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Fernandes AM, Martos-Maldonado MC, Araujo-Morera J, Solek C, González-Rodríguez D. Highly efficient grafting of hetero-complementary amidinium and carboxylate hydrogen-bonding/ionic pairs onto polymer surfaces. Chem Commun (Camb) 2024; 60:1571-1574. [PMID: 38230525 PMCID: PMC10846587 DOI: 10.1039/d3cc05452g] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 11/05/2023] [Accepted: 01/11/2024] [Indexed: 01/18/2024]
Abstract
We describe a grafting methodology, based on thiol-fluoroarene chemistry, to efficiently incorporate complementary hydrogen-bonding carboxylate and amidinium groups into polymer backbones. The process was optimized both in solution and on the surface of processed films, with the aim to produce materials showing hetero-complementary adhesion.
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Affiliation(s)
- Ana M Fernandes
- Nanostructured Molecular Systems and Materials Group, Departamento de Química Orgánica, Universidad Autónoma de Madrid, Madrid 28049, Spain.
| | - Manuel C Martos-Maldonado
- Nanostructured Molecular Systems and Materials Group, Departamento de Química Orgánica, Universidad Autónoma de Madrid, Madrid 28049, Spain.
| | - Javier Araujo-Morera
- Nanostructured Molecular Systems and Materials Group, Departamento de Química Orgánica, Universidad Autónoma de Madrid, Madrid 28049, Spain.
| | - Claudia Solek
- Nanostructured Molecular Systems and Materials Group, Departamento de Química Orgánica, Universidad Autónoma de Madrid, Madrid 28049, Spain.
| | - David González-Rodríguez
- Nanostructured Molecular Systems and Materials Group, Departamento de Química Orgánica, Universidad Autónoma de Madrid, Madrid 28049, Spain.
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
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2
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Martos-Maldonado MC, Quesada-Soriano I, García-Fuentes L, Vargas-Berenguel A. Multivalent Lactose-Ferrocene Conjugates Based on Poly (Amido Amine) Dendrimers and Gold Nanoparticles as Electrochemical Probes for Sensing Galectin-3. Nanomaterials (Basel) 2020; 10:nano10020203. [PMID: 31991555 PMCID: PMC7074905 DOI: 10.3390/nano10020203] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 01/16/2020] [Accepted: 01/19/2020] [Indexed: 12/17/2022]
Abstract
Galectin-3 is considered a cancer biomarker and bioindicator of fibrosis and cardiac remodeling and, therefore, it is desirable to develop convenient methods for its detection. Herein, an approach based on the development of multivalent electrochemical probes with high galectin-3 sensing abilities is reported. The probes consist of multivalent presentations of lactose–ferrocene conjugates scaffolded on poly (amido amine) (PAMAM) dendrimers and gold nanoparticles. Such multivalent lactose–ferrocene conjugates are synthesized by coupling of azidomethyl ferrocene–lactose building blocks on alkyne-functionalized PAMAM, for the case of the glycodendrimers, and to disulfide-functionalized linkers that are then used for the surface modification of citrate-stabilized gold nanoparticles. The binding and sensing abilities toward galectin-3 of both ferrocene-containing lactose dendrimers and gold nanoparticles have been evaluated by means of isothermal titration calorimetry, UV–vis spectroscopy, and differential pulse voltammetry. The highest sensitivity by electrochemical methods to galectin-3 was shown by lactosylferrocenylated gold nanoparticles, which are able to detect the lectin in nanomolar concentrations.
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3
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Romero-Pérez S, López-Martín I, Martos-Maldonado MC, Somoza Á, González-Rodríguez D. Synthesis of Phosphoramidite Monomers Equipped with Complementary Bases for Solid-Phase DNA Oligomerization. Org Lett 2020; 22:41-45. [PMID: 31860314 DOI: 10.1021/acs.orglett.9b03801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We describe the preparation of two monomers that bear complementary nucleobases at the edges (guanine-2'-deoxycytidine and 2-aminoadenine-2'-deoxyuridine) and that are conveniently protected and activated for solid-phase automated DNA synthesis. We report the optimized synthetic routes leading to the four nucleobase derivatives involved, their cross-coupling reactions into dinucleobase-containing monomers, and their oligomerization in the DNA synthesizer.
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Affiliation(s)
- Sonia Romero-Pérez
- Nanostructured Molecular Systems and Materials Group, Departamento de Química Orgánica , Universidad Autónoma de Madrid , 28049 Madrid , Spain.,NanoBiotechnology Research Group , Instituto IMDEA Nanociencia , 28049 Madrid , Spain
| | - Isabel López-Martín
- Nanostructured Molecular Systems and Materials Group, Departamento de Química Orgánica , Universidad Autónoma de Madrid , 28049 Madrid , Spain
| | - Manuel C Martos-Maldonado
- Nanostructured Molecular Systems and Materials Group, Departamento de Química Orgánica , Universidad Autónoma de Madrid , 28049 Madrid , Spain
| | - Álvaro Somoza
- NanoBiotechnology Research Group , Instituto IMDEA Nanociencia , 28049 Madrid , Spain
| | - David González-Rodríguez
- Nanostructured Molecular Systems and Materials Group, Departamento de Química Orgánica , Universidad Autónoma de Madrid , 28049 Madrid , Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem) , Universidad Autónoma de Madrid , 28049 Madrid , Spain
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4
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Martos-Maldonado MC, Hjuler CT, Sørensen KK, Thygesen MB, Rasmussen JE, Villadsen K, Midtgaard SR, Kol S, Schoffelen S, Jensen KJ. Selective N-terminal acylation of peptides and proteins with a Gly-His tag sequence. Nat Commun 2018; 9:3307. [PMID: 30120230 PMCID: PMC6098153 DOI: 10.1038/s41467-018-05695-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [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: 11/24/2017] [Accepted: 07/17/2018] [Indexed: 02/08/2023] Open
Abstract
Methods for site-selective chemistry on proteins are in high demand for the synthesis of chemically modified biopharmaceuticals, as well as for applications in chemical biology, biosensors and more. Inadvertent N-terminal gluconoylation has been reported during expression of proteins with an N-terminal His tag. Here we report the development of this side-reaction into a general method for highly selective N-terminal acylation of proteins to introduce functional groups. We identify an optimized N-terminal sequence, GHHHn- for the reaction with gluconolactone and 4-methoxyphenyl esters as acylating agents, facilitating the introduction of functionalities in a highly selective and efficient manner. Azides, biotin or a fluorophore are introduced at the N-termini of four unrelated proteins by effective and selective acylation with the 4-methoxyphenyl esters. This Gly-Hisn tag adds the unique capability for highly selective N-terminal chemical acylation of expressed proteins. We anticipate that it can find wide application in chemical biology and for biopharmaceuticals.
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Affiliation(s)
- Manuel C Martos-Maldonado
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.,Biomolecular Nanoscale Engineering Center, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Christian T Hjuler
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.,Biomolecular Nanoscale Engineering Center, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Kasper K Sørensen
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.,Biomolecular Nanoscale Engineering Center, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Mikkel B Thygesen
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.,Biomolecular Nanoscale Engineering Center, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Jakob E Rasmussen
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.,Biomolecular Nanoscale Engineering Center, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Klaus Villadsen
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.,Biomolecular Nanoscale Engineering Center, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Søren R Midtgaard
- Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen, Denmark
| | - Stefan Kol
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet Building 220, 2800, Kgs. Lyngby, Denmark
| | - Sanne Schoffelen
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark. .,Center for Evolutionary Chemical Biology, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen, Denmark.
| | - Knud J Jensen
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark. .,Biomolecular Nanoscale Engineering Center, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.
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5
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Bech EM, Martos-Maldonado MC, Wismann P, Sørensen KK, van Witteloostuijn SB, Thygesen MB, Vrang N, Jelsing J, Pedersen SL, Jensen KJ. Peptide Half-Life Extension: Divalent, Small-Molecule Albumin Interactions Direct the Systemic Properties of Glucagon-Like Peptide 1 (GLP-1) Analogues. J Med Chem 2017; 60:7434-7446. [DOI: 10.1021/acs.jmedchem.7b00787] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [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)
- Esben M. Bech
- Department
of Chemistry, University of Copenhagen, Frederiksberg 1870, Denmark
- Gubra Aps, Hørsholm 2970, Denmark
| | | | | | - Kasper K. Sørensen
- Department
of Chemistry, University of Copenhagen, Frederiksberg 1870, Denmark
| | | | - Mikkel B. Thygesen
- Department
of Chemistry, University of Copenhagen, Frederiksberg 1870, Denmark
| | | | | | | | - Knud J. Jensen
- Department
of Chemistry, University of Copenhagen, Frederiksberg 1870, Denmark
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6
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Lou C, Christensen NJ, Martos-Maldonado MC, Midtgaard SR, Ejlersen M, Thulstrup PW, Sørensen KK, Jensen KJ, Wengel J. Inside Back Cover: Folding Topology of a Short Coiled-Coil Peptide Structure Templated by an Oligonucleotide Triplex (Chem. Eur. J. 39/2017). Chemistry 2017. [DOI: 10.1002/chem.201701745] [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: 11/08/2022]
Affiliation(s)
- Chenguang Lou
- Biomolecular Nanoscale Engineering Center; Department of Physics, Chemistry and Pharmacy; University of Southern Denmark; Campusvej 55 5230 Odense M Denmark
| | - Niels Johan Christensen
- Biomolecular Nanoscale Engineering Center; Department of Chemistry; University of Copenhagen; Thorvaldsensvej 40 1871 Frederiksberg Denmark
| | - Manuel C. Martos-Maldonado
- Biomolecular Nanoscale Engineering Center; Department of Chemistry; University of Copenhagen; Thorvaldsensvej 40 1871 Frederiksberg Denmark
| | - Søren Roi Midtgaard
- Niels Bohr Institute; University of Copenhagen; Universitetsparken 5 2100 Copenhagen Ø Denmark
| | - Maria Ejlersen
- Biomolecular Nanoscale Engineering Center; Department of Physics, Chemistry and Pharmacy; University of Southern Denmark; Campusvej 55 5230 Odense M Denmark
| | - Peter W. Thulstrup
- Department of Chemistry; University of Copenhagen; Universitetsparken 5 2100 Copenhagen Ø Denmark
| | - Kasper K. Sørensen
- Biomolecular Nanoscale Engineering Center; Department of Chemistry; University of Copenhagen; Thorvaldsensvej 40 1871 Frederiksberg Denmark
| | - Knud J. Jensen
- Biomolecular Nanoscale Engineering Center; Department of Chemistry; University of Copenhagen; Thorvaldsensvej 40 1871 Frederiksberg Denmark
| | - Jesper Wengel
- Biomolecular Nanoscale Engineering Center; Department of Physics, Chemistry and Pharmacy; University of Southern Denmark; Campusvej 55 5230 Odense M Denmark
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7
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Lou C, Christensen NJ, Martos-Maldonado MC, Midtgaard SR, Ejlersen M, Thulstrup PW, Sørensen KK, Jensen KJ, Wengel J. Folding Topology of a Short Coiled-Coil Peptide Structure Templated by an Oligonucleotide Triplex. Chemistry 2017; 23:9297-9305. [PMID: 28383784 DOI: 10.1002/chem.201700971] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Indexed: 12/29/2022]
Abstract
The rational design of a well-defined protein-like tertiary structure formed by small peptide building blocks is still a formidable challenge. By using peptide-oligonucleotide conjugates (POC) as building blocks, we present the self-assembly of miniature coiled-coil α-helical peptides guided by oligonucleotide duplex and triplex formation. POC synthesis was achieved by copper-free alkyne-azide cycloaddition between three oligonucleotides and a 23-mer peptide, which by itself exhibited multiple oligomeric states in solution. The oligonucleotide domain was designed to furnish a stable parallel triplex under physiological pH, and to be capable of templating the three peptide sequences to constitute a small coiled-coil motif displaying remarkable α-helicity. The formed trimeric complex was characterized by ultraviolet thermal denaturation, gel electrophoresis, circular dichroism (CD) spectroscopy, small-angle X-ray scattering (SAXS), and molecular modeling. Stabilizing cooperativity was observed between the trimeric peptide and the oligonucleotide triplex domains, and the overall molecular size (ca. 12 nm) in solution was revealed to be independent of concentration. The topological folding of the peptide moiety differed strongly from those of the individual POC strands and the unconjugated peptide, exclusively adopting the designed triple helical structure.
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Affiliation(s)
- Chenguang Lou
- Biomolecular Nanoscale Engineering Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Niels Johan Christensen
- Biomolecular Nanoscale Engineering Center, Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Manuel C Martos-Maldonado
- Biomolecular Nanoscale Engineering Center, Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Søren Roi Midtgaard
- Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen Ø, Denmark
| | - Maria Ejlersen
- Biomolecular Nanoscale Engineering Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Peter W Thulstrup
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen Ø, Denmark
| | - Kasper K Sørensen
- Biomolecular Nanoscale Engineering Center, Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Knud J Jensen
- Biomolecular Nanoscale Engineering Center, Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Jesper Wengel
- Biomolecular Nanoscale Engineering Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
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8
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Villadsen K, Martos-Maldonado MC, Jensen KJ, Thygesen MB. Inside Cover: Chemoselective Reactions for the Synthesis of Glycoconjugates from Unprotected Carbohydrates (ChemBioChem 7/2017). Chembiochem 2017. [DOI: 10.1002/cbic.201700132] [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: 11/07/2022]
Affiliation(s)
- Klaus Villadsen
- Department of Chemistry; University of Copenhagen; Faculty of Science; Thorvaldsensvej 40 1871 Frederiksberg C Denmark
| | - Manuel C. Martos-Maldonado
- Department of Chemistry; University of Copenhagen; Faculty of Science; Thorvaldsensvej 40 1871 Frederiksberg C Denmark
| | - Knud J. Jensen
- Department of Chemistry; University of Copenhagen; Faculty of Science; Thorvaldsensvej 40 1871 Frederiksberg C Denmark
| | - Mikkel B. Thygesen
- Department of Chemistry; University of Copenhagen; Faculty of Science; Thorvaldsensvej 40 1871 Frederiksberg C Denmark
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9
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Villadsen K, Martos-Maldonado MC, Jensen KJ, Thygesen MB. Chemoselective Reactions for the Synthesis of Glycoconjugates from Unprotected Carbohydrates. Chembiochem 2017; 18:574-612. [DOI: 10.1002/cbic.201600582] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Indexed: 12/27/2022]
Affiliation(s)
- Klaus Villadsen
- Department of Chemistry; University of Copenhagen; Faculty of Science; Thorvaldsensvej 40 1871 Frederiksberg C Denmark
| | - Manuel C. Martos-Maldonado
- Department of Chemistry; University of Copenhagen; Faculty of Science; Thorvaldsensvej 40 1871 Frederiksberg C Denmark
| | - Knud J. Jensen
- Department of Chemistry; University of Copenhagen; Faculty of Science; Thorvaldsensvej 40 1871 Frederiksberg C Denmark
| | - Mikkel B. Thygesen
- Department of Chemistry; University of Copenhagen; Faculty of Science; Thorvaldsensvej 40 1871 Frederiksberg C Denmark
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10
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Lou C, Martos-Maldonado MC, Madsen CS, Thomsen RP, Midtgaard SR, Christensen NJ, Kjems J, Thulstrup PW, Wengel J, Jensen KJ. Peptide-oligonucleotide conjugates as nanoscale building blocks for assembly of an artificial three-helix protein mimic. Nat Commun 2016; 7:12294. [PMID: 27464951 PMCID: PMC4974474 DOI: 10.1038/ncomms12294] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 06/15/2016] [Indexed: 01/22/2023] Open
Abstract
Peptide-based structures can be designed to yield artificial proteins with specific folding patterns and functions. Template-based assembly of peptide units is one design option, but the use of two orthogonal self-assembly principles, oligonucleotide triple helix and a coiled coil protein domain formation have never been realized for de novo protein design. Here, we show the applicability of peptide–oligonucleotide conjugates for self-assembly of higher-ordered protein-like structures. The resulting nano-assemblies were characterized by ultraviolet-melting, gel electrophoresis, circular dichroism (CD) spectroscopy, small-angle X-ray scattering and transmission electron microscopy. These studies revealed the formation of the desired triple helix and coiled coil domains at low concentrations, while a dimer of trimers was dominating at high concentration. CD spectroscopy showed an extraordinarily high degree of α-helicity for the peptide moieties in the assemblies. The results validate the use of orthogonal self-assembly principles as a paradigm for de novo protein design. Peptide and oligonucleotide systems are known to self-assemble both in nature and artificial systems. Here, the authors combine both forms of self-assembly through the synthesis of peptideoligonucleotide conjugates and show formation of a three-helix structure that dimerises at higher concentrations.
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Affiliation(s)
- Chenguang Lou
- Department of Physics, Chemistry and Pharmacy, Biomolecular Nanoscale Engineering Center, University of Southern Denmark, Campusvej 55, Odense M 5230, Denmark
| | - Manuel C Martos-Maldonado
- Department of Chemistry, Biomolecular Nanoscale Engineering Center, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg 1871, Denmark
| | - Charlotte S Madsen
- Department of Chemistry, Biomolecular Nanoscale Engineering Center, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg 1871, Denmark
| | - Rasmus P Thomsen
- Biomolecular Nanoscale Engineering Center and Interdisciplinary Nanoscience Center (iNANO), University of Aarhus, Gustav Wieds Vej 14, Aarhus C 8000, Denmark
| | - Søren Roi Midtgaard
- Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark
| | - Niels Johan Christensen
- Department of Chemistry, Biomolecular Nanoscale Engineering Center, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg 1871, Denmark
| | - Jørgen Kjems
- Biomolecular Nanoscale Engineering Center and Interdisciplinary Nanoscience Center (iNANO), University of Aarhus, Gustav Wieds Vej 14, Aarhus C 8000, Denmark
| | - Peter W Thulstrup
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark
| | - Jesper Wengel
- Department of Physics, Chemistry and Pharmacy, Biomolecular Nanoscale Engineering Center, University of Southern Denmark, Campusvej 55, Odense M 5230, Denmark
| | - Knud J Jensen
- Department of Chemistry, Biomolecular Nanoscale Engineering Center, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg 1871, Denmark
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11
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Martos-Maldonado MC, Casas-Solvas JM, Vargas-Berenguel A, García-Fuentes L. Electrochemical detection of glutathione S-transferase: an important enzyme in the cell protective mechanism against oxidative stress. Methods Mol Biol 2015; 1208:123-138. [PMID: 25323504 DOI: 10.1007/978-1-4939-1441-8_10] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [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: 06/04/2023]
Abstract
Oxidative stress arises when the antioxidant capacity of cells to clean the excess production of reactive oxygen species (ROS) decreases. Several human diseases seem to be related with an increment in the oxidative stress. In this regard, GSH present in the cells works by neutralizing ROS and other xenobiotics through the glutathione S-transferase (GST) enzyme. Thus, the level of expression of GST is an important factor in determining the sensitivity of cells to toxic chemicals or xenobiotic compounds. Therefore, the detection of GST levels is fundamental in the clinical diagnosis of ROS-related diseases. Here, we describe a methodology, based on the voltammetric properties of the ferrocene group (used as electrochemical probe), which can be applied for selective detection of GST levels in human cells. The electrochemical signal measured is associated to the specific interaction of a ferrocenyl-GSH derivate with the G- and H-sites of this enzyme.
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Affiliation(s)
- Manuel C Martos-Maldonado
- Department of Chemistry and Physics, University of Almería, Carretera de Sacramento s/n, 04120, Almería, Spain
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12
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Aykaç A, Martos-Maldonado MC, Casas-Solvas JM, Quesada-Soriano I, García-Maroto F, García-Fuentes L, Vargas-Berenguel A. β-Cyclodextrin-bearing gold glyconanoparticles for the development of site specific drug delivery systems. Langmuir 2014; 30:234-242. [PMID: 24313322 DOI: 10.1021/la403454p] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Three novel gold nanoparticles containing multiple long, flexible linkers decorated with lactose, β-cyclodextrin, and both simultaneously have been prepared. The interaction of such nanoparticles with β-d-galactose-recognizing lectins peanut agglutinin (PNA) and human galectin-3 (Gal-3) was demonstrated by UV-vis studies. Gal-3 is well-known to be overexpressed in several human tumors and can act as a biorecognizable target. This technique also allowed us to estimate their loading capability toward the anticancer drug methotrexate (MTX). Both results make these glyconanoparticles potential site-specific delivery systems for anticancer drugs.
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Affiliation(s)
- Ahmet Aykaç
- Department of Chemistry and Physics, University of Almería , Carretera de Sacramento s/n, 04120 Almería, Spain
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Martos-Maldonado MC, Thygesen MB, Jensen KJ, Vargas-Berenguel A. Gold-Ferrocene Glyco-Nanoparticles for High-Sensitivity Electrochemical Detection of Carbohydrate-Lectin Interactions (Eur. J. Org. Chem. 14/2013). European J Org Chem 2013. [DOI: 10.1002/ejoc.201390036] [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: 11/08/2022]
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14
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Martos-Maldonado MC, Thygesen MB, Jensen KJ, Vargas-Berenguel A. Gold-Ferrocene Glyco-Nanoparticles for High-Sensitivity Electrochemical Detection of Carbohydrate-Lectin Interactions. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300205] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Martos-Maldonado MC, Casas-Solvas JM, Quesada-Soriano I, García-Fuentes L, Vargas-Berenguel A. Poly(amido amine)-based mannose-glycodendrimers as multielectron redox probes for improving lectin sensing. Langmuir 2013; 29:1318-1326. [PMID: 23286545 DOI: 10.1021/la304107a] [Citation(s) in RCA: 14] [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] [Indexed: 06/01/2023]
Abstract
An easy-to-prepare series of electroactive poly(amido amine) (PAMAM)-based dendrimers of generations G0 to G2 having mannopyranosylferrocenyl moieties in the periphery to detect carbohydrate-protein interactions is reported. The synthesis involved the functionalization of the PAMAM surface with azidomethylferrocenyl groups and subsequent coupling of mannoside units by the Cu(I)-catalyzed Huisgen reaction. The binding affinity of the series of electroactive glycodendrimers was studied by isothermal titration calorimetry (ITC) and differential pulse voltammetry (DPV). Upon complexation of the glycodendrimers conjugates with prototypical concanavalin A (Con A), voltammograms showed a decrease of the peak current. Such dendrimers showed a notable improvement of redox sensing abilities toward Con A when compared with mono- and divalent analogues, based on both the glycoside multivalent and ferrocene dendritic effects.
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Affiliation(s)
- Manuel C Martos-Maldonado
- Department of Chemistry and Physics, University of Almería, Carretera de Sacramento s/n, 04120 Almería, Spain
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16
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Martos-Maldonado MC, Quesada-Soriano I, García-Maroto F, Vargas-Berenguel A, García-Fuentes L. Ferrocene labelings as inhibitors and dual electrochemical sensors of human glutathione S-transferase P1-1. Bioorg Med Chem Lett 2012; 22:7256-60. [DOI: 10.1016/j.bmcl.2012.09.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Revised: 09/04/2012] [Accepted: 09/06/2012] [Indexed: 10/27/2022]
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17
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Martos-Maldonado MC, Quesada-Soriano I, Casas-Solvas JM, García-Fuentes L, Vargas-Berenguel A. Secondary Face-to-Face 2-2′ β-Cyclodextrin Dimers Linked with Fluorescent Rigid Spacer Arms: A Cyclodextrin-Based Ratiometric Sensor for Bile Salts. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101598] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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18
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Martos-Maldonado MC, Casas-Solvas JM, Téllez-Sanz R, Mesa-Valle C, Quesada-Soriano I, García-Maroto F, Vargas-Berenguel A, García-Fuentes L. Binding properties of ferrocene–glutathione conjugates as inhibitors and sensors for glutathione S-transferases. Biochimie 2012; 94:541-50. [DOI: 10.1016/j.biochi.2011.09.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Accepted: 09/06/2011] [Indexed: 11/28/2022]
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