1
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Calik F, Degirmenci A, Maouati H, Sanyal R, Sanyal A. Redox-Responsive "Catch and Release" Cryogels: A Versatile Platform for Capture and Release of Proteins and Cells. ACS Biomater Sci Eng 2024; 10:3017-3028. [PMID: 38655791 DOI: 10.1021/acsbiomaterials.4c00239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Macroporous cryogels are attractive scaffolds for biomedical applications, such as biomolecular immobilization, diagnostic sensing, and tissue engineering. In this study, thiol-reactive redox-responsive cryogels with a porous structure are prepared using photopolymerization of a pyridyl disulfide poly(ethylene glycol) methacrylate (PDS-PEG-MA) monomer. Reactive cryogels are produced using PDS-PEG-MA and hydrophilic poly(ethylene glycol) methyl ether methacrylate (PEGMEMA) monomers, along with a PEG-based cross-linker and photoinitiator. Functionalization of cryogels using a fluorescent dye via the disulfide-thiol exchange reactions is demonstrated, followed by release under reducing conditions. For ligand-mediated protein immobilization, first, thiol-containing biotin or mannose is conjugated onto the cryogels. Subsequently, fluorescent dye-labeled proteins streptavidin and concanavalin A (ConA) are immobilized via ligand-mediated conjugation. Furthermore, we demonstrate that the mannose-decorated cryogel could capture ConA selectively from a mixture of lectins. The efficiency of protein immobilization could be easily tuned by changing the ratio of the thiol-sensitive moiety in the scaffold. Finally, an integrin-binding cell adhesive peptide is attached to cryogels to achieve successful attachment, and the on-demand detachment of integrin-receptor-rich fibroblast cells is demonstrated. Redox-responsive cryogels can serve as potential scaffolds for a variety of biomedical applications because of their facile synthesis and modification.
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Affiliation(s)
- Filiz Calik
- Department of Chemistry, Bogazici University, Istanbul 34342, Türkiye
| | - Aysun Degirmenci
- Department of Chemistry, Bogazici University, Istanbul 34342, Türkiye
| | - Hamida Maouati
- Department of Chemistry, Bogazici University, Istanbul 34342, Türkiye
| | - Rana Sanyal
- Department of Chemistry, Bogazici University, Istanbul 34342, Türkiye
- Center for Life Sciences and Technologies, Bogazici University, Istanbul 34342, Türkiye
| | - Amitav Sanyal
- Department of Chemistry, Bogazici University, Istanbul 34342, Türkiye
- Center for Life Sciences and Technologies, Bogazici University, Istanbul 34342, Türkiye
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2
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Degirmenci A, Sanyal R, Sanyal A. Metal-Free Click-Chemistry: A Powerful Tool for Fabricating Hydrogels for Biomedical Applications. Bioconjug Chem 2024; 35:433-452. [PMID: 38516745 PMCID: PMC11036366 DOI: 10.1021/acs.bioconjchem.4c00003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/17/2024] [Accepted: 02/20/2024] [Indexed: 03/23/2024]
Abstract
Increasing interest in the utilization of hydrogels in various areas of biomedical sciences ranging from biosensing and drug delivery to tissue engineering has necessitated the synthesis of these materials using efficient and benign chemical transformations. In this regard, the advent of "click" chemistry revolutionized the design of hydrogels and a range of efficient reactions was utilized to obtain hydrogels with increased control over their physicochemical properties. The ability to apply the "click" chemistry paradigm to both synthetic and natural polymers as hydrogel precursors further expanded the utility of this chemistry in network formation. In particular, the ability to integrate clickable handles at predetermined locations in polymeric components enables the formation of well-defined networks. Although, in the early years of "click" chemistry, the copper-catalyzed azide-alkyne cycloaddition was widely employed, recent years have focused on the use of metal-free "click" transformations, since residual metal impurities may interfere with or compromise the biological function of such materials. Furthermore, many of the non-metal-catalyzed "click" transformations enable the fabrication of injectable hydrogels, as well as the fabrication of microstructured gels using spatial and temporal control. This review article summarizes the recent advances in the fabrication of hydrogels using various metal-free "click" reactions and highlights the applications of thus obtained materials. One could envision that the use of these versatile metal-free "click" reactions would continue to revolutionize the design of functional hydrogels geared to address unmet needs in biomedical sciences.
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Affiliation(s)
- Aysun Degirmenci
- Department
of Chemistry, Bogazici University, Bebek, Istanbul 34342, Türkiye
| | - Rana Sanyal
- Department
of Chemistry, Bogazici University, Bebek, Istanbul 34342, Türkiye
- Center
for Life Sciences and Technologies, Bogazici
University, Bebek, Istanbul 34342, Türkiye
| | - Amitav Sanyal
- Department
of Chemistry, Bogazici University, Bebek, Istanbul 34342, Türkiye
- Center
for Life Sciences and Technologies, Bogazici
University, Bebek, Istanbul 34342, Türkiye
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3
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Hameed H, Faheem S, Paiva-Santos AC, Sarwar HS, Jamshaid M. A Comprehensive Review of Hydrogel-Based Drug Delivery Systems: Classification, Properties, Recent Trends, and Applications. AAPS PharmSciTech 2024; 25:64. [PMID: 38514495 DOI: 10.1208/s12249-024-02786-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 03/05/2024] [Indexed: 03/23/2024] Open
Abstract
As adaptable biomaterials, hydrogels have shown great promise in several industries, which include the delivery of drugs, engineering of tissues, biosensing, and regenerative medicine. These hydrophilic polymer three-dimensional networks have special qualities like increased content of water, soft, flexible nature, as well as biocompatibility, which makes it excellent candidates for simulating the extracellular matrix and promoting cell development and tissue regeneration. With an emphasis on their design concepts, synthesis processes, and characterization procedures, this review paper offers a thorough overview of hydrogels. It covers the various hydrogel material types, such as natural polymers, synthetic polymers, and hybrid hydrogels, as well as their unique characteristics and uses. The improvements in hydrogel-based platforms for controlled drug delivery are examined. It also looks at recent advances in bioprinting methods that use hydrogels to create intricate tissue constructions with exquisite spatial control. The performance of hydrogels is explored through several variables, including mechanical properties, degradation behaviour, and biological interactions, with a focus on the significance of customizing hydrogel qualities for particular applications. This review paper also offers insights into future directions in hydrogel research, including those that promise to advance the discipline, such as stimuli-responsive hydrogels, self-healing hydrogels, and bioactive hydrogels. Generally, the objective of this review paper is to provide readers with a detailed grasp of hydrogels and all of their potential uses, making it an invaluable tool for scientists and researchers studying biomaterials and tissue engineering.
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Affiliation(s)
- Huma Hameed
- Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, 54000, Pakistan.
| | - Saleha Faheem
- Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, 54000, Pakistan
| | - Ana Cláudia Paiva-Santos
- Department of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, 3000-548, Coimbra, Portugal
- REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, 3000-548, Coimbra, Portugal
| | - Hafiz Shoaib Sarwar
- Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, 54000, Pakistan
| | - Muhammad Jamshaid
- Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, 54000, Pakistan
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4
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Koo MB, Lee JH, Kim GW, Jang H, Kim SY, Kim KT. Structural Homogeneity of Macromolecular Networks by End-to-End Click Chemistry between Discrete Tetrahedral Star Macromolecules. ACS Macro Lett 2024; 13:75-81. [PMID: 38170942 DOI: 10.1021/acsmacrolett.3c00619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Cross-linking via the end-to-end click chemistry of multiarm star polymers creates polymer networks with minimal inhomogeneities. Although it has been suggested that the mechanical and swelling properties of such networks depend on the absence of defects, the structural details of homogeneous networks created by this method have not yet been studied at the molecular level. Here, we report the synthesis of discrete tetrahedral star macromolecules (dTSMs) composed of polylactide (PLA) arms with discrete molecular weight and sequence. Polymer networks prepared by 4 × 4 cross-linking by Cu-free strain-promoted cyclooctyne-azide click chemistry (SPAAC) reaction exhibited a high degree of swelling (>40 fold by weight) in solvents without sacrificing mechanical robustness (elastic modulus >4 kPa). The structural details of the networks were investigated by network disassembly spectrometry (NDS) using MALDI-TOF mass spectrometry. By implementing a cleavable repeating unit in the discrete PLA arms of dTSM in a sequence-specific manner, the networks could be disassembled into fragments having discrete molecular weights precisely representing their connectivity in the network. This NDS analysis confirmed that end-to-end click reactions of dTSM networks resulted in the formation of a homogeneous network above the critical concentration (∼10 w/v%) of building blocks in the solution.
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Affiliation(s)
- Mo Beom Koo
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Jae Hak Lee
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Geon Woong Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Korea
| | - Heejeong Jang
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - So Youn Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Korea
| | - Kyoung Taek Kim
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
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5
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Kolipaka T, Pandey G, Abraham N, Srinivasarao DA, Raghuvanshi RS, Rajinikanth PS, Tickoo V, Srivastava S. Stimuli-responsive polysaccharide-based smart hydrogels for diabetic wound healing: Design aspects, preparation methods and regulatory perspectives. Carbohydr Polym 2024; 324:121537. [PMID: 37985111 DOI: 10.1016/j.carbpol.2023.121537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/27/2023] [Accepted: 10/28/2023] [Indexed: 11/22/2023]
Abstract
Diabetes adversely affects wound-healing responses, leading to the development of chronic infected wounds. Such wound microenvironment is characterized by hyperglycaemia, hyperinflammation, hypoxia, variable pH, upregulation of matrix metalloproteinases, oxidative stress, and bacterial colonization. These pathological conditions pose challenges for the effective wound healing. Therefore, there is a paradigm shift in diabetic wound care management wherein abnormal pathological conditions of the wound microenvironment is used as a trigger for controlling the drug release or to improve properties of wound dressings. Hydrogels composed of natural polysaccharides showed tremendous potential as wound dressings as well as stimuli-responsive materials due to their unique properties such as biocompatibility, biodegradability, hydrophilicity, porosity, stimuli-responsiveness etc. Hence, polysaccharide-based hydrogels have emerged as advanced healthcare materials for diabetic wounds. In this review, we presented important aspects for the design of hydrogel-based wound dressings with an emphasis on biocompatibility, biodegradability, entrapment of therapeutic agents, moisturizing ability, swelling, and mechanical properties. Further, various crosslinking methods that enable desirable properties and stimuli responsiveness to the hydrogels have been mentioned. Subsequently, state-of-the-art developments in mono- and multi- stimuli-responsive hydrogels have been presented along with the case studies. Finally regulatory perspectives, challenges for the clinical translation and future prospects have been discussed.
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Affiliation(s)
- Tejaswini Kolipaka
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Giriraj Pandey
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Noella Abraham
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Dadi A Srinivasarao
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Rajeev Singh Raghuvanshi
- Central Drugs Standard Control Organization (CDSCO), Directorate General of Health Services, Ministry of Health & Family Welfare, Government of India, India
| | - P S Rajinikanth
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, India
| | - Vidya Tickoo
- Department of Endocrinology, Yashoda Hospitals, Hyderabad, India
| | - Saurabh Srivastava
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India.
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6
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Yang W, Wang J, Jia L, Li J, Liu S. Stereo-Complex and Click-Chemical Bicrosslinked Amphiphilic Network Gels with Temperature/pH Response. Gels 2023; 9:647. [PMID: 37623102 PMCID: PMC10454454 DOI: 10.3390/gels9080647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/06/2023] [Accepted: 08/08/2023] [Indexed: 08/26/2023] Open
Abstract
Stimulus-responsive hydrogels have been widely used in the field of drug delivery because of their three-dimensional pore size and the ability to change the drug release rate with the change in external environment. In this paper, the temperature-sensitive monomer 2-methyl-2-acrylate-2-(2-methoxyethoxy-ethyl) ethyl ester (MEO2MA) and oligoethylene glycol methyl ether methacrylate (OEGMA) as well as the pH-sensitive monomer N,N-Diethylaminoethyl methacrylate (DEAEMA) were used to make the gel with temperature and pH response. Four kinds of physicochemical double-crosslinked amphiphilic co-network gels with different polymerization degrees were prepared by the one-pot method using the stereocomplex between polylactic acid as physical crosslinking and click chemistry as chemical crosslinking. By testing morphology, swelling, thermal stability and mechanical properties, the properties of the four hydrogels were compared. Finally, the drug release rate of the four gels was tested by UV-Vis spectrophotometer. It was found that the synthetic hydrogels had a good drug release rate and targeting, and had great application prospect in drug delivery.
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Affiliation(s)
| | | | | | | | - Shouxin Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China; (W.Y.); (J.W.); (L.J.); (J.L.)
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7
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Patel L, Worch JC, Dove AP, Gehmlich K. The Utilisation of Hydrogels for iPSC-Cardiomyocyte Research. Int J Mol Sci 2023; 24:9995. [PMID: 37373141 PMCID: PMC10298477 DOI: 10.3390/ijms24129995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/07/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
Cardiac fibroblasts' (FBs) and cardiomyocytes' (CMs) behaviour and morphology are influenced by their environment such as remodelling of the myocardium, thus highlighting the importance of biomaterial substrates in cell culture. Biomaterials have emerged as important tools for the development of physiological models, due to the range of adaptable properties of these materials, such as degradability and biocompatibility. Biomaterial hydrogels can act as alternative substrates for cellular studies, which have been particularly key to the progression of the cardiovascular field. This review will focus on the role of hydrogels in cardiac research, specifically the use of natural and synthetic biomaterials such as hyaluronic acid, polydimethylsiloxane and polyethylene glycol for culturing induced pluripotent stem cell-derived cardiomyocytes (iPSC-CMs). The ability to fine-tune mechanical properties such as stiffness and the versatility of biomaterials is assessed, alongside applications of hydrogels with iPSC-CMs. Natural hydrogels often display higher biocompatibility with iPSC-CMs but often degrade quicker, whereas synthetic hydrogels can be modified to facilitate cell attachment and decrease degradation rates. iPSC-CM structure and electrophysiology can be assessed on natural and synthetic hydrogels, often resolving issues such as immaturity of iPSC-CMs. Biomaterial hydrogels can thus provide a more physiological model of the cardiac extracellular matrix compared to traditional 2D models, with the cardiac field expansively utilising hydrogels to recapitulate disease conditions such as stiffness, encourage alignment of iPSC-CMs and facilitate further model development such as engineered heart tissues (EHTs).
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Affiliation(s)
- Leena Patel
- Institute of Cardiovascular Science, University of Birmingham, Birmingham B15 2TT, UK;
| | - Joshua C. Worch
- School of Chemistry, University of Birmingham, Birmingham B15 2TT, UK; (J.C.W.); (A.P.D.)
| | - Andrew P. Dove
- School of Chemistry, University of Birmingham, Birmingham B15 2TT, UK; (J.C.W.); (A.P.D.)
| | - Katja Gehmlich
- Institute of Cardiovascular Science, University of Birmingham, Birmingham B15 2TT, UK;
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8
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Roy A, Manna K, Dey S, Pal S. Chemical modification of β-cyclodextrin towards hydrogel formation. Carbohydr Polym 2023; 306:120576. [PMID: 36746567 DOI: 10.1016/j.carbpol.2023.120576] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 12/28/2022] [Accepted: 01/08/2023] [Indexed: 01/15/2023]
Abstract
β-CD is a cyclic oligosaccharide, which has trunked cone like structure. The unique structure makes it efficient for numerous applications. Though, the native β-CD has many issues like low solubility, absence of sufficient functionalities and lower complexation ability with guest molecules. One of the most effective paths to increase the efficiency of cyclodextrins is the generation of polycyclodextrins. In this perspective article, we have summarized the recent reports on the synthetic methods towards the modification of β-CD. Besides, this article reviews the current improvements of two types of β-CD centered supramolecular hydrogels: one is supramolecular hydrogels prepared from CD-based poly(pseudo)rotaxanes and the other is supramolecular hydrogels developed through the host-guest interaction between small guest molecules and CDs. The Polycyclodextrins have established noteworthy applications in several areas ranging from adsorbents for organic pollutants removal to effective carriers of bioactive agents.
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Affiliation(s)
- Arpita Roy
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, Jharkhand 826004, India.
| | - Kalipada Manna
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, Jharkhand 826004, India
| | - Shaon Dey
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, Jharkhand 826004, India
| | - Sagar Pal
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, Jharkhand 826004, India.
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9
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Bas Y, Sanyal R, Sanyal A. Hyaluronic-acid based redox-responsive hydrogels using the Diels-Alder reaction for on-demand release of biomacromolecules. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2023. [DOI: 10.1080/10601325.2023.2190357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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10
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Wu H, Zheng B. Hydrogel-Based Multi-enzymatic System for Biosynthesis. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2023; 186:51-76. [PMID: 37306702 DOI: 10.1007/10_2023_220] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Biosynthesis involving multi-enzymatic reactions is usually an efficient and economic method to produce plentiful important molecules. To increase the product yield in biosynthesis, the involved enzymes can be immobilized to carriers for enhancing enzyme stability, increasing synthesis efficiency and improving enzyme recyclability. Hydrogels with three-dimensional porous structures and versatile functional groups are promising carriers for enzyme immobilization. Herein, we review the recent advances of the hydrogel-based multi-enzymatic system for biosynthesis. First, we introduce the strategies of enzyme immobilization in hydrogel, including the pros and cons of the strategies. Then we overview the recent applications of the multi-enzymatic system for biosynthesis, including cell-free protein synthesis (CFPS) and non-protein synthesis, especially high value-added molecules. In the last section, we discuss the future perspective of the hydrogel-based multi-enzymatic system for biosynthesis.
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Affiliation(s)
- Han Wu
- Institute for Cell Analysis, Shenzhen Bay Laboratory, Shenzhen, Guangdong, China
| | - Bo Zheng
- Institute for Cell Analysis, Shenzhen Bay Laboratory, Shenzhen, Guangdong, China.
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11
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Acciaretti F, Vesentini S, Cipolla L. Fabrication Strategies Towards Hydrogels for Biomedical Application: Chemical and Mechanical Insights. Chem Asian J 2022; 17:e202200797. [PMID: 36112345 PMCID: PMC9828515 DOI: 10.1002/asia.202200797] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 09/16/2022] [Indexed: 01/12/2023]
Abstract
This review aims at giving selected chemical and mechanical insights on design criteria that should be taken into account in hydrogel production for biomedical applications. Particular emphasis will be given to the chemical aspects involved in hydrogel design: macromer chemical composition, cross-linking strategies and chemistry towards "conventional" and smart/stimuli responsive hydrogels. Mechanical properties of hydrogels in view of regenerative medicine applications will also be considered.
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Affiliation(s)
- Federico Acciaretti
- Department of Biotechnology and BiosciencesUniversity of Milano – BicoccaPiazza della Scienza 220126MilanoItaly
| | - Simone Vesentini
- Department of ElectronicsInformation and BioengineeringPolitecnico di Milano (Italy)Piazza Leonardo da Vinci 3220133MilanoItaly
| | - Laura Cipolla
- Department of Biotechnology and BiosciencesUniversity of Milano – BicoccaPiazza della Scienza 220126MilanoItaly
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12
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Clayton Da Silva A, Akbar TF, Paterson TE, Werner C, Tondera C, Minev IR. Electrically Controlled Click-Chemistry for Assembly of Bioactive Hydrogels on Diverse Micro- and Flexible Electrodes. Macromol Rapid Commun 2022; 43:e2200557. [PMID: 35882631 DOI: 10.1002/marc.202200557] [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: 06/30/2022] [Indexed: 11/09/2022]
Abstract
The seamless integration of electronics with living matter requires advanced materials with programmable biological and engineering properties. Here we explore electrochemical methods to assemble semi-synthetic hydrogels directly on electronically conductive surfaces. We polymerize hydrogels consisting of poly (ethylene glycol) (PEG) and heparin building blocks by spatially controlling the click reaction between their thiol and maleimide moieties. The gels are grown as conformal coatings or 2D patterns on ITO, gold, and PtIr. We demonstrate that such coatings significantly influence the electrochemical properties of the metal-electrolyte interface, likely due to space charge effects in the gels. We further highlight a promising route towards engineering and electrically addressable extracellular matrices by printing arrays of gels with binary cell adhesiveness on flexible conductive surfaces. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Aruã Clayton Da Silva
- Department of Automatic Control and Systems Engineering, Faculty of Engineering, University of Sheffield, Sheffield, UK.,Insigneo Institute for in silico Medicine, University of Sheffield, Sheffield, UK
| | | | - Thomas E Paterson
- Department of Automatic Control and Systems Engineering, Faculty of Engineering, University of Sheffield, Sheffield, UK
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden, Dresden, Germany
| | - Christoph Tondera
- Department of Automatic Control and Systems Engineering, Faculty of Engineering, University of Sheffield, Sheffield, UK.,Leibniz Institute of Polymer Research Dresden, Dresden, Germany
| | - Ivan R Minev
- Department of Automatic Control and Systems Engineering, Faculty of Engineering, University of Sheffield, Sheffield, UK.,Insigneo Institute for in silico Medicine, University of Sheffield, Sheffield, UK.,Leibniz Institute of Polymer Research Dresden, Dresden, Germany
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13
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Cansu Tarakci E, Nihal Gevrek T. Isocyanate group containing reactive hydrogels: Facile synthesis and efficient biofunctionalization. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Altinbasak I, Kocak S, Sanyal R, Sanyal A. Fast-Forming Dissolvable Redox-Responsive Hydrogels: Exploiting the Orthogonality of Thiol-Maleimide and Thiol-Disulfide Exchange Chemistry. Biomacromolecules 2022; 23:3525-3534. [PMID: 35696518 PMCID: PMC9472223 DOI: 10.1021/acs.biomac.2c00209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Fast-forming yet
easily dissolvable hydrogels (HGs) have potential
applications in wound healing, burn incidences, and delivery of therapeutic
agents. Herein, a combination of a thiol–maleimide conjugation
and thiol–disulfide exchange reaction is employed to fabricate
fast-forming HGs which rapidly dissolve upon exposure to dithiothreitol
(DTT), a nontoxic thiol-containing hydrophilic molecule. In particular,
maleimide disulfide-terminated telechelic linear poly(ethylene glycol)
(PEG) polymer and PEG-based tetrathiol macromonomers are employed
as gel precursors, which upon mixing yield HGs within a minute. The
selectivity of the thiol–maleimide conjugation in the presence
of a disulfide linkage was established through 1H NMR spectroscopy
and Ellman’s test. Rapid degradation of HGs in the presence
of thiol-containing solution was evident from the reduction in storage
modulus. HGs encapsulated with fluorescent dye-labeled dextran polymers
and bovine serum albumin were fabricated, and their cargo release
was investigated under passive and active conditions upon exposure
to DTT. One can envision that the rapid gelation and fast on-demand
dissolution under relatively benign conditions would make these polymeric
materials attractive for a range of biomedical applications.
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Affiliation(s)
- Ismail Altinbasak
- Department of Chemistry, Bogazici University, Bebek, Istanbul 34342, Turkey
| | - Salli Kocak
- Department of Chemistry, Bogazici University, Bebek, Istanbul 34342, Turkey
| | - Rana Sanyal
- Department of Chemistry, Bogazici University, Bebek, Istanbul 34342, Turkey.,Center for Life Sciences and Technologies, Bogazici University, Bebek, Istanbul 34342, Turkey
| | - Amitav Sanyal
- Department of Chemistry, Bogazici University, Bebek, Istanbul 34342, Turkey.,Center for Life Sciences and Technologies, Bogazici University, Bebek, Istanbul 34342, Turkey
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15
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Fellin CR, Nelson A. Direct-Ink Write 3D Printing Multistimuli-Responsive Hydrogels and Post-Functionalization Via Disulfide Exchange. ACS APPLIED POLYMER MATERIALS 2022; 4:3054-3061. [PMID: 38239328 PMCID: PMC10795753 DOI: 10.1021/acsapm.1c01538] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2024]
Abstract
Herein, we describe a multi-stimuli-responsive hydrogel that can be 3D printed via a direct-ink write process to afford cross-linked hydrogel networks that can be post-functionalized with thiol-bearing molecules. Poly(alkyl glycidyl ether)s with methacrylate groups at their termini were synthesized and self-assembled into hydrogels with three key stimuli-responsive behaviors necessary for extrusion based 3D printing: a sol-gel temperature response, shear-thinning behavior, and the ability to be photochemically crosslinked. In addition, the chemically crosslinked hydrogels demonstrated a temperature dependent swelling consistent with an LCST behavior. Pyridyl disulfide urethane methacrylate (PDS-UM) monomers were introduced into the network as a thiol-reactive handle for post-functionalization of the hydrogel. The reactivities of these hydrogels were investigated at different temperatures (5, 25, 37 °C) and swelling statuses (as-cured versus preswollen) using glutathione as a reactive probe. To illustrate the versatility of the platform, a number of additional thiol-containing probes such as proteins, polymers, and small molecules were conjugated to the hydrogel network at different temperatures, pH's, and concentrations. In a final demonstration of the multi-stimuli-responsive hydrogel platform, a customized DIW 3D printer was used to fabricate a printed object that was subsequently conjugated with a fluorescent tag and displayed the ability to change in size with environmental temperature.
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Affiliation(s)
| | - Alshakim Nelson
- Department of Chemistry, University of Washington, Seattle, Washington 98105, USA
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16
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Kilic Boz R, Aydin D, Kocak S, Golba B, Sanyal R, Sanyal A. Redox-Responsive Hydrogels for Tunable and "On-Demand" Release of Biomacromolecules. Bioconjug Chem 2022; 33:839-847. [PMID: 35446015 PMCID: PMC9121344 DOI: 10.1021/acs.bioconjchem.2c00094] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
![]()
In
recent years, stimuli-responsive degradation has emerged as
a desirable design criterion for functional hydrogels to tune the
release of encapsulated payload as well as ensure degradation of the
gel upon completion of its function. Herein, redox-responsive hydrogels
with a well-defined network structure were obtained using a highly
efficient thiol-disulfide exchange reaction. In particular, gelation
occurred upon combining thiol-terminated tetra-arm polyethylene glycol
(PEG) polymers with linear telechelic PEG-based polymers containing
pyridyl disulfide units at their chain ends. Rapid gelation proceeds
with good conversions (>85%) to yield macroporous hydrogels possessing
high water uptake. Furthermore, due to the presence of the disulfide
linkages, the thus-obtained hydrogels can self-heal. The obtained
hydrogels undergo complete degradation when exposed to environments
rich in thiol-containing agents such as dithiothreitol (DTT) and L-glutathione
(GSH). Also, the release profile of encapsulated protein, namely,
bovine serum albumin, can be tuned by varying the molecular weight
of the polymeric precursors. Additionally, it was demonstrated that
complete dissolution of the hydrogel to rapidly release the encapsulated
protein occurs upon treating these hydrogels with DTT. Cytotoxicity
evaluation of the hydrogels and their degradation products indicated
the benign nature of these hydrogels. Additionally, the cytocompatible
nature of these materials was also evident from a live/dead cell viability
assay. One can envision that the facile fabrication and their ability
to degrade on-demand and release their payload will make these benign
polymeric scaffolds attractive for various biomedical applications.
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Affiliation(s)
- Ruveyda Kilic Boz
- Department of Chemistry, Bogazici University, Istanbul 34342, Turkey
| | - Duygu Aydin
- Department of Chemistry, Bogazici University, Istanbul 34342, Turkey
| | - Salli Kocak
- Department of Chemistry, Bogazici University, Istanbul 34342, Turkey
| | - Bianka Golba
- Department of Chemistry, Bogazici University, Istanbul 34342, Turkey
| | - Rana Sanyal
- Department of Chemistry, Bogazici University, Istanbul 34342, Turkey.,Center for Life Sciences and Technologies, Bogazici University, Istanbul 34342, Turkey
| | - Amitav Sanyal
- Department of Chemistry, Bogazici University, Istanbul 34342, Turkey.,Center for Life Sciences and Technologies, Bogazici University, Istanbul 34342, Turkey
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17
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Mueller E, Poulin I, Bodnaryk WJ, Hoare T. Click Chemistry Hydrogels for Extrusion Bioprinting: Progress, Challenges, and Opportunities. Biomacromolecules 2022; 23:619-640. [PMID: 34989569 DOI: 10.1021/acs.biomac.1c01105] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The emergence of 3D bioprinting has allowed a variety of hydrogel-based "bioinks" to be printed in the presence of cells to create precisely defined cell-loaded 3D scaffolds in a single step for advancing tissue engineering and/or regenerative medicine. While existing bioinks based primarily on ionic cross-linking, photo-cross-linking, or thermogelation have significantly advanced the field, they offer technical limitations in terms of the mechanics, degradation rates, and the cell viabilities achievable with the printed scaffolds, particularly in terms of aiming to match the wide range of mechanics and cellular microenvironments. Click chemistry offers an appealing solution to this challenge given that proper selection of the chemistry can enable precise tuning of both the gelation rate and the degradation rate, both key to successful tissue regeneration; simultaneously, the often bio-orthogonal nature of click chemistry is beneficial to maintain high cell viabilities within the scaffolds. However, to date, relatively few examples of 3D-printed click chemistry hydrogels have been reported, mostly due to the technical challenges of controlling mixing during the printing process to generate high-fidelity prints without clogging the printer. This review aims to showcase existing cross-linking modalities, characterize the advantages and disadvantages of different click chemistries reported, highlight current examples of click chemistry hydrogel bioinks, and discuss the design of mixing strategies to enable effective 3D extrusion bioprinting of click hydrogels.
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Affiliation(s)
- Eva Mueller
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Isabelle Poulin
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - William James Bodnaryk
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Todd Hoare
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
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18
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Bicak T, Garnier M, Sabbah M, Griffete N. Photoinduced synthesis of fluorescent hydrogels without fluorescent monomers. Chem Commun (Camb) 2022; 58:9614-9617. [DOI: 10.1039/d2cc02888c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fluorescent monomer-free one-step strategy is developed for the synthesis of fluorescent acrylamide gels, using inexpensive and commercially available rhodamine B as the hydrogen donor in type II photoinitiation system....
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19
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Barbosa MAG, Xavier CPR, Pereira RF, Petrikaitė V, Vasconcelos MH. 3D Cell Culture Models as Recapitulators of the Tumor Microenvironment for the Screening of Anti-Cancer Drugs. Cancers (Basel) 2021; 14:190. [PMID: 35008353 PMCID: PMC8749977 DOI: 10.3390/cancers14010190] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 12/23/2021] [Accepted: 12/29/2021] [Indexed: 12/12/2022] Open
Abstract
Today, innovative three-dimensional (3D) cell culture models have been proposed as viable and biomimetic alternatives for initial drug screening, allowing the improvement of the efficiency of drug development. These models are gaining popularity, given their ability to reproduce key aspects of the tumor microenvironment, concerning the 3D tumor architecture as well as the interactions of tumor cells with the extracellular matrix and surrounding non-tumor cells. The development of accurate 3D models may become beneficial to decrease the use of laboratory animals in scientific research, in accordance with the European Union's regulation on the 3R rule (Replacement, Reduction, Refinement). This review focuses on the impact of 3D cell culture models on cancer research, discussing their advantages, limitations, and compatibility with high-throughput screenings and automated systems. An insight is also given on the adequacy of the available readouts for the interpretation of the data obtained from the 3D cell culture models. Importantly, we also emphasize the need for the incorporation of additional and complementary microenvironment elements on the design of 3D cell culture models, towards improved predictive value of drug efficacy.
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Affiliation(s)
- Mélanie A. G. Barbosa
- Cancer Drug Resistance Group, IPATIMUP—Institute of Molecular Pathology and Immunology, University of Porto, 4200-135 Porto, Portugal; (M.A.G.B.); (C.P.R.X.)
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal;
| | - Cristina P. R. Xavier
- Cancer Drug Resistance Group, IPATIMUP—Institute of Molecular Pathology and Immunology, University of Porto, 4200-135 Porto, Portugal; (M.A.G.B.); (C.P.R.X.)
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal;
| | - Rúben F. Pereira
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal;
- Biofabrication Group, INEB—Instituto de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
- ICBAS—Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
| | - Vilma Petrikaitė
- Laboratory of Drug Targets Histopathology, Institute of Cardiology, Lithuanian University of Health Sciences, A. Mickevičiaus g 9, LT-44307 Kaunas, Lithuania;
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Saulėtekio al. 7, LT-10257 Vilnius, Lithuania
| | - M. Helena Vasconcelos
- Cancer Drug Resistance Group, IPATIMUP—Institute of Molecular Pathology and Immunology, University of Porto, 4200-135 Porto, Portugal; (M.A.G.B.); (C.P.R.X.)
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal;
- Department of Biological Sciences, FFUP—Faculty of Pharmacy of the University of Porto, 4050-313 Porto, Portugal
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20
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Cho KW, Sunwoo SH, Hong YJ, Koo JH, Kim JH, Baik S, Hyeon T, Kim DH. Soft Bioelectronics Based on Nanomaterials. Chem Rev 2021; 122:5068-5143. [PMID: 34962131 DOI: 10.1021/acs.chemrev.1c00531] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Recent advances in nanostructured materials and unconventional device designs have transformed the bioelectronics from a rigid and bulky form into a soft and ultrathin form and brought enormous advantages to the bioelectronics. For example, mechanical deformability of the soft bioelectronics and thus its conformal contact onto soft curved organs such as brain, heart, and skin have allowed researchers to measure high-quality biosignals, deliver real-time feedback treatments, and lower long-term side-effects in vivo. Here, we review various materials, fabrication methods, and device strategies for flexible and stretchable electronics, especially focusing on soft biointegrated electronics using nanomaterials and their composites. First, we summarize top-down material processing and bottom-up synthesis methods of various nanomaterials. Next, we discuss state-of-the-art technologies for intrinsically stretchable nanocomposites composed of nanostructured materials incorporated in elastomers or hydrogels. We also briefly discuss unconventional device design strategies for soft bioelectronics. Then individual device components for soft bioelectronics, such as biosensing, data storage, display, therapeutic stimulation, and power supply devices, are introduced. Afterward, representative application examples of the soft bioelectronics are described. A brief summary with a discussion on remaining challenges concludes the review.
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Affiliation(s)
- Kyoung Won Cho
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Sung-Hyuk Sunwoo
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Yongseok Joseph Hong
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Ja Hoon Koo
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
| | - Jeong Hyun Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
| | - Seungmin Baik
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Dae-Hyeong Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea.,Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
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21
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Chen S, Wang W, Xu S, Fu C, Ji S, Luo F, Lin C, Qiu B, Lin Z. Single nanoparticle identification coupled with auto-identify algorithm for rapid and accurate detection of L-histidine. Anal Chim Acta 2021; 1187:339162. [PMID: 34753576 DOI: 10.1016/j.aca.2021.339162] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 10/03/2021] [Accepted: 10/09/2021] [Indexed: 11/20/2022]
Abstract
In this work, an auto-identify sensor was constructed for rapid and high-precision detection of L-histidine. The proposed strategy is based on the auto-identify algorithm and the aggregation of alkynyl and azide functionalized gold nanoparticles induced by the Cu+ catalyzed azides and alkynes cycloaddition (CuAAC) reaction. Specially, the color of scattering light spots for the aggregated gold nanoparticle (AuNPs) caused by CuAAC reaction was quite different from that of the monomers. However, L-histidine can bind to Cu2+ and inhibits the production of Cu+, hence preventing the aggregation of AuNPs. Therefore, there is a distinct change of color as the addition of L-histidine under dark-field microscopy. Then, L-histidine can be quantitatively detected by combining the color change with the Meanshift algorithm accurately and automatically. Such proposed method has been successfully applied for the detection of L-histidine in serum sample with satisfying result.
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Affiliation(s)
- Shuting Chen
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian, 350108, China; Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Weijia Wang
- Clinical Laboratory of Affiliate Zhongshan Hospital of Sun Yat-sen University, 510000, China
| | - Shaohua Xu
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Caili Fu
- National University of Singapore (Suzhou) Research Institute, 377 Lin Quan Street, Suzhou Industrial Park, Suzhou, 215123, China
| | - Shuyi Ji
- Fujian Key Lab for Intelligent Processing and Wireless Transmission of Media Information, College of Physics and Information Engineering, Fuzhou University, 350108, China
| | - Fang Luo
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian, 350108, China; Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, 350108, China.
| | - Cuiying Lin
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Bin Qiu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Zhenyu Lin
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, 350108, China.
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22
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Bone Regeneration Using MMP-Cleavable Peptides-Based Hydrogels. Gels 2021; 7:gels7040199. [PMID: 34842679 PMCID: PMC8628702 DOI: 10.3390/gels7040199] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 10/27/2021] [Accepted: 11/03/2021] [Indexed: 12/16/2022] Open
Abstract
Accumulating evidence has suggested the significant potential of chemically modified hydrogels in bone regeneration. Despite the progress of bioactive hydrogels with different materials, structures and loading cargoes, the desires from clinical applications have not been fully validated. Multiple biological behaviors are orchestrated precisely during the bone regeneration process, including bone marrow mesenchymal stem cells (BMSCs) recruitment, osteogenic differentiation, matrix calcification and well-organized remodeling. Since matrix metalloproteinases play critical roles in such bone metabolism processes as BMSC commitment, osteoblast survival, osteoclast activation matrix calcification and microstructure remodeling, matrix metalloproteinase (MMP) cleavable peptides-based hydrogels could respond to various MMP levels and, thus, accelerate bone regeneration. In this review, we focused on the MMP-cleavable peptides, polymers, functional modification and crosslinked reactions. Applications, perspectives and limitations of MMP-cleavable peptides-based hydrogels for bone regeneration were then discussed.
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23
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Zhang D, Liu J, Chen Q, Jiang W, Wang Y, Xie J, Ma K, Shi C, Zhang H, Chen M, Wan J, Ma P, Zou J, Zhang W, Zhou F, Liu R. A sandcastle worm-inspired strategy to functionalize wet hydrogels. Nat Commun 2021; 12:6331. [PMID: 34732724 PMCID: PMC8566497 DOI: 10.1038/s41467-021-26659-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 09/28/2021] [Indexed: 11/23/2022] Open
Abstract
Hydrogels have been extensively used in many fields. Current synthesis of functional hydrogels requires incorporation of functional molecules either before or during gelation via the pre-organized reactive site along the polymer chains within hydrogels, which is tedious for polymer synthesis and not flexible for different types of hydrogels. Inspired by sandcastle worm, we develop a simple one-step strategy to functionalize wet hydrogels using molecules bearing an adhesive dibutylamine-DOPA-lysine-DOPA tripeptide. This tripeptide can be easily modified with various functional groups to initiate diverse types of polymerizations and provide functional polymers with a terminal adhesive tripeptide. Such functional molecules enable direct modification of wet hydrogels to acquire biological functions such as antimicrobial, cell adhesion and wound repair. The strategy has a tunable functionalization degree and a stable attachment of functional molecules, which provides a tool for direct and convenient modification of wet hydrogels to provide them with diverse functions and applications.
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Affiliation(s)
- Donghui Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jingjing Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Qi Chen
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Weinan Jiang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yibing Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
- Biomedical Nanotechnology Center, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China
| | - Jiayang Xie
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Kaiqian Ma
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Chao Shi
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Haodong Zhang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Minzhang Chen
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jianglin Wan
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Pengcheng Ma
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jingcheng Zou
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Wenjing Zhang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Feng Zhou
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Runhui Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China.
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China.
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24
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Tasnim T, Adkins MD, Lim T, Feng H, Magda JJ, Shea JE, Agarwal J, Furse CM, Zhang H. Thermally tunable hydrogel crosslinking mediated by temperature sensitive liposome. Biomed Mater 2021; 16. [PMID: 34492645 DOI: 10.1088/1748-605x/ac246c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 09/07/2021] [Indexed: 11/12/2022]
Abstract
Hydrogel crosslinking by external stimuli is a versatile strategy to control and modulate hydrogel properties. Besides photonic energy, thermal energy is one of the most accessible external stimuli and widely applicable for many biomedical applications. However, conventional thermal crosslinking systems require a relatively high temperature (over 100 °C) to initiate covalent bond formation. To our knowledge, there has not been a thermally tunable hydrogel crosslinking system suitable for biological applications. This work demonstrates a unique approach to utilize temperature sensitive liposomes to control and modulate hydrogel crosslinking over mild temperature range (below 50 °C). Temperature sensitive liposomes were used to control the release of chemical crosslinkers by moderate temperature changes. The thermally controlled crosslinker release resulted in tunable mechanical and transport properties of the hydrogel. No significant inflammable response observed in the histology results ensured the biocompatibility of the liposome-mediated crosslinkable hydrogel. This work opens new opportunities to implement thermal energy system for control and modulate hydrogel properties.
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Affiliation(s)
- Tasmia Tasnim
- Department of Chemical Engineering, The University of Utah, Salt Lake City, UT, United States of America
| | - Michael D Adkins
- Department of Chemical Engineering, The University of Utah, Salt Lake City, UT, United States of America
| | - Taehwan Lim
- Department of Chemical Engineering, The University of Utah, Salt Lake City, UT, United States of America
| | - Haidong Feng
- Department of Chemical Engineering, The University of Utah, Salt Lake City, UT, United States of America
| | - Jules J Magda
- Department of Chemical Engineering, The University of Utah, Salt Lake City, UT, United States of America
| | - Jill E Shea
- Department of Surgery, The University of Utah, Salt Lake City, UT, United States of America
| | - Jayant Agarwal
- Department of Surgery, The University of Utah, Salt Lake City, UT, United States of America
| | - Cynthia M Furse
- Department of Electrical and Computer Engineering, The University of Utah, Salt Lake City, UT, United States of America
| | - Huanan Zhang
- Department of Chemical Engineering, The University of Utah, Salt Lake City, UT, United States of America
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25
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Abstract
Smart hydrogels are of great interest in areas such as drug delivery and sensing. Dendrimer-based hydrogels can exhibit tunable properties due to their structural precision. We prepared hydrogels from self-immolative dendrons. Controlled hydrogel degradation in response to light was demonstrated and the hydrogel properties as a function of dendron generation were compared.
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Affiliation(s)
- Karanpreet Gill
- Department of Chemistry and Centre for Advanced Materials and Biomaterials Research, The University of Western Ontario, London, N6A 5B7, Canada.
| | - Xueli Mei
- Department of Chemistry and Centre for Advanced Materials and Biomaterials Research, The University of Western Ontario, London, N6A 5B7, Canada.
| | - Elizabeth R Gillies
- Department of Chemistry and Centre for Advanced Materials and Biomaterials Research, The University of Western Ontario, London, N6A 5B7, Canada. .,Department of Chemical and Biochemical Engineering and School of Biomedical Engineering, The University of Western Ontario, London, N6A 5B7, Canada
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26
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Hui E, Sumey JL, Caliari SR. Click-functionalized hydrogel design for mechanobiology investigations. MOLECULAR SYSTEMS DESIGN & ENGINEERING 2021; 6:670-707. [PMID: 36338897 PMCID: PMC9631920 DOI: 10.1039/d1me00049g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The advancement of click-functionalized hydrogels in recent years has coincided with rapid growth in the fields of mechanobiology, tissue engineering, and regenerative medicine. Click chemistries represent a group of reactions that possess high reactivity and specificity, are cytocompatible, and generally proceed under physiologic conditions. Most notably, the high level of tunability afforded by these reactions enables the design of user-controlled and tissue-mimicking hydrogels in which the influence of important physical and biochemical cues on normal and aberrant cellular behaviors can be independently assessed. Several critical tissue properties, including stiffness, viscoelasticity, and biomolecule presentation, are known to regulate cell mechanobiology in the context of development, wound repair, and disease. However, many questions still remain about how the individual and combined effects of these instructive properties regulate the cellular and molecular mechanisms governing physiologic and pathologic processes. In this review, we discuss several click chemistries that have been adopted to design dynamic and instructive hydrogels for mechanobiology investigations. We also chart a path forward for how click hydrogels can help reveal important insights about complex tissue microenvironments.
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Affiliation(s)
- Erica Hui
- Department of Chemical Engineering, University of Virginia, 102 Engineer's Way, Charlottesville, Virginia 22904, USA
| | - Jenna L Sumey
- Department of Chemical Engineering, University of Virginia, 102 Engineer's Way, Charlottesville, Virginia 22904, USA
| | - Steven R Caliari
- Department of Chemical Engineering, University of Virginia, 102 Engineer's Way, Charlottesville, Virginia 22904, USA
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22904, USA
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Wang J, Zhang D, Chu F. Wood-Derived Functional Polymeric Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2001135. [PMID: 32578276 DOI: 10.1002/adma.202001135] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/26/2020] [Accepted: 03/26/2020] [Indexed: 05/12/2023]
Abstract
In recent years, tremendous efforts have been dedicated to developing wood-derived functional polymeric materials due to their distinctive properties, including environmental friendliness, renewability, and biodegradability. Thus, the uniqueness of the main components in wood (cellulose and lignin) has attracted enormous interest for both fundamental research and practical applications. Herein, the emerging field of wood-derived functional polymeric materials fabricated by means of macromolecular engineering is reviewed, covering the basic structures and properties of the main components, the design principle to utilize these main components, and the resulting wood-derived functional polymeric materials in terms of elastomers, hydrogels, aerogels, and nanoparticles. In detail, the natural features of wood components and their significant roles in the fabrication of materials are emphasized. Furthermore, the utilization of controlled/living polymerization, click chemistry, dynamic bonds chemistry, etc., for the modification is specifically discussed from the perspective of molecular design, together with their sequential assembly into different morphologies. The functionalities of wood-derived polymeric materials are mainly focused on self-healing and shape-memory abilities, adsorption, conduction, etc. Finally, the main challenges of wood-derived functional polymeric materials fabricated by macromolecular engineering are presented, as well as the potential solutions or directions to develop green and scalable wood-derived functional polymeric materials.
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Affiliation(s)
- Jifu Wang
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab for Biomass Chemical Utilization, Key and Open Lab of Forest Chemical Engineering, SFA, Key Lab of Biomass Energy and Material, Jiangsu Province, No 16, Suojin Wucun, Nanjing, 210042, China
- Institute of Forest New Technology, CAF, No 1, Dongxiaofu Haidian, Beijing, 100091, China
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, China
| | - Daihui Zhang
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab for Biomass Chemical Utilization, Key and Open Lab of Forest Chemical Engineering, SFA, Key Lab of Biomass Energy and Material, Jiangsu Province, No 16, Suojin Wucun, Nanjing, 210042, China
- Institute of Forest New Technology, CAF, No 1, Dongxiaofu Haidian, Beijing, 100091, China
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, China
| | - Fuxiang Chu
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab for Biomass Chemical Utilization, Key and Open Lab of Forest Chemical Engineering, SFA, Key Lab of Biomass Energy and Material, Jiangsu Province, No 16, Suojin Wucun, Nanjing, 210042, China
- Institute of Forest New Technology, CAF, No 1, Dongxiaofu Haidian, Beijing, 100091, China
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, China
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28
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Zhao X, Chen X, Yuk H, Lin S, Liu X, Parada G. Soft Materials by Design: Unconventional Polymer Networks Give Extreme Properties. Chem Rev 2021; 121:4309-4372. [PMID: 33844906 DOI: 10.1021/acs.chemrev.0c01088] [Citation(s) in RCA: 305] [Impact Index Per Article: 101.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Hydrogels are polymer networks infiltrated with water. Many biological hydrogels in animal bodies such as muscles, heart valves, cartilages, and tendons possess extreme mechanical properties including being extremely tough, strong, resilient, adhesive, and fatigue-resistant. These mechanical properties are also critical for hydrogels' diverse applications ranging from drug delivery, tissue engineering, medical implants, wound dressings, and contact lenses to sensors, actuators, electronic devices, optical devices, batteries, water harvesters, and soft robots. Whereas numerous hydrogels have been developed over the last few decades, a set of general principles that can rationally guide the design of hydrogels using different materials and fabrication methods for various applications remain a central need in the field of soft materials. This review is aimed at synergistically reporting: (i) general design principles for hydrogels to achieve extreme mechanical and physical properties, (ii) implementation strategies for the design principles using unconventional polymer networks, and (iii) future directions for the orthogonal design of hydrogels to achieve multiple combined mechanical, physical, chemical, and biological properties. Because these design principles and implementation strategies are based on generic polymer networks, they are also applicable to other soft materials including elastomers and organogels. Overall, the review will not only provide comprehensive and systematic guidelines on the rational design of soft materials, but also provoke interdisciplinary discussions on a fundamental question: why does nature select soft materials with unconventional polymer networks to constitute the major parts of animal bodies?
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Affiliation(s)
- Xuanhe Zhao
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.,Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Xiaoyu Chen
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hyunwoo Yuk
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Shaoting Lin
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Xinyue Liu
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - German Parada
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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29
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Li N, Guo R, Zhang ZJ. Bioink Formulations for Bone Tissue Regeneration. Front Bioeng Biotechnol 2021; 9:630488. [PMID: 33614614 PMCID: PMC7892967 DOI: 10.3389/fbioe.2021.630488] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 01/13/2021] [Indexed: 12/11/2022] Open
Abstract
Unlike the conventional techniques used to construct a tissue scaffolding, three-dimensional (3D) bioprinting technology enables fabrication of a porous structure with complex and diverse geometries, which facilitate evenly distributed cells and orderly release of signal factors. To date, a range of cell-laden materials, such as natural or synthetic polymers, have been deployed by the 3D bioprinting technique to construct the scaffolding systems and regenerate substitutes for the natural extracellular matrix (ECM). Four-dimensional (4D) bioprinting technology has attracted much attention lately because it aims to accommodate the dynamic structural and functional transformations of scaffolds. However, there remain challenges to meet the technical requirements in terms of suitable processability of the bioink formulations, desired mechanical properties of the hydrogel implants, and cell-guided functionality of the biomaterials. Recent bioprinting techniques are reviewed in this article, discussing strategies for hydrogel-based bioinks to mimic native bone tissue-like extracellular matrix environment, including properties of bioink formulations required for bioprinting, structure requirements, and preparation of tough hydrogel scaffolds. Stimulus mechanisms that are commonly used to trigger the dynamic structural and functional transformations of the scaffold are analyzed. At the end, we highlighted the current challenges and possible future avenues of smart hydrogel-based bioink/scaffolds for bone tissue regeneration.
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Affiliation(s)
- Na Li
- School of Chemical Engineering, University of Birmingham, Birmingham, United Kingdom
| | - Rui Guo
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Guangdong Provincial Engineering and Technological Research Centre for Drug Carrier Development, Department of Biomedical Engineering, Jinan University, Guangzhou, China
| | - Zhenyu Jason Zhang
- School of Chemical Engineering, University of Birmingham, Birmingham, United Kingdom
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Ionogels Obtained by Thiol-ene Photopolymerization-Physicochemical Characterization and Application in Electrochemical Capacitors. Molecules 2021; 26:molecules26030758. [PMID: 33540557 PMCID: PMC7867143 DOI: 10.3390/molecules26030758] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/25/2021] [Accepted: 01/28/2021] [Indexed: 12/02/2022] Open
Abstract
Flexible ionogels with good mechanical properties were obtained in situ by thiol-ene photopolymerization of trimethylolpropane tris(3-mercaptopropionate) (TMPTP) and 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione (TATT) (with C=C: SH ratio 1:1) in four imidazolium ionic liquids (1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide—EMImNTf2, 1-ethyl-3-methylimidazolium trifluoromethanesulfonate-EMImOTf, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide-BMImNTf2, and 1-butyl-3-methylimidazolium trifluoromethanesulfonate—BMImOTf) used in the range 50 to 70 wt.%. The mechanical and electrochemical properties of obtained ionogels were examined. Ionogels with ionic liquids (ILs) with NTf2− anion are more puncture resistant than with OTf− anion. Moreover, ionogels with the NTF2− anion have better electrochemical properties than those with the OTf− anion. Although it should be noted that ionogels with the EMIm+ cation have a higher conductivity than the BMIm+. This is connected with intermolecular interactions between polymer matrix and IL related to the polarity of IL described by the Kamlet-Taft parameters. These parameters influence the morphology of the polymer matrix (as shown by the SEM micrograph), which is formed by interconnected polymer spheres.
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31
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Fourmann O, Hausmann MK, Neels A, Schubert M, Nyström G, Zimmermann T, Siqueira G. 3D printing of shape-morphing and antibacterial anisotropic nanocellulose hydrogels. Carbohydr Polym 2021; 259:117716. [PMID: 33673992 DOI: 10.1016/j.carbpol.2021.117716] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 01/22/2021] [Accepted: 01/23/2021] [Indexed: 12/14/2022]
Abstract
We report on a procedure for the preparation, printing and curing of antibacterial poly(N-isopropylacrylamide) nanocellulose-reinforced hydrogels. These composites present a highly anisotropic microstructure which allows to control and modulate the resulting mechanical properties. The incorporation of such nanoparticles enables us to modify both the strength and the humidity-dependent swelling direction of printed parts, offering a fourth-dimensional property to the resulting composite. Antibacterial properties of the hydrogels were obtained by incorporating the functionalized peptide ε-polylysine, modified with the addition of a methacrylate group to ensure UV-immobilization. We highlight the relevance of well-adapted viscoelastic properties of our material for 3D printing by direct ink writing of self-supporting complex structures reaching inclination angles of 45°. The addition of cellulose nanoparticles, the overall ink composition and the printing parameters strongly determine the resulting degree of orientation. The achieved control over the anisotropic swelling properties paves the way to complex three-dimensional structures with programmable actuation.
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Affiliation(s)
- Olivier Fourmann
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Cellulose and Wood Materials Laboratory, 8600, Dübendorf, Switzerland
| | - Michael K Hausmann
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Cellulose and Wood Materials Laboratory, 8600, Dübendorf, Switzerland
| | - Antonia Neels
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Center for X-ray Analytics, 8600, Dübendorf, Switzerland
| | - Mark Schubert
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Cellulose and Wood Materials Laboratory, 8600, Dübendorf, Switzerland
| | - Gustav Nyström
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Cellulose and Wood Materials Laboratory, 8600, Dübendorf, Switzerland.
| | - Tanja Zimmermann
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Cellulose and Wood Materials Laboratory, 8600, Dübendorf, Switzerland
| | - Gilberto Siqueira
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Cellulose and Wood Materials Laboratory, 8600, Dübendorf, Switzerland.
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32
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Zhao C, Zhou L, Chiao M, Yang W. Antibacterial hydrogel coating: Strategies in surface chemistry. Adv Colloid Interface Sci 2020; 285:102280. [PMID: 33010575 DOI: 10.1016/j.cis.2020.102280] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/20/2020] [Accepted: 09/24/2020] [Indexed: 10/23/2022]
Abstract
Hydrogels have emerged as promising antimicrobial materials due to their unique three-dimensional structure, which provides sufficient capacity to accommodate various materials, including small molecules, polymers and particles. Coating substrates with antibacterial hydrogel layers has been recognized as an effective strategy to combat bacterial colonization. To prevent possible delamination of hydrogel coatings from substrates, it is crucial to attach hydrogel layers via stronger links, such as covalent bonds. To date, various surface chemical strategies have been developed to introduce hydrogel coatings on different substrates. In this review, we first give a brief introduction of the major strategies for designing antibacterial coatings. Then, we summarize the chemical methods used to fix the antibacterial hydrogel layer on the substrate, which include surface-initiated graft crosslinking polymerization, anchoring the hydrogel layer on the surface during crosslinking, and chemical crosslinking of layer-by-layer coating. The reaction mechanisms of each method and matched pretreatment strategies are systemically documented with the aim of introducing available protocols to researchers in related fields for designing hydrogel-coated antibacterial surfaces.
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Chundawat NS, Pande N, Sargazi G, Gholipourmalekabadi M, Chauhan NPS. Structure-properties relationship for energy storage redox polymers: a review. JOURNAL OF POLYMER ENGINEERING 2020. [DOI: 10.1515/polyeng-2019-0395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Abstract
Redox-active polymers among the energy storage materials (ESMs) are very attractive due to their exceptional advantages such as high stability and processability as well as their simple manufacturing. Their applications are found to useful in electric vehicle, ultraright computers, intelligent electric gadgets, mobile sensor systems, and portable intelligent clothing. They are found to be more efficient and advantageous in terms of superior processing capacity, quick loading unloading, stronger security, lengthy life cycle, versatility, adjustment to various scales, excellent fabrication process capabilities, light weight, flexible, most significantly cost efficiency, and non-toxicity in order to satisfy the requirement for the usage of these potential applications. The redox-active polymers are produced through organic synthesis, which allows the design and free modification of chemical constructions, which allow for the structure of organic compounds. The redox-active polymers can be finely tuned for the desired ESMs applications with their chemical structures and electrochemical properties. The redox-active polymers synthesis also offers the benefits of high-scale, relatively low reaction, and a low demand for energy. In this review we discussed the relationship between structural properties of different polymers for solar energy and their energy storage applications.
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Affiliation(s)
- Narendra Singh Chundawat
- Department of Chemistry , Faculty of Science , Bhupal Nobles' University , Udaipur , Rajasthan , India
| | - Nishigandh Pande
- School of Mechatronics Engineering , Symbiosis Skills & Professional University , Kiwale , Pune , Maharashtra , India
| | - Ghasem Sargazi
- Environment and Nanochemistry Department , Research Institute of Environmental Science , International Center for Science , High Technology & Environmental Science , Kerman , Iran
| | - Mazaher Gholipourmalekabadi
- Cellular and Molecular Research Centre , Iran University of Medical Sciences , Tehran , Iran
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine , Iran University of Medical Sciences , Tehran , Iran
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34
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Arslan M. Fabrication and reversible disulfide functionalization of PEGylated chitosan-based hydrogels: Platforms for selective immobilization and release of thiol-containing molecules. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109543] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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35
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Hwang J, Sullivan MO, Kiick KL. Targeted Drug Delivery via the Use of ECM-Mimetic Materials. Front Bioeng Biotechnol 2020; 8:69. [PMID: 32133350 PMCID: PMC7040483 DOI: 10.3389/fbioe.2020.00069] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 01/27/2020] [Indexed: 12/14/2022] Open
Abstract
The use of drug delivery vehicles to improve the efficacy of drugs and to target their action at effective concentrations over desired periods of time has been an active topic of research and clinical investigation for decades. Both synthetic and natural drug delivery materials have facilitated locally controlled as well as targeted drug delivery. Extracellular matrix (ECM) molecules have generated widespread interest as drug delivery materials owing to the various biological functions of ECM. Hydrogels created using ECM molecules can provide not only biochemical and structural support to cells, but also spatial and temporal control over the release of therapeutic agents, including small molecules, biomacromolecules, and cells. In addition, the modification of drug delivery carriers with ECM fragments used as cell-binding ligands has facilitated cell-targeted delivery and improved the therapeutic efficiency of drugs through interaction with highly expressed cellular receptors for ECM. The combination of ECM-derived hydrogels and ECM-derived ligand approaches shows synergistic effects, leading to a great promise for the delivery of intracellular drugs, which require specific endocytic pathways for maximal effectiveness. In this review, we provide an overview of cellular receptors that interact with ECM molecules and discuss examples of selected ECM components that have been applied for drug delivery in both local and systemic platforms. Finally, we highlight the potential impacts of utilizing the interaction between ECM components and cellular receptors for intracellular delivery, particularly in tissue regeneration applications.
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Affiliation(s)
- Jeongmin Hwang
- Department of Biomedical Engineering, University of Delaware, Newark, DE, United States
| | - Millicent O. Sullivan
- Department of Biomedical Engineering, University of Delaware, Newark, DE, United States
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, United States
| | - Kristi L. Kiick
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, United States
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36
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Arslan M, Sanyal R, Sanyal A. Cyclodextrin embedded covalently crosslinked networks: synthesis and applications of hydrogels with nano-containers. Polym Chem 2020. [DOI: 10.1039/c9py01679a] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recent advancements in the synthesis of hydrogels containing cyclodextrin (CD) units within the gel network have been reviewed.
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Affiliation(s)
- Mehmet Arslan
- Department of Polymer Engineering
- Faculty of Engineering
- Yalova University
- Yalova
- Turkey
| | - Rana Sanyal
- Department of Chemistry
- Bogazici University
- Istanbul
- Turkey
- Center for Life Sciences and Technologies
| | - Amitav Sanyal
- Department of Chemistry
- Bogazici University
- Istanbul
- Turkey
- Center for Life Sciences and Technologies
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37
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Cengiz N. Glutathione-responsive multifunctionalizable hydrogels via amine-epoxy “click” chemistry. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2019.109441] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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38
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Kawtharani R, Cherry K, Elmasri M, Abarbri M. An Easy Access to 4‐Trifluoromethylated 7‐(4‐Substitued‐1
H
‐1,2,3‐Triazol‐1‐yl)Pyrimido[1,2‐
b
]Pyridazin‐2‐One Systems. ChemistrySelect 2019. [DOI: 10.1002/slct.201902375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Ranin Kawtharani
- Laboratoire de Physico-Chimie des Matériaux et des Electrolytes pour l'Energie (PCM2E). EA 6299. Avenue Monge Faculté des Sciences, Parc de Grandmont 37200 Tours France
- Laboratoire de Chimie Médicinale et de Produit Naturels (LCMPN)Université Libanaise, Faculté des Sciences I Hadat Lebanon
| | - Khalil Cherry
- Laboratoire Matériaux, Catalyse, Environnement et Méthodes Analytiques (MCEMA)Université Libanaise, Faculté des Sciences I, Hadat Lebanon
| | - Mirvat Elmasri
- Laboratoire de Chimie Médicinale et de Produit Naturels (LCMPN)Université Libanaise, Faculté des Sciences I Hadat Lebanon
| | - Mohamed Abarbri
- Laboratoire de Physico-Chimie des Matériaux et des Electrolytes pour l'Energie (PCM2E). EA 6299. Avenue Monge Faculté des Sciences, Parc de Grandmont 37200 Tours France
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Oh J, Jung KI, Jung HW, Khan A. A Modular and Practical Synthesis of Zwitterionic Hydrogels through Sequential Amine-Epoxy "Click" Chemistry and N-Alkylation Reaction. Polymers (Basel) 2019; 11:E1491. [PMID: 31547408 PMCID: PMC6780745 DOI: 10.3390/polym11091491] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 09/11/2019] [Accepted: 09/11/2019] [Indexed: 02/03/2023] Open
Abstract
In this work, the amine-epoxy "click" reaction is shown to be a valuable general tool in the synthesis of reactive hydrogels. The practicality of this reaction arises due to its catalyst-free nature, its operation in water, and commercial availability of a large variety of amine and epoxide molecules that can serve as hydrophilic network precursors. Therefore, hydrogels can be prepared in a modular fashion through a simple mixing of the precursors in water and used as produced (without requiring any post-synthesis purification step). The gelation behavior and final hydrogel properties depend upon the molecular weight of the precursors and can be changed as per the requirement. A post-synthesis modification through alkylation at the nitrogen atom of the newly formed β-hydroxyl amine linkages allows for functionalizing the hydrogels. For example, ring-opening reaction of cyclic sulfonic ester gives rise to surfaces with a zwitterionic character. Finally, the established gelation chemistry can be combined with soft lithography techniques such as micromolding in capillaries (MIMIC) to obtain hydrogel microstructures.
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Affiliation(s)
- Junki Oh
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Korea.
| | - Kevin Injoe Jung
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Korea.
| | - Hyun Wook Jung
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Korea.
| | - Anzar Khan
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Korea.
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40
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Cengiz N. Fabrication of Multifunctional Stimuli‐Responsive Hydrogels Susceptible to both pH and Metal Cation for Visual Detections. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900212] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Nergiz Cengiz
- Department of Chemistry Tekirdag Namik Kemal University Degirmenalti 59030 Tekirdag Turkey
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41
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Hu W, Wang Z, Xiao Y, Zhang S, Wang J. Advances in crosslinking strategies of biomedical hydrogels. Biomater Sci 2019; 7:843-855. [PMID: 30648168 DOI: 10.1039/c8bm01246f] [Citation(s) in RCA: 387] [Impact Index Per Article: 77.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Biomedical hydrogels as sole repair matrices or combined with pre-seeded cells and bioactive growth factors are extensively applied in tissue engineering and regenerative medicine. Hydrogels normally provide three dimensional structures for cell adhesion and proliferation or the controlled release of the loading of drugs or proteins. Various physiochemical properties of hydrogels endow them with distinct applications. In this review, we present the commonly used crosslinking method for hydrogel synthesis involving physical and chemical crosslinks and summarize their current progress and future perspectives.
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Affiliation(s)
- Weikang Hu
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan 430074, P. R. China.
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42
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Jain Y, Kumari M, Gupta R. Sonochemical synthesis of fluorescent 1,4-disubstituted triazoles using l-phenylalanine as an accelerator ligand in aqueous media. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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43
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Jain Y, Gupta R, Yadav P, Kumari M. Chemical Waltz of Organic Molecules "On Water": Saline-Assisted Sustainable Regioselective Synthesis of Fluorogenic Heterobioconjugates via Click Reaction. ACS OMEGA 2019; 4:3582-3592. [PMID: 31459572 PMCID: PMC6648582 DOI: 10.1021/acsomega.8b03167] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 01/31/2019] [Indexed: 05/16/2023]
Abstract
A new sustainable green protocol for obtaining highly fluorogenic heterobioconjugates by a well-known copper-mediated azide-alkyne cycloaddition click reaction of nonfluorescent 3-azidocoumarins/benzyl azides (2a-f) and terminal alkynes (1a-e) using aqueous NaCl as a cheap and nontoxic salting-out agent under ultrasonication at ambient temperature is described. The presence of aqueous NaCl significantly influences the reaction by disturbing the water kosmotropes and augments the hydrophobic interaction of water-insoluble reactants, thus making the reaction feasible in water at neutral pH. The "beauty" of the presented ecofriendly approach is further boosted up by recycling the aqueous filtrate of the reaction mixture without further addition of NaCl, CuSO4·5H2O, and Na ascorbate up to seven cycles, resulting in effectively low copper loading (100 ppm) with excellent turn-over number (4850) and turn-over frequency (88.18 min-1). A gram-scale synthesis was also successfully achieved with 92% yield, further elaborating the scope of this methodology.
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Affiliation(s)
- Yachana Jain
- Department of Chemistry and Materials Research Centre, Malaviya National Institute of Technology Jaipur, Jaipur 302017, India
| | - Ragini Gupta
- Department of Chemistry and Materials Research Centre, Malaviya National Institute of Technology Jaipur, Jaipur 302017, India
- E-mail:
| | - Priya Yadav
- Department of Chemistry and Materials Research Centre, Malaviya National Institute of Technology Jaipur, Jaipur 302017, India
| | - Mitlesh Kumari
- Department of Chemistry and Materials Research Centre, Malaviya National Institute of Technology Jaipur, Jaipur 302017, India
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44
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Dai Y, Chen X, Zhang X. Recent Developments in the Area of Click‐Crosslinked Nanocarriers for Drug Delivery. Macromol Rapid Commun 2018; 40:e1800541. [DOI: 10.1002/marc.201800541] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 10/11/2018] [Indexed: 01/10/2023]
Affiliation(s)
- Yu Dai
- Engineering Research Center of Nano‐Geomaterials of Ministry of EducationFaculty of Materials Science and Chemistry, China University of Geosciences Wuhan 430074 China
| | - Xin Chen
- School of Chemical Engineering and Technology, Shaanxi Key Laboratory of Energy Chemical Process IntensificationXi'an Jiaotong University Xi'an 710049 China
| | - Xiaojin Zhang
- Engineering Research Center of Nano‐Geomaterials of Ministry of EducationFaculty of Materials Science and Chemistry, China University of Geosciences Wuhan 430074 China
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Gopinathan J, Noh I. Click Chemistry-Based Injectable Hydrogels and Bioprinting Inks for Tissue Engineering Applications. Tissue Eng Regen Med 2018; 15:531-546. [PMID: 30603577 PMCID: PMC6171698 DOI: 10.1007/s13770-018-0152-8] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 07/27/2018] [Accepted: 07/30/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The tissue engineering and regenerative medicine approach require biomaterials which are biocompatible, easily reproducible in less time, biodegradable and should be able to generate complex three-dimensional (3D) structures to mimic the native tissue structures. Click chemistry offers the much-needed multifunctional hydrogel materials which are interesting biomaterials for the tissue engineering and bioprinting inks applications owing to their excellent ability to form hydrogels with printability instantly and to retain the live cells in their 3D network without losing the mechanical integrity even under swollen state. METHODS In this review, we present the recent developments of in situ hydrogel in the field of click chemistry reported for the tissue engineering and 3D bioinks applications, by mainly covering the diverse types of click chemistry methods such as Diels-Alder reaction, strain-promoted azide-alkyne cycloaddition reactions, thiol-ene reactions, oxime reactions and other interrelated reactions, excluding enzyme-based reactions. RESULTS The click chemistry-based hydrogels are formed spontaneously on mixing of reactive compounds and can encapsulate live cells with high viability for a long time. The recent works reported by combining the advantages of click chemistry and 3D bioprinting technology have shown to produce 3D tissue constructs with high resolution using biocompatible hydrogels as bioinks and in situ injectable forms. CONCLUSION Interestingly, the emergence of click chemistry reactions in bioink synthesis for 3D bioprinting have shown the massive potential of these reaction methods in creating 3D tissue constructs. However, the limitations and challenges involved in the click chemistry reactions should be analyzed and bettered to be applied to tissue engineering and 3D bioinks. The future scope of these materials is promising, including their applications in in situ 3D bioprinting for tissue or organ regeneration.
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Affiliation(s)
- Janarthanan Gopinathan
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology (Seoul Tech), 232 Gongneung-ro, Nowon-Gu, Seoul, 01811 Republic of Korea
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology (Seoul Tech), 232 Gongneung-ro, Nowon-Gu, Seoul, 01811 Republic of Korea
| | - Insup Noh
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology (Seoul Tech), 232 Gongneung-ro, Nowon-Gu, Seoul, 01811 Republic of Korea
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology (Seoul Tech), 232 Gongneung-ro, Nowon-Gu, Seoul, 01811 Republic of Korea
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Hwang J, Lee DG, Yeo H, Rao J, Zhu Z, Shin J, Jeong K, Kim S, Jung HW, Khan A. Proton Transfer Hydrogels: Versatility and Applications. J Am Chem Soc 2018; 140:6700-6709. [DOI: 10.1021/jacs.8b03514] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- JiHyeon Hwang
- Department of Chemical and Biological Engineering, Korea University, Seoul, 02841, South Korea
| | - Dong G. Lee
- Department of Chemical and Biological Engineering, Korea University, Seoul, 02841, South Korea
| | - Hyunki Yeo
- Department of Chemical and Biological Engineering, Korea University, Seoul, 02841, South Korea
| | - Jingyi Rao
- Department of Chemical and Biological Engineering, Korea University, Seoul, 02841, South Korea
| | - Zhiyuan Zhu
- Department of Chemical and Biological Engineering, Korea University, Seoul, 02841, South Korea
| | - Jawon Shin
- Center for Theragnosis, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - Keunsoo Jeong
- Center for Theragnosis, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - Sehoon Kim
- Center for Theragnosis, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - Hyun Wook Jung
- Department of Chemical and Biological Engineering, Korea University, Seoul, 02841, South Korea
| | - Anzar Khan
- Department of Chemical and Biological Engineering, Korea University, Seoul, 02841, South Korea
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Huxley MT, Burgun A, Ghodrati H, Coghlan CJ, Lemieux A, Champness NR, Huang DM, Doonan CJ, Sumby CJ. Protecting-Group-Free Site-Selective Reactions in a Metal-Organic Framework Reaction Vessel. J Am Chem Soc 2018; 140:6416-6425. [PMID: 29699391 DOI: 10.1021/jacs.8b02896] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Site-selective organic transformations are commonly required in the synthesis of complex molecules. By employing a bespoke metal-organic framework (MOF, 1·[Mn(CO)3N3]), in which coordinated azide anions are precisely positioned within 1D channels, we present a strategy for the site-selective transformation of dialkynes into alkyne-functionalized triazoles. As an illustration of this approach, 1,7-octadiyne-3,6-dione stoichiometrically furnishes the mono-"click" product N-methyl-4-hex-5'-ynl-1',4'-dione-1,2,3-triazole with only trace bis-triazole side-product. Stepwise insights into conversions of the MOF reaction vessel were obtained by X-ray crystallography, demonstrating that the reactive sites are "isolated" from one another. Single-crystal to single-crystal transformations of the Mn(I)-metalated material 1·[Mn(CO)3(H2O)]Br to the corresponding azide species 1·[Mn(CO)3N3] with sodium azide, followed by a series of [3+2] azide-alkyne cycloaddition reactions, are reported. The final liberation of the "click" products from the porous material is achieved by N-alkylation with MeBr, which regenerates starting MOF 1·[Mn(CO)3(H2O)]Br and releases the organic products, as characterized by NMR spectroscopy and mass spectrometry. Once the dialkyne length exceeds the azide separation, site selectivity is lost, confirming the critical importance of isolated azide moieties for this strategy. We postulate that carefully designed MOFs can act as physical protecting groups to facilitate other site-selective and chemoselective transformations.
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Affiliation(s)
- Michael T Huxley
- Department of Chemistry and Centre for Advanced Nanomaterials , The University of Adelaide , Adelaide , South Australia 5005 , Australia
| | - Alexandre Burgun
- Department of Chemistry and Centre for Advanced Nanomaterials , The University of Adelaide , Adelaide , South Australia 5005 , Australia
| | - Hanieh Ghodrati
- Department of Chemistry and Centre for Advanced Nanomaterials , The University of Adelaide , Adelaide , South Australia 5005 , Australia
| | - Campbell J Coghlan
- Department of Chemistry and Centre for Advanced Nanomaterials , The University of Adelaide , Adelaide , South Australia 5005 , Australia
| | - Anthony Lemieux
- Department of Chemistry and Centre for Advanced Nanomaterials , The University of Adelaide , Adelaide , South Australia 5005 , Australia
| | - Neil R Champness
- School of Chemistry , University of Nottingham , Nottingham NG7 2RD , United Kingdom
| | - David M Huang
- Department of Chemistry and Centre for Advanced Nanomaterials , The University of Adelaide , Adelaide , South Australia 5005 , Australia
| | - Christian J Doonan
- Department of Chemistry and Centre for Advanced Nanomaterials , The University of Adelaide , Adelaide , South Australia 5005 , Australia
| | - Christopher J Sumby
- Department of Chemistry and Centre for Advanced Nanomaterials , The University of Adelaide , Adelaide , South Australia 5005 , Australia
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Dargaville TR, Park J, Hoogenboom R. Poly(2‐oxazoline) Hydrogels: State‐of‐the‐Art and Emerging Applications. Macromol Biosci 2018; 18:e1800070. [DOI: 10.1002/mabi.201800070] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 03/28/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Tim R. Dargaville
- Institute of Health and Biomedical Innovation Science and Engineering Faculty Queensland University of Technology Queensland 4001 Australia
| | - Jong‐Ryul Park
- Institute of Health and Biomedical Innovation Science and Engineering Faculty Queensland University of Technology Queensland 4001 Australia
| | - Richard Hoogenboom
- Supramolecular Chemistry Group Centre of Macromolecular Chemistry (CMaC) Department of Organic and Macromolecular Chemistry Ghent University Krijgslaan 281 S4 B‐9000 Ghent Belgium
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Gevrek TN, Cosar M, Aydin D, Kaga E, Arslan M, Sanyal R, Sanyal A. Facile Fabrication of a Modular "Catch and Release" Hydrogel Interface: Harnessing Thiol-Disulfide Exchange for Reversible Protein Capture and Cell Attachment. ACS APPLIED MATERIALS & INTERFACES 2018; 10:14399-14409. [PMID: 29637775 DOI: 10.1021/acsami.8b00802] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Surfaces engineered to "specifically capture" and "release on demand" analytes ranging from biomolecules to cells find niche applications in areas such as diagnostics and detection. Utilization of a disulfide-based linker as a building block allows fabrication of a novel hydrogel-based platform that incorporates a "catch and release" attribute. Hydrogels incorporating pyridyl disulfide groups as thiol-reactive handles were prepared by photopolymerization in the presence of a poly(ethylene glycol) (PEG)-based cross-linker. A range of bulk and micropatterned hydrogels with varying amounts of the reactive group were prepared using PEG-based monomers with different chain lengths. Thiol-containing molecules were conjugated to these hydrogels through the thiol-disulfide exchange reaction under ambient conditions with high efficiencies, as determined by UV-vis spectroscopy. Facile conjugation of a thiol-containing fluorescent dye, namely 4,4-difluoro-1,3,5,7-tetramethyl-8-[(10-mercapto)]-4-bora-3 a,4 a-diaza- s-indacene, was demonstrated, followed by its effective cleavage in the presence of dithiothreitol (DTT), a thiol-containing disulfide-reducing agent. Conjugation of a biotin-containing ligand onto the hydrogels allowed specific binding of protein extravidin when exposed to a mixture of extravidin and bovine serum albumin. The bound protein could be released from the hydrogel by simple exposure to a DTT solution. Likewise, hydrogels modified with a cell-adhesive peptide unit containing the RGD sequence acted as favorable substrates for cellular attachment. Incubation of these cell-attached hydrogel surfaces in a DTT-containing solution leads to facile detachment of cells from the surfaces, while retaining a high level of cell viability. It can be envisioned that the benign nature of these hydrogels, their facile fabrication, and modular functionalization will make them attractive platforms for many applications.
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Biomaterial Scaffolds in Regenerative Therapy of the Central Nervous System. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7848901. [PMID: 29805977 PMCID: PMC5899851 DOI: 10.1155/2018/7848901] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 02/18/2018] [Accepted: 02/21/2018] [Indexed: 02/08/2023]
Abstract
The central nervous system (CNS) is the most important section of the nervous system as it regulates the function of various organs. Injury to the CNS causes impairment of neurological functions in corresponding sites and further leads to long-term patient disability. CNS regeneration is difficult because of its poor response to treatment and, to date, no effective therapies have been found to rectify CNS injuries. Biomaterial scaffolds have been applied with promising results in regeneration medicine. They also show great potential in CNS regeneration for tissue repair and functional recovery. Biomaterial scaffolds are applied in CNS regeneration predominantly as hydrogels and biodegradable scaffolds. They can act as cellular supportive scaffolds to facilitate cell infiltration and proliferation. They can also be combined with cell therapy to repair CNS injury. This review discusses the categories and progression of the biomaterial scaffolds that are applied in CNS regeneration.
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