51
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Singh B, Mohan M, Singh B. Synthesis and characterization of the azadirachta indica gum–polyacrylamide interpenetrating network for biomedical applications. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2020. [DOI: 10.1016/j.carpta.2020.100017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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52
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Hogan KJ, Mikos AG. Biodegradable thermoresponsive polymers: Applications in drug delivery and tissue engineering. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.123063] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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53
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Uchida N, Muraoka T. Current Progress in Cross-Linked Peptide Self-Assemblies. Int J Mol Sci 2020; 21:E7577. [PMID: 33066439 PMCID: PMC7589166 DOI: 10.3390/ijms21207577] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/06/2020] [Accepted: 10/09/2020] [Indexed: 02/07/2023] Open
Abstract
Peptide-based fibrous supramolecular assemblies represent an emerging class of biomaterials that can realize various bioactivities and structures. Recently, a variety of peptide fibers with attractive functions have been designed together with the discovery of many peptide-based self-assembly units. Cross-linking of the peptide fibers is a key strategy to improve the functions of these materials. The cross-linking of peptide fibers forming three-dimensional networks in a dispersion can lead to changes in physical and chemical properties. Hydrogelation is a typical change caused by cross-linking, which makes it applicable to biomaterials such as cell scaffold materials. Cross-linking methods, which have been conventionally developed using water-soluble covalent polymers, are also useful in supramolecular peptide fibers. In the case of peptide fibers, unique cross-linking strategies can be designed by taking advantage of the functions of amino acids. This review focuses on the current progress in the design of cross-linked peptide fibers and their applications.
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Affiliation(s)
- Noriyuki Uchida
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Takahiro Muraoka
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
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54
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Prusty K, Swain SK. Polypropylene oxide/polyethylene oxide‐cellulose hybrid nanocomposite hydrogels as drug delivery vehicle. J Appl Polym Sci 2020. [DOI: 10.1002/app.49921] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Kalyani Prusty
- Department of Chemistry Veer Surendra Sai University of Technology Sambalpur Odisha India
| | - Sarat K. Swain
- Department of Chemistry Veer Surendra Sai University of Technology Sambalpur Odisha India
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55
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Yao K, Gong G, Fu Z, Wang Y, Zhang L, Li G, Yang Y. Synthesis and Evaluation of Cytocompatible Alkyne-Containing Poly(β-amino ester)-Based Hydrogels Functionalized via Click Reaction. ACS Macro Lett 2020; 9:1391-1397. [PMID: 35638631 DOI: 10.1021/acsmacrolett.0c00545] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Although poly(β-amino esters) (PAEs) have been widely applied in nonviral gene transfection, drug delivery systems, and regenerative medicine, the multifunctional modification of PAEs and bio-orthogonal strategies of PAE-based hydrogel functionalization is still a challenge. Herein, a strategy of poly(β-amino ester)-based hydrogel functionalization was developed via bio-orthogonal reactions in this study. Acrylate-terminated poly(β-amino esters) containing alkyne groups were synthesized by Michael addition reaction. Alkyne groups on poly(β-amino esters) could conjugate bioactive molecules with azide of K(N3)RGD via copper-catalyzed azide-alkyne cycloaddition, and terminal acrylate groups could in situ polymerize to prepare a hydrogel. A biomimetic peptide K(N3)RGD functionalized hydrogel was prepared by polymerization of acrylate-terminated poly(β-amino esters) containing conjugated peptide and polyethylene glycol diacrylate (PEGDA). The storage modulus and mechanical properties exhibited an increased trend with the increased concentration; nevertheless, swelling ratio and surface wetting properties demonstrated a decreased tendency by increased concentrations. Cell proliferation and live/dead staining showed that Schwann cells plated on the hydrogel with an elastic modulus of 25.39 KPa are more suitable for proliferation and function exertion of Schwann cells compared with that of 42.11 and 57.86 KPa, and KRGD-conjugated hydrogel could increase the elongation of Schwann cells relative to nonconjugated hydrogels. This azide-alkyne strategy may be a promising candidate for hydrogel functionalization in tissue engineering and other biomedical applications.
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Affiliation(s)
- Ke Yao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, PR China
| | - Guangming Gong
- Department of Pharmaceutics, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, China
| | - Zexi Fu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, PR China
| | - Yuqing Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, PR China
| | - Luzhong Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, PR China
| | - Guicai Li
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, PR China
| | - Yumin Yang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, PR China
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56
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Abstract
The specific microenvironment that cells reside in fundamentally impacts their broader function in tissues and organs. At its core, this microenvironment is composed of precise arrangements of cells that encourage homotypic and heterotypic cell-cell interactions, biochemical signaling through soluble factors like cytokines, hormones, and autocrine, endocrine, or paracrine secretions, and the local extracellular matrix (ECM) that provides physical support and mechanobiological stimuli, and further regulates biochemical signaling through cell-ECM interactions like adhesions and growth factor sequestering. Each cue provided in the microenvironment dictates cellular behavior and, thus, overall potential to perform tissue and organ specific function. It follows that in order to recapitulate physiological cell responses and develop constructs capable of replacing damaged tissue, we must engineer the cellular microenvironment very carefully. Many great strides have been made toward this goal using various three-dimensional (3D) tissue culture scaffolds and specific media conditions. Among the various 3D biomimetic scaffolds, synthetic hydrogels have emerged as a highly tunable and tissue-like biomaterial well-suited for implantable tissue-engineered constructs. Because many synthetic hydrogel materials are inherently bioinert, they minimize unintentional cell responses and thus are good candidates for long-term implantable grafts, patches, and organs. This review will provide an overview of commonly used biomaterials for forming synthetic hydrogels for tissue engineering applications and techniques for modifying them to with bioactive properties to elicit the desired cell responses.
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Affiliation(s)
- Asli Z Unal
- Department of Biomedical Engineering, Duke University, 101 Science Drive, Campus Box 90281, Durham, North Carolina 27708, United States
| | - Jennifer L West
- Department of Biomedical Engineering, Duke University, 101 Science Drive, Campus Box 90281, Durham, North Carolina 27708, United States
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57
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Chimisso V, Aleman Garcia MA, Yorulmaz Avsar S, Dinu IA, Palivan CG. Design of Bio-Conjugated Hydrogels for Regenerative Medicine Applications: From Polymer Scaffold to Biomolecule Choice. Molecules 2020; 25:E4090. [PMID: 32906772 PMCID: PMC7571016 DOI: 10.3390/molecules25184090] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/28/2020] [Accepted: 09/04/2020] [Indexed: 12/26/2022] Open
Abstract
Bio-conjugated hydrogels merge the functionality of a synthetic network with the activity of a biomolecule, becoming thus an interesting class of materials for a variety of biomedical applications. This combination allows the fine tuning of their functionality and activity, whilst retaining biocompatibility, responsivity and displaying tunable chemical and mechanical properties. A complex scenario of molecular factors and conditions have to be taken into account to ensure the correct functionality of the bio-hydrogel as a scaffold or a delivery system, including the polymer backbone and biomolecule choice, polymerization conditions, architecture and biocompatibility. In this review, we present these key factors and conditions that have to match together to ensure the correct functionality of the bio-conjugated hydrogel. We then present recent examples of bio-conjugated hydrogel systems paving the way for regenerative medicine applications.
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Affiliation(s)
| | | | | | | | - Cornelia G. Palivan
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR-1096, 4058 Basel, Switzerland; (V.C.); (M.A.A.G.); (S.Y.A.); (I.A.D.)
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58
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Zhang Z, He C, Rong Y, Ren H, Wang T, Zou Z, Chen X. A fast and versatile cross-linking strategy via o-phthalaldehyde condensation for mechanically strengthened and functional hydrogels. Natl Sci Rev 2020; 8:nwaa128. [PMID: 34691609 PMCID: PMC8288384 DOI: 10.1093/nsr/nwaa128] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/21/2020] [Accepted: 05/24/2020] [Indexed: 11/12/2022] Open
Abstract
Abstract
Fast and catalyst-free cross-linking strategy is of great significance for construction of covalently cross-linked hydrogels. Here, we report the condensation reaction between o-phthalaldehyde (OPA) and N-nucleophiles (primary amine, hydrazide and aminooxy) for hydrogel formation for the first time. When four-arm poly(ethylene glycol) (4aPEG) capped with OPA was mixed with various N-nucleophile-terminated 4aPEG as building blocks, hydrogels were formed with superfast gelation rate, higher mechanical strength and markedly lower critical gelation concentrations, compared to benzaldehyde-based counterparts. Small molecule model reactions indicate the key to these cross-links is the fast formation of heterocycle phthalimidine product or isoindole (bis)hemiaminal intermediates, depending on the N-nucleophiles. The second-order rate constant for the formation of phthalimidine linkage (4.3 M−1 s−1) is over 3000 times and 200 times higher than those for acylhydrazone and oxime formation from benzaldehyde, respectively, and comparable to many cycloaddition click reactions. Based on the versatile OPA chemistry, various hydrogels can be readily prepared from naturally derived polysaccharides, proteins or synthetic polymers without complicated chemical modification. Moreover, biofunctionality is facilely imparted to the hydrogels by introducing amine-bearing peptides via the reaction between OPA and amino group.
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Affiliation(s)
- Zhen Zhang
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Chaoliang He
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Yan Rong
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hui Ren
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Tianran Wang
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Zheng Zou
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Xuesi Chen
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
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59
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Fox CS, Berry HA, Pedigo S. Development and Characterization of Calmodulin-Based Copolymeric Hydrogels. Biomacromolecules 2020; 21:2073-2086. [PMID: 32320226 DOI: 10.1021/acs.biomac.0c00043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Recently, there has been growing interest in harnessing genetically engineered polymers to develop responsive biomaterials, such as hydrogels. Unlike their synthetic counterparts, genetically engineered polymers are produced without the use of toxic reagents and can easily be programmed to incorporate desirable hydrogel properties, including bioactivity, biodegradability, and monodispersity. Herein, we report the development of a copolymeric hydrogel that is based on the calcium-dependent protein, calmodulin (CaM). For our system, CaM and M13, a CaM-binding peptide, were incorporated into genetically engineered polymers with intervening linkers containing cleavable sequences. Spectroscopic and multiple-particle tracking (MPT) studies demonstrate that these polymers self-assemble through calcium-stabilized, noncovalent crosslinking to form a soft viscoelastic material. MPT further revealed that gelation is concentration-dependent. Collagenase digests show that the protein polymers are selectively degraded through specific cleavage. The modularity and stimuli-responsiveness of this system suggest its potential as a flexible scaffold for biomedical applications.
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Affiliation(s)
- Christopher S Fox
- Department of Chemistry and Biochemistry, University of Mississippi, University, Mississippi 38677, United States
| | - Hunter A Berry
- Department of Chemistry and Biochemistry, University of Mississippi, University, Mississippi 38677, United States
| | - Susan Pedigo
- Department of Chemistry and Biochemistry, University of Mississippi, University, Mississippi 38677, United States
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60
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Hu Y, Jeong D, Kim Y, Kim S, Jung S. Preparation of Succinoglycan Hydrogel Coordinated With Fe 3+ Ions for Controlled Drug Delivery. Polymers (Basel) 2020; 12:E977. [PMID: 32331339 PMCID: PMC7240483 DOI: 10.3390/polym12040977] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 01/06/2023] Open
Abstract
Hydrogel materials with a gel-sol conversion due to external environmental changes have potential applications in a wide range of fields, including controlled drug delivery. Succinoglycans are anionic extracellular polysaccharides produced by various bacteria, including Sinorhizobium species, which have diverse applications. In this study, the rheological analysis confirmed that succinoglycan produced by Sinorhizobium meliloti Rm 1021 binds weakly to various metal ions, including Fe2+ cations, to maintain a sol form, and binds strongly to Fe3+ cations to maintain a gel form. The Fe3+-coordinated succinoglycan (Fe3+-SG) hydrogel was analyzed by attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy, circular dichroism (CD), and field-emission scanning electron microscopy (FE-SEM). Our results revealed that the Fe3+ cations that coordinated with succinoglycan were converted to Fe2+ by a reducing agent and visible light, promoting a gel-sol conversion. The Fe3+-SG hydrogel was then successfully used for controlled drug delivery based on gel-sol conversion in the presence of reducing agents and visible light. As succinoglycan is nontoxic, it is a potential material for controlled drug delivery.
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Affiliation(s)
- Yiluo Hu
- Department of Systems Biotechnology & Dept. of Bioscience and Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Center for Biotechnology Research in UBITA (CBRU), Konkuk University, Seoul 05029, Korea; (Y.H.); (D.J.); (Y.K.); (S.K.)
| | - Daham Jeong
- Department of Systems Biotechnology & Dept. of Bioscience and Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Center for Biotechnology Research in UBITA (CBRU), Konkuk University, Seoul 05029, Korea; (Y.H.); (D.J.); (Y.K.); (S.K.)
- Institute for Ubiquitous Information Technology and Applications (UBITA), Center for Biotechnology Research in UBITA (CBRU), Konkuk University, Seoul 05029, Korea
| | - Yohan Kim
- Department of Systems Biotechnology & Dept. of Bioscience and Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Center for Biotechnology Research in UBITA (CBRU), Konkuk University, Seoul 05029, Korea; (Y.H.); (D.J.); (Y.K.); (S.K.)
| | - Seonmok Kim
- Department of Systems Biotechnology & Dept. of Bioscience and Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Center for Biotechnology Research in UBITA (CBRU), Konkuk University, Seoul 05029, Korea; (Y.H.); (D.J.); (Y.K.); (S.K.)
| | - Seunho Jung
- Department of Systems Biotechnology & Dept. of Bioscience and Biotechnology, Microbial Carbohydrate Resource Bank (MCRB), Center for Biotechnology Research in UBITA (CBRU), Konkuk University, Seoul 05029, Korea; (Y.H.); (D.J.); (Y.K.); (S.K.)
- Institute for Ubiquitous Information Technology and Applications (UBITA), Center for Biotechnology Research in UBITA (CBRU), Konkuk University, Seoul 05029, Korea
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61
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Liu J, Tian L, Qiao Y, Zhou S, Patil AJ, Wang K, Li M, Mann S. Hydrogel‐Immobilized Coacervate Droplets as Modular Microreactor Assemblies. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jianbo Liu
- State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringKey Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan ProvinceHunan University Changsha 410082 P. R. China
- Centre for Protolife Research and Centre for Organized Matter ChemistrySchool of ChemistryUniversity of Bristol Bristol BS8 1TS UK
| | - Liangfei Tian
- Centre for Protolife Research and Centre for Organized Matter ChemistrySchool of ChemistryUniversity of Bristol Bristol BS8 1TS UK
| | - Yan Qiao
- Centre for Protolife Research and Centre for Organized Matter ChemistrySchool of ChemistryUniversity of Bristol Bristol BS8 1TS UK
| | - Shaohong Zhou
- State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringKey Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan ProvinceHunan University Changsha 410082 P. R. China
| | - Avinash J. Patil
- Centre for Protolife Research and Centre for Organized Matter ChemistrySchool of ChemistryUniversity of Bristol Bristol BS8 1TS UK
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringKey Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan ProvinceHunan University Changsha 410082 P. R. China
| | - Mei Li
- Centre for Protolife Research and Centre for Organized Matter ChemistrySchool of ChemistryUniversity of Bristol Bristol BS8 1TS UK
| | - Stephen Mann
- Centre for Protolife Research and Centre for Organized Matter ChemistrySchool of ChemistryUniversity of Bristol Bristol BS8 1TS UK
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62
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Liu J, Tian L, Qiao Y, Zhou S, Patil AJ, Wang K, Li M, Mann S. Hydrogel‐Immobilized Coacervate Droplets as Modular Microreactor Assemblies. Angew Chem Int Ed Engl 2020; 59:6853-6859. [DOI: 10.1002/anie.201916481] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/27/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Jianbo Liu
- State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringKey Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan ProvinceHunan University Changsha 410082 P. R. China
- Centre for Protolife Research and Centre for Organized Matter ChemistrySchool of ChemistryUniversity of Bristol Bristol BS8 1TS UK
| | - Liangfei Tian
- Centre for Protolife Research and Centre for Organized Matter ChemistrySchool of ChemistryUniversity of Bristol Bristol BS8 1TS UK
| | - Yan Qiao
- Centre for Protolife Research and Centre for Organized Matter ChemistrySchool of ChemistryUniversity of Bristol Bristol BS8 1TS UK
| | - Shaohong Zhou
- State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringKey Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan ProvinceHunan University Changsha 410082 P. R. China
| | - Avinash J. Patil
- Centre for Protolife Research and Centre for Organized Matter ChemistrySchool of ChemistryUniversity of Bristol Bristol BS8 1TS UK
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringKey Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan ProvinceHunan University Changsha 410082 P. R. China
| | - Mei Li
- Centre for Protolife Research and Centre for Organized Matter ChemistrySchool of ChemistryUniversity of Bristol Bristol BS8 1TS UK
| | - Stephen Mann
- Centre for Protolife Research and Centre for Organized Matter ChemistrySchool of ChemistryUniversity of Bristol Bristol BS8 1TS UK
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63
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Abstract
We explore the design and synthesis of hydrogel scaffolds for tissue engineering from the perspective of the underlying polymer chemistry. The key polymers, properties and architectures used, and their effect on tissue growth are discussed.
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64
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Li Y, Chengxin Hu, Lan J, Yan B, Zhang Y, Shi L, Ran R. Hydrogel-based temperature sensor with water retention, frost resistance and remoldability. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.122027] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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65
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Guo JL, Li A, Kim YS, Xie VY, Smith BT, Watson E, Bao G, Mikos AG. Click functionalized, tissue-specific hydrogels for osteochondral tissue engineering. J Biomed Mater Res A 2019; 108:684-693. [PMID: 31755226 DOI: 10.1002/jbm.a.36848] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/14/2019] [Accepted: 11/18/2019] [Indexed: 01/06/2023]
Abstract
Osteochondral repair requires the induction of both articular cartilage and subchondral bone development, necessitating the presentation of multiple tissue-specific cues for these highly distinct tissues. To provide a singular hydrogel system for the repair of either tissue type, we have developed biofunctionalized, mesenchymal stem cell-laden hydrogels that can present in situ biochemical cues for either chondrogenesis or osteogenesis by simple click modification of a crosslinker, poly(glycolic acid)-poly(ethylene glycol)-poly(glycolic acid)-di(but-2-yne-1,4-dithiol) (PdBT). After modifying PdBT with either cartilage-specific biomolecules (N-cadherin peptide, chondroitin sulfate) or bone-specific biomolecules (bone marrow homing peptide 1, glycine-histidine-lysine peptide), the biofunctionalized, PdBT-crosslinked hydrogels can selectively promote the desired bone- or cartilage-like matrix synthesis and tissue-specific gene expression, with effects dependent on both biomolecule selection and concentration. Our findings establish the versatility of this click functionalized hydrogel system as well as its ability to promote in vitro development of osteochondral tissue phenotypes.
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Affiliation(s)
- Jason L Guo
- Department of Bioengineering, Rice University, Houston, Texas
| | - Ang Li
- Department of Bioengineering, Rice University, Houston, Texas
| | - Yu Seon Kim
- Department of Bioengineering, Rice University, Houston, Texas
| | - Virginia Y Xie
- Department of Bioengineering, Rice University, Houston, Texas
| | - Brandon T Smith
- Department of Bioengineering, Rice University, Houston, Texas
| | - Emma Watson
- Department of Bioengineering, Rice University, Houston, Texas
| | - Gang Bao
- Department of Bioengineering, Rice University, Houston, Texas
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66
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Kim YS, Guo JL, Lam J, Grande-Allen KJ, Engel PS, Mikos AG. Synthesis of Injectable, Thermally Responsive, Chondroitin Sulfate-Cross-Linked Poly( N-isopropylacrylamide) Hydrogels. ACS Biomater Sci Eng 2019; 5:6405-6413. [PMID: 33417793 DOI: 10.1021/acsbiomaterials.9b01450] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this study, we describe the synthesis and characterization of a biosynthetic hydrogel system that consists of a thermally responsive macromer and biological cross-linkers. By combining a poly(N-isopropylacrylamide)-based thermogelling macromer with epoxy pendant groups and chondroitin sulfate cross-linkers that are modified to contain either hydrazide or N-hydroxysuccinimide pendant groups, we successfully fabricated a system that undergoes gelation when the temperature is raised from room temperature to 37 °C and is further stabilized via covalent links between the macromers. The anionic charge on chondroitin sulfate contributed to a high degree of gel swelling, while the cross-linking reaction between the macromers prevented post-formation syneresis. The rate of degradation of CS-cross-linked hydrogels was dependent on the degree of substitution of hydrazide-modified chondroitin sulfate cross-linkers. A higher molar content of chondroitin sulfate led to a greater osmotic pressure within the hydrogel and thus a higher compressive modulus. On the other hand, excessive amounts of chondroitin sulfate caused time-dependent cytotoxicity, as confirmed by a leachables cytocompatibility study. Overall, the system described in this study provides a versatile platform to synthesize hydrogels with differing combinations of compressive moduli and rates of degradation, which is achievable by varying the degree of substitution of hydrazide groups on CS-based cross-linkers.
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Affiliation(s)
- Yu Seon Kim
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, Texas 77030, United States
| | - Jason L Guo
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, Texas 77030, United States
| | - Johnny Lam
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, Texas 77030, United States
| | - K Jane Grande-Allen
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, Texas 77030, United States
| | - Paul S Engel
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, Texas 77030, United States
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67
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Guo B, Ma Z, Pan L, Shi Y. Properties of conductive polymer hydrogels and their application in sensors. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/polb.24899] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Bin Guo
- Collaborative Innovation Center of Advanced Microstructures, Jiangsu Provincial Key Laboratory of Photonic and Electronic Materials, School of Electronic Science and EngineeringNanjing University Nanjing Jiangsu 210093 China
| | - Zhong Ma
- Collaborative Innovation Center of Advanced Microstructures, Jiangsu Provincial Key Laboratory of Photonic and Electronic Materials, School of Electronic Science and EngineeringNanjing University Nanjing Jiangsu 210093 China
| | - Lijia Pan
- Collaborative Innovation Center of Advanced Microstructures, Jiangsu Provincial Key Laboratory of Photonic and Electronic Materials, School of Electronic Science and EngineeringNanjing University Nanjing Jiangsu 210093 China
| | - Yi Shi
- Collaborative Innovation Center of Advanced Microstructures, Jiangsu Provincial Key Laboratory of Photonic and Electronic Materials, School of Electronic Science and EngineeringNanjing University Nanjing Jiangsu 210093 China
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68
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Guo JL, Kim YS, Mikos AG. Biomacromolecules for Tissue Engineering: Emerging Biomimetic Strategies. Biomacromolecules 2019; 20:2904-2912. [PMID: 31282658 DOI: 10.1021/acs.biomac.9b00792] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Biomacromolecules used for tissue engineering must possess either inherent biochemical cues for tissue regeneration or be chemically modified to incorporate bioactive, tissue-specific moieties. To this end, many strategies have emerged recently in the field to both utilize novel bioinspired macromolecules for tissue engineering and apply bioconjugation strategies for the functionalization of biomacromolecules with tissue-specific cues and other biological properties of interest. Furthermore, biomacromolecules have been processed into more highly biomimetic and clinically deliverable scaffold and hydrogel systems using 3D printing and the fabrication of in situ forming hydrogels, respectively. To support these advances, tissue engineers have also pursued greater spatiotemporal control over macromolecular bioactivity and the modulation of scaffold and hydrogel properties in response to both physiological and external stimuli. This Perspective thus highlights a few notable advances and techniques in the usage of biomacromolecules for tissue engineering applications, including new bioinspired macromolecules, advanced hydrogel and scaffold fabrication techniques, and spatiotemporal control over biomacromolecule constructs.
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Affiliation(s)
- Jason L Guo
- Department of Bioengineering , Rice University , 6500 Main Street , Houston , Texas 77030 , United States
| | - Yu Seon Kim
- Department of Bioengineering , Rice University , 6500 Main Street , Houston , Texas 77030 , United States
| | - Antonios G Mikos
- Department of Bioengineering , Rice University , 6500 Main Street , Houston , Texas 77030 , United States
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