - Charles G Cranfield
- School of Life Sciences, University of Technology Sydney Ultimo NSW 2007 Australia
| | - Thomas Fath
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University Sydney NSW 2109 Australia
| | - Lars M Ittner
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University Sydney NSW 2109 Australia
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine, The ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, University of New South Wales Sydney NSW 2052 Australia
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227
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Qazi TH, Mooney DJ, Duda GN, Geissler S. Niche-mimicking interactions in peptide-functionalized 3D hydrogels amplify mesenchymal stromal cell paracrine effects. Biomaterials 2019; 230:119639. [PMID: 31776021 DOI: 10.1016/j.biomaterials.2019.119639] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 11/14/2019] [Accepted: 11/18/2019] [Indexed: 02/07/2023]
Abstract
Cells encounter complex environments in vivo where they interact with the extracellular matrix, neighboring cells, and soluble cues, which together influence their fate and function. However, the interplay of these interactions and their collective impact on the regenerative effects of mesenchymal stromal cells (MSCs) remains insufficiently explored. Here, we show that 3D culture in microporous (~125 μm) hydrogels that passively promote cell-cell interactions sensitizes MSCs to growth factors, particularly to IGF-1. IGF-1 enhances MSC paracrine secretion activity, and application of secreted factors to myoblasts potently stimulates their migration and differentiation. In contrast, the paracrine activity of MSCs encapsulated in nanoporous (~10 nm) hydrogels remain unchanged. Blocking N-cadherin on MSCs abrogates the stimulatory effects of IGF-1 in microporous but not nanoporous hydrogels. The role of N-cadherin in regulating MSC function is further clarified by functionalizing alginates with the HAVDI peptide sequence that is derived from the extracellular domain of N-cadherin and that acts to mimic cell-cell interactions. MSCs encapsulated in nanoporous HAVDI-gels, but not in gels functionalized with a scrambled sequence, show heightened paracrine activity in response to IGF-1. These findings reveal how interactions with the matrix, neighboring cells, and soluble factors impact and maximize the regenerative potential of MSCs.
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Affiliation(s)
- Taimoor H Qazi
- Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany; Berlin-Brandenburg Center for Regenerative Therapies, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany; Department of Bioengineering, University of Pennsylvania, 210 South 33rd Street, Philadelphia, 19104, USA
| | - David J Mooney
- John A. Paulson School of Engineering and Applied Sciences, and Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, 02138, USA
| | - Georg N Duda
- Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany; Berlin-Brandenburg Center for Regenerative Therapies, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany; Charité Universitätsmedizin Berlin, Berlin Institute of Health Center for Regenerative Therapies, Louisa-Karsch-Str. 2, 10178, Berlin, Germany
| | - Sven Geissler
- Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany; Berlin-Brandenburg Center for Regenerative Therapies, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany; Charité Universitätsmedizin Berlin, Berlin Institute of Health Center for Regenerative Therapies, Louisa-Karsch-Str. 2, 10178, Berlin, Germany.
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228
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Holloway JL. Stepping into the Next Dimension of Biomaterial Design. Trends Biotechnol 2019; 37:1276-1278. [PMID: 31648797 DOI: 10.1016/j.tibtech.2019.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 10/07/2019] [Indexed: 11/15/2022]
Abstract
Recapitulating the dynamic spatiotemporal behavior of the extracellular matrix using biomaterials is an ongoing challenge. A recent breakthrough by Shadish et al. demonstrates the use of sortase-mediated transpeptidation to site-specifically modify proteins with a range of chemical motifs. Modified proteins were immobilized within biomaterials with high spatiotemporal control and resulted in localized bioactivity.
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Affiliation(s)
- Julianne L Holloway
- Chemical Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ 85287, USA.
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229
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Aberrant mechanosensing in injured intervertebral discs as a result of boundary-constraint disruption and residual-strain loss. Nat Biomed Eng 2019; 3:998-1008. [PMID: 31611678 PMCID: PMC6899202 DOI: 10.1038/s41551-019-0458-4] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 08/28/2019] [Indexed: 12/21/2022]
Abstract
In fibrous tissues, pre-stressed boundary constraints at bone interfaces instil residual strain throughout the tissue, even when unloaded. For example, internal swelling pressures in the central nucleus pulposus of the intervertebral disc generate pre-strain in the outer annulus fibrosus. With injury and depressurization, these residual strains are lost. Here, we show that the loss of residual strains in the intervertebral disc alters the microenvironment and instigates aberrant tissue remodelling and the adoption of atypical cellular phenotypes. By using puncture surgery of the annulus fibrosus in rabbits, ex vivo puncture experiments, and electrospun nanofibrous scaffolds recapitulating evolving boundary constraints, we show that the loss of residual strain promotes short-term apoptosis and the emergence of a fibrotic phenotype, that local fibre organization and cellular contractility mediate this process, and that the aberrant cellular changes could be abrogated by targeting the cell-mechanosensing machinery with small molecules. Our findings indicate that injury to dense connective tissues under pre-strain alters boundary constraints and residual strain, leading to aberrant mechanosensing, which in turn promotes disease progression.
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230
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Scott KE, Rychel K, Ranamukhaarachchi S, Rangamani P, Fraley SI. Emerging themes and unifying concepts underlying cell behavior regulation by the pericellular space. Acta Biomater 2019; 96:81-98. [PMID: 31176842 DOI: 10.1016/j.actbio.2019.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 05/28/2019] [Accepted: 06/04/2019] [Indexed: 12/29/2022]
Abstract
Cells reside in a complex three-dimensional (3D) microenvironment where physical, chemical, and architectural features of the pericellular space regulate important cellular functions like migration, differentiation, and morphogenesis. A major goal of tissue engineering is to identify which properties of the pericellular space orchestrate these emergent cell behaviors and how. In this review, we highlight recent studies at the interface of biomaterials and single cell biophysics that are lending deeper insight towards this goal. Advanced methods have enabled the decoupling of architectural and mechanical features of the microenvironment, revealing multiple mechanisms of adhesion and mechanosensing modulation by biomaterials. Such studies are revealing important roles for pericellular space degradability, hydration, and adhesion competition in cell shape, volume, and differentiation regulation. STATEMENT OF SIGNIFICANCE: Cell fate and function are closely regulated by the local extracellular microenvironment. Advanced methods at the interface of single cell biophysics and biomaterials have shed new light on regulators of cell-pericellular space interactions by decoupling more features of the complex pericellular milieu than ever before. These findings lend deeper mechanistic insight into how biomaterials can be designed to fine-tune outcomes like differentiation, migration, and collective morphogenesis.
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Affiliation(s)
- Kiersten E Scott
- Bioengineering, University of California San Diego Jacobs School of Engineering, 9500 Gilman Drive #0435, La Jolla, CA 92093, USA.
| | - Kevin Rychel
- Bioengineering, University of California San Diego Jacobs School of Engineering, 9500 Gilman Drive #0435, La Jolla, CA 92093, USA.
| | - Sural Ranamukhaarachchi
- Bioengineering, University of California San Diego Jacobs School of Engineering, 9500 Gilman Drive #0435, La Jolla, CA 92093, USA.
| | - Padmini Rangamani
- Mechanical and Aerospace Engineering, University of California San Diego Jacobs School of Engineering, 9500 Gilman Drive #0411, La Jolla, CA 92093, USA.
| | - Stephanie I Fraley
- Bioengineering, University of California San Diego Jacobs School of Engineering, 9500 Gilman Drive #0435, La Jolla, CA 92093, USA.
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231
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Galarraga JH, Burdick JA. Moving hydrogels to the fourth dimension. NATURE MATERIALS 2019; 18:914-915. [PMID: 31435068 DOI: 10.1038/s41563-019-0458-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
| | - Jason A Burdick
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA.
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232
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Li G, Wang H, Zhu Z, Fan JB, Tian Y, Meng J, Wang S. Photo-Irresponsive Molecule-Amplified Cell Release on Photoresponsive Nanostructured Surfaces. ACS APPLIED MATERIALS & INTERFACES 2019; 11:29681-29688. [PMID: 31361461 DOI: 10.1021/acsami.9b11957] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Cell manipulation has raised extensive concern owing to its underlying applications in numerous biological situations such as cell-matrix interaction, tissue engineering, and cell-based diagnosis. Generally, light is considered as a superior candidate for manipulating cells (e.g., cell release) due to their high spatiotemporal precision and non-invasion. However, it remains a big challenge to release cells with high efficiency due to their potential limitation of the light-triggered wettability transition on photoresponsive surfaces. In this study, we report a photoresponsive spiropyran-coated nanostructured surface that enables highly efficient release of cancer cells, amplified by the introduction of a photo-irresponsive molecule. On one hand, structural recognition stems from topological interaction between nanofractal surfaces and the protrusions of cancer cells. On the other, molecular recognition can be amplified by a photo-irresponsive and hydrophilic molecule by reducing the steric hindrance of photoresponsive components and resisting nonspecific cell adhesion. Therefore, this study may afford a novel avenue for developing advanced smart materials for high-quality biological analysis and clinical diagnosis.
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Affiliation(s)
- Guannan Li
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience , Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China
- University of the Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Hongyi Wang
- College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , P. R. China
| | - Zhongpeng Zhu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience , Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China
- University of the Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Jun-Bing Fan
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience , Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Ye Tian
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience , Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China
- University of the Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Jingxin Meng
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience , Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Shutao Wang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience , Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China
- University of the Chinese Academy of Sciences , Beijing 100049 , P. R. China
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233
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Huebsch N. Translational mechanobiology: Designing synthetic hydrogel matrices for improved in vitro models and cell-based therapies. Acta Biomater 2019; 94:97-111. [PMID: 31129361 DOI: 10.1016/j.actbio.2019.05.055] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 05/21/2019] [Accepted: 05/21/2019] [Indexed: 12/27/2022]
Abstract
Synthetic hydrogels have ideal physiochemical properties to serve as reductionist mimics of the extracellular matrix (ECM) for studies on cellular mechanosensing. These studies range from basic observation of correlations between ECM mechanics and cell fate changes to molecular dissection of the underlying mechanisms. Despite intensive work on hydrogels to study mechanobiology, many fundamental questions regarding mechanosensing remain unanswered. In this review, I first discuss historical motivation for studying cellular mechanobiology, and challenges impeding this effort. I next overview recent efforts to engineer hydrogel properties to study cellular mechanosensing. Finally, I focus on in vitro modeling and cell-based therapies as applications of hydrogels that will exploit our ability to create micro-environments with physiologically relevant elasticity and viscoelasticity to control cell biology. These translational applications will not only use our current understanding of mechanobiology but will also bring new tools to study the fundamental problem of how cells sense their mechanical environment. STATEMENT OF SIGNIFICANCE: Hydrogels are an important tool for understanding how our cells can sense their mechanical environment, and to exploit that understanding in regenerative medicine. In the current review, I discuss historical work linking mechanics to cell behavior in vitro, and highlight the role hydrogels played in allowing us to understand how cells monitor mechanical cues. I then highlight potential translational applications of hydrogels with mechanical properties similar to those of the tissues where cells normally reside in our bodies, and discuss how these types of studies can provide clues to help us enhance our understanding of mechanosensing.
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Affiliation(s)
- Nathaniel Huebsch
- Department of Biomedical Engineering, Washington University in Saint Louis, United States.
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234
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Qiao EL, Kumar S, Schaffer DV. Mastering their own fates through the matrix. NATURE MATERIALS 2019; 18:779-780. [PMID: 31332317 PMCID: PMC6894983 DOI: 10.1038/s41563-019-0429-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
With their ability to give rise to many different cell types, stem cells have long been a target of scientists who seek to achieve control over their differentiation. New evidence suggests that stem cells influence their own fates through protein deposition and physical remodelling of their microenvironment.
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Affiliation(s)
- Eric L Qiao
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, USA
| | - Sanjay Kumar
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, USA.
- Department of Bioengineering, University of California, Berkeley, CA, USA.
| | - David V Schaffer
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, USA.
- Department of Bioengineering, University of California, Berkeley, CA, USA.
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235
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236
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Chen Y, Lee K, Kawazoe N, Yang Y, Chen G. PLGA–collagen–ECM hybrid scaffolds functionalized with biomimetic extracellular matrices secreted by mesenchymal stem cells during stepwise osteogenesis-co-adipogenesis. J Mater Chem B 2019; 7:7195-7206. [DOI: 10.1039/c9tb01959f] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Development of an in vitro 3D model that reflects the dynamic remodeling of ECMs during simultaneous osteogenesis and adipogenesis of hMSCs.
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Affiliation(s)
- Yazhou Chen
- Research Center of Functional Materials
- National Institute for Materials Science
- Tsukuba
- Japan
- Department of Materials Science and Engineering
| | - Kyubae Lee
- Research Center of Functional Materials
- National Institute for Materials Science
- Tsukuba
- Japan
- Department of Materials Science and Engineering
| | - Naoki Kawazoe
- Research Center of Functional Materials
- National Institute for Materials Science
- Tsukuba
- Japan
| | - Yingnan Yang
- Graduate School of Life and Environmental Science
- University of Tsukuba
- Tsukuba
- Japan
| | - Guoping Chen
- Research Center of Functional Materials
- National Institute for Materials Science
- Tsukuba
- Japan
- Department of Materials Science and Engineering
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