1
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Zhang P, Zhang X, Kreuzer LP, Schwaiger DM, Lu M, Cubitt R, Zhong Q, Müller-Buschbaum P. Kinetics of UV Radiation-Induced Fast Collapse and Recovery in Thermally Cycled and Rehydrated Light- and Thermo- Double-Responsive Copolymer Films Probed by In Situ Neutron Reflectivity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:10464-10474. [PMID: 37458993 DOI: 10.1021/acs.langmuir.3c00905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
The kinetics of UV radiation-induced fast collapse and recovery in thermally cycled and rehydrated light- and thermo- double-responsive copolymer films of poly(oligo(ethylene glycol) methyl ether methacrylate-co-6-(4-phenylazophenoxy)hexyl acrylate), abbreviated as P(OEGMA300-co-PAHA), are probed by in situ neutron reflectivity (NR). The copolymer film is exposed to a thermal treatment starting at a temperature of 60 °C, which is well above its transition temperature (TT = 53 °C) before the temperature is rapidly decreased from 60 to 23 °C. Based on the applied protocol, the initially collapsed P(OEGMA300-co-PAHA) film is rehydrated due to the switching of polymer chains from a more hydrophobic to a more hydrophilic state when the temperature falls below its TT. The whole rehydration process can be divided into 3 stages: D2O absorption, chain rearrangement, and film reswelling. After rehydration, the thermally cycled P(OEGMA300-co-PAHA) film is switched by UV irradiation via setting the UV radiation on and off. Considering the UV-induced collapse and recovery, both processes are slower than those observed in freshly hydrated films without any thermal stimulus history. Therefore, the experienced thermal history of the film should be considered in the design of sensors and detectors based on double-responsive copolymer films.
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Affiliation(s)
- Panpan Zhang
- Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province; Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, 310018 Hangzhou, China
| | - Xuan Zhang
- Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province; Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, 310018 Hangzhou, China
| | - Lucas P Kreuzer
- Department of Physics, Chair for Functional Materials, TUM School of Natural Sciences, Technical University of Munich, James-Franck-Street 1, 85748 Garching, Germany
- Heinz Maier-Leibnitz Zentrum (MLZ), Technical University of Munich, Lichtenbergstraße 1, 85748 Garching, Germany
| | - Dominik M Schwaiger
- Department of Physics, Chair for Functional Materials, TUM School of Natural Sciences, Technical University of Munich, James-Franck-Street 1, 85748 Garching, Germany
| | - Min Lu
- Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province; Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, 310018 Hangzhou, China
| | - Robert Cubitt
- Institut Laue-Langevin, 6 Rue Jules Horowitz, 38000 Grenoble, France
| | - Qi Zhong
- Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province; Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, 310018 Hangzhou, China
- Department of Physics, Chair for Functional Materials, TUM School of Natural Sciences, Technical University of Munich, James-Franck-Street 1, 85748 Garching, Germany
| | - Peter Müller-Buschbaum
- Department of Physics, Chair for Functional Materials, TUM School of Natural Sciences, Technical University of Munich, James-Franck-Street 1, 85748 Garching, Germany
- Heinz Maier-Leibnitz Zentrum (MLZ), Technical University of Munich, Lichtenbergstraße 1, 85748 Garching, Germany
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2
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Yang S, Liu Z, Pan Y, Guan J, Yang P, Asel M. A Review of Research Progress on the Performance of Intelligent Polymer Gel. Molecules 2023; 28:molecules28104246. [PMID: 37241984 DOI: 10.3390/molecules28104246] [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: 04/08/2023] [Revised: 05/13/2023] [Accepted: 05/19/2023] [Indexed: 05/28/2023] Open
Abstract
Intelligent polymer gel, as a popular polymer material, has been attracting much attention for its application. An intelligent polymer gel will make corresponding changes to adapt to the environment after receiving stimuli; therefore, an intelligent polymer gel can play its role in many fields. With the research on intelligent polymer gels, there is great potential for applications in the fields of drug engineering, molecular devices, and biomedicine in particular. The strength and responsiveness of the gels can be improved under different configurations in different technologies to meet the needs in these fields. There is no discussion on the application of intelligent polymer gels in these fields; therefore, this paper reviews the research progress of intelligent polymer gel, describes the important research of some intelligent polymer gel, summarizes the research progress and current situation of intelligent polymer gel in the environment of external stimulation, and discusses the performance and future development direction of intelligent polymer gel.
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Affiliation(s)
- Shuangchun Yang
- Department of Petroleum and Natural Gas Engineering College, Liaoning Petrochemical University, No. 1, West Section of Dandong Road, Wanghua District, Fushun 113001, China
| | - Zhenye Liu
- Department of Petroleum and Natural Gas Engineering College, Liaoning Petrochemical University, No. 1, West Section of Dandong Road, Wanghua District, Fushun 113001, China
| | - Yi Pan
- Department of Petroleum and Natural Gas Engineering College, Liaoning Petrochemical University, No. 1, West Section of Dandong Road, Wanghua District, Fushun 113001, China
| | - Jian Guan
- Engineering Department of Greatwall Well Drilling Company, China National Petroleum Corporation, Panjin 124000, China
| | - Peng Yang
- Engineering Department of Greatwall Well Drilling Company, China National Petroleum Corporation, Panjin 124000, China
| | - Muratbekova Asel
- Institute of International Education, Liaoning Petrochemical University, Fushun 113001, China
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3
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Chittari SS, Obermeyer AC, Knight AS. Investigating Fundamental Principles of Nonequilibrium Assembly Using Temperature-Sensitive Copolymers. J Am Chem Soc 2023; 145:6554-6561. [PMID: 36913711 DOI: 10.1021/jacs.3c00883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
Abstract
Both natural biomaterials and synthetic materials benefit from complex energy landscapes that provide the foundation for structure-function relationships and environmental sensitivity. Understanding these nonequilibrium dynamics is important for the development of design principles to harness this behavior. Using a model system of poly(ethylene glycol) methacrylate-based thermoresponsive lower critical solution temperature (LCST) copolymers, we explored the impact of composition and stimulus path on nonequilibrium thermal hysteretic behavior. Through turbidimetry analysis of nonsuperimposable heat-cool cycles, we observe that LCST copolymers show clear hysteresis that varies as a function of pendent side chain length and hydrophobicity. Hysteresis is further impacted by the temperature ramp rate, as insoluble states can be kinetically trapped under optimized temperature protocols. This systematic study brings to light fundamental principles that can enable the harnessing of out-of-equilibrium effects in synthetic soft materials.
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Affiliation(s)
- Supraja S Chittari
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Allie C Obermeyer
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Abigail S Knight
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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4
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Lebedeva IO, Zhulina EB, Borisov OV. Polymorphism of self-assembled colloidal nanostructures of comblike and bottlebrush block copolymers. Colloid Polym Sci 2023. [DOI: 10.1007/s00396-023-05073-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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5
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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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6
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Uhlik F, Rud OV, Borisov OV, Zhulina EB. Hairy Gels: A Computational Study. Gels 2022; 8:gels8120793. [PMID: 36547317 PMCID: PMC9777993 DOI: 10.3390/gels8120793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
We present results of MD and MC simulations of the equilibrium properties of swelling gels with comb-like or bottlebrush subchains and compare them to scaling-theory predictions. In accordance with theory, the simulation results demonstrate that swelling coefficient of the gel increases as a function of the polymerization degree of the main chains and exhibits a very weak maximum (or is virtually constant) as a function of the polymerization degree and grafting density of side chains. The bulk osmotic modulus passes through a shallow minimum as the polymerization degree of the side chains increases. This minimum is attributed to the onset of overlap of side chains belonging to different bottlebrush strands in the swollen gel.
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Affiliation(s)
- Filip Uhlik
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, 128 00 Prague, Czech Republic
- Correspondence: (F.U.); (O.V.R.); (O.V.B.); (E.B.Z.)
| | - Oleg V. Rud
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, 128 00 Prague, Czech Republic
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, 199004 St. Petersburg, Russia
- Correspondence: (F.U.); (O.V.R.); (O.V.B.); (E.B.Z.)
| | - Oleg V. Borisov
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, 199004 St. Petersburg, Russia
- Institut des Sciences Analytiques et de Physico-Chimie Pour l’Environnement et les Matériaux, UMR 5254 CNRS UPPA, CEDEX 9, 64053 Pau, France
- Correspondence: (F.U.); (O.V.R.); (O.V.B.); (E.B.Z.)
| | - Ekaterina B. Zhulina
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, 199004 St. Petersburg, Russia
- Correspondence: (F.U.); (O.V.R.); (O.V.B.); (E.B.Z.)
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7
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Zhulina EB, Sheiko SS, Borisov OV. Theoretical advances in molecular bottlebrushes and comblike (co)polymers: solutions, gels, and self-assembly. SOFT MATTER 2022; 18:8714-8732. [PMID: 36373559 DOI: 10.1039/d2sm01141g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
We present an overview of state-of-the-art theory of (i) conformational properties of molecular bottlebrushes in solution, (ii) self-assembly of di- and triblock copolymers comprising comb-shaped and bottlebrush blocks in solutions and melts, and (iii) cross-linked and self-assembled gels with bottlebrush subchains. We demonstrate how theoretical models enable quantitative prediction and interpretation of experimental results and provide rational guidance for design of new materials with physical properties tunable by architecture of constituent bottlebrush blocks.
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Affiliation(s)
- Ekaterina B Zhulina
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, St. Petersburg, Russia
| | - Sergei S Sheiko
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, St. Petersburg, Russia
- Department of Chemistry, University of North Carolina at Chapel Hill, 27599, USA
| | - Oleg V Borisov
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, St. Petersburg, Russia
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux, UMR 5254 CNRS UPPA, Pau, France.
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8
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Lei L, Hu Y, Shi H, Bao Z, Wu Y, Jiang J, Li X. Biofunctional peptide-click PEG-based hydrogels as 3D cell scaffolds for corneal epithelial regeneration. J Mater Chem B 2022; 10:5938-5945. [PMID: 35894700 DOI: 10.1039/d2tb00983h] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Poly(ethylene glycol) (PEG)-based hydrogels as highly promising 3D cell scaffolds have been widely implemented in the field of tissue regrowth and regeneration, yet the functionalized PEG hydrogel providing dynamic, cell-instructive microenvironments is inherently difficult to obtain. Here, we have exploited the specificity of click reaction to develop a set of hydrogels based on 4-arm PEG tetraazide (4-arm-PEG-N3) and di-propargylated peptides (GRGDG and GRDGG) with tunable physicochemical properties applicable for 3D cell scaffolds. The azide groups of PEG were reacted with the alkynyl groups of peptides, catalyzed by copper to form triazole rings, thus generating a cross-linked hydrogel. The gelation time and mechanical strength of the hydrogels varied according to the PEG/peptide feed ratio. The resulting hydrogel exhibited a typical porous microstructure and suitable swelling behavior. The in vitro cytotoxicity test indicated that the resulting hydrogels did not cause apparent cytotoxicity against human corneal epithelial cells (HCECs). After co-incubation with HCECs, the density of RGD as well as peptide sequence in the hydrogels remarkably affected the cell attachment, spreadability, and proliferation. Additionally, the proposed hydrogel showed high ocular biocompatibility after being embedded subconjunctivally into rabbit eyes. Overall, these findings highlighted that the biofunctional hydrogels formed by PEG and RGD motifs via a controllable click reaction might be promising 3D cell scaffolds for corneal epithelial regeneration.
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Affiliation(s)
- Lei Lei
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou 325027, P. R. China.
| | - Yuhan Hu
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou 325027, P. R. China.
| | - Hui Shi
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou 325027, P. R. China.
| | - Zhishu Bao
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou 325027, P. R. China.
| | - Yiping Wu
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou 325027, P. R. China.
| | - Jun Jiang
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou 325027, P. R. China.
| | - Xingyi Li
- Institute of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou 325027, P. R. China.
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9
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Zhao J, Peng YY, Wang J, Diaz-Dussan D, Tian W, Duan W, Kong L, Hao X, Narain R. Temperature-Responsive Aldehyde Hydrogels with Injectable, Self-Healing, and Tunable Mechanical Properties. Biomacromolecules 2022; 23:2552-2561. [PMID: 35608162 DOI: 10.1021/acs.biomac.2c00260] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Injectable and self-healing hydrogels with exemplary biocompatibility and tunable mechanical properties are urgently needed due to their significant advantages for tissue engineering applications. Here, we report a new temperature-responsive aldehyde hydrogel with dual physical-cross-linked networks and injectable and self-healing properties prepared from an ABA-type triblock copolymer, poly{[FPMA(4-formylphenyl methacrylate)-co-DEGMA[di(ethylene glycol) methyl ether methacrylate]-b-MPC(2-methacryloyloxyethyl phosphorylcholine)-b-(FPMA-co-DEGMA)}. The thermoresponsive poly(DEGMA) segments drive the dehydration and hydrophobic interaction, enabling polymer chain winding as the first cross-linking network, when the temperature is raised above the critical gelation temperature. Meanwhile, the benzaldehyde groups offer physical interactions, including hydrogen bonding and hydrophobic and π-π stacking interactions as the second cross-linking network. When increasing the benzaldehyde content in the triblock copolymers from 0 to 8.2 mol %, the critical gelation temperature of the resulted hydrogels dropped from 35.5 to 19.9 °C and the mechanical modulus increased from 21 to 1411 Pa. Owing to the physical-cross-linked networks, the hydrogel demonstrated excellent injectability and self-healing properties. The cell viabilities tested from MTT assays toward both normal lung fibroblast cells (MRC-5) and cancerous cervical (HeLa) cells were found to be 100 and 101%, respectively, for varying polymer concentrations up to 1 mg/mL. The 3D cell encapsulation of the hydrogels was evaluated by a cytotoxicity Live/Dead assay, showing 92% cell viability. With these attractive physiochemical and biological properties, this temperature-responsive aldehyde hydrogel can be a promising candidate as a cell scaffold for tissue engineering.
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Affiliation(s)
- Jianyang Zhao
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia.,Manufacturing, CSIRO, Research Way, Clayton, Victoria 3168, Australia.,School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou 511442, China
| | - Yi-Yang Peng
- Department of Chemical and Materials Engineering, University of Alberta, 116 Street and 85th Avenue, Edmonton, Alberta T6G 2G6, Canada
| | - Jinquan Wang
- Guangdong Province Key Laboratory of Biotechnology Drug Candidates, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Diana Diaz-Dussan
- Department of Chemical and Materials Engineering, University of Alberta, 116 Street and 85th Avenue, Edmonton, Alberta T6G 2G6, Canada
| | - Wendy Tian
- Manufacturing, CSIRO, Research Way, Clayton, Victoria 3168, Australia
| | - Wei Duan
- School of Medicine, Deakin University, Waurn Ponds, Victoria 3216, Australia
| | - Lingxue Kong
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia
| | - Xiaojuan Hao
- Manufacturing, CSIRO, Research Way, Clayton, Victoria 3168, Australia
| | - Ravin Narain
- Department of Chemical and Materials Engineering, University of Alberta, 116 Street and 85th Avenue, Edmonton, Alberta T6G 2G6, Canada
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10
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Kureha T, Ohira M, Takahashi Y, Li X, Gilbert EP, Shibayama M. Nanoscale Structures of Poly(oligo ethylene glycol methyl ether methacrylate) Hydrogels Revealed by Small-Angle Neutron Scattering. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takuma Kureha
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Masashi Ohira
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8685, Japan
| | - Yuki Takahashi
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Xiang Li
- Faculty of Advanced Life Science, Hokkaido University, Sapporo 001-0021, Japan
| | - Elliot P. Gilbert
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, New Illawarra Road, Lucas Heights, New South Wales 2234, Australia
| | - Mitsuhiro Shibayama
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society, 162-1 Tokai, Ibaraki 319-1106, Japan
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11
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Vashahi F, Martinez MR, Dashtimoghadam E, Fahimipour F, Keith AN, Bersenev EA, Ivanov DA, Zhulina EB, Popryadukhin P, Matyjaszewski K, Vatankhah-Varnosfaderani M, Sheiko SS. Injectable bottlebrush hydrogels with tissue-mimetic mechanical properties. SCIENCE ADVANCES 2022; 8:eabm2469. [PMID: 35061528 PMCID: PMC8782458 DOI: 10.1126/sciadv.abm2469] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Injectable hydrogels are desired in many biomedical applications due to their minimally invasive deployment to the body and their ability to introduce drugs. However, current injectables suffer from mechanical mismatch with tissue, fragility, water expulsion, and high viscosity. To address these issues, we design brush-like macromolecules that concurrently provide softness, firmness, strength, fluidity, and swellability. The synthesized linear-bottlebrush-linear (LBL) copolymers facilitate improved injectability as the compact conformation of bottlebrush blocks results in low solution viscosity, while the thermoresponsive linear blocks permit prompt gelation at 37°C. The resulting hydrogels mimic the deformation response of supersoft tissues such as adipose and brain while withstanding deformations of 700% and precluding water expulsion upon gelation. Given their low cytotoxicity and mild inflammation in vivo, the developed materials will have vital implications for reconstructive surgery, tissue engineering, and drug delivery applications.
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Affiliation(s)
- Foad Vashahi
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - Michael R. Martinez
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
| | - Erfan Dashtimoghadam
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - Farahnaz Fahimipour
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - Andrew N. Keith
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - Egor A. Bersenev
- Phystech School of Electronics, Photonics, and Molecular Physics, Moscow Institute of Physics and Technology, Institutskiy per. 9, Dolgoprudny 141700, Russia
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka 142432, Russia
| | - Dimitri A. Ivanov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka 142432, Russia
- Institut de Sciences des Matériaux de Mulhouse-IS2M, CNRS UMR 7361, 15 rue Jean Starcky, F-68057 Mulhouse, France
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/51, Moscow 119991, Russia
| | - Ekaterina B. Zhulina
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia
| | - Pavel Popryadukhin
- Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
- Corresponding author. (S.S.S.); (M.V.-V.); (K.M.)
| | - Mohammad Vatankhah-Varnosfaderani
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
- Corresponding author. (S.S.S.); (M.V.-V.); (K.M.)
| | - Sergei S. Sheiko
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
- Corresponding author. (S.S.S.); (M.V.-V.); (K.M.)
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12
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Thermoresponsive poly(di(ethylene glycol) methyl ether methacrylate)-ran-(polyethylene glycol methacrylate) graft copolymers exhibiting temperature-dependent rheology and self-assembly. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Li Q, Wang L, Chen F, Constantinou AP, Georgiou TK. Thermoresponsive oligo(ethylene glycol) methyl ether methacrylate based copolymers: composition and comonomer effect. Polym Chem 2022. [DOI: 10.1039/d1py01688a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Thermoresponsive polymers based on oligo(ethylene glycol) (OEG) methyl ether methacrylate monomers from unimers to micelles to precipitation.
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Affiliation(s)
- Qian Li
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ, London, UK
| | - Lezhi Wang
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ, London, UK
| | - Feihong Chen
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ, London, UK
| | - Anna P. Constantinou
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ, London, UK
| | - Theoni K. Georgiou
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ, London, UK
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Tandon I, Ozkizilcik A, Ravishankar P, Balachandran K. Aortic valve cell microenvironment: Considerations for developing a valve-on-chip. BIOPHYSICS REVIEWS 2021; 2:041303. [PMID: 38504720 PMCID: PMC10903420 DOI: 10.1063/5.0063608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 11/15/2021] [Indexed: 03/21/2024]
Abstract
Cardiac valves are sophisticated, dynamic structures residing in a complex mechanical and hemodynamic environment. Cardiac valve disease is an active and progressive disease resulting in severe socioeconomic burden, especially in the elderly. Valve disease also leads to a 50% increase in the possibility of associated cardiovascular events. Yet, valve replacement remains the standard of treatment with early detection, mitigation, and alternate therapeutic strategies still lacking. Effective study models are required to further elucidate disease mechanisms and diagnostic and therapeutic strategies. Organ-on-chip models offer a unique and powerful environment that incorporates the ease and reproducibility of in vitro systems along with the complexity and physiological recapitulation of the in vivo system. The key to developing effective valve-on-chip models is maintaining the cell and tissue-level microenvironment relevant to the study application. This review outlines the various components and factors that comprise and/or affect the cell microenvironment that ought to be considered while constructing a valve-on-chip model. This review also dives into the advancements made toward constructing valve-on-chip models with a specific focus on the aortic valve, that is, in vitro studies incorporating three-dimensional co-culture models that incorporate relevant extracellular matrices and mechanical and hemodynamic cues.
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Affiliation(s)
- Ishita Tandon
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
| | - Asya Ozkizilcik
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
| | - Prashanth Ravishankar
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
| | - Kartik Balachandran
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
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15
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Constantinou AP, Zhang K, Somuncuoğlu B, Feng B, Georgiou TK. PEG-Based Methacrylate Tetrablock Terpolymers: How Does the Architecture Control the Gelation? Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00349] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anna P. Constantinou
- Department of Materials, Royal School of Mines, Imperial College London, Exhibition Road, SW7 2AZ London, United Kingdom
| | - Kaiwen Zhang
- Department of Materials, Royal School of Mines, Imperial College London, Exhibition Road, SW7 2AZ London, United Kingdom
| | - Birsen Somuncuoğlu
- Department of Materials, Royal School of Mines, Imperial College London, Exhibition Road, SW7 2AZ London, United Kingdom
| | - Bailin Feng
- Department of Materials, Royal School of Mines, Imperial College London, Exhibition Road, SW7 2AZ London, United Kingdom
| | - Theoni K. Georgiou
- Department of Materials, Royal School of Mines, Imperial College London, Exhibition Road, SW7 2AZ London, United Kingdom
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16
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Binch ALA, Ratcliffe LPD, Milani AH, Saunders BR, Armes SP, Hoyland JA. Site-Directed Differentiation of Human Adipose-Derived Mesenchymal Stem Cells to Nucleus Pulposus Cells Using an Injectable Hydroxyl-Functional Diblock Copolymer Worm Gel. Biomacromolecules 2021; 22:837-845. [PMID: 33470795 DOI: 10.1021/acs.biomac.0c01556] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Adipose-derived mesenchymal stem cells (ASCs) have been identified for their promising therapeutic potential to regenerate and repopulate the degenerate intervertebral disk (IVD), which is a major cause of lower back pain. The optimal cell delivery system remains elusive but encapsulation of cells within scaffolds is likely to offer a decisive advantage over the delivery of cells in solution by ensuring successful retention within the tissue. Herein, we evaluate the use of a fully synthetic, thermoresponsive poly(glycerol monomethacrylate)-poly(2-hydroxypropyl methacrylate) (PGMA-PHPMA) diblock copolymer worm gel that mimics the structure of hydrophilic glycosaminoglycans. The objective was to use this gel to direct differentiation of human ASCs toward a nucleus pulposus (NP) phenotype, with or without the addition of discogenic growth factors TGFβ or GDF6. Accordingly, human ASCs were incorporated into a cold, free-flowing aqueous dispersion of the diblock copolymer, gelation induced by warming to 37 °C and cell culture was conducted for 14 days with or without such growth factors to assess the expression of characteristic NP markers compared to those produced when using collagen gels. In principle, the shear-thinning nature of the biocompatible worm gel enables encapsulated human ASCs to be injected into the IVD using a 21G needle. Moreover, we find significantly higher gene expression levels of ACAN, SOX-9, KRT8, and KR18 for ASCs encapsulated within worm gels compared to collagen scaffolds, regardless of the growth factors employed. In summary, such wholly synthetic worm gels offer considerable potential as an injectable cell delivery scaffold for the treatment of degenerate disk disease by promoting the transition of ASCs toward an NP-phenotype.
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Affiliation(s)
- Abbie L A Binch
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Manchester M13 9PL, U.K
| | - Liam P D Ratcliffe
- Department of Chemistry, University of Sheffield Brook Hill, Sheffield S3 7HF, South Yorkshire, U.K
| | - Amir H Milani
- Department of Materials, University of Manchester, Manchester M13 9PL, U.K
| | - Brian R Saunders
- Department of Materials, University of Manchester, Manchester M13 9PL, U.K
| | - Steven P Armes
- Department of Chemistry, University of Sheffield Brook Hill, Sheffield S3 7HF, South Yorkshire, U.K
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Manchester M13 9PL, U.K.,NIHR Manchester Biomedical Research Centre, Central Manchester Foundation Trust, Manchester Academic Health Science Centre, Manchester M13 9WL, U.K
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