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Lau K, Reichheld S, Xian M, Sharpe SJ, Cerruti M. Directed Assembly of Elastic Fibers via Coacervate Droplet Deposition on Electrospun Templates. Biomacromolecules 2024; 25:3519-3531. [PMID: 38742604 DOI: 10.1021/acs.biomac.4c00180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Elastic fibers provide critical elasticity to the arteries, lungs, and other organs. Elastic fiber assembly is a process where soluble tropoelastin is coacervated into liquid droplets, cross-linked, and deposited onto and into microfibrils. While much progress has been made in understanding the biology of this process, questions remain regarding the timing of interactions during assembly. Furthermore, it is unclear to what extent fibrous templates are needed to guide coacervate droplets into the correct architecture. The organization and shaping of coacervate droplets onto a fiber template have never been previously modeled or employed as a strategy for shaping elastin fiber materials. Using an in vitro system consisting of elastin-like polypeptides (ELPs), genipin cross-linker, electrospun polylactic-co-glycolic acid (PLGA) fibers, and tannic acid surface coatings for fibers, we explored ELP coacervation, cross-linking, and deposition onto fiber templates. We demonstrate that integration of coacervate droplets into a fibrous template is primarily influenced by two factors: (1) the balance of coacervation and cross-linking and (2) the surface energy of the fiber templates. The success of this integration affects the mechanical properties of the final fiber network. Our resulting membrane materials exhibit highly tunable morphologies and a range of elastic moduli (0.8-1.6 MPa) comparable to native elastic fibers.
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Affiliation(s)
- Kirklann Lau
- Department of Mining and Materials Engineering, McGill University, 3610 University Street, Wong Building 2250, Montreal, Quebec H3A 0C5, Canada
| | - Sean Reichheld
- Molecular Medicine, Hospital for Sick Children, Peter Gilgan Center for Research and Learning, 686 Bay Street, Room 20.9714, Toronto, Ontario M5G 1X8, Canada
| | - Mingqian Xian
- Department of Mining and Materials Engineering, McGill University, 3610 University Street, Wong Building 2250, Montreal, Quebec H3A 0C5, Canada
| | - Simon J Sharpe
- Molecular Medicine, Hospital for Sick Children, Peter Gilgan Center for Research and Learning, 686 Bay Street, Room 20.9714, Toronto, Ontario M5G 1X8, Canada
- Department of Biochemistry, University of Toronto, 1 King's College Circle, Medical Sciences Building, Room 5207, Toronto, Ontario M5S 1A8, Canada
| | - Marta Cerruti
- Department of Mining and Materials Engineering, McGill University, 3610 University Street, Wong Building 2250, Montreal, Quebec H3A 0C5, Canada
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Puertas-Bartolomé M, Venegas-Bustos D, Acosta S, Rodríguez-Cabello JC. Contribution of the ELRs to the development of advanced in vitro models. Front Bioeng Biotechnol 2024; 12:1363865. [PMID: 38650751 PMCID: PMC11033926 DOI: 10.3389/fbioe.2024.1363865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Accepted: 03/18/2024] [Indexed: 04/25/2024] Open
Abstract
Developing in vitro models that accurately mimic the microenvironment of biological structures or processes holds substantial promise for gaining insights into specific biological functions. In the field of tissue engineering and regenerative medicine, in vitro models able to capture the precise structural, topographical, and functional complexity of living tissues, prove to be valuable tools for comprehending disease mechanisms, assessing drug responses, and serving as alternatives or complements to animal testing. The choice of the right biomaterial and fabrication technique for the development of these in vitro models plays an important role in their functionality. In this sense, elastin-like recombinamers (ELRs) have emerged as an important tool for the fabrication of in vitro models overcoming the challenges encountered in natural and synthetic materials due to their intrinsic properties, such as phase transition behavior, tunable biological properties, viscoelasticity, and easy processability. In this review article, we will delve into the use of ELRs for molecular models of intrinsically disordered proteins (IDPs), as well as for the development of in vitro 3D models for regenerative medicine. The easy processability of the ELRs and their rational design has allowed their use for the development of spheroids and organoids, or bioinks for 3D bioprinting. Thus, incorporating ELRs into the toolkit of biomaterials used for the fabrication of in vitro models, represents a transformative step forward in improving the accuracy, efficiency, and functionality of these models, and opening up a wide range of possibilities in combination with advanced biofabrication techniques that remains to be explored.
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Affiliation(s)
- María Puertas-Bartolomé
- Technical Proteins Nanobiotechnology, S.L. (TPNBT), Valladolid, Spain
- Bioforge Lab (Group for Advanced Materials and Nanobiotechnology), CIBER's Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Edificio LUCIA, Universidad de Valladolid, Valladolid, Spain
| | - Desiré Venegas-Bustos
- Bioforge Lab (Group for Advanced Materials and Nanobiotechnology), CIBER's Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Edificio LUCIA, Universidad de Valladolid, Valladolid, Spain
| | - Sergio Acosta
- Bioforge Lab (Group for Advanced Materials and Nanobiotechnology), CIBER's Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Edificio LUCIA, Universidad de Valladolid, Valladolid, Spain
| | - José Carlos Rodríguez-Cabello
- Bioforge Lab (Group for Advanced Materials and Nanobiotechnology), CIBER's Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Edificio LUCIA, Universidad de Valladolid, Valladolid, Spain
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3
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de Paiva Narciso N, Navarro RS, Gilchrist A, Trigo MLM, Rodriguez GA, Heilshorn SC. Design Parameters for Injectable Biopolymeric Hydrogels with Dynamic Covalent Chemistry Crosslinks. Adv Healthc Mater 2023; 12:e2301265. [PMID: 37389811 PMCID: PMC10638947 DOI: 10.1002/adhm.202301265] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/28/2023] [Accepted: 06/29/2023] [Indexed: 07/01/2023]
Abstract
Dynamic covalent chemistry (DCC) crosslinks can form hydrogels with tunable mechanical properties permissive to injectability and self-healing. However, not all hydrogels with transient crosslinks are easily extrudable. For this reason, two additional design parameters must be considered when formulating DCC-crosslinked hydrogels: 1) degree of functionalization (DoF) and 2) polymer molecular weight (MW). To investigate these parameters, hydrogels comprised of two recombinant biopolymers: 1) a hyaluronic acid (HA) modified with benzaldehyde and 2) an elastin-like protein (ELP) modified with hydrazine (ELP-HYD), are formulated. Several hydrogel families are synthesized with distinct HA MW and DoF while keeping the ELP-HYD component constant. The resulting hydrogels have a range of stiffnesses, G' ≈ 10-1000 Pa, and extrudability, which is attributed to the combined effects of DCC crosslinks and polymer entanglements. In general, lower MW formulations require lower forces for injectability, regardless of stiffness. Higher DoF formulations exhibit more rapid self-healing. Gel extrusion through a cannula (2 m length, 0.25 mm diameter) demonstrates the potential for minimally invasive delivery for future biomedical applications. In summary, this work highlights additional parameters that influence the injectability and network formation of DCC-crosslinked hydrogels and aims to guide future design of injectable hydrogels.
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Affiliation(s)
| | - Renato S. Navarro
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
| | - Aidan Gilchrist
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
| | - Miriam L. M. Trigo
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
| | | | - Sarah C. Heilshorn
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
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4
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Shayan M, Huang MS, Navarro R, Chiang G, Hu C, Oropeza BP, Johansson PK, Suhar RA, Foster AA, LeSavage BL, Zamani M, Enejder A, Roth JG, Heilshorn SC, Huang NF. Elastin-like protein hydrogels with controllable stress relaxation rate and stiffness modulate endothelial cell function. J Biomed Mater Res A 2023; 111:896-909. [PMID: 36861665 PMCID: PMC10159914 DOI: 10.1002/jbm.a.37520] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 01/26/2023] [Accepted: 02/15/2023] [Indexed: 03/03/2023]
Abstract
Mechanical cues from the extracellular matrix (ECM) regulate vascular endothelial cell (EC) morphology and function. Since naturally derived ECMs are viscoelastic, cells respond to viscoelastic matrices that exhibit stress relaxation, in which a cell-applied force results in matrix remodeling. To decouple the effects of stress relaxation rate from substrate stiffness on EC behavior, we engineered elastin-like protein (ELP) hydrogels in which dynamic covalent chemistry (DCC) was used to crosslink hydrazine-modified ELP (ELP-HYD) and aldehyde/benzaldehyde-modified polyethylene glycol (PEG-ALD/PEG-BZA). The reversible DCC crosslinks in ELP-PEG hydrogels create a matrix with independently tunable stiffness and stress relaxation rate. By formulating fast-relaxing or slow-relaxing hydrogels with a range of stiffness (500-3300 Pa), we examined the effect of these mechanical properties on EC spreading, proliferation, vascular sprouting, and vascularization. The results show that both stress relaxation rate and stiffness modulate endothelial spreading on two-dimensional substrates, on which ECs exhibited greater cell spreading on fast-relaxing hydrogels up through 3 days, compared with slow-relaxing hydrogels at the same stiffness. In three-dimensional hydrogels encapsulating ECs and fibroblasts in coculture, the fast-relaxing, low-stiffness hydrogels produced the widest vascular sprouts, a measure of vessel maturity. This finding was validated in a murine subcutaneous implantation model, in which the fast-relaxing, low-stiffness hydrogel produced significantly more vascularization compared with the slow-relaxing, low-stiffness hydrogel. Together, these results suggest that both stress relaxation rate and stiffness modulate endothelial behavior, and that the fast-relaxing, low-stiffness hydrogels supported the highest capillary density in vivo.
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Affiliation(s)
- Mahdis Shayan
- Department of Cardiothoracic Surgery, Stanford University, Palo Alto, CA, USA
- The Stanford Cardiovascular Institute, Stanford University, Palo Alto, CA, USA
| | - Michelle S. Huang
- Department of Chemical Engineering, Stanford University, Palo Alto, CA, USA
| | - Renato Navarro
- Department of Materials Science & Engineering, Stanford University, Palo Alto, CA, USA
| | - Gladys Chiang
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Caroline Hu
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Beu P. Oropeza
- Department of Cardiothoracic Surgery, Stanford University, Palo Alto, CA, USA
- The Stanford Cardiovascular Institute, Stanford University, Palo Alto, CA, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Patrik K. Johansson
- Geballe Laboratory for Advanced Materials, Stanford University, Palo Alto, CA, USA
| | - Riley A. Suhar
- Department of Materials Science & Engineering, Stanford University, Palo Alto, CA, USA
| | - Abbygail A. Foster
- Department of Materials Science & Engineering, Stanford University, Palo Alto, CA, USA
| | - Bauer L. LeSavage
- Department of Bioengineering, Stanford University, Palo Alto, CA, USA
| | - Maedeh Zamani
- Department of Cardiothoracic Surgery, Stanford University, Palo Alto, CA, USA
- The Stanford Cardiovascular Institute, Stanford University, Palo Alto, CA, USA
| | - Annika Enejder
- Geballe Laboratory for Advanced Materials, Stanford University, Palo Alto, CA, USA
| | - Julien G. Roth
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Sarah C. Heilshorn
- The Stanford Cardiovascular Institute, Stanford University, Palo Alto, CA, USA
- Department of Chemical Engineering, Stanford University, Palo Alto, CA, USA
- Department of Materials Science & Engineering, Stanford University, Palo Alto, CA, USA
- Geballe Laboratory for Advanced Materials, Stanford University, Palo Alto, CA, USA
| | - Ngan F. Huang
- Department of Cardiothoracic Surgery, Stanford University, Palo Alto, CA, USA
- The Stanford Cardiovascular Institute, Stanford University, Palo Alto, CA, USA
- Department of Chemical Engineering, Stanford University, Palo Alto, CA, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
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5
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Luo J, Zhao X, Guo B, Han Y. Preparation, thermal response mechanisms and biomedical applications of thermosensitive hydrogels for drug delivery. Expert Opin Drug Deliv 2023; 20:641-672. [PMID: 37218585 DOI: 10.1080/17425247.2023.2217377] [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: 02/28/2023] [Accepted: 05/19/2023] [Indexed: 05/24/2023]
Abstract
INTRODUCTION Drug treatment is one of the main ways of coping with disease today. For the disadvantages of drug management, thermosensitive hydrogel is used as a countermeasure, which can realize the simple sustained release of drugs and the controlled release of drugs in complex physiological environments. AREAS COVERED This paper talks about thermosensitive hydrogels that can be used as drug carriers. The common preparation materials, material forms, thermal response mechanisms, characteristics of thermosensitive hydrogels for drug release and main disease treatment applications are reviewed. EXPERT OPINION When thermosensitive hydrogels are used as drug loading and delivery platforms, desired drug release patterns and release profiles can be tailored by selecting raw materials, thermal response mechanisms, and material forms. The properties of hydrogels prepared from synthetic polymers will be more stable than natural polymers. Integrating multiple thermosensitive mechanisms or different kinds of thermosensitive mechanisms on the same hydrogel is expected to realize the spatiotemporal differential delivery of multiple drugs under temperature stimulation. The industrial transformation of thermosensitive hydrogels as drug delivery platforms needs to meet some important conditions.
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Affiliation(s)
- Jinlong Luo
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Xin Zhao
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Baolin Guo
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
- Department of Orthopaedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Yong Han
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
- Department of Orthopaedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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6
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Tang Y, Wang H, Liu S, Pu L, Hu X, Ding J, Xu G, Xu W, Xiang S, Yuan Z. A review of protein hydrogels: Protein assembly mechanisms, properties, and biological applications. Colloids Surf B Biointerfaces 2022. [DOI: 10.1016/j.colsurfb.2022.112973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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7
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Xiong Y, Wang L, Xu W, Li L, Tang Y, Shi C, Li X, Niu Y, Sun C, Ren C. Electrostatic induced peptide hydrogel containing PHMB for sustained antibacterial activity. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Hossain MS, Zhang Z, Ashok S, Jenks AR, Lynch CJ, Hougland JL, Mozhdehi D. Temperature-Responsive Nano-Biomaterials from Genetically Encoded Farnesylated Disordered Proteins. ACS APPLIED BIO MATERIALS 2022; 5:1846-1856. [PMID: 35044146 PMCID: PMC9115796 DOI: 10.1021/acsabm.1c01162] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 01/06/2022] [Indexed: 11/30/2022]
Abstract
Despite broad interest in understanding the biological implications of protein farnesylation in regulating different facets of cell biology, the use of this post-translational modification to develop protein-based materials and therapies remains underexplored. The progress has been slow due to the lack of accessible methodologies to generate farnesylated proteins with broad physicochemical diversities rapidly. This limitation, in turn, has hindered the empirical elucidation of farnesylated proteins' sequence-structure-function rules. To address this gap, we genetically engineered prokaryotes to develop operationally simple, high-yield biosynthetic routes to produce farnesylated proteins and revealed determinants of their emergent material properties (nano-aggregation and phase-behavior) using scattering, calorimetry, and microscopy. These outcomes foster the development of farnesylated proteins as recombinant therapeutics or biomaterials with molecularly programmable assembly.
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Affiliation(s)
- Md. Shahadat Hossain
- Department
of Chemistry, Syracuse University, Syracuse, New York 13244, United States
| | - Zhe Zhang
- Department
of Chemistry, Syracuse University, Syracuse, New York 13244, United States
| | - Sudhat Ashok
- Department
of Chemistry, Syracuse University, Syracuse, New York 13244, United States
| | - Ashley R. Jenks
- Department
of Chemistry, Syracuse University, Syracuse, New York 13244, United States
| | - Christopher J. Lynch
- Department
of Chemistry, Syracuse University, Syracuse, New York 13244, United States
| | - James L. Hougland
- Department
of Chemistry, Syracuse University, Syracuse, New York 13244, United States
- Department
of Biology, Syracuse University, Syracuse, New York 13244, United States
- BioInspired
Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, New York 13244, United States
| | - Davoud Mozhdehi
- Department
of Chemistry, Syracuse University, Syracuse, New York 13244, United States
- Department
of Biology, Syracuse University, Syracuse, New York 13244, United States
- Department
of Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
- BioInspired
Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, New York 13244, United States
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9
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Affiliation(s)
| | - Brian R. James
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada
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10
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Leveraging polyetheramine-bisepoxide reaction in water and LCST-mediated phase separation toward microstructured poly(amino alcohol ethers) hydrogels. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Lau K, Reichheld S, Sharpe S, Cerruti M. Globule and fiber formation with elastin-like polypeptides: a balance of coacervation and crosslinking. SOFT MATTER 2022; 18:3257-3266. [PMID: 35404375 DOI: 10.1039/d2sm00049k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Elastic fiber assembly is a complex process that requires the coacervation and cross-linking of the protein building block tropoelastin. To date, the order, timing, and interplay of coacervation and crosslinking is not completely understood, despite a great number of advances into understanding the molecular structure and functions of the many proteins involved in elastic fiber assembly. With a simple in vitro model using elastin-like polypeptides and the natural chemical crosslinker genipin, we demonstrate the strong influence of the timing and kinetics of crosslinking reaction on the coacervation, crosslinking extent, and resulting morphology of elastin. We also outline a method for analyzing elastin droplet network formation as a heuristic for measuring the propensity for elastic fiber formation. From this we show that adding crosslinker during peak coacervation dramatically increases the propensity for droplet network formation.
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Affiliation(s)
- Kirklann Lau
- Department of Materials Engineering, McGill University, 3610 University Street Wong Building, 2250 Montreal, QC H3A 2B2, Canada.
| | - Sean Reichheld
- Molecular Medicine, Hospital for Sick Children, Peter Gilgan Center for Research and Learning, 686 Bay St., Room 20.9714, Toronto, ON M5G 1X8, Canada.
| | - Simon Sharpe
- Molecular Medicine, Hospital for Sick Children, Peter Gilgan Center for Research and Learning, 686 Bay St., Room 20.9714, Toronto, ON M5G 1X8, Canada.
| | - Marta Cerruti
- Department of Materials Engineering, McGill University, 3610 University Street Wong Building, 2250 Montreal, QC H3A 2B2, Canada.
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Navarro RS, Huang MS, Roth JG, Hubka KM, Long CM, Enejder A, Heilshorn SC. Tuning Polymer Hydrophilicity to Regulate Gel Mechanics and Encapsulated Cell Morphology. Adv Healthc Mater 2022; 11:e2200011. [PMID: 35373510 DOI: 10.1002/adhm.202200011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 03/20/2022] [Indexed: 12/20/2022]
Abstract
Mechanically tunable hydrogels are attractive platforms for 3D cell culture, as hydrogel stiffness plays an important role in cell behavior. Traditionally, hydrogel stiffness has been controlled through altering either the polymer concentration or the stoichiometry between crosslinker reactive groups. Here, an alternative strategy based upon tuning the hydrophilicity of an elastin-like protein (ELP) is presented. ELPs undergo a phase transition that leads to protein aggregation at increasing temperatures. It is hypothesized that increasing this transition temperature through bioconjugation with azide-containing molecules of increasing hydrophilicity will allow direct control of the resulting gel stiffness by making the crosslinking groups more accessible. These azide-modified ELPs are crosslinked into hydrogels with bicyclononyne-modified hyaluronic acid (HA-BCN) using bioorthogonal, click chemistry, resulting in hydrogels with tunable storage moduli (100-1000 Pa). Human mesenchymal stromal cells (hMSCs), human umbilical vein endothelial cells (HUVECs), and human neural progenitor cells (hNPCs) are all observed to alter their cell morphology when encapsulated within hydrogels of varying stiffness. Taken together, the use of protein hydrophilicity as a lever to tune hydrogel mechanical properties is demonstrated. These hydrogels have tunable moduli over a stiffness range relevant to soft tissues, support the viability of encapsulated cells, and modify cell spreading as a consequence of gel stiffness.
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Affiliation(s)
- Renato S. Navarro
- Department of Materials Science and Engineering Stanford University Stanford CA 94305 USA
| | - Michelle S. Huang
- Department of Chemical Engineering Stanford University Stanford CA 94305 USA
| | - Julien G. Roth
- Institute for Stem Cell Biology and Regenerative Medicine Stanford University School of Medicine Stanford CA 94305 USA
| | - Kelsea M. Hubka
- Maternal and Child Health Research Institute Stanford University School of Medicine Stanford CA 94305 USA
| | - Chris M. Long
- Department of Materials Science and Engineering Stanford University Stanford CA 94305 USA
| | - Annika Enejder
- Department of Materials Science and Engineering Stanford University Stanford CA 94305 USA
| | - Sarah C. Heilshorn
- Department of Materials Science and Engineering Stanford University Stanford CA 94305 USA
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13
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Xiang Y, Zhang J, Mao H, Yan Z, Wang X, Bao C, Zhu L. Highly Tough, Stretchable, and Enzymatically Degradable Hydrogels Modulated by Bioinspired Hydrophobic β-Sheet Peptides. Biomacromolecules 2021; 22:4846-4856. [PMID: 34706536 DOI: 10.1021/acs.biomac.1c01134] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Peptide-based supramolecular hydrogels have attracted great attention due to their good biocompatibility and biodegradability and have become promising candidates for biomedical applications. The bottom-up self-assembly endows the peptides with a highly ordered secondary structure, which has proven to be an effective strategy to improve the mechanical properties of hydrogels through strong physical interactions and energy dissipation. Inspired by the excellent mechanical properties of spider-silk, which can be attributed to the rich β-sheet crystal formation by the hydrophobic peptide fragment, a hydrophobic peptide (HP) that can form a β-sheet assembly was designed and introduced into a poly(vinyl alcohol) (PVA) scaffold to improve mechanical properties of hydrogels by the cooperative intermolecular physical interactions. Compared with hydrogels without peptide grafting (P-HP0), the strong β-sheet self-assembly domain endows the hybrid hydrogels (P-HP20, P-HP29, and P-HP37) with high strength and toughness. The fracture tensile strength increased from 0.3 to 2.1 MPa (7 times), the toughness increased from 0.4 to 21.6 MJ m-3 (54 times), and the compressive strength increased from 0.33 to 10.43 MPa (31 times) at 75% strain. Moreover, the hybrid hydrogels are enzymatically degradable due to the dominant contribution of the β-sheet assembly for network cross-linking. Combining the good biocompatibility and sustained drug release of the constructed hydrogels, this hydrophobic β-sheet peptide represents a promising candidate for the rational design of hydrogels for biomedical applications.
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Affiliation(s)
- Yanxin Xiang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiali Zhang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Huanv Mao
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zexin Yan
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xuebin Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Chunyan Bao
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Linyong Zhu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
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14
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Mulorz J, Shayan M, Hu C, Alcazar C, Chan AHP, Briggs M, Wen Y, Walvekar AP, Ramasubramanian AK, Spin JM, Chen B, Tsao PS, Huang NF. peri-Adventitial delivery of smooth muscle cells in porous collagen scaffolds for treatment of experimental abdominal aortic aneurysm. Biomater Sci 2021; 9:6903-6914. [PMID: 34522940 PMCID: PMC8511090 DOI: 10.1039/d1bm00685a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Abdominal aortic aneurysm (AAA) is associated with the loss of vascular smooth muscle cells (SMCs) within the vessel wall. Direct delivery of therapeutic cells is challenging due to impaired mechanical integrity of the vessel wall. We hypothesized that porous collagen scaffolds can be an effective vehicle for the delivery of human-derived SMCs to the site of AAA. The purpose was to evaluate if the delivery of cell-seeded scaffolds can abrogate progressive expansion in a mouse model of AAA. Collagen scaffolds seeded with either primary human aortic SMCs or induced pluripotent stem cell derived-smooth muscle progenitor cells (iPSC-SMPs) had >80% in vitro cell viability and >75% cell penetrance through the scaffold's depth, while preserving smooth muscle phenotype. The cell-seeded scaffolds were successfully transplanted onto the murine aneurysm peri-adventitia on day 7 following AAA induction using pancreatic porcine elastase infusion. Ultrasound imaging revealed that SMC-seeded scaffolds significantly reduced the aortic diameter by 28 days, compared to scaffolds seeded with iPSC-SMPs or without cells (acellular scaffold), respectively. Bioluminescence imaging demonstrated that both cell-seeded scaffold groups had cellular localization to the aneurysm but a decline in survival with time. Histological analysis revealed that both cell-seeded scaffold groups had more SMC retention and less macrophage invasion into the medial layer of AAA lesions, when compared to the acellular scaffold treatment group. Our data suggest that scaffold-based SMC delivery is feasible and may constitute a platform for cell-based AAA therapy.
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Affiliation(s)
- Joscha Mulorz
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, USA
- Department of Vascular and Endovascular Surgery, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University, Düsseldorf, Germany
- Stanford Cardiovascular Institute, Stanford University, Stanford, CA, USA
| | - Mahdis Shayan
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
- Stanford Cardiovascular Institute, Stanford University, Stanford, CA, USA
- Department Cardiothoracic Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Caroline Hu
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
| | - Cynthia Alcazar
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
| | - Alex H P Chan
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
- Stanford Cardiovascular Institute, Stanford University, Stanford, CA, USA
- Department Cardiothoracic Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Mason Briggs
- Stanford University School of Medicine, Department of Obstetrics and Gynecology, Stanford, CA, USA
| | - Yan Wen
- Stanford University School of Medicine, Department of Obstetrics and Gynecology, Stanford, CA, USA
| | - Ankita P Walvekar
- Department of Chemical and Materials Engineering, San Jose State University, San Jose, CA, USA
| | - Anand K Ramasubramanian
- Department of Chemical and Materials Engineering, San Jose State University, San Jose, CA, USA
| | - Joshua M Spin
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, USA
- Stanford Cardiovascular Institute, Stanford University, Stanford, CA, USA
| | - Bertha Chen
- Stanford University School of Medicine, Department of Obstetrics and Gynecology, Stanford, CA, USA
| | - Philip S Tsao
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, USA
- Stanford Cardiovascular Institute, Stanford University, Stanford, CA, USA
| | - Ngan F Huang
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
- Stanford Cardiovascular Institute, Stanford University, Stanford, CA, USA
- Department Cardiothoracic Surgery, Stanford University School of Medicine, Stanford, CA, USA
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15
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Juanes-Gusano D, Santos M, Reboto V, Alonso M, Rodríguez-Cabello JC. Self-assembling systems comprising intrinsically disordered protein polymers like elastin-like recombinamers. J Pept Sci 2021; 28:e3362. [PMID: 34545666 DOI: 10.1002/psc.3362] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 07/02/2021] [Accepted: 07/13/2021] [Indexed: 12/19/2022]
Abstract
Despite lacking cooperatively folded structures under native conditions, numerous intrinsically disordered proteins (IDPs) nevertheless have great functional importance. These IDPs are hybrids containing both ordered and intrinsically disordered protein regions (IDPRs), the structure of which is highly flexible in this unfolded state. The conformational flexibility of these disordered systems favors transitions between disordered and ordered states triggered by intrinsic and extrinsic factors, folding into different dynamic molecular assemblies to enable proper protein functions. Indeed, prokaryotic enzymes present less disorder than eukaryotic enzymes, thus showing that this disorder is related to functional and structural complexity. Protein-based polymers that mimic these IDPs include the so-called elastin-like polypeptides (ELPs), which are inspired by the composition of natural elastin. Elastin-like recombinamers (ELRs) are ELPs produced using recombinant techniques and which can therefore be tailored for a specific application. One of the most widely used and studied characteristic structures in this field is the pentapeptide (VPGXG)n . The structural disorder in ELRs probably arises due to the high content of proline and glycine in the ELR backbone, because both these amino acids help to keep the polypeptide structure of elastomers disordered and hydrated. Moreover, the recombinant nature of these systems means that different sequences can be designed, including bioactive domains, to obtain specific structures for each application. Some of these structures, along with their applications as IDPs that self-assemble into functional vesicles or micelles from diblock copolymer ELRs, will be studied in the following sections. The incorporation of additional order- and disorder-promoting peptide/protein domains, such as α-helical coils or β-strands, in the ELR sequence, and their influence on self-assembly, will also be reviewed. In addition, chemically cross-linked systems with controllable order-disorder balance, and their role in biomineralization, will be discussed. Finally, we will review different multivalent IDPs-based coatings and films for different biomedical applications, such as spatially controlled cell adhesion, osseointegration, or biomaterial-associated infection (BAI).
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Affiliation(s)
- Diana Juanes-Gusano
- BIOFORGE (Group for Advanced Materials and Nanobiotechnology) CIBER-BBN, Edificio Lucía, University of Valladolid, Valladolid, Spain
| | - Mercedes Santos
- BIOFORGE (Group for Advanced Materials and Nanobiotechnology) CIBER-BBN, Edificio Lucía, University of Valladolid, Valladolid, Spain
| | - Virginia Reboto
- BIOFORGE (Group for Advanced Materials and Nanobiotechnology) CIBER-BBN, Edificio Lucía, University of Valladolid, Valladolid, Spain
| | - Matilde Alonso
- BIOFORGE (Group for Advanced Materials and Nanobiotechnology) CIBER-BBN, Edificio Lucía, University of Valladolid, Valladolid, Spain
| | - José Carlos Rodríguez-Cabello
- BIOFORGE (Group for Advanced Materials and Nanobiotechnology) CIBER-BBN, Edificio Lucía, University of Valladolid, Valladolid, Spain
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16
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Wang B, Patkar SS, Kiick KL. Application of Thermoresponsive Intrinsically Disordered Protein Polymers in Nanostructured and Microstructured Materials. Macromol Biosci 2021; 21:e2100129. [PMID: 34145967 PMCID: PMC8449816 DOI: 10.1002/mabi.202100129] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/25/2021] [Indexed: 01/15/2023]
Abstract
Modulation of inter- and intramolecular interactions between bioinspired designer molecules can be harnessed for developing functional structures that mimic the complex hierarchical organization of multicomponent assemblies observed in nature. Furthermore, such multistimuli-responsive molecules offer orthogonal tunability for generating versatile multifunctional platforms via independent biochemical and biophysical cues. In this review, the remarkable physicochemical and mechanical properties of genetically engineered protein polymers derived from intrinsically disordered proteins, specifically elastin and resilin, are discussed. This review highlights emerging technologies which use them as building blocks in the fabrication of highly programmable structured biomaterials for applications in delivery of biotherapeutic cargo and regenerative medicine.
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Affiliation(s)
- Bin Wang
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, DE, 19716, USA
| | - Sai S Patkar
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, DE, 19716, USA
| | - Kristi L Kiick
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, DE, 19716, USA
- Department of Biomedical Engineering, University of Delaware, 161 Colburn Laboratory, Newark, DE, 19716, USA
- Delaware Biotechnology Institute, Ammon Pinizzotto Biopharmaceutical Innovation Center, 590 Avenue 1743, Newark, DE, 19713, USA
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17
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Babi J, Zhu L, Lin A, Uva A, El‐Haddad H, Peloewetse A, Tran H. Self‐assembled free‐floating
nanomaterials from
sequence‐defined
polymers. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jon Babi
- Department of Chemistry University of Toronto Toronto Ontario Canada
| | - Linglan Zhu
- Department of Chemistry University of Toronto Toronto Ontario Canada
| | - Angela Lin
- Department of Chemistry University of Toronto Toronto Ontario Canada
| | - Azalea Uva
- Department of Chemistry University of Toronto Toronto Ontario Canada
| | - Hana El‐Haddad
- Department of Chemistry University of Toronto Toronto Ontario Canada
| | - Atang Peloewetse
- Department of Chemistry University of Toronto Toronto Ontario Canada
| | - Helen Tran
- Department of Chemistry University of Toronto Toronto Ontario Canada
- Department of Chemical Engineering University of Toronto Toronto Ontario Canada
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18
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Garcia Garcia C, Patkar SS, Jovic N, Mittal J, Kiick KL. Alteration of Microstructure in Biopolymeric Hydrogels via Compositional Modification of Resilin-Like Polypeptides. ACS Biomater Sci Eng 2021; 7:4244-4257. [DOI: 10.1021/acsbiomaterials.0c01543] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Cristobal Garcia Garcia
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Sai S. Patkar
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Nina Jovic
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Jeetain Mittal
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Kristi L. Kiick
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
- Delaware Biotechnology Institute, Newark, Delaware 19716, United States
- Biomedical Engineering, University of Delaware, Newark, Delaware 19176, United States
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19
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Ibáñez-Fonseca A, Orbanic D, Arias FJ, Alonso M, Zeugolis DI, Rodríguez-Cabello JC. Influence of the Thermodynamic and Kinetic Control of Self-Assembly on the Microstructure Evolution of Silk-Elastin-Like Recombinamer Hydrogels. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001244. [PMID: 32519515 DOI: 10.1002/smll.202001244] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/25/2020] [Indexed: 06/11/2023]
Abstract
Complex recombinant biomaterials that merge the self-assembling properties of different (poly)peptides provide a powerful tool for the achievement of specific structures, such as hydrogel networks, by tuning the thermodynamics and kinetics of the system through a tailored molecular design. In this work, elastin-like (EL) and silk-like (SL) polypeptides are combined to obtain a silk-elastin-like recombinamer (SELR) with dual self-assembly. First, EL domains force the molecule to undergo a phase transition above a precise temperature, which is driven by entropy and occurs very fast. Then, SL motifs interact through the slow formation of β-sheets, stabilized by H-bonds, creating an energy barrier that opposes phase separation. Both events lead to the development of a dynamic microstructure that evolves over time (until a pore size of 49.9 ± 12.7 µm) and to a delayed hydrogel formation (obtained after 2.6 h). Eventually, the network is arrested due to an increase in β-sheet secondary structures (up to 71.8 ± 0.8%) within SL motifs. This gives a high bond strength that prevents the complete segregation of the SELR from water, which results in a fixed metastable microarchitecture. These porous hydrogels are preliminarily tested as biomimetic niches for the isolation of cells in 3D cultures.
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Affiliation(s)
- Arturo Ibáñez-Fonseca
- BIOFORGE Lab, University of Valladolid - CIBER-BBN. Paseo de Belén 19, Valladolid, 47011, Spain
| | - Doriana Orbanic
- BIOFORGE Lab, University of Valladolid - CIBER-BBN. Paseo de Belén 19, Valladolid, 47011, Spain
| | - Francisco Javier Arias
- BIOFORGE Lab, University of Valladolid - CIBER-BBN. Paseo de Belén 19, Valladolid, 47011, Spain
| | - Matilde Alonso
- BIOFORGE Lab, University of Valladolid - CIBER-BBN. Paseo de Belén 19, Valladolid, 47011, Spain
| | - Dimitrios I Zeugolis
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, H91 TK33, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, H91 TK33, Ireland
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20
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Li B, Chen T, Wang Z, Guo Z, Peña J, Zeng L, Xing J. A novel cross-linked nanoparticle with aggregation-induced emission properties for cancer cell imaging. J Mater Chem B 2020; 8:2431-2437. [PMID: 32104870 DOI: 10.1039/c9tb02701g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Fluorescent probes have been widely used in bioimaging as an efficient and convenient analytical tool. From the initial inorganic nanoparticles and small organic molecules to polymeric nanoparticles, scientific researchers have been trying to develop a probe with strong fluorescence and excellent biocompatibility. In this study, a tetraphenylethylene derivative with AIE properties and hyaluronic acid modified by methacrylic anhydride were combined to prepare a novel nanoparticle (HA-Ac-Pha-C) as a fluorescent probe by a photochemical cross-linking reaction. The fluorescence intensity and size of the nanoparticles were characterized by different techniques. It was confirmed that cross-linked nanoparticles not only showed stronger fluorescence, but also had better photostability while still maintaining 85.9% of the initial intensity after seven days. Moreover, cells and zebrafish imaging experiments also demonstrated that nanoparticles show specific fluorescence labeling for cancer cells and excellent biocompatibility in living organisms.
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Affiliation(s)
- Bin Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China.
| | - Tianhong Chen
- School of Chemistry and Chemical Engineering, Tianjin University of Technology, 300384, China
| | - Zhipeng Wang
- Tianjin Institute of Metrological Supervision and Testing, 300192, China
| | - Zhiming Guo
- Tianjin Institute of Metrological Supervision and Testing, 300192, China
| | - Jhair Peña
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China.
| | - Lintao Zeng
- School of Chemistry and Chemical Engineering, Tianjin University of Technology, 300384, China and College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.
| | - Jinfeng Xing
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China.
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21
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Hollingshead S, Liu JC. pH-Sensitive Mechanical Properties of Elastin-Based Hydrogels. Macromol Biosci 2020; 20:e1900369. [PMID: 32090483 DOI: 10.1002/mabi.201900369] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 01/23/2020] [Indexed: 01/23/2023]
Abstract
Ionizable amino acids in protein-based hydrogels can confer pH-responsive behavior. Because elastin-like polypeptides (ELPs) have an established sequence and can crosslink to form hydrogels, they are an ideal system for creating pH-sensitive materials. This study examines different parameters that might affect pH-sensitive behavior and characterizes the mechanical and physical properties between pH 3 and 11 of three ELP-based crosslinked hydrogels. The first finding is that varying the amount of crosslinker affects the overall stiffness and resilience of the hydrogels but does not strongly affect water content, swelling ratio, or pH sensitivity. Second, the choice of two popular tag sequences, which vary in histidine and aspartic acid content, does not have a strong effect on pH-sensitive properties. Last, selectively blocking lysine and tyrosine residues through acetylation significantly decreases the pH-sensitive zeta potential. Acetylated hydrogels also demonstrate different behavior at low pH values with reduced swelling, reduced water content, and higher stiffness. Overall, this work demonstrates that ELP hydrogels with ionizable groups are promising materials for environmentally-responsive applications such as drug delivery, tissue engineering, and microfluidics.
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Affiliation(s)
- Sydney Hollingshead
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, 47907-2100, USA
| | - Julie C Liu
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, 47907-2100, USA.,Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907-2032, USA
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22
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Okesola BO, Lau HK, Derkus B, Boccorh DK, Wu Y, Wark AW, Kiick KL, Mata A. Covalent co-assembly between resilin-like polypeptide and peptide amphiphile into hydrogels with controlled nanostructure and improved mechanical properties. Biomater Sci 2020; 8:846-857. [PMID: 31793933 PMCID: PMC7482191 DOI: 10.1039/c9bm01796h] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
Covalent co-assembly holds great promise for the fabrication of hydrogels with controllable nanostructure, versatile chemical composition, and enhanced mechanical properties given its relative simplicity, high efficiency, and bond stability. This report describes our approach to designing functional multicomponent hydrogels based on photo-induced chemical interactions between an acrylamide-functionalized resilin-like polypeptide (RLP) and a peptide amphiphile (PA). Circular dichroism (CD) spectroscopy, electron microscopy, and amplitude sweep rheology were used to demonstrate that the co-assembled hydrogel systems acquired distinct structural conformations, tunable nanostructures, and enhanced elasticity in a PA concentration-dependent manner. We envisage the use of these materials in numerous biomedical applications such as controlled drug release systems, microfluidic devices, and scaffolds for tissue engineering.
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Affiliation(s)
- Babatunde O. Okesola
- Institute of Bioengineering, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom, UK
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
| | - Hang Kuen Lau
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, DE 19716, USA
| | - Burak Derkus
- Institute of Bioengineering, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom, UK
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
- Biomedical Engineering Department, Eskisehir Osmangazi University, Eskisehir, TR 26040, Turkey
| | - Delali K. Boccorh
- Centre for Molecular Nanometrology, Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, UK
| | - Yuanhao Wu
- Institute of Bioengineering, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom, UK
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
| | - Alastair W. Wark
- Centre for Molecular Nanometrology, Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, UK
| | - Kristi L. Kiick
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, DE 19716, USA
| | - Alvaro Mata
- Institute of Bioengineering, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom, UK
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
- School of Pharmacy, University of Nottingham, NG7 2RD, Nottingham, UK
- Department of Chemical and Environmental Engineering, University of Nottingham, NG7 2RD, Nottingham, UK
- Institute for BioDiscovery, University of Nottingham, NG7 2RD, Nottingham, UK
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23
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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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24
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Han WM, Jang YC, García AJ. The Extracellular Matrix and Cell–Biomaterial Interactions. Biomater Sci 2020. [DOI: 10.1016/b978-0-12-816137-1.00045-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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Adibnia V, Mirbagheri M, Latreille PL, Faivre J, Cécyre B, Robert J, Bouchard JF, Martinez VA, Delair T, David L, Hwang DK, Banquy X. Chitosan hydrogel micro-bio-devices with complex capillary patterns via reactive-diffusive self-assembly. Acta Biomater 2019; 99:211-219. [PMID: 31473363 DOI: 10.1016/j.actbio.2019.08.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 08/19/2019] [Accepted: 08/21/2019] [Indexed: 02/07/2023]
Abstract
We present chitosan hydrogel microfluidic devices with self-assembled complex microcapillary patterns, conveniently formed by a diffusion-reaction process. These patterns in chitosan hydrogels are formed by a single-step procedure involving diffusion of a gelation agent into the polymer solution inside a microfluidic channel. By changing the channel geometry, it is demonstrated how to control capillary length, trajectory and branching. Diffusion of nanoparticles (NPs) in the capillary network is used as a model to effectively mimic the transport of nano-objects in vascularized tissues. Gold NPs diffusion is measured locally in the hydrogel chips, and during their two-step transport through the capillaries to the gel matrix and eventually to embedded cell clusters in the gel. In addition, the quantitative analyses reported in this study provide novel opportunities for theoretical investigation of capillary formation and propagation during diffusive gelation of biopolymers. STATEMENT OF SIGNIFICANCE: Hydrogel micropatterning is a challenging task, which is of interest in several biomedical applications. Creating the patterns through self assembly is highly beneficial, because of the accessible and practical preparation procedure. In this study, we introduced complex self-assembled capillary patterns in chitosan hydrogels using a microfluidic approach. To demonstrate the potential application of these capillary patterns, a vascularized hydrogel with microwells occupied by cells was produced, and the diffusion of gold nanoparticles travelling in the capillaries and diffusing in the gel were evaluated. This model mimics a simplified biological tissue, where nanomedicine has to travel through the vasculature, extravasate into and diffuse through the extracellular matrix and eventually reach targeted cells.
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26
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Kan A, Joshi NS. Towards the directed evolution of protein materials. MRS COMMUNICATIONS 2019; 9:441-455. [PMID: 31750012 PMCID: PMC6867688 DOI: 10.1557/mrc.2019.28] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 02/22/2019] [Indexed: 05/06/2023]
Abstract
Protein-based materials have emerged as a powerful instrument for a new generation of biological materials, with many chemical and mechanical capabilities. Through the manipulation of DNA, researchers can design proteins at the molecular level, engineering a vast array of structural building blocks. However, our capability to rationally design and predict the properties of such materials is limited by the vastness of possible sequence space. Directed evolution has emerged as a powerful tool to improve biological systems through mutation and selection, presenting another avenue to produce novel protein materials. In this prospective review, we discuss the application of directed evolution for protein materials, reviewing current examples and developments that could facilitate the evolution of protein for material applications.
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Affiliation(s)
- Anton Kan
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, United States
| | - Neel S. Joshi
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, United States
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, United States
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27
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Garcia Garcia C, Kiick KL. Methods for producing microstructured hydrogels for targeted applications in biology. Acta Biomater 2019; 84:34-48. [PMID: 30465923 PMCID: PMC6326863 DOI: 10.1016/j.actbio.2018.11.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 11/12/2018] [Accepted: 11/19/2018] [Indexed: 12/29/2022]
Abstract
Hydrogels have been broadly studied for applications in clinically motivated fields such as tissue regeneration, drug delivery, and wound healing, as well as in a wide variety of consumer and industry uses. While the control of mechanical properties and network structures are important in all of these applications, for regenerative medicine applications in particular, matching the chemical, topographical and mechanical properties for the target use/tissue is critical. There have been multiple alternatives developed for fabricating materials with microstructures with goals of controlling the spatial location, phenotypic evolution, and signaling of cells. The commonly employed polymers such as poly(ethylene glycol) (PEG), polypeptides, and polysaccharides (as well as others) can be processed by various methods in order to control material heterogeneity and microscale structures. We review here the more commonly used polymers, chemistries, and methods for generating microstructures in biomaterials, highlighting the range of possible morphologies that can be produced, and the limitations of each method. With a focus in liquid-liquid phase separation, methods and chemistries well suited for stabilizing the interface and arresting the phase separation are covered. As the microstructures can affect cell behavior, examples of such effects are reviewed as well. STATEMENT OF SIGNIFICANCE: Heterogeneous hydrogels with enhanced matrix complexity have been studied for a variety of biomimetic materials. A range of materials based on poly(ethylene glycol), polypeptides, proteins, and/or polysaccharides, have been employed in the studies of materials that by virtue of their microstructure, can control the behaviors of cells. Methods including microfluidics, photolithography, gelation in the presence of porogens, and liquid-liquid phase separation, are presented as possible strategies for producing materials, and their relative advantages and disadvantages are discussed. We also describe in more detail the various processes involved in LLPS, and how they can be manipulated to alter the kinetics of phase separation and to yield different microstructured materials.
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Affiliation(s)
- Cristobal Garcia Garcia
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | - Kristi L Kiick
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA; Biomedical Engineering, University of Delaware, Newark, DE 19176, USA; Delaware Biotechnology Institute, Newark, DE 19716, USA
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28
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Cao M, Shen Y, Wang Y, Wang X, Li D. Self-Assembly of Short Elastin-like Amphiphilic Peptides: Effects of Temperature, Molecular Hydrophobicity and Charge Distribution. Molecules 2019; 24:E202. [PMID: 30625991 PMCID: PMC6337584 DOI: 10.3390/molecules24010202] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 12/31/2018] [Accepted: 01/07/2019] [Indexed: 11/21/2022] Open
Abstract
A novel type of self-assembling peptides has been developed by introducing the basic elastomeric β-turn units of elastin protein into the amphiphilic peptide molecules. The self-assembly behaviors of such peptides are affected by the overall molecular hydrophobicity, charge distribution and temperature. The molecules with higher hydrophobicity exhibit better self-assembling capability to form long fibrillar nanostructures. For some peptides, the temperature increase can not only promote the self-assembly process but also change the self-assembly routes. The self-assembly of the peptides with two charges centralized on one terminal show higher dependence on temperature than the peptides with two charges distributed separately on the two terminals. The study probes into the self-assembly behaviors of short elastin-like peptides and is of great help for developing novel self-assembling peptides with thermo sensitivity.
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Affiliation(s)
- Meiwen Cao
- State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao Economic Development Zone, Qingdao 266580, China.
| | - Yang Shen
- State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao Economic Development Zone, Qingdao 266580, China.
| | - Yu Wang
- State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao Economic Development Zone, Qingdao 266580, China.
| | - Xiaoling Wang
- Personnel Department and School of Blue Economy Engineering, Qingdao Vocational and Technical College, Qingdao Economic and Technological Development Zone, Qingdao 266555, China.
| | - Dongxiang Li
- Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
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Mozhdehi D, Luginbuhl KM, Dzuricky M, Costa SA, Xiong S, Huang FC, Lewis MM, Zelenetz SR, Colby CD, Chilkoti A. Genetically Encoded Cholesterol-Modified Polypeptides. J Am Chem Soc 2019; 141:945-951. [PMID: 30608674 DOI: 10.1021/jacs.8b10687] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Biological systems use post-translational modifications (PTMs) to control the structure, location, and function of proteins after expression. Despite the ubiquity of PTMs in biology, their use to create genetically encoded recombinant biomaterials is limited. We have utilized a natural lipidation PTM (hedgehog-mediated cholesterol modification of proteins) to create a class of hybrid biomaterials called cholesterol-modified polypeptides (CHaMPs) that exhibit programmable self-assembly at the nanoscale. To demonstrate the biomedical utility of CHaMPs, we used this approach to append cholesterol to biologically active peptide exendin-4 that is an approved drug for the treatment of type II diabetes. The exendin-cholesterol conjugate self-assembled into micelles, and these micelles activate the glucagon-like peptide-1 receptor with a potency comparable to that of current gold standard treatments.
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Affiliation(s)
- Davoud Mozhdehi
- Department of Biomedical Engineering , Duke University , 1427 FCIEMAS , Box 90281, Durham , North Carolina 27708-0281 , United States
| | - Kelli M Luginbuhl
- Department of Biomedical Engineering , Duke University , 1427 FCIEMAS , Box 90281, Durham , North Carolina 27708-0281 , United States
| | - Michael Dzuricky
- Department of Biomedical Engineering , Duke University , 1427 FCIEMAS , Box 90281, Durham , North Carolina 27708-0281 , United States
| | - Simone A Costa
- Department of Biomedical Engineering , Duke University , 1427 FCIEMAS , Box 90281, Durham , North Carolina 27708-0281 , United States
| | - Sinan Xiong
- Department of Biomedical Engineering , Duke University , 1427 FCIEMAS , Box 90281, Durham , North Carolina 27708-0281 , United States
| | - Fred C Huang
- Department of Biomedical Engineering , Duke University , 1427 FCIEMAS , Box 90281, Durham , North Carolina 27708-0281 , United States
| | - Mae M Lewis
- Department of Biomedical Engineering , Duke University , 1427 FCIEMAS , Box 90281, Durham , North Carolina 27708-0281 , United States
| | - Stephanie R Zelenetz
- Department of Biomedical Engineering , Duke University , 1427 FCIEMAS , Box 90281, Durham , North Carolina 27708-0281 , United States
| | - Christian D Colby
- Department of Biomedical Engineering , Duke University , 1427 FCIEMAS , Box 90281, Durham , North Carolina 27708-0281 , United States
| | - Ashutosh Chilkoti
- Department of Biomedical Engineering , Duke University , 1427 FCIEMAS , Box 90281, Durham , North Carolina 27708-0281 , United States
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30
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Chen YN, Jiao C, Zhao Y, Zhang J, Wang H. Self-Assembled Polyvinyl Alcohol-Tannic Acid Hydrogels with Diverse Microstructures and Good Mechanical Properties. ACS OMEGA 2018; 3:11788-11795. [PMID: 31459270 PMCID: PMC6645311 DOI: 10.1021/acsomega.8b02041] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 09/10/2018] [Indexed: 05/30/2023]
Abstract
Fabrication of hydrogels with unique microstructures and better mechanical properties through the self-assembly of commercially available synthetic polymers and small molecules is of great scientific and practical importance. A type of physical hydrogels is prepared by the self-assembly of polyvinyl alcohol (PVA) and tannic acid (TA) in aqueous solution with a low PVA-TA concentration (0.5-6.0 wt %) at room temperature. With the increase of the PVA-TA concentration, the water content of the hydrogels increases, and the content of TA in the hydrogels decreases from 23.1 to 6.4%. The driving force for the self-assembly is proven to be the hydrogen bonding between PVA and TA, which also induces the crystallization of PVA chains. The self-assembled PVA-TA hydrogels have diverse morphologies that change from microspheres to oriented porous structures with the increase of the PVA-TA concentration, and these structures are all composed of nanosized particles, fibers, and/or sheets. Most of the self-assembled PVA-TA hydrogels show good mechanical properties. The highest tensile strength and elastic modulus of the PVA-TA hydrogel prepared with 1.0 wt % PVA-TA concentration are about 84 and 30 kPa, respectively. This self-assembly method would lead to the fabrication of more hydrogels with unique microstructures and properties for practical applications.
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Affiliation(s)
- Ya-Nan Chen
- Beijing Key Laboratory of Energy Conversion
and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Chen Jiao
- Beijing Key Laboratory of Energy Conversion
and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Yaxin Zhao
- Beijing Key Laboratory of Energy Conversion
and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Jianan Zhang
- Beijing Key Laboratory of Energy Conversion
and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Huiliang Wang
- Beijing Key Laboratory of Energy Conversion
and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
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