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Guerrero I, Viñas C, Teixidor F, Romero I. Unveiling Non-Covalent Interactions in Novel Cooperative Photoredox Systems for Efficient Alkene Oxidation in Water. Molecules 2024; 29:2378. [PMID: 38792238 PMCID: PMC11123843 DOI: 10.3390/molecules29102378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 05/13/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024] Open
Abstract
A new cooperative photoredox catalytic system, [RuII(trpy)(bpy)(H2O)][3,3'-Co(8,9,12-Cl3-1,2-C2B9H8)2]2, 5, has been synthesized and fully characterized for the first time. In this system, the photoredox catalyst [3,3'-Co(8,9,12-Cl3-1,2-C2B9H8)2]-[Cl6-1]-, a metallacarborane, and the oxidation catalyst [RuII(trpy)(bpy)(H2O)]2+, 2 are linked by non-covalent interactions. This compound, along with the one previously synthesized by us, [RuII(trpy)(bpy)(H2O)][(3,3'-Co(1,2-C2B9H11)2]2, 4, are the only examples of cooperative molecular photocatalysts in which the catalyst and photosensitizer are not linked by covalent bonds. Both cooperative systems have proven to be efficient photocatalysts for the oxidation of alkenes in water through Proton Coupled Electron Transfer processes (PCETs). Using 0.05 mol% of catalyst 4, total conversion values were achieved after 15 min with moderate selectivity for the corresponding epoxides, which decreases with reaction time, along with the TON values. However, with 0.005 mol% of catalyst, the conversion values are lower, but the selectivity and TON values are higher. This occurs simultaneously with an increase in the amount of the corresponding diol for most of the substrates studied. Photocatalyst 4 acts as a photocatalyst in both the epoxidation of alkenes and their hydroxylation in aqueous medium. The hybrid system 5 shows generally higher conversion values at low loads compared to those obtained with 4 for most of the substrates studied. However, the selectivity values for the corresponding epoxides are lower even after 15 min of reaction. This is likely due to the enhanced oxidizing capacity of CoIV in catalyst 5, resulting from the presence of more electron-withdrawing substituents on the metallacarborane platform.
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Affiliation(s)
- Isabel Guerrero
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus UAB, E-08193 Bellaterra, Spain; (I.G.); (C.V.)
| | - Clara Viñas
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus UAB, E-08193 Bellaterra, Spain; (I.G.); (C.V.)
| | - Francesc Teixidor
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus UAB, E-08193 Bellaterra, Spain; (I.G.); (C.V.)
| | - Isabel Romero
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, C/M. Aurèlia Campmany, 69, E-17003 Girona, Spain
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Muñoz-Juan A, Nuez-Martínez M, Laromaine A, Viñas C. Exploring the Role of Metal in the Biointeraction of Metallacarboranes with C. elegans Embryos. Chemistry 2024; 30:e202302484. [PMID: 37870209 DOI: 10.1002/chem.202302484] [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: 07/31/2023] [Revised: 10/05/2023] [Accepted: 10/23/2023] [Indexed: 10/24/2023]
Abstract
Cobaltabis(dicarbollides), ferrabis(dicarbollide), and their halogenated derivatives are the most studied metallacarboranes with great medical potential. These versatile compounds and their iodinated derivatives can be used in chemotherapy, radiotherapy, particle therapy, and bioimaging when isotopes are used. These metallacarboranes have been evaluated in vitro and recently in vivo with complex animal models. Lately, these studies have been complemented using the invertebrate Caenorhabditis elegans (C. elegans), a nematode largely used in toxicology. When evaluated at the L4 stage, cobaltabis(dicarbollides), ([o-COSAN]- and [8,8'-I2 -o-COSAN]- ), exhibited a higher mean lethal dose (LD50 ) than ferrabis(dicarbollides) ([o-FESAN]- and [8,8'-I2 -o-FESAN]- ). In this work, we used the C. elegans embryos since they are a complex biological barrier with concentric layers of polysaccharides and proteins that protect them from the environment. We assessed if the metal atom changes their biointeraction with the C. elegans embryos. First, we assessed the effects on embryo development for metallacarboranes and their di-iodinated derivatives. We observed changes in color and in their surface structure. An exhaustive physicochemical characterization was performed to understand better this interaction, revealing a stronger interaction of ferrabis(dicarbollide) compounds with C. elegans embryos than the cobaltabis(dicarbollide) molecules. Unveiling the biological interaction of these compounds is of great interest for their future biomedical applications.
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Affiliation(s)
- Amanda Muñoz-Juan
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Spain
| | - Miquel Nuez-Martínez
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Spain
| | - Anna Laromaine
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Spain
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Spain
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Xavier JAM, Fuentes I, Nuez-Martínez M, Viñas C, Teixidor F. Single stop analysis of a protein surface using molecular probe electrochemistry. J Mater Chem B 2023; 11:8422-8432. [PMID: 37563960 DOI: 10.1039/d3tb00816a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Visualization of a protein in its native form and environment without any interference has always been a challenging task. Contrary to the assumption that protein surfaces are smooth, they are in fact highly irregular with undulating surfaces. Hence, in this study, we have tackled this ambiguous nature of the 'surface' of a protein by considering the 'effective' protein surface (EPS) with respect to its interaction with the geometrically well-defined and structurally inert anionic molecule [3,3'-Co(1,2-C2B9H11)2]-, abbreviated as [o-COSAN]-, whose stability, propensity for amine residues, and self-assembling abilities are well reported. This study demonstrates the intricacies of protein surfaces exploiting simple electrochemical measurements using a 'small molecule' redox-active probe. This technique offers the advantage of not utilizing any harsh experimental conditions that could alter the native structure of the protein and hence the protein integrity is retained. Identification of the amino acid residues which are most involved in the interactions with [3,3'-Co(1,2-C2B9H11)2]- and how a protein's environment affects these interactions can help in gaining insights into how to modify proteins to optimize their interactions particularly in the fields of drug design and biotechnology. In this research, we have demonstrated that [3,3'-Co(1,2-C2B9H11)2]- anionic small molecules are excellent candidates for studying and visualizing protein surfaces in their natural environment and allow proteins to be classified according to the surface composition, which imparts their properties. [3,3'-Co(1,2-C2B9H11)2]- 'viewed' each protein surface differently and hence has the potential to act as a simple and easy to handle cantilever for measuring and picturing protein surfaces.
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Affiliation(s)
- Jewel Ann Maria Xavier
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, Bellaterra, Spain.
| | - Isabel Fuentes
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, Bellaterra, Spain.
| | - Miquel Nuez-Martínez
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, Bellaterra, Spain.
| | - Clara Viñas
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, Bellaterra, Spain.
| | - Francesc Teixidor
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, Bellaterra, Spain.
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Hleli B, Medoš Ž, Ogrin P, Tošner Z, Kereïche S, Gradzielski M, Urbič T, Bešter-Rogač M, Matějíček P. Closo-dodecaborate-based dianionic surfactants with distorted classical morphology: Synthesis and atypical micellization in water. J Colloid Interface Sci 2023; 648:809-819. [PMID: 37327624 DOI: 10.1016/j.jcis.2023.06.013] [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: 02/25/2023] [Revised: 05/18/2023] [Accepted: 06/04/2023] [Indexed: 06/18/2023]
Abstract
HYPOTHESIS To challenge the classical concept of step-like micellization of ionic surfactants with singular critical micelle concentration, novel amphiphilic compounds with bulky dianionic head and the alkoxy tail connected via short linker, which can complex sodium cations, were synthesized in the form of disodium salts. EXPERIMENT The surfactants were synthesized by opening of a dioxanate ring attached to closo-dodecaborate by activated alcohol, which allows for attachment of alkyloxy tails of desired length to boron cluster dianion. The synthesis of the compounds with high cationic purity (sodium salt) is described. Self-assembly of the surfactant compound at air/water interface and in bulk water was studied by tensiometry, light and small angle X-ray scattering, electron microscopy, NMR spectroscopy, MD simulations and by isothermal titration calorimetry, ITC. The peculiarities in the micelle structure and formation were revealed by thermodynamic modelling and MD simulations of the micellization process. FINDINGS In an atypical process, the surfactants self-assemble in water to form relatively small micelles, where the aggregation number is decreasing with the surfactant concentration. The extensive counterion binding is a key characteristic of the micelles. The analysis strongly indicates complex compensation between the degree of bound sodium ions and the aggregation number. For the first time, a three-step thermodynamic model was used to estimate the thermodynamic parameters associated with micellization process. Diverse micelles differing in size and counterion binding can (co-)exist in the solution over the broad concentration and temperature range. Thus, the concept of step-like micellization was found inappropriate for these types of micelles.
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Affiliation(s)
- Belhssen Hleli
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 40 Prague 2, Czech Republic
| | - Žiga Medoš
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Peter Ogrin
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Zdeněk Tošner
- NMR Laboratory, Faculty of Science, Charles University, Hlavova 2030/8, 128 40 Prague 2, Czech Republic
| | - Sami Kereïche
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University, 128 000 Prague 2, Czech Republic
| | - Michael Gradzielski
- Stranski-Laboratorium für Physikalische Chemie und Theoretische Chemie, Institut für Chemie Sekr. TC 7, Technische Universität Berlin, Strasse des 17. Juni 124, D-10623 Berlin, Germany
| | - Tomaž Urbič
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Marija Bešter-Rogač
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia.
| | - Pavel Matějíček
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 40 Prague 2, Czech Republic.
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Supramolecular chemistry of anionic boron clusters and its applications in biology. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kubiński K, Masłyk M, Janeczko M, Goldeman W, Nasulewicz-Goldeman A, Psurski M, Martyna A, Boguszewska-Czubara A, Cebula J, Goszczyński TM. Metallacarborane Derivatives as Innovative Anti- Candida albicans Agents. J Med Chem 2022; 65:13935-13945. [PMID: 36217958 DOI: 10.1021/acs.jmedchem.2c01167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Infections caused by Candida species have increased significantly in the past decades and are among the leading causes of morbidity and mortality worldwide, resulting in serious public health problems. Currently, conventional antifungals are often ineffective as Candida spp. have developed growing resistance to systemic drugs. Since inorganic metallacarboranes are known to affect cellular events, new derivatives of these abiotic compounds were tested against Candida albicans. Compounds based on cobalt bis-dicarbollide [COSAN] were studied on Candida albicans strains, including a panel of 100 clinical isolates. The presented data prove that metallacarborane derivatives are effective against clinical isolates of Candida albicans, even those resistant to systemic drugs, and show synergistic potential in combination with amphotericin B, and low toxicity against human cells and Danio rerio embryos. This paper is a consequential step in the investigations of the broad spectrum and valuable future medical applications of metallacarboranes, especially in the fight against drug-resistant pathogens.
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Affiliation(s)
- Konrad Kubiński
- Department of Molecular Biology, The John Paul II Catholic University of Lublin, Konstantynów 1i, 20-708 Lublin, Poland
| | - Maciej Masłyk
- Department of Molecular Biology, The John Paul II Catholic University of Lublin, Konstantynów 1i, 20-708 Lublin, Poland
| | - Monika Janeczko
- Department of Molecular Biology, The John Paul II Catholic University of Lublin, Konstantynów 1i, 20-708 Lublin, Poland
| | - Waldemar Goldeman
- Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wrocław, Poland
| | - Anna Nasulewicz-Goldeman
- Laboratory of Experimental Anticancer Therapy, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland
| | - Mateusz Psurski
- Laboratory of Experimental Anticancer Therapy, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland
| | - Aleksandra Martyna
- Department of Molecular Biology, The John Paul II Catholic University of Lublin, Konstantynów 1i, 20-708 Lublin, Poland
| | - Anna Boguszewska-Czubara
- Department of Medical Chemistry, Medical University of Lublin, Chodźki 4A Street, 20-093 Lublin, Poland
| | - Jakub Cebula
- Laboratory of Biomedical Chemistry, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland
| | - Tomasz M Goszczyński
- Laboratory of Biomedical Chemistry, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland
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Xavier JAM, GARCIA TANIA, Vinas C, Lorenzo E, Teixidor F. Potential application of metallacarboranes as internal reference: An electrochemical comparative study to ferrocene. Chem Commun (Camb) 2022; 58:4196-4199. [DOI: 10.1039/d2cc00424k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ferrocene and its derivatives have been extensively used as internal reference in electrochemical processes. Yet, they possess limitations such as solvent restrictions that require chemical modifications. In this regard, we...
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Teixidor F, Viñas C, Planas JG, Romero I, Núñez R. Advances in the catalytic and photocatalytic behavior of carborane derived metal complexes. ADVANCES IN CATALYSIS 2022. [DOI: 10.1016/bs.acat.2022.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nuez-Martinez M, Pinto CIG, Guerreiro JF, Mendes F, Marques F, Muñoz-Juan A, Xavier JAM, Laromaine A, Bitonto V, Protti N, Crich SG, Teixidor F, Viñas C. Cobaltabis(dicarbollide) ([ o-COSAN] -) as Multifunctional Chemotherapeutics: A Prospective Application in Boron Neutron Capture Therapy (BNCT) for Glioblastoma. Cancers (Basel) 2021; 13:6367. [PMID: 34944987 PMCID: PMC8699431 DOI: 10.3390/cancers13246367] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/10/2021] [Accepted: 12/16/2021] [Indexed: 12/12/2022] Open
Abstract
PURPOSE The aim of our study was to assess if the sodium salt of cobaltabis(dicarbollide) and its di-iodinated derivative (Na[o-COSAN] and Na[8,8'-I2-o-COSAN]) could be promising agents for dual anti-cancer treatment (chemotherapy + BNCT) for GBM. METHODS The biological activities of the small molecules were evaluated in vitro with glioblastoma cells lines U87 and T98G in 2D and 3D cell models and in vivo in the small model animal Caenorhabditis elegans (C. elegans) at the L4-stage and using the eggs. RESULTS Our studies indicated that only spheroids from the U87 cell line have impaired growth after treatment with both compounds, suggesting an increased resistance from T98G spheroids, contrary to what was observed in the monolayer culture, which highlights the need to employ 3D models for future GBM studies. In vitro tests in U87 and T98G cells conclude that the amount of 10B inside the cells is enough for BNCT irradiation. BNCT becomes more effective on T98G after their incubation with Na[8,8'-I2-o-COSAN], whereas no apparent cell-killing effect was observed for untreated cells. CONCLUSIONS These small molecules, particularly [8,8'-I2-o-COSAN]-, are serious candidates for BNCT now that the facilities of accelerator-based neutron sources are more accessible, providing an alternative treatment for resistant glioblastoma.
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Affiliation(s)
- Miquel Nuez-Martinez
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Catarina I. G. Pinto
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (C.I.G.P.); (J.F.G.); (F.M.); (F.M.)
| | - Joana F. Guerreiro
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (C.I.G.P.); (J.F.G.); (F.M.); (F.M.)
| | - Filipa Mendes
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (C.I.G.P.); (J.F.G.); (F.M.); (F.M.)
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (C.I.G.P.); (J.F.G.); (F.M.); (F.M.)
| | - Amanda Muñoz-Juan
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Jewel Ann Maria Xavier
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Anna Laromaine
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Valeria Bitonto
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (V.B.); (S.G.C.)
| | | | - Simonetta Geninatti Crich
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (V.B.); (S.G.C.)
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
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Nuez-Martínez M, Pedrosa L, Martinez-Rovira I, Yousef I, Diao D, Teixidor F, Stanzani E, Martínez-Soler F, Tortosa A, Sierra À, Gonzalez JJ, Viñas C. Synchrotron-Based Fourier-Transform Infrared Micro-Spectroscopy (SR-FTIRM) Fingerprint of the Small Anionic Molecule Cobaltabis(dicarbollide) Uptake in Glioma Stem Cells. Int J Mol Sci 2021; 22:9937. [PMID: 34576098 PMCID: PMC8466526 DOI: 10.3390/ijms22189937] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/07/2021] [Accepted: 09/10/2021] [Indexed: 12/16/2022] Open
Abstract
The anionic cobaltabis (dicarbollide) [3,3'-Co(1,2-C2B9H11)2]-, [o-COSAN]-, is the most studied icosahedral metallacarborane. The sodium salts of [o-COSAN]- could be an ideal candidate for the anti-cancer treatment Boron Neutron Capture Therapy (BNCT) as it possesses the ability to readily cross biological membranes thereby producing cell cycle arrest in cancer cells. BNCT is a cancer therapy based on the potential of 10B atoms to produce α particles that cross tissues in which the 10B is accumulated without damaging the surrounding healthy tissues, after being irradiated with low energy thermal neutrons. Since Na[o-COSAN] displays a strong and characteristic ν(B-H) frequency in the infrared range 2.600-2.500 cm-1, we studied the uptake of Na[o-COSAN] followed by its interaction with biomolecules and its cellular biodistribution in two different glioma initiating cells (GICs), mesenchymal and proneural respectively, by using Synchrotron Radiation-Fourier Transform Infrared (FTIR) micro-spectroscopy (SR-FTIRM) facilities at the MIRAS Beamline of ALBA synchrotron light source. The spectroscopic data analysis from the bands in the regions of DNA, proteins, and lipids permitted to suggest that after its cellular uptake, Na[o-COSAN] strongly interacts with DNA strings, modifies proteins secondary structure and also leads to lipid saturation. The mapping suggests the nuclear localization of [o-COSAN]-, which according to reported Monte Carlo simulations may result in a more efficient cell-killing effect compared to that in a uniform distribution within the entire cell. In conclusion, we show pieces of evidence that at low doses, [o-COSAN]- translocates GIC cells' membranes and it alters the physiology of the cells, suggesting that Na[o-COSAN] is a promising agent to BNCT for glioblastoma cells.
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Affiliation(s)
- Miquel Nuez-Martínez
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain; (M.N.-M.); (F.T.)
| | - Leire Pedrosa
- Laboratory of Experimental Oncological Neurosurgery, Neurosurgery Service, Hospital Clinic de Barcelona—FCRB, 08036 Barcelona, Spain; (L.P.); (D.D.); (J.J.G.)
| | - Immaculada Martinez-Rovira
- Ionizing Radiation Research Group (GRRI), Physics Department, Universitat Autònoma de Barcelona (UAB), Avinguda de l’Eix Central, Edifici C. Campus de la UAB, 08193 Cerdanyola del Vallès, Spain;
- ALBA-CELLS Synchrotron, MIRAS Beamline, Carrer de la Llum 2-26, 08290 Cerdanyola del Vallès, Spain;
| | - Ibraheem Yousef
- ALBA-CELLS Synchrotron, MIRAS Beamline, Carrer de la Llum 2-26, 08290 Cerdanyola del Vallès, Spain;
| | - Diouldé Diao
- Laboratory of Experimental Oncological Neurosurgery, Neurosurgery Service, Hospital Clinic de Barcelona—FCRB, 08036 Barcelona, Spain; (L.P.); (D.D.); (J.J.G.)
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain; (M.N.-M.); (F.T.)
| | - Elisabetta Stanzani
- Laboratory of Pharmacology and Brain Pathology, IRCCS Humanitas Research Hospital, 20089 Rozzano, Italy;
| | - Fina Martínez-Soler
- Apoptosis and Cancer Unit, Department of Physiological Sciences, IDIBELL, Faculty of Medicine and Health Sciences, Universitat de Barcelona, 08907 L’Hospitalet del Llobregat, Spain; (F.M.-S.); (A.T.)
| | - Avelina Tortosa
- Apoptosis and Cancer Unit, Department of Physiological Sciences, IDIBELL, Faculty of Medicine and Health Sciences, Universitat de Barcelona, 08907 L’Hospitalet del Llobregat, Spain; (F.M.-S.); (A.T.)
| | - Àngels Sierra
- Laboratory of Experimental Oncological Neurosurgery, Neurosurgery Service, Hospital Clinic de Barcelona—FCRB, 08036 Barcelona, Spain; (L.P.); (D.D.); (J.J.G.)
| | - José Juan Gonzalez
- Laboratory of Experimental Oncological Neurosurgery, Neurosurgery Service, Hospital Clinic de Barcelona—FCRB, 08036 Barcelona, Spain; (L.P.); (D.D.); (J.J.G.)
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain; (M.N.-M.); (F.T.)
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Far‐Red and Near‐Infrared Boron Schiff Bases (BOSCHIBAs) Dyes Bearing Anionic Boron Clusters. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100144] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Abstract
"There's plenty of room at the bottom" (Richard Feynman, 1959): an invitation for (metalla)carboranes to enter the (new) field of nanomedicine. For two decades, the number of publications on boron cluster compounds designed for potential applications in medicine has been constantly increasing. Hundreds of compounds have been screened in vitro or in vivo for a variety of biological activities (chemotherapeutics, radiotherapeutics, antiviral, etc.), and some have shown rather promising potential for further development. However, until now, no boron cluster compounds have made it to the clinic, and even clinical trials have been very sparse. This review introduces a new perspective in the field of medicinal boron chemistry, namely that boron-based drugs should be regarded as nanomedicine platforms, due to their peculiar self-assembly behaviour in aqueous solutions, and treated as such. Examples for boron-based 12- and 11-vertex clusters and appropriate comparative studies from medicinal (in)organic chemistry and nanomedicine, highlighting similarities, differences and gaps in physicochemical and biological characterisation methods, are provided to encourage medicinal boron chemists to fill in the gaps between chemistry laboratory and real applications in living systems by employing bioanalytical and biophysical methods for characterising and controlling the aggregation behaviour of the clusters in solution.
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Affiliation(s)
- Marta Gozzi
- Institute of Inorganic ChemistryFaculty of Chemistry and MineralogyLeipzig UniversityJohannisallee 2904103LeipzigGermany
- Institute of Analytical ChemistryFaculty of Chemistry and MineralogyLeipzig UniversityLinnéstr. 304103LeipzigGermany
- Institute of Medicinal Physics and BiophysicsFaculty of MedicineLeipzig UniversityHärtelstr. 16–1804107LeipzigGermany
| | - Benedikt Schwarze
- Institute of Medicinal Physics and BiophysicsFaculty of MedicineLeipzig UniversityHärtelstr. 16–1804107LeipzigGermany
| | - Evamarie Hey‐Hawkins
- Institute of Inorganic ChemistryFaculty of Chemistry and MineralogyLeipzig UniversityJohannisallee 2904103LeipzigGermany
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Parejo L, Chaari M, Santiago S, Guirado G, Teixidor F, Núñez R, Hernando J. Reversibly Switchable Fluorescent Molecular Systems Based on Metallacarborane-Perylenediimide Conjugates. Chemistry 2021; 27:270-280. [PMID: 32648595 DOI: 10.1002/chem.202002419] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Indexed: 12/31/2022]
Abstract
Icosahedral metallacarboranes are θ-shaped anionic molecules in which two icosahedra share one vertex that is a metal center. The most remarkable of these compounds is the anionic cobalt-based metallacarborane [Co(C2 B9 H11 )2 ]- , whose oxidation-reduction processes occur via an outer sphere electron process. This, along with its low density negative charge, makes [Co(C2 B9 H11 )2 ]- very appealing to participate in electron-transfer processes. In this work, [Co(C2 B9 H11 )2 ]- is tethered to a perylenediimide dye to produce the first examples of switchable luminescent molecules and materials based on metallacarboranes. In particular, the electronic communication of [Co(C2 B9 H11 )2 ]- with the appended chromophore unit in these compounds can be regulated upon application of redox stimuli, which allows the reversible modulation of the emitted fluorescence. As such, they behave as electrochemically-controlled fluorescent molecular switches in solution, which surpass the performance of previous systems based on conjugates of perylendiimides with ferrocene. Remarkably, they can form gels by treatment with appropriate mixtures of organic solvents, which result from the self-assembly of the cobaltabisdicarbollide-perylendiimide conjugates into 1D nanostructures. The interplay between dye π-stacking and metallacarborane electronic and steric interactions ultimately governs the supramolecular arrangement in these materials, which for one of the compounds prepared allows preserving the luminescent behavior in the gel state.
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Affiliation(s)
- Laura Parejo
- Departament de Química, Universitat Autònoma de Barcelona, 08193, Barcelona, Spain
| | - Mahdi Chaari
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193, Barcelona, Spain
| | - Sara Santiago
- Departament de Química, Universitat Autònoma de Barcelona, 08193, Barcelona, Spain
| | - Gonzalo Guirado
- Departament de Química, Universitat Autònoma de Barcelona, 08193, Barcelona, Spain
| | - Francesc Teixidor
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193, Barcelona, Spain
| | - Rosario Núñez
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193, Barcelona, Spain
| | - Jordi Hernando
- Departament de Química, Universitat Autònoma de Barcelona, 08193, Barcelona, Spain
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15
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Fink K, Goszczyński TM. Solid-State, Thermal Synthesis of Peptide/Protein-Boron Cluster Conjugates. Methods Mol Biol 2021; 2355:93-104. [PMID: 34386953 DOI: 10.1007/978-1-0716-1617-8_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Anionic boron clusters can be used to increase the pharmaceutical properties of the peptides. Here, we describe the method of synthesis of peptide/protein-boron cluster conjugates using solid-state, thermal reaction on two different peptides: thymosin β4 (Tβ4) and lysozyme. 1,4-dioxane oxonium derivatives of anionic boron clusters are used as donors of boron clusters. This procedure allows to conjugate anionic boron clusters to native peptides without loss of the activity of the peptides.
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Affiliation(s)
- Krzysztof Fink
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Tomasz M Goszczyński
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland.
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Guerrero I, Saha A, Xavier JAM, Viñas C, Romero I, Teixidor F. Noncovalently Linked Metallacarboranes on Functionalized Magnetic Nanoparticles as Highly Efficient, Robust, and Reusable Photocatalysts in Aqueous Medium. ACS APPLIED MATERIALS & INTERFACES 2020; 12:56372-56384. [PMID: 33284598 DOI: 10.1021/acsami.0c17847] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A successful homogeneous photoredox catalyst has been fruitfully heterogenized on magnetic nanoparticles (MNPs) coated with a silica layer, keeping intact its homogeneous catalytic properties but gaining others due to the easy magnetic separation and recyclability. The amine-terminated magnetic silica nanoparticles linked noncovalently to H[3,3'-Co(1,2-C2B9H11)2]- (H[1]), termed MSNPs-NH2@H[1], are highly stable and do not produce any leakage of the photoredox catalyst H[1] in water. The magnetite MNPs were coated with SiO2 to provide colloidal stability and silanol groups to be tethered to amine-containing units. These were the MSNPs-NH2 on which was anchored, in water, the cobaltabis(dicarbollide) complex H[1] to obtain MSNPs-NH2@H[1]. Both MSNPs-NH2 and MSNPs-NH2@H[1] were evaluated to study the morphology, characterization, and colloidal stability of the MNPs produced. The heterogeneous MSNP-NH2@H[1] system was studied for the photooxidation of alcohols, such as 1-phenylethanol, 1-hexanol, 1,6-hexanediol, or cyclohexanol among others, using catalyst loads of 0.1 and 0.01 mol %. Surfactants were introduced to prevent the aggregation of MNPs, and cetyl trimethyl ammonium chloride was chosen as a surfactant. This provided adequate stability, without hampering quick magnetic separation. The results proved that the catalysis could be speeded up if aggregation was prevented. The recyclability of the catalytic system was demonstrated by performing 12 runs of the MSNPs-NH2@H[1] system, each one without loss of selectivity and yield. The cobaltabis(dicarbollide) catalyst supported on silica-coated magnetite nanoparticles has proven to be a robust, efficient, and easily reusable system for the photooxidation of alcohols in water, resulting in a green and sustainable heterogeneous catalytic system.
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Affiliation(s)
- Isabel Guerrero
- Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, Campus UAB, E-08193 Bellaterra, Spain
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, C/M. Aurèlia Campmany, 69, E-17003 Girona, Spain
| | - Arpita Saha
- Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, Campus UAB, E-08193 Bellaterra, Spain
| | - Jewel Ann Maria Xavier
- Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, Campus UAB, E-08193 Bellaterra, Spain
| | - Clara Viñas
- Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, Campus UAB, E-08193 Bellaterra, Spain
| | - Isabel Romero
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, C/M. Aurèlia Campmany, 69, E-17003 Girona, Spain
| | - Francesc Teixidor
- Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, Campus UAB, E-08193 Bellaterra, Spain
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17
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Merhi T, Jonchère A, Girard L, Diat O, Nuez M, Viñas C, Bauduin P. Highlights on the Binding of Cobalta-Bis-(Dicarbollide) with Glucose Units. Chemistry 2020; 26:13935-13947. [PMID: 32628301 DOI: 10.1002/chem.202002123] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/18/2020] [Indexed: 12/13/2022]
Abstract
Metalla-bis-dicarbollides, such as the cobalta-bis-dicarbollide (COSAN) anion [Co(C2 B9 H11 )2 ]- , have attracted much attention in biology but a deep understanding of their interactions with cell components is still missing. For this purpose, we studied the interactions of COSAN with the glucose moiety, which is ubiquitous at biological interfaces. Octyl-glucopyranoside surfactant (C8G1) was chosen as a model as it self-assembles in water and creates a hydrated glucose-covered interface. At low COSAN content and below the critical micellar concentration (CMC) of C8G1, COSAN binds to C8G1 monomers through the hydrophobic effect. Above the CMC of C8G1, COSAN adsorbs onto C8G1 micelles through the superchaotropic effect. At high COSAN concentrations, COSAN disrupts C8G1 micelles and the assemblies become similar to COSAN micelles but with a small amount of solubilized C8G1. Therefore, COSAN binds in a versatile way to C8G1 through either the hydrophobic or superchaotropic effect depending on their relative concentrations.
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Affiliation(s)
- Tania Merhi
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, 30207, Marcoule, France
| | - Alban Jonchère
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, 30207, Marcoule, France
| | - Luc Girard
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, 30207, Marcoule, France
| | - Olivier Diat
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, 30207, Marcoule, France
| | - Miquel Nuez
- Institute de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Barcelona, Spain
| | - Clara Viñas
- Institute de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Barcelona, Spain
| | - Pierre Bauduin
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, 30207, Marcoule, France
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18
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Brus J, Czernek J, Urbanova M, Rohlíček J, Plecháček T. Transferring Lithium Ions in the Nanochannels of Flexible Metal-Organic Frameworks Featuring Superchaotropic Metallacarborane Guests: Mechanism of Ionic Conductivity at Atomic Resolution. ACS APPLIED MATERIALS & INTERFACES 2020; 12:47447-47456. [PMID: 32975402 DOI: 10.1021/acsami.0c12293] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Metal-organic frameworks (MOFs), owing to their unique architecture, attract consistent attention in the design of high-performance Li battery materials. Here, we report a new category of ion-conducting crystalline materials for all-solid-state electrolytes based on an MIL53(Al) framework featuring a superchaotropic metallacarborane (Li+CoD-) salt and present the first quantitative data on Li+ ion sites, local dynamics, chemical exchange, and the formation of charge-transfer pathways. We used multinuclear solid-state nuclear magnetic resonance (ss-NMR) spectroscopy to examine the mechanism of ionic conductivity at atomic resolution and to elucidate order-disorder processes, framework-ion interactions, and framework breathing during the loading of Li+CoD- species and transfer of Li+ ions. In this way, the MIL53(Al)@LiCoD framework was found to adopt an open-pore conformation accompanied by a minor fraction of narrow-pore channels. The inserted Li+ ions have two states (free and bound), which both exhibit extensive motions. Both types of Li+ ions form mutually communicating chains, which are large enough to enable efficient long-range charge transfer and macroscopic conductivity. The superchaotropic anions undergo high-amplitude uniaxial rotation motions supporting the transfer of Li+ cations along them, while the fluctuations of MOF aromatic linkers support the penetration of Li+ through the channel walls. Our findings provide a detailed atomic-resolution insight into the mechanism of ionic conductivity and thus have significant implications for the design of the next generation of energy-related materials.
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Affiliation(s)
- Jiri Brus
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovsky sq. 2, 162 06 Prague 6 Czech Republic
| | - Jiri Czernek
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovsky sq. 2, 162 06 Prague 6 Czech Republic
| | - Martina Urbanova
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovsky sq. 2, 162 06 Prague 6 Czech Republic
| | - Jan Rohlíček
- Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, Prague 8 182 21, Czech Republic
| | - Tomáš Plecháček
- Faculty of Chemical Technology, Joint Laboratory of Solid-State Chemistry, University of Pardubice, Studentska 84, 532 10 Pardubice, Czech Republic
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19
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Chen J, Luo J, Bekele S, Tsige M, Liu T. Rational Control of Self-Recognition of Macroionic γ-Cyclodextrin by Host-Guest Interaction with Super-Chaotropic Borate Cluster Ions. Chempluschem 2020; 85:2316-2319. [PMID: 33058510 DOI: 10.1002/cplu.202000536] [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: 07/17/2020] [Revised: 09/26/2020] [Indexed: 11/11/2022]
Abstract
We report a feasible method to control self-recognition during the self-assembly of a hydrophilic macroion, phosphate-functionalized γ-cyclodextrin (γ-CD-P), though host-guest interactions. We confirmed that γ-CD-P can form a host-guest complex with a super-chaotropic anion, namely the B12 F12 2- borate cluster, by using NMR spectroscopy and isothermal titration calorimetry. The loaded γ-CD-P, which has a higher charge density, can be distinguished from the uncomplexed γ-CD-P, leading to self-sorting behavior during the self-assembly process, confirmed by the formation of two types of individual supramolecular structures (Rh of ca. 57 nm and 18 nm, determined by light scattering) instead of hybrid structures in mixed dilute solution. This self-recognition behavior is accounted for by the difference in intermolecular electrostatic interactions arising from the loading.
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Affiliation(s)
- Jiahui Chen
- School of Polymer Science and Engineering, The University of Akron, 44325, Akron, OH, USA
| | - Jiancheng Luo
- School of Polymer Science and Engineering, The University of Akron, 44325, Akron, OH, USA
| | - Selemon Bekele
- School of Polymer Science and Engineering, The University of Akron, 44325, Akron, OH, USA
| | - Mesfin Tsige
- School of Polymer Science and Engineering, The University of Akron, 44325, Akron, OH, USA
| | - Tianbo Liu
- School of Polymer Science and Engineering, The University of Akron, 44325, Akron, OH, USA
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20
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Bregadze VI, Sivaev IB, Dubey RD, Semioshkin A, Shmal'ko AV, Kosenko ID, Lebedeva KV, Mandal S, Sreejyothi P, Sarkar A, Shen Z, Wu A, Hosmane NS. Boron-Containing Lipids and Liposomes: New Conjugates of Cholesterol with Polyhedral Boron Hydrides. Chemistry 2020; 26:13832-13841. [PMID: 32521076 DOI: 10.1002/chem.201905083] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Indexed: 12/16/2022]
Abstract
A series of boron-containing lipids were prepared by reactions of cyclic oxonium derivatives of polyhedron boranes and metallacarboranes (closo-dodecaborate anion, cobalt and iron bis(dicarbollides)) with amine and carboxylic acids which are derived from cholesterol. Stable liposomal formulations, on the basis of synthesized boron-containing lipids, hydrogenated soybean l-α-phosphatidylcholine and (HSPC) 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[methoxy(polyethylene glycol)-2000] (DSPE-PEG) as excipients, were prepared and then characterized by dynamic light scattering (DLS) that revealed the formation of particles to be smaller than 200 nm in diameter. The resulting liposomal formulations showed moderate to excellent loading and entrapment efficiency, thus justifying the design of the compounds to fit in the lipid bilayer and ensuring ease of in vivo use for future application. The liposomal formulations based on cobalt and iron bis(dicarbollide)-based lipids were found to be nontoxic against both human breast normal epithelial cells MCF-10A and human breast cancer cells MCF-7.
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Affiliation(s)
- Vladimir I Bregadze
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 119991, Moscow, Russia
| | - Igor B Sivaev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 119991, Moscow, Russia
| | - Ravindra Dhar Dubey
- India Innovation Research Center, 465 Patparganj Industrial Area, Delhi, 110092, India
| | - Andrey Semioshkin
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 119991, Moscow, Russia
| | - Akim V Shmal'ko
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 119991, Moscow, Russia
| | - Irina D Kosenko
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 119991, Moscow, Russia
| | - Kseniya V Lebedeva
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 119991, Moscow, Russia
| | - Swadhin Mandal
- Indian Institute of Science Education and Research, Mohanpur, 741246, India
| | | | - Arindam Sarkar
- India Innovation Research Center, 465 Patparganj Industrial Area, Delhi, 110092, India
| | - Zheyu Shen
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Aiguo Wu
- Cixi Institute of Biomedical Engineering, CAS Key Laboratory of, Magnetic Materials and Devices, Ningbo Institute of Materials Technology, and Engineering, Chinese Academy of Sciences, 1219 Zhong-guan West Road, Ning-bo, Zhe-jiang, 315201, P. R. China
| | - Narayan S Hosmane
- Department of Chemistry & Biochemistry, Northern Illinois University, DeKalb, IL 60115, USA
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21
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Romero I, Martinez-Medina M, Camprubí-Font C, Bennour I, Moreno D, Martínez-Martínez L, Teixidor F, Fox MA, Viñas C. Metallacarborane Assemblies as Effective Antimicrobial Agents, Including a Highly Potent Anti-MRSA Agent. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00315] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Isabel Romero
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, C/M. Aurèlia Campmany, 69, E-17003 Girona, Spain
| | - Margarita Martinez-Medina
- Microbiology of the Intestinal Disease group, Department of Biology, Universitat de Girona, 17003 Girona, Spain
| | - Carla Camprubí-Font
- Microbiology of the Intestinal Disease group, Department of Biology, Universitat de Girona, 17003 Girona, Spain
| | - Ines Bennour
- Institut de Ciència de Materials de Barcelona, Consejo Superior de Investigaciones Científicas, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - David Moreno
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, C/M. Aurèlia Campmany, 69, E-17003 Girona, Spain
| | - Luis Martínez-Martínez
- Unidad de Gestión Clínica de Microbiología, Hospital Universitario Reina Sofía, IMIBIC, Universidad de Cordoba, Cordoba, Spain
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona, Consejo Superior de Investigaciones Científicas, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Mark A. Fox
- Chemistry Department, Durham University, South Road, Durham DH1 3LE, U.K
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona, Consejo Superior de Investigaciones Científicas, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
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22
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Navascuez M, Dupin D, Grande HJ, Gómez-Vallejo V, Loinaz I, Cossío U, Llop J. COSAN-stabilised omega-3 oil-in-water nanoemulsions to prolong lung residence time for poorly water soluble drugs. Chem Commun (Camb) 2020; 56:8972-8975. [PMID: 32638718 DOI: 10.1039/d0cc00918k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Herein, we report on the capacity of the amphiphilic inorganic anion cobalt bis(dicarbollide) to stabilise oil-in-water nanoemulsions (NEs). The resulting NEs show long term stability in water and high drug-loading capacity, and can prolong the residence time of hydrophobic drugs in the lungs as determined by in vivo positron emission tomography imaging.
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Affiliation(s)
- Marcos Navascuez
- CIDETEC, Basque Research and Technology Alliance (BRTA), Parque Científico y Tecnológico de Gipuzkoa, Donostia-San Sebastián 20014, Spain.
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Fojt L, Grüner B, Šícha V, Nekvinda J, Vespalec R, Fojta M. Electrochemistry of icosahedral cobalt bis(dicarbollide) ions and their carbon and boron substituted derivatives in aqueous phosphate buffers. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136112] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Guerrero I, Kelemen Z, Viñas C, Romero I, Teixidor F. Metallacarboranes as Photoredox Catalysts in Water. Chemistry 2020; 26:5027-5036. [PMID: 31999000 DOI: 10.1002/chem.201905395] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/22/2020] [Indexed: 12/18/2022]
Abstract
Metallacarboranes with the shape of the Greek letter θ, such as [Co(C2 B9 H11 )2 ]- , were tested, for the first time, as efficient photoredox catalysts in the oxidation of aromatic and aliphatic alcohols in water. Their efficiency is linked to their high solubility in water, their high oxidizing power (Co4+/3+ ), and their absence of fluorescence on excitation, among others. In most of the studied examples, using a catalyst load of 0.4 mol % gave high yields of 90-95 % with selectivity greater than 99 %. By reducing the catalyst load to 0.01 mol %, quantitative conversion of reactants to products was achieved, in some cases with greater than 99 % yield, high catalyst efficiency reaching a turnover number of 10 000, and a higher yield with a 45 times lower concentration of catalyst. The metallacarboranes can be recovered easily by precipitation on addition of [NMe4 ]Cl. A pathway for the photoredox-catalyzed oxidation of alcohols is proposed.
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Affiliation(s)
- Isabel Guerrero
- Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, Campus UAB, 08193, Bellaterra, Spain.,Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, C/ M. Aurèlia Campmany, 69, 17003, Girona, Spain
| | - Zsolt Kelemen
- Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, Campus UAB, 08193, Bellaterra, Spain
| | - Clara Viñas
- Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, Campus UAB, 08193, Bellaterra, Spain
| | - Isabel Romero
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, C/ M. Aurèlia Campmany, 69, 17003, Girona, Spain
| | - Francesc Teixidor
- Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, Campus UAB, 08193, Bellaterra, Spain
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25
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Cabrera-González J, Chaari M, Teixidor F, Viñas C, Núñez R. Blue Emitting Star-Shaped and Octasilsesquioxane-Based Polyanions Bearing Boron Clusters. Photophysical and Thermal Properties. Molecules 2020; 25:E1210. [PMID: 32156041 PMCID: PMC7179457 DOI: 10.3390/molecules25051210] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/05/2020] [Accepted: 03/05/2020] [Indexed: 12/19/2022] Open
Abstract
High boron content systems were prepared by the peripheral functionalisation of 1,3,5-triphenylbenzene (TPB) and octavinylsilsesquioxane (OVS) with two different anionic boron clusters: closo-dodecaborate (B12) and cobaltabisdicarbollide (COSAN). TPB was successfully decorated with three cluster units by an oxonium ring-opening reaction, while OVS was bonded to eight clusters by catalysed metathesis cross-coupling. The resulting compounds were spectroscopically characterised, and their solution-state photophysical properties analysed. For TPB, the presence of COSAN dramatically quenches the fluorescence emission (λem = 369 nm; ΦF = 0.8%), while B12-substituted TPB shows an appreciable emission efficiency (λem = 394 nm; ΦF = 12.8%). For octasilsesquioxanes, the presence of either COSAN or B12 seems to be responsible for ∼80 nm bathochromic shift with respect to the core emission, but both cases show low emission fluorescence (ΦF = 1.4-1.8%). In addition, a remarkable improvement of the thermal stability of OVS was observed after its functionalisation with these boron clusters.
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Affiliation(s)
| | | | | | | | - Rosario Núñez
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus U.A.B., 08193 Bellaterra, Barcelona, Spain; (J.C.-G.); (M.C.); (F.T.); (C.V.)
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26
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Matějíček P. Erratic ions: self-assembly and coassembly of ions of nanometer size and of irregular structure. Curr Opin Colloid Interface Sci 2020. [DOI: 10.1016/j.cocis.2019.12.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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27
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Grüner B, Brynda J, Das V, Šícha V, Štěpánková J, Nekvinda J, Holub J, Pospíšilová K, Fábry M, Pachl P, Král V, Kugler M, Mašek V, Medvedíková M, Matějková S, Nová A, Lišková B, Gurská S, Džubák P, Hajdúch M, Řezáčová P. Metallacarborane Sulfamides: Unconventional, Specific, and Highly Selective Inhibitors of Carbonic Anhydrase IX. J Med Chem 2019; 62:9560-9575. [PMID: 31568723 DOI: 10.1021/acs.jmedchem.9b00945] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Carbonic anhydrase IX (CAIX) is a transmembrane enzyme that regulates pH in hypoxic tumors and promotes tumor cell survival. Its expression is associated with the occurrence of metastases and poor prognosis. Here, we present nine derivatives of the cobalt bis(dicarbollide)(1-) anion substituted at the boron or carbon sites by alkysulfamide group(s) as highly specific and selective inhibitors of CAIX. Interactions of these compounds with the active site of CAIX were explored on the atomic level using protein crystallography. Two selected derivatives display subnanomolar or picomolar inhibition constants and high selectivity for the tumor-specific CAIX over cytosolic isoform CAII. Both derivatives had a time-dependent effect on the growth of multicellular spheroids of HT-29 and HCT116 colorectal cancer cells, facilitated penetration and/or accumulation of doxorubicin into spheroids, and displayed low toxicity and showed promising pharmacokinetics and a significant inhibitory effect on tumor growth in syngenic breast 4T1 and colorectal HT-29 cancer xenotransplants.
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Affiliation(s)
- Bohumír Grüner
- Institute of Inorganic Chemistry of the Czech Academy of Sciences , 250 68 Řež , Czech Republic
| | - Jiří Brynda
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences , Flemingovo nám. 2 , 16610 Prague , Czech Republic.,Institute of Molecular Genetics of the Czech Academy of Sciences , Flemingovo nam. 2 , 16610 Prague , Czech Republic
| | - Viswanath Das
- Institute of Molecular and Translational Medicine , Olomouc, Hněvotínská 1333/5 , 77900 Olomouc , Czech Republic.,Cancer Research Czech Republic , Hněvotínská 5 , 77900 Olomouc , Czech Republic
| | - Václav Šícha
- Institute of Inorganic Chemistry of the Czech Academy of Sciences , 250 68 Řež , Czech Republic
| | - Jana Štěpánková
- Institute of Molecular and Translational Medicine , Olomouc, Hněvotínská 1333/5 , 77900 Olomouc , Czech Republic.,Cancer Research Czech Republic , Hněvotínská 5 , 77900 Olomouc , Czech Republic
| | - Jan Nekvinda
- Institute of Inorganic Chemistry of the Czech Academy of Sciences , 250 68 Řež , Czech Republic.,Department of Organic Chemistry, Faculty of Natural Science , Charles University , Hlavova 2030 , 12800 Prague 2, Czech Republic
| | - Josef Holub
- Institute of Inorganic Chemistry of the Czech Academy of Sciences , 250 68 Řež , Czech Republic
| | - Klára Pospíšilová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences , Flemingovo nám. 2 , 16610 Prague , Czech Republic
| | - Milan Fábry
- Institute of Molecular Genetics of the Czech Academy of Sciences , Flemingovo nam. 2 , 16610 Prague , Czech Republic
| | - Petr Pachl
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences , Flemingovo nám. 2 , 16610 Prague , Czech Republic
| | - Vlastimil Král
- Institute of Molecular Genetics of the Czech Academy of Sciences , Flemingovo nam. 2 , 16610 Prague , Czech Republic
| | - Michael Kugler
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences , Flemingovo nám. 2 , 16610 Prague , Czech Republic
| | - Vlastimil Mašek
- Institute of Molecular and Translational Medicine , Olomouc, Hněvotínská 1333/5 , 77900 Olomouc , Czech Republic
| | - Martina Medvedíková
- Institute of Molecular and Translational Medicine , Olomouc, Hněvotínská 1333/5 , 77900 Olomouc , Czech Republic
| | - Stanislava Matějková
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences , Flemingovo nám. 2 , 16610 Prague , Czech Republic
| | - Alice Nová
- Institute of Molecular and Translational Medicine , Olomouc, Hněvotínská 1333/5 , 77900 Olomouc , Czech Republic
| | - Barbora Lišková
- Institute of Molecular and Translational Medicine , Olomouc, Hněvotínská 1333/5 , 77900 Olomouc , Czech Republic
| | - Soňa Gurská
- Institute of Molecular and Translational Medicine , Olomouc, Hněvotínská 1333/5 , 77900 Olomouc , Czech Republic
| | - Petr Džubák
- Institute of Molecular and Translational Medicine , Olomouc, Hněvotínská 1333/5 , 77900 Olomouc , Czech Republic.,Cancer Research Czech Republic , Hněvotínská 5 , 77900 Olomouc , Czech Republic
| | - Marián Hajdúch
- Institute of Molecular and Translational Medicine , Olomouc, Hněvotínská 1333/5 , 77900 Olomouc , Czech Republic.,Cancer Research Czech Republic , Hněvotínská 5 , 77900 Olomouc , Czech Republic
| | - Pavlína Řezáčová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences , Flemingovo nám. 2 , 16610 Prague , Czech Republic.,Institute of Molecular Genetics of the Czech Academy of Sciences , Flemingovo nam. 2 , 16610 Prague , Czech Republic
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Abstract
3,1,2-Ruthenadicarbadodecaborane complexes bearing the [C2B9H11]2− (dicarbollide) ligand are robust scaffolds, with exceptional thermal and chemical stability. Our previous work has shown that these complexes possess promising anti-tumor activities in vitro, and tend to form aggregates (or self-assemblies) in aqueous solutions. Here, we report on the synthesis and characterization of four ruthenium(II) complexes of the type [3-(η6-arene)-1,2-R2-3,1,2-RuC2B9H9], bearing either non-polar (R = Me (2–4)) or polar (R = CO2Me (7)) substituents at the cluster carbon atoms. The behavior in aqueous solution of complexes 2, 7 and the parent unsubstituted [3-(η6-p-cymene)-3,1,2-RuC2B9H11] (8) was investigated via UV-Vis spectroscopy, mass spectrometry and nanoparticle tracking analysis (NTA). All complexes showed spontaneous formation of self-assemblies (108–109 particles mL−1), at low micromolar concentration, with high polydispersity. For perspective applications in medicine, there is thus a strong need for further characterization of the spontaneous self-assembly behavior in aqueous solutions for the class of neutral metallacarboranes, with the ultimate scope of finding the optimal conditions for exploiting this self-assembling behavior for improved biological performance.
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Buades AB, Arderiu VS, Maxwell L, Amoza M, Choquesillo-Lazarte D, Aliaga-Alcalde N, Viñas C, Teixidor F, Ruiz E. Slow-spin relaxation of a low-spin S = 1/2 Fe III carborane complex. Chem Commun (Camb) 2019; 55:3825-3828. [PMID: 30869690 DOI: 10.1039/c9cc01123d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In this communication, we report the first evidence of slow-spin relaxation of a low-spin FeIII carborane complex. Iron S = 1/2 complexes showing such behaviour are particularly appealing as qubit candidates because they fulfil some of the main requirements to reach long decoherence times, such as moderate magnetic anisotropy, small spin, metal element mainly with zero-nuclear spin and furthermore, large versatility to introduce chemical modifications.
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Affiliation(s)
- Ana B Buades
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Barcelona, Spain
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Goszczyński TM, Fink K, Boratyński J. Icosahedral boron clusters as modifying entities for biomolecules. Expert Opin Biol Ther 2019; 18:205-213. [PMID: 30063861 DOI: 10.1080/14712598.2018.1473369] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
INTRODUCTION Icosahedral boron clusters have unique properties useful in medicinal chemistry: rigidity, chemical stability, and three-dimensional aromaticity. Furthermore, these abiotic compounds have low toxicity and are stable in the biological environment. All these features ultimately give them the ability to interact with biological molecules in a different mode than organic compounds. AREAS COVERED In the present article, we aim to introduce boron clusters as a class of entities suitable for modifications of biomolecules to obtain a specific biological effect. We will focus on icosahedral boron clusters, as well as metallacarboranes, and their biological activity and interaction with the biological environment. EXPERT OPINION Boron clusters are suitable for altering structural and functional features of biomolecules and can be used in the development of new drugs and drug delivery systems. The high affinity of boron clusters, especially metallacarboranes, to albumin creates a new possibility to use them to optimize the pharmacokinetics of biologically active peptides. Boron clusters have high potential in biological and medicinal applications. Due to their peculiar properties, they can be used to optimize parameters critical for the biological activity of therapeutic substances and their affinity toward biological targets.
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Affiliation(s)
- Tomasz M Goszczyński
- a Laboratory of Biomedical Chemistry, Department of Experimental Oncology , Hirszfeld Institute of Immunology and Experimental Therapy, PAS , Wrocław , Poland
| | - Krzysztof Fink
- a Laboratory of Biomedical Chemistry, Department of Experimental Oncology , Hirszfeld Institute of Immunology and Experimental Therapy, PAS , Wrocław , Poland
| | - Janusz Boratyński
- a Laboratory of Biomedical Chemistry, Department of Experimental Oncology , Hirszfeld Institute of Immunology and Experimental Therapy, PAS , Wrocław , Poland
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31
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Fernandez-Alvarez R, Medoš Ž, Tošner Z, Zhigunov A, Uchman M, Hervø-Hansen S, Lund M, Bešter-Rogač M, Matějíček P. Total Description of Intrinsic Amphiphile Aggregation: Calorimetry Study and Molecular Probing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:14448-14457. [PMID: 30343575 DOI: 10.1021/acs.langmuir.8b03462] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Isothermal titration calorimetry (ITC) is an apt tool for a total thermodynamic description of self-assembly of atypical amphiphiles such as anionic boron cluster compounds (COSAN) in water. Global fitting of ITC enthalpograms reveals remarkable features that differentiate COSAN from classical amphiphiles: (i) strong enthalpy and weak entropy contribution to the free energy of aggregation, (ii) low degree of counterion binding, and (iii) very low aggregation number, leading to deviations from the ideal closed association model. The counterion condensation obtained from the thermodynamic model was compared with the results of 7Li DOSY NMR of Li[COSAN] micelles, which allows direct tracking of Li cations. The basic thermodynamic study of COSAN alkaline salt aggregation was complemented by NMR and ITC experiments in dilute Li/NaCl and acetonitrile aqueous solutions of COSAN. The strong affinity of acetonitrile molecules to COSAN clusters was microscopically investigated by all-atomic molecular dynamics simulations. The impact of ionic strength on COSAN self-assembling was comparable to the behavior of classical amphiphiles, whereas even a small amount of acetonitrile cosolvent has a pronounced nonclassical character of COSAN aggregation. It demonstrates that large self-assembling changes are triggered by traces of organic solvents.
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Affiliation(s)
| | - Žiga Medoš
- Faculty of Chemistry and Chemical Technology , University of Ljubljana , Večna pot 113 , SI-1000 Ljubljana , Slovenia
| | | | - Alexander Zhigunov
- Institute of Macromolecular Chemistry, v.v.i. , Academy of Sciences of the Czech Republic , Heyrovský Sq. 2 , 16206 Prague 6 , Czechia
| | | | - Stefan Hervø-Hansen
- Division of Theoretical Chemistry , University of Lund , P.O. Box 124, SE-22100 Lund , Sweden
| | - Mikael Lund
- Division of Theoretical Chemistry , University of Lund , P.O. Box 124, SE-22100 Lund , Sweden
| | - Marija Bešter-Rogač
- Faculty of Chemistry and Chemical Technology , University of Ljubljana , Večna pot 113 , SI-1000 Ljubljana , Slovenia
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Fuentes I, García-Mendiola T, Sato S, Pita M, Nakamura H, Lorenzo E, Teixidor F, Marques F, Viñas C. Metallacarboranes on the Road to Anticancer Therapies: Cellular Uptake, DNA Interaction, and Biological Evaluation of Cobaltabisdicarbollide [COSAN] . Chemistry 2018; 24:17239-17254. [PMID: 30222214 DOI: 10.1002/chem.201803178] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Indexed: 01/24/2023]
Abstract
After uptake by U87 MG and A375 cancer cells, cobaltabisdicarbollide [COSAN]- distributes between membrane and nucleus and presents no relevant cytotoxicity against both cell lines even for long incubation times. The cytotoxicity of Na[COSAN] was also tested towards one normal cell line, the V79 fibroblasts, in order to ascertain the noncytotoxic profile of the compound. As the cell's nucleus contains DNA, the interaction between [COSAN]- and double-stranded calf thymus DNA (CT-dsDNA) has been investigated. There is a strong interaction between both molecules forming a nanohybrid CT-dsDNA-[COSAN] biomaterial, which was fully characterized. Moreover, Na[COSAN] shows characteristic redox peaks ascribed to the oxidation/reduction of Co3+/2+ at a formal potential of -1.444 V and it can be accumulated at a surface-immobilized DNA layer of glassy carbon electrodes. The equilibrium surface-binding constants (Kox /Kred ), which confirm that [COSAN]- interacts with DNA by an intercalative or electrostatic mode, depending on the ionic strength of the solution, were estimated. In addition, high binding affinity of Na[COSAN] to proteins was observed by 11 B{1 H} NMR and confirmed in vivo. Finally, biodistribution studies of [COSAN]- in normal mice were run. After administration, Na[COSAN] was distributed into many organs but mainly accumulated in the reticuloendothelial system (RES), including liver and spleen. After 1 h, the formation of aggregates by plasma protein interaction plays a role in the biodistribution profile; the aggregates accumulate mostly in the lungs. Na[COSAN], which displays low toxicity and high uptake by relevant cancer cells accumulating boron within the nucleus, could act as a suitable compound for further developments as boron neutron capture therapy (BNCT) agents.
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Affiliation(s)
- Isabel Fuentes
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Tania García-Mendiola
- Instituto Madrileño de Estudios Avanzados (IMDEA) Nanociencia, 28049, Madrid, Spain.,Departamento Química AnalíticayAnálisis Instrumental, Universidad Autónoma de Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - Shinichi Sato
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8503, Japan
| | - Marcos Pita
- Instituto de Catalisis (CSIC), Campus Universidad Autónoma, 28049, Madrid, Spain
| | - Hiroyuki Nakamura
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8503, Japan
| | - Encarnación Lorenzo
- Instituto Madrileño de Estudios Avanzados (IMDEA) Nanociencia, 28049, Madrid, Spain.,Departamento Química AnalíticayAnálisis Instrumental, Universidad Autónoma de Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139.7), 2695-066, Bobadela, LRS, Portugal
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Barcelona, Spain
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33
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Assaf KI, Nau WM. The Chaotropic Effect as an Assembly Motif in Chemistry. Angew Chem Int Ed Engl 2018; 57:13968-13981. [PMID: 29992706 PMCID: PMC6220808 DOI: 10.1002/anie.201804597] [Citation(s) in RCA: 194] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 07/01/2018] [Indexed: 11/26/2022]
Abstract
Following up on scattered reports on interactions of conventional chaotropic ions (for example, I- , SCN- , ClO4- ) with macrocyclic host molecules, biomolecules, and hydrophobic neutral surfaces in aqueous solution, the chaotropic effect has recently emerged as a generic driving force for supramolecular assembly, orthogonal to the hydrophobic effect. The chaotropic effect becomes most effective for very large ions that extend beyond the classical Hofmeister scale and that can be referred to as superchaotropic ions (for example, borate clusters and polyoxometalates). In this Minireview, we present a continuous scale of water-solute interactions that includes the solvation of kosmotropic, chaotropic, and hydrophobic solutes, as well as the creation of void space (cavitation). Recent examples for the association of chaotropic anions to hydrophobic synthetic and biological binding sites, lipid bilayers, and surfaces are discussed.
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Affiliation(s)
- Khaleel I. Assaf
- Department of Life Sciences and ChemistryJacobs University BremenCampus Ring 128759BremenGermany
| | - Werner M. Nau
- Department of Life Sciences and ChemistryJacobs University BremenCampus Ring 128759BremenGermany
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34
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Affiliation(s)
- Khaleel I. Assaf
- Department of Life Sciences and Chemistry; Jacobs University Bremen; Campus Ring 1 28759 Bremen Deutschland
| | - Werner M. Nau
- Department of Life Sciences and Chemistry; Jacobs University Bremen; Campus Ring 1 28759 Bremen Deutschland
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35
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36
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Fuentes I, Andrio A, García-Bernabé A, Escorihuela J, Viñas C, Teixidor F, Compañ V. Structural and dielectric properties of cobaltacarborane composite polybenzimidazole membranes as solid polymer electrolytes at high temperature. Phys Chem Chem Phys 2018; 20:10173-10184. [PMID: 29594295 DOI: 10.1039/c8cp00372f] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The conductivity of a series of composite membranes, based on polybenzimidazole (PBI) containing the metallacarborane salt M[Co(C2B9H11)2], M[COSANE] and tetraphenylborate, M[B(C6H5)4], M[TPB] both anions having the same number of atoms and the same negative charge, has been investigated. Different cations (M = H+, Li+ and Na+) have been studied and the composite membranes have been characterized by water uptake, swelling ratios, ATR FT-IR, thermogravimetric analysis and electrochemical impedance spectroscopy to explore the dielectric response and ion dynamics in composite membranes. Our results show that conductivity increases with increasing temperature and it is higher for H+ than for Li+ and Na+ for all temperatures under study. The mobility of Li+ is greater in [COSANE]- than in [TPB]- composite PBI@membranes while for Na+ it is the opposite. The temperature dependence of the conductivity of the composite was followed by a typical Arrhenius behaviour with two different regions: (1) between 20 and 100 °C, and (2) between 100 and 150 °C. Using the analysis of electrode polarization (EP) based on the Thrukhan theory we have calculated the ionic diffusion coefficients and the density of carriers. From the double logarithmic plot of the imaginary part of the conductivity (σ'') versus frequency in the entire range of temperatures studied we have determined for each sample at each temperature, the frequency values of the onset (fON) and full development of electrode polarization (fMAX), respectively, which permit us to calculate static permittivity.
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Affiliation(s)
- Isabel Fuentes
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
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37
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Chaari M, Gaztelumendi N, Cabrera-González J, Peixoto-Moledo P, Viñas C, Xochitiotzi-Flores E, Farfán N, Ben Salah A, Nogués C, Núñez R. Fluorescent BODIPY-Anionic Boron Cluster Conjugates as Potential Agents for Cell Tracking. Bioconjug Chem 2018; 29:1763-1773. [DOI: 10.1021/acs.bioconjchem.8b00204] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mahdi Chaari
- Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus de la UAB, E-08193 Bellaterra, Barcelona, Spain
- Laboratoire des Sciences des Matériaux et de l’Environnement, Faculté des Sciences de Sfax, Université de Sfax, B.P. 1171, 3000 Sfax, Tunisie
| | - Nerea Gaztelumendi
- Departament de Biologia Cel·lular, Fisiologia i Immunologia. Universitat Autònoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain
| | - Justo Cabrera-González
- Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus de la UAB, E-08193 Bellaterra, Barcelona, Spain
| | - Paula Peixoto-Moledo
- Departament de Biologia Cel·lular, Fisiologia i Immunologia. Universitat Autònoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain
| | - Clara Viñas
- Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus de la UAB, E-08193 Bellaterra, Barcelona, Spain
| | - Elba Xochitiotzi-Flores
- Facultad de Química, Departamento de Química Orgánica, Universidad Nacional Autónoma de México, 04510 México CDMEX, México
| | - Norberto Farfán
- Facultad de Química, Departamento de Química Orgánica, Universidad Nacional Autónoma de México, 04510 México CDMEX, México
| | - Abdelhamid Ben Salah
- Laboratoire des Sciences des Matériaux et de l’Environnement, Faculté des Sciences de Sfax, Université de Sfax, B.P. 1171, 3000 Sfax, Tunisie
| | - Carme Nogués
- Departament de Biologia Cel·lular, Fisiologia i Immunologia. Universitat Autònoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain
| | - Rosario Núñez
- Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus de la UAB, E-08193 Bellaterra, Barcelona, Spain
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Fernandez-Alvarez R, Ďorďovič V, Uchman M, Matějíček P. Amphiphiles without Head-and-Tail Design: Nanostructures Based on the Self-Assembly of Anionic Boron Cluster Compounds. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:3541-3554. [PMID: 29144761 DOI: 10.1021/acs.langmuir.7b03306] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Anionic boron cluster compounds (ABCCs) are intrinsically amphiphilic building blocks suitable for nanochemistry. ABCCs are involved in atypical weak interactions, notably dihydrogen bonding, due to their peculiar polyhedral structure, consisting of negatively charged B-H units. The most striking feature of ABCCs that differentiates them from typical surfactants is the lack of head-and-tail structure. Furthermore, their structure can be described as intrinsically amphiphilic or aquaneutral. Therefore, classical terms established to describe self-assembly of classical amphiphiles are insufficient and need to be reconsidered. The opinions and theories focused on the solution behavior of ABCCs are briefly discussed. Moreover, a comparison between ABCCs with other amphiphilic systems is made focusing on the explanation of enthalpy-driven micellization or relations between hydrophobic and chaotropic effects. Despite the unusual structure, ABCCs still show self- and coassembly properties comparable to classical amphiphiles such as ionic surfactants. They self-assemble into micelles in water according to the closed association model. The most typical features of ABCCs solution behavior is demonstrated on calorimetry, NMR spectroscopy, and tensiometry experiments. Altogether, the unique features of ABCCs makes them a valuable inclusion into the nanochemisty toolbox to develop novel nanostructures both alone and with other molecules.
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Affiliation(s)
- Roberto Fernandez-Alvarez
- Department of Physical and Macromolecular Chemistry, Faculty of Science , Charles University , Hlavova 2030 , 128 40 Prague 2 , Czechia
| | - Vladimír Ďorďovič
- Department of Physical and Macromolecular Chemistry, Faculty of Science , Charles University , Hlavova 2030 , 128 40 Prague 2 , Czechia
| | - Mariusz Uchman
- Department of Physical and Macromolecular Chemistry, Faculty of Science , Charles University , Hlavova 2030 , 128 40 Prague 2 , Czechia
| | - Pavel Matějíček
- Department of Physical and Macromolecular Chemistry, Faculty of Science , Charles University , Hlavova 2030 , 128 40 Prague 2 , Czechia
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39
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Muñoz-Flores BM, Cabrera-González J, Viñas C, Chávez-Reyes A, Dias HVR, Jiménez-Pérez VM, Núñez R. Organotin Dyes Bearing Anionic Boron Clusters as Cell-Staining Fluorescent Probes. Chemistry 2018; 24:5601-5612. [PMID: 29338104 DOI: 10.1002/chem.201705804] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Indexed: 11/08/2022]
Abstract
Within the cell nucleus, in the nucleoli, ribosomal RNAs are synthesized and participate in several biological processes. To better understand nucleoli-related processes, their visualization is often required, for which specific markers are needed. Herein, we report the design of novel fluorescent organotin compounds derived from 4-hydroxy-N'-((2-hydroxynaphthalen-1-yl)methylene)benzohydrazide and their cytoplasm and nucleoli staining of B16F10 cells in vitro. Tin compounds bearing an aliphatic carbon chain (-C12 H25 ) and an electron-donating group (-OH) were prepared, and the latter could be derivatized to bear the boron cluster anions [B12 H12 ]2- and [3,3'-Co(1,2-C2 B9 H11 )2 ]- (COSAN). All of the conjugates have been fully characterized and their luminescence properties have been assessed. In general, they show good quantum yields in solution (24-49 %), those for the COSAN derivatives being lower. Remarkably, the linking of [B12 H12 ]2- and COSAN to the complexes made them more soluble, without being detrimental to their luminescence properties. Living B16F10 cells were treated with all of the compounds to determine their fluorescence staining properties; the compounds bearing the aliphatic chain showed a reduced staining capacity due to the formation of aggregates. Notably, the complexes bearing different boron clusters showed different staining effects; those bearing [B12 H12 ]2- showed extraordinary staining of the nucleoli and cytoplasm, whereas those bearing COSAN were only detected in the cytoplasm. The remarkable fluorescence staining properties shown by these organotin compounds make them excellent candidates for fluorescence bioimaging in vitro.
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Affiliation(s)
- Blanca M Muñoz-Flores
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Ciudad Universitaria, Av. Universidad s/n, C. P., 66451, Nuevo León, México
| | - Justo Cabrera-González
- Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Spain
| | - Clara Viñas
- Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Spain
| | - Arturo Chávez-Reyes
- Centro de Investigación y de Estudios Avanzados del IPN, Unidad Monterrey, PIIT, C.P., 66600 Apodaca, Nuevo León, México
| | - H V Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas, 76019-0065, United States
| | - Víctor M Jiménez-Pérez
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Ciudad Universitaria, Av. Universidad s/n, C. P., 66451, Nuevo León, México
| | - Rosario Núñez
- Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Spain
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40
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Ďorďovič V, Verbraeken B, Hogenboom R, Kereïche S, Matějíček P, Uchman M. Tuning of Thermoresponsivity of a Poly(2-alkyl-2-oxazoline) Block Copolymer by Interaction with Surface-Active and Chaotropic Metallacarborane Anion. Chem Asian J 2018; 13:838-845. [PMID: 29384259 DOI: 10.1002/asia.201701720] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Indexed: 11/08/2022]
Abstract
Thermoresponsive nanoparticles based on the interaction of metallacarboranes, bulky chaotropic and surface-active anions, and poly(2-alkyl-2-oxazoline) block copolymers were prepared. Recently, the great potential of metallacarboranes have been recognized in biomedicine and many delivery nanosystems have been proposed. However, none of them are thermoresponsive. Therefore, a thermoresponsive block copolymer, poly(2-methyl-2-oxazoline)-block-poly(2-n-propyl-2-oxazoline) (PMeOx-PPrOx), was synthesized to encapsulate metallacarboranes. Light scattering, NMR spectroscopy, isothermal titration calorimetry, and cryogenic TEM were used to characterize all solutions of the formed nanoparticles. The cloud-point temperature (TCP ) of the block copolymer was observed at 30 °C and polymeric micelles formed above this temperature. Cobalt bis(dicarbollide) anion (COSAN) interacts with both polymeric segments. Depending on the COSAN concentration, this affinity influenced the phase transition of the thermoresponsive PPrOx block. The TCP shifted to lower values at a lower COSAN content. At higher COSAN concentrations, the hybrid nanoparticles are fragmented into relatively small pieces. This system is also thermoresponsive, whereby an increase in temperature leads to higher polymer mobility and COSAN release.
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Affiliation(s)
- Vladimír Ďorďovič
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague 2, Czech Republic
| | - Bart Verbraeken
- Supramolecular Chemistry Group, Department of Organic and Macromolecular chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281-S4, B-9000, Gent, Belgium
| | - Richard Hogenboom
- Supramolecular Chemistry Group, Department of Organic and Macromolecular chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281-S4, B-9000, Gent, Belgium
| | - Sami Kereïche
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague 2, Czech Republic.,Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital in Prague, Purkynie Ustav, Albertov 4, 12 801, Prague, Czech Republic
| | - Pavel Matějíček
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague 2, Czech Republic
| | - Mariusz Uchman
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague 2, Czech Republic
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41
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Buades AB, Sanchez Arderiu V, Olid-Britos D, Viñas C, Sillanpää R, Haukka M, Fontrodona X, Paradinas M, Ocal C, Teixidor F. Electron Accumulative Molecules. J Am Chem Soc 2018; 140:2957-2970. [PMID: 29397708 DOI: 10.1021/jacs.7b12815] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
With the goal to produce molecules with high electron accepting capacity and low reorganization energy upon gaining one or more electrons, a synthesis procedure leading to the formation of a B-N(aromatic) bond in a cluster has been developed. The research was focused on the development of a molecular structure able to accept and release a specific number of electrons without decomposing or change in its structural arrangement. The synthetic procedure consists of a parallel decomposition reaction to generate a reactive electrophile and a synthesis reaction to generate the B-N(aromatic) bond. This procedure has paved the way to produce the metallacarboranylviologen [M(C2B9H11)(C2B9H10)-NC5H4-C5H4N-M'(C2B9H11)(C2B9H10)] (M = M' = Co, Fe and M = Co and M' = Fe) and semi(metallacarboranyl)viologen [3,3'-M(8-(NC5H4-C5H4N-1,2-C2B9H10)(1',2'-C2B9H11)] (M = Co, Fe) electron cumulative molecules. These molecules are able to accept up to five electrons and to donate one in single electron steps at accessible potentials and in a reversible way. By targeted synthesis and corresponding electrochemical tests each electron transfer (ET) step has been assigned to specific fragments of the molecules. The molecules have been carefully characterized, and the electronic communication between both metal centers (when this situation applies) has been definitely observed through the coplanarity of both pyridine fragments. The structural characteristics of these molecules imply a low reorganization energy that is a necessary requirement for low energy ET processes. This makes them electronically comparable to fullerenes, but on their side, they have a wide range of possible solvents. The ET from one molecule to another has been clearly demonstrated as well as their self-organizing capacity. We consider that these molecules, thanks to their easy synthesis, ET, self-organizing capacity, wide range of solubility, and easy processability, can find important application in any area where ET is paramount.
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Affiliation(s)
- Ana B Buades
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Víctor Sanchez Arderiu
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - David Olid-Britos
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Reijo Sillanpää
- Dept. of Chemistry, University of Jyväskylä , FIN-40014 Jyvaskyla, Finland
| | - Matti Haukka
- Dept. of Chemistry, University of Jyväskylä , FIN-40014 Jyvaskyla, Finland
| | - Xavier Fontrodona
- Dept. de Química and Serveis Tècnics de Recerca, Universitat de Girona , Campus de Montilivi, E-17071 Girona, Spain
| | - Markos Paradinas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Carmen Ocal
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus UAB, Bellaterra, 08193 Barcelona, Spain
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42
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Dąbrowska A, Matuszewski M, Zwoliński K, Ignaczak A, Olejniczak AB. Insight into lipophilicity of deoxyribonucleoside‑boron cluster conjugates. Eur J Pharm Sci 2018; 111:226-237. [DOI: 10.1016/j.ejps.2017.09.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 09/21/2017] [Accepted: 09/24/2017] [Indexed: 01/14/2023]
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43
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Uchman M, Abrikosov AI, Lepšík M, Lund M, Matějíček P. Nonclassical Hydrophobic Effect in Micellization: Molecular Arrangement of Non-Amphiphilic Structures. ADVANCED THEORY AND SIMULATIONS 2017. [DOI: 10.1002/adts.201700002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mariusz Uchman
- Department of Physical and Macromolecular Chemistry; Faculty of Science; Charles University; Prague 2 Czech Republic
| | - Alexei I. Abrikosov
- Division of Physical Chemistry; University of Lund; Lund Sweden
- Materials Modeling and Development Laboratory; National University of Science and Technology ‘MISIS’; Moscow Russia
| | - Martin Lepšík
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Prague 6 Czech Republic
| | - Mikael Lund
- Division of Theoretical Chemistry; University of Lund; Lund Sweden
| | - Pavel Matějíček
- Department of Physical and Macromolecular Chemistry; Faculty of Science; Charles University; Prague 2 Czech Republic
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44
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Bennour I, Haukka M, Teixidor F, Viñas C, Kabadou A. Crystal structure and Hirshfeld surface analysis of [N(CH3)4][2,2′-Fe(1,7-closo-C2B9H11)2]. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.05.047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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45
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Zheng Y, Liu W, Chen Y, Jiang H, Yan H, Kosenko I, Chekulaeva L, Sivaev I, Bregadze V, Wang X. A Highly Potent Antibacterial Agent Targeting Methicillin-Resistant Staphylococcus aureus Based on Cobalt Bis(1,2-Dicarbollide) Alkoxy Derivative. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00426] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Youkun Zheng
- State
Key Laboratory of Bioelectronics, National Demonstration Center for
Experimental Biomedical Engineering Education, School of Biological
Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Weiwei Liu
- State
Key Laboratory of Bioelectronics, National Demonstration Center for
Experimental Biomedical Engineering Education, School of Biological
Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yun Chen
- State
Key Laboratory of Bioelectronics, National Demonstration Center for
Experimental Biomedical Engineering Education, School of Biological
Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Hui Jiang
- State
Key Laboratory of Bioelectronics, National Demonstration Center for
Experimental Biomedical Engineering Education, School of Biological
Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Hong Yan
- State
Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China
| | - Irina Kosenko
- A.N.
Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, Moscow 119991, Russia
| | - Lubov Chekulaeva
- A.N.
Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, Moscow 119991, Russia
| | - Igor Sivaev
- A.N.
Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, Moscow 119991, Russia
| | - Vladimir Bregadze
- A.N.
Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, Moscow 119991, Russia
| | - Xuemei Wang
- State
Key Laboratory of Bioelectronics, National Demonstration Center for
Experimental Biomedical Engineering Education, School of Biological
Science and Medical Engineering, Southeast University, Nanjing 210096, China
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46
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Goszczyński TM, Fink K, Kowalski K, Leśnikowski ZJ, Boratyński J. Interactions of Boron Clusters and their Derivatives with Serum Albumin. Sci Rep 2017; 7:9800. [PMID: 28852112 PMCID: PMC5574927 DOI: 10.1038/s41598-017-10314-0] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 07/31/2017] [Indexed: 12/21/2022] Open
Abstract
Boron clusters are polyhedral boron hydrides with unique properties, and they are becoming increasingly widely used in biology and medicine, including for boron neutron capture therapy (BNCT) of cancers and in the design of novel bioactive molecules and potential drugs. Among boron cluster types, icosahedral boranes, carboranes, and metallacarboranes are particularly interesting, and there is a need for basic studies on their interaction with biologically important molecules, such as proteins. Herein, we report studies on the interaction of selected boron clusters and their derivatives with serum albumin, the most abundant protein in mammalian blood. The interaction of boron clusters with albumin was examined by fluorescence quenching, circular dichroism, dynamic and static light scattering measurements and MALDI-TOF mass spectrometry. Our results showed that metallacarboranes have the strongest interaction with albumin among the tested clusters. The observed strength of boron cluster interactions with albumin decreases in order: metallacarboranes [M(C2B9H11)2]− > carboranes (C2B10H12) >> dodecaborate anion [B12H12]2−. Metallacarboranes first specifically interact with the binding cavity of albumin and then, with increasing compound concentrations, interact non-specifically with the protein surface. These findings can be of importance and are useful in the development of new bioactive compounds that contain boron clusters.
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Affiliation(s)
- Tomasz M Goszczyński
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 Rudolf Weigl St., 53-114, Wrocław, Poland.
| | - Krzysztof Fink
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 Rudolf Weigl St., 53-114, Wrocław, Poland
| | - Konrad Kowalski
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 Rudolf Weigl St., 53-114, Wrocław, Poland
| | - Zbigniew J Leśnikowski
- Laboratory of Molecular Virology and Biological Chemistry, Institute of Medical Biology, Polish Academy of Sciences, 106 Lodowa St., 93-232, Łódź, Poland.
| | - Janusz Boratyński
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 Rudolf Weigl St., 53-114, Wrocław, Poland
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47
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Carvalho FR, Zampieri EH, Caetano W, Silva R. Unveiling One-Dimensional Supramolecular Structures Formed through π-π Stacking of Phenothiazines by Differential Pulse Voltammetry. Chemphyschem 2017; 18:1224-1228. [PMID: 28276181 DOI: 10.1002/cphc.201700183] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Indexed: 01/01/2023]
Abstract
Organic-based nanomaterials can be self-assembled by strong and directional intermolecular forces such as π-π interactions. Experimental information about the stability, size, and geometry of the formed structures is very limited for species that easily aggregate, even at very low concentrations. Differential pulse voltammetry (DPV) can unveil the formation, growth, and also the stability window of ordered, one-dimensional, lamellar self-aggregates formed by supramolecular π stacking of phenothiazines at micromolar (10-6 mol L-1 ) concentrations. The self-diffusion features of the species at different concentrations are determined by DPV and used to probe the π staking process through the concept of the frictional resistance. It is observed that toluidine blue and methylene blue start to self-aggregate around 9 μmol L-1 , and that the self-aggregation process occurs by one-dimensional growth as the concentration of the phenothiazines is increased up to around 170 μmol L-1 for toluidine blue and 200 μmol L-1 for methylene blue. At higher concentrations, the aggregation process leads to structures with lower anisometry.
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Affiliation(s)
- Fernando R Carvalho
- Department of Chemstry, State University of Maringa, Av. Colombo 5790-CE, 87020-90, Maringá, Paraná, Brazil
| | - Eduardo H Zampieri
- Department of Chemstry, State University of Maringa, Av. Colombo 5790-CE, 87020-90, Maringá, Paraná, Brazil
| | - Wilker Caetano
- Department of Chemstry, State University of Maringa, Av. Colombo 5790-CE, 87020-90, Maringá, Paraná, Brazil
| | - Rafael Silva
- Department of Chemstry, State University of Maringa, Av. Colombo 5790-CE, 87020-90, Maringá, Paraná, Brazil
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48
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Rokitskaya TI, Kosenko ID, Sivaev IB, Antonenko YN, Bregadze VI. Fast flip–flop of halogenated cobalt bis(dicarbollide) anion in a lipid bilayer membrane. Phys Chem Chem Phys 2017; 19:25122-25128. [DOI: 10.1039/c7cp04207h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Halogenation dramatically affects the flip–flop of cobalt bis(dicarbollide) across the lipid membrane causing acceleration (Cl, Br, I) or deceleration (F).
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Affiliation(s)
- Tatyana I. Rokitskaya
- Belozersky Institute of Physico-Chemical Biology
- Lomonosov Moscow State University
- Moscow 119991
- Russian Federation
| | - Irina D. Kosenko
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow
- Russian Federation
| | - Igor B. Sivaev
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow
- Russian Federation
| | - Yuri N. Antonenko
- Belozersky Institute of Physico-Chemical Biology
- Lomonosov Moscow State University
- Moscow 119991
- Russian Federation
| | - Vladimir I. Bregadze
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow
- Russian Federation
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49
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Fuentes I, Andrio A, Teixidor F, Viñas C, Compañ V. Enhanced conductivity of sodium versus lithium salts measured by impedance spectroscopy. Sodium cobaltacarboranes as electrolytes of choice. Phys Chem Chem Phys 2017; 19:15177-15186. [DOI: 10.1039/c7cp02526b] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Scheme of the proposed mechanism to explain the mobility of the cations through the monomers COSANE and TPB. While in COSANE the mechanism is through jumps (hopping mechanism) in TPB the ionic transport is vehicular.
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Affiliation(s)
- Isabel Fuentes
- Institut de Ciència de Materials de Barcelona
- 08193 Bellaterra
- Spain
| | - Andreu Andrio
- Departamento de Física aplicada
- Universitat Jaume I
- 12080 Castellón
- Spain
| | | | - Clara Viñas
- Institut de Ciència de Materials de Barcelona
- 08193 Bellaterra
- Spain
| | - Vicente Compañ
- Escuela Técnica Superior de Ingenieros Industriales
- Departamento de Termodinámica Aplicada
- Universidad Politécnica de Valencia
- 46020 Valencia
- Spain
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50
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Ďorďovič V, Tošner Z, Uchman M, Zhigunov A, Reza M, Ruokolainen J, Pramanik G, Cígler P, Kalíková K, Gradzielski M, Matějíček P. Stealth Amphiphiles: Self-Assembly of Polyhedral Boron Clusters. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:6713-22. [PMID: 27287067 DOI: 10.1021/acs.langmuir.6b01995] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
This is the first experimental evidence that both self-assembly and surface activity are common features of all water-soluble boron cluster compounds. The solution behavior of anionic polyhedral boranes (sodium decaborate, sodium dodecaborate, and sodium mercaptododecaborate), carboranes (potassium 1-carba-dodecaborate), and metallacarboranes {sodium [cobalt bis(1,2-dicarbollide)]} was extensively studied, and it is evident that all the anionic boron clusters form multimolecular aggregates in water. However, the mechanism of aggregation is dependent on size and polarity. The series of studied clusters spans from a small hydrophilic decaborate-resembling hydrotrope to a bulky hydrophobic cobalt bis(dicarbollide) behaving like a classical surfactant. Despite their pristine structure resembling Platonic solids, the nature of anionic boron cluster compounds is inherently amphiphilic-they are stealth amphiphiles.
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Affiliation(s)
| | | | | | - Alexander Zhigunov
- Institute of Macromolecular Chemistry, v.v.i., Academy of Sciences of the Czech Republic , Heyrovský Sq. 2, 16206 Prague 6, Czech Republic
| | - Mehedi Reza
- Aalto University , Department of Applied Physics Nanotalo, Puumiehenkuja 2, FI-02150 Espoo, Finland
| | - Janne Ruokolainen
- Aalto University , Department of Applied Physics Nanotalo, Puumiehenkuja 2, FI-02150 Espoo, Finland
| | - Goutam Pramanik
- Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic , Flemingovo nam. 2, 166 10 Prague 6, Czech Republic
| | - Petr Cígler
- Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic , Flemingovo nam. 2, 166 10 Prague 6, Czech Republic
| | | | - Michael Gradzielski
- Stranski-Laboratorium für Physikalische Chemie und Theoretische Chemie, Institut für Chemie, Sekr. TC 7, Technische Universität Berlin , Strasse des 17. Juni 124, D-10623 Berlin, Germany
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