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Tang K, Cui X. A Review on Investigating the Interactions between Nanoparticles and the Pulmonary Surfactant Monolayer with Coarse-Grained Molecular Dynamics Method. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:11829-11842. [PMID: 38809819 DOI: 10.1021/acs.langmuir.4c00909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
Pulmonary drug delivery has garnered significant attention due to its targeted local lung action, minimal toxic side effects, and high drug utilization. However, the physicochemical properties of inhaled nanoparticles (NPs) used as drug carriers can influence their interactions with the pulmonary surfactant (PS) monolayer, potentially altering the fate of the NPs and impairing the biophysical function of the PS monolayer. Thus, the objective of this review is to summarize how the physicochemical properties of NPs affect their interactions with the PS monolayer. Initially, the definition and properties of NPs, as well as the composition and characteristics of the PS monolayer, are introduced. Subsequently, the coarse-grained molecular dynamics (CGMD) simulation method for studying the interactions between NPs and the PS monolayer is presented. Finally, the implications of the hydrophobicity, size, shape, surface charge, surface modification, and aggregation of NPs on their interactions with the PS monolayer and on the composition of biomolecular corona are discussed. In conclusion, gaining a deeper understanding of the effects of the physicochemical properties of NPs on their interactions with the PS monolayer will contribute to the development of safer and more effective nanomedicines for pulmonary drug delivery.
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Affiliation(s)
- Kailiang Tang
- School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xinguang Cui
- School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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2
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Buckley A, Warren J, Hussain R, Smith R. Synchrotron radiation circular dichroism spectroscopy reveals that gold and silver nanoparticles modify the secondary structure of a lung surfactant protein B analogue. NANOSCALE 2023; 15:4591-4603. [PMID: 36763129 DOI: 10.1039/d2nr06107d] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Inhaled nanoparticles (NPs) depositing in the alveolar region of the lung interact initially with a surfactant layer and in vitro studies have demonstrated that NPs can adversely affect the biophysical function of model pulmonary surfactants (PS), of which surfactant protein B (SP-B) is a key component. Other studies have demonstrated the potential for NPs to modify the structure and function of proteins. It was therefore hypothesised that NPs may affect the biophysical function of PS by modifying the structure of SP-B. Synchrotron radiation circular dichroism (SRCD) spectroscopy was used to explore the effect of various concentrations of gold nanoparticles (AuNPs) (5, 10, 20 nm), silver nanoparticles (AgNPs) (10 nm) and silver citrate on the secondary structure of surfactant protein B analogue, SP-B1-25, in a TFE/PB dispersion. For Au and Ag NPs the SRCD spectra indicated a concentration dependent reduction in the α-helical structure of SP-B1-25 (5 nm AuNP ≈ 10 nm AgNP ≫ 10 nm AuNP > 20 nm AuNP). For AuNPs the effect was greater for the 5 nm size, which was not fully explained by consideration of surface area. The impact of the 10 nm AgNPs was greater than that of the 10 nm AuNPs and the effect of AgNPs was greater than that of silver citrate at equivalent Ag mass concentrations. For 10 nm AuNPs, SRCD spectra for dispersions in, the more physiologically relevant, DPPC showed a similar concentration dependent pattern. The results demonstrate the potential for inhaled NPs to modify SP-B1-25 structure and thus potentially adversely impact the physiological function of the lung, however, further studies are necessary to confirm this.
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Affiliation(s)
- Alison Buckley
- Toxicology Department, UK Health Security Agency, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0RQ, UK.
| | - James Warren
- Toxicology Department, UK Health Security Agency, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0RQ, UK.
| | - Rohanah Hussain
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, UK
| | - Rachel Smith
- Toxicology Department, UK Health Security Agency, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0RQ, UK.
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3
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Rogachev AV, Novikova NN, Kovalchuk MV, Malakhova YN, Konovalov OV, Stepina ND, Shlyapnikova EA, Kanev IL, Shlyapnikov YM, Yakunin SN. Permeation of Nanoparticles into Pulmonary Surfactant Monolayer: In Situ X-ray Standing Wave Studies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:3630-3640. [PMID: 35302765 DOI: 10.1021/acs.langmuir.1c02179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
High-resolution X-ray techniques were applied to examine the effects of gold nanoparticles (size <5 nm) on natural pulmonary surfactant and pure DPPC monolayers preliminarily formed on water subphase in a Langmuir trough. Hydrophobic and hydrophilic nanoparticles were delivered from nanoaerosol using electrodeposition method. Grazing incidence diffraction, X-ray reflectivity, and X-ray standing wave measurements allow to monitor the changes in molecular organization of lipid monolayer and to locate the position of gold nanoparticles. X-ray experiments were performed over a period of 9-14 h. The obtained results evidenced that, on a long time scale, the deposition of nanoparticles, even at low doses, can induce pronounced alterations in lipid monolayer. The presented data can help to elucidate the mechanism of pulmonary translocation of inhaled nanoparticles that is of special interest for biomedical investigations of potential risk of nanoaerosols for human health.
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Affiliation(s)
- A V Rogachev
- National Research Center Kurchatov Institute, National Research Center Kurchatov Institute, Moscow, 123182 Russia
| | - N N Novikova
- National Research Center Kurchatov Institute, National Research Center Kurchatov Institute, Moscow, 123182 Russia
| | - M V Kovalchuk
- National Research Center Kurchatov Institute, National Research Center Kurchatov Institute, Moscow, 123182 Russia
| | - Yu N Malakhova
- National Research Center Kurchatov Institute, National Research Center Kurchatov Institute, Moscow, 123182 Russia
| | - O V Konovalov
- ESRF─The European Synchron Radiation Facility, 38043 Grenoble, France
| | - N D Stepina
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre, "Crystallography and Photonics″, Russian Academy of Sciences, Moscow, 119333 Russia
| | - E A Shlyapnikova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, 142290 Russia
| | - I L Kanev
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, 142290 Russia
| | - Yu M Shlyapnikov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, 142290 Russia
| | - S N Yakunin
- National Research Center Kurchatov Institute, National Research Center Kurchatov Institute, Moscow, 123182 Russia
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5
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Fluid Films as Models for Understanding the Impact of Inhaled Particles in Lung Surfactant Layers. COATINGS 2022. [DOI: 10.3390/coatings12020277] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Pollution is currently a public health problem associated with different cardiovascular and respiratory diseases. These are commonly originated as a result of the pollutant transport to the alveolar cavity after their inhalation. Once pollutants enter the alveolar cavity, they are deposited on the lung surfactant (LS) film, altering their mechanical performance which increases the respiratory work and can induce a premature alveolar collapse. Furthermore, the interactions of pollutants with LS can induce the formation of an LS corona decorating the pollutant surface, favoring their penetration into the bloodstream and distribution along different organs. Therefore, it is necessary to understand the most fundamental aspects of the interaction of particulate pollutants with LS to mitigate their effects, and design therapeutic strategies. However, the use of animal models is often invasive, and requires a careful examination of different bioethics aspects. This makes it necessary to design in vitro models mimicking some physico-chemical aspects with relevance for LS performance, which can be done by exploiting the tools provided by the science and technology of interfaces to shed light on the most fundamental physico-chemical bases governing the interaction between LS and particulate matter. This review provides an updated perspective of the use of fluid films of LS models for shedding light on the potential impact of particulate matter in the performance of LS film. It should be noted that even though the used model systems cannot account for some physiological aspects, it is expected that the information contained in this review can contribute on the understanding of the potential toxicological effects of air pollution.
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6
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Oliveira ON, Caseli L, Ariga K. The Past and the Future of Langmuir and Langmuir-Blodgett Films. Chem Rev 2022; 122:6459-6513. [PMID: 35113523 DOI: 10.1021/acs.chemrev.1c00754] [Citation(s) in RCA: 122] [Impact Index Per Article: 61.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The Langmuir-Blodgett (LB) technique, through which monolayers are transferred from the air/water interface onto a solid substrate, was the first method to allow for the controlled assembly of organic molecules. With its almost 100 year history, it has been the inspiration for most methods to functionalize surfaces and produce nanocoatings, in addition to serving to explore concepts in molecular electronics and nanoarchitectonics. This paper provides an overview of the history of Langmuir monolayers and LB films, including the potential use in devices and a discussion on why LB films are seldom considered for practical applications today. Emphasis is then given to two areas where these films offer unique opportunities, namely, in mimicking cell membrane models and exploiting nanoarchitectonics concepts to produce sensors, investigate molecular recognitions, and assemble molecular machines. The most promising topics for the short- and long-term prospects of the LB technique are also highlighted.
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Affiliation(s)
- Osvaldo N Oliveira
- São Carlos Institute of Physics, University of Sao Paulo, CP 369, 13560-970 Sao Carlos, SP, Brazil
| | - Luciano Caseli
- Department of Chemistry, Federal University of São Paulo, 09913-030 Diadema, SP, Brazil
| | - Katsuhiko Ariga
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 305-0044 Tsukuba, Japan.,Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-0827, Japan
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7
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Jiao F, Hossain SI, Sang J, Saha SC, Gu Y, Hughes ZE, Gandhi NS. Molecular basis of transport of surface functionalised gold nanoparticles to pulmonary surfactant. RSC Adv 2022; 12:18012-18021. [PMID: 35800307 PMCID: PMC9205331 DOI: 10.1039/d2ra01892f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 06/08/2022] [Indexed: 11/24/2022] Open
Abstract
Ligands like alkanethiol (e.g. dodecanethiol, hexadecanethiol, etc.) and polymers (e.g. poly(vinyl pyrrolidone), polyethylene glycol-thiol) capped to the gold nanoparticles (AuNPs) are widely used in biomedical field as drug carriers and as promising materials for probing and manipulating cellular processes. Ligand functionalised AuNPs are known to interact with the pulmonary surfactant (PS) monolayer once reaching the alveolar region. Therefore, it is crucial to understand the interaction between AuNPs and PS monolayers. Using coarse-grained molecular dynamics simulations, the effect of ligand density, and ligand length have been studied for two classes of ligands on a PS model monolayer consisting of DPPC, POPG, cholesterol and SP-B (mini-peptide). The ligands considered in this study are alkanethiol and polyethylene glycol (PEG) thiol as examples of hydrophobic and hydrophilic ligands, respectively. It was observed that the interaction between AuNPs and PS changes the biophysical properties of PS monolayer in compressed and expanded states. The AuNPs with hydrophilic ligand, can penetrate through the monolayer more easily, while the AuNPs with hydrophobic ligand are embedded in the monolayer and participated in deforming the monolayer structure particularly the monolayer in the compressed state. The bare AuNPs hinder to lower the monolayer surface tension value at the interface, however introducing ligand to the bare AuNPs or increasing the ligand length and density have an impact of lowering of monolayer surface tension to a minor extent. The simulation results guide the design of ligand protected NPs as drug carriers and can identify the nanoparticles' potential side effects on lung surfactant. Molecular-level observations of the behavior of ligand functionalised gold nanoparticles with a lipid monolayers.![]()
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Affiliation(s)
- Fengxuan Jiao
- School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, PR China
| | - Sheikh I. Hossain
- School of Life Science, University of Technology Sydney, 81 Broadway, Ultimo, NSW 2007, Australia
| | - Jianbing Sang
- School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, PR China
| | - Suvash C. Saha
- School of Mechanical and Mechatronic Engineering, University of Technology Sydney, 81 Broadway, Ultimo, NSW 2007, Australia
| | - YuanTong Gu
- School of Mechanical Medical & Process Engineering, Queensland University of Technology, 2 George Street, GPO Box 2434, Brisbane, QLD 4000, Australia
| | - Zak E. Hughes
- School of Chemistry and Biosciences, The University of Bradford, Bradford, BD7 1DP, UK
| | - Neha S. Gandhi
- Centre for Genomics and Personalised Health, School of Chemistry and Physics, Queensland University of Technology, 2 George Street, GPO Box 2434, Brisbane, QLD 4000, Australia
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8
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Wu M, Wang F, Chen J, Zhang H, Zeng H, Liu J. Interactions of model airborne particulate matter with dipalmitoyl phosphatidylcholine and a clinical surfactant Calsurf. J Colloid Interface Sci 2021; 607:1993-2009. [PMID: 34798708 DOI: 10.1016/j.jcis.2021.09.193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 12/31/2022]
Abstract
HYPOTHESIS Lung surfactant protects lung tissue and reduces the surface tension in the alveoli during respiration. Particulate matter with an aerodynamic diameter of less than 2.5 μm (PM2.5), which invades primely through inhalation, can deposit on and interact with the surfactant layer, leading to changes in the biophysical and morphological properties of the lung surfactant. EXPERIMENTS Langmuir monolayers of 1,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine (DPPC) and clinical surfactant Calsurf were investigated with a PM2.5 model injected into the water subphase, which were characterized by surface pressure-area isotherms, Brewster angle microscopy, atomic force microscopy, fluorescent microscopy, and x-ray photoelectron spectroscopy. The binding between DPPC/Calsurf and PM2.5 was studied using isothermal titration calorimetry. FINDINGS PM2.5 induced the expansion of the monolayers at low surface pressure (п) and film condensation at high п. Aggregation of PM2.5 mainly occurred at the interface of liquid expanded/liquid condensed (LE/LC) phases. PM2.5 led to slimmer and ramified LC domains on DPPC and the reduction of nano-sized condensed domains on Calsurf. Both DPPC and Calsurf showed fast binding with PM2.5 through complex binding modes attributed to the heterogeneity and amphiphilic property of PM2.5. This study improves the fundamental understanding of PM2.5-lung surfactant interaction and shows useful implications of the toxicity of PM2.5 through respiration process.
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Affiliation(s)
- Min Wu
- The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510700, China; Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Feifei Wang
- The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510700, China; Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Jingsi Chen
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Hao Zhang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
| | - Jifang Liu
- The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510700, China.
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9
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Caselli L, Ridolfi A, Mangiapia G, Maltoni P, Moulin JF, Berti D, Steinke NJ, Gustafsson E, Nylander T, Montis C. Interaction of nanoparticles with lipid films: the role of symmetry and shape anisotropy. Phys Chem Chem Phys 2021; 24:2762-2776. [PMID: 34647947 DOI: 10.1039/d1cp03201a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The bioactivity, biological fate and cytotoxicity of nanomaterials when they come into contact with living organisms are determined by their interaction with biomacromolecules and biological barriers. In this context, the role of symmetry/shape anisotropy of both the nanomaterials and biological interfaces in their mutual interaction, is a relatively unaddressed issue. Here, we study the interaction of gold nanoparticles (NPs) of different shapes (nanospheres and nanorods) with biomimetic membranes of different morphology, i.e. flat membranes (2D symmetry, representative of the most common plasma membrane geometry), and cubic membranes (3D symmetry, representative of non-lamellar membranes, found in Nature under certain biological conditions). For this purpose we used an ensemble of complementary structural techniques, including Neutron Reflectometry, Grazing Incidence Small-Angle Neutron Scattering, on a nanometer lengthscale and Confocal Laser Scanning Microscopy on a micrometer length scale. We found that the structural stability of the membrane towards NPs is dependent on the topological characteristic of the lipid assembly and of the NPs, where a higher symmetry gave higher stability. In addition, Confocal Laser Scanning Microscopy analyses highlighted that NPs interact with cubic and lamellar phases according to two distinct mechanisms, related to the different structures of the lipid assemblies. This study for the first time systematically addresses the role of NPs shape in the interaction with lipid assemblies with different symmetry. The results will contribute to improve the fundamental knowledge on lipid interfaces and will provide new insights on the biological function of phase transitions as a response strategy to the exposure of NPs.
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Affiliation(s)
- Lucrezia Caselli
- Department of Chemistry, University of Florence and CSGI, Florence, Italy.
| | - Andrea Ridolfi
- Department of Chemistry, University of Florence and CSGI, Florence, Italy. .,ISMN-CNR and CSGI, Bologna, Italy
| | - Gaetano Mangiapia
- German Engineering Materials Science Centre (GEMS) at Heinz Maier-Leibnitz Zentrum (MLZ), Helmholtz-Zentrum Hereon, Lichtenbergstr. 1, 85748 Garching bei München, Germany
| | | | - Jean-François Moulin
- German Engineering Materials Science Centre (GEMS) at Heinz Maier-Leibnitz Zentrum (MLZ), Helmholtz-Zentrum Hereon, Lichtenbergstr. 1, 85748 Garching bei München, Germany
| | - Debora Berti
- Department of Chemistry, University of Florence and CSGI, Florence, Italy.
| | | | - Emil Gustafsson
- Department of Chemistry, Uppsala University, Uppsala, Sweden
| | - Tommy Nylander
- Department of Chemistry, Physical Chemistry, Lund University, Lund, Sweden. .,NanoLund, Lund University, Lund (Sweden, Lund Institute of Advanced Neutron and X-Ray Science - LINXS), Lund, Sweden
| | - Costanza Montis
- Department of Chemistry, University of Florence and CSGI, Florence, Italy.
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10
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Da Silva E, Vogel U, Hougaard KS, Pérez-Gil J, Zuo YY, Sørli JB. An adverse outcome pathway for lung surfactant function inhibition leading to decreased lung function. Curr Res Toxicol 2021; 2:225-236. [PMID: 34345865 PMCID: PMC8320609 DOI: 10.1016/j.crtox.2021.05.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 05/19/2021] [Accepted: 05/25/2021] [Indexed: 12/27/2022] Open
Abstract
Inhaled substances, such as consumer products, chemicals at the workplace, and nanoparticles, can affect the lung function in several ways. In this paper, we explore the adverse outcome pathway (AOP) that starts when inhaled substances that reach the alveoli inhibit the function of the lung surfactant, and leads to decreased lung function. Lung surfactant covers the inner surface of the alveoli, and regulates the surface tension at the air-liquid interface during breathing. The inhibition of the lung surfactant function leads to alveolar collapse because of the resulting high surface tension at the end of expiration. The collapsed alveoli can be re-opened by inspiration, but this re-opening causes shear stress on cells covering the alveoli. This can damage the alveolar-capillary membrane integrity, allowing blood components to enter the alveolar airspace. Blood components, such as albumin, can interact with the lung surfactant and further inhibit its function. The collapse of the alveoli is responsible for a decrease in the surface area available for blood oxygenation, and it reduces the volume of air that can be inhaled and exhaled. These different key events lead to decreased lung function, characterized by clinical signs of respiratory toxicity and reduced blood oxygenation. Here we present the weight of evidence that supports the AOP, and we give an overview of the methods available in vitro and in vivo to measure each key event of the pathway, and how this AOP can potentially be used in screening for inhalation toxicity.
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Key Words
- AO, adverse outcome
- AOP, adverse outcome pathway
- ARDS, acute respiratory distress syndrome
- Adverse outcome pathway
- Alternative method
- EAGMST, Extended Advisory Group on Molecular Screening and Toxicogenomics
- GHS, Globally Harmonized System of Classification and Labelling of Chemicals
- Inhalation
- KE, key event
- Lung surfactant
- MIE, molecular initiating event
- Nanomaterials
- New approach methodology
- OECD, Organisation for Economic Cooperation and Development
- OI, oxygenation index
- PaO2, dissolved oxygen in the plasma
- SaO2, percentage of hemoglobin saturated with oxygen
- Spray products
- TEER, trans epithelial electrical resistance
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Affiliation(s)
- Emilie Da Silva
- National Research Centre for the Working Environment, Copenhagen, Denmark
- DTU Environment, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Ulla Vogel
- National Research Centre for the Working Environment, Copenhagen, Denmark
- DTU Health Tech, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Karin S. Hougaard
- National Research Centre for the Working Environment, Copenhagen, Denmark
- Department of Public Health, University of Copenhagen, Denmark
| | - Jesus Pérez-Gil
- Faculty of Biology and Research Institute “12 de Octubre (imas12)”, Complutense University, Madrid, Spain
| | - Yi Y. Zuo
- Department of Mechanical Engineering, University of Hawaii at Manoa, Honolulu, HI, United States
| | - Jorid B. Sørli
- National Research Centre for the Working Environment, Copenhagen, Denmark
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11
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MacCormack TJ, Meli MV, Ede JD, Ong KJ, Rourke JL, Dieni CA. Commentary: Revisiting nanoparticle-assay interference: There's plenty of room at the bottom for misinterpretation. Comp Biochem Physiol B Biochem Mol Biol 2021; 255:110601. [PMID: 33857590 DOI: 10.1016/j.cbpb.2021.110601] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/05/2021] [Accepted: 04/07/2021] [Indexed: 12/15/2022]
Abstract
Engineered nanomaterials (ENMs) are a diverse class of materials whose distinct properties make them desirable in a multitude of applications. The proliferation of nanotoxicology research has improved our understanding of ENM toxicity, but an under appreciation for their potential to interfere with biochemical assays has hampered progress in the field. The physicochemical properties of ENMs can promote their interaction with membranes or biomacromolecules (e.g. proteins, genomic material). This can influence the activity of enzymes used as biomarkers or as reagents in biochemical assay protocols, bind indicator dyes in cytotoxicity tests, and/or interfere with the cellular mechanisms controlling the uptake of such dyes. The spectral characteristics of some ENMs can cause interference with common assay chromophores, fluorophores, and radioisotope scintillation cocktails. Finally, the inherent chemical reactivity of some ENMs can short circuit assay mechanisms by directly oxidizing or reducing indicator dyes. These processes affect data quality and may lead to significant misinterpretations regarding ENM safety. We provide an overview of some ENM properties that facilitate assay interference, examples of interference and the erroneous conclusions that may result from it, and a number of general and specific recommendations for validating cellular and biochemical assay protocols in nanotoxicology studies.
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Affiliation(s)
- T J MacCormack
- Department of Chemistry and Biochemistry, Mount Allison University, 63C York St., Sackville, NB E4L1E4, Canada.
| | - M-V Meli
- Department of Chemistry and Biochemistry, Mount Allison University, 63C York St., Sackville, NB E4L1E4, Canada
| | - J D Ede
- Vireo Advisors, LLC, Boston, MA 02130-4323, USA
| | - K J Ong
- Vireo Advisors, LLC, Boston, MA 02130-4323, USA
| | - J L Rourke
- Department of Chemistry and Biochemistry, Mount Allison University, 63C York St., Sackville, NB E4L1E4, Canada
| | - C A Dieni
- Department of Physical and Environmental Sciences, Colorado Mesa University, 1100 North Ave., Grand Junction, CO 81501, USA
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12
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Hossain SI, Gandhi NS, Hughes ZE, Saha SC. Computational Studies of Lipid-Wrapped Gold Nanoparticle Transport Through Model Lung Surfactant Monolayers. J Phys Chem B 2021; 125:1392-1401. [PMID: 33529013 DOI: 10.1021/acs.jpcb.0c09518] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Colloidal nanoparticles, such as gold nanoparticles (AuNPs), are promising materials for the delivery of hydrophilic drugs via the pulmonary route. The inhaled nanoparticle drug carriers primarily deposit in lung alveoli and interact with the alveolar surface known as lung surfactants. Therefore, it is vital to understand the interactions of nanocarriers with the surfactant layer. To understand the interactions at the molecular level, here we simulated model lung surfactant monolayers with phospholipid (PL)-wrapped AuNPs at the vacuum-water interface using coarse-grained molecular dynamics simulations. The PL-wrapped AuNPs quickly adsorbed into the surfactant layer, altered the structural properties of the monolayer, and at high concentrations initiated the compressed monolayer to collapse/buckle. Among the surfactant monolayer lipid components, cholesterol adsorbed to the AuNPs preferentially over PL species. The position of the adsorbed PL-AuNPs within the monolayer, and subsequent monolayer perturbation, vary depending on the monolayer phase, monolayer composition, and species of PL used as a ligand. Information provided by these molecular dynamic simulations helps to rationalize why some colloidal nanoparticles work better as nanocarriers than others and aid the design of new ones, to avoid biological toxicity and improve efficacy for pulmonary drug delivery.
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Affiliation(s)
- Sheikh I Hossain
- School of Mechanical and Mechatronic Engineering, University of Technology Sydney, 81 Broadway, Ultimo, New South Wales 2007, Australia
| | - Neha S Gandhi
- School of Chemistry and Physics, Faculty of Science and Centre for Genomics and Personalised Health, Queensland University of Technology, 2 George Street, GP.O. Box 2434, Brisbane, Queensland 4000, Australia
| | - Zak E Hughes
- School of Chemistry and Biosciences, The University of Bradford, Bradford BD7 1DP, U.K
| | - Suvash C Saha
- School of Mechanical and Mechatronic Engineering, University of Technology Sydney, 81 Broadway, Ultimo, New South Wales 2007, Australia
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13
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Wang F, Liu J, Zeng H. Interactions of particulate matter and pulmonary surfactant: Implications for human health. Adv Colloid Interface Sci 2020; 284:102244. [PMID: 32871405 PMCID: PMC7435289 DOI: 10.1016/j.cis.2020.102244] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 08/12/2020] [Accepted: 08/14/2020] [Indexed: 12/22/2022]
Abstract
Particulate matter (PM), which is the primary contributor to air pollution, has become a pervasive global health threat. When PM enters into a respiratory tract, the first body tissues to be directly exposed are the cells of respiratory tissues and pulmonary surfactant. Pulmonary surfactant is a pivotal component to modulate surface tension of alveoli during respiration. Many studies have proved that PM would interact with pulmonary surfactant to affect the alveolar activity, and meanwhile, pulmonary surfactant would be adsorbed to the surface of PM to change the toxic effect of PM. This review focuses on recent studies of the interactions between micro/nanoparticles (synthesized and environmental particles) and pulmonary surfactant (natural surfactant and its models), as well as the health effects caused by PM through a few significant aspects, such as surface properties of PM, including size, surface charge, hydrophobicity, shape, chemical nature, etc. Moreover, in vitro and in vivo studies have shown that PM leads to oxidative stress, inflammatory response, fibrosis, and cancerization in living bodies. By providing a comprehensive picture of PM-surfactant interaction, this review will benefit both researchers for further studies and policy-makers for setting up more appropriate regulations to reduce the adverse effects of PM on public health.
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Affiliation(s)
- Feifei Wang
- The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510700, China,Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Jifang Liu
- The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510700, China.
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
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14
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Bodik M, Jergel M, Majkova E, Siffalovic P. Langmuir films of low-dimensional nanomaterials. Adv Colloid Interface Sci 2020; 283:102239. [PMID: 32854017 DOI: 10.1016/j.cis.2020.102239] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 08/11/2020] [Accepted: 08/11/2020] [Indexed: 02/08/2023]
Abstract
A large number of low-dimensional nanomaterials having different shapes and being dispersible in solvents open a fundamental question if there is a universal deposition technique for the monolayer formation. A monolayer formation of various nanomaterials at the air-water interface, also known as a Langmuir film, is a well-established technique even for the large group of the recently developed low-dimensional nanomaterials. In this review, we cover the monolayer formation of the zero-dimensional, one-dimensional and two-dimensional nanomaterials. Thanks to the formation of a Langmuir layer at the thermodynamic equilibrium, by using a suitable nanomaterial dispersion and subphase, the monolayers can be formed from all kinds of materials, ranging from the graphene oxide to the semiconducting quantum dots. In this review, we will discuss the basic requirements for the successful formation of monolayers and summarize the recent scientific advances in the field of Langmuir films.
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15
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Structure of DPPC Monolayers at the Air/Buffer Interface: A Neutron Reflectometry and Ellipsometry Study. COATINGS 2020. [DOI: 10.3390/coatings10060507] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Langmuir monolayers of 1,2-dipalmitoyl-sn-glycerol-3-phosphocholine, known as DPPC, at the air/water interface are extensively used as model systems of biomembranes and pulmonary surfactant. The properties of these monolayers have been mainly investigated by surface pressure–area isotherms coupled with different complementary techniques such as Brewster angle microscopy, for example. Several attempts using neutron reflectometry (NR) or ellipsometry have also appeared in the literature. Here, we report structural information obtained by using NR and ellipsometry on DPPC monolayers in the liquid condensed phase. On one side, NR can resolve the thickness of the aliphatic tails and the degree of hydration of the polar headgroups. On the other side, ellipsometry gives information on the refractive index and, therefore, on the physical state of the monolayer. The thickness and surface excess obtained by multiple-angle-of-incidence ellipsometry (MAIE) is compared with the results from NR measurements yielding a good agreement. Besides, a novel approach is reported to calculate the optical anisotropy of the DPPC monolayer that depends on the orientation of the aliphatic chains. The results from both NR and ellipsometry are also discussed in the context of the existing results for DPPC monolayers at the air/water interface. The differences observed are rationalized by the presence of buffer molecules interacting with phospholipids.
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16
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Schüer JJ, Arndt A, Wölk C, Pinnapireddy SR, Bakowsky U. Establishment of a Synthetic In Vitro Lung Surfactant Model for Particle Interaction Studies on a Langmuir Film Balance. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4808-4819. [PMID: 32306733 DOI: 10.1021/acs.langmuir.9b03712] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
With the intention to provide a robust and economical model that can be used for predicting particle interactions with the pulmonary surfactant, this study was aimed to find an artificial surfactant model that perfectly mimics the properties of the natural pulmonary surfactant. A surfactant model should be reproducible, robust, and able to predict interactions between the pulmonary surfactant and exogenous influences from air and the aqueous site. We compared three synthetic models with the natural bovine surfactant Alveofact. The lung conditions were simulated by spreading the surfactants at the air/aqueous interface on a Langmuir trough with movable barriers. All three artificial surfactant models showed properties very similar to that of Alveofact. Visualization of the monolayers by atomic force microscopy revealed very similar structures with domain formation. The Tanaka lipid mixture has already shown good results in vitro and in vivo in previous studies. The 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC)-1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) model has large conformations in the surface pressure isotherms and showed a biomimetic exclusion plateau, indicative of an effective lung surfactant formulation. Also, the equilibrium spreading pressure was similar. DPPC-1-palmitoyl-2-oleoyl-sn-glycero-3-phospho-1'-rac-glycerol (POPG) had the greatest similarities with Alveofact in the hysteresis areas. The kinetic constants of the relaxation experiments during desorption showed that the PCPG model (at 30 mN/m) had almost identical diffusion and dissolution values as Alveofact. As a proof of concept, the interaction of the models with PLGA nanoparticles showed promising results in all experiments for all the three surfactant models. The results show that the choice of components in a model play a crucial role in obtaining reproducible results. The selected models can be used for further studies as synthetic in vitro lung models.
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Affiliation(s)
- Julia J Schüer
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany
| | - Alexej Arndt
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany
| | - Christian Wölk
- Institute of Pharmacy, Martin Luther University, Wolfgang-Langenbeck-Straße 4, 06210 Halle (Saale), Germany
- Institute of Pharmacy, Pharmaceutical Technology, Faculty of Medicine, Leipzig University, 04317 Leipzig, Germany
| | - Shashank R Pinnapireddy
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany
| | - Udo Bakowsky
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany
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17
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Chakraborty A, Hertel A, Ditmars H, Dhar P. Impact of Engineered Carbon Nanodiamonds on the Collapse Mechanism of Model Lung Surfactant Monolayers at the Air-Water Interface. Molecules 2020; 25:E714. [PMID: 32046011 PMCID: PMC7037128 DOI: 10.3390/molecules25030714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 01/22/2020] [Accepted: 02/01/2020] [Indexed: 11/20/2022] Open
Abstract
Understanding interactions between inhaled nanoparticles and lung surfactants (LS) present at the air-water interface in the lung, is critical to assessing the toxicity of these nanoparticles. Specifically, in this work, we assess the impact of engineered carbon nanoparticles (ECN) on the ability of healthy LS to undergo reversible collapse, which is essential for proper functioning of LS. Using a Langmuir trough, multiple compression-expansion cycles are performed to assess changes in the surface pressure vs. area isotherms with time and continuous cyclic compression-expansion. Further, theoretical analysis of the isotherms is used to calculate the ability of these lipid systems to retain material during monolayer collapse, due to interactions with ECNs. These results are complemented with fluorescence images of alterations in collapse mechanisms in these monolayer films. Four different model phospholipid systems, that mimic the major compositions of LS, are used in this study. Together, our results show that the ECN does not impact the mechanism of collapse. However, the ability to retain material at the interface during monolayer collapse, as well as re-incorporation of material after a compression-expansion cycle is altered to varying extent by ECNs and depends on the composition of the lipid mixtures.
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Affiliation(s)
| | | | | | - Prajnaparamita Dhar
- Department of Chemical and Petroleum Engineering, The University of Kansas, Lawrence, KS 66045, USA; (A.C.); (A.H.); (H.D.)
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18
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Lolicato F, Joly L, Martinez-Seara H, Fragneto G, Scoppola E, Baldelli Bombelli F, Vattulainen I, Akola J, Maccarini M. The Role of Temperature and Lipid Charge on Intake/Uptake of Cationic Gold Nanoparticles into Lipid Bilayers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1805046. [PMID: 31012268 DOI: 10.1002/smll.201805046] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 03/13/2019] [Indexed: 05/23/2023]
Abstract
Understanding the molecular mechanisms governing nanoparticle-membrane interactions is of prime importance for drug delivery and biomedical applications. Neutron reflectometry (NR) experiments are combined with atomistic and coarse-grained molecular dynamics (MD) simulations to study the interaction between cationic gold nanoparticles (AuNPs) and model lipid membranes composed of a mixture of zwitterionic di-stearoyl-phosphatidylcholine (DSPC) and anionic di-stearoyl-phosphatidylglycerol (DSPG). MD simulations show that the interaction between AuNPs and a pure DSPC lipid bilayer is modulated by a free energy barrier. This can be overcome by increasing temperature, which promotes an irreversible AuNP incorporation into the lipid bilayer. NR experiments confirm the encapsulation of the AuNPs within the lipid bilayer at temperatures around 55 °C. In contrast, the AuNP adsorption is weak and impaired by heating for a DSPC-DSPG (3:1) lipid bilayer. These results demonstrate that both the lipid charge and the temperature play pivotal roles in AuNP-membrane interactions. Furthermore, NR experiments indicate that the (negative) DSPG lipids are associated with lipid extraction upon AuNP adsorption, which is confirmed by coarse-grained MD simulations as a lipid-crawling effect driving further AuNP aggregation. Overall, the obtained detailed molecular view of the interaction mechanisms sheds light on AuNP incorporation and membrane destabilization.
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Affiliation(s)
- Fabio Lolicato
- Computational Physics Laboratory, Tampere University, P.O. Box 692, FI-33014, Tampere, Finland
- Department of Physics, University of Helsinki, P.O. Box 64, FI-00014, Helsinki, Finland
| | - Loic Joly
- Laboratory of Supramolecular and BioNano Materials, Department of Chemistry, Materials and Chemical Engineering, Politecnico di Milano, via Mancinelli 7, 20131, Milano, Italy
- Institut Laue-Langevin, 71 Avenue des Martyrs, 38042, Grenoble, France
| | - Hector Martinez-Seara
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 16610, Prague 6, Czech Republic
| | - Giovanna Fragneto
- Institut Laue-Langevin, 71 Avenue des Martyrs, 38042, Grenoble, France
| | - Ernesto Scoppola
- Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Francesca Baldelli Bombelli
- Laboratory of Supramolecular and BioNano Materials, Department of Chemistry, Materials and Chemical Engineering, Politecnico di Milano, via Mancinelli 7, 20131, Milano, Italy
| | - Ilpo Vattulainen
- Computational Physics Laboratory, Tampere University, P.O. Box 692, FI-33014, Tampere, Finland
- Department of Physics, University of Helsinki, P.O. Box 64, FI-00014, Helsinki, Finland
- MEMPHYS-Center for Biomembrane Physics
| | - Jaakko Akola
- Department of Physics, Norwegian University of Science and Technology, NO-7491, Trondheim, Norway
| | - Marco Maccarini
- Laboratoire TIMC-IMAG, Université Grenoble Alpes, Domaine de la Merci, 38706, La Tronche Cedex, France
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19
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Tian F, Lin X, Valle RP, Zuo YY, Gu N. Poly(amidoamine) Dendrimer as a Respiratory Nanocarrier: Insights from Experiments and Molecular Dynamics Simulations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:5364-5371. [PMID: 30888182 DOI: 10.1021/acs.langmuir.9b00434] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Pulmonary drug delivery is superior to the systemic administration in treating lung diseases. An optimal respiratory nanocarrier should be able to efficiently and safely cross the pulmonary surfactant film, which serves as the first biological barrier for respiratory delivery and plays paramount roles in maintaining the proper mechanics of breathing. In this work, we focused on the interactions between poly(amidoamine) (PAMAM) dendrimers and a model pulmonary surfactant. With combined Langmuir monolayer experiments and coarse-grained molecular dynamics simulations, we studied the effect of environmental temperature, size, and surface property of PAMAM dendrimers (G3-OH, G3-NH2, G5-OH, and G5-NH2) on the dipalmitoylphosphatidylcholine (DPPC) monolayer. Our simulations indicated that the environmental temperature could significantly affect the influence of PAMAM dendrimers on the DPPC monolayer. Therefore, results obtained at room temperature cannot be directly applied to elucidate interactions at body temperature. Simulations at body temperature found that all tested PAMAM dendrimers can easily penetrate the lipid monolayer during the monolayer expansion process (mimicking "inhalation"), and the cationic PAMAM dendrimers (-NH2) show promising penetration ability during the monolayer compression process (mimicking "expiration"). Larger PAMAM dendrimers (G5) adsorbed onto the lipid monolayer tend to induce structural collapse and inhibit normal phase transitions of the lipid monolayer. These adverse effects could be mitigated in the subsequent expansion-compression cycle. These findings suggest that the PAMAM dendrimer may be used as a potential respiratory drug nanocarrier.
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Affiliation(s)
- Fujia Tian
- Beijing Advanced Innovation Center for Biomedical Engineering , Beihang University , Beijing 100083 , China
| | - Xubo Lin
- Beijing Advanced Innovation Center for Biomedical Engineering , Beihang University , Beijing 100083 , China
- Key Laboratory of Ministry of Education for Biomechanics and Mechanobiology, School of Biological Science and Medical Engineering , Beihang University , Beijing 100083 , China
- State Key Laboratory of Bioelectronics and Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering , Southeast University , Nanjing 210096 , China
| | - Russell P Valle
- Department of Mechanical Engineering , University of Hawaii at Manoa , Honolulu , Hawaii 96822 , United States
| | - Yi Y Zuo
- Department of Mechanical Engineering , University of Hawaii at Manoa , Honolulu , Hawaii 96822 , United States
| | - Ning Gu
- State Key Laboratory of Bioelectronics and Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering , Southeast University , Nanjing 210096 , China
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20
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Guzmán E, Santini E. Lung surfactant-particles at fluid interfaces for toxicity assessments. Curr Opin Colloid Interface Sci 2019. [DOI: 10.1016/j.cocis.2019.01.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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21
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Pfeiffer T, De Nicola A, Montis C, Carlà F, van der Vegt NFA, Berti D, Milano G. Nanoparticles at Biomimetic Interfaces: Combined Experimental and Simulation Study on Charged Gold Nanoparticles/Lipid Bilayer Interfaces. J Phys Chem Lett 2019; 10:129-137. [PMID: 30563321 DOI: 10.1021/acs.jpclett.8b03399] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The poor understanding of the interaction of nanomaterials with biologically relevant interfaces is recognized as one of the major issues currently limiting the development of nanomedicine. The central purpose of this study is to compare experimental (confocal microscopy, fluorescence correlation spectroscopy, X-ray reflectivity) and computational (molecular dynamics simulations) results to thoroughly describe the interaction of cationic gold nanoparticles (AuNPs) with mixed zwitterionic/anionic lipid membranes. The adhesion of AuNPs to the lipid membrane is investigated on different length scales from a structural and dynamical point of view; with this approach, a series of complex phenomena, spanning from lipid extraction, localized membrane disruption, lateral phase separation, and slaved diffusion, are characterized and interpreted from a molecular level to macroscopic observations.
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Affiliation(s)
- Tobias Pfeiffer
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie , Technische Universität Darmstadt , Alarich-Weiss-Straße 10 , Darmstadt 64289 , Germany
| | - Antonio De Nicola
- Department of Organic Materials Science , Yamagata University , 4-3-16 Jonan Yonezawa , Yamagata-ken 992-8510 , Japan
| | - Costanza Montis
- Department of Chemistry "Ugo Schiff" and CSGI , University of Florence , via della Lastruccia 3 , 50019 Sesto Fiorentino, Florence , Italy
| | - Francesco Carlà
- European Synchrotron Radiation Facility , CS 40220 , Grenoble Cedex 9, France
| | - Nico F A van der Vegt
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie , Technische Universität Darmstadt , Alarich-Weiss-Straße 10 , Darmstadt 64289 , Germany
| | - Debora Berti
- Department of Chemistry "Ugo Schiff" and CSGI , University of Florence , via della Lastruccia 3 , 50019 Sesto Fiorentino, Florence , Italy
| | - Giuseppe Milano
- Department of Organic Materials Science , Yamagata University , 4-3-16 Jonan Yonezawa , Yamagata-ken 992-8510 , Japan
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22
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Melby ES, Allen C, Foreman-Ortiz IU, Caudill ER, Kuech TR, Vartanian AM, Zhang X, Murphy CJ, Hernandez R, Pedersen JA. Peripheral Membrane Proteins Facilitate Nanoparticle Binding at Lipid Bilayer Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10793-10805. [PMID: 30102857 DOI: 10.1021/acs.langmuir.8b02060] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Molecular understanding of the impact of nanomaterials on cell membranes is critical for the prediction of effects that span environmental exposures to nanoenabled therapies. Experimental and computational studies employing phospholipid bilayers as model systems for membranes have yielded important insights but lack the biomolecular complexity of actual membranes. Here, we increase model membrane complexity by incorporating the peripheral membrane protein cytochrome c and studying the interactions of the resulting membrane systems with two types of anionic nanoparticles. Experimental and computational studies reveal that the extent of cytochrome c binding to supported lipid bilayers depends on anionic phospholipid number density and headgroup chemistry. Gold nanoparticles functionalized with short, anionic ligands or wrapped with an anionic polymer do not interact with silica-supported bilayers composed solely of phospholipids. Strikingly, when cytochrome c was bound to these bilayers, nanoparticles functionalized with short anionic ligands attached to model biomembranes in amounts proportional to the number of bound cytochrome c molecules. In contrast, anionic polymer-wrapped gold nanoparticles appeared to remove cytochrome c from supported lipid bilayers in a manner inversely proportional to the strength of cytochrome c binding to the bilayer; this reflects the removal of a weakly bound pool of cytochrome c, as suggested by molecular dynamics simulations. These results highlight the importance of the surface chemistry of both the nanoparticle and the membrane in predicting nano-bio interactions.
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Affiliation(s)
- Eric S Melby
- Environmental Chemistry and Technology Program , University of Wisconsin-Madison , 1525 Observatory Drive , Madison , Wisconsin 53706 , United States
- Environmental and Molecular Sciences Laboratory , Pacific Northwest National Laboratory , 3335 Innovation Boulevard , Richland , Washington 99354 , United States
| | - Caley Allen
- Department of Chemistry , Johns Hopkins University , Baltimore , Maryland 21218 , United States
| | - Isabel U Foreman-Ortiz
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Emily R Caudill
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Thomas R Kuech
- Environmental Chemistry and Technology Program , University of Wisconsin-Madison , 1525 Observatory Drive , Madison , Wisconsin 53706 , United States
| | - Ariane M Vartanian
- Department of Chemistry , University of Illinois at Urbana-Champaign , 600 South Mathews Avenue , Urbana , Illinois 61801 , United States
| | - Xi Zhang
- Department of Chemistry , University of Illinois at Urbana-Champaign , 600 South Mathews Avenue , Urbana , Illinois 61801 , United States
| | - Catherine J Murphy
- Department of Chemistry , University of Illinois at Urbana-Champaign , 600 South Mathews Avenue , Urbana , Illinois 61801 , United States
| | - Rigoberto Hernandez
- Department of Chemistry , Johns Hopkins University , Baltimore , Maryland 21218 , United States
| | - Joel A Pedersen
- Environmental Chemistry and Technology Program , University of Wisconsin-Madison , 1525 Observatory Drive , Madison , Wisconsin 53706 , United States
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
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23
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Sosnowski TR. Particles on the lung surface - physicochemical and hydrodynamic effects. Curr Opin Colloid Interface Sci 2018. [DOI: 10.1016/j.cocis.2017.12.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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24
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Lipopolysaccharides and peptidoglycans modulating the interaction of Au naparticles with cell membranes models at the air-water interface. Biophys Chem 2018; 238:22-29. [DOI: 10.1016/j.bpc.2018.04.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 04/18/2018] [Accepted: 04/24/2018] [Indexed: 12/20/2022]
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25
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Chen YT, Su HS, Hung CH, Yang PW, Hu Y, Lin TL, Lee MT, Jeng US. X-ray Reflectivity Studies on the Mixed Langmuir-Blodgett Monolayers of Thiol-Capped Gold Nanoparticles, Dipalmitoylphosphatidylcholine, and Sodium Dodecyl Sulfate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10886-10897. [PMID: 28938799 DOI: 10.1021/acs.langmuir.7b01559] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Langmuir-Blodgett monolayers of thiolated gold nanoparticles mixed with dipalmitoylphosphatidylcholine/sodium dodecyl sulfate (DPPC/SDS) were investigated by combining the X-ray reflectivity, grazing-incident scattering, and TEM analyses to reveal the in-depth and in-plane organization and the 2D morphology of such mixed monolayers. It was found that the addition of a charged single-tail surfactant to the thiolated Au nanoparticle monolayer helps to stabilize the Au nanoparticle monolayer and to strengthen the mechanical property of the mixed monolayer film. For mixing with lipids, it was found that the thiolated gold nanoparticles could be pushed on top of the lipid monolayer when the mixed monolayer is compressed. At a typical comparable total surface area ratio of gold nanoparticle to lipid, the thiolated gold nanoparticles could form a uniform domain on top of the DPPC monolayer. When there are more thiolated gold nanoparticles than that could be supported by the lipid monolayer, domain overlapping could occur to form bilayer gold nanoparticle domains at some regions. At low total surface area ratio of thiolated gold nanoparticle to lipid, the thiolated gold nanoparticles tend to form a connected threadlike aggregation structure. Evidently, the morphology of the thiolated gold nanoparticle monolayer is highly depending on the total surface area ratio of the thiolated gold nanoparticle to lipid. SDS is found to have a dispersion power capable of dispersing the originally uniform Au-8C nanoparticle domain of the mixed Au-8C/DPPC monolayer into a foamlike structure for the mixed Au-8C/SDS/DPPC monolayer. It is evident that not only the concentration ratio but also the size and shape of the template formed by the amphiphilic molecules and their interaction with the thiolated gold nanoparticles can all have great effects on the organizational structure as well as morphology of the thiolated gold nanoparticle monolayer.
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Affiliation(s)
- Yi-Tang Chen
- Department of Engineering and System Science, National Tsing Hua University , Hsinchu 30013, Taiwan, ROC
| | - Han-Shiou Su
- Department of Engineering and System Science, National Tsing Hua University , Hsinchu 30013, Taiwan, ROC
| | - Chin-Hua Hung
- Department of Engineering and System Science, National Tsing Hua University , Hsinchu 30013, Taiwan, ROC
| | - Po-Wei Yang
- Department of Engineering and System Science, National Tsing Hua University , Hsinchu 30013, Taiwan, ROC
| | - Yuan Hu
- Department of Engineering and System Science, National Tsing Hua University , Hsinchu 30013, Taiwan, ROC
| | - Tsang-Lang Lin
- Department of Engineering and System Science, National Tsing Hua University , Hsinchu 30013, Taiwan, ROC
| | - Ming-Tao Lee
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan, ROC
| | - U-Ser Jeng
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan, ROC
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26
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Guzmán E, Santini E, Ferrari M, Liggieri L, Ravera F. Effect of the Incorporation of Nanosized Titanium Dioxide on the Interfacial Properties of 1,2-Dipalmitoyl-sn-glycerol-3-phosphocholine Langmuir Monolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10715-10725. [PMID: 28926262 DOI: 10.1021/acs.langmuir.7b02484] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The effect of the incorporation of hydrophilic titanium dioxide (TiO2) nanoparticles on the interfacial properties of Langmuir monolayers of 1,2-dipalmitoyl-sn-glycerol-3-phosphocholine (DPPC) has been evaluated combining interfacial thermodynamic studies, dilatational rheology, and Brewster angle microscopy (BAM). The results show that the TiO2 nanoparticles are able to penetrate DPPC layers, modifying the organization of the molecules and, consequently, the phase behavior and viscoelastic properties of the systems. Measurements of dilational viscoelasticity against the frequency have been performed, using the oscillatory barrier method, at different values of the surface pressure corresponding to different degrees of compression of the monolayer. The presence of TiO2 nanoparticles also affects the dynamic response of the monolayer modifying both the quasi-equilibrium dilatational elasticity and the high frequency limit of the viscoelastic modulus. The principal aim of this work is to understand the fundamental physicochemical bases related to the incorporation of specific nanoparticles of technological interest into the interfacial layer with biological relevance such as phospholipid layers. This can provide information on potential adverse effects of nanoparticles for health and the environment.
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Affiliation(s)
- Eduardo Guzmán
- Istituto di Chimica della Materia Condensata e di Tecnologia per l'Energia, UOS Genova-Consiglio Nazionale delle Ricerche (ICMATE-CNR) , Via De Marini 6, 16149 Genoa, Italy
- Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid , Ciudad Universitaria s/n, 28040 Madrid, Spain
- Instituto Pluridisciplinar, Universidad Complutense de Madrid, Paseo Juan XIII, n.1, 28040 Madrid, Spain
| | - Eva Santini
- Istituto di Chimica della Materia Condensata e di Tecnologia per l'Energia, UOS Genova-Consiglio Nazionale delle Ricerche (ICMATE-CNR) , Via De Marini 6, 16149 Genoa, Italy
| | - Michele Ferrari
- Istituto di Chimica della Materia Condensata e di Tecnologia per l'Energia, UOS Genova-Consiglio Nazionale delle Ricerche (ICMATE-CNR) , Via De Marini 6, 16149 Genoa, Italy
| | - Libero Liggieri
- Istituto di Chimica della Materia Condensata e di Tecnologia per l'Energia, UOS Genova-Consiglio Nazionale delle Ricerche (ICMATE-CNR) , Via De Marini 6, 16149 Genoa, Italy
| | - Francesca Ravera
- Istituto di Chimica della Materia Condensata e di Tecnologia per l'Energia, UOS Genova-Consiglio Nazionale delle Ricerche (ICMATE-CNR) , Via De Marini 6, 16149 Genoa, Italy
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27
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MacCormack TJ, Rundle AM, Malek M, Raveendran A, Meli MV. Gold nanoparticles partition to and increase the activity of glucose-6-phosphatase in a synthetic phospholipid membrane system. PLoS One 2017; 12:e0183274. [PMID: 28817664 PMCID: PMC5560555 DOI: 10.1371/journal.pone.0183274] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 08/01/2017] [Indexed: 01/27/2023] Open
Abstract
Engineered nanomaterials can alter the structure and/or function of biological membranes and membrane proteins but the underlying mechanisms remain unclear. We addressed this using a Langmuir phospholipid monolayer containing an active transmembrane protein, glucose-6-phosphatase (G6Pase). Gold nanoparticles (nAu) with varying ligand shell composition and hydrophobicity were synthesized, and their partitioning in the membrane and effects on protein activity characterized. nAu incorporation did not alter the macroscopic properties of the membrane. Atomic force microscopy showed that when co-spread with other components prior to membrane compression, nAu preferentially interacted with G6Pase and each other in a functional group-dependent manner. Under these conditions, all nAu formulations reduced G6Pase aggregation in the membrane, enhancing catalytic activity 5-6 fold. When injected into the subphase beneath pre-compressed monolayers, nAu did not affect G6Pase activity over 60 minutes, implying they were unable to interact with the protein under these conditions. A small but significant quenching of tryptophan fluorescence showed that nAu interacted with G6Pase in aqueous suspension. nAu also significantly reduced the hydrodynamic diameter of G6Pase in aqueous suspension and promoted catalytic activity, likely via a similar mechanism to that observed in co-spread monolayers. Overall, our results show that nAu can incorporate into membranes and associate preferentially with membrane proteins under certain conditions and that partitioning is dependent upon ligand shell chemistry and composition. Once incorporated, nAu can alter the distribution of membrane proteins and indirectly affect their function by improving active site accessibility, or potentially by changing their native structure and distribution in the membrane.
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Affiliation(s)
- Tyson J. MacCormack
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB, Canada
- * E-mail: (TJM); (MVM)
| | - Amanda M. Rundle
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB, Canada
| | - Michael Malek
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB, Canada
| | - Abhilash Raveendran
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB, Canada
| | - Maria-Victoria Meli
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB, Canada
- * E-mail: (TJM); (MVM)
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28
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Applications of Brewster angle microscopy from biological materials to biological systems. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:1749-1766. [PMID: 28655618 DOI: 10.1016/j.bbamem.2017.06.016] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 06/22/2017] [Accepted: 06/23/2017] [Indexed: 12/22/2022]
Abstract
Brewster angle microscopy (BAM) is a powerful technique that allows for real-time visualization of Langmuir monolayers. The lateral organization of these films can be investigated, including phase separation and the formation of domains, which may be of different sizes and shapes depending on the properties of the monolayer. Different molecules or small changes within a molecule such as the molecule's length or presence of a double bond can alter the monolayer's lateral organization that is usually undetected using surface pressure-area isotherms. The effect of such changes can be clearly observed using BAM in real-time, under full hydration, which is an experimental advantage in many cases. While previous BAM reviews focused more on selected compounds or compared the impact of structural variations on the lateral domain formation, this review provided a broader overview of BAM application using biological materials and systems including the visualization of amphiphilic molecules, proteins, drugs, extracts, DNA, and nanoparticles at the air-water interface.
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29
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Sosnowski TR, Kubski P, Wojciechowski K. New experimental model of pulmonary surfactant for biophysical studies. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2016.06.044] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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30
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Beck-Broichsitter M. Biophysical Activity of Impaired Lung Surfactant upon Exposure to Polymer Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:10422-10429. [PMID: 27641633 DOI: 10.1021/acs.langmuir.6b02893] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Colloidal drug carriers could improve the therapy of numerous airway diseases. However, it remains unclear to what extent nanoscale particulate matter affects the biophysical function of the essential surface-active lining layer of the lungs, especially under predisposed conditions of airway diseases. Accordingly, the current study investigated the impact of defined polymer nanoparticles on impaired lung surfactants. Admixtures of plasma proteins (albumin and fibrinogen) to Curosurf led to a controllable decrease in surface activity (i.e., adsorption and minimal surface tension of >25 and >5 mN/m, respectively), which served as models for dysfunctional lung surfactants. Next, Curosurf preincubated with plasma proteins was challenged with negatively- and positively charged poly(lactide) nanoparticles. Negatively charged nanoparticles significantly perturbed the biophysical function of impaired Curosurf in a dose-dependent manner, most-likely due to a binding of essential surfactant components. By contrast, addition of positively charged nanoparticles led to no further loss of surface activity, but a remarkable depletion of plasma protein content. Once adsorbed to the surface of polymer nanoparticles, plasma proteins were hindered to displace relevant surfactant components from the air/liquid interface. Overall, the current study indicated that, depending on their physicochemical properties, colloidal drug carriers could compromise the biophysical function of impaired lung surfactants. Notably, a positive surface charge represents a parameter for the rationale design of polymer nanomedicines causing negligible adverse events on an impaired surface-active lining layer in the lungs.
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Affiliation(s)
- Moritz Beck-Broichsitter
- Medical Clinic II, Department of Internal Medicine, Justus-Liebig-Universität , 35392 Giessen, Germany
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31
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Jabłonowska E, Nazaruk E, Matyszewska D, Speziale C, Mezzenga R, Landau EM, Bilewicz R. Interactions of Lipidic Cubic Phase Nanoparticles with Lipid Membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:9640-8. [PMID: 27550742 DOI: 10.1021/acs.langmuir.6b01746] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The interactions of liquid-crystalline monoolein (GMO) cubic phase nanoparticles with various model lipid membranes spread at the air-solution interface by the Langmuir technique were investigated. Cubosomes have attracted attention as potential biocompatible drug delivery systems, and thus understanding their mode of interaction with membranes is of special interest. Cubosomes spreading at the air-water interface as well as interactions with a monolayer of 1, 2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) compressed to different surface pressures were studied by monitoring surface pressure-time dependencies at constant area. Progressive incorporation of the nanoparticles was shown to lead to mixed monolayer formation. The concentration of cubosomes influenced the mechanism of incorporation, as well as the fluidity and permeability of the resulting lipid membranes. Brewster angle microscopy images reflected the dependence of the monolayer structure on the cubosomes presence in the subphase. A parameter Csat was introduced to indicate the point of saturation of the lipid membrane with the cubosomal material. This parameter was found to depend on the surface pressure showing that the cubosomes disintegrate in prolonged contact with the membrane, filling available voids in the lipid membrane. At highest surface pressures when the layer is most compact, the penetration of cubosomal material is not possible and only some exchange with the membrane lipid becomes the route of including GMO into the layer. Finally, comparative studies of the interactions between lipids with various headgroup charges with cubosomes suggest that at high surface pressure an exchange of lipid component between the monolayer and the cubosome in its intact form may occur.
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Affiliation(s)
| | - Ewa Nazaruk
- Faculty of Chemistry, University of Warsaw , Pasteura 1, 02-093 Warsaw, Poland
| | - Dorota Matyszewska
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw , Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Chiara Speziale
- Department of Health Sciences & Technology, ETH Zurich , 8092 Zurich, Switzerland
| | - Raffaele Mezzenga
- Department of Health Sciences & Technology, ETH Zurich , 8092 Zurich, Switzerland
| | - Ehud M Landau
- Department of Chemistry, University of Zurich , Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Renata Bilewicz
- Faculty of Chemistry, University of Warsaw , Pasteura 1, 02-093 Warsaw, Poland
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32
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You SS, Heffern CTR, Dai Y, Meron M, Henderson JM, Bu W, Xie W, Lee KYC, Lin B. Liquid Surface X-ray Studies of Gold Nanoparticle–Phospholipid Films at the Air/Water Interface. J Phys Chem B 2016; 120:9132-41. [DOI: 10.1021/acs.jpcb.6b03734] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Siheng Sean You
- James
Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
| | - Charles T. R. Heffern
- James
Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
- Department
of Chemistry, The University of Chicago, Chicago, Illinois 60637, United States
| | - Yeling Dai
- Department
of Physics, The University of California—San Diego, La Jolla, California 92093, United States
| | - Mati Meron
- Center
for Advanced Radiation Sources, The University of Chicago, Chicago, Illinois 60637, United States
| | - J. Michael Henderson
- James
Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
- Department
of Chemistry, The University of Chicago, Chicago, Illinois 60637, United States
| | - Wei Bu
- Center
for Advanced Radiation Sources, The University of Chicago, Chicago, Illinois 60637, United States
| | - Wenyi Xie
- James
Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
- Department
of Chemical Engineering, City College of New York, New York City, New York 10031, United States
| | - Ka Yee C. Lee
- James
Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
- Department
of Chemistry, The University of Chicago, Chicago, Illinois 60637, United States
- Institute
for Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, United States
| | - Binhua Lin
- James
Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
- Center
for Advanced Radiation Sources, The University of Chicago, Chicago, Illinois 60637, United States
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33
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Kondej D, Sosnowski TR. Effect of clay nanoparticles on model lung surfactant: a potential marker of hazard from nanoaerosol inhalation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:4660-4669. [PMID: 26527341 PMCID: PMC4766208 DOI: 10.1007/s11356-015-5610-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 10/13/2015] [Indexed: 05/30/2023]
Abstract
This work investigates influence of different aluminosillicate nanoparticles (NPs) which are found in air in selected workplaces on the properties of the phospholipid (DPPC) monolayer at air-saline interface considered as ex vivo model of the lung surfactant (LS). The measurements were done under physiological-like conditions (deformable liquid interface at 37 °C) for NP concentrations matching the calculated lung doses after exposure in the working environment. Measured surface pressure-area (π-A) isotherms and compressibility curves demonstrated NP-induced changes in the structure and mechanical properties of the lipid monolayer. It was shown that hydrophilic nanomaterials (halloysite and bentonite) induced concentration-dependent impairment of DPPC's ability of attaining high surface pressures on interfacial compression, suggesting a possibility of reduction of physiological function of natural LS. Hydrophobic montmorillonites affected DPPC monolayer in the opposite way; however, they significantly changed the mechanical properties of the air-liquid interface during compression. The results support the hypothesis of possible reduction or even degradation of the natural function of the lung surfactant induced by particle-phospholipid interactions after inhalation of nanoclays. Presented data do not only supplement the earlier results obtained with another LS model (animal-derived surfactant in oscillating bubble experiments) but also offer an explanation of physicochemical mechanisms responsible for detrimental effects which arise after deposition of inhaled nanomaterials on the surface of the respiratory system.
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Affiliation(s)
- Dorota Kondej
- Central Institute for Labour Protection-National Research Institute, Czerniakowska 16, 00-701, Warsaw, Poland.
| | - Tomasz R Sosnowski
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645, Warsaw, Poland.
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34
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Effect of silica nanoparticles on the interfacial properties of a canonical lipid mixture. Colloids Surf B Biointerfaces 2015; 136:971-80. [DOI: 10.1016/j.colsurfb.2015.11.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 10/19/2015] [Accepted: 11/02/2015] [Indexed: 12/23/2022]
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35
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Botelho DJ, Leo BF, Massa CB, Sarkar S, Tetley TD, Chung KF, Chen S, Ryan MP, Porter AE, Zhang J, Schwander SK, Gow AJ. Low-dose AgNPs reduce lung mechanical function and innate immune defense in the absence of cellular toxicity. Nanotoxicology 2015; 10:118-27. [PMID: 26152688 DOI: 10.3109/17435390.2015.1038330] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Multiple studies have examined the direct cellular toxicity of silver nanoparticles (AgNPs). However, the lung is a complex biological system with multiple cell types and a lipid-rich surface fluid; therefore, organ level responses may not depend on direct cellular toxicity. We hypothesized that interaction with the lung lining is a critical determinant of organ level responses. Here, we have examined the effects of low dose intratracheal instillation of AgNPs (0.05 μg/g body weight) 20 and 110 nm diameter in size, and functionalized with citrate or polyvinylpyrrolidone. Both size and functionalization were significant factors in particle aggregation and lipid interaction in vitro. One day post-intratracheal instillation lung function was assessed, and bronchoalveolar lavage (BAL) and lung tissue collected. There were no signs of overt inflammation. There was no change in surfactant protein-B content in the BAL but there was loss of surfactant protein-D with polyvinylpyrrolidone (PVP)-stabilized particles. Mechanical impedance data demonstrated a significant increase in pulmonary elastance as compared to control, greatest with 110 nm PVP-stabilized particles. Seven days post-instillation of PVP-stabilized particles increased BAL cell counts, and reduced lung function was observed. These changes resolved by 21 days. Hence, AgNP-mediated alterations in the lung lining and mechanical function resolve by 21 days. Larger particles and PVP stabilization produce the largest disruptions. These studies demonstrate that low dose AgNPs elicit deficits in both mechanical and innate immune defense function, suggesting that organ level toxicity should be considered.
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Affiliation(s)
- Danielle J Botelho
- a Department of Pharmacology & Toxicology , Rutgers University , Piscataway , NJ , USA
| | - Bey Fen Leo
- b Department of Materials and London Centre for Nanotechnology , Imperial College London , London , UK .,c Department of Mechanical Engineering , University of Malaya , Kuala Lumpur , Malaysia
| | - Christopher B Massa
- a Department of Pharmacology & Toxicology , Rutgers University , Piscataway , NJ , USA
| | - Srijata Sarkar
- d School of Public Health, Rutgers University Piscataway , NJ , USA
| | - Terry D Tetley
- e National Heart and Lung Institute, Imperial College London , London , UK , and
| | - Kian Fan Chung
- e National Heart and Lung Institute, Imperial College London , London , UK , and
| | - Shu Chen
- b Department of Materials and London Centre for Nanotechnology , Imperial College London , London , UK
| | - Mary P Ryan
- b Department of Materials and London Centre for Nanotechnology , Imperial College London , London , UK
| | - Alexandra E Porter
- b Department of Materials and London Centre for Nanotechnology , Imperial College London , London , UK
| | - Junfeng Zhang
- f Department of Preventive Medicine , University of Southern California (currently Duke University) , Durham , NC , USA
| | | | - Andrew J Gow
- a Department of Pharmacology & Toxicology , Rutgers University , Piscataway , NJ , USA
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36
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Kodama AT, Kuo CC, Boatwright T, Dennin M. Investigating the effect of particle size on pulmonary surfactant phase behavior. Biophys J 2015; 107:1573-81. [PMID: 25296309 DOI: 10.1016/j.bpj.2014.08.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 07/17/2014] [Accepted: 08/06/2014] [Indexed: 12/14/2022] Open
Abstract
We study the impact of the addition of particles of a range of sizes on the phase transition behavior of lung surfactant under compression. Charged particles ranging from micro- to nanoscale are deposited on lung surfactant films in a Langmuir trough. Surface area versus surface pressure isotherms and fluorescent microscope observations are utilized to determine changes in the phase transition behavior. We find that the deposition of particles close to 20 nm in diameter significantly impacts the coexistence of the liquid-condensed phase and liquid-expanded phase. This includes morphological changes of the liquid-condensed domains and the elimination of the squeeze-out phase in isotherms. Finally, a drastic increase of the domain fraction of the liquid-condensed phase can be observed for the deposition of 20-nm particles. As the particle size is increased, we observe a return to normal phase behavior. The net result is the observation of a critical particle size that may impact the functionality of the lung surfactant during respiration.
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Affiliation(s)
- Akihisa T Kodama
- Department of Physics & Astronomy, University of California, Irvine, California
| | - Chin-Chang Kuo
- Department of Physics & Astronomy, University of California, Irvine, California
| | - Thomas Boatwright
- Department of Physics & Astronomy, University of California, Irvine, California
| | - Michael Dennin
- Department of Physics & Astronomy, University of California, Irvine, California.
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37
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Valle RP, Wu T, Zuo YY. Biophysical influence of airborne carbon nanomaterials on natural pulmonary surfactant. ACS NANO 2015; 9:5413-21. [PMID: 25929264 PMCID: PMC4856476 DOI: 10.1021/acsnano.5b01181] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Inhalation of nanoparticles (NP), including lightweight airborne carbonaceous nanomaterials (CNM), poses a direct and systemic health threat to those who handle them. Inhaled NP penetrate deep pulmonary structures in which they first interact with the pulmonary surfactant (PS) lining at the alveolar air-water interface. In spite of many research efforts, there is a gap of knowledge between in vitro biophysical study and in vivo inhalation toxicology since all existing biophysical models handle NP-PS interactions in the liquid phase. This technical limitation, inherent in current in vitro methodologies, makes it impossible to simulate how airborne NP deposit at the PS film and interact with it. Existing in vitro NP-PS studies using liquid-suspended particles have been shown to artificially inflate the no-observed adverse effect level of NP exposure when compared to in vivo inhalation studies and international occupational exposure limits (OELs). Here, we developed an in vitro methodology called the constrained drop surfactometer (CDS) to quantitatively study PS inhibition by airborne CNM. We show that airborne multiwalled carbon nanotubes and graphene nanoplatelets induce a concentration-dependent PS inhibition under physiologically relevant conditions. The CNM aerosol concentrations controlled in the CDS are comparable to those defined in international OELs. Development of the CDS has the potential to advance our understanding of how submicron airborne nanomaterials affect the PS lining of the lung.
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Affiliation(s)
- Russell P. Valle
- Department of Mechanical Engineering, University of Hawaii at Mnoa, Honolulu, Hawaii 96822, United States
| | - Tony Wu
- Department of Mechanical Engineering, University of Hawaii at Mnoa, Honolulu, Hawaii 96822, United States
| | - Yi Y. Zuo
- Department of Mechanical Engineering, University of Hawaii at Mnoa, Honolulu, Hawaii 96822, United States
- Department of Pediatrics, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii 96826, United States
- Address correspondence to
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38
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Chakraborty A, Mucci NJ, Tan ML, Steckley A, Zhang T, Forrest ML, Dhar P. Phospholipid composition modulates carbon nanodiamond-induced alterations in phospholipid domain formation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:5093-104. [PMID: 25876023 PMCID: PMC4702515 DOI: 10.1021/la504923j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The focus of this work is to elucidate how phospholipid composition can modulate lipid nanoparticle interactions in phospholipid monolayer systems. We report on alterations in lipid domain formation induced by anionically engineered carbon nanodiamonds (ECNs) as a function of lipid headgroup charge and alkyl chain saturation. Using surface pressure vs area isotherms, monolayer compressibility, and fluorescence microscopy, we found that anionic ECNs induced domain shape alterations in zwitterionic phosphatidylcholine lipids, irrespective of the lipid alkyl chain saturation, even when the surface pressure vs area isotherms did not show any significant changes. Bean-shaped structures characteristic of dipalmitoylphosphatidylcholine (DPPC) were converted to multilobed, fractal, or spiral domains as a result of exposure to ECNs, indicating that ECNs lower the line tension between domains in the case of zwitterionic lipids. For membrane systems containing anionic phospholipids, ECN-induced changes in domain packing were related to the electrostatic interactions between the anionic ECNs and the anionic lipid headgroups, even when zwitterionic lipids are present in excess. By comparing the measured size distributions with our recently developed theory derived by minimizing the free energy associated with the domain energy and mixing entropy, we found that the change in line tension induced by anionic ECNs is dominated by the charge in the condensed lipid domains. Atomic force microscopy images of the transferred anionic films confirm that the location of the anionic ECNs in the lipid monolayers is also modulated by the charge on the condensed lipid domains. Because biological membranes such as lung surfactants contain both saturated and unsaturated phospholipids with different lipid headgroup charges, our results suggest that when studying potential adverse effects of nanoparticles on biological systems the role of lipid compositions cannot be neglected.
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Affiliation(s)
- Aishik Chakraborty
- Department of Chemical and Petroleum Engineering, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Nicolas J. Mucci
- Department of Chemical and Petroleum Engineering, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Ming Li Tan
- Department of Chemical and Petroleum Engineering, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Ashleigh Steckley
- Department of Chemical and Petroleum Engineering, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Ti Zhang
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, Kansas 66045, United States
| | - M. Laird Forrest
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Prajnaparamita Dhar
- Department of Chemical and Petroleum Engineering, The University of Kansas, Lawrence, Kansas 66045, United States
- Corresponding Author:
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39
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Daear W, Lai P, Anikovskiy M, Prenner EJ. Differential Interactions of Gelatin Nanoparticles with the Major Lipids of Model Lung Surfactant: Changes in the Lateral Membrane Organization. J Phys Chem B 2015; 119:5356-66. [DOI: 10.1021/jp5122239] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Weiam Daear
- Department
of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Patrick Lai
- Department
of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Max Anikovskiy
- Department
of Chemistry, University of Calgary, Calgary, Alberta, Canada
| | - Elmar J. Prenner
- Department
of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
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40
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Farnoud AM, Fiegel J. Calf Lung Surfactant Recovers Surface Functionality After Exposure to Aerosols Containing Polymeric Particles. J Aerosol Med Pulm Drug Deliv 2015; 29:10-23. [PMID: 25671772 DOI: 10.1089/jamp.2014.1165] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Recent studies have shown that colloidal particles can disrupt the interfacial properties of lung surfactant and thus key functional abilities of lung surfactant. However, the mechanisms underlying the interactions between aerosols and surfactant films remain poorly understood, as our ability to expose films to particles via the aerosol route has been limited. The aim of this study was to develop a method to reproducibly apply aerosols with a quantifiable particle dose on lung surfactant films and investigate particle-induced changes to the interfacial properties of the surfactant under conditions that more closely mimic those in vivo. METHODS Films of DPPC and Infasurf® were exposed to aerosols containing polystyrene particles generated using a Dry Powder Insufflator™. The dose of particles deposited on surfactant films was determined via light absorbance. The interfacial properties of the surfactant were studied using a Langmuir-Wilhelmy balance during surfactant compression to film collapse and cycles of surface compression and expansion at a fast cycling rate within a small surface area range. RESULTS Exposure of surfactant films to aerosols led to reproducible dosing of particles on the films. In film collapse experiments, particle deposition led to slight changes in collapse surface pressure and surface area of both surfactants. However, longer interaction times between particles and Infasurf® films resulted in time-dependent inhibition of surfactant function. When limited to lung relevant surface pressures, particles reduced the maximum surface pressure that could be achieved. This inhibitory effect persisted for all compression-expansion cycles in DPPC, but normal surfactant behavior was restored in Infasurf® films after five cycles. CONCLUSIONS The observation that Infasurf® was able to quickly restore its function after exposure to aerosols under conditions that better mimicked those in vivo suggests that particle-induced surfactant inhibition is unlikely to occur in vivo due to an aerosol exposure.
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Affiliation(s)
- Amir M Farnoud
- 1 Department of Chemical and Biochemical Engineering, The University of Iowa , Iowa City, Iowa
| | - Jennifer Fiegel
- 1 Department of Chemical and Biochemical Engineering, The University of Iowa , Iowa City, Iowa.,2 Department of Pharmaceutical Sciences and Experimental Therapeutics, The University of Iowa , Iowa City, Iowa
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41
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Yue T, Wang X, Zhang X, Huang F. Molecular modeling of interaction between lipid monolayer and graphene nanosheets: implications for pulmonary nanotoxicity and pulmonary drug delivery. RSC Adv 2015. [DOI: 10.1039/c5ra04922a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Understanding how nanoparticles interact with the pulmonary surfactant monolayer (PSM) is of great importance for safe applications in biomedicine and for evaluation of both health and environment impacts.
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Affiliation(s)
- Tongtao Yue
- State Key Laboratory of Heavy Oil Processing
- Center for Bioengineering and Biotechnology
- China University of Petroleum (East China)
- Qingdao
- People's Republic of China
| | - Xiaojuan Wang
- State Key Laboratory of Heavy Oil Processing
- Center for Bioengineering and Biotechnology
- China University of Petroleum (East China)
- Qingdao
- People's Republic of China
| | - Xianren Zhang
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing
- People's Republic of China
| | - Fang Huang
- State Key Laboratory of Heavy Oil Processing
- Center for Bioengineering and Biotechnology
- China University of Petroleum (East China)
- Qingdao
- People's Republic of China
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42
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Lin X, Zuo YY, Gu N. Shape affects the interactions of nanoparticles with pulmonary surfactant. SCIENCE CHINA MATERIALS 2015; 58:28-37. [PMID: 28748123 PMCID: PMC5523932 DOI: 10.1007/s40843-014-0018-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The interactions with the pulmonary surfactant, the initial biological barrier of respiratory pathway, determine the potential therapeutic applications and toxicological effects of inhaled nanoparticles (NPs). Although much attention has been paid to optimize the physicochemical properties of NPs for improved delivery and targeting, shape effects of the inhaled NPs on their interactions with the pulmonary surfactant are still far from clear. Here, we studied the shape effects of NPs on their penetration abilities and structural disruptions to the dipalmitoyl-phosphatidylcholine (DPPC) monolayer (being model pulmonary surfactant film) using coarse-grained molecular dynamics simulations. It is found that during the inspiration process (i.e., surfactant film expansion), shape effects are negligible. However, during the expiration process (i.e., surfactant film compression), NPs of different shapes show various penetration abilities and degrees of structural disruptions to the DPPC monolayer. We found that rod-like NPs showed the highest degree of penetration and the smallest side-effects to the DPPC monolayer. Our results may provide a useful insight into the design of NPs for respiratory therapeutics.
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Affiliation(s)
- Xubo Lin
- State Key Laboratory of Bioelectronics and Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yi Y. Zuo
- Department of Mechanical Engineering, University of Hawaii at Manoa, Hawaii 96822, USA
| | - Ning Gu
- State Key Laboratory of Bioelectronics and Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China
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Guzmán E, Orsi D, Cristofolini L, Liggieri L, Ravera F. Two-dimensional DPPC based emulsion-like structures stabilized by silica nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:11504-11512. [PMID: 25210864 DOI: 10.1021/la502183t] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We studied the mechanical and structural properties of mixed surface layers composed by 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and silica nanoparticles (NPs). These layers are obtained by spreading a DPPC Langmuir monolayer on a colloidal silica dispersion. The transfer/incorporation of NPs into the DPPC monolayer, driven by electrostatic interactions, alters the molecular orientation, the mechanisms of domain formation, and consequently the phase behavior of the surface layer during compression. The investigation of these systems by means of complementary techniques (Langmuir trough, fluorescence microscopy, ellipsometry, and scanning electron microscopy (SEM)) shows that the incorporated NPs preferentially distribute along the liquid expanded phase of DPPC. The layer assumes the stable and homogeneous bidimensional structure of a two-dimensional (2D) analogue of a Pickering emulsion. In fact, the presence of particles provides a circular shape to the DPPC domains and stabilizes them against growth and coalescence during the monolayer compression.
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Affiliation(s)
- Eduardo Guzmán
- Consiglio Nazionale delle Ricerche-Istituto per l'Energetica e le Interfasi, U.O.S. Genova (CNR-IENI) , Via De Marini 6, 16149 Genova, Italy
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Ramkaran M, Badia A. Gel-to-Fluid Phase Transformations in Solid-Supported Phospholipid Bilayers Assembled by the Langmuir–Blodgett Technique: Effect of the Langmuir Monolayer Phase State and Molecular Density. J Phys Chem B 2014; 118:9708-21. [DOI: 10.1021/jp504092b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Mohini Ramkaran
- Department of Chemistry,
FRQNT Centre for Self-Assembled Chemical Structures, Université de Montréal, C.P. 6128 succursale Centre-ville, Montréal, QC H3C 3J7, Canada
| | - Antonella Badia
- Department of Chemistry,
FRQNT Centre for Self-Assembled Chemical Structures, Université de Montréal, C.P. 6128 succursale Centre-ville, Montréal, QC H3C 3J7, Canada
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Lin X, Bai T, Zuo YY, Gu N. Promote potential applications of nanoparticles as respiratory drug carrier: insights from molecular dynamics simulations. NANOSCALE 2014; 6:2759-2767. [PMID: 24464138 DOI: 10.1039/c3nr04163h] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Nanoparticles (NPs) show great promises in biomedical applications as the respiratory drug carrier system. Once reaching the alveolar region, NPs first interact with the pulmonary surfactant (PS) film, which serves as the first biological barrier and plays an important role in maintaining the normal respiratory mechanics. Therefore, understanding the interactions between NPs and PS can help promote the NP-based respiratory drug carrier systems. Using coarse-grained molecular dynamics simulations, we studied the effect of rigid spherical NPs with different hydrophobicity and sizes on a dipalmitoylphosphatidylcholine (DPPC) monolayer at the air-water interface. Four different NPs were considered, including hydrophilic and hydrophobic NPs, each with two diameters of 3 nm and 5 nm (the sizes are comparable to that of generation 3 and 5 PAMAM dendrimers, which have been widely used for nanoscale drug carrier systems). Our simulations showed that hydrophilic NPs can readily penetrate into the aqueous phase with little or no disturbance on the DPPC monolayer. However, hydrophobic NPs tend to induce large structural disruptions, thus inhibiting the normal phase transition of the DPPC monolayer upon film compression. Our simulations also showed that this inhibitory effect of hydrophobic NPs can be mitigated through PEGylation. Our results provide useful guidelines for molecular design of NPs as carrier systems for pulmonary drug delivery.
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Affiliation(s)
- Xubo Lin
- State Key Laboratory of Bioelectronics and Jiangsu key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, People's Republic of China.
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Interaction of Nanoparticles with Lipid Monolayers and Lung Surfactant Films. MEASURING BIOLOGICAL IMPACTS OF NANOMATERIALS 2014. [DOI: 10.1007/11663_2014_9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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47
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Beck-Broichsitter M, Ruppert C, Schmehl T, Günther A, Seeger W. Biophysical inhibition of synthetic vs. naturally-derived pulmonary surfactant preparations by polymeric nanoparticles. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:474-81. [DOI: 10.1016/j.bbamem.2013.10.016] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 10/16/2013] [Accepted: 10/21/2013] [Indexed: 12/24/2022]
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48
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Yang B, Liu J, Zheng H, Zhang SXA. Light-Triggered Molecular Level Self-Healing Spiropyran Thin Film. CHINESE J CHEM 2013. [DOI: 10.1002/cjoc.201300639] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Farnoud AM, Fiegel J. Interaction of Dipalmitoyl Phosphatidylcholine Monolayers with a Particle-Laden Subphase. J Phys Chem B 2013; 117:12124-34. [DOI: 10.1021/jp405924y] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Amir M. Farnoud
- Department
of Chemical and Biochemical Engineering, The University of Iowa, 4133 Seamans Center, Iowa City, Iowa 52242, United States
| | - Jennifer Fiegel
- Department
of Chemical and Biochemical Engineering, The University of Iowa, 4133 Seamans Center, Iowa City, Iowa 52242, United States
- Department
of Pharmaceutical Sciences and Experimental Therapeutics, The University of Iowa, 115 South Grand Avenue, S215 Pharmacy
Building, Iowa City, Iowa 52242, United States
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Tatur S, Maccarini M, Barker R, Nelson A, Fragneto G. Effect of functionalized gold nanoparticles on floating lipid bilayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:6606-14. [PMID: 23638939 DOI: 10.1021/la401074y] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The development of novel nano-engineered materials poses important questions regarding the impact of these new materials on living systems. Possible adverse effects must be assessed in order to prevent risks for health and the environment. On the other hand, a thorough understanding of their interaction with biological systems might also result in the creation of novel biomedical applications. We present a study on the interaction of model lipid membranes with gold nanoparticles (AuNP) of different surface modifications. Neutron reflectometry experiments on zwitterionic lipid double bilayers were performed in the presence of AuNP functionalized with cationic and anionic head groups. Structural information was obtained that provided insight into the fate of the AuNPs with regard to the integrity of the model cell membranes. The AuNPs functionalized with cationic head groups penetrate into the hydrophobic moiety of the lipid bilayers and cause membrane disruption at an increased concentration. In contrast, the AuNPs functionalized with anionic head groups do not enter but seem to impede the destruction of the lipid bilayer at an alkaline pH. The information obtained might influence the strategy for a better nanoparticle risk assessment based on a surface charge evaluation and contribute to nano-safety considerations during their design.
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Affiliation(s)
- Sabina Tatur
- Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607, United States.
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