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Xiong Z, Tan H, Qiu Y, Wu Y, Meng X, Chen H, Wei L, Li X. Short-time ozone treatment promotes protease-mediated destruction of B cell allergen epitopes by altering the structural characteristics of whey protein. Food Funct 2024; 15:5539-5553. [PMID: 38712538 DOI: 10.1039/d4fo00754a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
A novel processing method combining short-time ozone pretreatment with hydrolysis has been developed to reduce whey protein allergenicity. The results showed that ozone treatment altered the whey protein spatial structure, initially increasing the surface hydrophobicity index, and then decreasing due to polymer formation as the time increased. Under the optimized conditions of alkaline protease-mediated hydrolysis, a 10-second pre-exposure to ozone significantly promoted the reduction in the IgE binding capacity of whey protein without compromising the hydrolysis efficiency. Compared with whey protein, the degranulation of KU812 cells stimulated by this hydrolysate decreased by 20.54%, 17.99%, and 22.80% for IL-6, β-hexosaminidase, and histamine, respectively. In vitro simulated gastrointestinal digestion confirmed increased digestibility and reduced allergenicity. Peptidomics identification revealed that short-time ozonation exposed allergen epitopes, allowing alkaline protease to target these epitopes more effectively, particularly those associated with α-lactalbumin. These findings suggest the promising application of this processing method in mitigating the allergenicity of whey protein.
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Affiliation(s)
- Ziyi Xiong
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
- School of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
| | - Hongkai Tan
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
- School of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
| | - Yu Qiu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
- School of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
| | - Yong Wu
- School of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
- Sino-German Joint Research Institute, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
| | - Xuanyi Meng
- School of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
- Sino-German Joint Research Institute, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
| | - Hongbing Chen
- School of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
- Sino-German Joint Research Institute, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
| | - Linsheng Wei
- School of Resources and Environment, Nanchang University, Nanchang, Jiangxi 330031, P.R. China
| | - Xin Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
- School of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang, Jiangxi 330047, P.R. China
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2
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Wu S, Zhu Q, Liu F, Pei C, Hong D, Zhang Y, Lai S. Multiphase reactions of proteins in the air: Oligomerization, nitration and degradation of bovine serum albumin upon ambient exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 924:171617. [PMID: 38467257 DOI: 10.1016/j.scitotenv.2024.171617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 03/05/2024] [Accepted: 03/08/2024] [Indexed: 03/13/2024]
Abstract
Proteins in atmospheric aerosol can react with atmospheric pollutants such as ozone (O3) and nitrogen dioxide (NO2) in the atmosphere via the reactions of oxidation, nitration, and cross-linking etc. Currently, the reactions have been more thoroughly studied in the laboratory but rarely investigated in the ambient environment. In this study, we used bovine serum albumin (BSA) as the model protein to conduct the exposure experiment in the ambient environment in southern China, an area with increasing oxidative capacity, to investigate the reactions of proteins in the atmosphere. We observed the occurrence of oligomerization, nitration and degradation of BSA upon exposure. The mass fraction of BSA monomer decreased by 5.86 ± 1.61% after exposure and those of dimers, trimers and higher oligomers increased by 1.04 ± 0.49%, 1.37 ± 0.74% and 3.40 ± 1.06%, respectively. Simultaneously, the nitration degrees of monomers, dimers, trimers and higher oligomers increased by 0.42 ± 0.15%, 0.53 ± 0.15%, 0.55 ± 0.28% and 2.15 ± 1.01%, respectively. The results show that oligomerization was significantly affected by O3 and temperature and nitration was jointly affected by O3, temperature and relative humidity, indicating the important role of atmospheric oxidants in the atmospheric reactions of protein. Atmospheric degradation of BSA was observed with the release of free amino acids (FAAs) such as glycine, alanine, serine and methionine. Glycine was the dominant FAA with a molar yield ranging from ∼8% to 33% for BSA. The estimated stoichiometric coefficient (α) of glycine is 10-7-10-6 for the degradation of BSA upon O3. Our observation suggests the occurrence of protein reactions in the oxidative ambient environment, leading to the production of nitrated products, oligomers and low molecular weight products such as peptides and FAAs. This study may deepen the current understanding of the atmospheric reaction mechanisms and reveal the influence of environmental factors in the atmosphere.
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Affiliation(s)
- Shiyi Wu
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Qiaoze Zhu
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Fobang Liu
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, Shanxi 710049, China
| | - Chenglei Pei
- Guangzhou Sub-branch of Guangdong Ecological and Environmental Monitoring Center, Guangzhou 510030, China
| | - Dachi Hong
- Guangzhou Sub-branch of Guangdong Ecological and Environmental Monitoring Center, Guangzhou 510030, China
| | - Yingyi Zhang
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
| | - Senchao Lai
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
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3
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Renzone G, Arena S, Scaloni A. Cross-linking reactions in food proteins and proteomic approaches for their detection. MASS SPECTROMETRY REVIEWS 2022; 41:861-898. [PMID: 34250627 DOI: 10.1002/mas.21717] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 06/29/2021] [Accepted: 06/29/2021] [Indexed: 06/13/2023]
Abstract
Various protein cross-linking reactions leading to molecular polymerization and covalent aggregates have been described in processed foods. They are an undesired side effect of processes designed to reduce bacterial load, extend shelf life, and modify technological properties, as well as being an expected result of treatments designed to modify raw material texture and function. Although the formation of these products is known to affect the sensory and technological properties of foods, the corresponding cross-linking reactions and resulting protein polymers have not yet undergone detailed molecular characterization. This is essential for describing how their generation can be related to food processing conditions and quality parameters. Due to the complex structure of cross-linked species, bottom-up proteomic procedures developed to characterize various amino acid modifications associated with food processing conditions currently offer a limited molecular description of bridged peptide structures. Recent progress in cross-linking mass spectrometry for the topological characterization of protein complexes has facilitated the development of various proteomic methods and bioinformatic tools for unveiling bridged species, which can now also be used for the detailed molecular characterization of polymeric cross-linked products in processed foods. We here examine their benefits and limitations in terms of evaluating cross-linked food proteins and propose future scenarios for application in foodomics. They offer potential for understanding the protein cross-linking formation mechanisms in processed foods, and how the inherent beneficial properties of treated foodstuffs can be preserved or enhanced.
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Affiliation(s)
- Giovanni Renzone
- Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, Naples, Italy
| | - Simona Arena
- Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, Naples, Italy
| | - Andrea Scaloni
- Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, Naples, Italy
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4
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Yang YF, Zhao XH. Structure and property changes of whey protein isolate in response to the chemical modification mediated by horseradish peroxidase, glucose oxidase and d-glucose. Food Chem 2022; 373:131328. [PMID: 34700037 DOI: 10.1016/j.foodchem.2021.131328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 08/25/2021] [Accepted: 10/02/2021] [Indexed: 11/19/2022]
Abstract
Whey protein isolate (WPI) was modified by a ternary system containing horseradish peroxidase, glucose oxidase and d-glucose through the one- and two-step protocols, yielding two respective crosslinked products MWPI-1 and MWPI-2 with the enhanced relative dityrosine contents (127.4 and 101.0). Compared with WPI, both MWPI-1 and MWPI-2 had much ordered secondary structure, increased disulfide-bond contents, average particle sizes, surface hydrophobicity, oil-binding capacity, emulsification and thermal stability, but reduced free sulfhydryl groups contents and in vitro digestibility. Moreover, both MWPI-1 and MWPI-2 in dispersions showed higher apparent viscosity, larger viscoelastic moduli than WPI, together with the lower gelling temperatures (67.1 °C and 70.1 °C versus 73.6 °C). Overall, MWPI-1 with a higher crosslinking extent consistently exhibited more remarkable property alteration. It is concluded that the ternary system is an effective approach when aiming to modify secondary structure especially these properties of WPI, such as aggregation, emulsification, gelation, rheology and thermal stability.
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Affiliation(s)
- Yu-Fei Yang
- School of Biology and Food Engineering, Guangdong University of Petrochemical Technology, 525000 Maoming, Guangdong, PR China; State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 214122 Wuxi, Jiangsu, PR China
| | - Xin-Huai Zhao
- School of Biology and Food Engineering, Guangdong University of Petrochemical Technology, 525000 Maoming, Guangdong, PR China; Research Centre of Food Nutrition and Human Healthcare, Guangdong University of Petrochemical Technology, 525000 Maoming, Guangdong, PR China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong University of Petrochemical Technology, 525000 Maoming, Guangdong, PR China.
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5
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The structural, thermal, pasting and gel properties of the mixtures of enzyme-treated potato protein and potato starch. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112882] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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6
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Maddock RMA, Pollard GJ, Moreau NG, Perry JJ, Race PR. Enzyme-catalysed polymer cross-linking: Biocatalytic tools for chemical biology, materials science and beyond. Biopolymers 2020; 111:e23390. [PMID: 32640085 DOI: 10.1002/bip.23390] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/13/2020] [Accepted: 06/15/2020] [Indexed: 12/11/2022]
Abstract
Intermolecular cross-linking is one of the most important techniques that can be used to fundamentally alter the material properties of a polymer. The introduction of covalent bonds between individual polymer chains creates 3D macromolecular assemblies with enhanced mechanical properties and greater chemical or thermal tolerances. In contrast to many chemical cross-linking reactions, which are the basis of thermoset plastics, enzyme catalysed processes offer a complimentary paradigm for the assembly of cross-linked polymer networks through their predictability and high levels of control. Additionally, enzyme catalysed reactions offer an inherently 'greener' and more biocompatible approach to covalent bond formation, which could include the use of aqueous solvents, ambient temperatures, and heavy metal-free reagents. Here, we review recent progress in the development of biocatalytic methods for polymer cross-linking, with a specific focus on the most promising candidate enzyme classes and their underlying catalytic mechanisms. We also provide exemplars of the use of enzyme catalysed cross-linking reactions in industrially relevant applications, noting the limitations of these approaches and outlining strategies to mitigate reported deficiencies.
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Affiliation(s)
- Rosie M A Maddock
- School of Biochemistry, University of Bristol, University Walk, Bristol, UK.,BrisSynBio Synthetic Biology Research Centre, Life Sciences Building, Tyndall Avenue University of Bristol, Bristol, UK
| | - Gregory J Pollard
- School of Biochemistry, University of Bristol, University Walk, Bristol, UK
| | - Nicolette G Moreau
- School of Biochemistry, University of Bristol, University Walk, Bristol, UK
| | - Justin J Perry
- Department of Applied Sciences, Northumbria University, Ellison Building, Newcastle upon Tyne, UK
| | - Paul R Race
- School of Biochemistry, University of Bristol, University Walk, Bristol, UK.,BrisSynBio Synthetic Biology Research Centre, Life Sciences Building, Tyndall Avenue University of Bristol, Bristol, UK
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7
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Roles of four enzyme crosslinks on structural, thermal and gel properties of potato proteins. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109116] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Identification and Description of the Key Molecular Components of the Egg Strings of the Salmon Louse ( Lepeophtheirus salmonis). Genes (Basel) 2019; 10:genes10121004. [PMID: 31817028 PMCID: PMC6947537 DOI: 10.3390/genes10121004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/21/2019] [Accepted: 11/30/2019] [Indexed: 12/12/2022] Open
Abstract
The salmon louse Lepeophtheirus salmonis is a parasite of Atlantic salmon and other salmonids. Every year, it causes high costs for the Norwegian aquaculture industry. While the morphology of the female genital tract has been described, knowledge of the molecular basis of reproduction is very limited. We identified nine genes which are expressed exclusively in the female cement gland, the organ responsible for cement production, which is used to hold the eggs together and keep them attached to their mother in egg strings. Six of these genes encode proteins with signal peptides and probably form the main component of the cement. Two other genes are peroxidases, which are probably important in the cement formation. The last gene is not similar to any known protein, but contains a transmembrane domain. A knockdown of all these genes leads to missing or deformed egg strings, preventing reproduction of the lice. The correct assemblage of the cement in the cement gland is essential for successful reproduction of salmon lice. Similar proteins seem to be present in other copepod species, as well.
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9
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Liu F, Lakey PSJ, Berkemeier T, Tong H, Kunert AT, Meusel H, Cheng Y, Su H, Fröhlich-Nowoisky J, Lai S, Weller MG, Shiraiwa M, Pöschl U, Kampf CJ. Atmospheric protein chemistry influenced by anthropogenic air pollutants: nitration and oligomerization upon exposure to ozone and nitrogen dioxide. Faraday Discuss 2019; 200:413-427. [PMID: 28574569 DOI: 10.1039/c7fd00005g] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The allergenic potential of airborne proteins may be enhanced via post-translational modification induced by air pollutants like ozone (O3) and nitrogen dioxide (NO2). The molecular mechanisms and kinetics of the chemical modifications that enhance the allergenicity of proteins, however, are still not fully understood. Here, protein tyrosine nitration and oligomerization upon simultaneous exposure of O3 and NO2 were studied in coated-wall flow-tube and bulk solution experiments under varying atmospherically relevant conditions (5-200 ppb O3, 5-200 ppb NO2, 45-96% RH), using bovine serum albumin as a model protein. Generally, more tyrosine residues were found to react via the nitration pathway than via the oligomerization pathway. Depending on reaction conditions, oligomer mass fractions and nitration degrees were in the ranges of 2.5-25% and 0.5-7%, respectively. The experimental results were well reproduced by the kinetic multilayer model of aerosol surface and bulk chemistry (KM-SUB). The extent of nitration and oligomerization strongly depends on relative humidity (RH) due to moisture-induced phase transition of proteins, highlighting the importance of cloud processing conditions for accelerated protein chemistry. Dimeric and nitrated species were major products in the liquid phase, while protein oligomerization was observed to a greater extent for the solid and semi-solid phase states of proteins. Our results show that the rate of both processes was sensitive towards ambient ozone concentration, but rather insensitive towards different NO2 levels. An increase of tropospheric ozone concentrations in the Anthropocene may thus promote pro-allergic protein modifications and contribute to the observed increase of allergies over the past decades.
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Affiliation(s)
- Fobang Liu
- Multiphase Chemistry Department, Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128 Mainz, Germany
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10
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Isaschar-Ovdat S, Fishman A. Crosslinking of food proteins mediated by oxidative enzymes – A review. Trends Food Sci Technol 2018. [DOI: 10.1016/j.tifs.2017.12.011] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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11
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Roy P, Dinda AK, Chaudhury S, Dasgupta S. β-cyclodextrin encapsulated polyphenols as effective antioxidants. Biopolymers 2017; 109. [DOI: 10.1002/bip.23084] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 10/09/2017] [Accepted: 10/24/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Pritam Roy
- Department of Chemistry; Indian Institute of Technology Kharagpur; Kharagpur 721302 India
| | - Amit Kumar Dinda
- Department of Chemistry; Indian Institute of Technology Kharagpur; Kharagpur 721302 India
| | | | - Swagata Dasgupta
- Department of Chemistry; Indian Institute of Technology Kharagpur; Kharagpur 721302 India
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12
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McGill M, Coburn JM, Partlow BP, Mu X, Kaplan DL. Molecular and macro-scale analysis of enzyme-crosslinked silk hydrogels for rational biomaterial design. Acta Biomater 2017; 63:76-84. [PMID: 28919509 DOI: 10.1016/j.actbio.2017.09.020] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 08/31/2017] [Accepted: 09/13/2017] [Indexed: 11/28/2022]
Abstract
Silk fibroin-based hydrogels have exciting applications in tissue engineering and therapeutic molecule delivery; however, their utility is dependent on their diffusive properties. The present study describes a molecular and macro-scale investigation of enzymatically-crosslinked silk fibroin hydrogels, and demonstrates that these systems have tunable crosslink density and diffusivity. We developed a liquid chromatography tandem mass spectroscopy (LC-MS/MS) method to assess the quantity and order of covalent tyrosine crosslinks in the hydrogels. This analysis revealed between 28 and 56% conversion of tyrosine to dityrosine, which was dependent on the silk concentration and reactant concentration. The crosslink density was then correlated with storage modulus, revealing that both crosslinking and protein concentration influenced the mechanical properties of the hydrogels. The diffusive properties of the bulk material were studied by fluorescence recovery after photobleaching (FRAP), which revealed a non-linear relationship between silk concentration and diffusivity. As a result of this work, a model for synthesizing hydrogels with known crosslink densities and diffusive properties has been established, enabling the rational design of silk hydrogels for biomedical applications. STATEMENT OF SIGNIFICANCE Hydrogels from naturally-derived silk polymers offer versitile opportunities in the biomedical field, however, their design has largely been an empirical process. We present a fundamental study of the crosslink density, storage modulus, and diffusion behavior of enzymatically-crosslinked silk hydrogels to better inform scaffold design. These studies revealed unexpected non-linear trends in the crosslink density and diffusivity of silk hydrogels with respect to protein concentration and crosslink reagent concentration. This work demonstrates the tunable diffusivity and crosslinking in silk fibroin hydrogels, and enables the rational design of biomaterials. Further, the characterization methods presented have applications for other materials with dityrosine crosslinks, which are found in nature as post-translational modificaitons, as well as in engineered matrices such as tyramine-substituted hyaluronic acid and recombinant resilin.
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Affiliation(s)
- Meghan McGill
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Jeannine M Coburn
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA; Department of Biomedical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA
| | - Benjamin P Partlow
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Xuan Mu
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA.
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13
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Study on the influence of oxidative stress on the fibrillization of fibrinogen. Biochem J 2016; 473:4373-4384. [DOI: 10.1042/bcj20160702] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 09/27/2016] [Accepted: 10/04/2016] [Indexed: 12/25/2022]
Abstract
Human fibrinogen is an important coagulation factor as well as an independent predictor of coronary heart disease and stroke. Analysis of dysfibrinogens may provide useful information and help us to understand the molecular defects in fibrin polymerization. In the present study, we investigated the influence of oxidative stress of fibrinogen induced by H2O2 on the polymerization state of fibrin. UV absorbance spectroscopy, circular dichroism, ζ-potential, dynamic light scattering and steady shear viscosity were all employed to study the influence of oxidative stress on the molecular structure, the surface charges, and the size and shape of fibrinogen molecules. The fibrin morphology obtained was imaged and investigated using atomic force microscopy. The results demonstrated that the cross-linking, branching and height distribution of formed fibrin will be influenced by the oxidative stress of fibrinogen. This study presents new insights into the aggregation behaviour of fibrinogen and will be helpful to understand the formation mechanism of thrombosis under oxidative stress.
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14
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Lončar N, Colpa DI, Fraaije MW. Exploring the biocatalytic potential of a DyP-type peroxidase by profiling the substrate acceptance of Thermobifida fusca DyP peroxidase. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.12.078] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Rosu C, Cueto R, Russo PS. Poly(colloid)s: "Polymerization" of Poly(l-tyrosine)-silica Composite Particles through the Photoinduced Cross-Linking of Unmodified Proteins Method. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:8392-8402. [PMID: 27504929 DOI: 10.1021/acs.langmuir.6b01815] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Photoinduced cross-linking of unmodified proteins, PICUP, was extended to core-shell silica-polypeptide composite particles to produce poly(colloid)s. Silica particles coated with poly(l-tyrosine), PTYR-SiO2, served as the monomer units. The PICUP reaction accomplished the formation of dityrosil linkages between the tyrosine units by illumination of photo-oxidizing ruthenium(II) bipyridyl catalyst under physiological conditions. The PICUP method was compared with an enzymatic route intermediated by horseradish peroxidase as catalyst. The PTYR-SiO2 particles feature high PTYR content in the shell, which facilitated the formation of heavily cross-linked but unstructured aggregates. After magnetic alignment of superparamagnetic PTYR-SiO2-cobalt composite particles, only the PICUP approach enabled the preparation of isolated chain-like poly(colloid)s. The cross-linking products were confirmed by FTIR. The native secondary structure of poly(l-tyrosine) is preserved in these poly(colloid)s. Because the PICUP reaction does not require the modification of the polypeptide structure, the cross-linked PTYR will retain its characteristic functions as a poly(amino acid). The PICUP method opens the door to a variety of PTYR-based poly(colloid) architectures.
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Affiliation(s)
- Cornelia Rosu
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University , Baton Rouge, Louisiana 70803, United States
- Georgia Tech Polymer Network, GTPN, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Rafael Cueto
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Paul S Russo
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University , Baton Rouge, Louisiana 70803, United States
- School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
- Georgia Tech Polymer Network, GTPN, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
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16
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Domeradzka NE, Werten MWT, Wolf FAD, de Vries R. Protein cross-linking tools for the construction of nanomaterials. Curr Opin Biotechnol 2016; 39:61-67. [DOI: 10.1016/j.copbio.2016.01.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 01/06/2016] [Accepted: 01/11/2016] [Indexed: 12/26/2022]
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17
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Identification of dityrosine cross-linked sites in oxidized human serum albumin. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1019:147-55. [DOI: 10.1016/j.jchromb.2015.12.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 12/10/2015] [Accepted: 12/11/2015] [Indexed: 11/18/2022]
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18
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Peroxidase induced oligo-tyrosine cross-links during polymerization of α-lactalbumin. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2015; 1854:1898-1905. [DOI: 10.1016/j.bbapap.2015.08.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 07/28/2015] [Accepted: 08/07/2015] [Indexed: 11/17/2022]
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Kampf CJ, Liu F, Reinmuth-Selzle K, Berkemeier T, Meusel H, Shiraiwa M, Pöschl U. Protein Cross-Linking and Oligomerization through Dityrosine Formation upon Exposure to Ozone. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:10859-66. [PMID: 26287571 DOI: 10.1021/acs.est.5b02902] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Air pollution is a potential driver for the increasing prevalence of allergic disease, and post-translational modification by air pollutants can enhance the allergenic potential of proteins. Here, the kinetics and mechanism of protein oligomerization upon ozone (O3) exposure were studied in coated-wall flow tube experiments at environmentally relevant O3 concentrations, relative humidities and protein phase states (amorphous solid, semisolid, and liquid). We observed the formation of protein dimers, trimers, and higher oligomers, and attribute the cross-linking to the formation of covalent intermolecular dityrosine species. The oligomerization proceeds fast on the surface of protein films. In the bulk material, reaction rates are limited by diffusion depending on phase state and humidity. From the experimental data, we derive a chemical mechanism and rate equations for a kinetic multilayer model of surface and bulk reaction enabling the prediction of oligomer formation. Increasing levels of tropospheric O3 in the Anthropocene may promote the formation of protein oligomers with enhanced allergenicity and may thus contribute to the increasing prevalence of allergies.
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Affiliation(s)
- Christopher J Kampf
- Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg University Mainz , 55128 Mainz, Germany
- Multiphase Chemistry Department, Max Planck Institute for Chemistry , 55128 Mainz, Germany
| | - Fobang Liu
- Multiphase Chemistry Department, Max Planck Institute for Chemistry , 55128 Mainz, Germany
| | | | - Thomas Berkemeier
- Multiphase Chemistry Department, Max Planck Institute for Chemistry , 55128 Mainz, Germany
| | - Hannah Meusel
- Multiphase Chemistry Department, Max Planck Institute for Chemistry , 55128 Mainz, Germany
| | - Manabu Shiraiwa
- Multiphase Chemistry Department, Max Planck Institute for Chemistry , 55128 Mainz, Germany
| | - Ulrich Pöschl
- Multiphase Chemistry Department, Max Planck Institute for Chemistry , 55128 Mainz, Germany
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Dalsgaard TK, Triquigneaux M, Deterding L, Summers FA, Mortensen G, Mason RP. Oxidation of α-lactalbumin after a lactoperoxidase-catalysed reaction: An oxidomics approach applying immuno-spin trapping and mass spectrometry. Int Dairy J 2014. [DOI: 10.1016/j.idairyj.2013.11.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Saricay Y, Wierenga PA, de Vries R. Changes in protein conformation and surface hydrophobicity upon peroxidase-catalyzed cross-linking of apo-α-lactalbumin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:9345-9352. [PMID: 25207800 DOI: 10.1021/jf502664q] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this study, we explore the effect of peroxidase-catalyzed cross-linking on the molecular conformation of apo-α-lactalbumin (apo-α-LA) and the resulting changes in protein surface hydrophobicity. In studying conformational changes, we distinguish between early stages of the reaction ("partial cross-linking"), in which only protein oligomers (10(6) Da > Mw ≥ 10(4) Da) are formed, and a later stage ("full cross-linking"), in which larger protein particles (Mw ≥ 10(6) Da) are formed. Partial cross-linking induces a moderate loss of α-helical content. Surprisingly, further cross-linking leads to a partial return of α-helices that are lost upon early cross-linking. At the same time, for partially and fully cross-linked apo-α-LA, almost all tertiary structure is lost. The protein surface hydrophobicity first increases for partial cross-linking, but then decreases again at full cross-linking. Our results highlight the subtle changes in protein conformation and surface hydrophobicity of apo-α-LA upon peroxidase-catalyzed cross-linking.
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Affiliation(s)
- Yunus Saricay
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University , P.O. Box 8038, 6700 EK Wageningen, The Netherlands
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Dhayal SK, Gruppen H, de Vries R, Wierenga PA. Controlled formation of protein nanoparticles by enzymatic cross-linking of α-lactalbumin with horseradish peroxidase. Food Hydrocoll 2014. [DOI: 10.1016/j.foodhyd.2013.09.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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23
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Saricay Y, Wierenga P, de Vries R. Nanostructure development during peroxidase catalysed cross-linking of α-lactalbumin. Food Hydrocoll 2013. [DOI: 10.1016/j.foodhyd.2013.04.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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Dalsgaard TK, Triquigneaux M, Deterding L, Summers F, Ranguelova K, Mortensen G, Mason RP. Site-specific detection of radicals on α-lactalbumin after a riboflavin-sensitized reaction, detected by immuno-spin trapping, ESR, and MS. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:418-426. [PMID: 23249215 DOI: 10.1021/jf303973b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Free radicals and other oxidation products were characterized on α-lactalbumin with electron spin resonance (ESR), immuno-spin trapping, and mass spectrometry (MS) after riboflavin-mediated oxidation. Radicals were detected using the spin trap 5,5-dimethyl-1-pyrroline N-oxide (DMPO) in immuno-spin trapping with both enzyme-linked immunosorbent assay (ELISA) and Western blotting and further characterized with mass spectrometry. A DMPO-trapped radical was identified at His68 and another at one of the tyrosine residues, Tyr50 or Tyr36, respectively, generated by a type II or I mechanism. Not all tyrosyl radicals were trapped, as the secondary oxidation product, 3,4-dihydroxyphenylalanine (DOPA), was detected by mass spectrometry at Tyr18 and Tyr50. A further oxidation of DOPA resulted in the DOPA o-semiquinone radical, which was characterized by ESR. Both surface exposure and the neighboring residues in the local environment of the tertiary structure of α-lactalbumin seem to play a role in the generation of DMPO trapped radicals and secondary oxidation products.
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Affiliation(s)
- Trine K Dalsgaard
- Department of Food Science, Faculty of Science and Technology, Aarhus University, P.O. Box 50, DK-8830 Tjele, Denmark.
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Abstract
The process of protein crosslinking comprises the chemical, enzymatic, or chemoenzymatic formation of new covalent bonds between polypeptides. This allows (1) the site-directed coupling of proteins with distinct properties and (2) the de novo assembly of polymeric protein networks. Transferases, hydrolases, and oxidoreductases can be employed as catalysts for the synthesis of crosslinked proteins, thereby complementing chemical crosslinking strategies. Here, we review enzymatic approaches that are used for protein crosslinking at the industrial level or have shown promising potential in investigations on the lab-scale. We illustrate the underlying mechanisms of crosslink formation and point out the roles of the enzymes in their natural environments. Additionally, we discuss advantages and drawbacks of the enzyme-based crosslinking strategies and their potential for different applications.
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Affiliation(s)
- Tobias Heck
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomaterials, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
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26
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Saricay Y, Dhayal SK, Wierenga PA, de Vries R. Protein cluster formation during enzymatic cross-linking of globular proteins. Faraday Discuss 2012; 158:51-63; discussion 105-24. [DOI: 10.1039/c2fd20033c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Ter Haar R, Westphal Y, Wierenga PA, Schols HA, Gruppen H. Cross-linking behavior and foaming properties of bovine α-lactalbumin after glycation with various saccharides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:12460-12466. [PMID: 22010962 DOI: 10.1021/jf2032022] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
α-Lactalbumin was glycated via the Maillard reaction in the dry state using various mono- and oligosaccharides. The reaction resulted not only in coupling of the saccharides to α-lactalbumin but also in cross-linked proteins. The glycation rate and the extent of cross-link formation were highly dependent on the saccharide used. Glycation by arabinose and xylose led to a very fast protein cross-link formation, whereas glucose showed a relatively low protein cross-linking ability. The stability of foams, created using the various glycated protein samples, depended on the type of saccharide used, the extent of glycation, and possibly the amount of cross-linked protein. Compared to nonmodified α-lactalbumin, glycation with rhamnose and fucose improved foam stability, whereas application of glucose, galacturonic acid, and their oligosaccharides did not exert a clear effect. Mass spectrometric analysis revealed that dehydration of the Amadori products is an indicator of the formation of protein cross-links.
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Affiliation(s)
- Ruud Ter Haar
- Laboratory of Food Chemistry, Wageningen University, Bomenweg 2, 6703 HD Wageningen, The Netherlands
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Heilmann CJ, Sorgo AG, Siliakus AR, Dekker HL, Brul S, de Koster CG, de Koning LJ, Klis FM. Hyphal induction in the human fungal pathogen Candida albicans reveals a characteristic wall protein profile. Microbiology (Reading) 2011; 157:2297-2307. [DOI: 10.1099/mic.0.049395-0] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The ability of Candida albicans to switch from yeast to hyphal growth is essential for its virulence. The walls and especially the covalently attached wall proteins are involved in the primary host–pathogen interactions. Three hyphal induction methods were compared, based on fetal calf serum, the amino sugar N-acetylglucosamine (GlcNAc) and the mammalian cell culture medium Iscove’s modified Dulbecco’s medium (IMDM). GlcNAc and IMDM were preferred, allowing stable hyphal growth over a prolonged period without significant reversion to yeast growth and with high biomass yields. We employed Fourier transform-MS combined with a 15N-metabolically labelled reference culture as internal standard for relative quantification of changes in the wall proteome upon hyphal induction. A total of 21 wall proteins were quantified. Our induction methods triggered a similar response characterized by (i) a category of wall proteins showing strongly increased incorporation levels (Als3, Hwp2, Hyr1, Plb5 and Sod5), (ii) another category with strongly decreased levels (Rhd3, Sod4 and Ywp1) and (iii) a third one enriched for carbohydrate-active enzymes (including Cht2, Crh11, Mp65, Pga4, Phr1, Phr2 and Utr2) and showing only a limited response. This is, to our knowledge, the first systematic, quantitative analysis of the changes in the wall proteome of C. albicans upon hyphal induction. Finally, we propose new wall-protein-derived candidates for vaccine development.
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Affiliation(s)
- Clemens J. Heilmann
- Swammerdam Institute for Life Sciences, Universiteit van Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
| | - Alice G. Sorgo
- Swammerdam Institute for Life Sciences, Universiteit van Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
| | - Adriaan R. Siliakus
- Swammerdam Institute for Life Sciences, Universiteit van Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
| | - Henk L. Dekker
- Swammerdam Institute for Life Sciences, Universiteit van Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
| | - Stanley Brul
- Swammerdam Institute for Life Sciences, Universiteit van Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
| | - Chris G. de Koster
- Swammerdam Institute for Life Sciences, Universiteit van Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
| | - Leo J. de Koning
- Swammerdam Institute for Life Sciences, Universiteit van Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
| | - Frans M. Klis
- Swammerdam Institute for Life Sciences, Universiteit van Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
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