1
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Bhalani D, Kakkad H, Modh J, Ray D, Aswal VK, Pillai SA. Molecular insights into the aggregation and solubilizing behavior of biocompatible amphiphiles Gelucire® 48/16 and Tetronics® 1304 in aqueous media. RSC Adv 2023; 13:28590-28601. [PMID: 37780735 PMCID: PMC10540152 DOI: 10.1039/d3ra04844f] [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: 07/19/2023] [Accepted: 09/21/2023] [Indexed: 10/03/2023] Open
Abstract
A comparative analysis of the micellar and solubilizing properties of two polyethylene glycol (PEG)-based amphiphilic biocompatible excipients: Gelucire® 48/16 (Ge 48/16) and Tetronics® 1304 (T1304), in the presence and absence of salt, was conducted. As there is a dearth of research in this area, the study aims to shed light on the behavior of these two nonionic surfactants and their potential as nanocarriers for solubilizing pharmaceuticals. Various techniques such as cloud point (CP), dynamic light scattering (DLS), small-angle neutron scattering (SANS), Fourier transform infrared spectroscopy (FT-IR), UV spectrophotometry, and high-performance liquid chromatography (HPLC) were employed. The solubility of quercetin (QCT), a flavonoid with anti-inflammatory, antioxidant, and anti-cancer properties, was evaluated and the interaction between QCT and the micellar system was examined. The analysis revealed the occurrence of strong interactions between QCT and surfactant molecules, resulting in enhanced solubility. It was observed that the micellar size and solubilizing ability were significantly improved in the presence of salt, while the CP decreased. Ge 48/16 exhibited superior performance, with a remarkable increase in the solubility of QCT in the presence of salt, suggesting its potential as an effective nanocarrier for a range of pharmaceutics, and yielding better therapeutic outcomes.
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Affiliation(s)
- Deep Bhalani
- School of Sciences, P. P. Savani University NH-8, GETCO, Near Biltech, Kosamba Surat 394125 Gujarat India
| | - Hiral Kakkad
- School of Sciences, P. P. Savani University NH-8, GETCO, Near Biltech, Kosamba Surat 394125 Gujarat India
| | - Jignasa Modh
- School of Sciences, P. P. Savani University NH-8, GETCO, Near Biltech, Kosamba Surat 394125 Gujarat India
| | - Debes Ray
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC) Mumbai 400085 Maharashtra India
- Biomacromolecular Systems and Processes, Institute of Biological Information Processing, Forschungszentrum Jülich Jülich 52428 Germany
| | - Vinod K Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC) Mumbai 400085 Maharashtra India
| | - Sadafara A Pillai
- School of Sciences, P. P. Savani University NH-8, GETCO, Near Biltech, Kosamba Surat 394125 Gujarat India
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2
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Wang H, Zhang Z, Chen J, Lian C, Han X, Liu H. Conformation-dominated surface antifouling and aqueous lubrication. Colloids Surf B Biointerfaces 2022; 214:112452. [PMID: 35325866 DOI: 10.1016/j.colsurfb.2022.112452] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/03/2022] [Accepted: 03/07/2022] [Indexed: 12/28/2022]
Abstract
Antifouling and aqueous lubrication are important properties for biomaterials, especially for those with implantation purposes. In order to better understand the polymer conformation dependence of the surface antifouling and lubrication properties, poly(ethylene glycol) (PEG) polymers with mono-functional and difunctional catechol anchors were designed and anchored on surface to adopt tail and loop conformations. Diblock and triblock copolymers with poly(dopamine methacrylamide) (PDMA) block as anchors and PEG block as the main body were synthesized and anchored on silicon surfaces by a "grafting to" strategy. The chemical composition, film thickness, and surface roughness of both coatings were controlled to be similar to give a direct comparison of looped brushes and tailed analogues. Then, the antifouling and surface friction behaviors were detected to verify the topological conformation effect of PEG polymer brushes. Results showed that PEG triblock copolymer modified surface exhibited an obviously better antifouling property and a lower friction coefficient of ∼0.011 than that of PEG diblock copolymer modified surface. Additionally, calculation and simulation results demonstrated that triblock copolymer had higher adsorption energy and anchored on surface with looped conformation. It is indicated that the strongly anchored PEG loops are effective for excellent antifouling and lubricating properties due to its strong hydration and steric hindrance. The conformation-dominated enhanced antifouling and reduced interfacial friction is an effective method for the development of excellent antifouling surfaces.
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Affiliation(s)
- Hanhan Wang
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Zekai Zhang
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Jiao Chen
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Cheng Lian
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Xia Han
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Honglai Liu
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
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3
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Salminen L, Karjalainen E, Aseyev V, Tenhu H. Phase Separation of Aqueous Poly(diisopropylaminoethyl methacrylate) upon Heating. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5135-5148. [PMID: 34752116 PMCID: PMC9069861 DOI: 10.1021/acs.langmuir.1c02224] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/18/2021] [Indexed: 06/13/2023]
Abstract
Poly(diisopropylaminoethyl methacrylate) (PDPA) is a pH- and thermally responsive water-soluble polymer. This study deepens the understanding of its phase separation behavior upon heating. Phase separation upon heating was investigated in salt solutions of varying pH and ionic strength. The effect of the counterion on the phase transition upon heating is clearly demonstrated for chloride-, phosphate-, and citrate-anions. Phase separation did not occur in pure water. The buffer solutions exhibited similar cloud points, but phase separation occurred in different pH ranges and with different mechanisms. The solution behavior of a block copolymer comprising poly(dimethylaminoethyl methacrylate) (PDMAEMA) and PDPA was investigated. Since the PDMAEMA and PDPA blocks phase separate within different pH- and temperature ranges, the block copolymer forms micelle-like structures at high temperature or pH.
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Affiliation(s)
- Linda Salminen
- Department
of Chemistry, University of Helsinki, P.O. Box 55, A.I. Virtasen aukio
1, FIN-00014 HY Helsinki, Finland
| | - Erno Karjalainen
- VTT
Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 VTT Espoo, Finland
| | - Vladimir Aseyev
- Department
of Chemistry, University of Helsinki, P.O. Box 55, A.I. Virtasen aukio
1, FIN-00014 HY Helsinki, Finland
| | - Heikki Tenhu
- Department
of Chemistry, University of Helsinki, P.O. Box 55, A.I. Virtasen aukio
1, FIN-00014 HY Helsinki, Finland
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4
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Zhao R, Fu C, Wang Z, Pan M, Ma B, Yin Q, Chen B, Liu J, Xia H, Wan F, Wang L, Zhang Q, Wang Y. A pH-Responsive Nanoparticle Library with Precise pH Tunability by Co-Polymerization with Non-Ionizable Monomers. Angew Chem Int Ed Engl 2022; 61:e202200152. [PMID: 35218123 DOI: 10.1002/anie.202200152] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Indexed: 12/22/2022]
Abstract
Precise monitoring of the subtle pH fluctuation during biological events remains a big challenge. Previously, we reported an ultra-pH-sensitive (UPS) nanoprobe library with a sharp pH response using co-polymerization of two tertiary amine-containing monomers with distinct pKa . Currently, we have generalized the UPS nanoparticle library with tunable pH transitions (pHt ) by copolymerization of a tertiary amine-containing monomer with a series of non-ionizable monomers. The pHt of nanoparticles is fine-tuned by the non-ionizable monomers with different hydrophobicity. Each non-ionizable monomer presents a constant contribution to pH tunability regardless of tertiary amine-containing monomers. Based on this strategy, we produced two libraries of nanoprobes with continuous pHt covering the entire physiological pH range (5.0-7.4) for fluorescent imaging of endosome maturation and cancers. This generalized strategy provides a powerful toolkit for biological studies and cancer theranostics.
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Affiliation(s)
- Ruiyang Zhao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.,Beijing Key Laboratory of Molecular Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Chuanxun Fu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.,Beijing Key Laboratory of Molecular Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Zenghui Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.,Beijing Key Laboratory of Molecular Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Meijie Pan
- Beijing Key Laboratory of Molecular Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Bin Ma
- Beijing Key Laboratory of Molecular Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Qingqing Yin
- Beijing Key Laboratory of Molecular Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Binlong Chen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.,Beijing Key Laboratory of Molecular Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Jianxiong Liu
- Beijing Key Laboratory of Molecular Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Heming Xia
- Beijing Key Laboratory of Molecular Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Fangjie Wan
- Beijing Key Laboratory of Molecular Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Letong Wang
- Beijing Key Laboratory of Molecular Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Qiang Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.,Beijing Key Laboratory of Molecular Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Yiguang Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.,Beijing Key Laboratory of Molecular Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
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5
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Zhao R, Fu C, Wang Z, Pan M, Ma B, Yin Q, Chen B, Liu J, Xia H, Wan F, Wang L, Zhang Q, Wang Y. A pH‐Responsive Nanoparticle Library with Precise pH Tunability by Co‐Polymerization with Non‐Ionizable Monomers. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ruiyang Zhao
- State Key Laboratory of Natural and Biomimetic Drugs: Peking University School of Pharmaceutical Sciences School of pharmaceutical sciences CHINA
| | - Chuanxun Fu
- State Key Laboratory of Natural and Biomimetic Drugs: Peking University School of Pharmaceutical Sciences School of pharmaceutical sciences CHINA
| | - Zenghui Wang
- State Key Laboratory of Natural and Biomimetic Drugs: Peking University School of Pharmaceutical Sciences School of pharmaceutical sciences CHINA
| | - Meijie Pan
- State Key Laboratory of Natural and Biomimetic Drugs: Peking University School of Pharmaceutical Sciences School of pharmaceutical sciences CHINA
| | - Bin Ma
- State Key Laboratory of Natural and Biomimetic Drugs: Peking University School of Pharmaceutical Sciences School of pharmaceutical sciences CHINA
| | - Qingqing Yin
- State Key Laboratory of Natural and Biomimetic Drugs: Peking University School of Pharmaceutical Sciences School of pharmaceutical sciences CHINA
| | - Binlong Chen
- State Key Laboratory of Natural and Biomimetic Drugs: Peking University School of Pharmaceutical Sciences School of pharmaceutical sciences CHINA
| | - Jianxiong Liu
- State Key Laboratory of Natural and Biomimetic Drugs: Peking University School of Pharmaceutical Sciences School of pharmaceutical sciences CHINA
| | - Heming Xia
- State Key Laboratory of Natural and Biomimetic Drugs: Peking University School of Pharmaceutical Sciences School of pharmaceutical sciences CHINA
| | - Fangjie Wan
- State Key Laboratory of Natural and Biomimetic Drugs: Peking University School of Pharmaceutical Sciences School of pharmaceutical sciences CHINA
| | - Letong Wang
- State Key Laboratory of Natural and Biomimetic Drugs: Peking University School of Pharmaceutical Sciences School of pharmaceutical sciences CHINA
| | - Qiang Zhang
- State Key Laboratory of Natural and Biomimetic Drugs: Peking University School of Pharmaceutical Sciences School of pharmaceutical sciences CHINA
| | - Yiguang Wang
- Peking University School of Pharmaceutical Sciences #38 Xueyuan Rd., Haidian District 100191 Beijing CHINA
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6
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Schmidt BVKJ. Multicompartment Hydrogels. Macromol Rapid Commun 2022; 43:e2100895. [PMID: 35092101 DOI: 10.1002/marc.202100895] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/27/2022] [Indexed: 11/11/2022]
Abstract
Hydrogels belong to the most promising materials in polymer and materials science at the moment. As they feature soft and tissue-like character as well as high water-content, a broad range of applications are addressed with hydrogels, e.g. tissue engineering and wound dressings but also soft robotics, drug delivery, actuators and catalysis. Ways to tailor hydrogel properties are crosslinking mechanism, hydrogel shape and reinforcement, but new features can be introduced by variation of hydrogel composition as well, e.g. via monomer choice, functionalization or compartmentalization. Especially, multicompartment hydrogels drive progress towards complex and highly functional soft materials. In the present review the latest developments in multicompartment hydrogels are highlighted with a focus on three types of compartments, i.e. micellar/vesicular, droplets or multi-layers including various sub-categories. Furthermore, several morphologies of compartmentalized hydrogels and applications of multicompartment hydrogels will be discussed as well. Finally, an outlook towards future developments of the field will be given. The further development of multicompartment hydrogels is highly relevant for a broad range of applications and will have a significant impact on biomedicine and organic devices. This article is protected by copyright. All rights reserved.
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7
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Kurokawa N, Endo F, Bito K, Maeda T, Hotta A. Antithrombogenic poly(2-methoxyethyl acrylate) elastomer via triblock copolymerization with poly(methyl methacrylate). POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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8
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Dai M, Goudounet G, Zhao H, Garbay B, Garanger E, Pecastaings G, Schultze X, Lecommandoux S. Thermosensitive Hybrid Elastin-like Polypeptide-Based ABC Triblock Hydrogel. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01744] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Michèle Dai
- LCPO, UMR 5629, Univ. Bordeaux, CNRS, Bordeaux INP, F-33600 Pessac, France
- L’Oréal Recherche Avancée, 1 avenue Eugène Schueller, 93600 Aulnay-sous-Bois, France
| | | | - Hang Zhao
- LCPO, UMR 5629, Univ. Bordeaux, CNRS, Bordeaux INP, F-33600 Pessac, France
| | - Bertrand Garbay
- LCPO, UMR 5629, Univ. Bordeaux, CNRS, Bordeaux INP, F-33600 Pessac, France
| | - Elisabeth Garanger
- LCPO, UMR 5629, Univ. Bordeaux, CNRS, Bordeaux INP, F-33600 Pessac, France
| | - Gilles Pecastaings
- LCPO, UMR 5629, Univ. Bordeaux, CNRS, Bordeaux INP, F-33600 Pessac, France
| | - Xavier Schultze
- L’Oréal Recherche Avancée, 1 avenue Eugène Schueller, 93600 Aulnay-sous-Bois, France
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9
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Dhara (Ganguly) M. Smart polymeric nanostructures for targeted delivery of therapeutics. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2020. [DOI: 10.1080/10601325.2020.1842766] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Mahua Dhara (Ganguly)
- Department of Chemistry, Vivekananda Satavarshiki Mahavidyalaya, Jhargram, West Bengal, India
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10
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Park SJ, Akimoto J, Sakakibara N, Kobatake E, Ito Y. Thermally Induced Switch of Coupling Reaction Using the Morphological Change of a Thermoresponsive Polymer on a Reactive Heteroarmed Nanoparticle. ACS APPLIED MATERIALS & INTERFACES 2020; 12:49165-49173. [PMID: 32991144 DOI: 10.1021/acsami.0c12875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Control of the cross-linking reaction is imperative when developing a sophisticated in situ forming hydrogel in the body. In this study, a heteroarmed thermoresponsive (TR) nanoparticle was designed to investigate the mechanism of controlling reactivity of the functional groups introduced into the nanoparticles. The coupling reaction was suppressed/proceeded by utilizing temperature-induced morphological changes of the TR polymer. The heteroarmed TR nanoparticle was prepared by the coassembly of amphiphilic block copolymers possessing both a TR segment and hydrophilic segment with reactive functional groups of succinimide. The longer TR chain on the nanoparticle covered the succinimide group and suppressed the reaction with the primary amine on the external nanoparticle. In contrast, the coupling reaction was promoted at a high temperature to create the chemical cross-linking structure between the nanoparticles because of the exposure of the succinimide group on the surface of the particle as a consequence of the morphological change of the TR polymer. In addition, the thermally controlled chemical reaction modulated initiation of the gelation using a highly concentrated nanoparticle solution. The heteroarmed TR nanoparticle offers great practical advantages for clinical uses, such as embolization agents, through precise control of the reaction.
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Affiliation(s)
- So Jung Park
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Midori-ku, Yokohama 226-8502, Japan
| | - Jun Akimoto
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Naoki Sakakibara
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Faculty of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
- Department of Cardiovascular Surgery, Edogawa Hospital, 2-24-18 Higashikoiwa, Edogawa-ku, Tokyo 133-0052. Japan
| | - Eiry Kobatake
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Midori-ku, Yokohama 226-8502, Japan
| | - Yoshihiro Ito
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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11
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Song S, Puzhitsky M, Ye S, Abtahi M, Rastogi CK, Lu E, Hicks G, Manners I, Winnik MA. Crystallization-Driven Self-Assembly of Amphiphilic Triblock Terpolymers With Two Corona-Forming Blocks of Distinct Hydrophilicities. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01414] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Shaofei Song
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Matthew Puzhitsky
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Shuyang Ye
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Mahtab Abtahi
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | | | - Elsa Lu
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Garion Hicks
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Ian Manners
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada
| | - Mitchell A. Winnik
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E2, Canada
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12
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Li T, Huang F, Diaz-Dussan D, Zhao J, Srinivas S, Narain R, Tian W, Hao X. Preparation and Characterization of Thermoresponsive PEG-Based Injectable Hydrogels and Their Application for 3D Cell Culture. Biomacromolecules 2020; 21:1254-1263. [DOI: 10.1021/acs.biomac.9b01743] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Tian Li
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, China
- CSIRO Manufacturing, Clayton, VIC 3168, Australia
| | - Fei Huang
- CSIRO Manufacturing, Clayton, VIC 3168, Australia
| | - Diana Diaz-Dussan
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Jianyang Zhao
- CSIRO Manufacturing, Clayton, VIC 3168, Australia
- Institute for Frontier Materials Geelong, Deakin University, Geelong, Victoria 3216, Australia
| | - Shruti Srinivas
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Ravin Narain
- CSIRO Manufacturing, Clayton, VIC 3168, Australia
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Wendy Tian
- CSIRO Manufacturing, Clayton, VIC 3168, Australia
| | - Xiaojuan Hao
- CSIRO Manufacturing, Clayton, VIC 3168, Australia
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13
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Kupfervermittelte radikalische Polymerisation mit reversibler Deaktivierung in wässrigen Medien. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802091] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Jones GR, Anastasaki A, Whitfield R, Engelis N, Liarou E, Haddleton DM. Copper‐Mediated Reversible Deactivation Radical Polymerization in Aqueous Media. Angew Chem Int Ed Engl 2018; 57:10468-10482. [DOI: 10.1002/anie.201802091] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Glen R. Jones
- University of WarwickDepartment of Chemistry Library Road Coventry CV4 7AL UK
| | - Athina Anastasaki
- Materials Research LaboratoryUniversity of California Santa Barbara California 93106 USA
| | - Richard Whitfield
- University of WarwickDepartment of Chemistry Library Road Coventry CV4 7AL UK
| | - Nikolaos Engelis
- University of WarwickDepartment of Chemistry Library Road Coventry CV4 7AL UK
| | - Evelina Liarou
- University of WarwickDepartment of Chemistry Library Road Coventry CV4 7AL UK
| | - David M. Haddleton
- University of WarwickDepartment of Chemistry Library Road Coventry CV4 7AL UK
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15
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Nagao M, Sengupta J, Diaz-Dussan D, Adam M, Wu M, Acker J, Ben R, Ishihara K, Zeng H, Miura Y, Narain R. Synthesis of Highly Biocompatible and Temperature-Responsive Physical Gels for Cryopreservation and 3D Cell Culture. ACS APPLIED BIO MATERIALS 2018; 1:356-366. [DOI: 10.1021/acsabm.8b00096] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Masanori Nagao
- Department of Chemical Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | | | | | - Madeleine Adam
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | | | - Jason Acker
- Centre for Innovation, Canadian Blood Services, Edmonton, Alberta T6G 2R8, Canada
| | - Robert Ben
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Kazuhiko Ishihara
- Department of Materials Engineering, The University of Tokyo, Tokyo 113-8654, Japan
| | | | - Yoshiko Miura
- Department of Chemical Engineering, Kyushu University, Fukuoka 819-0395, Japan
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16
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Tsitsilianis C, Serras G, Ko CH, Jung F, Papadakis CM, Rikkou-Kalourkoti M, Patrickios CS, Schweins R, Chassenieux C. Thermoresponsive Hydrogels Based on Telechelic Polyelectrolytes: From Dynamic to “Frozen” Networks. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00193] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
| | - George Serras
- Department of Chemical Engineering, University of Patras, 26504 Patras, Greece
| | - Chia-Hsin Ko
- Physik-Department, Physik weicher Materie, Technische Universität München, James-Franck Str. 1, 85748, Garching, Germany
| | - Florian Jung
- Physik-Department, Physik weicher Materie, Technische Universität München, James-Franck Str. 1, 85748, Garching, Germany
| | - Christine M. Papadakis
- Physik-Department, Physik weicher Materie, Technische Universität München, James-Franck Str. 1, 85748, Garching, Germany
| | | | - Costas S. Patrickios
- Department of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
| | - Ralf Schweins
- Large Scale Structures Group, Institut Laue-Langevin, DS/LSS, 71 Avenue des Martyrs, CS 20 156, 38042 Grenoble, France
| | - Christophe Chassenieux
- Le Mans Université, IMMM UMR CNRS6283, Département Polymères, Colloı̈des, Interfaces, av. O. Messiaen, Cedex 9 72085 Le Mans, France
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17
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Application of Nanoparticle Technology to Reduce the Anti-Microbial Resistance through β-Lactam Antibiotic-Polymer Inclusion Nano-Complex. Pharmaceuticals (Basel) 2018; 11:ph11010019. [PMID: 29439391 PMCID: PMC5874715 DOI: 10.3390/ph11010019] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 02/07/2018] [Accepted: 02/07/2018] [Indexed: 11/16/2022] Open
Abstract
Biocompatible polymeric materials with potential to form functional structures in association with different therapeutic molecules have a high potential for biological, medical and pharmaceutical applications. Therefore, the capability of the inclusion of nano-Complex formed between the sodium salt of poly(maleic acid-alt-octadecene) and a β-lactam drug (ampicillin trihydrate) to avoid the chemical and enzymatic degradation and enhance the biological activity were evaluated. PAM-18Na was produced and characterized, as reported previously. The formation of polymeric hydrophobic aggregates in aqueous solution was determined, using pyrene as a fluorescent probe. Furthermore, the formation of polymer-drug nano-complexes was characterized by Differential Scanning Calorimetry-DSC, viscometric, ultrafiltration/centrifugation assays, zeta potential and size measurements were determined by dynamic light scattering-DLS. The PAM-18Na capacity to avoid the chemical degradation was studied through stress stability tests. The enzymatic degradation was evaluated from a pure β-lactamase, while the biological degradation was determined by different β-lactamase producing Staphylococcus aureus strains. When ampicillin was associated with PAM-18Na, the half-life time in acidic conditions increased, whereas both the enzymatic degradation and the minimum inhibitory concentration decreased to a 90 and 75%, respectively. These results suggest a promissory capability of this polymer to protect the β-lactam drugs against chemical, enzymatic and biological degradation.
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18
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Madsen J, Madden G, Themistou E, Warren NJ, Armes SP. pH-Responsive diblock copolymers with two different fluorescent labels for simultaneous monitoring of micellar self-assembly and degree of protonation. Polym Chem 2018. [DOI: 10.1039/c8py00111a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Facile labelling of both blocks of a pH-responsive diblock copolymer with different fluorophores allows monitoring of polymer aggregation and deprotonation.
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Affiliation(s)
- Jeppe Madsen
- Department of Chemistry
- University of Sheffield
- Sheffield
- UK
- Danish Polymer Centre
| | | | - Efrosyni Themistou
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast BT9 5AG
- UK
| | - Nicholas J. Warren
- Department of Chemistry
- University of Sheffield
- Sheffield
- UK
- School of Chemical and Process Engineering
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19
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Hu L, Du M, Zhang J. Hemicellulose-Based Hydrogels Present Status and Application Prospects: A Brief Review. ACTA ACUST UNITED AC 2018. [DOI: 10.4236/ojf.2018.81002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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20
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Malo de Molina P, Gradzielski M. Gels Obtained by Colloidal Self-Assembly of Amphiphilic Molecules. Gels 2017; 3:E30. [PMID: 30920526 PMCID: PMC6318676 DOI: 10.3390/gels3030030] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 07/29/2017] [Accepted: 07/31/2017] [Indexed: 11/17/2022] Open
Abstract
Gelation in water-based systems can be achieved in many different ways. This review focusses on ways that are based on self-assembly, i.e., a bottom-up approach. Self-assembly naturally requires amphiphilic molecules and accordingly the systems described here are based on surfactants and to some extent also on amphiphilic copolymers. In this review we are interested in cases of low and moderate concentrations of amphiphilic material employed to form hydrogels. Self-assembly allows for various approaches to achieve gelation. One of them is via increasing the effective volume fraction by encapsulating solvent, as in vesicles. Vesicles can be constructed in various morphologies and the different cases are discussed here. However, also the formation of very elongated worm-like micelles can lead to gelation, provided the structural relaxation times of these systems is long enough. Alternatively, one may employ amphiphilic copolymers of hydrophobically modified water soluble polymers that allow for network formation in solution by self-assembly due to having several hydrophobic modifications per polymer. Finally, one may combine such polymers with surfactant self-assemblies and thereby produce interconnected hybrid network systems with corresponding gel-like properties. As seen here there is a number of conceptually different approaches to achieve gelation by self-assembly and they may even become combined for further variation of the properties. These different approaches are described in this review to yield a comprehensive overview regarding the options for achieving gel formation by self-assembly.
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Affiliation(s)
- Paula Malo de Molina
- Centro de Física de Materiales (CSIC, UPV/EHU) and Materials Physics Center MPC, Paseo Manuel de Lardizabal 5, E-20018 San Sebastián, Spain.
| | - Michael Gradzielski
- Institut für Physikalische & Theoretische Chemie-Stranski Laboratorium, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany.
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21
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Yu B, Fan W, Zhao Y. Gelation of Triblock Copolymers in Aqueous Solution through CO2
-Triggered Electrostatic Interaction. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700146] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Bing Yu
- Département de chimie; Université de Sherbrooke; Sherbrooke QC J1K 2R1 Canada
| | - Weizheng Fan
- Département de chimie; Université de Sherbrooke; Sherbrooke QC J1K 2R1 Canada
| | - Yue Zhao
- Département de chimie; Université de Sherbrooke; Sherbrooke QC J1K 2R1 Canada
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22
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Azmy B, Standen G, Kristova P, Flint A, Lewis AL, Salvage JP. Nanostructured DPA-MPC-DPA triblock copolymer gel for controlled drug release of ketoprofen and spironolactone. ACTA ACUST UNITED AC 2017; 69:978-990. [PMID: 28480594 DOI: 10.1111/jphp.12733] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 03/26/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Uncontrolled rapid release of drugs can reduce their therapeutic efficacy and cause undesirable toxicity; however, controlled release from reservoir materials helps overcome this issue. The aims of this study were to determine the release profiles of ketoprofen and spironolactone from a pH-responsive self-assembling DPA-MPC-DPA triblock copolymer gel and elucidate underlying physiochemical properties. METHODS Drug release profiles from DPA50 -MPC250 -DPA50 gel (pH 7.5), over 32 h (37 °C), were determined using UV-Vis spectroscopy. Nanoparticle size was measured by dynamic light scattering (DLS) and critical micelle concentration (CMC) by pyrene fluorescence. Polymer gel viscosity was examined via rheology, nanoparticle morphology investigated using scanning transmission electron microscopy (STEM) and the gel matrix observed using cryo-scanning electron microscopy (Cryo-SEM). KEY FINDINGS DPA50 -MPC250 -DPA50 copolymer (15% w/v) formed a free-standing gel (pH 7.5) that controlled drug release relative to free drugs. The copolymer possessed a low CMC, nanoparticle size increased with copolymer concentration, and DLS data were consistent with STEM. The gel displayed thermostable viscosity at physiological temperatures, and the gel matrix was a nanostructured aggregation of smaller nanoparticles. CONCLUSIONS The DPA50 -MPC250 -DPA50 copolymer gel could be used as a drug delivery system to provide the controlled drug release of ketoprofen and spironolactone.
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Affiliation(s)
- Bahaa Azmy
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| | - Guy Standen
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| | - Petra Kristova
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| | - Andrew Flint
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| | - Andrew L Lewis
- Biocompatibles UK Ltd, a BTG International plc Group Company, Innovation Group, Lakeview, Riverside Way, Watchmoor Park, Camberley, UK
| | - Jonathan P Salvage
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
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23
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Temperature-dependent self-assembly and rheological behavior of a thermoreversible pmma-Pn
BA-PMMA triblock copolymer gel. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/polb.24336] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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24
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Yu Y, Sun X, Zhang R, Yuan S, Lu Q, Wu Z. Synthesis and properties of amphiphilic thermo-sensitive block copolymers. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1219-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Lauber L, Colombani O, Nicolai T, Chassenieux C. pH-Controlled Rheological Properties of Mixed Amphiphilic Triblock Copolymers. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01600] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lionel Lauber
- IMMM-UMR CNRS 6283, Equipe
Polymères, Colloı̈des et Interfaces, Université du Maine, av. O.
Messiaen, 72085 Le Mans, cedex 9, France
| | - Olivier Colombani
- IMMM-UMR CNRS 6283, Equipe
Polymères, Colloı̈des et Interfaces, Université du Maine, av. O.
Messiaen, 72085 Le Mans, cedex 9, France
| | - Taco Nicolai
- IMMM-UMR CNRS 6283, Equipe
Polymères, Colloı̈des et Interfaces, Université du Maine, av. O.
Messiaen, 72085 Le Mans, cedex 9, France
| | - Christophe Chassenieux
- IMMM-UMR CNRS 6283, Equipe
Polymères, Colloı̈des et Interfaces, Université du Maine, av. O.
Messiaen, 72085 Le Mans, cedex 9, France
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26
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Yang Q, He C, Zhang Z, Tan L, Liu B, Zhu Z, Shao Z, Gong B, Shen YM. Redox-responsive flower-like micelles of poly(l-lactic acid)-b-poly(ethylene glycol)-b-poly(l-lactic acid) for intracellular drug delivery. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.03.030] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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27
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Frequent mechanical stress suppresses proliferation of mesenchymal stem cells from human bone marrow without loss of multipotency. Sci Rep 2016; 6:24264. [PMID: 27080570 PMCID: PMC4832181 DOI: 10.1038/srep24264] [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: 07/30/2015] [Accepted: 03/23/2016] [Indexed: 12/25/2022] Open
Abstract
Mounting evidence indicated that human mesenchymal stem cells (hMSCs) are responsive not only to biochemical but also to physical cues, such as substrate topography and stiffness. To simulate the dynamic structures of extracellular environments of the marrow in vivo, we designed a novel surrogate substrate for marrow derived hMSCs based on physically cross-linked hydrogels whose elasticity can be adopted dynamically by chemical stimuli. Under frequent mechanical stress, hMSCs grown on our hydrogel substrates maintain the expression of STRO-1 over 20 d, irrespective of the substrate elasticity. On exposure to the corresponding induction media, these cultured hMSCs can undergo adipogenesis and osteogenesis without requiring cell transfer onto other substrates. Moreover, we demonstrated that our surrogate substrate suppresses the proliferation of hMSCs by up to 90% without any loss of multiple lineage potential by changing the substrate elasticity every 2nd days. Such “dynamic in vitro niche” can be used not only for a better understanding of the role of dynamic mechanical stresses on the fate of hMSCs but also for the synchronized differentiation of adult stem cells to a specific lineage.
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28
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Li Y, Ye Z, Shen L, Xu Y, Zhu A, Wu P, An Z. Formation of Multidomain Hydrogels via Thermally Induced Assembly of PISA-Generated Triblock Terpolymer Nanogels. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02538] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Youcheng Li
- Institute
of Nanochemistry and Nanobiology, College of Environmental and Chemical
Engineering, Shanghai University, Shanghai 200444, China
| | - Zhangxin Ye
- Department
of Macromolecular Science and Laboratory for Advanced Materials, Fudan University, Shanghai 200433, China
| | - Liangliang Shen
- Institute
of Nanochemistry and Nanobiology, College of Environmental and Chemical
Engineering, Shanghai University, Shanghai 200444, China
| | - Yuanyuan Xu
- Institute
of Nanochemistry and Nanobiology, College of Environmental and Chemical
Engineering, Shanghai University, Shanghai 200444, China
| | - Anqi Zhu
- Institute
of Nanochemistry and Nanobiology, College of Environmental and Chemical
Engineering, Shanghai University, Shanghai 200444, China
| | - Peiyi Wu
- Department
of Macromolecular Science and Laboratory for Advanced Materials, Fudan University, Shanghai 200433, China
| | - Zesheng An
- Institute
of Nanochemistry and Nanobiology, College of Environmental and Chemical
Engineering, Shanghai University, Shanghai 200444, China
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29
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Xuan S, Lee CU, Chen C, Doyle AB, Zhang Y, Guo L, John VT, Hayes D, Zhang D. Thermoreversible and Injectable ABC Polypeptoid Hydrogels: Controlling the Hydrogel Properties through Molecular Design. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2016; 28:727-737. [PMID: 27458325 PMCID: PMC4957709 DOI: 10.1021/acs.chemmater.5b03528] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A series of ABC triblock copolypeptoids [i.e., poly(N-allyl glycine)-b-poly(N-methyl glycine)-b-poly(N-decyl glycine) (AMD)] with well-defined structure and varying composition have been synthesized by sequential primary amine-initiated ring-opening polymerization of the corresponding N-substituted N-carboxyanhydride monomers (Al-NCA, Me-NCA, and De-NCA). The ABC block copolypeptoids undergo sol-to-gel transitions with increasing temperature in water and biological media at low concentrations (2.5-10 wt %). The sol-gel transition is rapid and fully reversible with a narrow transition window, evidenced by the rheological measurements. The gelation temperature (Tgel) and mechanical stiffness of the hydrogels are highly tunable: Tgel in the 26.2-60.0 °C range, the storage modulus (G') and Young's modulus (E) in the 0.2-780 Pa and 0.5-2346 Pa range, respectively, at the physiological temperature (37 °C) can be readily accessed by controlling the block copolypeptoid composition and the polymer solution concentration. The hydrogel is injectable through a 24 gauge syringe needle and maintains their shape upon in contact with surfaces or water baths that are kept above the sol-gel transition temperature. The hydrogels exhibit minimal cytotoxicity toward human adipose derived stem cells (hASCs), evidenced from both alamarBlue and PicoGreen assays. Furthermore, quantitative PCR analysis revealed significant up-regulation of the Col2a1 gene and down-regulation of ANGPT1 gene, suggesting that the hydrogel exhibit biological activity in inducing chondrogenesis of hASCs. It was also demonstrated that the hydrogel can be used to quantitatively encapsulate water-soluble enzymes (e.g., horseradish peroxidase) by manipulating the sol-gel transition. The enzymatic activity of HRP remain unperturbed after encapsulation at 37 °C for up to 7 d, suggesting that the hydrogel does not adversely affect the enzyme structure and thereby the enzymatic activity. These results suggest that the polypeptoid hydrogel a promising synthetic platform for tissue engineering or protein storage applications.
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Affiliation(s)
- Sunting Xuan
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Chang-Uk Lee
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Cong Chen
- Department of Biological and Agricultural Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Andrew B. Doyle
- Department of Biological and Agricultural Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Yueheng Zhang
- Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana 70118, United States
| | - Li Guo
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Vijay T. John
- Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana 70118, United States
| | - Daniel Hayes
- Department of Biological and Agricultural Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Donghui Zhang
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, United States
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30
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Dai M, Frezzo JA, Sharma E, Chen R, Singh N, Yuvienco C, Caglar E, Xiao S, Saxena A, Montclare JK. Engineered Protein Polymer-Gold Nanoparticle Hybrid Materials for Small Molecule Delivery. JOURNAL OF NANOMEDICINE & NANOTECHNOLOGY 2016; 7:356. [PMID: 27081576 PMCID: PMC4828936 DOI: 10.4172/2157-7439.1000356] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We have fabricated protein polymer-gold nanoparticle (P-GNP) nanocomposites that exhibit enhanced binding and delivery properties of the small hydrophobic molecule drug, curcumin, to the model breast cancer cell line, MCF-7. These hybrid biomaterials are constructed via in situ GNP templated-synthesis with genetically engineered histidine tags. The P-GNP nanocomposites exhibit enhanced small molecule loading, sustained release and increased uptake by MCF-7 cells. When compared to the proteins polymers alone, the P-GNPs demonstrate a greater than 7-fold increase in curcumin binding, a nearly 50% slower release profile and more than 2-fold increase in cellular uptake of curcumin. These results suggest that P-GNP nanocomposites serve as promising candidates for drug delivery vehicles.
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Affiliation(s)
- Min Dai
- Department of Chemical and Biomolecular Engineering, NYU Tandon School of Engineering, Brooklyn, New York 11201, USA
| | - JA Frezzo
- Department of Chemical and Biomolecular Engineering, NYU Tandon School of Engineering, Brooklyn, New York 11201, USA
| | - E Sharma
- Department of Chemical and Biomolecular Engineering, NYU Tandon School of Engineering, Brooklyn, New York 11201, USA
| | - R Chen
- Department of Chemical and Biomolecular Engineering, NYU Tandon School of Engineering, Brooklyn, New York 11201, USA
| | - N Singh
- Department of Chemical and Biomolecular Engineering, NYU Tandon School of Engineering, Brooklyn, New York 11201, USA
| | - C Yuvienco
- Department of Chemical and Biomolecular Engineering, NYU Tandon School of Engineering, Brooklyn, New York 11201, USA
| | - E Caglar
- Department of Biology, Brooklyn College and Graduate Center, City University of New York, Brooklyn, New York 11210, USA
| | - S Xiao
- Department of Biology, Brooklyn College and Graduate Center, City University of New York, Brooklyn, New York 11210, USA
| | - A Saxena
- Department of Biology, Brooklyn College and Graduate Center, City University of New York, Brooklyn, New York 11210, USA
| | - JK Montclare
- Department of Chemical and Biomolecular Engineering, NYU Tandon School of Engineering, Brooklyn, New York 11201, USA
- Department of Chemistry, New York University, New York, New York 10003, USA
- Department of Biochemistry, SUNY Downstate Medical Center, Brooklyn, New York 11203, USA
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31
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Yong P, Yang Y, Wang Z, Yang L, Chen J. Diverse nanostructures and gel behaviours contained in a thermo- and dual-pH-sensitive ABC (PNIPAM–PAA–P4VP) terpolymer in an aqueous solution. RSC Adv 2016. [DOI: 10.1039/c6ra14682a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
PNIPAM-b-PAA-b-P4VP (NAV), a thermo- and dual-pH-sensitive ABC triblock copolymer, was synthesized via sequential reversible addition–fragmentation chain transfer (RAFT) polymerization and subsequent hydrolysis.
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Affiliation(s)
- Ping Yong
- Department of Chemical Engineering
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Yuejiao Yang
- Department of Chemical Engineering
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Zhiyong Wang
- Department of Chemical Engineering
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Liming Yang
- Department of Chemical Engineering
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Jie Chen
- Department of Chemical Engineering
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
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32
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Taktak F, Bütün V. Novel zwitterionic ABA-type triblock copolymer for pH- and salt-controlled release of risperidone. INT J POLYM MATER PO 2015. [DOI: 10.1080/00914037.2015.1099100] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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33
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Nakagawa H, Matsumoto Y, Matsumoto Y, Miwa Y, Nagasaki Y. Design of high-performance anti-adhesion agent using injectable gel with an anti-oxidative stress function. Biomaterials 2015; 69:165-73. [DOI: 10.1016/j.biomaterials.2015.08.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 08/07/2015] [Indexed: 01/13/2023]
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34
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Guo C, Bailey TS. Tailoring mechanical response through coronal layer overlap in tethered micelle hydrogel networks. SOFT MATTER 2015; 11:7345-7355. [PMID: 26271163 DOI: 10.1039/c5sm00122f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Tethered micelle hydrogel networks based on the solution assembly of amphiphilic ABA-type block copolymers are prevalent throughout the hydrogel literature. However, the mechanical response of such systems is often determined largely by the integrity of the micellar core produced during solution assembly, not by the elements of the network structure upon which it is based. Using a solvent-free fabrication method based on the melt-state self-assembly of sphere-forming polystyrene-b-poly(ethylene oxide) (SO) diblock and SOS triblock copolymers blends, we have been able to produce tethered micelle hydrogel networks with fully vitrified cores that enable the elements of the network structure to determine the mechanical response. Here, we explore the impact of using PEO midblocks of different lengths within the SOS tethers, in an effort to elucidate the role played by water content, tether concentration, and tether length in mechanical property determination. In doing so, we were able to establish coronal layer overlap as the primary contributing factor in regulating the dynamic elastic moduli exhibited by tethered micelle systems. Variation of either tether concentration or tether length could be used to tune the degree of coronal layer overlap, enabling direct and accurate control over hydrogel mechanical response. While such control is likely a unique feature of the melt-state fabrication approach applied here, the conclusions with respect to the role of coronal layer overlap and tether (bridging) concentration in determining the mechanical potential of the network should be applicable to all ABA-type tethered micelle systems, regardless of fabrication methodology.
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Affiliation(s)
- Chen Guo
- Department of Chemical & Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, Colorado 80523, USA.
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35
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Venault A, Huang CW, Zheng J, Chinnathambi A, Alharbi SA, Chang Y, Chang Y. Hemocompatible biomaterials of zwitterionic sulfobetaine hydrogels regulated with pH-responsive DMAEMA random sequences. INT J POLYM MATER PO 2015. [DOI: 10.1080/00914037.2015.1055632] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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36
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Monzel C, Veschgini M, Madsen J, Lewis AL, Armes SP, Tanaka M. Fine Adjustment of Interfacial Potential between pH-Responsive Hydrogels and Cell-Sized Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:8689-8696. [PMID: 26190346 DOI: 10.1021/acs.langmuir.5b01896] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We quantitatively determined interfacial potentials between cell-sized particles and stimulus-responsive hydrogels using a microinterferometer. The hydrogel is based on physically interconnected ABA triblock copolymer micelles comprising an inner biocompatible PMPC block and two outer pH-responsive PDPA blocks. The out-of-plane temporal fluctuation in the position of the cell-sized particles was calculated from changes in the interference pattern measured by Reflection Interference Contrast Microscopy (RICM), thus yielding the particle-substrate interaction potential V (Δh). Measurements in pH buffers ranging from 7.0 to 7.8 resulted in a systematic reduction in height of the potential minima ⟨Δh⟩ and a concomitant increase in the potential curvature V″ (Δh). The experimental data were analyzed by applying the modified Ross and Pincus model for polyelectrolytes, while accounting for gravitation, lubrication and van der Waals interactions. Elastic moduli calculated from V″ (Δh) were in good agreement with those measured by Atomic Force Microscopy. The ability to fine-tune both the gel elasticity and the interfacial potential at around physiological pH makes such triblock copolymer hydrogels a promising biocompatible substrate for dynamic switching of cell-material interactions.
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Affiliation(s)
- Cornelia Monzel
- †Physical Chemistry of Biosystems, Institute of Physical Chemistry, University of Heidelberg, 69120 Heidelberg, Germany
| | - Mariam Veschgini
- †Physical Chemistry of Biosystems, Institute of Physical Chemistry, University of Heidelberg, 69120 Heidelberg, Germany
| | - Jeppe Madsen
- ‡Department of Chemistry, Dainton Building, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, United Kingdom
| | - Andrew L Lewis
- §Biocompatibles UK, Ltd., Chapman House, Farnham Business Park, Weydon Lane, Farnham, Surrey GU9 8 QL, United Kingdom
| | - Steven P Armes
- ‡Department of Chemistry, Dainton Building, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, United Kingdom
| | - Motomu Tanaka
- †Physical Chemistry of Biosystems, Institute of Physical Chemistry, University of Heidelberg, 69120 Heidelberg, Germany
- ∥Institute for Integrated Cell-Material Sciences (WPI iCeMS), Kyoto University, 606-8501, Kyoto, Japan
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37
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Clarkson CG, Lovett JR, Madsen J, Armes SP, Geoghegan M. Characterization of Diblock Copolymer Order-Order Transitions in Semidilute Aqueous Solution Using Fluorescence Correlation Spectroscopy. Macromol Rapid Commun 2015; 36:1572-7. [DOI: 10.1002/marc.201500208] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 05/15/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Christopher G. Clarkson
- Department of Physics and Astronomy; University of Sheffield; Hounsfield Road Sheffield S3 7RH UK
| | - Joseph R. Lovett
- Department of Chemistry; University of Sheffield; Brook Hill Sheffield S3 7HF UK
| | - Jeppe Madsen
- Department of Chemistry; University of Sheffield; Brook Hill Sheffield S3 7HF UK
| | - Steven P. Armes
- Department of Chemistry; University of Sheffield; Brook Hill Sheffield S3 7HF UK
| | - Mark Geoghegan
- Department of Physics and Astronomy; University of Sheffield; Hounsfield Road Sheffield S3 7RH UK
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38
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Ishii S, Kaneko J, Nagasaki Y. Dual Stimuli-Responsive Redox-Active Injectable Gel by Polyion Complex Based Flower Micelles for Biomedical Applications. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00305] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shiro Ishii
- Department
of Materials Science, Graduate School of Pure and Applied
Sciences, ‡Master’s School of Medical Sciences, Graduate School of Comprehensive
Human Sciences, and §Satellite Laboratory, International Center for Materials Nanoarchitectonics
(WPI-MANA), National Institute for Materials Science (NIMS), University of Tsukuba, Tennoudai 1-1-1, Tsukuba 305-8573, Japan
| | - Junya Kaneko
- Department
of Materials Science, Graduate School of Pure and Applied
Sciences, ‡Master’s School of Medical Sciences, Graduate School of Comprehensive
Human Sciences, and §Satellite Laboratory, International Center for Materials Nanoarchitectonics
(WPI-MANA), National Institute for Materials Science (NIMS), University of Tsukuba, Tennoudai 1-1-1, Tsukuba 305-8573, Japan
| | - Yukio Nagasaki
- Department
of Materials Science, Graduate School of Pure and Applied
Sciences, ‡Master’s School of Medical Sciences, Graduate School of Comprehensive
Human Sciences, and §Satellite Laboratory, International Center for Materials Nanoarchitectonics
(WPI-MANA), National Institute for Materials Science (NIMS), University of Tsukuba, Tennoudai 1-1-1, Tsukuba 305-8573, Japan
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39
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Inoue S, Frank V, Hörning M, Kaufmann S, Yoshikawa HY, Madsen JP, Lewis AL, Armes SP, Tanaka M. Live cell tracking of symmetry break in actin cytoskeleton triggered by abrupt changes in micromechanical environments. Biomater Sci 2015; 3:1539-44. [DOI: 10.1039/c5bm00205b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stimulus responsive hydrogels and live cell imaging allow for the quantitative parameterization of symmetry breaking in remodelling actin cytoskeleton.
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Affiliation(s)
- S. Inoue
- Physical Chemistry of Biosystems
- Institute of Physical Chemistry
- University of Heidelberg
- D69120 Heidelberg
- Germany
| | - V. Frank
- Physical Chemistry of Biosystems
- Institute of Physical Chemistry
- University of Heidelberg
- D69120 Heidelberg
- Germany
| | - M. Hörning
- Institute for Integrated Cell-Material Sciences (WPI iCeMS)
- Kyoto University
- Kyoto 606-8501
- Japan
| | - S. Kaufmann
- Physical Chemistry of Biosystems
- Institute of Physical Chemistry
- University of Heidelberg
- D69120 Heidelberg
- Germany
| | - H. Y. Yoshikawa
- Department of Chemistry
- Saitama University
- Saitama 338-8570
- Japan
| | - J. P. Madsen
- Department of Chemistry
- Dainton Building
- University of Sheffield
- Sheffield
- UK
| | | | - S. P. Armes
- Department of Chemistry
- Dainton Building
- University of Sheffield
- Sheffield
- UK
| | - M. Tanaka
- Physical Chemistry of Biosystems
- Institute of Physical Chemistry
- University of Heidelberg
- D69120 Heidelberg
- Germany
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40
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41
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Dong Y, Zhang C, Wu L, Chen Y, Hu Y. Self-Storage: A Novel Family of Stimuli-Responsive Polymer Materials for Optical and Electrochemical Switching. Macromol Rapid Commun 2014; 35:1943-8. [DOI: 10.1002/marc.201400356] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Revised: 08/31/2014] [Indexed: 12/31/2022]
Affiliation(s)
- Yixiao Dong
- School of Materials Science and Engineering; Wuhan University of Technology; 122 Luoshi Road Wuhan 430070 China
| | - Chaocan Zhang
- School of Materials Science and Engineering; Wuhan University of Technology; 122 Luoshi Road Wuhan 430070 China
| | - Lili Wu
- School of Materials Science and Engineering; Wuhan University of Technology; 122 Luoshi Road Wuhan 430070 China
| | - Yanjun Chen
- School of Materials Science and Engineering; Wuhan University of Technology; 122 Luoshi Road Wuhan 430070 China
| | - Yuanyuan Hu
- School of Materials Science and Engineering; Wuhan University of Technology; 122 Luoshi Road Wuhan 430070 China
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42
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Henn DM, Wright RAE, Woodcock JW, Hu B, Zhao B. Tertiary-amine-containing thermo- and pH-sensitive hydrophilic ABA triblock copolymers: effect of different tertiary amines on thermally induced sol-gel transitions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:2541-2550. [PMID: 24548271 DOI: 10.1021/la4049924] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This Article reports on the synthesis of a series of well-defined, tertiary-amine-containing ABA triblock copolymers, composed of a poly(ethylene oxide) (PEO) central block and thermo- and pH-sensitive outer blocks, and the study of the effect of different tertiary amines on thermally induced sol-gel transition temperatures (T(sol-gel)) of their 10 wt % aqueous solutions. The doubly responsive ABA triblock copolymers were prepared from a difunctional PEO macroinitiator by atom transfer radical polymerization of methoxydi(ethylene glycol) methacrylate and ethoxydi(ethylene glycol) methacrylate at a feed molar ratio of 30:70 with ∼5 mol % of either N,N-diethylaminoethyl methacrylate (DEAEMA), N,N-diisopropylaminoethyl methacrylate, or N,N-di(n-butyl)aminoethyl methacrylate. The chain lengths of thermosensitive outer blocks and the molar contents of tertiary amines were very similar for all copolymers. Using rheological measurements, we determined the pH dependences of T(sol-gel) of 10 wt % aqueous solutions of these copolymers in a phosphate buffer. The T(sol-gel) versus pH curves of all polymers exhibited a sigmoidal shape. The T(sol-gel) increased with decreasing pH; the changes were small on both high and low pH sides. At a specific pH, the T(sol-gel) decreased with increasing the hydrophobicity of the tertiary amine, and upon decreasing pH the onset pH value for the T(sol-gel) to begin to increase noticeably was lower for the more hydrophobic tertiary amine-containing copolymer. In addition, we studied the effect of different tertiary amines on the release behavior of FITC-dextran from 10 wt % micellar gels in an acidic medium at 37 and 27 °C. The release profiles for three studied hydrogels at 37 °C were essentially the same, suggesting that the release was dominated by the diffusion of FITC-dextran. At 27 °C, the release was significantly faster for the DEAEMA-containing copolymer, indicating that both diffusion and gel dissolution contributed to the release at this temperature.
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Affiliation(s)
- Daniel M Henn
- Department of Chemistry, University of Tennessee , Knoxville, Tennessee 37996, United States
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43
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Tamura A, Tanaka H, Yui N. Supramolecular flower micelle formation of polyrotaxane-containing triblock copolymers prepared from macro-chain transfer agents bearing molecular hooks. Polym Chem 2014. [DOI: 10.1039/c4py00379a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A precise synthesis of polyrotaxanes (PRX)-containing triblock copolymers was achieved using PRX macro-chain transfer agents with terminal hooks. Also, polymeric micelle formation of them in aqueous solution was investigated.
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Affiliation(s)
- Atsushi Tamura
- Department of Organic Biomaterials
- Institute of Biomaterials and Bioengineering
- Tokyo Medical and Dental University
- Chiyoda, Japan
| | - Hajime Tanaka
- Department of Organic Biomaterials
- Institute of Biomaterials and Bioengineering
- Tokyo Medical and Dental University
- Chiyoda, Japan
| | - Nobuhiko Yui
- Department of Organic Biomaterials
- Institute of Biomaterials and Bioengineering
- Tokyo Medical and Dental University
- Chiyoda, Japan
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44
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Cunningham VJ, Ratcliffe LPD, Blanazs A, Warren NJ, Smith AJ, Mykhaylyk OO, Armes SP. Tuning the critical gelation temperature of thermo-responsive diblock copolymer worm gels. Polym Chem 2014. [DOI: 10.1039/c4py00856a] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tuning the thermo-responsive behavior of statistical diblock copolymer worms.
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Affiliation(s)
| | | | - A. Blanazs
- Department of Chemistry
- University of Sheffield
- Sheffield, UK
| | - N. J. Warren
- Department of Chemistry
- University of Sheffield
- Sheffield, UK
| | | | | | - S. P. Armes
- Department of Chemistry
- University of Sheffield
- Sheffield, UK
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45
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Pua ML, Yoshitomi T, Chonpathompikunlert P, Hirayama A, Nagasaki Y. Redox-active injectable gel using thermo-responsive nanoscale polyion complex flower micelle for noninvasive treatment of local inflammation. J Control Release 2013; 172:914-20. [DOI: 10.1016/j.jconrel.2013.10.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 10/03/2013] [Accepted: 10/06/2013] [Indexed: 12/26/2022]
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46
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Charbonneau C, Nicolai T, Chassenieux C, Colombani O, Miriam de Souza Lima M. pH-Sensitive hydrogels formed by self-assembled amphiphilic triblock copolyelectrolytes. REACT FUNCT POLYM 2013. [DOI: 10.1016/j.reactfunctpolym.2012.12.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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47
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Lin Z, Cao S, Chen X, Wu W, Li J. Thermoresponsive hydrogels from phosphorylated ABA triblock copolymers: a potential scaffold for bone tissue engineering. Biomacromolecules 2013; 14:2206-14. [PMID: 23763607 DOI: 10.1021/bm4003442] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A series of thermoresponsive and biocompatible ABA triblock copolymers in which the outer A blocks comprise poly(N-isopropylacrylamide) and the central B block consists of O-phosphoethanolamine (PEA) grafted poly(acrylic acid) (PAA(PEA)) are achieved by atom transfer radical polymerization (ATRP) and subsequent modification. At a relatively low concentration (2 w/v% in phosphate buffered saline), the triblock copolymers can form free-standing gels at 37 °C. Using a combination of variable-temperature 1H NMR, dynamic light scattering, and rheological measurements, it is demonstrated that the gelation behavior is highly dependent on both the length of A blocks and the substitution degree of phosphate group. To examine the potential application as scaffold for bone tissue engineering, the physical gels are incubated in the simulated body fluid (SBF) for 2 weeks. Obvious nucleation and growth of hydroxyapatite are found in the gels, as indicated by the scanning electron microscope, energy dispersive spectroscopy, and X-ray diffraction measurements. The triblock copolymers also exhibit low cytotoxicity in cell viability test. Thus the triblock copolymers have great potential for bone tissue engineering.
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Affiliation(s)
- Zaifu Lin
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
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48
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Yuan W, Zou H, Guo W, Ren T, Ren J. pH-responsive amphiphilic H-shaped supramolecular copolymer via the inclusion complexation between β-cyclodextrin and adamantane. Polym Bull (Berl) 2013. [DOI: 10.1007/s00289-013-0947-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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49
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Thermoresponsive gels based on ABA triblock copolymers: Does the asymmetry matter? ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26674] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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50
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Sanan R, Mahajan RK. Micellar and analytical implications of a new potentiometric PVC sensor based on neutral ion-pair complexes of dodecylmethylimidazolium bromide–sodium dodecylsulfate. J Colloid Interface Sci 2013; 394:346-52. [DOI: 10.1016/j.jcis.2012.12.051] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 12/20/2012] [Accepted: 12/21/2012] [Indexed: 10/27/2022]
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