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De Sousa-Coelho AL, Fraqueza G, Aureliano M. Repurposing Therapeutic Drugs Complexed to Vanadium in Cancer. Pharmaceuticals (Basel) 2023; 17:12. [PMID: 38275998 PMCID: PMC10819319 DOI: 10.3390/ph17010012] [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: 11/18/2023] [Revised: 12/16/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024] Open
Abstract
Repurposing drugs by uncovering new indications for approved drugs accelerates the process of establishing new treatments and reduces the high costs of drug discovery and development. Metal complexes with clinically approved drugs allow further opportunities in cancer therapy-many vanadium compounds have previously shown antitumor effects, which makes vanadium a suitable metal to complex with therapeutic drugs, potentially improving their efficacy in cancer treatment. In this review, covering the last 25 years of research in the field, we identified non-oncology-approved drugs suitable as ligands to obtain different vanadium complexes. Metformin-decavanadate, vanadium-bisphosphonates, vanadyl(IV) complexes with non-steroidal anti-inflammatory drugs, and cetirizine and imidazole-based oxidovanadium(IV) complexes, each has a parent drug known to have different medicinal properties and therapeutic indications, and all showed potential as novel anticancer treatments. Nevertheless, the precise mechanisms of action for these vanadium compounds against cancer are still not fully understood.
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Affiliation(s)
- Ana Luísa De Sousa-Coelho
- Algarve Biomedical Center Research Institute (ABC-RI), Universidade do Algarve, 8005-139 Faro, Portugal
- Algarve Biomedical Center (ABC), Universidade do Algarve, 8005-139 Faro, Portugal
- Escola Superior de Saúde, Universidade do Algarve (ESSUAlg), 8005-139 Faro, Portugal
| | - Gil Fraqueza
- Instituto Superior de Engenharia (ISE), Universidade do Algarve, 8005-139 Faro, Portugal;
- Centro de Ciências do Mar (CCMar), Universidade do Algarve, 8005-139 Faro, Portugal
| | - Manuel Aureliano
- Centro de Ciências do Mar (CCMar), Universidade do Algarve, 8005-139 Faro, Portugal
- Faculdade de Ciências e Tecnologia (FCT), Universidade do Algarve, 8005-139 Faro, Portugal
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2
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Carvalho F, Aureliano M. Polyoxometalates Impact as Anticancer Agents. Int J Mol Sci 2023; 24:ijms24055043. [PMID: 36902473 PMCID: PMC10003337 DOI: 10.3390/ijms24055043] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/24/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023] Open
Abstract
Polyoxometalates (POMs) are oxoanions of transition metal ions, such as V, Mo, W, Nb, and Pd, forming a variety of structures with a wide range of applications. Herein, we analyzed recent studies on the effects of polyoxometalates as anticancer agents, particularly their effects on the cell cycle. To this end, a literature search was carried out between March and June 2022, using the keywords "polyoxometalates" and "cell cycle". The effects of POMs on selected cell lines can be diverse, such as their effects in the cell cycle, protein expression, mitochondrial effects, reactive oxygen species (ROS) production, cell death and cell viability. The present study focused on cell viability and cell cycle arrest. Cell viability was analyzed by dividing the POMs into sections according to the constituent compound, namely polyoxovanadates (POVs), polyoxomolybdates (POMos), polyoxopaladates (POPds) and polyoxotungstates (POTs). When comparing and sorting the IC50 values in ascending order, we obtained first POVs, then POTs, POPds and, finally, POMos. When comparing clinically approved drugs and POMs, better results of POMs in relation to drugs were observed in many cases, since the dose required to have an inhibitory concentration of 50% is 2 to 200 times less, depending on the POMs, highlighting that these compounds could become in the future an alternative to existing drugs in cancer therapy.
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Affiliation(s)
- Fátima Carvalho
- Faculdade de Medicina e Ciências Biomédicas (FMCB), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Manuel Aureliano
- Faculdade de Ciências e Tecnologia (FCT), Universidade do Algarve, 8005-139 Faro, Portugal
- Centro de Ciências do Mar (CCMar), Universidade do Algarve, 8005-139 Faro, Portugal
- Correspondence: ; Tel.: +351-289-900-805
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3
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Somasundaram JD, Ebrahimi A, Nandan SP, Cherevan A, Eder D, Šupolíková M, Nováková E, Gyepes R, Krivosudský L. Functionalization of decavanadate anion by coordination to cobalt(II): Binding to proteins, cytotoxicity, and water oxidation catalysis. J Inorg Biochem 2023; 239:112067. [PMID: 36423394 DOI: 10.1016/j.jinorgbio.2022.112067] [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: 09/28/2022] [Revised: 11/01/2022] [Accepted: 11/08/2022] [Indexed: 11/18/2022]
Abstract
A series of five decavanadates (V10) using a simple, one-pot synthesis, adhering to the model template: transition metal ion - decavanadate - ligands:(Hnicotinamide)2{[Co(H2O)3(nicotinamide)2]2[μ-V10O28]}.6H2O (1), {[Co(H2O)4(isonicotinamide)2]3}V10O28·4H2O (2), {[Co(H2O)4]2[Co(H2O)2(μ-pyrazinamide)2][μ-V10O28]}·4H2O (3) {[Co(H2O)4(μ-pyrazinamide)]3.V10O28}·4H2O (4), and (NH4)2{[Ni(H2O)4(2-hydroxyethylpyridine)]2}V10O28·2H2O (5) was synthesized. X-ray analysis reveals that 1 and 3 are decavanadato complexes, while 2, 4 and 5 are decavanadate complex salts. Moreover, 3 is the first example of a polymeric decavanadato complex, employing direct coordination with the metal center and the organic ligand, in toto. From the solution studies using 51V NMR spectroscopy, it was decoded that 1 and 3 stay stable in the model buffer solution and aqueous media. Binding to model proteins, cytotoxicity and water oxidation catalysis (WOC) was studied primarily for 1 and 3 and concluded that neither 1 nor 3 have an interaction with the model proteins thaumatin, lysozyme and proteinase K, because of the presence of the organic ligands in the Co(II) center, any further interplay with the proteins was blocked. Cytotoxicity studies reveal that 1 is 40% less toxic (0.05 mM) and 26% less toxic (0.1 mM) than the uncoordinated V10 with human cell lines A549 and HeLa respectively. In WOC, 1 performed superior activity, by evolving 143.37 nmol of O2 which is 700% (9-fold) increase than the uncoordinated V10.
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Affiliation(s)
- Janaki Devi Somasundaram
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Mlynská dolina, 842 15 Bratislava, Slovakia
| | - Arash Ebrahimi
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Mlynská dolina, 842 15 Bratislava, Slovakia
| | - Sreejith P Nandan
- Institute of Materials Chemistry, Technische Universität Wien, 1060 Vienna, Austria
| | - Alexey Cherevan
- Institute of Materials Chemistry, Technische Universität Wien, 1060 Vienna, Austria.
| | - Dominik Eder
- Institute of Materials Chemistry, Technische Universität Wien, 1060 Vienna, Austria
| | - Miroslava Šupolíková
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Mlynská dolina, 842 15 Bratislava, Slovakia
| | - Eva Nováková
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Mlynská dolina, 842 15 Bratislava, Slovakia
| | - Róbert Gyepes
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, Prague 128 00, Czech Republic
| | - Lukáš Krivosudský
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Mlynská dolina, 842 15 Bratislava, Slovakia.
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4
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Aureliano M, Mitchell SG, Yin P. Editorial: Emerging polyoxometalates with biological, biomedical, and health applications. Front Chem 2022; 10:977317. [PMID: 36017169 PMCID: PMC9397140 DOI: 10.3389/fchem.2022.977317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 11/24/2022] Open
Affiliation(s)
- Manuel Aureliano
- Faculdade de Ciências e Tecnologia, Campus de Gambelas, Universidade do Algarve, Faro, Portugal
- Centro de Ciências do Mar (CCMar), Universidade do Algarve, Faro, Portugal
- *Correspondence: Manuel Aureliano, ; Scott G. Mitchell, ; Panchao Yin,
| | - Scott G. Mitchell
- Instituto de Nanociencia y Materiales de Aragón (INMA), Consejo Superior de Investigaciones Científicas-Universidad de Zaragoza, Zaragoza, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina, Instituto de Salud Carlos III, Madrid, Spain
- *Correspondence: Manuel Aureliano, ; Scott G. Mitchell, ; Panchao Yin,
| | - Panchao Yin
- South China University of Technology, Guangzhou, China
- *Correspondence: Manuel Aureliano, ; Scott G. Mitchell, ; Panchao Yin,
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De Sousa-Coelho AL, Aureliano M, Fraqueza G, Serrão G, Gonçalves J, Sánchez-Lombardo I, Link W, Ferreira BI. Decavanadate and metformin-decavanadate effects in human melanoma cells. J Inorg Biochem 2022; 235:111915. [PMID: 35834898 DOI: 10.1016/j.jinorgbio.2022.111915] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 06/21/2022] [Accepted: 07/03/2022] [Indexed: 10/17/2022]
Abstract
Decavanadate is a polyoxometalate (POMs) that has shown extensive biological activities, including antidiabetic and anticancer activity. Importantly, vanadium-based compounds as well as antidiabetic biguanide drugs, such as metformin, have shown to exert therapeutic effects in melanoma. A combination of these agents, the metformin-decavanadate complex, was also recognized for its antidiabetic effects and recently described as a better treatment than the monotherapy with metformin enabling lower dosage in rodent models of diabetes. Herein, we compare the effects of decavanadate and metformin-decavanadate on Ca2+-ATPase activity in sarcoplasmic reticulum vesicles from rabbit skeletal muscles and on cell signaling events and viability in human melanoma cells. We show that unlike the decavanadate-mediated non-competitive mechanism, metformin-decavanadate inhibits Ca2+-ATPase by a mixed-type competitive-non-competitive inhibition with an IC50 value about 6 times higher (87 μM) than the previously described for decavanadate (15 μM). We also found that both decavanadate and metformin-decavanadate exert antiproliferative effects on melanoma cells at 10 times lower concentrations than monomeric vanadate. Western blot analysis revealed that both, decavanadate and metformin-decavanadate increased phosphorylation of extracellular signal-regulated kinase (ERK) and serine/threonine protein kinase AKT signaling proteins upon 24 h drug exposure, suggesting that the anti-proliferative activities of these compounds act independent of growth-factor signaling pathways.
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Affiliation(s)
- Ana Luísa De Sousa-Coelho
- Algarve Biomedical Center Research Institute (ABC-RI), Universidade do Algarve, Faro, Portugal; Algarve Biomedical Center (ABC), Faro, Portugal; Escola Superior de Saúde (ESS), Universidade do Algarve, Faro, Portugal.
| | - Manuel Aureliano
- Faculdade de Ciências e Tecnologia (FCT), Universidade do Algarve, Faro, Portugal; Centro de Ciências do Mar (CCMar), Universidade do Algarve, Faro, Portugal.
| | - Gil Fraqueza
- Centro de Ciências do Mar (CCMar), Universidade do Algarve, Faro, Portugal; Instituto Superior de Engenharia (ISE), Universidade do Algarve, Faro, Portugal
| | - Gisela Serrão
- Algarve Biomedical Center Research Institute (ABC-RI), Universidade do Algarve, Faro, Portugal
| | - João Gonçalves
- Faculdade de Medicina e Ciências Biomédicas, Universidade do Algarve, Faro, Portugal
| | - Irma Sánchez-Lombardo
- División Académica de Ciencias Básicas, Universidad Juárez Autónoma de Tabasco, Cunduacán, Mexico
| | - Wolfgang Link
- Instituto de Investigaciones Biomédicas "Alberto Sols" (CSIC-UAM). Madrid, Spain
| | - Bibiana I Ferreira
- Algarve Biomedical Center Research Institute (ABC-RI), Universidade do Algarve, Faro, Portugal; Algarve Biomedical Center (ABC), Faro, Portugal; Faculdade de Medicina e Ciências Biomédicas, Universidade do Algarve, Faro, Portugal
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Rusanov DA, Zou J, Babak MV. Biological Properties of Transition Metal Complexes with Metformin and Its Analogues. Pharmaceuticals (Basel) 2022; 15:ph15040453. [PMID: 35455450 PMCID: PMC9031419 DOI: 10.3390/ph15040453] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 03/29/2022] [Accepted: 04/01/2022] [Indexed: 12/12/2022] Open
Abstract
Metformin is a widely prescribed medication for the treatment and management of type 2 diabetes. It belongs to a class of biguanides, which are characterized by a wide range of diverse biological properties, including anticancer, antimicrobial, antimalarial, cardioprotective and other activities. It is known that biguanides serve as excellent N-donor bidentate ligands and readily form complexes with virtually all transition metals. Recent evidence suggests that the mechanism of action of metformin and its analogues is linked to their metal-binding properties. These findings prompted us to summarize the existing data on the synthetic strategies and biological properties of various metal complexes with metformin and its analogues. We demonstrated that coordination of biologically active biguanides to various metal centers often resulted in an improved pharmacological profile, including reduced drug resistance as well as a wider spectrum of activity. In addition, coordination to the redox-active metal centers, such as Au(III), allowed for various activatable strategies, leading to the selective activation of the prodrugs and reduced off-target toxicity.
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Affiliation(s)
- Daniil A. Rusanov
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, China; (D.A.R.); (J.Z.)
- Laboratory of Medicinal Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Avenue 47, 119991 Moscow, Russia
| | - Jiaying Zou
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, China; (D.A.R.); (J.Z.)
- Department of Biochemical Engineering, University College London, Bernard Katz Building, Gower Street, London WC1E 6BT, UK
| | - Maria V. Babak
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, China; (D.A.R.); (J.Z.)
- Correspondence:
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Caro-Ramirez JY, Parente JE, Gaddi GM, Martini N, Franca CA, Urquiza NM, Lezama L, Piro OE, Echeverría GA, Williams PA, Ferrer EG. The biocatalytic activity of the “lantern-like” binuclear copper complex with trisulfide bridges mimicking SOD metallo-proteins. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Aureliano M, Gumerova NI, Sciortino G, Garribba E, McLauchlan CC, Rompel A, Crans DC. Polyoxidovanadates' interactions with proteins: An overview. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214344] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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9
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Louati M, Ksiksi R, Elbini-Dhouib I, Mlayah-Bellalouna S, Doghri R, Srairi-Abid N, Zid MF. Synthesis, structure and characterization of a novel decavanadate, Mg(H2O)6(C4N2H7)4V10O28·4H2O, with a potential antitumor activity. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130711] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Dib N, Silber JJ, Correa NM, Falcone RD. Imim-DEHP reverse micelles investigated with two molecular probes reveals how are the interfacial properties and the coordination behavior of the surfactant. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113592] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Althumairy D, Postal K, Barisas BG, Nunes GG, Roess DA, Crans DC. Polyoxometalates function as indirect activators of a G protein-coupled receptor. Metallomics 2020; 12:1044-1061. [DOI: 10.1039/d0mt00044b] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A series of multivalent polyoxovanadates were found to activate signaling of a G protein coupled receptor, the luteinizing hormone receptor.
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Affiliation(s)
- Duaa Althumairy
- Cell and Molecular Biology Program
- Colorado State University
- Fort Collins
- USA
- Department of Biological Sciences
| | - Kahoana Postal
- Department of Chemistry
- Colorado State University
- Fort Collins
- USA
- Department of Chemistry
| | - B. George Barisas
- Cell and Molecular Biology Program
- Colorado State University
- Fort Collins
- USA
- Department of Chemistry
| | - Giovana G. Nunes
- Department of Chemistry
- Universidade Federal do Paraná
- Curitiba
- Brazil
| | - Deborah A. Roess
- Cell and Molecular Biology Program
- Colorado State University
- Fort Collins
- USA
- Department of Biomedical Sciences, Colorado State University
| | - Debbie C. Crans
- Cell and Molecular Biology Program
- Colorado State University
- Fort Collins
- USA
- Department of Chemistry
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Amanchi SR, Das SK. A Versatile Polyoxovanadate in Diverse Cation Matrices: A Supramolecular Perspective. Front Chem 2018; 6:469. [PMID: 30386767 PMCID: PMC6198037 DOI: 10.3389/fchem.2018.00469] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 09/18/2018] [Indexed: 11/13/2022] Open
Abstract
A series of decavanadate based compounds, formulated as [Co(H2O)6][{Na4(H2O)14}{V10O28}]·4H2O (1), [Zn(H2O)6][Na3(H2O)14] [HV10O28]·4H2O (2), [HMTAH]2 [{Zn(H2O)4}2{V10O28}]·2H2O (3), [{Co(3-amp)(H2O)5}]2 [3-ampH]2 [V10O28] · 6H2O (4), [4-ampH]10[{Na(H2O)6}{HV10O28}][V10O28]·15H2O (5), [{4-ampH}6 {Co(H2O)6}3][V10O28]2·14H2O (6), and [{4-ampH}10{Zn(H2O)6}][V10O28]2·10H2O (7), have been synthesized (where HMTAH = mono-protonated hexamethylenetetramine, 3-ampH = protonated 3-amino pyridine and 4-ampH= protonated 4-aminopyridine) from the relevant aqueous sodium-vanadate solution, by varying the pH of the solution and amino pyridine/hexamine derivatives as well as transition metal salts (Co(II)- and Zn(II)-salts). In this series of compounds 1-7, the polyoxovanadate (POV) cluster [V10O28]6- is the common cluster anion, stabilized by diverse cations. The diverse supramolecular patterns around the decavanadate cluster anion in different cationic matrices have been described to understand the microenvironment in the decavanadate-based minerals. All of these compounds have solvent water molecules in their respective crystal lattices. Since water can interact directly with cations and anions, providing an additional stability and structural diversity, we have analyzed supramolecular water structures in all these compounds to comprehend the role of the lattice water in the formation of natural decavanadate containing minerals. Compounds 1-7, that are isolated at an ambient condition from aqueous solution, are characterized by routine spectral analysis, elemental analyses and finally unambiguously by single crystal X-ray crystallography.
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Affiliation(s)
| | - Samar K Das
- School of Chemistry, University of Hyderabad, Central University, Hyderabad, India
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Sánchez-Lara E, Treviño S, Sánchez-Gaytán BL, Sánchez-Mora E, Eugenia Castro M, Meléndez-Bustamante FJ, Méndez-Rojas MA, González-Vergara E. Decavanadate Salts of Cytosine and Metformin: A Combined Experimental-Theoretical Study of Potential Metallodrugs Against Diabetes and Cancer. Front Chem 2018; 6:402. [PMID: 30333969 PMCID: PMC6176007 DOI: 10.3389/fchem.2018.00402] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 08/20/2018] [Indexed: 01/15/2023] Open
Abstract
Cytosine, a DNA and RNA building-block, and Metformin, the most widely prescribed drug for the treatment of Type 2 Diabetes mellitus were made to react separately with ammonium or sodium metavanadates in acidic aqueous solutions to obtain two polyoxovanadate salts with a 6:1 ratio of cation-anion. Thus, compounds [HCyt]6[V10O28]·4H2O, 1 and [HMetf]6[V10O28]·6H2O, 2 (where HCyt = Cytosinium cation, [C4H6N3O]+ and HMetf = Metforminium cation, [C4H12N5]+) were obtained and characterized by elemental analysis, single crystal X-ray diffraction, vibrational spectroscopy (IR and Raman), solution 51V-NMR, thermogravimetric analysis (TGA-DTGA), as well as, theoretical methods. Both compounds crystallized in P1 ¯ space group with Z' = 1/2, where the anionic charge of the centrosymmetric ion [V10O28]6- is balanced by six Cytosinium and six Metforminium counterions, respectively. Compound 1 is stabilized by π-π stacking interactions coming from the aromatic rings of HCyt cations, as denoted by close contacts of 3.63 Å. On the other hand, guanidinium moieties from the non-planar HMetf in Compound 2 interact with decavanadate μ2-O atoms via N-H···O hydrogen bonds. The vibrational spectroscopic data of both IR and Raman spectra show that the dominant bands in the 1000-450 cm-1 range are due to the symmetric and asymmetric ν(V-O) vibrational modes. In solution, 51V-NMR experiments of both compounds show that polyoxovanadate species are progressively transformed into the monomeric, dimeric and tetrameric oxovanadates. The thermal stability behavior suggests a similar molecular mechanism regarding the loss of water molecules and the decomposition of the organic counterions. Yet, no changes were observed in the TGA range of 540-580°C due to the stability of the [V10O28]6- fragment. Dispersion-corrected density functional theory (DFT-D) calculations were carried out to model the compounds in aqueous phase using a polarized continuum model calculation. Optimized structures were obtained and the main non-covalent interactions were characterized. Biological activities of these compounds are also under investigation. The combination of two therapeutic agents opens up a window toward the generation of potential metalopharmaceuticals with new and exciting pharmacological properties.
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Affiliation(s)
- Eduardo Sánchez-Lara
- Centro de Química del Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Samuel Treviño
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Brenda L. Sánchez-Gaytán
- Centro de Química del Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Enrique Sánchez-Mora
- Instituto de Física “Luis Rivera Terrazas”, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - María Eugenia Castro
- Centro de Química del Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | | | - Miguel A. Méndez-Rojas
- Departamento de Ciencias Químico-Biológicas, Universidad de las Américas Puebla, Puebla, Mexico
| | - Enrique González-Vergara
- Centro de Química del Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
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Missina JM, Gavinho B, Postal K, Santana FS, Valdameri G, de Souza EM, Hughes DL, Ramirez MI, Soares JF, Nunes GG. Effects of Decavanadate Salts with Organic and Inorganic Cations on Escherichia coli, Giardia intestinalis, and Vero Cells. Inorg Chem 2018; 57:11930-11941. [DOI: 10.1021/acs.inorgchem.8b01298] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | - Glaucio Valdameri
- Departamento de Análises Clínicas, Universidade Federal do Paraná, Campus Jardim Botânico, Jardim Botânico, 80210-170 Curitiba, Paraná, Brazil
| | | | - David L. Hughes
- School of Chemistry, University of East Anglia, Norwich NR4 7TJ, United Kingdom
| | - Marcel I. Ramirez
- Fundação Osvaldo Cruz, Av. Brazil, Manguinhos, 4365 Rio de Janeiro, Brazil
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Borunda T, Myers AJ, Mary Fisher J, Crans DC, Johnson MD. Confinement Effects on Chemical Equilibria: Pentacyano(Pyrazine)Ferrate(II) Stability Changes within Nanosized Droplets of Water. Molecules 2018; 23:E858. [PMID: 29642558 PMCID: PMC6016957 DOI: 10.3390/molecules23040858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 03/30/2018] [Accepted: 04/04/2018] [Indexed: 11/16/2022] Open
Abstract
Nanoscale confinement is known to impact properties of molecules and we observed changes in the reactivity of an iron coordination complex, pentacyano(pyrazine)ferrate(II). The confinement of two coordination complexes in a sodium AOT/isooctane reverse micellar (RM) water droplet was found to dramatically increase the hydrolysis rate of [Fe(CN)₅pyz]3- and change the monomer-dimer equilibria between [Fe(CN)₅pyz]3- and [Fe₂(CN)10pyz]6-. Combined UV-Vis and ¹H-NMR spectra of these complexes in RMs were analyzed and the position of the monomer-dimer equilibrium and the relative reaction times were determined at three different RM sizes. The data show that the hydrolysis rates (loss of pyrazine) are dramatically enhanced in RMs over bulk water and increase as the size of the RM decreases. Likewise, the monomer-dimer equilibrium changes to favor the formation of dimer as the RM size decreases. We conclude that the effects of the [Fe(CN)₅pyz]3- stability is related to its solvation within the RM.
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Affiliation(s)
- Teofilo Borunda
- Department of Chemistry & Biochemistry, New Mexico State University, Las Cruces, NM 88003, USA.
| | - Alexander J Myers
- Department of Chemistry & Biochemistry, New Mexico State University, Las Cruces, NM 88003, USA.
| | - J Mary Fisher
- Department of Chemistry, Colorado State University, Ft. Collins, CO 80523, USA.
| | - Debbie C Crans
- Department of Chemistry, Colorado State University, Ft. Collins, CO 80523, USA.
| | - Michael D Johnson
- Department of Chemistry & Biochemistry, New Mexico State University, Las Cruces, NM 88003, USA.
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Glycine and metformin as new counter ions for mono and dinuclear vanadium(V)-dipicolinic acid complexes based on the insulin-enhancing anions: Synthesis, spectroscopic characterization and crystal structure. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.10.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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17
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Crans DC, Peters BJ, Wu X, McLauchlan CC. Does anion-cation organization in Na+-containing X-ray crystal structures relate to solution interactions in inhomogeneous nanoscale environments: Sodium-decavanadate in solid state materials, minerals, and microemulsions. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Peters BJ, Groninger AS, Fontes FL, Crick DC, Crans DC. Differences in Interactions of Benzoic Acid and Benzoate with Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:9451-9. [PMID: 27482911 PMCID: PMC6168200 DOI: 10.1021/acs.langmuir.6b02073] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The interaction of benzoic acid and benzoate with model membrane systems was characterized to understand the molecular interactions of the two forms of a simple aromatic acid with the components of the membrane. The microemulsion system based on bis(2-ethylhexyl)sulfosuccinate (AOT) allowed determination of the molecular positioning using 1D NMR and 2D NMR spectroscopic methods. Benzoic acid and benzoate were both found to penetrate the membrane/water interfaces; however, the benzoic acid was able to penetrate much deeper and thus is more readily able to traverse a membrane. The Langmuir monolayer model system, using dipalmitoylphosphatidylcholine, was used as a generic membrane lipid for a cell. Compression isotherms of monolayers demonstrated a pH dependent interaction with a lipid monolayer and confirming the pH dependent observations shown in the reverse micellar model system. These studies provide an explanation for the antimicrobial activity of benzoic acid while benzoate is inactive. Furthermore, these studies form the framework upon which we are investigating the mode of bacterial uptake of pyrazinoic acid, the active form of pyrazinamide, a front line drug used to combat tuberculosis.
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Affiliation(s)
- Benjamin J Peters
- Department of Chemistry, ‡Department of Biochemistry, §Cell and Molecular Biology Program, and ∥Mycobacteria Research Laboratories, Department of Microbiology, Immunology, and Pathology, Colorado State University , Fort Collins, Colorado 80523, United States
| | - Allison S Groninger
- Department of Chemistry, ‡Department of Biochemistry, §Cell and Molecular Biology Program, and ∥Mycobacteria Research Laboratories, Department of Microbiology, Immunology, and Pathology, Colorado State University , Fort Collins, Colorado 80523, United States
| | - Fabio L Fontes
- Department of Chemistry, ‡Department of Biochemistry, §Cell and Molecular Biology Program, and ∥Mycobacteria Research Laboratories, Department of Microbiology, Immunology, and Pathology, Colorado State University , Fort Collins, Colorado 80523, United States
| | - Dean C Crick
- Department of Chemistry, ‡Department of Biochemistry, §Cell and Molecular Biology Program, and ∥Mycobacteria Research Laboratories, Department of Microbiology, Immunology, and Pathology, Colorado State University , Fort Collins, Colorado 80523, United States
| | - Debbie C Crans
- Department of Chemistry, ‡Department of Biochemistry, §Cell and Molecular Biology Program, and ∥Mycobacteria Research Laboratories, Department of Microbiology, Immunology, and Pathology, Colorado State University , Fort Collins, Colorado 80523, United States
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19
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Synthesis and 3D Network Architecture of 1- and 16-Hydrated Salts of 4-Dimethylaminopyridinium Decavanadate, (DMAPH)6[V10O28]·nH2O. CRYSTALS 2016. [DOI: 10.3390/cryst6060065] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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20
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Omri I, Mhiri T, Graia M. A new monohydrogendecavanadate (V)-dihydrogendecavanadate (V) with dibutylammonium cations [C 8 NH 20 ] 9 [H 2 V 10 O 28 ][HV 10 O 28 ].2.13H 2 O: Synthesis, crystal structure, vibrational and optical properties. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2015.12.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Sánchez-Lombardo I, Baruah B, Alvarez S, Werst KR, Segaline NA, Levinger NE, Crans DC. Size and shape trump charge in interactions of oxovanadates with self-assembled interfaces: application of continuous shape measure analysis to the decavanadate anion. NEW J CHEM 2016. [DOI: 10.1039/c5nj01788b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using 51V NMR spectroscopy, dynamic light scattering and continuous shape analysis to characterize two polyoxometalate-encapsulation in reverse micelles.
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Affiliation(s)
| | - Bharat Baruah
- Department of Chemistry
- Colorado State University
- Colorado 80523-1872
- USA
- Department of Chemistry
| | - Santiago Alvarez
- Departament de Química Inorganica
- Institut de Química Teorica i Computacional (IQTCUB)
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - Katarina R. Werst
- Department of Chemistry
- Colorado State University
- Colorado 80523-1872
- USA
| | | | - Nancy E. Levinger
- Department of Chemistry
- Colorado State University
- Colorado 80523-1872
- USA
| | - Debbie C. Crans
- Department of Chemistry
- Colorado State University
- Colorado 80523-1872
- USA
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Ghasemi K, Ghasemi F, Rezvani AR, Graiff C, Notash B. Potential antidiabetic drugs of metformin with insulin-enhancing anions [VO2(dipic)]− and [VO2(dipic-OH)]−: Synthesis, characterization and X-ray crystal structure. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.09.053] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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23
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Insulin-like action of novel metformin-containing vanadate as a new antidiabatic drug: Synthesis, characterization and crystal structure of [Metformin-H]2[V2O6] ]·H2O. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.05.050] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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24
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McLauchlan CC, Peters BJ, Willsky GR, Crans DC. Vanadium–phosphatase complexes: Phosphatase inhibitors favor the trigonal bipyramidal transition state geometries. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.12.012] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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25
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Treviño S, Sánchez-Lara E, Sarmiento-Ortega VE, Sánchez-Lombardo I, Flores-Hernández JÁ, Pérez-Benítez A, Brambila-Colombres E, González-Vergara E. Hypoglycemic, lipid-lowering and metabolic regulation activities of metforminium decavanadate (H2Metf)3 [V10O28]·8H2O using hypercaloric-induced carbohydrate and lipid deregulation in Wistar rats as biological model. J Inorg Biochem 2015; 147:85-92. [PMID: 25920353 DOI: 10.1016/j.jinorgbio.2015.04.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Revised: 04/01/2015] [Accepted: 04/01/2015] [Indexed: 12/14/2022]
Abstract
Because of the increasing global spread of type 2 diabetes mellitus, there is a need to develop new antidiabetic agents. Recently we have synthesized new decavanadates using metformin as counterion. In particular, the compound containing three metforminium dications has been obtained in high yield and has been completely characterized. Biological studies using Wistar rats that have been fed with a high caloric diet inducing insulin resistance and metabolic syndrome were carried out. Results of the impact on key biochemical parameters mediated by metformin alone and the new compound are here presented. The metforminium decavanadate (H2Metf)3[V10O28]·8H2O, abbreviated as Metf-V10O28, was shown to have pharmacological potential as a hypoglycemic, lipid-lowering and metabolic regulator, since the resulting compound made of the two components with antidiabetic activities, reduces both dosage and time of administration (twice a week). Hence, due to the beneficial effects induced by the metforminium decavanadate we recommend to continue the exploration into the mechanism and toxicology of this new compound.
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Affiliation(s)
- Samuel Treviño
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, CP 72570 Puebla, PUE, Mexico
| | - Eduardo Sánchez-Lara
- Centro de Química, ICUAP, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, CP 72570 Puebla, PUE, Mexico
| | - Víctor Enrique Sarmiento-Ortega
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, CP 72570 Puebla, PUE, Mexico
| | - Irma Sánchez-Lombardo
- Centro de Química, ICUAP, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, CP 72570 Puebla, PUE, Mexico
| | - José Ángel Flores-Hernández
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, CP 72570 Puebla, PUE, Mexico
| | - Aarón Pérez-Benítez
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, CP 72570 Puebla, PUE, Mexico
| | - Eduardo Brambila-Colombres
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, CP 72570 Puebla, PUE, Mexico
| | - Enrique González-Vergara
- Centro de Química, ICUAP, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, CP 72570 Puebla, PUE, Mexico.
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26
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Kikukawa Y, Yokoyama T, Kashio S, Hayashi Y. Synthesis and characterization of fluoride-incorporated polyoxovanadates. J Inorg Biochem 2015; 147:221-6. [PMID: 25771147 DOI: 10.1016/j.jinorgbio.2015.02.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 02/17/2015] [Accepted: 02/18/2015] [Indexed: 11/30/2022]
Abstract
The speciation studies of oxovanadates are essential to clarify their biological activities. We surveyed the distribution of oxovanadate species in the presence of halide anions with various acid concentrations in an aqueous mixed-solvent system. The presence of chloride, bromide, and iodide anions has no effects on the appearance of polyoxovanadate species observed in (51)V NMR. Those are the precedent formation of metavanadate species and decavanadates. The presence of fluoride anion during the addition of acids exhibits strong intervention in the polyoxovanadate equilibria and we found the subsequent formation of two polyoxovanadate species by (51)V NMR observation. From the estimated experimental condition, we isolated fluoride-incorporated polyoxovanadates {Et4N}4[V7O19F] and {Et4N}4[HV11O29F2], successfully. Polyanion [V7O19F](4-) is the fluoride-incorporated all V(V) state polyoxovanadate which has two different coordination environments of tetrahedral and square pyramidal vanadium units within the one anionic structural integrity. The structural gap between tetrahedral-unit-based metavanadate and octahedral-unit-based decavanadate structures may be linked by this hybrid complex.
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Affiliation(s)
- Yuji Kikukawa
- Department of Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Taiga Yokoyama
- Department of Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Sanae Kashio
- Department of Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Yoshihito Hayashi
- Department of Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan.
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27
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Potential antidiabetic drug involving a zinc anionic complex of dipic and metformin as counter ions: Synthesis, characterization, crystal structure and electrochemical studies. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.05.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Sánchez-Lombardo I, Sánchez-Lara E, Pérez-Benítez A, Mendoza Á, Bernès S, González-Vergara E. Synthesis of Metforminium(2+) Decavanadates - Crystal Structures and Solid-State Characterization. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402277] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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29
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Levina A, McLeod AI, Kremer LE, Aitken JB, Glover CJ, Johannessen B, Lay PA. Reactivity-activity relationships of oral anti-diabetic vanadium complexes in gastrointestinal media: an X-ray absorption spectroscopic study. Metallomics 2014; 6:1880-8. [PMID: 25100248 DOI: 10.1039/c4mt00146j] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The reactions of oral V(V/IV) anti-diabetic drugs within the gastrointestinal environment (particularly in the presence of food) are a crucial factor that affects their biological activities, but to date these have been poorly understood. In order to build up reactivity-activity relationships, the first detailed study of the reactivities of typical V-based anti-diabetics, Na3V(V)O4 (A), [V(IV)O(OH2)5](SO4) (B), [V(IV)O(ma)2] (C, ma = maltolato(-)) and (NH4)[V(V)(O)2(dipic)] (D, dipic = pyridine-2,5-dicarboxylato(2-)) with simulated gastrointestinal (GI) media in the presence or absence of food components has been performed by the use of XANES (X-ray absorption near edge structure) spectroscopy. Changes in speciation under conditions that simulate interactions in the GI tract have been discerned using correlations of XANES parameters that were based on a library of model V(V), V(IV), and V(III) complexes for preliminary assessment of the oxidation states and coordination numbers. More detailed speciation analyses were performed using multiple linear regression fits of XANES from the model complexes to XANES obtained from the reaction products from interactions with the GI media. Compounds B and D were relatively stable in the gastric environment (pH ∼ 2) in the absence of food, while C was mostly dissociated, and A was converted to [V10O28](6-). Sequential gastric and intestinal digestion in the absence of food converted A, B and D to poorly absorbed tetrahedral vanadates, while C formed five- or six-coordinate V(V) species where the maltolato ligands were likely to be partially retained. XANES obtained from gastric digestion of A-D in the presence of typical food components converged to that of a mixture of V(IV)-aqua, V(IV)-amino acid and V(III)-aqua complexes. Subsequent intestinal digestion led predominantly to V(IV) complexes that were assigned as citrato or complexes with 2-hydroxyacidato donor groups from other organic compounds, including certain carbohydrates. The absence of strong reductants (such as ascorbate) in the food increased the V(V) component in gastrointestinal digestion products. These results can be used to predict the oral bioavailability of various types of V(V/IV) anti-diabetics, and the effects of taking such drugs with food.
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Affiliation(s)
- Aviva Levina
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.
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30
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Aureliano M. Decavanadate contribution to vanadium biochemistry: In vitro and in vivo studies. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.10.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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31
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Chatkon A, Barres A, Samart N, Boyle SE, Haller KJ, Crans DC. Guanylurea metformium double salt of decavanadate, (HGU+)4(HMet+)2(V10O286−)·2H2O. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.12.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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32
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Horton DC, VanDerveer D, Krzystek J, Telser J, Pittman T, Crans DC, Holder AA. Spectroscopic Characterization of L-ascorbic Acid-induced Reduction of Vanadium(V) Dipicolinates: Formation of Vanadium(III) and Vanadium(IV) Complexes from Vanadium(V) Dipicolinate Derivatives. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.12.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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33
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Samart N, Beuning CN, Haller KJ, Rithner CD, Crans DC. Interaction of a biguanide compound with membrane model interface systems: probing the properties of antimalaria and antidiabetic compounds. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:8697-8706. [PMID: 24956022 DOI: 10.1021/la501600s] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Since membrane penetration is important for drug efficacy, how antimalarial precursor material 1-phenylbiguanide (PBG) interacts with an interface was characterized using a reverse micelle (RM) model system. (1)H NMR studies show that PBG partitions across the membrane interface. Specifically, the (1)H NMR studies showed that the 1-phenylbiguanide compound in an aqueous environment changed when placed near an interface. PBG is known to affect hydrogen bonding in water, and as the size of the RMs changes, the water organization in the water pool is changed. The NOESY spectrum of PBG in AOT RM contains cross-peak signals between the PBG protons and AOT protons, which is consistent with the penetration of the PBG into the interface. At the same time, there is a cross peak between the biguanide moiety and the HOD signal. This shows that these NH protons are near the HOD protons, placing the biguanide functional group in the water pool. Preliminary differential FTIR spectroscopic studies confirmed this location. In summary, we found that PBG interacts with different regions of the interface, with the phenyl group penetrating the hydrophobic interface while the biguanide remains in the water pool.
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Affiliation(s)
- Nuttaporn Samart
- School of Chemistry, Institute of Science, Suranaree University of Technology , Nakhon Ratchasima 30000 Thailand
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34
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Xie M, Chen D, Zhang F, Willsky GR, Crans DC, Ding W. Effects of vanadium (III, IV, V)-chlorodipicolinate on glycolysis and antioxidant status in the liver of STZ-induced diabetic rats. J Inorg Biochem 2014; 136:47-56. [DOI: 10.1016/j.jinorgbio.2014.03.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2013] [Revised: 03/23/2014] [Accepted: 03/23/2014] [Indexed: 02/01/2023]
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35
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Sabounchei SJ, Shahriary P, Salehzadeh S, Gholiee Y, Nematollahi D, Chehregani A, Amani A. Gold(iii) complexes of 5-methyl-5-(pyridyl)-2,4-imidazolidenedione: synthesis, physicochemical, theoretical, antibacterial, and cytotoxicity investigation. NEW J CHEM 2014. [DOI: 10.1039/c3nj01042b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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36
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Putrevu NR, Doedens RJ, Khan MI. Decavanadate with a novel coordination complex: Synthesis and characterization of (NH4)2[Ni(H2O)5(NH3)]2(V10O28)·4H2O. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2013.10.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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37
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Crans DC, Woll KA, Prusinskas K, Johnson MD, Norkus E. Metal speciation in health and medicine represented by iron and vanadium. Inorg Chem 2013; 52:12262-75. [PMID: 24041403 DOI: 10.1021/ic4007873] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The influence of metals in biology has become more and more apparent within the past century. Metal ions perform essential roles as critical scaffolds for structure and as catalysts in reactions. Speciation is a key concept that assists researchers in investigating processes that involve metal ions. However, translation of the essential area across scientific fields has been plagued by language discrepancies. To rectify this, the IUPAC Commission provided a framework in which speciation is defined as the distribution of species. Despite these attempts, contributions from inorganic chemists to the area of speciation have not fully materialized in part because the past decade's contributions focused on technological advances, which are not yet to the stage of measuring speciation distribution in biological solutions. In the following, we describe how speciation influences the area of metals in medicine and how speciation distribution has been characterized so far. We provide two case studies as an illustration, namely, vanadium and iron. Vanadium both has therapeutic importance and is known as a cofactor for metalloenzymes. In addition to being a cation, vanadium(V) has analogy with phosphorus and as such is a potent inhibitor for phosphorylases. Because speciation can change the metal's existence in cationic or anionic forms, speciation has profound effects on biological systems. We also highlight how speciation impacts iron metabolism, focusing on the rather low abundance of biologically relevant iron cation that actually exists in biological fluids. fluids. Furthermore, we point to recent investigations into the mechanism of Fenton chemistry, and that the emerging results show pH dependence. The studies suggest formation of Fe(IV)-intermediates and that the generally accepted mechanism may only apply at low pH. With broader recognition toward biological speciation, we are confident that future investigations on metal-based systems will progress faster and with significant results. Studying metal complexes to explore the properties of a potential "active species" and further uncovering the details associated with their specific composition and geometry are likely to be important to the action.
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Affiliation(s)
- Debbie C Crans
- Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523, United States
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