1
|
Wu SY, Hung YC, Chou CC, Chen C, Cheng CM, Chen C, Liou JC, Hsu MY. Isolation of three different sizes of exosomes in an Asian population with different retinal diseases before and after treatment: preliminary results. Bioengineered 2024; 15:2297320. [PMID: 38155415 PMCID: PMC10761085 DOI: 10.1080/21655979.2023.2297320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 11/04/2023] [Indexed: 12/30/2023] Open
Abstract
Exosomes are membranous structures measuring between 40-120 nm that are secreted by various cells of the human body into the body fluid system. Exosomes contain proteins, mRNA, miRNA, and signaling molecules, and physiologically they assist in the intercellular transport of proteins and RNA molecules. In this study, we used an immunoaffinity filter paper platform combined with scanning electron microscopy and microfluidic systems to detect the size of exosomes within the aqueous humor. Eight aqueous humor samples showed three distinct sizes of exosomes that were significantly different on scanning electron microscopy(P < 0.01). We further used nanoparticle tracking analysis to assess the size distribution of exosomes within the aqueous humor. We found significantly different distributions of exosomes between patients with three different ocular diseases and patients with normal cataracts as controls. An obvious peak of exomeres(size around 35 nm)was found in the patients with central retinal vein occlusion and vitreous hemorrhage. Flare-ups of large exosomes(size 90-120 nm)were found in the patients with the inflammatory ocular disease pars planitis. No obvious peaks in exomeres or large exosomes were found in the control group. There was a high association between the distribution of exosomes and the pathogenesis of ocular diseases. After intravitreal anti-vascular endothelial growth factor treatment, the aqueous humor from the patients with neovascular diseases showed a significant reduction in exosomes in nanoparticle tracking analysis. These findings suggest that at least three distinct sizes of exosomes exist in the aqueous humor:(1)exomeres:<35 nm;(2)small exosomes:60-80 nm; and (3)large exosomes:90-120 nm. Different sizes of exosomes may have different implications in normal or diseased eyes.
Collapse
Affiliation(s)
- Sung-Yu Wu
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Ophthalmology, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Yu-Chien Hung
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Ophthalmology, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Chien-Chih Chou
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
- Department of Ophthalmology, Taichung Veterans General Hospital, Taichung, Taiwan
- School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Connie Chen
- Department of Ophthalmology, Chung Shan Medical University Hospital, Taichung, Taiwan
- Department of Optometry, Chung Shan Medical University, Taichung, Taiwan
- Institute of Optometry, Chung Shan Medical University, Taichung, Taiwan
| | - Chao-Min Cheng
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Chihchen Chen
- Institute of Nanoengineering and Microsystem, National Tsing Hua University, Hsinchu, Taiwan
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Jyh-Cheng Liou
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Ophthalmology, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Min-Yen Hsu
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Ophthalmology, Chung Shan Medical University Hospital, Taichung, Taiwan
| |
Collapse
|
2
|
Bewernitz MA, Ginder-Vogel M, Wolf SE, Seto J, Constantz BR. A bicarbonate-rich liquid condensed phase in non-saturated solutions in the absence of divalent cations. Front Bioeng Biotechnol 2024; 12:1382047. [PMID: 38745842 PMCID: PMC11091711 DOI: 10.3389/fbioe.2024.1382047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 04/02/2024] [Indexed: 05/16/2024] Open
Abstract
Bicarbonate (HCO3 -) and sodium (Na+)-containing solutions contain droplets of a separate, bicarbonate-rich liquid condensed phase (LCP) that have higher concentrations of HCO3 - relative to the bulk solution in which they reside. The existence and composition of the LCP droplets has been investigated by nanoparticle tracking analysis, nuclear magnetic resonance spectroscopy, refractive index measurements and X-ray pair distribution function analysis. The bicarbonate-rich LCP species is a previously unaccounted-for, ionic phenomenon which occurs even in solutions with solely monovalent cations. Its existence requires re-evaluation of models used to describe and model aqueous solution physicochemistry, especially those used to describe and model carbonate mineral formation.
Collapse
Affiliation(s)
- Mark A. Bewernitz
- Physical Sciences Department, College of Arts and Sciences, Embry-Riddle Aeronautical University, Daytona Beach, FL, United States
| | - Matthew Ginder-Vogel
- Environmental Chemistry and Technology Program, Department of Civil and Environmental Engineering, University of Wisconsin—Madison, Madison, WI, United States
| | - Stephan E. Wolf
- Department of Materials Science and Engineering, Institute of Glass and Ceramics, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Erlangen, Germany
- Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Jong Seto
- Center for Biological Physics and School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ, United States
| | - Brent R. Constantz
- Physical Sciences Department, College of Arts and Sciences, Embry-Riddle Aeronautical University, Daytona Beach, FL, United States
- Blue Planet, Ltd., Los Gatos, CA, United States
| |
Collapse
|
3
|
Kosutova N, Lorencova L, Hires M, Jane E, Orovcik L, Kollar J, Kozics K, Gabelova A, Ukraintsev E, Rezek B, Kasak P, Cernocka H, Ostatna V, Blahutova J, Vikartovska A, Bertok T, Tkac J. Negative Charge-Carrying Glycans Attached to Exosomes as Novel Liquid Biopsy Marker. Sensors (Basel) 2024; 24:1128. [PMID: 38400284 PMCID: PMC10892626 DOI: 10.3390/s24041128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/02/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024]
Abstract
Prostate cancer (PCa) is the second most common cancer. In this paper, the isolation and properties of exosomes as potential novel liquid biopsy markers for early PCa liquid biopsy diagnosis are investigated using two prostate human cell lines, i.e., benign (control) cell line RWPE1 and carcinoma cell line 22Rv1. Exosomes produced by both cell lines are characterised by various methods including nanoparticle-tracking analysis, dynamic light scattering, scanning electron microscopy and atomic force microscopy. In addition, surface plasmon resonance (SPR) is used to study three different receptors on the exosomal surface (CD63, CD81 and prostate-specific membrane antigen-PMSA), implementing monoclonal antibodies and identifying the type of glycans present on the surface of exosomes using lectins (glycan-recognising proteins). Electrochemical analysis is used to understand the interfacial properties of exosomes. The results indicate that cancerous exosomes are smaller, are produced at higher concentrations, and exhibit more nega tive zeta potential than the control exosomes. The SPR experiments confirm that negatively charged α-2,3- and α-2,6-sialic acid-containing glycans are found in greater abundance on carcinoma exosomes, whereas bisecting and branched glycans are more abundant in the control exosomes. The SPR results also show that a sandwich antibody/exosomes/lectins configuration could be constructed for effective glycoprofiling of exosomes as a novel liquid biopsy marker.
Collapse
Affiliation(s)
- Natalia Kosutova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| | - Lenka Lorencova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| | - Michal Hires
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| | - Eduard Jane
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| | - Lubomir Orovcik
- Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Dubravska cesta 9/6319, 845 13 Bratislava, Slovakia
| | - Jozef Kollar
- Polymer Institute, Slovak Academy of Sciences, Dubravska cesta 9, 845 41 Bratislava, Slovakia
| | - Katarina Kozics
- Biomedical Research Centre, Slovak Academy of Sciences, Dubravska cesta 9, 845 05 Bratislava, Slovakia (A.G.)
| | - Alena Gabelova
- Biomedical Research Centre, Slovak Academy of Sciences, Dubravska cesta 9, 845 05 Bratislava, Slovakia (A.G.)
| | - Egor Ukraintsev
- Department of Physics, Faculty of Electrical Engineering, Czech Technical University in Prague, Technicka 2, 166 27 Prague, Czech Republic; (E.U.); (B.R.)
| | - Bohuslav Rezek
- Department of Physics, Faculty of Electrical Engineering, Czech Technical University in Prague, Technicka 2, 166 27 Prague, Czech Republic; (E.U.); (B.R.)
| | - Peter Kasak
- Centre for Advanced Materials, Qatar University, Doha P.O. Box 2713, Qatar;
| | - Hana Cernocka
- Institute of Biophysics, Czech Academy of Sciences, Kralovopolska 135, 61200 Brno, Czech Republic; (H.C.)
| | - Veronika Ostatna
- Institute of Biophysics, Czech Academy of Sciences, Kralovopolska 135, 61200 Brno, Czech Republic; (H.C.)
| | - Jana Blahutova
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| | - Alica Vikartovska
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| | - Tomas Bertok
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| | - Jan Tkac
- Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 5807/9, 845 38 Bratislava, Slovakia (L.L.); (E.J.)
| |
Collapse
|
4
|
Mosby CA, Perez Devia N, Jones MK. Comparison of Methods for Quantifying Extracellular Vesicles of Gram-Negative Bacteria. Int J Mol Sci 2023; 24:15096. [PMID: 37894776 PMCID: PMC10606555 DOI: 10.3390/ijms242015096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 10/04/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
There are a variety of methods employed by laboratories for quantifying extracellular vesicles isolated from bacteria. As a result, the ability to compare results across published studies can lead to questions regarding the suitability of methods and buffers for accurately quantifying these vesicles. Within the literature, there are several common methods for vesicle quantification. These include lipid quantification using the lipophilic dye FM 4-64, protein quantification using microBCA, Qubit, and NanoOrange assays, or direct vesicle enumeration using nanoparticle tracking analysis. In addition, various diluents and lysis buffers are also used to resuspend and treat vesicles. In this study, we directly compared the quantification of a bacterial outer membrane vesicle using several commonly used methods. We also tested the impact of different buffers, buffer age, lysis method, and vesicle diluent on vesicle quantification. The results showed that buffer age had no significant effect on vesicle quantification, but the lysis method impacted the reliability of measurements using Qubit and NanoOrange. The microBCA assay displayed the least variability in protein concentration values and was the most consistent, regardless of the buffer or diluent used. MicroBCA also demonstrated the strongest correlation to the NTA-determined particle number across a range of vesicle concentrations. Overall, these results indicate that with appropriate diluent and buffer choice, microBCA vs. NTA standard curves could be generated and the microBCA assay used to estimate the particle number when NTA instrumentation is not readily available.
Collapse
Affiliation(s)
| | | | - Melissa K. Jones
- Microbiology and Cell Science Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA; (C.A.M.); (N.P.D.)
| |
Collapse
|
5
|
Hwang JH, Tung JP, Harkin DG, Flower RL, Pecheniuk NM. Investigation of the effect of pre-analytical factors on particle concentration and size in cryoprecipitate using nanoparticle tracking analysis. Transfus Med 2023; 33:398-402. [PMID: 37483014 DOI: 10.1111/tme.12986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 06/15/2023] [Accepted: 07/12/2023] [Indexed: 07/25/2023]
Abstract
BACKGROUND Cryoprecipitate is used primarily to replenish fibrinogen levels in patients. Little is known about the presence of micro- or nano-sized particles in cryoprecipitate. Therefore, we aimed to quantify these particles and investigate some pre-analytical considerations. MATERIALS AND METHODS Particle concentration and size distribution were determined in 10 cryoprecipitate units by nanoparticle tracking analysis (NTA). The effects of freeze-thawing cryoprecipitate and 0.45 μm filtration with either regenerated cellulose (RC) or polytetrafluoroethylene (PTFE) filters before sample analysis were examined. RESULTS Neither the size nor concentration of particles were affected by two freeze/thaw cycles. PTFE filtration, but not RC filtration, significantly reduced particle mean and mode size compared to RC filtration and mode size compared to unfiltered cryoprecipitate. The 10 cryoprecipitate units had an average particle concentration of 2.50 × 1011 ± 1.10 × 1011 particles/mL, a mean particle size of 133.8 ± 7.5 nm and a mode particle size of 107.9 ± 11.1 nm. CONCLUSION This study demonstrated that preanalytical filtration of cryoprecipitate units using RC filters was suitable for NTA. An additional freeze/thaw cycle did not impact NTA parameters, suggesting that aliquoting cryoprecipitate units prior to laboratory investigations is suitable for downstream analyses.
Collapse
Affiliation(s)
- Ji Hui Hwang
- Queensland University of Technology, School of Biomedical Sciences, Faculty of Health, Brisbane, Queensland, Australia
- Research and Development, Australian Red Cross Lifeblood, Brisbane, Queensland, Australia
| | - John-Paul Tung
- Queensland University of Technology, School of Biomedical Sciences, Faculty of Health, Brisbane, Queensland, Australia
- Research and Development, Australian Red Cross Lifeblood, Brisbane, Queensland, Australia
- Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Damien G Harkin
- Queensland University of Technology, School of Biomedical Sciences, Faculty of Health, Brisbane, Queensland, Australia
- Research and Development, Australian Red Cross Lifeblood, Brisbane, Queensland, Australia
| | - Robert L Flower
- Queensland University of Technology, School of Biomedical Sciences, Faculty of Health, Brisbane, Queensland, Australia
- Research and Development, Australian Red Cross Lifeblood, Brisbane, Queensland, Australia
| | - Natalie M Pecheniuk
- Queensland University of Technology, School of Biomedical Sciences, Faculty of Health, Brisbane, Queensland, Australia
- Research and Development, Australian Red Cross Lifeblood, Brisbane, Queensland, Australia
| |
Collapse
|
6
|
Janda M, Rybak K, Krassini L, Meng C, Feitosa-Junior O, Stigliano E, Szulc B, Sklenar J, Menke FL, Malone JG, Brachmann A, Klingl A, Ludwig C, Robatzek S. Biophysical and proteomic analyses of Pseudomonas syringae pv. tomato DC3000 extracellular vesicles suggest adaptive functions during plant infection. mBio 2023; 14:e0358922. [PMID: 37366628 PMCID: PMC10470744 DOI: 10.1128/mbio.03589-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 05/03/2023] [Indexed: 06/28/2023] Open
Abstract
Vesiculation is a process employed by Gram-negative bacteria to release extracellular vesicles (EVs) into the environment. EVs from pathogenic bacteria play functions in host immune modulation, elimination of host defenses, and acquisition of nutrients from the host. Here, we observed EV production of the bacterial speck disease causal agent, Pseudomonas syringae pv. tomato (Pto) DC3000, as outer membrane vesicle release. Mass spectrometry identified 369 proteins enriched in Pto DC3000 EVs. The EV samples contained known immunomodulatory proteins and could induce plant immune responses mediated by bacterial flagellin. Having identified two biomarkers for EV detection, we provide evidence for Pto DC3000 releasing EVs during plant infection. Bioinformatic analysis of the EV-enriched proteins suggests a role for EVs in antibiotic defense and iron acquisition. Thus, our data provide insights into the strategies this pathogen may use to develop in a plant environment. IMPORTANCE The release of extracellular vesicles (EVs) into the environment is ubiquitous among bacteria. Vesiculation has been recognized as an important mechanism of bacterial pathogenesis and human disease but is poorly understood in phytopathogenic bacteria. Our research addresses the role of bacterial EVs in plant infection. In this work, we show that the causal agent of bacterial speck disease, Pseudomonas syringae pv. tomato, produces EVs during plant infection. Our data suggest that EVs may help the bacteria to adapt to environments, e.g., when iron could be limiting such as the plant apoplast, laying the foundation for studying the factors that phytopathogenic bacteria use to thrive in the plant environment.
Collapse
Affiliation(s)
- Martin Janda
- LMU Munich Biocenter, Ludwig-Maximilian-University of Munich, Munich, Germany
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Prague, Czechia
- Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
| | - Katarzyna Rybak
- LMU Munich Biocenter, Ludwig-Maximilian-University of Munich, Munich, Germany
| | - Laura Krassini
- LMU Munich Biocenter, Ludwig-Maximilian-University of Munich, Munich, Germany
| | - Chen Meng
- Bavarian Center for Biomolecular Mass Spectrometry (BayBioMS), Technical University of Munich, Gregor-Mendel-Strasse, Freising, United Kingdom
| | | | - Egidio Stigliano
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
- John Innes Centre, Norwich Research Park, Norwich, United Kingdom
| | - Beata Szulc
- LMU Munich Biocenter, Ludwig-Maximilian-University of Munich, Munich, Germany
| | - Jan Sklenar
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
| | - Frank L.H. Menke
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
| | - Jacob G. Malone
- John Innes Centre, Norwich Research Park, Norwich, United Kingdom
- University of East Anglia, Norwich Research Park, Norwich, United Kingdom
| | - Andreas Brachmann
- LMU Munich Biocenter, Ludwig-Maximilian-University of Munich, Munich, Germany
| | - Andreas Klingl
- LMU Munich Biocenter, Ludwig-Maximilian-University of Munich, Munich, Germany
| | - Christina Ludwig
- Bavarian Center for Biomolecular Mass Spectrometry (BayBioMS), Technical University of Munich, Gregor-Mendel-Strasse, Freising, United Kingdom
| | - Silke Robatzek
- LMU Munich Biocenter, Ludwig-Maximilian-University of Munich, Munich, Germany
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
| |
Collapse
|
7
|
Ortiz-Orruño U, Quidant R, van Hulst NF, Liebel M, Ortega Arroyo J. Simultaneous Sizing and Refractive Index Analysis of Heterogeneous Nanoparticle Suspensions. ACS Nano 2023; 17:221-229. [PMID: 36525614 PMCID: PMC9835976 DOI: 10.1021/acsnano.2c06883] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 12/13/2022] [Indexed: 05/25/2023]
Abstract
Rapid and reliable characterization of heterogeneous nanoparticle suspensions is a key technology across the nanosciences. Although approaches exist for homogeneous samples, they are often unsuitable for polydisperse suspensions, as particles of different sizes and compositions can lead to indistinguishable signals at the detector. Here, we introduce holographic nanoparticle tracking analysis, holoNTA, as a straightforward methodology that decouples size and material refractive index contributions. HoloNTA is applicable to any heterogeneous nanoparticle sample and has the sensitivity to measure the intrinsic heterogeneity of the sample. Specifically, we combined high dynamic range k-space imaging with holographic 3D single-particle tracking. This strategy enables long-term tracking by extending the imaging volume and delivers precise and accurate estimates of both scattering amplitude and diffusion coefficient of individual nanoparticles, from which particle refractive index and hydrodynamic size are determined. We specifically demonstrate, by simulations and experiments, that irrespective of localization uncertainty and size, the sizing sensitivity is improved as our extended detection volume yields considerably longer particle trajectories than previously reported by comparable technologies. As validation, we measured both homogeneous and heterogeneous suspensions of nanoparticles in the 40-250 nm size range and further monitored protein corona formation, where we identified subtle differences between the nanoparticle-protein complexes derived from avidin, bovine serum albumin, and streptavidin. We foresee that our approach will find many applications of both fundamental and applied nature where routine quantification and sizing of nanoparticles are required.
Collapse
Affiliation(s)
- Unai Ortiz-Orruño
- ICFO,
Institut de Ciencies Fotoniques, The Barcelona Institute of Science
and Technology, Castelldefels08860, Spain
| | - Romain Quidant
- Nanophotonic
Systems Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Zurich8092, Switzerland
| | - Niek F. van Hulst
- ICFO,
Institut de Ciencies Fotoniques, The Barcelona Institute of Science
and Technology, Castelldefels08860, Spain
- ICREA,
Institució Catalana de Recerca i Estudis Avançats, Barcelona08010, Spain
| | - Matz Liebel
- ICFO,
Institut de Ciencies Fotoniques, The Barcelona Institute of Science
and Technology, Castelldefels08860, Spain
| | - Jaime Ortega Arroyo
- Nanophotonic
Systems Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Zurich8092, Switzerland
| |
Collapse
|
8
|
Marques C, Maurizi L, Borchard G, Jordan O. Characterization Challenges of Self-Assembled Polymer-SPIONs Nanoparticles: Benefits of Orthogonal Methods. Int J Mol Sci 2022; 23. [PMID: 36555765 DOI: 10.3390/ijms232416124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/12/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Size and zeta potential are critical physicochemical properties of nanoparticles (NPs), influencing their biological activity and safety profile. These are essential for further industrial upscale and clinical success. However, the characterization of polydisperse, non-spherical NPs is a challenge for traditional characterization techniques (ex., dynamic light scattering (DLS)). In this paper, superparamagnetic iron oxide nanoparticles (SPIONs) were coated with polyvinyl alcohol (PVAL) exhibiting different terminal groups at their surface, either hydroxyl (OH), carboxyl (COOH) or amino (NH2) end groups. Size, zeta potential and concentration were characterized by orthogonal methods, namely, batch DLS, nanoparticle tracking analysis (NTA), tunable resistive pulse sensing (TRPS), transmission electron microscopy (TEM), asymmetric flow field flow fractionation (AF4) coupled to multi-angle light scattering (MALS), UV-Visible and online DLS. Finally, coated SPIONs were incubated with albumin, and size changes were monitored by AF4-MALS-UV-DLS. NTA showed the biggest mean sizes, even though DLS PVAL-COOH SPION graphs presented aggregates in the micrometer range. TRPS detected more NPs in suspension than NTA. Finally, AF4-MALS-UV-DLS could successfully resolve the different sizes of the coated SPION suspensions. The results highlight the importance of combining techniques with different principles for NPs characterization. The advantages and limitations of each method are discussed here.
Collapse
|
9
|
Romolo A, Jan Z, Bedina Zavec A, Kisovec M, Arrigler V, Spasovski V, Podobnik M, Iglič A, Pocsfalvi G, Kogej K, Kralj-Iglič V. Assessment of Small Cellular Particles from Four Different Natural Sources and Liposomes by Interferometric Light Microscopy. Int J Mol Sci 2022; 23. [PMID: 36555442 DOI: 10.3390/ijms232415801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/28/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022] Open
Abstract
Small particles in natural sources are a subject of interest for their potential role in intercellular, inter-organism, and inter-species interactions, but their harvesting and assessment present a challenge due to their small size and transient identity. We applied a recently developed interferometric light microscopy (ILM) to assess the number density and hydrodynamic radius (Rh) of isolated small cellular particles (SCPs) from blood preparations (plasma and washed erythrocytes) (B), spruce needle homogenate (S), suspension of flagellae of microalgae Tetraselmis chuii (T), conditioned culture media of microalgae Phaeodactylum tricornutum (P), and liposomes (L). The aliquots were also assessed by flow cytometry (FCM), dynamic light scattering (DLS), ultraviolet-visible spectrometry (UV-vis), and imaging by cryogenic transmission electron microscopy (cryo-TEM). In Rh, ILM showed agreement with DLS within the measurement error in 10 out of 13 samples and was the only method used here that yielded particle density. Cryo-TEM revealed that representative SCPs from Tetraselmis chuii flagella (T) did not have a globular shape, so the interpretation by Rh of the batch methods was biased. Cryo-TEM showed the presence of thin filaments in isolates from Phaeodactylum tricornutum conditioned culture media (P), which provides an explanation for the considerably larger Rh obtained by batch methods than the sizes of particles observed by cryo-TEM images. ILM proved convenient for assessment of number density and Rh of SCPs in blood preparations (e.g., plasma); therefore, its use in population and clinical studies is indicated.
Collapse
|
10
|
Langille E, Bottaro CS, Lang AS. Purification of Functional Gene Transfer Agents Using Two-Step Preparative Monolithic Chromatography. Phage (New Rochelle) 2022; 3:194-203. [PMID: 36793882 PMCID: PMC9917305 DOI: 10.1089/phage.2022.0035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Background Gene transfer agents (GTAs) are phage-like particles that transfer cellular genomic DNA between cells. A hurdle faced in studying GTA function and interactions with cells is the difficulty in obtaining pure and functional GTAs from cultures. Materials and Methods We used a novel two-step method for purification of GTAs from R. capsulatus by monolithic chromatography. Results Our efficient and simple process had advantages compared to previous approaches. The purified GTAs retained gene transfer activity and the packaged DNA could be used for further studies. Conclusions This method is applicable to GTAs produced by other species and small phages, and could be useful for therapeutic applications.
Collapse
Affiliation(s)
- Evan Langille
- Department of Chemistry and Memorial University of Newfoundland, St. John's, Canada
- Department of Biology, Memorial University of Newfoundland, St. John's, Canada
| | - Christina S. Bottaro
- Department of Chemistry and Memorial University of Newfoundland, St. John's, Canada
| | - Andrew S. Lang
- Department of Biology, Memorial University of Newfoundland, St. John's, Canada
| |
Collapse
|
11
|
Kim J, Förster R, Wieduwilt T, Jang B, Bürger J, Gargiulo J, de S Menezes L, Rossner C, Fery A, Maier SA, Schmidt MA. Locally Structured On-Chip Optofluidic Hollow-Core Light Cages for Single Nanoparticle Tracking. ACS Sens 2022; 7:2951-2959. [PMID: 36260351 DOI: 10.1021/acssensors.2c00988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Nanoparticle tracking analysis (NTA) is a widely used methodology to investigate nanoscale systems at the single species level. Here, we introduce the locally structured on-chip optofluidic hollow-core light cage, as a novel platform for waveguide-assisted NTA. This hollow waveguide guides light by the antiresonant effect in a sparse array of dielectric strands and includes a local modification to realize aberration-free tracking of individual nano-objects, defining a novel on-chip solution with properties specifically tailored for NTA. The key features of our system are (i) well-controlled nano-object illumination through the waveguide mode, (ii) diffraction-limited and aberration-free imaging at the observation site, and (iii) a high level of integration, achieved by on-chip interfacing to fibers. The present study covers all aspects relevant for NTA including design, simulation, implementation via 3D nanoprinting, and optical characterization. The capabilities of the approach to precisely characterize practically relevant nanosystems have been demonstrated by measuring the solvency-induced collapse of a nanoparticle system which includes polymer brush-based shells that react to changes in the liquid environment. Our study unlocks the advantages of the light cage approach in the context of NTA, suggesting its application in various areas such as bioanalytics, life science, environmental science, or nanoscale material science in general.
Collapse
Affiliation(s)
- Jisoo Kim
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745Jena, Germany.,Abbe Center of Photonics and Faculty of Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, 07743Jena, Germany
| | - Ronny Förster
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745Jena, Germany
| | - Torsten Wieduwilt
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745Jena, Germany
| | - Bumjoon Jang
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745Jena, Germany.,Abbe Center of Photonics and Faculty of Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, 07743Jena, Germany
| | - Johannes Bürger
- Chair in Hybrid Nanosystems, Nano Institute Munich, Ludwig-Maximilians-Universität Munich, 80799Munich, Germany
| | - Julian Gargiulo
- Chair in Hybrid Nanosystems, Nano Institute Munich, Ludwig-Maximilians-Universität Munich, 80799Munich, Germany
| | - Leonardo de S Menezes
- Chair in Hybrid Nanosystems, Nano Institute Munich, Ludwig-Maximilians-Universität Munich, 80799Munich, Germany.,Departamento de Física, Universidade Federal de Pernambuco, 50670-901Recife-PE, Brazil
| | - Christian Rossner
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069Dresden, Germany
| | - Andreas Fery
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069Dresden, Germany
| | - Stefan A Maier
- Chair in Hybrid Nanosystems, Nano Institute Munich, Ludwig-Maximilians-Universität Munich, 80799Munich, Germany.,The Blackett Laboratory, Department of Physics, Imperial College London, LondonSW7 2AZ, United Kingdom.,School of Physics and Astronomy, Monash University, Clayton, Victoria3800, Australia
| | - Markus A Schmidt
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745Jena, Germany.,Abbe Center of Photonics and Faculty of Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, 07743Jena, Germany.,Otto Schott Institute of Materials Research (OSIM), Friedrich Schiller University Jena, Fraunhoferstr. 6, 07743Jena, Germany
| |
Collapse
|
12
|
Moiseenko AV, Bagrov DV, Vorovitch MF, Uvarova VI, Veselov MM, Kashchenko AV, Ivanova AL, Osolodkin DI, Egorov AM, Ishmukhametov AA, Shaitan KV, Sokolova OS. Size Distribution of Inactivated Tick-Borne Encephalitis Virus Particles Revealed by a Comprehensive Physicochemical Approach. Biomedicines 2022; 10:biomedicines10102478. [PMID: 36289740 PMCID: PMC9598892 DOI: 10.3390/biomedicines10102478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/23/2022] [Accepted: 09/28/2022] [Indexed: 11/24/2022] Open
Abstract
Tick-borne encephalitis virus (TBEV) is an enveloped RNA virus, a member of the genus Flavivirus (family Flaviviridae). Here, we provide a detailed analysis of the size and structure of the inactivated TBEV vaccine strain Sofjin-Chumakov. Four analytical methods were used to analyze individual TBEV particles—negative staining TEM, cryo-EM, atomic force microscopy (AFM), and nanoparticle tracking analysis (NTA). All methods confirmed that the particles were monodisperse and that their mean size was ~50 nm. Cryo-EM data allowed us to obtain a 3D electron density model of the virus with clearly distinguishable E protein molecules. STEM-EELS analysis detected phosphorus in the particles, which was interpreted as an indicator of RNA presence. Altogether, the described analytical procedures can be valuable for the characterization of inactivated vaccine virus samples.
Collapse
Affiliation(s)
- Andrey V. Moiseenko
- Department of Biology, Lomonosov Moscow State University, Moscow 119234, Russia
| | - Dmitry V. Bagrov
- Department of Biology, Lomonosov Moscow State University, Moscow 119234, Russia
| | - Mikhail F. Vorovitch
- FSASI “Chumakov FSC R&D IBP RAS” (Institute of Poliomyelitis), Moscow 108819, Russia
- Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow 119991, Russia
| | - Victoria I. Uvarova
- FSASI “Chumakov FSC R&D IBP RAS” (Institute of Poliomyelitis), Moscow 108819, Russia
| | - Maxim M. Veselov
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119234, Russia
| | | | - Alla L. Ivanova
- FSASI “Chumakov FSC R&D IBP RAS” (Institute of Poliomyelitis), Moscow 108819, Russia
| | - Dmitry I. Osolodkin
- FSASI “Chumakov FSC R&D IBP RAS” (Institute of Poliomyelitis), Moscow 108819, Russia
- Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow 119991, Russia
| | - Alexey M. Egorov
- FSASI “Chumakov FSC R&D IBP RAS” (Institute of Poliomyelitis), Moscow 108819, Russia
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119234, Russia
| | - Aydar A. Ishmukhametov
- FSASI “Chumakov FSC R&D IBP RAS” (Institute of Poliomyelitis), Moscow 108819, Russia
- Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow 119991, Russia
| | | | - Olga S. Sokolova
- Faculty of Biology, MSU-BIT Shenzhen University, 1 International University Park Road, Dayun New Town, Longgang District, Shenzhen 518172, China
- Correspondence:
| |
Collapse
|
13
|
Maurya P, Saklani R, Singh S, Nisha R, Mishra N, Singh P, Pal RR, Kumar A, Chourasia MK, Saraf SA. Effective uptake of folate-functionalized ethionamide-loaded hybrid system: targeting alveolar macrophages. Nanomedicine (Lond) 2022; 17:1819-1831. [PMID: 36136373 DOI: 10.2217/nnm-2021-0468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Aim: To assess the targeting ability of hybrid nanosystems functionalized with folate. It also aimed to reduce stomach intolerance by substituting the oral route for parenteral delivery. Method: The nanosystems, prepared by nanoprecipitation technique, utilized a one-step method to prepare nanoparticles followed by surface functionalization through adsorption. The prepared nanosystems underwent physical characterization, in vitro and in vivo evaluations. Result: The nanosystems were effective in targeting the alveolar macrophages. Ethionamide was released from the formulation over 5 days. Fourier-transform infrared results proved the structural characteristics, and the positive charge further improved the targeting efficacy on the functionalized system. Conclusion: The hybrid formulation improved the release characteristics. Reduction in dosing frequency due to prolonged release improves compliance with the dosage regimen.
Collapse
Affiliation(s)
- Priyanka Maurya
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University (A Central University) Vidya Vihar, Lucknow, 226025, India
| | - Ravi Saklani
- Department of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Lucknow, 226031, India
| | - Samipta Singh
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University (A Central University) Vidya Vihar, Lucknow, 226025, India
| | - Raquibun Nisha
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University (A Central University) Vidya Vihar, Lucknow, 226025, India
| | - Nidhi Mishra
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University (A Central University) Vidya Vihar, Lucknow, 226025, India
| | - Priya Singh
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University (A Central University) Vidya Vihar, Lucknow, 226025, India
| | - Ravi Raj Pal
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University (A Central University) Vidya Vihar, Lucknow, 226025, India
| | - Abhiram Kumar
- Department of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Lucknow, 226031, India
| | - Manish K Chourasia
- Department of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Lucknow, 226031, India
| | - Shubhini A Saraf
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University (A Central University) Vidya Vihar, Lucknow, 226025, India
| |
Collapse
|
14
|
Abstract
Using reversed phase high-performance liquid chromatography with ultraviolet (UV) detection and electrospray ionization (ESI)-quadrupole time-of-flight mass spectrometry (RP-HPLC-UV-ESI-Q-TOF), the lysozyme content in the milk of 10 volunteering mothers was quantified, ranging from 29 to 96 μg/mL. Following ultracentifugation, it was found that the lysozyme in human milk, unlike other whey proteins, is mainly bound to casein micelles (ca. 75%). The enzymatic activity of human lysozyme, measured as lytic activity against cell walls of Micrococcus lysodeikticus, was similar for the micelle-bound and free protein, indicating that the micellar structure should not affect the antibacterial activity of lysozyme. The results indicate that lysozyme is an integral component of casein micelles in human milk.
Collapse
Affiliation(s)
- Mathias Jaeser
- Chair of Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Ulrike Moeckel
- Chair of Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Kati Weigel
- Chair of Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Thomas Henle
- Chair of Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| |
Collapse
|
15
|
Bellini S, Saraceno C, Benussi L, Squitti R, Cimini S, Ricci M, Canafoglia L, Coppola C, Puoti G, Ferrari C, Longobardi A, Nicsanu R, Lombardi M, D'Arrigo G, Verderio C, Binetti G, Rossi G, Ghidoni R. Plasma Small Extracellular Vesicles with Complement Alterations in GRN/ C9orf72 and Sporadic Frontotemporal Lobar Degeneration. Cells 2022; 11:488. [PMID: 35159297 DOI: 10.3390/cells11030488] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/21/2022] [Accepted: 01/27/2022] [Indexed: 02/01/2023] Open
Abstract
Cutting-edge research suggests endosomal/immune dysregulation in GRN/C9orf72-associated frontotemporal lobar degeneration (FTLD). In this retrospective study, we investigated plasma small extracellular vesicles (sEVs) and complement proteins in 172 subjects (40 Sporadic FTLD, 40 Intermediate/Pathological C9orf72 expansion carriers, and 49 Heterozygous/Homozygous GRN mutation carriers, 43 controls). Plasma sEVs (concentration, size) were analyzed by nanoparticle tracking analysis; plasma and sEVs C1q, C4, C3 proteins were quantified by multiplex assay. We demonstrated that genetic/sporadic FTLD share lower sEV concentrations and higher sEV sizes. The diagnostic performance of the two most predictive variables (sEV concentration/size ratio) was high (AUC = 0.91, sensitivity 85.3%, specificity 81.4%). C1q, C4, and C3 cargo per sEV is increased in genetic and sporadic FTLD. C4 (cargo per sEV, total sEV concentration) is increased in Sporadic FTLD and reduced in GRN+ Homozygous, suggesting its specific unbalance compared with Heterozygous cases. C3 plasma level was increased in genetic vs. sporadic FTLD. Looking at complement protein compartmentalization, in control subjects, the C3 and C4 sEV concentrations were roughly half that in respect to those measured in plasma; interestingly, this compartmentalization was altered in different ways in patients. These results suggest sEVs and complement proteins as potential therapeutic targets to mitigate neurodegeneration in FTLD.
Collapse
|
16
|
Droste M, Tertel T, Jeruschke S, Dittrich R, Kontopoulou E, Walkenfort B, Börger V, Hoyer PF, Büscher AK, Thakur BK, Giebel B. Single Extracellular Vesicle Analysis Performed by Imaging Flow Cytometry and Nanoparticle Tracking Analysis Evaluate the Accuracy of Urinary Extracellular Vesicle Preparation Techniques Differently. Int J Mol Sci 2021; 22:12436. [PMID: 34830318 DOI: 10.3390/ijms222212436] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/08/2021] [Accepted: 11/12/2021] [Indexed: 12/15/2022] Open
Abstract
Small extracellular vesicles isolated from urine (uEVs) are increasingly recognized as potential biomarkers. Meanwhile, different uEV preparation strategies exist. Conventionally, the performance of EV preparation methods is evaluated by single particle quantification, Western blot, and electron microscopy. Recently, we introduced imaging flow cytometry (IFCM) as a next-generation single EV analysis technology. Here, we analyzed uEV samples obtained with different preparation procedures using nanoparticle tracking analysis (NTA), semiquantitative Western blot, and IFCM. IFCM analyses demonstrated that urine contains a predominant CD9+ sEV population, which exceeds CD63+ and CD81+ sEV populations. Furthermore, we demonstrated that the storage temperature of urine samples negatively affects the recovery of CD9+ sEVs. Although overall reduced, the highest CD9+ sEV recovery was obtained from urine samples stored at −80 °C and the lowest from those stored at −20 °C. Upon comparing the yield of the different uEV preparations, incongruencies between NTA and IFCM data became apparent. Results obtained by both NTA and IFCM were consistent with Western blot analyses for EV marker proteins; however, NTA results correlated with the amount of the impurity marker uromodulin. Despite demonstrating that the combination of ultrafiltration and size exclusion chromatography appears as a reliable uEV preparation technique, our data challenge the soundness of traditional NTA for the evaluation of different EV preparation methods.
Collapse
|
17
|
Yahata S, Hirose M, Ueno T, Nagumo H, Sakai-Kato K. Effect of Sample Concentration on Nanoparticle Tracking Analysis of Small Extracellular Vesicles and Liposomes Mimicking the Physicochemical Properties of Exosomes. Chem Pharm Bull (Tokyo) 2021; 69:1045-1053. [PMID: 34719585 DOI: 10.1248/cpb.c21-00452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
For quantitative analysis, data should be obtained at a sample concentration that is within the range of linearity. We examined the effect of sample concentration on nanoparticle tracking analysis (NTA) of small extracellular vesicles (sEVs), including exosomes, by comparing NTA results of sEVs with those obtained for polystyrene nanoparticles (PSN) and liposomes, which mimic lipid composition and physicochemical properties of exosomes. Initially, NTA of PSN at different concentrations was performed and the particle sizes determined were validated by dynamic light scattering. The major peak maxima for PSN mixtures of different sizes at the higher particle numbers were similar, with some fluctuation of the minor peak maxima observed at the lower particle number, which was also observed for sEVs. Sample concentration is critical for obtaining reproducible data for liposomes and exosomes and increasing the sample concentration caused an increase in data variability because of particle interactions. The inter-day repeatability of particles sizes and concentration for sEVs were 7.47 and 4.51%, respectively. Analysis of the linearity range revealed that this was narrower for sEVs when compared with that of liposomes. Owing to the use of liposomes that mimic the lipid composition and physicochemical properties of exosomes and proteinase-treated sEVs, it was demonstrated that these different analytical results could be possibly caused by the protein corona of sEVs. Consideration of the sample concentration and linearity range is important for obtaining reproducible and reliable data of sEVs.
Collapse
|
18
|
Fortunato D, Mladenović D, Criscuoli M, Loria F, Veiman KL, Zocco D, Koort K, Zarovni N. Opportunities and Pitfalls of Fluorescent Labeling Methodologies for Extracellular Vesicle Profiling on High-Resolution Single-Particle Platforms. Int J Mol Sci 2021; 22:10510. [PMID: 34638850 PMCID: PMC8508895 DOI: 10.3390/ijms221910510] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 09/23/2021] [Accepted: 09/23/2021] [Indexed: 12/26/2022] Open
Abstract
The relevance of extracellular vesicles (EVs) has grown exponentially, together with innovative basic research branches that feed medical and bioengineering applications. Such attraction has been fostered by the biological roles of EVs, as they carry biomolecules from any cell type to trigger systemic paracrine signaling or to dispose metabolism products. To fulfill their roles, EVs are transported through circulating biofluids, which can be exploited for the administration of therapeutic nanostructures or collected to intercept relevant EV-contained biomarkers. Despite their potential, EVs are ubiquitous and considerably heterogeneous. Therefore, it is fundamental to profile and identify subpopulations of interest. In this study, we optimized EV-labeling protocols on two different high-resolution single-particle platforms, the NanoFCM NanoAnalyzer (nFCM) and Particle Metrix ZetaView Fluorescence Nanoparticle Tracking Analyzer (F-NTA). In addition to the information obtained by particles' scattered light, purified and non-purified EVs from different cell sources were fluorescently stained with combinations of specific dyes and antibodies to facilitate their identification and characterization. Despite the validity and compatibility of EV-labeling strategies, they should be optimized for each platform. Since EVs can be easily confounded with similar-sized nanoparticles, it is imperative to control instrument settings and the specificity of staining protocols in order to conduct a rigorous and informative analysis.
Collapse
Affiliation(s)
| | - Danilo Mladenović
- HansaBioMed Life Sciences Ltd., 12618 Tallinn, Estonia; (D.M.); (F.L.); (K.-L.V.)
- School of Natural Sciences and Health, Tallinn University, 10120 Tallinn, Estonia;
| | | | - Francesca Loria
- HansaBioMed Life Sciences Ltd., 12618 Tallinn, Estonia; (D.M.); (F.L.); (K.-L.V.)
| | - Kadi-Liis Veiman
- HansaBioMed Life Sciences Ltd., 12618 Tallinn, Estonia; (D.M.); (F.L.); (K.-L.V.)
| | - Davide Zocco
- Exosomics SpA, 53100 Siena, Italy; (D.F.); (M.C.); (D.Z.)
- Cell and Gene Therapy Research and Development, Lonza Inc., Rockville, MD 20850, USA
| | - Kairi Koort
- School of Natural Sciences and Health, Tallinn University, 10120 Tallinn, Estonia;
| | - Natasa Zarovni
- Exosomics SpA, 53100 Siena, Italy; (D.F.); (M.C.); (D.Z.)
- HansaBioMed Life Sciences Ltd., 12618 Tallinn, Estonia; (D.M.); (F.L.); (K.-L.V.)
| |
Collapse
|
19
|
Chong WL, Chupradit K, Chin SP, Khoo MM, Khor SM, Tayapiwatana C, Nimmanpipug P, Thongkum W, Lee VS. Protein-Protein Interactions: Insight from Molecular Dynamics Simulations and Nanoparticle Tracking Analysis. Molecules 2021; 26:5696. [PMID: 34577167 DOI: 10.3390/molecules26185696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/13/2021] [Accepted: 09/16/2021] [Indexed: 11/23/2022] Open
Abstract
Protein-protein interaction plays an essential role in almost all cellular processes and biological functions. Coupling molecular dynamics (MD) simulations and nanoparticle tracking analysis (NTA) assay offered a simple, rapid, and direct approach in monitoring the protein-protein binding process and predicting the binding affinity. Our case study of designed ankyrin repeats proteins (DARPins)—AnkGAG1D4 and the single point mutated AnkGAG1D4-Y56A for HIV-1 capsid protein (CA) were investigated. As reported, AnkGAG1D4 bound with CA for inhibitory activity; however, it lost its inhibitory strength when tyrosine at residue 56 AnkGAG1D4, the most key residue was replaced by alanine (AnkGAG1D4-Y56A). Through NTA, the binding of DARPins and CA was measured by monitoring the increment of the hydrodynamic radius of the AnkGAG1D4-gold conjugated nanoparticles (AnkGAG1D4-GNP) and AnkGAG1D4-Y56A-GNP upon interaction with CA in buffer solution. The size of the AnkGAG1D4-GNP increased when it interacted with CA but not AnkGAG1D4-Y56A-GNP. In addition, a much higher binding free energy (∆GB) of AnkGAG1D4-Y56A (−31 kcal/mol) obtained from MD further suggested affinity for CA completely reduced compared to AnkGAG1D4 (−60 kcal/mol). The possible mechanism of the protein-protein binding was explored in detail by decomposing the binding free energy for crucial residues identification and hydrogen bond analysis.
Collapse
|
20
|
Abstract
Extracellular vesicles (EVs) have been recognized as an evolving biomarker within the liquid biopsy family. While carrying both host cell proteins and different types of RNAs, EVs are also present in sufficient quantities in biological samples to be tested using many molecular analysis platforms to interrogate their content. However, because EVs in biological samples are comprised of both disease and non-disease related EVs, enrichment is often required to remove potential interferences from the downstream molecular assay. Most benchtop isolation/enrichment methods require > milliliter levels of sample and can cause varying degrees of damage to the EVs. In addition, some of the common EV benchtop isolation methods do not sort the diseased from the non-diseased related EVs. Simultaneously, the detection of the overall concentration and size distribution of the EVs is highly dependent on techniques such as electron microscopy and Nanoparticle Tracking Analysis, which can include unexpected variations and biases as well as complexity in the analysis. This review discusses the importance of EVs as a biomarker secured from a liquid biopsy and covers some of the traditional and non-traditional, including microfluidics and resistive pulse sensing, technologies for EV isolation and detection, respectively.
Collapse
Affiliation(s)
- Zheng Zhao
- Bioengineering Program, University of Kansas, Lawrence, KS 66045, USA.,Center of BioModular Multiscale Systems for Precision Medicine, Lawrence, KS 66045, USA
| | - Harshani Wijerathne
- Department of Mechanical Engineering, Temple University, Philadelphia, PA 19122, USA
| | - Andrew K Godwin
- KU Cancer Center, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Steven A Soper
- Bioengineering Program, University of Kansas, Lawrence, KS 66045, USA.,Center of BioModular Multiscale Systems for Precision Medicine, Lawrence, KS 66045, USA.,Department of Chemistry, University of Kansas, Lawrence, KS 66045, USA.,Department of Mechanical Engineering, University of Kansas, Lawrence, KS 66045, USA.,KU Cancer Center, University of Kansas Medical Center, Kansas City, KS 66160, USA.,Ulsan National Institute of Science & Technology, Ulju-gun, Ulsan, 44919, South Korea
| |
Collapse
|
21
|
Cho S, Yi J, Kwon Y, Kang H, Han C, Park J. Multifluorescence Single Extracellular Vesicle Analysis by Time-Sequential Illumination and Tracking. ACS Nano 2021; 15:11753-11761. [PMID: 34181396 DOI: 10.1021/acsnano.1c02556] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We demonstrate a fluorescence-based nanoparticle tracking analysis (NTA) system for the characterization of both the size and membrane protein expression of individual extracellular vesicles (EVs). A sheet of lasers with four different wavelengths was sequentially shone onto extracellular vesicles according to a preprogrammed schedule, providing scattering images intercalated by three fluorescent images. The presence of extracellular vesicles was tracked frame by frame from scattering images. Fluorescence-labeled membrane proteins on EVs were detected by comparing scattering and fluorescent images. The tetraspanins (CD9, CD63, and CD81) of individual HEK293 EVs analyzed by both NTA and total internal reflection fluorescence microscopy showed that the proposed NTA system can contribute to the understanding of individual extracellular vesicles.
Collapse
Affiliation(s)
- Siwoo Cho
- Department of Mechanical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro. Nam-Gu, Pohang, Gyeong-buk 37673, Republic of Korea
- EXOSOMEplus Inc., Suwon, Gyeonggi-do 16229, Republic of Korea
| | - Johan Yi
- Department of Mechanical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro. Nam-Gu, Pohang, Gyeong-buk 37673, Republic of Korea
| | - Yongmin Kwon
- Department of Mechanical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro. Nam-Gu, Pohang, Gyeong-buk 37673, Republic of Korea
| | - Hyejin Kang
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, 77 Cheongam-Ro. Nam-Gu, Pohang, Gyeong-buk 37673, Republic of Korea
| | - Chungmin Han
- Department of Mechanical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro. Nam-Gu, Pohang, Gyeong-buk 37673, Republic of Korea
| | - Jaesung Park
- Department of Mechanical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro. Nam-Gu, Pohang, Gyeong-buk 37673, Republic of Korea
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, 77 Cheongam-Ro. Nam-Gu, Pohang, Gyeong-buk 37673, Republic of Korea
| |
Collapse
|
22
|
Hsiao YP, Chen C, Lee CM, Chen PY, Chung WH, Wang YP, Hung YC, Cheng CM, Chen C, Ko BH, Hsu MY. Differences in the Quantity and Composition of Extracellular Vesicles in the Aqueous Humor of Patients with Retinal Neovascular Diseases. Diagnostics (Basel) 2021; 11:1276. [PMID: 34359359 DOI: 10.3390/diagnostics11071276] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 07/11/2021] [Accepted: 07/12/2021] [Indexed: 12/16/2022] Open
Abstract
Extracellular vesicles (EVs) are secreted by various cells in the body fluid system and have been found to influence vessel formation and inflammatory responses in a variety of diseases. However, which EVs and their subtypes are involved in vascular retinal diseases is still unclear. Therefore, the aim of this study was to explore the particle distribution of EVs in retinal neovascular diseases, including age-related macular degeneration, polypoidal choroidal vasculopathy, and central retinal vein occlusion. The aqueous humor was harvested from 20 patients with different retinal neovascular diseases and six patients with cataracts as the control group. The particle distribution was analyzed using nanoparticle tracking analysis (NTA) and transmitting electron microscopy (TEM). The results revealed that the disease groups had large amounts of EVs and their subtypes compared to the control group. After isolating exosomes, a higher expression of CD81+ exosomes was shown in the disease groups using flow cytometry. The exosomes were then further classified into three subtypes of exomeres, small exosomes, and large exosomes, and their amounts were shown to differ depending on the disease type. To the best of our knowledge, this is the first study to elucidate the dynamics of EVs in retinal neovascular diseases using clinical cases. Our findings demonstrated the possible functionality of microvesicles and exosomes, indicating the potential of exosomes in the diagnosis and therapy of retinal neovascular diseases.
Collapse
|
23
|
Ilhan-Ayisigi E, Ghazal A, Sartori B, Dimaki M, Svendsen WE, Yesil-Celiktas O, Yaghmur A. Continuous Microfluidic Production of Citrem-Phosphatidylcholine Nano-Self-Assemblies for Thymoquinone Delivery. Nanomaterials (Basel) 2021; 11:1510. [PMID: 34200457 PMCID: PMC8229635 DOI: 10.3390/nano11061510] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/04/2021] [Accepted: 06/05/2021] [Indexed: 01/25/2023]
Abstract
Lamellar and non-lamellar liquid crystalline nanodispersions, including liposomes, cubosomes, and hexosomes are attractive platforms for drug delivery, bio-imaging, and related pharmaceutical applications. As compared to liposomes, there is a modest number of reports on the continuous production of cubosomes and hexosomes. Using a binary lipid mixture of citrem and soy phosphatidylcholine (SPC), we describe the continuous production of nanocarriers for delivering thymoquinone (TQ, a substance with various therapeutic potentials) by employing a commercial microfluidic hydrodynamic flow-focusing chip. In this study, nanoparticle tracking analysis (NTA) and synchrotron small-angle X-ray scattering (SAXS) were employed to characterize TQ-free and TQ-loaded citrem/SPC nanodispersions. Microfluidic synthesis led to formation of TQ-free and TQ-loaded nanoparticles with mean sizes around 115 and 124 nm, and NTA findings indicated comparable nanoparticle size distributions in these nanodispersions. Despite the attractiveness of the microfluidic chip for continuous production of citrem/SPC nano-self-assemblies, it was not efficient as comparable mean nanoparticle sizes were obtained on employing a batch (discontinuous) method based on low-energy emulsification method. SAXS results indicated the formation of a biphasic feature of swollen lamellar (Lα) phase in coexistence with an inverse bicontinuous cubic Pn3m phase in all continuously produced TQ-free and TQ-loaded nanodispersions. Further, a set of SAXS experiments were conducted on samples prepared using the batch method for gaining further insight into the effects of ethanol and TQ concentration on the structural features of citrem/SPC nano-self-assemblies. We discuss these effects and comment on the need to introduce efficient microfluidic platforms for producing nanocarriers for delivering TQ and other therapeutic agents.
Collapse
Affiliation(s)
- Esra Ilhan-Ayisigi
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100 Bornova-Izmir, Turkey; (E.I.-A.); (O.Y.-C.)
- Genetic and Bioengineering Department, Faculty of Engineering and Architecture, Kirsehir Ahi Evran University, 40100 Kirsehir, Turkey
| | - Aghiad Ghazal
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark;
- Global Research Technologies, Novo Nordisk, Novo Nordisk Park, 2760 Måløv, Denmark
| | - Barbara Sartori
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9/4, 8010 Graz, Austria;
| | - Maria Dimaki
- DTU Bioengineering—Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads Bldg. 221, 2800 Kongens Lyngby, Denmark; (M.D.); (W.E.S.)
| | - Winnie Edith Svendsen
- DTU Bioengineering—Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads Bldg. 221, 2800 Kongens Lyngby, Denmark; (M.D.); (W.E.S.)
| | - Ozlem Yesil-Celiktas
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100 Bornova-Izmir, Turkey; (E.I.-A.); (O.Y.-C.)
| | - Anan Yaghmur
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark;
| |
Collapse
|
24
|
Longobardi A, Benussi L, Nicsanu R, Bellini S, Ferrari C, Saraceno C, Zanardini R, Catania M, Di Fede G, Squitti R, Binetti G, Ghidoni R. Plasma Extracellular Vesicle Size and Concentration Are Altered in Alzheimer's Disease, Dementia With Lewy Bodies, and Frontotemporal Dementia. Front Cell Dev Biol 2021; 9:667369. [PMID: 34046409 PMCID: PMC8148014 DOI: 10.3389/fcell.2021.667369] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 03/31/2021] [Indexed: 12/14/2022] Open
Abstract
Alzheimer's disease (AD), frontotemporal dementia (FTD), and dementia with Lewy bodies (DLB) are the three major neurodegenerative dementias. In this study, we provide evidence that an alteration in extracellular vesicles (EVs) release is common across the three most common neurodegenerative dementias, AD, DLB, and FTD. Specifically, we analyzed plasma EVs in three groups of patients affected by AD, DLB, and FTD, and we found a significant reduction in EVs concentration and larger EVs size in all patient groups. We then investigated whether the loss of neurotrophic factors is also a common pathogenic mechanism among FTD, DLB, and AD, and if levels of neurotrophic factors might affect EVs release. Plasma levels of progranulin and cystatin C (CysC) were partially altered; however, taking together all variables significantly associated with the diagnostic groups only EVs size and concentration were able to distinguish patients from controls. The diagnostic performance of these two EVs parameters together (ratio) was high, with a sensitivity of 83.3% and a specificity of 86.7%, able to distinguish patients from controls but not to differentiate the different forms of dementias. Among the candidate neurotrophic factors, only CysC levels were associated with EVs concentration. Our study suggests that an alteration in the intercellular communication mediated by EVs might be a common molecular pathway underlying neurodegenerative dementias. The identification of shared disease mechanisms is of pivotal importance to develop treatments to delay disease progression. To this aim, further studies investigating plasma EVs size and concentration as early biomarkers of dementia are required.
Collapse
Affiliation(s)
- Antonio Longobardi
- Molecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Luisa Benussi
- Molecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Roland Nicsanu
- Molecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Sonia Bellini
- Molecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Clarissa Ferrari
- Service of Statistics, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Claudia Saraceno
- Molecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Roberta Zanardini
- Molecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Marcella Catania
- Neurology 5/Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Giuseppe Di Fede
- Neurology 5/Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Rosanna Squitti
- Molecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Giuliano Binetti
- Molecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy.,MAC-Memory Clinic, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Roberta Ghidoni
- Molecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| |
Collapse
|
25
|
Sun R, Wang H, Shi Y, Sun Z, Jiang H, Zhang J. Changes in the Morphology, Number, and Pathological Protein Levels of Plasma Exosomes May Help Diagnose Alzheimer's Disease. J Alzheimers Dis 2021; 73:909-917. [PMID: 31884461 DOI: 10.3233/jad-190497] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Exosomes are nano-sized extracellular vesicles that are secreted by cells and usually found in body fluids. Since they freely cross the blood-brain barrier, neuronal exosomes respond directly to changes in the brain's environment. Recent studies have shown that exosomes contain both amyloid-β (Aβ) and tau proteins and have a controversial role in the Alzheimer's disease (AD) process. In this study, enzyme-linked immunosorbent assay was used to detect the levels of P-S396-tau and Aβ1-42 in plasma exosomes. We found that levels of P-S396-tau and Aβ1-42 in plasma exosomes of AD patients were significantly higher compared to those in matched healthy controls. The difference between plasma exosomes of AD patients and those of matched healthy controls was determined using transmission electron microscopy and nanoparticle tracking analysis. Exosomes from AD patients were smaller and lower in quantity. These data together may provide a basis for early diagnosis of AD.
Collapse
Affiliation(s)
- Ruihua Sun
- Department of Neurology, Henan Provincial People's Hospital of Henan University, Zhengzhou, Henan, China
| | - Huayuan Wang
- Department of Neurology, People's Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yingying Shi
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Zhikun Sun
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Haisong Jiang
- Institute of Neurology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
| | - Jiewen Zhang
- Department of Neurology, Henan Provincial People's Hospital of Henan University, Zhengzhou, Henan, China
| |
Collapse
|
26
|
Laurenzana I, Trino S, Lamorte D, Girasole M, Dinarelli S, De Stradis A, Grieco V, Maietti M, Traficante A, Statuto T, Villani O, Musto P, Sgambato A, De Luca L, Caivano A. Analysis of Amount, Size, Protein Phenotype and Molecular Content of Circulating Extracellular Vesicles Identifies New Biomarkers in Multiple Myeloma. Int J Nanomedicine 2021; 16:3141-3160. [PMID: 33994784 PMCID: PMC8114829 DOI: 10.2147/ijn.s303391] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/11/2021] [Indexed: 01/08/2023] Open
Abstract
INTRODUCTION Extracellular vesicles (EVs) are naturally secreted cellular lipid bilayer particles, which carry a selected molecular content. Owing to their systemic availability and their role in tumor pathogenesis, circulating EVs (cEVs) can be a valuable source of new biomarkers useful for tumor diagnosis, prognostication and monitoring. However, a precise approach for isolation and characterization of cEVs as tumor biomarkers, exportable in a clinical setting, has not been conclusively established. METHODS We developed a novel and laboratory-made procedure based on a bench centrifuge step which allows the isolation of serum cEVs suitable for subsequent characterization of their size, amount and phenotype by nanoparticle tracking analysis, microscopy and flow cytometry, and for nucleic acid assessment by digital PCR. RESULTS Applied to blood from healthy subjects (HSs) and tumor patients, our approach permitted from a small volume of serum (i) the isolation of a great amount of EVs enriched in small vesicles free from protein contaminants; (ii) a suitable and specific cell origin identification of EVs, and (iii) nucleic acid content assessment. In clonal plasma cell malignancy, like multiple myeloma (MM), our approach allowed us to identify specific MM EVs, and to characterize their size, concentration and microRNA content allowing significant discrimination between MM and HSs. Finally, EV associated biomarkers correlated with MM clinical parameters. CONCLUSION Overall, our cEV based procedure can play an important role in malignancy biomarker discovery and then in real-time tumor monitoring using minimal invasive samples. From a practical point of view, it is smart (small sample volume), rapid (two hours), easy (no specific expertise required) and requirements are widely available in clinical laboratories.
Collapse
Affiliation(s)
- Ilaria Laurenzana
- Laboratory of Preclinical and Translational Research, Centro di Riferimento Oncologico della Basilicata (IRCCS-CROB), Rionero in Vulture, PZ, Italy
| | - Stefania Trino
- Laboratory of Preclinical and Translational Research, Centro di Riferimento Oncologico della Basilicata (IRCCS-CROB), Rionero in Vulture, PZ, Italy
| | - Daniela Lamorte
- Laboratory of Preclinical and Translational Research, Centro di Riferimento Oncologico della Basilicata (IRCCS-CROB), Rionero in Vulture, PZ, Italy
| | - Marco Girasole
- Institute for the Study of the Structure of Matter, National Research Council (CNR), Rome, Italy
| | - Simone Dinarelli
- Institute for the Study of the Structure of Matter, National Research Council (CNR), Rome, Italy
| | - Angelo De Stradis
- Institute for Sustainable Plant Protection, National Research Council (CNR), Bari, Italy
| | - Vitina Grieco
- Laboratory of Clinical Research and Advanced Diagnostics, Centro di Riferimento Oncologico della Basilicata (IRCCS-CROB), Rionero in Vulture, PZ, Italy
| | - Maddalena Maietti
- Unit of Clinical Pathology, Centro di Riferimento Oncologico della Basilicata (IRCCS-CROB), Rionero in Vulture, PZ, Italy
| | - Antonio Traficante
- Unit of Clinical Pathology, Centro di Riferimento Oncologico della Basilicata (IRCCS-CROB), Rionero in Vulture, PZ, Italy
| | - Teodora Statuto
- Laboratory of Clinical Research and Advanced Diagnostics, Centro di Riferimento Oncologico della Basilicata (IRCCS-CROB), Rionero in Vulture, PZ, Italy
| | - Oreste Villani
- Hematology and Stem Cell Transplantation Unit, Centro di Riferimento Oncologico della Basilicata (IRCCS-CROB), Rionero in Vulture, PZ, Italy
| | - Pellegrino Musto
- Hematology and Stem Cell Transplantation Unit, Centro di Riferimento Oncologico della Basilicata (IRCCS-CROB), Rionero in Vulture, PZ, Italy
| | - Alessandro Sgambato
- Scientific Direction, Centro di Riferimento Oncologico della Basilicata (IRCCS-CROB), Rionero in Vulture, PZ, Italy
| | - Luciana De Luca
- Laboratory of Clinical Research and Advanced Diagnostics, Centro di Riferimento Oncologico della Basilicata (IRCCS-CROB), Rionero in Vulture, PZ, Italy
| | - Antonella Caivano
- Laboratory of Clinical Research and Advanced Diagnostics, Centro di Riferimento Oncologico della Basilicata (IRCCS-CROB), Rionero in Vulture, PZ, Italy
| |
Collapse
|
27
|
George SK, Lauková L, Weiss R, Semak V, Fendl B, Weiss VU, Steinberger S, Allmaier G, Tripisciano C, Weber V. Comparative Analysis of Platelet-Derived Extracellular Vesicles Using Flow Cytometry and Nanoparticle Tracking Analysis. Int J Mol Sci 2021; 22:ijms22083839. [PMID: 33917210 PMCID: PMC8068037 DOI: 10.3390/ijms22083839] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/01/2021] [Accepted: 04/03/2021] [Indexed: 01/08/2023] Open
Abstract
Growing interest in extracellular vesicles (EVs) has prompted the advancements of protocols for improved EV characterization. As a high-throughput, multi-parameter, and single particle technique, flow cytometry is widely used for EV characterization. The comparison of data on EV concentration, however, is hindered by the lack of standardization between different protocols and instruments. Here, we quantified EV counts of platelet-derived EVs, using two flow cytometers (Gallios and CytoFLEX LX) and nanoparticle tracking analysis (NTA). Phosphatidylserine-exposing EVs were identified by labelling with lactadherin (LA). Calibration with silica-based fluorescent beads showed detection limits of 300 nm and 150 nm for Gallios and CytoFLEX LX, respectively. Accordingly, CytoFLEX LX yielded 40-fold higher EV counts and 13-fold higher counts of LA+CD41+ EVs compared to Gallios. NTA in fluorescence mode (F-NTA) demonstrated that only 9.5% of all vesicles detected in scatter mode exposed phosphatidylserine, resulting in good agreement of LA+ EVs for CytoFLEX LX and F-NTA. Since certain functional characteristics, such as the exposure of pro-coagulant phosphatidylserine, are not equally displayed across the entire EV size range, our study highlights the necessity of indicating the size range of EVs detected with a given approach along with the EV concentration to support the comparability between different studies.
Collapse
Affiliation(s)
- Sobha Karuthedom George
- Center for Biomedical Technology, Department for Biomedical Research, Danube University Krems, 3500 Krems, Austria; (S.K.G.); (L.L.); (R.W.); (V.S.); (B.F.); (C.T.)
| | - Lucia Lauková
- Center for Biomedical Technology, Department for Biomedical Research, Danube University Krems, 3500 Krems, Austria; (S.K.G.); (L.L.); (R.W.); (V.S.); (B.F.); (C.T.)
| | - René Weiss
- Center for Biomedical Technology, Department for Biomedical Research, Danube University Krems, 3500 Krems, Austria; (S.K.G.); (L.L.); (R.W.); (V.S.); (B.F.); (C.T.)
| | - Vladislav Semak
- Center for Biomedical Technology, Department for Biomedical Research, Danube University Krems, 3500 Krems, Austria; (S.K.G.); (L.L.); (R.W.); (V.S.); (B.F.); (C.T.)
| | - Birgit Fendl
- Center for Biomedical Technology, Department for Biomedical Research, Danube University Krems, 3500 Krems, Austria; (S.K.G.); (L.L.); (R.W.); (V.S.); (B.F.); (C.T.)
| | - Victor U. Weiss
- Institute of Chemical Technologies and Analytics, TU Wien, 1060 Vienna, Austria; (V.U.W.); (S.S.); (G.A.)
| | - Stephanie Steinberger
- Institute of Chemical Technologies and Analytics, TU Wien, 1060 Vienna, Austria; (V.U.W.); (S.S.); (G.A.)
| | - Günter Allmaier
- Institute of Chemical Technologies and Analytics, TU Wien, 1060 Vienna, Austria; (V.U.W.); (S.S.); (G.A.)
| | - Carla Tripisciano
- Center for Biomedical Technology, Department for Biomedical Research, Danube University Krems, 3500 Krems, Austria; (S.K.G.); (L.L.); (R.W.); (V.S.); (B.F.); (C.T.)
| | - Viktoria Weber
- Center for Biomedical Technology, Department for Biomedical Research, Danube University Krems, 3500 Krems, Austria; (S.K.G.); (L.L.); (R.W.); (V.S.); (B.F.); (C.T.)
- Correspondence: ; Tel.: +43-2732-893-2632
| |
Collapse
|
28
|
Arab T, Mallick ER, Huang Y, Dong L, Liao Z, Zhao Z, Gololobova O, Smith B, Haughey NJ, Pienta KJ, Slusher BS, Tarwater PM, Tosar JP, Zivkovic AM, Vreeland WN, Paulaitis ME, Witwer KW. Characterization of extracellular vesicles and synthetic nanoparticles with four orthogonal single-particle analysis platforms. J Extracell Vesicles 2021; 10:e12079. [PMID: 33850608 PMCID: PMC8023330 DOI: 10.1002/jev2.12079] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 03/04/2021] [Accepted: 03/05/2021] [Indexed: 12/20/2022] Open
Abstract
We compared four orthogonal technologies for sizing, counting, and phenotyping of extracellular vesicles (EVs) and synthetic particles. The platforms were: single‐particle interferometric reflectance imaging sensing (SP‐IRIS) with fluorescence, nanoparticle tracking analysis (NTA) with fluorescence, microfluidic resistive pulse sensing (MRPS), and nanoflow cytometry measurement (NFCM). EVs from the human T lymphocyte line H9 (high CD81, low CD63) and the promonocytic line U937 (low CD81, high CD63) were separated from culture conditioned medium (CCM) by differential ultracentrifugation (dUC) or a combination of ultrafiltration (UF) and size exclusion chromatography (SEC) and characterized by transmission electron microscopy (TEM) and Western blot (WB). Mixtures of synthetic particles (silica and polystyrene spheres) with known sizes and/or concentrations were also tested. MRPS and NFCM returned similar particle counts, while NTA detected counts approximately one order of magnitude lower for EVs, but not for synthetic particles. SP‐IRIS events could not be used to estimate particle concentrations. For sizing, SP‐IRIS, MRPS, and NFCM returned similar size profiles, with smaller sizes predominating (per power law distribution), but with sensitivity typically dropping off below diameters of 60 nm. NTA detected a population of particles with a mode diameter greater than 100 nm. Additionally, SP‐IRIS, MRPS, and NFCM were able to identify at least three of four distinct size populations in a mixture of silica or polystyrene nanoparticles. Finally, for tetraspanin phenotyping, the SP‐IRIS platform in fluorescence mode was able to detect at least two markers on the same particle, while NFCM detected either CD81 or CD63. Based on the results of this study, we can draw conclusions about existing single‐particle analysis capabilities that may be useful for EV biomarker development and mechanistic studies.
Collapse
Affiliation(s)
- Tanina Arab
- Department of Molecular and Comparative Pathobiology Johns Hopkins University School of Medicine Baltimore Maryland USA
| | - Emily R Mallick
- Department of Molecular and Comparative Pathobiology Johns Hopkins University School of Medicine Baltimore Maryland USA
| | - Yiyao Huang
- Department of Molecular and Comparative Pathobiology Johns Hopkins University School of Medicine Baltimore Maryland USA
| | - Liang Dong
- Department of Urology Johns Hopkins University School of Medicine Baltimore Maryland USA
| | - Zhaohao Liao
- Department of Molecular and Comparative Pathobiology Johns Hopkins University School of Medicine Baltimore Maryland USA
| | - Zezhou Zhao
- Department of Molecular and Comparative Pathobiology Johns Hopkins University School of Medicine Baltimore Maryland USA
| | - Olesia Gololobova
- Department of Molecular and Comparative Pathobiology Johns Hopkins University School of Medicine Baltimore Maryland USA
| | - Barbara Smith
- Department of Cell Biology Johns Hopkins University School of Medicine Baltimore Maryland USA
| | - Norman J Haughey
- Department of Neurology Johns Hopkins University School of Medicine Baltimore Maryland USA
| | - Kenneth J Pienta
- Department of Urology Johns Hopkins University School of Medicine Baltimore Maryland USA
| | - Barbara S Slusher
- Department of Neurology Johns Hopkins University School of Medicine Baltimore Maryland USA.,Johns Hopkins Drug Discovery Johns Hopkins University School of Medicine Baltimore Maryland USA
| | - Patrick M Tarwater
- Department of Epidemiology Johns Hopkins University Bloomberg School of Public Health Baltimore Maryland USA
| | - Juan Pablo Tosar
- Faculty of Science Universidad de la República Montevideo Uruguay.,Functional Genomics Unit Institut Pasteur de Montevideo Montevideo Uruguay
| | - Angela M Zivkovic
- Department of Nutrition University of California Davis Davis California USA
| | - Wyatt N Vreeland
- Bioprocess Measurements Group National Institute of Standards and Technology Gaithersburg Maryland USA
| | - Michael E Paulaitis
- Center for Nanomedicine at the Wilmer Eye Institute Johns Hopkins University School of Medicine Baltimore Maryland USA
| | - Kenneth W Witwer
- Department of Molecular and Comparative Pathobiology Johns Hopkins University School of Medicine Baltimore Maryland USA.,Department of Neurology Johns Hopkins University School of Medicine Baltimore Maryland USA.,The Richman Family Precision Medicine Center of Excellence in Alzheimer's Disease Johns Hopkins University School of Medicine Johns Hopkins Medicine and Johns Hopkins Bayview Medical Center Baltimore Maryland USA
| |
Collapse
|
29
|
Gao D, Shang J, Sun R, Shi Y, Jiang H, Ma M, Zhang J. Changes in the Morphology, Number, and Protein Levels of Plasma Exosomes in CADASIL Patients. J Alzheimers Dis 2021; 81:221-229. [PMID: 33749657 DOI: 10.3233/jad-210101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Exosomes are nano-sized extracellular vesicles which are secreted by cells and usually found in body fluids. Previous research has shown that exosomal secretion and autophagy-lysosomal pathway synergistically participates in intracellular abnormal protein elimination. The main pathological manifestations of Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is abnormal accumulation of mutant NOTCH3, and CADASIL vascular smooth muscle cells have been found with autophagy-lysosomal dysfunction. However, whether plasma exosomes change in CADASIL patients is still unclear. OBJECTIVE We are aimed to investigate the differences of plasma exosomes between CADASIL patients and healthy controls. METHODS The subjects included 30 CADASIL patients and 30 healthy controls without NOTCH3 mutation. The severity of white matter lesions (WMLs) of CADASIL patients was quantified by Fazekas score. Transmission electron microscopy and nanoparticle tracking analysis were performed to characterize plasma exosomes. In addition, NOTCH3, Neurofilament light and Aβ42 levels in plasma exosomes were quantified by enzyme-linked immunosorbent assays. RESULTS We found that exosomes from CADASIL patients were lower in quantity. In addition, CADASIL plasma exosomes had significantly lower levels of NOTCH3 and significantly increased levels of NFL than those of matched healthy subjects. Interestingly, plasma exosome NOTCH3 levels of CADASIL patients significantly correlated with severity of WMLs. CONCLUSION The exosome NOTCH3 may be related to the pathological changes of CADASIL, which provides a basis for the pathogenesis research of CADASIL. In addition, plasma exosome NOTCH3 and NFL levels may act as biomarkers to monitor and predict disease progression and measure therapeutic effectiveness in the future clinical trials.
Collapse
Affiliation(s)
- Dandan Gao
- Department of Neurology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Junkui Shang
- Department of Neurology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Ruihua Sun
- Department of Neurology, Henan University People's Hospital, Zhengzhou, Henan, China
| | - Yingying Shi
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Haisong Jiang
- Institute of Neurology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
| | - Mingming Ma
- Department of Neurology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Jiewen Zhang
- Department of Neurology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| |
Collapse
|
30
|
Avenick D, Kidd L, Istvan S, Dong F, Richter K, Edwards N, Hisada Y, Posma JJN, Massih CA, Mackman N. Effects of storage and leukocyte reduction on the concentration and procoagulant activity of extracellular vesicles in canine packed red cells. J Vet Emerg Crit Care (San Antonio) 2021; 31:221-230. [PMID: 33751799 DOI: 10.1111/vec.13050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 06/01/2019] [Accepted: 06/24/2019] [Indexed: 12/11/2022]
Abstract
OBJECTIVES To characterize the size and procoagulant activity of extracellular vesicles (EV) that accumulate in canine packed red blood cells (pRBCs) over time and the effect of leukocyte reduction on these characteristics. DESIGN Prospective cohort study. SETTING Private small animal specialty referral hospital and university research laboratories. ANIMALS Ten healthy blood donor dogs. INTERVENTIONS Five pRBCs units were obtained according to standard protocols, and 5 were leukocyte-reduced prior to processing. Platelet-free supernatant from the pRBC units was collected on days 0, 10, 20, 32, and 42. MEASUREMENTS AND MAIN RESULTS Nanoparticle tracking analysis was performed to determine the size and concentration of EVs. Thrombin generation associated with phosphatidylserine-positive EVs was determined using a capture assay. Factor Xa generation associated with phosphatidylserine-positive EVs and tissue factor-positive EVs was measured in a subset of EVs isolated by centrifugation of the supernatant at 20,000 × g. R package nparLD and the Mann-Whitney U-test were used to determine the effect of duration of storage and the effect of leukocyte reduction, respectively. Small (mean < 125 nm) procoagulant EVs accumulated over time, with significant increases occurring on or after day 20 in both non-leukocyte reduced and leukocyte-reduced units. The procoagulant activity of the EVs was due to phosphatidylserine, not tissue factor. Increases in EV concentration and procoagulant activity occurred earlier in non-leukocyte reduced units. Extracellular vesicle accumulation and procoagulant activity were not decreased at any individual time point by leukocyte reduction. CONCLUSIONS Further studies characterizing and determining the clinical relevance of small procoagulant EVs in pRBCs are warranted.
Collapse
Affiliation(s)
| | - Linda Kidd
- College of Veterinary Medicine, Western University of Health Sciences, Pomona, California
| | | | - Fanglong Dong
- Graduate College of Biomedical Sciences, Western University of Health Sciences, Pomona, California
| | - Keith Richter
- Veterinary Specialty Hospital, San Diego, California
| | | | - Yohei Hisada
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Jens J N Posma
- Departments of Internal Medicine and Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Cherein Abdel Massih
- College of Veterinary Medicine, Western University of Health Sciences, Pomona, California
| | - Nigel Mackman
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| |
Collapse
|
31
|
Reimer SL, Beniac DR, Hiebert SL, Booth TF, Chong PM, Westmacott GR, Zhanel GG, Bay DC. Comparative Analysis of Outer Membrane Vesicle Isolation Methods With an Escherichia coli tolA Mutant Reveals a Hypervesiculating Phenotype With Outer-Inner Membrane Vesicle Content. Front Microbiol 2021; 12:628801. [PMID: 33746922 PMCID: PMC7973035 DOI: 10.3389/fmicb.2021.628801] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 02/08/2021] [Indexed: 12/14/2022] Open
Abstract
Outer membrane vesicles (OMVs) produced by Gram-negative bacteria are mediators of cell survival and pathogenesis by facilitating virulence factor dissemination and resistance to antimicrobials. Studies of OMV properties often focus on hypervesiculating Escherichia coli mutants that have increased OMV production when compared to their corresponding wild-type (WT) strains. Currently, two conventional techniques, ultracentrifugation (UC) and ultradiafiltration (UF), are used interchangeably to isolate OMVs, however, there is concern that each technique may inadvertently alter the properties of isolated OMVs during study. To address this concern, we compared two OMV isolation methods, UC and UF, with respect to final OMV quantities, size distributions, and morphologies using a hypervesiculating Escherichia coli K-12 ΔtolA mutant. Nanoparticle tracking analysis (NTA) indicated that UC techniques result in lower vesicle yields compared to UF. However, UF permitted isolation of OMVs with smaller average sizes than UC, highlighting a potential OMV isolation size bias by each technique. Cryo-transmission electron microscopy (cryo-TEM) visualization of isolated OMVs revealed distinct morphological differences between WT and ΔtolA OMVs, where ΔtolA OMVs isolated by either UC or UF method possessed a greater proportion of OMVs with two or more membranes. Proteomic OMV analysis of WT and ΔtolA OMVs confirmed that ΔtolA enhances inner plasma membrane carryover in multi-lamellar OMVs. This study demonstrates that UC and UF are useful techniques for OMV isolation, where UF may be preferable due to faster isolation, higher OMV yields and enrichment of smaller sized vesicles.
Collapse
Affiliation(s)
- Shelby L Reimer
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
| | - Daniel R Beniac
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada
| | - Shannon L Hiebert
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada
| | - Timothy F Booth
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada
| | - Patrick M Chong
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada
| | - Garrett R Westmacott
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada
| | - George G Zhanel
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
| | - Denice C Bay
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
| |
Collapse
|
32
|
Siwaponanan P, Keawvichit R, Lekmanee K, Chomanee N, Pattanapanyasat K. Enumeration and phenotyping of circulating microvesicles by flow cytometry and nanoparticle tracking analysis: Plasma versus serum. Int J Lab Hematol 2020; 43:506-514. [PMID: 33244869 DOI: 10.1111/ijlh.13407] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/28/2020] [Accepted: 11/07/2020] [Indexed: 01/07/2023]
Abstract
INTRODUCTION Microvesicles (MVs) are bioactive, submicron-sized (0.01-1000 nm) membrane vesicles released from various types of cells under normal physiological and pathophysiological conditions. MVs have emerged as important mediators of cell-to-cell communication in a diverse range of normal and pathological processes. MVs have been recognized as potential biomarkers in coagulation, inflammation, and cancer. However, for clinical use, minimizing factors which could affect enumeration and phenotypic characterization of MVs during pre-analytical steps is crucial. In this study, we used flow cytometry and nanoparticle tracking analysis (NTA) to investigate the impact of blood collection using with and without anticoagulant on the number and phenotype of MVs in blood samples. METHODS Blood from 30 healthy volunteers was collected by venipuncture into 3.2% sodium citrate and clot activator tubes. MV subpopulations and their concentrations were investigated using flow cytometry and NTA. MV morphology was examined by transmission electron microscopy. RESULTS Results showed that the concentration of MVs was significantly lower in serum than in plasma and that CD41+ MV, CD41+ /CD62P+ MV, CD45+ MV, and CD142+ MV levels from serum were significantly lower than those from plasma, whereas no significant differences in Annexin V (Anx V)+ MV, CD235a+ MV, and CD144+ MV levels were found. Interestingly, serum MVs had a higher proportion of small-sized MVs and lower proportion of large-sized MVs than did plasma MVs. CONCLUSION Although plasma samples are commonly used, our results suggest that serum can also be used in enumeration of MVs, but care must be taken if coagulation is an aspect of the research.
Collapse
Affiliation(s)
- Panjaree Siwaponanan
- Department for Research and Development, Faculty of Medicine Siriraj Hospital, Siriraj Center of Research Excellence for Microparticle and Exosome in Diseases, Mahidol University, Bangkok, Thailand
| | - Rassamon Keawvichit
- Department of Clinical Pathology, Faculty of Medicine, Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand
| | - Kittima Lekmanee
- Department for Research and Development, Faculty of Medicine Siriraj Hospital, Siriraj Center of Research Excellence for Microparticle and Exosome in Diseases, Mahidol University, Bangkok, Thailand
| | - Nusara Chomanee
- Department of Pathology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kovit Pattanapanyasat
- Department for Research and Development, Faculty of Medicine Siriraj Hospital, Siriraj Center of Research Excellence for Microparticle and Exosome in Diseases, Mahidol University, Bangkok, Thailand
| |
Collapse
|
33
|
Ouahabi OE, Salim H, Pero-Gascon R, Benavente F. A simple method for the analysis of extracellular vesicles enriched for exosomes from human serum by capillary electrophoresis with ultraviolet diode array detection. J Chromatogr A 2020; 1635:461752. [PMID: 33333350 DOI: 10.1016/j.chroma.2020.461752] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 11/17/2020] [Accepted: 11/23/2020] [Indexed: 01/08/2023]
Abstract
Extracellular vesicles (EVs) are membrane enclosed vesicles (<1 µm), such as exosomes (30-150 nm), involved in cell communication, which have important biological implications. In this study, EV preparations were enriched for exosomes from human serum by polyethylene glycol (PEG) precipitation. Different variables of the PEG precipitation method (i.e. concentration of PEG, filtration and centrifugation of the resuspended pellets) were evaluated by measuring the size of the isolated particles by dynamic light scattering (DLS) and nanoparticle tracking analysis (NTA). In addition, a novel capillary electrophoresis-ultraviolet diode array (CE-UV-DAD) method was developed to obtain characteristic multiwavelength electrophoretic profiles of the EV preparations. Using EV preparations precipitated with 10% m/v of PEG, a background electrolyte (BGE) of 0.1 M Tris and 0.25 M boric acid at pH 7.9 with 0.5% m/v of hydroxypropyl cellulose (HPC) allowed reducing the adsorption of the EVs to the inner wall of the fused silica separation capillary. Sodium dodecyl sulfate (SDS) at 0.1% m/v was also necessary to enhance dispersibility, while homogenizing the charge of the particles to improve the size-dependent separation induced by HPC. Under these optimized conditions, a characteristic electrophoretic multiwavelength profile of the EV preparation and a standard of exosomes was obtained, and separation showed excellent reproducibility and appropriate analysis times. The obtained electrophoretic fingerprints are a simple, effective and complementary tool for the quality control of EV preparations.
Collapse
Affiliation(s)
- Oumaima El Ouahabi
- Department of Chemical Engineering and Analytical Chemistry, Institute for Research on Nutrition and Food Safety (INSA•UB), University of Barcelona, 08028, Barcelona, Spain
| | - Hiba Salim
- Department of Chemical Engineering and Analytical Chemistry, Institute for Research on Nutrition and Food Safety (INSA•UB), University of Barcelona, 08028, Barcelona, Spain
| | - Roger Pero-Gascon
- Department of Chemical Engineering and Analytical Chemistry, Institute for Research on Nutrition and Food Safety (INSA•UB), University of Barcelona, 08028, Barcelona, Spain
| | - Fernando Benavente
- Department of Chemical Engineering and Analytical Chemistry, Institute for Research on Nutrition and Food Safety (INSA•UB), University of Barcelona, 08028, Barcelona, Spain.
| |
Collapse
|
34
|
Duerasch A, Herrmann P, Hogh K, Henle T. Study on β-Casein Depleted Casein Micelles: Micellar Stability, Enzymatic Cross-Linking, and Suitability as Nanocarriers. J Agric Food Chem 2020; 68:13940-13949. [PMID: 33200608 DOI: 10.1021/acs.jafc.0c00904] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
β-Casein is an amphiphilic protein and thus considered as multilaterally bound in casein micelles. Its polar molecule part, in particular the phosphoserine residues, can interact electrostatically with colloidal calcium phosphate (CCP) to form nanoclusters and its nonpolar molecule part enhances micellar stability by forming hydrophobic bonds to other caseins. Because cooling weakens hydrophobic interactions, a substantial portion of β-casein can be irreversibly removed from the casein micelle by repeated depletion steps, including cooling and subsequent ultracentrifugation. Although this effect of cooling on the micellar β-casein concentration has been well known for decades, the influence of depletion on the main characteristics of casein micelles has been less investigated yet. Therefore, we aimed to analyze the consequences of β-casein depletion on the stability as well as the functionality of casein micelles to evaluate the suitability of depleted compared to native casein micelles as nanocarriers. Up to 43.2% of the total β-casein was irreversibly sequestered from native casein micelles by repeated cooling and ultracentrifugation steps. Depletion showed no effect on size distribution as well as polydispersity and particle concentration of micelle suspensions as measured via dynamic light scattering (DLS) and nanoparticle tracking analysis (NTA), respectively. Furthermore, the stability of the micelles against ethanol or the chelating agent ethylene glycol-bis(β-aminoethyl ether)-N,N,N',N'-tetraacetic acid (EGTA) was not influenced by β-casein depletion. Notwithstanding, depleted micelles were less susceptible to enzymatic cross-linking by microbial transglutaminase (mTG), indicating narrowed water channels due to depletion. Additionally, loading experiments showed that depleted micelles could be loaded with linoleic acid (LA) as intensively as native micelles, whereupon LA displaces up to 81.3% of β-casein from native micelles. Our results confirm that depletion does not enhance the ability of the casein micelle to act as a nanocarrier for hydrophobic substances but could support the understanding of the casein micelle structure. Based on the observed unchanged stability against EGTA, the hindered enzymatical cross-linking, and the efficient displacing of β-casein by LA, we suggest that the major portion of micellar β-casein is hydrophobically incorporated into the micelle structure without impact on the formation of calcium phosphate nanoclusters. The main role of β-casein for the casein micelle structure, therefore, might be to facilitate the high hydration of the interior and thus the high permeability of casein micelles.
Collapse
Affiliation(s)
- Anja Duerasch
- Chair of Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Pia Herrmann
- Chair of Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Konstantin Hogh
- Chair of Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Thomas Henle
- Chair of Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| |
Collapse
|
35
|
Usfoor Z, Kaufmann K, Rakib ASH, Hergenröder R, Shpacovitch V. Features of Sizing and Enumeration of Silica and Polystyrene Nanoparticles by Nanoparticle Tracking Analysis (NTA). Sensors (Basel) 2020; 20:s20226611. [PMID: 33227898 PMCID: PMC7699299 DOI: 10.3390/s20226611] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/12/2020] [Accepted: 11/16/2020] [Indexed: 12/26/2022]
Abstract
Nanoparticle Tracking Analysis (NTA) allows for the simultaneous determination of both size and concentration of nanoparticles in a sample. This study investigates the accuracy of particle size and concentration measurements performed on an LM10 device. For experiments, standard nanoparticles of different sizes composed of two materials with different refractive indices were used. Particle size measurements were found to have a decent degree of accuracy. This fact was verified by the manufacturer-reported particle size—determined by transmission electron microscopy (TEM)—as well as by performed scanning electron microscopy (SEM) measurements. On the other hand, concentration measurements resulted in overestimation of the particle concentration in majority of cases. Thus, our findings confirmed the accuracy of nanoparticle sizing performed by the LM10 instrument and highlighted the overestimation of particle concentration made by this device. In addition, an approach of swift correction of the results of concentration measurements received for samples is suggested in the presented study.
Collapse
|
36
|
Dehghani M, Montange RK, Olszowy MW, Pollard D. An Emerging Fluorescence-Based Technique for Quantification and Protein Profiling of Extracellular Vesicles. SLAS Technol 2020; 26:189-199. [PMID: 33185120 DOI: 10.1177/2472630320970458] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Robust and well-established techniques for the quantification and characterization of extracellular vesicles (EVs) are a crucial need for the utilization of EVs as potential diagnostic and therapeutic tools. Current bulk analysis techniques such as proteomics and Western blot suffer from low resolution in the detection of small changes in target marker expression levels, exemplified by the heterogeneity of EVs. Microscopy-based techniques can provide valuable information from individual EVs; however, they are time-consuming and statistically less powerful than other techniques. Flow cytometry has been successfully employed for the quantification and characterization of individual EVs within larger populations. However, traditional flow cytometry is not highly suited for the examination of smaller, submicron particles. Here we demonstrate the accurate and precise quantification of nanoparticles such as EVs using the Virus Counter 3100 (VC3100) platform, a fluorescence-based technique that uses the principles of flow cytometry with critical enhancements to enable the effective detection of smaller particles. This approach can detect nanoparticles precisely with no evidence of inaccurate concentration measurement from masking effects associated with traditional nanoparticle tracking analysis (NTA). Fluorescently labeled EVs from different sources were successfully quantified using the VC3100 without a postlabeling washing step. Moreover, protein profiling and characterization of individual EVs were achieved and have been shown to determine the expression level of target protein markers.
Collapse
Affiliation(s)
- Mehdi Dehghani
- Sartorius Corporate Research, Sartorius (Smart Labs), Boston, MA, USA.,Sartorius Corporate Research, Sartorius (Smart Labs), Boston, MA, USA.,Department of Microsystems Engineering, Rochester Institute of Technology, Rochester, NY, USA
| | | | | | - David Pollard
- Sartorius Corporate Research, Sartorius (Smart Labs), Boston, MA, USA
| |
Collapse
|
37
|
Drexel R, Siupa A, Carnell-Morris P, Carboni M, Sullivan J, Meier F. Fast and Purification-Free Characterization of Bio-Nanoparticles in Biological Media by Electrical Asymmetrical Flow Field-Flow Fractionation Hyphenated with Multi-Angle Light Scattering and Nanoparticle Tracking Analysis Detection. Molecules 2020; 25:E4703. [PMID: 33066514 DOI: 10.3390/molecules25204703] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/08/2020] [Accepted: 10/12/2020] [Indexed: 12/11/2022] Open
Abstract
Accurate physico-chemical characterization of exosomes and liposomes in biological media is challenging due to the inherent complexity of the sample matrix. An appropriate purification step can significantly reduce matrix interferences, and thus facilitate analysis of such demanding samples. Electrical Asymmetrical Flow Field-Flow Fractionation (EAF4) provides online sample purification while simultaneously enabling access to size and Zeta potential of sample constituents in the size range of approx. 1–1000 nm. Hyphenation of EAF4 with Multi-Angle Light Scattering (MALS) and Nanoparticle Tracking Analysis (NTA) detection adds high resolution size and number concentration information turning this setup into a powerful analytical platform for the comprehensive physico-chemical characterization of such challenging samples. We here present EAF4-MALS hyphenated with NTA for the analysis of liposomes and exosomes in complex, biological media. Coupling of the two systems was realized using a flow splitter to deliver the sample at an appropriate flow speed for the NTA measurement. After a proof-of-concept study using polystyrene nanoparticles, the combined setup was successfully applied to analyze liposomes and exosomes spiked into cell culture medium and rabbit serum, respectively. Obtained results highlight the benefits of the EAF4-MALS-NTA platform to study the behavior of these promising drug delivery vesicles under in vivo like conditions.
Collapse
|
38
|
Serrano-Pertierra E, Oliveira-Rodríguez M, Matos M, Gutiérrez G, Moyano A, Salvador M, Rivas M, Blanco-López MC. Extracellular Vesicles: Current Analytical Techniques for Detection and Quantification. Biomolecules 2020; 10:E824. [PMID: 32481493 PMCID: PMC7357140 DOI: 10.3390/biom10060824] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/24/2020] [Accepted: 05/25/2020] [Indexed: 02/06/2023] Open
Abstract
Since their first observation, understanding the biology of extracellular vesicles (EV) has been an important and challenging field of study. They play a key role in the intercellular communication and are involved in important physiological and pathological functions. Therefore, EV are considered as potential biomarkers for diagnosis, prognosis, and monitoring the response to treatment in some diseases. In addition, due to their properties, EV may be used for therapeutic purposes. In the study of EV, three major points have to be addressed: 1. How to isolate EV from cell culture supernatant/biological fluids, 2. how to detect them, and 3. how to characterize and quantify. In this review, we focus on the last two questions and provide the main analytical techniques up-to-date for detection and profiling of EV. We critically analyze the advantages and disadvantages of each one, aimed to be of relevance for all researchers working on EV biology and their potential applications.
Collapse
Affiliation(s)
- Esther Serrano-Pertierra
- Department of Physical and Analytical Chemistry, University of Oviedo, 33006 Oviedo, Spain; (E.S.-P.); (M.O.-R.); (A.M.)
- Instituto Universitario de Biotecnología de Asturias, University of Oviedo, 33006 Oviedo, Spain; (M.M.); (G.G.)
| | - Myriam Oliveira-Rodríguez
- Department of Physical and Analytical Chemistry, University of Oviedo, 33006 Oviedo, Spain; (E.S.-P.); (M.O.-R.); (A.M.)
| | - María Matos
- Instituto Universitario de Biotecnología de Asturias, University of Oviedo, 33006 Oviedo, Spain; (M.M.); (G.G.)
- Department of Chemical and Enviromental Engineering, University of Oviedo, 33006 Oviedo, Spain
| | - Gemma Gutiérrez
- Instituto Universitario de Biotecnología de Asturias, University of Oviedo, 33006 Oviedo, Spain; (M.M.); (G.G.)
- Department of Chemical and Enviromental Engineering, University of Oviedo, 33006 Oviedo, Spain
| | - Amanda Moyano
- Department of Physical and Analytical Chemistry, University of Oviedo, 33006 Oviedo, Spain; (E.S.-P.); (M.O.-R.); (A.M.)
- Instituto Universitario de Biotecnología de Asturias, University of Oviedo, 33006 Oviedo, Spain; (M.M.); (G.G.)
| | - María Salvador
- Department of Physics & IUTA, University of Oviedo, Campus de Viesques, 33204 Gijón, Spain; (M.S.); (M.R.)
| | - Montserrat Rivas
- Department of Physics & IUTA, University of Oviedo, Campus de Viesques, 33204 Gijón, Spain; (M.S.); (M.R.)
| | - María Carmen Blanco-López
- Department of Physical and Analytical Chemistry, University of Oviedo, 33006 Oviedo, Spain; (E.S.-P.); (M.O.-R.); (A.M.)
- Instituto Universitario de Biotecnología de Asturias, University of Oviedo, 33006 Oviedo, Spain; (M.M.); (G.G.)
| |
Collapse
|
39
|
Kumar P, Patel M, Thomas V, Knight J, Holmes RP, Mitchell T. Dietary Oxalate Induces Urinary Nanocrystals in Humans. Kidney Int Rep 2020; 5:1040-1051. [PMID: 32647761 PMCID: PMC7335953 DOI: 10.1016/j.ekir.2020.04.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/09/2020] [Accepted: 04/27/2020] [Indexed: 02/07/2023] Open
Abstract
Introduction Crystalluria is thought to be associated with kidney stone formation and can occur when urine becomes supersaturated with calcium, oxalate, and phosphate. The principal method used to identify urinary crystals is microscopy, with or without a polarized light source. This method can detect crystals above 1 μm in diameter (microcrystals). However, analyses of calcium oxalate kidney stones have indicated that crystallite components in these calculi are 50–100 nm in diameter. Recent studies have suggested that nanocrystals (<200 nm) elicit more injury to renal cells compared to microcrystals. The purpose of this study was to determine whether (i) urinary nanocrystals can be detected and quantified by nanoparticle tracking analysis (NTA, a high-resolution imaging technology), (ii) early-void urine samples from healthy subjects contain calcium nanocrystals, and (iii) a dietary oxalate load increases urinary nanocrystal formation. Methods Healthy subjects consumed a controlled low-oxalate diet for 3 days before a dietary oxalate load. Urinary crystals were isolated by centrifugation and assessed using NTA before and 5 hours after the oxalate load. The morphology and chemical composition of crystals was assessed using electron microscopy, Fourier-transform infrared spectroscopy (FTIR), and ion chromatography-mass spectrometry (IC–MS). Results Urinary calcium oxalate nanocrystals were detected in pre-load samples and increased substantially following the oxalate load. Conclusion These findings indicate that NTA can quantify urinary nanocrystals and that meals rich in oxalate can promote nanocrystalluria. NTA should provide valuable insight about the role of nanocrystals in kidney stone formation.
Collapse
Affiliation(s)
- Parveen Kumar
- Department of Urology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Mikita Patel
- Department of Urology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Vinoy Thomas
- Department of Materials Science and Engineering, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - John Knight
- Department of Urology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Ross P Holmes
- Department of Urology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Tanecia Mitchell
- Department of Urology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| |
Collapse
|
40
|
Bickmore DC, Miklavcic JJ. Characterization of Extracellular Vesicles Isolated From Human Milk Using a Precipitation-Based Method. Front Nutr 2020; 7:22. [PMID: 32232046 PMCID: PMC7082312 DOI: 10.3389/fnut.2020.00022] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 02/25/2020] [Indexed: 12/19/2022] Open
Abstract
Extracellular vesicles (EV) function in intercellular communication, and those in human milk may confer immunologic benefits to infants. Methods of EV isolation such as ultracentrifugation (UC) may not be feasible for the study of EVs in human milk due to the need for large sample volume. A technique to isolate EVs from a small volume of human milk using a precipitation reagent is described herein. Electron microscopy, nanoparticle tracking analysis, and semi-quantitative antibody array were conducted to confirm isolation of human milk EVs. Count, size, protein content, and fatty acid quantification of EVs were determined. This isolation technique yielded 8.9 x 109 (± 1.1 × 109) EV particles/mL of human milk. The present method meets the Minimal Information for Studies of Extracellular Vesicles (MISEV) guidelines. An established EV isolation method suitable for a low volume of human milk will facilitate further research in this growing area.
Collapse
Affiliation(s)
- Diana C Bickmore
- Food Science and Nutrition, Schmid College of Science and Technology, Chapman University, Orange, CA, United States
| | - John J Miklavcic
- Food Science and Nutrition, Schmid College of Science and Technology, Chapman University, Orange, CA, United States
- School of Pharmacy, Chapman University, Orange, CA, United States
| |
Collapse
|
41
|
Abenojar EC, Bederman I, Leon AC, Zhu J, Hadley J, Kolios MC, Exner AA. Theoretical and Experimental Gas Volume Quantification of Micro- and Nanobubble Ultrasound Contrast Agents. Pharmaceutics 2020; 12:E208. [PMID: 32121484 DOI: 10.3390/pharmaceutics12030208] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 02/21/2020] [Accepted: 02/25/2020] [Indexed: 02/07/2023] Open
Abstract
The amount of gas in ultrasound contrast agents is related to their acoustic activity. Because of this relationship, gas volume has been used as a key variable in normalizing the in vitro and in vivo acoustic behavior of lipid shell-stabilized bubbles with different sizes and shell components. Despite its importance, bubble gas volume has typically only been theoretically calculated based on bubble size and concentration that is typically measured using the Coulter counter for microbubbles and nanoparticle tracking analysis (NTA) for nanoscale bubbles. However, while these methods have been validated for the analysis of liquid or solid particles, their application in bubble analysis has not been rigorously studied. We have previously shown that resonant mass measurement (RMM) may be a better-suited technique for sub-micron bubble analysis, as it can measure both buoyant and non-buoyant particle size and concentration. Here, we provide validation of RMM bubble analysis by using headspace gas chromatography/mass spectrometry (GC/MS) to experimentally measure the gas volume of the bubble samples. This measurement was then used as ground truth to test the accuracy of theoretical gas volume predictions based on RMM, NTA (for nanobubbles), and Coulter counter (for microbubbles) measurements. The results show that the headspace GC/MS gas volume measurements agreed well with the theoretical predictions for the RMM of nanobubbles but not NTA. For nanobubbles, the theoretical gas volume using RMM was 10% lower than the experimental GC/MS measurements; meanwhile, using NTA resulted in an 82% lower predicted gas volume. For microbubbles, the experimental gas volume from the GC/MS measurements was 27% lower compared to RMM and 72% less compared to the Coulter counter results. This study demonstrates that the gas volume of nanobubbles and microbubbles can be reliably measured using headspace GC/MS to validate bubble size measurement techniques. We also conclude that the accuracy of theoretical predictions is highly dependent on proper size and concentration measurements.
Collapse
|
42
|
Mariani J, Favero C, Carugno M, Pergoli L, Ferrari L, Bonzini M, Cattaneo A, Pesatori AC, Bollati V. Nasal Microbiota Modifies the Effects of Particulate Air Pollution on Plasma Extracellular Vesicles. Int J Environ Res Public Health 2020; 17:ijerph17020611. [PMID: 31963616 PMCID: PMC7013854 DOI: 10.3390/ijerph17020611] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/13/2020] [Accepted: 01/15/2020] [Indexed: 12/12/2022]
Abstract
Air pollution exposure has been linked to modifications of both extracellular vesicle (EV) concentration and nasal microbiota structure (NMB), which might act as the respiratory health gatekeeper. This study aimed to assess whether an unbalanced NMB could modify the effect of particulate matter (PM) exposure on plasmatic EV levels. Due to two different NMB taxonomical profiles characterized by a widely different relative abundance of the Moraxella genus, the enrolled population was stratified into Mor- (balanced NMB) and Mor+ (unbalanced NMB) groups (Moraxella genus's cut-off ≤25% and >25%, respectively). EV features were assessed by nanoparticle tracking analysis (NTA) and flow-cytometry (FC). Multivariable analyses were applied on EV outcomes to evaluate a possible association between PM10 and PM2.5 and plasmatic EV levels. The Mor- group revealed positive associations between PM levels and plasmatic CD105+ EVs (GMR = 4.39 p = 0.02) as for total EV count (GMR = 1.92 p = 0.02). Conversely, the Mor+ group showed a negative association between exposure and EV outcomes (CD66+ GMR = 0.004 p = 0.01; EpCAM+ GMR = 0.005 p = 0.01). Our findings provide an insight regarding how a balanced NMB may help to counteract PM exposure effects in terms of plasmatic EV concentration. Further research is necessary to understand the relationship between the host and the NMB to disentangle the mechanism exerted by inhaled pollutants in modulating EVs and NMB.
Collapse
Affiliation(s)
- Jacopo Mariani
- EPIGET LAB, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milan, Italy; (J.M.); (C.F.); (M.C.); (L.P.); (L.F.); (M.B.); (A.C.P.)
| | - Chiara Favero
- EPIGET LAB, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milan, Italy; (J.M.); (C.F.); (M.C.); (L.P.); (L.F.); (M.B.); (A.C.P.)
| | - Michele Carugno
- EPIGET LAB, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milan, Italy; (J.M.); (C.F.); (M.C.); (L.P.); (L.F.); (M.B.); (A.C.P.)
| | - Laura Pergoli
- EPIGET LAB, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milan, Italy; (J.M.); (C.F.); (M.C.); (L.P.); (L.F.); (M.B.); (A.C.P.)
| | - Luca Ferrari
- EPIGET LAB, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milan, Italy; (J.M.); (C.F.); (M.C.); (L.P.); (L.F.); (M.B.); (A.C.P.)
| | - Matteo Bonzini
- EPIGET LAB, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milan, Italy; (J.M.); (C.F.); (M.C.); (L.P.); (L.F.); (M.B.); (A.C.P.)
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Andrea Cattaneo
- Department of Science and High Technology, University of Insubria, 22100 Como, Italy;
| | - Angela Cecilia Pesatori
- EPIGET LAB, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milan, Italy; (J.M.); (C.F.); (M.C.); (L.P.); (L.F.); (M.B.); (A.C.P.)
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Valentina Bollati
- EPIGET LAB, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milan, Italy; (J.M.); (C.F.); (M.C.); (L.P.); (L.F.); (M.B.); (A.C.P.)
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
- Correspondence: ; Tel.: +39-02-503-20147
| |
Collapse
|
43
|
Panagopoulou MS, Wark AW, Birch DJS, Gregory CD. Phenotypic analysis of extracellular vesicles: a review on the applications of fluorescence. J Extracell Vesicles 2020; 9:1710020. [PMID: 32002172 PMCID: PMC6968689 DOI: 10.1080/20013078.2019.1710020] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 12/18/2019] [Accepted: 12/21/2019] [Indexed: 12/22/2022] Open
Abstract
Extracellular vesicles (EVs) have numerous potential applications in the field of healthcare and diagnostics, and research into their biological functions is rapidly increasing. Mainly because of their small size and heterogeneity, there are significant challenges associated with their analysis and despite overt evidence of the potential of EVs in clinical diagnostic practice, guidelines for analytical procedures have not yet been properly established. Here, we present an overview of the main methods for studying the properties of EVs based on the principles of fluorescence. Setting aside the isolation, purification and physicochemical characterization strategies which answer questions about the size, surface charge and stability of EVs (reviewed elsewhere), we focus on available optical tools that enable the direct analysis of phenotype and mechanisms of interaction with tissues. In brief, the topics on which we elaborate range from the most popular approaches such as nanoparticle tracking analysis and flow cytometry, to less commonly used techniques such as fluorescence depolarization and microarrays as well as emerging areas such as fast fluorescence lifetime imaging microscopy (FLIM). We highlight that understanding the strengths and limitations of each method is essential for choosing the most appropriate combination of analytical tools. Finally, future directions of this rapidly developing area of medical diagnostics are discussed.
Collapse
Affiliation(s)
- Maria S. Panagopoulou
- University of Edinburgh Centre for Inflammation Research, The Queen’s Medical Research Institute, Edinburgh, UK
| | - Alastair W. Wark
- Centre for Molecular Nanometrology, Technology and Innovation Centre, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK
| | - David J S Birch
- Photophysics Group, Department of Physics, SUPA, University of Strathclyde, Glasgow, UK
| | - Christopher D. Gregory
- University of Edinburgh Centre for Inflammation Research, The Queen’s Medical Research Institute, Edinburgh, UK
| |
Collapse
|
44
|
Yaghmur A, Tran BV, Moghimi SM. Non-Lamellar Liquid Crystalline Nanocarriers for Thymoquinone Encapsulation. Molecules 2019; 25:E16. [PMID: 31861549 DOI: 10.3390/molecules25010016] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/16/2019] [Accepted: 12/17/2019] [Indexed: 01/09/2023] Open
Abstract
Owing to their unique structural features, non-lamellar liquid crystalline nanoparticles comprising cubosomes and hexosomes are attracting increasing attention as versatile investigative drug carriers. Background: Depending on their physiochemical characteristics, drug molecules on entrapment can modulate and reorganize structural features of cubosomes and hexosomes. Therefore, it is important to assess the effect of guest molecules on broader biophysical characteristics of non-lamellar liquid crystalline nanoparticles, since drug-induced architectural, morphological, and size modifications can affect the biological performance of cubosomes and hexosomes. Methods: We report on alterations in morphological, structural, and size characteristics of nanodispersions composed from binary mixtures of glycerol monooleate and vitamin E on thymoquinone (a molecule with wide therapeutic potentials) loading. Results: Thymoquinone loading was associated with a slight increase in the mean hydrodynamic nanoparticle size and led to structural transitions from an internal biphasic feature of coexisting inverse cubic Fd3m and hexagonal (H2) phases to an internal inverse cubic Fd3m phase (micellar cubosomes) or an internal inverse micellar (L2) phase (emulsified microemulsions, EMEs). We further report on the presence of “flower-like” vesicular populations in both native and drug-loaded nanodispersions. Conclusions: These nanodispersions have the potential to accommodate thymoquinone and may be considered as promising platforms for the development of thymoquinone nanomedicines.
Collapse
|
45
|
Pereira Aguilar P, González-Domínguez I, Schneider TA, Gòdia F, Cervera L, Jungbauer A. At-line multi-angle light scattering detector for faster process development in enveloped virus-like particle purification. J Sep Sci 2019; 42:2640-2649. [PMID: 31169979 PMCID: PMC6771681 DOI: 10.1002/jssc.201900441] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 06/04/2019] [Accepted: 06/04/2019] [Indexed: 12/05/2022]
Abstract
At‐line static light scattering and fluorescence monitoring allows direct in‐process tracking of fluorescent virus‐like particles. We have demonstrated this by coupling at‐line multi‐angle light scattering and fluorescence detectors to the downstream processing of enveloped virus‐like particles. Since light scattering intensity is directly proportional to particle concentration, our strategy allowed a swift identification of product containing fractions and rapid process development. Virus‐like particles containing the Human Immunodeficiency Virus‐1 Gag protein fused to the Green Fluorescence protein were produced in Human Embryonic Kidney 293 cells by transient transfection. A single‐column anion‐exchange chromatography method was used for direct capture and purification. The majority of host‐cell protein impurities passed through the column without binding. Virus‐like particles bound to the column were eluted by linear or step salt gradients. Particles recovered in the step gradient purification were characterized by nanoparticle tracking analysis, size exclusion chromatography coupled to multi‐angle light scattering and fluorescence detectors and transmission electron microscopy. A total recovery of 66% for the fluorescent particles was obtained with a 50% yield in the main product peak. Virus‐like particles were concentrated 17‐fold to final a concentration of 4.45 × 1010 particles/mL. Simple buffers and operation make this process suitable for large scale purposes.
Collapse
Affiliation(s)
| | - Irene González-Domínguez
- Department d'Enginyeria Química Biològica i Ambiental, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | | | - Francesc Gòdia
- Department d'Enginyeria Química Biològica i Ambiental, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Laura Cervera
- Department d'Enginyeria Química Biològica i Ambiental, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Alois Jungbauer
- Department of Biotechnology, University of Natural Resources and Life Sciences, Vienna, Austria.,Austrian Centre of Industrial Biotechnology, Vienna, Austria
| |
Collapse
|
46
|
Li S, Wilkinson KL, Mierczynska-Vasilev A, Bindon KA. Applying Nanoparticle Tracking Analysis to Characterize the Polydispersity of Aggregates Resulting from Tannin-Polysaccharide Interactions in Wine-Like Media. Molecules 2019; 24:molecules24112100. [PMID: 31163608 PMCID: PMC6600421 DOI: 10.3390/molecules24112100] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 05/28/2019] [Accepted: 05/29/2019] [Indexed: 01/24/2023] Open
Abstract
Interactions between grape seed tannin and either a mannoprotein or an arabinogalactan in model wine solutions of different ethanol concentrations were characterized with nanoparticle tracking analysis (NTA), UV-visible spectroscopy and dynamic light scattering (DLS). NTA results reflected a shift in particle size distribution due to aggregation. Furthermore, the light scattering intensity of each tracked particle measured by NTA demonstrated the presence of aggregates, even when a shift in particle size was not apparent. Mannoprotein and arabinogalactan behaved differently when combined with seed tannin. Mannoprotein formed large, highly light-scattering aggregates, while arabinogalactan exhibited only weak interactions with seed tannin. A 3% difference in alcohol concentration of the model solution (12 vs. 15% v/v) was sufficient to affect the interactions between mannoprotein and tannin when the tannin concentration was high. In summary, this study showed that NTA is a promising tool for measuring polydisperse samples of grape and wine macromolecules, and their aggregates under wine-like conditions. The implications for wine colloidal properties are discussed based on these results.
Collapse
Affiliation(s)
- Sijing Li
- School of Agriculture, Food and Wine, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia.
- The Australian Research Council Training Centre for Innovative Wine Production, PMB 1, Glen Osmond, SA 5064, Australia.
| | - Kerry L Wilkinson
- School of Agriculture, Food and Wine, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia.
- The Australian Research Council Training Centre for Innovative Wine Production, PMB 1, Glen Osmond, SA 5064, Australia.
| | | | - Keren A Bindon
- The Australian Wine Research Institute, PO Box 197, Glen Osmond, SA 5064, Australia.
| |
Collapse
|
47
|
Bachurski D, Schuldner M, Nguyen PH, Malz A, Reiners KS, Grenzi PC, Babatz F, Schauss AC, Hansen HP, Hallek M, Pogge von Strandmann E. Extracellular vesicle measurements with nanoparticle tracking analysis - An accuracy and repeatability comparison between NanoSight NS300 and ZetaView. J Extracell Vesicles 2019; 8:1596016. [PMID: 30988894 PMCID: PMC6450530 DOI: 10.1080/20013078.2019.1596016] [Citation(s) in RCA: 254] [Impact Index Per Article: 50.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 02/14/2019] [Accepted: 03/03/2019] [Indexed: 12/13/2022] Open
Abstract
The expanding field of extracellular vesicle (EV) research needs reproducible and accurate methods to characterize single EVs. Nanoparticle Tracking Analysis (NTA) is commonly used to determine EV concentration and diameter. As the EV field is lacking methods to easily confirm and validate NTA data, questioning the reliability of measurements remains highly important. In this regard, a comparison addressing measurement quality between different NTA devices such as Malvern’s NanoSight NS300 or Particle Metrix’ ZetaView has not yet been conducted. To evaluate the accuracy and repeatability of size and concentration determinations of both devices, we employed comparative methods including transmission electron microscopy (TEM) and single particle interferometric reflectance imaging sensing (SP-IRIS) by ExoView. Multiple test measurements with nanospheres, liposomes and ultracentrifuged EVs from human serum and cell culture supernatant were performed. Additionally, serial dilutions and freeze-thaw cycle-dependent EV decrease were measured to determine the robustness of each system. Strikingly, NanoSight NS300 exhibited a 2.0–2.1-fold overestimation of polystyrene and silica nanosphere concentration. By measuring serial dilutions of EV samples, we demonstrated higher accuracy in concentration determination by ZetaView (% BIAS range: 2.7–8.5) in comparison with NanoSight NS300 (% BIAS range: 32.9–36.8). The concentration measurements by ZetaView were also more precise (% CV range: 0.0–4.7) than measurements by NanoSight NS300 (% CV range: 5.4–10.7). On the contrary, quantitative TEM imaging indicated more accurate EV sizing by NanoSight NS300 (% DTEM range: 79.5–134.3) compared to ZetaView (% DTEM range: 111.8–205.7), while being equally repeatable (NanoSight NS300% CV range: 0.8–6.7; ZetaView: 1.4–7.8). However, both devices failed to report a peak EV diameter below 60 nm compared to TEM and SP-IRIS. Taken together, NTA devices differ strongly in their hardware and software affecting measuring results. ZetaView provided a more accurate and repeatable depiction of EV concentration, whereas NanoSight NS300 supplied size measurements of higher resolution.
Collapse
Affiliation(s)
- Daniel Bachurski
- Department I of Internal Medicine, University Hospital of Cologne, Center for Integrated Oncology Cologne-Bonn, CECAD Center of Excellence on ''Cellular Stress Responses in Aging-Associated Diseases'', Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
| | - Maximiliane Schuldner
- Department I of Internal Medicine, University of Cologne, Cologne, Germany.,Experimental Tumor Research, Center for Tumor Biology and Immunology, Department of Hematology, Oncology and Immunology, Philipps University Marburg, Marburg, Germany
| | - Phuong-Hien Nguyen
- Department I of Internal Medicine, University Hospital of Cologne, Center for Integrated Oncology Cologne-Bonn, CECAD Center of Excellence on ''Cellular Stress Responses in Aging-Associated Diseases'', Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
| | - Alexandra Malz
- Experimental Tumor Research, Center for Tumor Biology and Immunology, Department of Hematology, Oncology and Immunology, Philipps University Marburg, Marburg, Germany
| | - Katrin S Reiners
- Department I of Internal Medicine, University of Cologne, Cologne, Germany.,Institute for Clinical Chemistry and Clinical Pharmacology, University of Bonn, Bonn, Germany
| | - Patricia C Grenzi
- Department I of Internal Medicine, University of Cologne, Cologne, Germany
| | - Felix Babatz
- CECAD Center of Excellence on ''Cellular Stress Responses in Aging-Associated Diseases'', University of Cologne, Cologne, Germany
| | - Astrid C Schauss
- CECAD Center of Excellence on ''Cellular Stress Responses in Aging-Associated Diseases'', University of Cologne, Cologne, Germany
| | - Hinrich P Hansen
- Department I of Internal Medicine, University Hospital of Cologne, Center for Integrated Oncology Cologne-Bonn, CECAD Center of Excellence on ''Cellular Stress Responses in Aging-Associated Diseases'', Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
| | - Michael Hallek
- Department I of Internal Medicine, University Hospital of Cologne, Center for Integrated Oncology Cologne-Bonn, CECAD Center of Excellence on ''Cellular Stress Responses in Aging-Associated Diseases'', Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
| | - Elke Pogge von Strandmann
- Experimental Tumor Research, Center for Tumor Biology and Immunology, Department of Hematology, Oncology and Immunology, Philipps University Marburg, Marburg, Germany
| |
Collapse
|
48
|
Amaro-Gahete J, Benítez A, Otero R, Esquivel D, Jiménez-Sanchidrián C, Morales J, Caballero Á, Romero-Salguero FJ. A Comparative Study of Particle Size Distribution of Graphene Nanosheets Synthesized by an Ultrasound-Assisted Method. Nanomaterials (Basel) 2019; 9:nano9020152. [PMID: 30691102 PMCID: PMC6409618 DOI: 10.3390/nano9020152] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 01/20/2019] [Accepted: 01/23/2019] [Indexed: 12/12/2022]
Abstract
Graphene-based materials are highly interesting in virtue of their excellent chemical, physical and mechanical properties that make them extremely useful as privileged materials in different industrial applications. Sonochemical methods allow the production of low-defect graphene materials, which are preferred for certain uses. Graphene nanosheets (GNS) have been prepared by exfoliation of a commercial micrographite (MG) using an ultrasound probe. Both materials were characterized by common techniques such as X-ray diffraction (XRD), Transmission Electronic Microscopy (TEM), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). All of them revealed the formation of exfoliated graphene nanosheets with similar surface characteristics to the pristine graphite but with a decreased crystallite size and number of layers. An exhaustive study of the particle size distribution was carried out by different analytical techniques such as dynamic light scattering (DLS), nanoparticle tracking analysis (NTA) and asymmetric flow field flow fractionation (AF4). The results provided by these techniques have been compared. NTA and AF4 gave higher resolution than DLS. AF4 has shown to be a precise analytical technique for the separation of GNS of different sizes.
Collapse
Affiliation(s)
- Juan Amaro-Gahete
- Departamento de Química Orgánica, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Almudena Benítez
- Departamento de Química Inorgánica e Ingeniería Química, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Rocío Otero
- Departamento de Química Inorgánica e Ingeniería Química, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Dolores Esquivel
- Departamento de Química Orgánica, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - César Jiménez-Sanchidrián
- Departamento de Química Orgánica, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Julián Morales
- Departamento de Química Inorgánica e Ingeniería Química, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Álvaro Caballero
- Departamento de Química Inorgánica e Ingeniería Química, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Francisco J Romero-Salguero
- Departamento de Química Orgánica, Instituto Universitario de Investigación en Química Fina y Nanoquímica, Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| |
Collapse
|
49
|
Serrano-Pertierra E, Oliveira-Rodríguez M, Rivas M, Oliva P, Villafani J, Navarro A, Blanco-López MC, Cernuda-Morollón E. Characterization of Plasma-Derived Extracellular Vesicles Isolated by Different Methods: A Comparison Study. Bioengineering (Basel) 2019; 6:bioengineering6010008. [PMID: 30658418 PMCID: PMC6466225 DOI: 10.3390/bioengineering6010008] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/08/2019] [Accepted: 01/11/2019] [Indexed: 12/19/2022] Open
Abstract
Extracellular vesicles (EV) are small membrane structures released by cells that act as potent mediators of intercellular communication. The study of EV biology is important, not only to strengthen our knowledge of their physiological roles, but also to better understand their involvement in several diseases. In the field of biomedicine they have been studied as a novel source of biomarkers and drug delivery vehicles. The most commonly used method for EV enrichment in crude pellet involves serial centrifugation and ultracentrifugation. Recently, different protocols and techniques have been developed to isolate EV that imply less time and greater purification. Here we carry out a comparative analysis of three methods to enrich EV from plasma of healthy controls: ultracentrifugation, ExoQuickTM precipitation solution (System Biosciences), and Total Exosome Isolation kit (Invitrogen). Our results show that commercial precipitation reagents are more efficient and enable higher EV enrichment factors compared with traditional ultracentrifugation, although subsequent imaging analysis is not possible with some of them. We hope that this work will contribute to the current research on isolation techniques to assist the progress of clinical applications with diagnostic or therapeutic objectives.
Collapse
Affiliation(s)
- Esther Serrano-Pertierra
- Department of Chemical and Enviromental Engineering, Faculty of Chemistry, University of Oviedo, 33006 Oviedo, Spain.
| | - Myriam Oliveira-Rodríguez
- Department of Analytical and Physical Chemistry, Faculty of Chemistry, University of Oviedo, 33006 Oviedo, Spain.
| | - Montserrat Rivas
- Department of Physics, Gijón Polytechnic School of Engineering, University of Oviedo, 33006 Oviedo, Spain.
| | - Pedro Oliva
- Neurology Department, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain.
| | - Javier Villafani
- Neurology Department, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain.
| | - Ana Navarro
- Department of Morphology and Cellular Biology, Instituto de Neurociencias del Principado de Asturias (INEUROPA), University of Oviedo, 33006 Oviedo, Spain.
| | - M Carmen Blanco-López
- Department of Analytical and Physical Chemistry, Faculty of Chemistry, University of Oviedo, 33006 Oviedo, Spain.
| | - Eva Cernuda-Morollón
- Neurology Department, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain.
| |
Collapse
|
50
|
Lehrich BM, Liang Y, Khosravi P, Federoff HJ, Fiandaca MS. Fetal Bovine Serum-Derived Extracellular Vesicles Persist within Vesicle-Depleted Culture Media. Int J Mol Sci 2018; 19:E3538. [PMID: 30423996 DOI: 10.3390/ijms19113538] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 11/05/2018] [Indexed: 12/02/2022] Open
Abstract
It is known that culture media (CM) promotes cellular growth, adhesion, and protects explanted primary brain cells from in vitro stresses. The fetal bovine serum (FBS) supplement used in most CM, however, contains significant quantities of extracellular vesicles (EVs) that confound quantitative and qualitative analyses from the EVs produced by the cultured cells. We quantitatively tested the ability of common FBS EV-depletion protocols to remove exogenous EVs from FBS-supplemented CM and evaluated the influence such methods have on primary astrocyte culture growth and viability. We assessed two methodologies utilized for FBS EV removal prior to adding to CM: (1) an 18-h ultracentrifugation (UC); and (2) a commercial EV-depleted FBS (Exo-FBS™). Our analysis demonstrated that Exo-FBS™ CM provided the largest depletion (75%) of total FBS EVs, while still providing 6.92 × 109 ± 1.39 × 108 EVs/mL. In addition, both UC and Exo-FBS™ CM resulted in poor primary astrocyte cell growth and viability in culture. The two common FBS EV-depletion methods investigated, therefore, not only contaminate in vitro primary cell-derived EV analyses, but also provide a suboptimal environment for primary astrocyte cell growth and viability. It appears likely that future CM optimization, using a serum-free alternative, might be required to advance analyses of cell-specific EVs isolated in vitro.
Collapse
|