1
|
Zanoni I, Marassi V, Zattoni A, Roda B, Casolari S, Ortelli S, Blosi M, Costa AL. A multi-technique analytical approach to support (eco)toxicological investigation of zinc oxide nanoparticles. J Chromatogr A 2024; 1735:465331. [PMID: 39241403 DOI: 10.1016/j.chroma.2024.465331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 08/29/2024] [Accepted: 08/30/2024] [Indexed: 09/09/2024]
Abstract
Understanding the mechanism of toxicity of nanoparticles and their behavior in biological environments is crucial for designing materials with reduced side effects and improved performance. Among the factors influencing nanoparticle behavior in biological environments, the release and bioavailability of potentially toxic metal ions can alter equilibria and cause adverse effects. In this study, we applied two on-line Field-Flow Fractionation (FFF) strategies and compared the results with off-line benchmarking centrifugal ultrafiltration to assess a key descriptor, namely the solubility of zinc oxide (ZnO) nanoparticles. We found that, at the highest nanoparticle concentrations, the nanoparticle-ion ratio quickly reaches equilibrium, and the stability is not significantly affected by the separation technique. However, at lower concentrations, dynamic, non-equilibrium behavior occurs, and the results depend on the method used to separate the solid from the ionic fraction, where FFF yielded a more representative dissolution pattern. To support the (eco)toxicological profiling of the investigated nanoparticles, we generated experimental data on colloidal stability over typical (eco)toxicological assay durations. The Zeta Potential vs pH curves revealed two distinct scenarios typical of surfaces that have undergone significant modification, most likely due to pH-dependent dissolution and re-precipitation of surface groups. Finally, to enhance hazard assessment screening, we investigated ion-dependent toxicity and the effects of exposure to fresh water. Using an in vitro human skin model, we evaluated the cytotoxicity of fresh and aged ZnO nanoparticles (exposed for 72 h in M7), revealing time-dependent, dose-dependent, and nanoparticle-dependent cytotoxicity, with lower toxicity observed in the case of aged samples.
Collapse
Affiliation(s)
- Ilaria Zanoni
- CNR-ISSMC- Institute of Science, Technology and Sustainability for Ceramics (ISSMC), Via Granarolo 64, I-48018, Faenza, RA, Italy
| | - Valentina Marassi
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126, Bologna, Italy; byFlow srl, 40129, Bologna, Italy.
| | - Andrea Zattoni
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126, Bologna, Italy; byFlow srl, 40129, Bologna, Italy
| | - Barbara Roda
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126, Bologna, Italy; byFlow srl, 40129, Bologna, Italy
| | - Sonia Casolari
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126, Bologna, Italy
| | - Simona Ortelli
- CNR-ISSMC- Institute of Science, Technology and Sustainability for Ceramics (ISSMC), Via Granarolo 64, I-48018, Faenza, RA, Italy
| | - Magda Blosi
- CNR-ISSMC- Institute of Science, Technology and Sustainability for Ceramics (ISSMC), Via Granarolo 64, I-48018, Faenza, RA, Italy
| | - Anna Luisa Costa
- CNR-ISSMC- Institute of Science, Technology and Sustainability for Ceramics (ISSMC), Via Granarolo 64, I-48018, Faenza, RA, Italy.
| |
Collapse
|
2
|
Striegel AM. On-line coupling of hollow-fiber flow field-flow fractionation and depolarized multi-angle static light scattering (HF5/D-MALS). Proof of principle. J Chromatogr A 2024; 1730:465115. [PMID: 38936166 PMCID: PMC11345793 DOI: 10.1016/j.chroma.2024.465115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 06/20/2024] [Accepted: 06/22/2024] [Indexed: 06/29/2024]
Abstract
Introduced here is the on-line coupling of hollow-fiber flow field-flow fractionation (HF5) to depolarized multi-angle static light scattering (D-MALS). HF5 is a size-based separation alternative to size-exclusion and hydrodynamic chromatography and asymmetric flow field-flow fractionation. HF5 can separate larger sizes than its chromatographic counterparts and provides several advantages over its fractionation counterpart, including reduced sample consumption and greater ease of operation. D-MALS is a variant of MALS in which the depolarized scattering from the analyte solution is measured at a variety of angles simultaneously. Measurements of depolarized scattering have previously been employed in studying the optical properties of solutions or suspensions, to determine the length of rod-like analytes, and to gain increased accuracy in the determination of analyte molar mass. The coupling HF5/D-MALS allows for the depolarization ratio of a solution or suspension to be measured continuously across the fractogram. This is demonstrated here for a Teflon latex the size range of which extends beyond that accessible to commercial size-exclusion columns. The results presented provide the first reported on-line HF5/D-MALS coupling, showing the feasibility of the technique as well as its realized potential for providing continuous depolarization measurements, inter alia.
Collapse
Affiliation(s)
- André M Striegel
- Chemical Sciences Division, National Institute of Standards and Technology (NIST), 100 Bureau Drive, MS 8390, Gaithersburg, MD 20899-8390, USA.
| |
Collapse
|
3
|
Tan Z, Chen Q, Yin Y, Liu Y, Lin Y, Bai Q, Wu M, Yao W, Xu S, Liu J. Tracking the dissolution behavior of zinc oxide nanoparticles in skimmed milk powder solutions. Food Chem 2021; 365:130520. [PMID: 34252623 DOI: 10.1016/j.foodchem.2021.130520] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 06/29/2021] [Accepted: 06/30/2021] [Indexed: 10/21/2022]
Abstract
Zinc oxide nanoparticles (ZnO NPs) are recently recommended as food additives owing to their outstanding nutritive function. Therefore, understanding their comprehensive information and stability in food samples is highly necessitated. However, the characterization of ZnO NPs in the complex food matrices remains a great challenge, limiting an in-depth understanding of their transformation during food storage. In this study, the hollow fiber flow field-flow fractionation was combined with UV-Vis absorption spectroscopy and inductively coupled plasma optical emission spectroscopy to assess the dissolution behaviors of ZnO NPs in skimmed milk powder solutions by monitoring the changes in the residual ZnO NPs and the amount of dissolved Zn(II) ions. The simultaneous characterization of these two Zn species in skimmed milk powder solutions was achieved without the need for tedious sample pretreatments, and the dissolution of ZnO NPs in skimmed milk powder solutions had time- and temperature-dependent behaviors.
Collapse
Affiliation(s)
- Zhiqiang Tan
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, Zhejiang Province, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Qiang Chen
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, Sichuan Province, China
| | - Yongguang Yin
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, Zhejiang Province, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yanwanjing Liu
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, Zhejiang Province, China
| | - Yaohui Lin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Qingsheng Bai
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Mengxin Wu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Weirong Yao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China
| | - Shuxia Xu
- College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, Sichuan Province, China.
| | - Jingfu Liu
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, Zhejiang Province, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| |
Collapse
|
4
|
Asymmetric Flow Field-Flow Fractionation: Current Status, Possibilities, Analytical Limitations and Future Trends. Chromatographia 2021. [DOI: 10.1007/s10337-021-04035-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
5
|
Marassi V, De Marchis F, Roda B, Bellucci M, Capecchi A, Reschiglian P, Pompa A, Zattoni A. Perspectives on protein biopolymers: miniaturized flow field-flow fractionation-assisted characterization of a single-cysteine mutated phaseolin expressed in transplastomic tobacco plants. J Chromatogr A 2021; 1637:461806. [PMID: 33360435 DOI: 10.1016/j.chroma.2020.461806] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 12/08/2020] [Accepted: 12/10/2020] [Indexed: 01/17/2023]
Abstract
The development of plant-based protein polymers to employ in biofilm production represents the promising intersection between material science and sustainability, and allows to obtain biodegradable materials that also possess excellent physicochemical properties. A possible candidate for protein biopolymer production is phaseolin, a storage protein highly abundant in P Vulgaris beans. We previously showed that transformed tobacco chloroplasts could be employed to express a mutated phaseolin carrying a signal peptide (directing it into the thylakoids) also enriched of a cysteine residue added to its C-terminal region. This modification allows for the formation of inter-chain disulfide bonds, as we previously demonstrated, and should promote polymerization. To verify the effect of the peptide modification and to quantify polymer formation, we employed hollow-fiber flow field-flow fractionation coupled to UV and multi-angle laser scattering detection (HF5-UV-MALS): HF5 allows for the selective size-based separation of phaseolin species, whereas MALS calculates molar mass and conformation state of each population. With the use of two different HF5 separation methods we first observed the native state of P.Vulgaris phaseolin, mainly assembled into trimers, and compared it to mutated phaseolin (P*) which instead resulted highly aggregated. Then we further characterized P* using a second separation method, discriminating between two and distinct high-molecular weight (HMW) species, one averaging 0.8 × 106 Da and the second reaching the tens of million Da. Insight on the conformation of these HMW species was offered from their conformation plots, which confirmed the positive impact of the Cys modification on polymerization.
Collapse
Affiliation(s)
- Valentina Marassi
- Department of Chemistry G. Ciamician, University of Bologna, Bologna, Italy; byFlow srl, via dell'Arcoveggio 74, 40128 Bologna (BO), Italy
| | - Francesca De Marchis
- Institute of Biosciences and Bioresources-Research Division of Perugia, National Research Council of Italy, via della Madonna Alta 130, 06128, Perugia (PG), Italy
| | - Barbara Roda
- Department of Chemistry G. Ciamician, University of Bologna, Bologna, Italy; byFlow srl, via dell'Arcoveggio 74, 40128 Bologna (BO), Italy
| | - Michele Bellucci
- Institute of Biosciences and Bioresources-Research Division of Perugia, National Research Council of Italy, via della Madonna Alta 130, 06128, Perugia (PG), Italy
| | - Alice Capecchi
- Institute of Biosciences and Bioresources-Research Division of Perugia, National Research Council of Italy, via della Madonna Alta 130, 06128, Perugia (PG), Italy
| | - Pierluigi Reschiglian
- Department of Chemistry G. Ciamician, University of Bologna, Bologna, Italy; byFlow srl, via dell'Arcoveggio 74, 40128 Bologna (BO), Italy
| | - Andrea Pompa
- Department of Biomolecular Sciences, University of Urbino "Carlo Bo", via Donato Bramante 28, 61029 Urbino (PU), Italy
| | - Andrea Zattoni
- Department of Chemistry G. Ciamician, University of Bologna, Bologna, Italy; byFlow srl, via dell'Arcoveggio 74, 40128 Bologna (BO), Italy.
| |
Collapse
|
6
|
Marassi V, Beretti F, Roda B, Alessandrini A, Facci P, Maraldi T, Zattoni A, Reschiglian P, Portolani M. A new approach for the separation, characterization and testing of potential prionoid protein aggregates through hollow-fiber flow field-flow fractionation and multi-angle light scattering. Anal Chim Acta 2019; 1087:121-130. [PMID: 31585560 DOI: 10.1016/j.aca.2019.08.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/27/2019] [Accepted: 08/01/2019] [Indexed: 12/14/2022]
Abstract
Protein misfolding and aggregation are the common mechanisms in a variety of aggregation-dependent diseases. The compromised proteins often assemble into toxic, accumulating amyloid-like structures of various lengths and their toxicity can also be transferred both in vivo and in vitro a prion-like behavior. The characterization of protein interactions, degradation and conformational dynamics in biological systems still represents an analytical challenge in the prion-like protein comprehension. In our work, we investigated the nature of a transferable cytotoxic agent, presumably a misfolded protein, through the coupling of a multi-detector, non-destructive separation platform based on hollow-fiber flow field-flow fractionation with imaging and downstream in vitro tests. After purification with ion exchange chromatography, the transferable cytotoxic agentwas analyzed with Atomic Force Microscopy and statistical analysis, showing that the concentration of protein dimers and low n-oligomer forms was higher in the cytotoxic sample than in the control preparation. To assess whether the presence of these species was the actual toxic and/or self-propagating factor, we employed HF5 fractionation, with UV and Multi-Angle Light Scattering detection, to define proteins molar mass distribution and abundance, and fractionate the sample into size-homogeneous fractions. These fractions were then tested individually in vitro to investigate the direct correlation with cytotoxicity. Only the later-eluted fraction, which contains high-molar mass aggregates, proved to be toxic onto cell cultures. Moreover, it was observed that the selective transfer of toxicity also occurs for one lower-mass fraction, suggesting that two different mechanisms, acute and later induced toxicity, are in place. These results strongly encourage the efficacy of this platform to enable the identification of protein toxicants.
Collapse
Affiliation(s)
- Valentina Marassi
- Department of Chemistry G. Ciamician, University of Bologna, Via Selmi 2, 40126, Bologna, Italy; ByFlow Srl, Via dell'Arcoveggio 74, 40129, Bologna, Italy
| | - Francesca Beretti
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Via del Pozzo, 71, 41124, Modena, Italy
| | - Barbara Roda
- Department of Chemistry G. Ciamician, University of Bologna, Via Selmi 2, 40126, Bologna, Italy; ByFlow Srl, Via dell'Arcoveggio 74, 40129, Bologna, Italy.
| | - Andrea Alessandrini
- CNR-Istituto Nanoscienze, S3, Via Campi 213/A, 41125, Modena, Italy; Department of Physics, Informatics and Mathematics, University of Modena and Reggio Emilia, Via Campi 213/A, 41125, Modena, Italy
| | - Paolo Facci
- CNR-Istituto Nanoscienze, S3, Via Campi 213/A, 41125, Modena, Italy; Department of Physics, Informatics and Mathematics, University of Modena and Reggio Emilia, Via Campi 213/A, 41125, Modena, Italy
| | - Tullia Maraldi
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Via del Pozzo, 71, 41124, Modena, Italy
| | - Andrea Zattoni
- Department of Chemistry G. Ciamician, University of Bologna, Via Selmi 2, 40126, Bologna, Italy; ByFlow Srl, Via dell'Arcoveggio 74, 40129, Bologna, Italy
| | - Pierluigi Reschiglian
- Department of Chemistry G. Ciamician, University of Bologna, Via Selmi 2, 40126, Bologna, Italy; ByFlow Srl, Via dell'Arcoveggio 74, 40129, Bologna, Italy
| | - Marinella Portolani
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Via del Pozzo, 71, 41124, Modena, Italy
| |
Collapse
|
7
|
Brezinski K, Gorczyca B. An overview of the uses of high performance size exclusion chromatography (HPSEC) in the characterization of natural organic matter (NOM) in potable water, and ion-exchange applications. CHEMOSPHERE 2019; 217:122-139. [PMID: 30414544 DOI: 10.1016/j.chemosphere.2018.10.028] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/05/2018] [Accepted: 10/06/2018] [Indexed: 06/08/2023]
Abstract
Natural organic matter (NOM) constitutes the terrestrial and aquatic sources of organic plant like material found in water bodies. As of recently, an ever-increasing amount of effort is being put towards developing better ways of unraveling the heterogeneous nature of NOM. This is important as NOM is responsible for a wide variety of both direct and indirect effects: ranging from aesthetic concerns related to taste and odor, to issues related to disinfection by-product formation and metal mobility. A better understanding of NOM can also provide a better appreciation for treatment design; lending a further understanding of potable water treatment impacts on specific fractions and constituents of NOM. The use of high performance size-exclusion chromatography has shown a growing promise in its various applications for NOM characterization, through the ability to partition ultraviolet absorbing moieties into ill-defined groups of humic acids, hydrolysates of humics, and low molecular weight acids. HPSEC also has the ability of simultaneously measuring absorbance in the UV-visible range (200-350 nm); further providing a spectroscopic fingerprint that is simply unavailable using surrogate measurements of NOM, such as total organic carbon (TOC), ultraviolet absorbance at 254 nm (UV254), excitation-emission matrices (EEM), and specific ultraviolet absorbance at 254 nm (SUVA254). This review mainly focuses on the use of HPSEC in the characterization of NOM in a potable water setting, with an additional focus on strong-base ion-exchangers specifically targeted for NOM constituents.
Collapse
Affiliation(s)
- Kenneth Brezinski
- Department of Civil Engineering, University of Manitoba, Winnipeg, MB, Canada.
| | - Beata Gorczyca
- Department of Civil Engineering, University of Manitoba, Winnipeg, MB, Canada
| |
Collapse
|
8
|
Asymmetrical flow field-flow fractionation for improved characterization of human plasma lipoproteins. Anal Bioanal Chem 2018; 411:777-786. [PMID: 30470915 DOI: 10.1007/s00216-018-1499-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 11/03/2018] [Accepted: 11/13/2018] [Indexed: 10/27/2022]
Abstract
High- and low-density lipoproteins (HDL and LDL) are attractive targets for biomarker discovery. However, ultracentrifugation (UC), the current methodology of choice for isolating HDL and LDL, is tedious, requires large sample volume, results in sample loss, and does not readily provide information on particle size. In this work, human plasma HDL and LDL are separated and collected using semi-preparative asymmetrical flow field-flow fractionation (SP-AF4) and UC. The SP-AF4 and UC separation conditions, sample throughput, and liquid chromatography/mass spectrometry (LC/MS) lipidomic results are compared. Over 600 μg of total proteins is recovered in a single SP-AF4 run, and Western blot results confirm apoA1 pure and apoB100 pure fractions, consistent with HDL and LDL, respectively. The SP-AF4 separation requires ~ 60 min per sample, thus providing a marked improvement over UC which can span hours to days. Lipidome analysis of SP-AF4-prepared HDL and LDL fractions is compared to UC-prepared HDL and LDL samples. Over 270 lipids in positive MS mode and over 140 lipids in negative MS mode are identified by both sample preparation techniques with over 98% overlap between the lipidome. Additionally, lipoprotein size distributions are determined using analytical scale AF4 coupled with multiangle light scattering (MALS) and dynamic light scattering (DLS) detectors. These developments position SP-AF4 as a sample preparation method of choice for lipoprotein biomarker characterization and identification. Graphical abstract ᅟ.
Collapse
|
9
|
Hollow-fiber flow field-flow fractionation and multi-angle light scattering as a new analytical solution for quality control in pharmaceutical nanotechnology. Microchem J 2018. [DOI: 10.1016/j.microc.2016.12.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
10
|
Jochem AR, Ankah GN, Meyer LA, Elsenberg S, Johann C, Kraus T. Colloidal Mechanisms of Gold Nanoparticle Loss in Asymmetric Flow Field-Flow Fractionation. Anal Chem 2016; 88:10065-10073. [PMID: 27673742 DOI: 10.1021/acs.analchem.6b02397] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Flow field-flow fractionation is a powerful method for the analysis of nanoparticle size distributions, but its widespread use has been hampered by large analyte losses, especially of metal nanoparticles. Here, we report on the colloidal mechanisms underlying the losses. We systematically studied gold nanoparticles (AuNPs) during asymmetrical flow field-flow fractionation (AF4) by systematic variation of the particle properties and the eluent composition. Recoveries of AuNPs (core diameter 12 nm) stabilized by citrate or polyethylene glycol (PEG) at different ionic strengths were determined. We used online UV-vis detection and off-line elementary analysis to follow particle losses during full analysis runs, runs without cross-flow, and runs with parts of the instrument bypassed. The combination allowed us to calculate relative and absolute analyte losses at different stages of the analytic protocol. We found different loss mechanisms depending on the ligand. Citrate-stabilized particles degraded during analysis and suffered large losses (up to 74%). PEG-stabilized particles had smaller relative losses at moderate ionic strengths (1-20%) that depended on PEG length. Long PEGs at higher ionic strengths (≥5 mM) caused particle loss due to bridging adsorption at the membrane. Bulk agglomeration was not a relevant loss mechanism at low ionic strengths ≤5 mM for any of the studied particles. An unexpectedly large fraction of particles was lost at tubing and other internal surfaces. We propose that the colloidal mechanisms observed here are relevant loss mechanisms in many particle analysis protocols and discuss strategies to avoid them.
Collapse
Affiliation(s)
- Aljosha-Rakim Jochem
- INM - Leibniz Institute for New Materials , Campus D2 2, 66123 Saarbruecken, Germany
| | - Genesis Ngwa Ankah
- INM - Leibniz Institute for New Materials , Campus D2 2, 66123 Saarbruecken, Germany
| | - Lars-Arne Meyer
- INM - Leibniz Institute for New Materials , Campus D2 2, 66123 Saarbruecken, Germany
| | | | - Christoph Johann
- Wyatt Technology Europe GmbH , Hochstrasse 12a, 56307 Dernbach, Germany
| | - Tobias Kraus
- INM - Leibniz Institute for New Materials , Campus D2 2, 66123 Saarbruecken, Germany
| |
Collapse
|
11
|
Role of Carbonyl Modifications on Aging-Associated Protein Aggregation. Sci Rep 2016; 6:19311. [PMID: 26776680 PMCID: PMC4726109 DOI: 10.1038/srep19311] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 12/09/2015] [Indexed: 12/26/2022] Open
Abstract
Protein aggregation is a common biological phenomenon, observed in different physiological and pathological conditions. Decreased protein solubility and a tendency to aggregate is also observed during physiological aging but the causes are currently unknown. Herein we performed a biophysical separation of aging-related high molecular weight aggregates, isolated from the bone marrow and splenic cells of aging mice and followed by biochemical and mass spectrometric analysis. The analysis indicated that compared to younger mice an increase in protein post-translational carbonylation was observed. The causative role of these modifications in inducing protein misfolding and aggregation was determined by inducing carbonyl stress in young mice, which recapitulated the increased protein aggregation observed in old mice. Altogether our analysis indicates that oxidative stress-related post-translational modifications accumulate in the aging proteome and are responsible for increased protein aggregation and altered cell proteostasis.
Collapse
|
12
|
Kostogrys RB, Johann C, Czyżyńska I, Franczyk-Żarów M, Drahun A, Maślak E, Jasztal A, Gajda M, Mateuszuk Ł, Wrobel TP, Baranska M, Wybrańska I, Jezkova K, Nachtigal P, Chlopicki S. Characterisation of Atherogenic Effects of Low Carbohydrate, High Protein Diet (LCHP) in ApoE/LDLR-/- Mice. J Nutr Health Aging 2015; 19:710-8. [PMID: 26193853 DOI: 10.1007/s12603-015-0543-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Low Carbohydrate High Protein diet represents a popular strategy to achieve weight loss. OBJECTIVE The aim of this study was to characterize effects of low carbohydrate, high protein diet (LCHP) on atherosclerotic plaque development in brachiocephalic artery (BCA) in apoE/LDLR-/- mice and to elucidate mechanisms of proatherogenic effects of LCHP diet. MATERIALS AND METHODS Atherosclerosis plaques in brachiocephalic artery (BCA) as well as in aortic roots, lipoprotein profile, inflammation biomarkers, expression of SREBP-1 in the liver as well as mortality were analyzed in Control diet (AIN-93G) or LCHP (Low Carbohydrate High Protein) diet fed mice. RESULTS Area of atherosclerotic plaques in aortic roots or BCA from LCHP diet fed mice was substantially increased as compared to mice fed control diet and was characterized by increased lipids and cholesterol contents (ORO staining, FT-IR analysis), increased macrophage infiltration (MOMA-2) and activity of MMPs (zymography). Pro-atherogenic phenotype of LCHP fed apoE/LDLR-/- mice was associated with increased plasma total cholesterol concentration, and in LDL and VLDL fractions, increased TG contents in VLDL, and a modest increase in plasma urea. LCHP diet increased SCD-1 index, activated SREBP-1 transcription factor in the liver and triggered acute phase response as evidence by an increased plasma concentration of haptoglobin, CRP or AGP. Finally, in long-term experiment survival of apoE/LDLR-/- mice fed LCHP diet was substantially reduced as compared to their counterparts fed control diet suggesting overall detrimental effects of LCHP diet on health. CONCLUSIONS The pro-atherogenic effect of LCHP diet in apoE/LDLR-/- mice is associated with profound increase in LDL and VLDL cholesterol, VLDL triglicerides, liver SREBP-1 upregulation, and systemic inflammation.
Collapse
Affiliation(s)
- R B Kostogrys
- Renata B. Kostogrys, Department of Genetic Diagnostics and Nutrigenomics, Chair of Clinical Biochemistry, Jagiellonian University Medical College, ul. Kopernika 21, 31-531 Kraków, Poland, Phone/fax numbers: 48 12 662 48 21/ 48 12 662 48 12,
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Marassi V, Casolari S, Roda B, Zattoni A, Reschiglian P, Panzavolta S, Tofail SA, Ortelli S, Delpivo C, Blosi M, Costa AL. Hollow-fiber flow field-flow fractionation and multi-angle light scattering investigation of the size, shape and metal-release of silver nanoparticles in aqueous medium for nano-risk assessment. J Pharm Biomed Anal 2015; 106:92-9. [DOI: 10.1016/j.jpba.2014.11.031] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 11/10/2014] [Accepted: 11/15/2014] [Indexed: 01/30/2023]
|
14
|
Polysaccharide characterization by hollow-fiber flow field-flow fractionation with on-line multi-angle static light scattering and differential refractometry. J Chromatogr A 2015; 1380:146-55. [PMID: 25578045 DOI: 10.1016/j.chroma.2014.12.070] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 12/05/2014] [Accepted: 12/23/2014] [Indexed: 11/22/2022]
Abstract
Accurate characterization of the molar mass and size of polysaccharides is an ongoing challenge, oftentimes due to architectural diversity but also to the broad molar mass (M) range over which a single polysaccharide can exist and to the ultra-high M of many polysaccharides. Because of the latter, many of these biomacromolecules experience on-column, flow-induced degradation during analysis by size-exclusion and, even, hydrodynamic chromatography (SEC and HDC, respectively). The necessity for gentler fractionation methods has, to date, been addressed employing asymmetric flow field-flow fractionation (AF4). Here, we introduce the coupling of hollow-fiber flow field-flow fractionation (HF5) to multi-angle static light scattering (MALS) and differential refractometry (DRI) detection for the analysis of polysaccharides. In HF5, less stresses are placed on the macromolecules during separation than in SEC or HDC, and HF5 can offer a higher sensitivity, with less propensity for system overloading and analyte aggregation, than generally found in AF4. The coupling to MALS and DRI affords the determination of absolute, calibration-curve-independent molar mass averages and dispersities. Results from the present HF5/MALS/DRI experiments with dextrans, pullulans, and larch arabinogalactan were augmented with hydrodynamic radius (RH) measurements from off-line quasi-elastic light scattering (QELS) and by RH distribution calculations and fractogram simulations obtained via a finite element analysis implementation of field-flow fractionation theory by commercially available software. As part of this study, we have investigated analyte recovery in HF5 and also possible reasons for discrepancies between calculated and simulated results vis-à-vis experimentally determined data.
Collapse
|
15
|
Hydrodynamic size-based separation and characterization of protein aggregates from total cell lysates. Nat Protoc 2014; 10:134-48. [PMID: 25521790 DOI: 10.1038/nprot.2015.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Herein we describe a protocol that uses hollow-fiber flow field-flow fractionation (FFF) coupled with multiangle light scattering (MALS) for hydrodynamic size-based separation and characterization of complex protein aggregates. The fractionation method, which requires 1.5 h to run, was successfully modified from the analysis of protein aggregates, as found in simple protein mixtures, to complex aggregates, as found in total cell lysates. In contrast to other related methods (filter assay, analytical ultracentrifugation, gel electrophoresis and size-exclusion chromatography), hollow-fiber flow FFF coupled with MALS allows a flow-based fractionation of highly purified protein aggregates and simultaneous measurement of their molecular weight, r.m.s. radius and molecular conformation (e.g., round, rod-shaped, compact or relaxed). The polyethersulfone hollow fibers used, which have a 0.8-mm inner diameter, allow separation of as little as 20 μg of total cell lysates. In addition, the ability to run the samples in different denaturing and nondenaturing buffer allows defining true aggregates from artifacts, which can form during sample preparation. The protocol was set up using Paraquat-induced carbonylation, a model that induces protein aggregation in cultured cells. This technique will advance the biochemical, proteomic and biophysical characterization of molecular-weight aggregates associated with protein mutations, as found in many CNS degenerative diseases, or chronic oxidative stress, as found in aging, and chronic metabolic and inflammatory conditions.
Collapse
|
16
|
Marassi V, Roda B, Zattoni A, Tanase M, Reschiglian P. Hollow fiber flow field-flow fractionation and size-exclusion chromatography with multi-angle light scattering detection: A complementary approach in biopharmaceutical industry. J Chromatogr A 2014; 1372C:196-203. [DOI: 10.1016/j.chroma.2014.10.072] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 10/22/2014] [Accepted: 10/24/2014] [Indexed: 12/29/2022]
|
17
|
Wagner M, Holzschuh S, Traeger A, Fahr A, Schubert US. Asymmetric flow field-flow fractionation in the field of nanomedicine. Anal Chem 2014; 86:5201-10. [PMID: 24802650 DOI: 10.1021/ac501664t] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Asymmetric flow field-flow fractionation (AF4) is a widely used and versatile technique in the family of field-flow fractionations, indicated by a rapidly increasing number of publications. It represents a gentle separation and characterization method, where nonspecific interactions are reduced to a minimum, allows a broad separation range from several nano- up to micrometers and enables a superior characterization of homo- and heterogenic systems. In particular, coupling to multiangle light scattering provides detailed access to sample properties. Information about molar mass, polydispersity, size, shape/conformation, or density can be obtained nearly independent of the used material. In this Perspective, the application and progress of AF4 for (bio)macromolecules and colloids, relevant for "nano" medical and pharmaceutical issues, will be presented. The characterization of different nanosized drug or gene delivery systems, e.g., polymers, nanoparticles, micelles, dendrimers, liposomes, polyplexes, and virus-like-particles (VLP), as well as therapeutic relevant proteins, antibodies, and nanoparticles for diagnostic usage will be discussed. Thereby, the variety of obtained information, the advantages and pitfalls of this emerging technique will be highlighted. Additionally, the influence of different fractionation parameters in the separation process is discussed in detail. Moreover, a comprehensive overview is given, concerning the investigated samples, fractionation parameters as membrane types and buffers used as well as the chosen detectors and the corresponding references. The perspective ends up with an outlook to the future.
Collapse
Affiliation(s)
- Michael Wagner
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena , Humboldtstrasse 10, 07743 Jena, Germany
| | | | | | | | | |
Collapse
|
18
|
Zattoni A, Roda B, Borghi F, Marassi V, Reschiglian P. Flow field-flow fractionation for the analysis of nanoparticles used in drug delivery. J Pharm Biomed Anal 2014; 87:53-61. [DOI: 10.1016/j.jpba.2013.08.018] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 08/06/2013] [Accepted: 08/08/2013] [Indexed: 01/26/2023]
|
19
|
Hollow-fiber flow field-flow fractionation with multi-angle laser scattering detection for aggregation studies of therapeutic proteins. Anal Bioanal Chem 2013; 406:1619-27. [DOI: 10.1007/s00216-013-7462-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2013] [Revised: 10/20/2013] [Accepted: 10/23/2013] [Indexed: 12/01/2022]
|
20
|
Chiaramonte E, Rhazi L, Aussenac T, White DR. Amylose and amylopectin in starch by asymmetric flow field-flow fractionation with multi-angle light scattering and refractive index detection (AF4–MALS–RI). J Cereal Sci 2012. [DOI: 10.1016/j.jcs.2012.04.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
21
|
Schachermeyer S, Ashby J, Zhong W. Advances in field-flow fractionation for the analysis of biomolecules: instrument design and hyphenation. Anal Bioanal Chem 2012; 404:1151-8. [DOI: 10.1007/s00216-012-6069-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 04/02/2012] [Accepted: 04/21/2012] [Indexed: 10/28/2022]
|
22
|
Zattoni A, Rambaldi DC, Casolari S, Roda B, Reschiglian P. Tandem hollow-fiber flow field-flow fractionation. J Chromatogr A 2011; 1218:4132-7. [DOI: 10.1016/j.chroma.2011.02.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2010] [Revised: 02/17/2011] [Accepted: 02/21/2011] [Indexed: 11/28/2022]
|