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Ding B, Gao H, Song J, Li Y, Zhang L, Cao X, Xu M, Cai J. Tough and Cell-Compatible Chitosan Physical Hydrogels for Mouse Bone Mesenchymal Stem Cells in Vitro. ACS APPLIED MATERIALS & INTERFACES 2016; 8:19739-19746. [PMID: 27410199 DOI: 10.1021/acsami.6b05302] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Most hydrogels involve synthetic polymers and organic cross-linkers that cannot simultaneously fulfill the mechanical and cell-compatibility requirements of biomedical applications. We prepared a new type of chitosan physical hydrogel with various degrees of deacetylation (DDs) via the heterogeneous deacetylation of nanoporous chitin hydrogels under mild conditions. The DD of the chitosan physical hydrogels ranged from 56 to 99%, and the hydrogels were transparent and mechanically strong because of the extra intra- and intermolecular hydrogen bonding interactions between the amino and hydroxyl groups on the nearby chitosan nanofibrils. The tensile strength and Young's modulus of the chitosan physical hydrogels were 3.6 and 7.9 MPa, respectively, for a DD of 56% and increased to 12.1 and 92.0 MPa for a DD of 99% in a swelling equilibrium state. In vitro studies demonstrated that mouse bone mesenchymal stem cells (mBMSCs) cultured on chitosan physical hydrogels had better adhesion and proliferation than those cultured on chitin hydrogels. In particular, the chitosan physical hydrogels promoted the differentiation of the mBMSCs into epidermal cells in vitro. These materials are promising candidates for applications such as stem cell research, cell therapy, and tissue engineering.
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Affiliation(s)
- Beibei Ding
- College of Chemistry & Molecular Sciences, Wuhan University , Wuhan 430072, People's Republic of China
| | - Huichang Gao
- School of Materials Science and Engineering, South China University of Technology , Guangzhou 510641, People's Republic of China
| | - Jianhui Song
- Department of Physics, Shanghai Key Laboratory of Magnetic Resonance, East China Normal University , Shanghai 200062, People's Republic of China
| | - Yaya Li
- College of Chemistry & Molecular Sciences, Wuhan University , Wuhan 430072, People's Republic of China
| | - Lina Zhang
- College of Chemistry & Molecular Sciences, Wuhan University , Wuhan 430072, People's Republic of China
| | - Xiaodong Cao
- School of Materials Science and Engineering, South China University of Technology , Guangzhou 510641, People's Republic of China
| | - Min Xu
- Department of Physics, Shanghai Key Laboratory of Magnetic Resonance, East China Normal University , Shanghai 200062, People's Republic of China
| | - Jie Cai
- College of Chemistry & Molecular Sciences, Wuhan University , Wuhan 430072, People's Republic of China
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202
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Yan K, Xiong Y, Wu S, Bentley WE, Deng H, Du Y, Payne GF, Shi XW. Electro-molecular Assembly: Electrical Writing of Information into an Erasable Polysaccharide Medium. ACS APPLIED MATERIALS & INTERFACES 2016; 8:19780-6. [PMID: 27420779 DOI: 10.1021/acsami.6b07036] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We report that information can be written into an erasable hydrogel medium by precisely imposing controlled electrical signals that trigger supramolecular self-assembly. We prepare the medium from a blend of two stimuli-responsive self-assembling polysaccharides agarose (thermally responsive) and chitosan (pH-responsive). Upon cooling the blend, agarose forms the hydrogel medium while the embedded chitosan chains can be induced to self-assemble in response to imposed pH cues. Importantly, these triggering pH-cues can be imposed electrically (by inserted electrodes) enabling complex messages (e.g., self-assembled multilayers) to be written within the hydrogel medium. The reversibility of these self-assembly mechanisms allow the written information, and the medium itself, to be erased. These physicochemical properties enable this dual responsive medium to encrypt information, while the responsiveness of this structural information and the biocompatibility of the medium suggest uses for accessing/reporting information in diverse life science applications, such as foods, cosmetics, medicine, and the environment.
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Affiliation(s)
- Kun Yan
- School of Resource and Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University , Wuhan, 430079, China
| | - Yuan Xiong
- School of Resource and Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University , Wuhan, 430079, China
| | - Si Wu
- School of Resource and Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University , Wuhan, 430079, China
| | - William E Bentley
- Fischell Department of Bioengineering and Institute of Bioscience and Biotechnology Research, University of Maryland , College Park, Maryland 20742, United States
| | - Hongbing Deng
- School of Resource and Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University , Wuhan, 430079, China
| | - Yumin Du
- School of Resource and Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University , Wuhan, 430079, China
| | - Gregory F Payne
- School of Resource and Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University , Wuhan, 430079, China
- Fischell Department of Bioengineering and Institute of Bioscience and Biotechnology Research, University of Maryland , College Park, Maryland 20742, United States
| | - Xiao-Wen Shi
- School of Resource and Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University , Wuhan, 430079, China
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203
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Nanocarriers based delivery of nutraceuticals for cancer prevention and treatment: A review of recent research developments. Trends Food Sci Technol 2016. [DOI: 10.1016/j.tifs.2016.06.003] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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204
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Frindy S, Primo A, Qaiss AEK, Bouhfid R, Lahcini M, Garcia H, Bousmina M, El Kadib A. Insightful understanding of the role of clay topology on the stability of biomimetic hybrid chitosan-clay thin films and CO2-dried porous aerogel microspheres. Carbohydr Polym 2016; 146:353-61. [DOI: 10.1016/j.carbpol.2016.03.077] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 03/25/2016] [Accepted: 03/26/2016] [Indexed: 11/28/2022]
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205
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Lima AC, Alvarez‐Lorenzo C, Mano JF. Design Advances in Particulate Systems for Biomedical Applications. Adv Healthc Mater 2016; 5:1687-723. [PMID: 27332041 DOI: 10.1002/adhm.201600219] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Revised: 04/09/2016] [Indexed: 12/13/2022]
Abstract
The search for more efficient therapeutic strategies and diagnosis tools is a continuous challenge. Advances in understanding the biological mechanisms behind diseases and tissues regeneration have widened the field of applications of particulate systems. Particles are no more just protective systems for the encapsulated drugs, but they play an active role in the success of the therapy. Moreover, particles have been explored for innovative purposes as templates for cells growth and as diagnostic tools. Until few years ago the most relevant parameters in particles formulation were the chemistry and the size. Currently, it is known that other physical characteristics can remarkably affect the performance of particulate systems. Particles with non-conventional shapes exhibit advantages due to the increasing circulation time in blood stream, less clearance by the immune system and more efficient cell internalization and trafficking. Creation of compartments has been found useful to control drug release, to tune the transport of substances across biological barriers, to supply the target with more than one bioactive agent or even to act as theranostic systems. It is expected that such complex shaped and compartmentalized systems improve the therapeutic outcomes and also the patient's compliance, acting as advanced devices that serve for simultaneous diagnosis and treatment of the disease, combining agents of very different features, at the same time. In this review, we overview and analyse the most recent advances in particle shape and compartmentalization and applications of newly designed particulate systems in the biomedical field.
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Affiliation(s)
- Ana Catarina Lima
- 3B's Research Group University of Minho AvePark 4806–909, Taipas Guimarães, Portugal ICVS/3B's‐PT Government Associate Laboratory Braga/Guimarães Portugal
| | - Carmen Alvarez‐Lorenzo
- Departamento de Farmacia y Tecnología Farmacéutica Facultad de Farmacia Universidad de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - João F. Mano
- 3B's Research Group University of Minho AvePark 4806–909, Taipas Guimarães, Portugal ICVS/3B's‐PT Government Associate Laboratory Braga/Guimarães Portugal
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206
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Xu D, Huang J, Zhao D, Ding B, Zhang L, Cai J. High-Flexibility, High-Toughness Double-Cross-Linked Chitin Hydrogels by Sequential Chemical and Physical Cross-Linkings. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:5844-5849. [PMID: 27158931 DOI: 10.1002/adma.201600448] [Citation(s) in RCA: 147] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 03/24/2016] [Indexed: 06/05/2023]
Abstract
High-flexibility, high-toughness double-cross-linked (DC) chitin hydrogels are prepared through a sequential chemical and physical cross-linkings strategy. The incorporation of chemically and physically cross-linked domains imbues the DC chitin hydrogels with relatively high stiffness, high toughness, and toughness recoverability.
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Affiliation(s)
- Duoduo Xu
- College of Chemistry & Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Junchao Huang
- College of Chemistry & Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Dan Zhao
- College of Chemistry & Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Beibei Ding
- College of Chemistry & Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Lina Zhang
- College of Chemistry & Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Jie Cai
- College of Chemistry & Molecular Sciences, Wuhan University, Wuhan, 430072, China
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207
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Wang Z, Nie J, Qin W, Hu Q, Tang BZ. Gelation process visualized by aggregation-induced emission fluorogens. Nat Commun 2016; 7:12033. [PMID: 27337500 PMCID: PMC4931011 DOI: 10.1038/ncomms12033] [Citation(s) in RCA: 155] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 05/24/2016] [Indexed: 12/22/2022] Open
Abstract
Alkaline-urea aqueous solvent system provides a novel and important approach for the utilization of polysaccharide. As one of the most important polysaccharide, chitosan can be well dissolved in this solvent system, and the resultant hydrogel material possesses unique and excellent properties. Thus the sound understanding of the gelation process is fundamentally important. However, current study of the gelation process is still limited due to the absence of direct observation and the lack of attention on the entire process. Here we show the entire gelation process of chitosan LiOH-urea aqueous system by aggregation-induced emission fluorescent imaging. Accompanied by other pseudo in situ investigations, we propose the mechanism of gelation process, focusing on the formation of junction points including hydrogen bonds and crystalline.
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Affiliation(s)
- Zhengke Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Hangzhou 310027, China
| | - Jingyi Nie
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Hangzhou 310027, China
| | - Wei Qin
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong 999077, China
| | - Qiaoling Hu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Hangzhou 310027, China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong 999077, China
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208
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209
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Cavigli L, Tatini F, Borri C, Ratto F, Centi S, Cini A, Lelli B, Matteini P, Pini R. Preparation and Photoacoustic Analysis of Cellular Vehicles Containing Gold Nanorods. J Vis Exp 2016:53328. [PMID: 27167995 PMCID: PMC4942024 DOI: 10.3791/53328] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Gold nanorods are attractive for a range of biomedical applications, such as the photothermal ablation and the photoacoustic imaging of cancer, thanks to their intense optical absorbance in the near-infrared window, low cytotoxicity and potential to home into tumors. However, their delivery to tumors still remains an issue. An innovative approach consists of the exploitation of the tropism of tumor-associated macrophages that may be loaded with gold nanorods in vitro. Here, we describe the preparation and the photoacoustic inspection of cellular vehicles containing gold nanorods. PEGylated gold nanorods are modified with quaternary ammonium compounds, in order to achieve a cationic profile. On contact with murine macrophages in ordinary Petri dishes, these particles are found to undergo massive uptake into endocytic vesicles. Then these cells are embedded in biopolymeric hydrogels, which are used to verify that the stability of photoacoustic conversion of the particles is retained in their inclusion into cellular vehicles. We are confident that these results may provide new inspiration for the development of novel strategies to deliver plasmonic particles to tumors.
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Affiliation(s)
- Lucia Cavigli
- Institute of Applied Physics, Italian National Research Council
| | | | - Claudia Borri
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Firenze
| | - Fulvio Ratto
- Institute of Applied Physics, Italian National Research Council;
| | - Sonia Centi
- Institute of Applied Physics, Italian National Research Council
| | - Alberto Cini
- Department of Physics and Astronomy, University of Florence, Sesto Fiorentino
| | - Beatrice Lelli
- Department of Pharmacy and Biotechnology, University of Bologna
| | - Paolo Matteini
- Institute of Applied Physics, Italian National Research Council
| | - Roberto Pini
- Institute of Applied Physics, Italian National Research Council
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210
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Fiamingo A, Montembault A, Boitard SE, Naemetalla H, Agbulut O, Delair T, Campana-Filho SP, Menasché P, David L. Chitosan Hydrogels for the Regeneration of Infarcted Myocardium: Preparation, Physicochemical Characterization, and Biological Evaluation. Biomacromolecules 2016; 17:1662-72. [PMID: 27064341 DOI: 10.1021/acs.biomac.6b00075] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The formation of chitosan hydrogels without any external cross-linking agent was successfully achieved by inducing the gelation of a viscous chitosan solution with aqueous NaOH or gaseous NH3. The hydrogels produced from high molecular weight (Mw ≈ 640 000 g mol(-1)) and extensively deacetylated chitosan (DA ≈ 2.8%) at polymer concentrations above ∼2.0% exhibited improved mechanical properties due to the increase of the chain entanglements and intermolecular junctions. The results also show that the physicochemical and mechanical properties of chitosan hydrogels can be controlled by varying their polymer concentration and by controlling the gelation conditions, that is, by using different gelation routes. The biological evaluation of such hydrogels for regeneration of infarcted myocardium revealed that chitosan hydrogels prepared from 1.5% polymer solutions were perfectly incorporated onto the epicardial surface of the heart and presented partial degradation accompanied by mononuclear cell infiltration.
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Affiliation(s)
- Anderson Fiamingo
- Ingénierie des Matériaux Polymères IMP@Lyon1, Univ Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5223 , 15 bd Latarjet, 69622 Villeurbanne Cedex, France.,Instituto de Química de São Carlos, Universidade de São Paulo , Avenida Trabalhador São-carlense, 400 São Carlos, Brazil
| | - Alexandra Montembault
- Ingénierie des Matériaux Polymères IMP@Lyon1, Univ Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5223 , 15 bd Latarjet, 69622 Villeurbanne Cedex, France
| | - Solène-Emmanuelle Boitard
- UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, Institut de Biologie Paris-Seine (IBPS) , 75005 Paris, France
| | - Hany Naemetalla
- INSERM UMR 970, Université Paris Descartes, Sorbonne Paris Cité , 75015 Paris, France.,Department of Cardiology, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, Université Sorbonne Paris Cite ́, 75015 Paris, France
| | - Onnik Agbulut
- UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, Institut de Biologie Paris-Seine (IBPS) , 75005 Paris, France
| | - Thierry Delair
- Ingénierie des Matériaux Polymères IMP@Lyon1, Univ Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5223 , 15 bd Latarjet, 69622 Villeurbanne Cedex, France
| | - Sérgio Paulo Campana-Filho
- Instituto de Química de São Carlos, Universidade de São Paulo , Avenida Trabalhador São-carlense, 400 São Carlos, Brazil
| | - Philippe Menasché
- INSERM UMR 970, Université Paris Descartes, Sorbonne Paris Cité , 75015 Paris, France.,Department of Cardiovascular Surgery, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou , 75015 Paris, France
| | - Laurent David
- Ingénierie des Matériaux Polymères IMP@Lyon1, Univ Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5223 , 15 bd Latarjet, 69622 Villeurbanne Cedex, France
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211
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Thangavel P, Ramachandran B, Kannan R, Muthuvijayan V. Biomimetic hydrogel loaded with silk and l-proline for tissue engineering and wound healing applications. J Biomed Mater Res B Appl Biomater 2016; 105:1401-1408. [PMID: 27080564 DOI: 10.1002/jbm.b.33675] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 03/10/2016] [Accepted: 03/20/2016] [Indexed: 11/11/2022]
Abstract
The aim of this article was to develop silk protein (SF) and l-proline (LP) loaded chitosan-(CS) based hydrogels via physical cross linking for tissue engineering and wound healing applications. Silk fibroin, a biodegradable and biocompatible protein, and l-proline, an important imino acid that is required for collagen synthesis, were added to chitosan to improve the wound healing properties of the hydrogel. Characterization of these hydrogels revealed that CS/SF/LP hydrogels were blended properly and LP incorporated hydrogels showed excellent thermal stability and good surface morphology. Swelling study showed the water holding efficiency of the hydrogels to provide enough moisture at the wound surface. In vitro biodegradation results demonstrated that the hydrogels had good degradation rate in PBS with lysozyme. LP loaded hydrogels showed approximately a twofold increase in antioxidant activity. In vitro cytocompatibility studies using NIH 3T3 L1 cells showed increased cell viability (p < 0.01), migration, proliferation and wound healing activity (p < 0.001) in LP loaded hydrogels compared to CS and CS/SF hydrogels. Cell adhesion on SF and LP hydrogels were observed using SEM and compared to CS hydrogel. LP incorporation showed 74-78% of wound closure compared to 35% for CS/SF and 3% for CS hydrogels at 48 h. These results suggest that incorporation of LP can significantly accelerate wound healing process compared to pure CS and SF-loaded CS hydrogels. Hence, CS/LP hydrogels could be a potential wound dressing material for the enhanced wound tissue regeneration and repair. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 1401-1408, 2017.
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Affiliation(s)
- Ponrasu Thangavel
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Balaji Ramachandran
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Ramya Kannan
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Vignesh Muthuvijayan
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India
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212
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Lin N, Gèze A, Wouessidjewe D, Huang J, Dufresne A. Biocompatible Double-Membrane Hydrogels from Cationic Cellulose Nanocrystals and Anionic Alginate as Complexing Drugs Codelivery. ACS APPLIED MATERIALS & INTERFACES 2016; 8:6880-6889. [PMID: 26925765 DOI: 10.1021/acsami.6b00555] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A biocompatible hydrogel with a double-membrane structure is developed from cationic cellulose nanocrystals (CNC) and anionic alginate. The architecture of the double-membrane hydrogel involves an external membrane composed of neat alginate, and an internal composite hydrogel consolidates by electrostatic interactions between cationic CNC and anionic alginate. The thickness of the outer layer can be regulated by the adsorption duration of neat alginate, and the shape of the inner layer can directly determine the morphology and dimensions of the double-membrane hydrogel (microsphere, capsule, and filmlike shapes). Two drugs are introduced into the different membranes of the hydrogel, which will ensure the complexing drugs codelivery and the varied drugs release behaviors from two membranes (rapid drug release of the outer hydrogel, and prolonged drug release of the inner hydrogel). The double-membrane hydrogel containing the chemically modified cellulose nanocrystals (CCNC) in the inner membrane hydrogel can provide the sustained drug release ascribed to the "nano-obstruction effect" and "nanolocking effect" induced by the presence of CCNC components in the hydrogels. Derived from natural polysaccharides (cellulose and alginate), the novel double-membrane structure hydrogel material developed in this study is biocompatible and can realize the complexing drugs release with the first quick release of one drug and the successively slow release of another drug, which is expected to achieve the synergistic release effects or potentially provide the solution to drug resistance in biomedical application.
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Affiliation(s)
- Ning Lin
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology , Wuhan 430070, P. R. China
| | - Annabelle Gèze
- Univ. Grenoble Alpes, DPM, UMR CNRS 5063 , Grenoble, France
| | | | - Jin Huang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology , Wuhan 430070, P. R. China
| | - Alain Dufresne
- Univ. Grenoble Alpes, LGP2 , F-38000 Grenoble, France
- CNRS, LGP2 , F-38000 Grenoble, France
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213
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He H, Liu M, Wei J, Chen P, Wang S, Wang Q. Hydrogel with Aligned and Tunable Pore Via "Hot Ice" Template Applies as Bioscaffold. Adv Healthc Mater 2016; 5:648-52, 626. [PMID: 26829493 DOI: 10.1002/adhm.201500707] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 10/31/2015] [Indexed: 11/05/2022]
Abstract
An aligned hydrogel with tunable macropore size via hot ice template is described, which exhibits a high porosity, large pore size, easily modified surface, high survival rate as well as a linear arrangement of NIH3T3 cells.
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Affiliation(s)
- Hongjian He
- Tenth People's Hospital; Department of Chemistry; School of Life Sciences and Technology; Tongji University; Shanghai 200092 P. R. China
| | - Mingyu Liu
- Tenth People's Hospital; Department of Chemistry; School of Life Sciences and Technology; Tongji University; Shanghai 200092 P. R. China
| | - Junjie Wei
- Tenth People's Hospital; Department of Chemistry; School of Life Sciences and Technology; Tongji University; Shanghai 200092 P. R. China
| | - Ping Chen
- Tenth People's Hospital; Department of Chemistry; School of Life Sciences and Technology; Tongji University; Shanghai 200092 P. R. China
| | - Shilong Wang
- Tenth People's Hospital; Department of Chemistry; School of Life Sciences and Technology; Tongji University; Shanghai 200092 P. R. China
| | - Qigang Wang
- Tenth People's Hospital; Department of Chemistry; School of Life Sciences and Technology; Tongji University; Shanghai 200092 P. R. China
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214
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215
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El Kadib A. Metal-Polysaccharide Interplay: Beyond Metal Immobilization, Graphenization-Induced-Anisotropic Growth. CHEMSUSCHEM 2016; 9:238-240. [PMID: 26811986 DOI: 10.1002/cssc.201501609] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Indexed: 06/05/2023]
Abstract
Such sweet support: Metal-polysaccharide interplay affords, after pyrolytic transformation, highly active catalysts based on anisotropically oriented nanoparticles supported on graphene sheets.
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Affiliation(s)
- Abdelkrim El Kadib
- Euro-med Research Center, Engineering Division, Euro-Mediterranean University of Fes (UEMF), Fès-Shore, Route de Sidi Hrazem, 30070, Fès, Morocco.
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216
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Kapoor S, Kundu SC. Silk protein-based hydrogels: Promising advanced materials for biomedical applications. Acta Biomater 2016; 31:17-32. [PMID: 26602821 DOI: 10.1016/j.actbio.2015.11.034] [Citation(s) in RCA: 278] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 11/08/2015] [Accepted: 11/17/2015] [Indexed: 01/20/2023]
Abstract
Hydrogels are a class of advanced material forms that closely mimic properties of the soft biological tissues. Several polymers have been explored for preparing hydrogels with structural and functional features resembling that of the extracellular matrix. Favourable material properties, biocompatibility and easy processing of silk protein fibers into several forms make it a suitable material for biomedical applications. Hydrogels made from silk proteins have shown a potential in overcoming limitations of hydrogels prepared from conventional polymers. A great deal of effort has been made to control the properties and to integrate novel topographical and functional characteristics in the hydrogel composed from silk proteins. This review provides overview of the advances in silk protein-based hydrogels with a primary emphasis on hydrogels of fibroin. It describes the approaches used to fabricate fibroin hydrogels. Attempts to improve the existing properties or to incorporate new features in the hydrogels by making composites and by improving fibroin properties by genetic engineering approaches are also described. Applications of the fibroin hydrogels in the realms of tissue engineering and controlled release are reviewed and their future potentials are discussed. STATEMENT OF SIGNIFICANCE This review describes the potentiality of silk fibroin hydrogel. Silk Fibroin has been widely recognized as an interesting biomaterial. Due to its properties including high mechanical strength and excellent biocompatibility, it has gained wide attention. Several groups are exploring silk-based materials including films, hydrogels, nanofibers and nanoparticles for different biomedical applications. Although there is a good amount of literature available on general properties and applications of silk based biomaterials, there is an inadequacy of extensive review articles that specifically focus on silk based hydrogels. Silk-based hydrogels have a strong potential to be utilized in biomedical applications. Our work is an effort to highlight the research that has been done in the area of silk-based hydrogels. It aims to provide an overview of the advances that have been made and the future course available. It will provide an overview of the silk-based hydrogels as well as may direct the readers to the specific areas of application.
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217
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Zhou Y, Gao HL, Shen LL, Pan Z, Mao LB, Wu T, He JC, Zou DH, Zhang ZY, Yu SH. Chitosan microspheres with an extracellular matrix-mimicking nanofibrous structure as cell-carrier building blocks for bottom-up cartilage tissue engineering. NANOSCALE 2016; 8:309-317. [PMID: 26610691 DOI: 10.1039/c5nr06876b] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Scaffolds for tissue engineering (TE) which closely mimic the physicochemical properties of the natural extracellular matrix (ECM) have been proven to advantageously favor cell attachment, proliferation, migration and new tissue formation. Recently, as a valuable alternative, a bottom-up TE approach utilizing cell-loaded micrometer-scale modular components as building blocks to reconstruct a new tissue in vitro or in vivo has been proved to demonstrate a number of desirable advantages compared with the traditional bulk scaffold based top-down TE approach. Nevertheless, micro-components with an ECM-mimicking nanofibrous structure are still very scarce and highly desirable. Chitosan (CS), an accessible natural polymer, has demonstrated appealing intrinsic properties and promising application potential for TE, especially the cartilage tissue regeneration. According to this background, we report here the fabrication of chitosan microspheres with an ECM-mimicking nanofibrous structure for the first time based on a physical gelation process. By combining this physical fabrication procedure with microfluidic technology, uniform CS microspheres (CMS) with controlled nanofibrous microstructure and tunable sizes can be facilely obtained. Especially, no potentially toxic or denaturizing chemical crosslinking agent was introduced into the products. Notably, in vitro chondrocyte culture tests revealed that enhanced cell attachment and proliferation were realized, and a macroscopic 3D geometrically shaped cartilage-like composite can be easily constructed with the nanofibrous CMS (NCMS) and chondrocytes, which demonstrate significant application potential of NCMS as the bottom-up cell-carrier components for cartilage tissue engineering.
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Affiliation(s)
- Yong Zhou
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, School of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, P. R. China.
| | - Huai-Ling Gao
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Li-Li Shen
- Department of Dental Implant Center, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China.
| | - Zhao Pan
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Li-Bo Mao
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Tao Wu
- Department of Dental Implant Center, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China.
| | - Jia-Cai He
- Department of Dental Implant Center, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China.
| | - Duo-Hong Zou
- Department of Dental Implant Center, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China.
| | - Zhi-Yuan Zhang
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, School of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, P. R. China.
| | - Shu-Hong Yu
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
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218
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Saneja A, Nehate C, Alam N, Gupta PN. Recent Advances in Chitosan-Based Nanomedicines for Cancer Chemotherapy. SPRINGER SERIES ON POLYMER AND COMPOSITE MATERIALS 2016. [DOI: 10.1007/978-81-322-2511-9_9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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219
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Feng D, Bai B, Wang H, Suo Y. Enhanced mechanical stability and sensitive swelling performance of chitosan/yeast hybrid hydrogel beads. NEW J CHEM 2016. [DOI: 10.1039/c5nj02404h] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Up to the present time, improving the mechanical stability of hydrogel beads is still a challenging task for future applications of chitosan hydrogels.
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Affiliation(s)
- Diejing Feng
- College of Environmental Science and Engineering
- Chang'an University
- Xi'an
- P. R. China
| | - Bo Bai
- Key Laboratory of Tibetan Medicine Research
- Northwest Institute of Plateau Biology
- Chinese Academy of Sciences
- Xining
- P. R. China
| | - Honglun Wang
- Key Laboratory of Tibetan Medicine Research
- Northwest Institute of Plateau Biology
- Chinese Academy of Sciences
- Xining
- P. R. China
| | - Yourui Suo
- Key Laboratory of Tibetan Medicine Research
- Northwest Institute of Plateau Biology
- Chinese Academy of Sciences
- Xining
- P. R. China
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220
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Gräfe D, Zschoche S, Appelhans D, Voit B. Tetra-sensitive graft copolymer gels with high volume changes. RSC Adv 2016. [DOI: 10.1039/c6ra01857b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
For the preparation of multi-responsive graft copolymer gels for hydrogel-based microsystem technologies, a poly(4-vinylbenzoic acid) macromonomer was prepared in a three-step synthesis.
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Affiliation(s)
- D. Gräfe
- Leibniz-Institut für Polymerforschung Dresden e. V
- 01069 Dresden
- Germany
- Technische Universität Dresden
- Chair of Organic Chemistry of Polymers
| | - S. Zschoche
- Leibniz-Institut für Polymerforschung Dresden e. V
- 01069 Dresden
- Germany
| | - D. Appelhans
- Leibniz-Institut für Polymerforschung Dresden e. V
- 01069 Dresden
- Germany
| | - B. Voit
- Leibniz-Institut für Polymerforschung Dresden e. V
- 01069 Dresden
- Germany
- Technische Universität Dresden
- Chair of Organic Chemistry of Polymers
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221
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Criado M, Rey JM, Mijangos C, Hernández R. Double-membrane thermoresponsive hydrogels from gelatin and chondroitin sulphate with enhanced mechanical properties. RSC Adv 2016. [DOI: 10.1039/c6ra25053j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel methodology to obtain thermoresponsive mechanically strong hydrogels of gelatin and chondroitin sulphate organized in layers.
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Affiliation(s)
- M. Criado
- Instituto de Ciencia y Tecnología de Polímeros
- Consejo Superior de Investigaciones Científicas
- 28006 Madrid
- Spain
| | - J. M. Rey
- Instituto de Ciencia y Tecnología de Polímeros
- Consejo Superior de Investigaciones Científicas
- 28006 Madrid
- Spain
| | - C. Mijangos
- Instituto de Ciencia y Tecnología de Polímeros
- Consejo Superior de Investigaciones Científicas
- 28006 Madrid
- Spain
| | - R. Hernández
- Instituto de Ciencia y Tecnología de Polímeros
- Consejo Superior de Investigaciones Científicas
- 28006 Madrid
- Spain
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222
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Choi M, Kim KG, Heo J, Jeong H, Kim SY, Hong J. Multilayered Graphene Nano-Film for Controlled Protein Delivery by Desired Electro-Stimuli. Sci Rep 2015; 5:17631. [PMID: 26621344 PMCID: PMC4664934 DOI: 10.1038/srep17631] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 11/03/2015] [Indexed: 01/22/2023] Open
Abstract
Recent research has highlighted the potential use of "smart" films, such as graphene sheets, that would allow for the controlled release of a variety of therapeutic drugs. Taking full advantage of these versatile conducting sheets, we investigated the novel concept of applying graphene oxide (GO) and reduced graphene oxide (rGO) materials as both barrier and conducting layers that afford controlled entrapment and release of any molecules of interest. We fabricated multilayered nanofilm architectures using a hydrolytically degradable cationic poly(β-amino ester) (PAE), a model protein antigen, ovalbumin (OVA) as a building block along with the GO and rGO. We successfully showed that these multilayer films are capable of blocking the initial burst release of OVA, and they can be triggered to precisely control the release upon the application of electrochemical potential. This new drug delivery platform will find its usefulness in various transdermal drug delivery devices where on-demand control of drug release from the surface is necessary.
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Affiliation(s)
- Moonhyun Choi
- School of Chemical Engineering & Materials Science, Chung-Ang University, Seoul 156-756, Republic of Korea
| | - Kyung-Geun Kim
- School of Mechanical Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Jiwoong Heo
- School of Chemical Engineering & Materials Science, Chung-Ang University, Seoul 156-756, Republic of Korea
| | - Hyejoong Jeong
- School of Chemical Engineering & Materials Science, Chung-Ang University, Seoul 156-756, Republic of Korea
| | - Sung Yeol Kim
- School of Mechanical Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Jinkee Hong
- School of Chemical Engineering & Materials Science, Chung-Ang University, Seoul 156-756, Republic of Korea
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223
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Pei X, Zan T, Li H, Chen Y, Shi L, Zhang Z. Pure Anisotropic Hydrogel with an Inherent Chiral Internal Structure Based on the Chiral Nematic Liquid Crystal Phase of Rodlike Viruses. ACS Macro Lett 2015; 4:1215-1219. [PMID: 35614839 DOI: 10.1021/acsmacrolett.5b00677] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Imparting ordered structures into otherwise amorphous hydrogels is expected to endow these popular materials with novel multiple-stimuli responsiveness that promises many applications. The current contribution reports a method to fabricate pure polymeric hydrogels with an inherent chiral internal structure by templating on the chiral nematic liquid crystal phase of a rodlike virus. A method was developed to form macroscopically homogeneous chiral templates by confinement induced self-assembly in the presence of monomers, cross-linkers and initiators. Polymerization induced gelation was performed without perturbing the elegant 3D chiral organization of the rodlike virus bearing double bonds. Furthermore, a suitable method was found to remove the organic virus template while keeping the desired polymeric replica intact, resulting in a pure polymeric hydrogel with a unique internal chiral feature that originates from the 3D chiral ordering of the cylindrical pores left by the virus. Multiple-stimuli responsiveness has been demonstrated and can be quantified by the change of the pitch of the chiral feature. The chiral structure endows the otherwise featureless hydrogel with a unique material property that might be used as a readout signal for sensing and acts as the basis for responsive, biomimetic nanostructured materials.
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Affiliation(s)
- Xiaodong Pei
- Key
Laboratory of Functional Polymer Materials of Ministry of Education,
Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Tingting Zan
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Hengming Li
- Key
Laboratory of Functional Polymer Materials of Ministry of Education,
Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yingjun Chen
- Key
Laboratory of Functional Polymer Materials of Ministry of Education,
Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Linqi Shi
- Key
Laboratory of Functional Polymer Materials of Ministry of Education,
Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhenkun Zhang
- Key
Laboratory of Functional Polymer Materials of Ministry of Education,
Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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224
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Kozlovskaya V, Zavgorodnya O, Ankner JF, Kharlampieva E. Controlling Internal Organization of Multilayer Poly(methacrylic acid) Hydrogels with Polymer Molecular Weight. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b02019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
| | | | - John F. Ankner
- Spallation
Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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225
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Morrow BH, Payne GF, Shen J. pH-Responsive Self-Assembly of Polysaccharide through a Rugged Energy Landscape. J Am Chem Soc 2015; 137:13024-30. [PMID: 26383701 DOI: 10.1021/jacs.5b07761] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Self-assembling polysaccharides can form complex networks with structures and properties highly dependent on the sequence of triggering cues. Controlling the emergence of such networks provides an opportunity to create soft matter with unique features; however, it requires a detailed understanding of the subtle balance between the attractive and repulsive forces that drives the stimuli-induced self-assembly. Here we employ all-atom molecular dynamics simulations on the order of 100 ns to study the mechanisms of the pH-responsive gelation of the weakly basic aminopolysaccharide chitosan. We find that low pH induces a sharp transition from gel to soluble state, analogous to pH-dependent folding of proteins, while at neutral and high pH self-assembly occurs via a rugged energy landscape, reminiscent of RNA folding. A surprising role of salt is to lubricate the conformational search for the thermodynamically stable states. Although our simulations represent the early events in the self-assembly process of chitosan, which may take seconds or minutes to complete, the atomically detailed insights are consistent with recent experimental observations and provide a basis for understanding how environmental conditions modulate the structure and mechanical properties of the self-assembled polysaccharide systems. The ability to control structure and properties via modification of process conditions will aid in the technological efforts to create complex soft matter with applications ranging from bioelectronics to regenerative medicine.
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Affiliation(s)
- Brian H Morrow
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland , Baltimore, Maryland 21201, United States
| | - Gregory F Payne
- Fischell Department of Bioengineering and Institute for Biosystems and Biotechnology Research, University of Maryland , College Park, Maryland 20742, United States
| | - Jana Shen
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland , Baltimore, Maryland 21201, United States
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226
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Häring M, Schiller J, Mayr J, Grijalvo S, Eritja R, Díaz DD. Magnetic Gel Composites for Hyperthermia Cancer Therapy. Gels 2015; 1:135-161. [PMID: 30674170 PMCID: PMC6318599 DOI: 10.3390/gels1020135] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 09/02/2015] [Indexed: 12/13/2022] Open
Abstract
Hyperthermia therapy is a medical treatment based on the exposition of body tissue to slightly higher temperatures than physiological (i.e., between 41 and 46 °C) to damage and kill cancer cells or to make them more susceptible to the effects of radiation and anti-cancer drugs. Among several methods suitable for heating tumor areas, magnetic hyperthermia involves the introduction of magnetic micro/nanoparticles into the tumor tissue, followed by the application of an external magnetic field at fixed frequency and amplitude. A very interesting approach for magnetic hyperthermia is the use of biocompatible thermo-responsive magnetic gels made by the incorporation of the magnetic particles into cross-linked polymer gels. Mainly because of the hysteresis loss from the magnetic particles subjected to a magnetic field, the temperature of the system goes up and, once the temperature crosses the lower critical solution temperature, thermo-responsive gels undergo large volume changes and may deliver anti-cancer drug molecules that have been previously entrapped in their networks. This tutorial review describes the main properties and formulations of magnetic gel composites conceived for magnetic hyperthermia therapy.
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Affiliation(s)
- Marleen Häring
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, Regensburg 93040, Germany.
| | - Jana Schiller
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, Regensburg 93040, Germany.
| | - Judith Mayr
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, Regensburg 93040, Germany.
| | - Santiago Grijalvo
- IQAC-CSIC, Jordi Girona 18-26, Barcelona 08034, Spain.
- The Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Jordi Girona 18-26, Barcelona 08034, Spain.
| | - Ramon Eritja
- IQAC-CSIC, Jordi Girona 18-26, Barcelona 08034, Spain.
- The Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Jordi Girona 18-26, Barcelona 08034, Spain.
| | - David Díaz Díaz
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, Regensburg 93040, Germany.
- IQAC-CSIC, Jordi Girona 18-26, Barcelona 08034, Spain.
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227
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Zhao W, Kong M, Feng C, Cheng X, Liu Y, Chen X. Investigation of gelling behavior of thiolated chitosan in alkaline condition and its application in stent coating. Carbohydr Polym 2015; 136:307-15. [PMID: 26572360 DOI: 10.1016/j.carbpol.2015.09.049] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 09/07/2015] [Accepted: 09/15/2015] [Indexed: 12/22/2022]
Abstract
The gelling behaviors of thiolated chitosan (TCS) in alkaline condition were investigated. Thioglycolic acid was conjugated onto chitosan backbone through amide bond formation. The variations of thiol group content were monitored in presence of H2O2 or different pH values (pH 7.0, 8.0, 9.0) in dialysis mode. Different from the decreasing thiol group content upon time in acidic condition, increasing amount of thiol groups was detected in alkaline pH during 120 min dialysis attributed to alkaline hydrolysis of intra-molecular disulfide bonds. The extent of which was larger at higher pH values. Higher degree of thiolation, thiomer concentration or pH values promoted gelation of TCS. Entanglement and coagulation of chitosan molecule chains and re-arrangement of disulfide bonds acted closely and dynamically in the gelation process. Disulfide bonds, especially inter-molecular type, are formed by synergetic effects of thiol/disulfide interchange and thiol/thiol oxidation reactions. TCS coated vascular stent displayed wave-like microstructure of parallel ridges and grooves, which favored HUVECs adhesion and proliferation. The biocompatibility, peculiar morphology and thiol moieties of TCS as stent coating material appear application potential for vascular stent.
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Affiliation(s)
- Wei Zhao
- College of Marine Life Science, Ocean University of China, 5 No. Yushan Road, Qingdao 266003, Shandong Province, China
| | - Ming Kong
- College of Marine Life Science, Ocean University of China, 5 No. Yushan Road, Qingdao 266003, Shandong Province, China.
| | - Chao Feng
- College of Marine Life Science, Ocean University of China, 5 No. Yushan Road, Qingdao 266003, Shandong Province, China
| | - Xiaojie Cheng
- College of Marine Life Science, Ocean University of China, 5 No. Yushan Road, Qingdao 266003, Shandong Province, China
| | - Ya Liu
- College of Marine Life Science, Ocean University of China, 5 No. Yushan Road, Qingdao 266003, Shandong Province, China
| | - Xiguang Chen
- College of Marine Life Science, Ocean University of China, 5 No. Yushan Road, Qingdao 266003, Shandong Province, China.
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228
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Ling Z, Yu C, Fan X, Liu S, Yang J, Zhang M, Wang G, Xiao N, Qiu J. Freeze-drying for sustainable synthesis of nitrogen doped porous carbon cryogel with enhanced supercapacitor and lithium ion storage performance. NANOTECHNOLOGY 2015; 26:374003. [PMID: 26314370 DOI: 10.1088/0957-4484/26/37/374003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A chitosan (CS) based nitrogen doped carbon cryogel with a high specific surface area (SSA) has been directly synthesized via a combined process of freeze-drying and high-temperature carbonization without adding any activation agents. The as-made carbon cryogel demonstrates an SSA up to 1025 m(2) g(-1) and a high nitrogen content of 5.98 wt%, while its counterpart derived from CS powder only shows an SSA of 26 m(2) g(-1). Freeze-drying is a determining factor for the formation of carbon cryogel with a high SSA, where the CS powder with a size of ca. 200 μm is transformed into the sheet-shaped cryogel with a thickness of 5-8 μm. The as-made carbon cryogel keeps the sheet-shaped structure and the abundant pores are formed in situ and decorated inside the sheets during carbonization. The carbon cryogel shows significantly enhanced performance as supercapacitor and lithium ion battery electrodes in terms of capacity and rate capability due to its quasi two-dimensional (2D) structure with reduced thickness. The proposed method may provide a simple approach to configure 2D biomass-derived advanced carbon materials for energy storage devices.
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Affiliation(s)
- Zheng Ling
- Carbon Research Laboratory, Liaoning Key Lab for Energy Materials and Chemical Engineering, State Key Lab of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
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229
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Guan Y, Chen J, Qi X, Chen G, Peng F, Sun R. Fabrication of Biopolymer Hydrogel Containing Ag Nanoparticles for Antibacterial Property. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b01532] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ying Guan
- Beijing Key Laboratory of
Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Jinghuan Chen
- Beijing Key Laboratory of
Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Xianming Qi
- Beijing Key Laboratory of
Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Gegu Chen
- Beijing Key Laboratory of
Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Feng Peng
- Beijing Key Laboratory of
Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Runcang Sun
- Beijing Key Laboratory of
Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
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230
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Sun Z, Lv F, Cao L, Liu L, Zhang Y, Lu Z. Multistimuli-Responsive, Moldable Supramolecular Hydrogels Cross-Linked by Ultrafast Complexation of Metal Ions and Biopolymers. Angew Chem Int Ed Engl 2015; 54:7944-8. [DOI: 10.1002/anie.201502228] [Citation(s) in RCA: 219] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 04/19/2015] [Indexed: 01/04/2023]
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231
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Sun Z, Lv F, Cao L, Liu L, Zhang Y, Lu Z. Multistimuli-Responsive, Moldable Supramolecular Hydrogels Cross-Linked by Ultrafast Complexation of Metal Ions and Biopolymers. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502228] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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232
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Xia MG, Meng ZQ, Zhu MF. Design and fabrication of novel organic/inorganic thermoresponsive hydrogels with excellent mechanical properties. ACTA ACUST UNITED AC 2015. [DOI: 10.1179/1432891715z.0000000001508] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- M. G. Xia
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Z. Q. Meng
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - M. F. Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and Engineering, Donghua University, Shanghai 201620, China
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233
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Li Y, Liu Y, Gao T, Zhang B, Song Y, Terrell JL, Barber N, Bentley WE, Takeuchi I, Payne GF, Wang Q. Self-assembly with orthogonal-imposed stimuli to impart structure and confer magnetic function to electrodeposited hydrogels. ACS APPLIED MATERIALS & INTERFACES 2015; 7:10587-10598. [PMID: 25923335 DOI: 10.1021/acsami.5b02339] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A magnetic nanocomposite film with the capability of reversibly collecting functionalized magnetic particles was fabricated by simultaneously imposing two orthogonal stimuli (electrical and magnetic). We demonstrate that cathodic codeposition of chitosan and Fe3O4 nanoparticles while simultaneously applying a magnetic field during codeposition can (i) organize structure, (ii) confer magnetic properties, and (iii) yield magnetic films that can perform reversible collection/assembly functions. The magnetic field triggered the self-assembly of Fe3O4 nanoparticles into hierarchical "chains" and "fibers" in the chitosan film. For controlled magnetic properties, the Fe3O4-chitosan film was electrodeposited in the presence of various strength magnetic fields and different deposition times. The magnetic properties of the resulting films should enable broad applications in complex devices. As a proof of concept, we demonstrate the reversible capture and release of green fluorescent protein (EGFP)-conjugated magnetic microparticles by the magnetic chitosan film. Moreover, antibody-functionalized magnetic microparticles were applied to capture cells from a sample, and these cells were collected, analyzed, and released by the magnetic chitosan film, paving the way for applications such as reusable biosensor interfaces (e.g., for pathogen detection). To our knowledge, this is the first report to apply a magnetic field during the electrodeposition of a hydrogel to generate magnetic soft matter. Importantly, the simple, rapid, and reagentless fabrication methodologies demonstrated here are valuable features for creating a magnetic device interface.
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234
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Self-healable hydrogel on tumor cell as drug delivery system for localized and effective therapy. Carbohydr Polym 2015; 122:336-42. [DOI: 10.1016/j.carbpol.2014.12.077] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2014] [Revised: 12/10/2014] [Accepted: 12/28/2014] [Indexed: 12/23/2022]
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235
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Duan J, Liang X, Cao Y, Wang S, Zhang L. High Strength Chitosan Hydrogels with Biocompatibility via New Avenue Based on Constructing Nanofibrous Architecture. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00117] [Citation(s) in RCA: 200] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jiangjiang Duan
- College
of Chemistry and
Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xichao Liang
- College
of Chemistry and
Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yan Cao
- College
of Chemistry and
Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Sen Wang
- College
of Chemistry and
Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Lina Zhang
- College
of Chemistry and
Molecular Sciences, Wuhan University, Wuhan 430072, China
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236
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Tong R, Wang L, Yu H, Zain-ul-Abdin, Khalid H, Akram M, Chen Y. Redox and Temperature Dual Responsive Gel Based on Host–Guest Assembly. J Inorg Organomet Polym Mater 2015. [DOI: 10.1007/s10904-015-0210-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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237
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238
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Corazzari I, Nisticò R, Turci F, Faga MG, Franzoso F, Tabasso S, Magnacca G. Advanced physico-chemical characterization of chitosan by means of TGA coupled on-line with FTIR and GCMS: Thermal degradation and water adsorption capacity. Polym Degrad Stab 2015. [DOI: 10.1016/j.polymdegradstab.2014.12.006] [Citation(s) in RCA: 202] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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239
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Nie J, Lu W, Ma J, Yang L, Wang Z, Qin A, Hu Q. Orientation in multi-layer chitosan hydrogel: morphology, mechanism, and design principle. Sci Rep 2015; 5:7635. [PMID: 25559867 PMCID: PMC4284508 DOI: 10.1038/srep07635] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 12/01/2014] [Indexed: 12/25/2022] Open
Abstract
Hydrogels with organized structure have attracted remarkable attentions for bio-related applications. Among the preparation of hierarchical hydrogel materials, fabrication of hydrogel with multi-layers is an important branch. Although the generation mechanism of layers had been fully discussed, sub-layer structure was not sufficiently studied. In this research, multi-layered chitosan hydrogel with oriented structure was constructed, and the formation mechanism of orientation was proposed, based on gelation behavior and entanglement of polymer chains in the hydrogel-solution system. Employing the layered-oriented characteristic, chitosan hydrogel materials with various shapes and structure can be designed and fabricated.
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Affiliation(s)
- Jingyi Nie
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Wentao Lu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Jianjun Ma
- Department of Orthopaedics, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Ling Yang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Zhengke Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - An Qin
- Department of Orthopedics, Shanghai Key Laboratory of Orthopedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Qiaoling Hu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
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240
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Chitosan to Connect Biology to Electronics: Fabricating the Bio-Device Interface and Communicating Across This Interface. Polymers (Basel) 2014. [DOI: 10.3390/polym7010001] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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241
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Luo R, Cao Y, Shi P, Chen CH. Near-infrared light responsive multi-compartmental hydrogel particles synthesized through droplets assembly induced by superhydrophobic surface. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:4886-94. [PMID: 25059988 DOI: 10.1002/smll.201401312] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 06/07/2014] [Indexed: 05/22/2023]
Abstract
Light-responsive hydrogel particles with multi-compartmental structure are useful for applications in microreactors, drug delivery and tissue engineering because of their remotely-triggerable releasing ability and combinational functionalities. The current methods of synthesizing multi-compartmental hydrogel particles typically involve multi-step interrupted gelation of polysaccharides or complicated microfluidic procedures with limited throughput. In this study, a two-step sequential gelation process is developed to produce agarose/alginate double network multi-compartmental hydrogel particles using droplets assemblies induced by superhydrophobic surface as templates. The agarose/alginate double network multi-compartmental hydrogel particles can be formed with diverse hierarchical structures showing combinational functionalities. The synthesized hydrogel particles, when loaded with polypyrrole (PPy) nanoparticles that act as photothermal nanotransducers, are demonstrated to function as near-infrared (NIR) light triggerable and deformation-free hydrogel materials. Periodic NIR laser switching is applied to stimulate these hydrogel particles, and pulsatile release profiles are collected. Compared with massive reagents released from single-compartmental hydrogel particles, more regulated release profiles of the multi-compartmental hydrogel particles are observed.
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Affiliation(s)
- Rongcong Luo
- Department of Biomedical Engineering, Singapore Institute of Neurotechnology, National University of Singapore, Singapore
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242
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Singh LK, Singh M, Singh M. Biopolymeric receptor for peptide recognition by molecular imprinting approach—Synthesis, characterization and application. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 45:383-94. [DOI: 10.1016/j.msec.2014.08.073] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Revised: 07/16/2014] [Accepted: 08/18/2014] [Indexed: 10/24/2022]
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243
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Li C, Han Q, Guan Y, Zhang Y. Thermal gelation of chitosan in an aqueous alkali-urea solution. SOFT MATTER 2014; 10:8245-8253. [PMID: 25182118 DOI: 10.1039/c4sm01336k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Chitosan can readily dissolve in a precooled aqueous alkali-urea solution, a solvent that has previously been developed to dissolve cellulose. Upon heating, the resulting solutions quickly become a gel. The thermal gelling of the chitosan solutions was studied by rheology. Initially, a temperature ramp test was used to determine the gelation temperatures (Tgel). It was found that Tgel does not significantly change with chitosan concentration. The in situ formed gels liquefy on cooling, but the liquefication temperature (Tliq) is considerably lower than Tgel, indicating a large hysteresis in the cooling process. In addition, Tliq decreases with increasing polymer concentration. The kinetics of thermal gelation was then studied by isothermal curing. The solution gels were cured not only at temperatures above the Tgel, which was determined in the temperature ramp test, but also at temperatures far below the Tgel, provided that the solution is cured at the temperature for a long enough time. The solutions become gel faster when cured at higher temperatures. When cured at the same temperature, higher concentration solutions become gel faster. The apparent activation energy for the thermal gelation of the chitosan solutions was determined to be ∼200 kJ mol(-1). Physical gels of pure chitosan were obtained by repeated soaking the in situ formed gels in water. Preliminary test shows that new gels are highly biocompatible.
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Affiliation(s)
- Chong Li
- State Key Laboratory of Medicinal Chemical Biology and Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, College of Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China.
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244
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245
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Glycerophosphate-based chitosan thermosensitive hydrogels and their biomedical applications. Carbohydr Polym 2014; 117:524-536. [PMID: 25498667 DOI: 10.1016/j.carbpol.2014.09.094] [Citation(s) in RCA: 243] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 09/24/2014] [Accepted: 09/25/2014] [Indexed: 11/23/2022]
Abstract
Chitosan is non-toxic, biocompatible and biodegradable polysaccharide composed of glucosamine and derived by deacetylation of chitin. Chitosan thermosensitive hydrogel has been developed to form a gel in situ, precluding the need for surgical implantation. In this review, the recent advances in chitosan thermosensitive hydrogels based on different glycerophosphate are summarized. The hydrogel is prepared with chitosan and β-glycerophosphate or αβ-glycerophosphate which is liquid at room temperature and transits into gel as temperature increases. The gelation mechanism may involve multiple interactions between chitosan, glycerophosphate, and water. The solution behavior, rheological and physicochemical properties, and gelation process of the hydrogel are affected not only by the molecule weight, deacetylation degree, and concentration of chitosan, but also by the kind and concentration of glycerophosphate. The properties and the three-dimensional networks of the hydrogel offer them wide applications in biomedical field including local drug delivery and tissue engineering.
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246
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Malaise S, Rami L, Montembault A, Alcouffe P, Burdin B, Bordenave L, Delmond S, David L. Bioresorption mechanisms of chitosan physical hydrogels: A scanning electron microscopy study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 42:374-84. [DOI: 10.1016/j.msec.2014.04.060] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 04/05/2014] [Accepted: 04/26/2014] [Indexed: 11/30/2022]
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247
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He M, Wang Z, Cao Y, Zhao Y, Duan B, Chen Y, Xu M, Zhang L. Construction of Chitin/PVA Composite Hydrogels with Jellyfish Gel-Like Structure and Their Biocompatibility. Biomacromolecules 2014; 15:3358-65. [DOI: 10.1021/bm500827q] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
| | | | | | | | | | | | - Min Xu
- Department
of Physics, East China Normal University, Shanghai, 200062, China
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248
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Maki Y, Furusawa K, Yasuraoka S, Okamura H, Hosoya N, Sunaga M, Dobashi T, Sugimoto Y, Wakabayashi K. Universality and specificity in molecular orientation in anisotropic gels prepared by diffusion method. Carbohydr Polym 2014; 108:118-26. [DOI: 10.1016/j.carbpol.2014.03.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 02/12/2014] [Accepted: 03/03/2014] [Indexed: 10/25/2022]
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249
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Matteini P, Tatini F, Cavigli L, Ottaviano S, Ghini G, Pini R. Graphene as a photothermal switch for controlled drug release. NANOSCALE 2014; 6:7947-53. [PMID: 24902634 DOI: 10.1039/c4nr01622j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Graphene has recently emerged as a novel material in the biomedical field owing to its optical properties, biocompatibility, large specific surface area and low cost. In this paper, we provide the first demonstration of the possibility of using light to remotely trigger the release of drugs from graphene in a highly controlled manner. Different drugs including chemotherapeutics and proteins are firmly adsorbed onto reduced graphene oxide (rGO) nanosheets dispersed in a biopolymer film and then released by individual millisecond-long light pulses generated by a near infrared (NIR) laser. Here graphene plays the dual role of a versatile substrate for temporary storage of drugs and an effective transducer of NIR-light into heat. Drug release appears to be narrowly confined within the size of the laser spot under noninvasive conditions and can be precisely dosed depending on the number of pulses. The approach proposed paves the way for tailor-made pharmacological treatments of chronic diseases, including cancer, anaemia and diabetes.
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Affiliation(s)
- Paolo Matteini
- Institute of Applied Physics "Nello Carrara", National Research Council, via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy.
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250
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Nita LE, Chiriac AP, Nistor MT, Tartau L. Upon some multi-membrane hydrogels based on poly(N,N-dimethyl-acrylamide-co-3,9-divinyl-2,4,8,10-tetraoxaspiro (5.5) undecane): preparation, characterization and in vivo tests. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:1757-1768. [PMID: 24706160 DOI: 10.1007/s10856-014-5205-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 03/24/2014] [Indexed: 06/03/2023]
Abstract
The study presents the possibility of preparation of multi-membrane gel systems with different morphologies and properties, based on poly(N,N-dimethyl-acrylamide-co-3,9-divinyl-2,4,8,10-tetraoxaspiro (5.5) undecane) copolymer and crosslinked with N,N'-methylene-bis-acrylamide. The basic copolymer has dual thermo- and pH sensitive character. After the core hydrogel is realized, the preformed gel is immersed in the aqueous solutions of ammonia, sodium chloride and sodium citrate for further edge constructing of the supramolecular assemblies. Then, the new layers by adding new sets of gelifying components are realized. The new multi-membrane gel systems are intended to be used as matrix for bioactive substances embedding. In this context the systems were loaded with norfloxacin as drug model. The in vivo tests show good biocompatibility for the implants based on multi-membrane gel structures loaded with drug.
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Affiliation(s)
- Loredana E Nita
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley No. 41-A, 700487, Iasi, Romania,
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