1
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Jiang H, Wang Z, Deng J, Ding Z, Chen Q. Quantitative detection of heavy metal Cd in vegetable oils: A nondestructive method based on Raman spectroscopy combined with chemometrics. J Food Sci 2024. [PMID: 39366770 DOI: 10.1111/1750-3841.17436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2024] [Revised: 09/03/2024] [Accepted: 09/16/2024] [Indexed: 10/06/2024]
Abstract
Heavy metal contaminants in vegetable oils can cause irreversible damage to human health. In this study, the quantitative detection of Cd in vegetable oils was investigated based on Raman spectroscopy combined with chemometric methods. The necessary preprocessing of the Raman signal was performed using baseline calibration and the Savitzky-Golay method. Three variable optimization methods were applied to the preprocessed Raman spectra. Namely, bootstrap soft shrinkage, multiple feature spaces ensemble strategy with least absolute shrinkage and selection operator, and competitive adaptive reweighted sampling (CARS), respectively. Partial least squares regression (PLSR) modeling for the determination of Cd in vegetable oils. The results show that three variable optimization algorithms improved the predictive performance of the model. Among them, the CARS-PLSR model has strong generalization performance and robustness. Its prediction coefficient of determination (R P 2 $R_{\mathrm{P}}^2$ ) was 0.9995, the root mean square error of prediction was 0.3533 mg/kg, and the relative prediction deviation was 44.3748, respectively. In summary, rapid quantitative analysis of Cd contamination in vegetable oils can be realized based on Raman spectroscopy combined with chemometrics.
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Affiliation(s)
- Hui Jiang
- School of Electrical and Information Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Ziyu Wang
- School of Electrical and Information Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Jihong Deng
- School of Electrical and Information Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Zhidong Ding
- Product Quality Supervision and Inspection Center of Zhenjiang City, Zhenjiang, P. R. China
| | - Quansheng Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, P. R. China
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2
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Dhillon AK, Barman S, Siddhanta S. Photoinduced Electron-Transfer-Mediated Differential Recognition of Proteins on Plasmonic Surfaces. ACS APPLIED MATERIALS & INTERFACES 2024; 16:45888-45900. [PMID: 39163649 DOI: 10.1021/acsami.4c05348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/22/2024]
Abstract
Photoinduced enhanced Raman spectroscopy (PIERS) has emerged as an efficient technique for enhancing the vibrational modes of analyte molecules adsorbed on a plasmonic nanoparticle-semiconductor hybrid material through chemical enhancement governed by electron transfer from the semiconductor to the plasmonic nanoparticles under an additional ultraviolet (UV) preirradiation step. The increase in chemical enhancement is imperative in analyzing and detecting pharmaceutically important moieties, such as amino acids and proteins, with a low Raman scattering cross section, even in complex biological environments. Herein, we demonstrate that UV preirradiation induced the creation of additional oxygen vacancies by introducing a low concentration (≈1%) of Ni as a dopant in the 2D platelike morphology of the BiOCl semiconductor; i.e., defect states in the semiconductor can induce charge transfer from the semiconductor to the plasmonic nanoparticles. This phenomenon facilitates electron transfer to the adsorbed analyte on the plasmonic surface. Additionally, we have shown the usefulness of this method in protein immobilization on the substrate surface, followed by the identification of a specific protein in the mixture of proteins. Proteins containing cysteine residues capture these electrons to form a surface-bound thiol group via a transient disulfide electron adduct radical. This allows differential binding of the protein molecules to the semiconductor plasmonic hybrid depending on the concentration of surface cysteine residues in proteins. Through PIERS and principal component analysis, we demonstrate the possibility of probing and distinguishing biomolecules based on their surface composition and secondary structure components even in their mixtures, thus paving the way for efficient analysis of complex biological systems.
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Affiliation(s)
- Ashish Kumar Dhillon
- Department of Chemistry, Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110016, India
| | - Sanmitra Barman
- Center for Advanced Materials and Devices (CAMD), BML Munjal University, Haryana 122413, India
| | - Soumik Siddhanta
- Department of Chemistry, Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110016, India
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3
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Sun R, Lim S. Ferritin cages as building blocks for higher-order assembly through copper-sulfur bonds for HER analysis. RSC Adv 2024; 14:24791-24796. [PMID: 39114434 PMCID: PMC11305402 DOI: 10.1039/d4ra02931c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Accepted: 05/30/2024] [Indexed: 08/10/2024] Open
Abstract
Higher-order assembly of ferritins has been achieved on copper substrate by introducing cysteines on their surfaces with thiol groups as the active moiety. To elucidate the assembly mechanism, Raman spectroscopy was utilized to characterize the interaction between the copper substrate and the modified ferritin, AfFtnAA/E94C. The resulting higher-order architecture shows enhanced hydrogen evolution reaction activity.
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Affiliation(s)
- Ruoxuan Sun
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University 70 Nanyang Drive 637457 Singapore
| | - Sierin Lim
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University 70 Nanyang Drive 637457 Singapore
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4
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Hassan AHA, Zeinhom MMA, Shaban M, Korany AM, Gamal A, Abdel-Atty NS, Al-Saeedi SI. Rapid and sensitive in situ detection of heavy metals in fish using enhanced Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 313:124082. [PMID: 38479227 DOI: 10.1016/j.saa.2024.124082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 01/31/2024] [Accepted: 02/22/2024] [Indexed: 04/02/2024]
Abstract
Heavy metals have been widely applied in industry, agriculture, and other fields because of their outstanding physics and chemistry properties. They are non-degradable even at low concentrations, causing irreversible harm to the human and other organisms. Therefore, it is of great significance to develop high accuracy and sensitivity as well as stable techniques for their detection. Raman scattering spectroscopy and atomic absorption spectrophotometer (AAS) were used parallelly to detect heavy metal ions such as Hg, Cd, and Pb of different concentrations in fish samples. The concentration of the heavy metals is varied from 5 ppb to 5 ppm. Despite the satisfactory recoveries of AAS, their drawbacks are imperative for an alternative technique. In Raman scattering spectroscopy, the intensities and areas of the characteristic peaks are increased with increasing the concentration of the heavy metals. For Hg concentration ≥ 1 ppm, a slight shift is observed in the peak position. The obtained values of peak intensity and peak area are modeled according to Elvoich, Pseudo-first order, Pseudo-second order, and asymptotic1 exponential model. The best modeling was obtained using the Elovich model followed by the asymptotic1 exponential model. The introduced Raman spectroscopy-based approach for on-site detection of trace heavy metal pollution in fish samples is rapid, low-cost, and simple to implement, increasing its visibility in food safety and industrial applications.
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Affiliation(s)
- Amal H A Hassan
- Food Safety & Technology Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt.
| | - Mohamed M A Zeinhom
- Food Safety & Technology Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt.
| | - Mohamed Shaban
- Department of Physics, Faculty of Science, Islamic University of Madinah, Madinah 42351, Saudi Arabia; Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt.
| | - Ahmed M Korany
- Food Safety & Technology Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Ahmed Gamal
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Nasser S Abdel-Atty
- Food Safety & Technology Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Sameerah I Al-Saeedi
- Department of Chemistry, Collage of Science, Princess Nourah bint Abdulrahman University, P.O.Box 84428, Riyadh 11671, Saudi Arabia.
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5
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Binding of silver ions to alpha-lactalbumin. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Helaoui S, Boughattas I, El Kribi-Boukhris S, Mkhinini M, Alphonse V, Livet A, Bousserrhine N, Banni M. Assessing the effects of nickel on, e.g., Medicago sativa L. nodules using multidisciplinary approach. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:77386-77400. [PMID: 35672641 DOI: 10.1007/s11356-022-21311-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
Industrial wastes and fertilizers can introduce excessive levels of nickel (Ni) into the environment, potentially causing threats to plants, animals, as well as human beings. However, the number of studies on the effects of Ni toxicity on nodules is fairly limited. To address this issue, the effects of increasing Ni concentration on alfalfa nodules were assessed at chemical, biochemical, and transcriptomic levels. For this purpose, plants were grown in soils supplied with Ni (control, 0 mg/kg; C1, 50 mg/kg; C2, 150 mg/kg; C3, 250 mg/kg; and C4, 500 mg/kg) for 90 days. Ni loads in leaves, roots, and nodules were monitored after the exposure period. A set of biochemical biomarkers of oxidative stress was determined in nodules including antioxidants and metal homeostasis as well as lipid peroxidation. Gene expression levels of the main targets involved in oxidative stress and metal homeostasis were assessed. Our data indicated a high concentration of Ni in leaves, roots, and nodules where values reached 25.64 ± 3.04 mg/kg, 83.23 ± 5.16 mg/kg, and 125.71 ± 4.53 mg/kg in dry weight, respectively. Moreover, a significant increase in nodule biomass was observed in plants exposed to C4 in comparison to control treatment and percentage increased by 63%. Then, lipid peroxidation increased with a rate of 95% in nodules exposed to C4. Enzymatic activities were enhanced remarkably, suggesting the occurrence of oxidative stress, with increased superoxide dismutase (SOD), glutathione reductase (GR), and ascorbate peroxidase (APX). Our results showed also a significant upregulation of SOD, GR and APX genes in nodules. Nodule homoglutathione (HGSH) levels increased with the different Ni concentrations, with a remarkable decrease of glutathione S-transferase (GST) activity and glutathione (GSH) content for the highest Ni concentration with 43% and 52% reduction, respectively. The phytochelatin (PC) and metallothionein (MT) concentrations increased in nodules, which implied the triggering of a cellular protection mechanism for coping with Ni toxicity. The results suggested that Ni promotes a drastic oxidative stress in alfalfa nodules, yet the expression of MT and PC to reduce Ni toxicity could be used as Ni stress bioindicators. Our findings provide new insights into the central role of alfalfa nodules in limiting the harmful effects of soil pollution. Therefore, nodules co-expressing antioxidant enzymes may have high phytoremediation potential.
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Affiliation(s)
- Sondes Helaoui
- Laboratory of Biochemistry and Environmental Toxicology, Higher Institute of Agronomy, University of Sousse, Sousse, Tunisia
| | - Iteb Boughattas
- Laboratory of Biochemistry and Environmental Toxicology, Higher Institute of Agronomy, University of Sousse, Sousse, Tunisia.
| | - Sameh El Kribi-Boukhris
- Laboratory of Biochemistry and Environmental Toxicology, Higher Institute of Agronomy, University of Sousse, Sousse, Tunisia
| | - Marouane Mkhinini
- Laboratory of Biochemistry and Environmental Toxicology, Higher Institute of Agronomy, University of Sousse, Sousse, Tunisia
| | - Vanessa Alphonse
- Laboratory Water, Environment and Urban Systems, Faculty of Science and Technology, University Paris-Est Créteil, Créteil Cedex, France
| | - Alexandre Livet
- Laboratory Water, Environment and Urban Systems, Faculty of Science and Technology, University Paris-Est Créteil, Créteil Cedex, France
| | - Noureddine Bousserrhine
- Laboratory Water, Environment and Urban Systems, Faculty of Science and Technology, University Paris-Est Créteil, Créteil Cedex, France
| | - Mohamed Banni
- Laboratory of Biochemistry and Environmental Toxicology, Higher Institute of Agronomy, University of Sousse, Sousse, Tunisia
- Higher Institute of Biotechnologie of Monastir, University of Monastir, Monastir, Tunisia
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7
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Warsi MS, Habib S, Talha M, Khan S, Singh P, Mir AR, Abidi M, Ali A, Moinuddin. 4-Chloro-1,2-phenylenediamine induced structural perturbation and genotoxic aggregation in human serum albumin. Front Chem 2022; 10:1016354. [PMID: 36199663 PMCID: PMC9527296 DOI: 10.3389/fchem.2022.1016354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 09/05/2022] [Indexed: 11/24/2022] Open
Abstract
4-Chloro-1,2-phenylenediamine (4-Cl-OPD) is a halogenated aromatic diamine used as a precursor in permanent hair color production. Despite its well-documented mutagenic and carcinogenic effects in various in vitro and in vivo models, its role in fibrillar aggregate formation and their genotoxic effect in therapeutic proteins has received less attention. The significance of human serum albumin (HSA) arises from its involvement in bio-regulatory and transport processes. HSA misfolding and aggregation are responsible for some of the most frequent neurodegenerative disorders. We used various complementary approaches to track the formation of amyloid fibrils and their genotoxic effect. Molecular dynamics study demonstrated the complex stability. The impact of 4-Cl-OPD on the structural dynamics of HSA was confirmed by Raman spectroscopy, X-ray diffraction, HPLC and SDS-PAGE. Fibrilllar aggregates were investigated using Congo red assay, DLS, and SEM. The genotoxic nature of 4-Cl-OPD was confirmed using plasmid nicking assay and DAPI staining, which revealed DNA damage and cell apoptosis. 4-Cl-OPD provides a model system for studying fibrillar aggregation and their genotoxic potential in the current investigation. Future studies should investigate the inhibition of the aggregation/fibrillation process, which may yield valuable clinical insights.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Moinuddin
- Department of Biochemistry, Faculty of Medicine, Jawaharlal Nehru Medical College, Aligarh Muslim University, Aligarh, India
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8
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Calvo JS, Villones RLE, York NJ, Stefaniak E, Hamilton GE, Stelling AL, Bal W, Pierce BS, Meloni G. Evidence for a Long-Lived, Cu-Coupled and Oxygen-Inert Disulfide Radical Anion in the Assembly of Metallothionein-3 Cu(I) 4-Thiolate Cluster. J Am Chem Soc 2022; 144:709-722. [PMID: 34985880 PMCID: PMC9029059 DOI: 10.1021/jacs.1c03984] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The human copper-binding protein metallothionein-3 (MT-3) can reduce Cu(II) to Cu(I) and form a polynuclear Cu(I)4-Cys5-6 cluster concomitant with intramolecular disulfide bonds formation, but the cluster is unusually inert toward O2 and redox-cycling. We utilized a combined array of rapid-mixing spectroscopic techniques to identify and characterize the transient radical intermediates formed in the reaction between Zn7MT-3 and Cu(II) to form Cu(I)4Zn(II)4MT-3. Stopped-flow electronic absorption spectroscopy reveals the rapid formation of transient species with absorption centered at 430-450 nm and consistent with the generation of disulfide radical anions (DRAs) upon reduction of Cu(II) by MT-3 cysteine thiolates. These DRAs are oxygen-stable and unusually long-lived, with lifetimes in the seconds regime. Subsequent DRAs reduction by Cu(II) leads to the formation of a redox-inert Cu(I)4-Cys5 cluster with short Cu-Cu distances (<2.8 Å), as revealed by low-temperature (77 K) luminescence spectroscopy. Rapid freeze-quench Raman and electron paramagnetic resonance (EPR) spectroscopy characterization of the intermediates confirmed the DRA nature of the sulfur-centered radicals and their subsequent oxidation to disulfide bonds upon Cu(II) reduction, generating the final Cu(I)4-thiolate cluster. EPR simulation analysis of the radical g- and A-values indicate that the DRAs are directly coupled to Cu(I), potentially explaining the observed DRA stability in the presence of O2. We thus provide evidence that the MT-3 Cu(I)4-Cys5 cluster assembly process involves the controlled formation of novel long-lived, copper-coupled, and oxygen-stable disulfide radical anion transient intermediates.
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Affiliation(s)
- Jenifer S Calvo
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080, United States
| | - Rhiza Lyne E Villones
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080, United States
| | - Nicholas J York
- Department of Chemistry and Biochemistry, University of Alabama, 250 Hackberry Lane, Tuscaloosa, Alabama 35401, United States
| | - Ewelina Stefaniak
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, 02-106 Warsaw, Poland
| | - Grace E Hamilton
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080, United States
| | - Allison L Stelling
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080, United States
| | - Wojciech Bal
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, 02-106 Warsaw, Poland
| | - Brad S Pierce
- Department of Chemistry and Biochemistry, University of Alabama, 250 Hackberry Lane, Tuscaloosa, Alabama 35401, United States
| | - Gabriele Meloni
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080, United States
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9
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Batista de Carvalho LAE, Mamede AP, Batista de Carvalho ALM, Marques J, Cinque G, Rudić S, Marques MPM. Metallodrug-protein interaction probed by synchrotron terahertz and neutron scattering spectroscopy. Biophys J 2021; 120:3070-3078. [PMID: 34214537 PMCID: PMC8390959 DOI: 10.1016/j.bpj.2021.06.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/20/2021] [Accepted: 06/08/2021] [Indexed: 11/30/2022] Open
Abstract
This experimental work applied coherent synchrotron-radiation terahertz spectroscopy and inelastic neutron scattering to address two processes directly associated with the mode of action of metal-based anticancer agents that can severely undermine chemotherapeutic treatment: drug binding to human serum albumin, occurring during intravenous drug transport, and intracellular coordination to thiol-containing biomolecules (such as metallothioneins) associated with acquired drug resistance. Cisplatin and two dinuclear platinum (Pt)- and palladium (Pd)-polyamine agents developed by this research group, which have yielded promising results toward some types of human cancers, were investigated. Complementary synchrotron-radiation-terahertz and inelastic neutron scattering data revealed protein metalation, through S- and N-donor ligands from cysteine, methionine, and histidine residues. A clear impact of the Pt and Pd agents was evidenced, drug binding to albumin and metallothionein having been responsible for significant changes in the overall protein conformation, as well as for an increased flexibility and possible aggregation.
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Affiliation(s)
| | - Adriana Pereira Mamede
- Molecular Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | | | - Joana Marques
- Molecular Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - Gianfelice Cinque
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire, United Kingdom
| | - Svemir Rudić
- ISIS Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire, United Kingdom
| | - Maria Paula Matos Marques
- Molecular Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra, Portugal; Department of Life Sciences, University of Coimbra, Coimbra, Portugal
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10
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Kim J, Park K, Cho Y, Shin H, Kim S, Char K, Choi JW. Zn 2+-Imidazole Coordination Crosslinks for Elastic Polymeric Binders in High-Capacity Silicon Electrodes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2004290. [PMID: 33977065 PMCID: PMC8097348 DOI: 10.1002/advs.202004290] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/13/2021] [Indexed: 06/12/2023]
Abstract
Recent research has built a consensus that the binder plays a key role in the performance of high-capacity silicon anodes in lithium-ion batteries. These anodes necessitate the use of a binder to maintain the electrode integrity during the immense volume change of silicon during cycling. Here, Zn2+-imidazole coordination crosslinks that are formed to carboxymethyl cellulose backbones in situ during electrode fabrication are reported. The recoverable nature of Zn2+-imidazole coordination bonds and the flexibility of the poly(ethylene glycol) chains are jointly responsible for the high elasticity of the binder network. The high elasticity tightens interparticle contacts and sustains the electrode integrity, both of which are beneficial for long-term cyclability. These electrodes, with their commercial levels of areal capacities, exhibit superior cycle life in full-cells paired with LiNi0.8Co0.15Al0.05O2 cathodes. The present study underlines the importance of highly reversible metal ion-ligand coordination chemistries for binders intended for high capacity alloying-based electrodes.
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Affiliation(s)
- Jaemin Kim
- School of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Kiho Park
- School of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Yunshik Cho
- School of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Hyuksoo Shin
- School of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Sungchan Kim
- School of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Kookheon Char
- School of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
- Department of Materials Science and EngineeringSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
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11
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Alexandratos SD, Zhu X, Marianski MR. Binding of Divalent Transition Metal Ions to Immobilized Phosphinic Acid Ligands. Part I. Characterization by Fourier Transform Infrared Spectroscopy. SOLVENT EXTRACTION AND ION EXCHANGE 2021. [DOI: 10.1080/07366299.2020.1831238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Spiro D. Alexandratos
- Department of Chemistry, Hunter College of the City University of New York, New York, New York, USA
- The Ph.D. Program in Chemistry, Graduate Center of the City University of New York, New York, New York, USA
| | - Xiaoping Zhu
- Department of Chemistry, Hunter College of the City University of New York, New York, New York, USA
| | - Mateusz R. Marianski
- Department of Chemistry, Hunter College of the City University of New York, New York, New York, USA
- The Ph.D. Program in Chemistry, Graduate Center of the City University of New York, New York, New York, USA
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12
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Stewart TJ. Across the spectrum: integrating multidimensional metal analytics for in situ metallomic imaging. Metallomics 2020; 11:29-49. [PMID: 30499574 PMCID: PMC6350628 DOI: 10.1039/c8mt00235e] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
To know how much of a metal species is in a particular location within a biological context at any given time is essential for understanding the intricate roles of metals in biology and is the fundamental question upon which the field of metallomics was born. Simply put, seeing is powerful. With the combination of spectroscopy and microscopy, we can now see metals within complex biological matrices complemented by information about associated molecules and their structures. With the addition of mass spectrometry and particle beam based techniques, the field of view grows to cover greater sensitivities and spatial resolutions, addressing structural, functional and quantitative metallomic questions from the atomic level to whole body processes. In this perspective, I present a paradigm shift in the way we relate to and integrate current and developing metallomic analytics, highlighting both familiar and perhaps less well-known state of the art techniques for in situ metallomic imaging, specific biological applications, and their use in correlative studies. There is a genuine need to abandon scientific silos and, through the establishment of a metallomic scientific platform for further development of multidimensional analytics for in situ metallomic imaging, we have an incredible opportunity to enhance the field of metallomics and demonstrate how discovery research can be done more effectively.
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Affiliation(s)
- Theodora J Stewart
- King's College London, Mass Spectrometry, London Metallomics Facility, 4th Floor Franklin-Wilkins Building, 150 Stamford St., London SE1 9NH, UK.
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13
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Chumpol J, Siri S. In vivo formation of spherical and rod lead nanoparticles in root cells of water velvet (Azolla pinnata). Biotechnol Appl Biochem 2020; 67:991-999. [PMID: 31821601 DOI: 10.1002/bab.1871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 12/02/2019] [Indexed: 11/10/2022]
Abstract
Several plant species survive in the metal-contaminated environment by minimization of detrimental effects of metal exposure and cellular accumulation, but little is known about their capability to transform the uptake metal ions into nanoparticles, especially in nonspherical shapes. This work firstly reported the in vivo formation of spherical and rod-shaped lead nanoparticles (PbNPs) from the uptake lead ions in root cells of water velvet (Azolla pinnata). The energy-dispersive X-ray fluorescence analysis revealed the high level of lead (67.21 ± 0.70%) and the modulated levels of sulfur, potassium, and calcium in the treated roots. Fourier-transform infrared spectroscopy spectral analysis suggested the changes of biochemical constituents in Pb-treated roots, including carbohydrates, organic compounds, proteins, and nucleic acids. Transmission electron microscope (TEM) images revealed the formation of spherical, short rod, and long rod PbNPs dominantly in epidermal, cortical, and vascular cells in the plant roots, respectively. The analyses of energy-dispersive X-ray spectroscopy, high-resolution TEM, and selected area diffraction TEM indicated the body-centered tetragonal lattice of lead oxide nanoparticles (PbONPs) in the root cells.
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Affiliation(s)
- Jiraporn Chumpol
- School of Biology, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Sineenat Siri
- School of Biology, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
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14
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Torreggiani A, Tinti A, Jurasekova Z, Capdevila M, Saracino M, Di Foggia M. Structural Lesions of Proteins Connected to Lipid Membrane Damages Caused by Radical Stress: Assessment by Biomimetic Systems and Raman Spectroscopy. Biomolecules 2019; 9:E794. [PMID: 31783702 PMCID: PMC6995617 DOI: 10.3390/biom9120794] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/25/2019] [Accepted: 11/27/2019] [Indexed: 12/16/2022] Open
Abstract
Model systems constituted by proteins and unsaturated lipid vesicles were used to gain more insight into the effects of the propagation of an initial radical damage on protein to the lipid compartment. The latter is based on liposome technology and allows measuring the trans unsaturated fatty acid content as a result of free radical stress on proteins. Two kinds of sulfur-containing proteins were chosen to connect their chemical reactivity with membrane lipid transformation, serum albumins and metallothioneins. Biomimetic systems based on radiation chemistry were used to mimic the protein exposure to different kinds of free radical stress and Raman spectroscopy to shed light on protein structural changes caused by the free radical attack. Among the amino acid residues, Cys is one of the most sensitive residues towards the attack of free radicals, thus suggesting that metal-Cys clusters are good interceptors of reactive species in metallothioneins, together with disulfides moieties in serum albumins. Met is another important site of the attack, in particular under reductive conditions. Tyr and Phe are sensitive to radical stress too, leading to electron transfer reactions or radical-induced modifications of their structures. Finally, modifications in protein folding take place depending on reactive species attacking the protein.
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Affiliation(s)
| | - Anna Tinti
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, via Belmeloro 8/2, 40126 Bologna, Italy; (A.T.); (M.D.F.)
| | - Zuzana Jurasekova
- Department of Biophysics, Faculty of Science, P.J. Safarik University, Jesenna 5, 04001 Kosice, Slovakia;
- Center for Interdisciplinary Biosciences, Technology and Innovation Park, P. J. Safarik University, Jesenna 5, 04001 Kosice, Slovakia
| | - Mercè Capdevila
- Departament de Quimica, Facultat de ciencies, Universitat Autònoma de Barcelona, 08193 Bellaterra, Catalonia, Spain;
| | - Michela Saracino
- Istituto I.S.O.F. (C.N.R.), via P. Gobetti 101, 40129 Bologna, Italy;
| | - Michele Di Foggia
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, via Belmeloro 8/2, 40126 Bologna, Italy; (A.T.); (M.D.F.)
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Mervinetsky E, Alshanski I, Buchwald J, Dianat A, Lončarić I, Lazić P, Crljen Ž, Gutierrez R, Cuniberti G, Hurevich M, Yitzchaik S. Direct Assembly and Metal-Ion Binding Properties of Oxytocin Monolayer on Gold Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:11114-11122. [PMID: 31361147 DOI: 10.1021/acs.langmuir.9b01830] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Peptides are very common recognition entities that are usually attached to surfaces using multistep processes. These processes require modification of the native peptides and of the substrates. Using functional groups in native peptides for their assembly on surfaces without affecting their biological activity can facilitate the preparation of biosensors. Herein, we present a simple single-step formation of native oxytocin monolayer on gold surface. These surfaces were characterized by atomic force spectroscopy, spectroscopic ellipsometry, and X-ray photoelectron spectroscopy. We took advantage of the native disulfide bridge of the oxytocin for anchoring the peptide to the Au surface, while preserving the metal-ion binding properties. Self-assembled oxytocin monolayer was used by electrochemical impedance spectroscopy for metal-ion sensing leading to subnanomolar sensitivities for zinc or copper ions.
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Affiliation(s)
| | | | - Jörg Buchwald
- Institute for Materials Science and Max Bergmann Center of Biomaterials , Hallwachsstraße 3 , 01062 Dresden , Germany
| | - Arezoo Dianat
- Institute for Materials Science and Max Bergmann Center of Biomaterials , Hallwachsstraße 3 , 01062 Dresden , Germany
| | - Ivor Lončarić
- Ruđer Bošković Institute , Bijenička cesta 54 , 10000 Zagreb , Croatia
| | - Predrag Lazić
- Ruđer Bošković Institute , Bijenička cesta 54 , 10000 Zagreb , Croatia
| | - Željko Crljen
- Ruđer Bošković Institute , Bijenička cesta 54 , 10000 Zagreb , Croatia
| | - Rafael Gutierrez
- Institute for Materials Science and Max Bergmann Center of Biomaterials , Hallwachsstraße 3 , 01062 Dresden , Germany
| | - Gianaurelio Cuniberti
- Institute for Materials Science and Max Bergmann Center of Biomaterials , Hallwachsstraße 3 , 01062 Dresden , Germany
- Dresden Center for Computational Materials Science , TU Dresden , 01062 Dresden , Germany
- Center for Advancing Electronics Dresden , TU Dresden , 01062 Dresden , Germany
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16
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Tomàs Giner M, Jiménez-Martí E, Bofill Arasa R, Tinti A, Di Foggia M, Chatgilialoglu C, Torreggiani A. Analysis of the soybean metallothionein system under free radical stress: protein modification connected to lipid membrane damage. Metallomics 2018; 10:1792-1804. [PMID: 30398507 DOI: 10.1039/c8mt00164b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Metallothioneins are small Cys-rich peptides capable of coordinating metal ions, and proposed to be involved in radical stress. The four Zn(ii)-GmMT complexes of soybean (Glycine max) were recombinantly synthesised and exposed to oxidative (HO˙) and reductive (H˙ atoms and eaq-) stress conditions. Gamma-irradiation was used to simulate the endogenous formation of the reactive species in both aqueous solutions and unsaturated lipid vesicle suspensions, a biomimetic model that showed that tandem protein/lipid damage occurs, in particular under reductive radical stress. This is due to the formation of diffusible sulphur-centred radicals, which migrate from the aqueous phase to the lipid bilayer and are thus able to transform the cis double bond of the oleate moiety into the trans isomer. Among the amino acid residues present in GmMTs, Cys is one of the most sensitive residues towards the attack of free radicals, thus suggesting metal-clusters to be good interceptors of free radicals. Also Met, Tyr and Phe residues are sensitive amino acid sites of attack under both oxidative and reductive conditions. The modification of the Zn(ii)-GmMT complexes, in particular isoform 2, was monitored by Raman spectroscopy and mass spectrometry. Free radical stress on the Zn(ii)-GmMT complexes is able to induce significant structural changes such as partial deconstruction and/or rearrangement of the metal clusters, but not the complete demetallation of the proteins nor breaking of the backbone, thus confirming their capability to act as protectors under free radical stress conditions.
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Affiliation(s)
- Mireia Tomàs Giner
- Dep. Genètica, Facultat de Biologia, Univ. Barcelona, Av. Diagonal 645, 08028 Barcelona, Catalonia, Spain.
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17
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Jung GB, Huh JE, Lee HJ, Kim D, Lee GJ, Park HK, Lee JD. Anti-cancer effect of bee venom on human MDA-MB-231 breast cancer cells using Raman spectroscopy. BIOMEDICAL OPTICS EXPRESS 2018; 9:5703-5718. [PMID: 30460157 PMCID: PMC6238932 DOI: 10.1364/boe.9.005703] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/16/2018] [Accepted: 10/16/2018] [Indexed: 05/08/2023]
Abstract
We demonstrated the apoptotic effect of bee venom (BV) on human MDA-MB-231 breast cancer cells using Raman spectroscopy and principal component analysis (PCA). Biochemical changes in cancer cells were monitored following BV treatment; the results for different concentrations and treatment durations differed markedly. Significantly decreased Raman vibrations for DNA and proteins were observed for cells treated with 3.0 µg/mL BV for 48 h compared with those of control cells. These results suggest denaturation and degradation of proteins and DNA fragmentation (all cell death-related processes). The Raman spectroscopy results agreed with those of atomic force microscopy and conventional biological tests such as viability, TUNEL, and western blot assays. Therefore, Raman spectroscopy, with PCA, provides a noninvasive, label-free tool for assessment of cellular changes on the anti-cancer effect of BV.
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Affiliation(s)
- Gyeong Bok Jung
- Department of Physics Education, Chosun University, Gwangju, 61452, South Korea
- These authors contributed equally to this work
| | - Jeong-Eun Huh
- East-west Bone & Joint Research Institute, Kyung Hee University, 149, Sangil-dong, Gangdong-gu, Seoul, South Korea
- These authors contributed equally to this work
| | - Hyo-Jung Lee
- College of Korean Medicine, Kyung Hee University, 1, Hoegi-dong, Dongdaemun-gu, Seoul, South Korea
| | - Dohyun Kim
- Department of Industrial and Management Engineering, Myongji University, Gyeonggi-do 17058, South Korea
| | - Gi-Ja Lee
- Department of Biomedical Engineering College of Medicine, Kyung Hee University, Seoul 02447, South Korea
| | - Hun-Kuk Park
- Department of Biomedical Engineering College of Medicine, Kyung Hee University, Seoul 02447, South Korea
| | - Jae-Dong Lee
- Department of Acupuncture and Moxibustion, College of Korean Medicine, Kyung Hee University, 1, Hoegi-dong, Dongdaemun-gu, Seoul, South Korea
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18
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Uddin MA, Calabro RL, Kim DY, Graham KR. Halide exchange and surface modification of metal halide perovskite nanocrystals with alkyltrichlorosilanes. NANOSCALE 2018; 10:16919-16927. [PMID: 30178805 DOI: 10.1039/c8nr04763d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Metal halide perovskite nanocrystals have recently emerged as promising materials for light emitting displays and lasing applications due to their narrow emission wavelengths, high photoluminescence quantum yields, and readily adjustable emission wavelengths. For these metal halide perovskite nanocrystals to be useful in commercial applications, their stability must be increased and the photoluminescence quantum yields of the iodide (red emitting) and chloride (blue emitting) containing derivatives must also be increased. The photoluminescence quantum yields of blue emitting CsPbCl3 nanoparticles lag behind those of green emitting CsPbBr3 nanoparticles, with maximum photoluminescence quantum yields of 1-10% previously reported for CsPbCl3 as compared to 80-100% for CsPbBr3. Herein, we show that alkyltrichlorosilanes (R-SiCl3) can be used as Cl-sources for rapid anion exchange with host CsPbBr3 nanocrystals. This anion exchange reaction is advantageous in that it can be performed at room temperature and results in highly dispersible nanoparticles coated with siloxane shells. CsPbCl3 nanoparticles produced through Cl-exchange with R-SiCl3 show significantly improved long-term stability and high photoluminescence quantum yields of up to 12%. These siloxane coated nanocrystals are even stable in the presence of water, whereas CsPbCl3 nanoparticles synthesized through other routes rapidly degrade in the presence of water.
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Affiliation(s)
- Md Aslam Uddin
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, USA.
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19
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Radić DS, Pavlović VP, Lazović MM, Jovičić-Petrović JP, Karličić VM, Lalević BT, Raičević VB. Copper-tolerant yeasts: Raman spectroscopy in determination of bioaccumulation mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:21885-21893. [PMID: 28779342 DOI: 10.1007/s11356-017-9817-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 07/24/2017] [Indexed: 06/07/2023]
Abstract
Modern, efficient, and cost-effective approach to remediation of heavy metal-contaminated soil is based on the application of microorganisms. In this paper, four isolates from agricultural and urban contaminated soil showed abundant growth in the presence of copper(II) sulfate pentahydrate (CuSO4·5H2O) up to 2 mM. Selected yeasts were identified by molecular methods as Candida tropicalis (three isolates) and Schwanniomyces occidentalis (one isolate). C. tropicalis (4TD1101S) showed the highest percentage of bioaccumulation capabilities (94.37%), determined by the inductively coupled plasma optical emission spectrometry (ICP-OES). The Raman spectra of C. tropicalis (4TD1101S) analyzed in a medium with the addition of 2 mM CuSO4·5H2O showed certain increase in metallothionein production, which represents a specific response of the yeast species to the stress conditions. These results indicate that soil yeasts represent a potential for practical application in the bioremediation of contaminated environments.
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Affiliation(s)
- Danka S Radić
- Faculty of Agriculture, University of Belgrade, Nemanjina 6, Belgrade, Zemun, 11080, Serbia.
| | - Vera P Pavlović
- Faculty of Mechanical Engineering, University of Belgrade, Kraljice Marije 16, Belgrade, 11000, Serbia
| | - Milana M Lazović
- A BIO TECH LAB D.O.O, Vojvode Putnika 87, Sremska Kamenica, 21208, Serbia
| | | | - Vera M Karličić
- Faculty of Agriculture, University of Belgrade, Nemanjina 6, Belgrade, Zemun, 11080, Serbia
| | - Blažo T Lalević
- Faculty of Agriculture, University of Belgrade, Nemanjina 6, Belgrade, Zemun, 11080, Serbia
| | - Vera B Raičević
- Faculty of Agriculture, University of Belgrade, Nemanjina 6, Belgrade, Zemun, 11080, Serbia
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20
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Zinc Interactions With Brain-Derived Neurotrophic Factor and Related Peptide Fragments. VITAMINS AND HORMONES 2017; 104:29-56. [DOI: 10.1016/bs.vh.2016.10.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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21
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Tomas M, Tinti A, Bofill R, Capdevila M, Atrian S, Torreggiani A. Comparative Raman study of four plant metallothionein isoforms: Insights into their Zn(II) clusters and protein conformations. J Inorg Biochem 2016; 156:55-63. [DOI: 10.1016/j.jinorgbio.2015.12.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 12/17/2015] [Accepted: 12/28/2015] [Indexed: 02/06/2023]
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22
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Ultrasensitive determination of formaldehyde in environmental waters and food samples after derivatization and using silver nanoparticle assisted SERS. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1400-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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23
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Jung GB, Kim KA, Han I, Park YG, Park HK. Biochemical characterization of human gingival crevicular fluid during orthodontic tooth movement using Raman spectroscopy. BIOMEDICAL OPTICS EXPRESS 2014; 5:3508-20. [PMID: 25360368 PMCID: PMC4206320 DOI: 10.1364/boe.5.003508] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 08/28/2014] [Accepted: 09/01/2014] [Indexed: 05/22/2023]
Abstract
This study used Raman spectroscopy to report the first human gingival crevicular fluid (GCF) biochemical characterization during the early phase of orthodontic tooth movement. This technique allows for label-free and noninvasive biochemical change monitoring in GCF during orthodontic tooth movement. Ten orthodontic patients (20.8 ± 2.5 years) participated in the study. GCF samples were obtained before (baseline, 0 days) and during orthodontic treatment at 1, 7 and 28 days. For Raman spectroscopic measurement, GCF samples (5 µl) were deposited onto a gold-coated substrate, then dried at room temperature. Raman spectra GCF analysis during orthodontic treatment indicated that the hydroxyapatite to primarily collagen-dominated matrix band (phosphate 984 cm(-1)/amide I 1667 cm(-1)) intensity ratio decreased at day 7 (P < 0.05). The carbonate apatite to hydroxyapatite ratio (carbonate 1088 cm(-1)/phosphate 984 cm(-1)) was significantly higher on day 7 compared to day 0 (P < 0.05). These results indicate that demineralization occurs during the alveolar bone remodeling process. We also found notable peak shifts in the amide I range during orthodontic tooth movement. The 1658 cm(-1) in baseline red shifted to 1667 cm(-1) at orthodontic treatment day 7. Curve fitting in the amide I (1615-1725 cm(-1)) range demonstrated that increased random coil conformation was accompanied by a decrease in β-sheet structure during orthodontic tooth movement. Thus, we suggest Raman spectroscopy could be used for label-free, non-invasive GCF quality assessment during orthodontic tooth movement. Furthermore, this method may prove to be a powerful diagnostic and prognostic tool for monitoring orthodontic tooth movement in a clinical setting.
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Affiliation(s)
- Gyeong Bok Jung
- Department of Biomedical Engineering & Healthcare Industry Research Institute, College of Medicine, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, South Korea
- These authors contributed equally to this work
| | - Kyung-A Kim
- Department of Orthodontics, School of Dentistry, Kyung Hee University, 130-701, South Korea
- These authors contributed equally to this work
| | - Ihn Han
- Department of Biomedical Engineering & Healthcare Industry Research Institute, College of Medicine, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, South Korea
| | - Young-Guk Park
- Department of Orthodontics, School of Dentistry, Kyung Hee University, 130-701, South Korea
- co-corresponding author:
| | - Hun-Kuk Park
- Department of Biomedical Engineering & Healthcare Industry Research Institute, College of Medicine, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, South Korea
- Program of Medical Engineering, Kyung Hee University, Seoul 130-701, South Korea
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24
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Geng MJ, Liang SX, Liu W, Jin Y. Quantification of metallothioneins in the earthworm by lomefloxacin-europium(iii) fluorescent probe. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2014; 16:1923-1929. [PMID: 24924957 DOI: 10.1039/c4em00076e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new fluorimetric method was established for the determination of trace amounts of metallothioneins (MT) in earthworm, using a lomefloxacin-europium(iii) (LMLX-Eu(3+)) complex as a fluorescent probe. In a pH 6.5 Tris-HCl buffer solution, MT can markedly decrease the fluorescence intensity of LMLX-Eu(3+) at λ = 613 nm, and the magnitude of the decrease in this intensity was in direct proportion to the concentration of MT. The linear range was 0.08-20 mg L(-1) with a detection limit of 0.022 mg L(-1), and the recovery was in the range of 91.9-104.4%. The results show that the fluorimetric method is relatively accurate and sensitive to measurements of concentration for MT over a wide range. This method has been successfully applied to the determination of the concentration of MT induced by heavy metal ions (Cd(2+), Pb(2+), Cu(2+), Zn(2+)) in Eisenia andrei. The amount of MT increased significantly in a dose-dependent manner to the heavy-metal exposure, and these proteins can be used as biomarkers to assess the impact of heavy-metal contamination in soils. The method offered high sensitivity as well as accuracy with simple instrumentation and is suitable for direct quantification of total MT in Eisenia andrei.
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Affiliation(s)
- Meng-Jiao Geng
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, P. R. China.
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25
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Schmidt S, Reinecke A, Wojcik F, Pussak D, Hartmann L, Harrington MJ. Metal-Mediated Molecular Self-Healing in Histidine-Rich Mussel Peptides. Biomacromolecules 2014; 15:1644-52. [DOI: 10.1021/bm500017u] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephan Schmidt
- Departments of ‡Biomaterials and §Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Antje Reinecke
- Departments of ‡Biomaterials and §Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Felix Wojcik
- Departments of ‡Biomaterials and §Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Daniel Pussak
- Departments of ‡Biomaterials and §Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Laura Hartmann
- Departments of ‡Biomaterials and §Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Matthew James Harrington
- Departments of ‡Biomaterials and §Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
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26
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Isani G, Carpenè E. Metallothioneins, unconventional proteins from unconventional animals: a long journey from nematodes to mammals. Biomolecules 2014; 4:435-57. [PMID: 24970224 PMCID: PMC4101491 DOI: 10.3390/biom4020435] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 03/19/2014] [Accepted: 03/21/2014] [Indexed: 12/19/2022] Open
Abstract
Metallothioneins (MTs) are ubiquitous low molecular weight cysteine-rich proteins characterized by high affinity for d10 electron configuration metals, including essential (Zn and Cu) and non-essential (Cd and Hg) trace elements. The biological role of these ancient and well-conserved multifunctional proteins has been debated since MTs were first discovered in 1957. Their main hypothesized functions are: (1) homeostasis of Zn and Cu; (2) detoxification of Cd, and Hg; and (3) free radical scavenging. This review will focus on MTs in unconventional animals, those not traditionally studied in veterinary medicine but of increasing interest in this field of research. Living in different environments, these animals represent an incredible source of physiological and biochemical adaptations still partly unexplored. The study of metal-MT interactions is of great interest for clinicians and researchers working in veterinary medicine, food quality and endangered species conservation.
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Affiliation(s)
- Gloria Isani
- Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, via Tolara di sopra, 50, Ozzano Emilia, Bologna 40064, Italy.
| | - Emilio Carpenè
- Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, via Tolara di sopra, 50, Ozzano Emilia, Bologna 40064, Italy.
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27
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Ashwinkumar N, Maya S, Jayakumar R. Redox-responsive cystamine conjugated chitin–hyaluronic acid composite nanogels. RSC Adv 2014. [DOI: 10.1039/c4ra06578f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
CD44 receptor mediated the uptake of DOX-HA-Cys-CNG by colon cancer cells and the redox responsive release of DOX by the intracellular GSH.
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Affiliation(s)
- N. Ashwinkumar
- Amrita Centre for Nanosciences and Molecular Medicine
- Amrita Institute of Medical Sciences and Research Centre
- Amrita Vishwa Vidyapeetham University
- Kochi-682041, India
| | - S. Maya
- Amrita Centre for Nanosciences and Molecular Medicine
- Amrita Institute of Medical Sciences and Research Centre
- Amrita Vishwa Vidyapeetham University
- Kochi-682041, India
| | - R. Jayakumar
- Amrita Centre for Nanosciences and Molecular Medicine
- Amrita Institute of Medical Sciences and Research Centre
- Amrita Vishwa Vidyapeetham University
- Kochi-682041, India
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28
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Chatgilialoglu C, Ferreri C, Melchiorre M, Sansone A, Torreggiani A. Lipid geometrical isomerism: from chemistry to biology and diagnostics. Chem Rev 2013; 114:255-84. [PMID: 24050531 DOI: 10.1021/cr4002287] [Citation(s) in RCA: 126] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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29
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Non-enzymatic modifications in metallothioneins connected to lipid membrane damages: structural and biomimetic studies under reductive radical stress. J Proteomics 2013; 92:204-15. [PMID: 23542714 DOI: 10.1016/j.jprot.2013.02.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 02/08/2013] [Accepted: 02/10/2013] [Indexed: 11/20/2022]
Abstract
UNLABELLED Metallothioneins (MTs) are small cysteine-rich proteins with the ability to coordinate heavy metal atoms through metal-thiolate bonds, which are widely distributed among the animal and plant kingdoms. Multifunctional roles for MTs have been proposed, including their ability to scavenger various radicals and reactive oxygen species. In the present article we summarize available information of four MT polypeptides from different organisms, forming metal complexes with Zn(II), Cd(II) or Cu (I) ions. Non-enzymatic modifications of MTs under ionizing radiations and their consequences on the lipidic membrane compartment were studied by Raman spectroscopy and a biomimetic model, respectively. The latter is based on liposome technology and allows to measure the trans unsaturated fatty acid content as a result of reductive radical stress on MTs. BIOLOGICAL SIGNIFICANCE The effect of radical stress on the cell metabolism and functions is a very active field of research connecting various disciplines in life sciences. In this contest tandem radical damage has been the subject of recent investigations that pointed out its harmfulness in the general scenario of establishing the consequences of radical stress. By using biomimetic models of tandem damage we have for the first time tested the capability of metallothioneins (MTs), small metalloproteins rich of Cys residues, to damage another cell compartment like lipid membranes when they are undergone to reductive radical stress. The connection of MT reactivity with membrane lipid transformation can give a contribution to the puzzling context of radical stress occurring to biomolecules and the role as biological signaling. To this purpose, MT polypeptides from different organisms, exhibiting different sequence peculiarities, have been analyzed here. The spectroscopic analysis of these systems has allowed to identify modifications affecting metal-thiolate clusters, cystines, and Met residues, acting as efficient interceptors of reducing radical species. The chemical mechanism involving sulfur-containing moieties under reductive conditions discloses new scenarios that bring to the loss of sulfur-centered radicals by desulfurization reactions that change the natural sequences of MTs. Ala is a genetically coded amino acid, therefore the mutation of Cys to Ala occurring to a sequence by the radical process so far discussed, corresponds to a post-translational modification. Research on such mutation connected also to a free radical stress will be important to contribute for a complete picture of the degeneration associated to diseases and aging. Analogously, the Met to Aba mutation occurring after reductive stress transforms a natural amino acid into a natural, non-genetically-coded congener. Aba corresponds to a homologation of the alkyl chains normally present in genetically codified amino acids, such as methyl (in Ala) and isopropyl (in Leu), with an ethyl unit. Based on alkyl substitution, this modification can therefore be studied in order to understand its general consequences on the structure-activity relationships in proteins and, in particular, on molecular interactions. This article is part of a Special issue entitled: Posttranslational Protein modifications in biology and Medicine.
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30
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Ferraz P, Fidalgo F, Almeida A, Teixeira J. Phytostabilization of nickel by the zinc and cadmium hyperaccumulator Solanum nigrum L. Are metallothioneins involved? PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2012; 57:254-60. [PMID: 22763093 DOI: 10.1016/j.plaphy.2012.05.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Accepted: 05/29/2012] [Indexed: 05/08/2023]
Abstract
Some heavy metals (HM) are highly reactive and consequently can be toxic to living cells when present at high levels. Consequently, strategies for reducing HM toxicity in the environmental must be undertaken. This work focused on evaluating the Nickel (Ni) accumulation potential of the hyperaccumulator Solanum nigrum L., and the participation of metallothioneins (MT) in the plant Ni homeostasis. Metallothioneins (MT) are gene-encoded metal chelators that participate in the transport, sequestration and storage of metals. After different periods of exposure to different Ni concentrations, plant biometric and biochemical parameters were accessed to determine the effects caused by this pollutant. Semi-quantitative RT-PCR reactions were performed to investigate the specific accumulation of MT-related transcripts throughout the plant and in response to Ni exposure. The data obtained revealed that Ni induced toxicity symptoms and accumulated mostly in roots, where it caused membrane damage in the shock-treated plants, with a parallel increase of free proline content, suggesting that proline participates in protecting root cells from oxidative stress. The MT-specific mRNA accumulation analysis showed that MT2a- and MT2d-encoding genes are constitutively active, that Ni stimulated their transcript accumulation, and also that Ni induced the de novo accumulation of MT2c- and MT3-related transcripts in shoots, exerting no influence on MT1 mRNA accumulation. These results strongly suggest the involvement of MT2a, MT2c, MT2d and MT3 in S. nigrum Ni homeostasis and detoxification, this way contributing to the clarification of the roles the various types of MTs play in metal homeostasis and detoxification in plants.
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Affiliation(s)
- Pedro Ferraz
- BioFIG-Center for Biodiversity, Functional & Integrative Genomics, Portugal.
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Babula P, Masarik M, Adam V, Eckschlager T, Stiborova M, Trnkova L, Skutkova H, Provaznik I, Hubalek J, Kizek R. Mammalian metallothioneins: properties and functions. Metallomics 2012; 4:739-50. [PMID: 22791193 DOI: 10.1039/c2mt20081c] [Citation(s) in RCA: 179] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Metallothioneins (MT) are a family of ubiquitous proteins, whose role is still discussed in numerous papers, but their affinity to some metal ions is undisputable. These cysteine-rich proteins are connected with antioxidant activity and protective effects on biomolecules against free radicals, especially reactive oxygen species. In this review, the connection between zinc(II) ions, reactive oxygen species, heavy metal ions and metallothioneins is demonstrated with respect to effect of these proteins on cell proliferation and a possible negative role in resistance to heavy metal-based and non-heavy metal-based drugs.
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Affiliation(s)
- Petr Babula
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00 Brno, Czech Republic
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Ryvolova M, Adam V, Kizek R. Analysis of metallothionein by capillary electrophoresis. J Chromatogr A 2012; 1226:31-42. [DOI: 10.1016/j.chroma.2011.10.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 09/30/2011] [Accepted: 10/01/2011] [Indexed: 02/05/2023]
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Abstract
Metallothioneins (MT) are a family of small cysteine rich proteins, which since their discovery in 1957, have been implicated in a range of roles including toxic metal detoxification, protection against oxidative stress, and as a metallochaperone involved in the homeostasis of both zinc and copper. The most well studied member of the family is the mammalian metallothionein, which consists of two domains: a β-domain with 9 cysteine residues, which sequesters 3 Cd(2+) or Zn(2+) or 6 Cu(+) ions, and an α-domain with 11 cysteine residues and, which sequesters 4 Cd(2+) or Zn(2+) or 6 Cu(+) ions. Despite over half a century of research, the exact functions of MT are still unknown. Much of current research aims to elucidate the mechanism of metal binding, as well as to isolate intermediates in metal exchange reactions; reactions necessary to maintain homeostatic equilibrium. These studies further our understanding of the role(s) of this remarkable and ubiquitous protein. Recently, supermetallated forms of the protein, where supermetallation describes metallation in excess of traditional levels, have been reported. These species may potentially be the metal exchange intermediates necessary to maintain homeostatic equilibrium. This review focuses on recent advances in the understanding of the mechanistic properties of metal binding, the implications for the metal induced protein folding reactions proposed for metallothionein metallation, the value of "magic numbers", which we informally define as the commonly determined metal-to-protein stoichiometric ratios and the significance of the new supermetallated states of the protein and the possible interpretation of the structural properties of this new metallation status. Together we provide a commentary on current experimental and theoretical advances and frame our consideration in terms of the possible functions of MT.
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