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Porciúncula-González C, Cagnoni AJ, Fontana C, Mariño KV, Saenz-Méndez P, Giacomini C, Irazoqui G. Structural insights in galectin-1-glycan recognition: Relevance of the glycosidic linkage and the N-acetylation pattern of sugar moieties. Bioorg Med Chem 2021; 44:116309. [PMID: 34293617 DOI: 10.1016/j.bmc.2021.116309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 07/06/2021] [Accepted: 07/08/2021] [Indexed: 10/20/2022]
Abstract
Galectins, soluble lectins widely expressed intra- and extracellularly in different cell types, play major roles in deciphering the cellular glycocode. Galectin-1 (Gal-1), a prototype member of this family, presents a carbohydrate recognition domain (CRD) with specific affinity for β-galactosides such as N-acetyllactosamine (β-d-Galp-(1 → 4)-d-GlcpNAc), and mediate numerous physiological and pathological processes. In this work, Gal-1 binding affinity for β-(1 → 6) galactosides, including β-d-Galp-(1 → 6)-β-d-GlcpNAc-(1 → 4)-d-GlcpNAc was evaluated, and their performance was compared to that of β-(1 → 4) and β-(1 → 3) galactosides. To this end, the trisaccharide β-d-Galp-(1 → 6)-β-d-GlcpNAc-(1 → 4)-d-GlcpNAc was enzymatically synthesized, purified and structurally characterized. To evaluate the affinity of Gal-1 for the galactosides, competitive solid phase assays (SPA) and isothermal titration calorimetry (ITC) studies were carried out. The experimental dissociation constants and binding energies obtained were compared to those calculated by molecular docking. These analyses evidenced the critical role of the glycosidic linkage between the terminal galactopyranoside residue and the adjacent monosaccharide, as galactosides bearing β-(1 → 6) glycosidic linkages showed dissociation constants six- and seven-fold higher than those involving β-(1 → 4) and β-(1 → 3) linkages, respectively. Moreover, docking experiments revealed the presence of hydrogen bond interactions between the N-acetyl group of the glucosaminopyranose moiety of the evaluated galactosides and specific amino acid residues of Gal-1, relevant for galectin-glycan affinity. Noticeably, the binding free energies (ΔGbindcalc) derived from the molecular docking were in good agreement with experimental values determined by ITC measurements (ΔGbindexp), evidencing a good correlation between theoretical and experimental approaches, which validates the in silico simulations and constitutes an important tool for the rational design of future optimized ligands.
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Affiliation(s)
- Cecilia Porciúncula-González
- Laboratorio de BioquĂmica, Departamento de Biociencias, Facultad de QuĂmica, UdelaR, Gral. Flores, 2124, 11800 Montevideo, Uruguay; Computational Chemistry and Biology Group, DETEMA, Facultad de QuĂmica, UdelaR, Isidoro de MarĂa 1614, 11800 Montevideo, Uruguay; Graduate Program in Chemistry, Facultad de QuĂmica, Universidad de la RepĂşblica, Uruguay
| | - Alejandro J Cagnoni
- Laboratorio de GlicĂłmica Funcional y Molecular, Instituto de BiologĂa y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas (CONICET), C1428ADN Buenos Aires, Argentina
| | - Carolina Fontana
- Laboratorio de EspectroscopĂa y FisicoquĂmica Orgánica, Departamento de QuĂmica del Litoral, CENUR Litoral Norte (S.R.A. Facultad de QuĂmica), UdelaR, Ruta 3 km 363, 60000 PaysandĂş, Uruguay
| | - Karina V Mariño
- Laboratorio de GlicĂłmica Funcional y Molecular, Instituto de BiologĂa y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas (CONICET), C1428ADN Buenos Aires, Argentina
| | - Patricia Saenz-MĂ©ndez
- Computational Chemistry and Biology Group, DETEMA, Facultad de QuĂmica, UdelaR, Isidoro de MarĂa 1614, 11800 Montevideo, Uruguay; Department of Engineering and Chemical Sciences, Faculty of Health, Science and Technology, Karlstad University, Universitetsgatan 2, 651 88 Karlstad, Sweden
| | - Cecilia Giacomini
- Laboratorio de BioquĂmica, Departamento de Biociencias, Facultad de QuĂmica, UdelaR, Gral. Flores, 2124, 11800 Montevideo, Uruguay
| | - Gabriela Irazoqui
- Laboratorio de BioquĂmica, Departamento de Biociencias, Facultad de QuĂmica, UdelaR, Gral. Flores, 2124, 11800 Montevideo, Uruguay.
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Porciúncula González C, Cagnoni AJ, Mariño KV, Fontana C, Saenz-Méndez P, Irazoqui G, Giacomini C. Enzymatic synthesis of non-natural trisaccharides and galactosides; Insights of their interaction with galectins as a function of their structure. Carbohydr Res 2019; 472:1-15. [DOI: 10.1016/j.carres.2018.10.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 10/26/2018] [Accepted: 10/28/2018] [Indexed: 12/11/2022]
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Immobilization of β-galactosidase and α-mannosidase onto magnetic nanoparticles: A strategy for increasing the potentiality of valuable glycomic tools for glycosylation analysis and biological role determination of glycoconjugates. Enzyme Microb Technol 2018; 117:45-55. [DOI: 10.1016/j.enzmictec.2018.05.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 04/27/2018] [Accepted: 05/21/2018] [Indexed: 01/08/2023]
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Virgen-OrtĂz JJ, Peirce S, Tacias-Pascacio VG, Cortes-Corberan V, Marzocchella A, Russo ME, Fernandez-Lafuente R. Reuse of anion exchangers as supports for enzyme immobilization: Reinforcement of the enzyme-support multiinteraction after enzyme inactivation. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.06.020] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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