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da Costa Marques R, Hüppe N, Speth KR, Oberländer J, Lieberwirth I, Landfester K, Mailänder V. Proteomics reveals time-dependent protein corona changes in the intracellular pathway. Acta Biomater 2023; 172:355-368. [PMID: 37839632 DOI: 10.1016/j.actbio.2023.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 10/04/2023] [Accepted: 10/06/2023] [Indexed: 10/17/2023]
Abstract
The intracellular protein corona has not been fully investigated in the field of nanotechnology-biology (nano-bio) interactions. To effectively understand intracellular protein corona formation and dynamics, we established a workflow to isolate the intracellular protein corona at different uptake times of two nanoparticles - magnetic hydroxyethyl starch nanoparticles (HES-NPs) and magnetic human serum albumin nanocapsules (HSA-NCs). We performed label-free quantitative LC-MS proteomics to analyze the composition of the intracellular protein corona and correlated our findings with results from conventional methods for intracellular trafficking of nanocarriers, such as flow cytometry, transmission electron microscopy (TEM), and confocal microscopy (cLSM). We determined the evolution of the intracellular protein corona. At different time stages the protein corona of the HES-NPs with a slower uptake changed, but there were fewer changes in that of the HSA-NCs with a more rapid uptake. We identified proteins that are involved in macropinocytosis (RAC1, ASAP2) as well as caveolin. This was confirmed by blocking experiments and by TEM studies. The investigated nanocarrier predominantly trafficked from early endosomes as determined by RAB5 identification in proteomics and in cLSM to late endosomes/lysosomes (RAB7, LAMP1, cathepsin K and HSP 90-beta) We further demonstrated differences between nanoparticles with slower and faster uptake kinetics and determined the associated proteome at different time points. Analysis of the intracellular protein corona provides us with effective data to examine the intracellular trafficking of nanocarriers used in efficient drug delivery and intracellular applications. STATEMENT OF SIGNIFICANCE: Many research papers focus on the protein corona on nanoparticles formed in biological fluids, but there are hardly any articles dealing with proteins that come in contact with nanoparticles inside cells. The "intracellular protein corona" studied here is a far more complex and highly demanding field. Most nanocarriers are designed to be taken up into cells. Given this, we chose two different nanocarriers to reveal changes in the proteins in dendritic cells during contact at specific times. Further studies will allow us to examine molecular target proteins using these methods. Our research is a significant addition towards the goal of understanding and thus improving the efficacy of drug nanocarriers.
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Affiliation(s)
- Richard da Costa Marques
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany; Dermatology Clinic, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Natkritta Hüppe
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Kai R Speth
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany; Dermatology Clinic, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Jennifer Oberländer
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany; Dermatology Clinic, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Ingo Lieberwirth
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Volker Mailänder
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany; Dermatology Clinic, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany.
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2
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King AM, Insinna T, Wells CJR, Raby IA, Gun'ko YK, Davies GL. Magnetically driven preparation of 1-D nano-necklaces capable of MRI relaxation enhancement. NANOSCALE ADVANCES 2023; 5:3209-3213. [PMID: 37325543 PMCID: PMC10262958 DOI: 10.1039/d3na00137g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 05/23/2023] [Indexed: 06/17/2023]
Abstract
We report a novel magnetically-facilitated approach to produce 1-D 'nano-necklace' arrays composed of 0-D magnetic nanoparticles, which are assembled and coated with an oxide layer to produce semi-flexible core@shell type structures. These 'nano-necklaces' demonstrate good MRI relaxation properties despite their coating and permanent alignment, with low field enhancement due to structural and magnetocrystalline anisotropy.
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Affiliation(s)
- Aaron M King
- Department of Chemistry, University College London 20 Gordon Street London WC1H 0AJ UK
| | - Teresa Insinna
- Department of Chemistry, University College London 20 Gordon Street London WC1H 0AJ UK
| | - Connor J R Wells
- Department of Chemistry, University College London 20 Gordon Street London WC1H 0AJ UK
| | - Isabel A Raby
- Department of Chemistry, University College London 20 Gordon Street London WC1H 0AJ UK
| | - Yurii K Gun'ko
- School of Chemistry, Trinity College Dublin Dublin 2 Ireland
| | - Gemma-Louise Davies
- Department of Chemistry, University College London 20 Gordon Street London WC1H 0AJ UK
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3
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Fan X, Walther A. 1D Colloidal chains: recent progress from formation to emergent properties and applications. Chem Soc Rev 2022; 51:4023-4074. [PMID: 35502721 DOI: 10.1039/d2cs00112h] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Integrating nanoscale building blocks of low dimensionality (0D; i.e., spheres) into higher dimensional structures endows them and their corresponding materials with emergent properties non-existent or only weakly existent in the individual building blocks. Constructing 1D chains, 2D arrays and 3D superlattices using nanoparticles and colloids therefore continues to be one of the grand goals in colloid and nanomaterial science. Amongst these higher order structures, 1D colloidal chains are of particular interest, as they possess unique anisotropic properties. In recent years, the most relevant advances in 1D colloidal chain research have been made in novel synthetic methodologies and applications. In this review, we first address a comprehensive description of the research progress concerning various synthetic strategies developed to construct 1D colloidal chains. Following this, we highlight the amplified and emergent properties of the resulting materials, originating from the assembly of the individual building blocks and their collective behavior, and discuss relevant applications in advanced materials. In the discussion of synthetic strategies, properties, and applications, particular attention will be paid to overarching concepts, fresh trends, and potential areas of future research. We believe that this comprehensive review will be a driver to guide the interdisciplinary field of 1D colloidal chains, where nanomaterial synthesis, self-assembly, physical property studies, and material applications meet, to a higher level, and open up new research opportunities at the interface of classical disciplines.
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Affiliation(s)
- Xinlong Fan
- Institute for Macromolecular Chemistry, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 31, 79104, Freiburg, Germany.
| | - Andreas Walther
- A3BMS Lab, Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany.
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Kralj S, Marchesan S. Bioinspired Magnetic Nanochains for Medicine. Pharmaceutics 2021; 13:1262. [PMID: 34452223 PMCID: PMC8398308 DOI: 10.3390/pharmaceutics13081262] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/12/2021] [Accepted: 08/13/2021] [Indexed: 12/12/2022] Open
Abstract
Superparamagnetic iron oxide nanoparticles (SPIONs) have been widely used for medicine, both in therapy and diagnosis. Their guided assembly into anisotropic structures, such as nanochains, has recently opened new research avenues; for instance, targeted drug delivery. Interestingly, magnetic nanochains do occur in nature, and they are thought to be involved in the navigation and geographic orientation of a variety of animals and bacteria, although many open questions on their formation and functioning remain. In this review, we will analyze what is known about the natural formation of magnetic nanochains, as well as the synthetic protocols to produce them in the laboratory, to conclude with an overview of medical applications and an outlook on future opportunities in this exciting research field.
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Affiliation(s)
- Slavko Kralj
- Department for Materials Synthesis, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Silvia Marchesan
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy;
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5
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Yang X, Lu ZY. A method for directly counting and quantitatively comparing aggregated structures during cluster formation. CHINESE J CHEM PHYS 2021. [DOI: 10.1063/1674-0068/cjcp2008139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Xi Yang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130021, China
| | - Zhong-yuan Lu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130021, China
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6
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Jiang S, Xiao M, Sun W, Crespy D, Mailänder V, Peng X, Fan J, Landfester K. Synergistic Anticancer Therapy by Ovalbumin Encapsulation-Enabled Tandem Reactive Oxygen Species Generation. Angew Chem Int Ed Engl 2020; 59:20008-20016. [PMID: 32686218 PMCID: PMC7693068 DOI: 10.1002/anie.202006649] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/16/2020] [Indexed: 12/27/2022]
Abstract
The anticancer efficacy of photodynamic therapy (PDT) is limited due to the hypoxic features of solid tumors. We report synergistic PDT/chemotherapy with integrated tandem Fenton reactions mediated by ovalbumin encapsulation for improved in vivo anticancer therapy via an enhanced reactive oxygen species (ROS) generation mechanism. O2.- produced by the PDT is converted to H2 O2 by superoxide dismutase, followed by the transformation of H2 O2 to the highly toxic . OH via Fenton reactions by Fe2+ originating from the dissolution of co-loaded Fe3 O4 nanoparticles. The PDT process further facilitates the endosomal/lysosomal escape of the active agents and enhances their intracellular delivery to the nucleus-even for drug-resistant cells. Cisplatin generates O2.- in the presence of nicotinamide adenine dinucleotide phosphate oxidase and thereby improves the treatment efficiency by serving as an additional O2.- source for production of . OH radicals. Improved anticancer efficiency is achieved under both hypoxic and normoxic conditions.
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Affiliation(s)
- Shuai Jiang
- State Key Laboratory of Fine ChemicalsDalian University of Technology2 Linggong Road, Hi-tech ZoneDalian116024China
- Max Planck Institute for Polymer ResearchAckermannweg 1055128MainzGermany
| | - Ming Xiao
- State Key Laboratory of Fine ChemicalsDalian University of Technology2 Linggong Road, Hi-tech ZoneDalian116024China
- Ningbo Institute of Dalian University of Technology26 Yucai Road, Jiangbei DistrictNingbo315016China
| | - Wen Sun
- State Key Laboratory of Fine ChemicalsDalian University of Technology2 Linggong Road, Hi-tech ZoneDalian116024China
- Ningbo Institute of Dalian University of Technology26 Yucai Road, Jiangbei DistrictNingbo315016China
| | - Daniel Crespy
- Department of Materials Science and EngineeringSchool of Molecular Science and EngineeringVidyasirimedhi Institute of Science and Technology (VISTEC)Rayong21210Thailand
| | - Volker Mailänder
- Max Planck Institute for Polymer ResearchAckermannweg 1055128MainzGermany
- Department of DermatologyUniversity Clinic of the Johannes Gutenberg-University MainzLangenbeck str. 155131MainzGermany
| | - Xiaojun Peng
- State Key Laboratory of Fine ChemicalsDalian University of Technology2 Linggong Road, Hi-tech ZoneDalian116024China
| | - Jiangli Fan
- State Key Laboratory of Fine ChemicalsDalian University of Technology2 Linggong Road, Hi-tech ZoneDalian116024China
- Ningbo Institute of Dalian University of Technology26 Yucai Road, Jiangbei DistrictNingbo315016China
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7
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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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8
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Jiang S, Xiao M, Sun W, Crespy D, Mailänder V, Peng X, Fan J, Landfester K. Synergistic Anticancer Therapy by Ovalbumin Encapsulation‐Enabled Tandem Reactive Oxygen Species Generation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006649] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Shuai Jiang
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Road, Hi-tech Zone Dalian 116024 China
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Ming Xiao
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Road, Hi-tech Zone Dalian 116024 China
- Ningbo Institute of Dalian University of Technology 26 Yucai Road, Jiangbei District Ningbo 315016 China
| | - Wen Sun
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Road, Hi-tech Zone Dalian 116024 China
- Ningbo Institute of Dalian University of Technology 26 Yucai Road, Jiangbei District Ningbo 315016 China
| | - Daniel Crespy
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology (VISTEC) Rayong 21210 Thailand
| | - Volker Mailänder
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
- Department of Dermatology University Clinic of the Johannes Gutenberg-University Mainz Langenbeck str. 1 55131 Mainz Germany
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Road, Hi-tech Zone Dalian 116024 China
| | - Jiangli Fan
- State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Road, Hi-tech Zone Dalian 116024 China
- Ningbo Institute of Dalian University of Technology 26 Yucai Road, Jiangbei District Ningbo 315016 China
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9
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Luo W, Cui Q, Fang K, Chen K, Ma H, Guan J. Responsive Hydrogel-based Photonic Nanochains for Microenvironment Sensing and Imaging in Real Time and High Resolution. NANO LETTERS 2020; 20:803-811. [PMID: 29323918 DOI: 10.1021/acs.nanolett.7b04218] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Microenvironment sensing and imaging are of importance in microscale zones like microreactors, microfluidic systems, and biological cells. But they are so far implemented only based on chemical colors from dyes or quantum dots, which suffered either from photobleaching, quenching, or photoblinking behaviors, or from limited color gamut. In contrast, structural colors from hydrogel-based photonic crystals (PCs) may be stable and tunable in the whole visible spectrum by diffraction peak shift, facilitating the visual detection with high accuracy. However, the current hydrogel-based PCs are all inappropriate for microscale detection due to the bulk size. Here we demonstrate the smallest hydrogel-based PCs, responsive hydrogel-based photonic nanochains with high-resolution and real-time response, by developing a general hydrogen bond-guided template polymerization method. A variety of mechanically separated stimuli-responsive hydrogel-based photonic nanochains have been obtained in a large scale including those responding to pH, solvent, and temperature. Each of them has a submicrometer diameter and is composed of individual one-dimensional periodic structure of magnetic particles locked by a tens-of-nanometer-thick peapod-like responsive hydrogel shell. Taking the pH-responsive hydrogel-based photonic nanochains, for example, pH-induced hydrogel volume change notably alters the nanochain length, resulting in a significant variation of the structural color. The submicrometer size endows the nanochains with improved resolution and response time by 2-3 orders of magnitude than the previous counterparts. Our results for the first time validate the feasibility of using structural colors for microenvironment sensing and imaging and may further promote the applications of responsive PCs, such as in displays and printing.
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Affiliation(s)
- Wei Luo
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China
- Department of Materials Science and Engineering , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
| | - Qian Cui
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China
| | - Kai Fang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China
| | - Ke Chen
- School of Chemistry, Chemical Engineering and Life Science , Wuhan University of Technology , Wuhan 430070 , China
| | - Huiru Ma
- School of Chemistry, Chemical Engineering and Life Science , Wuhan University of Technology , Wuhan 430070 , China
| | - Jianguo Guan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China
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10
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Jiang S, Prozeller D, Pereira J, Simon J, Han S, Wirsching S, Fichter M, Mottola M, Lieberwirth I, Morsbach S, Mailänder V, Gehring S, Crespy D, Landfester K. Controlling protein interactions in blood for effective liver immunosuppressive therapy by silica nanocapsules. NANOSCALE 2020; 12:2626-2637. [PMID: 31939969 DOI: 10.1039/c9nr09879h] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Immunosuppression with glucocorticoids is a common treatment for autoimmune liver diseases and after liver transplant, which is however associated with severe side-effects. Targeted delivery of glucocorticoids to inflammatory cells, e.g. liver macrophages and Kupffer cells, is a promising approach for minimizing side effects. Herein, we prepare core-shell silica nanocapsules (SiO2 NCs) via a sol-gel process confined in nanodroplets for targeted delivery of dexamethasone (DXM) for liver immunosuppressive therapy. DXM with concentrations up to 100 mg mL-1 in olive oil are encapsulated while encapsulation efficiency remains over 95% after 15 days. Internalization of NCs by non-parenchymal murine liver cells significantly reduces the release of inflammatory cytokines, indicating an effective suppression of inflammatory response of liver macrophages. Fluorescent and magnetic labeling of the NCs allows for monitoring their intracellular trafficking and biodegradation. Controlled interaction with blood proteins and good colloidal stability in blood plasma are achieved via PEGylation of the NCs. Specific proteins responsible for stealth effect, such as apolipoprotein A-I, apolipoprotein A-IV, and clusterin, are present in large amounts on the PEGylated NCs. In vivo biodistribution investigations prove an efficient accumulation of NCs in the liver, underlining the suitability of the SiO2 NCs as a dexamethasone carrier for treating inflammatory liver diseases.
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Affiliation(s)
- Shuai Jiang
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
| | - Domenik Prozeller
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
| | - Jorge Pereira
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
| | - Johanna Simon
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany. and Dermatology Clinic, University Medical Center of the Johannes Gutenberg-University, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Shen Han
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
| | - Sebastian Wirsching
- Children's Hospital, University Medical Center of the Johannes-Gutenberg University, Mainz, Germany
| | - Michael Fichter
- Children's Hospital, University Medical Center of the Johannes-Gutenberg University, Mainz, Germany
| | - Milagro Mottola
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
| | - Ingo Lieberwirth
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
| | - Svenja Morsbach
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
| | - Volker Mailänder
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany. and Dermatology Clinic, University Medical Center of the Johannes Gutenberg-University, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Stephan Gehring
- Children's Hospital, University Medical Center of the Johannes-Gutenberg University, Mainz, Germany
| | - Daniel Crespy
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany. and Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
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11
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Solid polyaniline dendrites consisting of high aspect ratio branches self-assembled using sodium lauryl sulfonate as soft templates: Synthesis and electrochemical performance. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121808] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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12
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Zhao S, Wu Y, Lu W, Liu B. Capillary Force Driving Directional 1D Assembly of Patchy Colloidal Discs. ACS Macro Lett 2019; 8:363-367. [PMID: 35651138 DOI: 10.1021/acsmacrolett.8b00985] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Self-assembly from individual colloidal building units to complex superstructures provides a simple yet effective way for the fabrication of functional materials. A rational design of the unit interactions is essential for it to proceed in a desired manner. Here we show that nondirectional capillary force can be used for directional one-dimensional (1D) assembly of colloidal discs having a designed patch distribution, and colloidal discs with two liquid patches can assemble into long colloidal chains where the stacked colloidal discs have a well-matched configuration with parallel orientation. The length of the chains can be controlled by controlling the experimental parameters. We also found when liquid patches gradually turn into sticky patches, hydrophobic attraction comes into play and becomes dominant, which can also result in chains with continuously increasing length. This method opens an effective avenue for obtaining colloidal chains (or fibers), which can be adapted for the fabrication of other superstructures.
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Affiliation(s)
- Shuping Zhao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100149, China
| | - Yuanyuan Wu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Wensheng Lu
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Bing Liu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100149, China
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13
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Hu M, Butt HJ, Landfester K, Bannwarth MB, Wooh S, Thérien-Aubin H. Shaping the Assembly of Superparamagnetic Nanoparticles. ACS NANO 2019; 13:3015-3022. [PMID: 30802035 PMCID: PMC6728097 DOI: 10.1021/acsnano.8b07783] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 02/25/2019] [Indexed: 05/28/2023]
Abstract
Superparamagnetism exists only in nanocrystals, and to endow micro/macro-materials with superparamagnetism, superparamagnetic nanoparticles have to be assembled into complex materials. Most techniques currently used to produce such assemblies are inefficient in terms of time and material. Herein, we used evaporation-guided assembly to produce superparamagnetic supraparticles by drying ferrofluid droplets on a superamphiphobic substrate in the presence of an external magnetic field. By tuning the concentration of ferrofluid droplets and controlling the magnetic field, barrel-like, cone-like, and two-tower-like supraparticles were obtained. These assembled supraparticles preserved the superparamagnetism of the original nanoparticles. Moreover, other colloids can easily be integrated into the ferrofluid suspension to produce, by co-assembly, anisotropic binary supraparticles with additional functions. Additionally, the magnetic and anisotropic nature of the resulting supraparticles was harnessed to prepare magnetically actuable microswimmers.
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Affiliation(s)
- Minghan Hu
- Max Planck Institute
for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Hans-Jürgen Butt
- Max Planck Institute
for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Katharina Landfester
- Max Planck Institute
for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Markus B. Bannwarth
- Max Planck Institute
for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Sanghyuk Wooh
- School of Chemical
Engineering and Materials Science, Chung-Ang
University, Seoul 06974, Republic of Korea
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14
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Jenjob R, Seidi F, Crespy D. Recent advances in polymerizations in dispersed media. Adv Colloid Interface Sci 2018; 260:24-31. [PMID: 30170689 DOI: 10.1016/j.cis.2018.08.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 08/06/2018] [Accepted: 08/07/2018] [Indexed: 01/07/2023]
Abstract
Advances in chemistry heterophase polymerizations reflect new developments in polymer chemistry. Although some few polymerization reactions cannot be performed in dispersed media, new polymerization reactions can still benefit from advantages of heterophase reactions, which are fast kinetics due to high local concentration of reagents and advantageous heat exchange. We describe here advances in heterophase polymerizations, with a focus on miniemulsion polymerization, which are mainly driven by academic interest for biomedicine and energy science. Click-reactions in dispersion are particularly interesting because they are bioorthogonals. Synthesis of highly crosslinked polymer colloids, especially with conjugated polymers, has found applications in gas storage, catalysis, and production of energy. Finally, we show how spatial segregation in heterophase polymerization can help to obtain polymer materials with unique structures.
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Affiliation(s)
- Ratchapol Jenjob
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 21210 Rayong, Thailand
| | - Farzad Seidi
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 21210 Rayong, Thailand
| | - Daniel Crespy
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 21210 Rayong, Thailand.
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15
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Guo D, Li C, Wang Y, Li Y, Song Y. Precise Assembly of Particles for Zigzag or Linear Patterns. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Dan Guo
- Key Laboratory of Green Printing; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
- Engineering Research Center of Nanomaterials for Green Printing Technology; Beijing National Laboratory for Molecular Sciences; Beijing 100190 P. R. China
- Department of Chemistry; University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Chang Li
- Key Laboratory of Green Printing; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
- Engineering Research Center of Nanomaterials for Green Printing Technology; Beijing National Laboratory for Molecular Sciences; Beijing 100190 P. R. China
- Department of Chemistry; University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Yang Wang
- Key Laboratory of Green Printing; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
- Engineering Research Center of Nanomaterials for Green Printing Technology; Beijing National Laboratory for Molecular Sciences; Beijing 100190 P. R. China
| | - Yanan Li
- Key Laboratory of Green Printing; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
- Engineering Research Center of Nanomaterials for Green Printing Technology; Beijing National Laboratory for Molecular Sciences; Beijing 100190 P. R. China
- Department of Chemistry; University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Yanlin Song
- Key Laboratory of Green Printing; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
- Engineering Research Center of Nanomaterials for Green Printing Technology; Beijing National Laboratory for Molecular Sciences; Beijing 100190 P. R. China
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16
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Guo D, Li C, Wang Y, Li Y, Song Y. Precise Assembly of Particles for Zigzag or Linear Patterns. Angew Chem Int Ed Engl 2017; 56:15348-15352. [PMID: 29024248 DOI: 10.1002/anie.201709115] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 09/29/2017] [Indexed: 11/09/2022]
Abstract
Precise control of particles assembly has tremendous potential for fabricating intricate structures and functional materials. However, it is still a challenge to achieve one-dimensional assembly with precisely controlled morphology. An effective strategy is reported to precisely assemble particles into well-defined patterns by liquid confinement through controlling the viscosity of the assembly system. It is found that high viscosity of the system impedes particles rearrangement and facilitates the generation of zigzag or twined zigzag assembly structures, while low viscosity of the system allows particles to rearrange into linear or zipper structures driven by lowering the surface deformation of the liquid. As a result, precise control of different assembly patterns can be achieved through tuning the viscosity of solvent and size confinement ratios. This facile approach shows generality for particles assembly of different sizes and materials.
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Affiliation(s)
- Dan Guo
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China.,Department of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Chang Li
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China.,Department of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yang Wang
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China
| | - Yanan Li
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China.,Department of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yanlin Song
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China
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17
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Hu M, Korschelt K, Daniel P, Landfester K, Tremel W, Bannwarth MB. Fibrous Nanozyme Dressings with Catalase-Like Activity for H 2O 2 Reduction To Promote Wound Healing. ACS APPLIED MATERIALS & INTERFACES 2017; 9:38024-38031. [PMID: 29019391 DOI: 10.1021/acsami.7b12212] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The concentrations of the redox pair hydrogen peroxide (H2O2) and oxygen (O2) can promote or decelerate the progression and duration of the wound healing process. Although H2O2 can reach critically high concentrations and prohibit healing, a sufficient O2 inflow to the wound is commonly desired. Herein, we describe the fabrication and use of a membrane that can contemptuously decrease H2O2 and increase O2 levels. Therefore, hematite nanozyme particles were integrated into electrospun and cross-linked poly(vinyl alcohol) membranes. Within the dual-compound membrane, the polymeric mesh provides a porous scaffold with high water permeability and the nanozymes act as a catalyst with catalase-like activity that can efficiently convert H2O2 into O2, as shown by a catalase assay. When comparing the growth of fibroblasts at an H2O2 concentration of 50 μM, the growth was largely enhanced when applying the nanozyme dressing. Thus, application of the nanozyme dressing can significantly reduce the harmful effect of higher H2O2 concentrations. The described catalytic membranes could be used in the future to provide an improved environment for cell proliferation in wounds and thus applied as advanced wound healing dressings.
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Affiliation(s)
- Minghan Hu
- Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
| | - Karsten Korschelt
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität , Duesbergweg 10-14, 55128 Mainz, Germany
| | - Phillip Daniel
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität , Duesbergweg 10-14, 55128 Mainz, Germany
| | - Katharina Landfester
- Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
| | - Wolfgang Tremel
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität , Duesbergweg 10-14, 55128 Mainz, Germany
| | - Markus B Bannwarth
- Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
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18
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Jiang S, Mable CJ, Armes SP, Crespy D. Directed Assembly of Soft Anisotropic Nanoparticles by Colloid Electrospinning. Macromol Rapid Commun 2016; 37:1598-1602. [PMID: 27483395 DOI: 10.1002/marc.201600270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 06/02/2016] [Indexed: 11/08/2022]
Abstract
Directed assembly of triblock copolymer worms to produce nanostructured fibers is achieved via colloid electrospinning. These copolymer worms are conveniently prepared by polymerization-induced self-assembly in concentrated aqueous dispersion. Addition of a second water-soluble component, poly(vinyl alcohol), is found to be critical for the production of well-defined fibers: trial experiments performed using the worms alone produce only spherical microparticles. Transmission electron microscopy studies confirm that the worm morphology survives electrospinning and the worms become orientated parallel to the main axis of the fibers during their generation. The average deviant angle (θdev ) between the worm orientation and fiber axis decreases from 17° to 9° as the worm/PVA mass ratio increases from 1.15:1 to 5:1, indicating a greater degree of worm alignment within fibers with higher worm contents and smaller fiber diameters. Thus triblock copolymer fibers of ≈300 ± 120 nm diameter can be readily produced that comprise aligned worms on the nanoscale.
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Affiliation(s)
- Shuai Jiang
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.,Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
| | - Charlotte J Mable
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF, UK
| | - Steven P Armes
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF, UK.
| | - Daniel Crespy
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany. .,Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand.
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19
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Estupiñán D, Bannwarth MB, Mylon SE, Landfester K, Muñoz-Espí R, Crespy D. Multifunctional clickable and protein-repellent magnetic silica nanoparticles. NANOSCALE 2016; 8:3019-3030. [PMID: 26781542 DOI: 10.1039/c5nr08258g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Silica nanoparticles are versatile materials whose physicochemical surface properties can be precisely adjusted. Because it is possible to combine several functionalities in a single carrier, silica-based materials are excellent candidates for biomedical applications. However, the functionality of the nanoparticles can get lost upon exposure to biological media due to uncontrolled biomolecule adsorption. Therefore, it is important to develop strategies that reduce non-specific protein-particle interactions without losing the introduced surface functionality. Herein, organosilane chemistry is employed to produce magnetic silica nanoparticles bearing differing amounts of amino and alkene functional groups on their surface as orthogonally addressable chemical functionalities. Simultaneously, a short-chain zwitterion is added to decrease the non-specific adsorption of biomolecules on the nanoparticles surface. The multifunctional particles display reduced protein adsorption after incubation in undiluted fetal bovine serum as well as in single protein solutions (serum albumin and lysozyme). Besides, the particles retain their capacity to selectively react with biomolecules. Thus, they can be covalently bio-functionalized with an antibody by means of orthogonal click reactions. These features make the described multifunctional silica nanoparticles a promising system for the study of surface interactions with biomolecules, targeting, and bio-sensing.
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Affiliation(s)
- Diego Estupiñán
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Markus B Bannwarth
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Steven E Mylon
- Lafayette College, Department of Chemistry, Easton, PA 18042, USA
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Rafael Muñoz-Espí
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany and Institute of Materials Science (ICMUV), University of Valencia, PO Box 22085, 46071 Valencia, Spain.
| | - Daniel Crespy
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany and Vidyasirimedhi Institute of Science and Technology (VISTEC), School of Molecular Science and Engineering, Department of Material Science and Engineering, Rayong, Thailand.
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20
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Schoth A, Keith AD, Landfester K, Muñoz-Espí R. Silanization as a versatile functionalization method for the synthesis of polymer/magnetite hybrid nanoparticles with controlled structure. RSC Adv 2016. [DOI: 10.1039/c6ra08896a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
We compare the use of different trimethoxysilane compounds for the surface functionalization of magnetite nanoparticles and their subsequent incorporation in hybrid particles formed byin situminiemulsion polymerization.
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Affiliation(s)
| | | | | | - Rafael Muñoz-Espí
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
- Institute of Materials Science (ICMUV)
- Universitat de València
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21
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Sun T, Shu L, Shen J, Ruan C, Zhao Z, Jiang C. Photo and redox-responsive vesicles assembled from Bola-type superamphiphiles. RSC Adv 2016. [DOI: 10.1039/c6ra05808f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Photo and redox-responsive vesicles assembled from “Bola-type” superamphiphiles were developed.
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Affiliation(s)
- Tao Sun
- Key Laboratory of Smart Drug Delivery (Ministry of Education)
- State Key Laboratory of Medical Neurobiology
- Department of Pharmaceutics
- School of Pharmacy
- Fudan University
| | - Lan Shu
- Key Laboratory of Smart Drug Delivery (Ministry of Education)
- State Key Laboratory of Medical Neurobiology
- Department of Pharmaceutics
- School of Pharmacy
- Fudan University
| | - Jian Shen
- School of Chemistry and Chemical Engineering
- Weifang University
- Weifang 261061
- PR China
| | - Chunhui Ruan
- Key Laboratory of Smart Drug Delivery (Ministry of Education)
- State Key Laboratory of Medical Neurobiology
- Department of Pharmaceutics
- School of Pharmacy
- Fudan University
| | - Zhifeng Zhao
- Key Laboratory of Smart Drug Delivery (Ministry of Education)
- State Key Laboratory of Medical Neurobiology
- Department of Pharmaceutics
- School of Pharmacy
- Fudan University
| | - Chen Jiang
- Key Laboratory of Smart Drug Delivery (Ministry of Education)
- State Key Laboratory of Medical Neurobiology
- Department of Pharmaceutics
- School of Pharmacy
- Fudan University
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22
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Ulrich S, Hirsch C, Diener L, Wick P, Rossi RM, Bannwarth MB, Boesel LF. Preparation of ellipsoid-shaped supraparticles with modular compositions and investigation of shape-dependent cell-uptake. RSC Adv 2016. [DOI: 10.1039/c6ra19861a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hybrid ellipsoid-shaped supraparticles consisting of different nanomaterials are fabricated and the influence of the supraparticle shape on cell-uptake is investigated.
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Affiliation(s)
- S. Ulrich
- Empa
- Swiss Federal Laboratories for Materials Science and Technology. Laboratory for Protection and Physiology. Lerchenfeldstrasse 5
- CH-9014 St. Gallen
- Switzerland
| | - C. Hirsch
- Empa
- Swiss Federal Laboratories for Materials Science and Technology. Particle-Biology Interactions Laboratory. Lerchenfeldstrasse 5
- CH-9014 St. Gallen
- Switzerland
| | - L. Diener
- Empa
- Swiss Federal Laboratories for Materials Science and Technology. Particle-Biology Interactions Laboratory. Lerchenfeldstrasse 5
- CH-9014 St. Gallen
- Switzerland
| | - P. Wick
- Empa
- Swiss Federal Laboratories for Materials Science and Technology. Particle-Biology Interactions Laboratory. Lerchenfeldstrasse 5
- CH-9014 St. Gallen
- Switzerland
| | - R. M. Rossi
- Empa
- Swiss Federal Laboratories for Materials Science and Technology. Laboratory for Protection and Physiology. Lerchenfeldstrasse 5
- CH-9014 St. Gallen
- Switzerland
| | - M. B. Bannwarth
- Empa
- Swiss Federal Laboratories for Materials Science and Technology. Laboratory for Protection and Physiology. Lerchenfeldstrasse 5
- CH-9014 St. Gallen
- Switzerland
| | - L. F. Boesel
- Empa
- Swiss Federal Laboratories for Materials Science and Technology. Laboratory for Protection and Physiology. Lerchenfeldstrasse 5
- CH-9014 St. Gallen
- Switzerland
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23
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Bharti B, Fameau AL, Rubinstein M, Velev OD. Nanocapillarity-mediated magnetic assembly of nanoparticles into ultraflexible filaments and reconfigurable networks. NATURE MATERIALS 2015; 14:1104-9. [PMID: 26237128 PMCID: PMC4816044 DOI: 10.1038/nmat4364] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 06/26/2015] [Indexed: 05/17/2023]
Abstract
The fabrication of multifunctional materials with tunable structure and properties requires programmed binding of their building blocks. For example, particles organized in long-ranged structures by external fields can be bound permanently into stiff chains through electrostatic or van der Waals attraction, or into flexible chains through soft molecular linkers such as surface-grafted DNA or polymers. Here, we show that capillarity-mediated binding between magnetic nanoparticles coated with a liquid lipid shell can be used for the assembly of ultraflexible microfilaments and network structures. These filaments can be magnetically regenerated on mechanical damage, owing to the fluidity of the capillary bridges between nanoparticles and their reversible binding on contact. Nanocapillary forces offer opportunities for assembling dynamically reconfigurable multifunctional materials that could find applications as micromanipulators, microbots with ultrasoft joints, or magnetically self-repairing gels.
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Affiliation(s)
- Bhuvnesh Bharti
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, USA
| | - Anne-Laure Fameau
- National Institute of French Agricultural Research, Nantes 44300, France
| | - Michael Rubinstein
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290, USA
| | - Orlin D. Velev
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, USA
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24
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Kralj S, Makovec D. Magnetic Assembly of Superparamagnetic Iron Oxide Nanoparticle Clusters into Nanochains and Nanobundles. ACS NANO 2015; 9:9700-7. [PMID: 26394039 DOI: 10.1021/acsnano.5b02328] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
We report on the syntheses of magnetoresponsive, superparamagnetic nanostructures with highly anisotropic shapes, i.e., nanochains of controlled length and their bundles (nanobundles). These nanochains and nanobundles were obtained by the simultaneous magnetic assembly of superparamagnetic nanoparticle clusters (SNCs) and the fixation of the assembled SNCs with an additional layer of deposited silica, produced by a sol-gel process. This low-cost approach provides excellent length control of the short nanochains (approximately 6 or 14 SNCs per nanochain) and fine-tuning of the spacing between the neighboring SNCs inside an individual nanochain. Our magnetically responsive superparamagnetic nanostructures have a controlled aspect ratio, a uniform size, and a well-defined shape, and they express good colloidal stability. This general approach should lead to new, advanced applications of the nanochains and nanobundles in the treatment of cancer and in the ability to magnetically manipulate liquid and photonic crystals.
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Affiliation(s)
- Slavko Kralj
- Department for Materials Synthesis, Jožef Stefan Institute , Jamova 39, 1000 Ljubljana, Slovenia
- Nanos SCI, Nanos Scientificae d.o.o. , Teslova 30, 1000 Ljubljana, Slovenia
| | - Darko Makovec
- Department for Materials Synthesis, Jožef Stefan Institute , Jamova 39, 1000 Ljubljana, Slovenia
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25
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Estupiñán D, Bannwarth MB, Landfester K, Crespy D. Size-Dependent Self-Assembly of Anisotropic Silica-Coated Hybrid Nanoparticles. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500239] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Diego Estupiñán
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Markus B. Bannwarth
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
- Graduate School Materials Science in Mainz; Staudinger Weg 9 55128 Mainz Germany
| | | | - Daniel Crespy
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
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26
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Ebert S, Bannwarth MB, Musyanovych A, Landfester K, Münnemann K. How morphology influences relaxivity - comparative study of superparamagnetic iron oxide-polymer hybrid nanostructures. CONTRAST MEDIA & MOLECULAR IMAGING 2015; 10:456-64. [PMID: 26153149 DOI: 10.1002/cmmi.1648] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 04/30/2015] [Accepted: 05/06/2015] [Indexed: 12/12/2022]
Abstract
Superparamagnetic iron oxides (SPIOs) are widely used in MRI as T2 contrast agents, and interest is still growing. Here, the T2 relaxivity of three different SPIO-polymer hybrid morphologies, i.e. homogeneously distributed iron oxide within a polymer matrix, Janus-like nanoparticles and polymer nanocapsules containing iron oxides, is studied. Making use of calculations based on theory for agglomerated systems, the obtained T2 values could be predicted for all different morphologies, except for nanocapsules. Nanocapsules, in contrast to full spheres, allow for water exchange between encapsulated water and bulk water, and thus have two contributions to relaxivity. One originates from the capsules acting as a weakly magnetized cluster and the other stems from the individual SPIOs inside the capsule. Therefore, the relaxivities were also computed using an empirical equation found in the literature, which considers water exchange, resulting in a better T2 forecast for the nanocapsules. The presented study is the first example of a comparison between measured and calculated relaxivities of nanocapsules.
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Affiliation(s)
- Sandro Ebert
- Max Planck Institute for Polymer Research, Mainz, Germany
| | - Markus B Bannwarth
- Max Planck Institute for Polymer Research, Mainz, Germany.,Graduate School Materials Science in Mainz, Mainz, Germany
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27
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Bannwarth MB, Utech S, Ebert S, Weitz DA, Crespy D, Landfester K. Colloidal polymers with controlled sequence and branching constructed from magnetic field assembled nanoparticles. ACS NANO 2015; 9:2720-8. [PMID: 25695858 DOI: 10.1021/nn5065327] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The assembly of nanoparticles into polymer-like architectures is challenging and usually requires highly defined colloidal building blocks. Here, we show that the broad size-distribution of a simple dispersion of magnetic nanocolloids can be exploited to obtain various polymer-like architectures. The particles are assembled under an external magnetic field and permanently linked by thermal sintering. The remarkable variety of polymer-analogue architectures that arises from this simple process ranges from statistical and block copolymer-like sequencing to branched chains and networks. This library of architectures can be realized by controlling the sequencing of the particles and the junction points via a size-dependent self-assembly of the single building blocks.
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Affiliation(s)
- Markus B Bannwarth
- †Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- §Graduate School of Materials Science in Mainz, Staudinger Weg 9, 55128 Mainz, Germany
- ∥Empa, Laboratory for Protection and Physiology, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Stefanie Utech
- ‡Department of Physics and School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Sandro Ebert
- †Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - David A Weitz
- ‡Department of Physics and School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Daniel Crespy
- †Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Katharina Landfester
- †Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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28
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Mathias F, Fokina A, Landfester K, Tremel W, Schmid F, Char K, Zentel R. Morphology control in biphasic hybrid systems of semiconducting materials. Macromol Rapid Commun 2015; 36:959-83. [PMID: 25737161 DOI: 10.1002/marc.201400688] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 01/23/2015] [Indexed: 11/10/2022]
Abstract
Simple blends of inorganic nanocrystals and organic (semiconducting) polymers usually lead to macroscopic segregation. Thus, such blends typically exhibit inferior properties than expected. To overcome the problem of segregation, polymer coated nanocrystals (nanocomposites) have been developed. Such nanocomposites are highly miscible within the polymer matrix. In this Review, a summary of synthetic approaches to achieve stable nanocomposites in a semiconducting polymer matrix is presented. Furthermore, a theoretical background as well as an overview concerning morphology control of inorganic NCs in polymer matrices are provided. In addition, the morphologic behavior of highly anisotropic nanoparticles (i.e. liquid crystalline phase formation of nanorod-composites) and branched nanoparticles (spatial orientation of tetrapods) is described. Finally, the morphology requirements for the application of inorganic/organic hybrid systems in light emitting diodes and solar cells are discussed, and potential solutions to achieve the required morphologies are provided.
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Affiliation(s)
- Florian Mathias
- Institute for Organic Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55099, Mainz, Germany
| | - Ana Fokina
- Institute for Organic Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55099, Mainz, Germany.,Graduate School Materials Science in Mainz, Staudinger Weg 9, 55128, Mainz, Germany
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Wolfgang Tremel
- Institute for Inorganic and Analytical Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55099, Mainz, Germany
| | - Friederike Schmid
- Institute for Physics, Johannes Gutenberg-University, Staudingerweg 7, 55099, Mainz, Germany
| | - Kookheon Char
- School of Chemical and Biological Engineering, The National Creative Research Initiative Center for Intelligent Hybrids, The WCU Program of Chemical Convergence for Energy & Environment, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-744, Korea.,Fellow of the GFC (Gutenberg Research College), Johannes Gutenberg-University, 55099, Mainz, Germany
| | - Rudolf Zentel
- Institute for Organic Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55099, Mainz, Germany
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29
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Yan J, Bae SC, Granick S. Colloidal superstructures programmed into magnetic Janus particles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:874-879. [PMID: 25503513 DOI: 10.1002/adma.201403857] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 10/24/2014] [Indexed: 06/04/2023]
Abstract
By engineering thin magnetic films onto homogeneous colloidal particles, various crystalline lattices are induced from simple magnetic Janus spheres. In situ formation of dicolloids amplifies the diversity of achievable dynamic structures. The competition between shape anisotropy and dipole orientation generates mesoscopic isomerism. This opens design space for anisotropic building blocks for smart colloidal materials.
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Affiliation(s)
- Jing Yan
- Departments of Materials Science and Engineering, Chemistry and PhysicsUniversity of Illinois at Urbana-Champaign, 1304 W. Green St., Urbana, Illinois, 61801, USA
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30
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Bannwarth MB, Camerlo A, Ulrich S, Jakob G, Fortunato G, Rossi RM, Boesel LF. Ellipsoid-shaped superparamagnetic nanoclusters through emulsion electrospinning. Chem Commun (Camb) 2015; 51:3758-61. [DOI: 10.1039/c4cc10076j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Ellipsoid-shaped nanoclusters composed of single superparamagnetic nanoparticles and possessing a high saturation magnetization can be generated by emulsion electrospinning.
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Affiliation(s)
- Markus B. Bannwarth
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- Laboratory for Protection and Physiology
- Switzerland
| | - Agathe Camerlo
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- Laboratory for Protection and Physiology
- Switzerland
| | - Sebastian Ulrich
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- Laboratory for Protection and Physiology
- Switzerland
| | - Gerhard Jakob
- Institute of Physics
- University of Mainz
- 55128 Mainz
- Germany
| | - Giuseppino Fortunato
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- Laboratory for Protection and Physiology
- Switzerland
| | - René M. Rossi
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- Laboratory for Protection and Physiology
- Switzerland
| | - Luciano F. Boesel
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- Laboratory for Protection and Physiology
- Switzerland
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31
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Bharti B, Fameau AL, Velev OD. Magnetophoretic assembly of flexible nanoparticles/lipid microfilaments. Faraday Discuss 2015; 181:437-48. [DOI: 10.1039/c4fd00272e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The directed assembly of colloidal particles into linear chains and clusters is of fundamental and practical importance. In this study we characterize and analyse the mechanism of the magnetic field driven assembly of lipid-coated iron oxide nanoparticles into flexible microfilaments. Recently we showed that nanocapillary lipid binding can form a new class of magnetic nanoparticle-lipid microfilaments with unprecedented flexibility and self-healing properties. In the presence of a uniform magnetic field, the magnetophoretic attraction of the particles combined with interparticle dipole–dipole attraction drives the microfilament assembly. The fluid like lipid layer on the particles leads to stickiness on the surface of the filaments and the magnetic field concentration overcomes the potential electrostatic repulsion in the water phase. The lipid capillary bridges formed between the particles facilitate their permanent binding and sustain the flexible microfilament structure. We demonstrate that this surface stickiness combined with the magnetic response of the filaments can be used further to twist, bend and bundle the microfilaments into unusual structures.
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Affiliation(s)
- Bhuvnesh Bharti
- Department of Chemical and Biomolecular Engineering
- North Carolina State University
- Raleigh
- USA
| | | | - Orlin D. Velev
- Department of Chemical and Biomolecular Engineering
- North Carolina State University
- Raleigh
- USA
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32
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Ma Y, Qiao M, Chen Y, Hou C, Zhang B, Zhang Q. Fabrication of electromagnetic Fe3O4@polyaniline nanofibers with high aspect ratio. RSC Adv 2015. [DOI: 10.1039/c4ra14723e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
High aspect ratio Fe3O4@polyaniline nanofibers prepared show better magnetization saturation and conductivity value compared to Fe3O4@polyaniline microspheres.
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Affiliation(s)
- Yong Ma
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Mingtao Qiao
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Yanhui Chen
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Chunping Hou
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Baoliang Zhang
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Qiuyu Zhang
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
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33
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Abstract
Proteins usually exist in multiple conformational states in solution. High pressure NMR spectroscopy is a well-suited method to identify these states. In addition, these states can be characterized by their thermodynamic parameters, the free enthalpies at ambient pressure, the partial molar volumes, and the partial molar compressibility that can be obtained from the analysis of the high pressure NMR data. Two main types of states of proteins exist, functional states and folding states. There is a strong link between these two types, the functional states represent essential folding states (intermediates), other folding states may have no functional meaning (optional folding states). In this chapter, this concept is tested on the Ras protein, an important proto-oncogen in humans where all substates required by theory can be identified experimentally by high pressure NMR spectroscopy. Finally, we show how these data can be used to develop allosteric inhibitors of proteins.
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34
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Correction: Hood, M.A., et al. Synthetic Strategies in the Preparation of Polymer/Inorganic Hybrid Nanoparticles. Materials 2014, 7, 4057-4087. MATERIALS (BASEL, SWITZERLAND) 2014; 7:7583-7614. [PMID: 28795684 PMCID: PMC5512675 DOI: 10.3390/ma7117583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 08/21/2014] [Indexed: 11/16/2022]
Abstract
In [1], several sentences were repeated three times on pages 4062, 4063 and 4065. In addition, many references were incorrect. The errors were introduced by the editorial office during the editing process. We apologize for this mistake and any inconvenience this may have caused to authors and readers. The corrected manuscript is given below.[...].
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35
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Hofmann D, Tenzer S, Bannwarth MB, Messerschmidt C, Glaser SF, Schild H, Landfester K, Mailänder V. Mass spectrometry and imaging analysis of nanoparticle-containing vesicles provide a mechanistic insight into cellular trafficking. ACS NANO 2014; 8:10077-10088. [PMID: 25244389 DOI: 10.1021/nn502754c] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Rational design of nanocarriers for drug delivery approaches requires an unbiased knowledge of uptake mechanisms and intracellular trafficking pathways. Here we dissected these processes using a quantitative proteomics approach. We isolated intracellular vesicles containing superparamagnetic iron oxide polystyrene nanoparticles and analyzed their protein composition by label-free quantitative mass spectrometry. The proteomic snapshot of organelle marker proteins revealed that an atypical macropinocytic-like mechanism mediated the entry of nanoparticles. We show that the entry mechanism is controlled by actin reorganization, atypical macropinocytic signaling, and ADP-ribosylation factor 1. Additionally, our proteomics data demonstrated a central role for multivesicular bodies and multilamellar lysosomes in trafficking and final nanoparticle storage. This was confirmed by confocal microscopy and cryo-TEM measurements. By quantitatively analyzing the protein composition of nanoparticle-containing vesicles, our study clearly defines the routes of nanoparticle entry, intracellular trafficking, and the proteomic milieu of a nanoparticle-containing vesicle.
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Affiliation(s)
- Daniel Hofmann
- Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
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36
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Abramson S, Dupuis V, Neveu S, Beaunier P, Montero D. Preparation of highly anisotropic cobalt ferrite/silica microellipsoids using an external magnetic field. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:9190-9200. [PMID: 25029515 DOI: 10.1021/la501547q] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Magnetic cobalt ferrite/silica microparticles having both an original morphology and an anisotropic nanostructure are synthesized through the use of an external magnetic field and nanoparticles characterized by a high magnetic anisotropy. The association of these two factors implies that the ESE (emulsion and solvent evaporation) sol-gel method employed here allows the preparation of silica microellipsoids containing magnetic nanoparticles aggregated in large chains. It is clearly shown that without this combination, microspheres characterized by an isotropic distribution of the magnetic nanoparticles are obtained. While the chaining of the cobalt ferrite nanoparticles inside the silica matrix is related to the increase of their magnetic dipolar interactions, the ellipsoidal shape of the microparticles may be explained by the elongation of the sol droplets in the direction of the external magnetic field during the synthesis. Because of their highly anisotropic structure, these microparticles exhibit permanent magnetic moments, which are responsible, at a larger scale, for the existence of strong magnetic dipolar interactions. Therefore, when they are dispersed in water, the microellipsoids self-assemble into large and irregular chains. These interactions can be reinforced by the use of external magnetic field, allowing the preparation of very large permanent chains. This research illustrates how nanostructured particles exhibiting complex architectures can be elaborated through simple, fast, and low-cost methods, such as the use of external fields in combination with soft chemistry.
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Affiliation(s)
- Sébastien Abramson
- Laboratoire de Physicochimie des Electrolytes, et Nanosystèmes Interfaciaux, PHENIX (UMR 8234 UPMC-CNRS), ‡Laboratoire de Réactivité de Surface, LRS (UMR 7197 UPMC-CNRS), and §Institut des Matériaux de Paris Centre, IMPC (FR 2482), Université Pierre et Marie Curie , 4, place Jussieu, 75 252 Paris Cedex 05, France
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37
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Bannwarth M, Crespy D. Combining the best of two worlds: nanoparticles and nanofibers. Chem Asian J 2014; 9:2030-5. [PMID: 25044813 DOI: 10.1002/asia.201402316] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Indexed: 12/16/2022]
Abstract
The preparation and applications of nanoparticles and nanofibers are widely described in the literature. Both types of materials have specific advantages but also drawbacks. We discuss here the methods to fabricate nanofibers from nanoparticles and vice versa by template-free methods and colloid-electrospinning. Nanoparticles and nanofibers can be also synergistically combined to yield nanostructured constructs that display highly advantageous properties such as good mechanical integrity, double protection of encapsulated substances, or the possibility to co-encapsulate payloads with different polarities.
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Affiliation(s)
- Markus Bannwarth
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz (Germany)
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38
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Bharti B, Findenegg GH, Velev OD. Analysis of the field-assisted permanent assembly of oppositely charged particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:6577-87. [PMID: 24836191 DOI: 10.1021/la5009335] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We characterize experimentally and analyze analytically a novel electric-field-assisted process for the assembly of permanent chains of oppositely charged microparticles in an aqueous environment. Long chains of oppositely charged particles are rapidly formed when an external electric field is applied and break up into permanent linear fragments upon switching off the field. The resulting secondary chains are stabilized by attractive electrostatic and van der Waals interactions between the particles. We find that the length of the permanent chains is strongly dependent on the relative size (microsphere diameter D) of small and large particles and can be tuned by varying the particle size ratio s = Dsm/Dlg and particle number ratio r = Nsm/Nlg. Three latex microsphere systems of different particle size ratio, s = 0.9, 0.45, and 0.225, were characterized at different particle number ratios r by determining experimentally the length distribution of the permanent chains. The results are compared with statistical models based on a one-step or two-step process of forming the primary chains. We find that the one-step model is applicable to the system of similarly sized particles (s = 0.9) and the two-step chaining model is applicable to the system of dissimilarly sized particles (s = 0.225), where the large particles form chains first and the small ones serve as binders, which are later drawn in the junctions. Long permanent chains are formed only from particles of dissimilar size for which our model predicts a linear increase in the mean chain length with increasing r. On the basis of these results, we formulate a set of assembly rules for permanent colloidal chain formation by oppositely charged particles. The results make possible the precise large-scale formation of particle chains of any length, which can serve as components in new gels, biomaterials, and fluids with controlled rheology.
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Affiliation(s)
- Bhuvnesh Bharti
- Department of Chemical and Biomolecular Engineering, North Carolina State University , Raleigh, North Carolina 27695, United States
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39
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Hood MA, Mari M, Muñoz-Espí R. Synthetic Strategies in the Preparation of Polymer/Inorganic Hybrid Nanoparticles. MATERIALS (BASEL, SWITZERLAND) 2014; 7:4057-4087. [PMID: 28788665 PMCID: PMC5453225 DOI: 10.3390/ma7054057] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 04/12/2014] [Accepted: 05/09/2014] [Indexed: 01/05/2023]
Abstract
This article reviews the recent advances and challenges in the preparation of polymer/inorganic hybrid nanoparticles. We mainly focus on synthetic strategies, basing our classification on whether the inorganic and the polymer components have been formed in situ or ex situ, of the hybrid material. Accordingly, four types of strategies are identified and described, referring to recent examples: (i) ex situ formation of the components and subsequent attachment or integration, either by covalent or noncovalent bonding; (ii) in situ polymerization in the presence of ex situ formed inorganic nanoparticles; (iii) in situ precipitation of the inorganic components on or in polymer structures; and (iv) strategies in which both polymer and inorganic component are simultaneously formed in situ.
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Affiliation(s)
- Matthew A Hood
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55118 Mainz, Germany.
| | - Margherita Mari
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55118 Mainz, Germany.
| | - Rafael Muñoz-Espí
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55118 Mainz, Germany.
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40
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Schenkel JH, Samanta A, Ravoo BJ. Self-assembly of soft hybrid materials directed by light and a magnetic field. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:1076-1080. [PMID: 24277574 DOI: 10.1002/adma.201304689] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Indexed: 06/02/2023]
Abstract
Dual-responsive soft matter: A soft hybrid material composed of superparamagnetic nanoparticles and cyclodextrin vesicles self-assembles in microscale linear aggregates in water in response to magnetic field as well as light.
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Affiliation(s)
- Jan Hendrik Schenkel
- Organic Chemistry Institute and Graduate School of Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
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41
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Self-assembled tunable networks of sticky colloidal particles. Nat Commun 2014; 5:3117. [PMID: 24445324 DOI: 10.1038/ncomms4117] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 12/16/2013] [Indexed: 01/12/2023] Open
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