1
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Liu W, Wang X, Ren J, Zheng C, Wu H, Meng F, Ling K, Qi X, Zhou M, Wang Y, Gu R, Han L, Zhang Y. Preparation, characterization, identification, and antioxidant properties of fermented acaí (
Euterpe oleracea
). Food Sci Nutr 2023. [DOI: 10.1002/fsn3.3274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023] Open
Affiliation(s)
- Wen‐Ying Liu
- Engineering Laboratory for Agro Biomass Recycling & Valorizing College of Engineering, China Agricultural University Beijing People's Republic of China
| | - Xue Wang
- Heilongjiang Feihe Dairy Co., Ltd. Beijing People's Republic of China
| | - Jie Ren
- Beijing Engineering Research Center of Protein and Functional Peptides China National Research Institute of Food and Fermentation Industries Co., Ltd. Beijing People's Republic of China
| | - Cheng‐Dong Zheng
- Heilongjiang Feihe Dairy Co., Ltd. Beijing People's Republic of China
| | - Han‐Shuo Wu
- Beijing Engineering Research Center of Protein and Functional Peptides China National Research Institute of Food and Fermentation Industries Co., Ltd. Beijing People's Republic of China
| | - Fan‐Tong Meng
- Heilongjiang Feihe Dairy Co., Ltd. Beijing People's Republic of China
| | - Kong Ling
- Beijing Engineering Research Center of Protein and Functional Peptides China National Research Institute of Food and Fermentation Industries Co., Ltd. Beijing People's Republic of China
| | - Xiu‐Yu Qi
- Heilongjiang Feihe Dairy Co., Ltd. Beijing People's Republic of China
| | - Ming Zhou
- Beijing Engineering Research Center of Protein and Functional Peptides China National Research Institute of Food and Fermentation Industries Co., Ltd. Beijing People's Republic of China
| | - Yue Wang
- Heilongjiang Feihe Dairy Co., Ltd. Beijing People's Republic of China
| | - Rui‐Zeng Gu
- Beijing Engineering Research Center of Protein and Functional Peptides China National Research Institute of Food and Fermentation Industries Co., Ltd. Beijing People's Republic of China
| | - Lu‐Jia Han
- Engineering Laboratory for Agro Biomass Recycling & Valorizing College of Engineering, China Agricultural University Beijing People's Republic of China
| | - Yong‐Jiu Zhang
- Heilongjiang Feihe Dairy Co., Ltd. Beijing People's Republic of China
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2
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Wang D, Qi B, Xu Q, Zhang S, Xie F, Li Y. Effect of salt ions on an ultrasonically modified soybean lipophilic protein nanoemulsion. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.15261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Diqiong Wang
- College of Food Science Northeast Agricultural University Harbin Heilongjiang 150030 China
| | - Baokun Qi
- College of Food Science Northeast Agricultural University Harbin Heilongjiang 150030 China
| | - Qingqing Xu
- College of Food Science Northeast Agricultural University Harbin Heilongjiang 150030 China
| | - Shuang Zhang
- College of Food Science Northeast Agricultural University Harbin Heilongjiang 150030 China
| | - Fengying Xie
- College of Food Science Northeast Agricultural University Harbin Heilongjiang 150030 China
| | - Yang Li
- College of Food Science Northeast Agricultural University Harbin Heilongjiang 150030 China
- Heilongjiang Institute of Green Food Science Harbin Heilongjiang 150030 China
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3
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Cao H, Sun R, Shi J, Li M, Guan X, Liu J, Huang K, Zhang Y. Effect of ultrasonic on the structure and quality characteristics of quinoa protein oxidation aggregates. ULTRASONICS SONOCHEMISTRY 2021; 77:105685. [PMID: 34364069 PMCID: PMC8350374 DOI: 10.1016/j.ultsonch.2021.105685] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 07/13/2021] [Accepted: 07/21/2021] [Indexed: 05/06/2023]
Abstract
Protein oxidation leads to covalent modification of structure and deterioration of functional properties of quinoa protein. The objective of this study was to investigate the effects of ultrasonic treatment on the functional and physicochemical properties of quinoa protein oxidation aggregates. In this concern, 2,2'-azobis (2-amidinopropane) dihydrochloride (AAPH) was selected as oxidative modification of quinoa protein. The microstructure of quinoa protein displayed by scanning electron microscope (SEM) indicated that oxidation induced extensive aggregation, leading to carbonylation and degradation of sulfhydryl groups. Aggregation induced by oxidation had a negative effect on the solubility, turbidity, emulsifying stability. However, according to the analysis of physicochemical properties, ultrasonic significantly improved the water solubility of quinoa protein. The quinoa protein treated by ultrasonic for 30 min exhibited the best dispersion stability in water, which corresponded to the highest ζ-potential, smallest particle size and most uniform distribution. Based on the FT-IR, SDS-PAGE and surface hydrophobicity analysis, the increase of α-helix, β-turn and surface hydrophobicity caused by cavitation effect appeared to be the main mechanism of quinoa protein solubilization. In addition, the hydrophobic region of the protein was re-buried by excessive ultrasonic treatment, and the protein molecules were reaggregated by disulfide bonds. Microstructural observations further confirmed that ultrasonic treatment effectively inhibited protein aggregation and improved the functional properties of quinoa protein.
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Affiliation(s)
- Hongwei Cao
- School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, PR China; Innovation Center of National Grain, University of Shanghai for Science and Technology, Shanghai, PR China
| | - Rulian Sun
- School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, PR China
| | - Junru Shi
- School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, PR China
| | - Mengyao Li
- School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, PR China
| | - Xiao Guan
- School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, PR China; Innovation Center of National Grain, University of Shanghai for Science and Technology, Shanghai, PR China.
| | - Jing Liu
- College of Information Engineering, Shanghai Maritime University, Shanghai, PR China
| | - Kai Huang
- School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, PR China
| | - Yu Zhang
- School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, PR China
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4
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Effects of pH on ultrasonic-modified soybean lipophilic protein nanoemulsions with encapsulated vitamin E. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111240] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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5
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Webby MN, Sullivan MP, Yegambaram KM, Radjainia M, Keown JR, Kingston RL. A method for analyzing the composition of viral nucleoprotein complexes, produced by heterologous expression in bacteria. Virology 2018; 527:159-168. [PMID: 30529564 DOI: 10.1016/j.virol.2018.11.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 10/23/2018] [Accepted: 11/22/2018] [Indexed: 12/27/2022]
Abstract
Viral genomes are protected and organized by virally encoded packaging proteins. Heterologous production of these proteins often results in formation of particles resembling the authentic viral capsid or nucleocapsid, with cellular nucleic acids packaged in place of the viral genome. Quantifying the total protein and nucleic acid content of particle preparations is a recurrent biochemical problem. We describe a method for resolving this problem, developed when characterizing particles resembling the Menangle Virus nucleocapsid. The protein content was quantified using the biuret assay, which is largely independent of amino acid composition. Bound nucleic acids were quantified by determining the phosphorus content, using inductively coupled plasma mass spectrometry. Estimates for the amount of RNA packaged within the particles were consistent with the structurally-characterized packaging mechanism. For a bacterially-produced nucleoprotein complex, phosphorus usually provides a unique elemental marker of bound nucleic acids, hence this method of analysis should be routinely applicable.
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Affiliation(s)
- Melissa N Webby
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Matthew P Sullivan
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | | | - Mazdak Radjainia
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Jeremy R Keown
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Richard L Kingston
- School of Biological Sciences, University of Auckland, Auckland, New Zealand.
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6
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Chaves R, Dahmane S, Odorico M, Nicolaes G, Pellequer JL. Factor Va alternative conformation reconstruction using atomic force microscopy. Thromb Haemost 2017; 112:1167-73. [DOI: 10.1160/th14-06-0481] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 07/15/2014] [Indexed: 01/15/2023]
Abstract
SummaryProtein conformational variability (or dynamics) for large macromolecules and its implication for their biological function attracts more and more attention. Collective motions of domains increase the ability of a protein to bind to partner molecules. Using atomic force microscopy (AFM) topographic images, it is possible to take snapshots of large multi-component macromolecules at the single molecule level and to reconstruct complete molecular conformations. Here, we report the application of a reconstruction protocol, named AFM-assembly, to characterise the conformational variability of the two C domains of human coagulation factor Va (FVa). Using AFM topographic surfaces obtained in liquid environment, it is shown that the angle between C1 and C2 domains of FVa can vary between 40° and 166°. Such dynamical variation in C1 and C2 domain arrangement may have important implications regarding the binding of FVa to phospholipid membranes.
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7
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Huang L, Ding X, Dai C, Ma H. Changes in the structure and dissociation of soybean protein isolate induced by ultrasound-assisted acid pretreatment. Food Chem 2017; 232:727-732. [DOI: 10.1016/j.foodchem.2017.04.077] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 04/07/2017] [Accepted: 04/12/2017] [Indexed: 10/19/2022]
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8
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Laskowski PR, Pfreundschuh M, Stauffer M, Ucurum Z, Fotiadis D, Müller DJ. High-Resolution Imaging and Multiparametric Characterization of Native Membranes by Combining Confocal Microscopy and an Atomic Force Microscopy-Based Toolbox. ACS NANO 2017; 11:8292-8301. [PMID: 28745869 DOI: 10.1021/acsnano.7b03456] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
To understand how membrane proteins function requires characterizing their structure, assembly, and inter- and intramolecular interactions in physiologically relevant conditions. Conventionally, such multiparametric insight is revealed by applying different biophysical methods. Here we introduce the combination of confocal microscopy, force-distance curve-based (FD-based) atomic force microscopy (AFM), and single-molecule force spectroscopy (SMFS) for the identification of native membranes and the subsequent multiparametric analysis of their membrane proteins. As a well-studied model system, we use native purple membrane from Halobacterium salinarum, whose membrane protein bacteriorhodopsin was His-tagged to bind nitrilotriacetate (NTA) ligands. First, by confocal microscopy we localize the extracellular and cytoplasmic surfaces of purple membrane. Then, we apply AFM to image single bacteriorhodopsins approaching sub-nanometer resolution. Afterwards, the binding of NTA ligands to bacteriorhodopsins is localized and quantified by FD-based AFM. Finally, we apply AFM-based SMFS to characterize the (un)folding of the membrane protein and to structurally map inter- and intramolecular interactions. The multimethodological approach is generally applicable to characterize biological membranes and membrane proteins at physiologically relevant conditions.
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Affiliation(s)
- Pawel R Laskowski
- Department of Biosystems Science and Engineering, ETH Zurich , 4058 Basel, Switzerland
| | - Moritz Pfreundschuh
- Department of Biosystems Science and Engineering, ETH Zurich , 4058 Basel, Switzerland
| | - Mirko Stauffer
- Institute of Biochemistry and Molecular Medicine, University of Bern , 3012 Bern, Switzerland
| | - Zöhre Ucurum
- Institute of Biochemistry and Molecular Medicine, University of Bern , 3012 Bern, Switzerland
| | - Dimitrios Fotiadis
- Institute of Biochemistry and Molecular Medicine, University of Bern , 3012 Bern, Switzerland
| | - Daniel J Müller
- Department of Biosystems Science and Engineering, ETH Zurich , 4058 Basel, Switzerland
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9
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Modification of gel properties of soy protein isolate by freeze-thaw cycles are associated with changes of molecular force involved in the gelation. Process Biochem 2017. [DOI: 10.1016/j.procbio.2016.09.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Overview of chemical imaging methods to address biological questions. Micron 2016; 84:23-36. [DOI: 10.1016/j.micron.2016.02.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 01/24/2016] [Accepted: 02/08/2016] [Indexed: 11/23/2022]
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11
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Xie Y, Wang J, Feng Y. Characterization of Recognition Events between Proteins on a Single Molecule Level with Atomic Force Microscopy. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.5b03922] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yang Xie
- Key
Laboratory of Biorheological Science and Technology, Ministry of Education
College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Jianhua Wang
- Key
Laboratory of Biorheological Science and Technology, Ministry of Education
College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Yonglai Feng
- Exposure and Biomonitoring
Division, Environmental Health Science and Research Bureau, Health
Canada, Ottawa, Ontario K1A 0K9, Canada
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12
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Studying RNAP–promoter interactions using atomic force microscopy. Methods 2015; 86:4-9. [DOI: 10.1016/j.ymeth.2015.05.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 05/15/2015] [Accepted: 05/18/2015] [Indexed: 01/02/2023] Open
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13
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Wohlgemuth I, Lenz C, Urlaub H. Studying macromolecular complex stoichiometries by peptide-based mass spectrometry. Proteomics 2015; 15:862-79. [PMID: 25546807 PMCID: PMC5024058 DOI: 10.1002/pmic.201400466] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 11/24/2014] [Accepted: 12/22/2014] [Indexed: 11/11/2022]
Abstract
A majority of cellular functions are carried out by macromolecular complexes. A host of biochemical and spectroscopic methods exists to characterize especially protein/protein complexes, however there has been a lack of a universal method to determine protein stoichiometries. Peptide‐based MS, especially as a complementary method to the MS analysis of intact protein complexes, has now been developed to a point where it can be employed to assay protein stoichiometries in a routine manner. While the experimental demands are still significant, peptide‐based MS has been successfully applied to analyze stoichiometries for a variety of protein complexes from very different biological backgrounds. In this review, we discuss the requirements especially for targeted MS acquisition strategies to be used in this context, with a special focus on the interconnected experimental aspects of sample preparation, protein digestion, and peptide stability. In addition, different strategies for the introduction of quantitative peptide standards and their suitability for different scenarios are compared.
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Affiliation(s)
- Ingo Wohlgemuth
- Department of Physical Biochemistry, Max Planck Institute for Biophysical Chemistry, Goettingen, Germany
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14
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Li R, Wang Y, Hu W, Liao X. Changes in the activity, dissociation, aggregation, and the secondary and tertiary structures of a thaumatin-like protein with a high polyphenol oxidase activity induced by high pressure CO2. INNOV FOOD SCI EMERG 2014. [DOI: 10.1016/j.ifset.2014.02.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Cross TA, Murray DT, Watts A. Helical membrane protein conformations and their environment. EUROPEAN BIOPHYSICS JOURNAL : EBJ 2013; 42:731-55. [PMID: 23996195 PMCID: PMC3818118 DOI: 10.1007/s00249-013-0925-x] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 07/25/2013] [Accepted: 08/12/2013] [Indexed: 02/02/2023]
Abstract
Evidence that membrane proteins respond conformationally and functionally to their environment is growing. Structural models, by necessity, have been characterized in preparations where the protein has been removed from its native environment. Different structural methods have used various membrane mimetics that have recently included lipid bilayers as a more native-like environment. Structural tools applied to lipid bilayer-embedded integral proteins are informing us about important generic characteristics of how membrane proteins respond to the lipid environment as compared with their response to other nonlipid environments. Here, we review the current status of the field, with specific reference to observations of some well-studied α-helical membrane proteins, as a starting point to aid the development of possible generic principles for model refinement.
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Affiliation(s)
- Timothy A. Cross
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306, USA
- Institute of Molecular Biophysics, Florida State University, Tallahassee, FL 32306, USA
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, USA
| | - Dylan T. Murray
- Institute of Molecular Biophysics, Florida State University, Tallahassee, FL 32306, USA
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, USA
| | - Anthony Watts
- Biomembrane structure Unit, Biochemistry Department, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
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16
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Andolfi L, Trevisan E, Zweyer M, Prato S, Troian B, Vita F, Borelli V, Soranzo MR, Melato M, Zabucchi G. The crocidolite fibres interaction with human mesothelial cells as investigated by combining electron microscopy, atomic force and scanning near-field optical microscopy. J Microsc 2013; 249:173-83. [PMID: 23305229 DOI: 10.1111/jmi.12006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this study, we have performed a morphological analysis of crocidolite fibres interaction with mesothelial cells (MET5A) by combining conventional electron microscopy with atomic force (AFM) and scanning near-field optical microscopy (SNOM). After 6-h exposure at a crocidolite dose of 5 μg cm(-2), 90% of MET5A cells interact with fibres that under these conditions have a low cytotoxic effect. SEM images point out that fibres can be either engulfed by the cells that lose their typical morphology or they can accumulate over or partially inside the cells, which preserve their typical spread morphology. By using AFM we are able to directly visualize the entry-site of nanometric-sized fibres at the plasma membrane of the spread mesothelial cells. More importantly, the crocidolite fibres that are observed to penetrate the plasma membrane in SNOM topography can be simultaneously followed beneath the cell surface in the SNOM optical images. The analysis of SNOM data demonstrates the entrance of crocidolite fibres in proximity of nuclear compartment, as observed also in the TEM images. Our findings indicate that the combination of conventional electron microscopy with novel nanoscopic techniques can be considered a promising approach to achieve a comprehensive morphological description of the interaction between asbestos fibres and mesothelial cells that represents the early event in fibre pathogenesis.
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Affiliation(s)
- Laura Andolfi
- Clinical Department of Medical, Chirurgical and Healthy Science, University of Trieste, Trieste 34127, Italy
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17
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Kim LY, Johnson MC, Schmidt‐Krey I. Cryo‐EM in the Study of Membrane Transport Proteins. Compr Physiol 2012; 2:283-93. [DOI: 10.1002/cphy.c110028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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18
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Gallyamov MO. Scanning Force Microscopy as Applied to Conformational Studies in Macromolecular Research. Macromol Rapid Commun 2011; 32:1210-46. [DOI: 10.1002/marc.201100150] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Revised: 04/06/2011] [Indexed: 01/17/2023]
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19
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Massover WH. Introduction to Special Issue of Micron: "Biological specimen preparation and preservation for high resolution microscopies". Micron 2010; 42:97-9. [PMID: 20888777 DOI: 10.1016/j.micron.2010.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2010] [Accepted: 08/30/2010] [Indexed: 11/16/2022]
Affiliation(s)
- William H Massover
- Electron Microscopy Center, Materials Science Division, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, USA.
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