151
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Roosa CA, Ma M, Chhabra P, Brayman K, Griffin D. Delivery of Dissociated Islets Cells within Microporous Annealed Particle Scaffold to Treat Type 1 Diabetes. ADVANCED THERAPEUTICS 2022; 5:2200064. [PMID: 36405778 PMCID: PMC9674036 DOI: 10.1002/adtp.202200064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Indexed: 09/03/2023]
Abstract
Type 1 diabetes (T1D) is caused by the autoimmune loss of insulin-producing beta cells in the pancreas. The only clinical approach to patient management of blood glucose that doesn't require exogenous insulin is pancreas or islet transplantation. Unfortunately, donor islets are scarce and there is substantial islet loss immediately after transplantation due, in part, to the local inflammatory response. The delivery of stem cell-derived beta cells (e.g., from induced pluripotent stem cells) and dissociated islet cells hold promise as a treatment for T1D; however, these cells typically require re-aggregation in vitro prior to implantation. Microporous scaffolds have shown high potential to serve as a vehicle for organization, survival, and function of insulin-producing cells. In this study, we investigated the use of microporous annealed particle (MAP) scaffold for delivery of enzymatically dissociated islet cells, a model beta cell source, within the scaffold's interconnected pores. We found that MAP-based cell delivery enables survival and function of dissociated islets cells both in vitro and in an in vivo mouse model of T1D.
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Affiliation(s)
- Colleen A Roosa
- Department of Biomedical Engineering, University of Virginia, 415 Lane Rd, Charlottesville, Virginia 22903, USA
| | - Mingyang Ma
- Department of Surgery, University of Virginia, 1300 Jefferson Park Ave, Charlottesville, Virginia 22903, USA
| | - Preeti Chhabra
- Department of Surgery, University of Virginia, 1300 Jefferson Park Ave, Charlottesville, Virginia 22903, USA
| | - Kenneth Brayman
- Department of Surgery, University of Virginia, 1300 Jefferson Park Ave, Charlottesville, Virginia 22903, USA
| | - Donald Griffin
- Department of Biomedical Engineering, University of Virginia, 415 Lane Rd, Charlottesville, Virginia 22903, USA
- Department of Chemical Engineering, University of Virginia, 351 McCormick Rd, Charlottesville, Virginia 22904, USA
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152
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Muir VG, Qazi TH, Weintraub S, Torres Maldonado BO, Arratia PE, Burdick JA. Sticking Together: Injectable Granular Hydrogels with Increased Functionality via Dynamic Covalent Inter-Particle Crosslinking. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2201115. [PMID: 35315233 PMCID: PMC9463088 DOI: 10.1002/smll.202201115] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/03/2022] [Indexed: 05/14/2023]
Abstract
Granular hydrogels are an exciting class of microporous and injectable biomaterials that are being explored for many biomedical applications, including regenerative medicine, 3D printing, and drug delivery. Granular hydrogels often possess low mechanical moduli and lack structural integrity due to weak physical interactions between microgels. This has been addressed through covalent inter-particle crosslinking; however, covalent crosslinking often occurs through temporal enzymatic methods or photoinitiated reactions, which may limit injectability and material processing. To address this, a hyaluronic acid (HA) granular hydrogel is developed with dynamic covalent (hydrazone) inter-particle crosslinks. Extrusion fragmentation is used to fabricate microgels from photocrosslinkable norbornene-modified HA, additionally modified with either aldehyde or hydrazide groups. Aldehyde and hydrazide-containing microgels are mixed and jammed to form adhesive granular hydrogels. These granular hydrogels possess enhanced mechanical integrity and shape stability over controls due to the covalent inter-particle bonds, while maintaining injectability due to the dynamic hydrazone bonds. The adhesive granular hydrogels are applied to 3D printing, which allows the printing of structures that are stable without any further post-processing. Additionally, the authors demonstrate that adhesive granular hydrogels allow for cell invasion in vitro. Overall, this work demonstrates the use of dynamic covalent inter-particle crosslinking to enhance injectable granular hydrogels.
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Affiliation(s)
- Victoria G Muir
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Taimoor H Qazi
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Shoshana Weintraub
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Bryan O Torres Maldonado
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Paulo E Arratia
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Jason A Burdick
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Department of Chemical and Biological Engineering, College of Engineering and Applied Science, University of Colorado Boulder, Boulder, CO, 80303, USA
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153
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Bai X, Sun Q, Cui H, Guerzoni LPB, Wuttke S, Kiessling F, De Laporte L, Lammers T, Shi Y. Controlled Covalent Self-Assembly of a Homopolymer for Multiscale Materials Engineering. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2109701. [PMID: 35906820 DOI: 10.1002/adma.202109701] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 07/04/2022] [Indexed: 06/15/2023]
Abstract
Polymer self-assembly is a crucial process in materials engineering. Currently, almost all polymer self-assembly is limited to non-covalent bonding methods, even though these methods have drawbacks as they require complicated synthesis techniques and produce relatively unstable structures. Here, a novel mechanism of covalent polymer self-assembly is discovered and employed to address drawbacks of non-covalent polymer self-assembly. A simple ketone homopolymer is found to self-assemble into nano- to macroscale hydrogels during covalent crosslinking. In contrast to non-covalent self-assembly, the covalent self-assembly is independent of and unaffected by solvent conditions (e.g., polarity and ionic strength) and does not require additional agents, e.g., organic solvents and surfactants. The covalent polymer self-assembly is subjected to a new mechanism of control by tuning the covalent crosslinking rate. This leads to nanogels with an unprecedented and tightly controlled range of dimensions from less than 10 nm to above 100 nm. Moreover, the crosslinking rate also regulates the assembly behavior of microgels fabricated by microfluidics. The microgels self-assemble into granular fibers, which is 3D printed into stable porous scaffolds. The novel covalent polymer assembly method has enormous potential to revolutionize multiscale materials fabrication for applications in drug delivery, tissue engineering, and many other fields.
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Affiliation(s)
- Xiangyang Bai
- Uniklinik RWTH Aachen and Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, 52074, Aachen, Germany
| | - Qingxue Sun
- Uniklinik RWTH Aachen and Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, 52074, Aachen, Germany
| | - Hao Cui
- Uniklinik RWTH Aachen and Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, 52074, Aachen, Germany
| | - Luis P B Guerzoni
- DWI-Leibniz Institute for Interactive Materials, 52074, Aachen, Germany
| | - Stefan Wuttke
- BCMaterials, Basque Center for Materials, UPV/EHU Science Park, Leioa, 48940, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, 48013, Spain
| | - Fabian Kiessling
- Uniklinik RWTH Aachen and Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, 52074, Aachen, Germany
| | - Laura De Laporte
- DWI-Leibniz Institute for Interactive Materials, 52074, Aachen, Germany
- Institute of Applied Medical Engineering, Department of Advanced Materials for Biomedicine, RWTH Aachen University, 52074, Aachen, Germany
- Institute for Technical and Macromolecular Chemistry, RWTH Aachen University, 52074, Aachen, Germany
| | - Twan Lammers
- Uniklinik RWTH Aachen and Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, 52074, Aachen, Germany
- Department of Pharmaceutics, Utrecht University, Utrecht, 3584 CG, The Netherlands
- Department of Targeted Therapeutics, University of Twente, Enschede, 7500 AE, The Netherlands
| | - Yang Shi
- Uniklinik RWTH Aachen and Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, 52074, Aachen, Germany
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154
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Miksch CE, Skillin NP, Kirkpatrick BE, Hach GK, Rao VV, White TJ, Anseth KS. 4D Printing of Extrudable and Degradable Poly(Ethylene Glycol) Microgel Scaffolds for Multidimensional Cell Culture. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200951. [PMID: 35732614 PMCID: PMC9463109 DOI: 10.1002/smll.202200951] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 05/18/2022] [Indexed: 05/02/2023]
Abstract
Granular synthetic hydrogels are useful bioinks for their compatibility with a variety of chemistries, affording printable, stimuli-responsive scaffolds with programmable structure and function. Additive manufacturing of microscale hydrogels, or microgels, allows for the fabrication of large cellularized constructs with percolating interstitial space, providing a platform for tissue engineering at length scales that are inaccessible by bulk encapsulation where transport of media and other biological factors are limited by scaffold density. Herein, synthetic microgels with varying degrees of degradability are prepared with diameters on the order of hundreds of microns by submerged electrospray and UV photopolymerization. Porous microgel scaffolds are assembled by particle jamming and extrusion printing, and semi-orthogonal chemical cues are utilized to tune the void fraction in printed scaffolds in a logic-gated manner. Scaffolds with different void fractions are easily cellularized post printing and microgels can be directly annealed into cell-laden structures. Finally, high-throughput direct encapsulation of cells within printable microgels is demonstrated, enabling large-scale 3D culture in a macroporous biomaterial. This approach provides unprecedented spatiotemporal control over the properties of printed microporous annealed particle scaffolds for 2.5D and 3D tissue culture.
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Affiliation(s)
- Connor E Miksch
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Nathaniel P Skillin
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Medical Scientist Training Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Bruce E Kirkpatrick
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Medical Scientist Training Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Grace K Hach
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Varsha V Rao
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Timothy J White
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Kristi S Anseth
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
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155
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Ataie Z, Kheirabadi S, Zhang JW, Kedzierski A, Petrosky C, Jiang R, Vollberg C, Sheikhi A. Nanoengineered Granular Hydrogel Bioinks with Preserved Interconnected Microporosity for Extrusion Bioprinting. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2202390. [PMID: 35922399 DOI: 10.1002/smll.202202390] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Indexed: 06/15/2023]
Abstract
3D bioprinting of granular hydrogels comprising discrete hydrogel microparticles (microgels) may overcome the intrinsic structural limitations of bulk (nanoporous) hydrogel bioinks, enabling the fabrication of modular thick tissue constructs. The additive manufacturing of granular scaffolds has predominantly relied on highly jammed microgels to render the particulate suspensions shear yielding and extrudable. This inevitably compromises void spaces between microgels (microporosity), defeating rapid cell penetration, facile metabolite and oxygen transfer, and cell viability. Here, this persistent bottleneck is overcome by programming microgels with reversible interfacial nanoparticle self-assembly, enabling the fabrication of nanoengineered granular bioinks (NGB) with well-preserved microporosity, enhanced printability, and shape fidelity. The microporous architecture of bioprinted NGB constructs permits immediate post-printing 3D cell seeding, which may expand the library of bioinks via circumventing the necessity of bioorthogonality for cell-laden scaffold formation. This work opens new opportunities for the 3D bioprinting of tissue engineering microporous scaffolds beyond the traditional biofabrication window.
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Affiliation(s)
- Zaman Ataie
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Sina Kheirabadi
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Jenna Wanjing Zhang
- Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Alexander Kedzierski
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Carter Petrosky
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Rhea Jiang
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Christian Vollberg
- Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Amir Sheikhi
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
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156
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Coronel MM, Martin KE, Hunckler MD, Kalelkar P, Shah RM, García AJ. Hydrolytically Degradable Microgels with Tunable Mechanical Properties Modulate the Host Immune Response. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2106896. [PMID: 35274457 PMCID: PMC10288386 DOI: 10.1002/smll.202106896] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/27/2022] [Indexed: 06/14/2023]
Abstract
Hydrogel microparticles (microgels) are an attractive approach for therapeutic delivery because of their modularity, injectability, and enhanced integration with the host tissue. Multiple microgel fabrication strategies and chemistries have been implemented, yet manipulation of microgel degradability and its effect on in vivo tissue responses remains underexplored. Here, the authors report a facile method to synthesize microgels crosslinked with ester-containing junctions to afford tunable degradation kinetics. Monodisperse microgels of maleimide-functionalized poly(ethylene-glycol) are generated using droplet microfluidics crosslinked with thiol-terminated, ester-containing molecules. Tunable mechanics are achievable based on the ratio of degradable to nondegradable crosslinkers in the continuous phase. Degradation in an aqueous medium leads to microgel deformation based on swelling and a decrease in elastic modulus. Furthermore, degradation byproducts are cytocompatible and do not cause monocytic cell activation under noninflammatory conditions. These injectable microgels possess time-dependent degradation on the order of weeks in vivo. Lastly, the evaluation of tissue responses in a subcutaneous dorsal pocket shows a dynamic type-1 like immune response to the synthetic microgels, driven by interferon gamma (IFN-γ ) expression, which can be moderated by tuning the degradation properties. Collectively, this study demonstrates the development of a hydrolytic microgel platform that can be adapted to desired host tissue immune responses.
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Affiliation(s)
- María M Coronel
- Woodruff School of Mechanical Engineering and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Karen E Martin
- Woodruff School of Mechanical Engineering and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Michael D Hunckler
- Woodruff School of Mechanical Engineering and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Pranav Kalelkar
- Woodruff School of Mechanical Engineering and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Rahul M Shah
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Andrés J García
- Woodruff School of Mechanical Engineering and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
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157
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Liu W, Jia L, Zhao S, Ma Y, Liu S, Wang Q, Lv X, Jiang H, Liu X. ROS‐scavenging and antimicrobial polysaccharide hydrogel for methicillin‐resistant staphylococcus aureus‐infected diabetic wound healing. NANO SELECT 2022. [DOI: 10.1002/nano.202200117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Wenshuai Liu
- Research Center of Plastic Surgery Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing People's Republic of China
- Key Laboratory of External Tissue and Organ Regeneration Chinese Academy of Medical Sciences and Peking Union Medical College Beijing People's Republic of China
| | - Litao Jia
- Research Center of Plastic Surgery Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing People's Republic of China
| | - Sichun Zhao
- Research Center of Plastic Surgery Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing People's Republic of China
| | - Yue Ma
- Research Center of Plastic Surgery Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing People's Republic of China
| | - Siyu Liu
- Research Center of Plastic Surgery Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing People's Republic of China
| | - Qian Wang
- Research Center of Plastic Surgery Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing People's Republic of China
- Key Laboratory of External Tissue and Organ Regeneration Chinese Academy of Medical Sciences and Peking Union Medical College Beijing People's Republic of China
| | - Xiaoyan Lv
- Research Center of Plastic Surgery Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing People's Republic of China
| | - Haiyue Jiang
- Research Center of Plastic Surgery Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing People's Republic of China
| | - Xia Liu
- Research Center of Plastic Surgery Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing People's Republic of China
- Key Laboratory of External Tissue and Organ Regeneration Chinese Academy of Medical Sciences and Peking Union Medical College Beijing People's Republic of China
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158
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Cao X, Zhang Z, Sun L, Luo Z, Zhao Y. Multifunctional fish gelatin hydrogel inverse opal films for wound healing. J Nanobiotechnology 2022; 20:355. [PMID: 35918727 PMCID: PMC9344764 DOI: 10.1186/s12951-022-01564-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 07/17/2022] [Indexed: 11/22/2022] Open
Abstract
Background Wound healing has become a worldwide healthcare issue. Attempts in the area focus on developing patches with the capabilities of avoiding wound infection, promoting tissue remolding, and reporting treatment status that are of great value for wound treatment. Results In this paper, we present a novel inverse opal film (IOF) patch based on a photo-crosslinking fish gelatin hydrogel with the desired features for wound healing and dynamic monitoring. The film with vibrant structure colors was constructed by using the mixture of fish gelatin methacryloyl, chitosan, and polyacrylic acid (PAA) to replicate colloidal crystal templates. As the structures of these natural biomolecules are well-retained during the fabrication, the resultant IOF was with brilliant biocompatibility, low immunogenicity, antibacterial property, as well as with the functions of promoting tissue growth and wound healing. In addition, the IOF presented interconnected nanopores and high specific surface areas for vascular endothelial growth factor loading, which could further improve its angiogenesis capability. More attractively, as the pH-responsive PAA was incorporated, the IOF patch could report the wound healing status through its real-time structural colors or reflectance spectra. Conclusions These features implied the practical value of the multifunctional fish gelatin hydrogel IOFs in clinical wound management. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-022-01564-w.
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Affiliation(s)
- Xinyue Cao
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Zhuohao Zhang
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Lingyu Sun
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Zhiqiang Luo
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Yuanjin Zhao
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China. .,Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, Zhejiang, China.
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159
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Li X, You B, Shum HC, Chen CH. Future foods: Design, fabrication and production through microfluidics. Biomaterials 2022; 287:121631. [PMID: 35717791 DOI: 10.1016/j.biomaterials.2022.121631] [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: 02/28/2022] [Revised: 05/12/2022] [Accepted: 06/09/2022] [Indexed: 11/02/2022]
Abstract
Many delicious foods are soft matter systems with health ingredients and unique internal structures that provide rich nutrition, unique textures, and popular flavors. Obtaining these special properties in food products usually requires specialized processes. Microfluidic technologies have been developed to physically manipulate liquids to produce a broad range of microunits, providing a suitable approach for precise fabrication of functional biomaterials with desirable interior structures in a bottom-up fashion. In this review, we present how microfluidics has been applied to produce gel-based structures and highlight their use in fabricating novel foods, focusing on, among others, cultured meat as a rapidly growing field in food industry. We first discuss the behaviors of food liquids in microchannels for fluidic structure design. Then, different types of microsized building blocks with specific geometries fabricated through microfluidics are introduced, including particles (point), fibers (line), and sheets (plane). These well-defined units can encapsulate or interact with cells, forming microtissues to construct meat products with desirable architectures. After that, we review approaches to scale up microfluidic devices for mass production of the hydrogel building blocks and highlight the challenges associated with bottom-up food production.
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Affiliation(s)
- Xiufeng Li
- Advanced Biomedical Instrumentation Centre, Hong Kong Science Park, Shatin, New Territories, Hong Kong, China
| | - Baihao You
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong, China
| | - Ho Cheung Shum
- Advanced Biomedical Instrumentation Centre, Hong Kong Science Park, Shatin, New Territories, Hong Kong, China; Department of Mechanical Engineering, University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | - Chia-Hung Chen
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong, China; City University of Hong Kong, Shenzhen Research Institute, 8 Yuexing 1st Road, Shenzhen Hi-tech Industrial Park, Nanshan District, Shenzhen, China.
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160
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Sideris E, Kioulaphides S, Wilson K, Yu A, Chen J, Carmichael ST, Segura T. Particle hydrogels decrease cerebral atrophy and attenuate astrocyte and microglia/macrophage reactivity after stroke. ADVANCED THERAPEUTICS 2022; 5:2200048. [PMID: 36589207 PMCID: PMC9797126 DOI: 10.1002/adtp.202200048] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Increasing numbers of individuals live with stroke related disabilities. Following stroke, highly reactive astrocytes and pro-inflammatory microglia can release cytokines and lead to a cytotoxic environment that causes further brain damage and prevents endogenous repair. Paradoxically, these same cells also activate pro-repair mechanisms that contribute to endogenous repair and brain plasticity. Here, we show that the direct injection of a hyaluronic acid based microporous annealed particle (MAP) hydrogel into the stroke core in mice reduces the percent of highly reactive astrocytes, increases the percent of alternatively activated microglia, decreases cerebral atrophy and preserves NF200 axonal bundles. Further, we show that MAP hydrogel promotes reparative astrocyte infiltration into the lesion, which directly coincides with axonal penetration into the lesion. This work shows that the injection of a porous scaffold into the stroke core can lead to clinically relevant decrease in cerebral atrophy and modulates astrocytes and microglia towards a pro-repair phenotype.
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Affiliation(s)
- Elias Sideris
- Department of Chemical and Biomolecular Engineering, University of California Los Angeles, Los Angeles, CA, United States
| | - Sophia Kioulaphides
- Departments of Biomedical Engineering, Neurology, and Dermatology, Duke University, Durham, NC, United States
| | - Katrina Wilson
- Departments of Biomedical Engineering, Neurology, and Dermatology, Duke University, Durham, NC, United States
| | - Aaron Yu
- Department of Chemical and Biomolecular Engineering, University of California Los Angeles, Los Angeles, CA, United States
| | - Jun Chen
- Departments of Biomedical Engineering, Neurology, and Dermatology, Duke University, Durham, NC, United States
| | - S Thomas Carmichael
- Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, United States
| | - Tatiana Segura
- Departments of Biomedical Engineering, Neurology, and Dermatology, Duke University, Durham, NC, United States,Corresponding author: Tel.: +1 919-660-2901,
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161
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Wei Z, Wang S, Hirvonen J, Santos HA, Li W. Microfluidics Fabrication of Micrometer-Sized Hydrogels with Precisely Controlled Geometries for Biomedical Applications. Adv Healthc Mater 2022; 11:e2200846. [PMID: 35678152 DOI: 10.1002/adhm.202200846] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Indexed: 01/24/2023]
Abstract
Micrometer-sized hydrogels are cross-linked three-dimensional network matrices with high-water contents and dimensions ranging from several to hundreds of micrometers. Due to their excellent biocompatibility and capability to mimic physiological microenvironments in vivo, micrometer-sized hydrogels have attracted much attention in the biomedical engineering field. Their biological properties and applications are primarily influenced by their chemical compositions and geometries. However, inhomogeneous morphologies and uncontrollable geometries limit traditional micrometer-sized hydrogels obtained by bulk mixing. In contrast, microfluidic technology holds great potential for the fabrication of micrometer-sized hydrogels since their geometries, sizes, structures, compositions, and physicochemical properties can be precisely manipulated on demand based on the excellent control over fluids. Therefore, micrometer-sized hydrogels fabricated by microfluidic technology have been applied in the biomedical field, including drug encapsulation, cell encapsulation, and tissue engineering. This review introduces micrometer-sized hydrogels with various geometries synthesized by different microfluidic devices, highlighting their advantages in various biomedical applications over those from traditional approaches. Overall, emerging microfluidic technologies enrich the geometries and morphologies of hydrogels and accelerate translation for industrial production and clinical applications.
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Affiliation(s)
- Zhenyang Wei
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland
| | - Shiqi Wang
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland
| | - Jouni Hirvonen
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland
| | - Hélder A Santos
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland.,Department of Biomedical Engineering, W.J. Kolff Institute for Biomedical Engineering and Materials Science, University Medical Center Groningen/University of Groningen, Ant. Deusinglaan 1, Groningen, 9713 AV, The Netherlands
| | - Wei Li
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, 00014, Finland
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Xu Y, Zhu H, Denduluri A, Ou Y, Erkamp NA, Qi R, Shen Y, Knowles TPJ. Recent Advances in Microgels: From Biomolecules to Functionality. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200180. [PMID: 35790106 DOI: 10.1002/smll.202200180] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/15/2022] [Indexed: 06/15/2023]
Abstract
The emerging applications of hydrogel materials at different length scales, in areas ranging from sustainability to health, have driven the progress in the design and manufacturing of microgels. Microgels can provide miniaturized, monodisperse, and regulatable compartments, which can be spatially separated or interconnected. These microscopic materials provide novel opportunities for generating biomimetic cell culture environments and are thus key to the advances of modern biomedical research. The evolution of the physical and chemical properties has, furthermore, highlighted the potentials of microgels in the context of materials science and bioengineering. This review describes the recent research progress in the fabrication, characterization, and applications of microgels generated from biomolecular building blocks. A key enabling technology allowing the tailoring of the properties of microgels is their synthesis through microfluidic technologies, and this paper highlights recent advances in these areas and their impact on expanding the physicochemical parameter space accessible using microgels. This review finally discusses the emerging roles that microgels play in liquid-liquid phase separation, micromechanics, biosensors, and regenerative medicine.
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Affiliation(s)
- Yufan Xu
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Hongjia Zhu
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Akhila Denduluri
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Yangteng Ou
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Nadia A Erkamp
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Runzhang Qi
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Yi Shen
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute, University of Sydney, Sydney, NSW, 2006, Australia
| | - Tuomas P J Knowles
- Centre for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
- Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
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163
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Wilson KL, Pérez SCL, Naffaa MM, Kelly SH, Segura T. Stoichiometric Post-Modification of Hydrogel Microparticles Dictates Neural Stem Cell Fate in Microporous Annealed Particle Scaffolds. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2201921. [PMID: 35731241 PMCID: PMC9645378 DOI: 10.1002/adma.202201921] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/07/2022] [Indexed: 05/16/2023]
Abstract
Microporous annealed particle (MAP) scaffolds are generated from assembled hydrogel microparticles (microgels). It has been previously demonstrated that MAP scaffold are porous, biocompatible, and recruit neural progenitor cells (NPCs) to the stroke cavity after injection into the stroke core. Here, the goal is to study NPC fate inside MAP scaffolds in vitro. To create plain microgels that can later be converted to contain different types of bioactivities, the inverse electron-demand Diels-Alder reaction between tetrazine and norbornene is utilized, which allows the post-modification of plain microgels stoichiometrically. As a result of adhesive peptide attachment, NPC spreading leads to contractile force generation which can be recorded by tracking microgel displacement. Alternatively, non-adhesive peptide integration results in neurosphere formation that grows within the void space of MAP scaffolds. Although the formed neurospheres do not impose a contractile force on the scaffolds, they are seen to continuously transverse the scaffolds. It is concluded that MAP scaffolds can be engineered to either promote neurogenesis or enhance stemness depending on the chosen post-modifications of the microgels, which can be key in modulating their phenotypes in various applications in vivo.
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Affiliation(s)
- Katrina L Wilson
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708-0281, USA
| | - Sasha Cai Lesher Pérez
- Department of Chemical Engineering, University of Michigan, North Campus Research Complex, Building 28, 2800 Plymouth Rd, Ann Arbor, MI, 48109-2800, USA
| | - Moawiah M Naffaa
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, 27710, USA
- Department of Psychology and Neuroscience, Duke University, Durham, NC, 27708, USA
| | - Sean H Kelly
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708-0281, USA
| | - Tatiana Segura
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708-0281, USA
- Department of Neurology, Duke University, Durham, NC, 27708-0281, USA
- Department of Dermatology, Duke University, Durham, NC, 27708-0281, USA
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164
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Clickable Biomaterials for Modulating Neuroinflammation. Int J Mol Sci 2022; 23:ijms23158496. [PMID: 35955631 PMCID: PMC9369181 DOI: 10.3390/ijms23158496] [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: 06/23/2022] [Revised: 07/27/2022] [Accepted: 07/27/2022] [Indexed: 02/04/2023] Open
Abstract
Crosstalk between the nervous and immune systems in the context of trauma or disease can lead to a state of neuroinflammation or excessive recruitment and activation of peripheral and central immune cells. Neuroinflammation is an underlying and contributing factor to myriad neuropathologies including neurodegenerative diseases like Alzheimer’s disease and Parkinson’s disease; autoimmune diseases like multiple sclerosis; peripheral and central nervous system infections; and ischemic and traumatic neural injuries. Therapeutic modulation of immune cell function is an emerging strategy to quell neuroinflammation and promote tissue homeostasis and/or repair. One such branch of ‘immunomodulation’ leverages the versatility of biomaterials to regulate immune cell phenotypes through direct cell-material interactions or targeted release of therapeutic payloads. In this regard, a growing trend in biomaterial science is the functionalization of materials using chemistries that do not interfere with biological processes, so-called ‘click’ or bioorthogonal reactions. Bioorthogonal chemistries such as Michael-type additions, thiol-ene reactions, and Diels-Alder reactions are highly specific and can be used in the presence of live cells for material crosslinking, decoration, protein or cell targeting, and spatiotemporal modification. Hence, click-based biomaterials can be highly bioactive and instruct a variety of cellular functions, even within the context of neuroinflammation. This manuscript will review recent advances in the application of click-based biomaterials for treating neuroinflammation and promoting neural tissue repair.
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165
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Huang Y, Yu D, Fu C, Guo R, Wu C, Lin Y. Recent advances in multi-mechanism design of crack-resistant hydrogels. SOFT MATTER 2022; 18:5153-5165. [PMID: 35788619 DOI: 10.1039/d2sm00632d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
For conventional hydrogels, the phenomenon of crack generation and propagation caused by high-stress concentration is ubiquitous. However, this phenomenon is unfavorable in many applications, such as wearable electronics, tissue engineering, and tunable adhesion. Fortunately, many hydrogels that can suppress crack growth during deformation and maintain the original mechanical properties during deformation, called crack-resistant hydrogels, have been published. Herein, the state-of-the-art of crack-resistant hydrogels is comprehensively reviewed. Starting from the principle of designing a crack-resistant hydrogel, we first survey the relevant crack-resistant strategies. The latest crack-resistant hydrogels are then categorized according to their crack-resistant mechanisms (including energy dissipation at the molecular level, multiscale structure, crack pinning, crack deflection, and sliding of chain), and their crack-resistant processes are described in detail. Furthermore, we summarize the current challenges and make an outlook for crack-resistant hydrogels, which might lead to substantial progress in the future design and development of these high-performance materials.
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Affiliation(s)
- Yifan Huang
- Department of Physics, Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, P. R. China.
| | - Deshuai Yu
- Department of Physics, Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, P. R. China.
| | - Cong Fu
- Department of Physics, Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, P. R. China.
| | - Rongrong Guo
- Department of Physics, Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, P. R. China.
| | - Chenxu Wu
- Department of Physics, Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, P. R. China.
| | - Youhui Lin
- Department of Physics, Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, P. R. China.
- National Institute for Data Science in Health and Medicine, Xiamen University, Xiamen 361102, P. R. China
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166
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Dhand AP, Davidson MD, Galarraga JH, Qazi TH, Locke RC, Mauck RL, Burdick JA. Simultaneous One-Pot Interpenetrating Network Formation to Expand 3D Processing Capabilities. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2202261. [PMID: 35510317 PMCID: PMC9283285 DOI: 10.1002/adma.202202261] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/28/2022] [Indexed: 05/31/2023]
Abstract
The incorporation of a secondary network into traditional single-network hydrogels can enhance mechanical properties, such as toughness and loading to failure. These features are important for many applications, including as biomedical materials; however, the processing of interpenetrating polymer network (IPN) hydrogels is often limited by their multistep fabrication procedures. Here, a one-pot scheme for the synthesis of biopolymer IPN hydrogels mediated by the simultaneous crosslinking of two independent networks with light, namely: i) free-radical crosslinking of methacrylate-modified hyaluronic acid (HA) to form the primary network and ii) thiol-ene crosslinking of norbornene-modified HA with thiolated guest-host assemblies of adamantane and β-cyclodextrin to form the secondary network, is reported. The mechanical properties of the IPN hydrogels are tuned by changing the network composition, with high water content (≈94%) hydrogels exhibiting excellent work of fracture, tensile strength, and low hysteresis. As proof-of-concept, the IPN hydrogels are implemented as low-viscosity Digital Light Processing resins to fabricate complex structures that recover shape upon loading, as well as in microfluidic devices to form deformable microparticles. Further, the IPNs are cytocompatible with cell adhesion dependent on the inclusion of adhesive peptides. Overall, the enhanced processing of these IPN hydrogels will expand their utility across applications.
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Affiliation(s)
- Abhishek P Dhand
- Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Matthew D Davidson
- Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, 19104, USA
- BioFrontiers Institute and Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, 80309, USA
| | - Jonathan H Galarraga
- Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Taimoor H Qazi
- Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Ryan C Locke
- Translational Musculoskeletal Research Center, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA, 19104, USA
- Department of Orthopaedic Surgery, McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Robert L Mauck
- Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Translational Musculoskeletal Research Center, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA, 19104, USA
- Department of Orthopaedic Surgery, McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Jason A Burdick
- Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, 19104, USA
- BioFrontiers Institute and Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, 80309, USA
- Translational Musculoskeletal Research Center, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA, 19104, USA
- Department of Orthopaedic Surgery, McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, PA, 19104, USA
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167
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Akbari M, Khademhosseini A. Tissue bioprinting for biology and medicine. Cell 2022; 185:2644-2648. [DOI: 10.1016/j.cell.2022.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/06/2022] [Accepted: 06/08/2022] [Indexed: 10/17/2022]
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168
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Fan C, Yang W, Zhang L, Cai H, Zhuang Y, Chen Y, Zhao Y, Dai J. Restoration of spinal cord biophysical microenvironment for enhancing tissue repair by injury-responsive smart hydrogel. Biomaterials 2022; 288:121689. [DOI: 10.1016/j.biomaterials.2022.121689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 06/10/2022] [Accepted: 07/18/2022] [Indexed: 11/02/2022]
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169
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El Hamoui O, Saydé T, Svahn I, Gudin A, Gontier E, Le Coustumer P, Verget J, Barthélémy P, Gaudin K, Battu S, Lespes G, Alies B. Nucleoside-Derived Low-Molecular-Weight Gelators as a Synthetic Microenvironment for 3D Cell Culture. ACS Biomater Sci Eng 2022; 8:3387-3398. [PMID: 35772731 DOI: 10.1021/acsbiomaterials.2c00308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
For the last few decades, many efforts have been made in developing cell culture methods in order to overcome the biological limitations of the conventional two-dimensional culture. This paradigm shift is driven by a large amount of new hydrogel-based systems for three-dimensional culture, among other systems, since they are known to mimic some living tissue properties. One class of hydrogel precursors has received interest in the field of biomaterials, low-molecular-weight gelators (LMWGs). In comparison to polymer gels, LMWG gels are formed by weak interactions upon an external trigger between the molecular subunits, giving them the ability to reverse the gelation, thus showing potential for many applications of practical interest. This study presents the use of the nucleoside derivative subclass of LMWGs, which are glyco-nucleo-bola-amphiphiles, as a proof of concept of a 3D cell culture scaffold. Physicochemical characterization was performed in order to reach the optimal features to fulfill the requirements of the cell culture microenvironment, in terms of the mechanical properties, architecture, molecular diffusion, porosity, and experimental practicality. The retained conditions were tested by culturing glioblastoma cells for over a month. The cell viability, proliferation, and spatial organization showed during the experiments demonstrate the proof of concept of nucleoside-derived LMWGs as a soft 3D cell culture scaffold. One of the hydrogels tested permits cell proliferation and spheroidal organization over the entire culture time. These systems offer many advantages as they consume very few matters within the optimal range of viscoelasticity for cell culture, and the thermoreversibility of these hydrogels permits their use with few instruments. The LMWG-based scaffold for the 3D cell culture presented in this study unlocked the ability to grow spheroids from patient cells to reach personalized therapies by dramatically reducing the variability of the lattice used.
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Affiliation(s)
- Omar El Hamoui
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France.,Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), Université de Pau et des Pays de l'Adour (E2S/UPPA) CNRS UMR 5254, 2 Avenue Pierre Angot, 64053 Pau Cedex, France
| | - Tarek Saydé
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France.,Université de Limoges, UMR INSERM 1308 CAPTuR, Faculté de Médecine, 87025 Limoges, France
| | - Isabelle Svahn
- Université de Bordeaux, CNRS, INSERM, Bordeaux Imaging Center, BIC, UMS 3420, US 4, F-33000 Bordeaux, France
| | - Antoine Gudin
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France
| | - Etienne Gontier
- Université de Bordeaux, CNRS, INSERM, Bordeaux Imaging Center, BIC, UMS 3420, US 4, F-33000 Bordeaux, France
| | - Philippe Le Coustumer
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), Université de Pau et des Pays de l'Adour (E2S/UPPA) CNRS UMR 5254, 2 Avenue Pierre Angot, 64053 Pau Cedex, France.,Université de Bordeaux, CNRS, INSERM, Bordeaux Imaging Center, BIC, UMS 3420, US 4, F-33000 Bordeaux, France
| | - Julien Verget
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France
| | - Philippe Barthélémy
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France
| | - Karen Gaudin
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France
| | - Serge Battu
- Université de Limoges, UMR INSERM 1308 CAPTuR, Faculté de Médecine, 87025 Limoges, France
| | - Gaëtane Lespes
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), Université de Pau et des Pays de l'Adour (E2S/UPPA) CNRS UMR 5254, 2 Avenue Pierre Angot, 64053 Pau Cedex, France
| | - Bruno Alies
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France
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170
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Nguyen DT, Ogando-Rivas E, Liu R, Wang T, Rubin J, Jin L, Tao H, Sawyer WW, Mendez-Gomez HR, Cascio M, Mitchell DA, Huang J, Sawyer WG, Sayour EJ, Castillo P. CAR T Cell Locomotion in Solid Tumor Microenvironment. Cells 2022; 11:1974. [PMID: 35741103 PMCID: PMC9221866 DOI: 10.3390/cells11121974] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 01/25/2023] Open
Abstract
The promising outcomes of chimeric antigen receptor (CAR) T cell therapy in hematologic malignancies potentiates its capability in the fight against many cancers. Nevertheless, this immunotherapy modality needs significant improvements for the treatment of solid tumors. Researchers have incrementally identified limitations and constantly pursued better CAR designs. However, even if CAR T cells are armed with optimal killer functions, they must overcome and survive suppressive barriers imposed by the tumor microenvironment (TME). In this review, we will discuss in detail the important role of TME in CAR T cell trafficking and how the intrinsic barriers contribute to an immunosuppressive phenotype and cancer progression. It is of critical importance that preclinical models can closely recapitulate the in vivo TME to better predict CAR T activity. Animal models have contributed immensely to our understanding of human diseases, but the intensive care for the animals and unreliable representation of human biology suggest in vivo models cannot be the sole approach to CAR T cell therapy. On the other hand, in vitro models for CAR T cytotoxic assessment offer valuable insights to mechanistic studies at the single cell level, but they often lack in vivo complexities, inter-individual heterogeneity, or physiologically relevant spatial dimension. Understanding the advantages and limitations of preclinical models and their applications would enable more reliable prediction of better clinical outcomes.
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Affiliation(s)
- Duy T. Nguyen
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611, USA; (D.T.N.); (W.W.S.); (W.G.S.)
| | - Elizabeth Ogando-Rivas
- Department of Neurosurgery, University of Florida, Gainesville, FL 32608, USA; (E.O.-R.); (R.L.); (L.J.); (H.T.); (H.R.M.-G.); (D.A.M.); (J.H.); (E.J.S.)
| | - Ruixuan Liu
- Department of Neurosurgery, University of Florida, Gainesville, FL 32608, USA; (E.O.-R.); (R.L.); (L.J.); (H.T.); (H.R.M.-G.); (D.A.M.); (J.H.); (E.J.S.)
| | - Theodore Wang
- College of Medicine, University of Florida, Gainesville, FL 32610, USA;
| | - Jacob Rubin
- Warrington College of Business, University of Florida, Gainesville, FL 32610, USA;
| | - Linchun Jin
- Department of Neurosurgery, University of Florida, Gainesville, FL 32608, USA; (E.O.-R.); (R.L.); (L.J.); (H.T.); (H.R.M.-G.); (D.A.M.); (J.H.); (E.J.S.)
| | - Haipeng Tao
- Department of Neurosurgery, University of Florida, Gainesville, FL 32608, USA; (E.O.-R.); (R.L.); (L.J.); (H.T.); (H.R.M.-G.); (D.A.M.); (J.H.); (E.J.S.)
| | - William W. Sawyer
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611, USA; (D.T.N.); (W.W.S.); (W.G.S.)
- Department of Pediatrics, Division of Pediatric Hematology Oncology, University of Florida, Gainesville, FL 32610, USA;
| | - Hector R. Mendez-Gomez
- Department of Neurosurgery, University of Florida, Gainesville, FL 32608, USA; (E.O.-R.); (R.L.); (L.J.); (H.T.); (H.R.M.-G.); (D.A.M.); (J.H.); (E.J.S.)
| | - Matthew Cascio
- Department of Pediatrics, Division of Pediatric Hematology Oncology, University of Florida, Gainesville, FL 32610, USA;
| | - Duane A. Mitchell
- Department of Neurosurgery, University of Florida, Gainesville, FL 32608, USA; (E.O.-R.); (R.L.); (L.J.); (H.T.); (H.R.M.-G.); (D.A.M.); (J.H.); (E.J.S.)
| | - Jianping Huang
- Department of Neurosurgery, University of Florida, Gainesville, FL 32608, USA; (E.O.-R.); (R.L.); (L.J.); (H.T.); (H.R.M.-G.); (D.A.M.); (J.H.); (E.J.S.)
| | - W. Gregory Sawyer
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611, USA; (D.T.N.); (W.W.S.); (W.G.S.)
| | - Elias J. Sayour
- Department of Neurosurgery, University of Florida, Gainesville, FL 32608, USA; (E.O.-R.); (R.L.); (L.J.); (H.T.); (H.R.M.-G.); (D.A.M.); (J.H.); (E.J.S.)
- Department of Pediatrics, Division of Pediatric Hematology Oncology, University of Florida, Gainesville, FL 32610, USA;
| | - Paul Castillo
- Department of Pediatrics, Division of Pediatric Hematology Oncology, University of Florida, Gainesville, FL 32610, USA;
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171
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Roosa C, Pruett L, Trujillo J, Rodriguez A, Pfaff B, Cornell N, Flanagan C, Griffin DR. Microfluidic Synthesis of Microgel Building Blocks for Microporous Annealed Particle Scaffold. J Vis Exp 2022:10.3791/64119. [PMID: 35781297 PMCID: PMC11110642 DOI: 10.3791/64119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2024] Open
Abstract
The microporous annealed particle (MAP) scaffold platform is a subclass of granular hydrogels. It is composed of an injectable slurry of microgels that can form a structurally stable scaffold with cell-scale porosity in situ following a secondary light-based chemical crosslinking step (i.e., annealing). MAP scaffold has shown success in a variety of regenerative medicine applications, including dermal wound healing, vocal fold augmentation, and stem cell delivery. This paper describes the methods for synthesis and characterization of poly(ethylene glycol) (PEG) microgels as the building blocks to form a MAP scaffold. These methods include the synthesis of a custom annealing macromer (MethMAL), determination of microgel precursor gelation kinetics, microfluidic device fabrication, microfluidic generation of microgels, microgel purification, and basic scaffold characterization, including microgel sizing and scaffold annealing. Specifically, the high-throughput microfluidic methods described herein can produce large volumes of microgels that can be used to generate MAP scaffolds for any desired application, especially in the field of regenerative medicine.
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Affiliation(s)
- Colleen Roosa
- Department of Biomedical Engineering, School of Engineering and Applied Sciences, University of Virginia
| | - Lauren Pruett
- Department of Biomedical Engineering, School of Engineering and Applied Sciences, University of Virginia
| | - Juliana Trujillo
- Department of Biomedical Engineering, School of Engineering and Applied Sciences, University of Virginia
| | - Areli Rodriguez
- Department of Biomedical Engineering, School of Engineering and Applied Sciences, University of Virginia
| | - Blaise Pfaff
- Department of Biomedical Engineering, School of Engineering and Applied Sciences, University of Virginia
| | - Nicholas Cornell
- Department of Biomedical Engineering, School of Engineering and Applied Sciences, University of Virginia
| | - Clare Flanagan
- Department of Biomedical Engineering, School of Engineering and Applied Sciences, University of Virginia
| | - Donald Richieri Griffin
- Department of Biomedical Engineering, School of Engineering and Applied Sciences, University of Virginia; Department of Chemical Engineering, School of Engineering and Applied Sciences, University of Virginia;
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172
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Extracellular vesicles enriched with an endothelial cell pro-survival microRNA affects skin tissue regeneration. MOLECULAR THERAPY. NUCLEIC ACIDS 2022; 28:307-327. [PMID: 35474734 PMCID: PMC9010519 DOI: 10.1016/j.omtn.2022.03.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 03/18/2022] [Indexed: 02/08/2023]
Abstract
Endothelial cell (EC) activity is essential for tissue regeneration in several (patho)physiological contexts. However, our capacity to deliver in vivo biomolecules capable of controlling EC fate is relatively limited. Here, we screened a library of microRNA (miR) mimics and identified 25 miRs capable of enhancing the survival of ECs exposed to ischemia-mimicking conditions. In vitro, we showed that miR-425-5p, one of the hits, was able to enhance EC survival and migration. In vivo, using a mouse Matrigel plug assay, we showed that ECs transfected with miR-425-5p displayed enhanced survival compared with scramble-transfected ECs. Mechanistically, we showed that miR-425-5p modulated the PTEN/PI3K/AKT pathway and inhibition of miR-425-5p target genes (DACH1, PTEN, RGS5, and VASH1) phenocopied the pro-survival. For the in vivo delivery of miR-425-5p, we modulated small extracellular vesicles (sEVs) with miR-425-5p and showed, in vitro, that miR-425-5p-modulated sEVs were (1) capable of enhancing the survival of ECs exposed to ischemia-mimic conditions, and (2) efficiently internalized by skin cells. Finally, using a streptozotocin-induced diabetic wound healing mouse model, we showed that, compared with miR-scrambled-modulated sEVs, topical administration of miR-425-5p-modulated sEVs significantly enhanced wound healing, a process mediated by enhanced vascularization and skin re-epithelialization.
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173
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Emerging Polymer Materials in Trackable Endovascular Embolization and Cell Delivery: From Hype to Hope. Biomimetics (Basel) 2022; 7:biomimetics7020077. [PMID: 35735593 PMCID: PMC9221114 DOI: 10.3390/biomimetics7020077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/05/2022] [Accepted: 06/08/2022] [Indexed: 02/01/2023] Open
Abstract
Minimally invasive endovascular embolization is a widely used clinical technique used for the occlusion of blood vessels to treat various diseases. Different occlusive agents ranging from gelatin foam to synthetic polymers such as poly(vinyl alcohol) (PVA) have been commercially used for embolization. However, these agents have some drawbacks, such as undesired toxicity and unintended and uncontrolled occlusion. To overcome these issues, several polymer-based embolic systems are under investigation including biocompatible and biodegradable microspheres, gelling liquid embolic with controlled occlusive features, and trackable microspheres with enhanced safety profiles. This review aims to summarize recent advances in current and emerging polymeric materials as embolization agents with varying material architectures. Furthermore, this review also explores the potential of combining injectable embolic agents and cell therapy to achieve more effective embolization with the promise of outstanding results in treating various devastating diseases. Finally, limitations and challenges in developing next-generation multifunctional embolic agents are discussed to promote advancement in this emerging field.
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174
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Mahdieh Z, Cherne MD, Fredrikson JP, Sidar B, Sanchez HS, Chang CB, Bimczok D, Wilking JN. Granular Matrigel: restructuring a trusted extracellular matrix material for improved permeability. Biomed Mater 2022; 17. [PMID: 35609584 DOI: 10.1088/1748-605x/ac7306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 05/24/2022] [Indexed: 11/11/2022]
Abstract
Matrigel is a polymeric extracellular matrix material produced by mouse cancer cells. Over the past four decades, Matrigel has been shown to support a wide variety of two- and three-dimensional cell and tissue culture applications including organoids. Despite widespread use, transport of molecules, cells, and colloidal particles through Matrigel can be limited. These limitations restrict cell growth, viability, and function and limit Matrigel applications. A strategy to improve transport through a hydrogel without modifying the chemistry or composition of the gel is to physically restructure the material into microscopic microgels and then pack them together to form a porous material. These 'granular' hydrogels have been created using a variety of synthetic hydrogels, but granular hydrogels composed of Matrigel have not yet been reported. Here we present a drop-based microfluidics approach for structuring Matrigel into a three-dimensional, mesoporous material composed of packed Matrigel microgels, which we call granular Matrigel. We show that restructuring Matrigel in this manner enhances the transport of colloidal particles and human dendritic cells (DCs) through the gel while providing sufficient mechanical support for culture of human gastric organoids (HGOs) and co-culture of human DCs with HGOs.
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Affiliation(s)
- Zahra Mahdieh
- Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, United States of America.,Center for Biofilm Engineering, Montana State University, Bozeman, MT, United States of America
| | - Michelle D Cherne
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT, United States of America
| | - Jacob P Fredrikson
- Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, United States of America.,Center for Biofilm Engineering, Montana State University, Bozeman, MT, United States of America
| | - Barkan Sidar
- Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, United States of America.,Center for Biofilm Engineering, Montana State University, Bozeman, MT, United States of America
| | - Humberto S Sanchez
- Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, United States of America.,Center for Biofilm Engineering, Montana State University, Bozeman, MT, United States of America
| | - Connie B Chang
- Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, United States of America.,Center for Biofilm Engineering, Montana State University, Bozeman, MT, United States of America
| | - Diane Bimczok
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT, United States of America
| | - James N Wilking
- Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, United States of America.,Center for Biofilm Engineering, Montana State University, Bozeman, MT, United States of America
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175
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Rai A, Ferrão R, Marta D, Vilaça A, Lino M, Rondão T, Ji J, Paiva A, Ferreira L. Antimicrobial Peptide-Tether Dressing Able to Enhance Wound Healing by Tissue Contact. ACS APPLIED MATERIALS & INTERFACES 2022; 14:24213-24228. [PMID: 35584375 DOI: 10.1021/acsami.2c06601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
No effective therapeutic dressings are currently available in the market that can prevent bacterial infection and simultaneously promote skin regeneration in diabetic patients. The lack of re-epithelization, prevalence of inflammation, and high risk of infection are hallmarks of non-healing wounds. Here, we have evaluated the antimicrobial and pro-regenerative effect of a relatively non-leaching LL37 peptide immobilized in polyurethane (PU)-based wound dressings (PU-adhesive-LL37 dressing). The PU-adhesive-LL37 (63 μg LL37NPs/cm2) dressing killed Gram-positive and Gram-negative bacteria in human serum without inducing bacterial resistance after 16 antimicrobial test cycles in contrast to commercially available dressings with the capacity to release antimicrobial Ag ions. Importantly, type II diabetic mice (db/db mice) treated with the PU-adhesive-LL37 dressing for different periods of time (6 or 14 days) showed enhanced wound healing and re-epithelialization (i.e., high keratin 14/5 levels) and lower macrophage infiltration in the wounds compared to animals treated with PU. The wounds treated with PU-adhesive-LL37 dressings showed also low expression of pro-inflammatory cytokines such as TNF-α and IL6 after 6 days of treatment, indicating that they act as an anti-inflammatory dressing. Additionally, PU-adhesive-LL37 dressings do not induce acute inflammatory responses in the peripheral blood mononuclear cells (PBMCs) after 3 days of exposure, in contrast to controls. Taken together, PU-adhesive-LL37NP dressings might prevent the bacterial infections and facilitate wound healing by tissue contact, inducing re-epithelialization and anti-inflammatory processes in diabetic conditions.
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Affiliation(s)
- Akhilesh Rai
- Faculty of Medicine, University of Coimbra, Coimbra 3000-354, Portugal
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-517, Portugal
| | - Rafaela Ferrão
- Faculty of Medicine, University of Coimbra, Coimbra 3000-354, Portugal
| | - Denise Marta
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-517, Portugal
| | - Andreia Vilaça
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-517, Portugal
| | - Miguel Lino
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-517, Portugal
| | - Tiago Rondão
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-517, Portugal
| | - Jian Ji
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Artur Paiva
- Unidade de Gestão Operacional de Citometria, Serviço de Patologia Clínica, Centro Hospitalar e Universitário de Coimbra, Coimbra 3001-301, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculdade de Medicina, Universidade de Coimbra, Polo III-Health Sciences Campus, Coimbra 3000-548, Portugal
- ESTESC-Coimbra Health School, Ciências Biomédicas Laboratoriais, Instituto Politécnico de Coimbra, Coimbra 3040-854, Portugal
| | - Lino Ferreira
- Faculty of Medicine, University of Coimbra, Coimbra 3000-354, Portugal
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-517, Portugal
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176
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Ning T, Yang F, Chen D, Jia Z, Yuan R, Du Z, Liu S, Yu Y, Dai X, Niu X, Fan Y. Synergistically Detachable Microneedle Dressing for Programmed Treatment of Chronic Wounds. Adv Healthc Mater 2022; 11:e2102180. [PMID: 35133082 DOI: 10.1002/adhm.202102180] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 01/25/2022] [Indexed: 12/19/2022]
Abstract
Chronic wounds such as diabetic feet undergo a lifetime risk of developing into incurable ulcers. Current treatments for chronic wounds remain unsatisfactory due to the lack of ideal wound dressings that integrate facile dressing change, long-acting treatment, and high therapeutic efficacy into one system. Herein, a synergistically detachable microneedle (MN) dressing with a dual-layer structure is presented to enable programmed treatment via one-time dressing application. Such a dual-layer dressing MN system (DDMNS) is composed of chitosan (CS) hydrogel dressing (CSHD) on top of a detachable MN patch with a CS tip and a polyvinyl pyrrolidone (PVP) backing substrate incorporated with magnesium (Mg). The synergistic detachment is achieved with the backing Mg/PVP substrate dissolving within minutes due to the local moist environment of the CSHD enhancing the reaction between Mg and inflammation microenvironment. The combined treatment of Mg and panax notoginseng saponins (PNS) loaded in DDMNS achieves antibacterial, neovascularization, and activating a benign immune response so that the three overlapping periods of the inflammation, tissue proliferation, and tissue remodeling of wound healing reach a dynamic balance. This advanced DDMNS provides a facile approach for the programmed treatment of chronic wound management indicating potential value in wound healing and other related biomedical fields.
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Affiliation(s)
- Tianqin Ning
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering Beihang University Beijing 100083 China
- Department of Biomedical Engineering School of Medicine Tsinghua University Tsinghua 100084 China
| | - Fenghe Yang
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering Beihang University Beijing 100083 China
| | - Danli Chen
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering Beihang University Beijing 100083 China
| | - Zhenzhen Jia
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering Beihang University Beijing 100083 China
| | - Rongqing Yuan
- Department of Biomedical Engineering School of Medicine Tsinghua University Tsinghua 100084 China
- Department of Chemistry Tsinghua University Tsinghua 100084 China
| | - Zhenqin Du
- Department of Engineering Science University of Oxford Oxford OX1 3PJ UK
| | - Shuaiyin Liu
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering Beihang University Beijing 100083 China
| | - Yao Yu
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering Beihang University Beijing 100083 China
| | - Xiaochuan Dai
- Department of Biomedical Engineering School of Medicine Tsinghua University Tsinghua 100084 China
| | - Xufeng Niu
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering Beihang University Beijing 100083 China
| | - Yubo Fan
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering Beihang University Beijing 100083 China
- School of Engineering Medicine Beihang University Beijing 100083 China
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177
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Derakhshan MA, Nazeri N, Khoshnevisan K, Heshmat R, Omidfar K. Three-layered PCL-collagen nanofibers containing melilotus officinalis extract for diabetic ulcer healing in a rat model. J Diabetes Metab Disord 2022; 21:313-321. [PMID: 35673445 PMCID: PMC9167341 DOI: 10.1007/s40200-022-00976-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 01/09/2022] [Indexed: 01/22/2023]
Abstract
Active wound dressing with physicochemical and biological characteristics is more effective in healing diabetic foot ulcer (DFU). In this study, a 3-layer electrospun nanofiber wound dressings was fabricated, while its outer, middle and inner layers of the scaffold were made of PCL, PCL/collagen and collagen nanofibers, respectively. Various amounts of Melilotus officinalis extract were also loaded in the collagen nanofibers as a biologically active compound. The diameter and morphology of the obtained nanofibers were investigated by scanning electron microscopy (SEM) and FT-IR spectroscopy to analyse the composition of prepared dressings. The efficacy of the fabricated dressings as wound healing agent was assessed in streptozotocin-induced diabetic rats. The results demonstrated that the mean diameter of nanofibers are 373 ± 179 nm, 266 ± 108 nm, 160 ± 52 nm, and 393 ± 131 nm for PCL, PCL/collagen, pure collagen, and collagen nanofibers containing 0.08 g extract, respectively. The histo-pathology and histomorphometry assessments demonstrate the herbal extract-loaded electrospun dressings (especially containing 0.08 g of the extract) are promising in improving the diabetic ulcer healing. Our results indicated that the combination of drug did not compromise the physicochemical characteristics of wound dressing, while improving its biological activities.
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Affiliation(s)
- Mohammad Ali Derakhshan
- Diabetes Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Niloofar Nazeri
- Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Kamyar Khoshnevisan
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Ramin Heshmat
- Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Kobra Omidfar
- Biosensor Research Center, Endocrinology and Metabolism Molecular–Cellular Sciences Institute, Tehran University of Medical Sciences, P.O. Box 14395/1179, Tehran, I.R. Iran
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178
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In silico optimization of heparin microislands in microporous annealed particle (MAP) hydrogel for endothelial cell migration. Acta Biomater 2022; 148:171-180. [PMID: 35660016 DOI: 10.1016/j.actbio.2022.05.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 05/03/2022] [Accepted: 05/27/2022] [Indexed: 11/24/2022]
Abstract
Biomaterials capable of generating growth factor gradients have shown success in guiding tissue regeneration, as growth factor gradients are a physiologic driver of cell migration. Of particular importance, a focus on promoting endothelial cell migration is vital to angiogenesis and new tissue formation. Microporous Annealed Particle (MAP) scaffolds represent a unique niche in the field of regenerative biomaterials research as an injectable biomaterial with an open porosity that allows cells to freely migrate independent of material degradation. Recently, we have used the MAP platform to heterogeneously include spatially isolated heparin-modified microgels (heparin microislands) which can sequester growth factors and guide cell migration. In in vitro sprouting angiogenesis assays, we observed a parabolic relationship between the percentage of heparin microislands and cell migration, where 10% heparin microislands had more endothelial cell migration compared to 1% and 100%. Due to the low number of heparin microisland ratios tested, we hypothesize the spacing between microgels can be further optimized. Rather than use purely empirical methods, which are both expensive and time intensive, we believe this challenge represents an opportunity to use computational modeling. Here we present the first agent-based model of a MAP scaffold to optimize the ratio of heparin microislands. Specifically, we develop a two-dimensional model in Hybrid Automata Library (HAL) of endothelial cell migration within the unique MAP scaffold geometry. Finally, we present how our model can accurately predict cell migration trends in vitro, and these studies provide insight on how computational modeling can be used to design particle-based biomaterials. STATEMENT OF SIGNIFICANCE: : While the combination of experimental and computational approaches is increasingly being used to gain a better understanding of cellular processes, their combination in biomaterials development has been relatively limited. Heparin microislands are spatially isolated heparin microgels; when located within a microporous annealed particle (MAP) scaffold, they can sequester and release growth factors. Importantly, we present the first agent-based model of MAP scaffolds to optimize the ratio of heparin microislands within the scaffold to promote endothelial cell migration. We demonstrate this model can accurately predict trends in vitro, thus opening a new avenue of research to aid in the design of MAP scaffolds.
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179
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Cotero V, Graf J, Miwa H, Hirschstein Z, Qanud K, Huerta TS, Tai N, Ding Y, Jimenez-Cowell K, Tomaio JN, Song W, Devarajan A, Tsaava T, Madhavan R, Wallace K, Loghin E, Morton C, Fan Y, Kao TJ, Akhtar K, Damaraju M, Barenboim L, Maietta T, Ashe J, Tracey KJ, Coleman TR, Di Carlo D, Shin D, Zanos S, Chavan SS, Herzog RI, Puleo C. Stimulation of the hepatoportal nerve plexus with focused ultrasound restores glucose homoeostasis in diabetic mice, rats and swine. Nat Biomed Eng 2022; 6:683-705. [PMID: 35361935 PMCID: PMC10127248 DOI: 10.1038/s41551-022-00870-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 02/18/2022] [Indexed: 12/17/2022]
Abstract
Peripheral neurons that sense glucose relay signals of glucose availability to integrative clusters of neurons in the brain. However, the roles of such signalling pathways in the maintenance of glucose homoeostasis and their contribution to disease are unknown. Here we show that the selective activation of the nerve plexus of the hepatic portal system via peripheral focused ultrasound stimulation (pFUS) improves glucose homoeostasis in mice and rats with insulin-resistant diabetes and in swine subject to hyperinsulinemic-euglycaemic clamps. pFUS modulated the activity of sensory projections to the hypothalamus, altered the concentrations of metabolism-regulating neurotransmitters, and enhanced glucose tolerance and utilization in the three species, whereas physical transection or chemical blocking of the liver-brain nerve pathway abolished the effect of pFUS on glucose tolerance. Longitudinal multi-omic profiling of metabolic tissues from the treated animals confirmed pFUS-induced modifications of key metabolic functions in liver, pancreas, muscle, adipose, kidney and intestinal tissues. Non-invasive ultrasound activation of afferent autonomic nerves may represent a non-pharmacologic therapy for the restoration of glucose homoeostasis in type-2 diabetes and other metabolic diseases.
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Affiliation(s)
- Victoria Cotero
- General Electric (GE) Research, 1 Research Circle, Niskayuna, NY, USA
| | - John Graf
- General Electric (GE) Research, 1 Research Circle, Niskayuna, NY, USA
| | - Hiromi Miwa
- University of California, Los Angeles, Los Angeles, CA, USA
| | | | - Khaled Qanud
- Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | - Tomás S Huerta
- Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | | | - Yuyan Ding
- Yale School of Medicine, New Haven, CT, USA
| | - Kevin Jimenez-Cowell
- Yale School of Medicine, New Haven, CT, USA
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Weiguo Song
- Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | - Alex Devarajan
- Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | - Tea Tsaava
- Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | - Radhika Madhavan
- General Electric (GE) Research, 1 Research Circle, Niskayuna, NY, USA
| | - Kirk Wallace
- General Electric (GE) Research, 1 Research Circle, Niskayuna, NY, USA
| | - Evelina Loghin
- General Electric (GE) Research, 1 Research Circle, Niskayuna, NY, USA
| | - Christine Morton
- General Electric (GE) Research, 1 Research Circle, Niskayuna, NY, USA
| | - Ying Fan
- General Electric (GE) Research, 1 Research Circle, Niskayuna, NY, USA
| | - Tzu-Jen Kao
- General Electric (GE) Research, 1 Research Circle, Niskayuna, NY, USA
| | | | | | | | | | - Jeffrey Ashe
- General Electric (GE) Research, 1 Research Circle, Niskayuna, NY, USA
| | - Kevin J Tracey
- Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | | | - Dino Di Carlo
- University of California, Los Angeles, Los Angeles, CA, USA
| | | | - Stavros Zanos
- Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | | | | | - Chris Puleo
- General Electric (GE) Research, 1 Research Circle, Niskayuna, NY, USA.
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180
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Injectable immunomodulation-based porous chitosan microspheres/HPCH hydrogel composites as a controlled drug delivery system for osteochondral regeneration. Biomaterials 2022; 285:121530. [DOI: 10.1016/j.biomaterials.2022.121530] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 03/23/2022] [Accepted: 04/14/2022] [Indexed: 12/16/2022]
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181
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Zhang H, Zhang L, An C, Zhang Y, Shao F, Gao Y, Zhang Y, Li H, Zhang Y, Ren C, Sun K, He W, Cheng F, Wang H, Weitz DA. Large-scale single-cell encapsulation in microgels through metastable droplet-templating combined with microfluidic-integration. Biofabrication 2022; 14. [PMID: 35593920 DOI: 10.1088/1758-5090/ac7168] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 05/05/2022] [Indexed: 11/11/2022]
Abstract
Current techniques for the generation of cell-laden microgels are limited by numerous challenges, including poorly uncontrolled batch-to-batch variations, processes that are both labor- and time-consuming, the high expense of devices and reagents, and low production rates; this hampers the translation of laboratory findings to clinical applications. To address these challenges, we develop a droplet-based microfluidic strategy based on metastable droplet-templating and microchannel integration for the substantial large-scale production of single cell-laden alginate microgels. Specifically, we present a continuous processing method for microgel generation by introducing amphiphilic perfluoronated alcohols to obtain metastable emulsion droplets as sacrificial templates. In addition, to adapt to the metastable emulsion system, integrated microfluidic chips containing 80 drop-maker units are designed and optimized based on the computational fluid dynamics simulation. This strategy allows single cell encapsulation in microgels at a maximum production rate of 10 ml hr-1 of cell suspension while retaining cell viability and functionality. These results represent a significant advance toward using cell-laden microgels for clinical-relevant applications, including cell therapy, tissue regeneration and 3D bioprinting.
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Affiliation(s)
- Haoyue Zhang
- Dalian University of Technology, Dalian University of Technology, No.2 Linggong Road, High-tech District, Dalian, 116024, P.R.China, Dalian, Liaoning, 116024, CHINA
| | - Liyuan Zhang
- Harvard School of Engineering and Applied Sciences, Harvard University, Pierce Hall, 29 Oxford Street, Cambridge, MA 02138, Cambridge, Massachusetts, MA 02138, UNITED STATES
| | - Chuanfeng An
- Dalian University of Technology, Dalian University of Technology, No.2 Linggong Road, High-tech District, Dalian, 116024, P.R.China, Dalian, Liaoning, 116024, CHINA
| | - Yang Zhang
- Shenzhen University, Laboratory of Regenerative Biomaterials, Department of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, 518037, P.R. China, Shenzhen, Guangdong, 518037, CHINA
| | - Fei Shao
- Dalian University of Technology, Dalian University of Technology, No.2 Linggong Road, High-tech District, Dalian, 116024, P.R.China, Dalian, Liaoning, 116024, CHINA
| | - Yijie Gao
- Dalian Municipal Central Hospital Affiliated of Dalian Medical University, 42 Xuegong Street, Shahekou district, Dalian, Liaoning province, Dalian, Liaoning, 116033, CHINA
| | - Yonghao Zhang
- Dalian University of Technology, Dalian University of Technology, No.2 Linggong Road, High-tech District, Dalian, 116024, P.R.China, Dalian, Liaoning, 116024, CHINA
| | - Hanting Li
- Dalian University of Technology, Dalian University of Technology, No.2 Linggong Road, High-tech District, Dalian, 116024, P.R.China, Dalian, Liaoning, 116024, CHINA
| | - Yujie Zhang
- Dalian University of Technology, Dalian University of Technology, No.2 Linggong Road, High-tech District, Dalian, 116024, P.R.China, Dalian, Liaoning, 116024, CHINA
| | - Changle Ren
- Dalian Municipal Central Hospital Affiliated of Dalian Medical University, 42 Xuegong Street, Shahekou district, Dalian, Liaoning province, Dalian, Liaoning, 116033, CHINA
| | - Kai Sun
- Dalian University of Technology, Dalian University of Technology, No.2 Linggong Road, High-tech District, Dalian, 116024, P.R.China, Dalian, Liaoning, 116024, CHINA
| | - Wei He
- Dalian University of Technology, Dalian University of Technology, No.2 Linggong Road, High-tech District, Dalian, 116024, P.R.China, Dalian, Liaoning, 116024, CHINA
| | - Fang Cheng
- Dalian University of Technology, Dalian University of Technology, No.2 Linggong Road, High-tech District, Dalian, 116024, P.R.China, Dalian, Liaoning, 116024, CHINA
| | - Huanan Wang
- dalian university of technology, Dalian University of Technology, Dalian University of Technology, No.2 Linggong Road, High-tech District, Dalian, 116024, P.R.China, Dalian, 116024, CHINA
| | - David A Weitz
- Harvard School of Engineering and Applied Sciences, Harvard University, Pierce Hall, 29 Oxford Street, Cambridge, MA 02138, Cambridge, Massachusetts, MA 02138, UNITED STATES
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182
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Development of a nanocapsule-loaded hydrogel for drug delivery for intraperitoneal administration. Int J Pharm 2022; 622:121828. [PMID: 35595041 DOI: 10.1016/j.ijpharm.2022.121828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 05/01/2022] [Accepted: 05/09/2022] [Indexed: 11/22/2022]
Abstract
Intraperitoneal (IP) drug delivery of chemotherapeutic agents, administered through hyperthermal intraperitoneal chemotherapy (HIPEC) and pressurized intraperitoneal aerosolized chemotherapy (PIPAC), is effective for the treatment of peritoneal malignancies. However, these therapeutic interventions are cumbersome in terms of surgical practice and are often associated with the formation of peritoneal adhesions, due to the catheters inserted into the peritoneal cavity during these procedures. Hence, there is a need for the development of drug delivery systems that can be administered into the peritoneal cavity. In this study, we have developed a nanocapsule (NCs)-loaded hydrogel for drug delivery in the peritoneal cavity. The hydrogel has been developed using poly(ethylene glycol) (PEG) and thiol-maleimide chemistry. NCs-loaded hydrogels were characterized by rheology and their resistance to dilution and drug release were determined in vitro. Using IVIS® to measure individual organ and recovered gel fluorescence intensity, an in vivo imaging study was performed and demonstrated that NCs incorporated in the PEG gel were retained in the IP cavity for 24 h after IP administration. NCs-loaded PEG gels could find potential applications as biodegradable, drug delivery systems that could be implanted in the IP cavity, for example at a the tumour resection site to prevent recurrence of microscopic tumours.
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183
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Muir VG, Prendergast ME, Burdick JA. Fragmenting Bulk Hydrogels and Processing into Granular Hydrogels for Biomedical Applications. J Vis Exp 2022:10.3791/63867. [PMID: 35662235 PMCID: PMC11022187 DOI: 10.3791/63867] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2024] Open
Abstract
Granular hydrogels are jammed assemblies of hydrogel microparticles (i.e., "microgels"). In the field of biomaterials, granular hydrogels have many advantageous properties, including injectability, microscale porosity, and tunability by mixing multiple microgel populations. Methods to fabricate microgels often rely on water-in-oil emulsions (e.g., microfluidics, batch emulsions, electrospraying) or photolithography, which may present high demands in terms of resources and costs, and may not be compatible with many hydrogels. This work details simple yet highly effective methods to fabricate microgels using extrusion fragmentation and to process them into granular hydrogels useful for biomedical applications (e.g., 3D printing inks). First, bulk hydrogels (using photocrosslinkable hyaluronic acid (HA) as an example) are extruded through a series of needles with sequentially smaller diameters to form fragmented microgels. This microgel fabrication technique is rapid, low-cost, and highly scalable. Methods to jam microgels into granular hydrogels by centrifugation and vacuum-driven filtration are described, with optional post-crosslinking for hydrogel stabilization. Lastly, granular hydrogels fabricated from fragmented microgels are demonstrated as extrusion printing inks. While the examples described herein use photocrosslinkable HA for 3D printing, the methods are easily adaptable for a wide variety of hydrogel types and biomedical applications.
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Affiliation(s)
- Victoria G Muir
- Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania
| | - Margaret E Prendergast
- Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania
| | - Jason A Burdick
- Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania; BioFrontiers Institute, University of Colorado Boulder; Department of Chemical and Biological Engineering, College of Engineering and Applied Science, University of Colorado Boulder;
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184
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Deng X, Gould M, Ali MA. A review of current advancements for wound healing: Biomaterial applications and medical devices. J Biomed Mater Res B Appl Biomater 2022; 110:2542-2573. [PMID: 35579269 PMCID: PMC9544096 DOI: 10.1002/jbm.b.35086] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/28/2022] [Accepted: 04/30/2022] [Indexed: 12/12/2022]
Abstract
Wound healing is a complex process that is critical in restoring the skin's barrier function. This process can be interrupted by numerous diseases resulting in chronic wounds that represent a major medical burden. Such wounds fail to follow the stages of healing and are often complicated by a pro‐inflammatory milieu attributed to increased proteinases, hypoxia, and bacterial accumulation. The comprehensive treatment of chronic wounds is still regarded as a significant unmet medical need due to the complex symptoms caused by the metabolic disorder of the wound microenvironment. As a result, several advanced medical devices, such as wound dressings, wearable wound monitors, negative pressure wound therapy devices, and surgical sutures, have been developed to correct the chronic wound environment and achieve skin tissue regeneration. Most medical devices encompass a wide range of products containing natural (e.g., chitosan, keratin, casein, collagen, hyaluronic acid, alginate, and silk fibroin) and synthetic (e.g., polyvinyl alcohol, polyethylene glycol, poly[lactic‐co‐glycolic acid], polycaprolactone, polylactic acid) polymers, as well as bioactive molecules (e.g., chemical drugs, silver, growth factors, stem cells, and plant compounds). This review addresses these medical devices with a focus on biomaterials and applications, aiming to deliver a critical theoretical reference for further research on chronic wound healing.
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Affiliation(s)
- Xiaoxuan Deng
- Centre for Bioengineering & Nanomedicine (Dunedin), Department of Oral Rehabilitation, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - Maree Gould
- Centre for Bioengineering & Nanomedicine (Dunedin), Department of Oral Rehabilitation, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - M Azam Ali
- Centre for Bioengineering & Nanomedicine (Dunedin), Department of Oral Rehabilitation, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
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185
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Edwards SD, Hou S, Brown JM, Boudreau RD, Lee Y, Kim YJ, Jeong KJ. Fast-Curing Injectable Microporous Hydrogel for In Situ Cell Encapsulation. ACS APPLIED BIO MATERIALS 2022; 5:2786-2794. [DOI: 10.1021/acsabm.2c00214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Seth D. Edwards
- Department of Chemical Engineering, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Shujie Hou
- Department of Chemical Engineering, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Jason M. Brown
- Department of Chemical Engineering, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Ryann D. Boudreau
- Department of Chemical Engineering, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Yuhan Lee
- Engineering in Medicine, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Young Jo Kim
- Department of Chemical Engineering, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Kyung Jae Jeong
- Department of Chemical Engineering, University of New Hampshire, Durham, New Hampshire 03824, United States
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186
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LeValley PJ, Parsons AL, Sutherland BP, Kiick KL, Oakey JS, Kloxin AM. Microgels Formed by Spontaneous Click Chemistries Utilizing Microfluidic Flow Focusing for Cargo Release in Response to Endogenous or Exogenous Stimuli. Pharmaceutics 2022; 14:1062. [PMID: 35631649 PMCID: PMC9145542 DOI: 10.3390/pharmaceutics14051062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 05/04/2022] [Accepted: 05/09/2022] [Indexed: 02/05/2023] Open
Abstract
Protein therapeutics have become increasingly popular for the treatment of a variety of diseases owing to their specificity to targets of interest. However, challenges associated with them have limited their use for a range of ailments, including the limited options available for local controlled delivery. To address this challenge, degradable hydrogel microparticles, or microgels, loaded with model biocargoes were created with tunable release profiles or triggered burst release using chemistries responsive to endogenous or exogeneous stimuli, respectively. Specifically, microfluidic flow-focusing was utilized to form homogenous microgels with different spontaneous click chemistries that afforded degradation either in response to redox environments for sustained cargo release or light for on-demand cargo release. The resulting microgels were an appropriate size to remain localized within tissues upon injection and were easily passed through a needle relevant for injection, providing means for localized delivery. Release of a model biopolymer was observed over the course of several weeks for redox-responsive formulations or triggered for immediate release from the light-responsive formulation. Overall, we demonstrate the ability of microgels to be formulated with different materials chemistries to achieve various therapeutic release modalities, providing new tools for creation of more complex protein release profiles to improve therapeutic regimens.
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Affiliation(s)
- Paige J. LeValley
- Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA; (P.J.L.); (B.P.S.)
| | - Amanda L. Parsons
- Chemical Engineering, University of Wyoming, Laramie, WY 82071, USA;
| | - Bryan P. Sutherland
- Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA; (P.J.L.); (B.P.S.)
| | - Kristi L. Kiick
- Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA;
- Biomedical Engineering, University of Delaware, Newark, DE 19716, USA
| | - John S. Oakey
- Chemical Engineering, University of Wyoming, Laramie, WY 82071, USA;
| | - April M. Kloxin
- Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA; (P.J.L.); (B.P.S.)
- Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA;
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187
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Yao S, Luo Y, Wang Y. Engineered Microneedles Arrays for Wound Healing. ENGINEERED REGENERATION 2022. [DOI: 10.1016/j.engreg.2022.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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188
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Hu P, Lei Q, Duan S, Fu Y, Pan H, Chang C, Zheng Z, Wu Y, Zhang Z, Li R, Li YY, Ao N. In-situ formable dextran/chitosan-based hydrogels functionalized with collagen and EGF for diabetic wounds healing. BIOMATERIALS ADVANCES 2022; 136:212773. [PMID: 35929312 DOI: 10.1016/j.bioadv.2022.212773] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/05/2022] [Accepted: 03/20/2022] [Indexed: 06/15/2023]
Abstract
Delayed or non-healing skin wounds causing gangrene or even amputation, greatly threats diabetic patients lives. Herein, a bioactive, in-situ formable hydrogel based wound dressing was designed through simple Schiff base reaction. Oxidized dextran (OD) and carboxyethyl chitosan (CEC) were crosslinked together and applied as the main porous framework of hydrogel. To improve the mechanical strength and biocompatibility, collagen (Col) and EGF (Epidermal Growth Factor) were introduced into OD-CEC precursors: (1) after addition of only Col, the mechanical strength of hydrogels was improved by participating the functional -NH2 group of Col into the crosslinking process. Moreover, swelling ratio was as high as 750% on 3%OD-3%CEC-Col (water retention rate was 65 wt% after 7 days). (2) Once we introduced both Col and EGF into the OD-CEC hydrogel, the proliferation of mouse embryonic fibroblast (NIH 3T3) cells was promoted using 3%OD-3%CEC-Col/EGF, an accelerated wound healing was observed with 86% wound closure after only 14 operative days. Hematoxylin and eosin (H&E) staining and Masson staining indicated the synergy of Col and EGF might promote new tissue's formation, well collagen distributions and thus accelerate skin regeneration, presenting great potentials in wound healing of diabetic patients.
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Affiliation(s)
- Ping Hu
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou 510632, PR China; Henan Yadu Industrial Co. Ltd, Xinxiang 453000, PR China
| | - Qiqi Lei
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou 510632, PR China; Henan Yadu Industrial Co. Ltd, Xinxiang 453000, PR China
| | - Shuxia Duan
- Henan Yadu Industrial Co. Ltd, Xinxiang 453000, PR China; Key Laboratory of Medical Protective Equipment, Henan Province, PR China
| | - Yingkun Fu
- Henan Yadu Industrial Co. Ltd, Xinxiang 453000, PR China; Key Laboratory of Medical Protective Equipment, Henan Province, PR China
| | - Hongfu Pan
- Henan Yadu Industrial Co. Ltd, Xinxiang 453000, PR China
| | - Cong Chang
- Henan Yadu Industrial Co. Ltd, Xinxiang 453000, PR China
| | - Ziqi Zheng
- Henan Yadu Industrial Co. Ltd, Xinxiang 453000, PR China
| | - Yue Wu
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou 510632, PR China; Henan Yadu Industrial Co. Ltd, Xinxiang 453000, PR China
| | - Zhengnan Zhang
- Henan Yadu Industrial Co. Ltd, Xinxiang 453000, PR China; Key Laboratory of Medical Protective Equipment, Henan Province, PR China
| | - Riwang Li
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou 510632, PR China
| | - Yan Yan Li
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou 510632, PR China.
| | - Ningjian Ao
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou 510632, PR China.
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189
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Zarubova J, Hasani-Sadrabadi MM, Ardehali R, Li S. Immunoengineering strategies to enhance vascularization and tissue regeneration. Adv Drug Deliv Rev 2022; 184:114233. [PMID: 35304171 PMCID: PMC10726003 DOI: 10.1016/j.addr.2022.114233] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 03/07/2022] [Accepted: 03/11/2022] [Indexed: 12/11/2022]
Abstract
Immune cells have emerged as powerful regulators of regenerative as well as pathological processes. The vast majority of regenerative immunoengineering efforts have focused on macrophages; however, growing evidence suggests that other cells of both the innate and adaptive immune system are as important for successful revascularization and tissue repair. Moreover, spatiotemporal regulation of immune cells and their signaling have a significant impact on the regeneration speed and the extent of functional recovery. In this review, we summarize the contribution of different types of immune cells to the healing process and discuss ways to manipulate and control immune cells in favor of vascularization and tissue regeneration. In addition to cell delivery and cell-free therapies using extracellular vesicles, we discuss in situ strategies and engineering approaches to attract specific types of immune cells and modulate their phenotypes. This field is making advances to uncover the extraordinary potential of immune cells and their secretome in the regulation of vascularization and tissue remodeling. Understanding the principles of immunoregulation will help us design advanced immunoengineering platforms to harness their power for tissue regeneration.
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Affiliation(s)
- Jana Zarubova
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA; Department of Biomaterials and Tissue Engineering, Institute of Physiology of the Czech Academy of Sciences, Prague 14220, Czech Republic
| | | | - Reza Ardehali
- Division of Cardiology, Department of Internal Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; Eli and Edythe Broad Stem Cell Research Center, University of California, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Song Li
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA; Eli and Edythe Broad Stem Cell Research Center, University of California, Los Angeles, CA 90095, USA; Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA.
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190
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Niu C, Wang L, Ji D, Ren M, Ke D, Fu Q, Zhang K, Yang X. Fabrication of SA/Gel/C scaffold with 3D bioprinting to generate micro-nano porosity structure for skin wound healing: a detailed animal in vivo study. CELL REGENERATION (LONDON, ENGLAND) 2022; 11:10. [PMID: 35490207 PMCID: PMC9056587 DOI: 10.1186/s13619-022-00113-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 02/22/2022] [Indexed: 12/15/2022]
Abstract
Bioprinting has exhibited remarkable promises for the fabrication of functional skin substitutes. However, there are some significant challenges for the treatment of full-thickness skin defects in clinical practice. It is necessary to determine bioinks with suitable mechanical properties and desirable biocompatibilities. Additionally, the key for printing skin is to design the skin structure optimally, enabling the function of the skin. In this study, the full-thickness skin scaffolds were prepared with a gradient pore structure constructing the dense layer, epidermis, and dermis by different ratios of bioinks. We hypothesized that the dense layer protects the wound surface and maintains a moist environment on the wound surface. By developing a suitable hydrogel bioink formulation (sodium alginate/gelatin/collagen), to simulate the physiological structure of the skin via 3D printing, the proportion of hydrogels was optimized corresponding to each layer. These results reveal that the scaffold has interconnected macroscopic channels, and sodium alginate/gelatin/collagen scaffolds accelerated wound healing, reduced skin wound contraction, and re-epithelialization in vivo. It is expected to provide a rapid and economical production method of skin scaffolds for future clinical applications.
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Affiliation(s)
- Changmei Niu
- Novaprint Therapeutics Suzhou Co., Ltd, Suzhou, 215000, China
| | - Liyang Wang
- Novaprint Therapeutics Suzhou Co., Ltd, Suzhou, 215000, China.,Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Dongdong Ji
- Department of Burns and Plastic Surgery Affiliated Suzhou Hospital Of Nanjing Medical University, Suzhou, 215000, China
| | - Mingjun Ren
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Dongxu Ke
- Novaprint Therapeutics Suzhou Co., Ltd, Suzhou, 215000, China
| | - Qiang Fu
- The Department of Urology, Affiliated Sixth People's Hospital, Shanghai JiaoTong University, Shanghai, 200235, China.,Shanghai Eastern Institute of Urologic Reconstruction, Shanghai, 200000, China
| | - Kaile Zhang
- The Department of Urology, Affiliated Sixth People's Hospital, Shanghai JiaoTong University, Shanghai, 200235, China.,Shanghai Eastern Institute of Urologic Reconstruction, Shanghai, 200000, China
| | - Xi Yang
- Novaprint Therapeutics Suzhou Co., Ltd, Suzhou, 215000, China.
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191
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Cho SH, Shin KK, Kim SY, Cho MY, Oh DB, Lim YT. In Situ-Forming Collagen/poly-γ-glutamic Acid Hydrogel System with Mesenchymal Stem Cells and Bone Morphogenetic Protein-2 for Bone Tissue Regeneration in a Mouse Calvarial Bone Defect Model. Tissue Eng Regen Med 2022; 19:1099-1111. [PMID: 35460494 PMCID: PMC9477999 DOI: 10.1007/s13770-022-00454-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 02/21/2022] [Accepted: 03/14/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Bone marrow-derived mesenchymal stem cells (BMSCs) and bone morphogenetic protein-2 (BMP-2) have been studied for bone repair because they have regenerative potential to differentiate into osteoblasts. The development of injectable and in situ three-dimensional (3D) scaffolds to proliferate and differentiate BMSCs and deliver BMP-2 is a crucial technology in BMSC-based tissue engineering. METHODS The proliferation of mouse BMSCs (mBMSCs) in collagen/poly-γ-glutamic acid (Col/γ-PGA) hydrogel was evaluated using LIVE/DEAD and acridine orange and propidium iodide assays. In vitro osteogenic differentiation and the gene expression level of Col/γ-PGA(mBMSC/BMP-2) were assessed by alizarin red S staining and quantitative reverse-transcription polymerase chain reaction. The bone regeneration effect of Col/γ-PGA(mBMSC/BMP-2) was evaluated in a mouse calvarial bone defect model. The cranial bones of the mice were monitored by micro-computed tomography and histological analysis. RESULTS The developed Col/γ-PGA hydrogel showed low viscosity below ambient temperature, while it provided a high elastic modulus and viscous modulus at body temperature. After gelation, the Col/γ-PGA hydrogel showed a 3D and interconnected porous structure, which helped the effective proliferation of BMSCs with BMP-2. The Col/γ-PGA (mBMSC/BMP-2) expressed more osteogenic genes and showed effective orthotopic bone formation in a mouse model with a critical-sized bone defect in only 3-4 weeks. CONCLUSION The Col/γ-PGA(mBMSC/BMP-2) hydrogel was suggested to be a promising platform by combining collagen as a major component of the extracellular matrix and γ-PGA as a viscosity reducer for easy handling at room temperature in BMSC-based bone tissue engineering scaffolds.
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Affiliation(s)
- Sun-Hee Cho
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Republic of Korea
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Chungcheongbuk-do, 28119, Republic of Korea
| | - Keun Koo Shin
- Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Sun-Young Kim
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Republic of Korea
| | - Mi Young Cho
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Republic of Korea
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Chungcheongbuk-do, 28119, Republic of Korea
| | - Doo-Byoung Oh
- Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea.
- Department of Biosystems and Bioengineering, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea.
| | - Yong Taik Lim
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Republic of Korea.
- Department of Nano Engineering and School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Republic of Korea.
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192
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Safina I, Embree MC. Biomaterials for recruiting and activating endogenous stem cells in situ tissue regeneration. Acta Biomater 2022; 143:26-38. [PMID: 35292413 PMCID: PMC9035107 DOI: 10.1016/j.actbio.2022.03.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 02/28/2022] [Accepted: 03/07/2022] [Indexed: 12/20/2022]
Abstract
Over the past two decades in situ tissue engineering has emerged as a new approach where biomaterials are used to harness the body's own stem/progenitor cells to regenerate diseased or injured tissue. Immunomodulatory biomaterials are designed to promote a regenerative environment, recruit resident stem cells to diseased or injured tissue sites, and direct them towards tissue regeneration. This review explores advances gathered from in vitro and in vivo studies on in situ tissue regenerative therapies. Here we also examine the different ways this approach has been incorporated into biomaterial sciences in order to create customized biomaterial products for therapeutic applications in a broad spectrum of tissues and diseases. STATEMENT OF SIGNIFICANCE: Biomaterials can be designed to recruit stem cells and coordinate their behavior and function towards the restoration or replacement of damaged or diseased tissues in a process known as in situ tissue regeneration. Advanced biomaterial constructs with precise structure, composition, mechanical, and physical properties can be transplanted to tissue site and exploit local stem cells and their micro-environment to promote tissue regeneration. In the absence of cells, we explore the critical immunomodulatory, chemical and physical properties to consider in material design and choice. The application of biomaterials for in situ tissue regeneration has the potential to address a broad range of injuries and diseases.
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193
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Qazi TH, Muir VG, Burdick JA. Methods to Characterize Granular Hydrogel Rheological Properties, Porosity, and Cell Invasion. ACS Biomater Sci Eng 2022; 8:1427-1442. [PMID: 35330993 PMCID: PMC10994272 DOI: 10.1021/acsbiomaterials.1c01440] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Granular hydrogels are formed through the packing of hydrogel microparticles and are emerging for various biomedical applications, including as inks for 3D printing, substrates to study cell-matrix interactions, and injectable scaffolds for tissue repair. Granular hydrogels are suited for these applications because of their unique properties including inherent porosity, shear-thinning and self-healing behavior, and tunable design. The characterization of their material properties and biological response involves technical considerations that are unique to modular systems like granular hydrogels. Here, we describe detailed methods that can be used to quantitatively characterize the rheological behavior and porosity of granular hydrogels using reagents, tools, and equipment that are typically available in biomedical engineering laboratories. In addition, we detail methods for 3D cell invasion assays using multicellular spheroids embedded within granular hydrogels and describe steps to quantify features of cell outgrowth (e.g., endothelial cell sprouting) using standard image processing software. To illustrate these methods, we provide examples where features of granular hydrogels such as the size of hydrogel microparticles and their extent of packing during granular hydrogel formation are modulated. Our intent with this resource is to increase accessibility to granular hydrogel technology and to facilitate the investigation of granular hydrogels for biomedical applications.
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Affiliation(s)
- Taimoor H Qazi
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
| | - Victoria G Muir
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
| | - Jason A Burdick
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
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194
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Jang W, Kim DY, Mun SJ, Choi JH, Roh YH, Bong KW. Direct functionalization of cell‐adhesion promoters to hydrogel microparticles synthesized by stop‐flow lithography. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20210934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Wookyoung Jang
- Department of Chemical and Biological Engineering Korea University Seoul Republic of Korea
| | - Do Yeon Kim
- Department of Chemical and Biological Engineering Korea University Seoul Republic of Korea
| | - Seok Joon Mun
- Department of Chemical and Biological Engineering Korea University Seoul Republic of Korea
| | - Jun Hee Choi
- Department of Chemical and Biological Engineering Korea University Seoul Republic of Korea
| | - Yoon Ho Roh
- Department of Chemical and Biological Engineering Korea University Seoul Republic of Korea
| | - Ki Wan Bong
- Department of Chemical and Biological Engineering Korea University Seoul Republic of Korea
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195
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Liu AP, Appel EA, Ashby PD, Baker BM, Franco E, Gu L, Haynes K, Joshi NS, Kloxin AM, Kouwer PHJ, Mittal J, Morsut L, Noireaux V, Parekh S, Schulman R, Tang SKY, Valentine MT, Vega SL, Weber W, Stephanopoulos N, Chaudhuri O. The living interface between synthetic biology and biomaterial design. NATURE MATERIALS 2022; 21:390-397. [PMID: 35361951 PMCID: PMC10265650 DOI: 10.1038/s41563-022-01231-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 03/07/2022] [Indexed: 06/14/2023]
Abstract
Recent far-reaching advances in synthetic biology have yielded exciting tools for the creation of new materials. Conversely, advances in the fundamental understanding of soft-condensed matter, polymers and biomaterials offer new avenues to extend the reach of synthetic biology. The broad and exciting range of possible applications have substantial implications to address grand challenges in health, biotechnology and sustainability. Despite the potentially transformative impact that lies at the interface of synthetic biology and biomaterials, the two fields have, so far, progressed mostly separately. This Perspective provides a review of recent key advances in these two fields, and a roadmap for collaboration at the interface between the two communities. We highlight the near-term applications of this interface to the development of hierarchically structured biomaterials, from bioinspired building blocks to 'living' materials that sense and respond based on the reciprocal interactions between materials and embedded cells.
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Affiliation(s)
- Allen P Liu
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, USA.
| | - Eric A Appel
- Department of Materials Science & Engineering, Stanford University, Stanford, CA, USA
| | - Paul D Ashby
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Brendon M Baker
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Elisa Franco
- Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, Los Angeles, CA, USA
| | - Luo Gu
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Karmella Haynes
- Wallace H. Coulter Department of Biomedical Engineering, Emory University, Atlanta, GA, USA
| | - Neel S Joshi
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, USA
| | - April M Kloxin
- Department of Chemical and Biomolecular Engineering and Materials Science and Engineering, University of Delaware, Newark, DE, USA
| | - Paul H J Kouwer
- Institute for Molecules and Materials, Radboud University, Nijmegen, the Netherlands
| | - Jeetain Mittal
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, USA
| | - Leonardo Morsut
- Department of Stem Cell Biology and Regenerative Medicine, University of Southern California, Los Angeles, CA, USA
| | - Vincent Noireaux
- School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA
| | - Sapun Parekh
- Department of Biomedical Engineering, University of Texas, Austin, Austin, TX, USA
| | - Rebecca Schulman
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Sindy K Y Tang
- Department of Mechanical Engineering, Stanford University, Stanford, CA, USA
| | - Megan T Valentine
- Department of Mechanical Engineering, University of California, Santa Barbara, Santa Barbara, CA, USA
| | - Sebastián L Vega
- Department of Biomedical Engineering, Rowan University, Glassboro, NJ, USA
| | - Wilfried Weber
- Faculty of Biology and Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Freiburg, Germany
| | | | - Ovijit Chaudhuri
- Department of Mechanical Engineering, Stanford University, Stanford, CA, USA.
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196
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Wang X, Ansari A, Pierre V, Young K, Kothapalli CR, von Recum HA, Senyo SE. Injectable Extracellular Matrix Microparticles Promote Heart Regeneration in Mice with Post-ischemic Heart Injury. Adv Healthc Mater 2022; 11:e2102265. [PMID: 35118812 PMCID: PMC9035118 DOI: 10.1002/adhm.202102265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 12/28/2021] [Indexed: 12/20/2022]
Abstract
Ischemic heart injury causes permanent cardiomyocyte loss and fibrosis impairing cardiac function. Tissue derived biomaterials have shown promise as an injectable treatment for the post-ischemic heart. Specifically, decellularized extracellular matrix (dECM) is a protein rich suspension that forms a therapeutic hydrogel once injected and improves the heart post-injury response in rodents and pig models. Current dECM-derived biomaterials are delivered to the heart as a liquid dECM hydrogel precursor or colloidal suspension, which gels over several minutes. To increase the functionality of the dECM therapy, an injectable solid dECM microparticle formulation derived from heart tissue to control sizing and extend stability in aqueous conditions is developed. When delivered into the infarcted mouse heart, these dECM microparticles protect cardiac function promote vessel density and reduce left ventricular remodeling by sustained delivery of biomolecules. Longer retention, higher stiffness, and slower protein release of dECM microparticles are noted compared to liquid dECM hydrogel precursor. In addition, the dECM microparticle can be developed as a platform for macromolecule delivery. Together, the results suggest that dECM microparticles can be developed as a modular therapy for heart injury.
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Affiliation(s)
- Xinming Wang
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Ali Ansari
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Valinteshley Pierre
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Kathleen Young
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Chandrasekhar R. Kothapalli
- Department of Chemical and Biomedical Engineering, Cleveland State University, Cleveland, Ohio 44115, United States
| | - Horst A. von Recum
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Samuel E. Senyo
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
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197
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Rommel D, Mork M, Vedaraman S, Bastard C, Guerzoni LPB, Kittel Y, Vinokur R, Born N, Haraszti T, De Laporte L. Functionalized Microgel Rods Interlinked into Soft Macroporous Structures for 3D Cell Culture. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2103554. [PMID: 35032119 PMCID: PMC8981485 DOI: 10.1002/advs.202103554] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 12/12/2021] [Indexed: 05/11/2023]
Abstract
In this work, a two component microgel assembly using soft anisometric microgels that interlink to create a 3D macroporous construct for cell growth is reported. Reactive microgel rods with variable aspect ratio are produced via microfluidics in a continuous plug-flow on-chip gelation method by photoinitiated free-radical polymerization of star-polyethylene glycol-acrylate with glycidyl methacrylate or 2-aminoethyl methacrylate comonomers. The resulting complementary epoxy- and amine-functionalized microgels assemble and interlink with each other via a ring opening reaction, resulting in macroporous constructs with pores up to several hundreds of micrometers. The level of crosslinking depends on the functionalization degree of the microgels, which also affects the stiffness and cell adhesiveness of the microgels when modified with the cell-adhesive GRGDS-PC peptide. Therefore, 3D spreading and growth of cells inside the macroporous structure is influenced not only by the presence of macropores but also by the mechanical and biochemical properties of the individual microgels.
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Affiliation(s)
- Dirk Rommel
- DWI – Leibniz Institute for Interactive MaterialsAachen52074Germany
- Institute for Technical and Macromolecular ChemistryRWTH Aachen UniversityAachen52074Germany
| | - Matthias Mork
- DWI – Leibniz Institute for Interactive MaterialsAachen52074Germany
- Institute for Technical and Macromolecular ChemistryRWTH Aachen UniversityAachen52074Germany
| | - Sitara Vedaraman
- DWI – Leibniz Institute for Interactive MaterialsAachen52074Germany
- Institute for Technical and Macromolecular ChemistryRWTH Aachen UniversityAachen52074Germany
| | - Céline Bastard
- DWI – Leibniz Institute for Interactive MaterialsAachen52074Germany
- Institute for Technical and Macromolecular ChemistryRWTH Aachen UniversityAachen52074Germany
| | - Luis P. B. Guerzoni
- DWI – Leibniz Institute for Interactive MaterialsAachen52074Germany
- Institute for Technical and Macromolecular ChemistryRWTH Aachen UniversityAachen52074Germany
| | - Yonca Kittel
- DWI – Leibniz Institute for Interactive MaterialsAachen52074Germany
- Institute for Technical and Macromolecular ChemistryRWTH Aachen UniversityAachen52074Germany
| | | | | | - Tamás Haraszti
- DWI – Leibniz Institute for Interactive MaterialsAachen52074Germany
- Institute for Technical and Macromolecular ChemistryRWTH Aachen UniversityAachen52074Germany
| | - Laura De Laporte
- DWI – Leibniz Institute for Interactive MaterialsAachen52074Germany
- Institute for Technical and Macromolecular ChemistryRWTH Aachen UniversityAachen52074Germany
- Institute of Applied Medical EngineeringDepartment of Advanced Materials for BiomedicineRWTH Aachen UniversityAachen52074Germany
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198
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Sun J, Yin Z, Wang X, Su J. Exosome-Laden Hydrogels: A Novel Cell-free Strategy for In-situ Bone Tissue Regeneration. Front Bioeng Biotechnol 2022; 10:866208. [PMID: 35433664 PMCID: PMC9011111 DOI: 10.3389/fbioe.2022.866208] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 03/07/2022] [Indexed: 12/15/2022] Open
Abstract
In-situ bone tissue regeneration, which harnesses cell external microenvironment and their regenerative potential to induce cell functions and bone reconstruction through some special properties of biomaterials, has been deeply developed. In which, hydrogel was widely applied due to its 3D network structure with high water absorption and mimicking native extracellular matrix (ECM). Additionally, exosomes can participate in a variety of physiological processes such as cell differentiation, angiogenesis and tissue repair. Therefore, a novel cell-free tissue engineering (TE) using exosome-laden hydrogels has been explored and developed for bone regeneration in recent years. However, related reviews in this field are limited. Therefore, we elaborated on the shortcomings of traditional bone tissue engineering, the challenges of exosome delivery and emphasized the advantages of exosome-laden hydrogels for in-situ bone tissue regeneration. The encapsulation strategies of hydrogel and exosomes are listed, and the research progress and prospects of bioactive hydrogel composite system for continuous delivery of exosomes for in-situ bone repair are also discussed in this review.
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Affiliation(s)
- Jinru Sun
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Zhifeng Yin
- Department of Orthopedics, Shanghai Zhongye Hospital, Shanghai, China
| | - Xiuhui Wang
- Institute of Translational Medicine, Shanghai University, Shanghai, China
- *Correspondence: Xiuhui Wang, ; Jiacan Su,
| | - Jiacan Su
- Institute of Translational Medicine, Shanghai University, Shanghai, China
- Department of Orthopaedics Trauma, Changhai Hospital, Second Military Medical University, Shanghai, China
- *Correspondence: Xiuhui Wang, ; Jiacan Su,
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199
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ABSTRACTS (BY NUMBER). Tissue Eng Part A 2022. [DOI: 10.1089/ten.tea.2022.29025.abstracts] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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200
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Zheng W, Xie R, Liang X, Liang Q. Fabrication of Biomaterials and Biostructures Based On Microfluidic Manipulation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2105867. [PMID: 35072338 DOI: 10.1002/smll.202105867] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 12/22/2021] [Indexed: 06/14/2023]
Abstract
Biofabrication technologies are of importance for the construction of organ models and functional tissue replacements. Microfluidic manipulation, a promising biofabrication technique with micro-scale resolution, can not only help to realize the fabrication of specific microsized structures but also build biomimetic microenvironments for biofabricated tissues. Therefore, microfluidic manipulation has attracted attention from researchers in the manipulation of particles and cells, biochemical analysis, tissue engineering, disease diagnostics, and drug discovery. Herein, biofabrication based on microfluidic manipulation technology is reviewed. The application of microfluidic manipulation technology in the manufacturing of biomaterials and biostructures with different dimensions and the control of the microenvironment is summarized. Finally, current challenges are discussed and a prospect of microfluidic manipulation technology is given. The authors hope this review can provide an overview of microfluidic manipulation technologies used in biofabrication and thus steer the current efforts in this field.
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Affiliation(s)
- Wenchen Zheng
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Ruoxiao Xie
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Xiaoping Liang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangdong, 510006, China
| | - Qionglin Liang
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
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