1
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Ran T, Ji C, Zhang Q, Wang S, Zhang Y, Niu W, Wei T, Shi Y. Advanced treatment and reuse of dye wastewater using thermo-irreversible on/off switch starch with disruption of dissolution/precipitation dynamic equilibrium. Carbohydr Polym 2024; 342:122425. [PMID: 39048208 DOI: 10.1016/j.carbpol.2024.122425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 06/16/2024] [Accepted: 06/20/2024] [Indexed: 07/27/2024]
Abstract
The development of irreversible on/off switching materials is a potential strategy for unidirectional capture and encapsulation of pollutants, preventing the pollutant leakage problem resulting from the reversible dissolution of flocculants. Herein, a thermo-irreversible on/off switch starch (TISS) is prepared through modifying starch by etherification grafting glycidyl phenyl ether and 2,4-bis(dimethylamino)-6-chloro-[1,3,5]-triazine. It breaks the dissolution/precipitation dynamic equilibrium across heating-cooling cycles by thermal-induced irreversible coil-to-globule self-assembly of polymer chains, resulting in a 50-fold decrease in polymer solubility. Particularly, TISS shows a superior double-locking effect on pollutants and flocculants through its unique irreversible conformation memory capability, leading to a high-quality reuse water. 99.9 % of reactive brilliant red dye and 97.9 % of TISS remain fixed within sludge flocs even after prolonged immersion in cold water at 24 °C for 60 days. Furthermore, direct recycling and reuse of dye-bath energy can be realized through the isothermal flocculation and dyeing method, showing a 75 % decrease in energy consumption after three cycles compared to traditional dyeing techniques. This work presents a novel approach to constructing an irreversible pollutant delivery system using thermo-irreversible on/off switch starch, addressing the problems of high energy dissipation and water quality fluctuations during wastewater treatment.
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Affiliation(s)
- Tingmin Ran
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832000, China
| | - Chenchen Ji
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, China.
| | - Qi Zhang
- Xinjiang Shenbang Environmental Engineering Co., Ltd, Shihezi 832000, China
| | - Shengxin Wang
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832000, China
| | - Yanxue Zhang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, China
| | - Wenbin Niu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, West Campus, 2 Linggong Rd., Dalian 116024, China
| | - Tingting Wei
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, China.
| | - Yulin Shi
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832000, China; State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, China.
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2
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Sproncken CM, Gumí-Audenis B, Foroutanparsa S, Magana JR, Voets IK. Controlling the Formation of Polyelectrolyte Complex Nanoparticles Using Programmable pH Reactions. Macromolecules 2022; 56:226-233. [PMID: 36644553 PMCID: PMC9835975 DOI: 10.1021/acs.macromol.2c01431] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 11/28/2022] [Indexed: 12/23/2022]
Abstract
Enabling complexation of weak polyelectrolytes, in the presence of a programmable pH-modulation, offers a means to achieve temporal control over polyelectrolyte coassembly. Here, by mixing oppositely charged poly(allylamine hydrochloride) and poly(sodium methacrylate) in a (bi)sulfite buffer, nanoscopic complex coacervates are formed. Addition of formaldehyde initiates the formaldehyde-sulfite clock reaction, affecting the polyelectrolyte assembly in two ways. First, the abrupt pH increase from the reaction changes the charge density of the polyelectrolytes and thus the ratio of cationic and anionic species. Simultaneously, reactions between the polyamine and formaldehyde lead to chemical modifications on the polymer. Interestingly, core-shell polymeric nanoparticles are produced, which remain colloidally stable for months. Contrastingly, in the same system, in the absence of the clock reaction, aggregation and phase separation occur within minutes to days after mixing. Introducing an acid-producing reaction enables further temporal control over the coassembly, generating transient nanoparticles with nanoscopic dimensions and an adjustable lifetime of tens of minutes.
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3
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Quintieri G, Schlattmann D, Schönhoff M, Gröschel AH. Fabrication of diverse multicompartment micelles by redispersion of triblock terpolymer bulk morphologies. NANOSCALE 2022; 14:12658-12667. [PMID: 36018306 DOI: 10.1039/d2nr03874a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Redispersing block copolymer (BCP) bulk films in selective solvents is a simple and efficient method to prepare BCP micelles and polymersomes. While ABC triblock terpolymers are known to form multicompartment micelles (MCMs) with intricate nanoarchitecture, this is typically done by solvent exchange instead of redispersion of bulk films despite obvious advantages of greatly reduced solvent usage. Here, we provide guidelines on how to form MCMs with defined shapes and inner structure through direct redispersion of terpolymer bulk morphologies in selective plasticizing solvents. For this purpose, we redisperse a series of polystyrene-b-polybutadiene-b-poly(tert-butyl methacrylate) (PS-b-PB-b-PT) triblock terpolymers in acetone/isopropanol mixtures, where PT is always soluble, PB always insoluble, and PS will range from soft (high acetone content) to kinetically frozen (high isopropanol content). We investigate the effect of solvent mixtures, block composition, and thermal annealing on MCM shape and core morphology. Additionally, we performed terpolymer blend experiments to open up a simple route to further diversify the range of accessible MCM morphologies.
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Affiliation(s)
- Giada Quintieri
- Physical Chemistry, University of Münster, Corrensstr. 28-30, 48149 Münster, Germany.
- Center for Soft Nanoscience (SoN), University of Münster, Busso-Peus-Str. 10, 48149 Münster, Germany
| | - Daniel Schlattmann
- Physical Chemistry, University of Münster, Corrensstr. 28-30, 48149 Münster, Germany.
- Center for Soft Nanoscience (SoN), University of Münster, Busso-Peus-Str. 10, 48149 Münster, Germany
| | - Monika Schönhoff
- Physical Chemistry, University of Münster, Corrensstr. 28-30, 48149 Münster, Germany.
- Center for Soft Nanoscience (SoN), University of Münster, Busso-Peus-Str. 10, 48149 Münster, Germany
| | - André H Gröschel
- Physical Chemistry, University of Münster, Corrensstr. 28-30, 48149 Münster, Germany.
- Center for Soft Nanoscience (SoN), University of Münster, Busso-Peus-Str. 10, 48149 Münster, Germany
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4
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Choi J, Heo T, Choi H, Choi S, Won J. Co‐assembly
behavior of oppositely charged thermoresponsive elastin‐like polypeptide block copolymers. J Appl Polym Sci 2022. [DOI: 10.1002/app.52906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jeong‐Wan Choi
- Department of Chemical Engineering Hongik University Seoul Republic of Korea
| | - Tae‐Young Heo
- Department of Chemical Engineering Hongik University Seoul Republic of Korea
| | - Heelak Choi
- Department of Chemical Engineering Hongik University Seoul Republic of Korea
| | - Soo‐Hyung Choi
- Department of Chemical Engineering Hongik University Seoul Republic of Korea
| | - Jong‐In Won
- Department of Chemical Engineering Hongik University Seoul Republic of Korea
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5
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Pham TT, Takahashi R, Pham TD, Yusa SI. Stable Water-soluble Polyion Complex Micelles Composed of Oppositely Charged Diblock Copolymers and Reinforced by Hydrophobic Interactions. CHEM LETT 2022. [DOI: 10.1246/cl.220241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Thu Thao Pham
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Rintaro Takahashi
- Department of Energy Engineering, Graduate School of Engineering, Nagoya University, Furo-cho Chikusa-ku, Nagoya, Aichi, 464-8603, Japan
| | - Tien Duc Pham
- Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi 100000, Vietnam
| | - Shin-ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
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6
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Bos I, Brink E, Michels L, Sprakel J. DNA dynamics in complex coacervate droplets and micelles. SOFT MATTER 2022; 18:2012-2027. [PMID: 35191449 PMCID: PMC8905490 DOI: 10.1039/d1sm01787j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
Single stranded DNA (ssDNA), or another polyanion, can be mixed with polycations to form liquid-like complex coacervates. When the polycations are replaced by cationic-neutral diblock copolymers, complex coacervate core micelles (C3Ms) can be formed instead. In both complex coacervates and C3Ms, dynamics plays an important role. Yet, to date, the effect of chain length on the dynamics effect is still not fully understood. The DNA complexes provide a versatile platform to further elucidate these chain length effects because the DNA is monodisperse and its length can be easily adapted. Therefore, we study in this paper the dynamics of fluorescently labelled ssDNA in both complex coacervate droplets and micelles. The DNA dynamics in the complex coacervate droplets is probed by fluorescence recovery after photobleaching (FRAP). We observe that the DNA diffusion coefficient depends more strongly on the DNA length than predicted by the sticky Rouse model and we show that this can be partly explained by changes in complex coacervate density, but that also other factors might play a role. We measure the molecular exchange of C3Ms by making use of Förster resonance energy transfer (FRET) and complement these measurements with Langevin dynamics simulations. We conclude that chain length polydispersity is the main cause of a broad distribution of exchange rates. We hypothesise that the different exchange rates that we observe for the monodisperse DNA are mainly caused by differences in dye interactions and show that the dye can indeed have a large effect on the C3M exchange. In addition, we show that a new description of the C3M molecular exchange is required that accounts among others for the effect of the length of the oppositely charged core species. Together our findings can help to better understand the dynamics in both specific DNA systems and in complex coacervate droplets and micelles in general.
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Affiliation(s)
- Inge Bos
- Physical Chemistry and Soft Matter, Wageningen University & Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands.
| | - Eline Brink
- Physical Chemistry and Soft Matter, Wageningen University & Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands.
| | - Lucile Michels
- Physical Chemistry and Soft Matter, Wageningen University & Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands.
| | - Joris Sprakel
- Physical Chemistry and Soft Matter, Wageningen University & Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands.
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7
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Fay JM, Kabanov AV. Interpolyelectrolyte Complexes as an Emerging Technology for Pharmaceutical Delivery of Polypeptides. REVIEWS AND ADVANCES IN CHEMISTRY 2022. [PMCID: PMC9987408 DOI: 10.1134/s2634827622600177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Polyelectrolyte complexes and the derivatives thereof comprise some of the most promising vehicles for the encapsulation and delivery of macromolecular therapeutics. In particular, protein therapeutics, which present a host of special considerations, can often be effectively packaged and delivered using interpolyelectrolyte complexes. While the technologies are still in the developmental phase, there are numerous examples of complexes where control is exerted over spacial and temporal delivery of a model protein cargo or candidate protein therapeutic agent. Here we provide a historical and practical background to promote a deeper understanding of interpolyelectrolyte complexes and the derivative technologies. Additionally, we review the physical principles underlying the association of polyelectrolyte complexes and the application of those principles to novel strategies and technologies driving interpolyelectrolyte complexation. Then, the application of polyelectrolyte complex technology to protein therapeutics is discussed in detail including discussions of several types of protein cargo with a special emphasis on Brain-Derived Neurotrophic Factor. Finally, we focus on the use of stealth polymers in block ionomer complexes, specifically PEG; its benefits, flaws, and possible alternatives. Comprehensive understanding of the field may promote the continued development of derivative technologies for the delivery of particularly intransigent protein therapeutics, much as has been accomplished for small molecule drugs. We also aim to link current advances to the historical developments which inaugurated the field. With consideration to the field, industrial and academic researchers can utilize the discussed technologies and continue to elucidate novel modalities for a myriad of therapeutic and commercial applications.
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Affiliation(s)
- James M. Fay
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, NC 27599-7362 Chapel Hill, USA ,Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina, NC 27599-7260 Chapel Hill, USA
| | - Alexander V. Kabanov
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina, NC 27599-7362 Chapel Hill, USA ,Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina, NC 27599-7260 Chapel Hill, USA ,Faculty of Chemistry, Moscow State University, 119992 Moscow, Russia
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8
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Demirelli M, Peyre V, Sirieix-Plénet J, Malikova N, Fresnais J. Influence of polycation/cation competition on the aggregation threshold of magnetic nanoparticles. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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9
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Sproncken CM, Magana JR, Voets IK. 100th Anniversary of Macromolecular Science Viewpoint: Attractive Soft Matter: Association Kinetics, Dynamics, and Pathway Complexity in Electrostatically Coassembled Micelles. ACS Macro Lett 2021; 10:167-179. [PMID: 33628618 PMCID: PMC7894791 DOI: 10.1021/acsmacrolett.0c00787] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 01/05/2021] [Indexed: 02/07/2023]
Abstract
Electrostatically coassembled micelles constitute a versatile class of functional soft materials with broad application potential as, for example, encapsulation agents for nanomedicine and nanoreactors for gels and inorganic particles. The nanostructures that form upon the mixing of selected oppositely charged (block co)polymers and other ionic species greatly depend on the chemical structure and physicochemical properties of the micellar building blocks, such as charge density, block length (ratio), and hydrophobicity. Nearly three decades of research since the introduction of this new class of polymer micelles shed significant light on the structure and properties of the steady-state association colloids. Dynamics and out-of-equilibrium processes, such as (dis)assembly pathways, exchange kinetics of the micellar constituents, and reaction-assembly networks, have steadily gained more attention. We foresee that the broadened scope will contribute toward the design and preparation of otherwise unattainable structures with emergent functionalities and properties. This Viewpoint focuses on current efforts to study such dynamic and out-of-equilibrium processes with greater spatiotemporal detail. We highlight different approaches and discuss how they reveal and rationalize similarities and differences in the behavior of mixed micelles prepared under various conditions and from different polymeric building blocks.
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Affiliation(s)
- Christian
C. M. Sproncken
- Laboratory of Self-Organizing
Soft Matter, Department of Chemical Engineering and Chemistry and
Institute for Complex Molecular Systems, Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven, The Netherlands
| | - J. Rodrigo Magana
- Laboratory of Self-Organizing
Soft Matter, Department of Chemical Engineering and Chemistry and
Institute for Complex Molecular Systems, Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Ilja K. Voets
- Laboratory of Self-Organizing
Soft Matter, Department of Chemical Engineering and Chemistry and
Institute for Complex Molecular Systems, Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven, The Netherlands
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10
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Bos I, Sprakel J. Langevin Dynamics Simulations of the Exchange of Complex Coacervate Core Micelles: The Role of Nonelectrostatic Attraction and Polyelectrolyte Length. Macromolecules 2019; 52:8923-8931. [PMID: 31787780 PMCID: PMC6881903 DOI: 10.1021/acs.macromol.9b01442] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 10/04/2019] [Indexed: 12/12/2022]
Abstract
Complex coacervate core micelles (C3Ms) are promising encapsulators for a wide variety of (bio)molecules. To protect and stabilize their cargo, it is essential to control their exchange dynamics. Yet, to date, little is known about the kinetic stability of C3Ms and the dynamic equilibrium of molecular building blocks with micellar species. Here we study the C3M exchange during the initial micellization by using Langevin dynamics simulations. In this way, we show that charge neutral heterocomplexes consisting of multiple building blocks are the primary mediator for exchange. In addition, we show that the kinetic stability of the C3Ms can be tuned not only by the electrostatic interaction but also by the nonelectrostatic attraction between the polyelectrolytes, the polyelectrolyte length ratio, and the overall polyelectrolyte length. These insights offer new rational design guides to aid the development of new C3M encapsulation strategies.
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Affiliation(s)
- Inge Bos
- Physical Chemistry and Soft
Matter, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Joris Sprakel
- Physical Chemistry and Soft
Matter, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
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11
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Fehér B, Zhu K, Nyström B, Varga I, Pedersen JS. Effect of Temperature and Ionic Strength on Micellar Aggregates of Oppositely Charged Thermoresponsive Block Copolymer Polyelectrolytes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13614-13623. [PMID: 31577150 DOI: 10.1021/acs.langmuir.9b01896] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The self-assembly of two oppositely charged diblock copolymers that have a common thermosensitive nonionic block of poly(N-isopropylacrylamide) (pNIPAAM) has been investigated. The effect of the mixing ratio and total polymer concentrations on the self-assembly of the components and on the phase stability of the mixtures was studied by dynamic light scattering, electrophoretic mobility, and turbidimetry measurements in water at 20 °C. The effect of the competing electrostatic and hydrophobic interactions on the nanostructure of negatively charged electrostatically self-assembled micelles bearing a pNIPAAM corona was investigated by small-angle X-ray scattering (SAXS). The electrostatic and hydrophobic interactions were controlled independently by tuning the ionic strength (from pure water to 50 mM NaCl) and the temperature (20-50 °C) of the investigated mixtures. The SAXS data could be fitted by a spherical micelle model, which has a smoothly decaying radial profile and a Gaussian star term that describes the internal structure of the micellar structures and possible attractive interactions between the polymer chains. At high temperature, a cluster structure factor was included for describing the formation of bulky clusters of the formed micelles. At low temperature and ionic strength, the formation of micelles with a coacervate core and hydrated pNIPAAM shell was observed. The structural evolution of the self-assembled micelles with increasing ionic strength and temperature could be followed, and finally at high ionic strength and temperature, the formation of inverted micelles with a hydrophobic core and polyelectrolyte shell could be identified.
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Affiliation(s)
- Bence Fehér
- Institute of Chemistry , ELTE , Pázmány Péter sétány 1/A , Budapest 1117 , Hungary
- Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus C , Denmark
| | - Kaizheng Zhu
- Department of Chemistry , University of Oslo , P.O. Box 1033, Blindern , N-0315 Oslo , Norway
| | - Bo Nyström
- Department of Chemistry , University of Oslo , P.O. Box 1033, Blindern , N-0315 Oslo , Norway
| | - Imre Varga
- Institute of Chemistry , ELTE , Pázmány Péter sétány 1/A , Budapest 1117 , Hungary
| | - Jan Skov Pedersen
- Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus C , Denmark
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12
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Wang J, Wang J, Ding P, Zhou W, Li Y, Drechsler M, Guo X, Cohen Stuart MA. A Supramolecular Crosslinker To Give Salt-Resistant Polyion Complex Micelles and Improved MRI Contrast Agents. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805707] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jiahua Wang
- State Key Laboratory of Chemical Engineering and Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Junyou Wang
- State Key Laboratory of Chemical Engineering and Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Peng Ding
- State Key Laboratory of Chemical Engineering and Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Wenjuan Zhou
- State Key Laboratory of Chemical Engineering and Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Yuehua Li
- Institute of Diagnostic and Interventional Radiology; The Sixth Affiliated People's Hospital; Shanghai Jiao Tong University; 600 Yi Shan Road Shanghai 200233 P. R. China
| | - Markus Drechsler
- Bavarian Polymer Institute (BPI); KeyLab of Electron and Optical Microscopy; University Bayreuth; Universitaetsstrasse 30 95440 Bayreuth Germany
| | - Xuhong Guo
- State Key Laboratory of Chemical Engineering and Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Martien A. Cohen Stuart
- State Key Laboratory of Chemical Engineering and Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
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13
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Wang J, Wang J, Ding P, Zhou W, Li Y, Drechsler M, Guo X, Cohen Stuart MA. A Supramolecular Crosslinker To Give Salt-Resistant Polyion Complex Micelles and Improved MRI Contrast Agents. Angew Chem Int Ed Engl 2018; 57:12680-12684. [DOI: 10.1002/anie.201805707] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Jiahua Wang
- State Key Laboratory of Chemical Engineering and Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Junyou Wang
- State Key Laboratory of Chemical Engineering and Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Peng Ding
- State Key Laboratory of Chemical Engineering and Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Wenjuan Zhou
- State Key Laboratory of Chemical Engineering and Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Yuehua Li
- Institute of Diagnostic and Interventional Radiology; The Sixth Affiliated People's Hospital; Shanghai Jiao Tong University; 600 Yi Shan Road Shanghai 200233 P. R. China
| | - Markus Drechsler
- Bavarian Polymer Institute (BPI); KeyLab of Electron and Optical Microscopy; University Bayreuth; Universitaetsstrasse 30 95440 Bayreuth Germany
| | - Xuhong Guo
- State Key Laboratory of Chemical Engineering and Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Martien A. Cohen Stuart
- State Key Laboratory of Chemical Engineering and Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
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14
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Dähling C, Houston JE, Radulescu A, Drechsler M, Brugnoni M, Mori H, Pergushov DV, Plamper FA. Self-Templated Generation of Triggerable and Restorable Nonequilibrium Micelles. ACS Macro Lett 2018; 7:341-346. [PMID: 35632909 DOI: 10.1021/acsmacrolett.8b00096] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Conditional variations can lead to micellar transformations resulting in various (equilibrium) morphologies. However, creating differently shaped assemblies under the same final conditions (same ingredients, composition, temperature, etc.) is challenging. We present a thermoresponsive polyelectrolyte system allowing a pathway-dependent preparation of kinetically stable spherical star-like or cylindrical micelles. In more detail, a temperature-induced structure switch is used to generate equilibrated interpolyelectrolyte complex (IPEC) micelles of different morphologies (templates) below and above the lower critical solution temperature in the presence of plasticizer (salt). Then, lowering the salt concentration at a specific temperature kinetically freezes the formed IPECs, keeping the respective microstructural information encoded in the frozen IPEC also at other temperatures. Hence, different nonequilibrium morphologies at the same final conditions are provided. The salt-triggered transition from nonequilibrium to equilibrium micelles can be repeated for the same sample, highlighting a system with an on-demand changeable and restorable structure.
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Affiliation(s)
- Claudia Dähling
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
| | - Judith E. Houston
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstraße 1, 85748 Garching, Germany
| | - Aurel Radulescu
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstraße 1, 85748 Garching, Germany
| | - Markus Drechsler
- Bavarian Polymer Institute, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany
| | - Monia Brugnoni
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
| | - Hideharu Mori
- Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Japan
| | - Dmitry V. Pergushov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, 119991 Moscow, Russia
| | - Felix A. Plamper
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
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15
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Fattahi A, Karimi N, Rahmati F, Shokoohinia Y, Sadrjavadi K. Preparation and physicochemical characterization of camptothecin conjugated poly amino ester–methyl ether poly ethylene glycol copolymer. RSC Adv 2018; 8:12951-12959. [PMID: 35541238 PMCID: PMC9079732 DOI: 10.1039/c8ra01407h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 03/21/2018] [Indexed: 11/21/2022] Open
Abstract
In the present study, camptothecin grafted poly amino ester-methyl ether polyethylene glycol (CPT-PEA-MPEG) as a novel copolymer was synthesized by Michael reaction at different ratios of MPEG and CPT (60 : 40 and 80 : 20). The microemulsion was used to prepare nanomicelles, and in vitro cytotoxicity was performed on the HT29 cell line, and cell survival was measured by MTT assay. The syntheses were confirmed by 1H NMR and FT-IR. Several characterization methods including CMC, particle size, size distribution, and transmission electron microscopy were performed to evaluate features of prepared nanomicelles. Low critical micelle concentration, small particle size and IC50 of 0.1 mg ml−1 at MPEG to CPT ratio of 60 : 40 make this micelle a promising drug delivery carrier. CPT-PAE-MPEG nanomicelles at a MPEG : CPT ratio of 60 : 40 can be a suitable choice to improve the physiochemical properties of CPT and its therapeutic effect, while it can be potentially used as a nano-carrier for other anticancer drugs to purpose a dual drug delivery. In the present study, camptothecin grafted poly amino ester-methyl ether polyethylene glycol (CPT-PEA-MPEG) as a novel copolymer was synthesized by Michael reaction at different ratios of MPEG and CPT (60 : 40 and 80 : 20).![]()
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Affiliation(s)
- Ali Fattahi
- Medical Biology Research Center
- Kermanshah University of Medical Sciences
- Kermanshah
- Iran
| | - Nadia Karimi
- Medical Biology Research Center
- Kermanshah University of Medical Sciences
- Kermanshah
- Iran
- Department of Chemistry
| | - Fatemeh Rahmati
- Student Research Committee
- School of Pharmacy
- Kermanshah University of Medical Sciences
- Kermanshah
- Iran
| | - Yalda Shokoohinia
- Pharmaceutical Sciences Research Center
- School of Pharmacy
- Kermanshah University of Medical Sciences
- Kermanshah
- Iran
| | - Komail Sadrjavadi
- Pharmaceutical Sciences Research Center
- School of Pharmacy
- Kermanshah University of Medical Sciences
- Kermanshah
- Iran
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16
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Harada A, Kataoka K. Polyion complex micelle formation from double-hydrophilic block copolymers composed of charged and non-charged segments in aqueous media. Polym J 2017. [DOI: 10.1038/pj.2017.67] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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17
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Bayati S, Bergquist KE, Zhu K, Nyström B, Skov Pedersen J, Galantini L, Schillén K. Mixed micelles of oppositely charged poly(N-isopropylacrylamide) diblock copolymers. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/polb.24403] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Solmaz Bayati
- Division of Physical Chemistry, Department of Chemistry; Lund University; P.O. Box 124 SE-221 00 Lund Sweden
| | - Karl-Erik Bergquist
- Center for Analysis and Synthesis; Department of Chemistry, Lund University; P.O. Box 124 SE-221 00 Lund Sweden
| | - Kaizheng Zhu
- Department of Chemistry; University of Oslo; Postboks 1033 0315 Blindern Oslo Norway
| | - Bo Nyström
- Department of Chemistry; University of Oslo; Postboks 1033 0315 Blindern Oslo Norway
| | - Jan Skov Pedersen
- Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO); Aarhus University; Gustav Wieds Vej 14 8000 Aarhus C Denmark
| | - Luciano Galantini
- Department of Chemistry; “La Sapienza” University of Rome; P. le A. Moro 5 00185 Rome Italy
| | - Karin Schillén
- Division of Physical Chemistry, Department of Chemistry; Lund University; P.O. Box 124 SE-221 00 Lund Sweden
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18
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Alami-Milani M, Zakeri-Milani P, Valizadeh H, Salehi R, Salatin S, Naderinia A, Jelvehgari M. Novel Pentablock Copolymers as Thermosensitive Self-Assembling Micelles for Ocular Drug Delivery. Adv Pharm Bull 2017; 7:11-20. [PMID: 28507933 PMCID: PMC5426723 DOI: 10.15171/apb.2017.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Revised: 01/18/2017] [Accepted: 01/25/2017] [Indexed: 01/24/2023] Open
Abstract
Many studies have focused on how drugs are formulated in the sol state at room temperature leading to the formation of in situ gel at eye temperature to provide a controlled drug release. Stimuli-responsive block copolymer hydrogels possess several advantages including uncomplicated drug formulation and ease of application, no organic solvent, protective environment for drugs, site-specificity, prolonged and localized drug delivery, lower systemic toxicity, and capability to deliver both hydrophobic and hydrophilic drugs. Self-assembling block copolymers (such as diblock, triblock, and pentablock copolymers) with large solubility variation between hydrophilic and hydrophobic segments are capable of making temperature-dependent micellar assembles, and with further increase in the temperature, of jellifying due to micellar aggregation. In general, molecular weight, hydrophobicity, and block arrangement have a significant effect on polymer crystallinity, micelle size, and in vitro drug release profile. The limitations of creature triblock copolymers as initial burst release can be largely avoided using micelles made of pentablock copolymers. Moreover, formulations based on pentablock copolymers can sustain drug release for a longer time. The present study aims to provide a concise overview of the initial and recent progresses in the design of hydrogel-based ocular drug delivery systems.
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Affiliation(s)
- Mitra Alami-Milani
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Student Research Committee, Tabriz University of Medical Science, Tabriz, Iran
| | - Parvin Zakeri-Milani
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hadi Valizadeh
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Roya Salehi
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Science, Tabriz, Iran
| | - Sara Salatin
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Science, Tabriz, Iran
| | - Ali Naderinia
- Department of Mechanical Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Mitra Jelvehgari
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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19
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Fernandez-Villamarin M, Sousa-Herves A, Porto S, Guldris N, Martínez-Costas J, Riguera R, Fernandez-Megia E. A dendrimer–hydrophobic interaction synergy improves the stability of polyion complex micelles. Polym Chem 2017. [DOI: 10.1039/c7py00304h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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20
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Affiliation(s)
| | - Matthew V. Tirrell
- Institute for Molecular Engineering; The University of Chicago; Chicago IL USA
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21
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Wen H, Zhou J, Pan W, Li Z, Liang D. Assembly and Reassembly of Polyelectrolyte Complex Formed by Poly(ethylene glycol)-block-poly(glutamate sodium) and S5R4 Peptide. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00746] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hao Wen
- Beijing National
Laboratory for Molecular Sciences and the Key Laboratory of Polymer
Chemistry and Physics of Ministry of Education, College of Chemistry
and Molecular Engineering, Peking University, Beijing, China 100871
| | - Jihan Zhou
- Beijing National
Laboratory for Molecular Sciences and the Key Laboratory of Polymer
Chemistry and Physics of Ministry of Education, College of Chemistry
and Molecular Engineering, Peking University, Beijing, China 100871
| | - Wei Pan
- Beijing National
Laboratory for Molecular Sciences and the Key Laboratory of Polymer
Chemistry and Physics of Ministry of Education, College of Chemistry
and Molecular Engineering, Peking University, Beijing, China 100871
| | - Zhibo Li
- School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong, China 266061
| | - Dehai Liang
- Beijing National
Laboratory for Molecular Sciences and the Key Laboratory of Polymer
Chemistry and Physics of Ministry of Education, College of Chemistry
and Molecular Engineering, Peking University, Beijing, China 100871
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22
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Takahashi R, Sato T, Terao K, Yusa SI. Reversible Vesicle–Spherical Micelle Transition in a Polyion Complex Micellar System Induced by Changing the Mixing Ratio of Copolymer Components. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00308] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Rintaro Takahashi
- Department
of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Takahiro Sato
- Department
of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Ken Terao
- Department
of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Shin-ichi Yusa
- Department
of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
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23
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Gröschel AH, Müller AHE. Self-assembly concepts for multicompartment nanostructures. NANOSCALE 2015; 7:11841-76. [PMID: 26123217 DOI: 10.1039/c5nr02448j] [Citation(s) in RCA: 236] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Compartmentalization is ubiquitous to many biological and artificial systems, be it for the separate storage of incompatible matter or to isolate transport processes. Advancements in the synthesis of sequential block copolymers offer a variety of tools to replicate natural design principles with tailor-made soft matter for the precise spatial separation of functionalities on multiple length scales. Here, we review recent trends in the self-assembly of amphiphilic block copolymers to multicompartment nanostructures (MCNs) under (semi-)dilute conditions, with special emphasis on ABC triblock terpolymers. The intrinsic immiscibility of connected blocks induces short-range repulsion into discrete nano-domains stabilized by a third, soluble block or molecular additive. Polymer blocks can be synthesized from an arsenal of functional monomers directing self-assembly through packing frustration or response to various fields. The mobility in solution further allows the manipulation of self-assembly processes into specific directions by clever choice of environmental conditions. This review focuses on practical concepts that direct self-assembly into predictable nanostructures, while narrowing particle dispersity with respect to size, shape and internal morphology. The growing understanding of underlying self-assembly mechanisms expands the number of experimental concepts providing the means to target and manipulate progressively complex superstructures.
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Affiliation(s)
- André H Gröschel
- Molecular Materials, Department of Applied Physics, Aalto University School of Science, FIN-00076 Aalto, Espoo, Finland.
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24
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Wen H, Pan W, Zhou J, Li Z, Liang D. Complete dissociation and reassembly behavior as studied by using poly(ethylene glycol)-block-poly(glutamate sodium) and kanamycin A. SOFT MATTER 2015; 11:1930-1936. [PMID: 25614417 DOI: 10.1039/c4sm02656j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Kanamycin A, an amino modified sugar, can interact with poly(ethylene glycol)-block-poly(glutamate sodium) (PEG114-PGlu64) via electrostatic interactions (with PGlu) and hydrogen bonding (with PEG). The interplay of these two forces determines the assembly process and the resulting structure. In deionized water, kanamycin A and PEG114-PGlu64 form a spherical structure at [+]/[-] = 3.5. This structure dissociates instantly and completely in the presence of 30 mM NaCl. However, a new structure is reassembled in about 2 hours. A similar phenomenon is observed when the buffer pH is increased from 7.8 to 8.3. We attribute the distinct dissociation/reassembly process to the reestablishment of the balance between electrostatic interactions and hydrogen bonding. The dissociation/reassembly process in response to environmental changes offers a novel approach to release the loaded cargo in a controlled manner.
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Affiliation(s)
- Hao Wen
- Beijing National Laboratory for Molecular Sciences and the Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P.R. China.
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25
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Krogstad DV, Lynd NA, Miyajima D, Gopez J, Hawker CJ, Kramer EJ, Tirrell MV. Structural Evolution of Polyelectrolyte Complex Core Micelles and Ordered-Phase Bulk Materials. Macromolecules 2014. [DOI: 10.1021/ma5017852] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
| | | | | | | | | | | | - Matthew V. Tirrell
- Institute
for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
- Argonne National Laboratory, Lemont, Illinois 60439, United States
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26
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Emami J, Rezazadeh M, Rostami M, Hassanzadeh F, Sadeghi H, Mostafavi A, Minaiyan M, Lavasanifar A. Co-delivery of paclitaxel and α-tocopherol succinate by novel chitosan-based polymeric micelles for improving micellar stability and efficacious combination therapy. Drug Dev Ind Pharm 2014; 41:1137-47. [PMID: 25019502 DOI: 10.3109/03639045.2014.935390] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The aim of this study was to develop chitosan derivative polymeric micelles for co-delivery of paclitaxel (PTX) and α-tocopherol succinate (α-TS) to the cancer cells to improve the therapeutic efficiency and reduce side effects of PTX. In this study, amphiphilic tocopheryl succinate-grafted chitosan oligosaccharide was synthesized and physically loaded by PTX and α-TS with entrapment efficiency of 67.9% and 73.2%, respectively. Physical incorporation of α-TS into the micelles increased the hydrophobic interaction between PTX and the micelles core, which improved micelle stability, reduced the micelle size and also sustained the PTX release from the micelles. The mean particle size and zeta potential of αTS/PTX-loaded micelles were about 133 nm and +25.2 mV, respectively, and PTX release was completed during 6-9 d from the micelles. Furthermore, the cytotoxicity of α-TS/PTX-loaded micelles against human ovarian cancer cell line cancer cell in vitro was higher than that of PTX-loaded micelles and the free drug solution. Half maximal inhibitory concentration values of PTX after 48-h exposure of the cells to the PTX-loaded micelles modified and unmodified with α-TS were 110 and 188 ng/ml, respectively.
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27
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Kowalczuk A, Trzcinska R, Trzebicka B, Müller AH, Dworak A, Tsvetanov CB. Loading of polymer nanocarriers: Factors, mechanisms and applications. Prog Polym Sci 2014. [DOI: 10.1016/j.progpolymsci.2013.10.004] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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28
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Kim CW, Toita R, Kang JH, Li K, Lee EK, Zhao GX, Funamoto D, Nobori T, Nakamura Y, Mori T, Niidome T, Katayama Y. Stabilization of cancer-specific gene carrier via hydrophobic interaction for a clear-cut response to cancer signaling. J Control Release 2013; 170:469-76. [DOI: 10.1016/j.jconrel.2013.06.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 05/09/2013] [Accepted: 06/03/2013] [Indexed: 12/14/2022]
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29
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Polymeric micelles, a promising drug delivery system to enhance bioavailability of poorly water-soluble drugs. JOURNAL OF DRUG DELIVERY 2013; 2013:340315. [PMID: 23936656 PMCID: PMC3712247 DOI: 10.1155/2013/340315] [Citation(s) in RCA: 267] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 06/04/2013] [Accepted: 06/11/2013] [Indexed: 01/27/2023]
Abstract
Oral administration is the most commonly used and readily accepted form of drug delivery; however, it is find that many drugs are difficult to attain enough bioavailability when administered via this route. Polymeric micelles (PMs) can overcome some limitations of the oral delivery acting as carriers able to enhance drug absorption, by providing (1) protection of the loaded drug from the harsh environment of the GI tract, (2) release of the drug in a controlled manner at target sites, (3) prolongation of the residence time in the gut by mucoadhesion, and (4) inhibition of efflux pumps to improve the drug accumulation. To explain the mechanisms for enhancement of oral bioavailability, we discussed the special stability of PMs, the controlled release properties of pH-sensitive PMs, the prolongation of residence time with mucoadhesive PMs, and the P-gp inhibitors commonly used in PMs, respectively. The primary purpose of this paper is to illustrate the potential of PMs for delivery of poorly water-soluble drugs with bioavailability being well maintained.
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30
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Krogstad DV, Lynd NA, Choi SH, Spruell JM, Hawker CJ, Kramer EJ, Tirrell MV. Effects of Polymer and Salt Concentration on the Structure and Properties of Triblock Copolymer Coacervate Hydrogels. Macromolecules 2013. [DOI: 10.1021/ma302299r] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | | | - Matthew V. Tirrell
- Institute for Molecular
Engineering, University of Chicago, 5747
South Ellis Avenue, Chicago,
Illinois 60637, United States
- Argonne National Laboratory, Argonne,
Illinois 60439, United States
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31
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Attia ABE, Yang C, Tan JPK, Gao S, Williams DF, Hedrick JL, Yang YY. The effect of kinetic stability on biodistribution and anti-tumor efficacy of drug-loaded biodegradable polymeric micelles. Biomaterials 2013; 34:3132-40. [PMID: 23380357 DOI: 10.1016/j.biomaterials.2013.01.042] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Accepted: 01/07/2013] [Indexed: 11/19/2022]
Abstract
This study was aimed to investigate the effect of kinetic stability on biodistribution and antitumor efficacy of drug-loaded biodegradable polymeric micelles. Four diblock copolymers of acid- and urea-functionalized polycarbonate (i.e. PAC and PUC) and poly(ethylene glycol) (PEG) with the same polycarbonate length and two different PEG molecular weights (Mn: 5 kDa and 10 kDa), i.e. 5K PEG-PAC, 10K PEG-PAC, 5K PEG-PUC and 10K PEG-PUC, were synthesized via organocatalytic living ring-opening polymerization using methoxy PEG as a macroinitiator. These polymers were employed to prepare 5K PEG-PAC/5K PEG-PUC and 10K PEG-PAC/10K PEG-PAC mixed micelles via urea-acid hydrogen bonding. An amine group-containing anticancer drug, doxorubicin (DOX) was loaded into the mixed micelles via a self-assembly process. DOX-loaded 5K and 10K PEG mixed micelles had particle sizes of 66 and 87 nm respectively with narrow size distribution (polydispersity index: 0.12), and DOX loading levels were 28.9 and 22.8% in weight. DOX-loaded 5K PEG mixed micelles had greater kinetic stability than DOX-loaded 10K PEG mixed micelles due to stronger hydrophobicity of 5K PEG block copolymers. The results of in vitro release studies showed that DOX release was sustained without obvious initial burst release. The DOX-loaded mixed micelles effectively suppressed the proliferation of HepG2 and 4T1 cells. The in vivo studies conducted in a 4T1 mouse breast cancer model demonstrated that the mixed micelles were preferably transported to the tumor with the 5K PEG mixed micelles accumulating in the tumor more rapidly to a larger extent than 10K PEG mixed micelles, and DOX-loaded 5K PEG mixed micelles with greater kinetic stability inhibited tumor growth more effectively than free DOX and DOX-loaded 10K PEG mixed micelles without causing significant body weight loss or cardiotoxicity. The 5K PEG mixed micelles with sizes below 100 nm and narrow size distribution as well as excellent kinetic stability holds great potential as a delivery carrier for amine group-containing anticancer drugs.
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Affiliation(s)
- Amalina B Ebrahim Attia
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore 138669, Singapore
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32
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van der Kooij HM, Spruijt E, Voets IK, Fokkink R, Cohen Stuart MA, van der Gucht J. On the stability and morphology of complex coacervate core micelles: from spherical to wormlike micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:14180-14191. [PMID: 22978707 DOI: 10.1021/la303211b] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We present a systematic study of the stability and morphology of complex coacervate core micelles (C3Ms) formed from poly(acrylic acid) (PAA) and poly(N-methyl-2-vinylpyridinium)-b-poly(ethylene oxide) (PM2VP-b-PEO). We use polarized and depolarized dynamic and static light scattering, combined with small-angle X-ray scattering, to investigate how the polymer chain length and salt concentration affect the stability, size, and shape of these micelles. We show that C3Ms are formed in aqueous solution below a critical salt concentration, which increases considerably with increasing PAA and PM2VP length and levels off for long chains. This trend is in good agreement with a mean-field model of polyelectrolyte complexation based on the Voorn-Overbeek theory. In addition, we find that salt induces morphological changes in C3Ms when the PAA homopolymer is sufficiently short: from spherical micelles with a diameter of several tens of nanometers at low salt concentration to wormlike micelles with a contour length of several hundreds of nanometers just before the critical salt concentration. By contrast, C3Ms of long PAA homopolymers remain spherical upon addition of salt and shrink slightly. A critical review of existing literature on other C3Ms reveals that the transition from spherical to wormlike micelles is probably a general phenomenon, which can be rationalized in terms of a classical packing parameter for amphiphiles.
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Affiliation(s)
- Hanne M van der Kooij
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands.
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33
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Khan M, Ong ZY, Wiradharma N, Attia ABE, Yang YY. Advanced materials for co-delivery of drugs and genes in cancer therapy. Adv Healthc Mater 2012. [PMID: 23184770 DOI: 10.1002/adhm.201200109] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
With cancer being the major cause of mortality worldwide, the continued development of safe and efficacious treatments is warranted. A better understanding of the molecular mechanism and genetic basis of tumor initiation and progression, coupled with advances in chemistry, molecular biology and engineering have led to discovery of a wide range of therapeutic agents for cancer therapy. However, multidrug-resistance, which is mainly caused by malfunction of genes, has become a major problem in chemotherapy. To overcome this problem, the simultaneous delivery of genes to cancer cells has been proposed to correct the malfunctioned genes to sensitize the cells to chemotherapeutics. This progress report summarizes key advances in drug and gene delivery with focus on the development of polymers, peptides, liposomes and inorganic materials as nanocarriers for co-delivery of small molecular drugs and macromolecular genes or proteins. In addition, challenges and future perspectives in the design of nanocarriers for the co-delivery of therapeutic drugs and genes are discussed.
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Affiliation(s)
- Majad Khan
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore 138669
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34
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Liu Y, Li C, Wang HY, Zhang XZ, Zhuo RX. Synthesis of thermo- and pH-sensitive polyion complex micelles for fluorescent imaging. Chemistry 2012; 18:2297-304. [PMID: 22250041 DOI: 10.1002/chem.201102704] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Indexed: 11/10/2022]
Abstract
Two thermo- and pH-sensitive polypeptide-based copolymers, poly(N-isopropylacrylamide-co-N-hydroxymethylacrylamide)-b-poly(L-lysine) (P(NIPAAm-co-HMAAm)-b-PLL, P1) and poly(N-isopropylacrylamide-co-N-hydroxymethylacrylamide)-b-poly(glutamic acid) (P(NIPAAm-co-HMAAm)-b-PGA, P2), have been designed and synthesized by the ring-opening anionic polymerization of N-carboxyanhydrides (NCA) with amino-terminated P(NIPAAm-co-HMAAm). It was found that the block copolymers exhibit good biocompatibility and low toxicity. As a result of electrostatic interactions between the positively charged PLL and negatively charged PGA, P1 and P2 formed polyion complex (PIC) micelles consisting of polyelectrolyte complex cores and P(NIPAAm-co-HMAAm) shells in aqueous solution. The thermo- and pH-sensitivity of the PIC micelles were studied by UV/Vis spectrophotometry, dynamic light scattering (DLS), and transmission electron microscopy (TEM). Moreover, fluorescent PIC micelles were achieved by introducing two fluorescent molecules with different colors. Photographs and confocal laser scanning microscopy (CLSM) showed that the fluorescence-labeled PIC micelles exhibit thermo- and pH-dependent fluorescence, which may find wide applications in bioimaging in complicated microenvironments.
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Affiliation(s)
- Yun Liu
- Key Laboratory of Biomedical Polymers of the Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, PR China
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35
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Berret JF. Controlling electrostatic co-assembly using ion-containing copolymers: from surfactants to nanoparticles. Adv Colloid Interface Sci 2011; 167:38-48. [PMID: 21376298 DOI: 10.1016/j.cis.2011.01.008] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2010] [Revised: 01/27/2011] [Accepted: 01/27/2011] [Indexed: 10/18/2022]
Abstract
In this review, we address the issue of the electrostatic complexation between charged-neutral diblock copolymers and oppositely charged nanocolloids. We show that nanocolloids such as surfactant micelles and iron oxide magnetic nanoparticles share similar properties when mixed with charged-neutral diblocks. Above a critical charge ratio, core-shell hierarchical structures form spontaneously under direct mixing conditions. The core-shell structures are identified by a combination of small-angle scattering techniques and transmission electron microscopy. The formation of multi-level objects is driven by the electrostatic attraction between opposite charges and by the release of the condensed counterions. Alternative mixing processes inspired from molecular biology are also described. The protocols applied here consist in screening the electrostatic interactions of the mixed dispersions, and then removing the salt progressively as an example by dialysis. With these techniques, the oppositely charged species are intimately mixed before they can interact, and their association is monitored by the desalting kinetics. As a result, sphere- and wire-like aggregates with remarkable superparamagnetic and stability properties are obtained. These findings are discussed in the light of a new paradigm which deals with the possibility to use inorganic nanoparticles as building blocks for the design and fabrication of supracolloidal assemblies with enhanced functionalities.
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Koga H, Toita R, Mori T, Tomiyama T, Kang JH, Niidome T, Katayama Y. Fluorescent Nanoparticles Consisting of Lipopeptides and Fluorescein-Modified Polyanions for Monitoring of Protein Kinase Activity. Bioconjug Chem 2011; 22:1526-34. [DOI: 10.1021/bc200066w] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | - Yoshiki Katayama
- Center for Advanced Medical Innovation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
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Ebrahim Attia AB, Ong ZY, Hedrick JL, Lee PP, Ee PLR, Hammond PT, Yang YY. Mixed micelles self-assembled from block copolymers for drug delivery. Curr Opin Colloid Interface Sci 2011. [DOI: 10.1016/j.cocis.2010.10.003] [Citation(s) in RCA: 240] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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38
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Hunt JN, Feldman KE, Lynd NA, Deek J, Campos LM, Spruell JM, Hernandez BM, Kramer EJ, Hawker CJ. Tunable, high modulus hydrogels driven by ionic coacervation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:2327-31. [PMID: 21491513 DOI: 10.1002/adma.201004230] [Citation(s) in RCA: 262] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Revised: 01/11/2011] [Indexed: 05/15/2023]
Affiliation(s)
- Jasmine N Hunt
- Materials Department, Department of Chemistry & Biochemistry and the Materials Research Laboratory, University of California-Santa Barbara, CA 93106, USA
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Yang H, Jia L, Zhu C, Di-Cicco A, Levy D, Albouy PA, Li MH, Keller P. Amphiphilic Poly(ethylene oxide)-block-poly(butadiene-graft-liquid crystal) Copolymers: Synthesis and Self-Assembly in Water. Macromolecules 2010. [DOI: 10.1021/ma100921s] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Hong Yang
- Institut Curie, Centre de Recherche, CNRS UMR 168, Université Pierre et Marie Curie 26 rue d’Ulm 75248 Paris Cedex 05, France
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Lin Jia
- Institut Curie, Centre de Recherche, CNRS UMR 168, Université Pierre et Marie Curie 26 rue d’Ulm 75248 Paris Cedex 05, France
| | - ChenHui Zhu
- Department of Physics, University of Colorado, 390 UCB, Boulder Colorado 80309-0390, United States
| | - Aurelie Di-Cicco
- Institut Curie, Centre de Recherche, CNRS UMR 168, Université Pierre et Marie Curie 26 rue d’Ulm 75248 Paris Cedex 05, France
- Cell and tissue imaging (Pict-IBiSA), Institut Curie, Paris, France
| | - Daniel Levy
- Institut Curie, Centre de Recherche, CNRS UMR 168, Université Pierre et Marie Curie 26 rue d’Ulm 75248 Paris Cedex 05, France
- Cell and tissue imaging (Pict-IBiSA), Institut Curie, Paris, France
| | - Pierre-Antoine Albouy
- Université Paris-Sud, CNRS UMR 8502, Laboratoire de Physique des Solides, 91405 Orsay cedex, France
| | - Min-Hui Li
- Institut Curie, Centre de Recherche, CNRS UMR 168, Université Pierre et Marie Curie 26 rue d’Ulm 75248 Paris Cedex 05, France
| | - Patrick Keller
- Institut Curie, Centre de Recherche, CNRS UMR 168, Université Pierre et Marie Curie 26 rue d’Ulm 75248 Paris Cedex 05, France
- Department of Chemistry and Biochemistry, University of Colorado, Boulder Colorado 80309-0215, United States
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Courtois J, Berret JF. Probing oppositely charged surfactant and copolymer interactions by isothermal titration microcalorimetry. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:11750-11758. [PMID: 20557117 DOI: 10.1021/la101475x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The complexation between charge-neutral block copolymers and oppositely charged surfactants was investigated by light scattering experiments and by isothermal titration calorimetry (ITC). The copolymer was poly(sodium acrylate)-b-poly(acrylamide) and the surfactant dodecyltrimethylammonium bromide (DTAB). In a previous report, we had shown that the copolymers and the surfactants coassembled spontaneously into colloidal complexes. Depending on the charge ratio, the complexes were either single surfactant micelles decorated by copolymers or core-shell hierarchical structures. ITC was performed in order to investigate the thermodynamics of the complex formation. Titrations of copolymers by surfactants and of surfactants by copolymers revealed that the electrostatic coassembly was an endothermic reaction, suggesting a process dominated by the entropy of the counterions. Here, we found that the thermodynamic quantities associated with the reaction depended on the mixing order. When surfactants were added stepwise to copolymers, the titration was associated with the formation of single micelles decorated by a unique polymer. Above a critical charge ratio, the micelles rearranged themselves into 100 nm colloidal complexes in a collective process which displayed the following features: (i) the process was very slow as compared to the time scale of Brownian diffusion, (ii) the thermodynamic signature was a endothermic peak, and (iii) the stoichiometry between the positive and negative charges was modified from n = 0.48 (single micelles) to 0.75 (core-shell complexes). When copolymers were added stepwise to surfactants, the titration resulted in the formation of the core-shell aggregates only. In both experiments, the amount of polyelectrolytes needed for complex formation exceeded the number required to compensate the net micellar charge, confirming the evidence of overcharging in the complex formation.
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Affiliation(s)
- J Courtois
- Matière et Systèmes Complexes, UMR 7057 CNRS Université Denis Diderot Paris-VII, 75205 Paris, France
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41
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Chan JW, Shin J, Hoyle CE, Bowman CN, Lowe AB. Synthesis, Thiol−Yne “Click” Photopolymerization, and Physical Properties of Networks Derived from Novel Multifunctional Alkynes. Macromolecules 2010. [DOI: 10.1021/ma1004452] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Justin W. Chan
- School of Polymers and High Performance Materials, 118 College Drive No. 10076, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-10076
| | - Jungwhan Shin
- School of Polymers and High Performance Materials, 118 College Drive No. 10076, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-10076
| | - Charles E. Hoyle
- School of Polymers and High Performance Materials, 118 College Drive No. 10076, The University of Southern Mississippi, Hattiesburg, Mississippi 39406-10076
| | - Christopher N. Bowman
- Department of Chemical and Biochemical Engineering, University of Colorado, Boulder, Colorado 80309-0424
| | - Andrew B. Lowe
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, The University of New South Wales, Kensington, Sydney 2052, NSW, Australia
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Affiliation(s)
- Charles E Hoyle
- School of Polymers and High Performance Materials, University of Southern Mississippi, Hattiesburg, MS 39406-0001, USA
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Akagi T, Watanabe K, Kim H, Akashi M. Stabilization of polyion complex nanoparticles composed of poly(amino acid) using hydrophobic interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:2406-13. [PMID: 20017513 DOI: 10.1021/la902868g] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We report the design and preparation of polyion complex (PIC) nanoparticles composed of anionic hydrophobically modified and cationic poly(amino acid) and the effect of hydrophobic interactions on the stability of these PIC nanoparticles under physiological conditions. We selected poly(gamma-glutamic acid) (gamma-PGA) as the biodegradable anionic polymer and poly(epsilon-lysine) (epsilon-PL) as the cationic polymer. Amphiphilic graft copolymers consisting of gamma-PGA and L-phenylalanine (L-Phe) as the hydrophobic side chain were synthesized by grafting L-Phe to gamma-PGA. The PIC nanoparticles were prepared by mixing gamma-PGA-graft-L-Phe (gamma-PGA-Phe) with epsilon-PL in phosphate buffered saline (PBS). The formation and stability of the PIC nanoparticles were investigated by dynamic light scattering (DLS) measurements. Monomodal anionic PIC nanoparticles were obtained using nonstoichiometric mixing ratios. When unmodified gamma-PGA was mixed with epsilon-PL in PBS, the formation of PIC nanoparticles was observed. However, within a few hours after the preparation, the PIC nanoparticles dissolved in the PBS. In contrast, gamma-PGA-Phe/epsilon-PL nanoparticles showed high stability for a prolonged period of time in PBS and over a wide range of pH values. The stability and size of the PIC nanoparticles depended on the gamma-PGA-Phe/epsilon-PL mixing ratio and the hydrophobicity of the gamma-PGA. The improved stability of the PIC nanoparticles was attributed to the formation of hydrophobic domains in the core of the nanoparticles. The fabrication of PIC nanoparticles using hydrophobic interactions was very useful for the stabilization of the nanoparticles. These results will provide a novel concept in the design of carrier systems composed of PIC. It is expected that the gamma-PGA-Phe/epsilon-PL nanoparticles will have great potential as multifunctional carriers for pharmaceutical and biomedical applications, such as drug and vaccine delivery systems.
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Affiliation(s)
- Takami Akagi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, Japan
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De Santis S, Diana Ladogana R, Diociaiuti M, Masci G. Pegylated and Thermosensitive Polyion Complex Micelles by Self-Assembly of Two Oppositely and Permanently Charged Diblock Copolymers. Macromolecules 2010. [DOI: 10.1021/ma9026542] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Serena De Santis
- Department of Chemistry, University of Rome “La Sapienza”, P. le A. Moro 5, 00185 Rome, Italy
| | - Rita Diana Ladogana
- Department of Chemistry, University of Rome “La Sapienza”, P. le A. Moro 5, 00185 Rome, Italy
| | - Marco Diociaiuti
- Dipartimento di Tecnologie e Salute, Istituto Superiore di Sanità, Viale R. Elena 299, 00161, Roma, Italy
| | - Giancarlo Masci
- Department of Chemistry, University of Rome “La Sapienza”, P. le A. Moro 5, 00185 Rome, Italy
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46
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Voets IK, Leermakers FA, de Keizer A, Charlaganov M, Stuart MAC. Co-assembly Towards Janus Micelles. SELF ORGANIZED NANOSTRUCTURES OF AMPHIPHILIC BLOCK COPOLYMERS I 2010. [DOI: 10.1007/12_2010_100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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47
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Lowe AB, Hoyle CE, Bowman CN. Thiol-yne click chemistry: A powerful and versatile methodology for materials synthesis. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b917102a] [Citation(s) in RCA: 409] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Lindhoud S, Stuart MAC, Norde W, Leermakers FAM. Self-consistent-field calculations of proteinlike incorporations in polyelectrolyte complex micelles. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2009; 80:051406. [PMID: 20364984 DOI: 10.1103/physreve.80.051406] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Indexed: 05/29/2023]
Abstract
Self-consistent field theory is applied to model the structure and stability of polyelectrolyte complex micelles with incorporated protein (molten globule) molecules in the core. The electrostatic interactions that drive the micelle formation are mimicked by nearest-neighbor interactions using Flory-Huggins chi parameters. The strong qualitative comparison with experimental data proves that the Flory-Huggins approach is reasonable. The free energy of insertion of a proteinlike molecule into the micelle is nonmonotonic: there is (i) a small repulsion when the protein is inside the corona; the height of the insertion barrier is determined by the local osmotic pressure and the elastic deformation of the core, (ii) a local minimum occurs when the protein molecule is at the core-corona interface; the depth (a few kBT' s) is related to the interfacial tension at the core-corona interface and (iii) a steep repulsion (several kBT ) when part of the protein molecule is dragged into the core. Hence, the protein molecules reside preferentially at the core-corona interface and the absorption as well as the release of the protein molecules has annealed rather than quenched characteristics. Upon an increase of the ionic strength it is possible to reach a critical micellization ionic (CMI) strength. With increasing ionic strength the aggregation numbers decrease strongly and only few proteins remain associated with the micelles near the CMI.
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Affiliation(s)
- Saskia Lindhoud
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands.
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Voets IK, Keizer AD, Leermakers FA, Debuigne A, Jérôme R, Detrembleur C, Cohen Stuart MA. Electrostatic hierarchical co-assembly in aqueous solutions of two oppositely charged double hydrophilic diblock copolymers. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2009.06.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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50
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Lotti L, Coiai S, Ciardelli F, Galimberti M, Passaglia E. Thiol-Ene Radical Addition of L
-Cysteine Derivatives to Low Molecular Weight Polybutadiene. MACROMOL CHEM PHYS 2009. [DOI: 10.1002/macp.200900164] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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