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Wang H, Xia Y, Zhang Z, Xie Z. 3D gradient printing based on digital light processing. J Mater Chem B 2023; 11:8883-8896. [PMID: 37694441 DOI: 10.1039/d3tb00763d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
3D gradient printing is a type of fabrication technique that builds three-dimensional objects with gradually changing properties. Gradient digital light processing based 3D printing has garnered considerable attention in recent years. This function-oriented technology precisely manipulates the performance of different positions of materials and prints them as a monolithic structure to realize specific functions. This review presents a conceptual understanding of gradient properties, covering an overview of current techniques and materials that can produce gradient structures, as well as their limitations and challenges. The principle of digital light processing (DLP) technology and feasible strategies for 3D gradient printing to overcome any barriers are also presented. Additionally, this review discusses the promising future of 4D bioprinting systems based on DLP printing.
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Affiliation(s)
- Han Wang
- Chien-Shiung Wu College, Southeast University, Nanjing, 211102, China
- School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
- National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing, 210096, China
| | - Yu Xia
- Chien-Shiung Wu College, Southeast University, Nanjing, 211102, China
- National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing, 210096, China
- School of Life Science and Technology, Southeast University, Nanjing, 210096, China
| | - Zixuan Zhang
- School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
- National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing, 210096, China
| | - Zhuoying Xie
- School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
- National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing, 210096, China
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2
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Blatchley MR, Anseth KS. Middle-out methods for spatiotemporal tissue engineering of organoids. NATURE REVIEWS BIOENGINEERING 2023; 1:329-345. [PMID: 37168734 PMCID: PMC10010248 DOI: 10.1038/s44222-023-00039-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 02/03/2023] [Indexed: 05/13/2023]
Abstract
Organoids recapitulate many aspects of the complex three-dimensional (3D) organization found within native tissues and even display tissue and organ-level functionality. Traditional approaches to organoid culture have largely employed a top-down tissue engineering strategy, whereby cells are encapsulated in a 3D matrix, such as Matrigel, alongside well-defined biochemical cues that direct morphogenesis. However, the lack of spatiotemporal control over niche properties renders cellular processes largely stochastic. Therefore, bottom-up tissue engineering approaches have evolved to address some of these limitations and focus on strategies to assemble tissue building blocks with defined multi-scale spatial organization. However, bottom-up design reduces the capacity for self-organization that underpins organoid morphogenesis. Here, we introduce an emerging framework, which we term middle-out strategies, that relies on existing design principles and combines top-down design of defined synthetic matrices that support proliferation and self-organization with bottom-up modular engineered intervention to limit the degrees of freedom in the dynamic process of organoid morphogenesis. We posit that this strategy will provide key advances to guide the growth of organoids with precise geometries, structures and function, thereby facilitating an unprecedented level of biomimicry to accelerate the utility of organoids to more translationally relevant applications.
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Affiliation(s)
- Michael R. Blatchley
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO USA
| | - Kristi S. Anseth
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO USA
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3
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Rajawasam CWH, Tran C, Weeks M, McCoy KS, Ross-Shannon R, Dodo OJ, Sparks JL, Hartley CS, Konkolewicz D. Chemically Fueled Reinforcement of Polymer Hydrogels. J Am Chem Soc 2023; 145:5553-5560. [PMID: 36848549 DOI: 10.1021/jacs.3c00668] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Carbodiimide-fueled anhydride bond formation has been used to enhance the mechanical properties of permanently crosslinked polymer networks, giving materials that exhibit transitions from soft gels to covalently reinforced gels, eventually returning to the original soft gels. Temporary changes in mechanical properties result from a transient network of anhydride crosslinks, which eventually dissipate by hydrolysis. Over an order of magnitude increase in the storage modulus is possible through carbodiimide fueling. The time-dependent mechanical properties can be modulated by the concentration of carbodiimide, temperature, and primary chain architecture. Because the materials remain rheological solids, new material functions such as temporally controlled adhesion and rewritable spatial patterns of mechanical properties have been realized.
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Affiliation(s)
- Chamoni W H Rajawasam
- Department of Chemistry and Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - Corvo Tran
- Department of Chemistry and Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - Michael Weeks
- Instrumentation Laboratory, Miami University, Oxford, Ohio 45056, United States
| | - Kathleen S McCoy
- Department of Chemical, Paper, and Biomedical Engineering, Miami University, Oxford, Ohio 45056, United States
| | - Robert Ross-Shannon
- Department of Chemical, Paper, and Biomedical Engineering, Miami University, Oxford, Ohio 45056, United States
| | - Obed J Dodo
- Department of Chemistry and Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - Jessica L Sparks
- Department of Chemical, Paper, and Biomedical Engineering, Miami University, Oxford, Ohio 45056, United States
| | - C Scott Hartley
- Department of Chemistry and Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - Dominik Konkolewicz
- Department of Chemistry and Biochemistry, Miami University, Oxford, Ohio 45056, United States
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4
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Muzzio N, Eduardo Martinez-Cartagena M, Romero G. Soft nano and microstructures for the photomodulation of cellular signaling and behavior. Adv Drug Deliv Rev 2022; 190:114554. [PMID: 36181993 DOI: 10.1016/j.addr.2022.114554] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 08/25/2022] [Accepted: 09/23/2022] [Indexed: 01/24/2023]
Abstract
Photoresponsive soft materials are everywhere in the nature, from human's retina tissues to plants, and have been the inspiration for engineers in the development of modern biomedical materials. Light as an external stimulus is particularly attractive because it is relatively cheap, noninvasive to superficial biological tissues, can be delivered contactless and offers high spatiotemporal control. In the biomedical field, soft materials that respond to long wavelength or that incorporate a photon upconversion mechanism are desired to overcome the limited UV-visible light penetration into biological tissues. Upon light exposure, photosensitive soft materials respond through mechanisms of isomerization, crosslinking or cleavage, hyperthermia, photoreactions, electrical current generation, among others. In this review, we discuss the most recent applications of photosensitive soft materials in the modulation of cellular behavior, for tissue engineering and regenerative medicine, in drug delivery and for phototherapies.
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Affiliation(s)
- Nicolas Muzzio
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA.
| | | | - Gabriela Romero
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA.
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5
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Wang Q, Wang Z, Zhang D, Gu J, Ma Y, Zhang Y, Chen J. Circular Patterns of Dynamic Covalent Hydrogels with Gradient Stiffness for Screening of the Stem Cell Microenvironment. ACS APPLIED MATERIALS & INTERFACES 2022; 14:47461-47471. [PMID: 36240467 DOI: 10.1021/acsami.2c14924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
As extracellular matrix (ECM) mimetic materials, hydrogels have been widely used for broad biomedical applications. However, with so many physical or chemical cues in the matrix that regulate cell behaviors or functions, it remains challenging to design a customizable hydrogel with the desired properties on demand. In the current study, we aim to establish a circular-patterned hydrogel model with gradient stiffness for screening the most favorable ECM environment for specific cells or certain application purposes. First, six types of hydrogels with a wide stiffness range of 1.2-28.9 kPa were prepared by dynamic covalent cross-linking between gelatin derivatives and oxidized hyaluronic acid. Taking advantage of their instantaneous self-healing property from dynamic chemistry, the hydrogels were further spliced into one whole piece of circular-patterned hydrogel. When rabbit bone marrow mesenchymal stem cells were seeded in the center, the influences of matrix stiffness on the regulation of stem cell adhesion, migration, and differentiation were directly observed and compared under one visual field. In addition, these hydrogels all possessed good biocompatibility, degradability, and injectability, showing great potential for tissue-engineering-related applications.
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Affiliation(s)
- Qimeng Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Ziyan Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Difei Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Jieyu Gu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Yongxin Ma
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Yan Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Jinghua Chen
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, P. R. China
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6
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Song D, Kotz-Helmer F, Rapp B, Rühe J. Substrate-Independent Maskless Writing of Functionalized Microstructures Using CHic Chemistry and Digital Light Processing. ACS APPLIED MATERIALS & INTERFACES 2022; 14:50288-50295. [PMID: 36288785 PMCID: PMC9650689 DOI: 10.1021/acsami.2c12000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 09/09/2022] [Indexed: 06/16/2023]
Abstract
Maskless photolithography based on digital light processing (DLP) is an attractive technique for the rapid, flexible, and cost-effective fabrication of complex structures with arbitrary surface profiles on the microscale. In this work, we introduce a new material system for structure formation by DLP that is based on photoreactive polymers for the local and light-induced C,H-insertion cross-linking (CHic). This approach allows a simple and versatile generation of microstructures with a broad spectrum of geometries and chemistries irrespective of the nature of the chosen substrates and thus allows direct writing of surface functionalization patterns with high spatial control. The CHicable prepolymer is first coated on a substrate to form a solvent-free (glassy) film, and then the DLP system patterns the light with arbitrary shape to induce local cross-linking of the prepolymer. Using this method, the desired structures with complex features with a lateral resolution of several microns and a topography of tens of nanometers could be fabricated within 30 s. Furthermore, the universal applicability of the CHic reaction enables the printing on a wide variety of substrates, which greatly broadens the using scenarios of this printing approach.
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Affiliation(s)
- Dan Song
- livMatS
@ Freiburg Center for Interactive Materials and Bioinspired Technologies
(FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
- Department
of Microsystems Engineering (IMTEK), University
of Freiburg, Georges-Köhler-Allee
103, 79110 Freiburg, Germany
| | - Frederik Kotz-Helmer
- Department
of Microsystems Engineering (IMTEK), University
of Freiburg, Georges-Köhler-Allee
103, 79110 Freiburg, Germany
| | - Bastian Rapp
- livMatS
@ Freiburg Center for Interactive Materials and Bioinspired Technologies
(FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
- Department
of Microsystems Engineering (IMTEK), University
of Freiburg, Georges-Köhler-Allee
103, 79110 Freiburg, Germany
| | - Jürgen Rühe
- livMatS
@ Freiburg Center for Interactive Materials and Bioinspired Technologies
(FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
- Department
of Microsystems Engineering (IMTEK), University
of Freiburg, Georges-Köhler-Allee
103, 79110 Freiburg, Germany
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7
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Luneva O, Olekhnovich R, Uspenskaya M. Bilayer Hydrogels for Wound Dressing and Tissue Engineering. Polymers (Basel) 2022; 14:polym14153135. [PMID: 35956650 PMCID: PMC9371176 DOI: 10.3390/polym14153135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/26/2022] [Accepted: 07/27/2022] [Indexed: 11/30/2022] Open
Abstract
A large number of different skin diseases such as hits, acute, and chronic wounds dictate the search for alternative and effective treatment options. The wound healing process requires a complex approach, the key step of which is the choice of a dressing with controlled properties. Hydrogel-based scaffolds can serve as a unique class of wound dressings. Presented on the commercial market, hydrogel wound dressings are not found among proposals for specific cases and have a number of disadvantages—toxicity, allergenicity, and mechanical instability. Bilayer dressings are attracting great attention, which can be combined with multifunctional properties, high criteria for an ideal wound dressing (antimicrobial properties, adhesion and hemostasis, anti-inflammatory and antioxidant effects), drug delivery, self-healing, stimulus manifestation, and conductivity, depending on the preparation and purpose. In addition, advances in stem cell biology and biomaterials have enabled the design of hydrogel materials for skin tissue engineering. To improve the heterogeneity of the cell environment, it is possible to use two-layer functional gradient hydrogels. This review summarizes the methods and application advantages of bilayer dressings in wound treatment and skin tissue regeneration. Bilayered hydrogels based on natural as well as synthetic polymers are presented. The results of the in vitro and in vivo experiments and drug release are also discussed.
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8
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Chalard AE, Dixon AW, Taberner AJ, Malmström J. Visible-Light Stiffness Patterning of GelMA Hydrogels Towards In Vitro Scar Tissue Models. Front Cell Dev Biol 2022; 10:946754. [PMID: 35865624 PMCID: PMC9294371 DOI: 10.3389/fcell.2022.946754] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 06/20/2022] [Indexed: 11/30/2022] Open
Abstract
Variations in mechanical properties of the extracellular matrix occurs in various processes, such as tissue fibrosis. The impact of changes in tissue stiffness on cell behaviour are studied in vitro using various types of biomaterials and methods. Stiffness patterning of hydrogel scaffolds, through the use of stiffness gradients for instance, allows the modelling and studying of cellular responses to fibrotic mechanisms. Gelatine methacryloyl (GelMA) has been used extensively in tissue engineering for its inherent biocompatibility and the ability to precisely tune its mechanical properties. Visible light is now increasingly employed for crosslinking GelMA hydrogels as it enables improved cell survival when performing cell encapsulation. We report here, the photopatterning of mechanical properties of GelMA hydrogels with visible light and eosin Y as the photoinitiator using physical photomasks and projection with a digital micromirror device. Using both methods, binary hydrogels with areas of different stiffnesses and hydrogels with stiffness gradients were fabricated. Their mechanical properties were characterised using force indentation with atomic force microscopy, which showed the efficiency of both methods to spatially pattern the elastic modulus of GelMA according to the photomask or the projected pattern. Crosslinking through projection was also used to build constructs with complex shapes. Overall, this work shows the feasibility of patterning the stiffness of GelMA scaffolds, in the range from healthy to pathological stiffness, with visible light. Consequently, this method could be used to build in vitro models of healthy and fibrotic tissue and study the cellular behaviours involved at the interface between the two.
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Affiliation(s)
- Anaïs E. Chalard
- Department of Chemical and Materials Engineering, Faculty of Engineering, The University of Auckland, Auckland, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand
- *Correspondence: Anaïs E. Chalard, ; Jenny Malmström,
| | - Alexander W. Dixon
- The Auckland Bioengineering Institute (ABI), The University of Auckland, Auckland, New Zealand
| | - Andrew J. Taberner
- The Auckland Bioengineering Institute (ABI), The University of Auckland, Auckland, New Zealand
- Department of Engineering Science, Faculty of Engineering, The University of Auckland, Auckland, New Zealand
| | - Jenny Malmström
- Department of Chemical and Materials Engineering, Faculty of Engineering, The University of Auckland, Auckland, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand
- *Correspondence: Anaïs E. Chalard, ; Jenny Malmström,
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9
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Delgado SM, Norris SCP, Kasko AM. Photodegradation actuated shape‐changing hydrogels. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20210787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Stephanie M. Delgado
- Department of Bioengineering, California Nanosystems Institute University of California Los Angeles Los Angeles California USA
| | - Sam C. P. Norris
- Department of Bioengineering, California Nanosystems Institute University of California Los Angeles Los Angeles California USA
| | - Andrea M. Kasko
- Department of Bioengineering, California Nanosystems Institute University of California Los Angeles Los Angeles California USA
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10
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Shahi S, Roghani-Mamaqani H, Talebi S, Mardani H. Stimuli-responsive destructible polymeric hydrogels based on irreversible covalent bond dissociation. Polym Chem 2022. [DOI: 10.1039/d1py01066b] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Covalently crosslinked stimuli-destructible hydrogels with the ability of irreversible bond dissociation have attracted great attentions due to their biodegradability, stability against hydrolysis, and controlled solubility upon insertion of desired triggers.
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Affiliation(s)
- Sina Shahi
- Faculty of Polymer Engineering, Sahand University of Technology, PO Box: 51335-1996, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, PO Box: 51335-1996, Tabriz, Iran
| | - Hossein Roghani-Mamaqani
- Faculty of Polymer Engineering, Sahand University of Technology, PO Box: 51335-1996, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, PO Box: 51335-1996, Tabriz, Iran
| | - Saeid Talebi
- Faculty of Polymer Engineering, Sahand University of Technology, PO Box: 51335-1996, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, PO Box: 51335-1996, Tabriz, Iran
| | - Hanieh Mardani
- Faculty of Polymer Engineering, Sahand University of Technology, PO Box: 51335-1996, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, PO Box: 51335-1996, Tabriz, Iran
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11
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Photopolymerizable chitosan hydrogels with improved strength and 3D printability. Int J Biol Macromol 2021; 193:109-116. [PMID: 34699888 DOI: 10.1016/j.ijbiomac.2021.10.137] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/08/2021] [Accepted: 10/18/2021] [Indexed: 11/22/2022]
Abstract
Chitosan hydrogel have presented great potential in biomedical applications due to its biocompatibility, biodegradability and characteristic similarity to native extracellular matrix. However, 3D printing of chitosan hydrogel often suffers from weak formability and poor mechanical property, limiting its further utilization. In this study, a novel chiotsan hydrogel is prepared from maleic chitosan (MCS) with high acrylate group substitution (i.e. 1.67) and thiol-terminated poly (ethylene glycol) (TPEG) via step-chain growth photopolymerization approach, which can overcome significantly the oxygen inhibition effect. Rheological property, microstructure, mechanical properties and in vitro degradation can be regulated by changing the thiol/acrylate molar ratio. There is strong intermolecular action between MCS and TPEG. Notably, photopolymerized MCS/TPEG hydrogel exhibited ~2-fold and ~ 10-fold increase in gelling rate and compressive strength, respectively, compared to pure chitosan hydrogel. Based on these results, 3D printing of chitosan hydrogel fabricated by simultaneous extrusion deposition and thiol-acrylate photopolymerization, demonstrates printing accuracy and improved scaffold stability. This 3D printing of chitosan hydrogel shows no cytotoxicity and can support adherence of L929 cells, suggesting its potential in biomedical applications such as tissue engineering and drug delivery.
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12
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Ender AM, Kaygisiz K, Räder HJ, Mayer FJ, Synatschke CV, Weil T. Cell-Instructive Surface Gradients of Photoresponsive Amyloid-like Fibrils. ACS Biomater Sci Eng 2021; 7:4798-4808. [PMID: 34515483 PMCID: PMC8512672 DOI: 10.1021/acsbiomaterials.1c00889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Gradients of bioactive molecules play a crucial role in various biological processes like vascularization, tissue regeneration, or cell migration. To study these complex biological systems, it is necessary to control the concentration of bioactive molecules on their substrates. Here, we created a photochemical strategy to generate gradients using amyloid-like fibrils as scaffolds functionalized with a model epitope, that is, the integrin-binding peptide RGD, to modulate cell adhesion. The self-assembling β-sheet forming peptide (CKFKFQF) was connected to the RGD epitope via a photosensitive nitrobenzyl linker and assembled into photoresponsive nanofibrils. The fibrils were spray-coated on glass substrates and macroscopic gradients were generated by UV-light over a centimeter-scale. We confirmed the gradient formation using matrix-assisted laser desorption ionization mass spectroscopy imaging (MALDI-MSI), which directly visualizes the molecular species on the surface. The RGD gradient was used to instruct cells. In consequence, A549 adapted their adhesion properties in dependence of the RGD-epitope density.
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Affiliation(s)
- Adriana Maria Ender
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Kübra Kaygisiz
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Hans-Joachim Räder
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Franz J Mayer
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Christopher V Synatschke
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Tanja Weil
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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13
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Sugimoto K, Hayashi M, Kawarazaki I, Ito S. Versatile tensile and fracture behaviors of dual cross-linked elastomers by postpreparation photo tuning of local cross-link density. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Bouzin M, Zeynali A, Marini M, Sironi L, Scodellaro R, D’Alfonso L, Collini M, Chirico G. Multiphoton Laser Fabrication of Hybrid Photo-Activable Biomaterials. SENSORS 2021; 21:s21175891. [PMID: 34502787 PMCID: PMC8433654 DOI: 10.3390/s21175891] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 08/27/2021] [Accepted: 08/27/2021] [Indexed: 11/16/2022]
Abstract
The possibility to shape stimulus-responsive optical polymers, especially hydrogels, by means of laser 3D printing and ablation is fostering a new concept of “smart” micro-devices that can be used for imaging, thermal stimulation, energy transducing and sensing. The composition of these polymeric blends is an essential parameter to tune their properties as actuators and/or sensing platforms and to determine the elasto-mechanical characteristics of the printed hydrogel. In light of the increasing demand for micro-devices for nanomedicine and personalized medicine, interest is growing in the combination of composite and hybrid photo-responsive materials and digital micro-/nano-manufacturing. Existing works have exploited multiphoton laser photo-polymerization to obtain fine 3D microstructures in hydrogels in an additive manufacturing approach or exploited laser ablation of preformed hydrogels to carve 3D cavities. Less often, the two approaches have been combined and active nanomaterials have been embedded in the microstructures. The aim of this review is to give a short overview of the most recent and prominent results in the field of multiphoton laser direct writing of biocompatible hydrogels that embed active nanomaterials not interfering with the writing process and endowing the biocompatible microstructures with physically or chemically activable features such as photothermal activity, chemical swelling and chemical sensing.
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Affiliation(s)
- Margaux Bouzin
- Dipartimento di Fisica, Università degli studi di Milano-Bicocca, 20126 Milano, Italy; (M.B.); (A.Z.); (M.M.); (L.S.); (R.S.); (L.D.)
| | - Amirbahador Zeynali
- Dipartimento di Fisica, Università degli studi di Milano-Bicocca, 20126 Milano, Italy; (M.B.); (A.Z.); (M.M.); (L.S.); (R.S.); (L.D.)
| | - Mario Marini
- Dipartimento di Fisica, Università degli studi di Milano-Bicocca, 20126 Milano, Italy; (M.B.); (A.Z.); (M.M.); (L.S.); (R.S.); (L.D.)
| | - Laura Sironi
- Dipartimento di Fisica, Università degli studi di Milano-Bicocca, 20126 Milano, Italy; (M.B.); (A.Z.); (M.M.); (L.S.); (R.S.); (L.D.)
| | - Riccardo Scodellaro
- Dipartimento di Fisica, Università degli studi di Milano-Bicocca, 20126 Milano, Italy; (M.B.); (A.Z.); (M.M.); (L.S.); (R.S.); (L.D.)
| | - Laura D’Alfonso
- Dipartimento di Fisica, Università degli studi di Milano-Bicocca, 20126 Milano, Italy; (M.B.); (A.Z.); (M.M.); (L.S.); (R.S.); (L.D.)
| | - Maddalena Collini
- Dipartimento di Fisica, Università degli studi di Milano-Bicocca, 20126 Milano, Italy; (M.B.); (A.Z.); (M.M.); (L.S.); (R.S.); (L.D.)
- Institute for Applied Sciences and Intelligent Systems, CNR, 80078 Pozzuoli, Italy
- Correspondence: (M.C.); (G.C.)
| | - Giuseppe Chirico
- Dipartimento di Fisica, Università degli studi di Milano-Bicocca, 20126 Milano, Italy; (M.B.); (A.Z.); (M.M.); (L.S.); (R.S.); (L.D.)
- Institute for Applied Sciences and Intelligent Systems, CNR, 80078 Pozzuoli, Italy
- Correspondence: (M.C.); (G.C.)
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15
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Narasimhan BN, Horrocks MS, Malmström J. Hydrogels with Tunable Physical Cues and Their Emerging Roles in Studies of Cellular Mechanotransduction. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202100059] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Badri Narayanan Narasimhan
- Department of Chemical and Materials Engineering University of Auckland Private Bag 92019 Auckland 1142 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology Victoria University of Wellington PO Box 600 Wellington 6140 New Zealand
| | - Matthew S. Horrocks
- Department of Chemical and Materials Engineering University of Auckland Private Bag 92019 Auckland 1142 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology Victoria University of Wellington PO Box 600 Wellington 6140 New Zealand
| | - Jenny Malmström
- Department of Chemical and Materials Engineering University of Auckland Private Bag 92019 Auckland 1142 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology Victoria University of Wellington PO Box 600 Wellington 6140 New Zealand
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16
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Dessauge F, Schleder C, Perruchot MH, Rouger K. 3D in vitro models of skeletal muscle: myopshere, myobundle and bioprinted muscle construct. Vet Res 2021; 52:72. [PMID: 34011392 PMCID: PMC8136231 DOI: 10.1186/s13567-021-00942-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 04/15/2021] [Indexed: 12/25/2022] Open
Abstract
Typical two-dimensional (2D) culture models of skeletal muscle-derived cells cannot fully recapitulate the organization and function of living muscle tissues, restricting their usefulness in in-depth physiological studies. The development of functional 3D culture models offers a major opportunity to mimic the living tissues and to model muscle diseases. In this respect, this new type of in vitro model significantly increases our understanding of the involvement of the different cell types present in the formation of skeletal muscle and their interactions, as well as the modalities of response of a pathological muscle to new therapies. This second point could lead to the identification of effective treatments. Here, we report the significant progresses that have been made the last years to engineer muscle tissue-like structures, providing useful tools to investigate the behavior of resident cells. Specifically, we interest in the development of myopshere- and myobundle-based systems as well as the bioprinting constructs. The electrical/mechanical stimulation protocols and the co-culture systems developed to improve tissue maturation process and functionalities are presented. The formation of these biomimetic engineered muscle tissues represents a new platform to study skeletal muscle function and spatial organization in large number of physiological and pathological contexts.
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17
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Yang J, Zhang Y, Qin M, Cheng W, Wang W, Cao Y. Understanding and Regulating Cell-Matrix Interactions Using Hydrogels of Designable Mechanical Properties. J Biomed Nanotechnol 2021; 17:149-168. [PMID: 33785089 DOI: 10.1166/jbn.2021.3026] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Similar to natural tissues, hydrogels contain abundant water, so they are considered as promising biomaterials for studying the influence of the mechanical properties of extracellular matrices (ECM) on various cell functions. In recent years, the growing research on cellular mechanical response has revealed that many cell functions, including cell spreading, migration, tumorigenesis and differentiation, are related to the mechanical properties of ECM. Therefore, how cells sense and respond to the extracellular mechanical environment has gained considerable attention. In these studies, hydrogels are widely used as the in vitro model system. Hydrogels of tunable stiffness, viscoelasticity, degradability, plasticity, and dynamical properties have been engineered to reveal how cells respond to specific mechanical features. In this review, we summarize recent process in this research direction and specifically focus on the influence of the mechanical properties of the ECM on cell functions, how cells sense and respond to the extracellular mechanical environment, and approaches to adjusting the stiffness of hydrogels.
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Affiliation(s)
- Jiapeng Yang
- Key Laboratory of Intelligent Optical Sensing and Integration, National Laboratory of Solid State Microstructure, and Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Yu Zhang
- Key Laboratory of Intelligent Optical Sensing and Integration, National Laboratory of Solid State Microstructure, and Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Meng Qin
- Key Laboratory of Intelligent Optical Sensing and Integration, National Laboratory of Solid State Microstructure, and Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Wei Cheng
- Department of Oral Implantology Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210008, China
| | - Wei Wang
- Key Laboratory of Intelligent Optical Sensing and Integration, National Laboratory of Solid State Microstructure, and Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Yi Cao
- Key Laboratory of Intelligent Optical Sensing and Integration, National Laboratory of Solid State Microstructure, and Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
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18
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Norris SCP, Soto J, Kasko AM, Li S. Photodegradable Polyacrylamide Gels for Dynamic Control of Cell Functions. ACS APPLIED MATERIALS & INTERFACES 2021; 13:5929-5944. [PMID: 33502154 DOI: 10.1021/acsami.0c19627] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Cross-linked polyacrylamide hydrogels are commonly used in biotechnology and cell culture applications due to advantageous properties, such as the precise control of material stiffness and the attachment of cell adhesive ligands. However, the chemical and physical properties of polyacrylamide gels cannot be altered once fabricated. Here, we develop a photodegradable polyacrylamide gel system that allows for a dynamic control of polyacrylamide gel stiffness with exposure to light. Photodegradable polyacrylamide hydrogel networks are produced by copolymerizing acrylamide and a photocleavable ortho-nitrobenzyl (o-NB) bis-acrylate cross-linker. When the hydrogels are exposed to light, the o-NB cross-links cleave and the stiffness of the photodegradable polyacrylamide gels decreases. Further examination of the effect of dynamic stiffness changes on cell behavior reveals that in situ softening of the culture substrate leads to changes in cell behavior that are not observed when cells are cultured on presoftened gels, indicating that both dynamic and static mechanical environments influence cell fate. Notably, we observe significant changes in nuclear localization of YAP and cytoskeletal organization after in situ softening; these changes further depend on the type and concentration of cell adhesive proteins attached to the gel surface. By incorporating the simplicity and well-established protocols of standard polyacrylamide gel fabrication with the dynamic control of photodegradable systems, we can enhance the capability of polyacrylamide gels, thereby enabling cell biologists and engineers to study more complex cellular behaviors that were previously inaccessible using regular polyacrylamide gels.
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Affiliation(s)
- Sam C P Norris
- Department of Bioengineering, University of California Los Angeles, 410 Westwood Plaza, 5121 Engineering V, Los Angeles, California 90095, United States
| | - Jennifer Soto
- Department of Bioengineering, University of California Los Angeles, 410 Westwood Plaza, 5121 Engineering V, Los Angeles, California 90095, United States
| | - Andrea M Kasko
- Department of Bioengineering, University of California Los Angeles, 410 Westwood Plaza, 5121 Engineering V, Los Angeles, California 90095, United States
| | - Song Li
- Department of Bioengineering, University of California Los Angeles, 410 Westwood Plaza, 5121 Engineering V, Los Angeles, California 90095, United States
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19
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Norris SCP, Kasko AM, Chou T, D’Orsogna MR. Stochastic Model of Randomly End-Linked Polymer Network Microregions. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sam C. P. Norris
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095-1600, United States
| | - Andrea M. Kasko
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095-1600, United States
| | - Tom Chou
- Department of Biomathematics, University of California, Los Angeles, Los Angeles, California 90095-1766, United States
- Department of Mathematics, University of California, Los Angeles, Los Angeles, California 0095-1555, United States
| | - Maria R. D’Orsogna
- Department of Mathematics, California State University, Northridge, Northridge, California 91330-8313, United States
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20
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Joyner K, Yang S, Duncan GA. Microrheology for biomaterial design. APL Bioeng 2020; 4:041508. [PMID: 33415310 PMCID: PMC7775114 DOI: 10.1063/5.0013707] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 11/30/2020] [Indexed: 11/15/2022] Open
Abstract
Microrheology analyzes the microscopic behavior of complex materials by measuring the diffusion and transport of embedded particle probes. This experimental method can provide valuable insight into the design of biomaterials with the ability to connect material properties and biological responses to polymer-scale dynamics and interactions. In this review, we discuss how microrheology can be harnessed as a characterization method complementary to standard techniques in biomaterial design. We begin by introducing the core principles and instruments used to perform microrheology. We then review previous studies that incorporate microrheology in their design process and highlight biomedical applications that have been supported by this approach. Overall, this review provides rationale and practical guidance for the utilization of microrheological analysis to engineer novel biomaterials.
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Affiliation(s)
- Katherine Joyner
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, USA
| | - Sydney Yang
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, USA
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21
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Dai CF, Zhang XN, Du C, Frank A, Schmidt HW, Zheng Q, Wu ZL. Photoregulated Gradient Structure and Programmable Mechanical Performances of Tough Hydrogels with a Hydrogen-Bond Network. ACS APPLIED MATERIALS & INTERFACES 2020; 12:53376-53384. [PMID: 33170639 DOI: 10.1021/acsami.0c17198] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Gradient materials exist widely in natural living organisms, affording fascinating biological and mechanical properties. However, the synthetic gradient hydrogels are usually mechanically weak or only have relatively simple gradient structures. Here, we report on tough nanocomposite hydrogels with designable gradient network structure and mechanical properties by a facile post-photoregulation strategy. Poly(1-vinylimidazole-co-methacrylic acid) hydrogels containing gold nanorods (AuNRs) are in a glassy state and show typical yielding and forced elastic deformation at room temperature. The gel slightly contracts its volume when the temperature is above the glass-transition temperature that results in a collapse of the chain segments and formation of denser intra- and interchain hydrogen bonds. Consequently, the mechanical properties of the gels are enhanced, when the temperature returns to room temperature. The mechanical performances of hydrogels can also be locally tuned by near-infrared light irradiation due to the photothermal effect of AuNRs. Hydrogels with arbitrary two-dimensional gradients can be facilely developed by site-specific photoirradiation. The treated and untreated regions with different stiffness and yielding stress possess construct behaviors in stretching or twisting deformations. A locally reinforced hydrogel with the kirigami structure becomes notch-insensitive and exhibits improved strength and stretchability because the treated regions ahead the cuts have better resistance to crack advancement. These tough hydrogels with programmable gradient structure and mechanics should find applications as structural elements, biological devices, etc.
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Affiliation(s)
- Chen Fei Dai
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xin Ning Zhang
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Cong Du
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Andreas Frank
- Department of Macromolecular Chemistry I and Bavarian Polymer Institute, University of Bayreuth, Bayreuth 95440, Germany
| | - Hans-Werner Schmidt
- Department of Macromolecular Chemistry I and Bavarian Polymer Institute, University of Bayreuth, Bayreuth 95440, Germany
| | - Qiang Zheng
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zi Liang Wu
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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22
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Lowen JM, Leach JK. Functionally graded biomaterials for use as model systems and replacement tissues. ADVANCED FUNCTIONAL MATERIALS 2020; 30:1909089. [PMID: 33456431 PMCID: PMC7810245 DOI: 10.1002/adfm.201909089] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Indexed: 05/03/2023]
Abstract
The heterogeneity of native tissues requires complex materials to provide suitable substitutes for model systems and replacement tissues. Functionally graded materials have the potential to address this challenge by mimicking the gradients in heterogeneous tissues such as porosity, mineralization, and fiber alignment to influence strength, ductility, and cell signaling. Advancements in microfluidics, electrospinning, and 3D printing enable the creation of increasingly complex gradient materials that further our understanding of physiological gradients. The combination of these methods enables rapid prototyping of constructs with high spatial resolution. However, successful translation of these gradients requires both spatial and temporal presentation of cues to model the complexity of native tissues that few materials have demonstrated. This review highlights recent strategies to engineer functionally graded materials for the modeling and repair of heterogeneous tissues, together with a description of how cells interact with various gradients.
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Affiliation(s)
- Jeremy M. Lowen
- Department of Biomedical Engineering, University of California, Davis, CA, 95616
| | - J. Kent Leach
- Department of Biomedical Engineering, University of California, Davis, CA, 95616
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA 95817
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23
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Zhu H, Yang H, Ma Y, Lu TJ, Xu F, Genin GM, Lin M. Spatiotemporally Controlled Photoresponsive Hydrogels: Design and Predictive Modeling from Processing through Application. ADVANCED FUNCTIONAL MATERIALS 2020; 30:2000639. [PMID: 32802013 PMCID: PMC7418561 DOI: 10.1002/adfm.202000639] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/16/2020] [Indexed: 05/16/2023]
Abstract
Photoresponsive hydrogels (PRHs) are soft materials whose mechanical and chemical properties can be tuned spatially and temporally with relative ease. Both photo-crosslinkable and photodegradable hydrogels find utility in a range of biomedical applications that require tissue-like properties or programmable responses. Progress in engineering with PRHs is facilitated by the development of theoretical tools that enable optimization of their photochemistry, polymer matrices, nanofillers, and architecture. This review brings together models and design principles that enable key applications of PRHs in tissue engineering, drug delivery, and soft robotics, and highlights ongoing challenges in both modeling and application.
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Affiliation(s)
- Hongyuan Zhu
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Haiqian Yang
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Yufei Ma
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Tian Jian Lu
- State Key Laboratory of Mechanics and Control of Mechanical StructuresNanjing University of Aeronautics and AstronauticsNanjing210016P. R. China
- MOE Key Laboratory for Multifunctional Materials and StructuresXi'an Jiaotong UniversityXi'an710049P. R. China
| | - Feng Xu
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Guy M. Genin
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
- Department of Mechanical Engineering & Materials ScienceWashington University in St. LouisSt. LouisMO63130USA
- NSF Science and Technology Center for Engineering MechanobiologyWashington University in St. LouisSt. LouisMO63130USA
| | - Min Lin
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
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24
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Agate S, Argyropoulos DS, Jameel H, Lucia L, Pal L. 3D Photoinduced Spatiotemporal Resolution of Cellulose-Based Hydrogels for Fabrication of Biomedical Devices. ACS APPLIED BIO MATERIALS 2020; 3:5007-5019. [DOI: 10.1021/acsabm.0c00517] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Cha GD, Lee WH, Lim C, Choi MK, Kim DH. Materials engineering, processing, and device application of hydrogel nanocomposites. NANOSCALE 2020; 12:10456-10473. [PMID: 32388540 DOI: 10.1039/d0nr01456g] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Hydrogels are widely implemented as key materials in various biomedical applications owing to their soft, flexible, hydrophilic, and quasi-solid nature. Recently, however, new material properties over those of bare hydrogels have been sought for novel applications. Accordingly, hydrogel nanocomposites, i.e., hydrogels converged with nanomaterials, have been proposed for the functional transformation of conventional hydrogels. The incorporation of suitable nanomaterials into the hydrogel matrix allows the hydrogel nanocomposite to exhibit multi-functionality in addition to the biocompatible feature of the original hydrogel. Therefore, various hydrogel composites with nanomaterials, including nanoparticles, nanowires, and nanosheets, have been developed for diverse purposes, such as catalysis, environmental purification, bio-imaging, sensing, and controlled drug delivery. Furthermore, novel technologies for the patterning of such hydrogel nanocomposites into desired shapes have been developed. The combination of such material engineering and processing technologies has enabled the hydrogel nanocomposite to become a key soft component of electronic, electrochemical, and biomedical devices. We herein review the recent research trend in the field of hydrogel nanocomposites, particularly focusing on materials engineering, processing, and device applications. Furthermore, the conclusions are presented with the scope of future research outlook, which also includes the current technical limitations.
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Affiliation(s)
- Gi Doo Cha
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea. and School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University (SNU), Seoul 08826, Republic of Korea
| | - Wang Hee Lee
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea. and School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University (SNU), Seoul 08826, Republic of Korea
| | - Chanhyuk Lim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea. and School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University (SNU), Seoul 08826, Republic of Korea
| | - Moon Kee Choi
- School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Dae-Hyeong Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea. and School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University (SNU), Seoul 08826, Republic of Korea
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26
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Jo H, Yoon M, Gajendiran M, Kim K. Recent Strategies in Fabrication of Gradient Hydrogels for Tissue Engineering Applications. Macromol Biosci 2019; 20:e1900300. [PMID: 31886614 DOI: 10.1002/mabi.201900300] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 11/08/2019] [Indexed: 12/19/2022]
Abstract
Hydrogels are widely used as scaffold in tissue engineering field because of their ability to mimic the cellular microenvironment. However, mimicking a completely natural cellular environment is complicated due to the differences in various physical and chemical properties of cellular environments. Recently, gradient hydrogels provide excellent heterogeneous environment to mimic the different cellular microenvironments. To create hydrogels with an anisotropic distribution, gradient hydrogels have been widely developed by adopting several gradient generation techniques. Herein, the various gradient hydrogel fabrication techniques, including dual syringe pump systems, microfluidic device, photolithography, diffusion, and bio-printing are summarized. As the effects of gradient 3D hydrogels with stems have been reviewed elsewhere, this review focuses principally on gradient hydrogel fabrication for multi-model tissue regeneration. This review provides new insights into the key points for fabrication of gradient hydrogels for multi-model tissue regeneration.
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Affiliation(s)
- Heejung Jo
- Department of Bioengineering and Nano-Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Minhyuk Yoon
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Republic of Korea
| | - Mani Gajendiran
- Department of Chemical and Biochemical Engineering, Dongguk University, Seoul, 06420, Republic of Korea
| | - Kyobum Kim
- Department of Chemical and Biochemical Engineering, Dongguk University, Seoul, 06420, Republic of Korea
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27
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Jiang P, Yan C, Ji Z, Guo Y, Zhang X, Jia X, Wang X, Zhou F. Drawing High-Definition and Reversible Hydrogel Paintings with Grayscale Exposure. ACS APPLIED MATERIALS & INTERFACES 2019; 11:42586-42593. [PMID: 31623432 DOI: 10.1021/acsami.9b14342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
High-definition and arbitrary grayscale hydrogel paintings that can appear reversibly with hydration/dehydration are realized through spatially grayscale exposure. Spatio-temporally grayscale images are used to guide the exposure of a hydrogel processor to dictate the gradient cross-linking density spatially, which thereafter results in the heterogeneity of hydrogels in swelling ratio, mechanical properties, and especially visible light transmittance, leading to swelling-induced patterns by gradient and local visible light scattering difference based on tunable mesh size and microphase separation. The resultant grayscale hydrogel patterns, with visible light transmittance adjustable, are reversible during hydration (in 1-2 s) and dehydration and possess the feature size of 70 μm and more pattern information compared with previous hydrogel patterning. Uniquely, the patterns can be realized not only on the outmost surface of hydrogels as usual but inside. Combining the unique grayscale exposure with three-dimensional printing technology, arbitrary hydrogel patterns that have plenty of details and even vary at different layers are fabricated readily, indicating its broad potential in smart anti-counterfeiting of security field, mechanics, engineering, and many others.
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Affiliation(s)
- Pan Jiang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Changyou Yan
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Zhongying Ji
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Yuxiong Guo
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Xiaoqin Zhang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Xin Jia
- School of Chemistry and Chemical Engineering , Shihezi University , Shihezi 832003 , China
| | - Xiaolong Wang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
- School of Chemistry and Chemical Engineering , Shihezi University , Shihezi 832003 , China
| | - Feng Zhou
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
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28
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Hong H, Park SM, Kim D, Park SJ, Kim DS. Grayscale mask‐assisted photochemical crosslinking for a dense collagen construct with stiffness gradient. J Biomed Mater Res B Appl Biomater 2019; 108:1000-1009. [DOI: 10.1002/jbm.b.34452] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 06/12/2019] [Accepted: 07/17/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Hyeonjun Hong
- Department of Mechanical EngineeringPohang University of Science and Technology (POSTECH) 77 Cheongam‐ro, Pohang Gyeongbuk 37673 South Korea
| | - Sang Min Park
- Department of Mechanical EngineeringPohang University of Science and Technology (POSTECH) 77 Cheongam‐ro, Pohang Gyeongbuk 37673 South Korea
| | - Dohui Kim
- Department of Mechanical EngineeringPohang University of Science and Technology (POSTECH) 77 Cheongam‐ro, Pohang Gyeongbuk 37673 South Korea
| | - Sung Jea Park
- Advanced Technology Research Center & School of Mechanical EngineeringKorea University of Technology and Education (KOREATECH) Cheonan Chungnam 31253 South Korea
| | - Dong Sung Kim
- Department of Mechanical EngineeringPohang University of Science and Technology (POSTECH) 77 Cheongam‐ro, Pohang Gyeongbuk 37673 South Korea
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29
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Xue D, Zhang J, Wang Y, Mei D. Digital Light Processing-Based 3D Printing of Cell-Seeding Hydrogel Scaffolds with Regionally Varied Stiffness. ACS Biomater Sci Eng 2019; 5:4825-4833. [DOI: 10.1021/acsbiomaterials.9b00696] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Dai Xue
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jiaxin Zhang
- Department of Toxicology, Fourth Military Medical University, Xi’an 710032, China
| | - Yancheng Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Deqing Mei
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
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30
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Millar-Haskell CS, Dang AM, Gleghorn JP. Coupling synthetic biology and programmable materials to construct complex tissue ecosystems. MRS COMMUNICATIONS 2019; 9:421-432. [PMID: 31485382 PMCID: PMC6724541 DOI: 10.1557/mrc.2019.69] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 05/15/2019] [Indexed: 05/17/2023]
Abstract
Synthetic biology combines engineering and biology to produce artificial systems with programmable features. Specifically, engineered microenvironments have advanced immensely over the past few decades, owing in part to the merging of materials with biological mimetic structures. In this review, we adapt a traditional definition of community ecology to describe "cellular ecology", or the study of the distribution of cell populations and interactions within their microenvironment. We discuss two exemplar hydrogel platforms: (1) self-assembling peptide (SAP) hydrogels and (2) Poly(ethylene) glycol (PEG) hydrogels and describe future opportunities for merging smart material design and synthetic biology within the scope of multicellular platforms.
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Affiliation(s)
| | - Allyson M. Dang
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716
| | - Jason P. Gleghorn
- Department of Biomedical Engineering, University of Delaware, Newark, DE 19716
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31
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Norris SCP, Delgado SM, Kasko AM. Mechanically robust photodegradable gelatin hydrogels for 3D cell culture and in situ mechanical modification. Polym Chem 2019. [DOI: 10.1039/c9py00308h] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Highly conjugated, hydrophobically modified gelatin hydrogels were synthesized, polymerized and degraded with orthogonal wavelengths of light.
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Affiliation(s)
- Sam C. P. Norris
- Department of Bioengineering
- University of California Los Angeles
- Los Angeles
- USA
| | | | - Andrea M. Kasko
- Department of Bioengineering
- University of California Los Angeles
- Los Angeles
- USA
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32
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Yin H, Ding Y, Zhai Y, Tan W, Yin X. Orthogonal programming of heterogeneous micro-mechano-environments and geometries in three-dimensional bio-stereolithography. Nat Commun 2018; 9:4096. [PMID: 30291242 PMCID: PMC6173746 DOI: 10.1038/s41467-018-06685-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 08/28/2018] [Indexed: 01/17/2023] Open
Abstract
Engineering heterogeneous micro-mechano-microenvironments of extracellular matrix is of great interest in tissue engineering, but spatial control over mechanical heterogeneity in three dimensions is still challenging given the fact that geometry and stiffness are inherently intertwined in fabrication. Here, we develop a layer-by-layer three-dimensional (3D) printing paradigm which achieves orthogonal control of stiffness and geometry by capitalizing on the conventionally adverse effect of oxygen inhibition on free-radical polymerization. Controlled oxygen permeation and inhibition result in photo-cured hydrogel layers with thicknesses only weakly dependent to the ultraviolet exposure dosage. The dosage is instead leveraged to program the crosslink density and stiffness of the cured structures. The programmable stiffness spans nearly an order of magnitude (E ~ 2-15 kPa) within the physiologically relevant range. We further demonstrate that extracellular matrices with programmed micro-mechano-environments can dictate 3D cellular organization, enabling in vitro tissue reconstruction.
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Affiliation(s)
- Hang Yin
- Department of Mechanical Engineering, University of Colorado, Boulder, CO, 80309, USA
| | - Yonghui Ding
- Department of Mechanical Engineering, University of Colorado, Boulder, CO, 80309, USA
| | - Yao Zhai
- Department of Mechanical Engineering, University of Colorado, Boulder, CO, 80309, USA
| | - Wei Tan
- Department of Mechanical Engineering, University of Colorado, Boulder, CO, 80309, USA.
| | - Xiaobo Yin
- Department of Mechanical Engineering, University of Colorado, Boulder, CO, 80309, USA.
- Materials Science and Engineering Program, University of Colorado, Boulder, CO, 80309, USA.
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33
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Hozumi T, Kageyama T, Ohta S, Fukuda J, Ito T. Injectable Hydrogel with Slow Degradability Composed of Gelatin and Hyaluronic Acid Cross-Linked by Schiff’s Base Formation. Biomacromolecules 2018; 19:288-297. [DOI: 10.1021/acs.biomac.7b01133] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Takuro Hozumi
- Department
of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Tatsuto Kageyama
- Faculty
of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Seiichi Ohta
- Center
for Disease Biology and Integrative Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Junji Fukuda
- Faculty
of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Taichi Ito
- Department
of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Center
for Disease Biology and Integrative Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
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34
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Smith Callahan LA. Gradient Material Strategies for Hydrogel Optimization in Tissue Engineering Applications. High Throughput 2018; 7:E1. [PMID: 29485612 PMCID: PMC5876527 DOI: 10.3390/ht7010001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 12/30/2017] [Accepted: 01/02/2018] [Indexed: 12/15/2022] Open
Abstract
Although a number of combinatorial/high-throughput approaches have been developed for biomaterial hydrogel optimization, a gradient sample approach is particularly well suited to identify hydrogel property thresholds that alter cellular behavior in response to interacting with the hydrogel due to reduced variation in material preparation and the ability to screen biological response over a range instead of discrete samples each containing only one condition. This review highlights recent work on cell-hydrogel interactions using a gradient material sample approach. Fabrication strategies for composition, material and mechanical property, and bioactive signaling gradient hydrogels that can be used to examine cell-hydrogel interactions will be discussed. The effects of gradients in hydrogel samples on cellular adhesion, migration, proliferation, and differentiation will then be examined, providing an assessment of the current state of the field and the potential of wider use of the gradient sample approach to accelerate our understanding of matrices on cellular behavior.
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Affiliation(s)
- Laura A Smith Callahan
- The Vivian L. Smith Department of Neurosurgery, Center for Stem Cell & Regenerative Medicine, and Department of Nanomedicine and Biomedical Engineering, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA.
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35
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Zhou Y, Zhao S, Zhang C, Liang K, Li J, Yang H, Gu S, Bai Z, Ye D, Xu W. Photopolymerized maleilated chitosan/thiol-terminated poly (vinyl alcohol) hydrogels as potential tissue engineering scaffolds. Carbohydr Polym 2018; 184:383-389. [PMID: 29352933 DOI: 10.1016/j.carbpol.2018.01.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 12/13/2017] [Accepted: 01/02/2018] [Indexed: 01/06/2023]
Abstract
Photocrosslinkable hydrogels composed of natural materials exhibit great application potential in tissue engineering scaffolds. However, weak formation and poor mechanical property can usually be a limitation. Herein, the photo-clickable thiol-ene hydrogels based chitosan were synthesized using photopolymerization of maleic chitosan (MCS) and thiol-terminated poly (vinyl alcohol) (TPVA) in the presence of a biocompatible photoinitiator. Rheological property and absorbing behavior of the MCS/TPVA hydrogels could be tailored by varying the amount of TPVA in the feed. There was strong intermolecular hydrogen bonding between the molecules of MCS and TPVA. Notably, the MCS/TPVA hydrogel (MT-3) exhibited rapid gelation behavior (<120 s), improved stiff (G' = ∼5500 Pa) and compressive strength (0.285 ± 0.014 MPa), which were important for hydrogel scaffolds, especially for injectable hydrogel scaffolds. Photocrosslinked MCS/TPVA hydrogels was cytocompatible and could promote the L929 cells attachment and proliferation, showing their potential as tissue engineering scaffolds.
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Affiliation(s)
- Yingshan Zhou
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan, 430073, People's Republic of China; Key Laboratory of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, Wuhan Textile University, Wuhan, 430073, People's Republic of China.
| | - Shuyan Zhao
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan, 430073, People's Republic of China
| | - Can Zhang
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan, 430073, People's Republic of China
| | - Kaili Liang
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan, 430073, People's Republic of China
| | - Jun Li
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan, 430073, People's Republic of China
| | - Hongjun Yang
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan, 430073, People's Republic of China; Key Laboratory of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, Wuhan Textile University, Wuhan, 430073, People's Republic of China
| | - Shaojin Gu
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan, 430073, People's Republic of China; Key Laboratory of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, Wuhan Textile University, Wuhan, 430073, People's Republic of China
| | - Zikui Bai
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan, 430073, People's Republic of China; Key Laboratory of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, Wuhan Textile University, Wuhan, 430073, People's Republic of China
| | - Dezhan Ye
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan, 430073, People's Republic of China; Key Laboratory of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, Wuhan Textile University, Wuhan, 430073, People's Republic of China
| | - Weilin Xu
- Key Laboratory of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, Wuhan Textile University, Wuhan, 430073, People's Republic of China
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36
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Photoresponsive Hydrogels with Photoswitchable Stiffness: Emerging Platforms to Study Temporal Aspects of Mesenchymal Stem Cell Responses to Extracellular Stiffness Regulation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1144:53-69. [PMID: 30456642 DOI: 10.1007/5584_2018_293] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An extensive number of cell-matrix interaction studies have identified matrix stiffness as a potent regulator of cellular properties and behaviours. Perhaps most notably, matrix stiffness has been demonstrated to regulate mesenchymal stem cell (MSC) phenotype and lineage commitment. Given the therapeutic potential for MSCs in regenerative medicine, significant efforts have been made to understand the molecular mechanisms involved in stiffness regulation. These efforts have predominantly focused on using stiffness-defined polyacrylamide (PA) hydrogels to culture cells in 2D and have enabled elucidation of a number of mechano-sensitive signalling pathways. However, despite proving to be a valuable tool, these stiffness-defined hydrogels do not reflect the dynamic nature of living tissues, which are subject to continuous remodelling during processes such as development, ageing, disease and regeneration. Therefore, in order to study temporal aspects of stiffness regulation, researchers have developed and exploited novel hydrogel substrates with in situ tuneable stiffness. In particular, photoresponsive hydrogels with photoswitchable stiffness are emerging as exciting platforms to study MSC stiffness regulation. This chapter provides an introduction to the use of PA hydrogel substrates, the molecular mechanisms of mechanotransduction currently under investigation and the development of these emerging photoresponsive hydrogel platforms.
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37
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Yao H, Wang J, Mi S. Photo Processing for Biomedical Hydrogels Design and Functionality: A Review. Polymers (Basel) 2017; 10:E11. [PMID: 30966045 PMCID: PMC6415176 DOI: 10.3390/polym10010011] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 12/18/2017] [Accepted: 12/19/2017] [Indexed: 01/20/2023] Open
Abstract
A large number of opportunities for biomedical hydrogel design and functionality through photo-processing have stretched the limits of innovation. As both photochemical understanding and engineering technologies continue to develop, more complicated geometries and spatiotemporal manipulations can be realized through photo-exposure, producing multifunctional hydrogels with specific chemical, biological and physical characteristics for the achievement of biomedical goals. This report describes the role that light has recently played in the synthesis and functionalization of biomedical hydrogels and primarily the design of photoresponsive hydrogels via different chemical reactions (photo crosslinking and photo degradation) and conventional light curing processes (micropatterning, stereolithography and two/multiphoton techniques) as well as typical biomedical applications of the hydrogels (cell culture, differentiation and in vivo vascularization) and their promising future.
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Affiliation(s)
- Hongyi Yao
- Biomanufacturing Engineering Laboratory, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.
| | - Jieqiong Wang
- Biomanufacturing Engineering Laboratory, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.
| | - Shengli Mi
- Biomanufacturing Engineering Laboratory, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.
- Open FIESTA Center, Tsinghua University, Shenzhen 518055, China.
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38
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Abstract
Hydrogels mimic many of the physical properties of soft tissue and are widely used biomaterials for tissue engineering and regenerative medicine. Synthetic hydrogels have been developed to recapitulate many of the healthy and diseased states of native tissues and can be used as a cell scaffold to study the effect of matricellular interactions in vitro. However, these matrices often fail to capture the dynamic and heterogenous nature of the in vivo environment, which varies spatially and during events such as development and disease. To address this deficiency, a variety of manufacturing and processing techniques are being adapted to the biomaterials setting. Among these, photochemistry is particularly well suited because these reactions can be performed in precise three-dimensional space and at specific moments in time. This spatiotemporal control over chemical reactions can also be performed over a range of cell- and tissue-relevant length scales with reactions that proceed efficiently and harmlessly at ambient conditions. This review will focus on the use of photochemical reactions to create dynamic hydrogel environments, and how these dynamic environments are being used to investigate and direct cell behavior.
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Affiliation(s)
- Tobin E Brown
- Department of Chemical and Biological Engineering, University of Colorado Boulder, USA.
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39
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Recent development in cell encapsulations and their therapeutic applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 77:1247-1260. [DOI: 10.1016/j.msec.2017.04.103] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 04/18/2017] [Indexed: 02/08/2023]
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40
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Wei Z, Lewis DM, Xu Y, Gerecht S. Dual Cross-Linked Biofunctional and Self-Healing Networks to Generate User-Defined Modular Gradient Hydrogel Constructs. Adv Healthc Mater 2017; 6. [PMID: 28544647 DOI: 10.1002/adhm.201700523] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Indexed: 12/22/2022]
Abstract
Gradient hydrogels have been developed to mimic the spatiotemporal differences of multiple gradient cues in tissues. Current approaches used to generate such hydrogels are restricted to a single gradient shape and distribution. Here, a hydrogel is designed that includes two chemical cross-linking networks, biofunctional, and self-healing networks, enabling the customizable formation of modular gradient hydrogel construct with various gradient distributions and flexible shapes. The biofunctional networks are formed via Michael addition between the acrylates of oxidized acrylated hyaluronic acid (OAHA) and the dithiol of matrix metalloproteinase (MMP)-sensitive cross-linker and RGD peptides. The self-healing networks are formed via dynamic Schiff base reaction between N-carboxyethyl chitosan (CEC) and OAHA, which drives the modular gradient units to self-heal into an integral modular gradient hydrogel. The CEC-OAHA-MMP hydrogel exhibits excellent flowability at 37 °C under shear stress, enabling its injection to generate gradient distributions and shapes. Furthermore, encapsulated sarcoma cells respond to the gradient cues of RGD peptides and MMP-sensitive cross-linkers in the hydrogel. With these superior properties, the dual cross-linked CEC-OAHA-MMP hydrogel holds significant potential for generating customizable gradient hydrogel constructs, to study and guide cellular responses to their microenvironment such as in tumor mimicking, tissue engineering, and stem cell differentiation and morphogenesis.
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Affiliation(s)
- Zhao Wei
- Department of Chemical and Biomolecular Engineering; The Institute for NanoBioTechnology; Physical-Sciences Oncology Center; Johns Hopkins University; Baltimore MD 21218 USA
| | - Daniel M. Lewis
- Department of Chemical and Biomolecular Engineering; The Institute for NanoBioTechnology; Physical-Sciences Oncology Center; Johns Hopkins University; Baltimore MD 21218 USA
| | - Yu Xu
- Department of Chemical and Biomolecular Engineering; The Institute for NanoBioTechnology; Physical-Sciences Oncology Center; Johns Hopkins University; Baltimore MD 21218 USA
| | - Sharon Gerecht
- Department of Chemical and Biomolecular Engineering; The Institute for NanoBioTechnology; Physical-Sciences Oncology Center; Johns Hopkins University; Baltimore MD 21218 USA
- Department of Materials Science and Engineering; Johns Hopkins University; Baltimore MD 21218 USA
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41
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Norris SCP, Chou T, Kasko AM. Diffusion of Photoabsorbing Degradation Byproducts in Photodegradable Polymer Networks. MACROMOL THEOR SIMUL 2017. [DOI: 10.1002/mats.201700007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sam C. P. Norris
- Department of Bioengineering University of California Los Angeles Los Angeles CA USA
| | - Tom Chou
- Department of Biomathematics University of California Los Angeles Los Angeles CA USA
- Department of Mathematics University of California Los Angeles Los Angeles CA USA
| | - Andrea M. Kasko
- Department of Bioengineering University of California Los Angeles Los Angeles CA USA
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42
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van Haaften EE, Bouten CVC, Kurniawan NA. Vascular Mechanobiology: Towards Control of In Situ Regeneration. Cells 2017; 6:E19. [PMID: 28671618 PMCID: PMC5617965 DOI: 10.3390/cells6030019] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 06/16/2017] [Accepted: 06/23/2017] [Indexed: 01/08/2023] Open
Abstract
The paradigm of regenerative medicine has recently shifted from in vitro to in situ tissue engineering: implanting a cell-free, biodegradable, off-the-shelf available scaffold and inducing the development of functional tissue by utilizing the regenerative potential of the body itself. This approach offers a prospect of not only alleviating the clinical demand for autologous vessels but also circumventing the current challenges with synthetic grafts. In order to move towards a hypothesis-driven engineering approach, we review three crucial aspects that need to be taken into account when regenerating vessels: (1) the structure-function relation for attaining mechanical homeostasis of vascular tissues, (2) the environmental cues governing cell function, and (3) the available experimental platforms to test instructive scaffolds for in situ tissue engineering. The understanding of cellular responses to environmental cues leads to the development of computational models to predict tissue formation and maturation, which are validated using experimental platforms recapitulating the (patho)physiological micro-environment. With the current advances, a progressive shift is anticipated towards a rational and effective approach of building instructive scaffolds for in situ vascular tissue regeneration.
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Affiliation(s)
- Eline E van Haaften
- Department of Biomedical Engineering, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands.
- Institute for Complex Molecular Systems, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands.
| | - Carlijn V C Bouten
- Department of Biomedical Engineering, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands.
- Institute for Complex Molecular Systems, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands.
| | - Nicholas A Kurniawan
- Department of Biomedical Engineering, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands.
- Institute for Complex Molecular Systems, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands.
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43
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Sasaki S, Sugita Y, Tokita M, Suenobu T, Ishitani O, Konishi GI. Smart Network Polymers with Bis(piperidyl)naphthalene Cross-Linkers: Selective Fluorescence Quenching and Photodegradation in the Presence of Trichloromethyl-Containing Chloroalkanes. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00213] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
| | | | | | - Tomoyoshi Suenobu
- Department
of Material and Life Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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44
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Brown TE, Marozas IA, Anseth KS. Amplified Photodegradation of Cell-Laden Hydrogels via an Addition-Fragmentation Chain Transfer Reaction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:10.1002/adma.201605001. [PMID: 28112845 PMCID: PMC5489340 DOI: 10.1002/adma.201605001] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 11/14/2016] [Indexed: 05/17/2023]
Abstract
Hydrogels crosslinked by allyl-sulfide-containing molecules are presented. By exposure to light in the presence of a photoinitiator and a free monofunctional thiol, photodegradation is achieved. Both the gelation and degradation are cytocompatible and allow for cell encapsulation and subsequent release. The photodegradation kinetics and depths attainable are superior to those of traditional cell-laden photodegradable hydrogels.
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Affiliation(s)
- Tobin E Brown
- Department of Chemical and Biological Engineering and the BioFrontiers Institute, University of Colorado Boulder, Jennie Smoly Caruthers Biotechnology Building, 3415 Colorado Ave, Boulder, CO, 80303, USA
| | - Ian A Marozas
- Department of Chemical and Biological Engineering and the BioFrontiers Institute, University of Colorado Boulder, Jennie Smoly Caruthers Biotechnology Building, 3415 Colorado Ave, Boulder, CO, 80303, USA
| | - Kristi S Anseth
- Department of Chemical and Biological Engineering and the BioFrontiers Institute, University of Colorado Boulder, Jennie Smoly Caruthers Biotechnology Building, 3415 Colorado Ave, Boulder, CO, 80303, USA
- Howard Hughes Medical Institute, University of Colorado Boulder, Jennie Smoly Caruthers Biotechnology Building, 3415 Colorado Ave, Boulder, CO, 80303, USA
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45
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Liang Y, Li L, Scott RA, Kiick KL. Polymeric Biomaterials: Diverse Functions Enabled by Advances in Macromolecular Chemistry. Macromolecules 2017; 50:483-502. [PMID: 29151616 PMCID: PMC5687278 DOI: 10.1021/acs.macromol.6b02389] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Biomaterials have been extensively used to leverage beneficial outcomes in various therapeutic applications, such as providing spatial and temporal control over the release of therapeutic agents in drug delivery as well as engineering functional tissues and promoting the healing process in tissue engineering and regenerative medicine. This perspective presents important milestones in the development of polymeric biomaterials with defined structures and properties. Contemporary studies of biomaterial design have been reviewed with focus on constructing materials with controlled structure, dynamic functionality, and biological complexity. Examples of these polymeric biomaterials enabled by advanced synthetic methodologies, dynamic chemistry/assembly strategies, and modulated cell-material interactions have been highlighted. As the field of polymeric biomaterials continues to evolve with increased sophistication, current challenges and future directions for the design and translation of these materials are also summarized.
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Affiliation(s)
- Yingkai Liang
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Linqing Li
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Rebecca A. Scott
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, 19716, USA
- Nemours-Alfred I. duPont Hospital for Children, Department of Biomedical Research, 1600 Rockland Road, Wilmington, DE 19803, USA
| | - Kristi L. Kiick
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, 19716, USA
- Department of Biomedical Engineering, University of Delaware, Newark, DE 19716, USA
- Delaware Biotechnology Institute, 15 Innovation Way, Newark, DE, 19711, USA
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46
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Schenzel AM, Moszner N, Barner-Kowollik C. Disulfone Cross-Linkers for λ-Orthogonal Photoinduced Curing and Degradation of Polymeric Networks. ACS Macro Lett 2017; 6:16-20. [PMID: 35632873 DOI: 10.1021/acsmacrolett.6b00934] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We introduce a new concept for λ-orthogonal photocurable and degradable polymer networks based on disulfone cross-linkers. The methacrylate-based monomer mixture can be cured via irradiation with visible light (400-520 nm) due to a germanium-based initiator in 10 min. Subsequently, disassembly can be induced via the UV light (350-400 nm) triggered decomposition of a photogenerated amine (PGA) that cleaves the disulfone cross-links of the network completely via a substitution reaction. For the disulfone-based cross-linking, a new dimethacrylate monomer containing the disulfone moiety is synthesized. The cleavage of the S-S bond via a nucleophilic substitution is evidenced using 5 equiv of diethylamine as a nucleophile. In order to achieve an in situ degradation, a UV-degradable PGA is prepared, and its degradation upon UV irradiation as well as its stability under visible light are demonstrated. 1H NMR spectroscopy in solution revealed a complete degradation of the disulfone in the presence of 5 equiv of the PGA. Finally, a swollen network was prepared and successfully degraded upon UV irradiation within 4 h.
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Affiliation(s)
- Alexander M. Schenzel
- Preparative
Macromolecular Chemistry, Institut für Technische Chemie und
Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstr. 18, 76128 Karlsruhe, Germany
- Institut für Biologische Grenzflächen, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Norbert Moszner
- Ivoclar Vivadent AG, Bendererstr.
2, 9494 Schaan, Liechtenstein
| | - Christopher Barner-Kowollik
- Preparative
Macromolecular Chemistry, Institut für Technische Chemie und
Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstr. 18, 76128 Karlsruhe, Germany
- Institut für Biologische Grenzflächen, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- School
of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), 2 George Street, QLD 4000 Brisbane, Australia
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