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Zhao Z, Yao J, Li H, Lan J, Hollert H, Zhao X. Interaction of polystyrene nanoplastics and hemoglobin is determined by both particle curvature and available surface area. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 899:165617. [PMID: 37478940 DOI: 10.1016/j.scitotenv.2023.165617] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/13/2023] [Accepted: 07/16/2023] [Indexed: 07/23/2023]
Abstract
Understanding nanoplastic (NP, or nanoparticle in general) toxicity requires establishing the causal relationships between the physical properties of the nanoparticles and their biological impact. We use spectroscopic, zeta-potential, and dynamic light scattering (DLS) techniques to investigate the formation, structure, and catalytic properties of hemoglobin corona complexes with polystyrene NPs (0-10 mg/mL) of various diameters (20, 50, 100, 500, and 5000 nm). Resonance light scattering, zeta-potential analysis, and DLS demonstrated that hemoglobin corona complexes formed different forms of aggregates with NPs in terms of diameter. Medium-sized (100 nm) NPs induced the most significant conformational alterations in the protein corona compared to smaller and larger ones, which was revealed by spectroscopic assays. However, the catalase-like activity of hemoglobin was promoted in the presence of 100 nm NPs by as high as 35.2 %. NP curvature and surface area are antagonistic factors that govern the conformation of proteins together. This also suggests that 100 nm NPs are more likely to disrupt protein-dependent physiological processes at a given mass concentration than small or large NPs.
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Affiliation(s)
- Zongshan Zhao
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Jiaqiang Yao
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Haimei Li
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Jing Lan
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Henner Hollert
- Department for Evolutionary Ecology and Environmental Toxicology, Goethe University, Frankfurt am Main 60438, Germany
| | - Xingchen Zhao
- Department for Evolutionary Ecology and Environmental Toxicology, Goethe University, Frankfurt am Main 60438, Germany.
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Afzal A, Beavers WN, Skaar EP, Calhoun MC, Richardson KA, Landstreet SR, Cliffel DE, Wright D, Bastarache JA, Ware LB. Ultraviolet light oxidation of fresh hemoglobin eliminates aggregate formation seen in commercially sourced hemoglobin. Blood Cells Mol Dis 2023; 98:102699. [PMID: 36027791 PMCID: PMC10024311 DOI: 10.1016/j.bcmd.2022.102699] [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: 06/05/2022] [Revised: 08/02/2022] [Accepted: 08/11/2022] [Indexed: 11/17/2022]
Abstract
Elevated levels of circulating cell-free hemoglobin (CFH) are an integral feature of several clinical conditions including sickle cell anemia, sepsis, hemodialysis and cardiopulmonary bypass. Oxidized (Fe3+, ferric) hemoglobin contributes to the pathophysiology of these disease states and is therefore widely studied in experimental models, many of which use commercially sourced CFH. In this study, we treated human endothelial cells with commercially sourced ferric hemoglobin and observed the appearance of dense cytoplasmic aggregates (CAgg) over time. These CAgg were intensely autofluorescent, altered intracellular structures (such as mitochondria), formed in multiple cell types and with different media composition, and formed regardless of the presence or absence of cells. An in-depth chemical analysis of these CAgg revealed that they contain inorganic components and are not pure hemoglobin. To oxidize freshly isolated hemoglobin without addition of an oxidizing agent, we developed a novel method to convert ferrous CFH to ferric CFH using ultraviolet light without the need for additional redox agents. Unlike commercial ferric hemoglobin, treatment of cells with the fresh ferric hemoglobin did not lead to CAgg formation. These studies suggest that commercially sourced CFH may contain stabilizers and additives which contribute to CAgg formation.
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Affiliation(s)
- Aqeela Afzal
- Department of Neurological Surgery, Division of Surgical Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
| | - William N Beavers
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA; Department of Pathobiological Sciences, School of Veterinary Medicine, Louisina State University and Agricultural and Mechanical College, Baton Rouge, LA, USA
| | - Eric P Skaar
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | | | | | - Stuart R Landstreet
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - David E Cliffel
- Department of Chemistry, Vanderbilt University, Nashville, TN, USA
| | - David Wright
- Department of Chemistry, Vanderbilt University, Nashville, TN, USA
| | - Julie A Bastarache
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA; Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN, USA
| | - Lorraine B Ware
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA.
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Human Erythrocytes Exposed to Phthalates and Their Metabolites Alter Antioxidant Enzyme Activity and Hemoglobin Oxidation. Int J Mol Sci 2020; 21:ijms21124480. [PMID: 32599721 PMCID: PMC7350025 DOI: 10.3390/ijms21124480] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 12/12/2022] Open
Abstract
Phthalates used as plasticizers have become a part of human life because of their important role in various industries. Human exposure to these compounds is unavoidable, and therefore their mechanisms of toxicity should be investigated. Due to their structure and function, human erythrocytes are increasingly used as a cell model for testing the in vitro toxicity of various xenobiotics. Therefore, the purpose of our study was to assess the effect of selected phthalates on methemoglobin (metHb), reactive oxygen species (ROS) including hydroxyl radical levels, as well as the activity of antioxidative enzymes, such as superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px), in human erythrocytes. Erythrocytes were incubated with di-n-butyl phthalate (DBP), butylbenzyl phthalate (BBP), and their metabolites, i.e., mono-n-butyl phthalate (MBP) and monobenzyl phthalate (MBzP), at concentrations ranging from 0.5 to 100 µg/mL for 6 or 24 h. This study shows that the analyzed phthalates disturbed the redox balance in human erythrocytes. DBP and BBP, at much lower concentrations than their metabolites, caused a statistically significant increase of metHb and ROS, including hydroxyl radical levels, and changed the activity of antioxidant enzymes. The studied phthalates disturbed the redox balance in human erythrocytes, which may contribute to the accelerated removal of these cells from the circulation.
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Hemoglobin catalyzes CoA degradation and thiol addition to flavonoids. Sci Rep 2018; 8:1282. [PMID: 29352172 PMCID: PMC5775311 DOI: 10.1038/s41598-018-19585-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 01/03/2018] [Indexed: 11/18/2022] Open
Abstract
In the presence of CoA, cell-free extracts prepared from porcine liver was found to convert 7,8-dihydroxyflavone (DHF) to a pantetheine conjugate, which was a novel flavonoid. We purified a 7,8-DHF-converting enzyme from the extracts, and identified it as hemoglobin (Hb). The purified Hb showed the following two activities: (i) degradation of CoA into pantetheine through hydrolytic cleavage to yield pantetheine and 3′-phospho-adenosine-5′-diphosphate (ADP) independently of heme, and (ii) addition of a thiol (e.g., pantetheine, glutathione and cysteine) to 7,8-DHF through C-S bond formation. Human Hb also exhibited the above flavonoid-converting activity. In addition, heme-containing enzymes such as peroxidase and catalase added each of pantetheine, glutathione and cysteine to the flavonoid, although no pantetheine conjugates were synthesized when CoA was used as a substrate. These findings indicated that the thiol-conjugating activity is widely observed in heme-containing proteins. On the other hand, only Hb catalyzed the hydrolysis of CoA, followed by the thiol conjugation to synthesize the pantetheine conjugate. To the best of our knowledge, this is the first report showing that Hb has the catalytic ability to convert naturally occurring bioactive compounds, such as dietary flavonoids, to the corresponding conjugates in the presence of thiol donors or CoA.
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Li T, Yang G, Zhu Y, Tzang FC, Lau SH, Kwok SY, Wong BL, Liu L. Beneficial effects of novel cross-linked hemoglobin YQ23 on hemorrhagic shock in rats and pigs. J Surg Res 2016; 210:213-222. [PMID: 28457331 DOI: 10.1016/j.jss.2016.11.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 10/21/2016] [Accepted: 11/23/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND To overcome the problems of previously reported hemoglobin-based oxygen carriers, we developed a stabilized nonpolymeric cross-linked tetrameric hemoglobin solution (YQ23). The aims of this study were to investigate the oxygen carrying and releasing properties of this novel hemoglobin-based oxygen carrier and to determine whether it has beneficial effects for hemorrhagic shock. METHODS Using a hemorrhagic shock model in Sprague-Dawley rats and mini-pigs, we tested the effects of infusing 0.1, 0.3, and 0.5 g/kg YQ23 on animal survival, tissue oxygen delivery (DO2) and consumption (VO2), hemodynamics parameters, and liver, renal, and cardiac function. RESULTS YQ23 infusion increased the survival rate of rats and pigs with severe hemorrhagic shock in a dose-dependent manner. Moreover, it improved the hemodynamic parameters, cardiac output, DO2 and VO2, and the mitochondrial respiratory function of vital organs. Among the three doses of YQ23, 0.5 gHb/kg YQ23 achieved a similar beneficial effect as whole blood. CONCLUSIONS This study indicated that the novel cross-linked tetrameric hemoglobin YQ23 has good oxygen carrying and releasing properties and exhibits beneficial effects on hemorrhagic shock in rats and pigs by improving the oxygen carrying and delivery function of blood, which maintains organ function.
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Affiliation(s)
- Tao Li
- State Key Laboratory of Trauma, Burns and Combined Injury, Second Department of Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, P.R. China
| | - Guangming Yang
- State Key Laboratory of Trauma, Burns and Combined Injury, Second Department of Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, P.R. China
| | - Yu Zhu
- State Key Laboratory of Trauma, Burns and Combined Injury, Second Department of Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, P.R. China
| | | | | | - Sui-Yi Kwok
- New B Innovation Limited, Hong Kong, P.R. China
| | - Bing L Wong
- New B Innovation Limited, Hong Kong, P.R. China
| | - Liangming Liu
- State Key Laboratory of Trauma, Burns and Combined Injury, Second Department of Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, P.R. China.
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Lyons JA, Hilbers F, Caffrey M. Structure and Function of Bacterial Cytochrome c Oxidases. ADVANCES IN PHOTOSYNTHESIS AND RESPIRATION 2016. [DOI: 10.1007/978-94-017-7481-9_16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Guo C, Gynn M, Chang TMS. Extraction of superoxide dismutase, catalase, and carbonic anhydrase from stroma-free red blood cell hemolysate for the preparation of the nanobiotechnological complex of polyhemoglobin–superoxide dismutase–catalase–carbonic anhydrase. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2015; 43:157-62. [DOI: 10.3109/21691401.2015.1035479] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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True wild type and recombinant wild type cytochrome c oxidase from Paracoccus denitrificans show a 20-fold difference in their catalase activity. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2013; 1827:319-27. [DOI: 10.1016/j.bbabio.2012.10.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 10/15/2012] [Accepted: 10/18/2012] [Indexed: 11/19/2022]
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Pérez-Prior MT, Gómez-Bombarelli R, González-Sánchez MI, Valero E. Biocatalytic oxidation of phenolic compounds by bovine methemoglobin in the presence of H2O2: quantitative structure-activity relationships. JOURNAL OF HAZARDOUS MATERIALS 2012; 241-242:207-215. [PMID: 23040314 DOI: 10.1016/j.jhazmat.2012.09.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 09/04/2012] [Accepted: 09/14/2012] [Indexed: 06/01/2023]
Abstract
In the present work, 13 p-substituted phenols with different functional groups have been systematically evaluated as metHb substrates by means of HPLC analysis. Non-hyperbolic kinetics were observed and Hill coefficients in the 0.37-1.00 range were obtained. The catalytic constants and the Hill coefficients were found to be quantitatively correlated with two independent variables: the energy level of the highest-occupied molecular orbital (E(HOMO)), which describes the intrinsic redox activity of the substrates and the pK(a)-values, which are related to substrate ionization. Oxygen evolution in the presence of each phenol derivative was also measured, and good correlation between peroxidase-like and catalase-like activities of the protein was observed. It is also shown that bovine metHb, although less active than other peroxidases, may represent a good alternative from an economical point of view for phenol removal processes. The equations here obtained may serve as a basis to further explore the potential use of metHb-mediated reactions in the treatment of phenols in wastewaters and to predict which phenol will be removed most efficiently under this treatment with satisfactory reliability.
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Affiliation(s)
- M Teresa Pérez-Prior
- Department of Physical Chemistry, University of Castilla-La Mancha, Campus Universitario, E-02071 Albacete, Spain.
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Liu J, Guan J, Lu M, Kan Q, Li Z. Hemoglobin immobilized with modified "fish-in-net" approach for the catalytic removal of aniline. JOURNAL OF HAZARDOUS MATERIALS 2012; 217-218:156-163. [PMID: 22483438 DOI: 10.1016/j.jhazmat.2012.03.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 02/26/2012] [Accepted: 03/03/2012] [Indexed: 05/31/2023]
Abstract
Blood is a waste product of the slaughter industry, while its main component hemoglobin (Hb) is a pseudo-peroxidase which is able to oxidize polycyclic aromatic hydrocarbons (PAHs) in the presence of H(2)O(2). In order to use Hb for wastewater treatment, we encapsulated it in silica-based matrix by modified "fish-in-net" approach. The as-synthesized catalysts were characterized by SEM, TEM, BET and solid-state UV-vis spectroscopy. It was found that Hb was partially homogeneously dispersed in microspheres and showed more stable peroxidase-like activity than free Hb. Moreover, it had substantially increased storage stability as well as pH stability. It was used as biocatalyst to remove aniline in aqueous solution and gave a reduction of 65% aniline removal, while 76% in the presence of additive PEG. No significant activity loss was observed after ten runs. These experimental results suggest that the resultant product was a promising biocatalyst for aromatic wastewater treatment.
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Affiliation(s)
- Jiayin Liu
- Key Laboratory for Molecular Enzymology and Engineering, The Ministry of Education, Jilin University, Changchun 130012, China
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Catalase-like activity of human methemoglobin: A kinetic and mechanistic study. Arch Biochem Biophys 2011; 516:10-20. [DOI: 10.1016/j.abb.2011.09.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Revised: 08/23/2011] [Accepted: 09/13/2011] [Indexed: 02/02/2023]
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Fu R, Gupta R, Geng J, Dornevil K, Wang S, Zhang Y, Hendrich MP, Liu A. Enzyme reactivation by hydrogen peroxide in heme-based tryptophan dioxygenase. J Biol Chem 2011; 286:26541-54. [PMID: 21632548 PMCID: PMC3143619 DOI: 10.1074/jbc.m111.253237] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 05/29/2011] [Indexed: 11/06/2022] Open
Abstract
An intriguing mystery about tryptophan 2,3-dioxygenase is its hydrogen peroxide-triggered enzyme reactivation from the resting ferric oxidation state to the catalytically active ferrous form. In this study, we found that such an odd Fe(III) reduction by an oxidant depends on the presence of L-Trp, which ultimately serves as the reductant for the enzyme. In the peroxide reaction with tryptophan 2,3-dioxygenase, a previously unknown catalase-like activity was detected. A ferryl species (δ = 0.055 mm/s and ΔE(Q) = 1.755 mm/s) and a protein-based free radical (g = 2.0028 and 1.72 millitesla linewidth) were characterized by Mössbauer and EPR spectroscopy, respectively. This is the first compound ES-type of ferryl intermediate from a heme-based dioxygenase characterized by EPR and Mössbauer spectroscopy. Density functional theory calculations revealed the contribution of secondary ligand sphere to the spectroscopic properties of the ferryl species. In the presence of L-Trp, the reactivation was demonstrated by enzyme assays and by various spectroscopic techniques. A Trp-Trp dimer and a monooxygenated L-Trp were both observed as the enzyme reactivation by-products by mass spectrometry. Together, these results lead to the unraveling of an over 60-year old mystery of peroxide reactivation mechanism. These results may shed light on how a metalloenzyme maintains its catalytic activity in an oxidizing environment.
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Affiliation(s)
- Rong Fu
- From the Department of Chemistry, Georgia State University, Atlanta, Georgia 30303
| | - Rupal Gupta
- the Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, and
| | - Jiafeng Geng
- From the Department of Chemistry, Georgia State University, Atlanta, Georgia 30303
| | - Kednerlin Dornevil
- From the Department of Chemistry, Georgia State University, Atlanta, Georgia 30303
| | - Siming Wang
- From the Department of Chemistry, Georgia State University, Atlanta, Georgia 30303
| | - Yong Zhang
- the Department of Chemistry, Chemical Biology, and Biomedical Engineering, Stevens Institute of Technology, Castle Point on Hudson, Hoboken, New Jersey 07030
| | - Michael P. Hendrich
- the Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, and
| | - Aimin Liu
- From the Department of Chemistry, Georgia State University, Atlanta, Georgia 30303
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Phuoc LT, Laveille P, Chamouleau F, Renard G, Drone J, Coq B, Fajula F, Galarneau A. Phospholipid-templated silica nanocapsules as efficient polyenzymatic biocatalysts. Dalton Trans 2010; 39:8511-20. [DOI: 10.1039/c001146k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Laveille P, Falcimaigne A, Chamouleau F, Renard G, Drone J, Fajula F, Pulvin S, Thomas D, Bailly C, Galarneau A. Hemoglobin immobilized on mesoporous silica as effective material for the removal of polycyclic aromatic hydrocarbons pollutants from water. NEW J CHEM 2010. [DOI: 10.1039/c0nj00161a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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