1
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Pál D, Tóth G, Turiák L. Investigation of sample handling steps for accurate heparan sulphate disaccharide analysis using HPLC-MS. Electrophoresis 2024. [PMID: 39166784 DOI: 10.1002/elps.202400091] [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: 04/30/2024] [Revised: 08/05/2024] [Accepted: 08/09/2024] [Indexed: 08/23/2024]
Abstract
Heparan sulphates (HSs), a specific class of glycosaminoglycans (GAGs), are important participants of cellular signalling. Analytical characterization of GAGs requires a complex sample preparation workflow. Although a detailed stability and recovery study is available for the chondroitin sulphate GAG class, the literature concerning HS is incomplete in this regard. Therefore, our aim was to systematically investigate various parameters that could potentially influence the stability and recovery of HS samples when performing disaccharide analysis using high-performance liquid chromatography-mass spectrometry. First, effects concerning vacuum evaporation and freezing were investigated. Next, the storage stability of the HS disaccharides was analysed under several conditions such as temperature, pH, digestion buffers, injection solvents and storage vessels. We have identified several critical parameters influencing the stability and recovery of HS disaccharides. We concluded that major sample loss is expected when Tris-HCl is used as digestion buffer, followed by vacuum evaporation at elevated temperatures, or samples are stored under alkaline conditions. Following the practical considerations of this paper can contribute to increasing the reliability of future analytical measurements.
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Affiliation(s)
- Domonkos Pál
- MTA-TTK Lendület (Momentum) Glycan Biomarker Research Group, Institute of Organic Chemistry, HUN-REN Research Centre for Natural Sciences, Budapest, Hungary
- Doctoral School, Semmelweis University, Budapest, Hungary
| | - Gábor Tóth
- BMC Department of Chemistry, Uppsala University, Uppsala, Sweden
| | - Lilla Turiák
- MTA-TTK Lendület (Momentum) Glycan Biomarker Research Group, Institute of Organic Chemistry, HUN-REN Research Centre for Natural Sciences, Budapest, Hungary
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2
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Antia IU, Hills FA, Shah AJ. Disaccharide compositional analysis of chondroitin sulphate using WAX HILIC-MS with pre-column procainamide labelling; application to the placenta in pre-eclampsia. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:566-575. [PMID: 38189556 DOI: 10.1039/d3ay01578e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Chondroitin sulphate (CS) and dermatan sulphate are negatively charged linear heteropolysaccharides. These glycosaminoglycans (GAG) are involved in cellular signalling via binding to growth factors. CS is expressed in a range of tissue and biological fluids and is highly expressed in the placenta. There is evidence that decorin; a CS proteoglycan is significantly decreased in pre-eclampsia and fetal growth restriction. It is considered that GAG chain composition may influence cellular processes that are altered in pre-eclampsia. The goal of the present study was to develop an LC-MS method with precolumn procainamide labelling for the disaccharide compositional analysis of CS. The method was used to investigate whether the disaccharide composition of placenta-extracted CS is altered in pre-eclampsia. The study revealed differential disaccharide compositions of placental chondroitin sulphate between pre-eclampsia and other pregnancy conditions. This suggests that the method may have diagnostic potential for pregnancy disorders. Furthermore, the findings suggest that CS sulphation might play a significant role in maternal labour.
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Affiliation(s)
- Imeobong U Antia
- Glycan Research Group, Department of Natural Sciences, Faculty of Science and Technology, Middlesex University, London, UK.
| | - Frank A Hills
- Glycan Research Group, Department of Natural Sciences, Faculty of Science and Technology, Middlesex University, London, UK.
| | - Ajit J Shah
- Glycan Research Group, Department of Natural Sciences, Faculty of Science and Technology, Middlesex University, London, UK.
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3
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Balbisi M, Sugár S, Schlosser G, Szeitz B, Fillinger J, Moldvay J, Drahos L, Szász AM, Tóth G, Turiák L. Inter- and intratumoral proteomics and glycosaminoglycan characterization of ALK rearranged lung adenocarcinoma tissues: a pilot study. Sci Rep 2023; 13:6268. [PMID: 37069213 PMCID: PMC10110559 DOI: 10.1038/s41598-023-33435-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 04/12/2023] [Indexed: 04/19/2023] Open
Abstract
Lung cancer is one of the most common types of cancer with limited therapeutic options, therefore a detailed understanding of the underlying molecular changes is of utmost importance. In this pilot study, we investigated the proteomic and glycosaminoglycan (GAG) profile of ALK rearranged lung tumor tissue regions based on the morphological classification, mucin and stromal content. Principal component analysis and hierarchical clustering revealed that both the proteomic and GAG-omic profiles are highly dependent on mucin content and to a lesser extent on morphology. We found that differentially expressed proteins between morphologically different tumor types are primarily involved in the regulation of protein synthesis, whereas those between adjacent normal and different tumor regions take part in several other biological processes (e.g. extracellular matrix organization, oxidation-reduction processes, protein folding) as well. The total amount and the sulfation profile of heparan sulfate and chondroitin sulfate showed small differences based on morphology and larger differences based on mucin content of the tumor, while an increase was observed in both the total amount and the average rate of sulfation in tumors compared to adjacent normal regions.
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Affiliation(s)
- Mirjam Balbisi
- MS Proteomics Research Group, Research Centre for Natural Sciences, Magyar Tudósok körútja 2., Budapest, 1117, Hungary
- Doctoral School of Pharmaceutical Sciences, Semmelweis University, Üllői út 26., Budapest, 1085, Hungary
| | - Simon Sugár
- MS Proteomics Research Group, Research Centre for Natural Sciences, Magyar Tudósok körútja 2., Budapest, 1117, Hungary
- Doctoral School of Pharmaceutical Sciences, Semmelweis University, Üllői út 26., Budapest, 1085, Hungary
| | - Gitta Schlosser
- MTA-ELTE Lendület Ion Mobility Mass Spectrometry Research Group, Eötvös Loránd University, Pázmány Péter sétány 1, Budapest, 1117, Hungary
| | - Beáta Szeitz
- Division of Oncology, Department of Internal Medicine and Oncology, Semmelweis University, Üllői út 26., Budapest, 1085, Hungary
| | - János Fillinger
- Department of Pathology, National Korányi Institute of Pulmonology, Korányi Frigyes út 1., Budapest, 1121, Hungary
| | - Judit Moldvay
- 1st Department of Pulmonology, National Korányi Institute of Pulmonology, Korányi Frigyes út 1., Budapest, 1121, Hungary
| | - László Drahos
- MS Proteomics Research Group, Research Centre for Natural Sciences, Magyar Tudósok körútja 2., Budapest, 1117, Hungary
| | - A Marcell Szász
- Division of Oncology, Department of Internal Medicine and Oncology, Semmelweis University, Üllői út 26., Budapest, 1085, Hungary
| | - Gábor Tóth
- MS Proteomics Research Group, Research Centre for Natural Sciences, Magyar Tudósok körútja 2., Budapest, 1117, Hungary.
| | - Lilla Turiák
- MS Proteomics Research Group, Research Centre for Natural Sciences, Magyar Tudósok körútja 2., Budapest, 1117, Hungary.
- Doctoral School of Pharmaceutical Sciences, Semmelweis University, Üllői út 26., Budapest, 1085, Hungary.
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4
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Pál D, Tóth G, Sugár S, Fügedi KD, Szabó D, Kovalszky I, Papp D, Schlosser G, Tóth C, Tornóczky T, Drahos L, Turiák L. Compositional Analysis of Glycosaminoglycans in Different Lung Cancer Types-A Pilot Study. Int J Mol Sci 2023; 24:ijms24087050. [PMID: 37108213 PMCID: PMC10138872 DOI: 10.3390/ijms24087050] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/26/2023] [Accepted: 04/08/2023] [Indexed: 04/29/2023] Open
Abstract
Lung cancer is one of the most commonly diagnosed cancer types. Studying the molecular changes that occur in lung cancer is important to understand tumor formation and identify new therapeutic targets and early markers of the disease to decrease mortality. Glycosaminoglycan chains play important roles in various signaling events in the tumor microenvironment. Therefore, we have determined the quantity and sulfation characteristics of chondroitin sulfate and heparan sulfate in formalin-fixed paraffin-embedded human lung tissue samples belonging to different lung cancer types as well as tumor adjacent normal areas. Glycosaminoglycan disaccharide analysis was performed using HPLC-MS following on-surface lyase digestion. Significant changes were identified predominantly in the case of chondroitin sulfate; for example, the total amount was higher in tumor tissue compared to the adjacent normal tissue. We also observed differences in the degree of sulfation and relative proportions of individual chondroitin sulfate disaccharides between lung cancer types and adjacent normal tissue. Furthermore, the differences in the 6-O-/4-O-sulfation ratio of chondroitin sulfate were different between the lung cancer types. Our pilot study revealed that further investigation of the role of chondroitin sulfate chains and enzymes involved in their biosynthesis is an important aspect of lung cancer research.
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Affiliation(s)
- Domonkos Pál
- MS Proteomics Research Group, Research Centre for Natural Sciences, H-1117 Budapest, Hungary
- Doctoral School of Pharmaceutical Sciences, Semmelweis University, H-1085 Budapest, Hungary
| | - Gábor Tóth
- MS Proteomics Research Group, Research Centre for Natural Sciences, H-1117 Budapest, Hungary
| | - Simon Sugár
- MS Proteomics Research Group, Research Centre for Natural Sciences, H-1117 Budapest, Hungary
- Doctoral School of Pharmaceutical Sciences, Semmelweis University, H-1085 Budapest, Hungary
| | - Kata Dorina Fügedi
- MS Proteomics Research Group, Research Centre for Natural Sciences, H-1117 Budapest, Hungary
- Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, H-1111 Budapest, Hungary
| | - Dániel Szabó
- MS Proteomics Research Group, Research Centre for Natural Sciences, H-1117 Budapest, Hungary
| | - Ilona Kovalszky
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, H-1085 Budapest, Hungary
| | - Dávid Papp
- MTA-ELTE Lendület Ion Mobility Mass Spectrometry Research Group, ELTE Eötvös Loránd University, H-1117 Budapest, Hungary
- Hevesy György PhD School of Chemistry, ELTE Eötvös Loránd University, H-1117 Budapest, Hungary
| | - Gitta Schlosser
- MTA-ELTE Lendület Ion Mobility Mass Spectrometry Research Group, ELTE Eötvös Loránd University, H-1117 Budapest, Hungary
| | - Csaba Tóth
- Teaching Hospital Markusovszky, University of Pécs, H-9700 Szombathely, Hungary
| | - Tamás Tornóczky
- Department of Pathology, Faculty of Medicine and Clinical Center, University of Pécs, H-7624 Pécs, Hungary
| | - László Drahos
- MS Proteomics Research Group, Research Centre for Natural Sciences, H-1117 Budapest, Hungary
| | - Lilla Turiák
- MS Proteomics Research Group, Research Centre for Natural Sciences, H-1117 Budapest, Hungary
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5
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Tóth G, Turiák L. HPLC-MS Characterization of Tissue-Derived Heparan Sulfate and Chondroitin Sulfate. Methods Mol Biol 2023; 2619:71-90. [PMID: 36662463 DOI: 10.1007/978-1-0716-2946-8_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Glycosaminoglycans (GAGs) are built up of repeating disaccharide units resulting in long, linear polysaccharide chains. In most classes of GAGs, sulfation and epimerization complicate the structure of the chain and influence biochemical functions. The most widespread way of their investigation by instrumental analytical techniques is to degrade them into the constituent disaccharide building blocks, followed by capillary electrophoresis or high-performance liquid chromatography (HPLC) separation. The analysis of GAG disaccharides with varying sulfation degrees poses a real challenge both from chromatographic and mass spectrometric (MS) points of view. This necessitates the constant improvement of their analytical methodology. In this chapter, an optimized workflow will be discussed for the sample preparation and subsequent HPLC-MS characterization of tissue-derived chondroitin sulfate and heparan sulfate.
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Affiliation(s)
- Gábor Tóth
- MS Proteomics Research Group, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Budapest, Hungary
| | - Lilla Turiák
- MS Proteomics Research Group, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Budapest, Hungary.
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6
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Zappe A, Miller RL, Struwe WB, Pagel K. State-of-the-art glycosaminoglycan characterization. MASS SPECTROMETRY REVIEWS 2022; 41:1040-1071. [PMID: 34608657 DOI: 10.1002/mas.21737] [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] [Received: 03/16/2021] [Revised: 08/02/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
Glycosaminoglycans (GAGs) are heterogeneous acidic polysaccharides involved in a range of biological functions. They have a significant influence on the regulation of cellular processes and the development of various diseases and infections. To fully understand the functional roles that GAGs play in mammalian systems, including disease processes, it is essential to understand their structural features. Despite having a linear structure and a repetitive disaccharide backbone, their structural analysis is challenging and requires elaborate preparative and analytical techniques. In particular, the extent to which GAGs are sulfated, as well as variation in sulfate position across the entire oligosaccharide or on individual monosaccharides, represents a major obstacle. Here, we summarize the current state-of-the-art methodologies used for GAG sample preparation and analysis, discussing in detail liquid chromatograpy and mass spectrometry-based approaches, including advanced ion activation methods, ion mobility separations and infrared action spectroscopy of mass-selected species.
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Affiliation(s)
- Andreas Zappe
- Department of Biology, Chemistry and Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - Rebecca L Miller
- Department of Cellular and Molecular Medicine, Copenhagen Centre for Glycomics, University of Copenhagen, Copenhagen, Denmark
| | | | - Kevin Pagel
- Department of Biology, Chemistry and Pharmacy, Freie Universität Berlin, Berlin, Germany
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7
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Urbi Z, Azmi NS, Ming LC, Hossain MS. A Concise Review of Extraction and Characterization of Chondroitin Sulphate from Fish and Fish Wastes for Pharmacological Application. Curr Issues Mol Biol 2022; 44:3905-3922. [PMID: 36135180 PMCID: PMC9497668 DOI: 10.3390/cimb44090268] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/20/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
Chondroitin sulphate (CS) is one of the most predominant glycosaminoglycans (GAGs) available in the extracellular matrix of tissues. It has many health benefits, including relief from osteoarthritis, antiviral properties, tissue engineering applications, and use in skin care, which have increased its commercial demand in recent years. The quest for CS sources exponentially increased due to several shortcomings of porcine, bovine, and other animal sources. Fish and fish wastes (i.e., fins, scales, skeleton, bone, and cartilage) are suitable sources of CS as they are low cost, easy to handle, and readily available. However, the lack of a standard isolation and characterization technique makes CS production challenging, particularly concerning the yield of pure GAGs. Many studies imply that enzyme-based extraction is more effective than chemical extraction. Critical evaluation of the existing extraction, isolation, and characterization techniques is crucial for establishing an optimized protocol of CS production from fish sources. The current techniques depend on tissue hydrolysis, protein removal, and purification. Therefore, this study critically evaluated and discussed the extraction, isolation, and characterization methods of CS from fish or fish wastes. Biosynthesis and pharmacological applications of CS were also critically reviewed and discussed. Our assessment suggests that CS could be a potential drug candidate; however, clinical studies should be conducted to warrant its effectiveness.
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Affiliation(s)
- Zannat Urbi
- Department of Industrial Biotechnology, Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang, Kuantan 26300, Malaysia
| | - Nina Suhaity Azmi
- Department of Industrial Biotechnology, Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang, Kuantan 26300, Malaysia
- Correspondence: (N.S.A.); (M.S.H.); Tel.: +60-12798-0497 (N.S.A.); +60-116960-9649 (M.S.H.)
| | - Long Chiau Ming
- PAP Rashidah Sa’adatul Bolkiah Institute of Health Sciences, Universiti Brunei Darussalam, Gadong BE1410, Brunei
| | - Md. Sanower Hossain
- Department of Biomedical Science, Kulliyyah of Allied Health Sciences, International Islamic University Malaysia, Kuantan 25200, Malaysia
- Faculty of Science, Sristy College of Tangail, Tangail 1900, Bangladesh
- Correspondence: (N.S.A.); (M.S.H.); Tel.: +60-12798-0497 (N.S.A.); +60-116960-9649 (M.S.H.)
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8
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Tóth G, Pál D, Sugár S, Kovalszky I, Dezső K, Schlosser G, Drahos L, Turiák L. Expression of glycosaminoglycans in cirrhotic liver and hepatocellular carcinoma-a pilot study including etiology. Anal Bioanal Chem 2022; 414:3837-3846. [PMID: 35344068 PMCID: PMC8958808 DOI: 10.1007/s00216-022-04025-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 03/08/2022] [Accepted: 03/15/2022] [Indexed: 11/25/2022]
Abstract
Chronic liver diseases have both high incidence and mortality rates; therefore, a deeper understanding of the underlying molecular mechanisms is essential. We have determined the content and sulfation pattern of chondroitin sulfate (CS) and heparan sulfate (HS) in human hepatocellular carcinoma and cirrhotic liver tissues, considering the etiology of the diseases. A variety of pathological conditions such as alcoholic liver disease, hepatitis B and C virus infections, and primary sclerosing cholangitis were studied. Major differences were observed in the total abundance and sulfation pattern of CS and HS chains. For example, the 6-O-sulfation of CS is fundamentally different regarding etiologies of cirrhosis, and a 2-threefold increase in HS N-sulfation/O-sulfation ratio was observed in hepatocellular carcinoma compared to cirrhotic tissues.
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Affiliation(s)
- Gábor Tóth
- MS Proteomics Research Group, Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117, Budapest, Hungary.,Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szent Gellért tér 4, 1111, Budapest, Hungary
| | - Domonkos Pál
- MS Proteomics Research Group, Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117, Budapest, Hungary
| | - Simon Sugár
- MS Proteomics Research Group, Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117, Budapest, Hungary.,Ph.D. School of Pharmaceutical Sciences, Semmelweis University, Üllői út 26, 1085, Budapest, Hungary
| | - Ilona Kovalszky
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, 1085, Budapest, Hungary
| | - Katalin Dezső
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, 1085, Budapest, Hungary
| | - Gitta Schlosser
- MTA-ELTE Lendület Ion Mobility Mass Spectrometry Research Group, Eötvös Loránd University, Pázmány Péter sétány 1, 1117, Budapest, Hungary
| | - László Drahos
- MS Proteomics Research Group, Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117, Budapest, Hungary
| | - Lilla Turiák
- MS Proteomics Research Group, Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117, Budapest, Hungary.
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9
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Poyer S, Seffouh I, Lopin-Bon C, Jacquinet JC, Neira JL, Salpin JY, Daniel R. Discrimination of sulfated isomers of chondroitin sulfate disaccharides by HILIC-MS. Anal Bioanal Chem 2021; 413:7107-7117. [PMID: 34651208 DOI: 10.1007/s00216-021-03679-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/09/2021] [Accepted: 09/20/2021] [Indexed: 11/29/2022]
Abstract
Chondroitin sulfate (CS) glycosaminoglycans are biologically active sulfated polysaccharides that pose an analytical challenge for their structural analysis and functional evaluation. In this study, we developed a hydrophilic interaction liquid chromatography separation method and its on-line coupling to mass spectrometry (MS) allowing efficient differentiation and sensitive detection of mono-, di-, and trisulfated CS disaccharides and their positional isomers, without requiring prior derivatization. The composition of the mobile phase in terms of pH and concentration showed great influence on the chromatographic separation and was varied to allow the distinction of each CS without signal overlap for a total analysis time of 25 min. This methodology was applied to determine the disaccharide composition of biological reaction media resulting from various enzymatic transformations of CS, such as enzymatic desulfation of CS disaccharides by a CS 4-O-endosulfatase, and depolymerization of the CS endocan by chondroitinase lyase ABC.
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Affiliation(s)
- Salomé Poyer
- Université Paris-Saclay, CNRS, Univ Evry, LAMBE, 91025, Evry-Courcouronnes, France.
- CY Cergy Paris Université, LAMBE, 91025, Evry-Courcouronnes, France.
| | - Ilham Seffouh
- Université Paris-Saclay, CNRS, Univ Evry, LAMBE, 91025, Evry-Courcouronnes, France
- CY Cergy Paris Université, LAMBE, 91025, Evry-Courcouronnes, France
| | | | | | - José L Neira
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernandez, Elche, Alicante, Spain
| | - Jean-Yves Salpin
- Université Paris-Saclay, CNRS, Univ Evry, LAMBE, 91025, Evry-Courcouronnes, France
- CY Cergy Paris Université, LAMBE, 91025, Evry-Courcouronnes, France
| | - Régis Daniel
- Université Paris-Saclay, CNRS, Univ Evry, LAMBE, 91025, Evry-Courcouronnes, France.
- CY Cergy Paris Université, LAMBE, 91025, Evry-Courcouronnes, France.
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Tóth G, Pál D, Vékey K, Drahos L, Turiák L. Stability and recovery issues concerning chondroitin sulfate disaccharide analysis. Anal Bioanal Chem 2021; 413:1779-1785. [PMID: 33506337 PMCID: PMC7925331 DOI: 10.1007/s00216-021-03152-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/04/2021] [Indexed: 11/09/2022]
Abstract
Chondroitin sulfate (CS) is a widely studied class of glycosaminoglycans, responsible for diverse biological functions. Structural analysis of CS is generally based on disaccharide analysis. Sample preparation is a key analytical issue in this case. However, a detailed study on the stability and recovery of CS-derived species has been lacking so far. We have found that for solvent exchange, in general, vacuum evaporation (SpeedVac) is much preferable than lyophilization. Moreover, in the case of aqueous solutions, higher recovery was experienced than in solutions with high organic solvent content. Storage of the resulting disaccharide mixture in typical HPLC injection solvents is also critical; decomposition starts after 12 h at 4 °C; therefore, the mixtures should not be kept in the sample tray of an automatic injector for a long time. The study, therefore, lays down suggestions on proper sample preparation and measurement conditions for biologically derived chondroitin sulfate species.
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Affiliation(s)
- Gábor Tóth
- MS Proteomics Research Group, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Budapest, 1117, Hungary
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Budapest, 1111, Hungary
| | - Domonkos Pál
- MS Proteomics Research Group, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Budapest, 1117, Hungary
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Budapest, 1111, Hungary
| | - Károly Vékey
- MS Proteomics Research Group, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Budapest, 1117, Hungary
| | - László Drahos
- MS Proteomics Research Group, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Budapest, 1117, Hungary
| | - Lilla Turiák
- MS Proteomics Research Group, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Budapest, 1117, Hungary.
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