1
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Levin M, Tang Y, Eisenbach CD, Valentine MT, Cohen N. Understanding the Response of Poly(ethylene glycol) diacrylate (PEGDA) Hydrogel Networks: A Statistical Mechanics-Based Framework. Macromolecules 2024; 57:7074-7086. [PMID: 39156193 PMCID: PMC11325651 DOI: 10.1021/acs.macromol.3c02635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 05/31/2024] [Accepted: 06/28/2024] [Indexed: 08/20/2024]
Abstract
Thanks to many promising properties, including biocompatibility and the ability to experience large deformations, poly(ethylene glycol) diacrylate (PEGDA) hydrogels are excellent candidate materials for a wide range of applications. Interestingly, the polymerization of PEGDA leads to a network microstructure that is fundamentally different from that of the "classic" polymeric gels. Specifically, PEGDA hydrogels comprise PEG chains that are interconnected by multifunctional densely grafted rod-like polyacrylates (PAs), which serve as cross-linkers. In this work, we derive a microstructurally motivated model that captures the essential features which enable deformation in PEGDA hydrogels: (1) entropic elasticity of PEG chains, (2) deformation of PA rods, and (3) PA-PA interactions. Expressions for the energy-density functions and the stress associated with each of the three contributions are derived. The model demonstrates the microstructural evolution of the network during loading and reveals the role of key microscopic quantities. To validate the model, we fabricate and compress PEGDA hydrogel discs. The model is in excellent agreement with our experimental findings for a broad range of PEGDA compositions. Interestingly, we show that the response of PEGDA hydrogels with short PEG chains and long PA rods is governed by PA-PA interactions, whereas networks with longer PEG chains are dominated by entropy. To enable design, we employ the model to investigate the influence of key microstructural quantities, such as the length of the PEG and the PA chains, on the macroscopic properties and response. The findings from this work pave the way to the efficient design of PEGDA hydrogels with tunable properties and behaviors, which will enable the optimization of their performance in various applications.
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Affiliation(s)
- Michal Levin
- Department
of Materials Science and Engineering, Technion
- Israel Institute of Technology, Haifa 3200003, Israel
| | - Yongkui Tang
- Department
of Mechanical Engineering, University of
California, Santa
Barbara, California 93106, United States
- Materials
Research Laboratory, University of California, Santa Barbara, California 93106, United States
| | - Claus D. Eisenbach
- Materials
Research Laboratory, University of California, Santa Barbara, California 93106, United States
- Institut
for Polymerchemie, University of Stuttgart, Stuttgart D-70569, Germany
| | - Megan T. Valentine
- Department
of Mechanical Engineering, University of
California, Santa
Barbara, California 93106, United States
- Materials
Research Laboratory, University of California, Santa Barbara, California 93106, United States
| | - Noy Cohen
- Department
of Materials Science and Engineering, Technion
- Israel Institute of Technology, Haifa 3200003, Israel
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2
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Singh K, Wychowaniec JK, Edwards-Gayle CJC, Reynaud EG, Rodriguez BJ, Brougham DF. Structure-dynamics correlations in composite PF127-PEG-based hydrogels; cohesive/hydrophobic interactions determine phase and rheology and identify the role of micelle concentration in controlling 3D extrusion printability. J Colloid Interface Sci 2024; 660:302-313. [PMID: 38244497 DOI: 10.1016/j.jcis.2023.12.151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 12/19/2023] [Accepted: 12/26/2023] [Indexed: 01/22/2024]
Abstract
A library of composite polymer networks (CPNs) were formed by combining Pluronic F127, as the primary gelator, with a range of di-acrylate functionalised PEG polymers, which tune the rheological properties and provide UV crosslinkability. A coarse-grained sol-gel room temperature phase diagram was constructed for the CPN library, which identifies PEG-dependent disruption of micelles as leading to liquefication. Small angle X-ray scattering and rheological measurements provide detailed insight into; (i) micelle-micelle ordering; (ii) micelle-micelle disruption, and; (iii) acrylate-micelle disruption; with contributions that depend on composition, including weak PEG chain length and end group effects. The influence of composition on 3D extrusion printability through modulation of the cohesive/hydrophobic interactions was assessed. It was found that only micelle content provides consistent changes in printing fidelity, controlled largely by printing conditions (pressure and feed rate). Finally, the hydrogels were shown to be UV photo-crosslinkable, which further improves fidelity and structural integrity, and usefully reduces the mesh size. Our results provide a guide for design of 3D-printable CPN inks for future biomedical applications.
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Affiliation(s)
- Krutika Singh
- School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Jacek K Wychowaniec
- School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland; AO Research Institute Davos, Clavadelerstrasse 8, 7270, Davos, Switzerland.
| | | | - Emmanuel G Reynaud
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - Brian J Rodriguez
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland; School of Physics, University College Dublin, Belfield, Dublin 4, Ireland
| | - Dermot F Brougham
- School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland.
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3
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Rashid H, Lucas H, Busse K, Kressler J, Mäder K, Trutschel ML. Development of Poly(sorbitol adipate)- g-poly(ethylene glycol) Mono Methyl Ether-Based Hydrogel Matrices for Model Drug Release. Gels 2023; 10:17. [PMID: 38247740 PMCID: PMC10815636 DOI: 10.3390/gels10010017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 12/19/2023] [Accepted: 12/19/2023] [Indexed: 01/23/2024] Open
Abstract
Hydrogels were prepared by Steglich esterification and by crosslinking pre-synthesized poly(sorbitol adipate)-graft-poly(ethylene glycol) mono methyl ether (PSA-g-mPEG) using different-chain-length-based disuccinyl PEG. PSA and PSA-g-mPEG were investigated for polymer degradation as a function of time at different temperatures. PSA-g-mPEG hydrogels were then evaluated for their most crucial properties of swelling that rendered them suitable for many pharmaceutical and biomedical applications. Hydrogels were also examined for their Sol-Gel content in order to investigate the degree of cross-linking. Physical structural parameters of the hydrogels were theoretically estimated using the modified Flory-Rehner theory to obtain approximate values of polymer volume fraction, the molecular weight between two crosslinks, and the mesh size of the hydrogels. X-ray diffraction was conducted to detect the presence or absence of crystalline regions in the hydrogels. PSA-g-mPEG hydrogels were then extensively examined for higher and lower molecular weight solute release through analysis by fluorescence spectroscopy. Finally, the cytotoxicity of the hydrogels was also investigated using a resazurin reduction assay. Experimental results show that PSA-g-mPEG provides an option as a biocompatible polymer to be used for pharmaceutical applications.
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Affiliation(s)
- Haroon Rashid
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| | - Henrike Lucas
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| | - Karsten Busse
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| | - Jörg Kressler
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| | - Karsten Mäder
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| | - Marie-Luise Trutschel
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
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4
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Manghnani PN, Schenck L, Khan SA, Doyle PS. Templated Reactive Crystallization of Active Pharmaceutical Ingredient in Hydrogel Microparticles Enabling Robust Drug Product Processing. J Pharm Sci 2023; 112:2115-2123. [PMID: 37160228 DOI: 10.1016/j.xphs.2023.05.004] [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: 02/21/2023] [Revised: 05/04/2023] [Accepted: 05/04/2023] [Indexed: 05/11/2023]
Abstract
Commercialization of most promising active pharmaceutical ingredients (APIs) is impeded either by poor bioavailability or challenging physical properties leading to costly manufacture. Bioavailability of ionizable hydrophobic APIs can be enhanced by its conversion to salt form. While salt form of the API presents higher solution concentration than the non-ionized form, poor physical properties resulting from particle anisotropy or non-ideal morphology (needles) and particle size distribution not meeting dissolution rate targets can still inhibit its commercial translation. In this regard, API physical properties can be improved through addition of non-active components (excipients or carriers) during API manufacture. In this work, a facile method to perform reactive crystallization of an API salt in presence of the microporous environment of a hydrogel microparticle is presented. Specifically, the reaction between acidic antiretroviral API, raltegravir and base potassium hydroxide is performed in the presence of polyethylene glycol diacrylamide hydrogel microparticles. In this bottom-up approach, the spherical template hydrogel microparticles for the reaction lead to monodisperse composites loaded with inherently micronized raltegravir-potassium crystals, thus improving API physical properties without hampering bioavailability. Overall, this technique provides a novel approach to reactive crystallization while maintaining the API polymorph and crystallinity.
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Affiliation(s)
- Purnima N Manghnani
- Singapore-MIT Alliance for Research and Technology, 1 CREATE Way, #04-13/14 Enterprise Wing 138602, Singapore
| | - Luke Schenck
- Process Research and Development, Merck & Co., Inc., 126 E. Lincoln Ave Rahway NJ 07065, USA
| | - Saif A Khan
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore; Singapore-MIT Alliance for Research and Technology, 1 CREATE Way, #04-13/14 Enterprise Wing 138602, Singapore.
| | - Patrick S Doyle
- Singapore-MIT Alliance for Research and Technology, 1 CREATE Way, #04-13/14 Enterprise Wing 138602, Singapore; Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue Room E17-504F, Cambridge, MA, 02139 USA; Harvard Medical School Initiative for RNA Medicine, Boston, MA, 02115 USA.
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5
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S Grewal M, Ishibashi K, Hara M, Ishizaki Y, Nagano S, Yabu H. Effect of the Poly(ethylene glycol) Diacrylate (PEGDA) Molecular Weight on Ionic Conductivities in Solvent-Free Photo-Cross-Linked Solid Polymer Electrolytes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:10209-10215. [PMID: 37436760 DOI: 10.1021/acs.langmuir.3c01146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
Abstract
To obtain safe, high-performance Li-ion batteries, the development of electrolytes with high impact resistance and high ionic conductivity is important. Ionic conductivity at room temperature has been improved by using poly(ethylene glycol) (PEG) diacrylate (PEGDA) to form three-dimensional (3D) networks and solvated ionic liquids. However, the effects of the molecular weight of PEGDA on ionic conductivities and the relationship between ionic conductivities and network structures of cross-linked polymer electrolytes have not been discussed in detail. In this study, the dependence of the ionic conductivity of photo-cross-linked PEG solid electrolytes on the molecular weight of the PEGDA was evaluated. X-ray scattering (XRS) gave detailed information about the dimensions of 3D networks formed by the photo-cross-linking of PEGDA, and the effects of the network structures on the ionic conductivities were discussed.
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Affiliation(s)
- Manjit S Grewal
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai 980-8577, Japan
| | - Kosuke Ishibashi
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai 980-8577, Japan
| | - Mitsuo Hara
- Graduate School of Engineering, Nagoya University, Furocho, Chikusa-Ku, Nagoya 464-8603, Japan
| | - Yuya Ishizaki
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - Shusaku Nagano
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - Hiroshi Yabu
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai 980-8577, Japan
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6
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Li Z, Yong H, Wang K, Zhou YN, Lyu J, Liang L, Zhou D. (Controlled) Free radical (co)polymerization of multivinyl monomers: strategies, topological structures and biomedical applications. Chem Commun (Camb) 2023; 59:4142-4157. [PMID: 36919482 DOI: 10.1039/d3cc00250k] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
Free radical (co)polymerization (FRP/FRcP) of multivinyl monomers (MVMs) has emerged as a powerful strategy for the synthesis of chemically and topologically complex polymers due to its unique reaction kinetics, which enables the preparation of polymers with multiple functional groups and novel macromolecular structures. However, conventional FRP/FRcP of MVMs inevitably leads to insoluble crosslinked materials. Therefore, the development of advanced strategies for the controlled polymerization of MVMs is essential for the preparation of chemically and topologically complex polymers. In this review, we introduce the gelation mechanism of conventional FRP of MVMs and present the strategies of controlled polymerization of MVMs for the preparation of chemically and topologically complex polymers. We also discuss polymers with unique topologies synthesized by controlled polymerization of MVMs, such as crosslinked networks, (hyper)branched, star, cyclic, and single-chain cyclized/knotted structures. Finally, biomedical applications of various advanced polymeric materials prepared by controlled polymerization of MVMs are highlighted and the challenges is this field are discussed.
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Affiliation(s)
- Zhili Li
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Haiyang Yong
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Kaixuan Wang
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Ya-Nan Zhou
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Jing Lyu
- Charles Institute of Dermatology, School of Medicine, University College Dublin, Dublin 4, Ireland.
| | - Lirong Liang
- Department of Clinical Epidemiology, Beijing Institute of Respiratory Medicine and Beijing Chao Yang Hospital, Capital Medical University, Beijing, 100020, China.
| | - Dezhong Zhou
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
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7
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Majcher MJ, Himbert S, Vito F, Campea MA, Dave R, Vetergaard Jensen G, Rheinstadter MC, Smeets NMB, Hoare T. Investigating the Kinetics and Structure of Network Formation in Ultraviolet-Photopolymerizable Starch Nanogel Network Hydrogels via Very Small-Angle Neutron Scattering and Small-Amplitude Oscillatory Shear Rheology. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael J. Majcher
- Department of Chemical Engineering, McMaster University, 1280 Main St. W., Hamilton, Ontario L8S 4L8, Canada
| | - Sebastian Himbert
- Department of Physics & Astronomy, McMaster University, 1280 Main St. W., Hamilton, Ontario L8S 4L8, Canada
| | - Francesco Vito
- Department of Chemical Engineering, McMaster University, 1280 Main St. W., Hamilton, Ontario L8S 4L8, Canada
| | - Matthew A. Campea
- Department of Chemical Engineering, McMaster University, 1280 Main St. W., Hamilton, Ontario L8S 4L8, Canada
| | - Ridhdhi Dave
- Department of Chemical Engineering, McMaster University, 1280 Main St. W., Hamilton, Ontario L8S 4L8, Canada
| | - Grethe Vetergaard Jensen
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6100, United States
| | - Maikel C. Rheinstadter
- Department of Physics & Astronomy, McMaster University, 1280 Main St. W., Hamilton, Ontario L8S 4L8, Canada
| | - Niels M. B. Smeets
- Department of Chemical Engineering, McMaster University, 1280 Main St. W., Hamilton, Ontario L8S 4L8, Canada
| | - Todd Hoare
- Department of Chemical Engineering, McMaster University, 1280 Main St. W., Hamilton, Ontario L8S 4L8, Canada
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8
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Davenport MN, Bentley CL, Brennecke JF, Freeman BD. Ethylene and ethane transport properties of hydrogen-stable Ag+-based facilitated transport membranes. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Mithra K, Jena SS. Surfactant head group and concentration influence on structure and dynamics of gellan gum hydrogels: Crossover from stretched to compressed exponential. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- K Mithra
- Department of Physics and Astronomy National Institute of Technology Rourkela Odisha India
| | - Sidhartha S Jena
- Department of Physics and Astronomy National Institute of Technology Rourkela Odisha India
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10
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Alonso JM, Andrade del Olmo J, Perez Gonzalez R, Saez-Martinez V. Injectable Hydrogels: From Laboratory to Industrialization. Polymers (Basel) 2021; 13:650. [PMID: 33671648 PMCID: PMC7926321 DOI: 10.3390/polym13040650] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/16/2021] [Accepted: 02/19/2021] [Indexed: 01/07/2023] Open
Abstract
The transfer of some innovative technologies from the laboratory to industrial scale is many times not taken into account in the design and development of some functional materials such as hydrogels to be applied in the biomedical field. There is a lack of knowledge in the scientific field where many aspects of scaling to an industrial process are ignored, and products cannot reach the market. Injectable hydrogels are a good example that we have used in our research to show the different steps needed to follow to get a product in the market based on them. From synthesis and process validation to characterization techniques used and assays performed to ensure the safety and efficacy of the product, following regulation, several well-defined protocols must be adopted. Therefore, this paper summarized all these aspects due to the lack of knowledge that exists about the industrialization of injectable products with the great importance that it entails, and it is intended to serve as a guide on this area to non-initiated scientists. More concretely, in this work, the characteristics and requirements for the development of injectable hydrogels from the laboratory to industrial scale is presented in terms of (i) synthesis techniques employed to obtain injectable hydrogels with tunable desired properties, (ii) the most common characterization techniques to characterize hydrogels, and (iii) the necessary safety and efficacy assays and protocols to industrialize and commercialize injectable hydrogels from the regulatory point of view. Finally, this review also mentioned and explained a real example of the development of a natural hyaluronic acid hydrogel that reached the market as an injectable product.
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Affiliation(s)
- Jose Maria Alonso
- I+Med. S. Coop., Parque Tecnológico de Alava. Albert Einstein 15, Nave 15, 01510 Vitoria-Gasteiz, Spain; (J.A.d.O.); (R.P.G.); (V.S.-M.)
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11
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Maire du Poset A, Börjesson M, Rameau C, Madeleine-Perdrillat C, Lerbret A, Loupiac C, Cousin F, Assifaoui A. Controlled Loading and Release of Beta-Lactoglobulin in Calcium-Polygalacturonate Hydrogels. Biomacromolecules 2020; 21:1417-1426. [PMID: 32109357 DOI: 10.1021/acs.biomac.9b01722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We show here how the structure of polygalacturonate (polyGalA) hydrogels cross-linked by Ca2+ cations via external gelation controls the loading and release rate of beta-lactoglobulin (BLG), a globular protein. Hydrogels prepared from a polyGalA/BLG solution are found to be similar to those obtained from a polyGalA solution in our previous study (Maire du Poset et al. Biomacromolecules 2019, 20 (7), 2864-2872): they exhibit similar transparencies and gradients of mechanical properties and polyGalA concentrations. The nominal BLG/polyGalA ratio of the mixtures is almost recovered within the whole mixed hydrogel despite such strong concentration gradients, except in the part of the hydrogels with the largest mesh size, where more BLG proteins are present. This gradient enables one to tune the amount of protein loaded within the hydrogel. At a local scale, the proteins are distributed evenly within the hydrogel network, as shown by small-angle neutron scattering (SANS). The release of proteins from hydrogels is driven by Fickian diffusion, and the release rate increases with the mesh size of the network, with a characteristic time of a few hours. The specific structure of these polysaccharide-based hydrogels allows for control of both the dosage and the release rate of the loaded protein and makes them good candidates for use as oral controlled-delivery systems.
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Affiliation(s)
- Aline Maire du Poset
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France.,Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France.,Synchrotron SOLEIL, L'Orme des Merisiers, BP 48 St Aubin, 91192 Gif-sur-Yvette, France
| | - Mikaela Börjesson
- Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France.,Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 10, SE-412 96 Göteborg, Sweden
| | - Céline Rameau
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France
| | | | - Adrien Lerbret
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France
| | - Camille Loupiac
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France.,Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France
| | - Fabrice Cousin
- Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France
| | - Ali Assifaoui
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France
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12
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Bandara SR, Molley TG, Kim H, Bharath PA, Kilian KA, Leal C. The structural fate of lipid nanoparticles in the extracellular matrix. MATERIALS HORIZONS 2020; 7:125-134. [PMID: 31942243 PMCID: PMC6961836 DOI: 10.1039/c9mh00835g] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Drug-loaded liposomes are the most successful nanomedicine to date, with multiple FDA-approved systems for a myriad of diseases. While liposome circulation time in blood and retention in tissues have been studied in detail, the structural fate of liposomes-and nanoparticles in general-in the body has not been extensively investigated. Here, we explore the interactions of liposomes with synthetic and natural hydrogel materials to understand how the natural extracellular matrix influences liposome structural characteristics. Small angle X-ray scattering, confocal microscopy, and cryogenic transmission electron microscopy data demonstrate that poly(ethylene glycol) (PEG), gelatin, alginate, and Matrigel® hydrogels cause 200-nm liposomes of 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) to transform into micrometer-sized aggregates. These aggregates are composed of multilamellar vesicles around 100 nm in diameter with a mean interlamellar separation of 5.5 nm. Protecting the liposomes with a corona of PEG damps this restructuring effect, making the multilamellar vesicles less stable. We attribute this unilamellar to multilamellar transition to an osmotic driving force from the hydrogel environment. This lipid restructuring has broad ramifications in the design and use of nanomedicines, and in understanding the fate and function of natural lipid-based materials within the tissue microenvironment.
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Affiliation(s)
- Sarith R. Bandara
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Thomas G. Molley
- School of Chemistry, School of Materials Science and Engineering, Australian Centre for Nanomedicine, University of New South Wales, Sydney NSW 2052, Australia
| | - Hojun Kim
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Priyalini A. Bharath
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Kristopher A. Kilian
- School of Chemistry, School of Materials Science and Engineering, Australian Centre for Nanomedicine, University of New South Wales, Sydney NSW 2052, Australia
| | - Cecilia Leal
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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13
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Çolak A, Li B, Blass J, Koynov K, Del Campo A, Bennewitz R. The mechanics of single cross-links which mediate cell attachment at a hydrogel surface. NANOSCALE 2019; 11:11596-11604. [PMID: 31169854 DOI: 10.1039/c9nr01784d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The response of cultured cells to the mechanical properties of hydrogel substrates depends ultimately on the response of single crosslinks to external forces exerted at cell attachment points. We prepared hydrogels by co-polymerization of poly(ethylene glycol diacrylate) (PEGDA) and carboxy poly(ethylene glycol) acrylate (ACPEG-COOH) and confirmed fibroblast spreading on the hydrogel after the ACPEG linker was functionalized with the RGD cell adhesive motif. We performed specific force spectroscopy experiments on the same ACPEG linkers in order to probe the mechanics of single cross-links which mediate the cell attachment and spreading. Measurements were performed with tips of an atomic force microscope (AFM) functionalized with streptavidin and ACPEG linkers functionalized with biotin. We compared hydrogels of varying elastic modulus between 4 and 41 kPa which exhibited significant differences in cell spreading. An effective spring constant for the displacement of single cross-links at the hydrogel surface was derived from the distributions of rupture force and molecular stiffness. A factor of ten in the elastic modulus E of the hydrogel corresponded to a factor of five in the effective spring constant k of single crosslinks, indicating a transition in scaling with the mesh size ξ from the macroscopic E∝ξ-3 to the molecular k∝ξ-2. The quantification of stiffness and deformation at the molecular length scale contributes to the discussion of mechanisms in force-regulated phenomena in cell biology.
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Affiliation(s)
- Arzu Çolak
- INM - Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany.
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14
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Wu L, Ferracci G, Wang Y, Fan TF, Cho NJ, Chow PKH. Porcine hepatocytes culture on biofunctionalized 3D inverted colloidal crystal scaffolds as an in vitro model for predicting drug hepatotoxicity. RSC Adv 2019; 9:17995-18007. [PMID: 35520590 PMCID: PMC9064660 DOI: 10.1039/c9ra03225h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 05/27/2019] [Indexed: 01/03/2023] Open
Abstract
As drug-induced hepatotoxicity represents one of the most common causes of drug failure, three-dimensional (3D) in vitro liver platforms represent a fantastic toolbox to predict drug toxicity and thus reduce in vivo animal studies and lessen drug attrition rates. The aim of this study is to establish a functional porcine hepatocyte culture using a biofunctionalized 3D inverted colloidal crystal (ICC) hydrogel platform. The performances of non-adhesive bare poly(ethylene glycol)diacrylate (PEGDA) ICCs and PEGDA ICCs coated with either collagen type I or fibronectin have been investigated. Porcine hepatocytes viability, morphology, hepatic-specific functions and patterns of gene expression have been evaluated over a period of two weeks in culture to test diclofenac, a well-known hepatotoxic drug. Interestingly, cells in the fibronectin-functionalized scaffold exhibit different aggregation patterns and maintain better liver-specific function than those in bare ICCs and in collagen functionalized scaffold. We concluded that the 3D cell culture environment and the presence of extracellular matrix (ECM) proteins, especially fibronectin, facilitate hepatocyte viability and maintenance of the liver-specific phenotype in vitro, and enable us to predict hepatotoxicity. As drug-induced hepatotoxicity represents one of the most common causes of drug failure, three-dimensional in vitro liver platforms represent a fantastic toolbox to predict drug toxicity and reduce in vivo studies and drug attrition rates.![]()
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Affiliation(s)
- Lingyan Wu
- Division of Surgical Oncology, National Cancer Centre Singapore 11 Hospital Drive 169610 Singapore
| | - Gaia Ferracci
- Interdisciplinary Graduate School, NTU Institute for Health Technologies, Nanyang Technological University 50 Nanyang Drive 637553 Singapore.,School of Materials Science and Engineering, Nanyang Technological University 50 Nanyang Avenue 639798 Singapore .,Centre for Biomimetic Sensor Science, Nanyang Technological University 50 Nanyang Drive 637553 Singapore
| | - Yan Wang
- School of Materials Science and Engineering, Nanyang Technological University 50 Nanyang Avenue 639798 Singapore .,Centre for Biomimetic Sensor Science, Nanyang Technological University 50 Nanyang Drive 637553 Singapore
| | - Teng Fei Fan
- School of Materials Science and Engineering, Nanyang Technological University 50 Nanyang Avenue 639798 Singapore .,Centre for Biomimetic Sensor Science, Nanyang Technological University 50 Nanyang Drive 637553 Singapore
| | - Nam-Joon Cho
- School of Materials Science and Engineering, Nanyang Technological University 50 Nanyang Avenue 639798 Singapore .,Centre for Biomimetic Sensor Science, Nanyang Technological University 50 Nanyang Drive 637553 Singapore.,School of Chemical and Biomedical Engineering, Nanyang Technological University 62 Nanyang Drive 637459 Singapore
| | - Pierce K H Chow
- Division of Surgical Oncology, National Cancer Centre Singapore 11 Hospital Drive 169610 Singapore .,Duke-NUS Medical School 8 College Road 169857 Singapore.,Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital Outram Road 169608 Singapore
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15
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Ding H, Liang X, Zhang XN, Wu ZL, Li Z, Sun G. Tough supramolecular hydrogels with excellent self-recovery behavior mediated by metal-coordination interaction. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.03.061] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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Preska Steinberg A, Datta SS, Naragon T, Rolando JC, Bogatyrev SR, Ismagilov RF. High-molecular-weight polymers from dietary fiber drive aggregation of particulates in the murine small intestine. eLife 2019; 8:40387. [PMID: 30666958 PMCID: PMC6342521 DOI: 10.7554/elife.40387] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 12/28/2018] [Indexed: 12/28/2022] Open
Abstract
The lumen of the small intestine (SI) is filled with particulates: microbes, therapeutic particles, and food granules. The structure of this particulate suspension could impact uptake of drugs and nutrients and the function of microorganisms; however, little is understood about how this suspension is re-structured as it transits the gut. Here, we demonstrate that particles spontaneously aggregate in SI luminal fluid ex vivo. We find that mucins and immunoglobulins are not required for aggregation. Instead, aggregation can be controlled using polymers from dietary fiber in a manner that is qualitatively consistent with polymer-induced depletion interactions, which do not require specific chemical interactions. Furthermore, we find that aggregation is tunable; by feeding mice dietary fibers of different molecular weights, we can control aggregation in SI luminal fluid. This work suggests that the molecular weight and concentration of dietary polymers play an underappreciated role in shaping the physicochemical environment of the gut. Editorial note: This article has been through an editorial process in which the authors decide how to respond to the issues raised during peer review. The Reviewing Editor's assessment is that all the issues have been addressed (see decision letter).
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Affiliation(s)
- Asher Preska Steinberg
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, United States
| | - Sujit S Datta
- Department of Chemical and Biological Engineering, Princeton University, Princeton, United States
| | - Thomas Naragon
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, United States
| | - Justin C Rolando
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, United States
| | - Said R Bogatyrev
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, United States
| | - Rustem F Ismagilov
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, United States.,Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, United States
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17
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Ford HO, Merrill LC, He P, Upadhyay SP, Schaefer JL. Cross-Linked Ionomer Gel Separators for Polysulfide Shuttle Mitigation in Magnesium–Sulfur Batteries: Elucidation of Structure–Property Relationships. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01717] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Hunter O. Ford
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Laura C. Merrill
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Peng He
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Sunil P. Upadhyay
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jennifer L. Schaefer
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
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18
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Aguirre Calvo TR, Perullini M, Santagapita PR. Encapsulation of betacyanins and polyphenols extracted from leaves and stems of beetroot in Ca(II)-alginate beads: A structural study. J FOOD ENG 2018. [DOI: 10.1016/j.jfoodeng.2018.04.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Gaitán-Tolosa IM, Montiel-Campos R, Flores-Estrada J, Domínguez-García MV, Flores-Merino MV. Characterization of ketoprofen-loaded PEG-CH semi-IPN system for wound dressing application. J Appl Polym Sci 2018. [DOI: 10.1002/app.46644] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Ibeth M. Gaitán-Tolosa
- Laboratorio de Biología Molecular y Celular, Centro de Investigación en Ciencias Médicas; Universidad Autónoma del Estado de México; Estado de México 50130 México
- Facultad de Enfermería y Obstetricia; Universidad Autónoma del Estado de México; Estado de México 50180 México
| | - Raúl Montiel-Campos
- Departamento de Física, Área de Polímeros; Universidad Autónoma Metropolitana Iztapalapa; Ciudad de México 09340 México
| | - Jaime Flores-Estrada
- Facultad de Química; Universidad Autónoma del Estado de México; Estado de México 50180 México
| | - Ma. Victoria Domínguez-García
- Laboratorio de Biología Molecular y Celular, Centro de Investigación en Ciencias Médicas; Universidad Autónoma del Estado de México; Estado de México 50130 México
| | - Miriam V. Flores-Merino
- Laboratorio de Biología Molecular y Celular, Centro de Investigación en Ciencias Médicas; Universidad Autónoma del Estado de México; Estado de México 50130 México
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20
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Traffano-Schiffo MV, Castro-Giraldez M, Fito PJ, Perullini M, Santagapita PR. Gums induced microstructure stability in Ca(II)-alginate beads containing lactase analyzed by SAXS. Carbohydr Polym 2018; 179:402-407. [DOI: 10.1016/j.carbpol.2017.09.096] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 09/26/2017] [Accepted: 09/28/2017] [Indexed: 11/30/2022]
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21
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Cao H, Chang X, Mao H, Zhou J, Wu ZL, Shan G, Bao Y, Pan P. Stereocomplexed physical hydrogels with high strength and tunable crystallizability. SOFT MATTER 2017; 13:8502-8510. [PMID: 29091097 DOI: 10.1039/c7sm01491k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Physical hydrogels crosslinked by non-covalent interactions have attained increasing attention due to their good mechanical properties and processability. However, the use of feasible and controllable non-covalent interactions is highly essential for preparing such hydrogels. In this article, we report on stereocomplexed physical hydrogels prepared by simple casting and swelling of amphiphilic graft copolymers bearing a poly(acrylic acid) (PAA) backbone and poly(l-lactic acid) (PLLA) or poly(d-lactic acid) (PDLA) stereocomplexable side chains. The microstructure, swelling behavior, and mechanical and shape memory properties of the obtained hydrogels can be tuned by varying the copolymer composition and stereocomplex (SC) crystallization of PLLA/PDLA enantiomeric chains. The long PLLA or PDLA chains segregate to form hydrophobic, crystallized domains in water, serving as physical crosslinking junctions for hydrogels. SC crystallization between PLLA and PDLA further enhances the number density of physical crosslinkers of enantiomerically mixed hydrogels. The SC content increases as the PLLA/PDLA ratio approaches 1/1 in enantiomerically mixed hydrogels. The average distance between crosslinking junctions declines for the hydrogels with a high PLLA (or PDLA) mass fraction (MPLA) and SC content, due to the increased number density of physical crosslinkers. Accordingly, the tensile strength and the Young's modulus increase but the swelling ratio and the elongation-at-break of the hydrogels decrease with an increase in MPLA and SC content. The hydrogels exhibit shape memory behavior; the shape fixing ability is enhanced by the SC crystallization of PLLA/PDLA side chains in the hydrogels.
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Affiliation(s)
- Heqing Cao
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China.
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22
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Rehmann MS, Skeens KM, Kharkar PM, Ford EM, Maverakis E, Lee KH, Kloxin AM. Tuning and Predicting Mesh Size and Protein Release from Step Growth Hydrogels. Biomacromolecules 2017; 18:3131-3142. [PMID: 28850788 PMCID: PMC6699171 DOI: 10.1021/acs.biomac.7b00781] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Hydrogel-based depots are of growing interest for release of biopharmaceuticals; however, a priori selection of hydrogel compositions that will retain proteins of interest and provide desired release profiles remains elusive. Toward addressing this, in this work, we have established a new tool for the facile assessment of protein release from hydrogels and applied it to evaluate the effectiveness of mesh size estimations on predicting protein retention or release. Poly(ethylene glycol) (PEG)-based hydrogel depots were formed by photoinitiated step growth polymerization of four-arm PEG functionalized with norbornene (PEG-norbornene, 4% w/w to 20% w/w, Mn ∼ 5 to 20 kDa) and different dithiol cross-linkers (PEG Mn ∼ 1.5 kDa or enzymatically degradable peptide), creating well-defined, robust materials with a range of mesh sizes estimated with Flory-Rehner or rubber elasticity theory (∼5 to 15 nm). A cocktail of different model proteins was released from compositions of interest, and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) was used to facilely and quantitatively analyze temporal release profiles. Mesh size was predictive of retention of relatively large proteins and release of relatively small proteins. Proteins with diameters comparable to the mesh size, which is often the case for growth factors, were released by hindered diffusion and required experimental assessment of retention and release. With this knowledge, hydrogels were designed for the controlled release of a therapeutically relevant growth factor, PDGF-BB.
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Affiliation(s)
- Matthew S. Rehmann
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
| | - Kelsi M. Skeens
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
| | - Prathamesh M. Kharkar
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, Delaware 19716, United States
| | - Eden M. Ford
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
| | - Emanual Maverakis
- Department of Dermatology, School of Medicine, University of California, Davis, California
| | - Kelvin H. Lee
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
- Delaware Biotechnology Institute, University of Delaware, 15 Innovation Way, Newark, DE 19711
| | - April M. Kloxin
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, Delaware 19716, United States
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23
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Traffano-Schiffo MV, Aguirre Calvo TR, Castro-Giraldez M, Fito PJ, Santagapita PR. Alginate Beads Containing Lactase: Stability and Microstructure. Biomacromolecules 2017; 18:1785-1792. [DOI: 10.1021/acs.biomac.7b00202] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maria Victoria Traffano-Schiffo
- Instituto
Universitario de Ingeniería de Alimentos para el Desarrollo, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain
| | - Tatiana R. Aguirre Calvo
- Universidad de Buenos Aires, Facultad de Ciencias Exactas
y Naturales, Departamentos de Industrias y Química Orgánica, Buenos Aires, C1428EGA Argentina
| | - Marta Castro-Giraldez
- Instituto
Universitario de Ingeniería de Alimentos para el Desarrollo, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain
| | - Pedro J. Fito
- Instituto
Universitario de Ingeniería de Alimentos para el Desarrollo, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain
| | - Patricio R. Santagapita
- Universidad de Buenos Aires, Facultad de Ciencias Exactas
y Naturales, Departamentos de Industrias y Química Orgánica, Buenos Aires, C1428EGA Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Tecnología
de Alimentos y Procesos Químicos (ITAPROQ), Buenos Aires, C1428EGA Argentina
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24
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Mihajlovic M, Staropoli M, Appavou MS, Wyss HM, Pyckhout-Hintzen W, Sijbesma RP. Tough Supramolecular Hydrogel Based on Strong Hydrophobic Interactions in a Multiblock Segmented Copolymer. Macromolecules 2017; 50:3333-3346. [PMID: 28469284 PMCID: PMC5406785 DOI: 10.1021/acs.macromol.7b00319] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 03/23/2017] [Indexed: 12/12/2022]
Abstract
We report the preparation and structural and mechanical characterization of a tough supramolecular hydrogel, based exclusively on hydrophobic association. The system consists of a multiblock, segmented copolymer of hydrophilic poly(ethylene glycol) (PEG) and hydrophobic dimer fatty acid (DFA) building blocks. A series of copolymers containing 2K, 4K, and 8K PEG were prepared. Upon swelling in water, a network is formed by self-assembly of hydrophobic DFA units in micellar domains, which act as stable physical cross-link points. The resulting hydrogels are noneroding and contain 75-92 wt % of water at swelling equilibrium. Small-angle neutron scattering (SANS) measurements showed that the aggregation number of micelles ranges from 2 × 102 to 6 × 102 DFA units, increasing with PEG molecular weight. Mechanical characterization indicated that the hydrogel containing PEG 2000 is mechanically very stable and tough, possessing a tensile toughness of 4.12 MJ/m3. The high toughness, processability, and ease of preparation make these hydrogels very attractive for applications where mechanical stability and load bearing features of soft materials are required.
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Affiliation(s)
- Marko Mihajlovic
- Laboratory
of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Institute for Complex
Molecular Systems, and Department of Mechanical Engineering, Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Mariapaola Staropoli
- JCNS-1 and ICS-1,
Forschungszentrum Jülich GmbH, Leo-Brandt-Straße, 52425 Jülich, Germany
| | | | - Hans M. Wyss
- Laboratory
of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Institute for Complex
Molecular Systems, and Department of Mechanical Engineering, Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Wim Pyckhout-Hintzen
- JCNS-1 and ICS-1,
Forschungszentrum Jülich GmbH, Leo-Brandt-Straße, 52425 Jülich, Germany
| | - Rint P. Sijbesma
- Laboratory
of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Institute for Complex
Molecular Systems, and Department of Mechanical Engineering, Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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25
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Semibatch monomer addition as a general method to tune and enhance the mechanics of polymer networks via loop-defect control. Proc Natl Acad Sci U S A 2017; 114:4875-4880. [PMID: 28439017 DOI: 10.1073/pnas.1620985114] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Controlling the molecular structure of amorphous cross-linked polymeric materials is a longstanding challenge. Herein, we disclose a general strategy for precise tuning of loop defects in covalent polymer gel networks. This "loop control" is achieved through a simple semibatch monomer addition protocol that can be applied to a broad range of network-forming reactions. By controlling loop defects, we demonstrate that with the same set of material precursors it is possible to tune and in several cases substantially improve network connectivity and mechanical properties (e.g., ∼600% increase in shear storage modulus). We believe that the concept of loop control via continuous reagent addition could find broad application in the synthesis of academically and industrially important cross-linked polymeric materials, such as resins and gels.
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26
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Kitiri EN, Patrickios CS, Voutouri C, Stylianopoulos T, Hoffmann I, Schweins R, Gradzielski M. Double-networks based on pH-responsive, amphiphilic “core-first” star first polymer conetworks prepared by sequential RAFT polymerization. Polym Chem 2017. [DOI: 10.1039/c6py01340f] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Double-networks based on amphiphilic polymer conetworks synthesized using RAFT polymerization were prepared, exhibiting pH-responsiveness, nanophase separation and enhanced mechanical properties.
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Affiliation(s)
- Elina N. Kitiri
- Department of Chemistry
- University of Cyprus
- 1678 Nicosia
- Cyprus
| | | | - Chrysovalantis Voutouri
- Department of Mechanical and Manufacturing Engineering
- University of Cyprus
- Nicosia 1678
- Cyprus
| | | | - Ingo Hoffmann
- Stranski Laboratorium für Physikalische und Theoretische Chemie
- Institut für Chemie Technische Universität Berlin
- 10623 Berlin
- Germany
- Institut Max von Laue-Paul Langevin (ILL)
| | - Ralf Schweins
- Institut Max von Laue-Paul Langevin (ILL)
- F-38042 Grenoble Cedex 9
- France
| | - Michael Gradzielski
- Stranski Laboratorium für Physikalische und Theoretische Chemie
- Institut für Chemie Technische Universität Berlin
- 10623 Berlin
- Germany
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27
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Abstract
Hydrogel delivery systems can leverage therapeutically beneficial outcomes of drug delivery and have found clinical use. Hydrogels can provide spatial and temporal control over the release of various therapeutic agents, including small-molecule drugs, macromolecular drugs and cells. Owing to their tunable physical properties, controllable degradability and capability to protect labile drugs from degradation, hydrogels serve as a platform in which various physiochemical interactions with the encapsulated drugs control their release. In this Review, we cover multiscale mechanisms underlying the design of hydrogel drug delivery systems, focusing on physical and chemical properties of the hydrogel network and the hydrogel-drug interactions across the network, mesh, and molecular (or atomistic) scales. We discuss how different mechanisms interact and can be integrated to exert fine control in time and space over the drug presentation. We also collect experimental release data from the literature, review clinical translation to date of these systems, and present quantitative comparisons between different systems to provide guidelines for the rational design of hydrogel delivery systems.
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Affiliation(s)
- Jianyu Li
- John A. Paulson School of Engineering and Applied Sciences, and the Wyss Institute for biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 02138, USA
| | - David J Mooney
- John A. Paulson School of Engineering and Applied Sciences, and the Wyss Institute for biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 02138, USA
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28
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ECM proteins in a microporous scaffold influence hepatocyte morphology, function, and gene expression. Sci Rep 2016; 6:37427. [PMID: 27897167 PMCID: PMC5126637 DOI: 10.1038/srep37427] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 10/24/2016] [Indexed: 01/06/2023] Open
Abstract
It is well known that a three-dimensional (3D) culture environment and the presence of extracellular matrix (ECM) proteins facilitate hepatocyte viability and maintenance of the liver-specific phenotype in vitro. However, it is not clear whether specific ECM components such as collagen or fibronectin differentially regulate such processes, especially in 3D scaffolds. In this study, a series of ECM-functionalized inverted colloidal crystal (ICC) microporous scaffolds were fabricated and their influence on Huh-7.5 cell proliferation, morphology, hepatic-specific functions, and patterns of gene expression were compared. Both collagen and fibronectin promoted albumin production and liver-specific gene expression of Huh-7.5 cells, compared with the bare ICC scaffold. Interestingly, cells in the fibronectin-functionalized scaffold exhibited different aggregation patterns to those in the collagen-functionalized scaffold, a variation that could be related to the distinct mRNA expression levels of cell adhesion-related genes. Based on these results, we can conclude that different ECM proteins, such as fibronectin and collagen, indeed play distinct roles in the phenotypic regulation of cells cultured in a 3D environment.
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29
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Cavallo A, Madaghiele M, Masullo U, Lionetto MG, Sannino A. Photo-crosslinked poly(ethylene glycol) diacrylate (PEGDA) hydrogels from low molecular weight prepolymer: Swelling and permeation studies. J Appl Polym Sci 2016. [DOI: 10.1002/app.44380] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Anna Cavallo
- Department of Engineering for Innovation; University of Salento; Lecce 73100 Italy
| | - Marta Madaghiele
- Department of Engineering for Innovation; University of Salento; Lecce 73100 Italy
| | - Ugo Masullo
- Department of Engineering for Innovation; University of Salento; Lecce 73100 Italy
| | - Maria Giulia Lionetto
- Department of Biological and Environmental Sciences and Technologies; University of Salento; Lecce 73100 Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation; University of Salento; Lecce 73100 Italy
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30
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Shirahama H, Kumar SK, Jeon WY, Kim MH, Lee JH, Ng SS, Tabaei SR, Cho NJ. Fabrication of Inverted Colloidal Crystal Poly(ethylene glycol) Scaffold: A Three-dimensional Cell Culture Platform for Liver Tissue Engineering. J Vis Exp 2016. [PMID: 27684530 DOI: 10.3791/54331] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The ability to maintain hepatocyte function in vitro, for the purpose of testing xenobiotics' cytotoxicity, studying virus infection and developing drugs targeted at the liver, requires a platform in which cells receive proper biochemical and mechanical cues. Recent liver tissue engineering systems have employed three-dimensional (3D) scaffolds composed of synthetic or natural hydrogels, given their high water retention and their ability to provide the mechanical stimuli needed by the cells. There has been growing interest in the inverted colloidal crystal (ICC) scaffold, a recent development, which allows high spatial organization, homotypic and heterotypic cell interaction, as well as cell-extracellular matrix (ECM) interaction. Herein, we describe a protocol to fabricate the ICC scaffold using poly (ethylene glycol) diacrylate (PEGDA) and the particle leaching method. Briefly, a lattice is made from microsphere particles, after which a pre-polymer solution is added, properly polymerized, and the particles are then removed, or leached, using an organic solvent (e.g., tetrahydrofuran). The dissolution of the lattice results in a highly porous scaffold with controlled pore sizes and interconnectivities that allow media to reach cells more easily. This unique structure allows high surface area for the cells to adhere to as well as easy communication between pores, and the ability to coat the PEGDA ICC scaffold with proteins also shows a marked effect on cell performance. We analyze the morphology of the scaffold as well as the hepatocarcinoma cell (Huh-7.5) behavior in terms of viability and function to explore the effect of ICC structure and ECM coatings. Overall, this paper provides a detailed protocol of an emerging scaffold that has wide applications in tissue engineering, especially liver tissue engineering.
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Affiliation(s)
- Hitomi Shirahama
- School of Materials Science and Engineering, Nanyang Technological University
| | - Supriya K Kumar
- School of Materials Science and Engineering, Nanyang Technological University
| | - Won-Yong Jeon
- School of Materials Science and Engineering, Nanyang Technological University
| | - Myung Hee Kim
- School of Materials Science and Engineering, Nanyang Technological University
| | - Jae Ho Lee
- School of Materials Science and Engineering, Nanyang Technological University
| | - Soon Seng Ng
- School of Materials Science and Engineering, Nanyang Technological University
| | - Seyed R Tabaei
- School of Materials Science and Engineering, Nanyang Technological University
| | - Nam-Joon Cho
- School of Materials Science and Engineering, Nanyang Technological University; School of Chemical and Biomedical Engineering, Nanyang Technological University;
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31
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Wu B, Chassé W, Peters R, Brooijmans T, Dias AA, Heise A, Duxbury CJ, Kentgens APM, Brougham DF, Litvinov VM. Network Structure in Acrylate Systems: Effect of Junction Topology on Cross-Link Density and Macroscopic Gel Properties. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01070] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Bing Wu
- National
Institute for Cellular Biotechnology, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
- DSM Ahead Materials Sciences R&D, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
- DSM Resolve, P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Walter Chassé
- Institute
for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg
135, 6525 AJ Nijmegen, The Netherlands
| | - Ron Peters
- DSM Coating
Resins, Sluisweg 12, 5145
PE, Waalwijk, The Netherlands
- Analytical-Chemistry
Group, Van’t Hoff Institute for Molecular Science, University of Amsterdam, Amsterdam, The Netherlands
| | - Ton Brooijmans
- DSM Coating
Resins, Sluisweg 12, 5145
PE, Waalwijk, The Netherlands
| | - Aylvin A. Dias
- DSM Ahead Materials Sciences R&D, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
| | - Andreas Heise
- School
of
Pharmacy, Royal College of Surgeons in Ireland, 123 St. Stephen’s Green, Dublin 2, Ireland
| | | | - Arno P. M. Kentgens
- Institute
for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg
135, 6525 AJ Nijmegen, The Netherlands
| | - Dermot F. Brougham
- School
of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Victor M. Litvinov
- Institute
for Molecules and Materials, Radboud University Nijmegen, Heyendaalsweg
135, 6525 AJ Nijmegen, The Netherlands
- DSM Resolve, P.O. Box 18, 6160 MD Geleen, The Netherlands
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32
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Abstract
Colonic mucus is a key biological hydrogel that protects the gut from infection and physical damage and mediates host-microbe interactions and drug delivery. However, little is known about how its structure is influenced by materials it comes into contact with regularly. For example, the gut abounds in polymers such as dietary fibers or administered therapeutics, yet whether such polymers interact with the mucus hydrogel, and if so, how, remains unclear. Although several biological processes have been identified as potential regulators of mucus structure, the polymeric composition of the gut environment has been ignored. Here, we demonstrate that gut polymers do in fact regulate mucus hydrogel structure, and that polymer-mucus interactions can be described using a thermodynamic model based on Flory-Huggins solution theory. We found that both dietary and therapeutic polymers dramatically compressed murine colonic mucus ex vivo and in vivo. This behavior depended strongly on both polymer concentration and molecular weight, in agreement with the predictions of our thermodynamic model. Moreover, exposure to polymer-rich luminal fluid from germ-free mice strongly compressed the mucus hydrogel, whereas exposure to luminal fluid from specific-pathogen-free mice-whose microbiota degrade gut polymers-did not; this suggests that gut microbes modulate mucus structure by degrading polymers. These findings highlight the role of mucus as a responsive biomaterial, and reveal a mechanism of mucus restructuring that must be integrated into the design and interpretation of studies involving therapeutic polymers, dietary fibers, and fiber-degrading gut microbes.
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33
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Molecular structure and properties of click hydrogels with controlled dangling end defect. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/polb.24028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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34
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Rikkou-Kalourkoti M, Kitiri EN, Patrickios CS, Leontidis E, Constantinou M, Constantinides G, Zhang X, Papadakis CM. Double Networks Based on Amphiphilic Cross-Linked Star Block Copolymer First Conetworks and Randomly Cross-Linked Hydrophilic Second Networks. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02490] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Elina N. Kitiri
- Department
of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
| | - Costas S. Patrickios
- Department
of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
| | | | - Marios Constantinou
- Research
Unit for Nanostructured Materials Systems, Department of Mechanical
Engineering and Materials Science and Engineering, Cyprus University of Technology, P.O.
Box 50329, 3603 Limassol, Cyprus
| | - Georgios Constantinides
- Research
Unit for Nanostructured Materials Systems, Department of Mechanical
Engineering and Materials Science and Engineering, Cyprus University of Technology, P.O.
Box 50329, 3603 Limassol, Cyprus
| | - Xiaohan Zhang
- Fachgebiet
Physik weicher Materie, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Christine M. Papadakis
- Fachgebiet
Physik weicher Materie, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
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35
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Engberg K, Waters DJ, Kelmanovich S, Parke-Houben R, Hartmann L, Toney MF, Frank CW. Self-assembly of cholesterol tethered within hydrogel networks. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.01.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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36
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Wei K, Zhu M, Sun Y, Xu J, Feng Q, Lin S, Wu T, Xu J, Tian F, Xia J, Li G, Bian L. Robust Biopolymeric Supramolecular “Host−Guest Macromer” Hydrogels Reinforced by in Situ Formed Multivalent Nanoclusters for Cartilage Regeneration. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02527] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
| | | | | | | | | | | | | | - Jia Xu
- Shanghai Jiaotong
University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Feng Tian
- Shanghai
Institute of of Applied Physics, Chinese Academy of Sciences, Shanghai, China
| | | | | | - Liming Bian
- China Orthopedic Regenerative
Medicine Group (CORMed), Shanghai, China
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37
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Kim MH, Kumar SK, Shirahama H, Seo J, Lee JH, Cho NJ. Phenotypic regulation of liver cells in a biofunctionalized three-dimensional hydrogel platform. Integr Biol (Camb) 2016; 8:156-66. [PMID: 26792030 DOI: 10.1039/c5ib00269a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Loss of function is a major challenge for hepatocytes that are cultured on two-dimensional (2D) cell culture platforms. Biofunctionalized three-dimensional (3D) scaffolds produced by microfabrication strategies can overcome these limitations by presenting vital environmental cues, strong mechanical properties, and three-dimensional geometry to enable high-fidelity liver tissue engineering. Herein, we report the detailed investigation of hepatocarcinoma (Huh 7.5) cellular behavior in a collagen-functionalized microsphere-templated poly(ethylene glycol) (PEG) hydrogel scaffold which promotes 3D hepatic sheet morphology. Collagen conjugation led to improved liver-specific functions, including albumin production and cytochrome P450 (CYP450) activity. Importantly, the gene expression of numerous cell-adhesion markers was enhanced along with stimulated innate hepatocyte fibronectin production. Taken together, the findings reveal a close connection between hepatic cell morphology and gene expression, offering evidence that surface-coated collagen in the 3D hydrogel platform triggers the upregulation of hepatocyte-specific transcription factors and the secretion of liver metabolic markers.
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Affiliation(s)
- Myung Hee Kim
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue 639798, Singapore.
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38
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Kim MH, Kumar SK, Shirahama H, Seo J, Lee JH, Zhdanov VP, Cho NJ. Biofunctionalized Hydrogel Microscaffolds Promote 3D Hepatic Sheet Morphology. Macromol Biosci 2015; 16:314-21. [PMID: 26612190 DOI: 10.1002/mabi.201500338] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 10/07/2015] [Indexed: 12/18/2022]
Abstract
Development of artificial tissues providing the proper geometrical, mechanical, and environmental cues for cells is highly coveted in the field of tissue engineering. Recently, microfabrication strategies in combination with other chemistries have been utilized to capture the architectural complexity of intricate organs, such as the liver, in in vitro platforms. Here it is shown that a biofunctionalized poly (ethylene glycol) (PEG) hydrogel scaffold, fabricated using a sphere-template, facilitates hepatic sheet formation that follows the microscale patterns of the scaffold surface. The design takes advantage of the excellent diffusion properties of porous, uniform 3D hydrogel platforms, and the enhanced-cell-extracellular matrix interaction with the display of conjugated collagen type I, which in turn elicits favorable Huh-7.5 response. Collectively, the experimental findings and corresponding simulations demonstrate the importance of biofunctionalized porous scaffolds and indicate that the microscaffold shows promise in liver tissue engineering applications and provides distinct advantages over current cell sheet and hepatocyte spheroid technologies.
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Affiliation(s)
- Myung Hee Kim
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Centre for Biomimetic Sensor Science, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Supriya K Kumar
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Centre for Biomimetic Sensor Science, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Hitomi Shirahama
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Centre for Biomimetic Sensor Science, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Jeongeun Seo
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Centre for Biomimetic Sensor Science, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Jae-Ho Lee
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Centre for Biomimetic Sensor Science, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Vladimir P Zhdanov
- Boreskov Institute of Catalysis, Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - Nam-Joon Cho
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Centre for Biomimetic Sensor Science, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Avenue, Singapore 637459, Singapore
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39
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Park HS, Lee W, Nam YS. Elution dynamics of M13 bacteriophage bound to streptavidin immobilized in a microfluidic channel. BIOCHIP JOURNAL 2015. [DOI: 10.1007/s13206-016-0107-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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40
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Krakovský I, Székely NK. SANS study on influence of temperature on nanophase separation in epoxy-based hydrogels. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.08.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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41
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Munoz-Pinto DJ, Samavedi S, Grigoryan B, Hahn MS. In depth examination of impact of secondary reactive species on the apparent decoupling of poly(ethylene glycol) diacrylate hydrogel average mesh size and modulus. POLYMER 2015; 77:227-238. [PMID: 29332957 DOI: 10.1016/j.polymer.2015.09.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Poly(ethylene glycol) diacrylate (PEGDA) hydrogels are widely used in biotechnology due to their in situ crosslinking capacity and tunable physical properties. However, as with all single component hydrogels, the modulus of PEGDA networks cannot be tailored independently of mesh size. This interdependence places significant limitations on their use for defined, 3D cell-microenvironment studies and for certain controlled release applications. The incorporation of secondary reactive species (SRS) into PEGDA hydrogels has previously been shown to allow the identification of up to 6 PEGDA hydrogel formulations for which distinct moduli can be obtained at consistent average mesh size (or vice versa). However, the modulus and mesh size ranges which can be probed by these formulations are quite restricted. This work presents an in-depth study of SRS incorporation into PEGDA hydrogels, with the goal of expanding the space for which "decoupled" examination of modulus and mesh size effects is achievable. Towards this end, over 100 PEGDA hydrogels containing either N-vinyl pyrrolidone or star PEG-tetraacrylate as SRS were characterized. To our knowledge, this is the first study to demonstrate that SRS incorporation allows for the identification of a number of modulus ranges that can be probed at consistent average mesh size (or vice versa).
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Affiliation(s)
- Dany J Munoz-Pinto
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY
| | - Satyavrata Samavedi
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY
| | | | - Mariah S Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY
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42
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Kirchhof S, Abrami M, Messmann V, Hammer N, Goepferich AM, Grassi M, Brandl FP. Diels–Alder Hydrogels for Controlled Antibody Release: Correlation between Mesh Size and Release Rate. Mol Pharm 2015; 12:3358-68. [DOI: 10.1021/acs.molpharmaceut.5b00375] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Susanne Kirchhof
- Department
of Pharmaceutical Technology, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040 Regensburg, Germany
| | - Michela Abrami
- Department
of Life Sciences, University of Trieste, Cattinara Hospital, Strada di Fiume
447, 34127 Trieste, Italy
| | - Viktoria Messmann
- Department
of Pharmaceutical Technology, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040 Regensburg, Germany
| | - Nadine Hammer
- Department
of Pharmaceutical Technology, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040 Regensburg, Germany
| | - Achim M. Goepferich
- Department
of Pharmaceutical Technology, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040 Regensburg, Germany
| | - Mario Grassi
- Department
of Engineering and Architecture, University of Trieste, Piazzale
Europa 1, 34127 Trieste, Italy
| | - Ferdinand P. Brandl
- Department
of Pharmaceutical Technology, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040 Regensburg, Germany
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43
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Chen L, An HZ, Doyle PS. Synthesis of Nonspherical Microcapsules through Controlled Polyelectrolyte Coating of Hydrogel Templates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:9228-35. [PMID: 26244815 DOI: 10.1021/acs.langmuir.5b02200] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
We report a simple approach to fabricate custom-shape microcapsules using hydrogel templates synthesized by stop flow lithography. Cargo-containing microcapsules were made by coating hydrogel particles with a single layer of poly-l-lysine followed by a one-step core degradation and capsule cross-linking procedure. We determined appropriate coating conditions by investigating the effect of pH, ionic strength, and prepolymer composition on the diffusion of polyelectrolytes into the oppositely charged hydrogel template. We also characterized the degradation of the templating core by tracking the diffusivity of nanoparticles embedded within the hydrogel. Unlike any other technique, this approach allows for easy fabrication of microcapsules with internal features (e.g., toroids) and selective surface modification of Janus particles using any polyelectrolyte. These soft, flexible capsules may be useful for therapeutic applications as well as fundamental studies of membrane mechanics.
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Affiliation(s)
- Lynna Chen
- Department of Biological Engineering and ‡Department of Chemical Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Harry Z An
- Department of Biological Engineering and ‡Department of Chemical Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Patrick S Doyle
- Department of Biological Engineering and ‡Department of Chemical Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
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44
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Tong X, Lee S, Bararpour L, Yang F. Long-Term Controlled Protein Release from Poly(Ethylene Glycol) Hydrogels by Modulating Mesh Size and Degradation. Macromol Biosci 2015; 15:1679-86. [PMID: 26259711 DOI: 10.1002/mabi.201500245] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 07/21/2015] [Indexed: 01/09/2023]
Abstract
Poly(ethylene glycol) (PEG)-based hydrogels are popular biomaterials for protein delivery to guide desirable cellular fates and tissue repair. However, long-term protein release from PEG-based hydrogels remains challenging. Here, we report a PEG-based hydrogel platform for long term protein release, which allows efficient loading of proteins via physical entrapment. Tuning hydrogel degradation led to increase in hydrogel mesh size and gradual release of protein over 60 days of with retained bioactivity. Importantly, this platform does not require the chemical modification of loaded proteins, and may serve as a versatile tool for long-term delivery of a wide range of proteins for drug-delivery and tissue-engineering applications.
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Affiliation(s)
- Xinming Tong
- Department of Orthopaedic Surgery, Stanford University, CA, 94305, USA
| | - Soah Lee
- Department of Materials Science and Engineering, Stanford University, CA, 94305, USA
| | - Layla Bararpour
- Department of Bioengineering, Stanford University, CA, 94305, USA
| | - Fan Yang
- Departments of Orthopaedic Surgery and Bioengineering, Stanford University, CA, 94305, USA.
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45
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Malo de Molina P, Lad S, Helgeson ME. Heterogeneity and its Influence on the Properties of Difunctional Poly(ethylene glycol) Hydrogels: Structure and Mechanics. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01115] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Paula Malo de Molina
- Department of Chemical Engineering, University of California, Santa Barbara, 3357 Engineering II, Santa Barbara, California 93106, United States
| | - Sahger Lad
- Department of Chemical Engineering, University of California, Santa Barbara, 3357 Engineering II, Santa Barbara, California 93106, United States
| | - Matthew E. Helgeson
- Department of Chemical Engineering, University of California, Santa Barbara, 3357 Engineering II, Santa Barbara, California 93106, United States
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46
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Khanlari A, Suekama TC, Detamore MS, Gehrke SH. Structurally diverse and readily tunable photocrosslinked chondroitin sulfate based copolymers. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/polb.23751] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anahita Khanlari
- Department of Chemical and Petroleum Engineering; University of Kansas; Learned Hall, Room 4163 Lawrence Kansas 66045
| | - Tiffany C. Suekama
- Department of Chemical and Petroleum Engineering; University of Kansas; Learned Hall, Room 4163 Lawrence Kansas 66045
| | - Michael S. Detamore
- Department of Chemical and Petroleum Engineering; University of Kansas; Learned Hall, Room 4163 Lawrence Kansas 66045
- Bioengineering Program; University of Kansas; Lawrence Kansas 66045
| | - Stevin H. Gehrke
- Department of Chemical and Petroleum Engineering; University of Kansas; Learned Hall, Room 4163 Lawrence Kansas 66045
- Bioengineering Program; University of Kansas; Lawrence Kansas 66045
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47
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Fox CH, Engler AC, Toney MF, Hedrick JL, Frank CW. Tunable mesoscale-structured self-assembled hydrogels synthesized by organocatalytic ring-opening polymerization. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.03.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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48
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Nanocomposites composed of HEUR polymer and magnetite iron oxide nanoparticles: Structure and magnetic response of the hydrogel and dried state. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.01.039] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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49
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Munoz-Pinto DJ, Jimenez-Vergara AC, Gharat TP, Hahn MS. Characterization of sequential collagen-poly(ethylene glycol) diacrylate interpenetrating networks and initial assessment of their potential for vascular tissue engineering. Biomaterials 2015; 40:32-42. [PMID: 25433604 PMCID: PMC5469296 DOI: 10.1016/j.biomaterials.2014.10.051] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Accepted: 10/19/2014] [Indexed: 12/13/2022]
Abstract
Collagen hydrogels have been widely investigated as scaffolds for vascular tissue engineering due in part to the capacity of collagen to promote robust cell adhesion and elongation. However, collagen hydrogels display relatively low stiffness and strength, are thrombogenic, and are highly susceptible to cell-mediated contraction. In the current work, we develop and characterize a sequentially-formed interpenetrating network (IPN) that retains the benefits of collagen, but which displays enhanced mechanical stiffness and strength, improved thromboresistance, high physical stability and resistance to contraction. In this strategy, we first form a collagen hydrogel, infuse this hydrogel with poly(ethylene glycol) diacrylate (PEGDA), and subsequently crosslink the PEGDA by exposure to longwave UV light. These collagen-PEGDA IPNs allow for cell encapsulation during the fabrication process with greater than 90% cell viability via inclusion of cells within the collagen hydrogel precursor solution. Furthermore, the degree of cell spreading within the IPNs can be tuned from rounded to fully elongated by varying the time delay between the formation of the cell-laden collagen hydrogel and the formation of the PEGDA network. We also demonstrate that these collagen-PEGDA IPNs are able to support the initial stages of smooth muscle cell lineage progression by elongated human mesenchymal stems cells.
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Affiliation(s)
- Dany J Munoz-Pinto
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street Troy, NY, 12180, USA
| | | | - Tanmay P Gharat
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, 110 8th Street Troy, NY, 12180, USA
| | - Mariah S Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street Troy, NY, 12180, USA.
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50
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Paciello A, Santonicola MG. A supramolecular two-photon-active hydrogel platform for direct bioconjugation under near-infrared radiation. J Mater Chem B 2015; 3:1313-1320. [DOI: 10.1039/c4tb01619j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel hydrogel self-assembled from partially methacrylated polyethyleneimine shows photo-activity at near-infrared wavelengths and offers a selective platform for the rapid and direct conjugation of biomolecules by two-photon laser irradiation without additional initiators.
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Affiliation(s)
- Antonio Paciello
- Center for Advanced Biomaterials for Healthcare
- Istituto Italiano di Tecnologia
- 80125 Naples
- Italy
- Interdisciplinary Research Centre on Biomaterials (CRIB)
| | - M. Gabriella Santonicola
- Department of Chemical Materials and Environmental Engineering
- Sapienza University of Rome
- 00161 Rome
- Italy
- Materials Science and Technology of Polymers
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