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Trbojević-Akmačić I, Vučković F, Pribić T, Vilaj M, Černigoj U, Vidič J, Šimunović J, Kępka A, Kolčić I, Klarić L, Novokmet M, Pučić-Baković M, Rapp E, Štrancar A, Polašek O, Wilson JF, Lauc G. Comparative analysis of transferrin and IgG N-glycosylation in two human populations. Commun Biol 2023; 6:312. [PMID: 36959410 PMCID: PMC10036557 DOI: 10.1038/s42003-023-04685-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 03/09/2023] [Indexed: 03/25/2023] Open
Abstract
Human plasma transferrin (Tf) N-glycosylation has been mostly studied as a marker for congenital disorders of glycosylation, alcohol abuse, and hepatocellular carcinoma. However, inter-individual variability of Tf N-glycosylation is not known, mainly due to technical limitations of Tf isolation in large-scale studies. Here, we present a highly specific robust high-throughput approach for Tf purification from human blood plasma and detailed characterization of Tf N-glycosylation on the level of released glycans by ultra-high-performance liquid chromatography based on hydrophilic interactions and fluorescence detection (HILIC-UHPLC-FLD), exoglycosidase sequencing, and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS). We perform a large-scale comparative study of Tf and immunoglobulin G (IgG) N-glycosylation analysis in two human populations and demonstrate that Tf N-glycosylation is associated with age and sex, along with multiple biochemical and physiological traits. Observed association patterns differ compared to the IgG N-glycome corroborating tissue-specific N-glycosylation and specific N-glycans' role in their distinct physiological functions.
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Affiliation(s)
| | | | - Tea Pribić
- Genos Glycoscience Research Laboratory, Zagreb, Croatia
| | - Marija Vilaj
- Genos Glycoscience Research Laboratory, Zagreb, Croatia
| | - Urh Černigoj
- BIA Separations d.o.o., a Sartorius company, Ajdovščina, Slovenia
| | - Jana Vidič
- BIA Separations d.o.o., a Sartorius company, Ajdovščina, Slovenia
| | | | - Agnieszka Kępka
- Genos Glycoscience Research Laboratory, Zagreb, Croatia
- Department of Immunology, Faculty of Biology, Institute of Zoology, University of Warsaw, Warsaw, Poland
| | - Ivana Kolčić
- Department of Public Health, University of Split School of Medicine, Split, Croatia
- Algebra University College, Zagreb, Croatia
| | - Lucija Klarić
- MRC Human Genetics Unit, Institute for Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | | | | | - Erdmann Rapp
- Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany
- glyXera GmbH, Magdeburg, Germany
| | - Aleš Štrancar
- BIA Separations d.o.o., a Sartorius company, Ajdovščina, Slovenia
| | - Ozren Polašek
- Department of Public Health, University of Split School of Medicine, Split, Croatia
- Algebra University College, Zagreb, Croatia
| | - James F Wilson
- MRC Human Genetics Unit, Institute for Genetics and Cancer, University of Edinburgh, Edinburgh, UK
- Centre for Global Health Research, Usher Institute, University of Edinburgh, Edinburgh, UK
| | - Gordan Lauc
- Genos Glycoscience Research Laboratory, Zagreb, Croatia.
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia.
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Yang B, Mai TD, Tran NT, Taverna M. In capillary labeling and online electrophoretic separation of N-glycans from glycoproteins. J Sep Sci 2022; 45:3594-3603. [PMID: 35820058 PMCID: PMC9796131 DOI: 10.1002/jssc.202200340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/16/2022] [Accepted: 07/07/2022] [Indexed: 01/01/2023]
Abstract
In this study, we present a new approach for in-capillary fluorescent labeling of N-glycans prior to their analysis with CE coupled with laser-induced fluorescent detection. This integrated approach allows using a CE capillary as a microreactor to perform several steps required for labeling glycans with 8-aminopyrene-1,3,6 trisulfonic acid and at the same time as a separation channel for CE of fluorescently labeled glycans. This could be achieved through careful optimization of all different steps, including sequential injections of fluorescent dye and glycan plugs, mixing by transverse diffusion of laminar flow profiles, incubation in a thermostatic zone, and finally separation and detection with CE. Such a complex sample treatment protocol for glycan labeling that is feasible thus far only in batchwise mode can now be converted into an automated and integrated protocol. Our approach was applied successfully to analyze fluorescently labeled N-linked oligosaccharides released from human immunoglobulin G and rituximab, a monoclonal antibody used for cancer treatment. We demonstrated the superiority of this in-capillary approach over the conventional in-tube protocol, with fourfold less reagent consumption and full automation without remarkable degradation of the glycan separation profile obtained by capillary electrophoresis.
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Affiliation(s)
- Bin Yang
- Université Paris‐Saclay, CNRS, Faculté de PharmacieInstitut Galien Paris‐SaclayBâtiment Henri Moissan, 17 Avenue des SciencesOrsay91400France
| | - Thanh Duc Mai
- Université Paris‐Saclay, CNRS, Faculté de PharmacieInstitut Galien Paris‐SaclayBâtiment Henri Moissan, 17 Avenue des SciencesOrsay91400France
| | - Nguyet Thuy Tran
- Université Paris‐Saclay, CNRS, Faculté de PharmacieInstitut Galien Paris‐SaclayBâtiment Henri Moissan, 17 Avenue des SciencesOrsay91400France
| | - Myriam Taverna
- Université Paris‐Saclay, CNRS, Faculté de PharmacieInstitut Galien Paris‐SaclayBâtiment Henri Moissan, 17 Avenue des SciencesOrsay91400France,Institut Universitaire de France (IUF)ParisFrance
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3
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Liénard--Mayor T, Bricteux C, Bendali A, Tran NT, Bruneel A, Taverna M, Mai TD. Lab-in-droplet: From glycan sample treatment toward diagnostic screening of congenital disorders of glycosylation. Anal Chim Acta 2022; 1221:340150. [DOI: 10.1016/j.aca.2022.340150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 06/09/2022] [Accepted: 07/04/2022] [Indexed: 11/29/2022]
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4
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Liénard-Mayor T, Yang B, Tran NT, Bruneel A, Guttman A, Taverna M, Mai TD. High sensitivity capillary electrophoresis with fluorescent detection for glycan mapping. J Chromatogr A 2021; 1657:462593. [PMID: 34689907 DOI: 10.1016/j.chroma.2021.462593] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/22/2021] [Accepted: 09/28/2021] [Indexed: 11/16/2022]
Abstract
We present in this study a novel strategy to drastically improve the detection sensitivity and peak capacity for capillary electrophoresis with laser induced fluorescent detection (CE-LIF) of glucose oligomers and released glycans. This is based on a new approach exploiting a polymer-free background electrolyte (BGE) for CE-LIF of glycans. The best performance in terms of sample stacking and suppression of electroosmotic flow (EOF) was found for a BGE composed of triethanolamine/citric acid and triethanolamine/acetic acid at elevated ionic strengths (IS up to 200 mM). Compared to the conventional protocols for CE-LIF of glucose-oligosaccharides and released glycans, our polymer-free strategy offered up to 5-fold improvement of detection sensitivity and visualization of higher degree of polymerization (DP) of glucose oligomers (18 vs 15). To further improve the detection sensitivity, a new electrokinetic preconcentration strategy via large volume sample stacking with electroosmotic modulation without having recourse to neutrally coated capillaries is proposed, offering a 200-fold signal enhancement. This approach is based on variation of the buffer's IS, rather than pH adjustment as in conventional methods, for EOF modulation or quasi-total reduction. This strategy allows selecting with high flexibility the best pH conditions to perform efficient preconcentration and separation. The new approach was demonstrated to be applicable for the analysis of N-linked oligosaccharides released from a model glycoprotein (Human Immunoglobulin G) and applied to map N-glycans from human serum for congenital disorders of glycosylation (CDG) diagnosis.
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Affiliation(s)
- Théo Liénard-Mayor
- Institut Galien Paris Sud, UMR 8612, Protein and Nanotechnology in Analytical Science (PNAS), CNRS, Univ. Paris-Sud, Univ. Paris-Saclay, 5 rue Jean Baptiste Clément, 92290 Châtenay-Malabry, France
| | - Bin Yang
- Institut Galien Paris Sud, UMR 8612, Protein and Nanotechnology in Analytical Science (PNAS), CNRS, Univ. Paris-Sud, Univ. Paris-Saclay, 5 rue Jean Baptiste Clément, 92290 Châtenay-Malabry, France
| | - Nguyet Thuy Tran
- Institut Galien Paris Sud, UMR 8612, Protein and Nanotechnology in Analytical Science (PNAS), CNRS, Univ. Paris-Sud, Univ. Paris-Saclay, 5 rue Jean Baptiste Clément, 92290 Châtenay-Malabry, France
| | - Arnaud Bruneel
- Université Paris-Saclay, INSERM UMR1193, Mécanismes cellulaires et moléculaires de l'adaptation au stress et cancérogenèse, Châtenay-Malabry, France; AP-HP, Biochimie Métabolique et Cellulaire, Hôpital Bichat-Claude Bernard, Paris, France
| | - Andras Guttman
- Translational Glycomics Research Group, Research Institute of Biomolecular and Chemical Engineering, University of Pannonia, 10 Egyetem Street, Veszprem 8200, Hungary; Horváth Csaba Laboratory of Bioseparation Sciences, Research Centre for Molecular Medicine, Faculty of Medicine, University of Debrecen, 98 Nagyerdei Krt, Debrecen, 4032, Hungary
| | - Myriam Taverna
- Institut Galien Paris Sud, UMR 8612, Protein and Nanotechnology in Analytical Science (PNAS), CNRS, Univ. Paris-Sud, Univ. Paris-Saclay, 5 rue Jean Baptiste Clément, 92290 Châtenay-Malabry, France; Institut Universitaire de France (IUF)
| | - Thanh Duc Mai
- Institut Galien Paris Sud, UMR 8612, Protein and Nanotechnology in Analytical Science (PNAS), CNRS, Univ. Paris-Sud, Univ. Paris-Saclay, 5 rue Jean Baptiste Clément, 92290 Châtenay-Malabry, France.
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Wada Y. Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry to Detect Diagnostic Glycopeptide Markers of Congenital Disorders of Glycosylation. ACTA ACUST UNITED AC 2020; 9:A0084. [PMID: 32547898 PMCID: PMC7242785 DOI: 10.5702/massspectrometry.a0084] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 03/04/2020] [Indexed: 12/04/2022]
Abstract
Congenital disorders of glycosylation (CDG), an increasingly recognized group of diseases that affect glycosylation, comprise the largest known subgroup of approximately 100 responsible genes related to N-glycosylation. This subgroup presents various molecular abnormalities, of either the CDG-I or the CDG-II type, attributable to a lack of glycans or abnormal glycoform profiles, respectively. The most effective approach to identifying these N-glycosylation disorders is mass spectrometry (MS) using either released glycans, intact glycoproteins or proteolytic peptides as analytes. Among these, MS of tryptic peptides derived from transferrin can be used to reliably identify signature peptides that are characteristic of CDG-I and II. In the present study, matrix-assisted laser desorption/ionization (MALDI) MS was applied to various N-glycosylation disorders including ALG1-CDG, B4GALT1-CDG, SLC35A2-CDG, ATP6V0A2-CDG, TRAPPC11-CDG and MAN1B1-CDG. This method does not require the prior enrichment of glycopeptides or chromatographic separation, and thus serves as a practical alternative to liquid chromatography-electrospray ionization MS. The signature peptides are biomarkers of CDG.
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Affiliation(s)
- Yoshinao Wada
- Osaka Women's and Children's Hospital (OWCH), 840 Murodo-cho, Izumi, Osaka 594-1101, Japan
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Fernandes MA, Hanck-Silva G, Baveloni FG, Oshiro Junior JA, de Lima FT, Eloy JO, Chorilli M. A Review of Properties, Delivery Systems and Analytical Methods for the Characterization of Monomeric Glycoprotein Transferrin. Crit Rev Anal Chem 2020; 51:399-410. [DOI: 10.1080/10408347.2020.1743639] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Mariza Aires Fernandes
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Gilmar Hanck-Silva
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Franciele Garcia Baveloni
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | | | - Felipe Tita de Lima
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Josimar O. Eloy
- College of Pharmacy, Dentistry and Nursing, Federal University of Ceara (UFC), Fortaleza, Ceará, Brazil
| | - Marlus Chorilli
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
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Analysis of glycopeptide biomarkers by on-line TiO 2 solid-phase extraction capillary electrophoresis-mass spectrometry. Talanta 2019; 209:120563. [PMID: 31892091 DOI: 10.1016/j.talanta.2019.120563] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 11/04/2019] [Accepted: 11/12/2019] [Indexed: 12/15/2022]
Abstract
In this study is described an on-line titanium dioxide solid-phase extraction capillary electrophoresis-mass spectrometry (TiO2-SPE-CE-MS) method for the analysis of the glycopeptide glycoforms obtained from the tryptic digests of recombinant human erythropoietin (rhEPO). The O126-glycopeptide of rhEPO was used to optimize the methodology given its importance in quality control of biopharmaceuticals and doping analysis. Several aspects that affect the selective retention and elution, peak efficiency and electrophoretic separation of the O126 glycoforms were investigated to maximize detection sensitivity while minimizing non-specific retention of peptides. Under the optimized conditions, the microcartridge lifetime was around 10 analyses and repeatability was acceptable (%RSD values of 9-11% and 6-11% for migration times and peak areas, respectively). The method was linear between 0.5 and 50 mg L-1 and 10-50 mg L-1 for O126 glycoforms containing NeuAc and NeuGc, respectively, and limits of detection (LODs) were up to 100 times lower than by CE-MS. Although optimized for O-glycopeptides, the method proved also successful for preconcentration of N83-glycopeptides, without compromising the separation between glycopeptide glycoforms with different number of sialic acids. Tryptic digests of other glycoproteins (i.e. human apolipoprotein CIII (APO-C3) and bovine alpha-1-acid glycoprotein (bAGP)) were also analyzed, demonstrating the applicability to glycopeptides with different glycan composition and nature.
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8
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Caslavska J, Schild C, Thormann W. High-resolution capillary zone electrophoresis and mass spectrometry for distinction of undersialylated and hypoglycosylated transferrin glycoforms in body fluids. J Sep Sci 2019; 43:241-257. [PMID: 31605446 DOI: 10.1002/jssc.201900857] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 10/01/2019] [Accepted: 10/09/2019] [Indexed: 12/21/2022]
Abstract
High-resolution capillary zone electrophoresis is used to distinguish transferrin glycoforms present in human serum, cerebrospinal fluid, and serum treated with neuraminidase and N-glycosidase F. The obtained data are compared to mass spectrometry data from the literature. The main focus is on the analysis of the various asialo-transferrin, monosialo-transferrin, and disialo-transferrin molecules found in these samples. The features of capillary zone electrophoresis and mass spectrometry are reviewed and highlighted in the context of the analysis of undersialylated and hypoglycosylated transferrin molecules. High-resolution capillary zone electrophoresis represents an effective tool to assess the diversity of transferrin patterns whereas mass spectrometry is the method of choice to elucidate structural identification about the glycoforms. Hypoglycosylated transferrin glycoforms present in sera of alcohol abusers and normal subjects are structurally identical to those in sera of patients with a congenital disorder of glycosylation type I. Asialo-transferrin, monosialo-transferrin and disialo-transferrin observed in sera of patients with a type II congenital disorder of glycosylation or a hemolytic uremic syndrome, in cerebrospinal fluid and after treatment of serum with neuraminidase are undersialylated transferrin glycoforms with two N-glycans of varying structure. Undersialylated disialo-transferrin is also observed in sera with high levels of trisialo-transferrin.
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Affiliation(s)
- Jitka Caslavska
- Clinical Pharmacology Laboratory, Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - Christof Schild
- Institute of Clinical Chemistry, Inselspital, University Hospital and University of Bern, Bern, Switzerland
| | - Wolfgang Thormann
- Clinical Pharmacology Laboratory, Institute for Infectious Diseases, University of Bern, Bern, Switzerland
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Penezić A, Križakova M, Miljuš G, Katrlik J, Nedić O. Diagnostic Potential of Transferrin Glycoforms-A Lectin-Based Protein Microarray Approach. Proteomics Clin Appl 2019; 13:e1800185. [PMID: 31050875 DOI: 10.1002/prca.201800185] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 02/28/2019] [Indexed: 12/12/2022]
Abstract
PURPOSE Disease or a specific condition may cause alteration of human transferrin (hTf) glycosylation pattern. A specific analytical platform, lectin-based protein microarray, is designed and optimized for the investigation of hTf glycans, attached to the protein core in their native form. EXPERIMENTAL DESIGN hTf molecules isolated from healthy persons of different age, diabetes mellitus type 2 (T2DM) or colorectal carcinoma (CRC) patients are used for method validation. Reliability of the results is ensured by three criteria for the evaluation of hTf-lectin interactions: i) signal-to-noise ratio above 3, ii) signal intensity above 250 arbitrary units, and iii) hTf concentration ensuring high sensitivity of the assay. RESULTS Six lectins, out of fourteen tested, satisfy the criteria. hTf is spotted at concentration of 50 µg mL-L . When physiological samples (isolated hTf) are analyzed, the highest potential to differentiate between population groups expresses Aleuria aurantia (AAL), Triticum vulgaris (WGA) and Phaseolus vulgaris (PHA-E) lectins. The initial amount of hTf which can be analyzed is very low (75 pg). CONCLUSION AND CLINICAL RELEVANCE Results confirm that a very sensitive, high-throughput lectin-based protein microarray platform can be formulated to detect changes in hTf glycan structures which can be considered as biomarkers of ageing or a disease.
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Affiliation(s)
- Ana Penezić
- Institute for the Application of Nuclear Energy (INEP), Banatska 31b, 11080, Belgrade, Serbia
| | - Martina Križakova
- Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovak Republic
| | - Goran Miljuš
- Institute for the Application of Nuclear Energy (INEP), Banatska 31b, 11080, Belgrade, Serbia
| | - Jaroslav Katrlik
- Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovak Republic
| | - Olgica Nedić
- Institute for the Application of Nuclear Energy (INEP), Banatska 31b, 11080, Belgrade, Serbia
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Mancera-Arteu M, Giménez E, Balmaña M, Barrabés S, Albiol-Quer M, Fort E, Peracaula R, Sanz-Nebot V. Multivariate data analysis for the detection of human alpha-acid glycoprotein aberrant glycosylation in pancreatic ductal adenocarcinoma. J Proteomics 2019; 195:76-87. [PMID: 30641231 DOI: 10.1016/j.jprot.2019.01.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 12/24/2018] [Accepted: 01/07/2019] [Indexed: 12/27/2022]
Abstract
Relative quantification of human alpha-acid glycoprotein (hAGP) glycan isomers using [12C6]/[13C6]-aniline in combination with multivariate data analysis is proposed as an efficient method for the identification of pancreatic ductal adenocarcinoma (PDAC) glycan biomarkers in serum samples. Intact and desialylated glycans from hAGP, purified from serum samples of patients with PDAC and chronic pancreatitis (ChrP), were labeled with aniline and analyzed by μZIC-HILIC-MS. Afterwards, partial least squares discriminant analysis (PLS-DA) was applied to the relative areas obtained for all glycan isomers in the different samples: pathological (ChrP or PDAC) versus healthy samples. Seven intact glycan isomers with α2-6 linked sialic acids, five of them also fucosylated, were the most meaningful to distinguish between PDAC and ChrP patients. The desialylated glycan isomers also identified by PLS-DA as potential biomarker candidates confirmed that antenna but also core fucosylation could be involved in PDAC. The analysis of intact and desialylated glycan isomers in combination with the multivariate data analysis revealed that the triantennary glycan with two fucoses of hAGP could have in the future a relevant role in the differentiation of patients with PDAC from those with ChrP. SIGNIFICANCE: Multivariate data analysis is currently being used in many omics fields for biomarker discovery. However, to date, no glycomics studies have applied chemometric tools combined with mass spectrometry in a preclinical research. In this work, this methodology has been used to identify altered glycosylation of human alpha-acid glycoprotein in pancreatic ductal adenocarcinoma (PDAC). The obtained results reveal that the triantennary glycan with two fucoses could have a great biomarker potential as it was relevant to differentiate PDAC and chronic pancreatitis (ChrP) patients.
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Affiliation(s)
- Montserrat Mancera-Arteu
- Department of Chemical Engineering and Analytical Chemistry, Institute for Research on Nutrition and Food Safety (INSA·UB), University of Barcelona, Barcelona, Spain
| | - Estela Giménez
- Department of Chemical Engineering and Analytical Chemistry, Institute for Research on Nutrition and Food Safety (INSA·UB), University of Barcelona, Barcelona, Spain.
| | - Meritxell Balmaña
- Biochemistry and Molecular Biology Unit, Department of Biology, University of Girona, Girona, Spain; Glycobiology in Cancer Group, i3S - Instituto de Investigação e Inovação em Saúde, Ipatimup - Institute of Molecular Pathology and Immunology, University of Porto, Porto, Portugal
| | - Sílvia Barrabés
- Biochemistry and Molecular Biology Unit, Department of Biology, University of Girona, Girona, Spain; Biomedical Research Institute of Girona (IdIBGi), Salt, Spain
| | - Maite Albiol-Quer
- Department of Surgery, Dr. Josep Trueta University Hospital, Girona, Spain
| | - Esther Fort
- Department of Gastroenterology, Dr. Josep Trueta University Hospital, Girona, Spain
| | - Rosa Peracaula
- Biochemistry and Molecular Biology Unit, Department of Biology, University of Girona, Girona, Spain; Biomedical Research Institute of Girona (IdIBGi), Salt, Spain
| | - Victòria Sanz-Nebot
- Department of Chemical Engineering and Analytical Chemistry, Institute for Research on Nutrition and Food Safety (INSA·UB), University of Barcelona, Barcelona, Spain
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Hacker B, Schultheiß C, Kurzik-Dumke U. Sequential cleavage of the proteins encoded by HNOT/ALG3, the human counterpart of the Drosophila NOT and yeast ALG3 gene, results in products acting in distinct cellular compartments. Hum Mol Genet 2018; 27:4231-4248. [PMID: 30192950 DOI: 10.1093/hmg/ddy315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 09/04/2018] [Indexed: 11/12/2022] Open
Abstract
This study provides first insights into the biosynthesis, structure, biochemistry and complex processing of the proteins encoded by hNOT/ALG3, the human counterpart of the Drosophila Neighbour of TID (NOT) and the yeast asparagine linked glycosylation 3 gene (ALG3), which encodes a mannosyltransferase. Unambiguous evidence that both the fly and human proteins act as mannosyltransferases has not been provided yet. Previously, we showed that hNOT/ALG3 encodes two alternatively spliced main transcripts, hNOT-1/ALG3-1 and hNOT-4/ALG3-4, and their 15 truncated derivatives that lack diverse sets of exons and/or carry point mutations that result in premature termination codons. Here we show that the truncated transcripts are not translated. The two main forms hNOT-1/ALG3-1 and -4, distinguishable by alternative exon 1, encode full-length precursors that undergo a complex posttranslational processing. To specifically detect the two full-length hNOT/ALG3 proteins and their distinct derivatives and to examine their expression profiles and cellular location we generated polyclonal antibodies against diverse parts of the putative full-length proteins. We provide experimental evidence for the N-glycosylation of the two precursors. This modification seems to be a prerequisite for their sequential cleavage resulting in derivatives destined to distinct cellular compartments and links them with the N-glycosylation machinery not as its functional component but as molecules functionally dependent on its action. We present the expression profiles and subcellular location of the two full-length proteins, their N-glycosylated forms and distinct cleavage products. Furthermore, using diverse bioinformatics tools, we characterize the properties and predict the 2D and 3D structure of the two proteins and, for comparative purposes, of their Drosophila counterpart.
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Affiliation(s)
- Benedikt Hacker
- Institute of Medical Microbiology and Hygiene, Laboratory for Comparative Tumour Biology, University Medical Centre, Johannes Gutenberg University, Obere Zahlbacher, Mainz, Germany
| | - Christoph Schultheiß
- Institute of Medical Microbiology and Hygiene, Laboratory for Comparative Tumour Biology, University Medical Centre, Johannes Gutenberg University, Obere Zahlbacher, Mainz, Germany
| | - Ursula Kurzik-Dumke
- Institute of Medical Microbiology and Hygiene, Laboratory for Comparative Tumour Biology, University Medical Centre, Johannes Gutenberg University, Obere Zahlbacher, Mainz, Germany
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12
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Hafstrand I, Badia-Martinez D, Josey BJ, Norström M, Buratto J, Pellegrino S, Duru AD, Sandalova T, Achour A. Crystal structures of H-2Db in complex with the LCMV-derived peptides GP92 and GP392 explain pleiotropic effects of glycosylation on antigen presentation and immunogenicity. PLoS One 2017; 12:e0189584. [PMID: 29253009 PMCID: PMC5734757 DOI: 10.1371/journal.pone.0189584] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 11/29/2017] [Indexed: 01/16/2023] Open
Abstract
Post-translational modifications significantly broaden the epitope repertoire for major histocompatibility class I complexes (MHC-I) and may allow viruses to escape immune recognition. Lymphocytic choriomeningitis virus (LCMV) infection of H-2b mice generates CD8+ CTL responses directed towards several MHC-I-restricted epitopes including the peptides GP92 (CSANNSHHYI) and GP392 (WLVTNGSYL), both with a N-glycosylation site. Interestingly, glycosylation has different effects on the immunogenicity and association capacity of these two epitopes to H-2Db. To assess the structural bases underlying these functional results, we determined the crystal structures of H-2Db in complex with GP92 (CSANNSHHYI) and GP392 (WLVTNGSYL) to 2.4 and 2.5 Å resolution, respectively. The structures reveal that while glycosylation of GP392 most probably impairs binding, the glycosylation of the asparagine residue in GP92, which protrudes towards the solvent, possibly allows for immune escape and/or forms a neo-epitope that may select for a different set of CD8 T cells. Altogether, the presented results provide a structural platform underlying the effects of post-translational modifications on epitope binding and/or immunogenicity, resulting in viral immune escape.
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Affiliation(s)
- Ida Hafstrand
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Daniel Badia-Martinez
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Benjamin John Josey
- NSU Cell Therapy Institute, Nova Southeastern University, Fort Lauderdale, FL, United State of America
- College of Allopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL, United State of America
| | - Melissa Norström
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Jérémie Buratto
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Sara Pellegrino
- DISFARM, Dipartimento di Scienze Farmaceutiche, Sezinone Chimica Generale e Organica, Università degli Studi, Milano, Italy
| | - Adil Doganay Duru
- NSU Cell Therapy Institute, Nova Southeastern University, Fort Lauderdale, FL, United State of America
- College of Allopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL, United State of America
| | - Tatyana Sandalova
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Adnane Achour
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
- * E-mail:
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Mancera-Arteu M, Giménez E, Benavente F, Barbosa J, Sanz-Nebot V. Analysis of O-Glycopeptides by Acetone Enrichment and Capillary Electrophoresis-Mass Spectrometry. J Proteome Res 2017; 16:4166-4176. [DOI: 10.1021/acs.jproteome.7b00524] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Montserrat Mancera-Arteu
- Department
of Chemical Engineering and Analytical Chemistry, University of Barcelona, 08028 Barcelona, Spain
| | - Estela Giménez
- Department
of Chemical Engineering and Analytical Chemistry, University of Barcelona, 08028 Barcelona, Spain
| | - Fernando Benavente
- Department
of Chemical Engineering and Analytical Chemistry, University of Barcelona, 08028 Barcelona, Spain
| | - José Barbosa
- Department
of Chemical Engineering and Analytical Chemistry, University of Barcelona, 08028 Barcelona, Spain
| | - Victòria Sanz-Nebot
- Department
of Chemical Engineering and Analytical Chemistry, University of Barcelona, 08028 Barcelona, Spain
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