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Pascoal C, Francisco R, Mexia P, Pereira BL, Granjo P, Coelho H, Barbosa M, dos Reis Ferreira V, Videira PA. Revisiting the immunopathology of congenital disorders of glycosylation: an updated review. Front Immunol 2024; 15:1350101. [PMID: 38550576 PMCID: PMC10972870 DOI: 10.3389/fimmu.2024.1350101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 02/26/2024] [Indexed: 04/02/2024] Open
Abstract
Glycosylation is a critical post-translational modification that plays a pivotal role in several biological processes, such as the immune response. Alterations in glycosylation can modulate the course of various pathologies, such as the case of congenital disorders of glycosylation (CDG), a group of more than 160 rare and complex genetic diseases. Although the link between glycosylation and immune dysfunction has already been recognized, the immune involvement in most CDG remains largely unexplored and poorly understood. In this study, we provide an update on the immune dysfunction and clinical manifestations of the 12 CDG with major immune involvement, organized into 6 categories of inborn errors of immunity according to the International Union of Immunological Societies (IUIS). The immune involvement in phosphomannomutase 2 (PMM2)-CDG - the most frequent CDG - was comprehensively reviewed, highlighting a higher prevalence of immune issues during infancy and childhood and in R141H-bearing genotypes. Finally, using PMM2-CDG as a model, we point to links between abnormal glycosylation patterns in host cells and possibly favored interactions with microorganisms that may explain the higher susceptibility to infection. Further characterizing immunopathology and unusual host-pathogen adhesion in CDG can not only improve immunological standards of care but also pave the way for innovative preventive measures and targeted glycan-based therapies that may improve quality of life for people living with CDG.
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Affiliation(s)
- Carlota Pascoal
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- UCIBIO– Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- CDG & Allies-Professionals and Patient Associations International Network, Caparica, Portugal
| | - Rita Francisco
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- UCIBIO– Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- CDG & Allies-Professionals and Patient Associations International Network, Caparica, Portugal
| | - Patrícia Mexia
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- UCIBIO– Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- CDG & Allies-Professionals and Patient Associations International Network, Caparica, Portugal
| | - Beatriz Luís Pereira
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- UCIBIO– Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- CDG & Allies-Professionals and Patient Associations International Network, Caparica, Portugal
| | - Pedro Granjo
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- UCIBIO– Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- CDG & Allies-Professionals and Patient Associations International Network, Caparica, Portugal
| | - Helena Coelho
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- UCIBIO – Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
| | - Mariana Barbosa
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- UCIBIO– Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- CDG & Allies-Professionals and Patient Associations International Network, Caparica, Portugal
| | - Vanessa dos Reis Ferreira
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- UCIBIO– Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- CDG & Allies-Professionals and Patient Associations International Network, Caparica, Portugal
| | - Paula Alexandra Videira
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- UCIBIO– Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- CDG & Allies-Professionals and Patient Associations International Network, Caparica, Portugal
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2
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Atxabal U, Nycholat C, Pröpster JM, Fernández A, Oyenarte I, Lenza MP, Franconetti A, Soares CO, Coelho H, Marcelo F, Schubert M, Paulson JC, Jiménez-Barbero J, Ereño-Orbea J. Unraveling Molecular Recognition of Glycan Ligands by Siglec-9 via NMR Spectroscopy and Molecular Dynamics Modeling. ACS Chem Biol 2024; 19:483-496. [PMID: 38321945 PMCID: PMC10877568 DOI: 10.1021/acschembio.3c00664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/09/2024] [Accepted: 01/16/2024] [Indexed: 02/08/2024]
Abstract
Human sialic-acid-binding immunoglobulin-like lectin-9 (Siglec-9) is a glycoimmune checkpoint receptor expressed on several immune cells. Binding of Siglec-9 to sialic acid containing glycans (sialoglycans) is well documented to modulate its functions as an inhibitory receptor. Here, we first assigned the amino acid backbone of the Siglec-9 V-set domain (Siglec-9d1), using well-established triple resonance three-dimensional nuclear magnetic resonance (NMR) methods. Then, we combined solution NMR and molecular dynamic simulation methods to decipher the molecular details of the interaction of Siglec-9 with the natural ligands α2,3 and α2,6 sialyl lactosamines (SLN), sialyl Lewis X (sLeX), and 6-O sulfated sLeX and with two synthetically modified sialoglycans that bind with high affinity. As expected, Neu5Ac is accommodated between the F and G β-strands at the canonical sialic acid binding site. Addition of a heteroaromatic scaffold 9N-5-(2-methylthiazol-4-yl)thiophene sulfonamide (MTTS) at the C9 position of Neu5Ac generates new interactions with the hydrophobic residues located at the G-G' loop and the N-terminal region of Siglec-9. Similarly, the addition of the aromatic substituent (5-N-(1-benzhydryl-1H-1,2,3-triazol-4-yl)methyl (BTC)) at the C5 position of Neu5Ac stabilizes the conformation of the long and flexible B'-C loop present in Siglec-9. These results expose the underlying mechanism responsible for the enhanced affinity and specificity for Siglec-9 for these two modified sialoglycans and sheds light on the rational design of the next generation of modified sialoglycans targeting Siglec-9.
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Affiliation(s)
- Unai Atxabal
- Chemical
Glycobiology Lab, Center for Cooperative Research in Biosciences (CIC
bioGUNE), Basque Research and Technology
Alliance (BRTA), 48160 Derio, Bizkaia, Spain
| | - Corwin Nycholat
- Departments
of Molecular Medicine and Immunology and Microbiology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Johannes M. Pröpster
- Institute
of Molecular Biology and Biophysics, ETH Zurich, 8093 Zurich, Switzerland
| | - Andrea Fernández
- Chemical
Glycobiology Lab, Center for Cooperative Research in Biosciences (CIC
bioGUNE), Basque Research and Technology
Alliance (BRTA), 48160 Derio, Bizkaia, Spain
| | - Iker Oyenarte
- Chemical
Glycobiology Lab, Center for Cooperative Research in Biosciences (CIC
bioGUNE), Basque Research and Technology
Alliance (BRTA), 48160 Derio, Bizkaia, Spain
| | - Maria Pia Lenza
- Chemical
Glycobiology Lab, Center for Cooperative Research in Biosciences (CIC
bioGUNE), Basque Research and Technology
Alliance (BRTA), 48160 Derio, Bizkaia, Spain
| | - Antonio Franconetti
- Chemical
Glycobiology Lab, Center for Cooperative Research in Biosciences (CIC
bioGUNE), Basque Research and Technology
Alliance (BRTA), 48160 Derio, Bizkaia, Spain
| | - 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
| | - 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
| | - 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
| | - Mario Schubert
- Institute
of Molecular Biology and Biophysics, ETH Zurich, 8093 Zurich, Switzerland
- Department
of Biosciences and Molecular Biology, University
of Salzburg, Hellbrunnerstrasse
34, 5020 Salzburg, Austria
| | - James C. Paulson
- Departments
of Molecular Medicine and Immunology and Microbiology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Jesús Jiménez-Barbero
- Chemical
Glycobiology Lab, Center for Cooperative Research in Biosciences (CIC
bioGUNE), Basque Research and Technology
Alliance (BRTA), 48160 Derio, Bizkaia, Spain
- Ikerbasque,
Basque Foundation for Science, Euskadi Pl., 5, 48009 Bilbao, Biscay, Spain
- Department
of Organic and Inorganic Chemistry, Faculty of Science and Technology, University of the Basque Country, EHU-UPV, 48940 Leioa, Bizkaia, Spain
- Centro
de Investigacion Biomedica en Red de Enfermedades Respiratorias, Av. Monforte de Lemos, 3-5, Pabellón
11, Planta 0, 28029 Madrid, Spain
| | - June Ereño-Orbea
- Chemical
Glycobiology Lab, Center for Cooperative Research in Biosciences (CIC
bioGUNE), Basque Research and Technology
Alliance (BRTA), 48160 Derio, Bizkaia, Spain
- Ikerbasque,
Basque Foundation for Science, Euskadi Pl., 5, 48009 Bilbao, Biscay, Spain
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3
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Lenza MP, Egia-Mendikute L, Antoñana-Vildosola A, Soares CO, Coelho H, Corzana F, Bosch A, Manisha P, Quintana JI, Oyenarte I, Unione L, Moure MJ, Azkargorta M, Atxabal U, Sobczak K, Elortza F, Sutherland JD, Barrio R, Marcelo F, Jiménez-Barbero J, Palazon A, Ereño-Orbea J. Structural insights into Siglec-15 reveal glycosylation dependency for its interaction with T cells through integrin CD11b. Nat Commun 2023; 14:3496. [PMID: 37311743 DOI: 10.1038/s41467-023-39119-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 05/26/2023] [Indexed: 06/15/2023] Open
Abstract
Sialic acid-binding Ig-like lectin 15 (Siglec-15) is an immune modulator and emerging cancer immunotherapy target. However, limited understanding of its structure and mechanism of action restrains the development of drug candidates that unleash its full therapeutic potential. In this study, we elucidate the crystal structure of Siglec-15 and its binding epitope via co-crystallization with an anti-Siglec-15 blocking antibody. Using saturation transfer-difference nuclear magnetic resonance (STD-NMR) spectroscopy and molecular dynamics simulations, we reveal Siglec-15 binding mode to α(2,3)- and α(2,6)-linked sialic acids and the cancer-associated sialyl-Tn (STn) glycoform. We demonstrate that binding of Siglec-15 to T cells, which lack STn expression, depends on the presence of α(2,3)- and α(2,6)-linked sialoglycans. Furthermore, we identify the leukocyte integrin CD11b as a Siglec-15 binding partner on human T cells. Collectively, our findings provide an integrated understanding of the structural features of Siglec-15 and emphasize glycosylation as a crucial factor in controlling T cell responses.
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Affiliation(s)
- Maria Pia Lenza
- Chemical Glycobiology lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160, Derio, Bizkaia, Spain
| | - Leire Egia-Mendikute
- Cancer Immunology and Immunotherapy Lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801A, 48160, Derio, Bizkaia, Spain
| | - Asier Antoñana-Vildosola
- Cancer Immunology and Immunotherapy Lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801A, 48160, Derio, Bizkaia, Spain
| | - Cátia O Soares
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, NOVA School of Science and Technology, Caparica campus, 2829-516, Caparica, Portugal
- UCIBIO, Department of Chemistry, NOVA School of Science and Technology, Caparica campus, 2829-516, Caparica, Portugal
| | - Helena Coelho
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, NOVA School of Science and Technology, Caparica campus, 2829-516, Caparica, Portugal
- UCIBIO, Department of Chemistry, NOVA School of Science and Technology, Caparica campus, 2829-516, Caparica, Portugal
| | - Francisco Corzana
- Department of Chemistry, University of La Rioja, The Center for Research in Chemical Synthesis, Madre de Dios 53, E-26006, Logroño, Spain
| | - Alexandre Bosch
- Cancer Immunology and Immunotherapy Lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801A, 48160, Derio, Bizkaia, Spain
| | - Prodhi Manisha
- Cancer Immunology and Immunotherapy Lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801A, 48160, Derio, Bizkaia, Spain
| | - Jon Imanol Quintana
- Chemical Glycobiology lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160, Derio, Bizkaia, Spain
| | - Iker Oyenarte
- Chemical Glycobiology lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160, Derio, Bizkaia, Spain
| | - Luca Unione
- Chemical Glycobiology lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160, Derio, Bizkaia, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - María Jesús Moure
- Chemical Glycobiology lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160, Derio, Bizkaia, Spain
| | - Mikel Azkargorta
- Proteomics Platform, CIC bioGUNE, CIBERehd, Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160, Derio, Spain
| | - Unai Atxabal
- Chemical Glycobiology lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160, Derio, Bizkaia, Spain
| | - Klaudia Sobczak
- Chemical Glycobiology lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160, Derio, Bizkaia, Spain
| | - Felix Elortza
- Proteomics Platform, CIC bioGUNE, CIBERehd, Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160, Derio, Spain
| | - James D Sutherland
- Ubiquitin-likes and Development Lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801A, 48160, Derio, Bizkaia, Spain
| | - Rosa Barrio
- Ubiquitin-likes and Development Lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801A, 48160, Derio, Bizkaia, Spain
| | - Filipa Marcelo
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, NOVA School of Science and Technology, Caparica campus, 2829-516, Caparica, Portugal
- UCIBIO, Department of Chemistry, NOVA School of Science and Technology, Caparica campus, 2829-516, Caparica, Portugal
| | - Jesús Jiménez-Barbero
- Chemical Glycobiology lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160, Derio, Bizkaia, Spain.
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain.
- Department of Organic & Inorganic Chemistry, Faculty of Science and Technology, University of the Basque Country, EHU-UPV, 48940, Leioa, Bizkaia, Spain.
- Centro de Investigacion Biomedica En Red de Enfermedades Respiratorias, 28029, Madrid, Spain.
| | - Asis Palazon
- Cancer Immunology and Immunotherapy Lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801A, 48160, Derio, Bizkaia, Spain.
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain.
| | - June Ereño-Orbea
- Chemical Glycobiology lab, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160, Derio, Bizkaia, Spain.
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain.
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4
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Lenza M, Atxabal U, Nycholat C, Oyenarte I, Franconetti A, Quintana JI, Delgado S, Núñez-Franco R, Garnica Marroquín CT, Coelho H, Unione L, Jiménez-Oses G, Marcelo F, Schubert M, Paulson JC, Jiménez-Barbero J, Ereño-Orbea J. Structures of the Inhibitory Receptor Siglec-8 in Complex with a High-Affinity Sialoside Analogue and a Therapeutic Antibody. JACS Au 2023; 3:204-215. [PMID: 36711084 PMCID: PMC9875244 DOI: 10.1021/jacsau.2c00592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/05/2022] [Accepted: 12/05/2022] [Indexed: 06/18/2023]
Abstract
Human sialic acid binding immunoglobulin-like lectin-8 (Siglec-8) is an inhibitory receptor that triggers eosinophil apoptosis and can inhibit mast cell degranulation when engaged by specific monoclonal antibodies (mAbs) or sialylated ligands. Thus, Siglec-8 has emerged as a critical negative regulator of inflammatory responses in diverse diseases, such as allergic airway inflammation. Herein, we have deciphered the molecular recognition features of the interaction of Siglec-8 with the mAb lirentelimab (2C4, under clinical development) and with a sialoside mimetic with the potential to suppress mast cell degranulation. The three-dimensional structure of Siglec-8 and the fragment antigen binding (Fab) portion of the anti-Siglec-8 mAb 2C4, solved by X-ray crystallography, reveal that 2C4 binds close to the carbohydrate recognition domain (V-type Ig domain) on Siglec-8. We have also deduced the binding mode of a high-affinity analogue of its sialic acid ligand (9-N-napthylsufonimide-Neu5Ac, NSANeuAc) using a combination of NMR spectroscopy and X-ray crystallography. Our results show that the sialoside ring of NSANeuAc binds to the canonical sialyl binding pocket of the Siglec receptor family and that the high affinity arises from the accommodation of the NSA aromatic group in a nearby hydrophobic patch formed by the N-terminal tail and the unique G-G' loop. The results reveal the basis for the observed high affinity of this ligand and provide clues for the rational design of the next generation of Siglec-8 inhibitors. Additionally, the specific interactions between Siglec-8 and the N-linked glycans present on the high-affinity receptor FcεRIα have also been explored by NMR.
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Affiliation(s)
- Maria
Pia Lenza
- CIC
bioGUNE, Bizkaia Technology Park, Building 800, Derio-Bizkaia48160, Spain
| | - Unai Atxabal
- CIC
bioGUNE, Bizkaia Technology Park, Building 800, Derio-Bizkaia48160, Spain
| | - Corwin Nycholat
- Department
of Molecular Medicine and Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California92037, United States
| | - Iker Oyenarte
- CIC
bioGUNE, Bizkaia Technology Park, Building 800, Derio-Bizkaia48160, Spain
| | - Antonio Franconetti
- CIC
bioGUNE, Bizkaia Technology Park, Building 800, Derio-Bizkaia48160, Spain
| | - Jon Imanol Quintana
- CIC
bioGUNE, Bizkaia Technology Park, Building 800, Derio-Bizkaia48160, Spain
| | - Sandra Delgado
- CIC
bioGUNE, Bizkaia Technology Park, Building 800, Derio-Bizkaia48160, Spain
| | - Reyes Núñez-Franco
- CIC
bioGUNE, Bizkaia Technology Park, Building 800, Derio-Bizkaia48160, Spain
| | | | - Helena Coelho
- UCIBIO,
REQUIMTE, Departamento de Química, Faculdade de Ciências
e Tecnologia, Universidade de Nova de Lisboa, Caparica2829-516, Portugal
| | - Luca Unione
- CIC
bioGUNE, Bizkaia Technology Park, Building 800, Derio-Bizkaia48160, Spain
| | - Gonzalo Jiménez-Oses
- CIC
bioGUNE, Bizkaia Technology Park, Building 800, Derio-Bizkaia48160, Spain
- IKERBASQUE, Basque
Foundation for Science and Technology, Euskadi Plaza 5, Bilbao48009, Spain
| | - Filipa Marcelo
- UCIBIO,
REQUIMTE, Departamento de Química, Faculdade de Ciências
e Tecnologia, Universidade de Nova de Lisboa, Caparica2829-516, Portugal
| | - Mario Schubert
- Department
of Biosciences, University of Salzburg, Hellbrunnel Str. 34, Salzburg5020, Austria
| | - James C. Paulson
- Department
of Molecular Medicine and Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California92037, United States
| | - Jesús Jiménez-Barbero
- CIC
bioGUNE, Bizkaia Technology Park, Building 800, Derio-Bizkaia48160, Spain
- Department
of Organic Chemistry II, Faculty of Science and Technology, University of the Basque Country, Leioa48940, Spain
- IKERBASQUE, Basque
Foundation for Science and Technology, Euskadi Plaza 5, Bilbao48009, Spain
- Centro
de Investigacion Biomedica En Red de Enfermedades Respiratorias, Madrid28029, Spain
| | - June Ereño-Orbea
- CIC
bioGUNE, Bizkaia Technology Park, Building 800, Derio-Bizkaia48160, Spain
- IKERBASQUE, Basque
Foundation for Science and Technology, Euskadi Plaza 5, Bilbao48009, Spain
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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] [What about the content of this article? (0)] [Affiliation(s)] [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] [What about the content of this article? (0)] [Affiliation(s)] [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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Soares CO, Grosso AS, Ereño-Orbea J, Coelho H, Marcelo F. Molecular Recognition Insights of Sialic Acid Glycans by Distinct Receptors Unveiled by NMR and Molecular Modeling. Front Mol Biosci 2021; 8:727847. [PMID: 34869580 PMCID: PMC8634706 DOI: 10.3389/fmolb.2021.727847] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 10/01/2021] [Indexed: 11/13/2022] Open
Abstract
All cells are decorated with a highly dense and complex structure of glycan chains, which are mostly attached to proteins and lipids. In this context, sialic acids are a family of nine-carbon acidic monosaccharides typically found at the terminal position of glycan chains, modulating several physiological and pathological processes. Sialic acids have many structural and modulatory roles due to their negative charge and hydrophilicity. In addition, the recognition of sialic acid glycans by mammalian cell lectins, such as siglecs, has been described as an important immunological checkpoint. Furthermore, sialic acid glycans also play a pivotal role in host-pathogen interactions. Various pathogen receptors exposed on the surface of viruses and bacteria are responsible for the binding to sialic acid sugars located on the surface of host cells, becoming a critical point of contact in the infection process. Understanding the molecular mechanism of sialic acid glycans recognition by sialic acid-binding proteins, present on the surface of pathogens or human cells, is essential to realize the biological mechanism of these events and paves the way for the rational development of strategies to modulate sialic acid-protein interactions in diseases. In this perspective, nuclear magnetic resonance (NMR) spectroscopy, assisted with molecular modeling protocols, is a versatile and powerful technique to investigate the structural and dynamic aspects of glycoconjugates and their interactions in solution at the atomic level. NMR provides the corresponding ligand and protein epitopes, essential for designing and developing potential glycan-based therapies. In this review, we critically discuss the current state of knowledge about the structural features behind the molecular recognition of sialic acid glycans by different receptors, naturally present on human cells or pathogens, disclosed by NMR spectroscopy and molecular modeling protocols.
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Affiliation(s)
- Cátia Oliveira Soares
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.,Department of Chemistry, UCIBIO-Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | - Ana Sofia Grosso
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.,Department of Chemistry, UCIBIO-Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | - June Ereño-Orbea
- CIC bioGUNE, Basque Research and Technology Alliance, Bizkaia Technology Park, Bilbao, Spain.,Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Helena Coelho
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.,Department of Chemistry, UCIBIO-Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | - Filipa Marcelo
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.,Department of Chemistry, UCIBIO-Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
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8
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Macías-León J, Bermejo IA, Asín A, García-García A, Compañón I, Jiménez-Moreno E, Coelho H, Mangini V, Albuquerque IS, Marcelo F, Asensio JL, Bernardes GJL, Joshi HJ, Fiammengo R, Blixt O, Hurtado-Guerrero R, Corzana F. Structural characterization of an unprecedented lectin-like antitumoral anti-MUC1 antibody. Chem Commun (Camb) 2021; 56:15137-15140. [PMID: 33211039 DOI: 10.1039/d0cc06349e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The molecular basis of antibody 5E5, which recognizes the entire GalNAc unit as a primary epitope is disclosed. The antibody's contacts with the peptide are mostly limited to two residues, allowing it to show some degree of promiscuity. These findings open the door to the chemical design of peptide-mimetics for developing efficient anti-cancer vaccines and diagnostic tools.
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Affiliation(s)
- Javier Macías-León
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, Mariano Esquillor s/n, Campus Rio Ebro, Edificio I+D, Zaragoza, Spain.
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9
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Lima CDL, Coelho H, Gimeno A, Trovão F, Diniz A, Dias JS, Jiménez-Barbero J, Corzana F, Carvalho AL, Cabrita EJ, Marcelo F. Structural Insights into the Molecular Recognition Mechanism of the Cancer and Pathogenic Epitope, LacdiNAc by Immune-Related Lectins. Chemistry 2021; 27:7951-7958. [PMID: 33826192 DOI: 10.1002/chem.202100800] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Indexed: 12/22/2022]
Abstract
Interactions of glycan-specific epitopes to human lectin receptors represent novel immune checkpoints for investigating cancer and infection diseases. By employing a multidisciplinary approach that combines isothermal titration calorimetry, NMR spectroscopy, molecular dynamics simulations, and X-ray crystallography, we investigated the molecular determinants that govern the recognition of the tumour and pathogenic glycobiomarker LacdiNAc (GalNAcβ1-4GlcNAc, LDN), including their comparison with the ubiquitous LacNAc epitope (Galβ1-4GlcNAc, LN), by two human immune-related lectins, galectin-3 (hGal-3) and the macrophage galactose C-type lectin (hMGL). A different mechanism of binding and interactions was observed for the hGal-3/LDN and hMGL/LDN complexes, which explains the remarkable difference in the binding specificity of LDN and LN by these two lectins. The new structural clues reported herein are fundamental for the chemical design of mimetics targeting hGal-3/hMGL recognition process.
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Affiliation(s)
- Carlos D L Lima
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
| | - Helena Coelho
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
| | - Ana Gimeno
- CIC bioGUNE, Bizkaia, Technology Park, Building 801A, 48170, Derio, Spain
| | - Filipa Trovão
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
| | - Ana Diniz
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
| | - Jorge S Dias
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
| | - Jesús Jiménez-Barbero
- CIC bioGUNE, Bizkaia, Technology Park, Building 801A, 48170, Derio, Spain.,Ikerbasque, Basque Foundation for Science, 48013, Bilbao, Spain
| | - Francisco Corzana
- Departamento de Quimica, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006, Logroño, Spain
| | - Ana Luísa Carvalho
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
| | - Eurico J Cabrita
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
| | - Filipa Marcelo
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
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10
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Gabba A, Bogucka A, Luz JG, Diniz A, Coelho H, Corzana F, Cañada FJ, Marcelo F, Murphy PV, Birrane G. Crystal Structure of the Carbohydrate Recognition Domain of the Human Macrophage Galactose C-Type Lectin Bound to GalNAc and the Tumor-Associated Tn Antigen. Biochemistry 2021; 60:1327-1336. [PMID: 33724805 DOI: 10.1021/acs.biochem.1c00009] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The human macrophage galactose lectin (MGL) is an endocytic type II transmembrane receptor expressed on immature monocyte-derived dendritic cells and activated macrophages and plays a role in modulating the immune system in response to infections and cancer. MGL contains an extracellular calcium-dependent (C-type) carbohydrate recognition domain (CRD) that specifically binds terminal N-acetylgalactosamine glycan residues such as the Tn and sialyl-Tn antigens found on tumor cells, as well as other N- and O-glycans displayed on certain viruses and parasites. Even though the glycan specificity of MGL is known and several binding glycoproteins have been identified, the molecular basis for substrate recognition has remained elusive due to the lack of high-resolution structures. Here we present crystal structures of the MGL CRD at near endosomal pH and in several complexes, which reveal details of the interactions with the natural ligand, GalNAc, the cancer-associated Tn-Ser antigen, and a synthetic GalNAc mimetic ligand. Like the asialoglycoprotein receptor, additional calcium atoms are present and contribute to stabilization of the MGL CRD fold. The structure provides the molecular basis for preferential binding of N-acetylgalactosamine over galactose and prompted the re-evaluation of the binding modes previously proposed in solution. Saturation transfer difference nuclear magnetic resonance data acquired using the MGL CRD and interpreted using the crystal structure indicate a single binding mode for GalNAc in solution. Models of MGL1 and MGL2, the mouse homologues of MGL, explain how these proteins might recognize LewisX and GalNAc, respectively.
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Affiliation(s)
- Adele Gabba
- Division of Experimental Medicine, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, United States.,School of Chemistry, National University of Ireland Galway, Galway H91 TK33, Ireland
| | - Agnieszka Bogucka
- Division of Experimental Medicine, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, United States.,School of Chemistry, National University of Ireland Galway, Galway H91 TK33, Ireland
| | - John G Luz
- Division of Experimental Medicine, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, United States
| | - Ana Diniz
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade de Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Helena Coelho
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade de Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Francisco Corzana
- Departamento de Química, Centro de Investigación en Síntesis Química Universidad de La Rioja, 26006 Logroño, Spain
| | - Francisco Javier Cañada
- Centro de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain.,CIBER de Enfermedades Respiratorias (CIBERES), Avda Monforte de Lemos 3-5, 28029 Madrid, Spain
| | - Filipa Marcelo
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade de Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Paul V Murphy
- School of Chemistry, National University of Ireland Galway, Galway H91 TK33, Ireland
| | - Gabriel Birrane
- Division of Experimental Medicine, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, United States
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11
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Heit JJ, Coelho H, Lima FO, Granja M, Aghaebrahim A, Hanel R, Kwok K, Haerian H, Cereda CW, Venkatasubramanian C, Dehkharghani S, Carbonera LA, Wiener J, Copeland K, Mont'Alverne F. Automated Cerebral Hemorrhage Detection Using RAPID. AJNR Am J Neuroradiol 2020; 42:273-278. [PMID: 33361378 DOI: 10.3174/ajnr.a6926] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 09/13/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND AND PURPOSE Intracranial hemorrhage (ICH) is an important event that is diagnosed on head NCCT. Increased NCCT utilization in busy hospitals may limit timely identification of ICH. RAPID ICH is an automated hybrid 2D-3D convolutional neural network application designed to detect ICH that may allow for expedited ICH diagnosis. We determined the accuracy of RAPID ICH for ICH detection and ICH volumetric quantification on NCCT. MATERIALS AND METHODS NCCT scans were evaluated for ICH by RAPID ICH. Consensus detection of ICH by 3 neuroradiology experts was used as the criterion standard for RAPID ICH comparison. ICH volume was also automatically determined by RAPID ICH in patients with intraparenchymal or intraventricular hemorrhage and compared with manually segmented ICH volumes by a single neuroradiology expert. ICH detection accuracy, sensitivity, specificity, positive predictive value, negative predictive value, and positive and negative likelihood ratios by RAPID ICH were determined. RESULTS We included 308 studies. RAPID ICH correctly identified 151/158 ICH cases and 143/150 ICH-negative cases, which resulted in high sensitivity (0.956, CI: 0.911-0.978), specificity (0.953, CI: 0.907-0.977), positive predictive value (0.956, CI: 0.911-0.978), and negative predictive value (0.953, CI: 0.907-0.977) for ICH detection. The positive likelihood ratio (20.479, CI 9.928-42.245) and negative likelihood ratio (0.046, CI 0.023-0.096) for ICH detection were similarly favorable. RAPID ICH volumetric quantification for intraparenchymal and intraventricular hemorrhages strongly correlated with expert manual segmentation (correlation coefficient r = 0.983); the median absolute error was 3 mL. CONCLUSIONS RAPID ICH is highly accurate in the detection of ICH and in the volumetric quantification of intraparenchymal and intraventricular hemorrhages.
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Affiliation(s)
- J J Heit
- From the Department of Radiology, Neuroimaging, and Neurointervention Division (J.J.H.), Stanford University School of Medicine, Stanford, California
| | - H Coelho
- Interventional Radiology Service (H.C., F.M.)
| | - F O Lima
- Department of Neurology (F.O.L.), Hospital Geral de Fortaleza, R. Ávila Goulart, Fortaleza, Brazil
| | - M Granja
- Baptist Neurological Institute (M.G., A.A., R.H.), Lyerly Neurosurgery/Baptist Health, Jacksonville, Florida.,Diagnostic Imaging Department (M.G., A.A., R.H.), Fundación Santa Fe de Bogota University Hospital, Bogotá, Colombia
| | - A Aghaebrahim
- Baptist Neurological Institute (M.G., A.A., R.H.), Lyerly Neurosurgery/Baptist Health, Jacksonville, Florida.,Diagnostic Imaging Department (M.G., A.A., R.H.), Fundación Santa Fe de Bogota University Hospital, Bogotá, Colombia
| | - R Hanel
- Baptist Neurological Institute (M.G., A.A., R.H.), Lyerly Neurosurgery/Baptist Health, Jacksonville, Florida.,Diagnostic Imaging Department (M.G., A.A., R.H.), Fundación Santa Fe de Bogota University Hospital, Bogotá, Colombia
| | - K Kwok
- Department of Radiology (K.K.), Central Valley Imaging Medical Associates, Manteca, California
| | - H Haerian
- Department of Radiology (H.H.), LifeBridge Health, Baltimore, Maryland
| | - C W Cereda
- Department of Neurology (C.W.C.), EOC Ospedale Regionale di Lugano, Lugano, Switzerland
| | - C Venkatasubramanian
- Neurocritical Care and Stroke, Department of Neurology (C.V.), Stanford University, Palo Alto, California
| | - S Dehkharghani
- Department of Radiology (S.D.), NY University Langone Health, New York, New York
| | - L A Carbonera
- Hospital das Clínicas de Porto Alegre (L.A.C.), Bairro Santa Cecilia, Brazil
| | - J Wiener
- Department of Radiology (J.W.), Boca Raton Regional Hospital, Boca Raton, Florida
| | - K Copeland
- Boulder Statistics (K.C.), Steamboat Springs, Colorado
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12
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Lenza MP, Oyenarte I, Diercks T, Quintana JI, Gimeno A, Coelho H, Diniz A, Peccati F, Delgado S, Bosch A, Valle M, Millet O, Abrescia NGA, Palazón A, Marcelo F, Jiménez‐Osés G, Jiménez‐Barbero J, Ardá A, Ereño‐Orbea J. Structural Characterization of N-Linked Glycans in the Receptor Binding Domain of the SARS-CoV-2 Spike Protein and their Interactions with Human Lectins. Angew Chem Int Ed Engl 2020; 59:23763-23771. [PMID: 32915505 PMCID: PMC7894318 DOI: 10.1002/anie.202011015] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/08/2020] [Indexed: 01/17/2023]
Abstract
The glycan structures of the receptor binding domain of the SARS-CoV2 spike glycoprotein expressed in human HEK293F cells have been studied by using NMR. The different possible interacting epitopes have been deeply analysed and characterized, providing evidence of the presence of glycan structures not found in previous MS-based analyses. The interaction of the RBD 13 C-labelled glycans with different human lectins, which are expressed in different organs and tissues that may be affected during the infection process, has also been evaluated by NMR. In particular, 15 N-labelled galectins (galectins-3, -7 and -8 N-terminal), Siglecs (Siglec-8, Siglec-10), and C-type lectins (DC-SIGN, MGL) have been employed. Complementary experiments from the glycoprotein perspective or from the lectin's point of view have permitted to disentangle the specific interacting epitopes in each case. Based on these findings, 3D models of the interacting complexes have been proposed.
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Affiliation(s)
- Maria Pia Lenza
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
| | - Iker Oyenarte
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
| | - Tammo Diercks
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
| | - Jon Imanol Quintana
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
| | - Ana Gimeno
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
| | - Helena Coelho
- UCIBIOREQUIMTEDepartamento de QuímicaFaculdade de Ciências e TecnologiaUniversidade NOVA de Lisboa2829-516CaparicaPortugal
| | - Ana Diniz
- UCIBIOREQUIMTEDepartamento de QuímicaFaculdade de Ciências e TecnologiaUniversidade NOVA de Lisboa2829-516CaparicaPortugal
| | - Francesca Peccati
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
| | - Sandra Delgado
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
| | - Alexandre Bosch
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
| | - Mikel Valle
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
| | - Oscar Millet
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
| | - Nicola G. A. Abrescia
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
- Ikerbasque, Basque Foundation for Science48013BilbaoSpain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd)Instituto de Salud Carlos IIIMadridSpain
| | - Asís Palazón
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
- Ikerbasque, Basque Foundation for Science48013BilbaoSpain
| | - Filipa Marcelo
- UCIBIOREQUIMTEDepartamento de QuímicaFaculdade de Ciências e TecnologiaUniversidade NOVA de Lisboa2829-516CaparicaPortugal
| | - Gonzalo Jiménez‐Osés
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
| | - Jesús Jiménez‐Barbero
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
- Ikerbasque, Basque Foundation for Science48013BilbaoSpain
- Department of Organic Chemistry IIUniversity of the Basque CountryUPV/EHU48940LeioaSpain
| | - Ana Ardá
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
| | - June Ereño‐Orbea
- CIC bioGUNEBasque Research and Technology AllianceBRTABizkaia Technology Park48162DerioSpain
- Ikerbasque, Basque Foundation for Science48013BilbaoSpain
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13
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Lenza MP, Oyenarte I, Diercks T, Quintana JI, Gimeno A, Coelho H, Diniz A, Peccati F, Delgado S, Bosch A, Valle M, Millet O, Abrescia NGA, Palazón A, Marcelo F, Jiménez‐Osés G, Jiménez‐Barbero J, Ardá A, Ereño‐Orbea J. Structural Characterization of N‐Linked Glycans in the Receptor Binding Domain of the SARS‐CoV‐2 Spike Protein and their Interactions with Human Lectins. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011015] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Maria Pia Lenza
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
| | - Iker Oyenarte
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
| | - Tammo Diercks
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
| | - Jon Imanol Quintana
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
| | - Ana Gimeno
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
| | - Helena Coelho
- UCIBIO REQUIMTE Departamento de Química Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa 2829-516 Caparica Portugal
| | - Ana Diniz
- UCIBIO REQUIMTE Departamento de Química Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa 2829-516 Caparica Portugal
| | - Francesca Peccati
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
| | - Sandra Delgado
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
| | - Alexandre Bosch
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
| | - Mikel Valle
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
| | - Oscar Millet
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
| | - Nicola G. A. Abrescia
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
- Ikerbasque, Basque Foundation for Science 48013 Bilbao Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd) Instituto de Salud Carlos III Madrid Spain
| | - Asís Palazón
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
- Ikerbasque, Basque Foundation for Science 48013 Bilbao Spain
| | - Filipa Marcelo
- UCIBIO REQUIMTE Departamento de Química Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa 2829-516 Caparica Portugal
| | - Gonzalo Jiménez‐Osés
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
| | - Jesús Jiménez‐Barbero
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
- Ikerbasque, Basque Foundation for Science 48013 Bilbao Spain
- Department of Organic Chemistry II University of the Basque Country UPV/EHU 48940 Leioa Spain
| | - Ana Ardá
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
| | - June Ereño‐Orbea
- CIC bioGUNE Basque Research and Technology Alliance BRTA Bizkaia Technology Park 48162 Derio Spain
- Ikerbasque, Basque Foundation for Science 48013 Bilbao Spain
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14
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de Las Rivas M, Paul Daniel EJ, Narimatsu Y, Compañón I, Kato K, Hermosilla P, Thureau A, Ceballos-Laita L, Coelho H, Bernadó P, Marcelo F, Hansen L, Maeda R, Lostao A, Corzana F, Clausen H, Gerken TA, Hurtado-Guerrero R. Molecular basis for fibroblast growth factor 23 O-glycosylation by GalNAc-T3. Nat Chem Biol 2020; 16:351-360. [PMID: 31932717 PMCID: PMC7923394 DOI: 10.1038/s41589-019-0444-x] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 11/14/2019] [Accepted: 11/25/2019] [Indexed: 11/09/2022]
Abstract
Polypeptide GalNAc-transferase T3 (GalNAc-T3) regulates fibroblast growth factor 23 (FGF23) by O-glycosylating Thr178 in a furin proprotein processing motif RHT178R↓S. FGF23 regulates phosphate homeostasis and deficiency in GALNT3 or FGF23 results in hyperphosphatemia and familial tumoral calcinosis. We explored the molecular mechanism for GalNAc-T3 glycosylation of FGF23 using engineered cell models and biophysical studies including kinetics, molecular dynamics and X-ray crystallography of GalNAc-T3 complexed to glycopeptide substrates. GalNAc-T3 uses a lectin domain mediated mechanism to glycosylate Thr178 requiring previous glycosylation at Thr171. Notably, Thr178 is a poor substrate site with limiting glycosylation due to substrate clashes leading to destabilization of the catalytic domain flexible loop. We suggest GalNAc-T3 specificity for FGF23 and its ability to control circulating levels of intact FGF23 is achieved by FGF23 being a poor substrate. GalNAc-T3's structure further reveals the molecular bases for reported disease-causing mutations. Our findings provide an insight into how GalNAc-T isoenzymes achieve isoenzyme-specific nonredundant functions.
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Affiliation(s)
- Matilde de Las Rivas
- BIFI, University of Zaragoza, Mariano Esquillor s/n, Campus Rio Ebro, Edificio I+D, Zaragoza, Spain
| | | | - Yoshiki Narimatsu
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, Copenhagen, Denmark
| | - Ismael Compañón
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, Logroño, Spain
| | - Kentaro Kato
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, Copenhagen, Denmark
- Department of Eco-epidemiology, Institute of Tropical Medicine Nagasaki University, Nagasaki, Japan
| | - Pablo Hermosilla
- Laboratorio de Microscopías Avanzadas, Instituto de Nanociencia de Aragón, Universidad de Zaragoza, Zaragoza, Spain
| | | | - Laura Ceballos-Laita
- BIFI, University of Zaragoza, Mariano Esquillor s/n, Campus Rio Ebro, Edificio I+D, Zaragoza, Spain
| | - Helena Coelho
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade de Nova de Lisboa, Caparica, Portugal
- CIC bioGUNE, Bizkaia Technology Park, Derio, Spain
| | - Pau Bernadó
- Centre de Biochimie Structurale. INSERM, CNRS, Université de Montpellier, Montpellier, France
| | - Filipa Marcelo
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade de Nova de Lisboa, Caparica, Portugal
| | - Lars Hansen
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, Copenhagen, Denmark
| | - Ryota Maeda
- Department of Hematology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Anabel Lostao
- Laboratorio de Microscopías Avanzadas, Instituto de Nanociencia de Aragón, Universidad de Zaragoza, Zaragoza, Spain
- Fundación ARAID, Zaragoza, Spain
- Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, Zaragoza, Spain
| | - Francisco Corzana
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, Logroño, Spain
| | - Henrik Clausen
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, Copenhagen, Denmark
| | - Thomas A Gerken
- Department of Biochemistry, Case Western Reserve University, Cleveland, OH, USA
| | - Ramon Hurtado-Guerrero
- BIFI, University of Zaragoza, Mariano Esquillor s/n, Campus Rio Ebro, Edificio I+D, Zaragoza, Spain.
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, Copenhagen, Denmark.
- Fundación ARAID, Zaragoza, Spain.
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15
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Diniz A, Coelho H, Dias JS, Vliet SJ, Jiménez‐Barbero J, Corzana F, Cabrita EJ, Marcelo F. The Plasticity of the Carbohydrate Recognition Domain Dictates the Exquisite Mechanism of Binding of Human Macrophage Galactose‐Type Lectin. Chemistry 2019; 25:13945-13955. [DOI: 10.1002/chem.201902780] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 08/01/2019] [Indexed: 01/07/2023]
Affiliation(s)
- Ana Diniz
- UCIBIO, REQUIMTEDepartamento de QuímicaFaculdade de Ciências e TecnologiaUniversidade NOVA de Lisboa 2829-516 Caparica Portugal
| | - Helena Coelho
- UCIBIO, REQUIMTEDepartamento de QuímicaFaculdade de Ciências e TecnologiaUniversidade NOVA de Lisboa 2829-516 Caparica Portugal
- CIC bioGUNEBizkaia Technology Park, Building 801A 48170 Derio Spain
- Departament of Organic Chemistry IIFaculty of Science & TechnologyUniversity of the Basque Country, Leioa 48940 Bizkaia Spain
| | - Jorge S. Dias
- UCIBIO, REQUIMTEDepartamento de QuímicaFaculdade de Ciências e TecnologiaUniversidade NOVA de Lisboa 2829-516 Caparica Portugal
| | - Sandra J. Vliet
- Department of Molecular Cell Biology and ImmunologyAmsterdam Infection and Immunity InstituteAmsterdam UMCVrije Universiteit Amsterdam 1007MB Amsterdam the Netherlands
| | - Jesús Jiménez‐Barbero
- CIC bioGUNEBizkaia Technology Park, Building 801A 48170 Derio Spain
- Departament of Organic Chemistry IIFaculty of Science & TechnologyUniversity of the Basque Country, Leioa 48940 Bizkaia Spain
- IkerbasqueBasque Foundation for Science Maria Diaz de Haro 13 48009 Bilbao Spain
| | - Francisco Corzana
- Departamento de QuímicaCentro de Investigación en Síntesis QuímicaUniversidad de La Rioja 26006 Logroño Spain
| | - Eurico J. Cabrita
- UCIBIO, REQUIMTEDepartamento de QuímicaFaculdade de Ciências e TecnologiaUniversidade NOVA de Lisboa 2829-516 Caparica Portugal
| | - Filipa Marcelo
- UCIBIO, REQUIMTEDepartamento de QuímicaFaculdade de Ciências e TecnologiaUniversidade NOVA de Lisboa 2829-516 Caparica Portugal
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16
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Cochet F, Facchini FA, Zaffaroni L, Billod JM, Coelho H, Holgado A, Braun H, Beyaert R, Jerala R, Jimenez-Barbero J, Martin-Santamaria S, Peri F. Novel carboxylate-based glycolipids: TLR4 antagonism, MD-2 binding and self-assembly properties. Sci Rep 2019; 9:919. [PMID: 30696900 PMCID: PMC6351529 DOI: 10.1038/s41598-018-37421-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 11/14/2018] [Indexed: 12/31/2022] Open
Abstract
New monosaccharide-based lipid A analogues were rationally designed through MD-2 docking studies. A panel of compounds with two carboxylate groups as phosphates bioisosteres, was synthesized with the same glucosamine-bis-succinyl core linked to different unsaturated and saturated fatty acid chains. The binding of the synthetic compounds to purified, functional recombinant human MD-2 was studied by four independent methods. All compounds bound to MD-2 with similar affinities and inhibited in a concentration-dependent manner the LPS-stimulated TLR4 signaling in human and murine cells, while being inactive as TLR4 agonists when provided alone. A compound of the panel was tested in vivo and was not able to inhibit the production of proinflammatory cytokines in animals. This lack of activity is probably due to strong binding to serum albumin, as suggested by cell experiments in the presence of the serum. The interesting self-assembly property in solution of this type of compounds was investigated by computational methods and microscopy, and formation of large vesicles was observed by cryo-TEM microscopy.
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Affiliation(s)
- Florent Cochet
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, 20126, Milano, Italy
| | - Fabio A Facchini
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, 20126, Milano, Italy
| | - Lenny Zaffaroni
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, 20126, Milano, Italy
| | - Jean-Marc Billod
- Department of Structural and Chemical Biology, Centro de Investigaciones Biologicas, CIB-CSIC, Ramiro de Maeztu, 9, 28040, Madrid, Spain
| | - Helena Coelho
- Molecular Recognition & Host-Pathogen Interactions Programme, CIC bioGUNE, Bizkaia Technology Park, Building 801 A, 48170, Derio, Spain.,UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal.,Department of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, 48940, Leioa, Bizkaia, Spain
| | - Aurora Holgado
- Unit for Molecular Signal Transduction in Inflammation VIB-UGent Center for Inflammation Research, VIB Technologiepark 927, 9052, Zwijnaarde, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University Technologiepark 927, 9052, Zwijnaarde, Ghent, Belgium
| | - Harald Braun
- Unit for Molecular Signal Transduction in Inflammation VIB-UGent Center for Inflammation Research, VIB Technologiepark 927, 9052, Zwijnaarde, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University Technologiepark 927, 9052, Zwijnaarde, Ghent, Belgium
| | - Rudi Beyaert
- Unit for Molecular Signal Transduction in Inflammation VIB-UGent Center for Inflammation Research, VIB Technologiepark 927, 9052, Zwijnaarde, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University Technologiepark 927, 9052, Zwijnaarde, Ghent, Belgium
| | - Roman Jerala
- Department of Biotechnology, National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia
| | - Jesus Jimenez-Barbero
- Molecular Recognition & Host-Pathogen Interactions Programme, CIC bioGUNE, Bizkaia Technology Park, Building 801 A, 48170, Derio, Spain.,Department of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, 48940, Leioa, Bizkaia, Spain.,Ikerbasque, Basque Foundation for Science, Maria Diaz de Haro 13, 48009, Bilbao, Spain
| | - Sonsoles Martin-Santamaria
- Department of Structural and Chemical Biology, Centro de Investigaciones Biologicas, CIB-CSIC, Ramiro de Maeztu, 9, 28040, Madrid, Spain
| | - Francesco Peri
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, 20126, Milano, Italy.
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17
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de las Rivas M, Paul Daniel EJ, Coelho H, Lira-Navarrete E, Raich L, Compañón I, Diniz A, Lagartera L, Jiménez-Barbero J, Clausen H, Rovira C, Marcelo F, Corzana F, Gerken TA, Hurtado-Guerrero R. Structural and Mechanistic Insights into the Catalytic-Domain-Mediated Short-Range Glycosylation Preferences of GalNAc-T4. ACS Cent Sci 2018; 4:1274-1290. [PMID: 30276263 PMCID: PMC6161044 DOI: 10.1021/acscentsci.8b00488] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Indexed: 05/03/2023]
Abstract
Mucin-type O-glycosylation is initiated by a family of polypeptide GalNAc-transferases (GalNAc-Ts) which are type-II transmembrane proteins that contain Golgi luminal catalytic and lectin domains that are connected by a flexible linker. Several GalNAc-Ts, including GalNAc-T4, show both long-range and short-range prior glycosylation specificity, governed by their lectin and catalytic domains, respectively. While the mechanism of the lectin-domain-dependent glycosylation is well-known, the molecular basis for the catalytic-domain-dependent glycosylation of glycopeptides is unclear. Herein, we report the crystal structure of GalNAc-T4 bound to the diglycopeptide GAT*GAGAGAGT*TPGPG (containing two α-GalNAc glycosylated Thr (T*), the PXP motif and a "naked" Thr acceptor site) that describes its catalytic domain glycopeptide GalNAc binding site. Kinetic studies of wild-type and GalNAc binding site mutant enzymes show the lectin domain GalNAc binding activity dominates over the catalytic domain GalNAc binding activity and that these activities can be independently eliminated. Surprisingly, a flexible loop protruding from the lectin domain was found essential for the optimal activity of the catalytic domain. This work provides the first structural basis for the short-range glycosylation preferences of a GalNAc-T.
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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 50018, Spain
| | - Earnest James Paul Daniel
- Departments
of Biochemistry, Pediatrics and Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Helena Coelho
- UCIBIO,
REQUIMTE, Departamento de Química, Faculdade de Ciências
e Tecnologia, Universidade de Nova de Lisboa, Caparica 2825-149, Portugal
- CIC
bioGUNE, Bizkaia Technology
Park, Building 801A, 48170 Derio, Spain
- Departament
of Organic Chemistry II, Faculty of Science
& Technology, University of the Basque
Country, Leioa, 48940 Bizkaia, Spain
| | - Erandi Lira-Navarrete
- Copenhagen
Center for Glycomics, Department of Cellular and Molecular Medicine,
School of Dentistry, University of Copenhagen, Copenhagen 1165, Denmark
| | - Lluis Raich
- Departament
de Química Inorgànica i Orgànica (secció
de Química Orgànica) & Institut de Química
Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Ismael Compañón
- Departamento
de Química, Universidad de La Rioja,
Centro de Investigación en Síntesis Química, E-26006 Logroño, Spain
| | - Ana Diniz
- UCIBIO,
REQUIMTE, Departamento de Química, Faculdade de Ciências
e Tecnologia, Universidade de Nova de Lisboa, Caparica 2825-149, Portugal
| | | | - Jesús Jiménez-Barbero
- CIC
bioGUNE, Bizkaia Technology
Park, Building 801A, 48170 Derio, Spain
- Departament
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
| | - Henrik Clausen
- Copenhagen
Center for Glycomics, Department of Cellular and Molecular Medicine,
School of Dentistry, University of Copenhagen, Copenhagen 1165, Denmark
| | - Carme Rovira
- Departament
de Química Inorgànica i Orgànica (secció
de Química Orgànica) & Institut de Química
Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
- Institució
Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys, 23, 08010 Barcelona, Spain
| | - Filipa Marcelo
- UCIBIO,
REQUIMTE, Departamento de Química, Faculdade de Ciências
e Tecnologia, Universidade de Nova de Lisboa, Caparica 2825-149, Portugal
| | - Francisco Corzana
- Departamento
de Química, Universidad de La Rioja,
Centro de Investigación en Síntesis Química, E-26006 Logroño, Spain
| | - Thomas A. Gerken
- Departments
of Biochemistry, Pediatrics and Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, United States
- E-mail:
| | - Ramon Hurtado-Guerrero
- BIFI, University of Zaragoza, BIFI-IQFR (CSIC) Joint Unit,
Mariano Esquillor s/n, Campus Rio Ebro, Edificio I+D, Zaragoza 50018, Spain
- Fundación ARAID, 50018 Zaragoza, Spain
- E-mail:
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18
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de Las Rivas M, Coelho H, Diniz A, Lira-Navarrete E, Compañón I, Jiménez-Barbero J, Schjoldager KT, Bennett EP, Vakhrushev SY, Clausen H, Corzana F, Marcelo F, Hurtado-Guerrero R. Structural Analysis of a GalNAc-T2 Mutant Reveals an Induced-Fit Catalytic Mechanism for GalNAc-Ts. Chemistry 2018; 24:8382-8392. [PMID: 29601100 DOI: 10.1002/chem.201800701] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Indexed: 02/02/2023]
Abstract
The family of polypeptide N-acetylgalactosamine (GalNAc) transferases (GalNAc-Ts) orchestrates the initiating step of mucin-type protein O-glycosylation by transfer of GalNAc moieties to serine and threonine residues in proteins. Deficiencies and dysregulation of GalNAc-T isoenzymes are related to different diseases. Recently, it has been demonstrated that an inactive GalNAc-T2 mutant (F104S), which is not located at the active site, induces low levels of high-density lipoprotein cholesterol (HDL-C) in humans. Herein, the molecular basis for F104S mutant inactivation has been deciphered. Saturation transfer difference NMR spectroscopy experiments demonstrate that the mutation induces loss of binding to peptide substrates. Analysis of the crystal structure of the F104S mutant bound to UDP-GalNAc (UDP=uridine diphosphate), combined with molecular dynamics (MD) simulations, has revealed that the flexible loop is disordered and displays larger conformational changes in the mutant enzyme than that in the wild-type (WT) enzyme. 19 F NMR spectroscopy experiments reveal that the WT enzyme only reaches the active state in the presence of UDP-GalNAc, which provides compelling evidence that GalNAc-T2 adopts a UDP-GalNAc-dependent induced-fit mechanism. The F104S mutation precludes the enzyme from achieving the active conformation and concomitantly binding peptide substrates. This study provides new insights into the catalytic mechanism of the large family of GalNAc-Ts and how these enzymes orchestrate protein O-glycosylation.
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Affiliation(s)
- Matilde de Las Rivas
- Instituto de Biocomputación y Fisica de Sistemas Complejos (BIFI), BIFI-IQFR (CSIC) Joint Unit, Universidad de Zaragoza, 50018, Zaragoza, Spain
| | - Helena Coelho
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal
- CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170, Derio, Spain
- Department of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, 48940, Leioa, Bizkaia, Spain
| | - Ana Diniz
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal
| | - Erandi Lira-Navarrete
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, Copenhagen, Denmark
| | - Ismael Compañón
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, E-26006, Logroño, Spain
| | - Jesús Jiménez-Barbero
- CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170, Derio, Spain
- Department of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, 48940, Leioa, Bizkaia, Spain
- Ikerbasque, Basque Foundation for Science, Maria Diaz de Haro 13, 48009, Bilbao, Spain
| | - Katrine T Schjoldager
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, Copenhagen, Denmark
| | - Eric P Bennett
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, Copenhagen, Denmark
| | - Sergey Y Vakhrushev
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, Copenhagen, Denmark
| | - Henrik Clausen
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, Copenhagen, Denmark
| | - Francisco Corzana
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, E-26006, Logroño, Spain
| | - Filipa Marcelo
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal
| | - Ramon Hurtado-Guerrero
- Instituto de Biocomputación y Fisica de Sistemas Complejos (BIFI), BIFI-IQFR (CSIC) Joint Unit, Universidad de Zaragoza, 50018, Zaragoza, Spain
- Fundación ARAID, 50018, Zaragoza, Spain
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19
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Facchini FA, Coelho H, Sestito SE, Delgado S, Minotti A, Andreu D, Jiménez-Barbero J, Peri F. Co-administration of Antimicrobial Peptides Enhances Toll-like Receptor 4 Antagonist Activity of a Synthetic Glycolipid. ChemMedChem 2018; 13:280-287. [PMID: 29265636 PMCID: PMC5900894 DOI: 10.1002/cmdc.201700694] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 12/02/2017] [Indexed: 12/21/2022]
Abstract
This study examines the effect of co‐administration of antimicrobial peptides and the synthetic glycolipid FP7, which is active in inhibiting inflammatory cytokine production caused by TLR4 activation and signaling. The co‐administration of two lipopolysaccharide (LPS)‐neutralizing peptides (a cecropin A–melittin hybrid peptide and a human cathelicidin) enhances by an order of magnitude the potency of FP7 in blocking the TLR4 signal. Interestingly, this is not an additional effect of LPS neutralization by peptides, because it also occurs if cells are stimulated by the plant lectin phytohemagglutinin, a non‐LPS TLR4 agonist. Our data suggest a dual mechanism of action for the peptides, not exclusively based on LPS binding and neutralization, but also on a direct effect on the LPS‐binding proteins of the TLR4 receptor complex. NMR experiments in solution show that peptide addition changes the aggregation state of FP7, promoting the formation of larger micelles. These results suggest a relationship between the aggregation state of lipid A‐like ligands and the type and intensity of the TLR4 response.
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Affiliation(s)
- Fabio A Facchini
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, 20126, Milano, Italy
| | - Helena Coelho
- Molecular Recognition & Host-Pathogen Interactions Programme, CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170, Derio, Spain.,Department of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, 48940, Leioa, Bizkaia, Spain.,UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal
| | - Stefania E Sestito
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, 20126, Milano, Italy
| | - Sandra Delgado
- Molecular Recognition & Host-Pathogen Interactions Programme, CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170, Derio, Spain
| | - Alberto Minotti
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, 20126, Milano, Italy
| | - David Andreu
- Department of Experimental and Health Sciences, Pompeu Fabra University, Barcelona Biomedical Research Park, Dr. Aiguader 88, 08003, Barcelona, Spain
| | - Jesús Jiménez-Barbero
- Molecular Recognition & Host-Pathogen Interactions Programme, CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170, Derio, Spain.,Department of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, 48940, Leioa, Bizkaia, Spain.,Ikerbasque, Basque Foundation for Science, Maria Diaz de Haro 13, 48009, Bilbao, Spain
| | - Francesco Peri
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, 20126, Milano, Italy
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20
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Unione L, Gimeno A, Valverde P, Calloni I, Coelho H, Mirabella S, Poveda A, Arda A, Jimenez-Barbero J. Glycans in Infectious Diseases. A Molecular Recognition Perspective. Curr Med Chem 2017; 24:4057-4080. [PMID: 28215157 DOI: 10.2174/0929867324666170217093702] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 01/16/2017] [Accepted: 01/16/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND From the simplest bacteria to the highest complex mammals, including humans, every single cell is covered by a dense coat of glycans. Glycans are involved in almost every biological process that takes place in our body, playing a central role in the communication between cells and their environment. Glycans are also involved in infectious diseases, which arise from the specific interaction between glycans of the pathogen cell coat and specific receptors on the host cell or vice versa. OBJECTIVE The understanding of the mechanisms governing these specific carbohydrateprotein interactions, at atomic and molecular levels, is crucial to develop new drugs able to block the infection and to avoid the disease. METHODS Recent advances in biophysical techniques allow for a complete picture of the hostpathogen infection event, unveiling the key aspects of the molecular interaction and, thus, providing an opportunity to interfere with it. CONCLUSION In this general review, we discuss some recent contributions, providing a summary of what we consider the most innovative and inspiring research lines to the field.
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Affiliation(s)
- Luca Unione
- CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170 Derio, Spain
| | - Ana Gimeno
- CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170 Derio, Spain
| | - Pablo Valverde
- CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170 Derio, Spain
| | - Ilaria Calloni
- CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170 Derio, Spain.,Departament of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, 48940 Leioa, Bizkaia, Spain
| | - Helena Coelho
- CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170 Derio, Spain.,Departament of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, 48940 Leioa, Bizkaia, Spain.,UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal
| | - Stefania Mirabella
- CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170 Derio, Spain.,Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, 50019 Sesto Fiorentino (FI), Italy
| | - Ana Poveda
- CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170 Derio, Spain
| | - Ana Arda
- CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170 Derio, Spain
| | - Jesus Jimenez-Barbero
- CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170 Derio, Spain.,Ikerbasque, Basque Foundation for Science, Maria Diaz de Haro 13, 48009 Bilbao, Spain.,Departament of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, 48940 Leioa, Bizkaia, Spain
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21
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de Las Rivas M, Lira-Navarrete E, Daniel EJP, Compañón I, Coelho H, Diniz A, Jiménez-Barbero J, Peregrina JM, Clausen H, Corzana F, Marcelo F, Jiménez-Osés G, Gerken TA, Hurtado-Guerrero R. The interdomain flexible linker of the polypeptide GalNAc transferases dictates their long-range glycosylation preferences. Nat Commun 2017; 8:1959. [PMID: 29208955 PMCID: PMC5716993 DOI: 10.1038/s41467-017-02006-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Accepted: 11/01/2017] [Indexed: 01/15/2023] Open
Abstract
The polypeptide GalNAc-transferases (GalNAc-Ts), that initiate mucin-type O-glycosylation, consist of a catalytic and a lectin domain connected by a flexible linker. In addition to recognizing polypeptide sequence, the GalNAc-Ts exhibit unique long-range N- and/or C-terminal prior glycosylation (GalNAc-O-Ser/Thr) preferences modulated by the lectin domain. Here we report studies on GalNAc-T4 that reveal the origins of its unique N-terminal long-range glycopeptide specificity, which is the opposite of GalNAc-T2. The GalNAc-T4 structure bound to a monoglycopeptide shows that the GalNAc-binding site of its lectin domain is rotated relative to the homologous GalNAc-T2 structure, explaining their different long-range preferences. Kinetics and molecular dynamics simulations on several GalNAc-T2 flexible linker constructs show altered remote prior glycosylation preferences, confirming that the flexible linker dictates the rotation of the lectin domain, thus modulating the GalNAc-Ts' long-range preferences. This work for the first time provides the structural basis for the different remote prior glycosylation preferences of the GalNAc-Ts.
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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, 50018, Spain
| | - Erandi Lira-Navarrete
- BIFI, University of Zaragoza, BIFI-IQFR (CSIC) Joint Unit, Mariano Esquillor s/n, Campus Rio Ebro, Edificio I+D, Zaragoza, 50018, Spain
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, Copenhagen, DK-2200, Denmark
| | | | - Ismael Compañón
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, E-26006, Logroño, Spain
| | - Helena Coelho
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade de Nova de Lisboa, Caparica, 2829-516, Portugal
- CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170, Derio, Spain
- Departament of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, Leioa, Bizkaia, 48940, Spain
| | - Ana Diniz
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade de Nova de Lisboa, Caparica, 2829-516, Portugal
| | - Jesús Jiménez-Barbero
- CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170, Derio, Spain
- Departament of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, Leioa, Bizkaia, 48940, Spain
- Ikerbasque, Basque Foundation for Science, Maria Diaz de Haro 13, 48009, Bilbao, Spain
| | - Jesús M Peregrina
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, E-26006, Logroño, Spain
| | - Henrik Clausen
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, Copenhagen, DK-2200, Denmark
| | - Francisco Corzana
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, E-26006, Logroño, Spain
| | - Filipa Marcelo
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade de Nova de Lisboa, Caparica, 2829-516, Portugal
| | - Gonzalo Jiménez-Osés
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, E-26006, Logroño, Spain
| | - Thomas A Gerken
- Department of Biochemistry, Case Western Reserve University, Cleveland, 44106, OH, USA
- Department of Pediatrics, Case Western Reserve University, Cleveland, 44106, OH, USA
- Department of Chemistry, Case Western Reserve University, Cleveland, 44106, 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, 50018, Spain.
- Fundación ARAID, 50018, Zaragoza, Spain.
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22
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Silva S, Espada E, Melo J, Lima M, Ionita A, Carda J, Andrade J, Neves M, Cabral R, Mendes T, Gaspar C, Alves D, Pina F, Botelho de Sousa A, Coelho H, Montalvão A, Vitória H, Lima F, Coutinho J, Lúcio P, Guimarães J, Ribeiro M, Gomes da Silva M, Raposo J. PORTUGUESE REAL-LIFE EXPERIENCE WITH IBRUTINIB OUTSIDE CLINICAL TRIALS - A MULTICENTER ANALYSIS. Hematol Oncol 2017. [DOI: 10.1002/hon.2439_146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- S. Silva
- Serviço de Hematologia e Transplantação de Medula; Hospital de Santa Maria, Centro Hospitalar Lisboa Norte; Lisbon Portugal
| | - E. Espada
- Serviço de Hematologia e Transplantação de Medula; Hospital de Santa Maria, Centro Hospitalar Lisboa Norte; Lisbon Portugal
| | - J.A. Melo
- Serviço de Hematologia e Transplantação de Medula; Hospital de Santa Maria, Centro Hospitalar Lisboa Norte; Lisbon Portugal
| | - M.P. Lima
- Departamento de Hematologia; Instituto Português de Oncologia de Lisboa Francisco Gentil; Lisbon Portugal
| | - A. Ionita
- Departamento de Hematologia; Instituto Português de Oncologia de Lisboa Francisco Gentil; Lisbon Portugal
| | - J.P. Carda
- Serviço de Hematologia Clínica; Centro Hospitalar e Universitário de Coimbra; Coimbra Portugal
| | - J. Andrade
- Serviço de Hematologia Clínica; Centro Hospitalar de São João; Porto Portugal
| | - M. Neves
- Unidade de Hemato-oncologia; Fundação Champalimaud; Lisbon Portugal
| | - R. Cabral
- Serviço de Hematologia Clínica; Hospital Geral de Santo António, Centro Hospitalar do Porto; Porto Portugal
| | - T. Mendes
- Serviço de Hematologia, Hospital de São Francisco Xavier, Centro Hospitalar de Lisboa Ocidental; Lisbon Portugal
| | - C. Gaspar
- Serviço de Hematologia; Hospital Santo António dos Capuchos, Centro Hospitalar Lisboa Central; Lisbon Portugal
| | - D. Alves
- Hematologia Clínica; Hospital Lusíadas Lisboa; Lisbon Portugal
| | - F. Pina
- Serviço de Hematologia; Hospital do Espírito Santo de Évora; Évora Portugal
| | - A. Botelho de Sousa
- Serviço de Hematologia; Hospital Santo António dos Capuchos, Centro Hospitalar Lisboa Central; Lisbon Portugal
| | - H. Coelho
- Serviço de Hematologia, Centro Hospitalar de Vila Nova de Gaia; Vila Nova de Gaia Portugal
| | - A. Montalvão
- Hematologia Clínica; Unidade Local de Saúde do Baixo Alentejo; Beja Portugal
| | - H. Vitória
- Hematologia; Centro Hospitalar Tondela - Viseu; Tondela Portugal
| | - F. Lima
- Serviço de Hematologia, Hospital de São Francisco Xavier, Centro Hospitalar de Lisboa Ocidental; Lisbon Portugal
| | - J. Coutinho
- Serviço de Hematologia Clínica; Hospital Geral de Santo António, Centro Hospitalar do Porto; Porto Portugal
| | - P. Lúcio
- Unidade de Hemato-oncologia; Fundação Champalimaud; Lisbon Portugal
| | - J.E. Guimarães
- Serviço de Hematologia Clínica; Centro Hospitalar de São João; Porto Portugal
| | - M.L. Ribeiro
- Serviço de Hematologia Clínica; Centro Hospitalar e Universitário de Coimbra; Coimbra Portugal
| | - M. Gomes da Silva
- Departamento de Hematologia; Instituto Português de Oncologia de Lisboa Francisco Gentil; Lisbon Portugal
| | - J. Raposo
- Serviço de Hematologia e Transplantação de Medula; Hospital de Santa Maria, Centro Hospitalar Lisboa Norte; Lisbon Portugal
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23
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Gonçalves A, Wen X, Campainha S, Coelho H, Barroso A. Lymphomatoid granulomatosis - A rare pulmonary lymphoproliferative disease. Rev Port Pneumol (2006) 2016; 22:248-9. [PMID: 26898887 DOI: 10.1016/j.rppnen.2015.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 10/07/2015] [Accepted: 10/24/2015] [Indexed: 11/15/2022] Open
Affiliation(s)
- A Gonçalves
- Centro Hospitalar Vila Nova de Gaia/Espinho, EPE, Pulmonology Department, Portugal.
| | - X Wen
- Centro Hospitalar Vila Nova de Gaia/Espinho, EPE, Pathology Department, Portugal
| | - S Campainha
- Centro Hospitalar Vila Nova de Gaia/Espinho, EPE, Pulmonology Department, Portugal
| | - H Coelho
- Centro Hospitalar Vila Nova de Gaia/Espinho, EPE, Hematology Department, Portugal
| | - A Barroso
- Centro Hospitalar Vila Nova de Gaia/Espinho, EPE, Pulmonology Department, Portugal
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24
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Grenha V, Parada B, Ferreira C, Figueiredo A, Macário F, Alves R, Coelho H, Sepúlveda L, Freire MJ, Retroz E, Mota A. Hepatitis B virus, hepatitis C virus, and kidney transplant acute rejection and survival. Transplant Proc 2016; 47:942-5. [PMID: 26036490 DOI: 10.1016/j.transproceed.2015.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The effect of hepatitis Bs-antigen (AgHBs) and anti-hepatitis C virus (HCV) positivity on renal transplant outcomes is still controversial. Some studies describe higher rates of acute rejection and allograft loss, and greater mortality in transplant recipients with hepatitis. We retrospectively evaluated data from 2284 allograft recipients who underwent transplantation at our hospital between July 1980 and December 2012. Statistical analysis was made using chi-square and Student t tests, Kaplan-Meier curves, and survival analysis. We identified 62 AgHBs+ patients, 99 anti-HCV+ patients, and 14 AgHBs+/anti-HCV+ patients; 2109 patients had "no hepatitis." Mean follow-up time was 7.93 years. No statistical differences were identified on allograft acute rejection rate or patient survival between groups. AgHBs+ patients had, however, an inferior allograft survival, with statistical significance. According to our study, hepatitis B has a harmful impact on allograft survival, although it does not compromise the patient survival.
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Affiliation(s)
- V Grenha
- Serviço de Urologia e Transplantação Renal, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.
| | - B Parada
- Serviço de Urologia e Transplantação Renal, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - C Ferreira
- Serviço de Urologia e Transplantação Renal, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - A Figueiredo
- Serviço de Urologia e Transplantação Renal, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - F Macário
- Serviço de Nefrologia, Centro Hospitalar e Universitário de Coimbra, Praceta Prof. Mota Pinto, Coimbra, Portugal
| | - R Alves
- Serviço de Nefrologia, Centro Hospitalar e Universitário de Coimbra, Praceta Prof. Mota Pinto, Coimbra, Portugal
| | - H Coelho
- Serviço de Urologia e Transplantação Renal, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - L Sepúlveda
- Serviço de Urologia e Transplantação Renal, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - M J Freire
- Serviço de Urologia e Transplantação Renal, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - E Retroz
- Serviço de Urologia e Transplantação Renal, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - A Mota
- Serviço de Urologia e Transplantação Renal, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
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25
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Vila-Real H, Coelho H, Rocha J, Fernandes A, Ventura MR, Maycock CD, Iranzo O, Simplício AL. Peptidomimetic β-Secretase Inhibitors Comprising a Sequence of Amyloid-β Peptide for Alzheimer’s Disease. J Med Chem 2015; 58:5408-18. [DOI: 10.1021/acs.jmedchem.5b00658] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Helder Vila-Real
- Instituto de Biologia Experimental e Tecnológica, Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal
- Instituto de Tecnologia Química e Biológica, Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal
| | - Helena Coelho
- Instituto de Biologia Experimental e Tecnológica, Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal
- Instituto de Tecnologia Química e Biológica, Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal
| | - João Rocha
- Faculdade
de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Adelaide Fernandes
- Faculdade
de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - M. Rita Ventura
- Instituto de Tecnologia Química e Biológica, Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal
| | - Christopher D. Maycock
- Instituto de Tecnologia Química e Biológica, Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal
- Faculdade
de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Olga Iranzo
- Instituto de Tecnologia Química e Biológica, Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal
| | - Ana L. Simplício
- Instituto de Biologia Experimental e Tecnológica, Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal
- Instituto de Tecnologia Química e Biológica, Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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28
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Massa AF, Campos M, Osório Ferreira E, Tente D, Cabeçadas J, Mota M, Coelho H, Baptista A. Cutaneous Epstein-Barr virus-associated lymphoproliferative polymorphic disease - AIDS presenting manifestation. J Eur Acad Dermatol Venereol 2015; 30:554-6. [PMID: 25623621 DOI: 10.1111/jdv.12958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A F Massa
- Department of Dermatology, Centro Hospitalar de V.N.Gaia/Espinho, EPE, Vila Nova de Gaia, Portugal
| | - M Campos
- Department of Dermatology, Centro Hospitalar de V.N.Gaia/Espinho, EPE, Vila Nova de Gaia, Portugal
| | - E Osório Ferreira
- Department of Dermatology, Centro Hospitalar de V.N.Gaia/Espinho, EPE, Vila Nova de Gaia, Portugal
| | - D Tente
- Department of Pathology, Centro Hospitalar de V.N.Gaia/Espinho, EPE, Vila Nova de Gaia, Portugal
| | - J Cabeçadas
- Department of Pathology, IPO Lisboa, Lisboa, Portugal
| | - M Mota
- Infectious Disease Unit, Centro Hospitalar de V.N.Gaia/Espinho, EPE, Vila Nova de Gaia, Portugal
| | - H Coelho
- Department of Haematology, Centro Hospitalar de V.N.Gaia/Espinho, EPE, Vila Nova de Gaia, Portugal
| | - A Baptista
- Department of Dermatology, Centro Hospitalar de V.N.Gaia/Espinho, EPE, Vila Nova de Gaia, Portugal
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29
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Snowsill T, Huxley N, Hoyle M, Crathorne L, Haasova M, Briscoe S, Coelho H, Medina-Lara A, Mujica MR, Napier M, Hyde C. Model-Based Cost-Utility Analysis of Erythropoiesis-Stimulating Agents for the Treatment of Cancer-Treatment Induced Anaemia in the UK NHS. Value Health 2014; 17:A641-A642. [PMID: 27202294 DOI: 10.1016/j.jval.2014.08.2316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
| | - N Huxley
- University of Exeter, Exeter, UK
| | - M Hoyle
- University of Exeter, Exeter, UK
| | | | | | | | - H Coelho
- University of Exeter, Exeter, UK
| | | | | | - M Napier
- Royal Devon & Exeter NHS FT, Exeter, UK
| | - C Hyde
- University of Exeter, Exeter, UK
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30
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Marcelo F, Garcia-Martin F, Matsushita T, Sardinha J, Coelho H, Oude-Vrielink A, Koller C, André S, Cabrita EJ, Gabius HJ, Nishimura SI, Jiménez-Barbero J, Cañada FJ. Delineating Binding Modes of Gal/GalNAc and Structural Elements of the Molecular Recognition of Tumor-Associated Mucin Glycopeptides by the Human Macrophage Galactose-Type Lectin. Chemistry 2014; 20:16147-55. [DOI: 10.1002/chem.201404566] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Indexed: 01/05/2023]
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31
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Crathorne L, Huxley N, Haasova M, Snowsill T, Jones-Hughes T, Hoyle M, Briscoe S, Coelho H, Long L, Medina-Lara A, Mujica-Mota R, Napier M, Hyde C. What is the Clinical Effectiveness of Erythropoiesis Stimulating Agents for the Treatment of Cancer Treatment-Induced Anaemia? Ann Oncol 2014. [DOI: 10.1093/annonc/mdu356.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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32
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Huxley N, Snowsill T, Hoyle M, Crathorne L, Haasova M, Briscoe S, Coelho H, Medina-Lara A, Mujica-Mota R, Napier M, Hyde C. A Cost-Effectiveness Analysis of Erythropoiesis-Stimulating Agents for Treating Cancer-Treatment Induced Anaemia. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu341.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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33
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Gonzalez Sanchidrian S, Cebrian Andrada CJ, Jimenez Herrero MC, Deira Lorenzo JL, Labrador Gomez PJ, Marin Alvarez JP, Garcia-Bernalt Funes V, Gallego Dominguez S, Castellano Cervino I, Gomez-Martino Arroyo JR, Parapiboon W, Boonsom P, Stadler T, Raddatz A, Poppleton A, Hubner W, Fliser D, Klingele M, Rosa J, Sydor A, Krzanowski M, Chowaniec E, Sulowicz W, Vidal E, Mergulhao C, Pinheiro H, Sette L, Amorim G, Fernandes G, Valente L, Ouaddi F, Tazi I, Mabrouk K, Zamd M, El Khayat S, Medkouri G, Benghanem M, Ramdani B, Dabo G, Badaoui L, Ouled Lahcen A, Sosqi M, Marih L, Chakib A, Marhoum El Filali K, Oliveira MJC, Silva Junior G, Sampaio AM, Montenegro B, Alves MP, Henn GAL, Rocha HAL, Meneses GC, Martins AMC, Sanches TR, Andrade LC, Seguro AC, Liborio AB, Daher EF, Haase M, Robra BP, Hoffmann J, Isermann B, Henkel W, Bellomo R, Ronco C, Haase-Fielitz A, Kee YK, Kim YL, Kim EJ, Park JT, Han SH, Yoo TH, Kang SW, Choi KH, Oh HJ, Dharmendra P, Vinay M, Mohit M, Rajesh G, Dhananjai A, Pankaj B, Campos P, Pires A, Inchaustegui L, Avdoshina S, Villevalde S, Kobalava Z, Mukhopadhyay P, Das B, Mukherjee D, Mishra R, Kar M, Biswas NM, Onuigbo M, Agbasi N, Ponce D, Albino BB, Balbi AL, Klin P, Zambrano C, Gutierrez LM, Varela Falcon L, Zeppa F, Bilbao A, Klein F, Raffaele P, Chang KY, Park HS, Kim HW, Choi BS, Park CW, Yang CW, Jin DC, Checherita IA, Peride I, David C, Radulescu D, Ciocalteu A, Niculae A, Balbi A, Goes C, Buffarah M, Xavier P, Ponce D, Karimi SM, Cserep G, Gannon D, Sinnamon K, Saudan P, Alves C, De La Fuente V, Ponte B, Carballo S, Rutschmann O, Martin PY, Stucker F, Rosa J, Sydor A, Krzanowski M, Chowaniec E, Sulowicz W, Saurina A, Pardo V, Barba N, Jovell E, Pou M, Esteve V, Fulquet M, Duarte V, Ramirez De Arellano M, Sun IO, Yoon HJ, Kim JG, Lee KY, Tiranathanagul K, Sallapant S, Eiam-Ong S, Treeprasertsuk S, Peride I, Radulescu D, David C, Niculae A, Checherita IA, Geavlete B, Ciocalteu A, Ando M, Shingai N, Morito T, Ohashi K, Nitta K, Duarte DB, Silva Junior G, Vanderlei LA, Bispo RKA, Pinheiro ME, Daher EF, Ponce D, Si Nga H, Paes A, Medeiros P, Balbi A, Gentil TMS, Assis LS, Amaral AP, Alvares VRCA, Scaranello KLRS, Soeiro EMD, Castanho V, Castro I, Laranja SM, Barreto S, Molina M, Silvisk M, Pereira BJ, Izem A, Mabrouk K, Amer Mhamed D, El Khayat SS, Zamd M, Medkouri G, Benghanem M, Ramdani B, Donadio C, Klimenko A, Villevalde S, Kobalava Z, Andreoli MC, Souza NK, Ammirati AL, Matsui TN, Naka EL, Carneiro FD, Ramos AC, Lopes RK, Dias ES, Coelho MP, Afonso RC, Ferraz-Neto BH, Almeida MD, Durao M, Batista MC, Monte JC, Pereira VG, Santos OP, Santos BC, Klimenko A, Villevalde S, Kobalava Z, Silva VC, Raimann JG, Nerbass FB, Vieira MA, Dabel P, Richter A, Callegari J, Carter M, Levin NW, Winchester JF, Kotanko P, Pecoits-Filho R, Gjyzari A, Thereska N, Barbullushi M, Koroshi A, Petrela E, Mumajesi S, Kim YL, Kee YK, Han JS, Oh HJ, Park JT, Han SH, Yoo TH, Kang SW, Simone S, Scrascia G, Montemurno E, Rotunno C, Mastro F, Gesualdo L, Paparella D, Pertosa G, Lopes D, Santos C, Cunha C, Gomes AM, Coelho H, Seabra J, Qasem A, Farag S, Hamed E, Emara M, Bihery A, Pasha H, Mukhopadhyay P, Chhaya S, Mukhopadhyay G, Das C, Silva Junior G, Vieira APF, Lima LLL, Nascimento LS, Daher EF, Zawiasa A, Ko Odziejska M, Bia Asiewicz P, Nowak D, Nowicki M. CLINICAL ACUTE KIDNEY INJURY 2. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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Duarte R, Pereira T, Pinto P, Coelho H. [Percutaneous Image-guided cryoablation for localized bone plasmacytoma treatment]. Radiologia 2012; 56:e1-4. [PMID: 22621822 DOI: 10.1016/j.rx.2012.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 02/06/2012] [Accepted: 02/09/2012] [Indexed: 10/28/2022]
Abstract
Bone plasmacytoma (BP) occurs in most patients with multiple myeloma and is highly disabling. Radiotherapy is the primary treatment modality for BP and, although local control rates are excellent, several weeks are needed before the treatment is completed and for patients to note significant pain relief. Over the past decade, percutaneous image-guided cryoablation has emerged as a safe and effective alternative in the management of localized bone metastasis in solid tumours. In this report the author's show that a localized BP was successfully treated using this procedure. Furthermore, some of the most relevant potential advantages that makes this procedure more attractive than other alternative techniques are highlighted.
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Affiliation(s)
- R Duarte
- Departamento de Radiología, Centro Hospitalar Vila Nova de Gaia/Espinho, Vila Nova de Gaia, Portugal; JCC - Diagnóstico por Imagem, Hospital Particular de Viana do Castelo, Viana do Castelo, Portugal.
| | - T Pereira
- Departamento de Radiología, Centro Hospitalar Vila Nova de Gaia/Espinho, Vila Nova de Gaia, Portugal
| | - P Pinto
- Departamento de Hematología, Centro Hospitalar Vila Nova de Gaia/Espinho, Vila Nova de Gaia, Portugal
| | - H Coelho
- Departamento de Hematología, Centro Hospitalar Vila Nova de Gaia/Espinho, Vila Nova de Gaia, Portugal
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35
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Leao R, Azinhais P, Retroz E, Casalta J, Pereira B, Borges R, Grenha V, Coelho H. UP-01.198 Partial Nephrectomy vs Laparoscopic Radical Nephrectomy Renal Function Outcomes. Urology 2011. [DOI: 10.1016/j.urology.2011.07.748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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36
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Coelho H, Leão R, Godinho R, Grenha V, Peralta P, Borges R, Pereira B, Temido P, Azinhais P, Sousa L, Sobral F. UP-01.046 Intravesical Bacillus Calmette-Guérin Immunotherapy: The Experience of the Centro Hospitalar De Coimbra Urology Department. Urology 2011. [DOI: 10.1016/j.urology.2011.07.598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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37
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Jorge Pereira B, Azinhais P, Brandão Á, Borges R, Leão R, Grenha V, Coelho H, Sobral F. UP-01.028 Narrow Band Imaging (NBI) Assisted TURBt. Does It Improve Detection and Treatment Rates? Urology 2011. [DOI: 10.1016/j.urology.2011.07.580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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38
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Quintanilha J, Dewulf N, Coelho H. P1-116 Alcohol use among Brazilian pharmacy students. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976d.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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39
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Jorge Pereira B, Retroz E, Brandõ Á, Coelho H, Borges R, Leaõ R, Grenha V, Sobral F. UP-2.01: Endoscopic removal of spontaneously migrated IUD to the bladder. Urology 2010. [DOI: 10.1016/j.urology.2010.07.235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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40
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Leão R, Azinhais P, Pereira B, Borges R, Grenha V, Coelho H, Retroz E, Sobral F. UP-2.58: Schistosomiasis: unusual cause of LUTS in Europe. Urology 2010. [DOI: 10.1016/j.urology.2010.07.292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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41
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Zanatta N, da Fernandes L, München S, Coelho H, Amaral S, Fantinel L, Bonacorso H, Martins M. An Efficient Synthesis of Oxa- and Aza-Condensed Tetrahydropyridines from Cyclic Enones. SYNTHESIS-STUTTGART 2010. [DOI: 10.1055/s-0029-1218779] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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42
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Serôdio J, Pereira S, Furtado J, Silva R, Coelho H, Calado R. In vivo quantification of kleptoplastic chlorophyll a content in the “solar-powered” sea slug Elysia viridis using optical methods: spectral reflectance analysis and PAM fluorometry. Photochem Photobiol Sci 2010; 9:68-77. [DOI: 10.1039/b9pp00058e] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Vilar R, Coelho H, Rodrigues E, Gama MJ, Rivera I, Taioli E, Lechner MC. Association of A313 G polymorphism (GSTP1*B) in the glutathione-S-transferase P1 gene with sporadic Parkinson's disease. Eur J Neurol 2007; 14:156-61. [PMID: 17250723 DOI: 10.1111/j.1468-1331.2006.01590.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Genetic predisposition, environmental toxins and aging contribute to Parkinson's disease (PD) multifactorial etiology. Weak environmental neurotoxic factors may accumulate over time increasing the disease risk in genetically predisposed subjects. Polymorphic genes encoding drug-metabolizing-enzymes (DMEs) are considered to account for PD susceptibility by determining individual toxic response variability. In this work, the allelic distributions and genotype associations of three major brain-expressed DMEs were characterized, in sporadic PD cases and controls. No significant association was found between CYP2D6 genotype and PD, but subjects with extensive metabolizer (EM) CYP2D6 phenotype, and the variant GSTP1*B genotype were at significantly higher PD risk than the corresponding poor or intermediary metabolizers (CYP2D6 poor metabolizer phenotype+intermediary metabolizers). A significant association was observed between the GSTP1*B allele and zygosity with PD (GSTP1*A/*B- 51.58%/34.37%, odds ratio (OR) = 2.29; 95% confidence interval (95% CI) = 1.25-4.18; *B/*B- 6.32%/1.05%, OR = 10.67; 95% CI = 1.19-94.79). This association was particularly strong in the elder patients group (> or =69 year) who showed double PD risk for GSTP1*B heterozygous, whilst GSTP1*B/*B homozygous were exclusively found amongst patients. An interaction between GSTM1 and GSTP1 was observed in this late onset PD group. The present results suggest that native GSTP1 encoding the fully active transferase variant should play a relevant role in dopaminergic neuroprotection.
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Affiliation(s)
- R Vilar
- Faculty of Pharmacy, University of Lisbon, Lisboa, Portugal
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Serôdio J, Vieira S, Cruz S, Coelho H. Rapid light-response curves of chlorophyll fluorescence in microalgae: relationship to steady-state light curves and non-photochemical quenching in benthic diatom-dominated assemblages. Photosynth Res 2006; 90:29-43. [PMID: 17111236 DOI: 10.1007/s11120-006-9105-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2006] [Accepted: 08/31/2006] [Indexed: 05/12/2023]
Abstract
Rapid light-response curves (RLC) of variable chlorophyll fluorescence were measured on estuarine benthic microalgae with the purpose of characterising its response to changes in ambient light, and of investigating the relationship to steady-state light-response curves (LC). The response of RLCs to changes in ambient light (E, defined as the irradiance level to which a sample is acclimated to prior to the start of the RLC) was characterised by constructing light-response curves for the RLC parameters alpha (RLC), the initial slope, ETR(m,RLC), the maximum relative electron transport rate, and E (k,RLC), the light-saturation parameter. Measurements were carried out on diatom-dominated suspensions of benthic microalgae and RLC and LC parameters were compared for a wide range of ambient light conditions, time of day, season and sample taxonomic composition. The photoresponse of RLC parameters was typically bi-phasic, consisting of an initial increase of all parameters under low ambient light (E < 21-181 micromol m(-2) s(-1)), and of a phase during which alpha (RLC) decreased significantly with E, and the increase of ETR(m,RLC) and E (k,RLC) was attenuated. The relationship between RLC and LC parameters was dependent on ambient irradiance, with significant correlations being found between alpha (RLC) and alpha, and between ETR(m,RLC) and ETR(m), for samples acclimated to low and to high ambient irradiances, respectively. The decline of alpha (RLC) under high light (Deltaalpha (RLC)) was strongly correlated (P < 0.001 in all cases) with the level of non-photochemical quenching (NPQ) measured before each RLC. These results indicate the possibility of using RLCs to characterise the steady-state photoacclimation status of a sample, by estimating the LC parameter E (k), and to trace short-term changes in NPQ levels without dark incubation.
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Affiliation(s)
- João Serôdio
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal.
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Leitão P, Coelho H, Santos A, Neves R. Modelling the main features of the Algarve coastal circulation during July 2004: A downscaling approach. ACTA ACUST UNITED AC 2005. [DOI: 10.1080/17417530601127704] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Branca R, Costa E, Rocha S, Coelho H, Quintanilha A, Cabeda JM, Santos-Silva A, Barbot J. Coexistence of congenital red cell pyruvate kinase and band 3 deficiency. ACTA ACUST UNITED AC 2004; 26:297-300. [PMID: 15279669 DOI: 10.1111/j.1365-2257.2004.00617.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The authors report the case of a 9-year-old Caucasian girl, born in northern Portugal, with chronic nonspherocytic haemolytic anaemia and without family history of anaemia. The aethiological study of this anaemia revealed pyruvate kinase deficiency (PKD), because of two previously described mutations (426Arg-->Trp and 510Arg-->Gln). Since the blood smear revealed features not fully compatible with PKD diagnosis, additional tests were performed for the propositus and her parents, namely red blood cell membrane protein analysis. A decrease in proteins band 3 (15%) and 4.2 (18%) was found in the propositus. Her father presented only a decrease in band 3 (11%). Coexistence of PKD and erythrocyte membrane proteins deficiency in the same patient is very uncommon. Our findings suggest that a careful blood smear observation may lead to the identification of a combined deficiency in erythrocyte membrane proteins and enzymopathies.
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MESH Headings
- Anemia, Hemolytic, Congenital/etiology
- Anemia, Hemolytic, Congenital/genetics
- Anemia, Hemolytic, Congenital/metabolism
- Anion Exchange Protein 1, Erythrocyte/deficiency
- Anion Exchange Protein 1, Erythrocyte/genetics
- Anion Exchange Protein 1, Erythrocyte/metabolism
- Child
- DNA Mutational Analysis
- Erythrocytes/enzymology
- Erythrocytes/metabolism
- Exons
- Family Health
- Female
- Hematologic Tests
- Heterozygote
- Humans
- Point Mutation
- Pyruvate Kinase/deficiency
- Pyruvate Kinase/genetics
- Pyruvate Kinase/metabolism
- Pyruvate Metabolism, Inborn Errors/complications
- Pyruvate Metabolism, Inborn Errors/genetics
- Pyruvate Metabolism, Inborn Errors/metabolism
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Affiliation(s)
- R Branca
- Serviço de Hematologia, Hospital de Crianças Maria Pia, Porto, Portugal.
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Pereira L, Sousa A, Coelho H, Amado AM, Ribeiro-Claro PJA. Use of FTIR, FT-Raman and 13C-NMR spectroscopy for identification of some seaweed phycocolloids. Biomol Eng 2003; 20:223-8. [PMID: 12919801 DOI: 10.1016/s1389-0344(03)00058-3] [Citation(s) in RCA: 258] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Many seaweeds produce phycocolloids, stored in the cell wall. Members of the Rhodophyceae produce polysaccharides the main components of which are galactose (galactans)-agar and carrageenan. In addition, alginic acid is extracted from members of the Phaeophyceae. This is a binary polyuronide made up of mannuronic acid and guluronic acid. The wide uses of these phycocolloids are based on their gelling, viscosifying and emulsifying properties, which generate an increasing commercial and scientific interest. In this work, the FTIR and FT-RAMAN spectra of carrageenan and agar, obtained by alkaline extraction from different seaweeds (e.g. Mastocarpus stellatus, Chondrus crispus, Calliblepharis jubata, Chondracanthus acicularis, Chondracanthus teedei and Gracilaria gracilis), were recorded in order to identify the type of phycocolloid produced. The spectra of commercial carrageenan, alginic acid and agar samples (SIGMA and TAAB laboratories) were used as references. Special emphasis was given to the 500-1500 cm(-1) region, which presents several vibrational modes, sensitive to the type of polysaccharide and to the type of glycosidic linkage. The FT-Raman spectra present a higher resolution than FTIR spectra, this allowing the identification of a larger number of characteristic bands. In some cases, phycocolloids can be identified by FT-Raman spectroscopy alone.
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Affiliation(s)
- Leonel Pereira
- Laboratório de M.E. e Ficologia, Departamento de Botânica, Universidade de Coimbra, 3000 Coimbra, Portugal.
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Paiva T, Coelho H, Araújo MT, Rodrigues R, Almeida A, Navarro T, Cruz M, Carneiro G, Belo C. Neurological teleconsultation for general practitioners. J Telemed Telecare 2002; 7:149-54. [PMID: 11346474 DOI: 10.1258/1357633011936309] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A neurology teleconsulting network was implemented between a university hospital in Lisbon and five nearby health centres. PCs equipped for videoconferencing were installed, connected by ISDN lines at 128 kbit/s. Fifty-three general practitioners (GPs) were surveyed. The survey showed that the GPs had difficulties in using computers, but they had definite intentions to use teleconsultation for neurology cases and 83% of the respondents stated that they would probably use the technique. During the study, 90 neurology teleconsultations took place over 55 weeks. The average consultation rate was 1.6 teleconsultations per week (SD 1.3, range 0-6). The conferences lasted 10-45 min. Longer teleconsultations were mainly due to technical difficulties in using computers on the part of users with a low level of computer literacy. The patients were 42 males and 46 females, with a mean age of 38 years (SD 20, range 1-84); two patients were discussed twice. The benefits consisted mainly of advice on patient medication, diagnosis and the prevention of unnecessary specialist consultations or laboratory examinations. Doctor-doctor teleconsultation allows the rapid resolution of queries which otherwise cause stress to patients and increase the cost and complexity of care.
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Affiliation(s)
- T Paiva
- Hospital de Santa Maria, Lisbon, Portugal.
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Alves MJ, Coelho H, Collares-Pereira MJ, Coelho MM. Mitochondrial DNA variation in the highly endangered cyprinid fish Anaecypris hispanica: importance for conservation. Heredity (Edinb) 2001; 87:463-73. [PMID: 11737295 DOI: 10.1046/j.1365-2540.2001.00929.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Anaecypris hispanica is a cyprinid fish which is endemic to the Guadiana River basin in the Iberian Peninsula, and whose abundance and geographical range have contracted considerably during the last 20 years. We investigated mitochondrial DNA cytochrome b and control region variation among specimens representative of nine tributaries, using direct sequencing and diagnostic restriction fragment length polymorphism. The samples from the Caia, Degebe, Ardila, and Odeleite rivers exhibited haplotypes that differed by a large number of site differences, which may be indicative of population bottlenecks that have caused stochastic extinction of haplotypes. In contrast, the populations from the Xévora, Chança, Carreiras, Vascão and Foupana rivers exhibited low levels of nucleotide diversity, which together with high haplotype diversity may also be indicative of genetic bottleneck events, with subsequent population expansion. Phylogenetic analyses, a minimum spanning network, and an analysis of molecular variance revealed geographical structuring, suggesting limited or no gene flow between populations. The populations from extreme southern rivers (Foupana and Odeleite) are monophyletic entities, suggesting that they have been isolated, probably as a consequence of brackish water upstream of their confluence with the Guadiana. The results suggest that the Foupana and the Odeleite populations, and the remaining northern populations altogether should be managed as three distinct Evolutionary Significant Units (ESUs). Within the northern ESU, four Management Units (MUs) should be considered.
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Affiliation(s)
- M J Alves
- Centro de Biologia Ambiental/Departamento de Zoologia e Antropologia, Faculdade de Ciências, Universidade de Lisboa, Campo Grande C2 - Piso 3, 1749-016 Lisbon, Portugal
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Paiva T, Coelho H, Almeida A, Navarro T, Cruz M, Carneiro G, Araújo MT, Belo C. Neuroteleconsultation for general practitioners. Stud Health Technol Inform 2001; 78:329-41. [PMID: 11151604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
- T Paiva
- Hospital de Santa Maria, Lisbon, Portugal.
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