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Thielens NM, Gout E, Lacroix M, Reiser JB, Gaboriaud C. Analysis of the Ligand Recognition Specificities of Human Ficolins Using Surface Plasmon Resonance. Methods Mol Biol 2021; 2227:205-226. [PMID: 33847944 DOI: 10.1007/978-1-0716-1016-9_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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] [Indexed: 06/12/2023]
Abstract
Ficolins are innate immune recognition proteins involved in activation of the lectin complement pathway. These oligomeric lectin-like proteins are assembled from subunits consisting of a collagen-like triple helix and a trimeric fibrinogen-like recognition domain. In humans, three ficolins coexist: they differ in their ligand binding specificities, but share the capacity to associate with proteases through their collagen-like stalks and trigger complement activation. We describe methods to decipher the recognition specificities of ficolins, based on surface plasmon resonance, an optical technique allowing real-time and label-free monitoring of biomolecular interactions. This technique was mainly used to characterize and compare binding of the three recombinant full-length ficolins and of their isolated recognition domains to various immobilized BSA-glycoconjugates, acetylated BSA or biotinylated heparin. The avidity phenomenon that enhances the apparent affinity of interactions between oligomeric lectin-like proteins and the multivalent ligands is also discussed.
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Affiliation(s)
| | - Evelyne Gout
- Univ. Grenoble Alpes, CNRS, CEA, IBS, Grenoble, France
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Ortega-Rodriguez U, Portillo S, Ashmus RA, Duran JA, Schocker NS, Iniguez E, Montoya AL, Zepeda BG, Olivas JJ, Karimi NH, Alonso-Padilla J, Izquierdo L, Pinazo MJ, de Noya BA, Noya O, Maldonado RA, Torrico F, Gascon J, Michael K, Almeida IC. Purification of Glycosylphosphatidylinositol-Anchored Mucins from Trypanosoma cruzi Trypomastigotes and Synthesis of α-Gal-Containing Neoglycoproteins: Application as Biomarkers for Reliable Diagnosis and Early Assessment of Chemotherapeutic Outcomes of Chagas Disease. Methods Mol Biol 2019; 1955:287-308. [PMID: 30868536 PMCID: PMC6589430 DOI: 10.1007/978-1-4939-9148-8_22] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Chagas disease (ChD), caused by the protozoan parasite Trypanosoma cruzi, affects millions of people worldwide. Chemotherapy is restricted to two drugs, which are partially effective and may cause severe side effects, leading to cessation of treatment in a significant number of patients. Currently, there are no biomarkers to assess therapeutic efficacy of these drugs in the chronic stage. Moreover, no preventive or therapeutic vaccines are available. In this chapter, we describe the purification of Trypanosoma cruzi trypomastigote-derived glycosylphosphatidylinositol (GPI)-anchored mucins (tGPI-mucins) for their use as antigens for the reliable primary or confirmatory diagnosis and as prognostic biomarkers for early assessment of cure following ChD chemotherapy. We also describe, as an example, the synthesis of a potential tGPI-mucin-derived α-Gal-terminating glycan and its coupling to a carrier protein for use as diagnostic and prognostic biomarker in ChD.
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Affiliation(s)
| | - Susana Portillo
- Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA
| | - Roger A Ashmus
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, TX, USA
| | - Jerry A Duran
- Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA
| | - Nathaniel S Schocker
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, TX, USA
| | - Eva Iniguez
- Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA
| | - Alba L Montoya
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, TX, USA
| | - Brenda G Zepeda
- Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA
| | - Janet J Olivas
- Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA
| | - Nasim H Karimi
- Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA
| | - Julio Alonso-Padilla
- Barcelona Institute for Global Health (ISGlobal), Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Luis Izquierdo
- Barcelona Centre for International Health Research (ISGlobal), Barcelona, Spain
| | - Maria-Jesús Pinazo
- Barcelona Centre for International Health Research (ISGlobal), Barcelona, Spain
| | - Belkisyolé Alarcón de Noya
- Facultad de Medicina, Instituto de Medicina Tropical, Universidad Central de Venezuela, Caracas, Venezuela
| | - Oscar Noya
- Facultad de Medicina, Instituto de Medicina Tropical, Universidad Central de Venezuela, Caracas, Venezuela
| | - Rosa A Maldonado
- Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA
| | - Faustino Torrico
- Faculty of Medicine, Universidad Mayor de San Simón, Cochabamba, Bolivia
- Fundación CEADES, Cochabamba, Bolivia
| | - Joaquim Gascon
- Facultad de Medicina, Instituto de Medicina Tropical, Universidad Central de Venezuela, Caracas, Venezuela
| | - Katja Michael
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, TX, USA
| | - Igor C Almeida
- Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA.
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Brzezicka KA, Serna S, Reichardt NC. Fluorescent Neoglycoprotein Gold Nanoclusters: Synthesis and Applications in Plant Lectin Sensing and Cell Imaging. Nanoscale Res Lett 2018; 13:360. [PMID: 30421263 PMCID: PMC6232188 DOI: 10.1186/s11671-018-2772-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 10/24/2018] [Indexed: 06/09/2023]
Abstract
Carbohydrate-protein interactions mediate fundamental biological processes, such as fertilization, cell signaling, or host-pathogen communication. However, because of the enormous complexity of glycan recognition events, new tools enabling their analysis or applications emerge in recent years. Here, we describe the first preparation of neoglycoprotein functionalized fluorescent gold nanoclusters, containing a biantennary N-glycan G0 as targeting molecule, ovalbumin as carrier/model antigen, and a fluorescent gold core as imaging probe (G0-OVA-AuNCs). Subsequently, we demonstrate the utility of generated G0-OVA-AuNCs for specific sensing of plant lectins and in vitro imaging of dendritic cells.
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Affiliation(s)
- Katarzyna Alicja Brzezicka
- Glycotechnology Laboratory, CIC biomaGUNE, Paseo Miramon 182, 20014 San Sebastian, Spain
- Departments of Molecular Medicine and Microbiology and Immunology, The Scripps Research Institute, La Jolla, CA 92037 USA
| | - Sonia Serna
- Glycotechnology Laboratory, CIC biomaGUNE, Paseo Miramon 182, 20014 San Sebastian, Spain
| | - Niels Christian Reichardt
- Glycotechnology Laboratory, CIC biomaGUNE, Paseo Miramon 182, 20014 San Sebastian, Spain
- CIBER-BBN, Paseo Miramon 182, 20014 San Sebastian, Spain
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