1
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Defant P, Regl C, Huber CG, Schubert M. The NMR signature of maltose-based glycation in full-length proteins. JOURNAL OF BIOMOLECULAR NMR 2024; 78:61-72. [PMID: 38114873 PMCID: PMC10981599 DOI: 10.1007/s10858-023-00432-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 11/15/2023] [Indexed: 12/21/2023]
Abstract
Reducing sugars can spontaneously react with free amines in protein side chains leading to posttranslational modifications (PTMs) called glycation. In contrast to glycosylation, glycation is a non-enzymatic modification with consequences on the overall charge, solubility, aggregation susceptibility and functionality of a protein. Glycation is a critical quality attribute of therapeutic monoclonal antibodies. In addition to glucose, also disaccharides like maltose can form glycation products. We present here a detailed NMR analysis of the Amadori product formed between proteins and maltose. For better comparison, data collection was done under denaturing conditions using 7 M urea-d4 in D2O. The here presented correlation patterns serve as a signature and can be used to identify maltose-based glycation in any protein that can be denatured. In addition to the model protein BSA, which can be readily glycated, we present data of the biotherapeutic abatacept containing maltose in its formulation buffer. With this contribution, we demonstrate that NMR spectroscopy is an independent method for detecting maltose-based glycation, that is suited for cross-validation with other methods.
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Affiliation(s)
- Pauline Defant
- Department of Biosciences and Medical Biology, University of Salzburg, Hellbrunnerstrasse 34, 5020, Salzburg, Austria
| | - Christof Regl
- Department of Biosciences and Medical Biology, University of Salzburg, Hellbrunnerstrasse 34, 5020, Salzburg, Austria
| | - Christian G Huber
- Department of Biosciences and Medical Biology, University of Salzburg, Hellbrunnerstrasse 34, 5020, Salzburg, Austria
| | - Mario Schubert
- Department of Biosciences and Medical Biology, University of Salzburg, Hellbrunnerstrasse 34, 5020, Salzburg, Austria.
- Department of Biology, Chemistry and Pharmacy, Freie Universität Berlin, Takustr. 3, 14195, Berlin, Germany.
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2
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Biedrzycki G, Wolszczak-Biedrzycka B, Dorf J, Michalak D, Żendzian-Piotrowska M, Zalewska A, Maciejczyk M. Antioxidant and Anti-Glycation Potential of H2 Receptor Antagonists-In Vitro Studies and a Systematic Literature Review. Pharmaceuticals (Basel) 2023; 16:1273. [PMID: 37765081 PMCID: PMC10535796 DOI: 10.3390/ph16091273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
Background: Histamine H2 receptor antagonists are a group of drugs that inhibit gastric juice secretion in gastrointestinal diseases. However, there is evidence to suggest that H2 blockers have a broader spectrum of activity. The antioxidant properties of H2 blockers have not been fully elucidated, and their anti-glycation potential has not been studied to date. Therefore, this is the first study to compare the antioxidant and antiglycation potentials of the most popular H2 antagonists (ranitidine, cimetidine, and famotidine) on protein glycoxidation in vitro. Methods: Bovine serum albumin (BSA) was glycated using sugars (glucose, fructose, galactose, and ribose) as well as aldehydes (glyoxal and methylglyoxal). Results: In the analyzed group of drugs, ranitidine was the only H2 blocker that significantly inhibited BSA glycation in all tested models. The contents of protein carbonyls, protein glycoxidation products (↓dityrosine, ↓N-formylkynurenine), and early (↓Amadori products) and late-stage (↓AGEs) protein glycation products decreased in samples of glycated BSA with the addition of ranitidine relative to BSA with the addition of the glycating agents. The anti-glycation potential of ranitidine was comparable to those of aminoguanidine and Trolox. In the molecular docking analysis, ranitidine was characterized by the lowest binding energy for BSA sites and could compete with protein amino groups for the addition of carbonyl groups. H2 blockers also scavenge free radicals. The strongest antioxidant properties are found in ranitidine, which additionally has the ability to bind transition metal ions. The systematic literature review also revealed that the anti-glycation effects of ranitidine could be attributed to its antioxidant properties. Conclusions: Ranitidine showed anti-glycation and antioxidant properties. Further research is needed, particularly in patients with diseases that promote protein glycation.
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Affiliation(s)
- Grzegorz Biedrzycki
- Hospital Pharmacy, Provincial Specialist Hospital in Olsztyn, 10-900 Olsztyn, Poland
| | - Blanka Wolszczak-Biedrzycka
- Department of Psychology and Sociology of Health and Public Health, University of Warmia and Mazury in Olsztyn, 10-900 Olsztyn, Poland
| | - Justyna Dorf
- Department of Clinical Laboratory Diagnostics, Medical University of Bialystok, 15-089 Bialystok, Poland
| | - Daniel Michalak
- Students Scientific Club “Biochemistry of Civilization Diseases”, Department of Hygiene, Epidemiology and Ergonomics, Medical University of Bialystok, 15-089 Bialystok, Poland
| | | | - Anna Zalewska
- Experimental Dentistry Laboratory, Medical University of Bialystok, 15-089 Bialystok, Poland
| | - Mateusz Maciejczyk
- Department of Hygiene, Epidemiology and Ergonomics, Medical University of Bialystok, 15-089 Bialystok, Poland
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3
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Gostomska-Pampuch K, Wiśniewski JR, Sowiński K, Gruszecki WI, Gamian A, Staniszewska M. Analysis of the Site-Specific Myoglobin Modifications in the Melibiose-Derived Novel Advanced Glycation End-Product. Int J Mol Sci 2022; 23:13036. [PMID: 36361822 PMCID: PMC9655033 DOI: 10.3390/ijms232113036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/17/2022] [Accepted: 10/25/2022] [Indexed: 02/06/2024] Open
Abstract
MAGE (melibiose-derived advanced glycation end-product) is the glycation product generated in the reaction of a model protein with melibiose. The in vivo analog accumulates in several tissues; however, its origin still needs explanation. In vitro MAGE is efficiently generated under dry conditions in contrast to the reaction carried in an aqueous solvent. Using liquid chromatography coupled with mass spectrometry, we analyzed the physicochemical properties and structures of myoglobin glycated with melibiose under different conditions. The targeted peptide analysis identified structurally different AGEs, including crosslinking and non-crosslinking modifications associated with lysine, arginine, and histidine residues. Glycation in a dry state was more efficient in the formation of structures containing an intact melibiose moiety (21.9%) compared to glycation under aqueous conditions (15.6%). The difference was reflected in characteristic fluorescence that results from protein structural changes and impact on a heme group of the model myoglobin protein. Finally, our results suggest that the formation of in vitro MAGE adduct is initiated by coupling melibiose to a model myoglobin protein. It is confirmed by the identification of intact melibiose moieties. The intermediate glycation product can further rearrange towards more advanced structures, including cross-links. This process can contribute to a pool of AGEs accumulating locally in vivo and affecting tissue biology.
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Affiliation(s)
- Kinga Gostomska-Pampuch
- Department of Biochemistry and Immunochemistry, Wroclaw Medical University, 50-368 Wroclaw, Poland
| | - Jacek R. Wiśniewski
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Karol Sowiński
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland
| | - Wieslaw I. Gruszecki
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland
| | - Andrzej Gamian
- Laboratory of Medical Microbiology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wroclaw, Poland
| | - Magdalena Staniszewska
- Faculty of Medicine, The John Paul II Catholic University of Lublin, 20-708 Lublin, Poland
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4
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Banerjee S. Biophysical and mass spectrometry based characterization of methylglyoxal-modified myoglobin: Role of advanced glycation end products in inducing protein structural alterations. Int J Biol Macromol 2021; 193:2165-2172. [PMID: 34774865 DOI: 10.1016/j.ijbiomac.2021.11.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 09/08/2021] [Accepted: 11/05/2021] [Indexed: 11/25/2022]
Abstract
Methylglyoxal (MG) is a highly reactive α-dicarbonyl compound which reacts with proteins to form advanced glycation end products (AGEs). MG-induced AGE (MAGE) formation is particularly significant in diabetic condition. In the current study, we have undertaken a time-dependant characterization of MG-modified myoglobin following incubation of the heme protein with the α-dicarbonyl compound for different time periods. Interestingly, mass spectrometric studies indicated modifications at two specific lysine residues, Lys-87 and Lys-133. The AGE adducts identified at Lys-87 were carboxymethyllysine and carboxyethyllysine, while those detected at Lys-133 included pyrraline-carboxymethyllysine and carboxyethyllysine, respectively. Far-UV CD studies revealed a decrease in the native α-helical content of the heme protein gradually with increasing time of MG incubation. In addition, MG modification was found to induce changes in tertiary structure as well as surface hydrophobicity of the heme protein. MG-derived AGE adducts thus appear to alter the structure of Mb considerably. Considering the increased level of MG in diabetic condition, the current study appears physiologically relevant in terms of understanding AGE-mediated protein modification and subsequent structural changes.
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Affiliation(s)
- Sauradipta Banerjee
- Department of Biophysics, Molecular Biology & Bioinformatics, University of Calcutta, 92, Acharyya Prafulla Chandra Road, Kolkata 700009, India.
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5
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Pereira Morais MP, Kassaar O, Flower SE, Williams RJ, James TD, van den Elsen JMH. Analysis of Protein Glycation Using Phenylboronate Acrylamide Gel Electrophoresis. Methods Mol Biol 2019; 1855:161-175. [PMID: 30426417 DOI: 10.1007/978-1-4939-8793-1_16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Carbohydrate modification of proteins adds complexity and diversity to the proteome. However, undesired carbohydrate modifications also occur in the form of glycation, which have been implicated in diseases such as diabetes, Alzheimer's disease, autoimmune diseases, and cancer. The analysis of glycated proteins is challenging due to their complexity and variability. Numerous analytical techniques have been developed that require expensive specialized equipment and complex data analysis. In this chapter, we describe two easy-to-use electrophoresis-based methods that will enable researchers to detect, identify, and analyze these posttranslational modifications. This new cost-effective methodology will aid the detection of unwanted glycation products in processed foods and may lead to new diagnostics and therapeutics for age-related chronic diseases.
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Affiliation(s)
| | - Omar Kassaar
- Department of Biology and Biochemistry, University of Bath, Bath, UK
| | | | - Robert J Williams
- Department of Biology and Biochemistry, University of Bath, Bath, UK
| | - Tony D James
- Department of Chemistry, University of Bath, Bath, UK
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6
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Giangrande C, Auberger N, Rentier C, Papini AM, Mallet JM, Lavielle S, Vinh J. Multi-Stage Mass Spectrometry Analysis of Sugar-Conjugated β-Turn Structures to be Used as Probes in Autoimmune Diseases. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2016; 27:735-747. [PMID: 26729456 DOI: 10.1007/s13361-015-1321-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 11/25/2015] [Accepted: 11/26/2015] [Indexed: 06/05/2023]
Abstract
Synthetic sugar-modified peptides were identified as antigenic probes in the context of autoimmune diseases. The aim of this work is to provide a mechanistic study on the fragmentation of different glycosylated analogs of a synthetic antigenic probe able to detect antibodies in a subpopulation of multiple sclerosis patients. In particular the N-glucosylated type I' β-turn peptide structure called CSF114(Glc) was used as a model to find signature fragmentations exploring the potential of multi-stage mass spectrometry by MALDI-LTQ Orbitrap. Here we compare the fragmentation of the glucosylated form of the synthetic peptide CSF114(Glc), bearing a glucose moiety on an asparagine residue, with less or non- immunoreactive forms, bearing different sugar-modifications, such as CSF114(GlcNAc), modified with a residue of N-acetylglucosamine, and CSF114[Lys(7)(1-deoxyfructopyranosyl)], this last one modified with a 1-deoxyfructopyranosyl moiety on a lysine at position 7. The analysis was set up using a synthetic compound specifically deuterated on the C-1 to compare its fragmentation with the fragmentation of the undeuterated form, and thus ascertain with confidence the presence on an Asn(Glc) within a peptide sequence. At the end of the study, our analysis led to the identification of signature neutral losses inside the sugar moieties to characterize the different types of glycosylation/glycation. The interest of this study lies in the possibility of applyimg this approach to the discovery of biomarkers and in the diagnosis of autoimmune diseases. Graphical Abstract <!-- [INSERT GRAPHICAL ABSTRACT TEXT HERE] -->.
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Affiliation(s)
- Chiara Giangrande
- Laboratory of Biological Mass Spectrometry and Proteomics, ESPCI ParisTech, PSL Research University, Paris, France.
- CNRS USR 3149 SMBP, Paris, France.
| | - Nicolas Auberger
- Département de Chimie, École Normale Supérieure-PSL Research University, 24 rue Lhomond, 75005, Paris, France
- Sorbonne Universités, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005, Paris, France
- CNRS, UMR 7203 LBM, F-75005, Paris, France
| | - Cédric Rentier
- Laboratory of Peptide and Protein Chemistry and Biology - PeptLab, Sesto Fiorentino, Italy
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 13, 50019, Sesto Fiorentino, Italy
- PeptLab@UCP Platform and Laboratory of Chemical Biology EA4505, University of Cergy-Pontoise, 5 mail Gay-Lussac, 95031, Cergy-Pontoise CEDEX, France
| | - Anna Maria Papini
- Laboratory of Peptide and Protein Chemistry and Biology - PeptLab, Sesto Fiorentino, Italy
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 13, 50019, Sesto Fiorentino, Italy
- PeptLab@UCP Platform and Laboratory of Chemical Biology EA4505, University of Cergy-Pontoise, 5 mail Gay-Lussac, 95031, Cergy-Pontoise CEDEX, France
| | - Jean-Maurice Mallet
- Département de Chimie, École Normale Supérieure-PSL Research University, 24 rue Lhomond, 75005, Paris, France
- Sorbonne Universités, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005, Paris, France
- CNRS, UMR 7203 LBM, F-75005, Paris, France
| | - Solange Lavielle
- Département de Chimie, École Normale Supérieure-PSL Research University, 24 rue Lhomond, 75005, Paris, France
- Sorbonne Universités, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005, Paris, France
- CNRS, UMR 7203 LBM, F-75005, Paris, France
| | - Joëlle Vinh
- Laboratory of Biological Mass Spectrometry and Proteomics, ESPCI ParisTech, PSL Research University, Paris, France
- CNRS USR 3149 SMBP, Paris, France
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7
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: an update for 2009-2010. MASS SPECTROMETRY REVIEWS 2015; 34:268-422. [PMID: 24863367 PMCID: PMC7168572 DOI: 10.1002/mas.21411] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 07/16/2013] [Accepted: 07/16/2013] [Indexed: 05/07/2023]
Abstract
This review is the sixth update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2010. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, arrays and fragmentation are covered in the first part of the review and applications to various structural typed constitutes the remainder. The main groups of compound that are discussed in this section are oligo and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals. Many of these applications are presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions and applications to chemical synthesis.
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Affiliation(s)
- David J. Harvey
- Department of BiochemistryOxford Glycobiology InstituteUniversity of OxfordOxfordOX1 3QUUK
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8
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Hart PJ, Wey E, McHugh TD, Balakrishnan I, Belgacem O. A method for the detection of antibiotic resistance markers in clinical strains of Escherichia coli using MALDI mass spectrometry. J Microbiol Methods 2015; 111:1-8. [PMID: 25633625 DOI: 10.1016/j.mimet.2015.01.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 01/23/2015] [Accepted: 01/24/2015] [Indexed: 11/25/2022]
Abstract
Matrix-assisted laser-desorption/ionisation time-of-flight mass spectrometry (MALDI-TOF MS) is one of the most widely used mass spectrometry based approaches for bacterial identification and classification. The relatively simple sample preparation requirements and the speed of analysis which can usually be completed within a few minutes have resulted in the adoption and assimilation of MALDI-TOF MS into the routine diagnostic workflow of Clinical microbiology laboratories worldwide. This study describes the facilitation of bacterial discrimination based on antibiotic resistance markers through the implementation of MALDI-TOF MS. The periplasmic compartment of whole bacterial cells contains several proteins which confer antibiotic resistance in the Enterobacteriaceae. In order to reduce the complexity of the sample to be analysed via MALDI-TOF MS, the periplasm was extracted and subjected to in solution tryptic digestion followed by nano-LC separation. This method, established that peptide sequence biomarkers from several classes of antibiotic resistance proteins could be predicted using protein/peptide database tools such as Mascot. Biomarkers for a CTX-M-1 group extended spectrum β-lactamase, CMY-2 an Amp-C β-lactamase, VIM a metallo-β-lactamase, TEM a β-lactamase and KanR an aminoglycoside modifying enzyme were detected. This allowed for discrimination at a species level and at an almost identical strain level where the only difference between strains was the carriage of a modified antibiotic resistance carrying plasmid. This method also was able to detect some of these biomarkers in clinical strains where multiple resistance mechanisms were present.
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Affiliation(s)
- Philippa J Hart
- Shimadzu, Wharfside, Trafford Wharf Road, Manchester M17 1GP, UK
| | | | - Timothy D McHugh
- UCL Centre for Clinical Microbiology, Division of Infection and Immunity, UK
| | | | - Omar Belgacem
- Shimadzu, Wharfside, Trafford Wharf Road, Manchester M17 1GP, UK.
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9
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Arena S, Salzano AM, Renzone G, D'Ambrosio C, Scaloni A. Non-enzymatic glycation and glycoxidation protein products in foods and diseases: an interconnected, complex scenario fully open to innovative proteomic studies. MASS SPECTROMETRY REVIEWS 2014; 33:49-77. [PMID: 24114996 DOI: 10.1002/mas.21378] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 03/09/2013] [Accepted: 03/09/2013] [Indexed: 06/02/2023]
Abstract
The Maillard reaction includes a complex network of processes affecting food and biopharmaceutical products; it also occurs in living organisms and has been strictly related to cell aging, to the pathogenesis of several (chronic) diseases, such as diabetes, uremia, cataract, liver cirrhosis and various neurodegenerative pathologies, as well as to peritoneal dialysis treatment. Dozens of compounds are involved in this process, among which a number of protein-adducted derivatives that have been simplistically defined as early, intermediate and advanced glycation end-products. In the last decade, various bottom-up proteomic approaches have been successfully used for the identification of glycation/glycoxidation protein targets as well as for the characterization of the corresponding adducts, including assignment of the modified amino acids. This article provides an updated overview of the mass spectrometry-based procedures developed to this purpose, emphasizing their partial limits with respect to current proteomic approaches for the analysis of other post-translational modifications. These limitations are mainly related to the concomitant sheer diversity, chemical complexity, and variable abundance of the various derivatives to be characterized. Some challenges to scientists are finally proposed for future proteomic investigations to solve main drawbacks in this research field.
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Affiliation(s)
- Simona Arena
- Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147, Naples, Italy
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10
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Analysis of protein glycation using fluorescent phenylboronate gel electrophoresis. Sci Rep 2013; 3:1437. [PMID: 23531746 PMCID: PMC3609018 DOI: 10.1038/srep01437] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Accepted: 02/04/2013] [Indexed: 11/17/2022] Open
Abstract
Glycated proteins are important biomarkers for age-related disorders, however their analysis is challenging because of the complexity of the protein-carbohydrate adducts. Here we report a method that enables the detection and identification of individual glycated proteins in complex samples using fluorescent boronic acids in gel electrophoresis. Using this method we identified glycated proteins in human serum, insect hemolymph and mouse brain homogenates, confirming this technique as a powerful proteomics tool that can be used for the identification of potential disease biomarkers.
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11
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Lynaugh H, Li H, Gong B. Rapid Fc glycosylation analysis of Fc fusions with IdeS and liquid chromatography mass spectrometry. MAbs 2013; 5:641-5. [PMID: 23839239 DOI: 10.4161/mabs.25302] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
We developed a rapid method to analyze Fc glycosylation of Fc fusion proteins, especially those with mutated Fc hinge regions. Fc fusion proteins were digested with IdeS, an IgG specific protease with exosites for substrate recognition and cleavage. The resultant fragments were directly analyzed through liquid chromatography mass spectrometry. The structures and relative quantities of Fc glycans were deduced from their masses and intensities. The separated substrate recognition and cleavage property of IdeS makes this method applicable to a broad range of Fc fusion proteins having either standard or non-canonical hinge regions.
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Affiliation(s)
- Heather Lynaugh
- GlycoFi; Biologics Discovery; Merck & Co. Inc.; Lebanon, NH USA
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12
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Lopez-Clavijo AF, Barrow MP, Rabbani N, Thornalley PJ, O'Connor PB. Determination of types and binding sites of advanced glycation end products for substance P. Anal Chem 2012; 84:10568-75. [PMID: 23163806 DOI: 10.1021/ac301583d] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Glycation by endogenous dicarbonyl metabolites such as glyoxal is an important spontaneous post-translational (PTM) modification of peptides and proteins associated with structural and functional impairment. The aim of this study was to investigate types and site of PTM of glyoxal-derived advanced glycation end-products-in the neuropeptide substance P by ultrahigh-resolution Fourier transform ion cyclotron resonance (FTICR), mass spectrometry, and tandem mass spectrometry (MS/MS) experiments. The main site of PTM by glyoxal was the side chain guanidine moiety of the arginine residue. Binding site identification has been achieved by electron capture dissociation, double-resonance electron capture dissociation, and collision-activated dissociation, with assignment of the modified amino acid residue with mass error <1 ppm.
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Affiliation(s)
- Andrea F Lopez-Clavijo
- Warwick Centre for Analytical Science, Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
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13
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Montgomery H, Rustogi N, Hadjisavvas A, Tanaka K, Kyriacou K, Sutton CW. Proteomic profiling of breast tissue collagens and site-specific characterization of hydroxyproline residues of collagen alpha-1-(I). J Proteome Res 2012; 11:5890-902. [PMID: 23110299 DOI: 10.1021/pr300656r] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In a quantitative proteomics-based breast cancer study of complementary normal and tumor biopsies, 22 collagen isoforms were detected by LC-MALDI TOF/TOF MS. By applying proline oxidation, representing hydroxyproline, in database search parameters a substantial increase in assigned MS/MS was achieved, boosting the average (three experiments) number of peptides from 306 to 8126 for collagen alpha-1(I). The plethora of peptide identities for alpha-1(I) was disproportionate with full length protein sequence coverage which only increased from 28.3 to 64.4%. The peptides, in fact, constituted an extensive two-dimensional array of isomers exhibiting heterogeneity in degree and location of hydroxyproline residues. A total of 3433 peptides, scores>36 (p<0.01), constituting 94% of the triple helix region of collagen alpha-1(I) provided a census of proline hydroxylation levels defined as the rate of site occupancy for each peptide isomer (r) and the total site occupancy for each proline residue (t). MS/MS and MS/MS/MS analysis, by MALDI-QIT-TOF MS, was used to corroborate site-specific proline hydroxylation of the original data. In addition, iTRAQ data for each collagen isoform in each of 10 patients (grouped by disease) was determined and indicated an increase in fibrillar collagens in invasive carcinoma but little change in fibroadenoma or DCIS.
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Affiliation(s)
- Helen Montgomery
- Koichi Tanaka Research Laboratory, Shimadzu Corporation, Manchester, United Kingdom
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14
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Abstract
Carbohydrate modification of proteins adds complexity and diversity to the proteome. However, undesired carbohydrate modifications also occur in the form of glycation, resulting in diseases such as diabetes, Alzheimer's disease, autoimmune diseases, and cancer. The analysis of glycated proteins is challenging due to their complexity and variability. Numerous analytical techniques have been developed that require expensive specialised equipment and complex data analysis. In this chapter, we describe a simple electrophoresis-based method that enables users to detect, identify, and analyze these post-translational modifications. This new cost-effective methodology will aid the detection of unwanted glycation products in processed foods and may lead to new diagnostics and therapeutics for age-related chronic diseases and glycosylation disorders.
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15
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Guedes S, Vitorino R, Domingues MRM, Amado F, Domingues P. Glycation and oxidation of histones H2B and H1: in vitro study and characterization by mass spectrometry. Anal Bioanal Chem 2011; 399:3529-39. [DOI: 10.1007/s00216-011-4679-y] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Revised: 01/05/2011] [Accepted: 01/11/2011] [Indexed: 12/31/2022]
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16
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Frost L, Chaudhry M, Bell T, Cohenford M. In vitro galactation of human serum albumin: analysis of the protein's galactation sites by mass spectrometry. Anal Biochem 2010; 410:248-56. [PMID: 21112314 DOI: 10.1016/j.ab.2010.11.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Revised: 11/12/2010] [Accepted: 11/18/2010] [Indexed: 11/17/2022]
Abstract
The posttranslational modification of proteins by sugars has been demonstrated in diabetes and classical galactosemia. In diabetes, the glycation process occurs as a result of d-glucose nonenzymatically reacting with proteins such as albumin and hemoglobin, used today as important tools to monitor the efficiency of dietary control and therapy during treatment of diabetes. In classical galactosemia, d-galactose contributes to the formation of glycated proteins as well, suggesting that, akin to diabetes with glucated proteins, the monitoring of galactated proteins may facilitate management of patients with galactosemia. The objectives of this study were (i) to galactate human serum albumin (HSA) in vitro; (ii) to determine, by a sodium borohydride-dependent mass peptide mapping method, the galactation sites in HSA; and (iii) to compare HSA's galactation sites with the protein's reported glucation sites. Treatment of galactated HSA with sodium borohydride stabilized the condensed sugars on the protein and yielded discrete fragmentation patterns by tandem mass spectrometry, allowing reliable identification of HSA's galactation sites. Liquid chromatography/electrospray ionization/mass spectrometry, in combination with tandem mass spectrometry, revealed that the principal sites of galactation in HSA were the ε-amino groups of lysine residues 12, 233, 281/276, 414, and 525. Lysyl residues 12, 233, 276, and 525 were previously reported as privileged sites for the nonenzymatic binding of d-glucose with HSA.
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Affiliation(s)
- Leslie Frost
- Department of Chemistry, Marshall University, Huntington, WV 25755, USA
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