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Javan Nikkhah S, Sammalkorpi M. Single core and multicore aggregates from a polymer mixture: A dissipative particle dynamics study. J Colloid Interface Sci 2023; 635:231-241. [PMID: 36587575 DOI: 10.1016/j.jcis.2022.12.119] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 12/04/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
HYPOTHESIS Multicore block copolymer aggregates correspond to self-assembly such that the polymer system spontaneously phase separates to multiple, droplet-like cores differing in the composition from the polymer surroundings. Such multiple core aggregates are highly useful capsules for different applications, e.g., drug transport, catalysis, controlled solvation, and chemical reactions platforms. We postulate that polymer system composition provides a direct means for designing polymer systems that self-assemble to such morphologies and controlling the assembly response. SIMULATIONS Using dissipative particle dynamics (DPD) simulations, we examine the self-assembly of a mixture of highly and weakly solvophobic homopolymers and an amphiphilic block copolymer in the presence of solvent. We map the multicore vs single core (core-shell particles) assembly response and aggregate structure in terms of block copolymer concentration, polymer component ratios, and chain length of the weakly solvophobic homopolymer. FINDINGS For fixed components and polymer chemistries, the amount of block copolymer is the key to controlling single core vs multicore aggregation. We find a polymer system dependent critical copolymer concentration for the multicore aggregation and that a minimum level of incompatibility between the solvent and the weakly solvophobic component is required for multicore assembly. We discuss the implications for polymer system design for multicore assemblies. In summary, the study presents guidelines to produce multicore aggregates and to tune the assembly from multicore aggregation to single core core-shell particles.
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Affiliation(s)
- Sousa Javan Nikkhah
- Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, P.O. Box 16100, FI-00076 Aalto, Finland; Department of Physics, Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland; Department of Chemical Sciences, Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland.
| | - Maria Sammalkorpi
- Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, P.O. Box 16100, FI-00076 Aalto, Finland; Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16100, FI-00076 Aalto, Finland; Academy of Finland Center of Excellence in Life-Inspired Hybrid Materials (LIBER), Aalto University, P.O. Box 16100, FI-00076 Aalto, Finland.
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2
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Al-Jabri M, Rodgers T. The effect of changing the molecular structure of the surfactant on the dissolution of lamellar phases. J Colloid Interface Sci 2023; 643:9-16. [PMID: 37044016 DOI: 10.1016/j.jcis.2023.03.205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 03/26/2023] [Accepted: 03/29/2023] [Indexed: 04/08/2023]
Abstract
Dissolution processes of surfactants, especially when in the lamellar phase, into water are important for product formulation. Understanding this process at a molecular level will help to enhance product design and control surfactant processes. The main goal of this study is to examine the effect of different lengths of surfactants and the hydrophobic to hydrophilic ratio on the dissolution process of surfactants. To achieve this goal dissipative particle dynamic (DPD) simulations were used. Lamellar equilibrium simulations were carried out for different surfactant chain lengths at 80 vol% with water. The surfactant chains were each run in a simulation box of dimensions 20 × 20 × 20 until equilibrium was reached. The lamellar phase formed for all different surfactant chain lengths and, after the initial equilibrium the surfactant systems were then simulated with a water box for dissolution. The dissolution process was tracked by visual analysis, local concentration analysis, micelle size, and a zonal model to calculate the diffusion parameter. Results show that as the surfactant chain length increased by adding more of the hydrophobic beads, the dissolution process slowed down. Increasing the hydrophilic part of the surfactant speeds up the dissolution process, but the effect of adding more of the hydrophobic part is greater than the effect of adding more of the hydrophilic part on the dissolution process.
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Affiliation(s)
- Mitha Al-Jabri
- Department of Engineering, College of Engineering and Technology, University of Technology and Applied Sciences, Suhar, Oman; Department of Chemical Engineering, The University of Manchester, M13 9PL, United Kingdom.
| | - Thomas Rodgers
- Department of Chemical Engineering, The University of Manchester, M13 9PL, United Kingdom
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3
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Self-assembly and drug release mechanisms of mechano-responsive and antibacterial F127-Rif hydrogels. Macromol Res 2023. [DOI: 10.1007/s13233-023-00126-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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4
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Agha A, Waheed W, Stiharu I, Nerguizian V, Destgeer G, Abu-Nada E, Alazzam A. A review on microfluidic-assisted nanoparticle synthesis, and their applications using multiscale simulation methods. NANOSCALE RESEARCH LETTERS 2023; 18:18. [PMID: 36800044 PMCID: PMC9936499 DOI: 10.1186/s11671-023-03792-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 02/07/2023] [Indexed: 05/24/2023]
Abstract
Recent years have witnessed an increased interest in the development of nanoparticles (NPs) owing to their potential use in a wide variety of biomedical applications, including drug delivery, imaging agents, gene therapy, and vaccines, where recently, lipid nanoparticle mRNA-based vaccines were developed to prevent SARS-CoV-2 causing COVID-19. NPs typically fall into two broad categories: organic and inorganic. Organic NPs mainly include lipid-based and polymer-based nanoparticles, such as liposomes, solid lipid nanoparticles, polymersomes, dendrimers, and polymer micelles. Gold and silver NPs, iron oxide NPs, quantum dots, and carbon and silica-based nanomaterials make up the bulk of the inorganic NPs. These NPs are prepared using a variety of top-down and bottom-up approaches. Microfluidics provide an attractive synthesis alternative and is advantageous compared to the conventional bulk methods. The microfluidic mixing-based production methods offer better control in achieving the desired size, morphology, shape, size distribution, and surface properties of the synthesized NPs. The technology also exhibits excellent process repeatability, fast handling, less sample usage, and yields greater encapsulation efficiencies. In this article, we provide a comprehensive review of the microfluidic-based passive and active mixing techniques for NP synthesis, and their latest developments. Additionally, a summary of microfluidic devices used for NP production is presented. Nonetheless, despite significant advancements in the experimental procedures, complete details of a nanoparticle-based system cannot be deduced from the experiments alone, and thus, multiscale computer simulations are utilized to perform systematic investigations. The work also details the most common multiscale simulation methods and their advancements in unveiling critical mechanisms involved in nanoparticle synthesis and the interaction of nanoparticles with other entities, especially in biomedical and therapeutic systems. Finally, an analysis is provided on the challenges in microfluidics related to nanoparticle synthesis and applications, and the future perspectives, such as large-scale NP synthesis, and hybrid formulations and devices.
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Affiliation(s)
- Abdulrahman Agha
- Department of Mechanical Engineering, Khalifa University, Abu Dhabi, UAE
| | - Waqas Waheed
- Department of Mechanical Engineering, Khalifa University, Abu Dhabi, UAE
- System on Chip Center, Khalifa University, Abu Dhabi, UAE
| | | | | | - Ghulam Destgeer
- Department of Electrical Engineering, School of Computation, Information and Technology, Technical University of Munich, Munich, Germany
| | - Eiyad Abu-Nada
- Department of Mechanical Engineering, Khalifa University, Abu Dhabi, UAE
| | - Anas Alazzam
- Department of Mechanical Engineering, Khalifa University, Abu Dhabi, UAE.
- System on Chip Center, Khalifa University, Abu Dhabi, UAE.
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5
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Hassan RH, Gad HA, El-Din SB, Shaker DS, Ishak RA. Chitosan nanoparticles for intranasal delivery of olmesartan medoxomil: Pharmacokinetic and pharmacodynamic perspectives. Int J Pharm 2022; 628:122278. [DOI: 10.1016/j.ijpharm.2022.122278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 09/10/2022] [Accepted: 10/06/2022] [Indexed: 10/31/2022]
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6
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Yang Z, Zhao H, Wang D, Yin L, Cai K, Lin Z, Chen T, Yang C. DPD simulations on mixed polymeric DOX-loaded micelles assembled from PCL-SS-PPEGMA/PDEA-PPEGMA and their dual pH/reduction-responsive release. Phys Chem Chem Phys 2021; 23:19011-19021. [PMID: 34612439 DOI: 10.1039/d1cp02750f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The design of mixed polymeric micelles by a combination of two or more dissimilar polymers is a potential strategy to achieve multiple stimuli-response for anti-cancer drug delivery. However, their drug loading co-micellization behavior and multiple stimuli-responsive drug release mechanism have been poorly understood at the mesoscopic level, especially in the system that involves reduction-response due to the difficulty of simulation on the cleavage of chemical bonds. In this work, the co-micellization behavior, drug distribution regularities and dual pH/reduction-responsive drug release process of mixed micelles formed by disulfide-linked polycaprolactone-b-polyethylene glycol methyl ether methacrylate (PCL-SS-PPEGMA) and poly(ethylene glycol) methyl ether-b-poly(N,N-diethylamino ethyl methacrylate) (PDEA-PPEGMA) were studied by dissipative particle dynamics (DPD) mesoscopic simulations. A dedicated bond-breaking script was employed to accomplish the disulfide bond-breaking simulations. The results showed that PCL55-SS-PPEGMA10 and PDEA34-PPEGMA11 could be well mixed to form superior DOX-loaded micelles with good drug-loading capacity and drug-controlled release performance. To prepare the DOX-loaded micelles with optimized properties, the simulation results suggested the feed ratio of DOX:PCL55-SS-PPEGMA10:PDEA34-PPEGMA11 set to 3:4:4. Compared with the two single stimuli-response, the dual pH/reduction-response process perfectly combined both pH-response and reduction-response together, providing a higher release rate of DOX. Therefore, this study provides theoretical guidance aimed at the property optimization and micellar structure design of the dual pH/reduction-responsive mixed micelles.
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Affiliation(s)
- Zexiong Yang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, P. R. China.
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7
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Ramakanth I, Kolenčík M, Rao MS, Sunil BR, Vijayasree U, Durgababu G, Devi SA, Šebesta M, Siva T. Tuning the Morphology and State of Aggregation of Fullerene C60 using Non-ionic Surfactants. COLLOID JOURNAL 2021. [DOI: 10.1134/s1061933x21040086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Kaur I, Goyal D, Agnihotri S. Formulation of cartap hydrochloride crosslinked chitosan tripolyphosphate nanospheres and its characterization. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-021-04866-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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9
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Scacchi A, Sammalkorpi M, Ala-Nissila T. Self-assembly of binary solutions to complex structures. J Chem Phys 2021; 155:014904. [PMID: 34241377 DOI: 10.1063/5.0053365] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Self-assembly in natural and synthetic molecular systems can create complex aggregates or materials whose properties and functionalities rise from their internal structure and molecular arrangement. The key microscopic features that control such assemblies remain poorly understood, nevertheless. Using classical density functional theory, we demonstrate how the intrinsic length scales and their interplay in terms of interspecies molecular interactions can be used to tune soft matter self-assembly. We apply our strategy to two different soft binary mixtures to create guidelines for tuning intermolecular interactions that lead to transitions from a fully miscible, liquid-like uniform state to formation of simple and core-shell aggregates and mixed aggregate structures. Furthermore, we demonstrate how the interspecies interactions and system composition can be used to control concentration gradients of component species within these assemblies. The insight generated by this work contributes toward understanding and controlling soft multi-component self-assembly systems. Additionally, our results aid in understanding complex biological assemblies and their function and provide tools to engineer molecular interactions in order to control polymeric and protein-based materials, pharmaceutical formulations, and nanoparticle assemblies.
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Affiliation(s)
- Alberto Scacchi
- Department of Chemistry and Materials Science, Aalto University, P.O. Box 16100, FI-00076 Aalto, Finland
| | - Maria Sammalkorpi
- Department of Chemistry and Materials Science, Aalto University, P.O. Box 16100, FI-00076 Aalto, Finland
| | - Tapio Ala-Nissila
- Quantum Technology Finland Center of Excellence and Department of Applied Physics, Aalto University, P.O. Box 11000, FI-00076 Aalto, Finland
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10
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Javan Nikkhah S, Turunen E, Lepo A, Ala-Nissila T, Sammalkorpi M. Multicore Assemblies from Three-Component Linear Homo-Copolymer Systems: A Coarse-Grained Modeling Study. Polymers (Basel) 2021; 13:polym13132193. [PMID: 34209428 PMCID: PMC8272115 DOI: 10.3390/polym13132193] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/22/2021] [Accepted: 06/26/2021] [Indexed: 01/03/2023] Open
Abstract
Multicore polymer micelles and aggregates are assemblies that contain several cores. The dual-length-scale compartmentalized solvophobic–solvophilic molecular environment makes them useful for, e.g., advanced drug delivery, high-precision synthesis platforms, confined catalysis, and sensor device applications. However, designing and regulating polymer systems that self-assemble to such morphologies remains a challenge. Using dissipative particle dynamics (DPD) simulations, we demonstrate how simple, three-component linear polymer systems consisting of free solvophilic and solvophobic homopolymers, and di-block copolymers, can self-assemble in solution to form well-defined multicore assemblies. We examine the polymer property range over which multicore assemblies can be expected and how the assemblies can be tuned both in terms of their morphology and structure. For a fixed degree of polymerization, a certain level of hydrophobicity is required for the solvophobic component to lead to formation of multicore assemblies. Additionally, the transition from single-core to multicore requires a relatively high solvophobicity difference between the solvophilic and solvophobic polymer components. Furthermore, if the solvophilic polymer is replaced by a solvophobic species, well-defined multicore–multicompartment aggregates can be obtained. The findings provide guidelines for multicore assemblies’ formation from simple three-component systems and how to control polymer particle morphology and structure.
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Affiliation(s)
- Sousa Javan Nikkhah
- Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, P.O. Box 16100, FI-00076 Aalto, Finland
- Department of Physics, Bernal Institute, University of Limerick, V94T9PX Limerick, Ireland
- Correspondence: (S.J.N.); (M.S.)
| | - Elsi Turunen
- R&D and Technology, Kemira Oyj, P.O. Box 44, FI-02271 Espoo, Finland; (E.T.); (A.L.)
| | - Anneli Lepo
- R&D and Technology, Kemira Oyj, P.O. Box 44, FI-02271 Espoo, Finland; (E.T.); (A.L.)
| | - Tapio Ala-Nissila
- QTF Centre of Excellence, Department of Applied Physics, Aalto University, FI-00076 Aalto, Finland;
- Centre for Interdisciplinary Mathematical Modelling and Department of Mathematical Sciences, Loughborough University, Loughborough, Leicestershire LE11 3TU, UK
| | - Maria Sammalkorpi
- Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, P.O. Box 16100, FI-00076 Aalto, Finland
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16100, FI-00076 Aalto, Finland
- Correspondence: (S.J.N.); (M.S.)
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11
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Yang C, Yin L, Yuan C, Liu W, Guo J, Shuttleworth PS, Yue H, Lin W. DPD simulations and experimental study on reduction-sensitive polymeric micelles self-assembled from PCL-SS-PPEGMA for doxorubicin controlled release. Colloids Surf B Biointerfaces 2021; 204:111797. [PMID: 33957490 DOI: 10.1016/j.colsurfb.2021.111797] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 03/24/2021] [Accepted: 04/24/2021] [Indexed: 12/25/2022]
Abstract
Delivery of anticancer drugs by amphiphilic polymeric micelles with disulfide bonds as the reduction-responsive groups has potential application in the field of drug-controlled release. In this study, three disulfide-linked polycaprolactone-b-polyethylene glycol methyl ether methacrylate (PCL-SS-PPEGMA) were synthesized and confirmed by 1H NMR and GPC, and then used for doxorubicin (DOX) delivery. The CMC values of the three PCL-SS-PPEGMA micelles were low (0.71-4.56 mg/L), indicative of the good stability of micelles in aqueous solution. The drug loading content (LC) and encapsulation efficiency (EE), together with the DOX accelerated release profiles were determined, with good drug loading capacity and well drug-controlled release performance. And to explore the mesoscopic behavior of reduction-responsive drug-loaded polymeric micelles, by using a dedicated disulfide bond-breaking model and script, dissipative particle dynamics (DPD) simulations were carried out on the three PCL-SS-PPEGMA polymers. Their self-assembled behavior, formation of DOX-loaded micelles, the disulfide bond-breaking process, as well as the DOX reduction-responsive release process were simulated and assessed. Comparing the DPD simulation results with the experimental data, we found that they were in good agreement, effectively demonstrating that the DPD simulation method developed can provide a practical mesoscopic approach for the reduction-responsive drug-loaded polymeric micelles that involved the cleavage of dynamic covalent bonds.
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Affiliation(s)
- Chufen Yang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, PR China
| | - Li Yin
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, PR China
| | - Cong Yuan
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, PR China
| | - Wenyao Liu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, PR China
| | - Jianwei Guo
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, PR China
| | - Peter S Shuttleworth
- Departamento de Física de Polímeros, Elastómeros y Aplicaciones Energéticas, Instituto de Ciencia y Tecnología de Polímeros, CSIC, c/Juan de la Cierva, 3, Madrid, 28006, Spain
| | - Hangbo Yue
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, PR China.
| | - Wenjing Lin
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, PR China.
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12
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Fan T, Chen L, Xia X, Wu Y, Zhang J, Yin K, Liu F, Yan Z. Dissipative Particle Dynamics Quantitative Simulation of the Formation Mechanism and Emulsification Driving Force of Deep Eutectic Solvent-Based Surfactant-Free and Water-Free Microemulsion. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c06193] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Taotao Fan
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Li Chen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiaomeng Xia
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yuehang Wu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jianwei Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - KangLing Yin
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Feng Liu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zongcheng Yan
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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13
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Roozbehi S, Dadashzadeh S, Sajedi RH. An enzyme-mediated controlled release system for curcumin based on cyclodextrin/cyclodextrin degrading enzyme. Enzyme Microb Technol 2020; 144:109727. [PMID: 33541570 DOI: 10.1016/j.enzmictec.2020.109727] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 12/05/2020] [Accepted: 12/14/2020] [Indexed: 12/28/2022]
Abstract
In this study, an enzyme-triggered system based on β-cyclodextrin (β-CD) has been developed to achieve controlled release of hydrophobic drugs in the presence of maltogenic amylase (MAase). The inclusion complex formation of curcumin (CUR), as a model anticancer compound, with β-CD was characterized by fluorescence and Fourier transform infrared (FTIR) spectroscopy. CUR was loaded into β-CD with an encapsulation efficiency of approximately 30 %. The in vitro profiles of CUR release from β-CD showed that 100 % of the drug was released after one hour incubation in the presence of MAase with cyclodextrin degrading activity. Fluorescence microscopy images indicate a significantly greater cellular uptake of CUR using β-CD-CUR/MAase system compared to β-CD-CUR inclusion complex without MAase. The β-CD-CUR/MAase system exhibited lower IC50 values and greater anti-proliferative effects in comparison with free CUR and β-CD-CUR in MCF-7 and Huh-7 cancer cells. The results from fluorescence microscopy and flow cytometric assay using the acridine orange/ethidium bromide and Annexin V-PE/7-AAD staining suggest that the β-CD-CUR/MAase system exhibited higher cytotoxic and apoptotic effects on cancer cells compared to other formulations. This triggered release of CUR in the presence of MAase is owing to the β-CD degradation by MAase resulting ring opening and chain scission in β-CD. We demonstrate that this enzyme-mediated controlled release system has a potential application for controlled release of poorly water-soluble drugs or hydrophobic compounds such as CUR.
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Affiliation(s)
- Sahar Roozbehi
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran 14115-154, Iran
| | - Simin Dadashzadeh
- Department of Pharmaceutics and Nanotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Vali-e-asr Ave., Niayesh Junction, PO Box: 14155-6153, Tehran, Iran
| | - Reza H Sajedi
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran 14115-154, Iran.
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Raya RK, Štěpánek M, Limpouchová Z, Procházka K, Svoboda M, Lísal M, Pavlova E, Skandalis A, Pispas S. Onion Micelles with an Interpolyelectrolyte Complex Middle Layer: Experimental Motivation and Computer Study. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00560] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Rahul Kumar Raya
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 12840 Prague 2, Czech Republic
| | - Miroslav Štěpánek
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 12840 Prague 2, Czech Republic
| | - Zuzana Limpouchová
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 12840 Prague 2, Czech Republic
| | - Karel Procházka
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 12840 Prague 2, Czech Republic
| | - Martin Svoboda
- Department of Physics, Faculty of Science, J. E. Purkinje University, České mládeže 8, 400 96 Ústí n. Lab., Czech Republic
- Department of Molecular and Mesoscopic Modelling, Institute of Chemical Process Fundamentals of the CAS, Rozvojová 135/1, 165 02 Prague 6, Suchdol, Czech Republic
| | - Martin Lísal
- Department of Physics, Faculty of Science, J. E. Purkinje University, České mládeže 8, 400 96 Ústí n. Lab., Czech Republic
- Department of Molecular and Mesoscopic Modelling, Institute of Chemical Process Fundamentals of the CAS, Rozvojová 135/1, 165 02 Prague 6, Suchdol, Czech Republic
| | - Ewa Pavlova
- Department of Polymer Morphology, Institute of Macromolecular Chemistry of the CAS, Heyrovský Square 2, 160 00 Prague 6, Czech Republic
| | - Athanasios Skandalis
- Theoretical & Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Stergios Pispas
- Theoretical & Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
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15
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Zhang W, Jamal R, Zhang R, Yu Z, Yan Y, Liu Y, Ge Y, Abdiryim T. Self-assembly of pendant functional groups grafted PEDOT as paracetamol detection material. Phys Chem Chem Phys 2020; 22:3592-3603. [PMID: 31995070 DOI: 10.1039/c9cp05759e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In this paper, pendant functional group grafted EDOTs, such as EDOTCH2NH2, EDOTCH2OH and EDOTCH2SH, were selected as monomers for the preparation of their respective polymers via a common chemical oxidative polymerization method in the absence of CTAB by varying the [monomer]/[oxidant] ratios. The self-assembly mechanism of the polymers was systematically studied by discussing the hydrogen bonding effect, acidity and electron-donating ability, as well as the chain initiation and chain growth of the chemically oxidated polymerized monomers. These functional group grafted PEDOTs were applied to the electrochemical determination of paracetamol (PAR) to further investigate the effect of the pendant functional groups (-SH, -OH, -NH2) on the electrochemical sensing behaviour of the polymers. The results indicated that the hydrogen bonding effect of the pendant functional groups was vital to the self-assembly of the polymer chains, and the PEDOTs with -OH and -SH groups had a tendency to self-assemble into a spherical structure, while the PEDOT with an -NH2 group exhibited a fibrous structure. The electrochemical response of PEDOTs with functional groups was better than that that of PEDOT alone, and the highest electrochemical response was observed in PEDOT with an -SH group ([monomer]/[oxidant] = 1 : 8).
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Affiliation(s)
- Wenli Zhang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Xinjiang University, Urumqi, 830046, P. R. China.
| | - Ruxangul Jamal
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Xinjiang University, Urumqi, 830046, P. R. China.
| | - Ruanye Zhang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Xinjiang University, Urumqi, 830046, P. R. China.
| | - Zongna Yu
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Xinjiang University, Urumqi, 830046, P. R. China.
| | - Yinqiang Yan
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Xinjiang University, Urumqi, 830046, P. R. China.
| | - Yingcheng Liu
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Xinjiang University, Urumqi, 830046, P. R. China.
| | - Yi Ge
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Xinjiang University, Urumqi, 830046, P. R. China.
| | - Tursun Abdiryim
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, Xinjiang University, Urumqi, 830046, P. R. China.
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16
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Zhang J, Chen L, Wang A, Yan Z. Dissipative Particle Dynamics Simulation of Ionic Liquid-Based Microemulsion: Quantitative Properties and Emulsification Mechanism. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b05660] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jianwei Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Li Chen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Aili Wang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
- School of Chemistry and Material Science, Ludong University, Yantai 264025, China
| | - Zongcheng Yan
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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17
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Yang C, Yuan C, Liu W, Guo J, Feng D, Yin X, Lin W, Shuttleworth PS, Yue H. DPD studies on mixed micelles self-assembled from MPEG-PDEAEMA and MPEG-PCL for controlled doxorubicin release. Colloids Surf B Biointerfaces 2019; 178:56-65. [DOI: 10.1016/j.colsurfb.2019.02.043] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 02/19/2019] [Accepted: 02/20/2019] [Indexed: 12/26/2022]
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18
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Zhang R, Wen LY, Wu WS, Yuan XZ, Zhang LJ. Quantitative Structure-Property Relationship for pH-Triggered Drug Release Performance of Acid-Responsive Four/Six-Arms Star Polymeric Micelles. Pharm Res 2018; 36:20. [PMID: 30511187 DOI: 10.1007/s11095-018-2549-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 11/25/2018] [Indexed: 11/29/2022]
Abstract
PURPOSE The pH-responsive copolymer micelles are widely used as carriers in drug delivery system, but there are few micro-level mechanistically explorations on the pH-triggered drug release. Here we elucidate the relationship between drug release behavior of four/six-arms star copolymer micelles and the copolymer structures. METHOD The net cumulative drug release percentage (En) was taken as the dependent variables, block unit autocorrelation descriptors as independent variables. The quantitative structure-property relationship models of drug release from block copolymers were developed at pH 7.4 and 5.0 of two periods (stage I: 0~12 h, stage II: 12~96 h). RESULTS The models built are of good fitting ability, internal predictive ability, stability and statistically significance. Drug diffusion is mainly influenced by the intra-block force, and micellar erosion by inter-block force. At pH 5.0, lowest unoccupied molecular orbital energy of copolymer unit is the main factor influencing the En. Stage I of drug release is affected by hydrophobic property and stage II by regional polar of copolymer molecules. CONCLUSION The models present good performance, factors affecting drug release behavior at different pH conditions can offer guidance for the design of copolymer structures to control the drug release behavior of micelles in a targeted and quantitatively way.
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Affiliation(s)
- Ran Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510000, People's Republic of China
| | - Li-Yang Wen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510000, People's Republic of China
| | - Wen-Sheng Wu
- School of Chemistry and Chemical Engineering, Zhaoqing University, Zhaoqing, 526000, People's Republic of China
| | - Xiao-Zhe Yuan
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510000, People's Republic of China
| | - Li-Juan Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510000, People's Republic of China.
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19
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Hu C, Liu S, Fang S, Xiang W, Duan M. Dissipative particle dynamics investigation of demulsification process and mechanism of comb-like block polyether. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4439] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Cun Hu
- School of Chemistry and Chemical Engineering; Southwest Petroleum University; Chengdu Sichuan 610500 China
| | - Shuai Liu
- School of Chemistry and Chemical Engineering; Southwest Petroleum University; Chengdu Sichuan 610500 China
| | - ShenWen Fang
- School of Chemistry and Chemical Engineering; Southwest Petroleum University; Chengdu Sichuan 610500 China
| | - WenJun Xiang
- School of Chemistry and Chemical Engineering; Sichuan University of Arts and Science; Dazhou Sichuan 635000 China
| | - Ming Duan
- School of Chemistry and Chemical Engineering; Southwest Petroleum University; Chengdu Sichuan 610500 China
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20
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Patra A, Satpathy S, Shenoy AK, Bush JA, Kazi M, Hussain MD. Formulation and evaluation of mixed polymeric micelles of quercetin for treatment of breast, ovarian, and multidrug resistant cancers. Int J Nanomedicine 2018; 13:2869-2881. [PMID: 29844670 PMCID: PMC5961470 DOI: 10.2147/ijn.s153094] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Background Quercetin (QCT), a naturally occurring flavonoid has a wide array of pharmacological properties such as anticancer, antioxidant and anti-inflammatory activities. QCT has low solubility in water and poor bioavailability, which limited its use as a therapeutic molecule. Polymeric micelles (PMs) is a novel drug delivery system having characteristics like smaller particle size, higher drug loading, sustained drug release, high stability, increased cellular uptake and improved therapeutic potential. In the present study, we have formulated and characterized mixed PMs (MPMs) containing QCT for increasing its anticancer potential. Methods The MPMs were prepared by thin film hydration method, and their physicochemical properties were characterized. The in vitro anticancer activity of the MPMs were tested in breast (MCF-7 and MDA-MB-231, epithelial and metastatic cancer cell lines, respectively), and ovarian (SKOV-3 and NCI/ADR, epithelial and multi-drug resistant cell lines, respectively) cancer. Results The optimal MPM formulations were obtained from Pluronic polymers, P123 and P407 with molar ratio of 7:3 (A16); and P123, P407 and TPGS in the molar ratio of 7:2:1 (A22). The size of the particles before lyophilization (24.83±0.44 nm) and after lyophilisation (37.10±4.23 nm), drug loading (8.75±0.41%), and encapsulation efficiency (87.48±4.15%) for formulation A16 were determined. For formulation A22, the particle size before lyophilization, after lyophilization, drug loading and encapsulation efficiency were 26.37±2.19 nm, 45.88±13.80 nm, 9.01±0.11% and 90.07±1.09%, respectively. The MPMs exhibited sustained release of QCT compared to free QCT as demonstrated from in vitro release experiments. The solubility of QCT was markedly improved compared to pure QCT. The MPMs were highly stable in aqueous media as demonstrated by their low critical micelle concentration. The concentration which inhibited 50% growth (IC50) values of both micellar preparations in all the cancer cell lines were significantly less compared to free QCT. Conclusion Both the MPMs containing QCT could be used for effective delivery to different type of cancer and may be considered for further development.
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Affiliation(s)
- Arjun Patra
- College of Pharmacy, Department of Pharmaceutical and Biomedical Sciences, California Health Sciences University, Clovis, CA, USA.,Institute of Pharmacy, Guru Ghasidas Vishwavidyalaya, Bilaspur (C.G.), India
| | - Swaha Satpathy
- College of Pharmacy, Department of Pharmaceutical and Biomedical Sciences, California Health Sciences University, Clovis, CA, USA.,Institute of Pharmacy, Guru Ghasidas Vishwavidyalaya, Bilaspur (C.G.), India
| | - Anitha K Shenoy
- College of Pharmacy, Department of Pharmaceutical and Biomedical Sciences, California Health Sciences University, Clovis, CA, USA
| | - Jason A Bush
- Department of Biology, California State University, Fresno, CA, USA
| | - Mohsin Kazi
- Kayyali Chair for Pharmaceutical Industries, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Muhammad Delwar Hussain
- College of Pharmacy, Department of Pharmaceutical and Biomedical Sciences, California Health Sciences University, Clovis, CA, USA
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21
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Yu T, Wang J, Jiang W, Zhang Z, Zhu Y, Tang Y, Wang Z. The Dissociation Mechanism of Poly-α-methylstyrene (PAMS) Dimers Induced by Spin Polarization. ChemistrySelect 2018. [DOI: 10.1002/slct.201702671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Tianrong Yu
- Institute of Atomic and Molecular Physics; Jilin University; Changchun 130012 China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy; Jilin University; Changchun 130012 China
| | - Jia Wang
- Institute of Atomic and Molecular Physics; Jilin University; Changchun 130012 China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy; Jilin University; Changchun 130012 China
| | - Wanrun Jiang
- Institute of Atomic and Molecular Physics; Jilin University; Changchun 130012 China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy; Jilin University; Changchun 130012 China
| | - Zhanwen Zhang
- China Academy of Engineering Physics; Mianyang 621900 China
| | - Yu Zhu
- Institute of Atomic and Molecular Physics; Jilin University; Changchun 130012 China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy; Jilin University; Changchun 130012 China
| | - Yongjian Tang
- China Academy of Engineering Physics; Mianyang 621900 China
| | - Zhigang Wang
- Institute of Atomic and Molecular Physics; Jilin University; Changchun 130012 China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy; Jilin University; Changchun 130012 China
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22
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Rovigatti L, Gnan N, Zaccarelli E. Internal structure and swelling behaviour of in silico microgel particles. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:044001. [PMID: 29231178 PMCID: PMC5912502 DOI: 10.1088/1361-648x/aaa0f4] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Microgels are soft colloids that, by virtue of their polymeric nature, can react to external stimuli such as temperature or pH by changing their size. The resulting swelling/deswelling transition can be exploited in fundamental research as well as for many diverse practical applications, ranging from art restoration to medicine. Such an extraordinary versatility stems from the complex internal structure of the individual microgels, each of which is a crosslinked polymer network. Here we employ a recently-introduced computational method to generate realistic microgel configurations and look at their structural properties, both in real and Fourier space, for several temperatures across the volume phase transition as a function of the crosslinker concentration and of the confining radius employed during the 'in-silico' synthesis. We find that the chain-length distribution of the resulting networks can be analytically predicted by a simple theoretical argument. In addition, we find that our results are well-fitted to the fuzzy-sphere model, which correctly reproduces the density profile of the microgels under study.
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Affiliation(s)
- Lorenzo Rovigatti
- CNR-ISC, Uos Sapienza, Piazzale A. Moro 2, 00185 Roma, Italy. Dipartimento di Fisica, Sapienza Università di Roma, Piazzale A. Moro 2, 00185 Roma, Italy
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23
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Rams-Baron M, Jędrzejowska A, Dulski M, Wolnica K, Geirhos K, Lunkenheimer P, Paluch M. Unusual dielectric response of 4-methyl-1,3-dioxolane derivatives. Phys Chem Chem Phys 2018; 20:28211-28222. [DOI: 10.1039/c8cp05913f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In this paper, we applied broadband dielectric spectroscopy (BDS) to investigate the molecular dynamics of three 4-methyl-1,3-dioxolane derivatives (MD) whose chemical structures differ in the length of non-polar alkyl side chains.
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Affiliation(s)
- Marzena Rams-Baron
- Institute of Physics
- University of Silesia
- 41-500 Chorzow
- Poland
- Silesian Center for Education and Interdisciplinary Research
| | - Agnieszka Jędrzejowska
- Institute of Physics
- University of Silesia
- 41-500 Chorzow
- Poland
- Silesian Center for Education and Interdisciplinary Research
| | - Mateusz Dulski
- Silesian Center for Education and Interdisciplinary Research
- 41-500 Chorzow
- Poland
- Institute of Material Science
- 41-500 Chorzow
| | - Kamila Wolnica
- Institute of Physics
- University of Silesia
- 41-500 Chorzow
- Poland
- Silesian Center for Education and Interdisciplinary Research
| | - Korbinian Geirhos
- Experimental Physics V
- Center for Electronic Correlations and Magnetism
- University of Augsburg
- 86159 Augsburg
- Germany
| | - Peter Lunkenheimer
- Experimental Physics V
- Center for Electronic Correlations and Magnetism
- University of Augsburg
- 86159 Augsburg
- Germany
| | - Marian Paluch
- Institute of Physics
- University of Silesia
- 41-500 Chorzow
- Poland
- Silesian Center for Education and Interdisciplinary Research
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24
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Cheng FR, Su T, Cao J, Luo XL, Li L, Pu Y, He B. Environment-stimulated nanocarriers enabling multi-active sites for high drug encapsulation as an “on demand” drug release system. J Mater Chem B 2018; 6:2258-2273. [DOI: 10.1039/c8tb00132d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Limited active sites in polyesters hinder fabrication of multifunctional biodegradable nanocarriers for successful clinical applications.
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Affiliation(s)
- F. R. Cheng
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
| | - T. Su
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
| | - J. Cao
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
| | - X. L. Luo
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- People's Republic of China
| | - Li Li
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
| | - Yuji Pu
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
| | - B. He
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
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25
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Wang Z, Gao J, Ustach V, Li C, Sun S, Hu S, Faller R. Tunable Permeability of Cross-Linked Microcapsules from pH-Responsive Amphiphilic Diblock Copolymers: A Dissipative Particle Dynamics Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:7288-7297. [PMID: 28661159 DOI: 10.1021/acs.langmuir.7b01586] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Using dissipative particle dynamics simulation, we probe the tunable permeability of cross-linked microcapsules made from pH-sensitive diblock copolymers poly(ethylene oxide)-b-poly(N,N-diethylamino-2-ethyl methacrylate) (PEO-b-PDEAEMA). We first examine the self-assembly of non-cross-linked microcapsules and their pH-responsive collapse and then explore the effects of cross-linking and block interaction on the swelling or deswelling of cross-linked microcapsules. Our results reveal a preferential loading of hydrophobic dicyclopentadiene (DCPD) molecules in PEO-b-PDEAEMA copolymers. Upon reduction of pH, non-cross-linked microcapsules fully decompose into small wormlike clusters as a result of large self-repulsions of protonated copolymers. With increasing degree of cross-linking, the morphology of the microcapsule becomes more stable to pH change. The highly cross-linked microcapsule shell undergoes significant local polymer rearrangement in acidic solution, which eliminates the amphiphilicility and therefore enlarges the permeability of the shell. The responsive cross-linked shell experiences a disperse-to-buckle configurational transition upon reduction of pH, which is effective for the steady or pulsatile regulation of shell permeability. The swelling rate of the cross-linked shell is dependent on both electrostatic and nonelectrostatic interactions between the pH-sensitive groups as well as the other groups. Our study highlights the combination of cross-linking structure and block interactions in stabilizing microcapsules and tuning their selective permeability.
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Affiliation(s)
- Zhikun Wang
- Department of Chemical Engineering, University of California , Davis, California 95616, United States
| | | | - Vincent Ustach
- Department of Chemical Engineering, University of California , Davis, California 95616, United States
| | | | | | | | - Roland Faller
- Department of Chemical Engineering, University of California , Davis, California 95616, United States
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26
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Kong X, Qian C, Zhao P, Lin Y, Fan W. Mesoscopic simulation of alkylimidazoline self-aggregation in aqueous solution. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2016.1217492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Xiangjun Kong
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, P. R. China
| | - Chengduo Qian
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, P. R. China
| | - Pinhui Zhao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, P. R. China
| | - Yan Lin
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, P. R. China
| | - Weiyu Fan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, P. R. China
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27
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Li J, Deng J, Yuan J, Fu J, Li X, Tong A, Wang Y, Chen Y, Guo G. Zonisamide-loaded triblock copolymer nanomicelles as a novel drug delivery system for the treatment of acute spinal cord injury. Int J Nanomedicine 2017; 12:2443-2456. [PMID: 28408816 PMCID: PMC5383091 DOI: 10.2147/ijn.s128705] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Spinal cord injury (SCI) commonly leads to lifelong disability due to the limited regenerative capacity of the adult central nervous system. Nanomicelles can be used as therapeutic systems to provide effective treatments for SCI. In this study, a novel triblock monomethyl poly(ethylene glycol)-poly(l-lactide)-poly(trimethylene carbonate) copolymer was successfully synthesized. Next, polymeric nanomicelles loaded with zonisamide (ZNS), a Food and Drug Administration-approved antiepileptic drug, were prepared and characterized. The ZNS-loaded micelles (ZNS-M) were further utilized for the treatment of SCI in vitro and in vivo. The obtained ZNS-M were ~50 nm in diameter with good solubility and dispersibility. Additionally, these controlled-release micelles showed significant antioxidative and neuron-protective effects in vitro. Finally, our results indicated that ZNS-M treatment could promote motor function recovery and could increase neuron and axon density in a hemisection SCI model. In summary, these results may provide an experimental basis for the use of ZNS-M as a clinically applicable therapeutic drug for the treatment of SCI in the future.
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Affiliation(s)
- JingLun Li
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing
| | - JiaoJiao Deng
- State Key Laboratory of Biotherapy and Cancer Center, and Department of Neurosurgery, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, People’s Republic of China
| | - JinXian Yuan
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing
| | - Jie Fu
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing
| | - XiaoLing Li
- State Key Laboratory of Biotherapy and Cancer Center, and Department of Neurosurgery, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, People’s Republic of China
| | - AiPing Tong
- State Key Laboratory of Biotherapy and Cancer Center, and Department of Neurosurgery, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, People’s Republic of China
| | - YueLong Wang
- State Key Laboratory of Biotherapy and Cancer Center, and Department of Neurosurgery, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, People’s Republic of China
| | - YangMei Chen
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing
| | - Gang Guo
- State Key Laboratory of Biotherapy and Cancer Center, and Department of Neurosurgery, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, People’s Republic of China
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28
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An N, Lin H, Yang C, Zhang T, Tong R, Chen Y, Qu F. Gated magnetic mesoporous silica nanoparticles for intracellular enzyme-triggered drug delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 69:292-300. [DOI: 10.1016/j.msec.2016.06.086] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 05/26/2016] [Accepted: 06/26/2016] [Indexed: 12/14/2022]
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29
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Zhang CY, Jian XL, Lu W. Ring formation in the quasi-two-dimensional system of the patchy magnetic spheres. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:145101. [PMID: 26965459 DOI: 10.1088/0953-8984/28/14/145101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Fabricating new functional materials has always been at the center of colloidal science, and how to form circular rings is a meaningful challenge due to their special electronic, magnetic and optical properties. Magnetic colloidal spheres can self-assemble into rings, but these rings have an uncontrollable length and shape and also have to coexist with chains and defected clusters. To make the most of magnetic spheres being able to self-assemble into rings, a patch is added to the surface of the sphere to form a chiral link between particles. The structural transition in the system of patchy magnetic spheres is studied using the Monte Carlo simulation. When the patch angle is in the interval 60° to 75°, rings become the dominant structure if the strength of patchy interaction exceeds a particular threshold and the shape of these rings is close to the circle. With an increase in the patch angle, the threshold of patchy interaction decreases and the average length of the circular ring increases approximately from 5 to 8.5.
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Affiliation(s)
- Cheng-yu Zhang
- College of Engineering, Nanjing Agricultural University, Nanjing 210031, People's Republic of China
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30
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Ramezanpour M, Leung SSW, Delgado-Magnero KH, Bashe BYM, Thewalt J, Tieleman DP. Computational and experimental approaches for investigating nanoparticle-based drug delivery systems. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:1688-709. [PMID: 26930298 DOI: 10.1016/j.bbamem.2016.02.028] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 02/20/2016] [Accepted: 02/23/2016] [Indexed: 12/21/2022]
Abstract
Most therapeutic agents suffer from poor solubility, rapid clearance from the blood stream, a lack of targeting, and often poor translocation ability across cell membranes. Drug/gene delivery systems (DDSs) are capable of overcoming some of these barriers to enhance delivery of drugs to their right place of action, e.g. inside cancer cells. In this review, we focus on nanoparticles as DDSs. Complementary experimental and computational studies have enhanced our understanding of the mechanism of action of nanocarriers and their underlying interactions with drugs, biomembranes and other biological molecules. We review key biophysical aspects of DDSs and discuss how computer modeling can assist in rational design of DDSs with improved and optimized properties. We summarize commonly used experimental techniques for the study of DDSs. Then we review computational studies for several major categories of nanocarriers, including dendrimers and dendrons, polymer-, peptide-, nucleic acid-, lipid-, and carbon-based DDSs, and gold nanoparticles. This article is part of a Special Issue entitled: Membrane Proteins edited by J.C. Gumbart and Sergei Noskov.
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Affiliation(s)
- M Ramezanpour
- Centre for Molecular Simulation, Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - S S W Leung
- Department of Physics, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - K H Delgado-Magnero
- Centre for Molecular Simulation, Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - B Y M Bashe
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - J Thewalt
- Department of Physics, Simon Fraser University, Burnaby, BC V5A 1S6, Canada; Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - D P Tieleman
- Centre for Molecular Simulation, Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada
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31
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Luo X, Wang Y, Lin H, Qu F. DOX-Fe3O4@mSiO2-PO-FA nanocomposite for synergistic chemo- and photothermal therapy. RSC Adv 2016. [DOI: 10.1039/c6ra23292b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
A DOX-Fe3O4@mSiO2-PO-FA nanocomposite based drug delivery system for cancer chemotherapy and photothermal therapy.
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Affiliation(s)
- Xiangjie Luo
- College of Chemistry and Chemical Engineering
- Harbin Normal University
- Harbin
- PR China
| | - Ying Wang
- College of Chemistry and Chemical Engineering
- Harbin Normal University
- Harbin
- PR China
| | - Huiming Lin
- College of Chemistry and Chemical Engineering
- Harbin Normal University
- Harbin
- PR China
| | - Fengyu Qu
- College of Chemistry and Chemical Engineering
- Harbin Normal University
- Harbin
- PR China
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32
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Masarudin MJ, Cutts SM, Evison BJ, Phillips DR, Pigram PJ. Factors determining the stability, size distribution, and cellular accumulation of small, monodisperse chitosan nanoparticles as candidate vectors for anticancer drug delivery: application to the passive encapsulation of [(14)C]-doxorubicin. Nanotechnol Sci Appl 2015; 8:67-80. [PMID: 26715842 PMCID: PMC4686320 DOI: 10.2147/nsa.s91785] [Citation(s) in RCA: 163] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Development of parameters for the fabrication of nanosized vectors is pivotal for its successful administration in therapeutic applications. In this study, homogeneously distributed chitosan nanoparticles (CNPs) with diameters as small as 62 nm and a polydispersity index (PDI) of 0.15 were synthesized and purified using a simple, robust method that was highly reproducible. Nanoparticles were synthesized using modified ionic gelation of the chitosan polymer with sodium tripolyphosphate. Using this method, larger aggregates were mechanically isolated from single particles in the nanoparticle population by selective efficient centrifugation. The presence of disaggregated monodisperse nanoparticles was confirmed using atomic force microscopy. Factors such as anions, pH, and concentration were found to affect the size and stability of nanoparticles directly. The smallest nanoparticle population was ∼62 nm in hydrodynamic size, with a low PDI of 0.15, indicating high particle homogeneity. CNPs were highly stable and retained their monodisperse morphology in serum-supplemented media in cell culture conditions for up to 72 hours, before slowly degrading over 6 days. Cell viability assays demonstrated that cells remained viable following a 72-hour exposure to 1 mg/mL CNPs, suggesting that the nanoparticles are well tolerated and highly suited for biomedical applications. Cellular uptake studies using fluorescein isothiocyanate-labeled CNPs showed that cancer cells readily accumulate the nanoparticles 30 minutes posttreatment and that nanoparticles persisted within cells for up to 24 hours posttreatment. As a proof of principle for use in anticancer therapeutic applications, a [(14)C]-radiolabeled form of the anticancer agent doxorubicin was efficiently encapsulated within the CNP, confirming the feasibility of using this system as a drug delivery vector.
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Affiliation(s)
- Mas Jaffri Masarudin
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Suzanne M Cutts
- Department of Biochemistry, La Trobe University, Melbourne, Victoria, Australia
| | - Benny J Evison
- Department of Chemical Biology and Therapeutics, St Jude Children's Hospital, Memphis, TN, USA
| | - Don R Phillips
- Department of Biochemistry, La Trobe University, Melbourne, Victoria, Australia
| | - Paul J Pigram
- Department of Physics, La Trobe University, Melbourne, Victoria, Australia
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Wang Y, Zhu DD, Zhou J, Wang QL, Zhang CY, Liu YJ, Wu ZM, Guo XD. Mesoscopic simulation studies on the formation mechanism of drug loaded polymeric micelles. Colloids Surf B Biointerfaces 2015; 136:536-44. [DOI: 10.1016/j.colsurfb.2015.09.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 09/21/2015] [Accepted: 09/25/2015] [Indexed: 01/06/2023]
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Investigation of the phase behavior of food-grade microemulsions by mesoscopic simulation. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.09.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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Wang Y, Li QY, Liu XB, Zhang CY, Wu ZM, Guo XD. Mesoscale Simulations and Experimental Studies of pH-Sensitive Micelles for Controlled Drug Delivery. ACS APPLIED MATERIALS & INTERFACES 2015; 7:25592-25600. [PMID: 26539742 DOI: 10.1021/acsami.5b08366] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The microstructures of doxorubicin-loaded micelles prepared from block polymers His(x)Lys10 (x = 0, 5, 10) conjugated with docosahexaenoic acid (DHA) are investigated under different pH conditions, using dissipative particle dynamics (DPD) simulations. The conformation of micelles and the DOX distributions in micelles were obviously influenced by pH values and the length of the histidine segment. At pH >6.0, the micelles self-assembled from the polymers were dense and compact. The drugs were entrapped well within the micellar core. The particle size increases as the histidine length increases. With the decrease of pH value to be lower than 6.0, there was no distinct difference for the micelles self-assembled from the polymer without histidine residues. However, the micelles prepared from the polymers with histidine residues shows a structural transformation from dense to swollen conformation, leading to an increased particle size from 10.3 to 14.5 DPD units for DHD-His10Lys10 micelles. This structural transformation of micelles can accelerate the DOX release from micelles under lower pH conditions. The in vitro drug release from micelles is accelerated by the decrease of pH value from 7.4 (physiological environment) to 5.0 (lysosomal environment). The integration of simulation and experiments might be a valuable method for the optimization and design of biomaterials for drug delivery with desired properties.
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Affiliation(s)
- Yan Wang
- Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology , Beijing, 100029, People's Republic of China
- School of Chemical Engineering, Xiangtan University , Xiangtan 411105, People's Republic of China
| | - Qiu Yu Li
- Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology , Beijing, 100029, People's Republic of China
| | - Xu Bo Liu
- Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology , Beijing, 100029, People's Republic of China
| | - Can Yang Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology of China , Beijing 100190, People's Republic of China
| | - Zhi Min Wu
- School of Chemical Engineering, Xiangtan University , Xiangtan 411105, People's Republic of China
| | - Xin Dong Guo
- Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology , Beijing, 100029, People's Republic of China
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36
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Tan H, Wang W, Yu C, Zhou Y, Lu Z, Yan D. Dissipative particle dynamics simulation study on self-assembly of amphiphilic hyperbranched multiarm copolymers with different degrees of branching. SOFT MATTER 2015; 11:8460-8470. [PMID: 26364696 DOI: 10.1039/c5sm01495f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Hyperbranched multiarm copolymers (HMCs) have shown great potential to be excellent precursors in self-assembly to form various supramolecular structures in all scales and dimensions in solution. However, theoretical studies on the self-assembly of HMCs, especially the self-assembly dynamics and mechanisms, have been greatly lagging behind the experimental progress. Herein, we investigate the effect of degree of branching (DB) on the self-assembly structures of HMCs by dissipative particle dynamics (DPD) simulation. Our simulation results demonstrate that the self-assembly morphologies of HMCs can be changed from spherical micelles, wormlike micelles, to vesicles with the increase of DBs, which are qualitatively consistent with the experimental observations. In addition, both the self-assembly mechanisms and the dynamic processes for the formation of these three aggregates have been systematically disclosed through the simulations. These self-assembly details are difficult to be shown by experiments and are very useful to fully understand the self-assembly behaviors of HMCs.
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Affiliation(s)
- Haina Tan
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
| | - Wei Wang
- Institute of Theoretical Chemistry, State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130021, P. R. China.
| | - Chunyang Yu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
| | - Yongfeng Zhou
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
| | - Zhongyuan Lu
- Institute of Theoretical Chemistry, State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130021, P. R. China.
| | - Deyue Yan
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
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Yu T, Gao Y, Wang B, Dai X, Jiang W, Song R, Zhang Z, Jin M, Tang Y, Wang Z. Depolymerization of Free-Radical Polymers with Spin Migrations. Chemphyschem 2015; 16:3308-12. [PMID: 26335946 DOI: 10.1002/cphc.201500645] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Indexed: 01/03/2023]
Abstract
The mechanism of depolymerization is one of the most essential issues in chemical engineering and materials science. In this work, we investigate the depolymerization reactions of three typical free-radical poly(alpha-methylstyrene) tetramers by using first-principles density functional theory. The calculated results show that these reactions all need to overcome the energy barriers in the range of 0.58 to 0.77 eV, and that breaking the C-C bond at the chain end leads to the dissociation of alpha-methylstyrene monomers from the polymers. Electronic-structure analysis indicates that the reactions occur easily at the CR3 unsaturated end, and that the frontier molecular orbitals that participate in the reactions are mainly localized at the unsaturated ends. Meanwhile, spin population analysis presents the unique net spin-transfer process in free-radical depolymerization reactions. We hope the current findings can contribute to understanding the free-radical depolymerization mechanism and help guide future experiments.
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Affiliation(s)
- Tianrong Yu
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun, 130012, P. R. China
| | - Yang Gao
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun, 130012, P. R. China
| | - Bo Wang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun, 130012, P. R. China
| | - Xing Dai
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun, 130012, P. R. China
| | - Wanrun Jiang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun, 130012, P. R. China
| | - Ruixia Song
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun, 130012, P. R. China
| | - Zhanwen Zhang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun, 130012, P. R. China
- China Academy of Engineering Physics, Mianyang, 621900, P. R. China
| | - Mingxing Jin
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun, 130012, P. R. China
| | - Yongjian Tang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun, 130012, P. R. China
- China Academy of Engineering Physics, Mianyang, 621900, P. R. China
| | - Zhigang Wang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China.
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun, 130012, P. R. China.
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38
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Cheng F, Guan X, Cao H, Su T, Cao J, Chen Y, Cai M, He B, Gu Z, Luo X. Characteristic of core materials in polymeric micelles effect on their micellar properties studied by experimental and dpd simulation methods. Int J Pharm 2015. [PMID: 26196277 DOI: 10.1016/j.ijpharm.2015.07.031] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Polymeric micelles are one important class of nanoparticles for anticancer drug delivery, but the impact of hydrophobic segments on drug encapsulation and release is unclear, which deters the rationalization of drug encapsulation into polymeric micelles. This paper focused on studying the correlation between the characteristics of hydrophobic segments and encapsulation of structurally different drugs (DOX and β-carotene). Poly(ϵ-caprolactone) (PCL) or poly(l-lactide) (PLLA) were used as hydrophobic segments to synthesize micelle-forming amphiphilic block copolymers with the hydrophilic methoxy-poly(ethylene glycol) (mPEG). Both blank and drug loaded micelles were spherical in shape with sizes lower than 50 nm. PCL-based micelles exhibited higher drug loading capacity than their PLLA-based counterparts. Higher encapsulation efficiency of β-carotene was achieved compared with DOX. In addition, both doxorubicin and β-carotene were released much faster from PCL-based polymeric micelles. Dissipative particle dynamics (DPD) simulation revealed that the two drugs tended to aggregate in the core of the PCL-based micelles but disperse in the core of PLLA based micelles. In vitro cytotoxicity investigation of DOX loaded micelles demonstrated that a faster drug release warranted a more efficient cancer-killing effect. This research could serve as a guideline for the rational design of polymeric micelles for drug delivery.
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Affiliation(s)
- Furong Cheng
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China; National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Xuewa Guan
- West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Huan Cao
- Institute of Biomedical and Pharmaceutical Technology, Fuzhou University, Fuzhou 350116, China
| | - Ting Su
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Jun Cao
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China.
| | - Yuanwei Chen
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Mengtan Cai
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Bin He
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Zhongwei Gu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Xianglin Luo
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China.
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39
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Zhang T, Ding Z, Lin H, Cui L, Yang C, Li X, Niu H, An N, Tong R, Qu F. pH-Sensitive Gold Nanorods with a Mesoporous Silica Shell for Drug Release and Photothermal Therapy. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201403247] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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40
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Song X, Shi P, Duan M, Fang S, Ma Y. Investigation of demulsification efficiency in water-in-crude oil emulsions using dissipative particle dynamics. RSC Adv 2015. [DOI: 10.1039/c5ra06570d] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Demulsification efficiency with alternating hydrophobic blocks of the polyether is investigated by dissipative particle dynamics.
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Affiliation(s)
- Xianyu Song
- College of Chemistry and Chemical Engineering
- Southwest University of Petroleum
- Chengdu
- P. R. China
| | - Peng Shi
- College of Chemistry and Chemical Engineering
- Southwest University of Petroleum
- Chengdu
- P. R. China
| | - Ming Duan
- College of Chemistry and Chemical Engineering
- Southwest University of Petroleum
- Chengdu
- P. R. China
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province
| | - Shenwen Fang
- College of Chemistry and Chemical Engineering
- Southwest University of Petroleum
- Chengdu
- P. R. China
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province
| | - Yongzhang Ma
- College of Chemistry and Chemical Engineering
- Southwest University of Petroleum
- Chengdu
- P. R. China
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41
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Nie SY, Lin WJ, Yao N, Guo XD, Zhang LJ. Drug release from pH-sensitive polymeric micelles with different drug distributions: insight from coarse-grained simulations. ACS APPLIED MATERIALS & INTERFACES 2014; 6:17668-17678. [PMID: 25275994 DOI: 10.1021/am503920m] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
How to control the release of drugs from pH-sensitive polymeric micelles is an issue of common concern, which is important to the effectiveness of the micelles. The components and properties of polymers can notably influence the drug distributions inside micelles which is a key factor that affects the drug release from the micelles. In this work, the dissipative particle dynamics simulation method is first used to study the structural transformation of micelles during the protonation process and the drug release process from micelles with different drug distributions. And then the effects of polymer structures, including different lengths of hydrophilic blocks, pH-sensitive blocks and hydrophobic blocks, on drug release are also studied. In the end, several corresponding design principles of pH-sensitive polymers for drug delivery are proposed according to the simulation results. This work is in favor of establishing qualitative rules for the design and optimization of congener polymers for desired drug delivery, which is of great significance to provide a potential approach for the development of new multiblock pH-sensitive polymeric micelles.
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Affiliation(s)
- Shu Yu Nie
- School of Chemistry and Chemical Engineering, South China University of Technology , Guangzhou 510640, P. R. China
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42
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Lin WJ, Nie SY, Chen Q, Qian Y, Wen XF, Zhang LJ. Structure-property relationship of pH-sensitive (PCL)2(PDEA-b-PPEGMA)2micelles: Experiment and DPD simulation. AIChE J 2014. [DOI: 10.1002/aic.14562] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Wen Jing Lin
- School of Chemistry and Chemical Engineering, South China University of Technology; Guangzhou 510640 P. R. China
| | - Shu Yu Nie
- School of Chemistry and Chemical Engineering, South China University of Technology; Guangzhou 510640 P. R. China
| | - Quan Chen
- School of Chemistry and Chemical Engineering, South China University of Technology; Guangzhou 510640 P. R. China
| | - Yu Qian
- School of Chemistry and Chemical Engineering, South China University of Technology; Guangzhou 510640 P. R. China
| | - Xiu Fang Wen
- School of Chemistry and Chemical Engineering, South China University of Technology; Guangzhou 510640 P. R. China
| | - Li Juan Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology; Guangzhou 510640 P. R. China
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43
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Guo W, Yang C, Cui L, Lin H, Qu F. An enzyme-responsive controlled release system of mesoporous silica coated with Konjac oligosaccharide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:243-249. [PMID: 24380643 DOI: 10.1021/la403494q] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A simple and green method to fabricate an ingenious enzyme-responsive drug controlled release system was presented. Mesoporous silica material (mSiO2) 100 nm in size was used as the host, and Konjac oligosaccharide (KOGC) was employed to seal the nanopores of mSiO2 to inhibit the drug release. Rhodamine B was used as the model cargo to reveal the release behavior of the system. The KOGC-modified mSiO2 (mSiO2@KOGC) retains the drug until it reaches the colonic environment where bacteria secrete enzymes (β-mannanase) can degrade KOGC and make drug release. The amount of KOGC and enzyme can be used to adjust the release performance. And all the release behaviors fit the two-step Higuchi model, which predominate by KOGC degradation and mesoporous structure, respectively. With well bioactivity and selectivity, the system has potential application as an oral medicine carrier for treating intestinal disease.
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Affiliation(s)
- Wei Guo
- Department of Photoelectric Band Gap Materials Key Laboratory of Ministry of Education, College of Chemistry and Chemical Engineering, Harbin Normal University , Harbin 150025, China
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