1
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Bhalchandra S, Gevers K, Heimburg-Molinaro J, van Roosmalen M, Coppens I, Cummings RD, Ward HD. Identification of the glycopeptide epitope recognized by a protective Cryptosporidium monoclonal antibody. Infect Immun 2023; 91:e0027523. [PMID: 37725059 PMCID: PMC10580954 DOI: 10.1128/iai.00275-23] [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: 07/20/2023] [Accepted: 07/26/2023] [Indexed: 09/21/2023] Open
Abstract
Cryptosporidium species are a leading cause of pediatric diarrheal disease and death in low- and middle-income countries and pose a particular threat to immunocompromised individuals. As a zoonotic pathogen, Cryptosporidium can have devastating effects on the health of neonatal calves. Despite its impact on human and animal health, consistently effective drug treatments for cryptosporidiosis are lacking and no vaccine is available. We previously showed that C. parvum mucin-like glycoproteins, gp40, and gp900 express an epitope identified by a monoclonal antibody 4E9. 4E9 neutralized C. parvum infection in vitro as did glycan-binding proteins specific for the Tn antigen (GalNAc-α1-S/T). Here, we show that 4E9 ameliorates disease in vivo in a calf challenge model. The 4E9 epitope is present on C. hominis in addition to C. parvum gp40 and gp900 and localizes to the plasma membrane and dense granules of invasive and intracellular stages. To characterize the epitope recognized by 4E9, we probed a glycan array containing over 500 defined glycans together with a custom-made glycopeptide microarray containing glycopeptides from native mucins or C. parvum gp40 and gp15. 4E9 exhibited no binding to the glycan array but bound strongly to glycopeptides from native mucins or gp40 on the glycopeptide array, suggesting that the antibody epitope contains both peptide and glycan moieties. 4E9 only recognized glycopeptides with adjacent S or T residues in the motif S*/T*-X-S*/T* where X = 0 or 1. These data define the 4E9 epitope and have implications for the inclusion of the epitope in the development of vaccines or other immune-based therapies.
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Affiliation(s)
- Seema Bhalchandra
- Division of Geographic Medicine and Infectious Diseases, Tufts Medical Center, Boston, Massachusetts, USA
| | | | - Jamie Heimburg-Molinaro
- Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | | | - Isabelle Coppens
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Richard D. Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Honorine D. Ward
- Division of Geographic Medicine and Infectious Diseases, Tufts Medical Center, Boston, Massachusetts, USA
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2
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Sanz-Martinez I, Pereira S, Merino P, Corzana F, Hurtado-Guerrero R. Molecular Recognition of GalNAc in Mucin-Type O-Glycosylation. Acc Chem Res 2023; 56:548-560. [PMID: 36815693 PMCID: PMC9996832 DOI: 10.1021/acs.accounts.2c00723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
ConspectusN-Acetylgalactosamine (GalNAc)-type O-glycosylation is an essential posttranslational modification (PTM) that plays fundamental roles in biology. Malfunction of this PTM is exemplified by the presence of truncated O-glycans in cancer. For instance, the glycoprotein MUC1 is overexpressed in many tumor tissues and tends to carry simple oligosaccharides that allow for the presentation of different tumor-associated antigens, such as the Tn or sTn antigens (GalNAc-α-1-O-Thr/Ser and Neu5Acα2-6GalNAcα1-O-Ser/Thr, respectively). In other cases, such as tumoral calcinosis associated with O-glycosylation of the fibroblast growth factor 23, O-glycans are absent or less abundant. Significant progress has been made in determining the three-dimensional structures of biomolecules that recognize GalNAc, such as antibodies, lectins, mucinases, GalNAc-transferases, and other glycosyltransferases. Analysis of the complexes between these entities and GalNAc-containing glycopeptides, in most cases derived from crystallographic or NMR analysis, provides an understanding of the key structural elements that control molecular recognition of these glycopeptides. Here, we describe and compare the binding sites of these proteins in detail, focusing on how the GalNAc moieties interact selectively with them. We also summarize the differences and similarities in GalNAc recognition. In general, the recognition of GalNAc-containing glycopeptides is determined by hydrogen bonds between hydroxyl groups and the N-acetyl group of GalNAc with proteins, as well as CH-π contacts in which the hydrophobic α-face of the sugar and the methyl group of NHAc can be involved. The latter interaction usually provides the basis for selectivity. It is worth noting that binding of these glycopeptides depends primarily on recognition of the sugar moiety, with some exceptions such as a few anti-MUC1 antibodies that primarily recognize the peptide backbone and use the sugar to facilitate shape complementarity or to establish a limited number of interactions with the protein. Focusing specifically on the GalNAc moiety, we can observe that there is some degeneracy of interactions within the same protein families, likely due to substrate flexibility. However, when all studied proteins are considered together, despite the commonalities within each protein family, no pattern can be discerned between the different families, apart from the presence of common residues such as Tyr, His, or Asp, which are responsible for hydrogen bonds. The lack of a pattern can be anticipated, given the diverse functions of mucinases, glycosyltransferases, antibodies, and lectins. Finally, it is important to point out that the conformational differences observed in solution in glycopeptides bearing GalNAc-α-1-O-Ser or GalNAc-α-1-O-Thr also can be found in the bound state. This unique characteristic is exploited, for instance, by the enzyme C1GalT1 to broadly glycosylate both acceptor substrates. The findings summarized in this review may contribute to the rational structure-guided development of therapeutic vaccines, novel diagnostic tools for early cancer detection, and new cancer treatments for cancer with tailored anti-Tn or anti-STn antibodies or new drugs to inhibit GalNAc-T isoenzymes.
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Affiliation(s)
- Ignacio Sanz-Martinez
- Institute of Biocomputation and Physics of Complex Systems (BIFI), Glycobiology Unit, University of Zaragoza, Mariano Esquillor s/n, Campus Rio Ebro, Edificio I+D, 50018 Zaragoza, Spain.,Department of Organic Chemistry, Faculty of Sciences, University of Zaragoza, Campus San Francisco, 50009 Zaragoza, Spain
| | - Sandra Pereira
- Institute of Biocomputation and Physics of Complex Systems (BIFI), Glycobiology Unit, University of Zaragoza, Mariano Esquillor s/n, Campus Rio Ebro, Edificio I+D, 50018 Zaragoza, Spain.,Department of Organic Chemistry, Faculty of Sciences, University of Zaragoza, Campus San Francisco, 50009 Zaragoza, Spain
| | - Pedro Merino
- Institute of Biocomputation and Physics of Complex Systems (BIFI), Glycobiology Unit, University of Zaragoza, Mariano Esquillor s/n, Campus Rio Ebro, Edificio I+D, 50018 Zaragoza, Spain.,Department of Organic Chemistry, Faculty of Sciences, University of Zaragoza, Campus San Francisco, 50009 Zaragoza, Spain
| | - Francisco Corzana
- Department of Chemistry, Centro de Investigación en Síntesis Química, University of La Rioja, Madre de Dios 53, 26006 Logroño, Spain
| | - Ramon Hurtado-Guerrero
- Institute of Biocomputation and Physics of Complex Systems (BIFI), Glycobiology Unit, University of Zaragoza, Mariano Esquillor s/n, Campus Rio Ebro, Edificio I+D, 50018 Zaragoza, Spain.,Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen DK-2200, Denmark.,Fundación ARAID, 50018 Zaragoza, Spain
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3
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Barchi JJ, Strain CN. The effect of a methyl group on structure and function: Serine vs. threonine glycosylation and phosphorylation. Front Mol Biosci 2023; 10:1117850. [PMID: 36845552 PMCID: PMC9950641 DOI: 10.3389/fmolb.2023.1117850] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 01/30/2023] [Indexed: 02/12/2023] Open
Abstract
A variety of glycan structures cover the surface of all cells and are involved in myriad biological processes, including but not limited to, cell adhesion and communication, protein quality control, signal transduction and metabolism, while also being intimately involved in innate and adaptive immune functions. Immune surveillance and responses to foreign carbohydrate antigens, such as capsular polysaccharides on bacteria and surface protein glycosylation of viruses, are the basis of microbial clearance, and most antimicrobial vaccines target these structures. In addition, aberrant glycans on tumors called Tumor-Associated Carbohydrate Antigens (TACAs) elicit immune responses to cancer, and TACAs have been used in the design of many antitumor vaccine constructs. A majority of mammalian TACAs are derived from what are referred to as mucin-type O-linked glycans on cell-surface proteins and are linked to the protein backbone through the hydroxyl group of either serine or threonine residues. A small group of structural studies that have compared mono- and oligosaccharides attached to each of these residues have shown that there are distinct differences in conformational preferences assumed by glycans attached to either "unmethylated" serine or ß-methylated threonine. This suggests that the linkage point of antigenic glycans will affect their presentation to the immune system as well as to various carbohydrate binding molecules (e.g., lectins). This short review, followed by our hypothesis, will examine this possibility and extend the concept to the presentation of glycans on surfaces and in assay systems where recognition of glycans by proteins and other binding partners can be defined by different attachment points that allow for a range of conformational presentations.
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Affiliation(s)
| | - Caitlin N. Strain
- Center for Cancer Research, Chemical Biology Laboratory, National Cancer Institute at Frederick, Frederick, MD, United States
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4
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Kohout VR, Wardzala CL, Kramer JR. Synthesis and biomedical applications of mucin mimic materials. Adv Drug Deliv Rev 2022; 191:114540. [PMID: 36228896 PMCID: PMC10066857 DOI: 10.1016/j.addr.2022.114540] [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: 02/10/2022] [Revised: 08/17/2022] [Accepted: 09/13/2022] [Indexed: 02/09/2023]
Abstract
Mucin glycoproteins are the major component of mucus and coat epithelial cell surfaces forming the glycocalyx. The glycocalyx and mucus are involved in the transport of nutrients, drugs, gases, and pathogens toward the cell surface. Mucins are also involved in diverse diseases such as cystic fibrosis and cancer. Due to inherent heterogeneity in native mucin structure, many synthetic materials have been designed to probe mucin chemistry, biology, and physics. Such materials include various glycopolymers, low molecular weight glycopeptides, glycopolypeptides, polysaccharides, and polysaccharide-protein conjugates. This review highlights advances in the area of design and synthesis of mucin mimic materials, and their biomedical applications in glycan binding, epithelial models of infection, therapeutic delivery, vaccine formulation, and beyond.
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Affiliation(s)
- Victoria R Kohout
- Department of Biomedical Engineering, University of Utah, 36 S. Wasatch Dr., Salt Lake City, UT 84112, USA
| | - Casia L Wardzala
- Department of Biomedical Engineering, University of Utah, 36 S. Wasatch Dr., Salt Lake City, UT 84112, USA
| | - Jessica R Kramer
- Department of Biomedical Engineering, University of Utah, 36 S. Wasatch Dr., Salt Lake City, UT 84112, USA.
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5
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González-Ramírez AM, Grosso AS, Yang Z, Compañón I, Coelho H, Narimatsu Y, Clausen H, Marcelo F, Corzana F, Hurtado-Guerrero R. Structural basis for the synthesis of the core 1 structure by C1GalT1. Nat Commun 2022; 13:2398. [PMID: 35504880 PMCID: PMC9065035 DOI: 10.1038/s41467-022-29833-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 03/31/2022] [Indexed: 12/18/2022] Open
Abstract
C1GalT1 is an essential inverting glycosyltransferase responsible for synthesizing the core 1 structure, a common precursor for mucin-type O-glycans found in many glycoproteins. To date, the structure of C1GalT1 and the details of substrate recognition and catalysis remain unknown. Through biophysical and cellular studies, including X-ray crystallography of C1GalT1 complexed to a glycopeptide, we report that C1GalT1 is an obligate GT-A fold dimer that follows a SN2 mechanism. The binding of the glycopeptides to the enzyme is mainly driven by the GalNAc moiety while the peptide sequence provides optimal kinetic and binding parameters. Interestingly, to achieve glycosylation, C1GalT1 recognizes a high-energy conformation of the α-GalNAc-Thr linkage, negligibly populated in solution. By imposing this 3D-arrangement on that fragment, characteristic of α-GalNAc-Ser peptides, C1GalT1 ensures broad glycosylation of both acceptor substrates. These findings illustrate a structural and mechanistic blueprint to explain glycosylation of multiple acceptor substrates, extending the repertoire of mechanisms adopted by glycosyltransferases. The glycosyltransferase C1GalT1 directs a key step in protein O-glycosylation important for the expression of the cancer-associated Tn and T antigens. Here, the authors provide molecular insights into the function of C1GalT1 by solving the crystal structure of the Drosophila enzyme-substrate complex.
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Affiliation(s)
- Andrés Manuel González-Ramírez
- Institute of Biocompuation and Physics of Complex Systems, University of Zaragoza, Mariano Esquillor s/n, Campus Rio Ebro, Edificio I+D, 50018, Zaragoza, Spain
| | - Ana Sofia Grosso
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, 2829-516, Caparica, Portugal.,UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, 2829-516, Caparica, Portugal
| | - Zhang Yang
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen N, Denmark
| | - Ismael Compañón
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, E-26006, Logroño, Spain
| | - Helena Coelho
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, 2829-516, Caparica, Portugal.,UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, 2829-516, Caparica, Portugal
| | - Yoshiki Narimatsu
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen N, Denmark
| | - Henrik Clausen
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen N, Denmark
| | - Filipa Marcelo
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, 2829-516, Caparica, Portugal.,UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, 2829-516, Caparica, Portugal
| | - Francisco Corzana
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, E-26006, Logroño, Spain.
| | - Ramon Hurtado-Guerrero
- Institute of Biocompuation and Physics of Complex Systems, University of Zaragoza, Mariano Esquillor s/n, Campus Rio Ebro, Edificio I+D, 50018, Zaragoza, Spain. .,Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen N, Denmark. .,Fundación ARAID, 50018, Zaragoza, Spain.
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6
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Coelho H, Rivas MDL, Grosso AS, Diniz A, Soares CO, Francisco RA, Dias JS, Compañon I, Sun L, Narimatsu Y, Vakhrushev SY, Clausen H, Cabrita EJ, Jiménez-Barbero J, Corzana F, Hurtado-Guerrero R, Marcelo F. Atomic and Specificity Details of Mucin 1 O-Glycosylation Process by Multiple Polypeptide GalNAc-Transferase Isoforms Unveiled by NMR and Molecular Modeling. JACS AU 2022; 2:631-645. [PMID: 35373202 PMCID: PMC8969996 DOI: 10.1021/jacsau.1c00529] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Indexed: 05/10/2023]
Abstract
The large family of polypeptide GalNAc-transferases (GalNAc-Ts) controls with precision how GalNAc O-glycans are added in the tandem repeat regions of mucins (e.g., MUC1). However, the structural features behind the creation of well-defined and clustered patterns of O-glycans in mucins are poorly understood. In this context, herein, we disclose the full process of MUC1 O-glycosylation by GalNAc-T2/T3/T4 isoforms by NMR spectroscopy assisted by molecular modeling protocols. By using MUC1, with four tandem repeat domains as a substrate, we confirmed the glycosylation preferences of different GalNAc-Ts isoforms and highlighted the importance of the lectin domain in the glycosylation site selection after the addition of the first GalNAc residue. In a glycosylated substrate, with yet multiple acceptor sites, the lectin domain contributes to orientate acceptor sites to the catalytic domain. Our experiments suggest that during this process, neighboring tandem repeats are critical for further glycosylation of acceptor sites by GalNAc-T2/T4 in a lectin-assisted manner. Our studies also show local conformational changes in the peptide backbone during incorporation of GalNAc residues, which might explain GalNAc-T2/T3/T4 fine specificities toward the MUC1 substrate. Interestingly, we postulate that a specific salt-bridge and the inverse γ-turn conformation of the PDTRP sequence in MUC1 are the main structural motifs behind the GalNAc-T4 specificity toward this region. In addition, in-cell analysis shows that the GalNAc-T4 isoform is the only isoform glycosylating the Thr of the immunogenic epitope PDTRP in vivo, which highlights the relevance of GalNAc-T4 in the glycosylation of this epitope. Finally, the NMR methodology established herein can be extended to other glycosyltransferases, such as C1GalT1 and ST6GalNAc-I, to determine the specificity toward complex mucin acceptor substrates.
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Affiliation(s)
- Helena Coelho
- Associate
Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School
of Science and Technology, Universidade
NOVA de Lisboa, 2829-516 Caparica, Portugal
- UCIBIO,
Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
- CIC
bioGUNE, Basque Research and Technology
Alliance (BRTA), Bizkaia
Technology Park, Building 801A, 48170 Derio, Spain
- Department
of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, Leioa 48940, Bizkaia, Spain
| | - Matilde de las Rivas
- Institute
for Biocomputation and Physics of Complex Systems (BIFI), Laboratorio
de Microscopias Avanzadas (LMA), University
of Zaragoza, Mariano
Esquillor s/n, Campus Rio Ebro, Edificio I+D, 50018 Zaragoza, Spain
| | - Ana S. Grosso
- Associate
Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School
of Science and Technology, Universidade
NOVA de Lisboa, 2829-516 Caparica, Portugal
- UCIBIO,
Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Ana Diniz
- Associate
Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School
of Science and Technology, Universidade
NOVA de Lisboa, 2829-516 Caparica, Portugal
- UCIBIO,
Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Cátia O. Soares
- Associate
Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School
of Science and Technology, Universidade
NOVA de Lisboa, 2829-516 Caparica, Portugal
- UCIBIO,
Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Rodrigo A. Francisco
- Associate
Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School
of Science and Technology, Universidade
NOVA de Lisboa, 2829-516 Caparica, Portugal
- UCIBIO,
Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Jorge S. Dias
- Associate
Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School
of Science and Technology, Universidade
NOVA de Lisboa, 2829-516 Caparica, Portugal
- UCIBIO,
Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Ismael Compañon
- Departamento
de Química, Centro de Investigación en Síntesis
Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Lingbo Sun
- Copenhagen
Center for Glycomics, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen DK-2200, Denmark
| | - Yoshiki Narimatsu
- Copenhagen
Center for Glycomics, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen DK-2200, Denmark
| | - Sergey Y. Vakhrushev
- Copenhagen
Center for Glycomics, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen DK-2200, Denmark
| | - Henrik Clausen
- Copenhagen
Center for Glycomics, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen DK-2200, Denmark
| | - Eurico J. Cabrita
- Associate
Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School
of Science and Technology, Universidade
NOVA de Lisboa, 2829-516 Caparica, Portugal
- UCIBIO,
Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Jesús Jiménez-Barbero
- CIC
bioGUNE, Basque Research and Technology
Alliance (BRTA), Bizkaia
Technology Park, Building 801A, 48170 Derio, Spain
- Department
of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, Leioa 48940, Bizkaia, Spain
- Ikerbasque,
Basque Foundation for Science, Maria Diaz de Haro 13, 48009 Bilbao, Spain
- Centro de Investigacion
Biomedica En Red de Enfermedades Respiratorias, 28029 Madrid, Spain
| | - Francisco Corzana
- Departamento
de Química, Centro de Investigación en Síntesis
Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Ramon Hurtado-Guerrero
- Institute
for Biocomputation and Physics of Complex Systems (BIFI), Laboratorio
de Microscopias Avanzadas (LMA), University
of Zaragoza, Mariano
Esquillor s/n, Campus Rio Ebro, Edificio I+D, 50018 Zaragoza, Spain
- Copenhagen
Center for Glycomics, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen DK-2200, Denmark
- Fundación
ARAID, 50018 Zaragoza, Spain
| | - Filipa Marcelo
- Associate
Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School
of Science and Technology, Universidade
NOVA de Lisboa, 2829-516 Caparica, Portugal
- UCIBIO,
Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
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7
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Li C, Palma AS, Zhang P, Zhang Y, Gao C, Silva LM, Li Z, Trovão F, Weishaupt M, Seeberger PH, Likhosherstov LM, Piskarev V, Yu J, Westerlind U, Chai W. Non-Covalent Microarrays from Synthetic Amino-Terminating Glycans-Implications in Expanding Glycan Microarray Diversity and Platform Comparison. Glycobiology 2021; 31:931-946. [PMID: 33978739 PMCID: PMC8434801 DOI: 10.1093/glycob/cwab037] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 01/23/2023] Open
Abstract
Glycan microarrays have played important roles in detection and specificity assignment of glycan-recognition by proteins. However, the size and diversity of glycan libraries in current microarray systems are small compared to estimated glycomes, and these may lead to missed detection or incomplete assignment. For microarray construction, covalent and non-covalent immobilization are the two types of methods used, but a direct comparison of results from the two platforms is required. Here we develop a chemical strategy to prepare lipid-linked probes from both naturally-derived aldehyde-terminating and synthetic amino-terminating glycans that addresses the two aspects: expansion of sequence-defined glycan libraries and comparison of the two platforms. We demonstrate the specific recognition by plant and mammalian lectins, carbohydrate-binding modules and antibodies, and the overall similarities from the two platforms. Our results provide new knowledge on unique glycan-binding specificities for the immune-receptor Dectin-1 towards β-glucans and the interaction of rotavirus P[19] adhesive protein with mucin O-glycan cores.
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Affiliation(s)
- Chunxia Li
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy and Shandong Provincial Key laboratory of Glycoscience and Glycoengineering, Ocean University of China, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts of Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
| | - Angelina S Palma
- Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University of Lisbon, Portugal
| | - Pengtao Zhang
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy and Shandong Provincial Key laboratory of Glycoscience and Glycoengineering, Ocean University of China, Qingdao, China
| | - Yibing Zhang
- Glycosciences Laboratory, Imperial College London, London W12 0NN, United Kingdom
| | - Chao Gao
- Glycosciences Laboratory, Imperial College London, London W12 0NN, United Kingdom
| | - Lisete M Silva
- Glycosciences Laboratory, Imperial College London, London W12 0NN, United Kingdom
| | - Zhen Li
- Glycosciences Laboratory, Imperial College London, London W12 0NN, United Kingdom
| | - Filipa Trovão
- Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University of Lisbon, Portugal
| | - Markus Weishaupt
- Department of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Potsdam, Germany
| | - Peter H Seeberger
- Department of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Potsdam, Germany
| | - Leonid M Likhosherstov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Vladimir Piskarev
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia
| | - Jin Yu
- Umeå University, Department of Chemistry, KBC-building, Linneaus väg 6, S-907 36 Umeå, Sweden
| | - Ulrika Westerlind
- Umeå University, Department of Chemistry, KBC-building, Linneaus väg 6, S-907 36 Umeå, Sweden
| | - Wengang Chai
- Glycosciences Laboratory, Imperial College London, London W12 0NN, United Kingdom
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8
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Borgert A, Foley BL, Live D. Contrasting the conformational effects of α-O-GalNAc and α-O-Man glycan protein modifications and their impact on the mucin-like region of alpha-dystroglycan. Glycobiology 2020; 31:649-661. [PMID: 33295623 DOI: 10.1093/glycob/cwaa112] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/19/2020] [Accepted: 12/03/2020] [Indexed: 12/14/2022] Open
Abstract
We have carried out a comparative study of the conformational impact of modifications to threonine residues of either α-O-Man or α-O-GalNAc in the context of a sequence from the mucin-like region of α-dystroglycan. Both such modifications can coexist in this domain of the glycoprotein. Solution NMR experiments and molecular dynamics calculations were employed. Comparing the results for an unmodified peptide Ac- PPTTTTKKP-NH2 sequence from α-dystroglycan, and glycoconjugates with either modification on the Ts, we find that the impact of the α-O-Man modification on the peptide scaffold is quite limited, while that of the α-O-GalNAc is more profound. The results for the α-O-GalNAc glycoconjugate are consistent with what has been seen earlier in other systems. Further examination of the NMR-based structure and the MD results suggest a more extensive network of hydrogen bond interactions within the α-O-GalNAc-threonine residue than has been previously appreciated, which influences the properties of the protein backbone. The conformational effects are relevant to the mechanical properties of α-dystroglycan.
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Affiliation(s)
- Andrew Borgert
- Department of Medical Research, Gundersen Health System, 1900 South Ave., La Crosse, WI 54601, USA
| | - B Lachele Foley
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA
| | - David Live
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA
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9
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Yang W, Ao M, Song A, Xu Y, Sokoll L, Zhang H. Mass Spectrometric Mapping of Glycoproteins Modified by Tn-Antigen Using Solid-Phase Capture and Enzymatic Release. Anal Chem 2020; 92:9230-9238. [PMID: 32510927 DOI: 10.1021/acs.analchem.0c01564] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Tn-antigen (Tn), a single N-acetylgalactosamine (GalNAc) monosaccharide attached to protein Ser/Thr residues, is found on most cancer yet rarely detected in adult normal tissues as reported in previous studies, featuring it as one of the most distinctive signatures of cancer. Although it is important in cancer, Tn modified glycoproteins are not entirely clear owing to the lack of a suitable method. Knowing the Tn-glycosylated proteins and glycosylation sites are essential to the prevention, diagnosis, and therapy of cancer associated with the expression of Tn. Here, we introduce a method named EXoO-Tn for large-scale mapping of Tn-glycosylated proteins and glycosylation sites. EXoO-Tn utilizes solid-phase immobilization of proteolytic peptides of proteins, which modifies Tn by glycosyltransferase C1GalT1 with isotopically labeled UDP-Gal(13C6), to tag and convert Tn to Gal(13C6)-Tn, which gives rise to a unique glycan mass. The exquisite Gal(13C6) modified Tn are then recognized by a human-gut-bacterial enzyme, OpeRATOR, and released at the N-termini of the Gal(13C6)-Tn-occupied Ser/Thr residues from immobilized peptides to yield site-containing glycopeptides. The effectiveness of EXoO-Tn was benchmarked by analyzing Jurkat cells, where 947 Tn-glycosylation sites from 480 glycoproteins were mapped. The EXoO-Tn was further applied to the analysis of pancreatic cancer sera, where Tn-glycoproteins were identified. Given the significance of Tn in cancer, EXoO-Tn is anticipated to have broad translational and clinical utilities.
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Affiliation(s)
- Weiming Yang
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Minghui Ao
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Angellina Song
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Yuanwei Xu
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Lori Sokoll
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Hui Zhang
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
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10
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Pieroni L, Iavarone F, Olianas A, Greco V, Desiderio C, Martelli C, Manconi B, Sanna MT, Messana I, Castagnola M, Cabras T. Enrichments of post-translational modifications in proteomic studies. J Sep Sci 2019; 43:313-336. [PMID: 31631532 DOI: 10.1002/jssc.201900804] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 09/23/2019] [Accepted: 10/17/2019] [Indexed: 12/14/2022]
Abstract
More than 300 different protein post-translational modifications are currently known, but only a few have been extensively investigated because modified proteoforms are commonly present in sub-stoichiometry amount. For this reason, improvement of specific enrichment techniques is particularly useful for the proteomic characterization of post-translationally modified proteins. Enrichment proteomic strategies could help the researcher in the challenging issue to decipher the complex molecular cross-talk existing between the different factors influencing the cellular pathways. In this review the state of art of the platforms applied for the enrichment of specific and most common post-translational modifications, such as glycosylation and glycation, phosphorylation, sulfation, redox modifications (i.e. sulfydration and nitrosylation), methylation, acetylation, and ubiquitinylation, are described. Enrichments strategies applied to characterize less studied post-translational modifications are also briefly discussed.
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Affiliation(s)
- Luisa Pieroni
- Laboratorio di Proteomica e Metabolomica, Centro Europeo di Ricerca sul Cervello, IRCCS Fondazione Santa Lucia, Rome, Italy
| | - Federica Iavarone
- Istituto di Biochimica e Biochimica Clinica, Facoltà di Medicina, Università Cattolica del Sacro Cuore, Rome, Italy.,IRCCS Fondazione Policlinico Universitario Agostino Gemelli, Rome, Italy
| | - Alessandra Olianas
- Dipartimento di Scienze della Vita e dell'Ambiente, Università di Cagliari, Cagliari, Italy
| | - Viviana Greco
- Istituto di Biochimica e Biochimica Clinica, Facoltà di Medicina, Università Cattolica del Sacro Cuore, Rome, Italy.,IRCCS Fondazione Policlinico Universitario Agostino Gemelli, Rome, Italy
| | - Claudia Desiderio
- Istituto di Chimica del Riconoscimento Molecolare, Consiglio Nazionale delle Ricerche, Rome, Italy
| | - Claudia Martelli
- Department of Biology, Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - Barbara Manconi
- Dipartimento di Scienze della Vita e dell'Ambiente, Università di Cagliari, Cagliari, Italy
| | - Maria Teresa Sanna
- Dipartimento di Scienze della Vita e dell'Ambiente, Università di Cagliari, Cagliari, Italy
| | - Irene Messana
- Istituto di Chimica del Riconoscimento Molecolare, Consiglio Nazionale delle Ricerche, Rome, Italy
| | - Massimo Castagnola
- Laboratorio di Proteomica e Metabolomica, Centro Europeo di Ricerca sul Cervello, IRCCS Fondazione Santa Lucia, Rome, Italy
| | - Tiziana Cabras
- Dipartimento di Scienze della Vita e dell'Ambiente, Università di Cagliari, Cagliari, Italy
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11
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Kumar A, Narayanan V, Sekhar A. Characterizing Post-Translational Modifications and Their Effects on Protein Conformation Using NMR Spectroscopy. Biochemistry 2019; 59:57-73. [PMID: 31682116 DOI: 10.1021/acs.biochem.9b00827] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The diversity of the cellular proteome substantially exceeds the number of genes coded by the DNA of an organism because one or more residues in a majority of eukaryotic proteins are post-translationally modified (PTM) by the covalent conjugation of specific chemical groups. We now know that PTMs alter protein conformation and function in ways that are not entirely understood at the molecular level. NMR spectroscopy has been particularly successful as an analytical tool in elucidating the themes underlying the structural role of PTMs. In this Perspective, we focus on the NMR-based characterization of three abundant PTMs: phosphorylation, acetylation, and glycosylation. We detail NMR methods that have found success in detecting these modifications at a site-specific level. We also highlight NMR studies that have mapped the conformational changes ensuing from these PTMs as well as evaluated their relation to function. The NMR toolbox is expanding rapidly with experiments available to probe not only the average structure of biomolecules but also how this structure changes with time on time scales ranging from picoseconds to seconds. The atomic resolution insights into the biomolecular structure, dynamics, and mechanism accessible from NMR spectroscopy ensure that NMR will continue to be at the forefront of research in the structural biology of PTMs.
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Affiliation(s)
- Ajith Kumar
- Molecular Biophysics Unit , Indian Institute of Science , Bangalore 560 012 , India
| | - Vaishali Narayanan
- Molecular Biophysics Unit , Indian Institute of Science , Bangalore 560 012 , India
| | - Ashok Sekhar
- Molecular Biophysics Unit , Indian Institute of Science , Bangalore 560 012 , India
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12
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Boles GC, Hightower RL, Berden G, Oomens J, Armentrout PB. Zinc and Cadmium Complexation of l-Threonine: An Infrared Multiple Photon Dissociation Spectroscopy and Theoretical Study. J Phys Chem B 2019; 123:9343-9354. [DOI: 10.1021/acs.jpcb.9b08184] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Georgia C. Boles
- Department of Chemistry, University of Utah, 315 South 1400 East Room 2020, Salt Lake City, Utah 84112, United States
| | - Randy L. Hightower
- Department of Chemistry, University of Utah, 315 South 1400 East Room 2020, Salt Lake City, Utah 84112, United States
| | - Giel Berden
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, NL-6525 ED Nijmegen, The Netherlands
| | - Jos Oomens
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, NL-6525 ED Nijmegen, The Netherlands
- van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, The Netherlands
| | - P. B. Armentrout
- Department of Chemistry, University of Utah, 315 South 1400 East Room 2020, Salt Lake City, Utah 84112, United States
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13
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de Las Rivas M, Lira-Navarrete E, Gerken TA, Hurtado-Guerrero R. Polypeptide GalNAc-Ts: from redundancy to specificity. Curr Opin Struct Biol 2019; 56:87-96. [PMID: 30703750 PMCID: PMC6656595 DOI: 10.1016/j.sbi.2018.12.007] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 12/12/2018] [Accepted: 12/19/2018] [Indexed: 12/11/2022]
Abstract
Mucin-type O-glycosylation is a post-translational modification (PTM) that is predicted to occur in more than the 80% of the proteins that pass through the Golgi apparatus. This PTM is initiated by a family of polypeptide GalNAc-transferases (GalNAc-Ts) that modify Ser and Thr residues of proteins through the addition of a GalNAc moiety. These enzymes are type II membrane proteins that consist of a Golgi luminal catalytic domain connected by a flexible linker to a ricin type lectin domain. Together, both domains account for the different glycosylation preferences observed among isoenzymes. Although it is well accepted that most of the family members share some degree of redundancy toward their protein and glycoprotein substrates, it has been recently found that several GalNAc-Ts also possess activity toward specific targets. Despite the high similarity between isoenzymes, structural differences have recently been reported that are key to understanding the molecular basis of both their redundancy and specificity. The present review focuses on the molecular aspects of the protein substrate recognition and the different glycosylation preferences of these enzymes, which in turn will serve as a roadmap to the rational design of specific modulators of mucin-type O-glycosylation.
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Affiliation(s)
- Matilde de Las Rivas
- BIFI, University of Zaragoza, BIFI-IQFR (CSIC) Joint Unit, Mariano Esquillor s/n, Campus Rio Ebro, Edificio I+D, Zaragoza, Spain
| | - Erandi Lira-Navarrete
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, Copenhagen, Denmark
| | - Thomas A Gerken
- Departments of Biochemistry, Chemistry and Pediatrics Case Western Reserve University, Cleveland, OH, USA.
| | - Ramon Hurtado-Guerrero
- BIFI, University of Zaragoza, BIFI-IQFR (CSIC) Joint Unit, Mariano Esquillor s/n, Campus Rio Ebro, Edificio I+D, Zaragoza, Spain; Fundación ARAID, 50018, Zaragoza, Spain.
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14
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Marcelo F, Supekar N, Corzana F, van der Horst JC, Vuist IM, Live D, Boons GJPH, Smith DF, van Vliet SJ. Identification of a secondary binding site in human macrophage galactose-type lectin by microarray studies: Implications for the molecular recognition of its ligands. J Biol Chem 2018; 294:1300-1311. [PMID: 30504228 DOI: 10.1074/jbc.ra118.004957] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 11/26/2018] [Indexed: 11/06/2022] Open
Abstract
The human macrophage galactose-type lectin (MGL) is a C-type lectin characterized by a unique specificity for terminal GalNAc residues present in the tumor-associated Tn antigen (αGalNAc-Ser/Thr) and its sialylated form, the sialyl-Tn antigen. However, human MGL has multiple splice variants, and whether these variants have distinct ligand-binding properties is unknown. Here, using glycan microarrays, we compared the binding properties of the short MGL 6C (MGLshort) and the long MGL 6B (MGLlong) splice variants, as well as of a histidine-to-threonine mutant (MGLshort H259T). Although the MGLshort and MGLlong variants displayed similar binding properties on the glycan array, the MGLshort H259T mutant failed to interact with the sialyl-Tn epitope. As the MGLshort H259T variant could still bind a single GalNAc monosaccharide on this array, we next investigated its binding characteristics to Tn-containing glycopeptides derived from the MGL ligands mucin 1 (MUC1), MUC2, and CD45. Strikingly, in the glycopeptide microarray, the MGLshort H259T variant lost high-affinity binding toward Tn-containing glycopeptides, especially at low probing concentrations. Moreover, MGLshort H259T was unable to recognize cancer-associated Tn epitopes on tumor cell lines. Molecular dynamics simulations indicated that in WT MGLshort, His259 mediates H bonds directly or engages the Tn-glycopeptide backbone through water molecules. These bonds were lost in MGLshort H259T, thus explaining its lower binding affinity. Together, our results suggest that MGL not only connects to the Tn carbohydrate epitope, but also engages the underlying peptide via a secondary binding pocket within the MGL carbohydrate recognition domain containing the His259 residue.
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Affiliation(s)
- Filipa Marcelo
- Departamento de Química, Faculdade de Ciências e Tecnologia, UCIBIO, REQUIMTE, 2829-516 Caparica, Portugal
| | - Nitin Supekar
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| | - Francisco Corzana
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, E-26006 Logroño, Spain
| | - Joost C van der Horst
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Ilona M Vuist
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - David Live
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| | - Geert-Jan P H Boons
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| | - David F Smith
- Department of Biochemistry, Emory Comprehensive Glycomics Center, Emory University School of Medicine, Atlanta, Georgia 30322
| | - Sandra J van Vliet
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands.
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15
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Identification of mesothelioma-specific sialylated epitope recognized with monoclonal antibody SKM9-2 in a mucin-like membrane protein HEG1. Sci Rep 2018; 8:14251. [PMID: 30250045 PMCID: PMC6155162 DOI: 10.1038/s41598-018-32534-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 09/10/2018] [Indexed: 12/14/2022] Open
Abstract
The anti-mesothelioma mAb SKM9-2 recognizes the sialylated protein HEG homolog 1 (HEG1). HEG1 is a 400 kDa mucin-like membrane protein found on mesothelioma. SKM9-2 can detect mesothelioma more specifically and sensitively than other antibodies against current mesothelioma markers; therefore, SKM9-2 would be likely useful for the precise detection and diagnosis of malignant mesothelioma. In the present study, we investigated the epitope of SKM9-2. We analyzed the binding of SKM9-2 to truncated HEG1 and candidate epitope-fused glycosylphosphatidylinositol-anchor proteins. The epitope of SKM9-2 was identified as an O-glycosylated region, 893-SKSPSLVSLPT-903, in HEG1. An alanine scanning assay of the epitope showed that SKM9-2 bound to a simple epitope in HEG1, and the SKxPSxVS sequence within the epitope was essential for SKM9-2 recognition. Mass spectrometry analysis and lectin binding analysis of soluble epitope peptides indicated that the SKM9-2 epitope, in which Ser897 was not glycosylated, contained two disialylated core 1 O-linked glycan-modified serine residues, Ser893 and Ser900. Neuraminidase treatment analysis also confirmed that the epitope in mesothelioma cells contained a similar glycan modification. The specific detection of mesothelioma with SKM9-2 can thus be performed by the recognition of sialylated glycan modification in the specific region of HEG1.
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16
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Corfield AP. The Interaction of the Gut Microbiota with the Mucus Barrier in Health and Disease in Human. Microorganisms 2018; 6:microorganisms6030078. [PMID: 30072673 PMCID: PMC6163557 DOI: 10.3390/microorganisms6030078] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 07/25/2018] [Accepted: 07/30/2018] [Indexed: 02/07/2023] Open
Abstract
Glycoproteins are major players in the mucus protective barrier in the gastrointestinal and other mucosal surfaces. In particular the mucus glycoproteins, or mucins, are responsible for the protective gel barrier. They are characterized by their high carbohydrate content, present in their variable number, tandem repeat domains. Throughout evolution the mucins have been maintained as integral components of the mucosal barrier, emphasizing their essential biological status. The glycosylation of the mucins is achieved through a series of biosynthetic pathways processes, which generate the wide range of glycans found in these molecules. Thus mucins are decorated with molecules having information in the form of a glycocode. The enteric microbiota interacts with the mucosal mucus barrier in a variety of ways in order to fulfill its many normal processes. How bacteria read the glycocode and link to normal and pathological processes is outlined in the review.
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Affiliation(s)
- Anthony P Corfield
- Mucin Research Group, School of Clinical Sciences, Bristol Royal Infirmary, Level 7, Marlborough Street, Bristol BS2 8HW, UK.
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17
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Bermejo IA, Usabiaga I, Compañón I, Castro-López J, Insausti A, Fernández JA, Avenoza A, Busto JH, Jiménez-Barbero J, Asensio JL, Peregrina JM, Jiménez-Osés G, Hurtado-Guerrero R, Cocinero EJ, Corzana F. Water Sculpts the Distinctive Shapes and Dynamics of the Tumor-Associated Carbohydrate Tn Antigens: Implications for Their Molecular Recognition. J Am Chem Soc 2018; 140:9952-9960. [PMID: 30004703 DOI: 10.1021/jacs.8b04801] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The tumor-associated carbohydrate Tn antigens include two variants, αGalNAc- O-Thr and αGalNAc- O-Ser. In solution, they exhibit dissimilar shapes and dynamics and bind differently to the same protein receptor. Here, we demonstrate experimentally and theoretically that their conformational preferences in the gas phase are highly similar, revealing the essential role of water. We propose that water molecules prompt the rotation around the glycosidic linkage in the threonine derivative, shielding its hydrophobic methyl group and allowing an optimal solvation of the polar region of the antigen. The unusual arrangement of αGalNAc- O-Thr features a water molecule bound into a "pocket" between the sugar and the threonine. This mechanism is supported by trapping, for the first time, such localized water in the crystal structures of an antibody bound to two glycopeptides that comprise fluorinated Tn antigens in their structure. According to several reported X-ray structures, installing oxygenated amino acids in specific regions of the receptor capable of displacing the bridging water molecule to the bulk-solvent may facilitate the molecular recognition of the Tn antigen with threonine. Overall, our data also explain how water fine-tunes the 3D structure features of similar molecules, which in turn are behind their distinct biological activities.
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Affiliation(s)
- Iris A Bermejo
- Departamento de Química, Centro de Investigación en Síntesis Química , Universidad de La Rioja , 26006 Logroño , Spain
| | - Imanol Usabiaga
- Departamento de Química Física, Facultad de Ciencia y Tecnología , Universidad del País Vasco (UPV-EHU), 48080 Bilbao , Spain
| | - Ismael Compañón
- Departamento de Química, Centro de Investigación en Síntesis Química , Universidad de La Rioja , 26006 Logroño , Spain
| | - Jorge Castro-López
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza , BIFI-IQFR (CSIC), 50018 Zaragoza , Spain
| | - Aran Insausti
- Departamento de Química Física, Facultad de Ciencia y Tecnología , Universidad del País Vasco (UPV-EHU), 48080 Bilbao , Spain.,Biofisika Institute (CSIC, UPV/EHU), University of the Basque Country (UPV/EHU), 48940 Leioa , Spain
| | - José A Fernández
- Departamento de Química Física, Facultad de Ciencia y Tecnología , Universidad del País Vasco (UPV-EHU), 48080 Bilbao , Spain
| | - Alberto Avenoza
- Departamento de Química, Centro de Investigación en Síntesis Química , Universidad de La Rioja , 26006 Logroño , Spain
| | - Jesús H Busto
- Departamento de Química, Centro de Investigación en Síntesis Química , Universidad de La Rioja , 26006 Logroño , Spain
| | - Jesús Jiménez-Barbero
- CIC bioGUNE , Bizkaia Technology Park, Building 801A , 48170 Derio , Spain.,Ikerbasque , Basque Foundation for Science , Maria Diaz de Haro 13 , 48009 Bilbao , Spain.,Department of Organic Chemistry II, Faculty of Science & Technology , University of the Basque Country , 48940 Leioa , Spain
| | - Juan L Asensio
- Instituto de Química Orgánica General , IQOG-CSIC. 28006 Madrid , Spain
| | - Jesús M Peregrina
- Departamento de Química, Centro de Investigación en Síntesis Química , Universidad de La Rioja , 26006 Logroño , Spain
| | - Gonzalo Jiménez-Osés
- Departamento de Química, Centro de Investigación en Síntesis Química , Universidad de La Rioja , 26006 Logroño , Spain
| | - Ramón Hurtado-Guerrero
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza , BIFI-IQFR (CSIC), 50018 Zaragoza , Spain.,Fundación ARAID , 50018 Zaragoza , Spain
| | - Emilio J Cocinero
- Departamento de Química Física, Facultad de Ciencia y Tecnología , Universidad del País Vasco (UPV-EHU), 48080 Bilbao , Spain.,Biofisika Institute (CSIC, UPV/EHU), University of the Basque Country (UPV/EHU), 48940 Leioa , Spain
| | - Francisco Corzana
- Departamento de Química, Centro de Investigación en Síntesis Química , Universidad de La Rioja , 26006 Logroño , Spain
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18
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Hoja-Łukowicz D, Szwed S, Laidler P, Lityńska A. Proteomic analysis of Tn-bearing glycoproteins from different stages of melanoma cells reveals new biomarkers. Biochimie 2018; 151:14-26. [PMID: 29802864 DOI: 10.1016/j.biochi.2018.05.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 05/21/2018] [Indexed: 12/23/2022]
Abstract
Cutaneous melanoma, the most aggressive form of skin cancer, responds poorly to conventional therapy. The appearance of Tn antigen-modified proteins in cancer is correlated with metastasis and poor prognoses. The Tn determinant has been recognized as a powerful diagnostic and therapeutic target, and as an object for the development of anti-tumor vaccine strategies. This study was designed to identify Tn-carrying proteins and reveal their influence on cutaneous melanoma progression. We used a lectin-based strategy to purify Tn antigen-enriched cellular glycoproteome, the LC-MS/MS method to identify isolated glycoproteins, and the DAVID bioinformatics tool to classify the identified proteins. We identified 146 different Tn-bearing glycoproteins, 88% of which are new. The Tn-glycoproteome was generally enriched in proteins involved in the control of ribosome biogenesis, CDR-mediated mRNA stabilization, cell-cell adhesion and extracellular vesicle formation. The differential expression patterns of Tn-modified proteins for cutaneous primary and metastatic melanoma cells supported nonmetastatic and metastatic cell phenotypes, respectively. To our knowledge, this study is the first large-scale proteomic analysis of Tn-bearing proteins in human melanoma cells. The identified Tn-modified proteins are related to the biological and molecular nature of cutaneous melanoma and may be valuable biomarkers and therapeutic targets.
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Affiliation(s)
- Dorota Hoja-Łukowicz
- Department of Glycoconjugate Biochemistry, Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9, 30-387, Krakow, Poland.
| | - Sabina Szwed
- Department of Glycoconjugate Biochemistry, Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9, 30-387, Krakow, Poland.
| | - Piotr Laidler
- Department of Medical Biochemistry, Jagiellonian University Medical College, Kopernika 7, 31-034, Krakow, Poland.
| | - Anna Lityńska
- Department of Glycoconjugate Biochemistry, Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9, 30-387, Krakow, Poland.
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19
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Ghirardello M, Perrone D, Chinaglia N, Sádaba D, Delso I, Tejero T, Marchesi E, Fogagnolo M, Rafie K, van Aalten DMF, Merino P. UDP-GlcNAc Analogues as Inhibitors of O-GlcNAc Transferase (OGT): Spectroscopic, Computational, and Biological Studies. Chemistry 2018. [PMID: 29513364 DOI: 10.1002/chem.201801083] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A series of glycomimetics of UDP-GlcNAc, in which the β-phosphate has been replaced by either an alkyl chain or a triazolyl ring and the sugar moiety has been replaced by a pyrrolidine ring, has been synthesized by the application of different click-chemistry procedures. Their affinities for human O-GlcNAc transferase (hOGT) have been evaluated and studied both spectroscopically and computationally. The binding epitopes of the best ligands have been determined in solution by means of saturation transfer difference (STD) NMR spectroscopy. Experimental, spectroscopic, and computational results are in agreement, pointing out the essential role of the binding of β-phosphate. We have found that the loss of interactions from the β-phosphate can be counterbalanced by the presence of hydrophobic groups at a pyrroline ring acting as a surrogate of the carbohydrate unit. Two of the prepared glycomimetics show inhibition at a micromolar level.
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Affiliation(s)
- Mattia Ghirardello
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza, CSIC, 50009, Zaragoza, Spain
| | - Daniela Perrone
- Department of Chemical and Pharmaceutical Sciences, Università degli Studi di Ferrara, 44121, Ferrara, Italy
| | - Nicola Chinaglia
- Department of Chemical and Pharmaceutical Sciences, Università degli Studi di Ferrara, 44121, Ferrara, Italy
| | - David Sádaba
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza, CSIC, 50009, Zaragoza, Spain
| | - Ignacio Delso
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza, CSIC, 50009, Zaragoza, Spain
| | - Tomas Tejero
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza, CSIC, 50009, Zaragoza, Spain
| | - Elena Marchesi
- Department of Chemical and Pharmaceutical Sciences, Università degli Studi di Ferrara, 44121, Ferrara, Italy
| | - Marco Fogagnolo
- Department of Chemical and Pharmaceutical Sciences, Università degli Studi di Ferrara, 44121, Ferrara, Italy
| | - Karim Rafie
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee, DD1 5EH, UK
| | - Daan M F van Aalten
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee, DD1 5EH, UK
| | - Pedro Merino
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, 50009, Zaragoza, Spain
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20
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Martínez-Sáez N, Peregrina JM, Corzana F. Principles of mucin structure: implications for the rational design of cancer vaccines derived from MUC1-glycopeptides. Chem Soc Rev 2018; 46:7154-7175. [PMID: 29022615 DOI: 10.1039/c6cs00858e] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Cancer is currently one of the world's most serious public health problems. Significant efforts are being made to develop new strategies that can eradicate tumours selectively without detrimental effects to healthy cells. One promising approach is focused on the design of vaccines that contain partially glycosylated mucins in their formulation. Although some of these vaccines are in clinical trials, a lack of knowledge about the molecular basis that governs the antigen presentation, and the interactions between antigens and the elicited antibodies has limited their success thus far. This review focuses on the most significant milestones achieved to date in the conformational analysis of tumour-associated MUC1 derivatives both in solution and bound to antibodies. The effect that the carbohydrate scaffold has on the peptide backbone structure and the role of the sugar in molecular recognition by antibodies are emphasised. The outcomes summarised in this review may be a useful guide to develop new antigens for the design of cancer vaccines in the near future.
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Affiliation(s)
- Nuria Martínez-Sáez
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño, Spain.
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21
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You X, Qin H, Ye M. Recent advances in methods for the analysis of protein o-glycosylation at proteome level. J Sep Sci 2017; 41:248-261. [PMID: 28988430 DOI: 10.1002/jssc.201700834] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 09/15/2017] [Accepted: 09/16/2017] [Indexed: 12/12/2022]
Abstract
O-Glycosylation, which refers to the glycosylation of the hydroxyl group of side chains of Serine/Threonine/Tyrosine residues, is one of the most common post-translational modifications. Compared with N-linked glycosylation, O-glycosylation is less explored because of its complex structure and relatively low abundance. Recently, O-glycosylation has drawn more and more attention for its various functions in many sophisticated biological processes. To obtain a deep understanding of O-glycosylation, many efforts have been devoted to develop effective strategies to analyze the two most abundant types of O-glycosylation, i.e. O-N-acetylgalactosamine and O-N-acetylglucosamine glycosylation. In this review, we summarize the proteomics workflows to analyze these two types of O-glycosylation. For the large-scale analysis of mucin-type glycosylation, the glycan simplification strategies including the ''SimpleCell'' technology were introduced. A variety of enrichment methods including lectin affinity chromatography, hydrophilic interaction chromatography, hydrazide chemistry, and chemoenzymatic method were introduced for the proteomics analysis of O-N-acetylgalactosamine and O-N-acetylglucosamine glycosylation.
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Affiliation(s)
- Xin You
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Hongqiang Qin
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Mingliang Ye
- CAS Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China.,University of Chinese Academy of Sciences, Beijing, China
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22
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Artigas G, Monteiro JT, Hinou H, Nishimura SI, Lepenies B, Garcia-Martin F. Glycopeptides as Targets for Dendritic Cells: Exploring MUC1 Glycopeptides Binding Profile toward Macrophage Galactose-Type Lectin (MGL) Orthologs. J Med Chem 2017; 60:9012-9021. [PMID: 29045792 DOI: 10.1021/acs.jmedchem.7b01242] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The macrophage galactose-type lectin (MGL) recognizes glycan moieties exposed by pathogens and malignant cells. Particularly, mucin-1 (MUC1) glycoprotein presents an altered glycosylation in several cancers. To estimate the ability of distinct MGL orthologs to recognize aberrant glycan cores in mucins, we applied evanescent-field detection to a versatile MUC1-like glycopeptide microarray platform. Here, as binding was sequence-dependent, we demonstrated that not only sugars but also peptide region impact the recognition of murine MGL1 (mMGL1). In addition, we observed for all three MGL orthologs that divalent glycan presentation increased the binding. To assess the utility of the glycopeptide binders of the MGL orthologs for MGL targeting, we performed uptake assays with fluorescein-MUC1 using murine dendritic cells. A diglycosylated MUC1 peptide was preferentially internalized in an MGL-dependent fashion, thus showing the utility for divalent MGL targeting. These findings may be relevant to a rational design of antitumor vaccines targeting dendritic cells via MGL.
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Affiliation(s)
- Gerard Artigas
- Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University , N21, W11, Kita-ku, 001-0021 Sapporo, Japan
| | - João T Monteiro
- Immunology Unit & Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover , Bünteweg 17, 30559 Hannover, Germany
| | - Hiroshi Hinou
- Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University , N21, W11, Kita-ku, 001-0021 Sapporo, Japan.,Medicinal Chemistry Pharmaceuticals, Co., Ltd. N9W15, Chuo-ku, 060-0009 Sapporo, Japan
| | - Shin-Ichiro Nishimura
- Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University , N21, W11, Kita-ku, 001-0021 Sapporo, Japan.,Medicinal Chemistry Pharmaceuticals, Co., Ltd. N9W15, Chuo-ku, 060-0009 Sapporo, Japan
| | - Bernd Lepenies
- Immunology Unit & Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover , Bünteweg 17, 30559 Hannover, Germany
| | - Fayna Garcia-Martin
- Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University , N21, W11, Kita-ku, 001-0021 Sapporo, Japan
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23
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Gibadullin R, Farnsworth DW, Barchi JJ, Gildersleeve JC. GalNAc-Tyrosine Is a Ligand of Plant Lectins, Antibodies, and Human and Murine Macrophage Galactose-Type Lectins. ACS Chem Biol 2017. [PMID: 28644609 DOI: 10.1021/acschembio.7b00471] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
In 2011, a new type of protein O-glycosylation was discovered in which N-acetylgalactosamine is attached to the side chain of tyrosine (GalNAc-Tyr). While present on dozens of proteins, the biological roles of GalNAc-Tyr are unknown. To gain insight into this new type of modification, we synthesized a group of GalNAc-Tyr glycopeptides, constructed microarrays, and evaluated potential recognition of GalNAc-Tyr by a series of glycan-binding proteins. Through a series of >150 microarray experiments, we assessed binding properties of a variety of plant lectins, monoclonal antibodies, and endogenous lectins. VVL, HPA, and SBA were all found to bind tightly to GalNAc-Tyr, and several Tn binding antibodies and blood group A antibodies were found to cross-react with GalNAc-Tyr. Thus, detection of GalNAc-Tyr modified proteins is an important consideration when analyzing results from these reagents. Additionally, we evaluated potential recognition by two mammalian lectins, human (hMGL) and murine (mMGL-2) macrophage galactose type C-type lectins. Both hMGL and mMGL-2 bound tightly to GalNAc-Tyr determinants. The apparent Kd values (∼1-40 nM) were on par with some of the best known ligands for MGL, such as the Tn antigen. hMGL also bound the natural beta-amyloid peptide containing a GalNAc-Tyr epitope. STD NMR experiments provided structural insights into the molecular basis of recognition. Finally, GalNAc-Tyr was selectively captured by mMGL-2 positive dendritic cells. These results provide the first evidence that GalNAc-Tyr modified proteins and/or peptides may be ligands for hMGL and mMGL-2 and offer unique structures for the design of MGL targeting agents.
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Affiliation(s)
- Ruslan Gibadullin
- Chemical
Biology Laboratory, National Cancer Institute, National Institutes of Health, 376 Boyles St., Frederick, Maryland 21702, United States
| | - David Wayne Farnsworth
- Chemical
Biology Laboratory, National Cancer Institute, National Institutes of Health, 376 Boyles St., Frederick, Maryland 21702, United States
| | - Joseph J. Barchi
- Chemical
Biology Laboratory, National Cancer Institute, National Institutes of Health, 376 Boyles St., Frederick, Maryland 21702, United States
| | - Jeffrey C. Gildersleeve
- Chemical
Biology Laboratory, National Cancer Institute, National Institutes of Health, 376 Boyles St., Frederick, Maryland 21702, United States
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24
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Poiroux G, Barre A, van Damme EJM, Benoist H, Rougé P. Plant Lectins Targeting O-Glycans at the Cell Surface as Tools for Cancer Diagnosis, Prognosis and Therapy. Int J Mol Sci 2017; 18:ijms18061232. [PMID: 28598369 PMCID: PMC5486055 DOI: 10.3390/ijms18061232] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 05/26/2017] [Accepted: 05/31/2017] [Indexed: 12/30/2022] Open
Abstract
Aberrant O-glycans expressed at the surface of cancer cells consist of membrane-tethered glycoproteins (T and Tn antigens) and glycolipids (Lewis a, Lewis x and Forssman antigens). All of these O-glycans have been identified as glyco-markers of interest for the diagnosis and the prognosis of cancer diseases. These epitopes are specifically detected using T/Tn-specific lectins isolated from various plants such as jacalin from Artocarpus integrifola, and fungi such as the Agaricus bisporus lectin. These lectins accommodate T/Tn antigens at the monosaccharide-binding site; residues located in the surrounding extended binding-site of the lectins often participate in the binding of more extended epitopes. Depending on the shape and size of the extended carbohydrate-binding site, their fine sugar-binding specificity towards complex O-glycans readily differs from one lectin to another, resulting in a great diversity in their sugar-recognition capacity. T/Tn-specific lectins have been extensively used for the histochemical detection of cancer cells in biopsies and for the follow up of the cancer progression and evolution. T/Tn-specific lectins also induce a caspase-dependent apoptosis in cancer cells, often associated with a more or less severe inhibition of proliferation. Moreover, they provide another potential source of molecules adapted to the building of photosensitizer-conjugates allowing a specific targeting to cancer cells, for the photodynamic treatment of tumors.
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Affiliation(s)
- Guillaume Poiroux
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche, Centre de Recherche en Cancérologie de Toulouse, 31037 Toulouse, France.
| | - Annick Barre
- Unité Mixte de Recherche, 152 PharmaDev, Institut de Recherche et Développement, Faculté de Pharmacie, 35 Chemin des Maraîchers Université Paul Sabatier, 31062 Toulouse, France.
| | - Els J M van Damme
- Department of Molecular Biotechnology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, B-9000 Ghent, Belgium.
| | - Hervé Benoist
- Unité Mixte de Recherche, 152 PharmaDev, Institut de Recherche et Développement, Faculté de Pharmacie, 35 Chemin des Maraîchers Université Paul Sabatier, 31062 Toulouse, France.
| | - Pierre Rougé
- Unité Mixte de Recherche, 152 PharmaDev, Institut de Recherche et Développement, Faculté de Pharmacie, 35 Chemin des Maraîchers Université Paul Sabatier, 31062 Toulouse, France.
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25
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Persson N, Stuhr-Hansen N, Risinger C, Mereiter S, Polónia A, Polom K, Kovács A, Roviello F, Reis CA, Welinder C, Danielsson L, Jansson B, Blixt O. Epitope mapping of a new anti-Tn antibody detecting gastric cancer cells. Glycobiology 2017; 27:635-645. [DOI: 10.1093/glycob/cwx033] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 04/11/2017] [Indexed: 12/15/2022] Open
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26
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Leiria Campo V, Riul TB, Oliveira Bortot L, Martins-Teixeira MB, Fiori Marchiori M, Iaccarino E, Ruvo M, Dias-Baruffi M, Carvalho I. A Synthetic MUC1 Glycopeptide Bearing βGalNAc-Thr as a Tn Antigen Isomer Induces the Production of Antibodies against Tumor Cells. Chembiochem 2017; 18:527-538. [PMID: 28068458 DOI: 10.1002/cbic.201600473] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 01/05/2017] [Indexed: 01/01/2023]
Abstract
This study presents the synthesis of the novel protected O-glycosylated amino acid derivatives 1 and 2, containing βGalNAc-SerOBn and βGalNAc-ThrOBn units, respectively, as mimetics of the natural Tn antigen (αGalNAc-Ser/Thr), along with the solid-phase assembly of the glycopeptides NHAcSer-Ala-Pro-Asp-Thr[αGalNAc]-Arg-Pro-Ala-Pro-Gly-BSA (3-BSA) and NHAcSer-Ala-Pro-Asp-Thr[βGalNAc]-Arg-Pro-Ala-Pro-Gly-BSA (4-BSA), bearing αGalNAc-Thr or βGalNAc-Thr units, respectively, as mimetics of MUC1 tumor mucin glycoproteins. According to ELISA tests, immunizations of mice with βGalNAc-glycopeptide 4-BSA induced higher sera titers (1:320 000) than immunizations with αGalNAc-glycopeptide 3-BSA (1:40 000). Likewise, flow cytometry assays showed higher capacity of the obtained anti-glycopeptide 4-BSA antibodies to recognize MCF-7 tumor cells. Cross-recognition between immunopurified anti-βGalNAc antibodies and αGalNAc-glycopeptide and vice versa was also verified. Lastly, molecular dynamics simulations and surface plasmon resonance (SPR) showed that βGalNAc-glycopeptide 4 can interact with a model antitumor monoclonal antibody (SM3). Taken together, these data highlight the improved immunogenicity of the unnatural glycopeptide 4-BSA, bearing βGalNAc-Thr as Tn antigen isomer.
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Affiliation(s)
- Vanessa Leiria Campo
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Café S/N, CEP, 14040-903, Ribeirão Preto, São Paulo, Brazil
| | - Thalita B Riul
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Café S/N, CEP, 14040-903, Ribeirão Preto, São Paulo, Brazil
| | - Leandro Oliveira Bortot
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Café S/N, CEP, 14040-903, Ribeirão Preto, São Paulo, Brazil
| | - Maristela B Martins-Teixeira
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Café S/N, CEP, 14040-903, Ribeirão Preto, São Paulo, Brazil
| | - Marcelo Fiori Marchiori
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Café S/N, CEP, 14040-903, Ribeirão Preto, São Paulo, Brazil
| | - Emanuela Iaccarino
- Istituto di Biostrutture e Bioimmagini, CNR, via Mezzocannone 16, 80134, Napoli, Italy.,Second University of Naples, via Vivaldi 43, 81100, Caserta, Italy
| | - Menotti Ruvo
- Istituto di Biostrutture e Bioimmagini, CNR, via Mezzocannone 16, 80134, Napoli, Italy
| | - Marcelo Dias-Baruffi
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Café S/N, CEP, 14040-903, Ribeirão Preto, São Paulo, Brazil
| | - Ivone Carvalho
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Café S/N, CEP, 14040-903, Ribeirão Preto, São Paulo, Brazil
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27
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Ghirardello M, Delso I, Tejero T, Merino P. Synthesis of Amino-Acid-Nucleoside Conjugates. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600497] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mattia Ghirardello
- Departamento de Síntesis y Estructura de Biomoléculas; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza. CSIC; 50009 Zaragoza Aragón Spain
| | - Ignacio Delso
- Departamento de Síntesis y Estructura de Biomoléculas; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza. CSIC; 50009 Zaragoza Aragón Spain
- Servicio De Resonancia Magnética Nuclear; Centro de Química y Materiales de Aragón (CEQMA); Universidad de Zaragoza, CSIC; 50009 Zaragoza Aragón Spain
| | - Tomas Tejero
- Departamento de Síntesis y Estructura de Biomoléculas; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza. CSIC; 50009 Zaragoza Aragón Spain
| | - Pedro Merino
- Departamento de Síntesis y Estructura de Biomoléculas; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza. CSIC; 50009 Zaragoza Aragón Spain
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28
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Jiménez-Moreno E, Montalvillo-Jiménez L, Santana AG, Gómez AM, Jiménez-Osés G, Corzana F, Bastida A, Jiménez-Barbero J, Cañada FJ, Gómez-Pinto I, González C, Asensio JL. Finding the Right Candidate for the Right Position: A Fast NMR-Assisted Combinatorial Method for Optimizing Nucleic Acids Binders. J Am Chem Soc 2016; 138:6463-74. [DOI: 10.1021/jacs.6b00328] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ester Jiménez-Moreno
- Instituto de Química Orgánica (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | | | - Andrés G. Santana
- Instituto de Química Orgánica (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Ana M. Gómez
- Instituto de Química Orgánica (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Gonzalo Jiménez-Osés
- Departamento de Química y Centro de Investigación en
Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
- Institute of Biocomputation and Physics of Complex Systems
(BIFI), University of Zaragoza, BIFI-IQFR (CSIC), 50018 Zaragoza, Spain
| | - Francisco Corzana
- Departamento de Química y Centro de Investigación en
Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
| | - Agatha Bastida
- Instituto de Química Orgánica (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Jesús Jiménez-Barbero
- Centro de Investigaciones Biológicas (CIB-CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain
- Center for Cooperative Research in Biosciences (CIC-bioGUNE), 48160 Derio, Bizkaia, Spain
- Basque Foundation for Science, Ikerbasque, 48013 Bilbao, Bizkaia, Spain
| | | | - Irene Gómez-Pinto
- Instituto de Química-Física Rocasolano (IQFR-CSIC), C/ Serrano 119, 28006 Madrid, Spain
| | - Carlos González
- Instituto de Química-Física Rocasolano (IQFR-CSIC), C/ Serrano 119, 28006 Madrid, Spain
| | - Juan Luis Asensio
- Instituto de Química Orgánica (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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29
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Ardá A, Bosco R, Sastre J, Cañada FJ, André S, Gabius HJ, Richichi B, Jiménez-Barbero J, Nativi C. Structural Insights into the Binding of Sugar Receptors (Lectins) to a Synthetic Tricyclic Tn Mimetic and Its Glycopeptide Version. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500874] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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30
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Coelho H, Matsushita T, Artigas G, Hinou H, Cañada FJ, Lo-Man R, Leclerc C, Cabrita EJ, Jiménez-Barbero J, Nishimura SI, Garcia-Martín F, Marcelo F. The Quest for Anticancer Vaccines: Deciphering the Fine-Epitope Specificity of Cancer-Related Monoclonal Antibodies by Combining Microarray Screening and Saturation Transfer Difference NMR. J Am Chem Soc 2015; 137:12438-41. [PMID: 26366611 DOI: 10.1021/jacs.5b06787] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The identification of MUC1 tumor-associated Tn antigen (αGalpNAc1-O-Ser/Thr) has boosted the development of anticancer vaccines. Combining microarrays and saturation transfer difference NMR, we have characterized the fine-epitope mapping of a MUC1 chemical library (naked and Tn-glycosylated) toward two families of cancer-related monoclonal antibodies (anti-MUC1 and anti-Tn mAbs). Anti-MUC1 mAbs clone VU-3C6 and VU-11E2 recognize naked MUC1-derived peptides and bind GalNAc in a peptide-sequence-dependent manner. In contrast, anti-Tn mAbs clone 8D4 and 14D6 mostly recognize the GalNAc and do not bind naked MUC1-derived peptides. These anti-Tn mAbs show a clear preference for glycopeptides containing the Tn-Ser antigen rather than the Tn-Thr analogue, stressing the role of the underlying amino acid (serine or threonine) in the binding process. The reported strategy can be employed, in general, to unveil the key minimal structural features that modulate antigen-antibody recognition, with particular relevance for the development of Tn-MUC1-based anticancer vaccines.
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Affiliation(s)
- Helena Coelho
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa , 2829-516 Caparica, Portugal
| | - Takahiko Matsushita
- Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University , Kita-ku, Sapporo 001-0021, Japan
| | - Gerard Artigas
- Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University , Kita-ku, Sapporo 001-0021, Japan
| | - Hiroshi Hinou
- Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University , Kita-ku, Sapporo 001-0021, Japan
| | - F Javier Cañada
- Centro de Investigaciones Biológicas, CIB-CSIC , 28040 Madrid, Spain
| | - Richard Lo-Man
- Unité de Régulation Immunitaire et Vaccinologie, Equipe Labellisée Ligue Contre le Cancer, Paris, Institut Pasteur , 75724 Paris Cedex 15, France.,INSERM U1041 , 75724 Paris Cedex 15, France
| | - Claude Leclerc
- Unité de Régulation Immunitaire et Vaccinologie, Equipe Labellisée Ligue Contre le Cancer, Paris, Institut Pasteur , 75724 Paris Cedex 15, France.,INSERM U1041 , 75724 Paris Cedex 15, France
| | - Eurico J Cabrita
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa , 2829-516 Caparica, Portugal
| | - Jesús Jiménez-Barbero
- CIC bioGUNE Bizkaia , 48160 Derio, Spain.,Ikerbasque, Basque Foundation for Science , 48005 Bilbao, Spain
| | - Shin-Ichiro Nishimura
- Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University , Kita-ku, Sapporo 001-0021, Japan
| | - Fayna Garcia-Martín
- Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University , Kita-ku, Sapporo 001-0021, Japan
| | - Filipa Marcelo
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa , 2829-516 Caparica, Portugal
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Martínez-Sáez N, Castro-López J, Valero-González J, Madariaga D, Compañón I, Somovilla VJ, Salvadó M, Asensio JL, Jiménez-Barbero J, Avenoza A, Busto JH, Bernardes GJL, Peregrina JM, Hurtado-Guerrero R, Corzana F. Deciphering the Non-Equivalence of Serine and Threonine O-Glycosylation Points: Implications for Molecular Recognition of the Tn Antigen by an anti-MUC1 Antibody. Angew Chem Int Ed Engl 2015; 54:9830-4. [PMID: 26118689 PMCID: PMC4552995 DOI: 10.1002/anie.201502813] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 05/06/2015] [Indexed: 11/11/2022]
Abstract
The structural features of MUC1-like glycopeptides bearing the Tn antigen (α-O-GalNAc-Ser/Thr) in complex with an anti MUC-1 antibody are reported at atomic resolution. For the α-O-GalNAc-Ser derivative, the glycosidic linkage adopts a high-energy conformation, barely populated in the free state. This unusual structure (also observed in an α-S-GalNAc-Cys mimic) is stabilized by hydrogen bonds between the peptidic fragment and the sugar. The selection of a particular peptide structure by the antibody is thus propagated to the carbohydrate through carbohydrate/peptide contacts, which force a change in the orientation of the sugar moiety. This seems to be unfeasible in the α-O-GalNAc-Thr glycopeptide owing to the more limited flexibility of the side chain imposed by the methyl group. Our data demonstrate the non-equivalence of Ser and Thr O-glycosylation points in molecular recognition processes. These features provide insight into the occurrence in nature of the APDTRP epitope for anti-MUC1 antibodies.
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Affiliation(s)
- Nuria Martínez-Sáez
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain).,Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW (UK)
| | - Jorge Castro-López
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, BIFI-IQFR (CSIC) Joint Unit, Edificio I+D, 50018 Zaragoza (Spain).,Fundación ARAID, Edificio Pignatelli 36, Zaragoza (Spain)
| | - Jessika Valero-González
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, BIFI-IQFR (CSIC) Joint Unit, Edificio I+D, 50018 Zaragoza (Spain).,Fundación ARAID, Edificio Pignatelli 36, Zaragoza (Spain)
| | - David Madariaga
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain)
| | - Ismael Compañón
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain)
| | - Víctor J Somovilla
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain).,Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW (UK)
| | - Míriam Salvadó
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW (UK).,Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, C/Marcellí Domingo s/n, 43007 Tarragona (Spain)
| | - Juan L Asensio
- Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid (Spain)
| | - Jesús Jiménez-Barbero
- Structural Biology Unit, CIC bioGUNE, Parque Tecnológico de Bizkaia Building 801 A, 48160 Derio (Spain).,IKERBASQUE, Basque Foundation for Science, 48011 Bilbao (Spain).,Department of Chemical and Physical Biology, Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, 28040 Madrid (Spain)
| | - Alberto Avenoza
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain)
| | - Jesús H Busto
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain)
| | - Gonçalo J L Bernardes
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW (UK).,Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, 1649-028 Lisboa (Portugal)
| | - Jesús M Peregrina
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain).
| | - Ramón Hurtado-Guerrero
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, BIFI-IQFR (CSIC) Joint Unit, Edificio I+D, 50018 Zaragoza (Spain). .,Fundación ARAID, Edificio Pignatelli 36, Zaragoza (Spain).
| | - Francisco Corzana
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain).
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32
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Martínez-Sáez N, Castro-López J, Valero-González J, Madariaga D, Compañón I, Somovilla VJ, Salvadó M, Asensio JL, Jiménez-Barbero J, Avenoza A, Busto JH, Bernardes GJL, Peregrina JM, Hurtado-Guerrero R, Corzana F. Deciphering the Non-Equivalence of Serine and ThreonineO-Glycosylation Points: Implications for Molecular Recognition of the Tn Antigen by an anti-MUC1 Antibody. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502813] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Madariaga D, Martínez-Sáez N, Somovilla VJ, Coelho H, Valero-González J, Castro-López J, Asensio JL, Jiménez-Barbero J, Busto JH, Avenoza A, Marcelo F, Hurtado-Guerrero R, Corzana F, Peregrina JM. Detection of tumor-associated glycopeptides by lectins: the peptide context modulates carbohydrate recognition. ACS Chem Biol 2015; 10:747-56. [PMID: 25457745 DOI: 10.1021/cb500855x] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Tn antigen (α-O-GalNAc-Ser/Thr) is a convenient cancer biomarker that is recognized by antibodies and lectins. This work yields remarkable results for two plant lectins in terms of epitope recognition and reveals that these receptors show higher affinity for Tn antigen when it is incorporated in the Pro-Asp-Thr-Arg (PDTR) peptide region of mucin MUC1. In contrast, a significant affinity loss is observed when Tn antigen is located in the Ala-His-Gly-Val-Thr-Ser-Ala (AHGVTSA) or Ala-Pro-Gly-Ser-Thr-Ala-Pro (APGSTAP) fragments. Our data indicate that the charged residues, Arg and Asp, present in the PDTR sequence establish noteworthy fundamental interactions with the lectin surface as well as fix the conformation of the peptide backbone, favoring the presentation of the sugar moiety toward the lectin. These results may help to better understand glycopeptide-lectin interactions and may contribute to engineer new binding sites, allowing novel glycosensors for Tn antigen detection to be designed.
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Affiliation(s)
- David Madariaga
- Centro de Investigación
en Síntesis Química, Departamento de Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Nuria Martínez-Sáez
- Centro de Investigación
en Síntesis Química, Departamento de Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Víctor J. Somovilla
- Centro de Investigación
en Síntesis Química, Departamento de Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Helena Coelho
- Centro de Investigación
en Síntesis Química, Departamento de Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Jessika Valero-González
- Centro de Investigación
en Síntesis Química, Departamento de Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Jorge Castro-López
- Centro de Investigación
en Síntesis Química, Departamento de Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Juan L. Asensio
- Centro de Investigación
en Síntesis Química, Departamento de Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Jesús Jiménez-Barbero
- Centro de Investigación
en Síntesis Química, Departamento de Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Jesús H. Busto
- Centro de Investigación
en Síntesis Química, Departamento de Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Alberto Avenoza
- Centro de Investigación
en Síntesis Química, Departamento de Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Filipa Marcelo
- Centro de Investigación
en Síntesis Química, Departamento de Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Ramón Hurtado-Guerrero
- Centro de Investigación
en Síntesis Química, Departamento de Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Francisco Corzana
- Centro de Investigación
en Síntesis Química, Departamento de Química, Universidad de La Rioja, E-26006 Logroño, Spain
| | - Jesús M. Peregrina
- Centro de Investigación
en Síntesis Química, Departamento de Química, Universidad de La Rioja, E-26006 Logroño, Spain
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