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Pirone L, Lenza MP, Di Gaetano S, Capasso D, Filocaso M, Russo R, Di Carluccio C, Saviano M, Silipo A, Pedone E. Biophysical and Structural Characterization of the Interaction between Human Galectin-3 and the Lipopolysaccharide from Pseudomonas aeruginosa. Int J Mol Sci 2024; 25:2895. [PMID: 38474141 PMCID: PMC10932368 DOI: 10.3390/ijms25052895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/23/2024] [Accepted: 02/29/2024] [Indexed: 03/14/2024] Open
Abstract
Given the significant involvement of galectins in the development of numerous diseases, the aim of the following work is to further study the interaction between galectin-3 (Gal3) and the LPS from Pseudomonas aeruginosa. This manuscript focused on the study of the interaction of the carbohydrate recognition domain of Gal3 with the LPS from Pseudomonas aeruginosa by means of different complementary methodologies, such as circular dichroism; spectrofluorimetry; dynamic and static light scattering and evaluation of the impact of Gal3 on the redox potential membranes of Escherichia coli and P. aeruginosa cells, as well as ITC and NMR studies. This thorough investigation reinforces the hypothesis of an interaction between Gal3 and LPS, unraveling the structural details and providing valuable insights into the formation of these intricate molecular complexes. Taken together, these achievements could potentially prompt the design of therapeutic drugs useful for the development of agonists and/or antagonists for LPS receptors such as galectins as adjunctive therapy for P. aeruginosa.
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Affiliation(s)
- Luciano Pirone
- Institute of Biostructures and Bioimaging, National Research Council (CNR), Via P. Castellino 111, 80131 Naples, Italy; (L.P.); (S.D.G.); (M.F.); (R.R.)
| | - Maria Pia Lenza
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy; (M.P.L.); (C.D.C.)
| | - Sonia Di Gaetano
- Institute of Biostructures and Bioimaging, National Research Council (CNR), Via P. Castellino 111, 80131 Naples, Italy; (L.P.); (S.D.G.); (M.F.); (R.R.)
- Interuniversity Research Centre on Bioactive Peptides (CIRPEB), University of Naples Federico II, 80134 Naples, Italy; (D.C.); (M.S.)
| | - Domenica Capasso
- Interuniversity Research Centre on Bioactive Peptides (CIRPEB), University of Naples Federico II, 80134 Naples, Italy; (D.C.); (M.S.)
- Department of Physics “Ettore Pancini”, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy
| | - Martina Filocaso
- Institute of Biostructures and Bioimaging, National Research Council (CNR), Via P. Castellino 111, 80131 Naples, Italy; (L.P.); (S.D.G.); (M.F.); (R.R.)
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “Luigi Vanvitelli”, 81100 Caserta, Italy
- Institute of Crystallography, National Research Council (CNR), 81100 Caserta, Italy
| | - Rita Russo
- Institute of Biostructures and Bioimaging, National Research Council (CNR), Via P. Castellino 111, 80131 Naples, Italy; (L.P.); (S.D.G.); (M.F.); (R.R.)
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “Luigi Vanvitelli”, 81100 Caserta, Italy
| | - Cristina Di Carluccio
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy; (M.P.L.); (C.D.C.)
| | - Michele Saviano
- Interuniversity Research Centre on Bioactive Peptides (CIRPEB), University of Naples Federico II, 80134 Naples, Italy; (D.C.); (M.S.)
- Institute of Crystallography, National Research Council (CNR), 81100 Caserta, Italy
| | - Alba Silipo
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy; (M.P.L.); (C.D.C.)
| | - Emilia Pedone
- Institute of Biostructures and Bioimaging, National Research Council (CNR), Via P. Castellino 111, 80131 Naples, Italy; (L.P.); (S.D.G.); (M.F.); (R.R.)
- Interuniversity Research Centre on Bioactive Peptides (CIRPEB), University of Naples Federico II, 80134 Naples, Italy; (D.C.); (M.S.)
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Kapetanakis NI, Busson P. Galectins as pivotal components in oncogenesis and immune exclusion in human malignancies. Front Immunol 2023; 14:1145268. [PMID: 36817445 PMCID: PMC9935586 DOI: 10.3389/fimmu.2023.1145268] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 01/25/2023] [Indexed: 02/05/2023] Open
Abstract
Galectins are galactoside-binding proteins, exerting numerous functions inside and outside the cell, particularly conferring adaptation to stress factors. For most of them, aberrant expression profiles have been reported in the context of cancer. Albeit not being oncogenic drivers, galectins can be harnessed to exacerbate the malignant phenotype. Their impact on disease establishment and progression is not limited to making cancer cells resistant to apoptosis, but is prominent in the context of the tumor microenvironment, where it fosters angiogenesis, immune escape and exclusion. This review focuses mainly on Gal-1, Gal-3 and Gal-9 for which the involvement in cancer biology is best known. It presents the types of galectin dysregulations, attempts to explain the mechanisms behind them and analyzes the different ways in which they favor tumour growth. In an era where tumour resistance to immunotherapy appears as a major challenge, we highlight the crucial immunosuppressive roles of galectins and the potential therapeutic benefits of combinatorial approaches including galectin inhibition.
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Affiliation(s)
- Nikiforos-Ioannis Kapetanakis
- Research & Development (R&D), 4D Lifetec, Cham, Switzerland,*Correspondence: Nikiforos-Ioannis Kapetanakis, ; Pierre Busson,
| | - Pierre Busson
- Host-Tumor Interactions in Head and Neck Carcinoma: Exploration and Therapeutic Modulations, Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche(UMR) 9018 - METabolic and SYstemic aspects of oncogenesis for new therapeutic approaches (METSY), Gustave Roussy and Université Paris-Saclay, Villejuif, France,*Correspondence: Nikiforos-Ioannis Kapetanakis, ; Pierre Busson,
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