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Lee YB, Lee JY, Byun H, Ahmad T, Akashi M, Matsusaki M, Shin H. One-step delivery of a functional multi-layered cell sheet using a thermally expandable hydrogel with controlled presentation of cell adhesive proteins. Biofabrication 2018; 10:025001. [DOI: 10.1088/1758-5090/aa9d43] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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52
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Lechner H, Soriano P, Poschner R, Hailes HC, Ward JM, Kroutil W. Library of Norcoclaurine Synthases and Their Immobilization for Biocatalytic Transformations. Biotechnol J 2017; 13:e1700542. [DOI: 10.1002/biot.201700542] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 10/17/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Horst Lechner
- Institute of Chemistry; University of Graz, NAWI Graz, BioTechMed Graz; Heinrichstraße 28 8010 Graz Austria
| | - Pablo Soriano
- Institute of Chemistry; University of Graz, NAWI Graz, BioTechMed Graz; Heinrichstraße 28 8010 Graz Austria
| | - Roman Poschner
- Institute of Chemistry; University of Graz, NAWI Graz, BioTechMed Graz; Heinrichstraße 28 8010 Graz Austria
| | - Helen C. Hailes
- Department of Chemistry; University College London; 20 Gordon Street, WC1H 0AJ London UK
| | - John M. Ward
- Department of Biochemical Engineering; University College London; Gower Street, WC1E 6BT London UK
| | - Wolfgang Kroutil
- Institute of Chemistry; University of Graz, NAWI Graz, BioTechMed Graz; Heinrichstraße 28 8010 Graz Austria
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Lu AX, Oh H, Terrell JL, Bentley WE, Raghavan SR. A new design for an artificial cell: polymer microcapsules with addressable inner compartments that can harbor biomolecules, colloids or microbial species. Chem Sci 2017; 8:6893-6903. [PMID: 30155196 PMCID: PMC6103254 DOI: 10.1039/c7sc01335c] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 08/07/2017] [Indexed: 12/20/2022] Open
Abstract
Eukaryotic cells have an architecture consisting of multiple inner compartments (organelles) such as the nucleus, mitochondria, and lysosomes. Each organelle is surrounded by a distinct membrane and has unique internal contents; consequently, each organelle has a distinct function within the cell. In this study, we create biopolymer microcapsules having a compartmentalized architecture as in eukaryotic cells. To make these capsules, we present a biocompatible method that solely uses aqueous media (i.e., avoids the use of oil phases), requires no sacrificial templates, and employs a minimal number of steps. Our approach exploits the electrostatic complexation of oppositely charged polymers dissolved in aqueous media. Specifically, droplets of an anionic biopolymer are generated using a simple microcapillary device, with the droplets being sheared off the capillary tip by pulses of gas (air or nitrogen). The liquid droplets are then introduced into a reservoir whereupon they encounter multivalent cations as well as a cationic biopolymer; thereby, a solid shell is formed around each droplet by electrostatic interactions between the polymers while the core is ionically cross-linked into a gel. In the next step, a discrete number of these capsules are encapsulated within a larger outer capsule by repeating the same process with a wider capillary. Our approach allows us to control the overall diameter of these multicompartment capsules (MCCs) (∼300-500 μm), the diameters of the inner compartments (∼100-300 μm), and the number of inner compartments in an MCC (1 to >5). More importantly, we can encapsulate different payloads in each of the inner compartments, including colloidal particles, enzymes, and microbial cells, in all cases preserving their native functions. A hallmark of biological cells is the existence of cascade processes, where products created in one organelle are transported and used in another. As an initial demonstration of the capabilities afforded by our MCCs, we study a simple cascade process involving two strains of bacteria (E. coli), which communicate through small molecules known as autoinducers. In one compartment of the MCC, we cultivate E. coli that produces autoinducer 2 (AI-2) in the presence of growth media. The AI-2 then diffuses into an adjacent compartment within the MCC wherein a reporter strain of E. coli is cultivated. The reporter E. coli imbibes the AI-2 and in turn, produces a fluorescence response. Thus, the action (AI-2 production) and response (fluorescence signal) are localized within different compartments in the same MCC. We believe this study is an important advance in the path towards an artificial cell.
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Affiliation(s)
- Annie Xi Lu
- Department of Chemical and Biomolecular Engineering , University of Maryland , College Park , MD 20742 , USA .
| | - Hyuntaek Oh
- Department of Chemical and Biomolecular Engineering , University of Maryland , College Park , MD 20742 , USA .
| | - Jessica L Terrell
- Fischell Department of Bioengineering , University of Maryland , College Park , MD 20742 , USA
| | - William E Bentley
- Department of Chemical and Biomolecular Engineering , University of Maryland , College Park , MD 20742 , USA .
- Fischell Department of Bioengineering , University of Maryland , College Park , MD 20742 , USA
| | - Srinivasa R Raghavan
- Department of Chemical and Biomolecular Engineering , University of Maryland , College Park , MD 20742 , USA .
- Fischell Department of Bioengineering , University of Maryland , College Park , MD 20742 , USA
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Simó G, Fernández‐Fernández E, Vila‐Crespo J, Ruipérez V, Rodríguez‐Nogales JM. Research progress in coating techniques of alginate gel polymer for cell encapsulation. Carbohydr Polym 2017; 170:1-14. [DOI: 10.1016/j.carbpol.2017.04.013] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 04/04/2017] [Accepted: 04/08/2017] [Indexed: 11/27/2022]
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Kim BJ, Han S, Lee KB, Choi IS. Biphasic Supramolecular Self-Assembly of Ferric Ions and Tannic Acid across Interfaces for Nanofilm Formation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1700784. [PMID: 28523825 DOI: 10.1002/adma.201700784] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 04/07/2017] [Indexed: 06/07/2023]
Abstract
Cell nanoencapsulation provides a chemical tool for the isolation and protection of living cells from harmful, and often lethal, external environments. Although several strategies are available to form nanometric films, most methods heavily rely on time-consuming multistep processes and are not biocompatible. Here, the interfacial supramolecular self-assembly and film formation of ferric ions (FeIII ) and tannic acid (TA) in biphasic systems is reported, where FeIII and TA come into contact each other and self-assemble across the interface of two immiscible phases. The interfacial nanofilm formation developed is simple, fast, and cytocompatible. Its versatility is demonstrated with various biphasic systems: hollow microcapsules, encasing microbial or mammalian cells, that are generated at the water-oil interface in a microfluidic device; a cytoprotective FeIII -TA shell that forms on the surface of the alginate microbead, which then entraps probiotic Lactobacillus acidophilus; and a pericellular FeIII -TA shell that forms on individual Saccharomyces cerevisiae. This biphasic interfacial reaction system provides a simple but versatile structural motif in materials science, as well as advancing chemical manipulability of living cells.
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Affiliation(s)
- Beom Jin Kim
- Center for Cell-Encapsulation Research, Department of Chemistry, KAIST, Daejeon, 34141, South Korea
| | - Sol Han
- Center for Cell-Encapsulation Research, Department of Chemistry, KAIST, Daejeon, 34141, South Korea
| | - Kyung-Bok Lee
- Division of Bioconvergence Analysis, Korea Basic Science Institute, Daejeon, 34133, South Korea
| | - Insung S Choi
- Center for Cell-Encapsulation Research, Department of Chemistry, KAIST, Daejeon, 34141, South Korea
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Artificial Spores: Immunoprotective Nanocoating of Red Blood Cells with Supramolecular Ferric Ion-Tannic Acid Complex. Polymers (Basel) 2017; 9:polym9040140. [PMID: 30970819 PMCID: PMC6432373 DOI: 10.3390/polym9040140] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 04/12/2017] [Accepted: 04/12/2017] [Indexed: 01/22/2023] Open
Abstract
The blood-type-mismatch problem, in addition to shortage of blood donation, in blood transfusion has prompted the researchers to develop universal blood that does not require blood typing. In this work, the "cell-in-shell" (i.e., artificial spore) approach is utilized to shield the immune-provoking epitopes on the surface of red blood cells (RBCs). Individual RBCs are successfully coated with supramolecular metal-organic coordination complex of ferric ion (FeIII) and tannic acid (TA). The use of isotonic saline (0.85% NaCl) is found to be critical in the formation of stable, reasonably thick (20 nm) shells on RBCs without any aggregation and hemolysis. The formed "RBC-in-shell" structures maintain their original shapes, and effectively attenuate the antibody-mediated agglutination. Moreover, the oxygen-carrying capability of RBCs is not deteriorated after shell formation. This work suggests a simple but fast method for generating immune-camouflaged RBCs, which would contribute to the development of universal blood.
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58
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Choi D, Park J, Heo J, Oh TI, Lee E, Hong J. Multifunctional Collagen and Hyaluronic Acid Multilayer Films on Live Mesenchymal Stem Cells. ACS APPLIED MATERIALS & INTERFACES 2017; 9:12264-12271. [PMID: 28322547 DOI: 10.1021/acsami.7b00365] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cell encapsulation has been reported to convey cytoprotective effects and to better maintain cell survival. In contrast to other studies, our report shows that the deposition of two major biomacromolecules, collagen type I (Col) and hyaluronic acid (HA), on mesenchymal stem cells (MSCs) does not entirely block the cell plasma membrane surface. Instead, a considerable amount of the surface remained uncovered or only slightly covered, as confirmed by TEM observation and by FACS analysis based on quantitative surface labeling. Despite this structure showing openness and flexibility, the multilayer Col/HA films significantly increased cell survival in the attachment-deprived culture condition. In terms of stem cell characteristics, the MSCs still showed functional cell activity after film deposition, as evidenced by their colony-forming activity and in vitro osteogenic differentiation. The Col/HA multilayer films could provide a cytoprotective effect and induce osteogenic differentiation without deteriorating effect or inhibition of cellular attachment, showing that this technique can be a valuable tool for modulating stem cell activities.
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Affiliation(s)
- Daheui Choi
- School of Chemical Engineering & Materials Science, College of Engineering, Chung-Ang University , 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
| | - Jaeseong Park
- Impedance Imaging Research Center, Kyung Hee University , 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Jiwoong Heo
- School of Chemical Engineering & Materials Science, College of Engineering, Chung-Ang University , 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
| | - Tong In Oh
- Impedance Imaging Research Center, Kyung Hee University , 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
- School of Medicine, Kyung Hee University , 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - EunAh Lee
- Impedance Imaging Research Center, Kyung Hee University , 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Jinkee Hong
- School of Chemical Engineering & Materials Science, College of Engineering, Chung-Ang University , 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
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59
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Yao S, Jin B, Liu Z, Shao C, Zhao R, Wang X, Tang R. Biomineralization: From Material Tactics to Biological Strategy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605903. [PMID: 28229486 DOI: 10.1002/adma.201605903] [Citation(s) in RCA: 152] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 01/31/2017] [Indexed: 05/23/2023]
Abstract
Biomineralization is an important tactic by which biological organisms produce hierarchically structured minerals with marvellous functions. Biomineralization studies typically focus on the mediation function of organic matrices on inorganic minerals, which helps scientists to design and synthesize bioinspired functional materials. However, the presence of inorganic minerals may also alter the native behaviours of organic matrices and even biological organisms. This progress report discusses the latest achievements relating to biomineralization mechanisms, the manufacturing of biomimetic materials and relevant applications in biological and biomedical fields. In particular, biomineralized vaccines and algae with improved thermostability and photosynthesis, respectively, demonstrate that biomineralization is a strategy for organism evolution via the rational design of organism-material complexes. The successful modification of biological systems using materials is based on the regulatory effect of inorganic materials on organic organisms, which is another aspect of biomineralization control. Unlike previous studies, this study integrates materials and biological science to achieve a more comprehensive view of the mechanisms and applications of biomineralization.
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Affiliation(s)
- Shasha Yao
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Biao Jin
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Zhaoming Liu
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Changyu Shao
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Ruibo Zhao
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Xiaoyu Wang
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Ruikang Tang
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou, Zhejiang, 310027, China
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60
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Yesilyurt V, Veiseh O, Doloff JC, Li J, Bose S, Xie X, Bader AR, Chen M, Webber MJ, Vegas AJ, Langer R, Anderson DG. A Facile and Versatile Method to Endow Biomaterial Devices with Zwitterionic Surface Coatings. Adv Healthc Mater 2017; 6:10.1002/adhm.201601091. [PMID: 27976536 PMCID: PMC5322155 DOI: 10.1002/adhm.201601091] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Indexed: 01/10/2023]
Abstract
The surface modification of implantable biomaterials with zwitterionic phosphorylcholine polymer is demonstrated through mussel-mimetic catecholamine polymer thin films. Using this method, the surfaces of alginate hydrogel microspheres and polystyrene microbeads, a model material known to produce robust foreign body responses and fibrosis, are successfully modified to reduce the tissue reaction by reducing the fibrosis in immunocompetent C57BL/6J mice.
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Affiliation(s)
- Volkan Yesilyurt
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Omid Veiseh
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Joshua C Doloff
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Jie Li
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Suman Bose
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Xi Xie
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Andrew R Bader
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Michael Chen
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Matthew J Webber
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Arturo J Vegas
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Robert Langer
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Daniel G Anderson
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Anesthesiology, Boston Children's Hospital, Boston, MA, 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
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Nador F, Guisasola E, Baeza A, Villaecija MAM, Vallet-Regí M, Ruiz-Molina D. Synthesis of Polydopamine-Like Nanocapsules via Removal of a Sacrificial Mesoporous Silica Template with Water. Chemistry 2016; 23:2753-2758. [DOI: 10.1002/chem.201604631] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Fabiana Nador
- Catalan Institute of Nanoscience and Nanotechnology (ICN2); CSIC and The Barcelona Institute of Science and Technology, Edificio ICN2, Campus UAB, Bellaterra; 08193 Barcelona Spain
| | - Eduardo Guisasola
- Depto. Química Inorgánica y Bioinorgánica, Facultad de Farmacia; Instituto de Investigación Sanitaria Hospital 12 de Octubre; i+12 Universidad Complutense de Madrid; Plaza Ramon y Cajal s/n. 28040 Madrid Spain
- Centro de Investigación Biomédica en Red de Bioingeniería; Biomateriales y Nanomedicina (CIBER-BBN); Av. Monforte de Lemos, 3-5. Pabellón 11. Planta 0 28029 Madrid Spain
| | - Alejandro Baeza
- Depto. Química Inorgánica y Bioinorgánica, Facultad de Farmacia; Instituto de Investigación Sanitaria Hospital 12 de Octubre; i+12 Universidad Complutense de Madrid; Plaza Ramon y Cajal s/n. 28040 Madrid Spain
- Centro de Investigación Biomédica en Red de Bioingeniería; Biomateriales y Nanomedicina (CIBER-BBN); Av. Monforte de Lemos, 3-5. Pabellón 11. Planta 0 28029 Madrid Spain
| | - Miguel Angel Moreno Villaecija
- Catalan Institute of Nanoscience and Nanotechnology (ICN2); CSIC and The Barcelona Institute of Science and Technology, Edificio ICN2, Campus UAB, Bellaterra; 08193 Barcelona Spain
| | - Maria Vallet-Regí
- Depto. Química Inorgánica y Bioinorgánica, Facultad de Farmacia; Instituto de Investigación Sanitaria Hospital 12 de Octubre; i+12 Universidad Complutense de Madrid; Plaza Ramon y Cajal s/n. 28040 Madrid Spain
- Centro de Investigación Biomédica en Red de Bioingeniería; Biomateriales y Nanomedicina (CIBER-BBN); Av. Monforte de Lemos, 3-5. Pabellón 11. Planta 0 28029 Madrid Spain
| | - Daniel Ruiz-Molina
- Catalan Institute of Nanoscience and Nanotechnology (ICN2); CSIC and The Barcelona Institute of Science and Technology, Edificio ICN2, Campus UAB, Bellaterra; 08193 Barcelona Spain
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Mimicking the cell membrane: bio-inspired simultaneous functions with monovalent anion selectivity and antifouling properties of anion exchange membrane. Sci Rep 2016; 6:37285. [PMID: 27853255 PMCID: PMC5112527 DOI: 10.1038/srep37285] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 10/26/2016] [Indexed: 01/01/2023] Open
Abstract
A new bio-inspired method was applied in this study to simultaneously improve the monovalent anion selectivity and antifouling properties of anion exchange membranes (AEMs). Three-layer architecture was developed by deposition of polydopamine (PDA) and electro-deposition of N-O-sulfonic acid benzyl chitosan (NSBC). The innermost and outermost layers were PDA with different deposition time. The middle layer was prepared by NSBC. Fourier transform infrared spectroscopy and scanning electron microscopy confirmed that PDA and NSBC were successfully modified on the surfaces of AEMs. The contact angle of the membranes indicated an improved hydrophilicity of the modified membranes. A series of electrodialysis experiments in which Cl−/SO42− separation was studied, demonstrating the monovalent anion selectivity of the samples. The Cl−/SO42− permselectivity of the modified membranes can reach up to 2.20, higher than that of the commercial membrane (only 0.78) during 90 minutes in electrodialysis (ED). The increase value of the resistance of the membranes was also measured to evaluate the antifouling properties. Sodium dodecyl benzene sulfonate (SDBS) was used as the fouling material in the ED process and the membrane area resistance of modified membrane increase value of was only 0.08 Ωcm2 30 minutes later.
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63
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Ding Y, Su S, Zhang R, Shao L, Zhang Y, Wang B, Li Y, Chen L, Yu Q, Wu Y, Nie G. Precision combination therapy for triple negative breast cancer via biomimetic polydopamine polymer core-shell nanostructures. Biomaterials 2016; 113:243-252. [PMID: 27829203 DOI: 10.1016/j.biomaterials.2016.10.053] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 10/29/2016] [Accepted: 10/30/2016] [Indexed: 01/10/2023]
Abstract
Photothermal-based combination therapy using functional nanomaterials shows great promise in eradication of aggressive tumors and improvement of drug sensitivity. The therapeutic efficacy and adverse effects of drug combinations depend on the precise control of timely tumor-localized drug release. Here a polymer-dopamine nanocomposite is designed for combination therapy, thermo-responsive drug release and prevention of uncontrolled drug leakage. The thermo-sensitive co-polymer poly (2-(2-methoxyethoxy) ethyl methacrylate-co-oligo (ethylene glycol) methacrylate)-co-2-(dimethylamino) ethyl methacrylate-b-poly (D, l-lactide-co-glycolide) is constructed into core-shell structured nanoparticles for co-encapsulation of two cytotoxic drugs and absorption of small interfering RNAs against survivin. The drug-loaded nanoparticles are surface-coated with polydopamine which confers the nanoformulation with photothermal activity and protects drugs from burst release. Under tumor-localized laser irradiation, polydopamine generates sufficient heat, resulting in nanoparticle collapse and instant drug release within the tumor. The combination strategy of photothermal, chemo-, and gene therapy leads to triple-negative breast cancer regression, with a decrease in the chemotherapeutic drug dosage to about 1/20 of conventional dose. This study establishes a powerful nanoplatform for precisely controlled combination therapy, with dramatic improvement of therapeutic efficacy and negligible side effects.
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Affiliation(s)
- Yanping Ding
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), 11 Beiyitiao, Zhongguancun, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shishuai Su
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), 11 Beiyitiao, Zhongguancun, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruirui Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), 11 Beiyitiao, Zhongguancun, Beijing 100190, China
| | - Leihou Shao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), 11 Beiyitiao, Zhongguancun, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yinlong Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), 11 Beiyitiao, Zhongguancun, Beijing 100190, China; College of Pharmaceutical Science, Jilin University, Changchun 130021, China
| | - Bin Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), 11 Beiyitiao, Zhongguancun, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yiye Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), 11 Beiyitiao, Zhongguancun, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Long Chen
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), 11 Beiyitiao, Zhongguancun, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qun Yu
- Department of Immunohematology, Beijing Institute of Transfusion Medicine, 27 Taiping Road, Beijing 100850, China
| | - Yan Wu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), 11 Beiyitiao, Zhongguancun, Beijing 100190, China.
| | - Guangjun Nie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), 11 Beiyitiao, Zhongguancun, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Wu QX, Xu X, Xie Q, Tong WY, Chen Y. Evaluation of chitosan hydrochloride-alginate as enteric micro-probiotic-carrier with dual protective barriers. Int J Biol Macromol 2016; 93:665-671. [PMID: 27632950 DOI: 10.1016/j.ijbiomac.2016.09.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 09/08/2016] [Accepted: 09/11/2016] [Indexed: 10/21/2022]
Abstract
In this study, the cells-free and cells-loaded chitosan hydrochloride-alginate (CHC-Alg) microcapsules were firstly fabricated with polyelectrolyte complexes via an orifice-polymerization method. Scanning electron microscope images showed that the CHC-Alg microcapsules had a typical shell-core structure and the model probiotic cells (Bacillus licheniformis) were embedded in the core in cells-loaded microcapsules. The microcapsules prepared had good thermal stability and moisture property (3.89%). Cells survival and release studies showed that the number of probiotic cells released from the cells-loaded microcapsules (approx. 6.36logCFUml-1) was 6.19logCFUml-1 when they were performed in the simulated gastric fluid (SGF, pH 2.0) for 1h and subsequently in the simulated intestinal fluid (SIF, 0.3%) for 4h. The CHC-Alg microcapsules with favorable swelling performances were helpful to permeate the harsh acid to protect the cells in the SGF (pH 2.0). The CHC-Alg microcapsules effectively protected the model probiotic cells, which was attributed to the "dual protective barriers" of the shell-core structure, that is, the primary barrier of the Alg hydrogel layer formed with a compact polymer matrix and the secondary barrier of the PEC film formed on the surface. The microcapsules prepared could be used as an enteric micro-probiotic-carrier for designing potential probiotic delivery systems.
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Affiliation(s)
- Qing-Xi Wu
- Key Laboratory of Eco-engineering and Biotechnology of Anhui Province, Integrated Biotechnology Laboratory, School of Life Sciences, Anhui University, Hefei 230601, China
| | - Xin Xu
- Key Laboratory of Eco-engineering and Biotechnology of Anhui Province, Integrated Biotechnology Laboratory, School of Life Sciences, Anhui University, Hefei 230601, China
| | - Qiu Xie
- Key Laboratory of Eco-engineering and Biotechnology of Anhui Province, Integrated Biotechnology Laboratory, School of Life Sciences, Anhui University, Hefei 230601, China
| | - Wang-Yu Tong
- Key Laboratory of Eco-engineering and Biotechnology of Anhui Province, Integrated Biotechnology Laboratory, School of Life Sciences, Anhui University, Hefei 230601, China.
| | - Yan Chen
- Key Laboratory of Eco-engineering and Biotechnology of Anhui Province, Integrated Biotechnology Laboratory, School of Life Sciences, Anhui University, Hefei 230601, China
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Farooq W, Lee HU, Huh YS, Lee YC. Chlorella vulgaris cultivation with an additive of magnesium-aminoclay. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.05.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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67
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Park JH, Hong D, Lee J, Choi IS. Cell-in-Shell Hybrids: Chemical Nanoencapsulation of Individual Cells. Acc Chem Res 2016; 49:792-800. [PMID: 27127837 DOI: 10.1021/acs.accounts.6b00087] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Nature has developed a fascinating strategy of cryptobiosis ("secret life") for counteracting the stressful, and often lethal, environmental conditions that fluctuate sporadically over time. For example, certain bacteria sporulate to transform from a metabolically active, vegetative state to an ametabolic endospore state. The bacterial endospores, encased within tough biomolecular shells, withstand the extremes of harmful stressors, such as radiation, desiccation, and malnutrition, for extended periods of time and return to a vegetative state by breaking their protective shells apart when their environment becomes hospitable for living. Certain ciliates and even higher organisms, for example, tardigrades, and others are also found to adopt a cryptobiotic strategy for survival. A common feature of cryptobiosis is the structural presence of tough sheaths on cellular structures. However, most cells and cellular assemblies are not "spore-forming" and are vulnerable to the outside threats. In particular, mammalian cells, enclosed with labile lipid bilayers, are highly susceptible to in vitro conditions in the laboratory and daily life settings, making manipulation and preservation difficult outside of specialized conditions. The instability of living cells has been a main bottleneck to the advanced development of cell-based applications, such as cell therapy and cell-based sensors. A judicious question arises: can cellular tolerance against harmful stresses be enhanced by simply forming cell-in-shell hybrid structures? Experimental results suggest that the answer is yes. A micrometer-sized "Iron Man" can be generated by chemically forming an ultrathin (<100 nm) but durable shell on a "non-spore-forming" cell. Since the report on silica nanoencapsulation of yeast cells, in which cytoprotective yeast-in-silica hybrids were formed, several synthetic strategies have been developed to encapsulate individual cells in a cytocompatible fashion, mimicking the cryptobiotic cell-in-shell structures found in nature, for example, bacterial endospores. Bioinspired silicification and phenolics-based coatings are, so far, the main approaches to the formation of cytoprotective cell-in-shell hybrids, because they ensure cell viability during encapsulations and also generate durable nanoshells on cell surfaces. The resulting cell-in-shell hybrids extrinsically possess enhanced resistance to external aggressors, and more intriguingly, the encapsulation alters their metabolic activity, exemplified by retarded or suppressed cell cycle progression. In addition, recent developments in the field have further advanced the synthetic tools available to the stage of chemical sporulation and germination of mammalian cells, where cytoprotective shells are formed on labile mammalian cells and broken apart on demand. For example, individual HeLa cells are coated with a metal-organic complex of ferric ion and tannic acid, and cellular adherence and proliferation are controlled by the programmed shell formation and degradation. Based on these demonstrations, the (degradable) cell-in-shell hybrids are anticipated to find their applications in various biomedical and bionanotechnological areas, such as cytotherapeutics, high-throughput screening, sensors, and biocatalysis, as well as providing a versatile research platform for single-cell biology.
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Affiliation(s)
- Ji Hun Park
- Center for Cell-Encapsulation
Research, Department of Chemistry, KAIST, Daejeon 34141, Korea
| | - Daewha Hong
- Center for Cell-Encapsulation
Research, Department of Chemistry, KAIST, Daejeon 34141, Korea
| | - Juno Lee
- Center for Cell-Encapsulation
Research, Department of Chemistry, KAIST, Daejeon 34141, Korea
| | - Insung S. Choi
- Center for Cell-Encapsulation
Research, Department of Chemistry, KAIST, Daejeon 34141, Korea
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68
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Zhang BB, Wang L, Charles V, Rooke JC, Su BL. Robust and Biocompatible Hybrid Matrix with Controllable Permeability for Microalgae Encapsulation. ACS APPLIED MATERIALS & INTERFACES 2016; 8:8939-8946. [PMID: 27027232 DOI: 10.1021/acsami.6b00191] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Hybrid beads with entrapped microalgae Chlamydomonas reinhardtii were synthesized for the sustainable production of high value metabolites via photosynthesis. Encapsulating the microalgae requires an exquisite control of material properties, which has been achieved by modifying the composition (alginate, polycation, and silica). A coating of PDADMAC precluded cell leakage as indicated by the OD750 value of the culture medium, and the homogeneous distribution of silica prevented bead shrinkage from the strong electronic force of PDADMAC, resulting in a robust and biocompatible matrix for the cells. Besides fabricating suitable porous beads for the diffusion of expected metabolites, the permeability can be controlled to a certain degree by applying different molecular weights of PDADMAC. The hybrid alginate+silica/CaCl2+PDADMAC beads possessed sufficient mechanical rigidity to sheer force under constant stirring and good chemical stability to chelating agents such as sodium citrate. Moreover, the encapsulated cells exhibited excellent long-term viability and cellular functionality, which retained about 81.5% of the original value after a 120 day encapsulation as observed by microscopy and oximetry measurement. This study is not only significant for understanding the critical role of polycations and silica involved in the synthesis of hybrid beads but also important for real-scale bioengineering applications.
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Affiliation(s)
- Bo-Bo Zhang
- Laboratory of Inorganic Materials Chemistry, University of Namur , rue de Bruxelles, 61, Namur B-5000, Belgium
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University , Wuxi 214122, P. R. China
| | - Li Wang
- Laboratory of Inorganic Materials Chemistry, University of Namur , rue de Bruxelles, 61, Namur B-5000, Belgium
- Laboratory of Living Materials, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Luoshi Road 122, Wuhan 430070, P. R. China
| | - Valérie Charles
- Laboratory of Inorganic Materials Chemistry, University of Namur , rue de Bruxelles, 61, Namur B-5000, Belgium
| | - Joanna C Rooke
- Laboratory of Inorganic Materials Chemistry, University of Namur , rue de Bruxelles, 61, Namur B-5000, Belgium
| | - Bao-Lian Su
- Laboratory of Inorganic Materials Chemistry, University of Namur , rue de Bruxelles, 61, Namur B-5000, Belgium
- Laboratory of Living Materials, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Luoshi Road 122, Wuhan 430070, P. R. China
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Zhao R, Wang B, Yang X, Xiao Y, Wang X, Shao C, Tang R. A Drug-Free Tumor Therapy Strategy: Cancer-Cell-Targeting Calcification. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601364] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ruibo Zhao
- Center for Biomaterials and Biopathways; Department of Chemistry; Zhejiang University; Hangzhou Zhejiang 310027 China
| | - Ben Wang
- Cancer Institute; The Second Affiliated Hospital of Zhejiang University College of Medicine; Hangzhou Zhejiang 310009 China
- Institute of Translational Medicine; Zhejiang University College of Medicine; Hangzhou Zhejiang 310029 China
| | - Xinyan Yang
- Institute of Biological Engineering; Zhejiang Academy of Medical Sciences; Hangzhou Zhejiang 310013 China
| | - Yun Xiao
- Cancer Institute; The Second Affiliated Hospital of Zhejiang University College of Medicine; Hangzhou Zhejiang 310009 China
- Institute of Translational Medicine; Zhejiang University College of Medicine; Hangzhou Zhejiang 310029 China
| | - Xiaoyu Wang
- Qiushi Academy for Advanced Studies; Zhejiang University; Hangzhou Zhejiang 310027 China
| | - Changyu Shao
- Center for Biomaterials and Biopathways; Department of Chemistry; Zhejiang University; Hangzhou Zhejiang 310027 China
| | - Ruikang Tang
- Center for Biomaterials and Biopathways; Department of Chemistry; Zhejiang University; Hangzhou Zhejiang 310027 China
- Qiushi Academy for Advanced Studies; Zhejiang University; Hangzhou Zhejiang 310027 China
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70
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Zhao R, Wang B, Yang X, Xiao Y, Wang X, Shao C, Tang R. A Drug-Free Tumor Therapy Strategy: Cancer-Cell-Targeting Calcification. Angew Chem Int Ed Engl 2016; 55:5225-9. [DOI: 10.1002/anie.201601364] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Ruibo Zhao
- Center for Biomaterials and Biopathways; Department of Chemistry; Zhejiang University; Hangzhou Zhejiang 310027 China
| | - Ben Wang
- Cancer Institute; The Second Affiliated Hospital of Zhejiang University College of Medicine; Hangzhou Zhejiang 310009 China
- Institute of Translational Medicine; Zhejiang University College of Medicine; Hangzhou Zhejiang 310029 China
| | - Xinyan Yang
- Institute of Biological Engineering; Zhejiang Academy of Medical Sciences; Hangzhou Zhejiang 310013 China
| | - Yun Xiao
- Cancer Institute; The Second Affiliated Hospital of Zhejiang University College of Medicine; Hangzhou Zhejiang 310009 China
- Institute of Translational Medicine; Zhejiang University College of Medicine; Hangzhou Zhejiang 310029 China
| | - Xiaoyu Wang
- Qiushi Academy for Advanced Studies; Zhejiang University; Hangzhou Zhejiang 310027 China
| | - Changyu Shao
- Center for Biomaterials and Biopathways; Department of Chemistry; Zhejiang University; Hangzhou Zhejiang 310027 China
| | - Ruikang Tang
- Center for Biomaterials and Biopathways; Department of Chemistry; Zhejiang University; Hangzhou Zhejiang 310027 China
- Qiushi Academy for Advanced Studies; Zhejiang University; Hangzhou Zhejiang 310027 China
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71
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Roda A, Mirasoli M, Michelini E, Di Fusco M, Zangheri M, Cevenini L, Roda B, Simoni P. Progress in chemical luminescence-based biosensors: A critical review. Biosens Bioelectron 2016; 76:164-79. [DOI: 10.1016/j.bios.2015.06.017] [Citation(s) in RCA: 147] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 06/03/2015] [Accepted: 06/07/2015] [Indexed: 12/12/2022]
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72
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Zhang QM, Serpe MJ. Versatile Method for Coating Surfaces with Functional and Responsive Polymer-Based Films. ACS APPLIED MATERIALS & INTERFACES 2015; 7:27547-27553. [PMID: 26640982 DOI: 10.1021/acsami.5b09875] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A versatile surface modification technique was developed to yield poly(N-isopropylacrylamide) (pNIPAm) microgel-based thin films on a variety of substrates, e.g., metals, nonmetals, and polymers. Because the chemistry, and hence functionality and responsivity, of the pNIPAm-based microgels is easily tuned, multifunctional and responsive thin films could be generated on many different surfaces without varying the coating conditions. In one case, we showed that fluorescent/light emitting thin films could be generated using crystal violet-modified microgels. Antibacterial films could be obtained using silver nanoparticle-modified pNIPAm-based microgels. Finally, we show that thin films fabricated via the methods here could be used as a component in optical sensors. Although we show only a few examples of the utility of this approach, we feel that the apparent universality of the technique can be extended to countless other applications.
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Affiliation(s)
- Qiang Matthew Zhang
- Department of Chemistry, University of Alberta , 11227 Saskatchewan Drive, Edmonton, Alberta T6G 2G2, Canada
| | - Michael J Serpe
- Department of Chemistry, University of Alberta , 11227 Saskatchewan Drive, Edmonton, Alberta T6G 2G2, Canada
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73
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Ouyang S, Hu X, Zhou Q. Envelopment-Internalization Synergistic Effects and Metabolic Mechanisms of Graphene Oxide on Single-Cell Chlorella vulgaris Are Dependent on the Nanomaterial Particle Size. ACS APPLIED MATERIALS & INTERFACES 2015; 7:18104-18112. [PMID: 26221973 DOI: 10.1021/acsami.5b05328] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The interactions between nanomaterials and cells are fundamental in biological responses to nanomaterials. However, the size-dependent synergistic effects of envelopment and internalization as well as the metabolic mechanisms of nanomaterials have remained unknown. The nanomaterials tested here were larger graphene oxide nanosheets (GONS) and small graphene oxide quantum dots (GOQD). GONS intensively entrapped single-celled Chlorella vulgaris, and envelopment by GONS reduced the cell permeability. In contrast, GOQD-induced remarkable shrinkage of the plasma membrane and then enhanced cell permeability through strong internalization effects such as plasmolysis, uptake of nanomaterials, an oxidative stress increase, and inhibition of cell division and chlorophyll biosynthesis. Metabolomics analysis showed that amino acid metabolism was sensitive to nanomaterial exposure. Shrinkage of the plasma membrane is proposed to be linked to increases in the isoleucine levels. The inhibition of cell division and chlorophyll a biosynthesis was associated with decreases in aspartic acid and serine, the precursors of chlorophyll a. The increases in mitochondrial membrane potential loss and oxidative stress were correlated with an increase in linolenic acid. The above metabolites can be used as indicators of the corresponding biological responses. These results enhance our systemic understanding of the size-dependent biological effects of nanomaterials.
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Affiliation(s)
- Shaohu Ouyang
- †Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
| | - Xiangang Hu
- †Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
| | - Qixing Zhou
- †Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
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Mazutis L, Vasiliauskas R, Weitz DA. Microfluidic Production of Alginate Hydrogel Particles for Antibody Encapsulation and Release. Macromol Biosci 2015. [PMID: 26198619 DOI: 10.1002/mabi.201500226] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Owing to their biocompatibility and reduced side effects, natural polymers represent an attractive choice for producing drug delivery systems. Despite few successful examples, however, the production of monodisperse biopolymer-based particles is often hindered by high viscosity of polymer fluids. In this work, we present a microfluidic approach for production of alginate-based particles carrying encapsulated antibodies. We use a triple-flow micro-device to induce hydrogel formation inside droplets before their collection off-chip. The fast mixing and gelation process produced alginate particles with a unique biconcave shape and dimensions of the mammalian cells. We show slow and fast dissolution of particles in different buffers and evaluate antibody release over time.
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Affiliation(s)
- Linas Mazutis
- Vilnius University Institute of Biotechnology, Vilnius LT-02241, Lithuania. .,Harvard University, School of Engineering and Applied, Cambridge MA 02138, USA.
| | | | - David A Weitz
- Harvard University, School of Engineering and Applied, Cambridge MA 02138, USA
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75
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Kim BJ, Park T, Park SY, Han SW, Lee HS, Kim YG, Choi IS. Control of Microbial Growth in Alginate/Polydopamine Core/Shell Microbeads. Chem Asian J 2015; 10:2130-3. [DOI: 10.1002/asia.201500360] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Beom Jin Kim
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 305-701 Korea
| | - Taegyun Park
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 305-701 Korea
| | - So-Young Park
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Korea
| | - Sang Woo Han
- Molecular-Level Interface Research Center, Department of Chemistry; KAIST, Daejeon; 305-701 Korea
| | - Hee-Seung Lee
- Molecular-Level Interface Research Center, Department of Chemistry; KAIST, Daejeon; 305-701 Korea
| | - Yang-Gyun Kim
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Korea
| | - Insung S. Choi
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 305-701 Korea
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