1
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Jiang Y, Guo S, Jiao J, Li L. A Biphasic Hydrogel with Self-Healing Properties and a Continuous Layer Structure for Potential Application in Osteochondral Defect Repair. Polymers (Basel) 2023; 15:2744. [PMID: 37376390 DOI: 10.3390/polym15122744] [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: 05/25/2023] [Revised: 06/13/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
The treatment of osteochondral defects remains challenging due to the limited healing capacity of cartilage and the poor results of traditional methods. Inspired by the structure of natural articular cartilage, we have fabricated a biphasic osteochondral hydrogel scaffold using a Schiff base reaction and a free radical polymerization reaction. Carboxymethyl chitosan (CMCS), oxidized sodium alginate (OSA), and polyacrylamide (PAM) formed a hydrogel (COP) as the cartilage layer, while hydroxyapatite (HAp) was incorporated into the COP hydrogel to obtain a hydrogel (COPH) as an subchondral bone layer. At the same time, hydroxyapatite (HAp) was incorporated into the COP hydrogel to obtain a hydrogel (COPH) as an osteochondral sublayer, combining the two to obtain an integrated scaffold for osteochondral tissue engineering. Interlayer interpenetration through the continuity of the hydrogel substrate and good self-healing properties due to the dynamic imine bonding of the hydrogel resulted in enhanced interlayer bond strength. In addition, in vitro experiments have shown that the hydrogel exhibits good biocompatibility. It shows great potential for osteochondral tissue engineering applications.
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Affiliation(s)
- Yue Jiang
- College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
| | - Shanzhu Guo
- College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
| | - Jingjing Jiao
- College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
| | - Long Li
- College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
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2
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Tindell RK, McPhail MJ, Myers CE, Neubauer J, Hintze JM, Lott DG, Holloway JL. Trilayered Hydrogel Scaffold for Vocal Fold Tissue Engineering. Biomacromolecules 2022; 23:4469-4480. [DOI: 10.1021/acs.biomac.1c01149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- R. Kevin Tindell
- Chemical Engineering; School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Michael J. McPhail
- Head and Neck Regenerative Medicine Laboratory, Mayo Clinic Arizona, Scottsdale, Arizona 85259-5499, United States
| | - Cheryl E. Myers
- Head and Neck Regenerative Medicine Laboratory, Mayo Clinic Arizona, Scottsdale, Arizona 85259-5499, United States
| | - Juergen Neubauer
- Head and Neck Regenerative Medicine Laboratory, Mayo Clinic Arizona, Scottsdale, Arizona 85259-5499, United States
| | - Justin M. Hintze
- Head and Neck Regenerative Medicine Laboratory, Mayo Clinic Arizona, Scottsdale, Arizona 85259-5499, United States
| | - David G. Lott
- Head and Neck Regenerative Medicine Laboratory, Mayo Clinic Arizona, Scottsdale, Arizona 85259-5499, United States
- Division of Laryngology, Mayo Clinic Arizona, Phoenix, Arizona 85054, United States
| | - Julianne L. Holloway
- Chemical Engineering; School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
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3
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Al Maruf DSA, Ghosh YA, Xin H, Cheng K, Mukherjee P, Crook JM, Wallace GG, Klein TJ, Clark JR. Hydrogel: A Potential Material for Bone Tissue Engineering Repairing the Segmental Mandibular Defect. Polymers (Basel) 2022; 14:polym14194186. [PMID: 36236133 PMCID: PMC9571534 DOI: 10.3390/polym14194186] [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: 09/01/2022] [Revised: 09/25/2022] [Accepted: 09/27/2022] [Indexed: 11/16/2022] Open
Abstract
Free flap surgery is currently the only successful method used by surgeons to reconstruct critical-sized defects of the jaw, and is commonly used in patients who have had bony lesions excised due to oral cancer, trauma, infection or necrosis. However, donor site morbidity remains a significant flaw of this strategy. Various biomaterials have been under investigation in search of a suitable alternative for segmental mandibular defect reconstruction. Hydrogels are group of biomaterials that have shown their potential in various tissue engineering applications, including bone regeneration, both through in vitro and in vivo pre-clinical animal trials. This review discusses different types of hydrogels, their fabrication techniques, 3D printing, their potential for bone regeneration, outcomes, and the limitations of various hydrogels in preclinical models for bone tissue engineering. This review also proposes a modified technique utilizing the potential of hydrogels combined with scaffolds and cells for efficient reconstruction of mandibular segmental defects.
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Affiliation(s)
- D S Abdullah Al Maruf
- Integrated Prosthetics and Reconstruction, Department of Head and Neck Surgery, Chris O’Brien Lifehouse, Camperdown 2050, Australia
- Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Camperdown 2050, Australia
- Correspondence:
| | - Yohaann Ali Ghosh
- Integrated Prosthetics and Reconstruction, Department of Head and Neck Surgery, Chris O’Brien Lifehouse, Camperdown 2050, Australia
- Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Camperdown 2050, Australia
| | - Hai Xin
- Integrated Prosthetics and Reconstruction, Department of Head and Neck Surgery, Chris O’Brien Lifehouse, Camperdown 2050, Australia
- Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Camperdown 2050, Australia
| | - Kai Cheng
- Royal Prince Alfred Institute of Academic Surgery, Sydney Local, Camperdown 2050, Australia
| | - Payal Mukherjee
- Integrated Prosthetics and Reconstruction, Department of Head and Neck Surgery, Chris O’Brien Lifehouse, Camperdown 2050, Australia
- Royal Prince Alfred Institute of Academic Surgery, Sydney Local, Camperdown 2050, Australia
| | - Jeremy Micah Crook
- Biomedical Innovation, Chris O’Brien Lifehouse, Camperdown 2050, Australia
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Camperdown 2050, Australia
- Sarcoma and Surgical Research Centre, Chris O’Brien Lifehouse, Camperdown 2050, Australia
- ARC Centre of Excellence for Electromaterials Science, The University of Wollongong, Wollongong 2522, Australia
- Intelligent Polymer Research Institute, AIIM Facility, The University of Wollongong, Wollongong 2522, Australia
- Illawarra Health and Medical Research Institute, The University of Wollongong, Wollongong 2522, Australia
| | - Gordon George Wallace
- ARC Centre of Excellence for Electromaterials Science, The University of Wollongong, Wollongong 2522, Australia
- Intelligent Polymer Research Institute, AIIM Facility, The University of Wollongong, Wollongong 2522, Australia
| | - Travis Jacob Klein
- Centre for Biomedical Technologies, Queensland University of Technology, Kelvin Grove 4059, Australia
| | - Jonathan Robert Clark
- Integrated Prosthetics and Reconstruction, Department of Head and Neck Surgery, Chris O’Brien Lifehouse, Camperdown 2050, Australia
- Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Camperdown 2050, Australia
- Royal Prince Alfred Institute of Academic Surgery, Sydney Local, Camperdown 2050, Australia
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4
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Wodzanowski KA, Caplan JL, Kloxin AM, Grimes CL. Multiscale Invasion Assay for Probing Macrophage Response to Gram-Negative Bacteria. Front Chem 2022; 10:842602. [PMID: 35242744 PMCID: PMC8886205 DOI: 10.3389/fchem.2022.842602] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 01/27/2022] [Indexed: 01/21/2023] Open
Abstract
The immune system is a complex network of various cellular components that must differentiate between pathogenic bacteria and the commensal bacteria of the human microbiome, where misrecognition is linked to inflammatory disorders. Fragments of bacterial cell wall peptidoglycan bind to pattern recognition receptors within macrophages, leading to immune activation. To study this complex process, a methodology to remodel and label the bacterial cell wall of two different species of bacteria was established using copper (I) catalyzed azide-alkyne cycloaddition (CuAAC) and strain-promoted azide-alkyne cycloaddition (SPAAC). Additionally, an approach for three-dimensional (3D) culture of human macrophages and their invasion with relevant bacteria in a well-defined hydrogel-based synthetic matrix inspired by the microenvironment of the gut was established. Workflows were developed for human monocyte encapsulation and differentiation into macrophages in 3D culture with high viability. Bacteria invaded into macrophages permitted in situ peptidoglycan labeling. Macrophages exhibited biologically-relevant cytokine release in response to bacteria. This molecularly engineered, multi-dimensional bacteria-macrophage co-culture system will prove useful in future studies to observe immunostimulatory, bacterial fragment production and localization in the cell at the carbohydrate level for insights into how the immune system properly senses bacteria.
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Affiliation(s)
| | - Jeffrey L. Caplan
- Department of Biological Sciences, University of Delaware, Newark, DE, United States
- Bioimaging Center, Delaware Biotechnology Institute, Newark, DE, United States
| | - April M. Kloxin
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, United States
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, United States
| | - Catherine L. Grimes
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, United States
- Department of Biological Sciences, University of Delaware, Newark, DE, United States
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5
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Araújo M, Silveira J, Sousa A, Bessa-Gonçalves M, Santos SG, Barrias CC. A bioinspired multifunctional hydrogel patch targeting inflammation and regeneration in chronic intestinal wounds. Biomater Sci 2021; 9:6510-6527. [PMID: 34582531 DOI: 10.1039/d1bm00118c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Healing of intestinal chronic wounds remains a major challenge as current therapies are ineffective in promoting proper regeneration of the damaged intestinal wall. An innovative concept, based on a bioinspired multifunctional alginate-melanin hybrid 3D scaffold, to target both inflammatory and regenerative processes, is proposed herein. Hydrogel-entrapped melanin nanoparticles demonstrated free-radical scavenging activity, supported by the neutralization of free-radicals in solution (90%), and the in vitro capture of reactive oxygen species (ROS) produced by stimulated macrophages in an inflammatory-mimicking environment. Notably, scaffolds could be reused (at least 3 times), while maintaining these properties. The extracellular matrix (ECM)-inspired biomaterial, containing protease-sensitive and integrin-binding domains, exhibited remarkable ability for cell colonisation. Human intestinal fibroblasts and epithelial cells (Caco-2) co-seeded on lyophilized scaffolds were able to invade/colonize the construct and produce endogenous ECM, key for neo-tissue formation and re-epithelialization. Scaffolds presented tuneable mechanical properties and could be used both in hydrated and freeze-dried states, maintaining their performance upon rehydration, which are attractive features for clinical application. Collectively, our results highlight the potential of biofunctionalized alginate-melanin hybrid 3D scaffolds as multi-therapeutic patches for modulating inflammation and tissue regeneration in chronic intestinal wounds, which address a major but still unmet clinical need. The proposed multi-therapeutic strategy may potentially be extended to the treatment of other chronic wounds.
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Affiliation(s)
- Marco Araújo
- I3S - Instituto de Investigação e Inovação em Saúde, University of Porto, 4200-135, Portugal. .,INEB - Instituto Nacional de Engenharia Biomédica, University of Porto, 4200-135, Portugal
| | - João Silveira
- I3S - Instituto de Investigação e Inovação em Saúde, University of Porto, 4200-135, Portugal. .,INEB - Instituto Nacional de Engenharia Biomédica, University of Porto, 4200-135, Portugal.,FEUP - Faculdade de Engenharia da Universidade do Porto, University of Porto, 4200-135, Portugal
| | - Aureliana Sousa
- I3S - Instituto de Investigação e Inovação em Saúde, University of Porto, 4200-135, Portugal. .,INEB - Instituto Nacional de Engenharia Biomédica, University of Porto, 4200-135, Portugal
| | - Mafalda Bessa-Gonçalves
- I3S - Instituto de Investigação e Inovação em Saúde, University of Porto, 4200-135, Portugal. .,INEB - Instituto Nacional de Engenharia Biomédica, University of Porto, 4200-135, Portugal.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, University of Porto, 4050-313, Portugal
| | - Susana G Santos
- I3S - Instituto de Investigação e Inovação em Saúde, University of Porto, 4200-135, Portugal. .,INEB - Instituto Nacional de Engenharia Biomédica, University of Porto, 4200-135, Portugal.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, University of Porto, 4050-313, Portugal
| | - Cristina C Barrias
- I3S - Instituto de Investigação e Inovação em Saúde, University of Porto, 4200-135, Portugal. .,INEB - Instituto Nacional de Engenharia Biomédica, University of Porto, 4200-135, Portugal.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, University of Porto, 4050-313, Portugal
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6
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Crosby CO, Hillsley A, Kumar S, Stern B, Parekh SH, Rosales A, Zoldan J. Phototunable interpenetrating polymer network hydrogels to stimulate the vasculogenesis of stem cell-derived endothelial progenitors. Acta Biomater 2021; 122:133-144. [PMID: 33359297 PMCID: PMC7983093 DOI: 10.1016/j.actbio.2020.12.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 02/08/2023]
Abstract
Vascularization of engineered scaffolds remains a critical obstacle hindering the translation of tissue engineering from the bench to the clinic. We previously demonstrated the robust micro-vascularization of collagen hydrogels with induced pluripotent stem cell (iPSC)-derived endothelial progenitors; however, physically cross-linked collagen hydrogels compact rapidly and exhibit limited strength. We have synthesized an interpenetrating polymer network (IPN) hydrogel comprised of collagen and norbornene-modified hyaluronic acid (NorHA) to address these challenges. This dual-network hydrogel combines the natural cues presented by collagen's binding sites and extracellular matrix (ECM)-mimicking fibrous architecture with the in situ modularity and chemical cross-linking of NorHA. We modulated the IPN hydrogel's stiffness and degradability by varying the concentration and sequence, respectively, of the NorHA peptide cross-linker. Rheological characterization of the photo-mediated gelation process revealed that the IPN hydrogel's stiffness increased with cross-linker concentration and was decoupled from the bulk NorHA content. Conversely, the swelling of the IPN hydrogel decreased linearly with increasing cross-linker concentration. Collagen microarchitecture remained relatively unchanged across cross-linking conditions, although the addition of NorHA delayed collagen fibrillogenesis. Upon iPSC-derived endothelial progenitor encapsulation, robust, lumenized microvascular networks developed in IPN hydrogels over two weeks. Subsequent computational analysis showed that an initial rise in stiffness increased the number of branch points and vessels, but vascular growth was suppressed in high stiffness IPN hydrogels. These results suggest that an IPN hydrogel consisting of collagen and NorHA is highly tunable, compaction resistant, and capable of supporting vasculogenesis.
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Affiliation(s)
- Cody O Crosby
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton Street, Austin, TX 78712, United States; Department of Physics, Southwestern University, Georgetown, TX, 78626, United States
| | - Alex Hillsley
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, 78712, United States
| | - Sachin Kumar
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton Street, Austin, TX 78712, United States
| | - Brett Stern
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton Street, Austin, TX 78712, United States
| | - Sapun H Parekh
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton Street, Austin, TX 78712, United States
| | - Adrianne Rosales
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, 78712, United States
| | - Janet Zoldan
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton Street, Austin, TX 78712, United States.
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7
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Abstract
The specific microenvironment that cells reside in fundamentally impacts their broader function in tissues and organs. At its core, this microenvironment is composed of precise arrangements of cells that encourage homotypic and heterotypic cell-cell interactions, biochemical signaling through soluble factors like cytokines, hormones, and autocrine, endocrine, or paracrine secretions, and the local extracellular matrix (ECM) that provides physical support and mechanobiological stimuli, and further regulates biochemical signaling through cell-ECM interactions like adhesions and growth factor sequestering. Each cue provided in the microenvironment dictates cellular behavior and, thus, overall potential to perform tissue and organ specific function. It follows that in order to recapitulate physiological cell responses and develop constructs capable of replacing damaged tissue, we must engineer the cellular microenvironment very carefully. Many great strides have been made toward this goal using various three-dimensional (3D) tissue culture scaffolds and specific media conditions. Among the various 3D biomimetic scaffolds, synthetic hydrogels have emerged as a highly tunable and tissue-like biomaterial well-suited for implantable tissue-engineered constructs. Because many synthetic hydrogel materials are inherently bioinert, they minimize unintentional cell responses and thus are good candidates for long-term implantable grafts, patches, and organs. This review will provide an overview of commonly used biomaterials for forming synthetic hydrogels for tissue engineering applications and techniques for modifying them to with bioactive properties to elicit the desired cell responses.
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Affiliation(s)
- Asli Z Unal
- Department of Biomedical Engineering, Duke University, 101 Science Drive, Campus Box 90281, Durham, North Carolina 27708, United States
| | - Jennifer L West
- Department of Biomedical Engineering, Duke University, 101 Science Drive, Campus Box 90281, Durham, North Carolina 27708, United States
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8
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Zhu H, Yang H, Ma Y, Lu TJ, Xu F, Genin GM, Lin M. Spatiotemporally Controlled Photoresponsive Hydrogels: Design and Predictive Modeling from Processing through Application. ADVANCED FUNCTIONAL MATERIALS 2020; 30:2000639. [PMID: 32802013 PMCID: PMC7418561 DOI: 10.1002/adfm.202000639] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/16/2020] [Indexed: 05/16/2023]
Abstract
Photoresponsive hydrogels (PRHs) are soft materials whose mechanical and chemical properties can be tuned spatially and temporally with relative ease. Both photo-crosslinkable and photodegradable hydrogels find utility in a range of biomedical applications that require tissue-like properties or programmable responses. Progress in engineering with PRHs is facilitated by the development of theoretical tools that enable optimization of their photochemistry, polymer matrices, nanofillers, and architecture. This review brings together models and design principles that enable key applications of PRHs in tissue engineering, drug delivery, and soft robotics, and highlights ongoing challenges in both modeling and application.
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Affiliation(s)
- Hongyuan Zhu
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Haiqian Yang
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Yufei Ma
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Tian Jian Lu
- State Key Laboratory of Mechanics and Control of Mechanical StructuresNanjing University of Aeronautics and AstronauticsNanjing210016P. R. China
- MOE Key Laboratory for Multifunctional Materials and StructuresXi'an Jiaotong UniversityXi'an710049P. R. China
| | - Feng Xu
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
| | - Guy M. Genin
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
- Department of Mechanical Engineering & Materials ScienceWashington University in St. LouisSt. LouisMO63130USA
- NSF Science and Technology Center for Engineering MechanobiologyWashington University in St. LouisSt. LouisMO63130USA
| | - Min Lin
- The Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an710049P. R. China
- Bioinspired Engineering & Biomechanics Center (BEBC)Xi'an Jiaotong UniversityXi'an710049P. R. China
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9
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Zhao H, Xu K, Zhu P, Wang C, Chi Q. Smart hydrogels with high tunability of stiffness as a biomimetic cell carrier. Cell Biol Int 2019; 43:84-97. [DOI: 10.1002/cbin.11091] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 12/23/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Han Zhao
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences; University of Science and Technology of China; Hefei China
| | - Kang Xu
- Department of Cardiovascular Surgery; Union Hospital; Tongji Medical College, Huazhong University of Science and Technology; Wuhan China
| | - Peng Zhu
- Department of Cardiovascular Surgery; Union Hospital; Tongji Medical College, Huazhong University of Science and Technology; Wuhan China
| | - Chunli Wang
- “111 ” Project Laboratory of Biomechanics and Tissue Repair; Bioengineering College; Chongqing University; Chongqing China
| | - Qingjia Chi
- Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics; Department of Mechanics and Engineering Structure; Wuhan University of Technology; Wuhan China
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10
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Macdougall LJ, Wiley KL, Kloxin AM, Dove AP. Design of synthetic extracellular matrices for probing breast cancer cell growth using robust cyctocompatible nucleophilic thiol-yne addition chemistry. Biomaterials 2018; 178:435-447. [PMID: 29773227 PMCID: PMC6699181 DOI: 10.1016/j.biomaterials.2018.04.046] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/27/2018] [Accepted: 04/23/2018] [Indexed: 12/16/2022]
Abstract
Controlled, three-dimensional (3D) cell culture systems are of growing interest for both tissue regeneration and disease, including cancer, enabling hypothesis testing about the effects of microenvironment cues on a variety of cellular processes, including aspects of disease progression. In this work, we encapsulate and culture in three dimensions different cancer cell lines in a synthetic extracellular matrix (ECM), using mild and efficient chemistry. Specifically, harnessing the nucleophilic addition of thiols to activated alkynes, we have created hydrogel-based materials with multifunctional poly(ethylene glycol) (PEG) and select biomimetic peptides. These materials have definable, controlled mechanical properties (G' = 4-10 kPa) and enable facile incorporation of pendant peptides for cell adhesion, relevant for mimicking soft tissues, where polymer architecture allows tuning of matrix degradation. These matrices rapidly formed in the presence of sensitive breast cancer cells (MCF-7) for successful encapsulation with high cell viability, greatly improved relative to that observed with the more widely used radically-initiated thiol-ene crosslinking chemistry. Furthermore, controlled matrix degradation by both bulk and local mechanisms, ester hydrolysis of the polymer network and cell-driven enzymatic hydrolysis of cell-degradable peptide, allowed cell proliferation and the formation of cell clusters within these thiol-yne hydrogels. These studies demonstrate the importance of chemistry in ECM mimics and the potential thiol-yne chemistry has as a crosslinking reaction for the encapsulation and culture of cells, including those sensitive to radical crosslinking pathways.
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Affiliation(s)
- Laura J Macdougall
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
| | - Katherine L Wiley
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA
| | - April M Kloxin
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA; Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | - Andrew P Dove
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
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11
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LeValley PJ, Noren B, Kharkar PM, Kloxin AM, Gatlin JC, Oakey JS. Fabrication of Functional Biomaterial Microstructures by in Situ Photopolymerization and Photodegradation. ACS Biomater Sci Eng 2018; 4:3078-3087. [PMID: 31984222 DOI: 10.1021/acsbiomaterials.8b00350] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The in situ fabrication of poly(ethylene glycol) diacrylate (PEGDA) hydrogel microstructures within poly(dimethylsiloxane) (PDMS)-based microfluidic networks is a versatile technique that has enabled unique applications in biosensing, medical diagnostics, and the fundamental life sciences. Hydrogel structures have previously been patterned by the lithographic photopolymerization of PEGDA hydrogel forming solutions, a process that is confounded by oxygen-permeable PDMS. Here, we introduce an alternate PEG patterning technique that relies upon the optical sculpting of features by patterned light-induced erosion of photodegradable PEGDA deemed negative projection lithography. We quantitatively compared the hydrogel micropatterning fidelity of negative projection lithography to positive projection lithography, using traditional PEGDA photopolymerization, within PDMS devices. We found that the channel depth, the local oxygen atmosphere, and the UV exposure time dictated the size and resolution of hydrogel features formed using positive projection lithography. In contrast, negative projection lithography was observed to deliver high-resolution functional features with dimensions on the order of single micrometers enabled by its facilely controlled mechanism of feature formation that is insensitive to oxygen. Next, the utility of photodegradable PEGDA was further assessed by encapsulating or conjugating bioactive molecules within photodegradable PEG matrixes to provide a route to the formation of complex and dynamically reconfigurable chemical microenvironments. Finally, we demonstrated that negative projection lithography enabled photopatterning of multilayered microscale objects without the need for precise mask alignment. The described approach for photopatterning high-resolution photolabile hydrogel microstructures directly within PDMS microchannels could enable novel microsystems of increasing complexity and sophistication for a variety of clinical and biological applications.
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Affiliation(s)
- Paige J LeValley
- Department of Chemical Engineering, University of Wyoming, Laramie, Wyoming 82071, United States
| | - Ben Noren
- Department of Chemical Engineering, University of Wyoming, Laramie, Wyoming 82071, United States
| | - Prathamesh M Kharkar
- Department of Biomolecular and Chemical Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - April M Kloxin
- Department of Biomolecular and Chemical Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Jesse C Gatlin
- Department of Molecular Biology, University of Wyoming, Laramie, Wyoming 82071, United States
| | - John S Oakey
- Department of Chemical Engineering, University of Wyoming, Laramie, Wyoming 82071, United States
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12
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Guo C, Kim H, Ovadia EM, Mourafetis CM, Yang M, Chen W, Kloxin AM. Bio-orthogonal conjugation and enzymatically triggered release of proteins within multi-layered hydrogels. Acta Biomater 2017; 56:80-90. [PMID: 28391052 PMCID: PMC5510749 DOI: 10.1016/j.actbio.2017.04.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 03/31/2017] [Accepted: 04/03/2017] [Indexed: 02/02/2023]
Abstract
Hydrogels are facile architectures for the controlled presentation of proteins with far-reaching applications, from fundamental biological studies in three-dimensional culture to new regenerative medicine and therapeutic delivery strategies. Here, we demonstrate a versatile approach for spatially-defined presentation of engineered proteins within hydrogels through i) immobilization using bio-orthogonal strain-promoted alkyne-azide click chemistry and ii) dynamic protease-driven protein release using exogenously applied enzyme. Model fluorescent proteins were expressed using nonsense codon replacement to incorporate azide-containing unnatural amino acids in a site-specific manner toward maintaining protein activity: here, cyan fluorescent protein (AzCFP), mCherry fluorescent protein (AzmCh), and mCh decorated with a thrombin cut-site. (AzTMBmCh). Eight-arm poly(ethylene glycol) (PEG) was modified with dibenzylcyclooctyne (DBCO) groups and reacted with azide functionalized PEG in aqueous solution for rapid formation of hydrogels. Azide functionalized full-length fluorescent proteins were successfully incorporated into the hydrogel network by reaction with PEG-DBCO prior to gel formation. Temporal release and removal of select proteins (AzTMBmCh) was triggered with the application of thrombin and monitored in real-time with confocal microscopy, providing a responsive handle for controlling matrix properties. Hydrogels with regions of different protein compositions were created using a layering technique with thicknesses of hundreds of micrometers, affording opportunities for the creation of complex geometries on size scales relevant for controlling cellular microenvironments. STATEMENT OF SIGNIFICANCE Controlling protein presentation within biomaterials is important for modulating interactions with biological systems. For example, native tissues are composed of subunits with different matrix compositions (proteins, stiffness) that dynamically interact with cells, influencing function and fate. Toward mimicking such temporally-regulated and spatially-defined microenvironments, we utilize bio-orthogonal click chemistry and protein engineering to create hydrogels with distinct regions of proteins and modify them over time. Through nonsense codon replacement, we site-specifically functionalize large proteins with i) azides for covalent conjugation and ii) an enzymatic cleavage site for user-defined release from hydrogels. Our results exemplify not only the ability to create unique bio-functionalized hydrogels with controlled mechanical properties, but also the potential for creating interesting interfaces for cell culture and tissue engineering applications.
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Affiliation(s)
- Chen Guo
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, United States
| | - Heejae Kim
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, United States
| | - Elisa M Ovadia
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, United States
| | - Christine M Mourafetis
- Department of Chemical and Biomolecular Engineering, New York University, Brooklyn, NY 11201, United States
| | - Mingrui Yang
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, United States
| | - Wilfred Chen
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, United States
| | - April M Kloxin
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, United States; Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, United States.
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13
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Guan X, Avci-Adali M, Alarçin E, Cheng H, Kashaf SS, Li Y, Chawla A, Jang HL, Khademhosseini A. Development of hydrogels for regenerative engineering. Biotechnol J 2017; 12:10.1002/biot.201600394. [PMID: 28220995 PMCID: PMC5503693 DOI: 10.1002/biot.201600394] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/23/2017] [Accepted: 01/25/2017] [Indexed: 11/07/2022]
Abstract
The aim of regenerative engineering is to restore complex tissues and biological systems through convergence in the fields of advanced biomaterials, stem cell science, and developmental biology. Hydrogels are one of the most attractive biomaterials for regenerative engineering, since they can be engineered into tissue mimetic 3D scaffolds to support cell growth due to their similarity to native extracellular matrix. Advanced nano- and micro-technologies have dramatically increased the ability to control properties and functionalities of hydrogel materials by facilitating biomimetic fabrication of more sophisticated compositions and architectures, thus extending our understanding of cell-matrix interactions at the nanoscale. With this perspective, this review discusses the most commonly used hydrogel materials and their fabrication strategies for regenerative engineering. We highlight the physical, chemical, and functional modulation of hydrogels to design and engineer biomimetic tissues based on recent achievements in nano- and micro-technologies. In addition, current hydrogel-based regenerative engineering strategies for treating multiple tissues, such as musculoskeletal, nervous and cardiac tissue, are also covered in this review. The interaction of multiple disciplines including materials science, cell biology, and chemistry, will further play an important role in the design of functional hydrogels for the regeneration of complex tissues.
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Affiliation(s)
- Xiaofei Guan
- Division of Biomedical Engineering, Department of Medicine, Biomaterials Innovation Research Center, Harvard Medical School, Brigham & Women’s Hospital, Boston, MA 02139, USA
- Division of Health Sciences & Technology, Harvard-Massachusetts Institute of Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Orthopedic Department, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Meltem Avci-Adali
- Department of Thoracic and Cardiovascular Surgery, University Hospital Tuebingen, Calwerstr. 7/1, Tuebingen 72076, Germany
| | - Emine Alarçin
- Division of Biomedical Engineering, Department of Medicine, Biomaterials Innovation Research Center, Harvard Medical School, Brigham & Women’s Hospital, Boston, MA 02139, USA
- Division of Health Sciences & Technology, Harvard-Massachusetts Institute of Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Marmara University, Istanbul 34668, Turkey
| | - Hao Cheng
- Division of Biomedical Engineering, Department of Medicine, Biomaterials Innovation Research Center, Harvard Medical School, Brigham & Women’s Hospital, Boston, MA 02139, USA
- Division of Health Sciences & Technology, Harvard-Massachusetts Institute of Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Sara Saheb Kashaf
- Division of Biomedical Engineering, Department of Medicine, Biomaterials Innovation Research Center, Harvard Medical School, Brigham & Women’s Hospital, Boston, MA 02139, USA
- Division of Health Sciences & Technology, Harvard-Massachusetts Institute of Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Yuxiao Li
- Division of Biomedical Engineering, Department of Medicine, Biomaterials Innovation Research Center, Harvard Medical School, Brigham & Women’s Hospital, Boston, MA 02139, USA
- Division of Health Sciences & Technology, Harvard-Massachusetts Institute of Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Aditya Chawla
- Division of Biomedical Engineering, Department of Medicine, Biomaterials Innovation Research Center, Harvard Medical School, Brigham & Women’s Hospital, Boston, MA 02139, USA
- Division of Health Sciences & Technology, Harvard-Massachusetts Institute of Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Hae Lin Jang
- Division of Biomedical Engineering, Department of Medicine, Biomaterials Innovation Research Center, Harvard Medical School, Brigham & Women’s Hospital, Boston, MA 02139, USA
- Division of Health Sciences & Technology, Harvard-Massachusetts Institute of Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Ali Khademhosseini
- Division of Biomedical Engineering, Department of Medicine, Biomaterials Innovation Research Center, Harvard Medical School, Brigham & Women’s Hospital, Boston, MA 02139, USA
- Division of Health Sciences & Technology, Harvard-Massachusetts Institute of Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Bioindustrial Technologies, College of Animal Bioscience & Technology, Konkuk University, Seoul 143-701, Republic of Korea
- Department of Physics, King Abdulaziz University, Jeddah 21569, Saudi Arabia
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14
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Uto K, Tsui JH, DeForest CA, Kim DH. Dynamically Tunable Cell Culture Platforms for Tissue Engineering and Mechanobiology. Prog Polym Sci 2017; 65:53-82. [PMID: 28522885 PMCID: PMC5432044 DOI: 10.1016/j.progpolymsci.2016.09.004] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Human tissues are sophisticated ensembles of many distinct cell types embedded in the complex, but well-defined, structures of the extracellular matrix (ECM). Dynamic biochemical, physicochemical, and mechano-structural changes in the ECM define and regulate tissue-specific cell behaviors. To recapitulate this complex environment in vitro, dynamic polymer-based biomaterials have emerged as powerful tools to probe and direct active changes in cell function. The rapid evolution of polymerization chemistries, structural modulation, and processing technologies, as well as the incorporation of stimuli-responsiveness, now permit synthetic microenvironments to capture much of the dynamic complexity of native tissue. These platforms are comprised not only of natural polymers chemically and molecularly similar to ECM, but those fully synthetic in origin. Here, we review recent in vitro efforts to mimic the dynamic microenvironment comprising native tissue ECM from the viewpoint of material design. We also discuss how these dynamic polymer-based biomaterials are being used in fundamental cell mechanobiology studies, as well as towards efforts in tissue engineering and regenerative medicine.
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Affiliation(s)
- Koichiro Uto
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA 98195, United States
| | - Jonathan H. Tsui
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA 98195, United States
| | - Cole A. DeForest
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA 98195, United States
- Department of Chemical Engineering, University of Washington, 4000 15th Ave NE, Seattle, WA 98195, United States
| | - Deok-Ho Kim
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA 98195, United States
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15
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Ren K, Cui H, Xu Q, He C, Li G, Chen X. Injectable Polypeptide Hydrogels with Tunable Microenvironment for 3D Spreading and Chondrogenic Differentiation of Bone-Marrow-Derived Mesenchymal Stem Cells. Biomacromolecules 2016; 17:3862-3871. [DOI: 10.1021/acs.biomac.6b00884] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Kaixuan Ren
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Haitao Cui
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Qinghua Xu
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Chaoliang He
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Gao Li
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Xuesi Chen
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
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16
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Abstract
Click chemistries have been investigated for use in numerous biomaterials applications, including drug delivery, tissue engineering, and cell culture. In particular, light-mediated click reactions, such as photoinitiated thiol-ene and thiol-yne reactions, afford spatiotemporal control over material properties and allow the design of systems with a high degree of user-directed property control. Fabrication and modification of hydrogel-based biomaterials using the precision afforded by light and the versatility offered by these thiol-X photoclick chemistries are of growing interest, particularly for the culture of cells within well-defined, biomimetic microenvironments. Here, we describe methods for the photoencapsulation of cells and subsequent photopatterning of biochemical cues within hydrogel matrices using versatile and modular building blocks polymerized by a thiol-ene photoclick reaction. Specifically, an approach is presented for constructing hydrogels from allyloxycarbonyl (Alloc)-functionalized peptide crosslinks and pendant peptide moieties and thiol-functionalized poly(ethylene glycol) (PEG) that rapidly polymerize in the presence of lithium acylphosphinate photoinitiator and cytocompatible doses of long wavelength ultraviolet (UV) light. Facile techniques to visualize photopatterning and quantify the concentration of peptides added are described. Additionally, methods are established for encapsulating cells, specifically human mesenchymal stem cells, and determining their viability and activity. While the formation and initial patterning of thiol-alloc hydrogels are shown here, these techniques broadly may be applied to a number of other light and radical-initiated material systems (e.g., thiol-norbornene, thiol-acrylate) to generate patterned substrates.
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Affiliation(s)
- Lisa A Sawicki
- Department of Chemical and Biomolecular Engineering, University of Delaware
| | - April M Kloxin
- Department of Chemical and Biomolecular Engineering, University of Delaware; Department of Materials Science and Engineering, University of Delaware;
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17
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Markovic M, Van Hoorick J, Hölzl K, Tromayer M, Gruber P, Nürnberger S, Dubruel P, Van Vlierberghe S, Liska R, Ovsianikov A. Hybrid Tissue Engineering Scaffolds by Combination of Three-Dimensional Printing and Cell Photoencapsulation. J Nanotechnol Eng Med 2015; 6:0210011-210017. [PMID: 26858826 DOI: 10.1115/1.4031466] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 08/25/2015] [Indexed: 11/08/2022]
Abstract
Three-dimensional (3D) printing offers versatile possibilities for adapting the structural parameters of tissue engineering scaffolds. However, it is also essential to develop procedures allowing efficient cell seeding independent of scaffold geometry and pore size. The aim of this study was to establish a method for seeding the scaffolds using photopolymerizable cell-laden hydrogels. The latter facilitates convenient preparation, and handling of cell suspension, while distributing the hydrogel precursor throughout the pores, before it is cross-linked with light. In addition, encapsulation of living cells within hydrogels can produce constructs with high initial cell loading and intimate cell-matrix contact, similar to that of the natural extra-cellular matrix (ECM). Three dimensional scaffolds were produced from poly(lactic) acid (PLA) by means of fused deposition modeling. A solution of methacrylamide-modified gelatin (Gel-MOD) in cell culture medium containing photoinitiator Li-TPO-L was used as a hydrogel precursor. Being an enzymatically degradable derivative of natural collagen, gelatin-based matrices are biomimetic and potentially support the process of cell-induced remodeling. Preosteoblast cells MC3T3-E1 at a density of 10 × 106 cells per 1 mL were used for testing the seeding procedure and cell proliferation studies. Obtained results indicate that produced constructs support cell survival and proliferation over extended duration of our experiment. The established two-step approach for scaffold seeding with the cells is simple, rapid, and is shown to be highly reproducible. Furthermore, it enables precise control of the initial cell density, while yielding their uniform distribution throughout the scaffold. Such hybrid tissue engineering constructs merge the advantages of rigid 3D printed constructs with the soft hydrogel matrix, potentially mimicking the process of ECM remodeling.
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Affiliation(s)
- Marica Markovic
- Austrian Cluster for Tissue Regeneration, Institute of Materials Science and Technology, Technische Universität Wien (TU Wien), Getreidemarkt 9, Vienna 1060, Austria e-mail:
| | - Jasper Van Hoorick
- Polymer Chemistry and Biomaterials Research Group, Ghent University, Krijgslaan 281 S4-bis, Ghent 9000, Belgium; Brussels Photonics Team, Department of Applied Physics and Photonics, Vrije Universiteit Brussel, Pleinlaan 2, Elsene 1050, Belgium e-mail:
| | - Katja Hölzl
- Austrian Cluster for Tissue Regeneration, Institute of Materials Science and Technology, Technische Universität Wien (TU Wien), Getreidemarkt 9, Vienna 1060, Austria e-mail:
| | - Maximilian Tromayer
- Austrian Cluster for Tissue Regeneration, Institute of Applied Synthetic Chemistry, Technische Universität Wien (TU Wien), Getreidemarkt 9, Vienna 1060, Austria e-mail:
| | - Peter Gruber
- Austrian Cluster for Tissue Regeneration, Institute of Materials Science and Technology, Technische Universität Wien (TU Wien), Getreidemarkt 9, Vienna 1060, Austria e-mail:
| | - Sylvia Nürnberger
- Austrian Cluster for Tissue Regeneration, Medical University of Vienna, Department of Trauma Surgery, Währinger Gürtel 18-20, Vienna 1090, Austria e-mail:
| | - Peter Dubruel
- Polymer Chemistry and Biomaterials Research Group, Ghent University, Krijgslaan 281 S4-bis, Ghent 9000, Belgium e-mail:
| | - Sandra Van Vlierberghe
- Polymer Chemistry and Biomaterials Research Group, Ghent University, Krijgslaan 281 S4-bis, 9000 Ghent, Brussels, Photonics Team, Department of Applied Physics and Photonics, Vrije Universiteit Brussel, Pleinlaan 2, Elsene 1050, Belgium e-mail:
| | - Robert Liska
- Austrian Cluster for Tissue Regeneration, Institute of Applied Synthetic Chemistry Division of Macromolecular Chemistry, Technische Universität Wien (TU Wien), Getreidemarkt 9, Vienna 1060, Austria e-mail:
| | - Aleksandr Ovsianikov
- Austrian Cluster for Tissue Regeneration, Institute of Materials Science and Technology, Technische Universität Wien (TU Wien), Getreidemarkt 9, Vienna 1060, Austria e-mail:
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18
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Tsang KM, Annabi N, Ercole F, Zhou K, Karst D, Li F, Haynes JM, Evans RA, Thissen H, Khademhosseini A, Forsythe JS. Facile One-step Micropatterning Using Photodegradable Methacrylated Gelatin Hydrogels for Improved Cardiomyocyte Organization and Alignment. ADVANCED FUNCTIONAL MATERIALS 2015; 25:977-986. [PMID: 26327819 PMCID: PMC4551408 DOI: 10.1002/adfm.201403124] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Hydrogels are often employed as temporary platforms for cell proliferation and tissue organization in vitro. Researchers have incorporated photodegradable moieties into synthetic polymeric hydrogels as a means of achieving spatiotemporal control over material properties. In this study protein-based photodegradable hydrogels composed of methacrylated gelatin (GelMA) and a crosslinker containing o-nitrobenzyl ester groups have been developed. The hydrogels are able to degrade rapidly and specifically in response to UV light and can be photopatterned to a variety of shapes and dimensions in a one-step process. Micropatterned photodegradable hydrogels are shown to improve cell distribution, alignment and beating regularity of cultured neonatal rat cardiomyocytes. Overall this work introduces a new class of photodegradable hydrogel based on natural and biofunctional polymers as cell culture substrates for improving cellular organization and function.
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Affiliation(s)
- Kelly M.C. Tsang
- Department of Materials Engineering, Wellington Road, Monash University, Clayton, VIC 3800, Australia. CSIRO Manufacturing Flagship, Bayview Avenue, Clayton, VIC 3168, Australia. CRC for Polymers, 8 Redwood Drive, Notting Hill, VIC 3168, Australia
| | - Nasim Annabi
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 02139, MA, USA. Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, 02115, MA, USA
| | - Francesca Ercole
- Department of Materials Engineering, Wellington Road, Monash University, Clayton, VIC 3800, Australia
| | - Kun Zhou
- Department of Materials Engineering, Wellington Road, Monash University, Clayton, VIC 3800, Australia
| | - Daniel Karst
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 02139, MA, USA. Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA
| | - Fanyi Li
- Department of Materials Engineering, Wellington Road, Monash University, Clayton, VIC 3800, Australia
| | - John M. Haynes
- Faculty of Pharmacy and Pharmaceutical Sciences; Drug Discovery Biology, Department of Pharmaceutical Biology, Monash University, Parkville, VIC 3052, Australia
| | - Richard A. Evans
- CSIRO Manufacturing Flagship, Bayview Avenue, Clayton, VIC 3168, Australia. CRC for Polymers, 8 Redwood Drive, Notting Hill, VIC 3168, Australia
| | - Helmut Thissen
- CSIRO Manufacturing Flagship, Bayview Avenue, Clayton, VIC 3168, Australia. CRC for Polymers, 8 Redwood Drive, Notting Hill, VIC 3168, Australia
| | - Ali Khademhosseini
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 02139, MA, USA. Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, 02115, MA, USA. Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul 130-701, Republic of Korea. Department of Physics, King Abdulaziz University, Jeddah 21569, Saudi Arabia
| | - John S. Forsythe
- Department of Materials Engineering, Wellington Road, Monash University, Clayton, VIC 3800, Australia
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19
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Supramolecular Hydrogels for Regenerative Medicine. ADVANCES IN POLYMER SCIENCE 2015. [DOI: 10.1007/978-3-319-15404-6_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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20
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Sawicki LA, Kloxin AM. Design of thiol-ene photoclick hydrogels using facile techniques for cell culture applications†Electronic supplementary information (ESI) available. See DOI: 10.1039/c4bm00187gClick here for additional data file. Biomater Sci 2014; 2:1612-1626. [PMID: 25717375 PMCID: PMC4324132 DOI: 10.1039/c4bm00187g] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 08/14/2014] [Indexed: 01/25/2023]
Abstract
Thiol-ene 'click' chemistries have been widely used in biomaterials applications, including drug delivery, tissue engineering, and controlled cell culture, owing to their rapid, cytocompatible, and often orthogonal reactivity. In particular, hydrogel-based biomaterials formed by photoinitiated thiol-ene reactions afford spatiotemporal control over the biochemical and biomechanical properties of the network for creating synthetic materials that mimic the extracellular matrix or enable controlled drug release. However, the use of charged peptides functionalized with cysteines, which can form disulfides prior to reaction, and vinyl monomers that require multistep syntheses and contain ester bonds, may lead to undesired inhomogeneity or degradation under cell culture conditions. Here, we designed a thiol-ene hydrogel formed by the reaction of allyloxycarbonyl-functionalized peptides and thiol-functionalized poly(ethylene glycol). Hydrogels were polymerized by free radical initiation under cytocompatible doses of long wavelength ultraviolet light in the presence of water-soluble photoinitiators (lithium acylphosphinate, LAP, and 2-hydroxy-1-[4-(2-hydroxyethoxy)phenyl]-2-methyl-1-propanone, Irgacure 2959). Mechanical properties of these hydrogels were controlled by varying the monomer concentration to mimic a range of soft tissue environments, and hydrogel stability in cell culture medium was observed over weeks. Patterns of biochemical cues were created within the hydrogels post-formation and confirmed through the incorporation of fluorescently-labeled peptides and Ellman's assay to detect free thiols. Human mesenchymal stem cells remained viable after encapsulation and subsequent photopatterning, demonstrating the utility of the monomers and hydrogels for three-dimensional cell culture. This facile approach enables the formation and characterization of hydrogels with well-defined, spatially-specific properties and expands the suite of monomers available for three-dimensional cell culture and other biological applications.
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Affiliation(s)
- Lisa A Sawicki
- Department of Chemical and Biomolecular Engineering , University of Delaware , Newark , DE 19716 , USA .
| | - April M Kloxin
- Department of Chemical and Biomolecular Engineering , University of Delaware , Newark , DE 19716 , USA . ; Department of Materials Science and Engineering , University of Delaware , Newark , DE 19716 , USA
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21
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Zhou Y, Qi P, Zhao Z, Liu Q, Li Z. Fabrication and characterization of fibrous HAP/PVP/PEO composites prepared by sol-electrospinning. RSC Adv 2014. [DOI: 10.1039/c3ra47168c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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22
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Kharkar PM, Kiick KL, Kloxin AM. Designing degradable hydrogels for orthogonal control of cell microenvironments. Chem Soc Rev 2013; 42:7335-72. [PMID: 23609001 PMCID: PMC3762890 DOI: 10.1039/c3cs60040h] [Citation(s) in RCA: 471] [Impact Index Per Article: 42.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Indexed: 12/12/2022]
Abstract
Degradable and cell-compatible hydrogels can be designed to mimic the physical and biochemical characteristics of native extracellular matrices and provide tunability of degradation rates and related properties under physiological conditions. Hence, such hydrogels are finding widespread application in many bioengineering fields, including controlled bioactive molecule delivery, cell encapsulation for controlled three-dimensional culture, and tissue engineering. Cellular processes, such as adhesion, proliferation, spreading, migration, and differentiation, can be controlled within degradable, cell-compatible hydrogels with temporal tuning of biochemical or biophysical cues, such as growth factor presentation or hydrogel stiffness. However, thoughtful selection of hydrogel base materials, formation chemistries, and degradable moieties is necessary to achieve the appropriate level of property control and desired cellular response. In this review, hydrogel design considerations and materials for hydrogel preparation, ranging from natural polymers to synthetic polymers, are overviewed. Recent advances in chemical and physical methods to crosslink hydrogels are highlighted, as well as recent developments in controlling hydrogel degradation rates and modes of degradation. Special attention is given to spatial or temporal presentation of various biochemical and biophysical cues to modulate cell response in static (i.e., non-degradable) or dynamic (i.e., degradable) microenvironments. This review provides insight into the design of new cell-compatible, degradable hydrogels to understand and modulate cellular processes for various biomedical applications.
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Affiliation(s)
- Prathamesh M. Kharkar
- Department of Materials Science and Engineering , University of Delaware , Newark , DE 19716 , USA . ;
| | - Kristi L. Kiick
- Department of Materials Science and Engineering , University of Delaware , Newark , DE 19716 , USA . ;
- Biomedical Engineering , University of Delaware , Newark , DE 19716 , USA
- Delaware Biotechnology Institute , University of Delaware , Newark , DE 19716 , USA
| | - April M. Kloxin
- Department of Materials Science and Engineering , University of Delaware , Newark , DE 19716 , USA . ;
- Department of Chemical and Biomolecular Engineering , University of Delaware , Newark , DE 19716 , USA
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23
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Hotz N, Wilcke L, Weber W. Design, synthesis, and application of stimulus-sensing biohybrid hydrogels. Macromol Rapid Commun 2013; 34:1594-610. [PMID: 23982955 DOI: 10.1002/marc.201300468] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 07/22/2013] [Indexed: 12/18/2022]
Abstract
A key feature of any living system is the ability to sense and react to the environmental stimuli. The biochemical characterization of the underlying biological sensors combined with advances in polymer chemistry has enabled the development of stimulus-sensitive biohybrid materials that translate most diverse chemical and biological input into a precise change in material properties. In this review article, we first describe synthesis strategies of how biological and chemical polymers can functionally be interconnected. We then provide a comprehensive overview of how the different properties of biological sensor molecules such as competitive target binding and allosteric modulation can be harnessed to develop responsive materials with applications in tissue engineering and drug delivery.
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Affiliation(s)
- Natascha Hotz
- Faculty of Biology, BIOSS - Centre for Biological Signalling Studies, SGBM - Spemann Graduate School of Biology and Medicine, University of Freiburg, Schänzlestrasse 18, 79104, Freiburg, Germany; Faculty of Biology, University of Freiburg, Schänzlestrasse 18, 79104, Freiburg, Germany
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