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Zhang F, Yao Q, Niu Y, Chen X, Zhou H, Bai L, Kong Z, Li Y, Cheng H. In Situ Fabrication of Silver Nanoparticle-Decorated Polymeric Vesicles for Antibacterial Applications. ChemistryOpen 2024; 13:e202300223. [PMID: 38647351 PMCID: PMC11095202 DOI: 10.1002/open.202300223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 03/05/2024] [Indexed: 04/25/2024] Open
Abstract
Silver/polymeric vesicle composite nanoparticles with good antibacterial properties were fabricated in this study. Silver nanoparticles (AgNPs) were prepared in situ on cross-linked vesicle membranes through the reduction of silver nitrate (AgNO3) using polyvinylpyrrolidone (PVP) via coordination bonding between the Ag+ ions and the nitrogen atoms on the vesicles. X-ray diffraction (XRD), ultraviolet-visible spectroscopy (UV-vis), and transmission electron microscopy (TEM) analyses confirmed the formation of AgNPs on the vesicles. The antibacterial test demonstrated good antibacterial activity against both Gram-negative bacteria (Escherichia coli) and Gram-positive bacteria (Staphylococcus aureus) for the produced AgNP-decorated vesicles. The minimum inhibitory concentration (MIC) values of the AgNP-decorated vesicles for E. coli and S. aureus were 8.4 and 9.6 μg/mL, respectively. Cell viability analysis on the A549 cells indicated that the toxicity was low when the AgNP concentrations did not exceed the MIC values, and the wound healing test confirmed the good antibacterial properties of the AgNP-decorated vesicles.
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Affiliation(s)
- Fen Zhang
- Institute of Energy ResourcesHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Qian Yao
- Institute of Energy ResourcesHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Yanling Niu
- Institute of Energy ResourcesHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Xiaoqi Chen
- Institute of Energy ResourcesHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Haijun Zhou
- Institute of Energy ResourcesHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Lu Bai
- Institute of Energy ResourcesHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Zejuan Kong
- Institute of BiologyHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Yantao Li
- Institute of Energy ResourcesHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Hua Cheng
- Institute of BiologyHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
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Zhang F, Yao Q, Chen X, Zhou H, Zhou M, Li Y, Cheng H. In-depth study of anticancer drug diffusion through a cross-linked -pH-responsive polymeric vesicle membrane. Drug Deliv 2023; 30:2162626. [PMID: 36600638 PMCID: PMC9828689 DOI: 10.1080/10717544.2022.2162626] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Post-encapsulation and release of the anticancer drug doxorubicin hydrochloride (DOX·HCl) through cell-like transmission functions of polymeric vesicles were studied using cross-linked pH-responsive polymeric vesicles. The vesicles were fabricated for the first time via the redox-initiated reversible addition-fragmentation chain transfer dispersion polymerization in ethanol-water mixture, using 2-(diisopropylamino)ethyl methacrylate and glycidyl methacrylate, and the vesicle membrane was modified post-cross-linking by using ethylenediamine. A phase diagram was constructed for reproducible fabrication of the polymeric vesicles, and well-shaped vesicles were formed when the target degree of polymerization of the hydrophobic polymer chains was equal to or higher than 50 with solid content in the range of 10-30 wt%. The cross-linked vesicle membrane served as a gate enabling "open" and "closed" states in response to pH stimulation. Up to 50% drug loading efficiency and 39% drug loading content could be achieved, and in vitro release of the DOX-loaded vesicles in aqueous buffer solutions showed a much faster DOX release rate at pH 5.0 than at pH 6.5. The polymeric vesicles were of very low cytotoxicity to A549 cells up to the concentration of 2 mg/mL, and the IC50 of DOX-loaded vesicles were higher than that of the free DOX. The intracellular DOX release study indicated higher cellular uptake capability for DOX-loaded vesicles than that of free DOX.
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Affiliation(s)
- Fen Zhang
- Institute of Energy Resources, Hebei Academy of Sciences, Shijiazhuang, Hebei Province, China,CONTACT Fen Zhang ; Yantao Li Institute of Energy Resources, Hebei Academy of Sciences, Shijiazhuang, Hebei Province050081, China; Hua Cheng Institute of Biology, Hebei Academy of Sciences, Shijiazhuang, Hebei Province050081, China
| | - Qian Yao
- Institute of Energy Resources, Hebei Academy of Sciences, Shijiazhuang, Hebei Province, China
| | - Xiaoqi Chen
- Institute of Energy Resources, Hebei Academy of Sciences, Shijiazhuang, Hebei Province, China
| | - Haijun Zhou
- Institute of Energy Resources, Hebei Academy of Sciences, Shijiazhuang, Hebei Province, China
| | - Mengmeng Zhou
- Institute of Energy Resources, Hebei Academy of Sciences, Shijiazhuang, Hebei Province, China
| | - Yantao Li
- Institute of Energy Resources, Hebei Academy of Sciences, Shijiazhuang, Hebei Province, China,CONTACT Fen Zhang ; Yantao Li Institute of Energy Resources, Hebei Academy of Sciences, Shijiazhuang, Hebei Province050081, China; Hua Cheng Institute of Biology, Hebei Academy of Sciences, Shijiazhuang, Hebei Province050081, China
| | - Hua Cheng
- Institute of Biology, Hebei Academy of Sciences, Shijiazhuang, Hebei Province, China,CONTACT Fen Zhang ; Yantao Li Institute of Energy Resources, Hebei Academy of Sciences, Shijiazhuang, Hebei Province050081, China; Hua Cheng Institute of Biology, Hebei Academy of Sciences, Shijiazhuang, Hebei Province050081, China
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3
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Liu D, Yang S, Peng S, Chen Y, Zhang L, Tan J. Simultaneous Synthesis and Self-Assembly of Bottlebrush Block Copolymers at Room Temperature via Photoinitiated RAFT Dispersion Polymerization. Macromol Rapid Commun 2022; 43:e2100921. [PMID: 35212438 DOI: 10.1002/marc.202100921] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 02/04/2022] [Indexed: 11/10/2022]
Abstract
Bottlebrush polymers exhibiting unique properties have attracted considerable attention for applications in many research areas. Herein, we report the first simultaneous synthesis and self-assembly of bottlebrush block copolymers at room temperature via photoinitiated polymerization-induced self-assembly (photo-PISA) using multifunctional macromolecular chain transfer agents (macro-CTAs). Compare with linear block copolymers, the bottlebrush block copolymers could promote the formation of higher-order morphologies (e.g. vesicles) when targeting similar degrees of polymerization (DPs). Moreover, a higher polymerization rate was observed in the case of bottlebrush block copolymers. Gel permeation chromatography (GPC) analysis showed that good polymerization control was maintained when synthesizing bottlebrush block copolymers by photo-PISA. Finally, the obtained bottlebrush block copolymer vesicles were used as seeds for further chain extension and multicomponent nanoparticles with a sponge internal structure were formed. We expect this study will not only expand polymer architectures employed in PISA, but also provides a new strategy to synthesize polymer nanoparticles with unique structures. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Dongdong Liu
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, P. R. China
| | - Shuaiqi Yang
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, P. R. China
| | - Shaojie Peng
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, P. R. China
| | - Ying Chen
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou, 510006, P. R. China
| | - Li Zhang
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, P. R. China.,Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou, 510006, P. R. China
| | - Jianbo Tan
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, P. R. China.,Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou, 510006, P. R. China
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Rymaruk MJ, O'Brien CT, György C, Darmau B, Jennings J, Mykhaylyk OO, Armes SP. Small-Angle X-Ray Scattering Studies of Block Copolymer Nano-Objects: Formation of Ordered Phases in Concentrated Solution During Polymerization-Induced Self-Assembly. Angew Chem Int Ed Engl 2021; 60:12955-12963. [PMID: 33725372 PMCID: PMC8252599 DOI: 10.1002/anie.202101851] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/12/2021] [Indexed: 01/13/2023]
Abstract
We report that polymerization-induced self-assembly (PISA) can be used to prepare lyotropic phases comprising diblock copolymer nano-objects in non-polar media. RAFT dispersion polymerization of benzyl methacrylate (BzMA) at 90 °C using a trithiocarbonate-capped hydrogenated polybutadiene (PhBD) steric stabilizer block in n-dodecane produces either spheres or worms that exhibit long-range order at 40 % w/w solids. NMR studies enable calculation of instantaneous copolymer compositions for each phase during the BzMA polymerization. As the PBzMA chains grow longer when targeting PhBD80 -PBzMA40 , time-resolved small-angle X-ray scattering reveals intermediate body-centered cubic (BCC) and hexagonally close-packed (HCP) sphere phases prior to formation of a final hexagonal cylinder phase (HEX). The HEX phase is lost on serial dilution and the aligned cylinders eventually form disordered flexible worms. The HEX phase undergoes an order-disorder transition on heating to 150 °C and a pure HCP phase forms on cooling to 20 °C.
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Affiliation(s)
- Matthew J. Rymaruk
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
- Present address: SyngentaJealott's HillBracknellBerkshireRG42 6EYUK
| | - Cate T. O'Brien
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
| | - Csilla György
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
| | - Bastien Darmau
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
| | - James Jennings
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
| | | | - Steven P. Armes
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
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5
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Qiu L, Zhang H, Bick T, Martin J, Wendler P, Böker A, Glebe U, Xing C. Construction of Highly Ordered Glyco-Inside Nano-Assemblies through RAFT Dispersion Polymerization of Galactose-Decorated Monomer. Angew Chem Int Ed Engl 2021; 60:11098-11103. [PMID: 33565244 PMCID: PMC8252037 DOI: 10.1002/anie.202015692] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 01/31/2021] [Indexed: 01/15/2023]
Abstract
Glyco-assemblies derived from amphiphilic sugar-decorated block copolymers (ASBCs) have emerged prominently due to their wide application, for example, in biomedicine and as drug carriers. However, to efficiently construct these glyco-assemblies is still a challenge. Herein, we report an efficient technology for the synthesis of glyco-inside nano-assemblies by utilizing RAFT polymerization of a galactose-decorated methacrylate for polymerization-induced self-assembly (PISA). Using this approach, a series of highly ordered glyco-inside nano-assemblies containing intermediate morphologies were fabricated by adjusting the length of the hydrophobic glycoblock and the polymerization solids content. A specific morphology of complex vesicles was captured during the PISA process and the formation mechanism is explained by the morphology of its precursor and intermediate. Thus, this method establishes a powerful route to fabricate glyco-assemblies with tunable morphologies and variable sizes, which is significant to enable the large-scale fabrication and wide application of glyco-assemblies.
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Affiliation(s)
- Liang Qiu
- Key Laboratory of Hebei Province for Molecular BiophysicsInstitute of BiophysicsHebei University of TechnologyTianjin300401P. R. China
- Department of Life Science and BioprocessesFraunhofer Institute for Applied Polymer Research IAPGeiselbergstr. 6914476Potsdam-GolmGermany
| | - Haoran Zhang
- Key Laboratory of Hebei Province for Molecular BiophysicsInstitute of BiophysicsHebei University of TechnologyTianjin300401P. R. China
| | - Thomas Bick
- Department of BiochemistryUniversity of PotsdamKarl-Liebknecht-Str. 24–2514476Potsdam-GolmGermany
| | - Johannes Martin
- Department of Life Science and BioprocessesFraunhofer Institute for Applied Polymer Research IAPGeiselbergstr. 6914476Potsdam-GolmGermany
- Chair of Polymer Materials and Polymer TechnologiesInstitute of ChemistryUniversity of PotsdamKarl-Liebknecht-Str. 24–2514476Potsdam-GolmGermany
| | - Petra Wendler
- Department of BiochemistryUniversity of PotsdamKarl-Liebknecht-Str. 24–2514476Potsdam-GolmGermany
| | - Alexander Böker
- Department of Life Science and BioprocessesFraunhofer Institute for Applied Polymer Research IAPGeiselbergstr. 6914476Potsdam-GolmGermany
- Chair of Polymer Materials and Polymer TechnologiesInstitute of ChemistryUniversity of PotsdamKarl-Liebknecht-Str. 24–2514476Potsdam-GolmGermany
| | - Ulrich Glebe
- Department of Life Science and BioprocessesFraunhofer Institute for Applied Polymer Research IAPGeiselbergstr. 6914476Potsdam-GolmGermany
| | - Chengfen Xing
- Key Laboratory of Hebei Province for Molecular BiophysicsInstitute of BiophysicsHebei University of TechnologyTianjin300401P. R. China
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Huang J, Liu D, Chen Y, Zhang L, Tan J. Preparation of Block Copolymer Nano-Objects with Embedded β-Ketoester Functional Groups by Photoinitiated RAFT Dispersion Polymerization. Macromol Rapid Commun 2021; 42:e2000720. [PMID: 33538048 DOI: 10.1002/marc.202000720] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/21/2021] [Indexed: 01/27/2023]
Abstract
Herein, a photoinitiated reversible addition-fragmentation chain transfer (RAFT) dispersion polymerization of 2-(acetoacetoxy)ethyl methacrylate (AEMA) in ethanol/water at room temperature for in situ preparation of β-ketoester-functionalized block copolymer nano-objects is reported. AEMA is also copolymerized with isobornyl methacrylate (IBOMA) to improve the colloidal stability of PIBOMA-based block copolymer nano-objects prepared by photoinitiated RAFT dispersion polymerization at low temperatures. A series of P(IBOMA-stat-AEMA)-based block copolymer nano-objects are prepared by changing reaction parameters. Finally, lanthanide-doped block copolymer nano-objects with luminescent and magnetic properties are also prepared based on the complexation of various lanthanide ions with the β-ketoester group. It is expected that the current study will provide a facile platform for the in situ preparation of β-ketoester-functionalized block copolymer nano-objects with different morphologies for specific applications.
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Affiliation(s)
- Jiayuan Huang
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
| | - Dongdong Liu
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
| | - Ying Chen
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou, 510006, China
| | - Li Zhang
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China.,Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou, 510006, China
| | - Jianbo Tan
- Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China.,Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou, 510006, China
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Qiu L, Zhang H, Wang B, Zhan Y, Xing C, Pan CY. CO 2-Responsive Nano-Objects with Assembly-Related Aggregation-Induced Emission and Tunable Morphologies. ACS Appl Mater Interfaces 2020; 12:1348-1358. [PMID: 31815411 DOI: 10.1021/acsami.9b18792] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
CO2-responsive polymeric nano-objects with assembly-related aggregation-induced emission (AIE) are obtained via polymerization-induced self-assembly (PISA) of 2-(dimethylamino)ethyl methacrylate (DMAEMA), 2-(4-formylphenoxy)ethyl methacrylate (MAEBA), and 4-(1,2,2-triphenylvinyl)phenyl methacrylate (TPEMA). These nano-objects exhibit, depending on the feed of MAEBA, a morphology evolution process from spherical micelles to vesicles. Due to the presence of DMAEMA units, CO2 promotes morphology transformation of the nano-objects from spheres to a mixture of "jellyfish" and vesicles and vesicles to complex vesicles. Moreover, TPEMA endows the AIE feature to these nano-objects, offering a strategy to monitor the morphology evolution process in real time. Thus, this approach is significant for exploring the assembly mechanism of copolymer in polymerization-induced self-assembly and designing multistimuli-responsive polymeric nanomaterials with tunable morphologies and sizes.
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Affiliation(s)
| | | | | | | | | | - Cai-Yuan Pan
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei 230026 , Anhui , People's Republic of China
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Wang X, An Z. New Insights into RAFT Dispersion Polymerization-Induced Self-Assembly: From Monomer Library, Morphological Control, and Stability to Driving Forces. Macromol Rapid Commun 2018; 40:e1800325. [PMID: 29974537 DOI: 10.1002/marc.201800325] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/28/2018] [Indexed: 12/26/2022]
Abstract
Polymerization-induced self-assembly (PISA) has been established as an efficient, robust, and versatile approach to synthesize various block copolymer nano-objects with controlled morphologies, tunable dimensions, and diverse functions. The relatively high concentration and potential scalability makes it a promising technique for industrial production and practical applications of functional polymeric nanoparticles. This feature article outlines recent advances in PISA via reversible addition-fragmentation chain transfer dispersion polymerization. Considerable efforts to understand morphological control, broaden the monomer library, enhance morphological stability, and incorporate multiple driving forces in PISA syntheses are summarized herein. Finally, perspectives on the future of PISA research are discussed.
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Affiliation(s)
- Xiao Wang
- Institute of Nanochemistry and Nanobiology, College of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
| | - Zesheng An
- State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, P. R. China
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Zhang WJ, Hong CY, Pan CY. Artificially Smart Vesicles with Superior Structural Stability: Fabrication, Characterizations, and Transmembrane Traffic. ACS Appl Mater Interfaces 2017; 9:15086-15095. [PMID: 28418640 DOI: 10.1021/acsami.7b02966] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Intelligent vesicles are fabricated at up to 30% solid content via an approach of polymerization-induced self-assembly and reorganization (PISR). Upon irradiation with UV light (365 nm), light-triggered dimerization of the coumarin moieties anchored in the membrane leads to the membrane cross-linking of the vesicles, which endows the vesicles with superior structural stability. Due to the tertiary amine groups in the membrane, the vesicles go through a swelling/deswelling change upon switching the pH values. In acidic aqueous solution, the pores in the membrane of vesicles are opened, which is beneficial for transmembrane traffic. The pore size in the membrane of vesicles is in accordance with the extent of membrane cross-linking, which can be conveniently regulated by the irradiation time of UV light (365 nm). The size range of the substance for transmembrane traffic is effectively enlarged; even 15 nm gold nanoparticles can be postloaded into the vesicles with lower extents of the membrane cross-linking through the diffusion method. Although the pores in the vesicle membrane are opened in acidic aqueous solution, transmembrane traffic is inhibited for the electropositive substance because of electrostatic repulsion but is allowed for the electronegative substance. These reported vesicles herein may be the smartest artificial vesicles to date due to their multiple selective permeability.
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Affiliation(s)
- Wen-Jian Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Chun-Yan Hong
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Cai-Yuan Pan
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
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Qiu L, Xu CR, Zhong F, Hong CY, Pan CY. Fabrication of Functional Nano-objects through RAFT Dispersion Polymerization and Influences of Morphology on Drug Delivery. ACS Appl Mater Interfaces 2016; 8:18347-59. [PMID: 27399846 DOI: 10.1021/acsami.6b04693] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
To study the influence of self-assembled morphologies on drug delivery, four different nano-objects, spheres, nanorods, nanowires, and vesicles having aldehdye-based polymer as core, were successfully prepared via alcoholic RAFT dispersion polymerization of p-(methacryloxyethoxy)benzaldehyde (MAEBA) using poly((N,N'-dimethylamino)ethyl methacrylate) (PDMAEMA) as a macro chain transfer agent (macro-CTA) for the first time. The morphologies and sizes of the four nano-objects were characterized by TEM and DLS, and the spheres with average diameter (D) of 70 nm, the nanorods with D of 19 nm and length of 140 nm, and the vesicles with D of 137 nm were used in the subsequent cellular internalization, in vitro release, and intracellular release of the drug. The anticancer drug doxorubicin (DOX) was conjugated onto the core polymers of nano-objects through condensation reaction between aldehyde groups of the PMAEBA with primary amine groups in the DOX. Because the aromatic imine is stable under neutral conditions, but is decomposed in a weakly acidic solution, in vitro release of the DOX from the DOX-loaded nano-objects was investigated in the different acidic solutions. All of the block copolymer nano-objects show very low cytotoxicity to HeLa cells up to the concentration of 1.2 mg/mL, but the DOX-loaded nano-objects reveal different cell viability and their IC50s increase as the following order: nanorods-DOX < vesicles-DOX < spheres-DOX. The IC50 of nanowires-DOX is the biggest among the four nano-objects owing to their too large size to be internalized. Endocytosis tests demonstrate that the internalization of vesicles-DOX by the HeLa cells is faster than that of the nanorods-DOX, and the spheres-DOX are the slowest to internalize among the studied nano-objects. Relatively more nanorods localized in the acidic organelles of the HeLa cells lead to faster intracellular release of the DOX, so the IC50 of nanorods is lower than that of the vesicles-DOX.
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Affiliation(s)
- Liang Qiu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei 230026, Anhui, People's Republic of China
| | - Chao-Ran Xu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei 230026, Anhui, People's Republic of China
| | - Feng Zhong
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei 230026, Anhui, People's Republic of China
| | - Chun-Yan Hong
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei 230026, Anhui, People's Republic of China
| | - Cai-Yuan Pan
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei 230026, Anhui, People's Republic of China
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Song Z, Huang Y, Prasad V, Baumgartner R, Zhang S, Harris K, Katz JS, Cheng J. Preparation of Surfactant-Resistant Polymersomes with Ultrathick Membranes through RAFT Dispersion Polymerization. ACS Appl Mater Interfaces 2016; 8:17033-17037. [PMID: 27367934 DOI: 10.1021/acsami.6b05847] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Surfactant-resistant polymersomes have substantial potential to be used as delivery vehicles in industrial applications. Herein, we report the preparation of poly(ethylene oxide)-block-polystyrene copolymers with ultrahigh hydrophobic-block molecular weights through RAFT dispersion polymerization, which allows the polymerization-induced self-assembly into well-defined polymersomes with ultrathick membranes up to ∼47 nm. These ultrathick membranes significantly enhance the resistance against surfactant solubilization of the vesicles, improving the vesicles' potential for use in industrial encapsulations. Vesicle-encapsulated actives are well retained in the presence of up to 40 wt % of various anionic and nonionic surfactants, with less than 7% active leakage being observed after 30 days.
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Affiliation(s)
| | | | | | | | | | | | - Joshua S Katz
- Formulation Science, Corporate Research and Development, The Dow Chemical Company , Collegeville, Pennsylvania 19426, United States
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