1
|
Maina MB, Al-Hilaly YK, Serpell LC. Dityrosine cross-linking and its potential roles in Alzheimer's disease. Front Neurosci 2023; 17:1132670. [PMID: 37034163 PMCID: PMC10075315 DOI: 10.3389/fnins.2023.1132670] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 03/01/2023] [Indexed: 04/11/2023] Open
Abstract
Oxidative stress is a significant source of damage that accumulates during aging and contributes to Alzheimer's disease (AD) pathogenesis. Oxidation of proteins can give rise to covalent links between adjacent tyrosines known as dityrosine (DiY) cross-linking, amongst other modifications, and this observation suggests that DiY could serve as a biomarker of accumulated oxidative stress over the lifespan. Many studies have focused on understanding the contribution of DiY to AD pathogenesis and have revealed that DiY crosslinks can be found in both Aβ and tau deposits - the two key proteins involved in the formation of amyloid plaques and tau tangles, respectively. However, there is no consensus yet in the field on the impact of DiY on Aβ and tau function, aggregation, and toxicity. Here we review the current understanding of the role of DiY on Aβ and tau gathered over the last 20 years since the first observation, and discuss the effect of this modification for Aβ and tau aggregation, and its potential as a biomarker for AD.
Collapse
Affiliation(s)
- Mahmoud B. Maina
- Sussex Neuroscience, School of Life Sciences, University of Sussex, Falmer, United Kingdom
- Biomedical Science Research and Training Centre, College of Medical Sciences, Yobe State University, Damaturu, Nigeria
| | - Youssra K. Al-Hilaly
- Sussex Neuroscience, School of Life Sciences, University of Sussex, Falmer, United Kingdom
- Department of Chemistry, College of Science, Mustansiriyah University, Baghdad, Iraq
| | - Louise C. Serpell
- Sussex Neuroscience, School of Life Sciences, University of Sussex, Falmer, United Kingdom
- *Correspondence: Louise C. Serpell,
| |
Collapse
|
2
|
Sato Y, Yamada A, Miyanaga M, Wang DH. Association of Vegetable and Fruit Consumption with Urinary Oxidative Biomarkers in Teenaged Girls: A School-Based Pilot Study in Japan. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:10474. [PMID: 36078190 PMCID: PMC9518434 DOI: 10.3390/ijerph191710474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/16/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
Hexanoyl-lysine (HEL), 8-hydroxy-2'deoxyguanosine (8-OHdG), and dityrosine (DT) have served as potential biomarkers for detecting oxidative modified lipids, DNA, and proteins in biological samples, respectively. Whether regular higher levels of consumption of vegetables/fruit (V/F) would decrease oxidative modification of these biomolecules in the body remain unelucidated. To examine the association of regular V/F consumption with the generation of these reactive oxygen species-induced biomarkers, this study evaluated V/F consumption in a school-based sample of teenaged girls (mean age 15.6 ± 1.7 years, n = 103), and quantified the formation of oxidative stress biomarkers in their urine. Only 19.4% and 23.3% of participants reported that they consumed the recommended daily amount of vegetables and fruits, respectively. Individuals who consumed lower levels of fruit (<100g/day) or vegetables (<250g/day) had significantly higher HEL excretion in their urine than those who consumed higher levels of fruit (≥100g/day) (p < 0.05) or vegetables (≥250g/day) (p = 0.057). The results of a multiple regression analysis showed that vegetable consumption was an important inhibiting factor of early lipid peroxidation measured as HEL in urine, independent of various confounders (β = - 0.332, p < 0.05). The findings suggest that relatively higher consumption of vegetables would help in the prevention of early lipid peroxidation in adolescents.
Collapse
Affiliation(s)
- Yoshiko Sato
- Department of Bioscience, Faculty of Life Science, Okayama University of Science, Okayama 700-0005, Japan
- Wakayama Shin–ai Junior and Senior High School, Wakayama 640-8151, Japan
| | - Ai Yamada
- Japan Industrial Safety and Health Association, Osaka 550-0001, Japan
| | - Masamitsu Miyanaga
- Department of Bioscience, Faculty of Life Science, Okayama University of Science, Okayama 700-0005, Japan
| | - Da-Hong Wang
- Department of Bioscience, Faculty of Life Science, Okayama University of Science, Okayama 700-0005, Japan
| |
Collapse
|
3
|
Maina MB, Al-Hilaly YK, Oakley S, Burra G, Khanom T, Biasetti L, Mengham K, Marshall K, Harrington CR, Wischik CM, Serpell LC. Dityrosine Cross-links are Present in Alzheimer's Disease-derived Tau Oligomers and Paired Helical Filaments (PHF) which Promotes the Stability of the PHF-core Tau (297-391) In Vitro. J Mol Biol 2022; 434:167785. [PMID: 35961386 DOI: 10.1016/j.jmb.2022.167785] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 08/02/2022] [Accepted: 08/03/2022] [Indexed: 11/30/2022]
Abstract
A characteristic hallmark of Alzheimer's Disease (AD) is the pathological aggregation and deposition of tau into paired helical filaments (PHF) in neurofibrillary tangles (NFTs). Oxidative stress is an early event during AD pathogenesis and is associated with tau-mediated AD pathology. Oxidative environments can result in the formation of covalent dityrosine crosslinks that can increase protein stability and insolubility. Dityrosine cross-linking has been shown in Aβ plaques in AD and α-synuclein aggregates in Lewy bodies in ex vivo tissue sections, and this modification may increase the insolubility of these aggregates and their resistance to degradation. Using the PHF-core tau fragment (residues 297 - 391) as a model, we have previously demonstrated that dityrosine formation traps tau assemblies to reduce further elongation. However, it is unknown whether dityrosine crosslinks are found in tau deposits in vivo in AD and its relevance to disease mechanism is unclear. Here, using transmission electron microscope (TEM) double immunogold-labelling, we reveal that neurofibrillary NFTs in AD are heavily decorated with dityrosine crosslinks alongside tau. Single immunogold-labelling TEM and fluorescence spectroscopy revealed the presence of dityrosine on AD brain-derived tau oligomers and fibrils. Using the tau (297-391) PHF-core fragment as a model, we further showed that prefibrillar tau species are more amenable to dityrosine crosslinking than tau fibrils. Dityrosine formation results in heat and SDS stability of oxidised prefibrillar and fibrillar tau assemblies. This finding has implications for understanding the mechanism governing the insolubility and toxicity of tau assemblies in vivo.
Collapse
Affiliation(s)
- Mahmoud B Maina
- Sussex Neuroscience, School of Life Sciences, University of Sussex UK; Biomedical Science Research and Training Centre, Yobe State University, Nigeria. https://twitter.com/mahmoudbukar
| | - Youssra K Al-Hilaly
- Sussex Neuroscience, School of Life Sciences, University of Sussex UK; Chemistry Department, College of Sciences, Mustansiriyah University, Baghdad, Iraq
| | - Sebastian Oakley
- Sussex Neuroscience, School of Life Sciences, University of Sussex UK
| | - Gunasekhar Burra
- Sussex Neuroscience, School of Life Sciences, University of Sussex UK; Analytical Development Biologics, Biopharmaceutical Development, Syngene International Limited, Biocon Park, Bommasandra Jigani Link Road, Bangalore 560009, India
| | - Tahmida Khanom
- Sussex Neuroscience, School of Life Sciences, University of Sussex UK
| | - Luca Biasetti
- Sussex Neuroscience, School of Life Sciences, University of Sussex UK
| | - Kurtis Mengham
- Sussex Neuroscience, School of Life Sciences, University of Sussex UK
| | - Karen Marshall
- Sussex Neuroscience, School of Life Sciences, University of Sussex UK
| | - Charles R Harrington
- Institute of Medical Sciences, University of Aberdeen, UK; TauRx Therapeutics Ltd, Aberdeen, UK
| | - Claude M Wischik
- Institute of Medical Sciences, University of Aberdeen, UK; TauRx Therapeutics Ltd, Aberdeen, UK
| | - Louise C Serpell
- Sussex Neuroscience, School of Life Sciences, University of Sussex UK.
| |
Collapse
|
4
|
Radomska K, Wolszczak M. Spontaneous and Ionizing Radiation-Induced Aggregation of Human Serum Albumin: Dityrosine as a Fluorescent Probe. Int J Mol Sci 2022; 23:ijms23158090. [PMID: 35897662 PMCID: PMC9331647 DOI: 10.3390/ijms23158090] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 02/04/2023] Open
Abstract
The use of spectroscopic techniques has shown that human serum albumin (HSA) undergoes reversible self-aggregation through protein−protein interactions. It ensures the subsequent overlapping of electron clouds along with the stiffening of the conformation of the interpenetrating network of amino acids of adjacent HSA molecules. The HSA oxidation process related to the transfer of one electron was investigated by pulse radiolysis and photochemical methods. It has been shown that the irradiation of HSA solutions under oxidative stress conditions results in the formation of stable protein aggregates. The HSA aggregates induced by ionizing radiation are characterized by specific fluorescence compared to the emission of non-irradiated solutions. We assume that HSA dimers are mainly responsible for the new emission. Dityrosine produced by the intermolecular recombination of protein tyrosine radicals as a result of radiolysis of an aqueous solution of the protein is the main cause of HSA aggregation by cross-linking. Analysis of the oxidation process of HSA confirmed that the reaction of mild oxidants (Br2•−, N3•, SO4•−) with albumin leads to the formation of covalent bonds between tyrosine residues. In the case of •OH radicals and partly, Cl2•−, species other than DT are formed. The light emission of this species is similar to the emission of self-associated HSA.
Collapse
|
5
|
Viray CM, van Magill B, Zreiqat H, Ramaswamy Y. Stereolithographic Visible-Light Printing of Poly(l-glutamic acid) Hydrogel Scaffolds. ACS Biomater Sci Eng 2022; 8:1115-1131. [PMID: 35179029 DOI: 10.1021/acsbiomaterials.1c01519] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Bioprinting is a promising fabrication technique aimed at developing biologically functional, tissue-like constructs for various biomedical applications. Among the different bioprinting approaches, vat polymerization-based techniques offer the highest feature resolution compared to more commonly used extrusion-based methods and therefore have greater potential to be utilized for printing complex hierarchical tissue architectures. Although significant efforts have been directed toward harnessing digital light processing techniques for high-resolution bioprinting, the use of stereolithography (SLA) setups for producing distinct hydrogel filaments smaller than 20 μm has received less attention. Improving the bioprinting resolution is still a technical challenge that must consider both the practical limitations of the bioprinter apparatus and the formulation of the cytocompatible bioresin. In this study, we developed a novel bioresin compatible with SLA and capable of printing high-resolution features. This resin, composed of a biosynthetic polypeptide poly(l-glutamic acid) functionalized with tyramine moieties (PLGA-Tyr), was crosslinked using a visible-light photoinitiator system. Varying concentrations of PLGA-Tyr and the co-photoinitiator were evaluated for the hydrogel system's gelation ability, swelling characteristics, degradation profiles, mechanical properties, and cell viability post-encapsulation. This study introduces a custom-built, cost-effective, visible-light SLA bioprinting system named the "MicroNC". Using the newly developed visible-light bioresin, we demonstrated for the first time the ability to fabricate hydrogel scaffolds with well-resolved filaments (less than 8 μm in width) capable of supporting cell viability and proliferation and directing cellular morphology at the single-cell level for up to 14 days. Overall, these experiments have underscored the exciting potential of using the visible-light-photoinitiated PLGA-Tyr material system for developing physiologically relevant in vitro hydrogel scaffolds with feature resolutions comparable to the dimensions of individual human cells for a wide range of biomedical applications.
Collapse
Affiliation(s)
- Christina Marie Viray
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia.,ARC Training Centre for Innovative BioEngineering, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Benjamin van Magill
- School of Aerospace, Mechanical, and Mechatronic Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Hala Zreiqat
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia.,ARC Training Centre for Innovative BioEngineering, The University of Sydney, Sydney, New South Wales 2006, Australia.,Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Yogambha Ramaswamy
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia.,Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia
| |
Collapse
|
6
|
Pheomelanin Effect on UVB Radiation-Induced Oxidation/Nitration of l-Tyrosine. Int J Mol Sci 2021; 23:ijms23010267. [PMID: 35008693 PMCID: PMC8745751 DOI: 10.3390/ijms23010267] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/20/2021] [Accepted: 12/23/2021] [Indexed: 11/25/2022] Open
Abstract
Pheomelanin is a natural yellow-reddish sulfur-containing pigment derived from tyrosinase-catalyzed oxidation of tyrosine in presence of cysteine. Generally, the formation of melanin pigments is a protective response against the damaging effects of UV radiation in skin. However, pheomelanin, like other photosensitizing substances, can trigger, following exposure to UV radiation, photochemical reactions capable of modifying and damaging cellular components. The photoproperties of this natural pigment have been studied by analyzing pheomelanin effect on oxidation/nitration of tyrosine induced by UVB radiation at different pH values and in presence of iron ions. Photoproperties of pheomelanin can be modulated by various experimental conditions, ranging from the photoprotection to the triggering of potentially damaging photochemical reactions. The study of the photomodification of l-Tyrosine in the presence of the natural pigment pheomelanin has a special relevance, since this tyrosine oxidation/nitration pathway can potentially occur in vivo in tissues exposed to sunlight and play a role in the mechanisms of tissue damage induced by UV radiation.
Collapse
|
7
|
Fuentes-Lemus E, Hägglund P, López-Alarcón C, Davies MJ. Oxidative Crosslinking of Peptides and Proteins: Mechanisms of Formation, Detection, Characterization and Quantification. Molecules 2021; 27:15. [PMID: 35011250 PMCID: PMC8746199 DOI: 10.3390/molecules27010015] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/17/2021] [Accepted: 12/18/2021] [Indexed: 12/14/2022] Open
Abstract
Covalent crosslinks within or between proteins play a key role in determining the structure and function of proteins. Some of these are formed intentionally by either enzymatic or molecular reactions and are critical to normal physiological function. Others are generated as a consequence of exposure to oxidants (radicals, excited states or two-electron species) and other endogenous or external stimuli, or as a result of the actions of a number of enzymes (e.g., oxidases and peroxidases). Increasing evidence indicates that the accumulation of unwanted crosslinks, as is seen in ageing and multiple pathologies, has adverse effects on biological function. In this article, we review the spectrum of crosslinks, both reducible and non-reducible, currently known to be formed on proteins; the mechanisms of their formation; and experimental approaches to the detection, identification and characterization of these species.
Collapse
Affiliation(s)
- Eduardo Fuentes-Lemus
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, 2200 Copenhagen, Denmark; (E.F.-L.); (P.H.)
| | - Per Hägglund
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, 2200 Copenhagen, Denmark; (E.F.-L.); (P.H.)
| | - Camilo López-Alarcón
- Departamento de Química Física, Facultad de Química y de Farmacia, Pontificia Universidad Catolica de Chile, Santiago 7820436, Chile;
| | - Michael J. Davies
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, 2200 Copenhagen, Denmark; (E.F.-L.); (P.H.)
| |
Collapse
|
8
|
Sharina I, Lezgyieva K, Krutsenko Y, Martin E. Higher susceptibility to heme oxidation and lower protein stability of the rare α 1C517Yβ 1 sGC variant associated with moyamoya syndrome. Biochem Pharmacol 2021; 186:114459. [PMID: 33571505 PMCID: PMC8052303 DOI: 10.1016/j.bcp.2021.114459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/22/2020] [Accepted: 01/29/2021] [Indexed: 12/20/2022]
Abstract
NO sensitive soluble guanylyl cyclase (sGC) plays a key role in mediating physiological functions of NO. Genetic alterations of the GUCY1A3 gene, coding for the α1 subunit of sGC, are associated with several cardiovascular dysfunctions. A rare sGC variant with Cys517 → Tyr substitution in the α1subunit, has been associated with moyamoya disease and achalasia. In this report we characterize the properties of this rare sGC variant. Purified α1C517Yβ1 sGC preserved only ~25% of its cGMP-forming activity and showed an elevated Km for GTP substrate. However, the mutant enzyme retained a high affinity for and robust activation by NO, similar to wild type sGC. Purified α1C517Yβ1 enzyme was more sensitive to specific sGC heme oxidizers and less responsive to heme reducing agents. When expressed in COS7 cells, α1C517Yβ1 sGC showed a much stronger response to cinaciguat or gemfibrozil, which targets apo-sGC or sGC with ferric heme, as compared to its NO response or the relative response of the wild type sGC. A stronger response to cinaciguat was also observed for purified α1C517Yβ1 in the absence of reducing agents. In COS7 cells, αCys517β sGC was less stable than the wild type enzyme under normal conditions and exhibited accelerated degradation upon induction of cellular oxidative stress. We conclude that diminished cGMP-forming activity of this sGC variant is aggravated by its high susceptibility to oxidative stress and diminished protein stability. The combination of these deficiencies contributes to the severity of observed moyamoya and achalasia symptoms in human carriers of this rare α1C517Yβ1 sGC variant.
Collapse
Affiliation(s)
- Iraida Sharina
- University of Texas Health Science Center, McGovern Medical School, Department of Internal Medicine, Division of Cardiology, United States
| | - Karina Lezgyieva
- School of Science and Technology, Nazarbayev University, Astana, Kazakhstan
| | | | - Emil Martin
- University of Texas Health Science Center, McGovern Medical School, Department of Internal Medicine, Division of Cardiology, United States.
| |
Collapse
|
9
|
Kornecki JF, Carballares D, Tardioli PW, Rodrigues RC, Berenguer-Murcia Á, Alcántara AR, Fernandez-Lafuente R. Enzyme production ofd-gluconic acid and glucose oxidase: successful tales of cascade reactions. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00819b] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This review mainly focuses on the use of glucose oxidase in the production ofd-gluconic acid, which is a reactant of undoubtable interest in different industrial areas. As example of diverse enzymatic cascade reactions.
Collapse
Affiliation(s)
- Jakub F. Kornecki
- Departamento de Biocatálisis
- ICP-CSIC
- Campus UAM-CSIC
- 28049 Madrid
- Spain
| | - Diego Carballares
- Departamento de Biocatálisis
- ICP-CSIC
- Campus UAM-CSIC
- 28049 Madrid
- Spain
| | - Paulo W. Tardioli
- Postgraduate Program in Chemical Engineering (PPGEQ)
- Department of Chemical Engineering
- Federal University of São Carlos
- 13565-905 São Carlos
- Brazil
| | - Rafael C. Rodrigues
- Biocatalysis and Enzyme Technology Lab
- Institute of Food Science and Technology
- Federal University of Rio Grande do Sul
- Porto Alegre
- Brazil
| | - Ángel Berenguer-Murcia
- Departamento de Química Inorgánica e Instituto Universitario de Materiales
- Universidad de Alicante
- Alicante 03080
- Spain
| | - Andrés R. Alcántara
- Departamento de Química en Ciencias Farmacéuticas
- Facultad de Farmacia
- Universidad Complutense de Madrid
- 28040-Madrid
- Spain
| | | |
Collapse
|
10
|
Brown JL, Yates EA, Bielecki M, Olczak T, Smalley JW. Potential role for Streptococcus gordonii-derived hydrogen peroxide in heme acquisition by Porphyromonas gingivalis. Mol Oral Microbiol 2019; 33:322-335. [PMID: 29847019 DOI: 10.1111/omi.12229] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/25/2018] [Indexed: 01/16/2023]
Abstract
Streptococcus gordonii, an accessory pathogen and early colonizer of plaque, co-aggregates with many oral species including Porphyromonas gingivalis. It causes α-hemolysis on blood agar, a process mediated by H2 O2 and thought to involve concomitant oxidation of hemoglobin (Hb). Porphyromonas gingivalis has a growth requirement for heme, which is acquired mainly from Hb. The paradigm for Hb heme acquisition involves the initial oxidation of oxyhemoglobin (oxyHb) to methemoglobin (metHb), followed by heme release and extraction through the actions of K-gingipain protease and/or the HmuY hemophore-like protein. The ability of S. gordonii to mediate Hb oxidation may potentially aid heme capture during co-aggregation with P. gingivalis. Hemoglobin derived from zones of S. gordonii α-hemolysis was found to be metHb. Generation of metHb from oxyHb by S. gordonii cells was inhibited by catalase, and correlated with levels of cellular H2 O2 production. Generation of metHb by S. gordonii occurred through the higher Hb oxidation state of ferrylhemoglobin. Heme complexation by the P. gingivalis HmuY was employed as a measure of the ease of heme capture from metHb. HmuY was able to extract iron(III)protoporphyrin IX from metHb derived from zones of S. gordonii α-hemolysis and from metHb generated by the action of S. gordonii cells on isolated oxyHb. The rate of HmuY-Fe(III)heme complex formation from S. gordonii-mediated metHb was greater than from an equivalent concentration of auto-oxidized metHb. It is concluded that S. gordonii may potentially aid heme acquisition by P. gingivalis by facilitating metHb formation in the presence of oxyHb.
Collapse
Affiliation(s)
- J L Brown
- School of Dentistry, Institute of Clinical Sciences, University of Liverpool, Liverpool, UK
| | - E A Yates
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, UK
| | - M Bielecki
- Laboratory of Medical Biology, Faculty of Biotechnology, University of Wrocław, Wrocław, Poland
| | - T Olczak
- Laboratory of Medical Biology, Faculty of Biotechnology, University of Wrocław, Wrocław, Poland
| | - J W Smalley
- School of Dentistry, Institute of Clinical Sciences, University of Liverpool, Liverpool, UK
| |
Collapse
|
11
|
Wang F, Yang W, Hu X. Discovery of High Affinity Receptors for Dityrosine through Inverse Virtual Screening and Docking and Molecular Dynamics. Int J Mol Sci 2018; 20:ijms20010115. [PMID: 30597963 PMCID: PMC6337580 DOI: 10.3390/ijms20010115] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 12/21/2018] [Accepted: 12/23/2018] [Indexed: 01/22/2023] Open
Abstract
Dityrosine is the product of oxidation that has been linked to a number of serious pathological conditions. Evidence indicates that high amounts of dityrosine exist in oxidized milk powders and some milk related foodstuffs, further reducing the nutritional value of oxidized proteins. Therefore, we hypothesize that some receptors related to special diseases would be targets for dityrosine. However, the mechanisms of the interaction of dityrosine with probable targets are still unknown. In the present work, an inverse virtual screening approach was performed to screen possible novel targets for dityrosine. Molecular docking studies were performed on a panel of targets extracted from the potential drug target database (PDTD) to optimize and validate the screening results. Firstly, two different conformations cis- and trans- were found for dityrosine during minimization. Moreover, Tubulin (αT) (−11.0 kcal/mol) was identified as a target for cis-dityrosine (CDT), targets including αT (−11.2 kcal/mol) and thyroid hormone receptor beta-1 (−10.7 kcal/mol) presented high binding affinities for trans-dityrosine (TDT). Furthermore, in order to provide binding complexes with higher precision, the three docked systems were further refined by performing thermo dynamic simulations. A series of techniques for searching for the most stable binding pose and the calculation of binding free energy are elaborately provided in this work. The major interactions between these targets and dityrosine were hydrophobic, electrostatic and hydrogen bonding. The application of inverse virtual screening method may facilitate the prediction of unknown targets for known ligands, and direct future experimental assays.
Collapse
Affiliation(s)
- Fangfang Wang
- School of Life Science, Linyi University, Linyi 276000, China.
| | - Wei Yang
- Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia.
- Arieh Warshel Institute of Computational Biology, the Chinese University of Hong Kong, 2001 Longxiang Road, Longgang District, Shenzhen 518000, China.
| | - Xiaojun Hu
- School of Life Science, Linyi University, Linyi 276000, China.
| |
Collapse
|
12
|
Bao Y, Ertbjerg P. Effects of protein oxidation on the texture and water-holding of meat: a review. Crit Rev Food Sci Nutr 2018; 59:3564-3578. [DOI: 10.1080/10408398.2018.1498444] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yulong Bao
- State Key Laboratory of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu Province, China
- Department of Food and Nutrition, University of Helsinki, Helsinki, Finland
| | - Per Ertbjerg
- Department of Food and Nutrition, University of Helsinki, Helsinki, Finland
| |
Collapse
|
13
|
Hägglund P, Mariotti M, Davies MJ. Identification and characterization of protein cross-links induced by oxidative reactions. Expert Rev Proteomics 2018; 15:665-681. [DOI: 10.1080/14789450.2018.1509710] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Per Hägglund
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Michele Mariotti
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Michael J. Davies
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
14
|
Mukherjee S, Kapp EA, Lothian A, Roberts AM, Vasil'ev YV, Boughton BA, Barnham KJ, Kok WM, Hutton CA, Masters CL, Bush AI, Beckman JS, Dey SG, Roberts BR. Characterization and Identification of Dityrosine Cross-Linked Peptides Using Tandem Mass Spectrometry. Anal Chem 2017; 89:6136-6145. [PMID: 28453255 DOI: 10.1021/acs.analchem.7b00941] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The use of mass spectrometry coupled with chemical cross-linking of proteins has become a powerful tool for proteins structure and interactions studies. Unlike structural analysis of proteins using chemical reagents specific for lysine or cysteine residues, identification of gas-phase fragmentation patterns of endogenous dityrosine cross-linked peptides have not been investigated. Dityrosine cross-linking in proteins and peptides are clinical markers of oxidative stress, aging, and neurodegenerative diseases including Alzheimer's disease and Parkinson's disease. In this study, we investigated and characterized the fragmentation pattern of a synthetically prepared dityrosine cross-linked dimer of Aβ(1-16) using ESI tandem mass spectrometry. We then detailed the fragmentation pattern of dityrosine cross-linked Aβ(1-16), using collision induced dissociation (CID), higher-energy collision induced dissociation (HCD), electron transfer dissociation (ETD), and electron capture dissociation (ECD). Application of these generic fragmentation rules of dityrosine cross-linked peptides allowed for the identification of dityrosine cross-links in peptides of Aβ and α-synuclein generated in vitro by enzymatic peroxidation. We report, for the first time, the dityrosine cross-linked residues in human hemoglobin and α-synuclein under oxidative conditions. Together these tools open up the potential for automated analysis of this naturally occurring post-translation modification in neurodegenerative diseases as well as other pathological conditions.
Collapse
Affiliation(s)
- Soumya Mukherjee
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne , 30 Royal Parade, Parkville, Victoria 3052, Australia.,Department of Inorganic Chemistry, Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700032, India
| | - Eugene A Kapp
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne , 30 Royal Parade, Parkville, Victoria 3052, Australia.,Cooperative Research Centre for Mental Health , Parkville, Victoria 3052, Australia
| | - Amber Lothian
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne , 30 Royal Parade, Parkville, Victoria 3052, Australia.,Cooperative Research Centre for Mental Health , Parkville, Victoria 3052, Australia
| | - Anne M Roberts
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne , 30 Royal Parade, Parkville, Victoria 3052, Australia.,Cooperative Research Centre for Mental Health , Parkville, Victoria 3052, Australia
| | - Yury V Vasil'ev
- Linus Pauling Institute, Department of Biochemistry and Biophysics, Oregon State University , Corvallis, Oregon 97331, United States of America
| | - Berin A Boughton
- Metabolomics Australia, School of Biosciences, The University of Melbourne , Parkville, Victoria 3052, Australia
| | - Kevin J Barnham
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne , 30 Royal Parade, Parkville, Victoria 3052, Australia.,Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne , Parkville, Victoria 3052, Australia
| | - W Mei Kok
- Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne , Parkville, Victoria 3052, Australia.,School of Chemistry, The University of Melbourne , Parkville, Victoria 3052, Australia
| | - Craig A Hutton
- Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne , Parkville, Victoria 3052, Australia.,School of Chemistry, The University of Melbourne , Parkville, Victoria 3052, Australia
| | - Colin L Masters
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne , 30 Royal Parade, Parkville, Victoria 3052, Australia.,Cooperative Research Centre for Mental Health , Parkville, Victoria 3052, Australia
| | - Ashley I Bush
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne , 30 Royal Parade, Parkville, Victoria 3052, Australia.,Cooperative Research Centre for Mental Health , Parkville, Victoria 3052, Australia
| | - Joseph S Beckman
- Linus Pauling Institute, Department of Biochemistry and Biophysics, Oregon State University , Corvallis, Oregon 97331, United States of America
| | - Somdatta Ghosh Dey
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700032, India
| | - Blaine R Roberts
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne , 30 Royal Parade, Parkville, Victoria 3052, Australia.,Cooperative Research Centre for Mental Health , Parkville, Victoria 3052, Australia
| |
Collapse
|
15
|
Agrawal A, Rathor R, Suryakumar G. Oxidative protein modification alters proteostasis under acute hypobaric hypoxia in skeletal muscles: a comprehensive in vivo study. Cell Stress Chaperones 2017; 22:429-443. [PMID: 28425050 PMCID: PMC5425375 DOI: 10.1007/s12192-017-0795-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 03/28/2017] [Accepted: 03/30/2017] [Indexed: 12/14/2022] Open
Abstract
While numerous maladies are associated with hypobaric hypoxia, muscle protein loss is an important under studied topic. Hence, the present study was designed to investigate the mechanism of muscle protein loss at HH. SD rats were divided into normoxic rats, while remaining rats were exposed to simulated hypoxia equivalent to 282-torr pressure (equal to an altitude of 7620 m, 8% oxygen), at 25 °C for 6, 12, and 24 h. Post-exposure rats were sacrificed and analysis was performed. Ergo, muscle loss-related changes were observed at 12 and 24 h post-HH exposure. An increased reactive oxygen species production and decreased thiol content was observed in HH-exposed rats. This disturbance caused substantial protein oxidative modification in the form of protein carbonyl content and advanced oxidation protein products. The analysis showed increase levels of bityrosine, oxidized tryptophan, lysine conjugate, lysine conjugate with MDA, protein hydroperoxide, and protein-MDA product. These changes were also in agreement with increase in lipid hydroperoxides and MDA content. HSP-70 and HSP-60 were upregulated significantly, and this finding is corroborated with increase in ER stress biomarker, GRP-78. Overloading of cells with misfolded proteins further activated degradative machinery. Consequently, pro-apoptotic signaling cascade, caspase-3, and C/EBP homologous protein were also activated in 24-h HH exposure. Release of tryptophan and tyrosine was also increased with 24-h HH exposure, indicated protein degradation. Elevation in resting intracellular calcium ion, [Ca2+]i, was also observed at 12- and 24-h HH exposure. The present study provides a detailed mechanistic representation of muscle protein loss during HH exposure.
Collapse
Affiliation(s)
- Akanksha Agrawal
- Cellular Biochemistry Division, Defence Institute of Physiology and Allied Sciences, Lucknow Road, Timarpur, Delhi -54, India
| | - Richa Rathor
- Cellular Biochemistry Division, Defence Institute of Physiology and Allied Sciences, Lucknow Road, Timarpur, Delhi -54, India.
| | - Geetha Suryakumar
- Cellular Biochemistry Division, Defence Institute of Physiology and Allied Sciences, Lucknow Road, Timarpur, Delhi -54, India
| |
Collapse
|
16
|
Dao ATN, Nakayama K, Shimokata J, Taniike T. Multilateral characterization of recombinant spider silk in thermal degradation. Polym Chem 2017. [DOI: 10.1039/c6py01954d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Elucidating the complex mechanism of thermo-oxidative degradation of recombinant spider silk by systematic characterization and correlation coefficient approach.
Collapse
Affiliation(s)
- Anh T. N. Dao
- School of Materials Science
- Japan Advanced Institute of Science and Technology
- Nomi
- Japan
| | - K. Nakayama
- School of Materials Science
- Japan Advanced Institute of Science and Technology
- Nomi
- Japan
| | - J. Shimokata
- School of Materials Science
- Japan Advanced Institute of Science and Technology
- Nomi
- Japan
- Spiber Inc
| | - T. Taniike
- School of Materials Science
- Japan Advanced Institute of Science and Technology
- Nomi
- Japan
| |
Collapse
|
17
|
Houée-Lévin C, Bobrowski K, Horakova L, Karademir B, Schöneich C, Davies MJ, Spickett CM. Exploring oxidative modifications of tyrosine: An update on mechanisms of formation, advances in analysis and biological consequences. Free Radic Res 2015; 49:347-73. [DOI: 10.3109/10715762.2015.1007968] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
18
|
Duce C, Bramanti E, Ghezzi L, Bernazzani L, Bonaduce I, Colombini MP, Spepi A, Biagi S, Tine MR. Interactions between inorganic pigments and proteinaceous binders in reference paint reconstructions. Dalton Trans 2013; 42:5975-84. [PMID: 23263363 DOI: 10.1039/c2dt32203j] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The degradation of the proteinaceous binders, ovalbumin (OVA) and casein, and their interactions with azurite (Cu(3)(CO(3))(2)(OH)(2)), calcium carbonate (CaCO(3)), hematite (Fe(2)O(3)) and red lead (Pb(3)O(4)) pigments were studied. A multi-analytical approach based on Thermogravimetric Analysis (TG), Differential Scanning Calorimetry (DSC), Fourier Transform Infrared Spectroscopy (FTIR) and Size Exclusion Chromatography (SEC) was used. The research was carried out on a set of paint reconstructions, which were analysed before and after artificial light ageing. We highlighted that in most cases the inorganic pigments interact with both proteins by decreasing their thermal stability and their intermolecular β-sheet content, and that ageing induces aggregation. We hypothesized that pigments intercalate between protein molecules, producing a partial disruption to the protein-protein intermolecular interaction. In the case of casein, these phenomena continued during ageing. In fact, we observed a complete disappearance of intermolecular β-sheets and an increase in intramolecular β-sheets and random coil during ageing. This result is in agreement with the structural properties of casein, whose aggregation is known to be induced by hydrophobic interactions. On the other hand, in aged OVA paint replicas, we observed the formation of new intermolecular β-sheets and an increase in thermostability. In addition FTIR showed oxidation of the side chains of the aged OVA/hematite sample and aged casein pigment samples, and SEC highlighted hydrolysis phenomena in aged carbonate, azurite and red lead/OVA complexes and in aged casein/calcium carbonate and casein/azurite samples.
Collapse
Affiliation(s)
- Celia Duce
- Dipartimento di Chimica e Chimica Industriale, Via Risorgimento 35, 56127 Pisa, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Natural history of the bruise: formation, elimination, and biological effects of oxidized hemoglobin. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:703571. [PMID: 23766858 PMCID: PMC3671564 DOI: 10.1155/2013/703571] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 04/12/2013] [Indexed: 02/02/2023]
Abstract
Numerous disease states are associated with hemolysis or hemorrhage. Because red cells in the extravascular space tend to lyse quickly, hemoglobin (Hb) is released and is prone to autoxidation producing MetHb. Inorganic and organic peroxides may convert Hb and MetHb to higher oxidation states such as ferrylHb. FerrylHb is not a single chemical entity but is a mixture of globin- and porphyrin-centered radicals and covalently cross-linked Hb multimers. Oxidized Hb species are potent prooxidants caused mainly by heme release from oxidized Hb. Moreover, ferrylHb is a strong proinflammatory agonist that targets vascular endothelial cells. This proinflammatory effect of ferrylHb requires actin polymerization, is characterized by the upregulation of proinflammatory adhesion molecules, and is independent of heme release. Deleterious effects of native Hb are controlled by haptoglobin (Hp) that binds cell-free Hb avidly and facilitates its removal from circulation through the CD163 macrophage scavenger receptor-mediated endocytosis. Under circumstances of Hb oxidation, Hp can prevent heme release from MetHb, but unfortunately the Hp-mediated removal of Hb is severely compromised when Hb is structurally altered such as in ferrylHb allowing deleterious downstream reactions to occur even in the presence of Hp.
Collapse
|
20
|
Oxidative stress in Mexicans with diffuse cutaneous systemic sclerosis. Rheumatol Int 2013; 33:2261-7. [DOI: 10.1007/s00296-013-2701-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 02/01/2013] [Indexed: 12/27/2022]
|
21
|
Pickering AM, Vojtovich L, Tower J, Davies KJA. Oxidative stress adaptation with acute, chronic, and repeated stress. Free Radic Biol Med 2013; 55:109-18. [PMID: 23142766 PMCID: PMC3687790 DOI: 10.1016/j.freeradbiomed.2012.11.001] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Revised: 10/07/2012] [Accepted: 11/02/2012] [Indexed: 12/15/2022]
Abstract
Oxidative stress adaptation, or hormesis, is an important mechanism by which cells and organisms respond to, and cope with, environmental and physiological shifts in the level of oxidative stress. Most studies of oxidative stress adaption have been limited to adaptation induced by acute stress. In contrast, many if not most environmental and physiological stresses are either repeated or chronic. In this study we find that both cultured mammalian cells and the fruit fly Drosophila melanogaster are capable of adapting to chronic or repeated stress by upregulating protective systems, such as their proteasomal proteolytic capacity to remove oxidized proteins. Repeated stress adaptation resulted in significant extension of adaptive responses. Repeated stresses must occur at sufficiently long intervals, however (12-h or more for MEF cells and 7 days or more for flies), for adaptation to be successful, and the levels of both repeated and chronic stress must be lower than is optimal for adaptation to acute stress. Regrettably, regimens of adaptation to both repeated and chronic stress that were successful for short-term survival in Drosophila nevertheless also caused significant reductions in life span for the flies. Thus, although both repeated and chronic stress can be tolerated, they may result in a shorter life.
Collapse
Affiliation(s)
- Andrew M. Pickering
- Ethel Percy Andrus Gerontology Center of the Davis School of Gerontology, The University of Southern California, Los Angeles, CA 90089, USA
- Molecular and Computational Biology Program, Department of Biological Sciences, Dornsife College of Letters, Arts & Sciences; The University of Southern California, Los Angeles, CA 90089, USA
| | - Lesya Vojtovich
- Ethel Percy Andrus Gerontology Center of the Davis School of Gerontology, The University of Southern California, Los Angeles, CA 90089, USA
| | - John Tower
- Molecular and Computational Biology Program, Department of Biological Sciences, Dornsife College of Letters, Arts & Sciences; The University of Southern California, Los Angeles, CA 90089, USA
| | - Kelvin J. A. Davies
- Ethel Percy Andrus Gerontology Center of the Davis School of Gerontology, The University of Southern California, Los Angeles, CA 90089, USA
- Molecular and Computational Biology Program, Department of Biological Sciences, Dornsife College of Letters, Arts & Sciences; The University of Southern California, Los Angeles, CA 90089, USA
- Senior author to whom correspondence should be addressed as follows: Prof. Kelvin J. A. Davies, Ethel Percy Andrus Gerontology Center, the University of Southern California, 3715 McClintock Avenue, Los Angeles, CA 90089-0191, U.S.A., Telephone: (213)740-8959, Fax number: (213)740-6462,
| |
Collapse
|
22
|
New strategy for selective and sensitive assay of cathepsin B using a dityrosine-based material. Anal Biochem 2013; 435:166-73. [PMID: 23348078 DOI: 10.1016/j.ab.2013.01.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 12/14/2012] [Accepted: 01/08/2013] [Indexed: 11/23/2022]
Abstract
The increasing number of reports for disease-related proteases has necessitated materials for the fast, sensitive, and specific assessment of protease activities. The purpose of this study was to synthesize and test a dityrosine-based substrate for the selective assay of a specific cysteine cathepsin. DBDY-Gly-INH)2 was synthesized from the conjugation of N,N'-diBoc-dityrosine (DBDY) with two molecules of glycine and isoniazid (INH) for this purpose. The fluorescence of DBDY (λex=284-320nm, λem=400-420nm) disappeared due to the quenching effect of INH. However, the protease-catalyzed hydrolysis resulted in the release of INH and recovered the fluorescence of DBDY. When reacted with 13 proteases, DBDY-Gly-INH)2 was hydrolyzed by the cysteine proteases only. Meeting the growing need to discriminate cysteine cathepsins (e.g., cathepsins B, L, and S found at high levels in various cancers), DBDY-Gly-INH)2 was tested as a substrate for cathepsins B, L, and S. Only cathepsin B catalyzed the hydrolysis reaction among the three cathepsins. The reaction rate followed the Michaelis-Menten kinetics, and the KM and kcat/KM values were 2.88μM and 3.87×10(3)M(-1)s(-1), respectively, which were comparable to those for the materials reported for the selective assay of cathepsin B. Considering the simple preparation of DBDY-(Gly-INH)2, DBDY-(Gly-INH)2 is believed to be valuable for the sensitive and selective assay of cathepsin B activity.
Collapse
|
23
|
Zhang W, Xiao S, Ahn DU. Protein Oxidation: Basic Principles and Implications for Meat Quality. Crit Rev Food Sci Nutr 2013; 53:1191-201. [DOI: 10.1080/10408398.2011.577540] [Citation(s) in RCA: 334] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
24
|
Akram M, Altaf M, Kabir-ud-Din, Al-Thabaiti SA. Kinetics and mechanism of the reduction of colloidal MnO2 by glycyl-leucine in the absence and presence of surfactants. JOURNAL OF SAUDI CHEMICAL SOCIETY 2012. [DOI: 10.1016/j.jscs.2010.12.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
25
|
Kim CJ, Lee DI, Lee CH, Ahn IS. A dityrosine-based substrate for a protease assay: Application for the selective assessment of papain and chymopapain activity. Anal Chim Acta 2012; 723:101-7. [DOI: 10.1016/j.aca.2012.02.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Revised: 02/06/2012] [Accepted: 02/18/2012] [Indexed: 11/15/2022]
|
26
|
Lysine-block-tyrosine block copolypeptides: Self-assembly, cross-linking, and conjugation of targeted ligand for drug encapsulation. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.01.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
27
|
Proteasome and Neurodegeneratıve Diseases. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2012; 109:397-414. [DOI: 10.1016/b978-0-12-397863-9.00011-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
28
|
Chen YM, Kuo CE, Lin CM, Shie PS, Chen TY. Cloning of crystallin from orange-spotted grouper and characterization of its activity as potential protective agent. RESULTS IN IMMUNOLOGY 2011; 1:60-9. [PMID: 24371554 DOI: 10.1016/j.rinim.2011.08.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 08/29/2011] [Accepted: 08/31/2011] [Indexed: 11/28/2022]
Abstract
Oxidative stress associated with nodavirus infection is poorly understood, especially pertaining to infection-mediated brain injury. Indirect evidence indicates that infection increases cellular abundance of reactive oxygen species (ROS) with consequent increase in cellular dityrosine production. The detection of dityrosine in nodavirus-infected grouper was demonstrated using immunohistochemical (IHC) staining. Proteomic analyses with eye tissues of healthy grouper revealed more abundant expression of crystallin protein in the eye than in various tissues, which was confirmed by real-time polymerase chain reaction and IHC analyses. Grouper crystallin belongs to a small heat shock protein family with chaperone-like function that prevents heat-induced and oxidative stress-induced protein aggregation. Recombinant crystallin induced nitric oxide (NO) production in RAW 264.7 cells after treatment. The results provide new insight into the pathogenesis of nodavirus and demonstrate an experimental rationale for antioxidant therapy research.
Collapse
Affiliation(s)
- Young-Mao Chen
- Laboratory of Molecular Genetics, Institute of Biotechnology, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan 70101, Taiwan ; Research Center of Ocean Environment and Technology, National Cheng Kung University, Tainan 70101, Taiwan ; Agriculture Biotechnology Research Center, National Cheng Kung University, Tainan 70101, Taiwan
| | - Cham-En Kuo
- Department of Nursing, Tzu Hui Institute of Technology, Pingtung 92641, Taiwan
| | - Chun-Mao Lin
- Graduate Institute of Medical Sciences, Taipei Medical University, Taipei 11031, Taiwan
| | - Pei-Shiuan Shie
- Laboratory of Molecular Genetics, Institute of Biotechnology, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan 70101, Taiwan ; Agriculture Biotechnology Research Center, National Cheng Kung University, Tainan 70101, Taiwan
| | - Tzong-Yueh Chen
- Laboratory of Molecular Genetics, Institute of Biotechnology, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan 70101, Taiwan ; Research Center of Ocean Environment and Technology, National Cheng Kung University, Tainan 70101, Taiwan ; Agriculture Biotechnology Research Center, National Cheng Kung University, Tainan 70101, Taiwan
| |
Collapse
|
29
|
Kipen HM, Gandhi S, Rich DQ, Ohman-Strickland P, Laumbach R, Fan ZH, Chen L, Laskin DL, Zhang J, Madura K. Acute decreases in proteasome pathway activity after inhalation of fresh diesel exhaust or secondary organic aerosol. ENVIRONMENTAL HEALTH PERSPECTIVES 2011; 119:658-63. [PMID: 21163722 PMCID: PMC3094417 DOI: 10.1289/ehp.1002784] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Accepted: 12/15/2010] [Indexed: 05/03/2023]
Abstract
BACKGROUND Epidemiologic studies consistently demonstrate an association between acute cardiopulmonary events and changes in air pollution; however, the mechanisms that underlie these associations are not completely understood. Oxidative stress and inflammation have been suggested to play a role in human responses to air pollution. The proteasome is an intracellular protein degradation system linked to both of these processes and may help mediate air pollution effects. OBJECTIVES In these studies, we determined whether acute experimental exposure to two different aerosols altered white blood cell (WBC) or red blood cell (RBC) proteasome activity in human subjects. One aerosol was fresh diesel exhaust (DE), and the other freshly generated secondary organic aerosol (SOA). METHODS Thirty-eight healthy subjects underwent 2-hr resting inhalation exposures to DE and separate exposures to clean air (CA); 26 subjects were exposed to DE, CA, and SOA. CA responses were subtracted from DE or SOA responses, and mixed linear models with F-tests were used to test the effect of exposure to each aerosol on WBC and RBC proteasome activity. RESULTS WBC proteasome activity was reduced 8% (p = 0.04) after exposure to either DE or SOA and decreased by 11.5% (p = 0.03) when SOA was analyzed alone. RBCs showed similar 8-10% declines in proteasome activity (p = 0.05 for DE alone). CONCLUSIONS Air pollution produces oxidative stress and inflammation in many experimental models, including humans. Two experimental aerosols caused rapid declines in proteasome activity in peripheral blood cells, supporting a key role for the proteasome in acute human responses to air pollution.
Collapse
Affiliation(s)
- Howard M Kipen
- Clinical Research and Occupational Medicine Division, Environmental and Occupational Health Sciences Institute, Piscataway, New Jersey 08854, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Buchert J, Ercili Cura D, Ma H, Gasparetti C, Monogioudi E, Faccio G, Mattinen M, Boer H, Partanen R, Selinheimo E, Lantto R, Kruus K. Crosslinking Food Proteins for Improved Functionality. Annu Rev Food Sci Technol 2010; 1:113-38. [DOI: 10.1146/annurev.food.080708.100841] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Johanna Buchert
- VTT Technical Research Center of Finland, Espoo, FI-02044 Finland;
| | | | - Hairan Ma
- VTT Technical Research Center of Finland, Espoo, FI-02044 Finland;
| | | | | | - Greta Faccio
- VTT Technical Research Center of Finland, Espoo, FI-02044 Finland;
| | - Maija Mattinen
- VTT Technical Research Center of Finland, Espoo, FI-02044 Finland;
| | - Harry Boer
- VTT Technical Research Center of Finland, Espoo, FI-02044 Finland;
| | - Riitta Partanen
- VTT Technical Research Center of Finland, Espoo, FI-02044 Finland;
| | | | - Raija Lantto
- VTT Technical Research Center of Finland, Espoo, FI-02044 Finland;
| | - Kristiina Kruus
- VTT Technical Research Center of Finland, Espoo, FI-02044 Finland;
| |
Collapse
|
31
|
Sommerburg O, Karius N, Siems W, Langhans CD, Leichsenring M, Breusing N, Grune T. Proteasomal degradation of beta-carotene metabolite--modified proteins. Biofactors 2009; 35:449-59. [PMID: 19787777 DOI: 10.1002/biof.59] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Free radical attack on beta-carotene results in the formation of high amounts of carotene breakdown products (CBPs) having biological activities. As several of the CBPs are reactive aldehydes, it has to be considered that these compounds are able to modify proteins. Therefore, the aim of the study was to investigate whether CBP-modification of proteins is leading to damaged proteins recognized and degraded by the proteasomal system. We used the model proteins tau and ferritin to test whether CBPs will modify them and whether such modifications lead to enhanced proteasomal degradation. To modify proteins, we used crude CBPs as a mixture obtained after hypochloric acid derived BC degradation, as well as several single compounds, as apo8'-carotenal, retinal, or beta-ionone. The majority of the CBPs found in our reaction mixture are well known metabolites as described earlier after BC degradation using different oxidants. CBPs are able to modify proteins, and in in vitro studies, we were able to demonstrate that the 20S proteasome is able to recognize and degrade CBP-modified proteins preferentially. In testing the proteolytic response of HT22 cells toward CBPs, we could demonstrate an enhanced protein turnover, which is sensitive to lactacystin. Interestingly, the proteasomal activity is resistant to treatment with CBP. On the other hand, we were able to demonstrate that supraphysiological levels of CBPs might lead to the formation of protein-CBP-adducts that are able to inhibit the proteasome. Therefore, the removal of CBP-modified proteins seems to be catalyzed by the proteasomal system and is effective, if the formation of CBPs is not overwhelming and leading to protein aggregates.
Collapse
Affiliation(s)
- Olaf Sommerburg
- Department of Pediatric Pulmonology, Children's University Hospital III, Heidelberg, Germany
| | | | | | | | | | | | | |
Collapse
|
32
|
Voss P, Horakova L, Jakstadt M, Kiekebusch D, Grune T. Ferritin oxidation and proteasomal degradation: Protection by antioxidants. Free Radic Res 2009; 40:673-83. [PMID: 16983994 DOI: 10.1080/10715760500419357] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The accumulation of oxidatively damaged proteins is a well-known hallmark of aging and several neurodegenerative diseases including Alzheimer's, Parkinson's and Huntigton's diseases. These highly oxidized protein aggregates are in general not degradable by the main intracellular proteolytic machinery, the proteasomal system. One possible strategy to reduce the accumulation of such oxidized protein aggregates is the prevention of the formation of oxidized protein derivatives or to reduce the protein oxidation to a degree that can be handled by the proteasome. To do so an antioxidative strategy might be successful. Therefore, we undertook the present study to test whether antioxidants are able to prevent the protein oxidation and to influence the proteasomal degradation of moderate oxidized proteins. As a model protein we choose ferritin. H2O2 induced a concentration dependent increase of protein oxidation accompanied by an increased proteolytic susceptibility. This increase of proteolytic susceptibility is limited to moderate hydrogen peroxide concentrations, whereas higher concentrations are accompanied by protein aggregate formation. Protective effects of the vitamin E derivative Trolox, the pyridoindole derivative Stobadine and of the standardized extracts of flavonoids from bark of Pinus Pinaster Pycnogenol and from leaves of Ginkgo biloba (EGb 761) were studied on moderate damaged ferritin.
Collapse
Affiliation(s)
- Peter Voss
- Research Institute for Environmental Medicine gGmbH, Heinrich-Heine-University, Duesseldorf, Germany.
| | | | | | | | | |
Collapse
|
33
|
Abstract
Riboflavin sensitized photodynamic modifications of high molecular weight Kininogen (HMWK) isolated from sheep (Avis-arias) plasma leads to inactivation of antiproteinase activity and formation of aggregated products. A continued disappearance of the inhibitory activity towards papain and formation of high molecular weight adducts was observed with increasing concentration of riboflavin and varying time periods of incubation reaching a maximum value of over 85% (loss in activity). Aggregates resisted dissociation upon heating at 100 degrees C in 1% SDS. Aggregation and photoinactivation of HMWK was promoted by the substitution of H2O for deuterium oxide (D2O), which is known to prolong the life span of singlet oxygen, and suppressed by sodium azide a known singlet oxygen quencher. Mannitol and thiourea (hydroxyl radical scavenger) did not protect the antiproteinase activity of HMWK. Treatment with reducing agent resulted in decrease of the aggregated products suggesting the possible involvement of disulfide linkages in protein crosslinking. Tryptophan fluorescence was completely lost and significant production of dityrosine was detected in photoinactivated HMWK aggregates. Changes in the far Ultra violet circular dichroism (u.v.c.d.) spectrum of HMWK was indicative of loss of secondary structure. Analysis of modifications induced in HMWK by riboflavin reveals that the processes proceed via a singlet oxygen mediated pathway. It is concluded that the susceptibility of HMWK to oxidation may arise from oxidative modifications by reactive oxygen species generated in plasma.
Collapse
Affiliation(s)
- Shahid P Baba
- Faculty of Life Science, Department of Biochemistry, Aligarh Muslim University, Aligarh-202002, India.
| | | | | |
Collapse
|
34
|
Abstract
Organisms are constantly exposed to various forms of reactive oxygen species (ROS) that lead to oxidation of proteins, nucleic acids, and lipids. Protein oxidation can involve cleavage of the polypeptide chain, modification of amino acid side chains, and conversion of the protein to derivatives that are highly sensitive to proteolytic degradation. Unlike other types of modification (except cysteine oxidation), oxidation of methionine residues to methionine sulfoxide is reversible; thus, cyclic oxidation and reduction of methionine residues leads to consumption of ROS and thereby increases the resistance of proteins to oxidation. The importance of protein oxidation in aging is supported by the observation that levels of oxidized proteins increase with animal age. The age-related accumulation of oxidized proteins may reflect age-related increases in rates of ROS generation, decreases in antioxidant activities, or losses in the capacity to degrade oxidized proteins.
Collapse
Affiliation(s)
- Earl R Stadtman
- National Heart, Lung, and Blood Institute, National Institutes of Health, Biochemistry and Biophysics Center, MSC-8012, Bethesda, MD 20892-8012, USA.
| |
Collapse
|
35
|
Dalsgaard TK, Larsen LB. Effect of photo-oxidation of major milk proteins on protein structure and hydrolysis by chymosin. Int Dairy J 2009. [DOI: 10.1016/j.idairyj.2008.12.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
36
|
Fonseca C, Domingues MRM, Simões C, Amado F, Domingues P. Reactivity of Tyr-Leu and Leu-Tyr dipeptides: identification of oxidation products by liquid chromatography-tandem mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2009; 44:681-693. [PMID: 19125397 DOI: 10.1002/jms.1543] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The exposure of peptides and proteins to reactive hydroxyl radicals results in covalent modifications of amino acid side-chains and protein backbone. In this study we have investigated the oxidation the isomeric peptides tyrosine-leucine (YL) and leucine-tyrosine (LY), by the hydroxyl radical formed under Fenton reaction (Fe(2+)/H(2)O(2)). Through mass spectrometry (MS), high-performance liquid chromatography (HPLC-MS) and electrospray tandem mass spectrometry (HPLC-MS(n)) measurements, we have identified and characterized the oxidation products of these two dipeptides. This approach allowed observing and identifying a wide variety of oxidation products, including isomeric forms of the oxidized dipeptides. We detected oxidation products with 1, 2, 3 and 4 oxygen atoms for both peptides; however, oxidation products with 5 oxygen atoms were only present in LY. LY dipeptide oxidation leads to more isomers with 1 and 2 oxygen atoms than YL (3 vs 5 and 4 vs 5, respectively). Formation of the peroxy group occurred preferentially in the C-terminal residue. We have also detected oxidation products with double bonds or keto groups, dimers (YL-YL and LY-LY) and other products as a result of cross-linking. Both amino acids in the dipeptides were oxidized although the peptides showed different oxidation products. Also, amino acid residues have shown different oxidation products depending on the relative position on the dipeptide. Results suggest that amino acids in the C-terminal position are more prone to oxidation.
Collapse
Affiliation(s)
- Conceição Fonseca
- Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | | | | | | | | |
Collapse
|
37
|
Kato Y, Dozaki N, Nakamura T, Kitamoto N, Yoshida A, Naito M, Kitamura M, Osawa T. Quantification of Modified Tyrosines in Healthy and Diabetic Human Urine using Liquid Chromatography/Tandem Mass Spectrometry. J Clin Biochem Nutr 2008; 44:67-78. [PMID: 19177191 PMCID: PMC2613502 DOI: 10.3164/jcbn.08-185] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2008] [Accepted: 07/30/2008] [Indexed: 12/17/2022] Open
Abstract
The quantification of urinary oxidized tyrosines, dityrosine (DiY), nitrotyrosine (NY), bromotyrosine (BrY), and dibromotyrosine (DiBrY), was accomplished by quadruple liquid chromatography-tandem mass spectrometry (LC/MS/MS). The sample was partially purified by solid phase extraction, and was then applied to the LC/MS/MS using multiple-reaction monitoring (MRM) methods. The analysis for the DiY quantification was done first. The residual samples were further butylated with n-butanol/HCl, and the other modified tyrosines were then quantified with isotopic dilution methods. MRM peaks of the modified tyrosines (DiY, NY, BrY, and DiBrY) from human urine were measured and the elution times coincided with the authentic and isotopic standards. The amounts of modified tyrosines in healthy human urine (n = 23) were 8.8 ± 0.6 (DiY), 1.4 ± 0.4 (NY), 3.8 ± 0.3 (BrY), and 0.7 ± 0.1 (DiBrY) µmol/mol of creatinine, respectively. A comparison of the modified tyrosines with urinary 8-oxo-deoxyguanosine, pentosidine, and Nε-(hexanoyl)lysine was also performed. Almost all products, except for NY, showed good correlations with each other. The amounts of the modified tyrosines (NY, BrY, and DiBrY) in the diabetic urine were higher than those in the urine from healthy people.
Collapse
Affiliation(s)
- Yoji Kato
- School of Human Science and Environment, University of Hyogo, Himeji 670-0092, Japan
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Protective role of 3-nitrotyrosine against gamma radiation-induced DNA strand breaks: A comparison study with tyrosine. Radiat Phys Chem Oxf Engl 1993 2008. [DOI: 10.1016/j.radphyschem.2008.05.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
39
|
Abstract
Oxidative Stress - Clinical Diagnostic SignificanceElevated free radical production and/or insufficient antioxidative defense results in cellular oxidant stress responses. Sustained and/or intense oxidative insults can overcome cell defenses resulting in accumulated damage to macromolecules, leading to loss of cell function, membrane damage, and ultimately to cell death. Oxidative stress (OS) can result from conditions including excessive physical stress, exposure to environmental pollution and xenobiotics, and smoking. Oxidative stress, as a pathophysiological mechanism, has been linked to numerous pathologies, poisonings, and the ageing process. Reactive oxygen species and reactive nitrogen species, endogenously or exogenously produced, can readily attack all classes of macromolecules (proteins, DNA, unsaturated fatty acid). The disrupted oxidative-reductive milieu proceeds via lipid peroxidation, altered antioxidative enzyme activities and depletion of non-enzymatic endogenous antioxidants, several of which can de detected in the pre-symptomatic phase of many diseases. Therefore, they could represent markers of altered metabolic and physiological homeostasis. Accordingly, from the point of view of routine clinical-diagnostic practice, it would be valuable to routinely analyze OS status parameters to earlier recognize potential disease states and provide the basis for preventative advance treatment with appropriate medicines.
Collapse
|
40
|
Stepuro AI, Adamchuk RI, Oparin AY, Stepuro II. Thiamine inhibits formation of dityrosine, a specific marker of oxidative injury, in reactions catalyzed by oxoferryl forms of hemoglobin. BIOCHEMISTRY (MOSCOW) 2008; 73:1031-41. [DOI: 10.1134/s0006297908090113] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
41
|
Lardinois OM, Tomer KB, Mason RP, Deterding LJ. Identification of protein radicals formed in the human neuroglobin-H2O2 reaction using immuno-spin trapping and mass spectrometry. Biochemistry 2008; 47:10440-8. [PMID: 18767815 DOI: 10.1021/bi800771k] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Neuroglobin (Ngb) is a recently discovered protein that shows only minor sequence similarity with myoglobin and hemoglobin but conforms to the typical 3-over-3 alpha-helical fold characteristic of vertebrate globins. An intriguing feature of Ngb is its heme hexacoordination in the absence of external ligands, observed both in the ferrous and in the ferric (met) forms. In Ngb, the imidazole of a histidine residue (His-64) in the distal position, above the heme plane, provides the sixth coordination bond. In this work, a valine residue was introduced at position 64 (H64V variant) to clarify the possible role(s) of the distal residue in protecting the heme iron of Ngb from attack by strong oxidants. SDS-PAGE analyses revealed that the oxidation of the H64V variant of metNgb by H 2O 2 resulted in the formation of dimeric and trimeric products in contrast to the native protein. Dityrosine cross-links were shown by their fluorescence to be present in the oligomeric products. When the spin trap 5,5-dimethyl-1-pyrroline N-oxide (DMPO) was included in the reaction mixture, nitrone adducts were detected by immuno-spin trapping. The specific location of the DMPO adducts on the H64V variant protein was determined by a mass spectrometry method that combines off-line immuno-spin trapping and chromatographic procedures. This method revealed Tyr-88 to be the site of modification by DMPO. The presence of His-64 in the wild-type protein results in the nearly complete loss of detectable radical adducts. Together, the data support the argument that wild-type Ngb is protected from attack by H 2O 2 by the coordinated distal His.
Collapse
Affiliation(s)
- Olivier M Lardinois
- Laboratory of Pharmacology, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709, USA.
| | | | | | | |
Collapse
|
42
|
Inflammatory sites as a source of plasma neopterin: Measurement of high levels of neopterin and markers of oxidative stress in pus drained from human abscesses. Clin Biochem 2008; 41:1078-83. [DOI: 10.1016/j.clinbiochem.2008.06.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2008] [Revised: 06/11/2008] [Accepted: 06/15/2008] [Indexed: 01/17/2023]
|
43
|
Abstract
Protein oxidation has been implicated in a variety of degenerative diseases as well as in the aging process. This unit describes techniques for the quantification of various protein oxidation products, including protein carbonyls, loss of protein thiol groups, dityrosine and nitrotyrosine, and isoaspartate formation. Such oxidatively modified products may also be used as biomarkers for the assessment of oxidative stress during aging and/or disease.
Collapse
Affiliation(s)
- L J Yan
- Southern Methodist University, Dallas, Texas, USA
| | | |
Collapse
|
44
|
Divalent cations stabilize GroEL under conditions of oxidative stress. Biochem Biophys Res Commun 2008; 368:625-30. [PMID: 18261461 DOI: 10.1016/j.bbrc.2008.01.126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2008] [Accepted: 01/22/2008] [Indexed: 11/22/2022]
Abstract
The divalent cations Mg(2+), Mn(2+), Zn(2+), Ca(2+), and Ni(2+) were found to protect against proteolysis a form of GroEL (ox-GroEL) prepared by exposing GroEL for 16h to 6mM hydrogen peroxide (H(2)O(2)). K(+) and other monovalent cations did not have any effect. Divalent cations also induced a conformational change of ox-GroEL that led to the decrease of its large exposed hydrophobic surfaces (exposed with H(2)O(2)). Ox-GroEL incubated with a divalent cation behaved like N-GroEL in that it could transiently interact with H(2)O(2)-inactivated rhodanese (ox-rhodanese), whereas ox-GroEL alone could strongly interact with ox-rhodanese. Although, ox-GroEL incubated with a divalent cation could not recover the ATPase activity (66%) lost with H(2)O(2), it could facilitate the reactivation of ox-rhodanese (>86% of active rhodanese recovered), without requiring ATP or the co-chaperonin, GroES. This is the first report to demonstrate a role for the divalent cations on the structure and function of ox-GroEL.
Collapse
|
45
|
Ptolemy AS, Lee R, Britz-McKibbin P. Strategies for comprehensive analysis of amino acid biomarkers of oxidative stress. Amino Acids 2007; 33:3-18. [PMID: 17514495 DOI: 10.1007/s00726-007-0542-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2007] [Accepted: 03/03/2007] [Indexed: 12/17/2022]
Abstract
Despite the wide interest in using modified amino acids as putative biomarkers of oxidative stress, many issues remain as to their overall reliability for early detection and diagnosis of diseases. In contrast to conventional single biomarker studies, comprehensive analysis of biomarkers offers an unbiased strategy for global assessment of modified amino acid metabolism due to reactive oxygen and nitrogen species. This review examines recent analytical techniques amenable for analysis of modified amino acids in biological samples reported during 2003-2007. Particular attention is devoted to the need for validated methods applicable to high-throughput analysis of multiple amino acid biomarkers, as well as consideration of sample pretreatment protocols on artifact formation for improved clinical relevance.
Collapse
Affiliation(s)
- A S Ptolemy
- Department of Chemistry, McMaster University, Hamilton, Ontario, Canada
| | | | | |
Collapse
|
46
|
Orhan H. Analyses of representative biomarkers of exposure and effect by chromatographic, mass spectrometric, and nuclear magnetic resonance techniques: method development and application in life sciences. J Sep Sci 2007; 30:149-74. [PMID: 17390611 DOI: 10.1002/jssc.200600322] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Biomarkers are essential tools in monitoring studies, which include environmental monitoring, biological monitoring, biological effect monitoring, and health surveillance, as well as drug development processes. Their discovery, validation, and analysis require highly sensitive and selective analytical technologies. In this regard, gas and liquid chromatography, mass spectrometry, and nuclear magnetic resonance spectroscopy have facilitated great achievements in all these areas. In addition and closely related to biomarkers, the ongoing developments in these techniques promise a better understanding of the nature and mechanisms of toxic effects originating from various chemical, biological, or physical sources. This Review compiles studies performed on selected biomarkers with respect to both method development and application. Section 1 summarizes the concept of biomarkers; their application in various industrial/occupational, agricultural, drug developmental, and medical/clinical platforms. This section also focuses on biotransformation studies in close relation to biomarker discovery and validation, and on major techniques utilized in this area. In Section 2, biotransformation of volatile anesthetics in humans with a focus on mercapturic acid derivatives as potential biomarkers of effect is reviewed. The use of GC-ECD, GC/MS, and 19F-NMR in these studies is described. Section 3 focuses on the analysis of aldehydic lipid peroxidation degradation products by GC-ECD in mammalian cells in which oxidative stress induced chemically, and in humans after various challenges; anesthetic exposure, ischemia-reperfusion, and controlled endurance exercise. In Section 4, method development for protein and DNA oxidation products by LC-tandem MS and its application in mammalian cells and in humans are summarized. Possibilities, limitations, and future perspectives are discussed in Section 5.
Collapse
Affiliation(s)
- Hilmi Orhan
- Department of Toxicology, Faculty of Pharmacy, Ege University, 35100 Bornova-Izmir, Turkey.
| |
Collapse
|
47
|
DiMarco T, Giulivi C. Current analytical methods for the detection of dityrosine, a biomarker of oxidative stress, in biological samples. MASS SPECTROMETRY REVIEWS 2007; 26:108-20. [PMID: 17019703 DOI: 10.1002/mas.20109] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Dityrosine is a fluorescent molecule formed as a result of normal posttranslational processing. In many structural proteins, dityrosine confers resistance to proteolysis and physicochemical trauma as a stabilizing crosslink. Dityrosine has also been found in oxidative/nitrative stress under a variety of conditions and biological systems. In this regard, it has been used as an important biomarker for oxidatively modified proteins during UV and gamma-irradiation, aging, and exposure to oxygen free radicals, nitrogen dioxide, peroxynitrite, and lipid hydroperoxides. Renewed interest in dityrosine and other tyrosine oxidation products as clinical indicators of oxidative modification has driven the development of important techniques for the specific analysis and quantification of these molecules. The presence of elevated levels of dityrosine in mammalian tissue and urine samples has been measured by chromatographic separation followed by mass spectrometry GC-MS and HPLC-MS/MS. Increases in dityrosine levels have been associated with pathologies such as eye cataracts, atherosclerosis, acute inflammation, and Alzheimer's disease. The continued development of, and increased accessibility to, improved mass spectrometric instrumentation will expand the capability, feasibility, and sensitivity with which specific biomarkers like dityrosine can be measured.
Collapse
Affiliation(s)
- Theresa DiMarco
- Department of Molecular Biosciences, University of California, Davis, California 95616, USA
| | | |
Collapse
|
48
|
Huang Y, Yu D, Hua Y, Qiu A. Detection of free radical transfer in lipoxygenase I-B-catalyzed linoleic acid-soybean protein interaction by electron spin resonance spectroscopy (ESR). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2006; 54:9216-20. [PMID: 17117812 DOI: 10.1021/jf061148q] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Effects of lipoxygenase I-B (LOX)-catalyzed oxidation of linoleic acid on soybean proteins was evaluated by electron spin resonance (ESR) and fluorescence spectroscopy in different model systems in the presence or absence of antioxidants. A strong central singlet signal was detected by ESR spectroscopy and identified as the carbon radical (g value range 2.0041-2.0054). A downfield shoulder attributed to the sulfur radical (g value 2.019-2.028) was also observed. The changes in soybean proteins were accompanied by an increase in fluorescence, indicating the formation of cross-links. Natural antioxidants such as ascorbic acid and alpha-tocopherol as well as synthetic antioxidants butyl hydroxytoluene (BHT) inhibited the development of both the free radical signal and the fluorescence when added to soybean proteins prior to incubation with linoleic acid and lipoxygenase I-B; the central singlet signal attributed to the carbon radical was reduced by 35-65%. This paper clearly indicates direct free radical transfer from oxidizing linoleic acid catalyzed by LOX to soybean proteins.
Collapse
Affiliation(s)
- Youru Huang
- Department of Biological Science and Food Engineering, Changshu Institute of Technology, Changshu 215500, Jiangsu Province, People's Republic of China
| | | | | | | |
Collapse
|
49
|
Shi WQ, Hu J, Zhao W, Su XY, Cai H, Zhao YF, Li YM. Identification of radiation-induced cross-linking between thymine and tryptophan by electrospray ionization-mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2006; 41:1205-11. [PMID: 16924597 DOI: 10.1002/jms.1090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Upon exposure to ionizing radiation, DNA undergoes a variety of modifications including the production of a covalent bond between the nucleobase thymine and aromatic amino acids. In this work, electrospray ionization-mass spectrometry(ESI-MS) was used to identify the gamma radiation-induced covalent cross-linking of model peptides (sequence YPPW and pYPPW) with the nucleobase thymine. Tandem electrospray ionization-mass spectrometry (ESI-MSn) was employed to investigate the cross-linking sites. The results showed that irrespective of whether tyrosine was phosphorylated or not, the nucleobase thymine was cross-linked with the tryptophan residue. Possible cross-linking mechanisms are proposed by investigating the related mass peaks.
Collapse
Affiliation(s)
- Wei-Qun Shi
- Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China
| | | | | | | | | | | | | |
Collapse
|
50
|
Bekman EM, Baranova OA, Gubareva EV, Shulenina LV, Moskvina SN, Danilogorskaya YA, Azizova OA. Evaluation of the resistance of blood plasma to oxidative stress by oxidizability of proteins and lipids during metal-catalyzed oxidation. Bull Exp Biol Med 2006; 142:299-303. [PMID: 17426834 DOI: 10.1007/s10517-006-0351-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A new approach for the evaluation of oxidizability of proteins and lipids in the same sample of blood plasma was proposed. We tested a method for evaluation of metal-catalyzed oxidation of fibrinogen by the formation of bityrosine cross-links during oxidation detected by the increase in fluorescence at 415 nm. A correlation was revealed between parameters of oxidizability estimated by this marker and carbonyl derivatives (dinitrophenylhydrazine method). Oxidizability of total proteins from whole plasma was compared with oxidizability of plasma lipids (marker malonic dialdehyde). Study of these parameters in patients with coronary heart disease showed that the proposed experimental approach allows us to divide the sample into several subgroups differing in the resistance to oxidative stress. These data can be used for diagnostic and prognostic purposes.
Collapse
Affiliation(s)
- E M Bekman
- Institute of Physicochemical Medicine, Russian Ministry of Health, Moscow
| | | | | | | | | | | | | |
Collapse
|