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Bérard R, Sassoye C, Terrisse H, Bertoncini P, Humbert B, Cassaignon S, Le Caër S. Effect of Crystalline Phase and Facet Nature on the Adsorption of Phosphate Species onto TiO 2 Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:16258-16271. [PMID: 39039729 DOI: 10.1021/acs.langmuir.4c01447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
The current use of TiO2 nanoparticles raises questions about their impact on our health. Cells interact with these nanoparticles via the phospholipid membrane and, in particular, the phosphate head. This highlights the significance of understanding the interaction between phosphates and nanoparticles possessing distinct crystalline structures, specifically anatase and rutile. It is crucial to determine whether this adsorption varies based on the exposed facet(s). Consequently, various nanoparticles of anatase and rutile TiO2, characterized by well-defined morphologies, were synthesized. In the case of the anatase samples, bipyramids, needles, and cubes were obtained. For the rutile samples, all exhibited a needle-like shape, featuring {110} facets along the long direction of the needles and facets {111} on the upper and lower parts. Phosphate adsorption experiments carried out at pH 2 revealed that the maximum adsorption was relatively consistent across all samples, averaging around 1.5 phosphate·nm-2 in all cases. Experiments using infrared spectroscopy on dried TiO2 powders showed that phosphates were chemisorbed on the surfaces and that the mode of adsorption depended on the crystalline phase and the nature of the facet: the anatase phase favors bidentate adsorption more than the rutile crystalline phase.
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Affiliation(s)
- Rémi Bérard
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif sur Yvette Cedex, France
- Sorbonne Université, CNRS, Laboratoire Chimie de la Matière Condensée de Paris, LCMCP, UMR 7574, 4 Place Jussieu, 75005 Paris, France
| | - Capucine Sassoye
- Sorbonne Université, CNRS, Laboratoire Chimie de la Matière Condensée de Paris, LCMCP, UMR 7574, 4 Place Jussieu, 75005 Paris, France
| | - Hélène Terrisse
- Nantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMN, UMR 6502, 2 rue de la Houssinière, 44000 Nantes, France
| | - Patricia Bertoncini
- Nantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMN, UMR 6502, 2 rue de la Houssinière, 44000 Nantes, France
| | - Bernard Humbert
- Nantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMN, UMR 6502, 2 rue de la Houssinière, 44000 Nantes, France
| | - Sophie Cassaignon
- Sorbonne Université, CNRS, Laboratoire Chimie de la Matière Condensée de Paris, LCMCP, UMR 7574, 4 Place Jussieu, 75005 Paris, France
| | - Sophie Le Caër
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif sur Yvette Cedex, France
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2
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Machin JM, Kalli AC, Ranson NA, Radford SE. Protein-lipid charge interactions control the folding of outer membrane proteins into asymmetric membranes. Nat Chem 2023; 15:1754-1764. [PMID: 37710048 PMCID: PMC10695831 DOI: 10.1038/s41557-023-01319-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 08/08/2023] [Indexed: 09/16/2023]
Abstract
Biological membranes consist of two leaflets of phospholipid molecules that form a bilayer, each leaflet comprising a distinct lipid composition. This asymmetry is created and maintained in vivo by dedicated biochemical pathways, but difficulties in creating stable asymmetric membranes in vitro have restricted our understanding of how bilayer asymmetry modulates the folding, stability and function of membrane proteins. In this study, we used cyclodextrin-mediated lipid exchange to generate liposomes with asymmetric bilayers and characterize the stability and folding kinetics of two bacterial outer membrane proteins (OMPs), OmpA and BamA. We found that excess negative charge in the outer leaflet of a liposome impedes their insertion and folding, while excess negative charge in the inner leaflet accelerates their folding relative to symmetric liposomes with the same membrane composition. Using molecular dynamics, mutational analysis and bioinformatics, we identified a positively charged patch critical for folding and stability. These results rationalize the well-known 'positive-outside' rule of OMPs and suggest insights into the mechanisms that drive OMP folding and assembly in vitro and in vivo.
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Affiliation(s)
- Jonathan M Machin
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Antreas C Kalli
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK.
- Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds, UK.
| | - Neil A Ranson
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK.
| | - Sheena E Radford
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK.
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3
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Esterhuizen M, Lutsko M, Kim Y, Yoon H, Park CB, Kim YJ, Pflugmacher S. Titanium (IV) oxide anatase nanoparticles as vectors for diclofenac: assessing the antioxidative responses to single and combined exposures in the aquatic macrophyte Egeria densa. ECOTOXICOLOGY (LONDON, ENGLAND) 2023; 32:394-402. [PMID: 37000303 PMCID: PMC10102128 DOI: 10.1007/s10646-023-02646-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 03/16/2023] [Indexed: 06/19/2023]
Abstract
Titanium dioxide, frequently used in commonplace products, is now regularly detected in aquatic environments. Understanding its toxic effects on native biota is essential. However, combined toxicity with commonly occurring pollutants, such as the pharmaceutical diclofenac, may provide more insight into environmental situations. Therefore, the present study aimed to evaluate the effects of titanium dioxide and diclofenac, individually and combined, on the macrophyte Egeria densa. Diclofenac uptake and removal by the macrophyte were assessed. Diclofenac and titanium dioxide were mixed prior to exposure to allow binding, which was assessed. Toxicity of the individual compounds and the combination was evaluated by assaying enzymes as bioindicators of biotransformation and the antioxidative system. Cytosolic glutathione S-transferase and glutathione reductase activities were increased by diclofenac, titanium dioxide, and the combination. Both enzymes' activities were more significantly elevated by diclofenac and the combination than nanoparticles alone. Microsomal glutathione S-transferase was unaffected by diclofenac exposure but inhibited with titanium dioxide and the mixture. Diclofenac elicited the most significant response. Based on the data, the cytosolic enzymes effectively prevented damage.
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Affiliation(s)
- Maranda Esterhuizen
- Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, Niemenkatu 73, University of Helsinki, 15140, Lahti, Finland.
- Helsinki Institute of Sustainability Science (HELSUS), Fabianinkatu 33, 00014, Helsinki, Finland.
- Clayton H. Riddell Faculty of Environment, Earth, and Resources, University of Manitoba, Wallace Building, 125 Dysart Road, Winnipeg, MB, R3T 2N2, Canada.
- Korea Institute of Science and Technology Europe (KIST Europe) Forschungsgesellschaft GmbH, Joint Laboratory of Applied Ecotoxicology, Environmental Safety Group, Universität des Saarlandes Campus E7 1, 66123, Saarbrücken, Germany.
| | - Mariia Lutsko
- Department of Biotechnology, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355, Berlin, Germany
| | - Youngsam Kim
- Korea Institute of Science and Technology Europe (KIST Europe) Forschungsgesellschaft GmbH, Joint Laboratory of Applied Ecotoxicology, Environmental Safety Group, Universität des Saarlandes Campus E7 1, 66123, Saarbrücken, Germany
| | - Hakwon Yoon
- Environmental Exposure & Toxicology Research Center, Korea Institute of Toxicology, 17, Jegok-gil, Jinju, 52834, Republic of Korea
| | - Chang-Beom Park
- Environmental Exposure & Toxicology Research Center, Korea Institute of Toxicology, 17, Jegok-gil, Jinju, 52834, Republic of Korea
| | - Young Jun Kim
- Korea Institute of Science and Technology Europe (KIST Europe) Forschungsgesellschaft GmbH, Joint Laboratory of Applied Ecotoxicology, Environmental Safety Group, Universität des Saarlandes Campus E7 1, 66123, Saarbrücken, Germany
| | - Stephan Pflugmacher
- Clayton H. Riddell Faculty of Environment, Earth, and Resources, University of Manitoba, Wallace Building, 125 Dysart Road, Winnipeg, MB, R3T 2N2, Canada
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Guiot F, Praud C, Quillard S, Humbert B, Ropers MH, Paris M, Terrisse H. Surface reactivity of anatase particles towards phosphated species. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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5
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Batiuskaite D, Bruzaite I, Snitka V, Ramanavicius A. Assessment of TiO2 Nanoparticle Impact on Surface Morphology of Chinese Hamster Ovary Cells. MATERIALS 2022; 15:ma15134570. [PMID: 35806697 PMCID: PMC9267787 DOI: 10.3390/ma15134570] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 12/04/2022]
Abstract
The process of nanoparticles entering the cells of living organisms is an important step in understanding the influence of nanoparticles on biological processes. The interaction of nanoparticles with the cell membrane is the first step in the penetration of nanoparticles into cells; however, the penetration mechanism is not yet fully understood. This work reported the study of the interaction between TiO2 nanoparticles (TiO2-NPs) and Chinese hamster ovary (CHO) cells using an in vitro model. The characterization of crystalline phases of TiO2 NPs was evaluated by transmission electron microscopy (TEM), X-ray diffraction (XRD) spectrum, and atomic force microscopy (AFM). Interaction of these TiO2 nanoparticles (TiO2- NPs) with the CHO cell membrane was investigated using atomic force microscopy (AFM) and Raman spectroscopy. The XRD analysis result showed that the structure of the TiO2 particles was in the rutile phase with a crystallite size of 60 nm, while the AFM result showed that the particle size distribution had two peaks with 12.1 nm and 60.5 nm. The TEM analysis confirmed the rutile phase of TiO2 powder. Our study showed that exposure of CHO cells to TiO2-NPs caused morphological changes in the cell membranes and influenced the viability of cells. The TiO2-NPs impacted the cell membrane surface; images obtained by AFM revealed an ‘ultra structure‘ with increased roughness and pits on the surface of the membrane. The depth of the pits varied in the range of 40–80 nm. The maximal depth of the pits after the treatment with TiO2-NPs was 100% higher than the control values. It is assumed that these pits were caveolae participating in the endocytosis of TiO2-NPs. The research results suggest that the higher maximal depth of the pits after the exposure of TiO2-NPs was determined by the interaction of these TiO2-NPs with the cell’s plasma membrane. Moreover, some of pits may have been due to plasma membrane damage (hole) caused by the interaction of TiO2-NPs with membrane constituents. The analysis of AFM images demonstrated that the membrane roughness was increased with exposure time of the cells to TiO2-NPs dose. The average roughness after the treatment for 60 min with TiO2-NPs increased from 40 nm to 78 nm. The investigation of the membrane by Raman spectroscopy enabled us to conclude that TiO2-NPs interacted with cell proteins, modified their conformation, and potentially influenced the structural damage of the plasma membrane.
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Affiliation(s)
- Danute Batiuskaite
- Department of Biology, Faculty of Natural Sciences, Vytautas Magnus University, 58 K. Donelaicio Str., LT-44248 Kaunas, Lithuania;
| | - Ingrida Bruzaite
- Department of Chemistry and Bioengineering, Faculty of Fundamental Sciences, Vilnius Gediminas Technical University, Sauletekio Av. 11, LT-10223 Vilnius, Lithuania;
| | - Valentinas Snitka
- Research Center for Microsystems and Nanotechnology, Kaunas University of Technology, 65 Studentu Str., LT-51369 Kaunas, Lithuania;
| | - Arunas Ramanavicius
- Department of Physical Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, 24 Naugarduko Str., LT-03225 Vilnius, Lithuania
- Laboratory of Nanotechnology, State Research Institute Centre for Physical Sciences and Technology, Sauletekio Av. 3, LT-10257 Vilnius, Lithuania
- Correspondence: ; Tel.: +37-060-032-332
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6
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Jalili P, Krause BC, Lanceleur R, Burel A, Jungnickel H, Lampen A, Laux P, Luch A, Fessard V, Hogeveen K. Chronic effects of two rutile TiO 2 nanomaterials in human intestinal and hepatic cell lines. Part Fibre Toxicol 2022; 19:37. [PMID: 35578293 PMCID: PMC9112549 DOI: 10.1186/s12989-022-00470-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 04/05/2022] [Indexed: 01/05/2023] Open
Abstract
Background TiO2 nanomaterials (NMs) are present in a variety of food and personal hygiene products, and consumers are exposed daily to these NMs through oral exposition. While the bulk of ingested TiO2 NMs are eliminated rapidly in stool, a fraction is able to cross the intestinal epithelial barrier and enter systemic circulation from where NMs can be distributed to tissues, primarily liver and spleen. Daily exposure to TiO2 NMs, in combination with a slow rate of elimination from tissues, results in their accumulation within different tissues. Considerable evidence suggests that following oral exposure to TiO2 NMs, the presence of NMs in tissues is associated with a number of adverse effects, both in intestine and liver. Although numerous studies have been performed in vitro investigating the acute effects of TiO2 NMs in intestinal and hepatic cell models, considerably less is known about the effect of repeated exposure on these models. In this study, we investigated the cytotoxic effects of repeated exposure of relevant models of intestine and liver to two TiO2 NMs differing in hydrophobicity for 24 h, 1 week and 2 weeks at concentrations ranging from 0.3 to 80 µg/cm2. To study the persistence of these two NMs in cells, we included a 1-week recovery period following 24 h and 1-week treatments. Cellular uptake by TEM and ToF–SIMS analyses, as well as the viability and pro-inflammatory response were evaluated. Changes in the membrane composition in Caco-2 and HepaRG cells treated with TiO2 NMs for up to 2 weeks were also studied.
Results Despite the uptake of NM-103 and NM-104 in cells, no significant cytotoxic effects were observed in either Caco-2 or HepaRG cells treated for up to 2 weeks at NM concentrations up to 80 µg/cm2. In addition, no significant effects on IL-8 secretion were observed. However, significant changes in membrane composition were observed in both cell lines. Interestingly, while most of these phospholipid modifications were reversed following a 1-week recovery, others were not affected by the recovery period. Conclusion These findings indicate that although no clear effects on cytotoxicity were observed following repeated exposure of differentiated Caco-2 and HepaRG cells to TiO2 NMs, subtle effects on membrane composition could induce potential adverse effects in the long-term. Supplementary Information The online version contains supplementary material available at 10.1186/s12989-022-00470-1.
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Affiliation(s)
- Pégah Jalili
- Toxicology of Contaminants Unit, Fougères Laboratory, ANSES, French Agency for Food, Environmental and Occupational Health & Safety, 10 B rue Claude Bourgelat - Javené, 35306, Fougères, France
| | | | - Rachelle Lanceleur
- Toxicology of Contaminants Unit, Fougères Laboratory, ANSES, French Agency for Food, Environmental and Occupational Health & Safety, 10 B rue Claude Bourgelat - Javené, 35306, Fougères, France
| | - Agnès Burel
- MRic Cell Imaging Platform, BIOSIT, University of Rennes 1, 2 avenue du Pr Léon Bernard - CS 34317, 35043, Rennes, France
| | - Harald Jungnickel
- German Federal Institute for Risk Assessment, Max-Dohrn-Straße 8-10, 10589, Berlin, Germany
| | - Alfonso Lampen
- German Federal Institute for Risk Assessment, Max-Dohrn-Straße 8-10, 10589, Berlin, Germany
| | - Peter Laux
- German Federal Institute for Risk Assessment, Max-Dohrn-Straße 8-10, 10589, Berlin, Germany
| | - Andreas Luch
- German Federal Institute for Risk Assessment, Max-Dohrn-Straße 8-10, 10589, Berlin, Germany
| | - Valérie Fessard
- Toxicology of Contaminants Unit, Fougères Laboratory, ANSES, French Agency for Food, Environmental and Occupational Health & Safety, 10 B rue Claude Bourgelat - Javené, 35306, Fougères, France
| | - Kevin Hogeveen
- Toxicology of Contaminants Unit, Fougères Laboratory, ANSES, French Agency for Food, Environmental and Occupational Health & Safety, 10 B rue Claude Bourgelat - Javené, 35306, Fougères, France.
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7
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Phue WH, Bahadi M, Dynes JJ, Wang J, Kuppili VSC, Ismail A, Hameed A, George S. Protein-biomolecule interactions play a major role in shaping corona proteome: studies on milk interacted dietary particles. NANOSCALE 2021; 13:13353-13367. [PMID: 34477741 DOI: 10.1039/d1nr03712a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Despite the significance of surface absorbed proteins in determining the biological identity of nanoparticles (NPs) entering the human body, little is known about the surface corona and factors that shape their formation on dietary particles used as food additives. In this study, food grade NPs of silica and titania and their food additive counterparts (E551 and E171) were interacted with milk proteins or with skimmed milk and the levels of protein adsorption were quantified. Characteristics of proteins correlating with their level of adsorption to NPs were determined using partial least squares regression analysis. Results from individual protein-particle interactions revealed the significance of factors such as zeta potential, hydrophobicity and hydrodynamic size of particles, and protein characteristics such as the number of beta strands, isoelectric points, the number of amino acid units (Ile, Tyr, Ala, Gly, Pro, Asp, and Arg), and phosphorylation sites on their adsorption to particles. Similar regression analysis was performed to identify the characteristics of twenty abundant and enriched proteins (identified using LC-MS/MS analysis) for their association with the surface corona of milk-interacted particles. Contrary to individual protein-particle interactions, protein characteristics such as helices, turns, protein structures, disulfide bonds, the number of amino acid units (Cys, Met, Leu, and Trp), and Fe binding sites were significant for their association with the surface corona of milk interacted particles. This difference in factors identified from individual proteins and milk interacted particles suggested possible interactions of proteins with surface adsorbed biomolecules as revealed by scanning transmission X-ray microscopy and other biochemical assays.
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Affiliation(s)
- Wut H Phue
- Department of Food Science & Agricultural Chemistry, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, QC, Canada H9X 3V9.
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Shen Q, Wu H, Wang H, Zhao Q, Xue J, Ma J, Wang H. Monodisperse microsphere-based immobilized metal affinity chromatography approach for preparing Antarctic krill phospholipids followed by HILIC-MS analysis. Food Chem 2020; 344:128585. [PMID: 33223290 DOI: 10.1016/j.foodchem.2020.128585] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 11/04/2020] [Accepted: 11/04/2020] [Indexed: 01/25/2023]
Abstract
Phospholipids enriched krill is a functional food beneficial in cardiovascular diseases. Herein, monodisperse microsphere-based immobilized metal affinity chromatographic material (MM-IMAC) was synthesized with Ti4+ incorporated to enrich phospholipids from krill by coordination with phosphate group. The extract was profiled by hydrophilic interaction chromatography-mass spectrometry (HILIC-MS) with 154 phospholipid molecular species detected. The parameters were loading solvent n-hexane/isopropanol (2:8, v/v), flow rate 0.8 mL·min-1, and eluting volume 1 mL. Besides, eicosapentaenoic and docosahexaenoic acids structured phospholipids were located, such as phosphatidylcholine (PC) 20:5/22:6, phosphatidylinositol (PI) 18:0/20:5, etc. Finally, this method was validated in linearity (R2 ≥ 0.9953), sensitivity (LOD ≤ 0.53 μg·mL-1 and LOQ ≤ 1.66 μg·mL-1), precision (RSDintraday ≤ 4.86% and RSDinterday ≤ 6.25%), and recovery (58-83%). It indicated that the MM-Ti4+-IMAC-HILIC-MS was reliable and efficient in specific study of phospholipids in food matrix.
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Affiliation(s)
- Qing Shen
- Zhejiang Province Key Laboratory of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China; Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China
| | - Huanming Wu
- Zhejiang Provincial Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis, Institute of Mass Spectrometry, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Honghai Wang
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China
| | - Qiaoling Zhao
- Zhoushan Institute for Food & Drug Control, Zhoushan 316000, China
| | - Jing Xue
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China.
| | - Jianfeng Ma
- Zhejiang Province Key Laboratory of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Haixing Wang
- Zhejiang Province Key Laboratory of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.
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9
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Interaction of particles with mucosae and cell membranes. Colloids Surf B Biointerfaces 2020; 186:110657. [DOI: 10.1016/j.colsurfb.2019.110657] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 11/21/2019] [Accepted: 11/22/2019] [Indexed: 01/15/2023]
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10
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Demangeat E, Pédrot M, Dia A, Bouhnik-Le-Coz M, Davranche M, Cabello-Hurtado F. Surface modifications at the oxide/water interface: Implications for Cu binding, solution chemistry and chemical stability of iron oxide nanoparticles. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113626. [PMID: 31796322 DOI: 10.1016/j.envpol.2019.113626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 11/12/2019] [Indexed: 06/10/2023]
Abstract
The oxidation of magnetite into maghemite and its coating by natural organic constituents are common changes that affect the reactivity of iron oxide nanoparticles (IONP) in aqueous environments. Certain ubiquitous compounds such as humic acids (HA) and phosphatidylcholine (PC), displaying a high affinity for both copper (Cu) and IONP, could play a critical role in the interactions involved between both compounds. The adsorption of Cu onto four different IONP was studied: magnetite nanoparticles (magnNP), maghemite NP (maghNP), HA- and PC-coated magnetite NP (HA-magnNP and PC-magnNP, respectively). According to the results, the percentage of adsorbed Cu increases with increasing pH, irrespective of the IONP. Thus, protonation/deprotonation reactions are likely involved within Cu adsorption mechanism. Contrary to the other studied IONP, HA-magnNP favor Cu adsorption at most of the pH tested including acidic pH (pH = 3), suggesting that part of the active surface sites for Cu2+ were not grabbed by protons. The Freundlich adsorption isotherm of HA-magnNP provides the highest sorption constant KF (bonding energy) and n value which supports a heterogeneous sorption process. The heterogeneous adsorption between HA-magnNP and Cu2+ can be explained by both the diversity of the binding sites HA procured and the formation of multidendate complexes between Cu2+ and some of the HA functional groups. Such favorable adsorption process was neither observed on PC-coated-magnNP nor on maghNP, whose behaviors were comparable to that of magnNP. On another hand, HA and PC coatings considerably reduced iron (Fe) dissolution from magnNP as compared with magnNP. It was suggested that HA and PC coatings either provided efficient shield against Fe leaching or fostered dissolved Fe re-adsorption onto the functional groups at the coated magnNP surfaces. Thus, this study can help to better understand the complex interfacial reactions between cations-organic matter-colloidal surfaces which are relevant in environmental and agricultural contexts. This work showed that magnetite NP properties can be affected by surface modifications, which drive NP chemical stability and Cu adsorption, thereby affecting the global water chemistry.
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Affiliation(s)
- Edwige Demangeat
- Univ Rennes, CNRS, Géosciences Rennes, UMR 6118, 35000 Rennes, France
| | - Mathieu Pédrot
- Univ Rennes, CNRS, Géosciences Rennes, UMR 6118, 35000 Rennes, France.
| | - Aline Dia
- Univ Rennes, CNRS, Géosciences Rennes, UMR 6118, 35000 Rennes, France
| | | | - Mélanie Davranche
- Univ Rennes, CNRS, Géosciences Rennes, UMR 6118, 35000 Rennes, France
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11
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Svensson FG, Daniel G, Tai CW, Seisenbaeva GA, Kessler VG. Titanium phosphonate oxo-alkoxide “clusters”: solution stability and facile hydrolytic transformation into nano titania. RSC Adv 2020; 10:6873-6883. [PMID: 35493899 PMCID: PMC9049727 DOI: 10.1039/c9ra10691j] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 02/09/2020] [Indexed: 01/14/2023] Open
Abstract
Oligonuclear Ti(iv) oxo-alkoxide-phosphonate complexes, produced by reaction of tBuPO(OH)2 with Ti(OR)4, are easily topotactically hydrolyzed forming intricate nanostructures.
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Affiliation(s)
- Fredric G. Svensson
- Department of Molecular Sciences
- Swedish University of Agricultural Sciences
- 750 07 Uppsala
- Sweden
| | - Geoffrey Daniel
- Department of Biomaterials and Technology/Wood Science
- Swedish University of Agricultural Sciences
- 75007 Uppsala
- Sweden
| | - Cheuk-Wai Tai
- Department of Materials and Environmental Chemistry
- Stockholm University
- 106 91 Stockholm
- Sweden
| | - Gulaim A. Seisenbaeva
- Department of Molecular Sciences
- Swedish University of Agricultural Sciences
- 750 07 Uppsala
- Sweden
| | - Vadim G. Kessler
- Department of Molecular Sciences
- Swedish University of Agricultural Sciences
- 750 07 Uppsala
- Sweden
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12
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Interplay between amphiphilic peptides and nanoparticles for selective membrane destabilization and antimicrobial effects. Curr Opin Colloid Interface Sci 2019. [DOI: 10.1016/j.cocis.2019.09.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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13
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Wang X, Li X, Wang H, Zhang X, Zhang L, Wang F, Liu J. Charge and Coordination Directed Liposome Fusion onto SiO 2 and TiO 2 Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1672-1681. [PMID: 30558422 DOI: 10.1021/acs.langmuir.8b02979] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
TiO2 and SiO2 are very useful materials for building biointerfaces. A particularly interesting aspect is their interaction with lipid bilayers. Many past research efforts focused on phosphocholine (PC) lipids, which form supported lipid bilayers (SLB) on SiO2 at physiological conditions but are adsorbed as intact liposomes on TiO2. Low pH was required to form PC SLBs on TiO2. This work intends to understand the surface forces and chemistry responsible for such differences. Two charge neutral lipids: 1,2-dioleoyl- sn-glycero-3-phosphocholine (DOPC) and 2-((2,3-bis(oleoyloxy)propyl)dimethylammonio)ethyl ethyl phosphate (DOCPe) and two negatively charged lipids: 1,2-dioleoyl- sn-glycero-3-phospho-l-serine (DOPS) and 2-((2,3-bis(oleoyloxy)propyl)dimethylammonio)ethyl hydrogen phosphate (DOCP) were used. Using calcein leakage assays, adsorption measurement, cryo-TEM, and washing, we concluded that charge is the dominating factor on SiO2. The two neutral lipids form SLB on SiO2 at pH 3 and 7, but the two negatively charged ones cannot form. On TiO2, both charge and coordination chemistry are important. The two anionic lipids formed SLB from pH 3 to 10. DOCP had stronger affinity than DOPS likely due to the tighter terminal phosphate binding of the former. The two neutral liposomes formed SLB only at pH 3, where phosphate interaction and van der Waals force are deemed important. The pH 3 prepared TiO2 DOPC SLBs are destabilized at neutral pH, indicating the reversible nature of the interaction. This work has provided new insights into two important materials interacting with common liposomes, which are important for reproducible biosensing, device fabrication, and drug delivery applications.
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Affiliation(s)
- Xiaoshun Wang
- School of Food and Biological Engineering , Hefei University of Technology , Hefei , Anhui 230009 , China
| | - Xiaoqiu Li
- Center of Intervention Radiology, Center of Precise Medicine , Zhuhai People's Hospital , No. 79 Kangning Road , Zhuhai , Guangdong Province 519000 , China
| | - Hui Wang
- School of Food and Biological Engineering , Hefei University of Technology , Hefei , Anhui 230009 , China
| | - Xiaohan Zhang
- Department of Chemistry, Waterloo Institute for Nanotechnology , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
| | - Lei Zhang
- Department of Chemistry, Waterloo Institute for Nanotechnology , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
| | - Feng Wang
- School of Food and Biological Engineering , Hefei University of Technology , Hefei , Anhui 230009 , China
- Department of Chemistry, Waterloo Institute for Nanotechnology , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
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14
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Cocovi-Solberg DJ, Rosende M, Michalec M, Miró M. 3D Printing: The Second Dawn of Lab-On-Valve Fluidic Platforms for Automatic (Bio)Chemical Assays. Anal Chem 2018; 91:1140-1149. [DOI: 10.1021/acs.analchem.8b04900] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- David J. Cocovi-Solberg
- FI-TRACE group, Department of Chemistry, University of the Balearic Islands, E-07122 Palma de Mallorca, Illes Balears Spain
| | - María Rosende
- FI-TRACE group, Department of Chemistry, University of the Balearic Islands, E-07122 Palma de Mallorca, Illes Balears Spain
| | - Michał Michalec
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
- MISMaP College, University of Warsaw, Banacha 2C, 02-097 Warsaw, Poland
| | - Manuel Miró
- FI-TRACE group, Department of Chemistry, University of the Balearic Islands, E-07122 Palma de Mallorca, Illes Balears Spain
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15
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Wiącek AE, Gozdecka A, Jurak M. Physicochemical Characteristics of Chitosan–TiO2 Biomaterial. 1. Stability and Swelling Properties. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b04257] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Agnieszka E. Wiącek
- Department of Interfacial
Phenomena, Faculty of Chemistry, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
| | - Agata Gozdecka
- Department of Interfacial
Phenomena, Faculty of Chemistry, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
| | - Małgorzata Jurak
- Department of Interfacial
Phenomena, Faculty of Chemistry, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
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16
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Seisenbaeva GA, Fromell K, Vinogradov VV, Terekhov AN, Pakhomov AV, Nilsson B, Ekdahl KN, Vinogradov VV, Kessler VG. Dispersion of TiO 2 nanoparticles improves burn wound healing and tissue regeneration through specific interaction with blood serum proteins. Sci Rep 2017; 7:15448. [PMID: 29133853 PMCID: PMC5684224 DOI: 10.1038/s41598-017-15792-w] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 11/02/2017] [Indexed: 12/30/2022] Open
Abstract
Burn wounds are one of the most important causes of mortality and especially morbidity around the world. Burn wound healing and skin tissue regeneration remain thus one of the most important challenges facing the mankind. In the present study we have addressed this challenge, applying a solution-stabilized dispersion TiO2 nanoparticles, hypothesizing that their ability to adsorb proteins will render them a strong capacity in inducing body fluid coagulation and create a protective hybrid material coating. The in vitro study of interaction between human blood and titania resulted at enhanced TiO2 concentrations in formation of rather dense gel composite materials and even at lower content revealed specific adsorption pattern initiating the cascade response, promising to facilitate the regrowth of the skin. The subsequent in vivo study of the healing of burn wounds in rats demonstrated formation of a strongly adherent crust of a nanocomposite, preventing infection and inflammation with quicker reduction of wound area compared to untreated control. The most important result in applying the TiO2 dispersion was the apparently improved regeneration of damaged tissues with appreciable decrease in scar formation and skin color anomalies.
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Affiliation(s)
- Gulaim A Seisenbaeva
- Department of Chemistry and Biotechnology, BioCenter, Swedish University of Agricultural Sciences, Box 7015, SE-750 07, Uppsala, Sweden
| | - Karin Fromell
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory C5:3, Uppsala University, SE-751 85, Uppsala, Sweden
| | - Vasiliy V Vinogradov
- Laboratory of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Kronverksky Pr. 49, St, Petersburg, 197101, Russian Federation
| | - Aleksey N Terekhov
- Ivanovo State Medical Academy, Sheremetevskiy prosp. 8, Ivanovo, 153012, Russian Federation
| | - Andrey V Pakhomov
- Ivanovo State Medical Academy, Sheremetevskiy prosp. 8, Ivanovo, 153012, Russian Federation
| | - Bo Nilsson
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory C5:3, Uppsala University, SE-751 85, Uppsala, Sweden
| | - Kristina Nilsson Ekdahl
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory C5:3, Uppsala University, SE-751 85, Uppsala, Sweden
- Linnæus Centre for Biomaterials Chemistry, Linnæus University, SE-391 82, Kalmar, Sweden
| | - Vladimir V Vinogradov
- Laboratory of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Kronverksky Pr. 49, St, Petersburg, 197101, Russian Federation
| | - Vadim G Kessler
- Department of Chemistry and Biotechnology, BioCenter, Swedish University of Agricultural Sciences, Box 7015, SE-750 07, Uppsala, Sweden.
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17
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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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18
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Malekkhaiat Häffner S, Malmsten M. Membrane interactions and antimicrobial effects of inorganic nanoparticles. Adv Colloid Interface Sci 2017; 248:105-128. [PMID: 28807368 DOI: 10.1016/j.cis.2017.07.029] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 07/20/2017] [Accepted: 07/25/2017] [Indexed: 12/19/2022]
Abstract
Interactions between nanoparticles and biological membranes are attracting increasing attention in current nanomedicine, and play a key role both for nanotoxicology and for utilizing nanomaterials in diagnostics, drug delivery, functional biomaterials, as well as combinations of these, e.g., in theranostics. In addition, there is considerable current interest in the use of nanomaterials as antimicrobial agents, motivated by increasing resistance development against conventional antibiotics. Here, various nanomaterials offer opportunities for triggered functionalites to combat challenging infections. Although the performance in these diverse applications is governed by a complex interplay between the nanomaterial, the properties of included drugs (if any), and the biological system, nanoparticle-membrane interactions constitute a key initial step and play a key role for the subsequent biological response. In the present overview, the current understanding of inorganic nanomaterials as antimicrobial agents is outlined, with special focus on the interplay between antimicrobial effects and membrane interactions, and how membrane interactions and antimicrobial effects of such materials depend on nanoparticle properties, membrane composition, and external (e.g., light and magnetic) fields.
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Affiliation(s)
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark; Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden.
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19
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Suga K, Tauchi A, Ishigami T, Okamoto Y, Umakoshi H. Preferential Adsorption of l-Histidine onto DOPC/Sphingomyelin/3β-[N-(N',N'-dimethylaminoethane)carbamoyl]cholesterol Liposomes in the Presence of Chiral Organic Acids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:3831-3838. [PMID: 28272888 DOI: 10.1021/acs.langmuir.6b03264] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We investigated the effect of organic acids such as mandelic acid (MA) and tartaric acid (TA) on the adsorption behavior of both histidine (His) and propranolol (PPL) onto liposomes. A cationic and heterogeneous liposome prepared using 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC)/sphingomyelin (SM)/3β-[N-(N',N'-dimethylaminoethane)carbamoyl]cholesterol (DC-Ch) in a ratio of (4/3/3) showed the highest adsorption efficiency of MA and TA independent of chirality, while neutral liposome DOPC/SM/cholesterol = (4/3/3) showed low efficiency. As expected, electrostatic interactions were dominant in MA or TA adsorption onto DOPC/SM/DC-Ch = (4/3/3) liposomes, suggesting that organic acids had adsorbed onto SM/DC-Ch-enriched domains. The adsorption behaviors of organic acids onto DOPC/SM/DC-Ch = (4/3/3) were governed by Langmuir adsorption isotherms. For adsorption, the membrane polarities slightly decreased (i.e., membrane surface was hydrophilic), but no alterations in membrane fluidity were observed. In the presence of organic acids that had been preincubated with DOPC/SM/DC-Ch = (4/3/3), the adsorption of l- and d-His onto those liposomes was examined. Preferential l-His adsorption was dramatically prevented only in the presence of l-MA, suggesting that the adsorption sites for l-His and l-MA on DOPC/SM/DC-Ch = (4/3/3) liposomes are competitive, while those for l-His and d-MA, l-TA, and d-TA are isolated.
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Affiliation(s)
- Keishi Suga
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Atsushi Tauchi
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Takaaki Ishigami
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Yukihiro Okamoto
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Hiroshi Umakoshi
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
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20
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Dudefoi W, Terrisse H, Richard-Plouet M, Gautron E, Popa F, Humbert B, Ropers MH. Criteria to define a more relevant reference sample of titanium dioxide in the context of food: a multiscale approach. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2017; 34:653-665. [PMID: 28105903 DOI: 10.1080/19440049.2017.1284346] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Titanium dioxide (TiO2) is a transition metal oxide widely used as a white pigment in various applications, including food. Due to the classification of TiO2 nanoparticles by the International Agency for Research on Cancer as potentially harmful for humans by inhalation, the presence of nanoparticles in food products needed to be confirmed by a set of independent studies. Seven samples of food-grade TiO2 (E171) were extensively characterised for their size distribution, crystallinity and surface properties by the currently recommended methods. All investigated E171 samples contained a fraction of nanoparticles, however, below the threshold defining the labelling of nanomaterial. On the basis of these results and a statistical analysis, E171 food-grade TiO2 totally differs from the reference material P25, confirming the few published data on this kind of particle. Therefore, the reference material P25 does not appear to be the most suitable model to study the fate of food-grade TiO2 in the gastrointestinal tract. The criteria currently to obtain a representative food-grade sample of TiO2 are the following: (1) crystalline-phase anatase, (2) a powder with an isoelectric point very close to 4.1, (3) a fraction of nanoparticles comprised between 15% and 45%, and (4) a low specific surface area around 10 m2 g-1.
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Affiliation(s)
- William Dudefoi
- a UR1268 BIA (Biopolymères Interactions Assemblages) , INRA , Nantes , France
| | - Hélène Terrisse
- b Institut des Matériaux Jean Rouxel (IMN) , Université de Nantes, CNRS , Nantes , France
| | | | - Eric Gautron
- b Institut des Matériaux Jean Rouxel (IMN) , Université de Nantes, CNRS , Nantes , France
| | - Florin Popa
- b Institut des Matériaux Jean Rouxel (IMN) , Université de Nantes, CNRS , Nantes , France
| | - Bernard Humbert
- b Institut des Matériaux Jean Rouxel (IMN) , Université de Nantes, CNRS , Nantes , France
| | - Marie-Hélène Ropers
- a UR1268 BIA (Biopolymères Interactions Assemblages) , INRA , Nantes , France
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21
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Nanoassemblies based on non-ionic amphiphilic cyclodextrin hosting Zn(II)-phthalocyanine and docetaxel: Design, physicochemical properties and intracellular effects. Colloids Surf B Biointerfaces 2016; 146:590-7. [DOI: 10.1016/j.colsurfb.2016.06.047] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Revised: 06/21/2016] [Accepted: 06/27/2016] [Indexed: 01/08/2023]
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22
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Iwafuji Y, McNamee CE. Formation of Langmuir Monolayers of Titanium Dioxide Nanoparticles at Air/Aqueous Interfaces by the Addition of Ions to the Subphase: Effect of Ion Concentration and Type. J Phys Chem B 2015; 119:12308-17. [DOI: 10.1021/acs.jpcb.5b05728] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuya Iwafuji
- Department
of Chemistry and
Materials, Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan
| | - Cathy E. McNamee
- Department
of Chemistry and
Materials, Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan
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23
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Sakamaki H, Uchida T, Lim LW, Takeuchi T. Evaluation of column hardware on liquid chromatography–mass spectrometry of phosphorylated compounds. J Chromatogr A 2015; 1381:125-31. [DOI: 10.1016/j.chroma.2014.12.088] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 12/21/2014] [Accepted: 12/23/2014] [Indexed: 10/24/2022]
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