1
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Pavón C, Benetti EM, Lorandi F. Polymer Brushes on Nanoparticles for Controlling the Interaction with Protein-Rich Physiological Media. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:11843-11857. [PMID: 38787578 DOI: 10.1021/acs.langmuir.4c00956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
The interaction of nanoparticles (NPs) with biological environments triggers the formation of a protein corona (PC), which significantly influences their behavior in vivo. This review explores the evolving understanding of PC formation, focusing on the opportunity for decreasing or suppressing protein-NP interactions by macromolecular engineering of NP shells. The functionalization of NPs with a dense, hydrated polymer brush shell is a powerful strategy for imparting stealth properties in order to elude recognition by the immune system. While poly(ethylene glycol) (PEG) has been extensively used for this purpose, concerns regarding its stability and immunogenicity have prompted the exploration of alternative polymers. The stealth properties of brush shells can be enhanced by tailoring functionalities and structural parameters, including the molar mass, grafting density, and polymer topology. Determining correlations between these parameters and biopassivity has enabled us to obtain polymer-grafted NPs with high colloidal stability and prolonged circulation time in biological media.
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Affiliation(s)
- Carlos Pavón
- Laboratory for Macromolecular and Organic Chemistry (MOC), Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Edmondo M Benetti
- Laboratory for Macromolecular and Organic Chemistry (MOC), Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Francesca Lorandi
- Laboratory for Macromolecular and Organic Chemistry (MOC), Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
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2
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Berret JF, Graillot A. Versatile Coating Platform for Metal Oxide Nanoparticles: Applications to Materials and Biological Science. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5323-5338. [PMID: 35483044 DOI: 10.1021/acs.langmuir.2c00338] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In this feature article, we provide an overview of our research on statistical copolymers as a coating material for metal oxide nanoparticles and surfaces. These copolymers contain functional groups enabling noncovalent binding to oxide surfaces and poly(ethylene glycol) (PEG) polymers for colloidal stability and stealthiness. The functional groups are organic derivatives of phosphorous acid compounds R-H2PO3, also known as phosphonic acids that have been screened for their strong affinity to metals and for their multidentate binding ability. Herein we develop a polymer-based coating platform that shares features with the self-assembled monolayer (SAM) and layer-by-layer (L-b-L) deposition techniques. The milestones of this endeavor are the synthesis of PEG-based copolymers containing multiple phosphonic acid groups, the implementation of simple protocols combining versatility with high particle production yields, and the experimental evidence of the colloidal stability of the coated particles. As a demonstration, coating studies are conducted on cerium (CeO2), iron (γ-Fe2O3), aluminum (Al2O3), and titanium (TiO2) oxides of different sizes and morphologies. We finally discuss applications in the domain of nanomaterials and nanomedicine. We evaluate the beneficial effects of coatings on redispersible nanopowders, contrast agents for in vitro/vivo assays, and stimuli-responsive particles.
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Affiliation(s)
| | - Alain Graillot
- Specific Polymers, ZAC Via Domitia, 150 Avenue des Cocardières, 34160 Castries, France
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3
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Al‐Qadri AA, Nasser GA, Galadima A, Muraza O. A Review on the Conversion of Synthetic Gas to LPG over Hybrid Nanostructure Zeolites Catalysts. ChemistrySelect 2022. [DOI: 10.1002/slct.202200042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ali. A. Al‐Qadri
- Department of Chemical Engineering King Fahd University of Petroleum and Minerals Dhahran, 31261 Saudi Arabia
- Galal A. Nasser Dr. Oki Muraza Interdisciplinary Research Center for Hydrogen and Energy Storage King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia
| | - Galal A. Nasser
- Galal A. Nasser Dr. Oki Muraza Interdisciplinary Research Center for Hydrogen and Energy Storage King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia
| | - Ahmad Galadima
- Office of the Vice Chancellor Federal University P.M.B. 1001 Gusau Zamfara State Nigeria
| | - Oki Muraza
- Galal A. Nasser Dr. Oki Muraza Interdisciplinary Research Center for Hydrogen and Energy Storage King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia
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4
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Martel A, Gabel F. Time-resolved small-angle neutron scattering (TR-SANS) for structural biology of dynamic systems: Principles, recent developments, and practical guidelines. Methods Enzymol 2022; 677:263-290. [DOI: 10.1016/bs.mie.2022.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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5
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6
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Aboudzadeh MA, Kruse J, Sanromán Iglesias M, Cangialosi D, Alegria A, Grzelczak M, Barroso-Bujans F. Gold nanoparticles endowed with low-temperature colloidal stability by cyclic polyethylene glycol in ethanol. SOFT MATTER 2021; 17:7792-7801. [PMID: 34368823 DOI: 10.1039/d1sm00720c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The colloidal stability of metal nanoparticles is tremendously dependent on the thermal behavior of polymer brushes. Neat polyethylene glycol (PEG) presents an unconventional upper critical solution temperature in ethanol, where phase segregation and crystallization coexist. This thermal behavior translated to a PEG brush has serious consequences on the colloidal stability in ethanol of gold nanoparticles (AuNPs) modified with PEG brushes upon cooling. We observed that AuNPs (13 nm diameter) stabilized with conventional linear PEG brushes (Mn = 6 and 11 kg mol-1) in ethanol suffer from reversible phase separation upon a temperature drop over the course of a few hours. However, the use of a polymer brush with cyclic topology as a stabilizer prevents sedimentation, ensuring the colloidal stability in ethanol at -25 °C for, at least, four months. We postulate that temperature-driven collapse of chain brushes promotes the interpenetration of linear chains, causing progressive AuNP sedimentation, a process that is unfavorable for cyclic polymer brushes whose topology prevents chain interpenetration. This study reinforces the notion about the importance of polymer topology on the colloidal stability of AuNPs.
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Affiliation(s)
- M Ali Aboudzadeh
- Donostia International Physics Center (DIPC), Paseo Manuel Lardizábal 4, 20018 Donostia-San Sebastián, Spain.
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7
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Flemming P, Münch AS, Fery A, Uhlmann P. Constrained thermoresponsive polymers - new insights into fundamentals and applications. Beilstein J Org Chem 2021; 17:2123-2163. [PMID: 34476018 PMCID: PMC8381851 DOI: 10.3762/bjoc.17.138] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 08/10/2021] [Indexed: 12/15/2022] Open
Abstract
In the last decades, numerous stimuli-responsive polymers have been developed and investigated regarding their switching properties. In particular, thermoresponsive polymers, which form a miscibility gap with the ambient solvent with a lower or upper critical demixing point depending on the temperature, have been intensively studied in solution. For the application of such polymers in novel sensors, drug delivery systems or as multifunctional coatings, they typically have to be transferred into specific arrangements, such as micelles, polymer films or grafted nanoparticles. However, it turns out that the thermodynamic concept for the phase transition of free polymer chains fails, when thermoresponsive polymers are assembled into such sterically confined architectures. Whereas many published studies focus on synthetic aspects as well as individual applications of thermoresponsive polymers, the underlying structure-property relationships governing the thermoresponse of sterically constrained assemblies, are still poorly understood. Furthermore, the clear majority of publications deals with polymers that exhibit a lower critical solution temperature (LCST) behavior, with PNIPAAM as their main representative. In contrast, for polymer arrangements with an upper critical solution temperature (UCST), there is only limited knowledge about preparation, application and precise physical understanding of the phase transition. This review article provides an overview about the current knowledge of thermoresponsive polymers with limited mobility focusing on UCST behavior and the possibilities for influencing their thermoresponsive switching characteristics. It comprises star polymers, micelles as well as polymer chains grafted to flat substrates and particulate inorganic surfaces. The elaboration of the physicochemical interplay between the architecture of the polymer assembly and the resulting thermoresponsive switching behavior will be in the foreground of this consideration.
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Affiliation(s)
- Patricia Flemming
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany
- Technische Universität Dresden, 01062 Dresden, Germany
| | - Alexander S Münch
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany
| | - Andreas Fery
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany
- Technische Universität Dresden, 01062 Dresden, Germany
| | - Petra Uhlmann
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany
- University of Nebraska-Lincoln, NE 68588, Lincoln, USA
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8
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Miclotte MJ, Lawrenson SB, Varlas S, Rashid B, Chapman E, O’Reilly RK. Tuning the Cloud-Point and Flocculation Temperature of Poly(2-(diethylamino)ethyl methacrylate)-Based Nanoparticles via a Postpolymerization Betainization Approach. ACS POLYMERS AU 2021; 1:47-58. [PMID: 34476421 PMCID: PMC8389998 DOI: 10.1021/acspolymersau.1c00010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Indexed: 11/28/2022]
Abstract
The ability to tune the behavior of temperature-responsive polymers and self-assembled nanostructures has attracted significant interest in recent years, particularly in regard to their use in biotechnological applications. Herein, well-defined poly(2-(diethylamino)ethyl methacrylate) (PDEAEMA)-based core-shell particles were prepared by RAFT-mediated emulsion polymerization, which displayed a lower-critical solution temperature (LCST) phase transition in aqueous media. The tertiary amine groups of PDEAEMA units were then utilized as functional handles to modify the core-forming block chemistry via a postpolymerization betainization approach for tuning both the cloud-point temperature (T CP) and flocculation temperature (T CFT) of these particles. In particular, four different sulfonate salts were explored aiming to investigate the effect of the carbon chain length and the presence of hydroxyl functionalities alongside the carbon spacer on the particle's thermoresponsiveness. In all cases, it was possible to regulate both T CP and T CFT of these nanoparticles upon varying the degree of betainization. Although T CP was found to be dependent on the type of betainization reagent utilized, it only significantly increased for particles betainized using sodium 3-chloro-2-hydroxy-1-propanesulfonate, while varying the aliphatic chain length of the sulfobetaine only provided limited temperature variation. In comparison, the onset of flocculation for betainized particles varied over a much broader temperature range when varying the degree of betainization with no real correlation identified between T CFT and the sulfobetaine structure. Moreover, experimental results were shown to partially correlate to computational oligomer hydrophobicity calculations. Overall, the innovative postpolymerization betainization approach utilizing various sulfonate salts reported herein provides a straightforward methodology for modifying the thermoresponsive behavior of soft polymeric particles with potential applications in drug delivery, sensing, and oil/lubricant viscosity modification.
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Affiliation(s)
- Matthieu
P. J. Miclotte
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Stefan B. Lawrenson
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Spyridon Varlas
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Bilal Rashid
- BP
Exploration Operating Company Ltd., Chertsey Road, Sunbury-on-Thames,
Middlesex TW16 7LN, United
Kingdom
| | - Emma Chapman
- BP
Exploration Operating Company Ltd., Chertsey Road, Sunbury-on-Thames,
Middlesex TW16 7LN, United
Kingdom
| | - Rachel K. O’Reilly
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom,
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9
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Willinger M, Reimhult E. Thermoresponsive Nanoparticles with Cyclic-Polymer-Grafted Shells Are More Stable than with Linear-Polymer-Grafted Shells: Effect of Polymer Topology, Molecular Weight, and Core Size. J Phys Chem B 2021; 125:7009-7023. [PMID: 34156854 PMCID: PMC8279546 DOI: 10.1021/acs.jpcb.1c00142] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 05/26/2021] [Indexed: 11/27/2022]
Abstract
Polymer brush-grafted superparamagnetic iron oxide nanoparticles can change their aggregation state in response to temperature and are potential smart materials for many applications. Recently, the shell morphology imposed by grafting to a nanoparticle core was shown to strongly influence the thermoresponsiveness through a coupling of intrashell solubility transitions and nanoparticle aggregation. We investigate how a change from linear to cyclic polymer topology affects the thermoresponsiveness of poly(2-isopropyl-2-oxazoline) brush-grafted superparamagnetic iron oxide nanoparticles. Linear and cyclic polymers with three different molecular weights (7, 18, and 24.5 kg mol-1) on two different core sizes (3.7 and 9.2 nm) and as free polymer were investigated. We observed the critical flocculation temperature (CFT) during temperature cycling dynamic light scattering experiments, the critical solution temperature (CST), and the transition enthalpy per monomer during differential scanning calorimetry measurements. When all conditions are identical, cyclic polymers increase the colloidal stability and the critical flocculation temperature compared to their linear counterparts. Furthermore, the cyclic polymer shows only one uniform transition, while we observe multiple transitions for the linear polymer shells. We link the single transition and higher colloidal stability to the absence in cyclic PiPrOx shells of a dilute outer part where the particle shells can interdigitate.
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Affiliation(s)
- Max Willinger
- Institute for Biologically Inspired
Materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna, Muthgasse 11, 1190 Vienna, Austria
| | - Erik Reimhult
- Institute for Biologically Inspired
Materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna, Muthgasse 11, 1190 Vienna, Austria
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10
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Deng F, Wu L, Lu X, Wang S, Chen S, Ding T. A General Nanocoating Method via Photoinduced Self-Initiation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:5548-5553. [PMID: 33904742 DOI: 10.1021/acs.langmuir.1c00303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Hybrid core-shell nanoparticles play a very significant role in many applications. Here, we report a light-induced oligomer coating on nanoparticles via Norrish type I reaction. The radical species generated via UV irradiation can chemically initiate the photoinitiators, which are then polymerized and deposited on inorganic nanoparticles via heterogeneous nucleation, forming a soft oligomer coating smaller than 40 nm. This coating method is versatile and potentially applicable to many different types of inorganic cores and their assemblies, making it a very useful technique for "freezing" nanoassemblies in solution. Moreover, these oligomer coatings containing radical species can also initiate surface polymerization of both styrenic and acrylic monomers with certain functionalities for different applications such as self-assembly, plasmon tuning, and pH sensing (3.5-4.5).
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Affiliation(s)
- Fangfang Deng
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072 China
| | - Liang Wu
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Xiaolin Lu
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072 China
| | - Shuangshuang Wang
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072 China
| | - Suming Chen
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Tao Ding
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072 China
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11
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Lapresta-Fernández A, Salinas-Castillo A, Capitán-Vallvey LF. Synthesis of a thermoresponsive crosslinked MEO 2MA polymer coating on microclusters of iron oxide nanoparticles. Sci Rep 2021; 11:3947. [PMID: 33597607 PMCID: PMC7889631 DOI: 10.1038/s41598-021-83608-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 02/05/2021] [Indexed: 01/10/2023] Open
Abstract
Encapsulation of magnetic nanoparticles (MNPs) of iron (II, III) oxide (Fe3O4) with a thermopolymeric shell of a crosslinked poly(2-(2-methoxyethoxy)ethyl methacrylate) P(MEO2MA) is successfully developed. Magnetic aggregates of large size, around 150-200 nm are obtained during the functionalization of the iron oxide NPs with vinyl groups by using 3-butenoic acid in the presence of a water soluble azo-initiator and a surfactant, at 70 °C. These polymerizable groups provide a covalent attachment of the P(MEO2MA) shell on the surface of the MNPs while a crosslinked network is achieved by including tetraethylene glycol dimethacrylate in the precipitation polymerization synthesis. Temperature control is used to modulate the swelling-to-collapse transition volume until a maximum of around 21:1 ratio between the expanded: shrunk states (from 364 to 144 nm in diameter) between 9 and 49 °C. The hybrid Fe3O4@P(MEO2MA) microgel exhibits a lower critical solution temperature of 21.9 °C below the corresponding value for P(MEO2MA) (bulk, 26 °C). The MEO2MA coating performance in the hybrid microgel is characterized by dynamic light scattering and transmission electron microscopy. The content of preformed MNPs [up to 30.2 (wt%) vs. microgel] was established by thermogravimetric analysis while magnetic properties by vibrating sample magnetometry.
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Affiliation(s)
- Alejandro Lapresta-Fernández
- ECsens Group, Department of Analytical Chemistry, Campus Fuentenueva, University of Granada, 18071, Granada, Spain.
- Unit of Excellence in Chemistry Applied To Biomedicine and the Environment of the University of Granada, Granada, Spain.
| | - Alfonso Salinas-Castillo
- ECsens Group, Department of Analytical Chemistry, Campus Fuentenueva, University of Granada, 18071, Granada, Spain
- Unit of Excellence in Chemistry Applied To Biomedicine and the Environment of the University of Granada, Granada, Spain
| | - Luis Fermín Capitán-Vallvey
- ECsens Group, Department of Analytical Chemistry, Campus Fuentenueva, University of Granada, 18071, Granada, Spain
- Unit of Excellence in Chemistry Applied To Biomedicine and the Environment of the University of Granada, Granada, Spain
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Roma E, Corsi P, Willinger M, Leitner NS, Zirbs R, Reimhult E, Capone B, Gasperi T. Theoretical and Experimental Design of Heavy Metal-Mopping Magnetic Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2021; 13:1386-1397. [PMID: 33389993 PMCID: PMC8021223 DOI: 10.1021/acsami.0c17759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 12/18/2020] [Indexed: 06/12/2023]
Abstract
Herein, we show a comprehensive experimental, theoretical, and computational study aimed at designing macromolecules able to adsorb a cargo at the nanoscale. Specifically, we focus on the adsorption properties of star diblock copolymers, i.e., macromolecules made by a number f of H-T diblock copolymer arms tethered on a central core; the H monomeric heads, which are closer to the tethering point, are attractive toward a specific target, while the T monomeric tails are neutral to the cargo. Experimentally, we exploited the adaptability of poly(2-oxazoline)s (POxs) to realize block copolymer-coated nanoparticles with a proper functionalization able to interact with heavy metals and show or exhibit a thermoresponsive behavior in aqueous solution. We here present the synthesis and analysis of the properties of a high molecular mass block copolymer featured by (i) a polar side chain, capable of exploiting electrostatic and hydrophilic interaction with a predetermined cargo, and (ii) a thermoresponsive scaffold, able to change the interaction with the media by tuning the temperature. Afterward, the obtained polymers were grafted onto iron oxide nanoparticles and the thermoresponsive properties were investigated. Through isothermal titration calorimetry, we then analyzed the adsorption properties of the synthesized superparamagnetic nanoparticles for heavy metal ions in aqueous solution. Additionally, we use a combination of scaling theories and simulations to link equilibrium properties of the system to a prediction of the loading properties as a function of size ratio and effective interactions between the considered species. The comparison between experimental results on adsorption and theoretical prediction validates the whole design process.
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Affiliation(s)
- Elia Roma
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Pietro Corsi
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Max Willinger
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Nikolaus Simon Leitner
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Ronald Zirbs
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Erik Reimhult
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Barbara Capone
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Tecla Gasperi
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
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13
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Mellot G, Guigner JM, Jestin J, Bouteiller L, Stoffelbach F, Rieger J. Unexpected thermo-responsiveness of bisurea-functionalized hydrophilic polymers in water. J Colloid Interface Sci 2021; 581:874-883. [PMID: 32823054 DOI: 10.1016/j.jcis.2020.07.147] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/29/2020] [Accepted: 07/30/2020] [Indexed: 11/18/2022]
Abstract
HYPOTHESIS Thermoresponsive polymers are important materials for various applications. However, the number of polymers that exhibit this property in the temperature range of interest remains limited. The development of novel rational design strategies through the understanding of the thermal transition's origin is therefore of utmost importance. EXPERIMENTS Bisurea-functionalized water-soluble polymers were synthesized by RAFT polymerization. After direct dissolution in water, the supramolecular assemblies were analyzed by cryo-TEM and SANS. Their temperature-dependent water-solubility was characterized by various techniques, namely DLS, SANS, DSC, IR, to understand the origin of the temperature sensitivity. FINDINGS The supramolecular assemblies exhibit an unexpected temperature-dependent solubility. For instance, a cloud point of only 39 °C was measured for poly(N,N-dimethylacrylamide) assemblies. This property is not restricted to one specific polymer but is rather a general feature of bisurea-functionalized polymers that form supramacromolecular bottlebrushes in water. The results highlight the existence of two distinct transitions; the first one is a visually perceptible cloud point due to the aggregation of individual micelles, presumably driven by the hydrophobic effect. The second transition is related to the dissociation of intermolecular bisurea hydrogen bonds. Finally, we show that it is possible to widely tune the cloud point temperature through the formation of co-assemblies.
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Affiliation(s)
- Gaëlle Mellot
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, Equipe Chimie des Polymères, 75252 Paris, France
| | - Jean-Michel Guigner
- Sorbonne Université, CNRS, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, UMR 7590 - IRD - MNHN, F-75005 Paris, France
| | - Jacques Jestin
- Laboratoire Léon Brillouin, UMR12 CEA-CNRS, Bât. 563, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - Laurent Bouteiller
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, Equipe Chimie des Polymères, 75252 Paris, France
| | - François Stoffelbach
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, Equipe Chimie des Polymères, 75252 Paris, France
| | - Jutta Rieger
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, Equipe Chimie des Polymères, 75252 Paris, France
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14
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Peng W, Cai Y, Fanslau L, Vana P. Nanoengineering with RAFT polymers: from nanocomposite design to applications. Polym Chem 2021. [DOI: 10.1039/d1py01172c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Reversible addition–fragmentation chain-transfer (RAFT) polymerization is a powerful tool for the precise formation of macromolecular building blocks that can be used for the construction of well-defined nanocomposites.
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Affiliation(s)
- Wentao Peng
- Institut für Physikalische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 6, 37077 Göttingen, Germany
| | - Yingying Cai
- Institut für Physikalische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 6, 37077 Göttingen, Germany
| | - Luise Fanslau
- Institut für Physikalische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 6, 37077 Göttingen, Germany
| | - Philipp Vana
- Institut für Physikalische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 6, 37077 Göttingen, Germany
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15
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Krasia-Christoforou T, Socoliuc V, Knudsen KD, Tombácz E, Turcu R, Vékás L. From Single-Core Nanoparticles in Ferrofluids to Multi-Core Magnetic Nanocomposites: Assembly Strategies, Structure, and Magnetic Behavior. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2178. [PMID: 33142887 PMCID: PMC7692798 DOI: 10.3390/nano10112178] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 10/19/2020] [Accepted: 10/20/2020] [Indexed: 12/20/2022]
Abstract
Iron oxide nanoparticles are the basic components of the most promising magnetoresponsive nanoparticle systems for medical (diagnosis and therapy) and bio-related applications. Multi-core iron oxide nanoparticles with a high magnetic moment and well-defined size, shape, and functional coating are designed to fulfill the specific requirements of various biomedical applications, such as contrast agents, heating mediators, drug targeting, or magnetic bioseparation. This review article summarizes recent results in manufacturing multi-core magnetic nanoparticle (MNP) systems emphasizing the synthesis procedures, starting from ferrofluids (with single-core MNPs) as primary materials in various assembly methods to obtain multi-core magnetic particles. The synthesis and functionalization will be followed by the results of advanced physicochemical, structural, and magnetic characterization of multi-core particles, as well as single- and multi-core particle size distribution, morphology, internal structure, agglomerate formation processes, and constant and variable field magnetic properties. The review provides a comprehensive insight into the controlled synthesis and advanced structural and magnetic characterization of multi-core magnetic composites envisaged for nanomedicine and biotechnology.
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Affiliation(s)
- Theodora Krasia-Christoforou
- Department of Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Avenue, P.O. Box 20537, Nicosia 1678, Cyprus;
| | - Vlad Socoliuc
- Laboratory of Magnetic Fluids, Center for Fundamental and Advanced Technical Research, Romanian Academy–Timisoara Branch, Mihai Viteazul Ave. 24, 300223 Timisoara, Romania;
| | - Kenneth D. Knudsen
- Department for Neutron Materials Characterization, Institute for Energy Technology (IFE), 2027 Kjeller, Norway;
| | - Etelka Tombácz
- Soós Ernő Water Technology Research and Development Center, University of Pannonia, Zrínyi M. Str. 18., H-8800 Nagykanizsa, Hungary;
| | - Rodica Turcu
- Department of Physics of Nanostructured Systems, National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Str. 67-103, 400293 Cluj-Napoca, Romania
| | - Ladislau Vékás
- Laboratory of Magnetic Fluids, Center for Fundamental and Advanced Technical Research, Romanian Academy–Timisoara Branch, Mihai Viteazul Ave. 24, 300223 Timisoara, Romania;
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16
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Deloney M, Smart K, Christiansen BA, Panitch A. Thermoresponsive, hollow, degradable core-shell nanoparticles for intra-articular delivery of anti-inflammatory peptide. J Control Release 2020; 323:47-58. [PMID: 32278830 PMCID: PMC9930616 DOI: 10.1016/j.jconrel.2020.04.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 04/01/2020] [Accepted: 04/03/2020] [Indexed: 12/13/2022]
Abstract
Inflammation following joint trauma contributes to cartilage degradation and progression of post traumatic osteoarthritis (PTOA). Therefore, drug delivery vehicles that deliver effective anti-inflammatory treatments have the potential to prevent PTOA. We have developed solid and hollow, thermoresponsive nanoparticles for the controlled release of our anti-inflammatory MK2-inhibiting (MK2i) peptide for intra-articular injection to halt inflammation that contributes to the advancement of PTOA. This system exploits the thermosensitive characteristic of N-isopropyl acrylamide (NIPAm) to transition phases when passing through its lower critical solution temperature (LCST). The nanoparticles (NPs) swell below the LCST and constrict above it. Non-crosslinked poly(NIPAm) (pNIPAm), held above its LCST, formed hydrophobic cores around which shells composed of NIPAm, degradable crosslinker N, N'-bis (acryloyl) cystamine (BAC), sulfated 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS), and acrylic acid (AAc) were polymerized. Removal of the non-crosslinked pNIPAm cores via diffusion produced thermosensitive, degradable nanoparticles with low density, or hollow, cores. The data presented here revealed low-density, termed hollow, nanoparticles (hNPs) load and release significantly more MK2i than solid nanoparticles (sNPs). Furthermore, drug loading below the LCST of NIPAm results in roughly 2.5 times more therapeutic encapsulation compared to loading particles in their constricted state. Hollow nanoparticles increase drug loading compared to solid nanoparticles, are taken up into chondrocytes within 24 h, cleared from the cells within 6 days, significantly decrease the secretion of the proinflammatory cytokine IL-6, and, via intra-articular injection, are successfully delivered into the joint space of rats. The peptide loaded nanoparticles provide a reproducible platform for intra-articular delivery of therapeutics.
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Affiliation(s)
- Marcus Deloney
- Biomedical Engineering Graduate Group, University of California Davis, Davis, CA, USA
| | - Kyra Smart
- Biomedical Engineering Graduate Group, University of California Davis, Davis, CA, USA
| | - Blaine A. Christiansen
- Biomedical Engineering Graduate Group, University of California Davis, Davis, CA, USA,Department of Orthopedic Surgery, University of California Davis Health, Lawrence J. Ellison Musculoskeletal Research Center, 4635 2nd Avenue, Suite 2000, Sacramento, CA 95817, USA
| | - Alyssa Panitch
- Biomedical Engineering Graduate Group, University of California Davis, Davis, CA, USA.
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Osorio-Blanco ER, Rancan F, Klossek A, Nissen JH, Hoffmann L, Bergueiro J, Riedel S, Vogt A, Rühl E, Calderón M. Polyglycerol-Based Thermoresponsive Nanocapsules Induce Skin Hydration and Serve as a Skin Penetration Enhancer. ACS APPLIED MATERIALS & INTERFACES 2020; 12:30136-30144. [PMID: 32519848 DOI: 10.1021/acsami.0c06874] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The use of penetration enhancers (chemical or physical) has been proven to dramatically improve the penetration of therapeutics. Nevertheless, their use poses great risks, as they can lead to permanent damage of the skin, reduce its barrier efficiency, and result in the intrusion of harmful substances. Among the most used skin penetration enhancers, water is greatly accepted because skin quickly recovers from its exposure. Nanocapsules (NCs) represent a promising combination of the carrier system and penetration enhancer because their water-containing void combined with their polymer-based shell can be used to induce high local skin hydration, while simultaneously aiding the transport of drugs across the skin barrier. In this study, NCs were synthesized with a void core of 100 nm in diameter, a thermoresponsive shell based on different ratios of poly(N-isopropylacrylamide) and poly(N-isopropylmethacrylamide) as thermoresponsive polymers, and dendritic polyglycerol as a macromolecular cross-linker. These NCs can shrink or swell upon a thermal trigger, which was used to induce the release of the entrapped water in a controlled fashion. The interactions and effects of thermoresponsive NCs on the stratum corneum of excised human skin were investigated using fluorescence microscopy, high-resolution optical microscopy, and stimulated Raman spectromicroscopy. It could be observed that the thermoresponsive NCs increase the amount of deuterated water that penetrated into the viable epidermis. Moreover, NCs increased the skin penetration of a high-molecular weight dye (Atto Oxa12 NHS ester, MW = 835 g/mol) with respect to formulations in water or 30% DMSO, emphasizing the features of the NCs as a skin penetration enhancer.
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Affiliation(s)
- Ernesto R Osorio-Blanco
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustr. 3, 14195 Berlin, Germany
| | - Fiorenza Rancan
- Clinical Research Center for Hair and Skin Science, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - André Klossek
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Arnimallee 22, 14195 Berlin, Germany
| | - Jan H Nissen
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34/36, 14195 Berlin, Germany
| | - Luisa Hoffmann
- Clinical Research Center for Hair and Skin Science, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Julian Bergueiro
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustr. 3, 14195 Berlin, Germany
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Comopostela, 15782 Santiago de Compostela, Spain
| | - Sebastian Riedel
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34/36, 14195 Berlin, Germany
| | - Annika Vogt
- Clinical Research Center for Hair and Skin Science, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Eckart Rühl
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Arnimallee 22, 14195 Berlin, Germany
| | - Marcelo Calderón
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustr. 3, 14195 Berlin, Germany
- POLYMAT and Applied Chemistry Department, Faculty of Chemistry, University of the Basque Country, UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
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Krishnan BP, Prieto-López LO, Hoefgen S, Xue L, Wang S, Valiante V, Cui J. Thermomagneto-Responsive Smart Biocatalysts for Malonyl-Coenzyme A Synthesis. ACS APPLIED MATERIALS & INTERFACES 2020; 12:20982-20990. [PMID: 32268726 DOI: 10.1021/acsami.0c04344] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Smart biocatalysts, in which enzymes are conjugated to stimuli-responsive polymers, have gained considerable attention because of their catalytic switchability and recyclability. Although many systems have been developed, they require separate laboratory techniques for their recovery, making them unsuitable for many practical applications. To address these issues, we designed a thermomagneto-responsive biocatalyst by immobilizing an enzyme on the terminal of thermo-responsive polymer brushes tethered on magnetic nanoparticle (NP) clusters. The concept is demonstrated by a system consisting of iron oxide NPs, poly(N-isopropyl-acrylamide), and a malonyl-Coenzyme A synthetase (MatB). By using free malonate and coenzyme A (CoA), the designed catalyst exhibits adequate activity for the production of malonyl-CoA. Thanks to the use of a magnetic NP cluster, whose magnetic moment is high, this system is fully recoverable under the magnetic field at above 32 °C because of the collapse of the thermo-responsive polymer shell in the clusters. In addition, the recycled catalyst maintains moderate activity even after three cycles, and it also shows excellent catalytic switchability, that is, negligible catalytic activity at 25 °C because of the blockage of the active sites of the enzyme by the extended hydrophilic polymer chains but great catalytic activity at a temperatures above the lower critical solution temperature at which the enzymes are exposed to the reaction medium because of the thermo-responsive contraction of polymer chains. Because the azide functionality in our system can be easily functionalized depending upon our need, such catalytically switchable, fully recoverable, and recyclable multiresponsive catalytic systems can be of high relevance for other cell-free biosynthetic approaches.
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Affiliation(s)
- Baiju P Krishnan
- INM-Leibniz Institute for New Materials, Campus D2 2, Saarbrücken 66123, Germany
| | | | - Sandra Hoefgen
- Leibniz Research Group-Biobricks of Microbial Natural Product Syntheses, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Adolf-Reichwein-Straße 23, 07745 Jena, Germany
| | - Lulu Xue
- INM-Leibniz Institute for New Materials, Campus D2 2, Saarbrücken 66123, Germany
| | - Sheng Wang
- INM-Leibniz Institute for New Materials, Campus D2 2, Saarbrücken 66123, Germany
| | - Vito Valiante
- Leibniz Research Group-Biobricks of Microbial Natural Product Syntheses, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Adolf-Reichwein-Straße 23, 07745 Jena, Germany
| | - Jiaxi Cui
- INM-Leibniz Institute for New Materials, Campus D2 2, Saarbrücken 66123, Germany
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Lassenberger A, Scheberl A, Batchu KC, Cristiglio V, Grillo I, Hermida-Merino D, Reimhult E, Baccile N. Biocompatible Glyconanoparticles by Grafting Sophorolipid Monolayers on Monodispersed Iron Oxide Nanoparticles. ACS APPLIED BIO MATERIALS 2019; 2:3095-3107. [DOI: 10.1021/acsabm.9b00427] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andrea Lassenberger
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna, Institute for Biologically Inspired Materials, Muthgasse 11/II, 1190 Vienna, Austria
- Institut Laue-Langevin, 71 Avenue des Martyrs, Grenoble 38042 CEDEX 9, France
| | - Andrea Scheberl
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna, Institute for Biologically Inspired Materials, Muthgasse 11/II, 1190 Vienna, Austria
| | | | - Viviana Cristiglio
- Institut Laue-Langevin, 71 Avenue des Martyrs, Grenoble 38042 CEDEX 9, France
| | - Isabelle Grillo
- Institut Laue-Langevin, 71 Avenue des Martyrs, Grenoble 38042 CEDEX 9, France
| | - Daniel Hermida-Merino
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, Grenoble 38042 CEDEX 9, France
| | - Erik Reimhult
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna, Institute for Biologically Inspired Materials, Muthgasse 11/II, 1190 Vienna, Austria
| | - Niki Baccile
- Sorbonne Université, Centre National de la Recherche Scientifique, Laboratoire de Chimie de la Matière Condensée de Paris, LCMCP, Paris F-75005, France
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