1
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Li Y, Zhu L, Wu X, Zhang Z, Pu R, Zheng Y, Zhang Z. Paper-in-Tip Bipolar Electrospray Mass Spectrometry for Real-Time Chemical Reaction Monitoring. Angew Chem Int Ed Engl 2024; 63:e202318169. [PMID: 38717236 DOI: 10.1002/anie.202318169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Indexed: 06/19/2024]
Abstract
Capturing short-lived intermediates at the molecular level is key to understanding the mechanism and dynamics of chemical reactions. Here, we have developed a paper-in-tip bipolar electrolytic electrospray mass spectrometry platform, in which a piece of triangular conductive paper incorporated into a plastic pipette tip serves not only as an electrospray emitter but also as a bipolar electrode (BPE), thus triggering both electrospray and electrolysis simultaneously upon application of a high voltage. The bipolar electrolysis induces a pair of redox reactions on both sides of BPE, enabling both electro-oxidation and electro-reduction processes regardless of the positive or negative ion mode, thus facilitating access to complementary structural information for mechanism elucidation. Our method enables real-time monitoring of transient intermediates (such as N,N-dimethylaniline radical cation, dopamine o-quinone (DAQ) and sulfenic acid with half-lives ranging from microseconds to minutes) and transient processes (such as DAQ cyclization with a rate constant of 0.15 s-1). This platform also provides key insights into electrocatalytic reactions such as Fe (III)-catalyzed dopamine oxidation to quinone species at physiological pH for neuromelanin formation.
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Affiliation(s)
- Yun Li
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, 710065, China
| | - Lixuan Zhu
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, 710065, China
| | - Xiaomeng Wu
- School of Electronic Engineering, Xi'an Shiyou University, Xi'an, 710065, China
| | - Zhiming Zhang
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, 710065, China
| | - Ruijin Pu
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, 710065, China
| | - Yajun Zheng
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, 710065, China
| | - Zhiping Zhang
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, 710065, China
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2
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Weierbach SM, Reynolds RP, Stephens SM, Vlasakakis KV, Ritter RT, White OM, Patel NH, Hayes EC, Dunmire S, Lambert KM. Chemoselective Oxidation of Thiols with Oxoammonium Cations. J Org Chem 2023; 88:11392-11410. [PMID: 35926190 DOI: 10.1021/acs.joc.2c01097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The oxidation of various aryl and aliphatic thiols with the commercially available and environmentally benign reagent Bobbitt's salt (1) has been investigated. The reaction affords the corresponding disulfide products in good to excellent yields (71-99%) and can be accomplished in water, methanol, or acetonitrile solvent. Moreover, the process is highly chemoselective, tolerating traditionally oxidation-labile groups such as free amines and alcohols. Combined experimental and computational studies reveal that the oxidation takes place via a polar two-electron process with concomitant and unexpected deoxygenation of the oxoammonium cation through homolysis of the weak N-O bond, differing from prototypical radical-based thiol couplings. This unusual consumption of the oxidant has significant implications for the development of new nitroxide-based radical traps for probing S-centered radicals, the advancement of new electrochemical or catalytic processes involving nitroxide/oxoammonium salt redox couples, and applications to biological systems.
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Affiliation(s)
- Shayne M Weierbach
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia 23529, United States
| | - Robert P Reynolds
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia 23529, United States
| | - Shannon M Stephens
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia 23529, United States
| | - Kostantinos V Vlasakakis
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia 23529, United States
| | - Ramsey T Ritter
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia 23529, United States
| | - Olivia M White
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia 23529, United States
| | - Nishi H Patel
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia 23529, United States
| | - Eric C Hayes
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia 23529, United States
| | - Sydney Dunmire
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia 23529, United States
| | - Kyle M Lambert
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia 23529, United States
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3
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Wen P, Xia C, Zhang L, Chen Y, Xu H, Cui G, Wang J. Effects of different dry heating temperatures on the spatial structure and amino acid residue side-chain oxidative modification of soybean isolated proteins. Food Chem 2023; 405:134795. [DOI: 10.1016/j.foodchem.2022.134795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 10/18/2022] [Accepted: 10/26/2022] [Indexed: 11/13/2022]
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4
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Yılmaz C, Othman Pirdawid A, Fidan Babat C, Konuş M, Çetin D, Kıvrak A, Algso MAS, Arslan Ş, Mutlu D, Otur Ç, Kurt Kızıldoğan A. A Thiophene Derivative, 2‐Bromo‐5‐(2‐(methylthio)phenyl)thiophene, Has Effective Anticancer Potential with Other Biological Properties. ChemistrySelect 2022. [DOI: 10.1002/slct.202200784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Can Yılmaz
- Department of Molecular Biology and Genetics Faculty of Science Van Yuzuncu Yil University 65080 Van Turkey
| | - Ahmed Othman Pirdawid
- Department of Molecular Biology and Genetics Faculty of Science Van Yuzuncu Yil University 65080 Van Turkey
| | - Ceylan Fidan Babat
- Department of Molecular Biology and Genetics Faculty of Science Van Yuzuncu Yil University 65080 Van Turkey
| | - Metin Konuş
- Department of Molecular Biology and Genetics Facuty of Arts and Science Hitit University 19030 Çorum Turkey
| | - Doğan Çetin
- Department of Molecular Biology and Genetics Faculty of Science Van Yuzuncu Yil University 65080 Van Turkey
| | - Arif Kıvrak
- Department of Chemistry Facuty of Arts and Sciences Osmangazi University 26040 Eskişehir Turkey
| | - Muheb A. S. Algso
- Department of Chemistry Faculty of Science Van Yuzuncu Yil University 65080 Van Turkey
| | - Şevki Arslan
- Department of Biology Faculty of Arts and Science Pamukkale University 20160 Denizli Turkey
| | - Doğukan Mutlu
- Department of Biology Faculty of Arts and Science Pamukkale University 20160 Denizli Turkey
| | - Çiğdem Otur
- Department of Agricultural Biotechnology Faculty of Agriculture Ondokuz Mayıs University 55270 Samsun Turkey
| | - Aslıhan Kurt Kızıldoğan
- Department of Agricultural Biotechnology Faculty of Agriculture Ondokuz Mayıs University 55270 Samsun Turkey
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5
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Li C, Nielsen SB, Engholm-Keller K, Lund MN. Oxidation of Whey Proteins during Thermal Treatment Characterized by a Site-Specific LC-MS/MS-Based Proteomic Approach. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:4391-4406. [PMID: 35380828 DOI: 10.1021/acs.jafc.1c07946] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Thermal treatment is often employed in food processing to tailor product properties by manipulating the ingredient functionality, but these elevated temperatures may accelerate oxidation and nutrient loss. Here, oxidation of different whey protein systems [α-lactalbumin (α-LA), β-lactoglobulin (β-LG), a mix of α-LA and β-LG (whey model), and a commercial whey protein isolate (WPI)] was investigated during heat treatment at 60-90 °C and a UHT-like treatment by LC-MS-based proteomic analysis. The relative modification levels of each oxidation site were calculated and compared among different heat treatments and sample systems. Oxidation increased significantly in protein systems after heating at ≥90 °C but decreased in systems with higher complexity [pure protein (α-LA > β-LG) > whey model > WPI]. In α-LA, Cys, Met, and Trp residues were found to be most prone to oxidation. In β-LG-containing protein systems, Cys residues were suggested to scavenge most of the reactive oxidants and undergo an oxidation-mediated disulfide rearrangement. The rearranged disulfide bonds contributed to protein aggregation, which was suggested to provide physical protection against oxidation. Overall, limited loss of amino acid residues was detected after acidic hydrolysis followed by UHPLC analysis, which showed only a minor effect of heat treatment on protein oxidation in these protein systems.
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Affiliation(s)
- Chengkang Li
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg, Denmark
| | - Søren B Nielsen
- Arla Foods Ingredients Group P/S, Sønderupvej 26, 6920 Videbæk, Denmark
| | - Kasper Engholm-Keller
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg, Denmark
| | - Marianne N Lund
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg, Denmark
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark
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6
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Mironov IV, Kharlamova VY. The Cu2+ and Zn2+ Heterobinuclear Complexes Based on Gold(I) Glutathionate Complexes in Aqueous Solution. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622020097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Li C, Engholm-Keller K, Lund MN. Site-Specific Characterization of Heat-Induced Disulfide Rearrangement in Beta-Lactoglobulin by Liquid Chromatography-Mass Spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:847-856. [PMID: 35025507 DOI: 10.1021/acs.jafc.1c06844] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Disulfides are important for maintaining the protein native structure, but they may undergo rearrangement in the presence of free Cys residues, especially under elevated temperatures. Disulfide rearrangement may result in protein aggregation, which is associated with in vivo pathologies in organisms and in vitro protein functionality in food systems. In a food context, it is therefore important to understand the process of disulfide rearrangement on a site-specific level in order to control aggregation. In the present study, a liquid chromatography-mass spectrometry (LC-MS)-based bottom-up site-specific proteomic approach was optimized to study disulfide rearrangements in beta-lactoglobulin (β-LG) under different heat treatments (60-90 °C). Artifactual disulfide rearrangement observed during sample preparation using a conventional protocol was detected and minimized by blocking the remaining free Cys residues with iodoacetamide in the presence of urea after heat treatment. Use of endoproteinase Glu-C for enzymatic hydrolysis allowed, for the first time, identification and comparison of the relative intensity of all theoretically possible β-LG disulfide cross-links formed by the heat treatments. Non-native disulfides were formed from heat treatment at approx. 70 °C where β-LG started to unfold, while higher levels of inter-molecular disulfide links were formed at ≥80 °C, in agreement with β-LG aggregation detected by size exclusion chromatography analysis. Collectively, the Cys residues of the surface-located native disulfide Cys66-Cys160 were proposed to be more reactive, participating in heat-induced disulfide rearrangement, compared to other Cys residues. The abundant signal of non-native disulfide bonds containing Cys66, especially Cys66-Cys66, observed after heating suggested that Cys66 is a key disulfide-linked Cys residue in β-LG participating in heat-induced inter-molecular disulfide bonds and the corresponding protein aggregation.
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Affiliation(s)
- Chengkang Li
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, Frederiksberg 1958, Denmark
| | - Kasper Engholm-Keller
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, Frederiksberg 1958, Denmark
| | - Marianne N Lund
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, Frederiksberg 1958, Denmark
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, Copenhagen N 2200, Denmark
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8
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Chen Q, Xie Y, Yu H, Guo Y, Cheng Y, Yao W. Application of Raman spectroscopy in a correlation study between protein oxidation/denaturation and conformational changes in beef after repeated freeze–thaw. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Qingmin Chen
- School of Food Science and Technology Jiangnan University No. 1800 Lihu Avenue Wuxi 214122 China
- College of Ocean Food and Biological Engineering Jimei University Xiamen 361021 China
| | - Yunfei Xie
- School of Food Science and Technology Jiangnan University No. 1800 Lihu Avenue Wuxi 214122 China
| | - Hang Yu
- School of Food Science and Technology Jiangnan University No. 1800 Lihu Avenue Wuxi 214122 China
| | - Yahui Guo
- School of Food Science and Technology Jiangnan University No. 1800 Lihu Avenue Wuxi 214122 China
| | - Yuliang Cheng
- School of Food Science and Technology Jiangnan University No. 1800 Lihu Avenue Wuxi 214122 China
| | - Weirong Yao
- School of Food Science and Technology Jiangnan University No. 1800 Lihu Avenue Wuxi 214122 China
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9
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Poojary MM, Lund MN. Chemical Stability of Proteins in Foods: Oxidation and the Maillard Reaction. Annu Rev Food Sci Technol 2021; 13:35-58. [PMID: 34941384 DOI: 10.1146/annurev-food-052720-104513] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Protein is a major nutrient present in foods along with carbohydrates and lipids. Food proteins undergo a wide range of modifications during food production, processing, and storage. In this review, we discuss two major reactions, oxidation and the Maillard reaction, involved in chemical modifications of food proteins. Protein oxidation in foods is initiated by metal-, enzyme-, or light-induced processes. Food protein oxidation results in the loss of thiol groups and the formation of protein carbonyls and specific oxidation products of cysteine, tyrosine, tryptophan, phenylalanine, and methionine residues, such as disulfides, dityrosine, kynurenine, m-tyrosine, and methionine sulfoxide. The Maillard reaction involves the reaction of nucleophilic amino acid residues with reducing sugars, which yields numerous heterogeneous compounds such as α-dicarbonyls, furans, Strecker aldehydes, advanced glycation end-products, and melanoidins. Both protein oxidation and the Maillard reaction result in the loss of essential amino acids but may positively or negatively impact food structure and flavor. Expected final online publication date for the Annual Review of Food Science and Technology, Volume 13 is March 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Mahesha M Poojary
- Department of Food Science, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark;
| | - Marianne N Lund
- Department of Food Science, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark; .,Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark;
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10
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Mironov IV, Kharlamova VY. On the redox interaction of HAuCl4 with thiomalate, as well as with cysteine and glutathione in aqueous solutions. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120500] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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Role of protein S-Glutathionylation in cancer progression and development of resistance to anti-cancer drugs. Arch Biochem Biophys 2021; 704:108890. [PMID: 33894196 DOI: 10.1016/j.abb.2021.108890] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 04/15/2021] [Accepted: 04/16/2021] [Indexed: 12/16/2022]
Abstract
The survival, functioning and proliferation of mammalian cells are highly dependent on the cellular response and adaptation to changes in their redox environment. Cancer cells often live in an altered redox environment due to aberrant neo-vasculature, metabolic reprogramming and dysregulated proliferation. Thus, redox adaptations are critical for their survival. Glutathione plays an essential role in maintaining redox homeostasis inside the cells by binding to redox-sensitive cysteine residues in proteins by a process called S-glutathionylation. S-Glutathionylation not only protects the labile cysteine residues from oxidation, but also serves as a sensor of redox status, and acts as a signal for stimulation of downstream processes and adaptive responses to ensure redox equilibrium. The present review aims to provide an updated overview of the role of the unique redox adaptations during carcinogenesis and cancer progression, focusing on their dependence on S-glutathionylation of specific redox-sensitive proteins involved in a wide range of processes including signalling, transcription, structural maintenance, mitochondrial functions, apoptosis and protein recycling. We also provide insights into the role of S-glutathionylation in the development of resistance to chemotherapy. Finally, we provide a strong rationale for the development of redox targeting drugs for treatment of refractory/resistant cancers.
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12
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Gabriel CER, Nguyen TT, Gargano EM, Fisher JF, Chang M, Mobashery S. Metabolism of the Selective Matrix Metalloproteinase-9 Inhibitor ( R)-ND-336. ACS Pharmacol Transl Sci 2021; 4:1204-1213. [PMID: 34151210 DOI: 10.1021/acsptsci.1c00063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Indexed: 01/02/2023]
Abstract
(R)-ND-336-designated as compound (R)-5-is a highly selective inhibitor of matrix metalloproteinase (MMP)-9 with efficacy in accelerating diabetic wound healing in murine models. (R)-ND-336 belongs to the class of thiirane inhibitors of MMPs and it is currently undergoing Investigation New Drug (IND)-enabling studies. We investigated the in vitro metabolism of (R)-ND-336 using S9 fractions obtained from mice, rats, dogs, minipigs, monkeys, and humans in order to select the rodent and nonrodent species for toxicology studies. Three metabolites were observed. One metabolite, M3, was observed across all species. Metabolite M2 was found in rats, monkeys, and humans. Metabolite M1 was observed only in rats. The identities of the metabolites were suggested by liquid chromatography/tandem mass spectroscopy (LC/MS-MS) analyses, which were authenticated by comparison to synthetic samples. Metabolites M2 and M3 arise from oxidative deamination of (R)-ND-336 by monoamine oxidase to give the arylaldehyde as a transient (and unobserved) intermediate. Reductive metabolism of this aldehyde gives the alcohol metabolite M2, while further oxidative metabolism of the aldehyde produces the carboxylate metabolite M3. A minor route of metabolism, seen only in rats, is N-acetylation of (R)-ND-336 to give the acetamide M1. The metabolism of (R)-ND-336 is distinctly different from that of the prototype member of this thiirane class ((±)-1, lacking the 4-aminomethyl aryl substituent) which is metabolized primarily by oxidation α to the sulfone to lead to a benzenesulfinate metabolite. All three metabolites are poorer MMP-9 inhibitors, compared to (R)-ND-336 (MMP-9, K i = 19 nM): M3, MMP-9 IC50 > 100 μM; M2, K i = 390 nM; and M1, IC50 > 100 μM). The rat and the minipig were selected as the rodent and nonrodent species, respectively, for toxicology studies.
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Affiliation(s)
- Charles Edwin Raja Gabriel
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Trung T Nguyen
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Emanuele Marco Gargano
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jed F Fisher
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Mayland Chang
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Shahriar Mobashery
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
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13
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Discovery of De Novo Macrocyclic Peptides by Messenger RNA Display. Trends Pharmacol Sci 2021; 42:385-397. [PMID: 33771353 DOI: 10.1016/j.tips.2021.02.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/23/2021] [Accepted: 02/26/2021] [Indexed: 12/12/2022]
Abstract
Macrocyclic peptides are a promising class of compounds that can often engage challenging therapeutic targets. Display technologies, such as mRNA display, allow for the efficient discovery of macrocyclic peptides. This article reviews the current approaches for generating macrocyclic peptide libraries using mRNA display and highlights some recent examples of ribosomal incorporation of nonproteinogenic amino acids into macrocyclic peptides.
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Effect of High Voltage Cold Plasma on Oxidation, Physiochemical, and Gelling Properties of Myofibrillar Protein Isolate from Asian Sea Bass ( Lates calcarifer). Foods 2021; 10:foods10020326. [PMID: 33557036 PMCID: PMC7913640 DOI: 10.3390/foods10020326] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/30/2021] [Accepted: 01/31/2021] [Indexed: 12/14/2022] Open
Abstract
The effects of in-bag dielectric barrier discharge high voltage cold plasma (IB-DBD-HVCP) on myofibrillar protein isolate (MPI) from Asian sea bass (ASB) and its impact on the physiochemical and gelling properties of MPI gels were elucidated. A mixture of argon (90%) and oxygen (10%) was used for generating IB-DBD-HVCP. MPI was subjected to IB-DBD-HVCP for varying times (5–15 min). Total carbonyl content was increased, while total sulfhydryl content was decreased in MPI, especially with augmenting treatment time (TT) (p < 0.05). Surface hydrophobicity initially increased when IB-DBD-HVCP TT of 5 min (DBD-HVCP5) was implemented, followed by subsequent decrease with increasing TT. Based on gel electrophoresis, lower actin and myosin heavy chain (MHC) band intensities were found for MPI subjected to IB-DBD-HVCP, particularly when a TT longer than 10 min was used, compared to those of the control. Gel made from DBD-HVCP5 had higher breaking force, deformation, and highest G′ value compared to others. A more ordered and fibrous network was found in DBD-HVCP5 treated gel. Therefore, IB-DBD-HVCP treatment, particularly for 5 min, enhanced cross-linking of proteins in ASB myofibrillar proteins, which resulted in the improved gel elasticity and strength.
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15
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Mao L, Huang CH, Shao B, Qin L, Tang M, Yan ZY, Liu ZS, Shao J, Sheng ZG, Zhu BZ. The critical role of superoxide anion radicals on delaying tetrachlorohydroquinone autooxidation by penicillamine. Free Radic Biol Med 2021; 163:369-378. [PMID: 33352220 DOI: 10.1016/j.freeradbiomed.2020.12.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/29/2020] [Accepted: 12/08/2020] [Indexed: 10/22/2022]
Abstract
We have recently found that penicillamine, a classic copper-chelating thiol-drug for Wilson's disease, can delay tetrachlorohydroquinone (TCHQ) autooxidation via a previously unrecognized redox-activity. However, its underlying molecular mechanism remains not fully understood. In this study, we found, interestingly and unexpectedly, that superoxide dismutase (SOD) can significantly shorten the delay of TCHQ autooxidation by penicillamine, but not by ascorbate; SOD can also markedly increase the yields of the oxidized form of penicillamine. Similar effects were observed with a recently-developed specific and sensitive superoxide anion radical (O2•-) probe CT-02H, which was also employed to successfully measure O2•- generated from both TCHQ and TCHQ/penicillamine systems for the first time. More importantly, addition of extra O2•- (KO2/18-crown-6) can further prolong the delaying effects by penicillamine and slow down penicillamine consumption. Taken together, an unexpected critical role of O2•- in TCHQ/penicillamine interaction was proposed: O2•- may regenerate penicillamine, thereby continuously reducing TCSQ•- to TCHQ and finally delaying TCHQ autooxidation; In contrast, if O2•- were eliminated, which can not only markedly change the reaction equilibrium, accelerate the rate of interaction, and ultimately shorten the delay of TCHQ autooxidation by penicillamine, but can also accelerate penicillamine oxidation to form its corresponding disulfide solely via redox reaction without any minor nucleophilic reaction. These findings not only further support our previously-proposed redox mechanism for the protection against TCHQ-induced cytotoxicity by penicillamine, but also reveal a new mode of action for O2•- in the inhibition of haloquinoids-induced toxicity by thiol antioxidants.
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Affiliation(s)
- Li Mao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Chun-Hua Huang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Bo Shao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Li Qin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Miao Tang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Zhu-Ying Yan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Zhi-Sheng Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Jie Shao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Zhi-Guo Sheng
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Ben-Zhan Zhu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China; Joint Institute for Environmental Science, Research Center for Eco-Environmental Sciences and Hong Kong Baptist University, Beijing, Hong Kong, PR China.
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16
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Nagy P, Dóka É, Ida T, Akaike T. Measuring Reactive Sulfur Species and Thiol Oxidation States: Challenges and Cautions in Relation to Alkylation-Based Protocols. Antioxid Redox Signal 2020; 33:1174-1189. [PMID: 32631072 DOI: 10.1089/ars.2020.8077] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Significance: Redox biology is gaining ground in research related to human physiology (metabolism, signaling), pathophysiology (cancer, cardiovascular disease, neurodegeneration), and toxicology (radiation- or xenobiotic-induced damage). A major hurdle in advancing redox medicine is the current lack of understanding the mechanisms underpinning the observed detrimental or beneficial in vivo effects. To gain deeper insights into the underlying molecular pathways of redox regulation, we need to appreciate the strengths and limitations of the currently available methods. Recent Advances: Reactive sulfur species (RSS), including cysteine derivatives of peptides and proteins along with small molecules such as hydrogen sulfide or inorganic polysulfides, are major players in redox biology. RSS-mediated regulation of protein functions is a widely studied mechanism in the field, and considerable efforts have been devoted to the development of selective detection methods. Critical Issues: A large number of available methods rely on an alkylation step to freeze the dynamism of consecutive oxidation and reduction events among RSS at a particular time point inside the cell. This process uses the assumption that alkylation blocks all redox events instantaneously. We argue that unfortunately this is often not the case, which could have serious impacts on detected sulfur species speciation and confound experimental results. Future Directions: Novel technologies and prudent optimization of existing methods to accurately characterize the dynamic redox status of the thiol proteome as well as detailed understanding of regulatory and signaling capacities of protein polysulfidation are crucial to open new routes toward therapeutic interventions.
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Affiliation(s)
- Péter Nagy
- Department of Molecular Immunology and Toxicology, National Institute of Oncology, Budapest, Hungary
| | - Éva Dóka
- Department of Molecular Immunology and Toxicology, National Institute of Oncology, Budapest, Hungary
| | - Tomoaki Ida
- Department of Environmental Medicine and Molecular Toxicology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takaaki Akaike
- Department of Environmental Medicine and Molecular Toxicology, Tohoku University Graduate School of Medicine, Sendai, Japan
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Fabrication of facile polymeric nanocomposites based on chitosan-gr-P2-aminothiophenol for biomedical applications. Int J Biol Macromol 2020; 165:2649-2659. [PMID: 32991898 DOI: 10.1016/j.ijbiomac.2020.09.140] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 09/03/2020] [Accepted: 09/19/2020] [Indexed: 01/04/2023]
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18
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Carroll L, Jiang S, Irnstorfer J, Beneyto S, Ignasiak MT, Rasmussen LM, Rogowska-Wrzesinska A, Davies MJ. Oxidant-induced glutathionylation at protein disulfide bonds. Free Radic Biol Med 2020; 160:513-525. [PMID: 32877736 DOI: 10.1016/j.freeradbiomed.2020.08.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/18/2020] [Accepted: 08/19/2020] [Indexed: 01/13/2023]
Abstract
Disulfide bonds are a key determinant of protein structure and function, and highly conserved across proteomes. They are particularly abundant in extracellular proteins, including those with critical structural, ligand binding or receptor function. We demonstrate that oxidation of protein disulfides induces polymerization, and results in oxygen incorporation into the former disulfide via thiosulfinate generation. These intermediates, which have half-lives of several hours in vitro, undergo secondary reactions that cleave the disulfide bond, by irreversible hydrolysis to sulfinic and sulfonic acids, or reaction with thiols in a process that yields thiolated proteins (e.g. glutathionylated species in the case of reaction with glutathione). The adducts have been characterized by mass spectrometry (as ions corresponding to the addition of 306 and 712 Da for addition of one and two glutathione molecules, respectively) and immunoblotting. These modifications can be induced by multiple biologically-important oxidants, including HOCl, ONOOH, and H2O2, and on multiple proteins, demonstrating that this is a common disulfide modification pathway. Addition of glutathione to give glutathionylated proteins, can be reversed by reducing systems (e.g. tris(2-carboxyethyl)phosphine), but this does not repair the original disulfide bond. Exposure of human plasma to these modifying agents increases protein glutathionylation, demonstrating potential in vivo relevance. Overall these data provide evidence for a novel and facile route to glutathionylated proteins involving initial oxidation of a disulfide to a thiosulfinate followed by rapid reaction with GSH ('oxidant-mediated thiol-disulfide exchange'). These data elucidate a novel pathway for protein glutathionylation that may have significant implications for redox biology and cell signaling.
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Affiliation(s)
- Luke Carroll
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Shuwen Jiang
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Johanna Irnstorfer
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Sergi Beneyto
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Marta T Ignasiak
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark; Faculty of Chemistry, Adam Mickiewicz University, and Wielkopolska Center for Advanced Technologies, Poznan, Poland
| | - Lars M Rasmussen
- Center for Individualized Medicine in Arterial Diseases (CIMA), Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, University of Southern Denmark, Odense, Denmark
| | - Adelina Rogowska-Wrzesinska
- Department of Biochemistry and Molecular Biology and VILLUM Center for Bioanalytical Sciences, University of Southern Denmark, Odense, Denmark
| | - Michael J Davies
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark.
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Bolumar T, Orlien V, Sikes A, Aganovic K, Bak KH, Guyon C, Stübler AS, de Lamballerie M, Hertel C, Brüggemann DA. High-pressure processing of meat: Molecular impacts and industrial applications. Compr Rev Food Sci Food Saf 2020; 20:332-368. [PMID: 33443800 DOI: 10.1111/1541-4337.12670] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 12/22/2022]
Abstract
High-pressure processing (HPP) has been the most adopted nonthermal processing technology in the food industry with a current ever-growing implementation, and meat products represent about a quarter of the HPP foods. The intensive research conducted in the last decades has described the molecular impacts of HPP on microorganisms and endogenous meat components such as structural proteins, enzyme activities, myoglobin and meat color chemistry, and lipids, resulting in the characterization of the mechanisms responsible for most of the texture, color, and oxidative changes observed when meat is submitted to HPP. These molecular mechanisms with major effect on the safety and quality of muscle foods are comprehensively reviewed. The understanding of the high pressure-induced molecular impacts has permitted a directed use of the HPP technology, and nowadays, HPP is applied as a cold pasteurization method to inactive vegetative spoilage and pathogenic microorganisms in ready-to-eat cold cuts and to extend shelf life, allowing the reduction of food waste and the gain of market boundaries in a globalized economy. Yet, other applications of HPP have been explored in detail, namely, its use for meat tenderization and for structure formation in the manufacturing of processed meats, though these two practices have scarcely been taken up by industry. This review condenses the most pertinent-related knowledge that can unlock the utilization of these two mainstream transformation processes of meat and facilitate the development of healthier clean label processed meats and a rapid method for achieving sous vide tenderness. Finally, scientific and technological challenges still to be overcome are discussed in order to leverage the development of innovative applications using HPP technology for the future meat industry.
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Affiliation(s)
- Tomas Bolumar
- Department of Safety and Quality of Meat, Meat Technology, Max Rubner Institute (MRI), Kulmbach, Germany
| | - Vibeke Orlien
- Faculty of Science, Department of Food Science, University of Copenhagen, Frederiksberg C, Denmark
| | - Anita Sikes
- Department of Agriculture and Food, Commonwealth for Scientific and Industrial Research Organization (CSIRO), Brisbane, Australia
| | - Kemal Aganovic
- Advanced Technologies, German Institute of Food Technologies (DIL), Quakenbrück, Germany
| | - Kathrine H Bak
- Department of Food Technology and Veterinary Public Health, Institute of Food Safety, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Claire Guyon
- Food Science and Engineering (ONIRIS), Nantes-Atlantic National College of Veterinary Medicine, Nantes, France
| | - Anna-Sophie Stübler
- Advanced Technologies, German Institute of Food Technologies (DIL), Quakenbrück, Germany
| | - Marie de Lamballerie
- Food Science and Engineering (ONIRIS), Nantes-Atlantic National College of Veterinary Medicine, Nantes, France
| | - Christian Hertel
- Advanced Technologies, German Institute of Food Technologies (DIL), Quakenbrück, Germany
| | - Dagmar A Brüggemann
- Department of Safety and Quality of Meat, Meat Technology, Max Rubner Institute (MRI), Kulmbach, Germany
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20
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Wang Y, Basdogan Y, Zhang T, Lankone RS, Wallace AN, Fairbrother DH, Keith JA, Gilbertson LM. Unveiling the Synergistic Role of Oxygen Functional Groups in the Graphene-Mediated Oxidation of Glutathione. ACS APPLIED MATERIALS & INTERFACES 2020; 12:45753-45762. [PMID: 32940454 DOI: 10.1021/acsami.0c11539] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This is the first report of an atomic-scale direct oxidation mechanism of the thiol group in glutathione (GSH) by epoxides on graphene oxide (GO) at room temperature. The proposed reaction mechanism is determined using a coupled experimental and computational approach; active sites for the reaction are determined through examination of GO surface chemistry changes before and after exposure to GSH, and density functional theory (DFT) calculations determine the reaction barriers for the possible GO-GSH reaction schemes. The findings build on the previously established catalytic mechanism of GSH oxidation by graphenic nanocarbon surfaces and importantly identify the direct reaction mechanism which becomes important in low-oxygen environments. Experimental results suggest epoxides as the active sites for the reaction with GSH, which we confirm using DFT calculations of reaction barriers and further identify a synergism between the adjacent epoxide and hydroxyl groups on the GO surface. The direct oxidation mechanism at specific oxygen sites offers insight into controlling GO chemical reactivity through surface chemistry manipulations. This insight is critical for furthering our understanding of GO oxidative stress pathways in cytotoxicity as well as for providing rational material design for GO applications that can leverage this reaction.
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Affiliation(s)
- Yan Wang
- Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Yasemin Basdogan
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Tianyu Zhang
- Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Ronald S Lankone
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Alexa N Wallace
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - D Howard Fairbrother
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - John A Keith
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Leanne M Gilbertson
- Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
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21
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Ye J, Fu S, Zhou S, Li M, Li K, Sun W, Zhai Y. Advances in hydrogels based on dynamic covalent bonding and prospects for its biomedical application. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.110024] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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22
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Ernst C, Kayastha K, Koch T, Venceslau SS, Pereira IAC, Demmer U, Ermler U, Dahl C. Structural and spectroscopic characterization of a HdrA-like subunit from Hyphomicrobium denitrificans. FEBS J 2020; 288:1664-1678. [PMID: 32750208 DOI: 10.1111/febs.15505] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 07/03/2020] [Accepted: 07/31/2020] [Indexed: 02/01/2023]
Abstract
Many bacteria and archaea employ a novel pathway of sulfur oxidation involving an enzyme complex that is related to the heterodisulfide reductase (Hdr or HdrABC) of methanogens. As a first step in the biochemical characterization of Hdr-like proteins from sulfur oxidizers (sHdr), we structurally analyzed the recombinant sHdrA protein from the Alphaproteobacterium Hyphomicrobium denitrificans at 1.4 Å resolution. The sHdrA core structure is similar to that of methanogenic HdrA (mHdrA) which binds the electron-bifurcating flavin adenine dinucleotide (FAD), the heart of the HdrABC-[NiFe]-hydrogenase catalyzed reaction. Each sHdrA homodimer carries two FADs and two [4Fe-4S] clusters being linked by electron conductivity. Redox titrations monitored by electron paramagnetic resonance and visible spectroscopy revealed a redox potential between -203 and -188 mV for the [4Fe-4S] center. The potentials for the FADH•/FADH- and FAD/FADH• pairs reside between -174 and -156 mV and between -81 and -19 mV, respectively. The resulting stable semiquinone FADH• species already detectable in the visible and electron paramagnetic resonance spectra of the as-isolated state of sHdrA is incompatible with basic principles of flavin-based electron bifurcation such that the sHdr complex does not apply this new mode of energy coupling. The inverted one-electron FAD redox potentials of sHdr and mHdr are clearly reflected in the different FAD-polypeptide interactions. According to this finding and the assumption that the sHdr complex forms an asymmetric HdrAA'B1C1B2C2 hexamer, we tentatively propose a mechanism that links protein-bound sulfane oxidation to sulfite on HdrB1 with NAD+ reduction via lipoamide disulfide reduction on HdrB2. The FAD of HdrA thereby serves as an electron storage unit. DATABASE: Structural data are available in PDB database under the accession number 6TJR.
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Affiliation(s)
- Corvin Ernst
- Institut für Mikrobiologie & Biotechnologie, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
| | | | - Tobias Koch
- Institut für Mikrobiologie & Biotechnologie, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
| | - Sofia S Venceslau
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Inês A C Pereira
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Ulrike Demmer
- Max-Planck-Institut für Biophysik, Frankfurt, Germany
| | - Ulrich Ermler
- Max-Planck-Institut für Biophysik, Frankfurt, Germany
| | - Christiane Dahl
- Institut für Mikrobiologie & Biotechnologie, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
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23
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Soliman BG, Lindberg GCJ, Jungst T, Hooper GJ, Groll J, Woodfield TBF, Lim KS. Stepwise Control of Crosslinking in a One-Pot System for Bioprinting of Low-Density Bioinks. Adv Healthc Mater 2020; 9:e1901544. [PMID: 32323473 DOI: 10.1002/adhm.201901544] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 03/07/2020] [Accepted: 03/09/2020] [Indexed: 12/19/2022]
Abstract
Extrusion-based 3D bioprinting is hampered by the inability to print materials of low-viscosity. In this study, a single initiating system based on ruthenium (Ru) and sodium persulfate (SPS) is utilized for a sequential dual-step crosslinking approach: 1) primary (partial) crosslinking in absence of light to alter the bioink's rheological profile for print fidelity, and 2) subsequent secondary post-printing crosslinking for shape maintenance. Allyl-functionalized gelatin (Gel-AGE) is used as a bioink, allowing thiol-ene click reaction between allyl moieties and thiolated crosslinkers. A systematic investigation of primary crosslinking reveals that a thiol-persulfate redox reaction facilitates thiol-ene crosslinking, mediating an increase in bioink viscosity that is controllable by tailoring the Ru/SPS, crosslinker, and/or Gel-AGE concentrations. Thereafter, subsequent photoinitiated secondary crosslinking then facilitates maximum conversion of thiol-ene bonds between AGE and thiol groups. The dual-step crosslinking method is applicable to a wide biofabrication window (3-10 wt% Gel-AGE) and is demonstrated to allow printing of low-density (3 wt%) Gel-AGE, normally exhibiting low viscosity (4 mPa s), with high shape fidelity and high cell viability (>80%) over 7 days of culture. The presented approach can therefore be used as a one-pot system for printing low-viscous bioinks without the need for multiple initiating systems, viscosity enhancers, or complex chemical modifications.
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Affiliation(s)
- Bram G. Soliman
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) GroupUniversity of Otago 2 Riccarton Avenue Christchurch 8011 New Zealand
| | - Gabriella C. J. Lindberg
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) GroupUniversity of Otago 2 Riccarton Avenue Christchurch 8011 New Zealand
- Medical Technologies Centre of Research Excellence Auckland 1010 New Zealand
| | - Tomasz Jungst
- Department for Functional Materials in Medicine and Dentistry (FMZ) and Bavarian Polymer Institute (BPI)University of Würzburg Pleicherwall 2 Würzburg 97070 Germany
| | - Gary J. Hooper
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) GroupUniversity of Otago 2 Riccarton Avenue Christchurch 8011 New Zealand
| | - Jürgen Groll
- Department for Functional Materials in Medicine and Dentistry (FMZ) and Bavarian Polymer Institute (BPI)University of Würzburg Pleicherwall 2 Würzburg 97070 Germany
| | - Tim B. F. Woodfield
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) GroupUniversity of Otago 2 Riccarton Avenue Christchurch 8011 New Zealand
- Medical Technologies Centre of Research Excellence Auckland 1010 New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery Auckland 1010 New Zealand
| | - Khoon S. Lim
- Christchurch Regenerative Medicine and Tissue Engineering (CReaTE) GroupUniversity of Otago 2 Riccarton Avenue Christchurch 8011 New Zealand
- Medical Technologies Centre of Research Excellence Auckland 1010 New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery Auckland 1010 New Zealand
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24
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Zhao Z, Poojary MM, Skibsted LH, Lund MN. Cleavage of Disulfide Bonds in Cystine by UV-B Illumination Mediated by Tryptophan or Tyrosine as Photosensitizers. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:6900-6909. [PMID: 32437144 DOI: 10.1021/acs.jafc.0c01760] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Photolytic cleavage of disulfide bonds in proteins by UV light will influence their structure and functionality. The present study aimed to investigate the efficiency of disulfide cleavage by UV-B light in a system without a protein backbone consisting of combinations of cystine (a disulfide) and tryptophan (Trp) or tyrosine (Tyr) under anaerobic and aerobic conditions and to identify oxidation products formed by UV-B light. Cystine was reduced to cysteine (Cys) almost with a 1:1 stoichiometry by photoexcited Trp for anaerobic equimolar aqueous solutions (each 200 μM; pH 7.0), while photoexcited Tyr provided lower concentrations of Cys. The calculation of apparent quantum yields allowed for a comparison between the efficiency of reactions and showed that formation of Cys from disulfide cleavage of cystine was more efficient by photoexcited Trp than by photoexcited Tyr and of cystine alone and that Trp was more sensitive to photodegradation than Tyr and cystine under both aerobic and anaerobic conditions. Increasing the ratio between cystine and Trp to a 1:2 ratio did not increase the efficiency of free thiol formation but caused a more efficient photodegradation of Trp. The free thiol formed from disulfide cleavage of cystine was further oxidized to other unidentified compounds. Trp oxidation products (3-hydroxykynurenine (3-OH-Kyn) and tryptamine) were only identified in minor concentrations following light exposure of cystine and Trp in 1:1 and 1:2 ratios under both aerobic and anaerobic conditions, indicating further photodegradation to unidentified compounds. 3,4-Dihydroxyphenylalanine (DOPA) was formed from the oxidation of Tyr in the illuminated samples of cystine and Tyr in a 1:1 ratio under both aerobic and anaerobic conditions.
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Affiliation(s)
- Zichen Zhao
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg, Denmark
| | - Mahesha M Poojary
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg, Denmark
| | - Leif H Skibsted
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg, Denmark
| | - Marianne N Lund
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg, Denmark
- Department of Biomedical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark
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25
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Zhao Z, Engholm-Keller K, Poojary MM, Boelt SG, Rogowska-Wrzesinska A, Skibsted LH, Davies MJ, Lund MN. Generation of Aggregates of α-Lactalbumin by UV-B Light Exposure. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:6701-6714. [PMID: 32396720 DOI: 10.1021/acs.jafc.0c00757] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Whey proteins are widely used as ingredients in the form of aggregates to obtain certain functionalities in food applications. The aim of this study was to understand how UV illumination generates aggregates of α-lactalbumin (α-LA) as an alternative to heat treatments traditionally used for industrial production of protein aggregates. Absorption of UV light by α-LA caused cleavage of disulfide bonds and release of thiol groups, which resulted in primarily disulfide-mediated aggregation. This process mediated efficient aggregation with up to 98% monomer conversion into aggregates through formation of intermolecular disulfide bonds, while only minor levels of nonreducible cross-links were observed. SDS-PAGE analysis revealed that illumination led to formation of dimeric, trimeric, and oligomeric forms of α-LA. LC-MS/MS analysis showed that all of the four native disulfide bonds in α-LA were cleaved by UV illumination but to different extents, and the extent of cleavage was found to be higher in the absence of calcium. Seventeen different non-native disulfides were formed after 24 h of UV illumination. Two dityrosine bonds were identified (Tyr103-Tyr103 and Tyr36-Tyr103) alongside ditryptophan (Trp118-Trp118) and tyrosine-tryptophan (Tyr50-Trp60) cross-links. In addition, Trp60, Trp118, Cys73, Cys91, Cys120, Phe80, Met90, His68, and His107 were found to be oxidized up to 12% as compared to a nonilluminated control. Our work illustrates that light exposure can be used for generation of α-LA aggregates, but optimization of the illumination conditions is required to reduce oxidative damage to Trp, Cys, Phe, Met, and His residues.
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Affiliation(s)
- Zichen Zhao
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
| | - Kasper Engholm-Keller
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
| | - Mahesha M Poojary
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
| | - Sanne G Boelt
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark
| | | | - Leif H Skibsted
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
| | - Michael J Davies
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark
| | - Marianne N Lund
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark
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26
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Xu H, Zhang YF, Lang X. TEMPO visible light photocatalysis: The selective aerobic oxidation of thiols to disulfides. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.10.024] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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27
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Zaorska E, Tomasova L, Koszelewski D, Ostaszewski R, Ufnal M. Hydrogen Sulfide in Pharmacotherapy, Beyond the Hydrogen Sulfide-Donors. Biomolecules 2020; 10:biom10020323. [PMID: 32085474 PMCID: PMC7072623 DOI: 10.3390/biom10020323] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/12/2020] [Accepted: 02/14/2020] [Indexed: 12/21/2022] Open
Abstract
Hydrogen sulfide (H2S) is one of the important biological mediators involved in physiological and pathological processes in mammals. Recently developed H2S donors show promising effects against several pathological processes in preclinical and early clinical studies. For example, H2S donors have been found to be effective in the prevention of gastrointestinal ulcers during anti-inflammatory treatment. Notably, there are well-established medicines used for the treatment of a variety of diseases, whose chemical structure contains sulfur moieties and may release H2S. Hence, the therapeutic effect of these drugs may be partly the result of the release of H2S occurring during drug metabolism and/or the effect of these drugs on the production of endogenous hydrogen sulfide. In this work, we review data regarding sulfur drugs commonly used in clinical practice that can support the hypothesis about H2S-dependent pharmacotherapeutic effects of these drugs.
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Affiliation(s)
- Ewelina Zaorska
- Department of Experimental Physiology and Pathophysiology, Laboratory of Centre for Preclinical Research, Medical University of Warsaw, 02-091 Warsaw, Poland;
| | - Lenka Tomasova
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, 84505 Bratislava, Slovakia;
| | - Dominik Koszelewski
- Institute of Organic Chemistry, Polish Academy of Sciences Kasprzaka 44/52, 01-224 Warsaw, Poland; (D.K.); (R.O.)
| | - Ryszard Ostaszewski
- Institute of Organic Chemistry, Polish Academy of Sciences Kasprzaka 44/52, 01-224 Warsaw, Poland; (D.K.); (R.O.)
| | - Marcin Ufnal
- Department of Experimental Physiology and Pathophysiology, Laboratory of Centre for Preclinical Research, Medical University of Warsaw, 02-091 Warsaw, Poland;
- Correspondence: ; Tel.: +48-22-116-6195
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Abstract
Metal-based drugs and imaging agents are extensively used in the clinic for the treatment and diagnosis of cancers and a wide range of other diseases. The current clinical arsenal of compounds operate via a limited number of mechanisms, whereas new putative compounds explore alternative mechanisms of action, which could potentially bring new chemotherapeutic approaches into the clinic. In this review, metal-based drugs and imaging agents are characterized according to their primary mode of action and the key properties and features of each class of compounds are defined, wherever possible. A better understanding of the roles played by metal compounds at a mechanistic level will help to deliver new metal-based therapies to the clinic, by providing an alternative, targeted and rational approach, to supplement non-targeted screening of novel chemical entities for biological activity.
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Affiliation(s)
- Eszter Boros
- Department of Chemistry, Stony Brook University, 100 Nicolls road, Stony Brook, New York, NY 11790, USA
| | - Paul J Dyson
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Gilles Gasser
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, F-75005 Paris, France
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29
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Zhang W, Poojary MM, Rauh V, Ray CA, Olsen K, Lund MN. Quantitation of α-Dicarbonyls and Advanced Glycation Endproducts in Conventional and Lactose-Hydrolyzed Ultrahigh Temperature Milk during 1 Year of Storage. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:12863-12874. [PMID: 31670949 DOI: 10.1021/acs.jafc.9b05037] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A comprehensive quantitative characterization of Maillard reaction products was carried out for conventional (CON) and lactose-hydrolyzed (LH) ultrahigh temperature (UHT) milk during storage at 20, 30, and 40 °C for 1 year. The accumulation of 3-deoxyglucosone (3-DG) and 3-deoxygalactosone (3-DGal) in LH-UHT milk ranged from 20-fold (at 20 °C) to 44-fold (at 40 °C) higher than that in CON-UHT milk. High temperature storage (40 °C) significantly accelerated the accumulation of 3-DG, 3-DGal, and 5-hydroxymethyl furfural but not the majority of the analyzed advanced glycation endproducts (AGEs). The concentrations of major AGEs including N-ε-carboxymethyllysine (CML), N-ε-carboxyethyllysine (CEL), methylglyoxal-hydroimidazolone isomers (MG-H1/H3), glyoxal-hydroimidazolone isomers (G-H1/H3), and G-H2 detected in CON milk during storage were in the range 12-700, 1-14, 8-45, 4-13, and 1-30 μM, respectively, while they were 30-570, 2-88, 17-150, 9-20, and 5-34 μM, respectively, in LH milk. Pyrraline, S-(carboxymethyl)cysteine (CMC), and glyoxal-lysine dimer were detected in lower levels, while MG-H2, methylglyoxal-lysine dimer, argpyrimidine, glyoxal-lysine-amide, glycolic acid-lysine-amide, and pentosidine were not detected in any of the milk samples. This work demonstrates for the first time that five of the analyzed AGEs (CML, CEL, MG-H1/H3, G-H1/H3, and G-H2) could be selected as markers for evaluation of the extent of the Maillard reaction in UHT milk. These results contribute to a better understanding of how Maillard reactions progress during storage of UHT milk and can be used to develop strategies to inhibit Maillard reactions in LH milk.
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Affiliation(s)
- Wei Zhang
- Department of Food Science, Faculty of Science , University of Copenhagen , Rolighedsvej 26 , 1958 Frederiksberg C , Denmark
| | - Mahesha M Poojary
- Department of Food Science, Faculty of Science , University of Copenhagen , Rolighedsvej 26 , 1958 Frederiksberg C , Denmark
| | - Valentin Rauh
- Arla Foods Amba , Agro Food Park 19 , 8200 Aarhus N , Denmark
| | - Colin A Ray
- Department of Food Science, Faculty of Science , University of Copenhagen , Rolighedsvej 26 , 1958 Frederiksberg C , Denmark
| | - Karsten Olsen
- Department of Food Science, Faculty of Science , University of Copenhagen , Rolighedsvej 26 , 1958 Frederiksberg C , Denmark
| | - Marianne N Lund
- Department of Food Science, Faculty of Science , University of Copenhagen , Rolighedsvej 26 , 1958 Frederiksberg C , Denmark
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences , University of Copenhagen , Blegdamsvej 3 , 2200 Copenhagen N , Denmark
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30
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Ito S, Fujiki Y, Matsui N, Ojika M, Wakamatsu K. Tyrosinase‐catalyzed oxidation of resveratrol produces a highly reactive
ortho
‐quinone: Implications for melanocyte toxicity. Pigment Cell Melanoma Res 2019; 32:766-776. [DOI: 10.1111/pcmr.12808] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 05/28/2019] [Accepted: 06/26/2019] [Indexed: 01/14/2023]
Affiliation(s)
- Shosuke Ito
- Department of Chemistry Fujita Health University School of Medical Sciences Toyoake Aichi Japan
| | - Yui Fujiki
- Department of Chemistry Fujita Health University School of Medical Sciences Toyoake Aichi Japan
| | - Nina Matsui
- Department of Chemistry Fujita Health University School of Medical Sciences Toyoake Aichi Japan
| | - Makoto Ojika
- Department of Applied Biosciences, Graduate School of Bioagricultural Sciences Nagoya University Nagoya Aichi Japan
| | - Kazumasa Wakamatsu
- Department of Chemistry Fujita Health University School of Medical Sciences Toyoake Aichi Japan
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31
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Zainudin MAM, Poojary MM, Jongberg S, Lund MN. Light exposure accelerates oxidative protein polymerization in beef stored in high oxygen atmosphere. Food Chem 2019; 299:125132. [PMID: 31299519 DOI: 10.1016/j.foodchem.2019.125132] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/25/2019] [Accepted: 07/03/2019] [Indexed: 12/25/2022]
Abstract
Protein oxidation of beef patties stored in high oxygen modified atmosphere packaging for 9 days was investigated. Meat was either stored in the dark, under light, or in the dark with addition of FeCl2/H2O2/myoglobin (forced oxidation). SDS-PAGE analysis showed high degree of protein polymerization for meat exposed to light, compared to the other samples. Light exposure induced reducible (disulfide) and non-reducible cross-links, while mainly disulfides were formed in meat stored in the dark. Light exposure was responsible for 58% loss of free thiols (Cys residues). No significant loss of other amino acid residues was observed and none of the most common oxidation products of tryptophan, tyrosine, and phenylalanine were detected. Intrinsic fluorescence measurements of tryptophan showed 27% loss in samples exposed to light, which was ascribed to loss of protein solubility via protein polymerization rather than tryptophan oxidation. Protein carbonyls were mainly detected in forced oxidized samples at Day 0.
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Affiliation(s)
- Mohd Asraf Mohd Zainudin
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark; Faculty of Engineering Technology, Universiti Malaysia Perlis, 02100 Perlis Indera Kayangan, Malaysia
| | - Mahesha M Poojary
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
| | - Sisse Jongberg
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
| | - Marianne N Lund
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark; Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, Copenhagen N 2200 Denmark.
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32
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Agouridas V, El Mahdi O, Diemer V, Cargoët M, Monbaliu JCM, Melnyk O. Native Chemical Ligation and Extended Methods: Mechanisms, Catalysis, Scope, and Limitations. Chem Rev 2019; 119:7328-7443. [DOI: 10.1021/acs.chemrev.8b00712] [Citation(s) in RCA: 243] [Impact Index Per Article: 48.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Vangelis Agouridas
- UMR CNRS 8204, Centre d’Immunité et d’Infection de Lille, University of Lille, CNRS, Institut Pasteur de Lille, F-59000 Lille, France
| | - Ouafâa El Mahdi
- Faculté Polydisciplinaire de Taza, University Sidi Mohamed Ben Abdellah, BP 1223 Taza Gare, Morocco
| | - Vincent Diemer
- UMR CNRS 8204, Centre d’Immunité et d’Infection de Lille, University of Lille, CNRS, Institut Pasteur de Lille, F-59000 Lille, France
| | - Marine Cargoët
- UMR CNRS 8204, Centre d’Immunité et d’Infection de Lille, University of Lille, CNRS, Institut Pasteur de Lille, F-59000 Lille, France
| | - Jean-Christophe M. Monbaliu
- Center for Integrated Technology and Organic Synthesis, Department of Chemistry, University of Liège, Building B6a, Room 3/16a, Sart-Tilman, B-4000 Liège, Belgium
| | - Oleg Melnyk
- UMR CNRS 8204, Centre d’Immunité et d’Infection de Lille, University of Lille, CNRS, Institut Pasteur de Lille, F-59000 Lille, France
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33
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Petkowski JJ, Bains W, Seager S. An Apparent Binary Choice in Biochemistry: Mutual Reactivity Implies Life Chooses Thiols or Nitrogen-Sulfur Bonds, but Not Both. ASTROBIOLOGY 2019; 19:579-613. [PMID: 30431334 DOI: 10.1089/ast.2018.1831] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A fundamental goal of biology is to understand the rules behind life's use of chemical space. Established work focuses on why life uses the chemistry that it does. Given the enormous scope of possible chemical space, we postulate that it is equally important to ask why life largely avoids certain areas of chemical space. The nitrogen-sulfur bond is a prime example, as it rarely appears in natural molecules, despite the very rich N-S bond chemistry applied in various branches of industry (e.g., industrial materials, agrochemicals, pharmaceuticals). We find that, out of more than 200,000 known, unique compounds made by life, only about 100 contain N-S bonds. Furthermore, the limited number of N-S bond-containing molecules that life produces appears to fall into a few very distinctive structural groups. One may think that industrial processes are unrelated to biochemistry because of a greater possibility of solvents, catalysts, and temperatures available to industry than to the cellular environment. However, the fact that life does rarely make N-S bonds, from the plentiful precursors available, and has evolved the ability to do so independently several times, suggests that the restriction on life's use of N-S chemistry is not in its synthesis. We present a hypothesis to explain life's extremely limited usage of the N-S bond: that the N-S bond chemistry is incompatible with essential segments of biochemistry, specifically with thiols. We support our hypothesis by (1) a quantitative analysis of the occurrence of N-S bond-containing natural products and (2) reactivity experiments between selected N-S compounds and key biological molecules. This work provides an example of a reason why life nearly excludes a distinct region of chemical space. Combined with future examples, this potentially new field of research may provide fresh insight into life's evolution through chemical space and its origin and early evolution.
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Affiliation(s)
- Janusz J Petkowski
- 1 Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology , Cambridge, Massachusetts, USA
| | | | - Sara Seager
- 1 Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology , Cambridge, Massachusetts, USA
- 3 Department of Physics, Massachusetts Institute of Technology , Cambridge, Massachusetts, USA
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Effect of in-package high voltage dielectric barrier discharge on microbiological, color and oxidation properties of pork in modified atmosphere packaging during storage. Meat Sci 2019; 149:107-113. [DOI: 10.1016/j.meatsci.2018.11.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 11/03/2018] [Accepted: 11/21/2018] [Indexed: 11/19/2022]
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35
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Wang J. Crystallographic identification of spontaneous oxidation intermediates and products of protein sulfhydryl groups. Protein Sci 2019; 28:472-477. [PMID: 30592103 PMCID: PMC6371210 DOI: 10.1002/pro.3568] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 12/23/2018] [Accepted: 12/26/2018] [Indexed: 11/12/2022]
Abstract
In the absence of protective reducing agents, Cys residues in purified proteins can be oxidized spontaneously by oxygen in the air, as frequently observed in protein crystal structures. However, the formation of an O-bridge via dehydration mechanism between a peroxidized Cys side chain and a primary amine of Lys side chain in proteins has not yet been reported. When an electron density feature was observed for an extra group or an extra atom between side chains of Cys-245 and Lys-158 in the crystal structure of histidinol phosphate phosphatase, mass spectrometric analysis was carried out for its chemical identification. That analysis led to a conclusion that this extra density corresponded to a methylene group. It was then proposed that these two residues were able to absorb CO2 and reduced it to CH2 spontaneously. Further examination of other protein structures in the PDB showed that the formation of this cross-linking species was a widespread phenomenon. This claim is examined in this study using methods recently developed for quantification of electrons around nucleus as the means for direct chemical identification. It is found that an O-bridge is actually formed between Cys and Lys side chains, instead of a CH2 -bridge.
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Affiliation(s)
- Jimin Wang
- Department of Molecular Biophysics and BiochemistryYale UniversityNew HavenConnecticut06520
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36
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Bogdándi V, Ida T, Sutton TR, Bianco C, Ditrói T, Koster G, Henthorn HA, Minnion M, Toscano JP, van der Vliet A, Pluth MD, Feelisch M, Fukuto JM, Akaike T, Nagy P. Speciation of reactive sulfur species and their reactions with alkylating agents: do we have any clue about what is present inside the cell? Br J Pharmacol 2019; 176:646-670. [PMID: 29909607 PMCID: PMC6346080 DOI: 10.1111/bph.14394] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 05/18/2018] [Accepted: 06/05/2018] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND AND PURPOSE: Posttranslational modifications of cysteine residues represent a major aspect of redox biology, and their reliable detection is key in providing mechanistic insights. The metastable character of these modifications and cell lysis-induced artifactual oxidation render current state-of-the-art protocols to rely on alkylation-based stabilization of labile cysteine derivatives before cell/tissue rupture. An untested assumption in these procedures is that for all cysteine derivatives, alkylation rates are faster than their dynamic interchange. However, when the interconversion of cysteine derivatives is not rate limiting, electrophilic labelling is under Curtin-Hammett control; hence, the final alkylated mixture may not represent the speciation that prevailed before alkylation. EXPERIMENTAL APPROACH Buffered aqueous solutions of inorganic, organic, cysteine, GSH and GAPDH polysulfide species were used. Additional experiments in human plasma and serum revealed that monobromobimane can extract sulfide from the endogenous sulfur pool by shifting speciation equilibria, suggesting caution should be exercised when interpreting experimental results using this tool. KEY RESULTS In the majority of cases, the speciation of alkylated polysulfide/thiol derivatives depended on the experimental conditions. Alkylation perturbed sulfur speciation in both a concentration- and time-dependent manner and strong alkylating agents cleaved polysulfur chains. Moreover, the labelling of sulfenic acids with dimedone also affected cysteine speciation, suggesting that part of the endogenous pool of products previously believed to represent sulfenic acid species may represent polysulfides. CONCLUSIONS AND IMPLICATIONS We highlight methodological caveats potentially arising from these pitfalls and conclude that current derivatization strategies often fail to adequately capture physiological speciation of sulfur species. LINKED ARTICLES This article is part of a themed section on Chemical Biology of Reactive Sulfur Species. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v176.4/issuetoc.
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Affiliation(s)
- Virág Bogdándi
- Department of Molecular Immunology and ToxicologyNational Institute of OncologyBudapestHungary
| | - Tomoaki Ida
- Department of Environmental Medicine and Molecular ToxicologyTohoku University Graduate School of MedicineSendaiJapan
| | - Thomas R Sutton
- Clinical and Experimental Sciences, Faculty of MedicineUniversity Hospital Southampton NHS Foundation Trust, University of SouthamptonSouthamptonUK
| | | | - Tamás Ditrói
- Department of Molecular Immunology and ToxicologyNational Institute of OncologyBudapestHungary
| | - Grielof Koster
- Clinical and Experimental Sciences, Faculty of MedicineUniversity Hospital Southampton NHS Foundation Trust, University of SouthamptonSouthamptonUK
| | - Hillary A Henthorn
- Department of Chemistry and Biochemistry, Materials Science Institute, Institute of Molecular BiologyUniversity of OregonEugeneORUSA
| | - Magda Minnion
- Clinical and Experimental Sciences, Faculty of MedicineUniversity Hospital Southampton NHS Foundation Trust, University of SouthamptonSouthamptonUK
| | - John P Toscano
- Department of ChemistryJohns Hopkins UniversityBaltimoreMDUSA
| | - Albert van der Vliet
- Department of Pathology and Laboratory Medicine, Robert Larner, M.D. College of MedicineUniversity of VermontBurlingtonVTUSA
| | - Michael D Pluth
- Department of Chemistry and Biochemistry, Materials Science Institute, Institute of Molecular BiologyUniversity of OregonEugeneORUSA
| | - Martin Feelisch
- Clinical and Experimental Sciences, Faculty of MedicineUniversity Hospital Southampton NHS Foundation Trust, University of SouthamptonSouthamptonUK
| | - Jon M Fukuto
- Department of ChemistrySonoma State UniversityRohnert ParkCAUSA
| | - Takaaki Akaike
- Department of Environmental Medicine and Molecular ToxicologyTohoku University Graduate School of MedicineSendaiJapan
| | - Péter Nagy
- Department of Molecular Immunology and ToxicologyNational Institute of OncologyBudapestHungary
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37
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Miller CG, Holmgren A, Arnér ESJ, Schmidt EE. NADPH-dependent and -independent disulfide reductase systems. Free Radic Biol Med 2018; 127:248-261. [PMID: 29609022 PMCID: PMC6165701 DOI: 10.1016/j.freeradbiomed.2018.03.051] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 03/26/2018] [Accepted: 03/29/2018] [Indexed: 12/20/2022]
Abstract
Over the past seven decades, research on autotrophic and heterotrophic model organisms has defined how the flow of electrons ("reducing power") from high-energy inorganic sources, through biological systems, to low-energy inorganic products like water, powers all of Life's processes. Universally, an initial major biological recipient of these electrons is nicotinamide adenine dinucleotide-phosphate, which thereby transits from an oxidized state (NADP+) to a reduced state (NADPH). A portion of this reducing power is then distributed via the cellular NADPH-dependent disulfide reductase systems as sequential reductions of disulfide bonds. Along the disulfide reduction pathways, some enzymes have active sites that use the selenium-containing amino acid, selenocysteine, in place of the common but less reactive sulfur-containing cysteine. In particular, the mammalian/metazoan thioredoxin systems are usually selenium-dependent as, across metazoan phyla, most thioredoxin reductases are selenoproteins. Among the roles of the NADPH-dependent disulfide reductase systems, the most universal is that they provide the reducing power for the production of DNA precursors by ribonucleotide reductase (RNR). Some studies, however, have uncovered examples of NADPH-independent disulfide reductase systems that can also support RNR. These systems are summarized here and their implications are discussed.
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Affiliation(s)
- Colin G Miller
- Department of Chemistry & Biochemistry, Montana State University, Bozeman, MT 59717, USA; Department of Microbiology & Immunology, Montana State University, Bozeman, MT 59717, USA
| | - Arne Holmgren
- Division of Biochemistry, Department of Medical Biochemistry & Biophysics, Karolinska Institutet, SE 171 77 Stockholm, Sweden
| | - Elias S J Arnér
- Division of Biochemistry, Department of Medical Biochemistry & Biophysics, Karolinska Institutet, SE 171 77 Stockholm, Sweden
| | - Edward E Schmidt
- Department of Microbiology & Immunology, Montana State University, Bozeman, MT 59717, USA.
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38
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Bilal M, Rasheed T, Zhao Y, Iqbal HMN, Cui J. "Smart" chemistry and its application in peroxidase immobilization using different support materials. Int J Biol Macromol 2018; 119:278-290. [PMID: 30041033 DOI: 10.1016/j.ijbiomac.2018.07.134] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 07/18/2018] [Accepted: 07/20/2018] [Indexed: 02/08/2023]
Abstract
In the past few decades, the enzyme immobilization technology has been exploited a lot and thus became a matter of rational design. Immobilization is an alternative approach to bio-catalysis with the added benefits, adaptability to automation and high-throughput applications. Immobilization-based approaches represent simple but effective routes for engineering enzyme catalysts with higher activities than wild-type or pristine counterparts. From the chemistry viewpoint, the concept of stabilization via manipulation of functional entities, the enzyme surfaces have been an important driving force for immobilizing purposes. In addition, the unique physiochemical and structural functionalities of pristine or engineered cues, or insoluble support matrices (carrier) such as mean particle diameter, swelling behavior, mechanical strength, and compression behavior are of supreme interest and importance for the performance of the immobilized systems. Immobilization of peroxidases into/onto insoluble support matrices is advantageous for practical applications due to convenience in handling, ease separation of enzymes from a reaction mixture and the reusability. A plethora of literature is available explaining individual immobilization system. However, current literature lacks the chemistry viewpoint of immobilization. This review work presents state-of-the-art "Smart" chemistry of immobilization and novel potentialities of several materials-based cues with different geometries including microspheres, hydrogels and polymeric membranes, nanoparticles, nanofibers, composite and hybrid or blended support materials. The involvement of various functional groups including amino, thiol, carboxylic, hydroxyl, and epoxy groups via "click" chemistry, amine chemistry, thiol chemistry, carboxyl chemistry, and epoxy chemistry over the protein surfaces is discussed.
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Affiliation(s)
- Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
| | - Tahir Rasheed
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yuping Zhao
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N.L. CP 64849, Mexico.
| | - Jiandong Cui
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, No 29, 13th, Avenue, Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457, China.
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Bertoldo JB, Terenzi H, Hüttelmaier S, Bernardes GJL. Posttranslational Chemical Mutagenesis: To Reveal the Role of Noncatalytic Cysteine Residues in Pathogenic Bacterial Phosphatases. Biochemistry 2018; 57:6144-6152. [DOI: 10.1021/acs.biochem.8b00639] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jean B. Bertoldo
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
- Institut für Molekulare Medizin, Medizinische Fakultät, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Stra 3a, 06108 Halle, Germany
| | - Hernán Terenzi
- Centro de Biologia Molecular Estrutural, Departamento de Bioquímica, Universidade Federal de Santa Catarina, 88040-970 Florianópolis, SC, Brazil
| | - Stefan Hüttelmaier
- Institut für Molekulare Medizin, Medizinische Fakultät, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Stra 3a, 06108 Halle, Germany
| | - Gonçalo J. L. Bernardes
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
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40
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Dereven’kov IA, Tsaba LV, Pokrovskaya EA, Makarov SV. Studies on the interaction of aquacobalamin with cysteinesulfinic and cysteic acids, hypotaurine and taurine. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1515927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Ilia A. Dereven’kov
- Department of Food Chemistry, Ivanovo State University of Chemistry and Technology, Ivanovo, Russian Federation
| | - Lubov V. Tsaba
- Department of Food Chemistry, Ivanovo State University of Chemistry and Technology, Ivanovo, Russian Federation
| | - Elizaveta A. Pokrovskaya
- Department of Food Chemistry, Ivanovo State University of Chemistry and Technology, Ivanovo, Russian Federation
| | - Sergei V. Makarov
- Department of Food Chemistry, Ivanovo State University of Chemistry and Technology, Ivanovo, Russian Federation
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41
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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
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Abstract
Hydrogen peroxide (H2O2) is generated in numerous biological processes. It transmits cellular signals, contributes to oxidative folding of exported proteins, and, in excess, can be damaging to cells and tissues. Although a strong oxidant, high activation energy barriers make it unreactive with most biological molecules. Its main reactions are with transition metal centers, selenoproteins and selected thiol proteins, with glutathione peroxidases (GPxs) and peroxiredoxins (Prxs) being major targets. It reacts slowly with most thiol proteins, and how they become oxidized during redox signal transmission is not well understood. Recent Advances: Kinetic analysis indicates that Prxs and GPxs are overwhelmingly favored as targets for H2O2 in cells. Studies with localized probes indicate that H2O2 can be produced in cellular microdomains and be consumed by highly reactive targets before it can diffuse to other parts of the cell. Inactivation of these targets alone will not confine it to its site of production. Kinetic data indicate that oxidation of regulatory thiol proteins by H2O2 requires a facilitated mechanism such as directed transfer from source to target or a relay mediated through a highly reactive sensor. Critical Issues and Future Directions: Absolute rates of H2O2 production and steady-state concentrations in cells still need to be characterized. More information on cellular sites of production and action is required, and specific mechanisms of oxidation of regulatory proteins during redox signaling require further characterization. Antioxid. Redox Signal. 29, 541-551.
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Affiliation(s)
- Christine C Winterbourn
- Department of Pathology, Centre for Free Radical Research, University of Otago Christchurch , Christchurch, New Zealand
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43
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Guyon C, Le Vessel V, Meynier A, de Lamballerie M. Modifications of protein-related compounds of beef minced meat treated by high pressure. Meat Sci 2018; 142:32-37. [PMID: 29649737 DOI: 10.1016/j.meatsci.2018.03.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 03/22/2018] [Accepted: 03/23/2018] [Indexed: 01/30/2023]
Abstract
In this study, we evaluated the modifications of the protein-related compounds of minced beef treated with high pressure, including refrigeration after treatment. The free amino acid content, protein carbonyls and free thiol groups were assessed. High pressure up to 200 MPa had a significant effect. Above 300 MPa, irreversible structural changes occurred, with an increase in the protein oxidation products and a modification of the amounts of amino acids after 14 days of storage. Protein carbonyls and the free thiols were correlated with the free amino acids. These results showed that protein modifications under pressure result from both conformational and chemical changes, possibly associated with lipid changes under high-pressure treatment.
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Affiliation(s)
- Claire Guyon
- GEPEA, UMR CNRS 6144, ONIRIS - Géraudière, CS 82225, 44322, Nantes cedex 03, France
| | - Valentin Le Vessel
- GEPEA, UMR CNRS 6144, ONIRIS - Géraudière, CS 82225, 44322, Nantes cedex 03, France
| | - Anne Meynier
- UR1268 BIA (Biopolymères Interactions Assemblages), INRA, 44300 Nantes, France
| | - Marie de Lamballerie
- GEPEA, UMR CNRS 6144, ONIRIS - Géraudière, CS 82225, 44322, Nantes cedex 03, France.
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Lund MN, Petersen MA, Andersen ML, Lunde C. Effect of Protease Treatment during Mashing on Protein-Derived Thiol Content and Flavor Stability of Beer during Storage. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2018. [DOI: 10.1094/asbcj-2015-0602-01] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Marianne N. Lund
- Novozymes A/S, Krogshøjvej 36, DK-2880 Bagsvœrd, Denmark
- Department of Food Science, University of Copenhagen, Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark
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Murmann AN, Andersen P, Mauch A, Lund MN. Quantification of Protein-Derived Thiols during Atmosphere-Controlled Brewing in Laboratory Scale. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2018. [DOI: 10.1094/asbcj-2016-1109-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Anne N. Murmann
- Department of Food Science, University of Copenhagen, Rolighedsvej 30, DK-1958 Frederiksberg C
- Novozymes A/S, Krogshøjvej 36, DK-2880 Bagsvœrd, Denmark
| | | | | | - Marianne N. Lund
- Department of Food Science, University of Copenhagen, Rolighedsvej 30, DK-1958 Frederiksberg C
- Novozymes A/S, Krogshøjvej 36, DK-2880 Bagsvœrd, Denmark
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Abstract
Many acute and chronic lung diseases could benefit from improved regeneration therapy. In development and throughout life, genetically encoded exposure memory systems allow environmental exposures, diet, and infectious agents to direct subsequent phenotypic adaptation and responses. The impact of such memory systems on lung regeneration is currently unknown. This article provides a brief overview of advances in redox biology and medicine as a framework for elucidating exposure memory and delineating spatiotemporal responses in lung regeneration. New imaging and omics methods enable precise definition to advance knowledge of development and the cumulative changes in lung biochemistry, structure, and cell populations occurring from prior and ongoing exposures. Importantly, conditioning steps may be needed to reverse exposure memory and enable effective regeneration. Thus, to complement developmental biology and regenerative medicine, research programs are needed to gain systematic knowledge of how lifelong exposures impact lung biology and support transition of lung regeneration from hypothetical to practical medicine.
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Andersen ML, Gundermann M, Danielsen BP, Lund MN. Kinetic Models for the Role of Protein Thiols during Oxidation in Beer. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:10820-10828. [PMID: 29129062 DOI: 10.1021/acs.jafc.7b05012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Thiol-containing proteins have been suggested to have antioxidative properties in beer. A kinetic model has been setup for the reactivity of thiols during early stages of oxidative degradation of beer. Kinetic analysis based on the proposed reaction mechanism allowed evaluation of the relative reactivity of beer components, such as bitter acids from hops and polyphenols. The rate constants for the reaction of 1-hydroxyethyl radicals, which are generated during radical mediated oxidation of ethanol in beer, with hop bitter acids and thiols were very similar, and the concentration of these compounds in beer is therefore essential for the relative reactivity. For a standard pilsner beer with 35 international bitter units with typical concentrations of thiols and hop bitter acids, thiols were found to react with ca. 9% of 1-hydroxyethyl radicals, while bitter acids from hops accounted for ca. 88% of the reaction with 1-hydroxyethyl radicals. Polyphenols were not found to account for any major part of the reaction with 1-hydroxyethyl radicals due to low reaction rates and low concentrations in pilsner beer compared to the other components. The kinetic model suggests that the concentration of thiols has to be increased in order to contribute with any significant antioxidative protection and that the fate of thiols during oxidation must be considered since some thiol oxidation products may induce further damage.
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Affiliation(s)
- Mogens L Andersen
- Department of Food Science, University of Copenhagen , Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark
| | - Matheo Gundermann
- Department of Food Science, University of Copenhagen , Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark
| | - Bente P Danielsen
- Department of Food Science, University of Copenhagen , Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark
| | - Marianne N Lund
- Department of Food Science, University of Copenhagen , Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark
- Department of Biomedical Sciences, University of Copenhagen , Blegdamsvej 3, DK-2200 Copenhagen N, Denmark
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48
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Cortese-Krott MM, Koning A, Kuhnle GG, Nagy P, Bianco CL, Pasch A, Wink DA, Fukuto JM, Jackson AA, van Goor H, Olson KR, Feelisch M. The Reactive Species Interactome: Evolutionary Emergence, Biological Significance, and Opportunities for Redox Metabolomics and Personalized Medicine. Antioxid Redox Signal 2017; 27:684-712. [PMID: 28398072 PMCID: PMC5576088 DOI: 10.1089/ars.2017.7083] [Citation(s) in RCA: 218] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 04/10/2017] [Indexed: 12/20/2022]
Abstract
SIGNIFICANCE Oxidative stress is thought to account for aberrant redox homeostasis and contribute to aging and disease. However, more often than not, administration of antioxidants is ineffective, suggesting that our current understanding of the underlying regulatory processes is incomplete. Recent Advances: Similar to reactive oxygen species and reactive nitrogen species, reactive sulfur species are now emerging as important signaling molecules, targeting regulatory cysteine redox switches in proteins, affecting gene regulation, ion transport, intermediary metabolism, and mitochondrial function. To rationalize the complexity of chemical interactions of reactive species with themselves and their targets and help define their role in systemic metabolic control, we here introduce a novel integrative concept defined as the reactive species interactome (RSI). The RSI is a primeval multilevel redox regulatory system whose architecture, together with the physicochemical characteristics of its constituents, allows efficient sensing and rapid adaptation to environmental changes and various other stressors to enhance fitness and resilience at the local and whole-organism level. CRITICAL ISSUES To better characterize the RSI-related processes that determine fluxes through specific pathways and enable integration, it is necessary to disentangle the chemical biology and activity of reactive species (including precursors and reaction products), their targets, communication systems, and effects on cellular, organ, and whole-organism bioenergetics using system-level/network analyses. FUTURE DIRECTIONS Understanding the mechanisms through which the RSI operates will enable a better appreciation of the possibilities to modulate the entire biological system; moreover, unveiling molecular signatures that characterize specific environmental challenges or other forms of stress will provide new prevention/intervention opportunities for personalized medicine. Antioxid. Redox Signal. 00, 000-000.
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Affiliation(s)
- Miriam M. Cortese-Krott
- Cardiovascular Research Laboratory, Department of Cardiology, Pneumology and Angiology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - Anne Koning
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Gunter G.C. Kuhnle
- Department of Food and Nutritional Sciences, University of Reading, Reading, United Kingdom
| | - Peter Nagy
- Molecular Immunology and Toxicology, National Institute of Oncology, Budapest, Hungary
| | | | - Andreas Pasch
- Department of Clinical Chemistry, University of Bern and Calciscon AG, Bern, Switzerland
| | - David A. Wink
- Cancer and Inflammation Program, National Cancer Institute, National Institutes of Health, Frederick, Maryland
| | - Jon M. Fukuto
- Department of Chemistry, Sonoma State University, Rohnert Park, California
| | - Alan A. Jackson
- NIHR Southampton Biomedical Research Center, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Harry van Goor
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Kenneth R. Olson
- Indiana University School of Medicine-South Bend, South Bend, Indiana
| | - Martin Feelisch
- NIHR Southampton Biomedical Research Center, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
- Clinical and Experimental Sciences, Faculty of Medicine, Southampton General Hospital and Institute for Life Sciences, University of Southampton, Southampton, United Kingdom
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49
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Zhou Y, Yang W, Zhou G, Xu X, Zhang Z, Ahmad MI, Li C. Changes in in vitro
protein digestion of retort-pouched pork belly during 120-day storage. Int J Food Sci Technol 2017. [DOI: 10.1111/ijfs.13560] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yiting Zhou
- Key Laboratory of Meat Processing and Quality Control; MOE; Key Laboratory of Meat Processing; MOA; Jiang Synergetic Innovation Center of Meat Processing and Quality Control; Nanjing Agricultural University; Nanjing 210095 China
| | - Wanjun Yang
- Key Laboratory of Meat Processing and Quality Control; MOE; Key Laboratory of Meat Processing; MOA; Jiang Synergetic Innovation Center of Meat Processing and Quality Control; Nanjing Agricultural University; Nanjing 210095 China
| | - Guanghong Zhou
- Key Laboratory of Meat Processing and Quality Control; MOE; Key Laboratory of Meat Processing; MOA; Jiang Synergetic Innovation Center of Meat Processing and Quality Control; Nanjing Agricultural University; Nanjing 210095 China
| | - Xinglian Xu
- Key Laboratory of Meat Processing and Quality Control; MOE; Key Laboratory of Meat Processing; MOA; Jiang Synergetic Innovation Center of Meat Processing and Quality Control; Nanjing Agricultural University; Nanjing 210095 China
| | - Zhigang Zhang
- State Key Laboratory of Food Safety Technology for Meat Products; Xiamen 361000 China
| | - Muhammad Ijaz Ahmad
- Key Laboratory of Meat Processing and Quality Control; MOE; Key Laboratory of Meat Processing; MOA; Jiang Synergetic Innovation Center of Meat Processing and Quality Control; Nanjing Agricultural University; Nanjing 210095 China
| | - Chunbao Li
- Key Laboratory of Meat Processing and Quality Control; MOE; Key Laboratory of Meat Processing; MOA; Jiang Synergetic Innovation Center of Meat Processing and Quality Control; Nanjing Agricultural University; Nanjing 210095 China
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Benfeitas R, Uhlen M, Nielsen J, Mardinoglu A. New Challenges to Study Heterogeneity in Cancer Redox Metabolism. Front Cell Dev Biol 2017; 5:65. [PMID: 28744456 PMCID: PMC5504267 DOI: 10.3389/fcell.2017.00065] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 06/26/2017] [Indexed: 12/13/2022] Open
Abstract
Reactive oxygen species (ROS) are important pathophysiological molecules involved in vital cellular processes. They are extremely harmful at high concentrations because they promote the generation of radicals and the oxidation of lipids, proteins, and nucleic acids, which can result in apoptosis. An imbalance of ROS and a disturbance of redox homeostasis are now recognized as a hallmark of complex diseases. Considering that ROS levels are significantly increased in cancer cells due to mitochondrial dysfunction, ROS metabolism has been targeted for the development of efficient treatment strategies, and antioxidants are used as potential chemotherapeutic drugs. However, initial ROS-focused clinical trials in which antioxidants were supplemented to patients provided inconsistent results, i.e., improved treatment or increased malignancy. These different outcomes may result from the highly heterogeneous redox responses of tumors in different patients. Hence, population-based treatment strategies are unsuitable and patient-tailored therapeutic approaches are required for the effective treatment of patients. Moreover, due to the crosstalk between ROS, reducing equivalents [e.g., NAD(P)H] and central metabolism, which is heterogeneous in cancer, finding the best therapeutic target requires the consideration of system-wide approaches that are capable of capturing the complex alterations observed in all of the associated pathways. Systems biology and engineering approaches may be employed to overcome these challenges, together with tools developed in personalized medicine. However, ROS- and redox-based therapies have yet to be addressed by these methodologies in the context of disease treatment. Here, we review the role of ROS and their coupled redox partners in tumorigenesis. Specifically, we highlight some of the challenges in understanding the role of hydrogen peroxide (H2O2), one of the most important ROS in pathophysiology in the progression of cancer. We also discuss its interplay with antioxidant defenses, such as the coupled peroxiredoxin/thioredoxin and glutathione/glutathione peroxidase systems, and its reducing equivalent metabolism. Finally, we highlight the need for system-level and patient-tailored approaches to clarify the roles of these systems and identify therapeutic targets through the use of the tools developed in personalized medicine.
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Affiliation(s)
- Rui Benfeitas
- Science for Life Laboratory, KTH Royal Institute of TechnologyStockholm, Sweden
| | - Mathias Uhlen
- Science for Life Laboratory, KTH Royal Institute of TechnologyStockholm, Sweden
| | - Jens Nielsen
- Science for Life Laboratory, KTH Royal Institute of TechnologyStockholm, Sweden.,Department of Biology and Biological Engineering, Chalmers University of TechnologyGothenburg, Sweden
| | - Adil Mardinoglu
- Science for Life Laboratory, KTH Royal Institute of TechnologyStockholm, Sweden.,Department of Biology and Biological Engineering, Chalmers University of TechnologyGothenburg, Sweden
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