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Castañeda Cataña MA, Dodes Traian MM, Rivas Marquina AP, Marquez AB, Arrúa EC, Carlucci MJ, Damonte EB, Pérez OE, Sepúlveda CS. Design and characterization of BSA-mycophenolic acid nanocomplexes: Antiviral activity exploration. Int J Biol Macromol 2024; 265:131023. [PMID: 38513897 DOI: 10.1016/j.ijbiomac.2024.131023] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 03/01/2024] [Accepted: 03/18/2024] [Indexed: 03/23/2024]
Abstract
The interactions between bovine serum albumin (BSA) and mycophenolic acid (MPA) were investigated in silico through molecular docking and in vitro, using fluorescence spectroscopy. Dynamic light scattering and scanning electron microscopy were used to figure out the structure of MPA-Complex (MPA-C). The binding affinity between MPA and BSA was determined, yielding a Kd value of (12.0 ± 0.7) μM, and establishing a distance of 17 Å between the BSA and MPA molecules. The presence of MPA prompted protein aggregation, leading to the formation of MPA-C. The cytotoxicity of MPA-C and its ability to fight Junín virus (JUNV) were tested in A549 and Vero cell lines. It was found that treating infected cells with MPA-C decreased the JUNV yield and was more effective than free MPA in both cell line models for prolonged time treatments. Our results represent the first report of the antiviral activity of this type of BSA-MPA complex against JUNV, as assessed in cell culture model systems. MPA-C shows promise as a candidate for drug formulation against human pathogenic arenaviruses.
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Affiliation(s)
- Mayra A Castañeda Cataña
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN). UBA-CONICET, 1428 Buenos Aires, Argentina
| | - Martín M Dodes Traian
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN). UBA-CONICET, 1428 Buenos Aires, Argentina
| | - Andrea P Rivas Marquina
- Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy-CIDMEJu (CONICET-Universidad Nacional de Jujuy), Centro de Desarrollo Tecnológico General Savio, 4612 Palpalá, Jujuy, Argentina
| | - Agostina B Marquez
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN). UBA-CONICET, 1428 Buenos Aires, Argentina
| | - Eva C Arrúa
- Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy-CIDMEJu (CONICET-Universidad Nacional de Jujuy), Centro de Desarrollo Tecnológico General Savio, 4612 Palpalá, Jujuy, Argentina
| | - María J Carlucci
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN). UBA-CONICET, 1428 Buenos Aires, Argentina
| | - Elsa B Damonte
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (UBA), 1428 Buenos Aires, Argentina; Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN). UBA-CONICET, 1428 Buenos Aires, Argentina
| | - Oscar E Pérez
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (UBA), 1428 Buenos Aires, Argentina; Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN). UBA-CONICET, 1428 Buenos Aires, Argentina
| | - Claudia S Sepúlveda
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (UBA), 1428 Buenos Aires, Argentina; Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN). UBA-CONICET, 1428 Buenos Aires, Argentina.
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Ciarlantini MS, Barquero A, Bayo J, Wetzler D, Dodes Traian MM, Bucci HA, Fiore EJ, Gandolfi Donadío L, Defelipe L, Turjanski A, Ramírez JA, Mazzolini G, Comin MJ. Development of an Improved Guanidine-Based Rac1 Inhibitor with in vivo Activity against Non-Small Cell Lung Cancer. ChemMedChem 2021; 16:1011-1021. [PMID: 33284505 DOI: 10.1002/cmdc.202000763] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 09/26/2020] [Revised: 11/30/2020] [Indexed: 12/20/2022]
Abstract
The Rho GTPase Rac1 is involved in the control of cytoskeleton reorganization and other fundamental cellular functions. Aberrant activity of Rac1 and its regulators is common in human cancer. In particular, deregulated expression/activity of Rac GEFs, responsible for Rac1 activation, has been associated to a metastatic phenotype and drug resistance. Thus, the development of novel Rac1-GEF interaction inhibitors is a promising strategy for finding new preclinical candidates. Here, we studied structure-activity relationships within a new family of N,N'-disubstituted guanidine as Rac1 inhibitors. We found that compound 1D-142, presents superior antiproliferative activity in human cancer cell lines and higher potency as Rac1-GEF interaction inhibitor in vitro than parental compounds. In addition, 1D-142 reduces Rac1-mediated TNFα-induced NF-κB nuclear translocation during cell proliferation and migration in NSCLC. Notably, 1D-142 allowed us to show for the first time the application of a Rac1 inhibitor in a lung cancer animal model.
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Affiliation(s)
- Matías S Ciarlantini
- Departamento de Ingredientes Activos y Biorrefinerías, Instituto Nacional de Tecnología Industrial, Av. General Paz 5445, B1650WAB, San Martin Buenos Aires, Argentina
| | - Andrea Barquero
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)- Universidad de Buenos Aires, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN)., Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina
| | - Juan Bayo
- Gene Therapy Laboratory, Instituto de Investigaciones en Medicina Traslacional, Facultad de Ciencias Biomédicas, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Austral, B1630FHB, Derqui-Pilar, Argentina
| | - Diana Wetzler
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)- Universidad de Buenos Aires, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN)., Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina
| | - Martín M Dodes Traian
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)- Universidad de Buenos Aires, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN)., Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina
| | - Hernán A Bucci
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)- Universidad de Buenos Aires, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN)., Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina
| | - Esteban J Fiore
- Gene Therapy Laboratory, Instituto de Investigaciones en Medicina Traslacional, Facultad de Ciencias Biomédicas, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Austral, B1630FHB, Derqui-Pilar, Argentina
| | - Lucía Gandolfi Donadío
- Departamento de Ingredientes Activos y Biorrefinerías, Instituto Nacional de Tecnología Industrial, Av. General Paz 5445, B1650WAB, San Martin Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. General Paz 5445, B1650WAB, San Martin, Buenos Aires, Argentina
| | - Lucas Defelipe
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)- Universidad de Buenos Aires, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN)., Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina
| | - Adrián Turjanski
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)- Universidad de Buenos Aires, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN)., Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina
| | - Javier A Ramírez
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina.,Unidad de Microanálisis y Métodos Físicos Aplicados a Química Orgánica (UMYMFOR), Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina
| | - Guillermo Mazzolini
- Gene Therapy Laboratory, Instituto de Investigaciones en Medicina Traslacional, Facultad de Ciencias Biomédicas, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Austral, B1630FHB, Derqui-Pilar, Argentina.,Liver Unit, Hospital Universitario Austral, B1629AHJ, Derqui-Pilar, Buenos Aires, Argentina
| | - Maria J Comin
- Departamento de Ingredientes Activos y Biorrefinerías, Instituto Nacional de Tecnología Industrial, Av. General Paz 5445, B1650WAB, San Martin Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. General Paz 5445, B1650WAB, San Martin, Buenos Aires, Argentina
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Abstract
A relevant question in cell biology with broad implications in biomedicine is how the organization and dynamics of interacting membranes modulate signaling cascades that involve cell-cell contact. The functionalization of surfaces with supported lipid bilayers containing tethered proteins is a particularly useful method to present ligands with membrane-like mobility to cells. Here, we present a method to generate micrometer-sized patches of lipid bilayers decorated with proteins. The method uses an economic microcontact printing technique based on one-photon lithography that can be easily implemented in a commercial laser scanning microscope. We verified that both proteins and lipids freely diffuse within the patterned bilayer, as assessed by z-scan fluorescence correlation spectroscopy and fluorescence recovery after photobleaching. These results suggest that the supported lipid bilayer patterns constitute an optimal system to explore processes involving direct interactions between cells. We also illustrate possible applications of this method by exploring the interaction of cells expressing the Fas receptor and patterns of lipid bilayers containing an agonist antibody against Fas.
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Affiliation(s)
- M Florencia Sánchez
- Instituto de Investigación Médica Mercedes y Martín Ferreyra (INIMEC), CONICET-Universidad Nacional de Córdoba , Friuli 2434, CC389, 5000 Córdoba, Argentina
| | - Martín M Dodes Traian
- Departamento de Química Biológica-IQUIBICEN Facultad de Ciencias Exactas, Universidad de Buenos Aires, Ciudad Universitaria , 1428 Buenos Aires, Argentina
| | - Valeria Levi
- Departamento de Química Biológica-IQUIBICEN Facultad de Ciencias Exactas, Universidad de Buenos Aires, Ciudad Universitaria , 1428 Buenos Aires, Argentina
| | - Dolores C Carrer
- Instituto de Investigación Médica Mercedes y Martín Ferreyra (INIMEC), CONICET-Universidad Nacional de Córdoba , Friuli 2434, CC389, 5000 Córdoba, Argentina
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Dodes Traian MM, Flecha FLG, Levi V. Imaging lipid lateral organization in membranes with C-laurdan in a confocal microscope. J Lipid Res 2012; 53:609-616. [PMID: 22184757 PMCID: PMC3276485 DOI: 10.1194/jlr.d021311] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [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: 10/11/2011] [Revised: 12/01/2011] [Indexed: 11/20/2022] Open
Abstract
Lateral organization of biological membranes is frequently studied using fluorescence microscopy. One of the most widely used probes for these studies is 2-dimethylamino-6-lauroylnaphthalene (laurdan). The fluorescence of this probe is sensitive to the environment polarity, and thus laurdan reports the local penetration of water when inserted in membranes. Unfortunately, this probe can only be used under two-photon excitation due to its low photostability. This is a very important limitation, because there are not too many laboratories with capability for two-photon microscopy. In this work, we explored the performance of 6-dodecanoyl-2-[N-methyl-N-(carboxymethyl)amino]naphthalene (C-laurdan), a carboxyl-modified version of laurdan, for imaging biological membranes using a conventional confocal microscopy setup. We acquired generalized polarization (GP) images of C-laurdan inserted in giant unillamelar vesicles composed of binary mixtures of lipids and verified that the probe allows observing the coexistence of different phases. We also tested the performance of the probe for measurement with living cells and registered GP images of melanophore cells labeled with C-laurdan in which we could observe highly ordered regions such as filopodia. These findings show that C-laurdan can be successfully employed for studies of membrane lateral organization using a conventional confocal microscope and can open the possibility of studying a wide variety of membrane-related processes.
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Affiliation(s)
- Martín M Dodes Traian
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, CP 1428 Ciudad de Buenos Aires, Argentina; Laboratorio de Biofísica Molecular, Instituto de Química y Fisicoquímica Biológicas, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - F Luis González Flecha
- Laboratorio de Biofísica Molecular, Instituto de Química y Fisicoquímica Biológicas, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Valeria Levi
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, CP 1428 Ciudad de Buenos Aires, Argentina.
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