51
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Contini C, Hindley JW, Macdonald TJ, Barritt JD, Ces O, Quirke N. Size dependency of gold nanoparticles interacting with model membranes. Commun Chem 2020; 3:130. [PMID: 33829115 PMCID: PMC7610534 DOI: 10.1038/s42004-020-00377-y] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The rapid development of nanotechnology has led to an increase in the number and variety of engineered nanomaterials in the environment. Gold nanoparticles (AuNPs) are an example of a commonly studied nanomaterial whose highly tailorable properties have generated significant interest through a wide range of research fields. In the present work, we characterise the AuNP-lipid membrane interaction by coupling qualitative data with quantitative measurements of the enthalpy change of interaction. We investigate the interactions between citrate-stabilised AuNPs ranging from 5 to 60 nm in diameter and large unilamellar vesicles acting as a model membrane system. Our results reveal the existence of two critical AuNP diameters which determine their fate when in contact with a lipid membrane. The results provide new insights into the size dependent interaction between AuNPs and lipid bilayers which is of direct relevance to nanotoxicology and to the design of NP vectors.
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Affiliation(s)
- Claudia Contini
- grid.7445.20000 0001 2113 8111Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, Wood Lane, W12 0BZ London, UK
| | - James W. Hindley
- grid.7445.20000 0001 2113 8111Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, Wood Lane, W12 0BZ London, UK ,grid.7445.20000 0001 2113 8111Institute of Chemical Biology, Molecular Sciences Research Hub, Imperial College London, White City Campus, Wood Lane, W12 0BZ London, UK
| | - Thomas J. Macdonald
- grid.7445.20000 0001 2113 8111Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, Wood Lane, W12 0BZ London, UK ,grid.83440.3b0000000121901201Department of Chemistry, University College London, Gordon Street, WC1H 0AJ London, UK
| | - Joseph D. Barritt
- grid.7445.20000 0001 2113 8111Department of Life Sciences, Imperial College London, South Kensington Campus, SW7 2AZ London, UK
| | - Oscar Ces
- grid.7445.20000 0001 2113 8111Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, Wood Lane, W12 0BZ London, UK ,grid.7445.20000 0001 2113 8111Institute of Chemical Biology, Molecular Sciences Research Hub, Imperial College London, White City Campus, Wood Lane, W12 0BZ London, UK
| | - Nick Quirke
- grid.7445.20000 0001 2113 8111Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, Wood Lane, W12 0BZ London, UK
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52
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Wang J, Lapinski N, Zhang X, Jagota A. Adhesive contact between cylindrical (Ebola) and spherical (SARS-CoV-2) viral particles and a cell membrane. MECHANICS OF SOFT MATERIALS 2020; 2:11. [PMID: 33511329 PMCID: PMC7453191 DOI: 10.1007/s42558-020-00026-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 07/22/2020] [Indexed: 01/07/2023]
Abstract
A critical event during the process of cell infection by a viral particle is attachment, which is driven by adhesive interactions and resisted by bending and tension. The biophysics of this process has been studied extensively, but the additional role of externally applied force or displacement has generally been neglected. In this work, we study the adhesive force-displacement response of viral particles against a cell membrane. We have built two models: one in which the viral particle is cylindrical (say, representative of a filamentous virus such as Ebola) and another in which it is spherical (such as SARS-CoV-2 and Zika). Our interest is in initial adhesion, in which case deformations are small, and the mathematical model for the system can be simplified considerably. The parameters that characterize the process combine into two dimensionless groups that represent normalized membrane bending stiffness and tension. In the limit where bending dominates, for sufficiently large values of normalized bending stiffness, there is no adhesion between viral particles and the cell membrane without applied force. (The zero external force contact width and pull-off force are both zero.) For large values of normalized membrane tension, the adhesion between virus and cell membrane is weak but stable. (The contact width at zero external force has a small value.) Our results for pull-off force and zero force contact width help to quantify conditions that could aid the development of therapies based on denying the virus entry into the cell by blocking its initial adhesion.
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Affiliation(s)
- Jiajun Wang
- Department of Bioengineering, Lehigh University, Bethlehem, PA USA
| | - Nicole Lapinski
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA USA
| | - Xiaohui Zhang
- Department of Bioengineering, Lehigh University, Bethlehem, PA USA
- Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA USA
| | - Anand Jagota
- Department of Bioengineering, Lehigh University, Bethlehem, PA USA
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA USA
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53
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Ali Doosti B, Fjällborg D, Kustanovich K, Jesorka A, Cans AS, Lobovkina T. Generation of interconnected vesicles in a liposomal cell model. Sci Rep 2020; 10:14040. [PMID: 32820180 PMCID: PMC7441142 DOI: 10.1038/s41598-020-70562-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 06/08/2020] [Indexed: 12/04/2022] Open
Abstract
We introduce an experimental method based upon a glass micropipette microinjection technique for generating a multitude of interconnected vesicles (IVs) in the interior of a single giant unilamellar phospholipid vesicle (GUV) serving as a cell model system. The GUV membrane, consisting of a mixture of soybean polar lipid extract and anionic phosphatidylserine, is adhered to a multilamellar lipid vesicle that functions as a lipid reservoir. Continuous IV formation was achieved by bringing a micropipette in direct contact with the outer GUV surface and subjecting it to a localized stream of a Ca2+ solution from the micropipette tip. IVs are rapidly and sequentially generated and inserted into the GUV interior and encapsulate portions of the micropipette fluid content. The IVs remain connected to the GUV membrane and are interlinked by short lipid nanotubes and resemble beads on a string. The vesicle chain-growth from the GUV membrane is maintained for as long as there is the supply of membrane material and Ca2+ solution, and the size of the individual IVs is controlled by the diameter of the micropipette tip. We also demonstrate that the IVs can be co-loaded with high concentrations of neurotransmitter and protein molecules and displaying a steep calcium ion concentration gradient across the membrane. These characteristics are analogous to native secretory vesicles and could, therefore, serve as a model system for studying secretory mechanisms in biological systems.
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Affiliation(s)
- Baharan Ali Doosti
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 9, 412 96, Göteborg, Sweden
| | - Daniel Fjällborg
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 9, 412 96, Göteborg, Sweden
| | - Kiryl Kustanovich
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 9, 412 96, Göteborg, Sweden
| | - Aldo Jesorka
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 9, 412 96, Göteborg, Sweden
| | - Ann-Sofie Cans
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 9, 412 96, Göteborg, Sweden
| | - Tatsiana Lobovkina
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 9, 412 96, Göteborg, Sweden.
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54
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Montis C, Caselli L, Valle F, Zendrini A, Carlà F, Schweins R, Maccarini M, Bergese P, Berti D. Shedding light on membrane-templated clustering of gold nanoparticles. J Colloid Interface Sci 2020; 573:204-214. [DOI: 10.1016/j.jcis.2020.03.123] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/30/2020] [Accepted: 03/31/2020] [Indexed: 12/30/2022]
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Zhang B, Zhu M, Li Z, Lung PS, Chrzanowski W, Kwok CT, Lu J, Li Q. Cellular fate of deformable needle-shaped PLGA-PEG fibers. Acta Biomater 2020; 112:182-189. [PMID: 32470525 DOI: 10.1016/j.actbio.2020.05.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 05/15/2020] [Accepted: 05/19/2020] [Indexed: 12/12/2022]
Abstract
Deformability of micro/nanometer sized particles plays an important role in particle-cell interactions and thus becomes a key parameter in carrier design in biomedicine application such as drug delivery and vaccinology. Yet the influence of material's deformability on the cellular fate of the particles as well as physiology response of live cells are to be understood. Here we show the cellular fate of needle shaped (high aspect ratio ~25) PLGA-PEG copolymer fibers depending on their deformability. We found that all the fibers entered murine macrophage cells (RAW 264.7) via phagocytosis. While the fibers of high apparent Young's modulus (average value = 872 kPa) maintained their original shape upon phagocytosis, their counterparts of low apparent Young's modulus (average value = 56 kPa) curled in cells. The observed deformation of fibers of low apparent Young's modulus in cells coincided with abnormal intracellular actin translocation and absence of lysosome/phagosome fusion in macrophages, suggesting the important role of material mechanical properties and mechano-related cellular pathway in affecting cell physiology. STATEMENT OF SIGNIFICANCE: Particles are increasingly important in the field of biomedicine, especially when they are serving as drug carriers. Physical cues, such as mechanical properties, were shown to provide insight into their stability and influence on physiology inside the cell. In the current study, we managed to fabricate 5 types of needle shaped PLGA-PEG fibers with controlled Young's modulus. We found that hard fibers maintained their original shape upon phagocytosis, while soft fibers were curled by actin compressive force inside the cell, causing abnormal actin translocation and impediment of lysosome/phagosome fusion, suggesting the important role of material mechanical properties and mechano-related cellular pathway in affecting cell physiology.
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56
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Li J, Wang J, Yao Q, Li T, Yan Y, Li Z, Zhang J. Why synthetic virus-like nanoparticles can achieve higher cellular uptake efficiency? NANOSCALE 2020; 12:14911-14918. [PMID: 32638793 DOI: 10.1039/d0nr03234d] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Experimental studies in recent years have demonstrated that the cellular uptake properties of nanoparticles can be improved by mimicking the spiky surfaces of viruses; however, little is known on how the surface topological structure of nanoparticles affects their translocation across the cell membrane. Here, by employing dissipative particle dynamics simulations, the interactions between virus-like nanoparticles (VLPs) and the lipid bilayer are investigated. The analysis of critical force for penetration demonstrates that VLPs with relatively longer and sparser spikes have better penetrability. The internalization pathway of VLPs illustrates that the spikes of VLPs can perturb the bilayer structure after VLPs adhere onto the bilayer. Furthermore, by comparing the translocation process of VLPs and spherical nanoparticles, it is found that the presence of spikes can help to increase the lateral defects in the bilayer, decrease the vertical deformation of the bilayer, and lower the density of nearby lipids during the translocation process. These effects of spikes jointly contribute to the superior penetrability of VLPs. It is expected that these findings not only enrich our understanding of how the surface topological structure affects the cellular uptake, but also pave the way for further development of VLPs for versatile biomedical applications.
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Affiliation(s)
- Jiawei Li
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, China. and Department of Chemical and Biomolecular Engineering, National University of Singapore, 117576, Singapore
| | - Junfeng Wang
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, China.
| | - Qiang Yao
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, China.
| | - Tao Li
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 117576, Singapore and Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, Shandong, China
| | - Youguo Yan
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, China. and Institute of Advanced Materials, China University of Petroleum (East China), Qingdao 266580, Shandong, China
| | - Zhen Li
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, China.
| | - Jun Zhang
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, China. and Institute of Advanced Materials, China University of Petroleum (East China), Qingdao 266580, Shandong, China
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57
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Richards DM. Receptor Models of Phagocytosis: The Effect of Target Shape. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1246:55-70. [PMID: 32399825 DOI: 10.1007/978-3-030-40406-2_4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Phagocytosis is a remarkably complex process, requiring simultaneous organisation of the cell membrane, the cytoskeleton, receptors and various signalling molecules. As can often be the case, mathematical modelling is able to penetrate some of this complexity, identifying the key biophysical components and generating understanding that would take far longer with a purely experimental approach. This chapter will review a particularly important class of phagocytosis model, championed in recent years, that primarily focuses on the role of receptors during the engulfment process. These models are pertinent to a host of unsolved questions in the subject, including the rate of cup growth during uptake, the role of both intra- and extracellular noise, and the precise differences between phagocytosis and other forms of endocytosis. In particular, this chapter will focus on the effect of target shape and orientation, including how these influence the rate and final outcome of phagocytic engulfment.
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58
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Agudo-Canalejo J. Engulfment of ellipsoidal nanoparticles by membranes: full description of orientational changes. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:294001. [PMID: 32176877 DOI: 10.1088/1361-648x/ab8034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We study the engulfment of ellipsoidal nanoparticles by membranes. It has been previously predicted that wrapping by the membrane can induce reorientation of the particle, however, previous studies only considered the wrapping process constrained to either side-oriented or tip-oriented particles. In contrast, we consider here the full two-dimensional energy landscape for engulfment, where the two degrees of freedom represent (i) the amount of wrapping and (ii) the particle orientation. In this way, we obtain access to the stability limits of the differently-oriented states, as well as to the energy barriers between them. We find that prolate and oblate particles undergo qualitatively different engulfment transitions, and show that the initial orientation of the particle at first contact with the membrane influences its fate.
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Affiliation(s)
- Jaime Agudo-Canalejo
- Max Planck Institute for Dynamics and Self-Organization (MPIDS), D-37077 Göttingen, Germany
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59
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Engstrom AM, Faase RA, Marquart GW, Baio JE, Mackiewicz MR, Harper SL. Size-Dependent Interactions of Lipid-Coated Gold Nanoparticles: Developing a Better Mechanistic Understanding Through Model Cell Membranes and in vivo Toxicity. Int J Nanomedicine 2020; 15:4091-4104. [PMID: 32606666 PMCID: PMC7295544 DOI: 10.2147/ijn.s249622] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 05/13/2020] [Indexed: 01/13/2023] Open
Abstract
Introduction Humans are intentionally exposed to gold nanoparticles (AuNPs) where they are used in variety of biomedical applications as imaging and drug delivery agents as well as diagnostic and therapeutic agents currently in clinic and in a variety of upcoming clinical trials. Consequently, it is critical that we gain a better understanding of how physiochemical properties such as size, shape, and surface chemistry drive cellular uptake and AuNP toxicity in vivo. Understanding and being able to manipulate these physiochemical properties will allow for the production of safer and more efficacious use of AuNPs in biomedical applications. Methods and Materials Here, AuNPs of three sizes, 5 nm, 10 nm, and 20 nm, were coated with a lipid bilayer composed of sodium oleate, hydrogenated phosphatidylcholine, and hexanethiol. To understand how the physical features of AuNPs influence uptake through cellular membranes, sum frequency generation (SFG) was utilized to assess the interactions of the AuNPs with a biomimetic lipid monolayer composed of a deuterated phospholipid 1.2-dipalmitoyl-d62-sn-glycero-3-phosphocholine (dDPPC). Results and Discussion SFG measurements showed that 5 nm and 10 nm AuNPs are able to phase into the lipid monolayer with very little energetic cost, whereas, the 20 nm AuNPs warped the membrane conforming it to the curvature of hybrid lipid-coated AuNPs. Toxicity of the AuNPs were assessed in vivo to determine how AuNP curvature and uptake influence cell health. In contrast, in vivo toxicity tested in embryonic zebrafish showed rapid toxicity of the 5 nm AuNPs, with significant 24 hpf mortality occurring at concentrations ≥20 mg/L, whereas the 10 nm and 20 nm AuNPs showed no significant mortality throughout the five-day experiment. Conclusion By combining information from membrane models using SFG spectroscopy with in vivo toxicity studies, a better mechanistic understanding of how nanoparticles (NPs) interact with membranes is developed to understand how the physiochemical features of AuNPs drive nanoparticle-membrane interactions, cellular uptake, and toxicity.
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Affiliation(s)
- Arek M Engstrom
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR, United States
| | - Ryan A Faase
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, United States
| | - Grant W Marquart
- Department of Chemistry, Portland State University, Portland, OR, United States
| | - Joe E Baio
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, United States
| | | | - Stacey L Harper
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR, United States.,School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, United States.,Oregon Nanoscience and Microtechnologies Institute, Corvallis, OR, United States
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60
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Montis C, Salvatore A, Valle F, Paolini L, Carlà F, Bergese P, Berti D. Biogenic supported lipid bilayers as a tool to investigate nano-bio interfaces. J Colloid Interface Sci 2020; 570:340-349. [DOI: 10.1016/j.jcis.2020.03.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 03/03/2020] [Accepted: 03/04/2020] [Indexed: 12/14/2022]
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61
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Zhou R, Weikl T, Ma YQ. Theoretical modeling of interactions at the bio-nano interface. NANOSCALE 2020; 12:10426-10429. [PMID: 32393940 DOI: 10.1039/d0nr90092c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Ruhong Zhou, Thomas Weikl and Yu-qiang Ma introduce the Nanoscale themed issue on Theoretical Modelling at Biointerfaces.
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Affiliation(s)
- Ruhong Zhou
- Institute of Quantitative Biology, Zhejiang University, Hangzhou 310058, China. and Department of Chemistry, Columbia University, New York, NY 10027, USA
| | - Thomas Weikl
- Max Planck Institute of Colloids and Interfaces, Department of Theory and Bio-Systems, Science Park Golm, Potsdam, Germany.
| | - Yu-Qiang Ma
- National Laboratory of Solid State Microstructures and Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
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62
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Bortoletti M, Molinari S, Fasolato L, Ugolotti J, Tolosi R, Venerando A, Radaelli G, Bertotto D, De Liguoro M, Salviulo G, Zboril R, Vianello F, Magro M. Nano-immobilized flumequine with preserved antibacterial efficacy. Colloids Surf B Biointerfaces 2020; 191:111019. [PMID: 32305623 DOI: 10.1016/j.colsurfb.2020.111019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 04/02/2020] [Accepted: 04/04/2020] [Indexed: 11/26/2022]
Abstract
Flumequine was nano-immobilized by self-assembly on iron oxide nanoparticles, called surface active maghemite nanoparticles (SAMNs). The binding process was studied and the resulting core-shell nanocarrier (SAMN@FLU) was structurally characterized evidencing a firmly immobilized organic canopy on which the fluorine atom of the antibiotic was exposed to the solvent. The antibiotic efficacy of the SAMN@FLU nanocarrier was tested on a fish pathogenic bacterium (Aeromonas veronii), a flumequine sensitive strain, in comparison to soluble flumequine and the minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) were assessed. Noteworthy, the MIC and MBC of soluble and nanoparticle bound drug were superimposable. Moreover, the interactions between SAMN@FLU nanocarrrier and microorganism were studied by transmission electron microscopy evidencing the ability of the complex to disrupt the bacterial wall. Finally, a preliminary in vivo test was provided using Daphnia magna as animal model. SAMN@FLU was able to protect the crustacean from the fatal consequences of a bacterial infection and showed no sign of toxicity. Thus, in contrast with the strength of the interaction, nano-immobilized FLU displayed a fully preserved antimicrobial activity suggesting the crucial role of fluorine in the drug mechanism of action. Besides the importance for potential applications in aquaculture, the present study contributes to the nascent field of nanoantibiotics.
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Affiliation(s)
- Martina Bortoletti
- Department of Comparative Biomedicine and Food Science, Agripolis Campus, University of Padua, viale dell'Università 16, 35020 Legnaro, Italy.
| | - Simone Molinari
- Department of Geosciences, University of Padua, via Gradenigo 6, 35131 Padova, Italy.
| | - Luca Fasolato
- Department of Comparative Biomedicine and Food Science, Agripolis Campus, University of Padua, viale dell'Università 16, 35020 Legnaro, Italy.
| | - Juri Ugolotti
- Regional Centre of Advanced Technologies and Materials, Palacky University, Slechtitelu 11, 78371 Olomouc, Czech Republic.
| | - Roberta Tolosi
- Department of Comparative Biomedicine and Food Science, Agripolis Campus, University of Padua, viale dell'Università 16, 35020 Legnaro, Italy.
| | - Andrea Venerando
- Department of Comparative Biomedicine and Food Science, Agripolis Campus, University of Padua, viale dell'Università 16, 35020 Legnaro, Italy.
| | - Giuseppe Radaelli
- Department of Comparative Biomedicine and Food Science, Agripolis Campus, University of Padua, viale dell'Università 16, 35020 Legnaro, Italy.
| | - Daniela Bertotto
- Department of Comparative Biomedicine and Food Science, Agripolis Campus, University of Padua, viale dell'Università 16, 35020 Legnaro, Italy.
| | - Marco De Liguoro
- Department of Comparative Biomedicine and Food Science, Agripolis Campus, University of Padua, viale dell'Università 16, 35020 Legnaro, Italy.
| | - Gabriella Salviulo
- Department of Geosciences, University of Padua, via Gradenigo 6, 35131 Padova, Italy.
| | - Radek Zboril
- Regional Centre of Advanced Technologies and Materials, Palacky University, Slechtitelu 11, 78371 Olomouc, Czech Republic.
| | - Fabio Vianello
- Department of Comparative Biomedicine and Food Science, Agripolis Campus, University of Padua, viale dell'Università 16, 35020 Legnaro, Italy.
| | - Massimiliano Magro
- Department of Comparative Biomedicine and Food Science, Agripolis Campus, University of Padua, viale dell'Università 16, 35020 Legnaro, Italy.
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63
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Xia QS, Zhu T, Jiang ZY, Ding HM, Ma YQ. Enhancing the targeting ability of nanoparticles via protected copolymers. NANOSCALE 2020; 12:7804-7813. [PMID: 32219265 DOI: 10.1039/d0nr01176b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
It is important to maintain the balance between therapeutic efficiency and cytotoxicity when using nanomaterials for biomedical applications. Here, we propose a new method (i.e., non-covalent coating of protected copolymers onto the nanoparticle surface) to enhance the active targeting of nanoparticles to the cancer cells by combining the dissipative particle dynamics simulation and in vitro experiments. When coating the protected copolymer onto the nanoparticle surface, the uptake efficiency could be greatly altered due to the competition between the copolymer-ligand interaction and the receptor-ligand interaction-the non-covalent coating is more efficient than the covalent coating. Furthermore, the effect of the physicochemical properties of the protected copolymer on the targeting ability of nanoparticles was also investigated. This study offers useful insight into the optimal design of nanocarriers in biomedicine.
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Affiliation(s)
- Qiang-Sheng Xia
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology, Soochow University, Suzhou 215006, China.
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64
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Kumar Basak U, Roobala C, Basu JK, Maiti PK. Size-dependent interaction of hydrophilic/hydrophobic ligand functionalized cationic and anionic nanoparticles with lipid bilayers. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:104003. [PMID: 31722322 DOI: 10.1088/1361-648x/ab5770] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We study the nature of nanoparticle (NPs)-membrane interaction as a function of nanoparticle size for different functionalization using molecular dynamics simulation. Zinc sulphide quantum dots of size, 2 nm and 4 nm are used as model NPs, and DLPC and DPPC lipid bilayers are used as model membranes. We use coarse-grained polarizable MARTINI model (MPW) to simulate the NPs and lipid bilayers. Our simulation results show that uncharged bare NPs penetrate the lipid bilayers and embed themselves within the hydrophobic core of the bilayer both in the gel and fluid phases. NPs of size 4 nm are shown to disrupt the bilayer. The bilayer recovers from the damages caused by smaller NPs of size 2 nm. In case of either purely hydrophilic or hybrid (with hydrophilic/hydrophobic ratio of 2:1) ligand-functionalized NPs of smaller size (shell size 2 nm), only cationic NPs bind to the bilayer. However, for larger NPs with a shell size of 4 nm, both anionic and cationic hybrid functionalized NPs bind to the bilayer. The performance of standard Martini (SM) force field for the charged NP/bilayer systems has also been tested and compared with the results obtained using MPW model. Although the overall trend that the cationic NPs interact strongly with the bilayers than their anionic counterparts has been captured correctly using SM, the adsorption behaviour of the functionalized NPs differ significantly in the SM force field. The interaction of anionic NPs with both fluid and gel bilayers has been observed to be least accurately represented in the SM force field.
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65
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Zhao J, Liu C, Li Y, Ma Y, Deng J, Li L, Sun J. Thermophoretic Detection of Exosomal microRNAs by Nanoflares. J Am Chem Soc 2020; 142:4996-5001. [PMID: 32134270 DOI: 10.1021/jacs.9b13960] [Citation(s) in RCA: 160] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Exosomal microRNAs (miRNAs) are reliable and noninvasive biomarkers for the early diagnosis of cancer. Yet, accurate and feasible detection of exosomal miRNAs is often hampered by the low abundance of miRNAs in exosomes and the requirement for RNA extraction in large sample volumes. Here we show a thermophoretic sensor implemented with nanoflares for in situ detection of exosomal miRNAs, without resorting to either RNA extraction or target amplification. Thermophoretic accumulation of nanoflare-treated exosomes leads to an amplified fluorescence signal upon the binding of exosomal miRNAs to nanoflares, allowing for direct and quantitative measurement of exosomal miRNAs down to 0.36 fM in 0.5 μL serum samples. One of the best markers, exosomal miR-375, showed an accuracy of 85% for detection of estrogen receptor-positive breast cancer at early stages (stages I, II). This work provides a feasible tool to improve the diagnosis of cancer.
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Affiliation(s)
- Junxiang Zhao
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Liu
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yike Li
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yao Ma
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinqi Deng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lele Li
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiashu Sun
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
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66
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Burgess S, Wang Z, Vishnyakov A, Neimark AV. Adhesion, intake, and release of nanoparticles by lipid bilayers. J Colloid Interface Sci 2020; 561:58-70. [DOI: 10.1016/j.jcis.2019.11.106] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 11/17/2019] [Accepted: 11/27/2019] [Indexed: 02/06/2023]
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67
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Bai X, Li M, Hu G. Nanoparticle translocation across the lung surfactant film regulated by grafting polymers. NANOSCALE 2020; 12:3931-3940. [PMID: 32003385 DOI: 10.1039/c9nr09251j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nanoparticle-based pulmonary drug delivery has gained significant attention due to its ease of administration, increased bioavailability, and reduced side effects caused by a high systemic dosage. After being delivered into the deep lung, the inhaled nanoparticles first interact with the lung surfactant lining layer composed of phospholipids and surfactant proteins and then potentially cause the dysfunction of the lung surfactant. Conditioning the surface properties of nanoparticles with grafting polymers to avoid these side effects is of crucial importance to the efficiency and safety of pulmonary drug delivery. Herein, we perform coarse-grained molecular simulations to decipher the involved mechanism responsible for the translocation of the polymer-grafted Au nanoparticles across the lung surfactant film. The simulations illustrate that conditioning of the grafting polymers, including their length, terminal charge, and grafting density, can result in different translocation processes. Based on the energy analysis, we find that these discrepancies in translocation stem from the affinity of the nanoparticles with the lipid tails and heads and their contact with the proteins, which can be tuned by the surface polarity and surface charge of the nanoparticles. We further demonstrate that the interaction between the nanoparticles and the lung surfactant is related to the depletion of the lipids and proteins during translocation, which affects the surface tension of the surfactant film. The change in the surface tension in turn affects the nanoparticle translocation and the collapse of the surfactant film. These results can help understand the adverse effects of the nanoparticles on the lung surfactant film and provide guidance to the design of inhaled nanomedicines for improved permeability and targeting.
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Affiliation(s)
- Xuan Bai
- Department of Engineering Mechanics, Zhejiang University, Hangzhou 310027, China. and The State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China and School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mujun Li
- The State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China and School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guoqing Hu
- Department of Engineering Mechanics, Zhejiang University, Hangzhou 310027, China.
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68
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Lunnoo T, Assawakhajornsak J, Ruangchai S, Puangmali T. Role of Surface Functionalization on Cellular Uptake of AuNPs Characterized by Computational Microscopy. J Phys Chem B 2020; 124:1898-1908. [DOI: 10.1021/acs.jpcb.9b11600] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thodsaphon Lunnoo
- Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | | | - Sukhum Ruangchai
- Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
- Institute of Nanomaterials Research and Innovation for Energy (IN-RIE), Khon Kaen University, Khon Kaen 40002, Thailand
| | - Theerapong Puangmali
- Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
- Institute of Nanomaterials Research and Innovation for Energy (IN-RIE), Khon Kaen University, Khon Kaen 40002, Thailand
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69
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Koch AHR, Morsbach S, Bereau T, Lévêque G, Butt HJ, Deserno M, Landfester K, Fytas G. Probing Nanoparticle/Membrane Interactions by Combining Amphiphilic Diblock Copolymer Assembly and Plasmonics. J Phys Chem B 2020; 124:742-750. [PMID: 31951417 PMCID: PMC7008459 DOI: 10.1021/acs.jpcb.9b10469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Understanding the interactions between
nanoparticles (NPs) and boundaries of cells is crucial both for their
toxicity and therapeutic applications. Besides specific receptor-mediated
endocytosis of surface-functionalized NPs, passive internalization
is prompted by relatively unspecific parameters, such as particle
size and charge. Based on theoretical treatments, adhesion to and
bending of the cell membrane can induce NP wrapping. Experimentally,
powerful tools are needed to selectively probe possible membrane-NP
motifs at very dilute conditions and avoid dye labeling. In this work,
we employ surface resonance-enhanced dynamic light scattering, surface
plasmon resonance, electron microscopy, and simulations for sensing
interactions between plasmonic AuNPs and polymersomes. We distinguish
three different interaction scenarios at nanomolar concentrations
by tuning the surface charge of AuNPs and rationalize these events
by balancing vesicle bending and electrostatic/van der Waals AuNP
and vesicle adhesion. The clarification of the physical conditions
under which nanoparticles passively translocate across membranes can
aid in the rational design of drugs that cannot exploit specific modes
of cellular uptake and also elucidates physical properties that render
nanoparticles in the environment particularly toxic.
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Affiliation(s)
- Amelie H R Koch
- Max Planck Institute for Polymer Research , Ackermannweg 10 , 55128 Mainz , Germany
| | - Svenja Morsbach
- Max Planck Institute for Polymer Research , Ackermannweg 10 , 55128 Mainz , Germany
| | - Tristan Bereau
- Max Planck Institute for Polymer Research , Ackermannweg 10 , 55128 Mainz , Germany
| | - Gaëtan Lévêque
- Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN), UMR-CNRS 8520, Faculté de Sciences et Technologies , Université de Lille , 59655 Villeneuve d'Ascq , France
| | - Hans-Jürgen Butt
- Max Planck Institute for Polymer Research , Ackermannweg 10 , 55128 Mainz , Germany
| | - Markus Deserno
- Department of Physics , Carnegie Mellon University , Pittsburgh , Pennsylvania 15213 , United States
| | - Katharina Landfester
- Max Planck Institute for Polymer Research , Ackermannweg 10 , 55128 Mainz , Germany
| | - George Fytas
- Max Planck Institute for Polymer Research , Ackermannweg 10 , 55128 Mainz , Germany.,IESL-FORTH , P.O. Box 1527, 71110 Heraklion , Greece
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70
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Wiegand T, Fratini M, Frey F, Yserentant K, Liu Y, Weber E, Galior K, Ohmes J, Braun F, Herten DP, Boulant S, Schwarz US, Salaita K, Cavalcanti-Adam EA, Spatz JP. Forces during cellular uptake of viruses and nanoparticles at the ventral side. Nat Commun 2020; 11:32. [PMID: 31896744 PMCID: PMC6940367 DOI: 10.1038/s41467-019-13877-w] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 12/06/2019] [Indexed: 11/09/2022] Open
Abstract
Many intracellular pathogens, such as mammalian reovirus, mimic extracellular matrix motifs to specifically interact with the host membrane. Whether and how cell-matrix interactions influence virus particle uptake is unknown, as it is usually studied from the dorsal side. Here we show that the forces exerted at the ventral side of adherent cells during reovirus uptake exceed the binding strength of biotin-neutravidin anchoring viruses to a biofunctionalized substrate. Analysis of virus dissociation kinetics using the Bell model revealed mean forces higher than 30 pN per virus, preferentially applied in the cell periphery where close matrix contacts form. Utilizing 100 nm-sized nanoparticles decorated with integrin adhesion motifs, we demonstrate that the uptake forces scale with the adhesion energy, while actin/myosin inhibitions strongly reduce the uptake frequency, but not uptake kinetics. We hypothesize that particle adhesion and the push by the substrate provide the main driving forces for uptake. Many intracellular pathogens mimic extracellular matrix motifs to specifically interact with the host membrane which may influences virus particle uptake. Here authors use single molecule tension sensors to reveal the minimal forces exerted on single virus particles and demonstrate that the uptake forces scale with the adhesion energy.
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Affiliation(s)
- Tina Wiegand
- Max Planck Institute for Medical Research, Jahnstraße 29, 69120, Heidelberg, Germany. .,Institute for Physical Chemistry, Heidelberg University, INF 253, 69120, Heidelberg, Germany. .,Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstraße 108, 01307, Dresden, Germany.
| | - Marta Fratini
- Max Planck Institute for Medical Research, Jahnstraße 29, 69120, Heidelberg, Germany.,Institute for Physical Chemistry, Heidelberg University, INF 253, 69120, Heidelberg, Germany.,Department of Infectious Diseases, Virology, University Hospital, INF 324, 69120, Heidelberg, Germany.,German Cancer Research Center (DKFZ), INF 581, 69120, Heidelberg, Germany.,Department of Cellular Biochemistry, Institute of Biochemistry and Biotechnology, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120, Halle (Saale), Germany
| | - Felix Frey
- BioQuant Center, Heidelberg University, INF 267, 69120, Heidelberg, Germany.,Institute for Theoretical Physics, Heidelberg University, Philosophenweg 19, 69120, Heidelberg, Germany
| | - Klaus Yserentant
- Institute for Physical Chemistry, Heidelberg University, INF 253, 69120, Heidelberg, Germany.,BioQuant Center, Heidelberg University, INF 267, 69120, Heidelberg, Germany
| | - Yang Liu
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA, 30322, USA.,Johns Hopkins University, 3400N Charles St, Baltimore, MD, 21218, USA
| | - Eva Weber
- Max Planck Institute for Medical Research, Jahnstraße 29, 69120, Heidelberg, Germany.,Institute for Physical Chemistry, Heidelberg University, INF 253, 69120, Heidelberg, Germany.,Department of Neuroscience, Carl von Ossietzky University Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26129, Oldenburg, Germany
| | - Kornelia Galior
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA, 30322, USA.,Department of Pathology and Laboratory Medicine, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave, Madison, WI, 53792, USA
| | - Julia Ohmes
- Max Planck Institute for Medical Research, Jahnstraße 29, 69120, Heidelberg, Germany.,Institute for Physical Chemistry, Heidelberg University, INF 253, 69120, Heidelberg, Germany.,Experimental Trauma Surgery, Universty Hospital Schleswig-Holstein, Arnold-Heller-Straße 3, 24105, Kiel, Germany
| | - Felix Braun
- Institute for Physical Chemistry, Heidelberg University, INF 253, 69120, Heidelberg, Germany.,BioQuant Center, Heidelberg University, INF 267, 69120, Heidelberg, Germany
| | - Dirk-Peter Herten
- Institute for Physical Chemistry, Heidelberg University, INF 253, 69120, Heidelberg, Germany.,BioQuant Center, Heidelberg University, INF 267, 69120, Heidelberg, Germany.,Institute of Cardiovascular Sciences & School of Chemistry, Medical School, University of Birmingham, Edgbaston, B15 2TT, UK
| | - Steeve Boulant
- Department of Infectious Diseases, Virology, University Hospital, INF 324, 69120, Heidelberg, Germany.,German Cancer Research Center (DKFZ), INF 581, 69120, Heidelberg, Germany
| | - Ulrich S Schwarz
- BioQuant Center, Heidelberg University, INF 267, 69120, Heidelberg, Germany.,Institute for Theoretical Physics, Heidelberg University, Philosophenweg 19, 69120, Heidelberg, Germany
| | - Khalid Salaita
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA, 30322, USA
| | - E Ada Cavalcanti-Adam
- Max Planck Institute for Medical Research, Jahnstraße 29, 69120, Heidelberg, Germany. .,Institute for Physical Chemistry, Heidelberg University, INF 253, 69120, Heidelberg, Germany.
| | - Joachim P Spatz
- Max Planck Institute for Medical Research, Jahnstraße 29, 69120, Heidelberg, Germany. .,Institute for Physical Chemistry, Heidelberg University, INF 253, 69120, Heidelberg, Germany.
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71
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Frey F, Ziebert F, Schwarz US. Dynamics of particle uptake at cell membranes. Phys Rev E 2019; 100:052403. [PMID: 31869989 DOI: 10.1103/physreve.100.052403] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Indexed: 11/07/2022]
Abstract
Receptor-mediated endocytosis requires that the energy of adhesion overcomes the deformation energy of the plasma membrane. The resulting driving force is balanced by dissipative forces, leading to deterministic dynamical equations. While the shape of the free membrane does not play an important role for tensed and loose membranes, in the intermediate regime it leads to an important energy barrier. Here we show that this barrier is similar to but different from an effective line tension and suggest a simple analytical approximation for it. We then explore the rich dynamics of uptake for particles of different shapes and present the corresponding dynamical state diagrams. We also extend our model to include stochastic fluctuations, which facilitate uptake and lead to corresponding changes in the phase diagrams.
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Affiliation(s)
- Felix Frey
- Institute for Theoretical Physics, Heidelberg University, Philosophenweg 19, 69120 Heidelberg, Germany and BioQuant, Heidelberg University, Im Neuenheimer Feld 267, 69120 Heidelberg, Germany
| | - Falko Ziebert
- Institute for Theoretical Physics, Heidelberg University, Philosophenweg 19, 69120 Heidelberg, Germany and BioQuant, Heidelberg University, Im Neuenheimer Feld 267, 69120 Heidelberg, Germany
| | - Ulrich S Schwarz
- Institute for Theoretical Physics, Heidelberg University, Philosophenweg 19, 69120 Heidelberg, Germany and BioQuant, Heidelberg University, Im Neuenheimer Feld 267, 69120 Heidelberg, Germany
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72
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Mendozza M, Caselli L, Salvatore A, Montis C, Berti D. Nanoparticles and organized lipid assemblies: from interaction to design of hybrid soft devices. SOFT MATTER 2019; 15:8951-8970. [PMID: 31680131 DOI: 10.1039/c9sm01601e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This contribution reviews the state of art on hybrid soft matter assemblies composed of inorganic nanoparticles (NP) and lamellar or non-lamellar lipid bilayers. After a short outline of the relevant energetic contributions, we address the interaction of NPs with synthetic lamellar bilayers, meant as cell membrane mimics. We then review the design of hybrid nanostructured materials composed of lipid bilayers and some classes of inorganic NPs, with particular emphasis on the effects on the amphiphilic phase diagram and on the additional properties contributed by the NPs. Then, we present the latest developments on the use of lipid bilayers as coating agents for inorganic NPs. Finally, we remark on the main achievements of the last years and our vision for the development of the field.
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Affiliation(s)
- Marco Mendozza
- Department of Chemistry "Ugo Schiff", University of Florence, and CSGI (Italian Center for Colloid and Surface Science, Via della Lastruccia 3, Sesto Fiorentino, 50019 Firenze, Italy.
| | - Lucrezia Caselli
- Department of Chemistry "Ugo Schiff", University of Florence, and CSGI (Italian Center for Colloid and Surface Science, Via della Lastruccia 3, Sesto Fiorentino, 50019 Firenze, Italy.
| | - Annalisa Salvatore
- Department of Chemistry "Ugo Schiff", University of Florence, and CSGI (Italian Center for Colloid and Surface Science, Via della Lastruccia 3, Sesto Fiorentino, 50019 Firenze, Italy.
| | - Costanza Montis
- Department of Chemistry "Ugo Schiff", University of Florence, and CSGI (Italian Center for Colloid and Surface Science, Via della Lastruccia 3, Sesto Fiorentino, 50019 Firenze, Italy.
| | - Debora Berti
- Department of Chemistry "Ugo Schiff", University of Florence, and CSGI (Italian Center for Colloid and Surface Science, Via della Lastruccia 3, Sesto Fiorentino, 50019 Firenze, Italy.
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73
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Yan Z, Wu Z, Li S, Zhang X, Yi X, Yue T. Curvature-mediated cooperative wrapping of multiple nanoparticles at the same and opposite membrane sides. NANOSCALE 2019; 11:19751-19762. [PMID: 31384870 DOI: 10.1039/c9nr03554k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cell membrane interactions with nanoparticles (NPs) are essential to cellular functioning and mostly accompanied by membrane curvature generation and sensing. Multiple NPs inducing curvature from one side of a membrane are believed to be wrapped cooperatively by the membrane through curvature-mediated interactions. However, little is known about another biologically ubiquitous and important case, i.e., NPs binding to opposite membrane sides induce a curved bend of different directions. Combining coarse-grained molecular dynamics and theoretical analysis, here we systematically investigate the cooperative effect in the wrapping of multiple adhesive NPs at the same and opposite membrane sides and demonstrate the importance of the magnitude and direction of the membrane bend in regulating curvature-mediated NP interactions. Effects of the NP size, size difference, initial distance, number, and strength of adhesion with the membrane on the wrapping cooperativity and wrapping states are analyzed. For NPs binding to the same membrane side, rich membrane wrapping and NP aggregation states are observed, and the curvature-mediated interactions could be either attractive or repulsive, depending on the initial NP distance and the competition between the membrane bending, NP binding and membrane protrusion. In sharp contrast, the interaction between two NPs binding to opposite membrane sides is always attractive and the cooperative wrapping of NPs is promoted, as the curved membrane regions induced by the NPs are shared in a manner that the NP-membrane contact is increased and the energy cost of membrane bending is reduced. Owing to the ubiquity and heterogeneity of membrane shaping proteins in biology, our results enrich the cutting-edge knowledge on the curvature-mediated interaction of NPs for better and profound understanding on high-order cooperative assemblies of NPs or proteins in numerous biological processes.
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Affiliation(s)
- Zengshuai Yan
- State Key Laboratory of Heavy Oil Processing, Center for Bioengineering and Biotechnology, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China.
| | - Zeming Wu
- Department of Mechanics and Engineering Science, Beijing Innovation Center for Engineering Science and Advanced Technology, College of Engineering, Peking University, Beijing 100871, China.
| | - Shixin Li
- State Key Laboratory of Heavy Oil Processing, Center for Bioengineering and Biotechnology, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China.
| | - Xianren Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xin Yi
- Department of Mechanics and Engineering Science, Beijing Innovation Center for Engineering Science and Advanced Technology, College of Engineering, Peking University, Beijing 100871, China.
| | - Tongtao Yue
- State Key Laboratory of Heavy Oil Processing, Center for Bioengineering and Biotechnology, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China.
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74
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Das M, Dahal U, Mesele O, Liang D, Cui Q. Molecular Dynamics Simulation of Interaction between Functionalized Nanoparticles with Lipid Membranes: Analysis of Coarse-Grained Models. J Phys Chem B 2019; 123:10547-10561. [DOI: 10.1021/acs.jpcb.9b08259] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Mitradip Das
- School of Chemical Sciences, National Institute of Science Education and Research, Khordha, Odisha, India, 752050
- Homi Bhabha National Institute, Training School
Complex, Anushaktinagar, Mumbai, Maharashtra, India, 400094
| | - Udaya Dahal
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Oluwaseun Mesele
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Dongyue Liang
- Department of Chemistry and Theoretical Chemistry Institute, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Qiang Cui
- Departments of Chemistry, Physics and Biomedical Engineering, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
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75
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Zhang L, Chen H, Xie J, Becton M, Wang X. Interplay of Nanoparticle Rigidity and Its Translocation Ability through Cell Membrane. J Phys Chem B 2019; 123:8923-8930. [PMID: 31566375 DOI: 10.1021/acs.jpcb.9b07452] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Understanding the endocytic process of nanoparticles (NPs) with different mechanical rigidities is critical to develop effective drug delivery vectors. Here, we perform experiments, coarse-grained molecular dynamics simulations, and theoretical analyses to investigate the role of NPs' mechanical rigidity in the cellular endocytic process. Experiments based on two types of engineered Au NPs that have similar properties but different rigidities are performed in order to investigate their cellular uptake efficiencies, and it has been found that the more rigid NPs can achieve a higher cellular uptake efficiency. Simulation results confirm that rigid NPs can achieve full internalization by forming a complete double-layer endosome coating, while relatively soft NPs can only reach 40% surface coverage by membrane lipids. Simulation results capture an intriguing translocation of multiple NPs with different rigidities in a cooperative manner where the NPs' mechanical rigidities regulate their translocation efficiencies. We find that theoretically rigid NPs require less energy to overcome the energy barrier for membrane internalization than soft NPs do, which is in good agreement with experiment and simulation results. This synergetic study offers useful insight into the design principle of a general NP-based drug delivery vector as well as the promising biomedical application of NP-based medicine.
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Affiliation(s)
- Liuyang Zhang
- State Key Laboratory for Manufacturing Systems Engineering , Xi'an Jiaotong University , Xi'an , Shaanxi 710049 , China
| | - Hongmin Chen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health , Xiamen University , Xiamen 361102 , China
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76
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Zuraw-Weston S, Wood DA, Torres IK, Lee Y, Wang LS, Jiang Z, Lázaro GR, Wang S, Rodal AA, Hagan MF, Rotello VM, Dinsmore AD. Nanoparticles binding to lipid membranes: from vesicle-based gels to vesicle tubulation and destruction. NANOSCALE 2019; 11:18464-18474. [PMID: 31577313 PMCID: PMC7155749 DOI: 10.1039/c9nr06570a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
While cells offer numerous inspiring examples in which membrane morphology and function are controlled by interactions with viruses or proteins, we still lack design principles for controlling membrane morphology in synthetic systems. With experiments and simulations, we show that spherical nanoparticles binding to lipid-bilayer membrane vesicles results in a remarkably rich set of collective morphologies that are controllable via the particle binding energy. We separately study cationic and anionic particles, where the adhesion is tuned by addition of oppositely charged lipids to the vesicles. When the binding energy is weak relative to a characteristic membrane-bending energy, vesicles adhere to one another and form a soft solid gel, a novel and useful platform for controlled release. With larger binding energy, a transition from partial to complete wrapping of the nanoparticles causes a remarkable vesicle destruction process culminating in rupture, nanoparticle-membrane tubules, and an apparent inversion of the vesicles. These findings help unify the diverse phenomena observed previously. They also open the door to a new class of vesicle-based, closed-cell gels that are more than 99% water and can encapsulate and release on demand, and show how to drive intentional membrane remodeling for shape-responsive systems.
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77
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Ni SD, Yin YW, Li XL, Ding HM, Ma YQ. Controlling the Interaction of Nanoparticles with Cell Membranes by the Polymeric Tether. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:12851-12857. [PMID: 31474103 DOI: 10.1021/acs.langmuir.9b02010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The well control over the cell-nanoparticle interaction can be of great importance and necessity for different biomedical applications. In this work, we propose a new and simple way (i.e., polymeric tether) to tuning the interaction between nanoparticles and cell membranes by dissipative particle dynamics simulations. It is found that the linked nanoparticles (via polymeric tether) can show some cooperation during the cellular uptake and thereby have a higher wrapping degree than the single nanoparticle. The effect of the property of the polymer on the wrapping is also investigated, and it is found that the length, rigidity, and hydrophobicity of the polymer play an important role. More interestingly, the uptake of linked nanoparticles could be adjusted to the firm adhesion via two rigid polymeric tethers. The present study may provide some useful guidelines for novel design of functional nanomaterials in the experiments.
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Affiliation(s)
- Song-di Ni
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology , Soochow University , Suzhou 215006 , China
| | - Yue-Wen Yin
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology , Soochow University , Suzhou 215006 , China
| | - Xiao-Lei Li
- Institute of Functional Nano & Soft Materials (FUNSOM) , Soochow University , Suzhou 215123 , China
| | - Hong-Ming Ding
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology , Soochow University , Suzhou 215006 , China
| | - Yu-Qiang Ma
- National Laboratory of Solid State Microstructures and Department of Physics, Collaborative Innovation Center of Advanced Microstructures , Nanjing University , Nanjing 210093 , China
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78
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Khosravanizadeh A, Sens P, Mohammad-Rafiee F. Wrapping of a nanowire by a supported lipid membrane. SOFT MATTER 2019; 15:7490-7500. [PMID: 31513228 DOI: 10.1039/c9sm00618d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Internalization of particles by cells plays a crucial role for adsorbing nutrients and fighting infection. Endocytosis is one of the most important mechanisms of particle uptake, which encompasses multiple pathways. Although endocytosis is a complex mechanism involving biochemical signaling and active force generation, the energetic cost associated with the large deformations of the cell membrane wrapping around a foreign particle is an important factor controlling this process, which can be studied using quantitative physical models. Of particular interest is the competition between membrane-cytoskeleton and membrane-target adhesion. This competitive adhesion mechanism can be reproduced to some extent by studying particle wrapping by a membrane adhered to a substrate. We propose a theoretical analysis of this process. Here, we explore the wrapping of a lipid membrane around a long cylindrical object in the presence of a substrate mimicking the cytoskeleton. Using discretization of the Helfrich elastic energy, which accounts for the membrane bending rigidity and surface tension, we obtain a wrapping phase diagram as a function of the membrane-cytoskeleton and the membrane-target adhesion energy, which includes unwrapped, partially wrapped and fully wrapped states. We provide an analytical expression for the boundary between the different regimes. While the transition to partial wrapping is independent of the membrane tension, the transition to full wrapping is very much influenced by the membrane tension. We also show that target wrapping may proceed in an asymmetric fashion in the full wrapping regime.
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Affiliation(s)
- Amir Khosravanizadeh
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran.
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79
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Bahrami A, Bahrami AH. Vesicle constriction by rings of Janus nanoparticles and aggregates of curved proteins. NANOTECHNOLOGY 2019; 30:345101. [PMID: 31048566 DOI: 10.1088/1361-6528/ab1ed5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Membrane constriction and associated scission by proteins and nano structures are crucial to many processes in cellular and synthetic biology. We report mechanical constriction of vesicles by rings of adsorbed Janus nanoparticles that represent synthetic nano structures and mimic contractile proteins, and by aggregates of curved crescents that mimic scaffold proteins. Membrane energetics from Monte Carlo simulations and simulated annealing of the elastic membrane model confirms spontaneous vesicle constriction by aggregates of sufficiently-curved crescents of various lengths and by rings of Janus nanoparticles with a variety of ring lengths, particle sizes, and particle area fractions. We show that shorter rings of smaller particles with higher area fractions reinforce the constriction by increasing the energetic drive towards the constricted vesicle with smaller constriction radius. We demonstrate that vesicle constriction by crescent aggregates strongly depends on the crescent curvature. In contrast to aggregates of sufficiently-curved crescents that are capable of inducing full vesicle constriction, those of near flat crescents with negligible curvature leave the vesicle unconstricted. Our results offer promising perspectives for designing membrane-constricting nano structures such as nanoparticle aggregates and clusters of synthetic curved proteins such as DNA origami scaffolds with applications in synthetic biology. Our findings reveal the significant contribution of highly-curved F-BAR domains to cell division and explain how contractile protein rings such as dynamin GTPase, actomyosin rings, and endosomal sorting complexes required for transport constrict the membrane.
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Affiliation(s)
- Arash Bahrami
- School of Mechanical Engineering, College of Engineering, University of Tehran, North Kargar St., 14399-57131 Tehran, Iran
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80
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Kostina NY, Rahimi K, Xiao Q, Haraszti T, Dedisch S, Spatz JP, Schwaneberg U, Klein ML, Percec V, Möller M, Rodriguez-Emmenegger C. Membrane-Mimetic Dendrimersomes Engulf Living Bacteria via Endocytosis. NANO LETTERS 2019; 19:5732-5738. [PMID: 31306030 DOI: 10.1021/acs.nanolett.9b02349] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
There is much interest in developing vesicular microcompartments from natural and synthetic amphiphiles, enabling programmable interactions with living matter. Of particular interest is the development of vesicles capable of endocytosis of living bacteria. Despite the complexity of this process, theoretical studies predict that the endocytosis of prolate micro-objects is possible without the need of active cell machinery if the energy released upon bacterial adhesion to the membrane surpasses the energy required to bend the membrane. Nonetheless, natural liposomes and synthetic polymersomes fail to sufficiently recapitulate membrane properties to perform this advanced function. Here we report the engulfment of living bacteria into endosomes by cell-like dendrimersomes assembled from Janus dendrimers. Full engulfment occurred in less than a minute after contact. The process is driven by the adhesion of the bacterium to the dendrimersome's membrane by ultraweak interactions, comparable to those utilized by nature. The key to success relies on the combination of high flexibility and stability of the dendrimersomes. The key properties of the dendrimersomes are programmed into the molecular structures of their building blocks. The ability to support endocytosis highlights opportunities for the design and programming of dendrimersomes in biomedical research.
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Affiliation(s)
- Nina Yu Kostina
- DWI-Leibniz Institute for Interactive Materials , Forckenbeckstraße 50 , 52074 Aachen , Germany
- Institute of Technical and Macromolecular Chemistry , RWTH Aachen University , Forckenbeckstraße 50 , 52074 Aachen , Germany
| | - Khosrow Rahimi
- DWI-Leibniz Institute for Interactive Materials , Forckenbeckstraße 50 , 52074 Aachen , Germany
- Institute of Technical and Macromolecular Chemistry , RWTH Aachen University , Forckenbeckstraße 50 , 52074 Aachen , Germany
| | - Qi Xiao
- Roy & Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , Philadelphia , Pennsylvania 19104-6323 , United States
- Institute of Computational Molecular Science , Temple University , Philadelphia , Pennsylvania 19122 , United States
| | - Tamás Haraszti
- DWI-Leibniz Institute for Interactive Materials , Forckenbeckstraße 50 , 52074 Aachen , Germany
- Institute of Technical and Macromolecular Chemistry , RWTH Aachen University , Forckenbeckstraße 50 , 52074 Aachen , Germany
| | - Sarah Dedisch
- DWI-Leibniz Institute for Interactive Materials , Forckenbeckstraße 50 , 52074 Aachen , Germany
- Institute of Biotechnology , RWTH Aachen University , Worringerweg 3 , 52074 Aachen , Germany
| | - Joachim P Spatz
- Department of Cellular Biophysics , Max Planck Institute for Medical Research , Jahnstraße 29 , 69120 Heidelberg , Germany
- Department of Biophysical Chemistry , University of Heidelberg , Im Neuenheimer Feld 253 , 69120 Heidelberg , Germany
| | - Ulrich Schwaneberg
- DWI-Leibniz Institute for Interactive Materials , Forckenbeckstraße 50 , 52074 Aachen , Germany
- Institute of Biotechnology , RWTH Aachen University , Worringerweg 3 , 52074 Aachen , Germany
| | - Michael L Klein
- Institute of Computational Molecular Science , Temple University , Philadelphia , Pennsylvania 19122 , United States
| | - Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Martin Möller
- DWI-Leibniz Institute for Interactive Materials , Forckenbeckstraße 50 , 52074 Aachen , Germany
- Institute of Technical and Macromolecular Chemistry , RWTH Aachen University , Forckenbeckstraße 50 , 52074 Aachen , Germany
| | - Cesar Rodriguez-Emmenegger
- DWI-Leibniz Institute for Interactive Materials , Forckenbeckstraße 50 , 52074 Aachen , Germany
- Institute of Technical and Macromolecular Chemistry , RWTH Aachen University , Forckenbeckstraße 50 , 52074 Aachen , Germany
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81
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Zhang L, Wang Y, Yang D, Huang W, Hao P, Feng S, Appelhans D, Zhang T, Zan X. Shape Effect of Nanoparticles on Tumor Penetration in Monolayers Versus Spheroids. Mol Pharm 2019; 16:2902-2911. [PMID: 31184906 DOI: 10.1021/acs.molpharmaceut.9b00107] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The physical properties of nanoparticles (NPs), such as size, surface chemistry, elasticity, and shape, have exerted a profound influence on tumor penetration. However, the effect of shape on cellular uptake and tumor penetration is still unclear because of the different chemical compositions and shapes of tested particles and the use of inapposite cellular models. To discover the effect of NP shapes on cellular uptake and tumor penetration and bridge the gap between models in vivo and in vitro, elongated polystyrene (PS) NPs with a fixed volume, an identical chemical composition, and the same zeta potential, but with different aspect ratios (ARs), were generated. The physical properties, cellular uptake, tumor penetration, and corresponding mechanisms of these NPs were thoroughly investigated. We discovered that the elongated PS particles with higher ARs had lower uptake rates in the 2-dimensional cell monolayer culture model in vitro, but they showed optimal ARs in the evaluated three-dimensional spheroid model. Although the elongated PS particles had a similar tumor penetration mechanism (mainly through extracellular pathways), the percentage of penetration using these mechanisms was strongly dependent on the ARs. As an alternative model for studies in vivo, spheroids were used instead of the cell monolayer for the development of drug delivery systems. In addition, the physicochemical properties of NPs must be delicately balanced and adjusted to achieve the best therapeutic outcomes.
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Affiliation(s)
- Long Zhang
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering , Wenzhou Medical University , Wenzhou , Zhejiang Province 325035 , PR China.,Wenzhou Institute of Biomaterials and Engineering, CNITECH , Chinese Academy of Sciences , Wenzhou , Zhejiang Province 325001 , PR China.,Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering , CAS , Wenzhou , Zhejiang Province 325001 , PR China
| | - Yong Wang
- Institute of Materials Research and Engineering , Fusionopolis Way , Innovis 138634 , Singapore
| | - Dejun Yang
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering , Wenzhou Medical University , Wenzhou , Zhejiang Province 325035 , PR China.,Wenzhou Institute of Biomaterials and Engineering, CNITECH , Chinese Academy of Sciences , Wenzhou , Zhejiang Province 325001 , PR China
| | - Wenjuan Huang
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering , Wenzhou Medical University , Wenzhou , Zhejiang Province 325035 , PR China.,Wenzhou Institute of Biomaterials and Engineering, CNITECH , Chinese Academy of Sciences , Wenzhou , Zhejiang Province 325001 , PR China.,Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering , CAS , Wenzhou , Zhejiang Province 325001 , PR China
| | - Pengyan Hao
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering , Wenzhou Medical University , Wenzhou , Zhejiang Province 325035 , PR China.,Wenzhou Institute of Biomaterials and Engineering, CNITECH , Chinese Academy of Sciences , Wenzhou , Zhejiang Province 325001 , PR China.,Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering , CAS , Wenzhou , Zhejiang Province 325001 , PR China
| | - Sheng Feng
- Department of Pathology and Laboratory Medicine , Hospital of the University of Pennsylvania , Philadelphia , Pennsylvania 19107 , United States
| | - Dietmar Appelhans
- Leibniz Institute of Polymer Research Dresden , Hohe Straße 6 , Dresden 01069 , Germany
| | - Tinghong Zhang
- Wenzhou Institute of Biomaterials and Engineering, CNITECH , Chinese Academy of Sciences , Wenzhou , Zhejiang Province 325001 , PR China.,Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering , CAS , Wenzhou , Zhejiang Province 325001 , PR China
| | - Xingjie Zan
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering , Wenzhou Medical University , Wenzhou , Zhejiang Province 325035 , PR China.,Wenzhou Institute of Biomaterials and Engineering, CNITECH , Chinese Academy of Sciences , Wenzhou , Zhejiang Province 325001 , PR China.,Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering , CAS , Wenzhou , Zhejiang Province 325001 , PR China
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82
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Dalchand N, Doğangün M, Ohno PE, Ma E, Martinson ABF, Geiger FM. Perturbation of Hydrogen-Bonding Networks over Supported Lipid Bilayers by Poly(allylamine hydrochloride). J Phys Chem B 2019; 123:4251-4257. [PMID: 31013086 DOI: 10.1021/acs.jpcb.9b02392] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Water is vital to many biochemical processes and is necessary for driving fundamental interactions of cell membranes with their external environments, yet it is difficult to probe the membrane/water interface directly and without the use of external labels. Here, we employ vibrational sum frequency generation spectroscopy to understand the role of interfacial water molecules above bilayers formed from zwitterionic (phosphatidylcholine) and anionic (phosphatidylglycerol, PG, and phosphatidylserine, PS) lipids as they are exposed to the common polycation poly(allylamine hydrochloride) (PAH) in 100 mM NaCl. We show that as the concentration of PAH is increased, the interfacial water molecules are irreversibly displaced and find that it requires 10 times more PAH to displace interfacial water molecules from membranes formed from purely zwitterionic lipids when compared to membranes that contain the anionic PG and PS lipids. This outcome is likely due to the difference in (1) the energy with which water molecules are bound to the lipid headgroups, (2) the number of water molecules bound to the headgroups, which is related to the headgroup area, and (3) the electrostatic interactions between the PAH molecules and the negatively charged lipids that are favored when compared to the zwitterionic lipid headgroups. The findings presented here contribute to establishing causal relationships in nanotoxicology and to understanding, controlling, and predicting the initial steps that lead to the lysis of cells exposed to membrane-disrupting polycations or to transfection.
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Affiliation(s)
- Naomi Dalchand
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60660 , United States
| | - Merve Doğangün
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60660 , United States
| | - Paul E Ohno
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60660 , United States
| | - Emily Ma
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60660 , United States
| | - Alex B F Martinson
- Materials Science Division , Argonne National Laboratory , 9700 S. Cass Avenue , Argonne, Lemont , Illinois 40439 , United States
| | - Franz M Geiger
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60660 , United States
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83
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Idema T, Kraft DJ. Interactions between model inclusions on closed lipid bilayer membranes. Curr Opin Colloid Interface Sci 2019. [DOI: 10.1016/j.cocis.2019.01.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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84
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Wang M, Mihut AM, Rieloff E, Dabkowska AP, Månsson LK, Immink JN, Sparr E, Crassous JJ. Assembling responsive microgels at responsive lipid membranes. Proc Natl Acad Sci U S A 2019; 116:5442-5450. [PMID: 30824593 PMCID: PMC6431181 DOI: 10.1073/pnas.1807790116] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Directed colloidal self-assembly at fluid interfaces can have a large impact in the fields of nanotechnology, materials, and biomedical sciences. The ability to control interfacial self-assembly relies on the fine interplay between bulk and surface interactions. Here, we investigate the interfacial assembly of thermoresponsive microgels and lipogels at the surface of giant unilamellar vesicles (GUVs) consisting of phospholipids bilayers with different compositions. By altering the properties of the lipid membrane and the microgel particles, it is possible to control the adsorption/desorption processes as well as the organization and dynamics of the colloids at the vesicle surface. No translocation of the microgels and lipogels through the membrane was observed for any of the membrane compositions and temperatures investigated. The lipid membranes with fluid chains provide highly dynamic interfaces that can host and mediate long-range ordering into 2D hexagonal crystals. This is in clear contrast to the conditions when the membranes are composed of lipids with solid chains, where there is no crystalline arrangement, and most of the particles desorb from the membrane. Likewise, we show that in segregated membranes, the soft microgel colloids form closely packed 2D crystals on the fluid bilayer domains, while hardly any particles adhere to the more solid bilayer domains. These findings thus present an approach for selective and controlled colloidal assembly at lipid membranes, opening routes toward the development of tunable soft materials.
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Affiliation(s)
- Meina Wang
- Physical Chemistry, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden;
| | - Adriana M Mihut
- Physical Chemistry, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden;
| | - Ellen Rieloff
- Physical Chemistry, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden
| | | | - Linda K Månsson
- Physical Chemistry, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden
| | - Jasper N Immink
- Physical Chemistry, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden
| | - Emma Sparr
- Physical Chemistry, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden
| | - Jérôme J Crassous
- Physical Chemistry, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden
- Institute of Physical Chemistry, RWTH Aachen University, 52074 Aachen, Germany
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85
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Biomechanical characterization of TIM protein-mediated Ebola virus-host cell adhesion. Sci Rep 2019; 9:267. [PMID: 30670766 PMCID: PMC6342996 DOI: 10.1038/s41598-018-36449-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 11/21/2018] [Indexed: 01/19/2023] Open
Abstract
Since the most recent outbreak, the Ebola virus (EBOV) epidemic remains one of the world’s public health and safety concerns. EBOV is a negative-sense RNA virus that can infect humans and non-human primates, and causes hemorrhagic fever. It has been proposed that the T-cell immunoglobulin and mucin domain (TIM) family proteins act as cell surface receptors for EBOV, and that the interaction between TIM and phosphatidylserine (PS) on the surface of EBOV mediates the EBOV–host cell attachment. Despite these initial findings, the biophysical properties of the TIM-EBOV interaction, such as the mechanical strength of the TIM-PS bond that allows the virus-cell interaction to resist external mechanical perturbations, have not yet been characterized. This study utilizes single-molecule force spectroscopy to quantify the specific interaction forces between TIM-1 or TIM-4 and the following binding partners: PS, EBOV virus-like particle, and EBOV glycoprotein/vesicular stomatitis virus pseudovirion. Depending on the loading rates, the unbinding forces between TIM and ligands ranged from 40 to 100 pN, suggesting that TIM-EBOV interactions are mechanically comparable to previously reported adhesion molecule–ligand interactions. The TIM-4–PS interaction is more resistant to mechanical force than the TIM-1–PS interaction. We have developed a simple model for virus–host cell interaction that is driven by its adhesion to cell surface receptors and resisted by membrane bending (or tension). Our model identifies critical dimensionless parameters representing the ratio of deformation and adhesion energies, showing how single-molecule adhesion measurements relate quantitatively to the mechanics of virus adhesion to the cell.
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86
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Sakai T, Seki H, Yoshida S, Hori H, Suzuki H, Nakamura T, Kawamura I. Interaction of Clear Flavor Emulsions Containing Lemon Essential Oils with Lipid Bilayers via a Quartz Crystal Microbalance. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2019. [DOI: 10.3136/fstr.25.879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
| | - Hayato Seki
- Graduate School of Engineering, Yokohama National University
| | | | | | | | | | - Izuru Kawamura
- Graduate School of Engineering, Yokohama National University
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87
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Affiliation(s)
- Evgeniia V. Konishcheva
- Department of Physical Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland
- Precision Macromolecular Chemistry, Institute Charles Sadron, UPR-22 CNRS, BP 84047, 23 rue du Loess, Cedex 2 67034 Strasbourg, France
| | - Ulmas E. Zhumaev
- Molecular Spectroscopy Department, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Wolfgang P. Meier
- Department of Physical Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland
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88
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Meng X, Li X. Size Limit and Energy Analysis of Nanoparticles during Wrapping Process by Membrane. NANOMATERIALS 2018; 8:nano8110899. [PMID: 30400180 PMCID: PMC6266830 DOI: 10.3390/nano8110899] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 10/28/2018] [Accepted: 10/30/2018] [Indexed: 12/31/2022]
Abstract
The wrapping of nanoparticles (NPs) by a membrane is a phenomenon of widespread and generic interest in biology, as well as in a variety of technological applications, such as drug delivery, clinical diagnostics, and biomedical imaging. However, the mechanisms of the interaction between the membrane and NPs are not well understood yet. In this paper, we have presented an analytic thermodynamic model to investigate the wrapping process of NPs by a cell membrane. It is found that the bending energy of the deformed membrane increases nonlinearly with increasing wrapping degree, which leads to a free energy barrier for the wrapping. On the basis of analysis results, the wrapping of NPs can be divided into three types, i.e., impossible wrapping, barrier wrapping, and free wrapping. Furthermore, a phase diagram for the wrapping of NPs has been constructed, which clarifies the interrelated effects of the size and the ligand density of NPs. We hope that this work can provide some help in understanding the physical mechanism of the wrapping of NPs.
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Affiliation(s)
- Xinpei Meng
- Mechatronics Technology R&D and Service Center, Dongguan Polytechnic, Dongguan 523808, China.
| | - Xinlei Li
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China.
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89
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Olenick LL, Troiano JM, Vartanian A, Melby ES, Mensch AC, Zhang L, Hong J, Mesele O, Qiu T, Bozich J, Lohse S, Zhang X, Kuech TR, Millevolte A, Gunsolus I, McGeachy AC, Doğangün M, Li T, Hu D, Walter SR, Mohaimani A, Schmoldt A, Torelli MD, Hurley KR, Dalluge J, Chong G, Feng ZV, Haynes CL, Hamers RJ, Pedersen JA, Cui Q, Hernandez R, Klaper R, Orr G, Murphy CJ, Geiger FM. Lipid Corona Formation from Nanoparticle Interactions with Bilayers. Chem 2018. [DOI: 10.1016/j.chempr.2018.09.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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90
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Shi X, Tian F. Multiscale Modeling and Simulation of Nano‐Carriers Delivery through Biological Barriers—A Review. ADVANCED THEORY AND SIMULATIONS 2018. [DOI: 10.1002/adts.201800105] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xinghua Shi
- CAS Key Laboratory for Nanosystem and Hierarchy FabricationCAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyChinese Academy of Sciences Beijing 100190 China
- School of Nanoscience and TechnologyUniversity of Chinese Academy of Sciences NO.19A Yuquan Road Beijing 100049 China
| | - Falin Tian
- CAS Key Laboratory for Nanosystem and Hierarchy FabricationCAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyChinese Academy of Sciences Beijing 100190 China
- School of Nanoscience and TechnologyUniversity of Chinese Academy of Sciences NO.19A Yuquan Road Beijing 100049 China
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91
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Nanoparticle-Lipid Interaction: Job Scattering Plots to Differentiate Vesicle Aggregation from Supported Lipid Bilayer Formation. COLLOIDS AND INTERFACES 2018. [DOI: 10.3390/colloids2040050] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The impact of nanomaterials on lung fluids, or on the plasma membrane of living cells, has prompted researchers to examine the interactions between nanoparticles and lipid vesicles. Recent studies have shown that nanoparticle-lipid interaction leads to a broad range of structures including supported lipid bilayers (SLB), particles adsorbed at the surface or internalized inside vesicles, and mixed aggregates. Currently, there is a need to have simple protocols that can readily evaluate the structures made from particles and vesicles. Here we apply the method of continuous variation for measuring Job scattering plots and provide analytical expressions for the scattering intensity in various scenarios. The result that emerges from the comparison between experiments and modeling is that electrostatics play a key role in the association, but it is not sufficient to induce the formation of supported lipid bilayers.
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92
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Eickelmann S, Danglad-Flores J, Chen G, Miettinen MS, Riegler H. Meniscus Shape around Nanoparticles Embedded in Molecularly Thin Liquid Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:11364-11373. [PMID: 30156419 DOI: 10.1021/acs.langmuir.8b02266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Individual nanoparticles embedded in molecularly thin films at planar substrates and the resulting film surface distortion (meniscus) adjacent to the nanoparticles are investigated by conventional optical reflection microscopy. Even for nanoparticles much smaller than the Rayleigh diffraction limit, the meniscus creates such a pronounced optical footprint that the location of the nanoparticles can be identified. This is because the decay length (lateral extension) of the meniscus exceeds the size of the nanoparticle by orders of magnitude. Therefore, for the first time, the exact shape of the meniscus of the liquid adjacent to a nanosize object could be measured and analyzed. The meniscus has a zero curvature shape (cosine hyperbolic). The liquid in the meniscus is in pressure equilibrium with the far-field planar film. The decay length decreases with the decreasing nanoparticle size. However, it is independent of the far-field film thickness. Supposedly, the decay length is determined by van der Waals interactions although it is unknown what determines its (unexpectedly large) absolute value. The presented technical approach may be used to investigate biological systems (for instance, surface distortions in supported membranes caused by proteins or protein aggregates).
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Affiliation(s)
| | - José Danglad-Flores
- Technical University Berlin , Strasse des 17. Juni 135 , 10623 Berlin , Germany
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93
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Curk T, Wirnsberger P, Dobnikar J, Frenkel D, Šarić A. Controlling Cargo Trafficking in Multicomponent Membranes. NANO LETTERS 2018; 18:5350-5356. [PMID: 29667410 DOI: 10.1021/acs.nanolett.8b00786] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Biological membranes typically contain a large number of different components dispersed in small concentrations in the main membrane phase, including proteins, sugars, and lipids of varying geometrical properties. Most of these components do not bind the cargo. Here, we show that such "inert" components can be crucial for the precise control of cross-membrane trafficking. Using a statistical mechanics model and molecular dynamics simulations, we demonstrate that the presence of inert membrane components of small isotropic curvatures dramatically influences cargo endocytosis, even if the total spontaneous curvature of such a membrane remains unchanged. Curved lipids, such as cholesterol, as well as asymmetrically included proteins and tethered sugars can, therefore, actively participate in the control of the membrane trafficking of nanoscopic cargo. We find that even a low-level expression of curved inert membrane components can determine the membrane selectivity toward the cargo size and can be used to selectively target membranes of certain compositions. Our results suggest a robust and general method of controlling cargo trafficking by adjusting the membrane composition without needing to alter the concentration of receptors or the average membrane curvature. This study indicates that cells can prepare for any trafficking event by incorporating curved inert components in either of the membrane leaflets.
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Affiliation(s)
- Tine Curk
- Institute of Physics , Chinese Academy of Sciences , Beijing , 100864 China
- Faculty of Chemistry and Chemical Engineering , University of Maribor , Maribor , 2000 Slovenia
| | - Peter Wirnsberger
- Department of Chemistry , University of Cambridge , Cambridge , CB2 1EW United Kingdom
| | - Jure Dobnikar
- Institute of Physics , Chinese Academy of Sciences , Beijing , 100864 China
- Department of Chemistry , University of Cambridge , Cambridge , CB2 1EW United Kingdom
| | - Daan Frenkel
- Department of Chemistry , University of Cambridge , Cambridge , CB2 1EW United Kingdom
| | - Anđela Šarić
- Department of Physics and Astronomy, Institute for the Physics of Living Systems , University College London , London , WC1E 6BT United Kingdom
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94
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Engelmann UM, Roeth AA, Eberbeck D, Buhl EM, Neumann UP, Schmitz-Rode T, Slabu I. Combining Bulk Temperature and Nanoheating Enables Advanced Magnetic Fluid Hyperthermia Efficacy on Pancreatic Tumor Cells. Sci Rep 2018; 8:13210. [PMID: 30181576 PMCID: PMC6123461 DOI: 10.1038/s41598-018-31553-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 08/14/2018] [Indexed: 01/08/2023] Open
Abstract
Many efforts are made worldwide to establish magnetic fluid hyperthermia (MFH) as a treatment for organ-confined tumors. However, translation to clinical application hardly succeeds as it still lacks of understanding the mechanisms determining MFH cytotoxic effects. Here, we investigate the intracellular MFH efficacy with respect to different parameters and assess the intracellular cytotoxic effects in detail. For this, MiaPaCa-2 human pancreatic tumor cells and L929 murine fibroblasts were loaded with iron-oxide magnetic nanoparticles (MNP) and exposed to MFH for either 30 min or 90 min. The resulting cytotoxic effects were assessed via clonogenic assay. Our results demonstrate that cell damage depends not only on the obvious parameters bulk temperature and duration of treatment, but most importantly on cell type and thermal energy deposited per cell during MFH treatment. Tumor cell death of 95% was achieved by depositing an intracellular total thermal energy with about 50% margin to damage of healthy cells. This is attributed to combined intracellular nanoheating and extracellular bulk heating. Tumor cell damage of up to 86% was observed for MFH treatment without perceptible bulk temperature rise. Effective heating decreased by up to 65% after MNP were internalized inside cells.
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Affiliation(s)
- Ulrich M Engelmann
- Institute of Applied Medical Engineering, RWTH Aachen University and University Hospital Aachen, Pauwelsstr. 20, D-52074, Aachen, Germany
| | - Anjali A Roeth
- Department of General, Visceral and Transplant Surgery, RWTH University Hospital Aachen, Pauwelsstr. 30, D-52074, Aachen, Germany
| | - Dietmar Eberbeck
- Physikalisch-Technische Bundesanstalt, Abbestr. 2-12, D-10587, Berlin, Germany
| | - Eva M Buhl
- Institute of Pathology, Electron Microscopic Facility, RWTH University Hospital Aachen, Pauwelsstr. 30, D-52074, Aachen, Germany
| | - Ulf P Neumann
- Department of General, Visceral and Transplant Surgery, RWTH University Hospital Aachen, Pauwelsstr. 30, D-52074, Aachen, Germany
| | - Thomas Schmitz-Rode
- Institute of Applied Medical Engineering, RWTH Aachen University and University Hospital Aachen, Pauwelsstr. 20, D-52074, Aachen, Germany
| | - Ioana Slabu
- Institute of Applied Medical Engineering, RWTH Aachen University and University Hospital Aachen, Pauwelsstr. 20, D-52074, Aachen, Germany.
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95
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Kröger APP, Paulusse JMJ. Single-chain polymer nanoparticles in controlled drug delivery and targeted imaging. J Control Release 2018; 286:326-347. [PMID: 30077737 DOI: 10.1016/j.jconrel.2018.07.041] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 07/17/2018] [Accepted: 07/27/2018] [Indexed: 12/26/2022]
Abstract
As a relatively new class of materials, single-chain polymer nanoparticles (SCNPs) just entered the field of (biomedical) applications, with recent advances in polymer science enabling the formation of bio-inspired nanosized architectures. Exclusive intramolecular collapse of individual polymer chains results in individual nanoparticles. With sizes an order of magnitude smaller than conventional polymer nanoparticles, SCNPs are in the size regime of many proteins and viruses (1-20 nm). Multifaceted syntheses and design strategies give access to a wide set of highly modular SCNP materials. This review describes how SCNPs have been rendered water-soluble and highlights ongoing research efforts towards biocompatible SCNPs with tunable properties for controlled drug delivery, targeted imaging and protein mimicry.
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Affiliation(s)
- A Pia P Kröger
- Department of Biomolecular Nanotechnology, MESA+ Institute for Nanotechnology and TechMed Institute for Health and Biomedical Technologies, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Jos M J Paulusse
- Department of Biomolecular Nanotechnology, MESA+ Institute for Nanotechnology and TechMed Institute for Health and Biomedical Technologies, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands; Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, P.O. Box 30.001, 9700 RB, Groningen, The Netherlands.
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96
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Mousseau F, Berret JF. The role of surface charge in the interaction of nanoparticles with model pulmonary surfactants. SOFT MATTER 2018; 14:5764-5774. [PMID: 29989135 DOI: 10.1039/c8sm00925b] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Inhaled nanoparticles traveling through the airways are able to reach the respiratory zone of the lungs. In such an event, the incoming particles first come into contact with the liquid lining the alveolar epithelium, the pulmonary surfactant. The pulmonary surfactant is composed of lipids and proteins that are assembled into large vesicular structures. The question of the nature of the biophysicochemical interaction with the pulmonary surfactant is central to understand how the nanoparticles can cross the air-blood barrier. Here we explore the phase behavior of sub-100 nm particles and surfactant substitutes under controlled conditions. Three types of surfactant mimetics, including the exogenous substitute Curosurf®, a drug administered to infants with respiratory distress syndrome, are tested together with aluminum oxide (Al2O3), silicon dioxide (SiO2) and polymer (latex) nanoparticles. The main result here is the observation of spontaneous nanoparticle-vesicle aggregation induced by coulombic attraction. The role of the surface charges is clearly established. We also evaluate the supported lipid bilayer formation recently predicted and find that in the cases studied these structures do not occur. Pertaining to the aggregate internal structure, fluorescence microscopy shows that the vesicles and particles are intermixed at the nano- to microscale. With particles acting as stickers between vesicles, it is anticipated that the presence of inhaled nanomaterials in the alveolar spaces could significantly modify the interfacial and bulk properties of the pulmonary surfactant and interfere with lung physiology.
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Affiliation(s)
- F Mousseau
- Matière et Systèmes Complexes, UMR 7057 CNRS Université Denis Diderot Paris-VII, Bâtiment Condorcet, 10 rue Alice Domon et Léonie Duquet, 75205 Paris, France.
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97
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Chen L, Li X, Zhang Y, Chen T, Xiao S, Liang H. Morphological and mechanical determinants of cellular uptake of deformable nanoparticles. NANOSCALE 2018; 10:11969-11979. [PMID: 29904774 DOI: 10.1039/c8nr01521j] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Understanding the interactions of nanoparticles (NPs) with cell membranes and regulating their cellular uptake processes are of fundamental importance to the design of drug delivery systems with minimum toxicity, high efficiency and long circulation time. Employing the procedure of coarse-graining, we built an elastically deformable NP model with tunable morphological and mechanical properties. We found that the cellular uptake of deformable NPs depends on their shape: an increase in the particle elasticity significantly slows the uptake rate of spherical NPs, slightly retards that of prolate NPs, and promotes the uptake of oblate NPs. The intrinsic mechanisms have been carefully investigated through analysis of the endocytic mechanisms and free energy calculations. These findings provide unique insights into how deformable NPs penetrate across cell membranes and offer novel possibilities for designing effective NP-based carriers for drug delivery.
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Affiliation(s)
- Liping Chen
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
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98
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Sadeghi M, Weikl TR, Noé F. Particle-based membrane model for mesoscopic simulation of cellular dynamics. J Chem Phys 2018; 148:044901. [PMID: 29390800 DOI: 10.1063/1.5009107] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
We present a simple and computationally efficient coarse-grained and solvent-free model for simulating lipid bilayer membranes. In order to be used in concert with particle-based reaction-diffusion simulations, the model is purely based on interacting and reacting particles, each representing a coarse patch of a lipid monolayer. Particle interactions include nearest-neighbor bond-stretching and angle-bending and are parameterized so as to reproduce the local membrane mechanics given by the Helfrich energy density over a range of relevant curvatures. In-plane fluidity is implemented with Monte Carlo bond-flipping moves. The physical accuracy of the model is verified by five tests: (i) Power spectrum analysis of equilibrium thermal undulations is used to verify that the particle-based representation correctly captures the dynamics predicted by the continuum model of fluid membranes. (ii) It is verified that the input bending stiffness, against which the potential parameters are optimized, is accurately recovered. (iii) Isothermal area compressibility modulus of the membrane is calculated and is shown to be tunable to reproduce available values for different lipid bilayers, independent of the bending rigidity. (iv) Simulation of two-dimensional shear flow under a gravity force is employed to measure the effective in-plane viscosity of the membrane model and show the possibility of modeling membranes with specified viscosities. (v) Interaction of the bilayer membrane with a spherical nanoparticle is modeled as a test case for large membrane deformations and budding involved in cellular processes such as endocytosis. The results are shown to coincide well with the predicted behavior of continuum models, and the membrane model successfully mimics the expected budding behavior. We expect our model to be of high practical usability for ultra coarse-grained molecular dynamics or particle-based reaction-diffusion simulations of biological systems.
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Affiliation(s)
- Mohsen Sadeghi
- Department of Mathematics and Computer Science, Freie Universität Berlin, Arnimallee 6, 14195 Berlin, Germany
| | - Thomas R Weikl
- Department of Theory and Bio-Systems, Max Planck Institute of Colloids and Interfaces, Science Park Golm, 14424 Potsdam, Germany
| | - Frank Noé
- Department of Mathematics and Computer Science, Freie Universität Berlin, Arnimallee 6, 14195 Berlin, Germany
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99
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Kalita S, Kandimalla R, Bhowal AC, Kotoky J, Kundu S. Functionalization of β-lactam antibiotic on lysozyme capped gold nanoclusters retrogress MRSA and its persisters following awakening. Sci Rep 2018; 8:5778. [PMID: 29636496 PMCID: PMC5893536 DOI: 10.1038/s41598-018-22736-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 02/28/2018] [Indexed: 01/07/2023] Open
Abstract
In this study we have reported an efficient antibacterial hybrid fabricated through surface functionalization of lysozyme capped gold nanoclusters (AUNC-L) with β-lactam antibiotic ampicillin (AUNC-L-Amp). The prepared hybrid not only reverted the MRSA resistance towards ampicillin but also demonstrated enhanced antibacterial activity against non-resistant bacterial strains. Most importantly, upon awakening through cis-2-decenoic acid (cis-DA) exposure, the MRSA persister got inhibited by the AUNC-L-Amp treatment. Intraperitoneal administration of this hybrid eliminates the systemic MRSA infection in a murine animal model. Topical application of this nano conjugate eradicated MRSA infection from difficult to treat diabetic wound of rat and accelerated the healing process. Due to inherent bio-safe nature of gold, AUNC-L alone or in the construct (AUNC-L-Amp) demonstrated excellent biocompatibility and did not indicate any deleterious effects in in vivo settings. We postulate that AUNC-L-Amp overcomes the elevated levels of β-lactamase at the site of MRSA antibiotic interaction with subsequent multivalent binding to the bacterial surface and enhanced permeation. Coordinated action of AUNC-L-Amp components precludes MRSA to attain resistance against the hybrid. We proposed that the inhibitory effect of AUNC-L-Amp against MRSA and its persister form is due to increased Amp concentration at the site of action, multivalent presentation and enhanced permeation of Amp through lysozyme-mediated cell wall lysis.
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Affiliation(s)
- Sanjeeb Kalita
- Drug Discovery Lab, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Assam, Guwahati, 781035, India.
| | - Raghuram Kandimalla
- Drug Discovery Lab, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Assam, Guwahati, 781035, India.
| | - Ashim Chandra Bhowal
- Soft Nano Laboratory, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Assam, Guwahati, 781035, India
| | - Jibon Kotoky
- Drug Discovery Lab, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Assam, Guwahati, 781035, India
| | - Sarathi Kundu
- Soft Nano Laboratory, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Assam, Guwahati, 781035, India.
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100
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Yu Q, Othman S, Dasgupta S, Auth T, Gompper G. Nanoparticle wrapping at small non-spherical vesicles: curvatures at play. NANOSCALE 2018; 10:6445-6458. [PMID: 29565057 DOI: 10.1039/c7nr08856f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanoparticles in biological systems encounter lipid-bilayer membranes as barriers. They interact with plasma membranes, membranous organelles, such as the endoplasmic reticulum and the Golgi apparatus, the nucleus, and intracellular and extracellular vesicles, such as autophagosomes, lysosomes, and exosomes. Extracellular vesicles have recently attracted particular attention, as they are involved in the transmission of biological signals and as regulators for biological processes. For example, exosomes, small vesicles containing proteins, mRNA, and miRNA, that are released by cells into the extracellular environment, have been suggested to participate in tumor metastasis. Furthermore, vesicles can be applied as targeted-drug-delivery systems. We systematically characterize wrapping of spherical nanoparticles that enter and exit vesicles, depending on particle size, vesicle size, vesicle reduced volume, and membrane spontaneous curvature. We predict the complex wrapping behavior, in particular for large particle-to-vesicle size ratios, where the shape changes of the free membrane contribute significantly to the deformation energy and where nanoparticle wrapping transitions and vesicle shape transitions are coupled. Partial-wrapped membrane-bound particles impose boundary conditions on the membrane that stabilise oblates and stomatocytes for particle entry, and prolates and stomatocytes for particle exit. Our results suggest that nanoparticles may stimulate autophagocytic engulfment, which would facilitate transport of the nanoparticles into lysosomes and would lead to subsequent degradation of nanoparticle-attached proteins.
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Affiliation(s)
- Qingfen Yu
- Theoretical Soft Matter and Biophysics, Institute of Complex Systems and Institute for Advanced Simulation, Forschungszentrum Jülich, D-52425 Jülich, Germany.
| | - Sameh Othman
- Theoretical Soft Matter and Biophysics, Institute of Complex Systems and Institute for Advanced Simulation, Forschungszentrum Jülich, D-52425 Jülich, Germany.
| | - Sabyasachi Dasgupta
- Theoretical Soft Matter and Biophysics, Institute of Complex Systems and Institute for Advanced Simulation, Forschungszentrum Jülich, D-52425 Jülich, Germany. and Mechanobiology Institute, National University of Singapore, 11899 Singapore
| | - Thorsten Auth
- Theoretical Soft Matter and Biophysics, Institute of Complex Systems and Institute for Advanced Simulation, Forschungszentrum Jülich, D-52425 Jülich, Germany.
| | - Gerhard Gompper
- Theoretical Soft Matter and Biophysics, Institute of Complex Systems and Institute for Advanced Simulation, Forschungszentrum Jülich, D-52425 Jülich, Germany.
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