1
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Yu C, Gao Y, Zhang Y, Wang J, Zhang Y, Li J, Zhang X, Wu Z, Zhang X. A Targeted Photosensitizer Mediated by Visible Light for Efficient Therapy of Bacterial Keratitis. Biomacromolecules 2021; 22:3704-3717. [PMID: 34380309 DOI: 10.1021/acs.biomac.1c00461] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Bacterial keratitis is a serious bacterial infection of the cornea that can cause sight loss in severe cases because of the sharp decline of efficacious antibiotics. Herein, a targeted photosensitizer based on BODIPY severing as a photobactericidal agent was developed for treating bacterial keratitis. The water solubility of the material was as high as 10 mg/mL, which was attributable to the introduction of pathogen-targeting galactose and fucose. The photosensitizer was able to preferentially bind Pseudomonas aeruginosa instead of mammalian cells and trigger the aggregation of bacteria, which ultimately facilitated effective pathogen ablation upon the generation of reactive oxygen species (ROS) via laser irradiation. Photoexcited targeted photosensitizers can promote wound healing by eradicating P. aeruginosa in rat eyes and reducing the inflammatory response, thus exhibiting the significant therapeutic effect on bacterial keratitis. We also performed molecular level mechanistic studies using the unique field-induced droplet ionization mass spectrometry methodology and confirmed that the generated ROS were mainly singlet oxygen that caused lipid peroxidation (Type II mechanism). We anticipate that the targeted photosensitizer will have great potential in the application of clinical photodynamic therapy to ocular infection.
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Affiliation(s)
- Cong Yu
- Key Laboratory of Functional Polymer Materials of Ministry Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yingchao Gao
- Key Laboratory of Functional Polymer Materials of Ministry Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yanlong Zhang
- Tianjin Key Laboratory of Biomedical Detection Techniques & Instruments, State Key Laboratory of Precision Measurement Technology and Instrument, School of Precision Instruments & Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China
| | - Jie Wang
- Key Laboratory of Functional Polymer Materials of Ministry Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yufei Zhang
- Key Laboratory of Functional Polymer Materials of Ministry Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jie Li
- Key Laboratory of Functional Polymer Materials of Ministry Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xinxing Zhang
- Key Laboratory of Functional Polymer Materials of Ministry Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhongming Wu
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
| | - Xinge Zhang
- Key Laboratory of Functional Polymer Materials of Ministry Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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2
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Ghamari Kargar P, Ravanjamjah A, Bagherzade G. A novel
water‐dispersible
and magnetically recyclable nickel nanoparticles for the one‐pot
reduction‐Schiff
base condensation of nitroarenes in pure water. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202100172] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
| | - Asiye Ravanjamjah
- Department of Chemistry, College of Sciences University of Birjand Birjand Iran
| | - Ghodsieh Bagherzade
- Department of Chemistry, College of Sciences University of Birjand Birjand Iran
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3
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Geervliet E, Moreno S, Baiamonte L, Booijink R, Boye S, Wang P, Voit B, Lederer A, Appelhans D, Bansal R. Matrix metalloproteinase-1 decorated polymersomes, a surface-active extracellular matrix therapeutic, potentiates collagen degradation and attenuates early liver fibrosis. J Control Release 2021; 332:594-607. [PMID: 33737203 DOI: 10.1016/j.jconrel.2021.03.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 03/08/2021] [Accepted: 03/12/2021] [Indexed: 02/07/2023]
Abstract
Liver fibrosis affects millions of people worldwide and is rising vastly over the past decades. With no viable therapies available, liver transplantation is the only curative treatment for advanced diseased patients. Excessive accumulation of aberrant extracellular matrix (ECM) proteins, mostly collagens, produced by activated hepatic stellate cells (HSCs), is a hallmark of liver fibrosis. Several studies have suggested an inverse correlation between collagen-I degrading matrix metalloproteinase-1 (MMP-1) serum levels and liver fibrosis progression highlighting reduced MMP-1 levels are associated with poor disease prognosis in patients with liver fibrosis. We hypothesized that delivery of MMP-1 might potentiate collagen degradation and attenuate fibrosis development. In this study, we report a novel approach for the delivery of MMP-1 using MMP-1 decorated polymersomes (MMPsomes), as a surface-active vesicle-based ECM therapeutic, for the treatment of liver fibrosis. The storage-stable and enzymatically active MMPsomes were fabricated by a post-loading of Psomes with MMP-1. MMPsomes were extensively characterized for the physicochemical properties, MMP-1 surface localization, stability, enzymatic activity, and biological effects. Dose-dependent effects of MMP-1, and effects of MMPsomes versus MMP-1, empty polymersomes (Psomes) and MMP-1 + Psomes on gene and protein expression of collagen-I, MMP-1/TIMP-1 ratio, migration and cell viability were examined in TGFβ-activated human HSCs. Finally, the therapeutic effects of MMPsomes, compared to MMP-1, were evaluated in vivo in carbon-tetrachloride (CCl4)-induced early liver fibrosis mouse model. MMPsomes exhibited favorable physicochemical properties, MMP-1 surface localization and improved therapeutic efficacy in TGFβ-activated human HSCs in vitro. In CCl4-induced early liver fibrosis mouse model, MMPsomes inhibited intra-hepatic collagen-I (ECM marker, indicating early liver fibrosis) and F4/80 (marker for macrophages, indicating liver inflammation) expression. In conclusion, our results demonstrate an innovative approach of MMP-1 delivery, using surface-decorated MMPsomes, for alleviating liver fibrosis.
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Affiliation(s)
- Eline Geervliet
- Translational Liver Research, Department of Medical Cell Biophysics, Technical Medical Centre, Faculty of Science and Technology, University of Twente, Drienerlolaan 5, 7522 NB Enschede, the Netherlands
| | - Silvia Moreno
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany
| | - Luca Baiamonte
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany
| | - Richell Booijink
- Translational Liver Research, Department of Medical Cell Biophysics, Technical Medical Centre, Faculty of Science and Technology, University of Twente, Drienerlolaan 5, 7522 NB Enschede, the Netherlands
| | - Susanne Boye
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany
| | - Peng Wang
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany; Technische Universität Dresden, Organic Chemistry of Polymers, 01062 Dresden, Germany
| | - Brigitte Voit
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany; Technische Universität Dresden, Organic Chemistry of Polymers, 01062 Dresden, Germany
| | - Albena Lederer
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany; Department of Chemistry and Polymer Science, Stellenbosch University, Matieland 7602, South Africa.
| | - Dietmar Appelhans
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany.
| | - Ruchi Bansal
- Translational Liver Research, Department of Medical Cell Biophysics, Technical Medical Centre, Faculty of Science and Technology, University of Twente, Drienerlolaan 5, 7522 NB Enschede, the Netherlands.
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4
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Moreno S, Sharan P, Engelke J, Gumz H, Boye S, Oertel U, Wang P, Banerjee S, Klajn R, Voit B, Lederer A, Appelhans D. Light-Driven Proton Transfer for Cyclic and Temporal Switching of Enzymatic Nanoreactors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2002135. [PMID: 32783385 DOI: 10.1002/smll.202002135] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/25/2020] [Indexed: 06/11/2023]
Abstract
Temporal activation of biological processes by visible light and subsequent return to an inactive state in the absence of light is an essential characteristic of photoreceptor cells. Inspired by these phenomena, light-responsive materials are very attractive due to the high spatiotemporal control of light irradiation, with light being able to precisely orchestrate processes repeatedly over many cycles. Herein, it is reported that light-driven proton transfer triggered by a merocyanine-based photoacid can be used to modulate the permeability of pH-responsive polymersomes through cyclic, temporally controlled protonation and deprotonation of the polymersome membrane. The membranes can undergo repeated light-driven swelling-contraction cycles without losing functional effectiveness. When applied to enzyme loaded-nanoreactors, this membrane responsiveness is used for the reversible control of enzymatic reactions. This combination of the merocyanine-based photoacid and pH-switchable nanoreactors results in rapidly responding and versatile supramolecular systems successfully used to switch enzymatic reactions ON and OFF on demand.
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Affiliation(s)
- Silvia Moreno
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069, Germany
| | - Priyanka Sharan
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069, Germany
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, 01062, Germany
- Materials Science Centre, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Johanna Engelke
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069, Germany
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, 01062, Germany
| | - Hannes Gumz
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069, Germany
- Center for Advancing Electronics Dresden, Technische Universität Dresden, Dresden, 01062, Germany
| | - Susanne Boye
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069, Germany
| | - Ulrich Oertel
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069, Germany
| | - Peng Wang
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069, Germany
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, 01062, Germany
| | - Susanta Banerjee
- Materials Science Centre, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Brigitte Voit
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069, Germany
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, 01062, Germany
- Center for Advancing Electronics Dresden, Technische Universität Dresden, Dresden, 01062, Germany
| | - Albena Lederer
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069, Germany
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, 01062, Germany
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - Dietmar Appelhans
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069, Germany
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5
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The chemistry of cross-linked polymeric vesicles and their functionalization towards biocatalytic nanoreactors. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04681-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
AbstractSelf-assembly of amphiphilic block copolymers into polymersomes continues to be a hot topic in modern research on biomimetics. Their well-known and valued mechanical strength can be increased even further if they are cross-linked. These additional bonds prevent a collapse or disassembly of the polymersomes and open the way towards smart nanoreactors. A variety of chemistries have been applied to obtain the desired cross-linked polymersomes, and therefore, the chemical approaches performed over time will be highlighted in this mini-review. Due to the large number of studies, a selected set of photo-cross-linked and pH-sensitive polymersomes will be specifically highlighted. This system has proven to be a very potent candidate for the formation of nanoreactors and drug delivery systems, and even for the formation of functional multicompartment cell mimics.
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6
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Kim J, Jeong S, Korneev R, Shin K, Kim KT. Cross-Linked Polymersomes with Reversible Deformability and Oxygen Transportability. Biomacromolecules 2019; 20:2430-2439. [PMID: 31059234 DOI: 10.1021/acs.biomac.9b00485] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Polymersomes are of interest as nanocarriers due to their physical and chemical robustness, which arises from the macromolecular nature of their block copolymer components. However, the physical robustness of polymersomes impairs transmembrane diffusion and responsiveness to mechanical forces. Polymer nanocarriers that can reversibly deform under stress while maintaining structural integrity and transmembrane diffusivity are desired for development of gas transport vehicles. Here, we report polymersomes composed of amphiphilic block copolymers containing polydimethylsiloxane with side-chain pendant vinyl groups. A reversibly deformable polymersome compartmentalizing membrane was obtained by cross-linkage of PEG- b-poly(dimethyl- r-methylvinyl)silane in a self-assembled bilayer via photoradical generation in aqueous media. The covalently cross-linked polymersomes exhibited superior physical robustness compared to unlinked polymersomes while maintaining deformability under stress. Transmembrane oxygen diffusion was confirmed when lumen-encapsulated Zn-porphyrin generated singlet O2 under irradiation, and the anthracene-9,10-dipropionic acid O2 quencher was consumed. Polymersome-encapsulated hemoglobin bound oxygen reversibly, indicating the polymersomes could be used as O2 carriers that reversibly deform without sacrificing structural integrity or oxygen transportability.
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Affiliation(s)
- Jiwon Kim
- Department of Chemistry , Seoul National University , Seoul 08826 , Korea
| | - Sungwoo Jeong
- Department of Chemistry and Institute of Biological Interfaces , Sogang University , Seoul 04107 , Korea
| | - Roman Korneev
- Center for Hybrid Nanostructures , University of Hamburg , Hamburg 22607 , Germany
| | - Kwanwoo Shin
- Department of Chemistry and Institute of Biological Interfaces , Sogang University , Seoul 04107 , Korea
| | - Kyoung Taek Kim
- Department of Chemistry , Seoul National University , Seoul 08826 , Korea
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7
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Zhao Y, Lu Z, Dai X, Wei X, Yu Y, Chen X, Zhang X, Li C. Glycomimetic-Conjugated Photosensitizer for Specific Pseudomonas aeruginosa Recognition and Targeted Photodynamic Therapy. Bioconjug Chem 2018; 29:3222-3230. [DOI: 10.1021/acs.bioconjchem.8b00600] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yu Zhao
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhentan Lu
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiaomei Dai
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiaosong Wei
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yunjian Yu
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xuelei Chen
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xinge Zhang
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Chaoxing Li
- 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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8
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Designing of membrane-active nano-antimicrobials based on cationic copolymer functionalized nanodiamond: Influence of hydrophilic segment on antimicrobial activity and selectivity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:307-316. [PMID: 30184755 DOI: 10.1016/j.msec.2018.06.067] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 05/10/2018] [Accepted: 06/29/2018] [Indexed: 11/24/2022]
Abstract
Designing cationic nano-antimicrobial is a promising solution for combating drug resistant microbes. In this work, hydrophilic cationic copolymer was applied for the surface functionalization of nanodiamonds (NDs) aiming at developing a highly membrane-active nano-antibacterial agent with satisfactory selectivity. As a result, after functionalization, the increased repulsive forces within NDs and interaction with solvent molecular network made the heavily aggregated pristine NDs break down into tiny nanoparticles with particle size ranging from 10 to 100 nm. The improved hydrophilicity and enlarged surface area endowed QND-H5 and QND-H10 a powerful bactericidal capability toward both of Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus). In the further bactericidal assessment, it was also demonstrated that the formation of hydrogen bonding between the 2-hydroxyethyl methacrylate (HEMA) side chains and lipid head groups of bacterial membrane also contributed to the enhanced bactericidal ability. Field emission scanning electron microscopy analysis confirmed that as-prepared nano-hybrid acted bactericidal ability via physical nature of outer membrane and cytoplasmic membrane-separating destruction mechanism toward E. coli, which may derive from the hydrogen bonding ability, making them more effective toward bacterial. More importantly, it was found that with just 10% of HEMA, QND-H10 displayed good selectivity toward bacteria over mammalian cells as shown by the high HC50 values with relatively low MIC values, suggesting the great potential application in medical fields. These results indicate that hydrogen bonding is an important element to achieve the desired high antibacterial activity and selectivity, particularly when cationic nano-antibacterial agents are required for medical application.
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9
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Villani S, Adami R, Reverchon E, Ferretti AM, Ponti A, Lepretti M, Caputo I, Izzo L. pH-sensitive polymersomes: controlling swelling via copolymer structure and chemical composition. J Drug Target 2017; 25:899-909. [PMID: 28812391 DOI: 10.1080/1061186x.2017.1363216] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
pH-sensitive vesicles used as drug delivery systems (DDSs) are generally composed of protonable copolymers. The disaggregation of these nanoparticles (NPs) during drug release implies the dispersion of positively charged cytotoxic polyelectrolytes in the human body. To alleviate such issue, we synthesised A(BC)n amphiphilic block copolymers with linear (n = 1) and branched (n = 2) architectures to obtain pH-sensitive vesicles capable of releasing drugs in acidic conditions via controlled swelling instead of disaggregation. We obtained this feature by fine-tuning the relative amount of pH-sensitive and hydrophobic monomers. We studied pH-driven swelling by measuring NPs size in neutral and acidic conditions, the latter typical of tumours or inflamed tissues (pH∼6) and lysosomes (pH∼4.5). Dynamic light scattering (DLS) and zeta potential data provided useful indications about the influence of architecture and chemical composition on NPs swelling, stability and polycation release. Results demonstrated that vesicles made of linear copolymers with ∼22-28% in mol of protonable monomers in the 'BC' block swelled more than other species following a pH change from pH 7.4 to pH 4.5. We finally evaluated the cytotoxicity of vesicles composed of linear species, and paclitaxel (PTX) release from the latter in both cancer and normal cells.
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Affiliation(s)
- Simone Villani
- a Dipartimento di Chimica e Biologia , Università degli Studi di Salerno , Fisciano , Italy
| | - Renata Adami
- b Dipartimento di Ingegneria Industriale , Università degli Studi di Salerno , Fisciano , Italy
| | - Ernesto Reverchon
- b Dipartimento di Ingegneria Industriale , Università degli Studi di Salerno , Fisciano , Italy
| | - Anna Maria Ferretti
- c Istituto di Scienze e Tecnologie Molecolari , Consiglio Nazionale delle Ricerche , Milano , Italy
| | - Alessandro Ponti
- c Istituto di Scienze e Tecnologie Molecolari , Consiglio Nazionale delle Ricerche , Milano , Italy
| | - Marilena Lepretti
- a Dipartimento di Chimica e Biologia , Università degli Studi di Salerno , Fisciano , Italy
| | - Ivana Caputo
- a Dipartimento di Chimica e Biologia , Università degli Studi di Salerno , Fisciano , Italy
| | - Lorella Izzo
- a Dipartimento di Chimica e Biologia , Università degli Studi di Salerno , Fisciano , Italy
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10
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Gumz H, Lai TH, Voit B, Appelhans D. Fine-tuning the pH response of polymersomes for mimicking and controlling the cell membrane functionality. Polym Chem 2017. [DOI: 10.1039/c7py00089h] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
To expand the biomedical applications of pH responsive polymersomes a concept is presented for precisely adjusting the pH triggered transition of the membrane permeability.
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Affiliation(s)
- Hannes Gumz
- Leibniz-Institut für Polymerforschung Dresden e.V
- 01069 Dresden
- Germany
- Organic Chemistry of Polymers
- Technische Universität Dresden
| | - Thu Hang Lai
- Leibniz-Institut für Polymerforschung Dresden e.V
- 01069 Dresden
- Germany
- Freie Universität Berlin
- Department of Biochemistry and Organic Chemistry
| | - Brigitte Voit
- Leibniz-Institut für Polymerforschung Dresden e.V
- 01069 Dresden
- Germany
- Organic Chemistry of Polymers
- Technische Universität Dresden
| | - Dietmar Appelhans
- Leibniz-Institut für Polymerforschung Dresden e.V
- 01069 Dresden
- Germany
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11
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Zhang J, Lu Z, Yu Z, Zhong W, Jiang H, Zhao Q, Li F, Zhang X, Wang D. Photosensitizer–AgNP composite with an ability to selectively recognize pathogen and enhanced photodynamic efficiency. NEW J CHEM 2017. [DOI: 10.1039/c7nj02204b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photosensitizer–AgNP composite could recognise bacteria smartly and showed greater photodynamic efficiency than did the free photosensitizer.
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Affiliation(s)
- Jiaqi Zhang
- Hubei Key Laboratory of Advanced Textile Materials & Application
- College of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Zhentan Lu
- Hubei Key Laboratory of Advanced Textile Materials & Application
- College of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Zhenguo Yu
- Hubei Key Laboratory of Advanced Textile Materials & Application
- College of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Weibing Zhong
- Hubei Key Laboratory of Advanced Textile Materials & Application
- College of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Haiqing Jiang
- Hubei Key Laboratory of Advanced Textile Materials & Application
- College of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Qinghua Zhao
- Hubei Key Laboratory of Advanced Textile Materials & Application
- College of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Fei Li
- Hubei Key Laboratory of Advanced Textile Materials & Application
- College of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Xinge Zhang
- Key Laboratory of Functional Polymer Materials Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- 94# Weijin Road
- Tianjin 300071
| | - Dong Wang
- Hubei Key Laboratory of Advanced Textile Materials & Application
- College of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430200
- China
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12
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13
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Incorporation of Amphipathic Diblock Copolymer in Lipid Bilayer for Improving pH Responsiveness. INT J POLYM SCI 2016. [DOI: 10.1155/2016/5879428] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Diblock copolymers (mPEG-b-PDPA), which were designed to possess pH-sensitivity as well as amphipathy, were used as an intelligent lock in the liposomal membrane. The so-called pH-sensitive liposomes were prepared by simple mixing of the synthesized mPEG-b-PDPA with phospholipids and cholesterol. Fluorescence polarization at pH 7.4 showed that the membrane stability of the hybrid liposome was significantly increased compared with the pure liposome. Therefore, in the neutral environment, the leakage of doxorubicin (DOX) was inhibited. However, when pH decreased to 6.0, DOX release rate increased by 60% due to the escape of copolymer. The effects of the membrane composition and the PDPA segment length on bilayer membrane functions were investigated. These results revealed that the synthesized copolymers increased the difference in DOX cumulative release between pH 7.4 and 6.0, that is, improved the pH-controllability of the drug release from hybrid liposomes.
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14
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Palivan CG, Goers R, Najer A, Zhang X, Car A, Meier W. Bioinspired polymer vesicles and membranes for biological and medical applications. Chem Soc Rev 2016; 45:377-411. [DOI: 10.1039/c5cs00569h] [Citation(s) in RCA: 413] [Impact Index Per Article: 51.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Biological membranes play an essential role in living organisms by providing stable and functional compartments, supporting signalling and selective transport. Combining synthetic polymer membranes with biological molecules promises to be an effective strategy to mimic the functions of cell membranes and apply them in artificial systems.
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Affiliation(s)
| | - Roland Goers
- Department of Chemistry
- University of Basel
- CH-4056 Basel
- Switzerland
- Department of Biosystems Science and Engineering
| | - Adrian Najer
- Department of Chemistry
- University of Basel
- CH-4056 Basel
- Switzerland
| | - Xiaoyan Zhang
- Department of Chemistry
- University of Basel
- CH-4056 Basel
- Switzerland
| | - Anja Car
- Department of Chemistry
- University of Basel
- CH-4056 Basel
- Switzerland
| | - Wolfgang Meier
- Department of Chemistry
- University of Basel
- CH-4056 Basel
- Switzerland
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15
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Gaitzsch J, Huang X, Voit B. Engineering Functional Polymer Capsules toward Smart Nanoreactors. Chem Rev 2015; 116:1053-93. [DOI: 10.1021/acs.chemrev.5b00241] [Citation(s) in RCA: 300] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jens Gaitzsch
- Department
of Chemistry, University College London, London WC1H 0AJ, United Kingdom
- Department
of Chemistry, University of Basel, Klingelbergstrasse 80, 4056 Basel, Basel-Stadt, Switzerland
| | - Xin Huang
- School
of Chemical Engineering and Technology, Harbin Institute of Technology, 150001 Harbin, Heilongjiang, China
| | - Brigitte Voit
- Leibniz-Institut fuer Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Saxony, Germany
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16
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Yassin MA, Appelhans D, Wiedemuth R, Formanek P, Boye S, Lederer A, Temme A, Voit B. Overcoming concealment effects of targeting moieties in the PEG corona: controlled permeable polymersomes decorated with folate-antennae for selective targeting of tumor cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:1580-1591. [PMID: 25363281 DOI: 10.1002/smll.201402581] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Indexed: 06/04/2023]
Abstract
In the context of diligent efforts to improve the tumor targeting efficiency of drug carriers, a shape-persistent polymersome which possess a pH-tunable membrane as well as folate targeting antennae is reported. The membrane of such polymersomes behaves as gate which undergoes "on" and "off" switches in response to pH stimuli. Thus, polymersomes can effectively prohibit the premature release of chemotherapeutic agents such as doxorubicin in physiological conditions, but promote drug release once they are triggered in the acidified endosomal compartment. Importantly, the folate moieties are installed on the surface of polymersomes as protruding antennae by doping the polymersomes with folate-terminated block copolymers designed to have longer PEG segments. Thereby, the folate moieties are freed from concealment and steric effects exerted by the dense PEG corona. The cellular uptake of the FA-antennae polymersomes by tumor cells is significantly enhanced facilitated by the freely accessible folate antennae; however, the normal cells record a low level of cellular uptake due to the stealth property of the PEG corona. Overall, the excellent biocompatibility, controlled permeability, targeted internalization, as well as selective cytotoxicity of such polymersomes set up the basis for properly smart carrier for targeted drug delivery.
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Affiliation(s)
- Mohamed A Yassin
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069, Dresden, Germany; Organic Chemistry of Polymers, Technische Universität Dresden, Dresden, 01062, Germany
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17
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Lu Z, Zhang X, Li Z, Wu Z, Song J, Li C. Composite copolymer hybrid silver nanoparticles: preparation and characterization of antibacterial activity and cytotoxicity. Polym Chem 2015. [DOI: 10.1039/c4py00931b] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The AgNPs could adhere to the bacterial membrane through electrostatic force, then damage the bacterial membrane irreversibly and lead to bacterial apoptosis finally.
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Affiliation(s)
- Zhentan Lu
- Key Laboratory of Functional Polymer Materials Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Xinge Zhang
- Key Laboratory of Functional Polymer Materials Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Zhongyu Li
- Key Laboratory of Functional Polymer Materials Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Zhongming Wu
- Key Laboratory of Hormones and Development (Ministry of Health)
- Metabolic Diseases Hospital
- Tianjin Medical University
- Tianjin 300070
- China
| | - Jia Song
- Key Laboratory of Functional Polymer Materials Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Chaoxing Li
- Key Laboratory of Functional Polymer Materials Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
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18
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Lu Z, Zhang X, Zhao Y, Xue Y, Zhai T, Wu Z, Li C. BODIPY-based macromolecular photosensitizer with cation-enhanced antibacterial activity. Polym Chem 2015. [DOI: 10.1039/c4py00715h] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The macromolecular photosensitizer could bind and eliminate bacteria efficiently.
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Affiliation(s)
- Zhentan Lu
- Key Laboratory of Functional Polymer Materials Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Xinge Zhang
- Key Laboratory of Functional Polymer Materials Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Yu Zhao
- Key Laboratory of Functional Polymer Materials Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Yinan Xue
- Key Laboratory of Functional Polymer Materials Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Tingting Zhai
- Key Laboratory of Functional Polymer Materials Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Zhongming Wu
- Key Laboratory of Hormones and Development (Ministry of Health)
- Metabolic Diseases Hospital
- Tianjin Medical University
- Tianjin 300070
- China
| | - Chaoxing Li
- Key Laboratory of Functional Polymer Materials Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
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19
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Gunkel-Grabole G, Sigg S, Lomora M, Lörcher S, Palivan CG, Meier WP. Polymeric 3D nano-architectures for transport and delivery of therapeutically relevant biomacromolecules. Biomater Sci 2015. [DOI: 10.1039/c4bm00230j] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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20
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Polymersomes conjugated to 83-14 monoclonal antibodies: Invitro targeting of brain capillary endothelial cells. Eur J Pharm Biopharm 2014; 88:316-24. [DOI: 10.1016/j.ejpb.2014.05.021] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 05/22/2014] [Accepted: 05/26/2014] [Indexed: 12/28/2022]
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21
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Messager L, Gaitzsch J, Chierico L, Battaglia G. Novel aspects of encapsulation and delivery using polymersomes. Curr Opin Pharmacol 2014; 18:104-11. [DOI: 10.1016/j.coph.2014.09.017] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 09/17/2014] [Accepted: 09/21/2014] [Indexed: 02/05/2023]
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22
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Gräfe D, Gaitzsch J, Appelhans D, Voit B. Cross-linked polymersomes as nanoreactors for controlled and stabilized single and cascade enzymatic reactions. NANOSCALE 2014; 6:10752-61. [PMID: 25099948 DOI: 10.1039/c4nr02155j] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Polymeric vesicles or polymersomes are one of the supramolecular entities at the leading edge of synthetic biology. These small compartments have shown to be feasible candidates as nanoreactors, especially for enzymatic reactions. Once cross-linked and equipped with a pH sensitive material, the reaction can be switched off (pH 8) and on (pH 6) in accordance with the increased permeability of the polymersome membranes under acidic conditions. Thus cross-linked and pH sensitive polymersomes provide a basis for pH controlled enzymatic reactions where no integrated transmembrane protein is needed for regulating the uptake and release of educts and products in the polymersome lumen. This pH-tunable working tool was further used to investigate their use in sequential enzymatic reactions (glucose oxidase and myoglobin) where enzymes are loaded in one common polymersome or in two different polymersomes. Crossing membranes and overcoming the space distance between polymersomes were shown successfully, meaning that educts and products can be exchanged between enzyme compartments for successful enzymatic cascade reactions. Moreover the stabilizing effect of polymersomes is also observable by single enzymatic reactions as well as a sequence. This study is directed to establish robust and controllable polymersome nanoreactors for enzymatic reactions, describing a switch between an off (pH 8) and on (pH 6) state of polymersome membrane permeability with no transmembrane protein needed for transmembrane exchange.
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Affiliation(s)
- David Gräfe
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany.
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23
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Car A, Baumann P, Duskey JT, Chami M, Bruns N, Meier W. pH-responsive PDMS-b-PDMAEMA micelles for intracellular anticancer drug delivery. Biomacromolecules 2014; 15:3235-45. [PMID: 25068477 DOI: 10.1021/bm500919z] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A series of poly(dimethysiloxane)-b-poly(2-(dimethylamino)ethyl methacrylate) (PDMS-b-PDMAEMA) block copolymers were synthesized with atom transfer radical polymerization (ATRP). In aqueous solution the polymers self-assembled into micelles with diameters between 80 and 300 nm, with the ability to encapsulate DOX. The polymer with the shortest PDMAEMA block (5 units) displayed excellent cell viability, while micelles containing longer PDMAEMA block lengths (13 and 22 units) led to increased cytotoxicity. The carriers released DOX in response to a decrease in pH from 7.4 to 5.5. Confocal laser scanning microscopy (CLSM) revealed that nanoparticles were taken up by endocytosis into acidic cell compartments. Furthermore, DOX-loaded nanocarriers exhibited intracellular pH-response as changes in cell morphology and drug release were observed within 24 h.
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Affiliation(s)
- Anja Car
- Department of Chemistry, University of Basel , Klingelbergstrasse 80, 4056 Basel, Switzerland
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24
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Multifunctional polymersomes for cytosolic delivery of gemcitabine and doxorubicin to cancer cells. Biomaterials 2014; 35:6482-97. [PMID: 24797878 DOI: 10.1016/j.biomaterials.2014.04.026] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 04/08/2014] [Indexed: 11/20/2022]
Abstract
Although liposomes are widely used as carriers of drugs and imaging agents, they suffer from a lack of stability and the slow release of the encapsulated contents at the targeted site. Polymersomes (vesicles of amphiphilic polymers) are considerably more stable compared to liposomes; however, they also demonstrate a slow release for the encapsulated contents, limiting their efficacy as a drug-delivery tool. As a solution, we prepared and characterized echogenic polymersomes, which are programmed to release the encapsulated drugs rapidly when incubated with cytosolic concentrations of glutathione. These vesicles encapsulated air bubbles inside and efficiently reflected diagnostic-frequency ultrasound. Folate-targeted polymersomes showed an enhanced uptake by breast and pancreatic-cancer cells in a monolayer as well as in three-dimensional spheroid cultures. Polymersomes encapsulated with the anticancer drugs gemcitabine and doxorubicin showed significant cytotoxicity to these cells. With further improvements, these vesicles hold the promise to serve as multifunctional nanocarriers, offering a triggered release as well as diagnostic ultrasound imaging.
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25
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Zeng Z, Peng Z, Chen L, Chen Y. Facile fabrication of thermally responsive Pluronic F127-based nanocapsules for controlled release of doxorubicin hydrochloride. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3183-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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26
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Gaitzsch J, Appelhans D, Janke A, Strempel M, Schwille P, Voit B. Cross-linked and pH sensitive supported polymer bilayers from polymersomes - studies concerning thickness, rigidity and fluidity. SOFT MATTER 2014; 10:75-82. [PMID: 24651668 DOI: 10.1039/c3sm52016a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Polymersomes are at the leading edge of biomedical and nanoparticle research. In order to get closer insights into their mechanical properties, the bilayer forming them needs to be studied thoroughly. Here, we report on the bilayer formation, swelling behaviour, rigidity and fluidity of our membranes derived from pH sensitive and photo-cross-linkable polymersomes.
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Affiliation(s)
- Jens Gaitzsch
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany.
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27
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Thambi T, Deepagan VG, Ko H, Suh YD, Yi GR, Lee JY, Lee DS, Park JH. Biostable and bioreducible polymersomes for intracellular delivery of doxorubicin. Polym Chem 2014. [DOI: 10.1039/c4py00567h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To minimize the premature drug release of nanocarriers, we have developed chemically cross-linked bioreducible polymersomes (CLPMs) that can specifically release the drug inside cancer cells.
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Affiliation(s)
- Thavasyappan Thambi
- School of Chemical Engineering
- College of Engineering
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
| | - V. G. Deepagan
- School of Chemical Engineering
- College of Engineering
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
| | - Hyewon Ko
- Department of Health Sciences and Technology
- SAIHST
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
| | - Yung Doug Suh
- School of Chemical Engineering
- College of Engineering
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
- NanoBio Fusion Research Center
| | - Gi-Ra Yi
- School of Chemical Engineering
- College of Engineering
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
| | - Jun Young Lee
- School of Chemical Engineering
- College of Engineering
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
| | - Doo Sung Lee
- School of Chemical Engineering
- College of Engineering
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
| | - Jae Hyung Park
- School of Chemical Engineering
- College of Engineering
- Sungkyunkwan University
- Suwon 440-746, Republic of Korea
- Department of Health Sciences and Technology
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28
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Matini T, Francini N, Battocchio A, Spain SG, Mantovani G, Vicent MJ, Sanchis J, Gallon E, Mastrotto F, Salmaso S, Caliceti P, Alexander C. Synthesis and characterization of variable conformation pH responsive block co-polymers for nucleic acid delivery and targeted cell entry. Polym Chem 2014. [DOI: 10.1039/c3py00744h] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Zheng Y, Li G, Deng H, Su Y, Liu J, Zhu X. Temperature-induced fluorescence enhancement of GFP chromophore containing copolymers for detection of Bacillus thermophilus. Polym Chem 2014. [DOI: 10.1039/c3py01559a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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