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Pantcheva I, Petkov N, Encheva E, Kolev S, Simova S, Tsanev A, Dorkov P, Ugrinov A. Heteronuclear Complexes of Hg(II) and Zn(II) with Sodium Monensinate as a Ligand. Molecules 2024; 29:3106. [PMID: 38999058 PMCID: PMC11243498 DOI: 10.3390/molecules29133106] [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: 05/18/2024] [Revised: 06/27/2024] [Accepted: 06/27/2024] [Indexed: 07/14/2024] Open
Abstract
The commercial veterinary antibiotic sodium monensinate (MonNa) binds mercury(II) or zinc(II) cations as thiocyanate [Hg(MonNa)2(SCN)2] (1) or isothiocyanate [Zn(MonNa)2(NCS)2] (2) neutral coordination compounds. The structure and physicochemical properties of 1 and 2 were evaluated by the methods of single crystal and/or powder X-ray diffraction, infrared, nuclear magnetic resonance, X-ray photoelectron spectroscopies, and electrospray-mass spectrometry. The primary cores of the two complexes comprise HgS2O2 (1) and ZnN2O2 (2) coordination motifs, respectively, due to the ambidentate binding modes of the SCN-ligands. The directly bound oxygen atoms originate from the carboxylate function of the parent antibiotic. Sodium cations remain in the hydrophilic cavity of monensin and cannot be replaced by the competing divalent metal ions. Zinc(II) binding does not influence the monensin efficacy in the case of Bacillus cereus and Staphylococcus aureus whereas the antimicrobial assay reveals the potential of complex 2 as a therapeutic candidate for the treatment of infections caused by Bacillus subtilis, Kocuria rhizophila, and Staphylococcus saprophyticus.
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Affiliation(s)
- Ivayla Pantcheva
- Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, 1164 Sofia, Bulgaria; (E.E.); (S.K.)
| | - Nikolay Petkov
- Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, 1164 Sofia, Bulgaria; (E.E.); (S.K.)
| | - Elzhana Encheva
- Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, 1164 Sofia, Bulgaria; (E.E.); (S.K.)
- Institute of Physical Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Stiliyan Kolev
- Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, 1164 Sofia, Bulgaria; (E.E.); (S.K.)
| | - Svetlana Simova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
| | - Aleksandar Tsanev
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
| | - Petar Dorkov
- Research and Development Department, Biovet Ltd., 4550 Peshtera, Bulgaria;
| | - Angel Ugrinov
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108-6050, USA;
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Ruskin J, Sachs RK, Wang M, Dekeyser R, Lew Z, Williams P, Hwang H, Majumdar A, Dudding T, Lectka T. Metal Ion-Induced Large Fragment Deactivation: A Different Strategy for Site-Selectivity in a Complex Molecule. Angew Chem Int Ed Engl 2024; 63:e202317070. [PMID: 38063469 DOI: 10.1002/anie.202317070] [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: 11/09/2023] [Indexed: 12/23/2023]
Abstract
Complex natural product functionalizations generally involve the use of highly engineered reagents, catalysts, or enzymes to react exclusively at a desired site through lowering of a select transition state energy. In this communication, we report a new, complementary strategy in which all transition states representing undesirable sites in a complex ionophore substrate are simultaneously energetically increased through the chelation of a metal ion to the large fragment we wish to neutralize. In the case of an electrophilic, radical based fluorination reaction, charge repulsion (electric field effects), induced steric effects, and electron withdrawal provide the necessary deactivation and proof of principle to afford a highly desirable natural product derivative. We envisage that many other electrophilic or charge based synthetic methods may be amenable to this approach as well.
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Affiliation(s)
- Jonah Ruskin
- Department of Chemistry, Johns Hopkins University, 3400N. Charles St, Baltimore, MD 21218, USA
| | - Roseann K Sachs
- Department of Chemistry and Biochemistry, Messiah University, One University Avenue, Mechanicsburg, PA 17055, USA
| | - Muyuan Wang
- Department of Chemistry, Johns Hopkins University, 3400N. Charles St, Baltimore, MD 21218, USA
| | - Roxanne Dekeyser
- Department of Chemistry, Brock University, St. Catharines, Ontario, L2S3A1, Canada
| | - Zachary Lew
- Department of Chemistry, Johns Hopkins University, 3400N. Charles St, Baltimore, MD 21218, USA
| | - Phoebe Williams
- Department of Chemistry, Johns Hopkins University, 3400N. Charles St, Baltimore, MD 21218, USA
| | - Habin Hwang
- Department of Chemistry, Johns Hopkins University, 3400N. Charles St, Baltimore, MD 21218, USA
| | - Ananya Majumdar
- Department of Chemistry, Johns Hopkins University, 3400N. Charles St, Baltimore, MD 21218, USA
| | - Travis Dudding
- Department of Chemistry, Brock University, St. Catharines, Ontario, L2S3A1, Canada
| | - Thomas Lectka
- Department of Chemistry, Johns Hopkins University, 3400N. Charles St, Baltimore, MD 21218, USA
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Chen L, Jiang P, Shen X, Lyu J, Liu C, Li L, Huang Y. Cascade Delivery to Golgi Apparatus and On-Site Formation of Subcellular Drug Reservoir for Cancer Metastasis Suppression. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2204747. [PMID: 36585358 DOI: 10.1002/smll.202204747] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 12/07/2022] [Indexed: 06/17/2023]
Abstract
As the foremost cause of cancer-related death, metastasis consists of three steps: invasion, circulation, and colonization. Only targeting one single phase of the metastasis cascade may be insufficient since there are many alternative routes for tumor cells to disseminate. Here, to target the whole cascade of metastasis, hybrid erythrocyte and tumor cell membrane-coated nanoparticle (Hyb-NP) is designed with dual functions of increasing circulation time and recognizing primary, circulating, and colonized tumors. After loading with monensin, a recently reported metastasis inhibitor, the delivery system profoundly reduces spontaneous metastasis in an orthotopic breast cancer model. Underlying mechanism studies reveal that Hyb-NP can deliver monensin to its action site in the Golgi apparatus, and in return, monensin can block the exocytosis of Hyb-NP from the Golgi apparatus, forming a reservoir-like subcellular structure. Notably, the Golgi apparatus reservoir displays three vital functions for suppressing metastasis initialization, including enhanced subcellular drug retention, metastasis-related cytokine release inhibition, and directional migration inhibition. Collectively, based on metastasis cascade targeting at the tissue level, further formation of the Golgi apparatus drug reservoir at the subcellular level provides a potential therapeutic strategy for cancer metastasis suppression.
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Affiliation(s)
- Liqiang Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Peihang Jiang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Xinran Shen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Jiayan Lyu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Chendong Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Lian Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Yuan Huang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
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Dudev T, Cheshmedzhieva D, Dorkov P, Pantcheva I. A DFT/PCM Study on the Affinity of Salinomycin to Bind Monovalent Metal Cations. Molecules 2022; 27:532. [PMID: 35056843 PMCID: PMC8779476 DOI: 10.3390/molecules27020532] [Citation(s) in RCA: 2] [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: 12/23/2021] [Revised: 01/08/2022] [Accepted: 01/11/2022] [Indexed: 11/29/2022] Open
Abstract
The affinity of the polyether ionophore salinomycin to bind IA/IB metal ions was accessed using the Gibbs free energy of the competition reaction between SalNa (taken as a reference) and its rival ions: [M+-solution] + [SalNa] → [SalM] + [Na+-solution] (M = Li, K, Rb, Cs, Cu, Ag, Au). The DFT/PCM computations revealed that the ionic radius, charge density and accepting ability of the competing metal cations, as well as the dielectric properties of the solvent, have an influence upon the selectivity of salinomycin. The optimized structures of the monovalent metal complexes demonstrate the flexibility of the ionophore, allowing the coordination of one or two water ligands in SalM-W1 and SalM-W2, respectively. The metal cations are responsible for the inner coordination sphere geometry, with coordination numbers spread between 2 (Au+), 4 (Li+ and Cu+), 5/6 (Na+, K+, Ag+), 6/7 (Rb+) and 7/8 (Cs+). The metals' affinity to salinomycin in low-polarity media follows the order of Li+ > Cu+ > Na+ > K+ > Au+ > Ag+ > Rb+ > Cs+, whereas some derangement takes place in high-dielectric environment: Li+ ≥ Na+ > K+ > Cu+ > Au+ > Ag+ > Rb+ > Cs+.
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Affiliation(s)
- Todor Dudev
- Laboratory of Computational Chemistry and Spectroscopy, Faculty of Chemistry and Pharmacy, “St. Kl. Ohridski” University of Sofia, 1164 Sofia, Bulgaria;
| | - Diana Cheshmedzhieva
- Laboratory of Computational Chemistry and Spectroscopy, Faculty of Chemistry and Pharmacy, “St. Kl. Ohridski” University of Sofia, 1164 Sofia, Bulgaria;
| | - Peter Dorkov
- Research & Development Department, Biovet Ltd., 4550 Peshtera, Bulgaria;
| | - Ivayla Pantcheva
- Laboratory of Biocoordination and Bioanalytical Chemistry, Faculty of Chemistry and Pharmacy, “St. Kl. Ohridski” University of Sofia, 1164 Sofia, Bulgaria
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Dudev T, Cheshmedzhieva D, Dimitrova R, Dorkov P, Pantcheva I. Factors governing the competition between group IA and IB cations for monensin A: a DFT/PCM study. RSC Adv 2020; 10:5734-5741. [PMID: 35497416 PMCID: PMC9049293 DOI: 10.1039/c9ra09784h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 01/29/2020] [Indexed: 01/01/2023] Open
Abstract
The results obtained suggest that the metal selectivity of monensin can be modulated by changing the solvents used.
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Affiliation(s)
- Todor Dudev
- Laboratory of Computational Chemistry and Spectroscopy
- Faculty of Chemistry and Pharmacy
- “St. Kl. Ohridski” University of Sofia
- 1164 Sofia
- Bulgaria
| | - Diana Cheshmedzhieva
- Laboratory of Computational Chemistry and Spectroscopy
- Faculty of Chemistry and Pharmacy
- “St. Kl. Ohridski” University of Sofia
- 1164 Sofia
- Bulgaria
| | - Radoslava Dimitrova
- Laboratory of Biocoordination and Bioanalytical Chemistry
- Faculty of Chemistry and Pharmacy
- “St. Kl. Ohridski” University of Sofia
- 1164 Sofia
- Bulgaria
| | - Peter Dorkov
- Biovet Ltd
- Research & Development Department
- Peshtera
- Bulgaria
| | - Ivayla Pantcheva
- Laboratory of Biocoordination and Bioanalytical Chemistry
- Faculty of Chemistry and Pharmacy
- “St. Kl. Ohridski” University of Sofia
- 1164 Sofia
- Bulgaria
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Benzo-15-crown-5 (2,3,5,6,8,9,11,12-octahydrobenzo[b][1,4,7,10,13]pentaoxacyclopentadecine) and dibenzo-15-crown-5 (6,7,9,10,17,18-hexahydrodibenzo[b,h][1,4,7,10,13]pentaoxacyclopentadecine as fluorescent probes for physiologically important potassium ion. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.11.052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Zhan C, Han Z, Patrick BO, Gates DP. 2-Aminophenolate ligands for phosphorus(v): a lithium salt featuring the chiral [P(OC 6H 4NR) 3] - anion. Dalton Trans 2018; 47:12118-12129. [PMID: 30065977 DOI: 10.1039/c8dt02522c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Phosphoranes P(OC6H4NR)2(OC6H4NHR) [R = Me (2a), Ph (2b), C6F5 (2c)] were synthesized by treating PCl5 with the respective 2-aminophenol derivative (1a-c, 3.1 equiv.). In one instance, an intermediate species, P(OC6H4NR)2Cl [R = Me (3a)], was isolated and structurally characterized. Deprotonation of the amine moieties (-NH[combining low line]R) in phosphoranes 2a and 2b with a strong alkali-metal base (e.g. n-BuLi) in the presence of a strong-donor solvent (e.g. THF) afforded salts composed of the hexacoordinate P(v)-anions [P(OC6H4NR)3]- (R = Me, [4a]-; Ph, [4b]-). Employing precursor 2a, the salt Li(THF)3fac-[4a]- was isolated. The X-ray crystal of each enantiomer of [4a]- was determined and, to our knowledge, represents the first structurally characterized example of a salt containing a hexacoordinate P(v)N3O3 anion featuring P(v)-N bonds.
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Affiliation(s)
- Chuantian Zhan
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, CanadaV6T 1Z1.
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8
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Klejborowska G, Maj E, Wietrzyk J, Stefańska J, Huczyński A. One-pot synthesis and antiproliferative activity of novel double-modified derivatives of the polyether ionophore monensin A. Chem Biol Drug Des 2018; 92:1537-1546. [PMID: 29722203 DOI: 10.1111/cbdd.13320] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 03/08/2018] [Accepted: 04/16/2018] [Indexed: 11/27/2022]
Abstract
Monensin A (MON) is a polyether ionophore antibiotic, which shows a wide spectrum of biological activity. New MON derivatives such as double-modified ester-carbonates and double-modified amide-carbonates were obtained by a new and efficient one-pot synthesis with triphosgene as the activating reagent and the respective alcohol or amine. All new derivatives were tested for their antiproliferative activity against two drug-sensitive (MES-SA, LoVo) and two drug-resistant (MES-SA/DX5, LoVo/DX) cancer cell lines, and were also studied for their antimicrobial activity against different Staphylococcus aureus and Staphylococcus epidermidis bacterial strains. For the first time, the activity of MON and its derivatives against MES-SA and MES-SA/DX5 were evaluated.
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Affiliation(s)
| | - Ewa Maj
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Joanna Wietrzyk
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Joanna Stefańska
- Department of Pharmaceutical Microbiology, Medical University of Warsaw, Warsaw, Poland
| | - Adam Huczyński
- Faculty of Chemistry, Adam Mickiewicz University, Poznan, Poland
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Nedzhib A, Kessler J, Bouř P, Gyurcsik B, Pantcheva I. Circular Dichroism is Sensitive to Monovalent Cation Binding in Monensin Complexes. Chirality 2016; 28:420-8. [PMID: 27062535 DOI: 10.1002/chir.22597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 02/23/2016] [Accepted: 02/25/2016] [Indexed: 11/08/2022]
Abstract
Monensin is a natural antibiotic that exhibits high affinity to certain metal ions. In order to explore its potential in coordination chemistry, circular dichroism (CD) spectra of monensic acid A (MonH) and its derivatives containing monovalent cations (Li(+) , Na(+) , K(+) , Rb(+) , Ag(+) , and Et4 N(+) ) in methanolic solutions were measured and compared to computational models. Whereas the conventional CD spectroscopy allowed recording of the transitions down to 192 nm, synchrotron radiation circular dichroism (SRCD) revealed other bands in the 178-192 nm wavelength range. CD signs and intensities significantly varied in the studied compounds, in spite of their similar crystal structure. Computational modeling based on the Density Functional Theory (DFT) and continuum solvent model suggests that the solid state monensin structure is largely conserved in the solutions as well. Time-dependent Density Functional Theory (TDDFT) simulations did not allow band-to-band comparison with experimental spectra due to their limited precision, but indicated that the spectral changes were caused by a combination of minor conformational changes upon the monovalent cation binding and a direct involvement of the metal electrons in monensin electronic transitions. Both the experiment and simulations thus show that the CD spectra of monensin complexes are very sensitive to the captured ions and can be used for their discrimination. Chirality 28:420-428, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Ahmed Nedzhib
- Department of Analytical Chemistry, Faculty of Chemistry and Pharmacy, Sofia University "St. Kl. Ohridski,", Sofia, Bulgaria
| | - Jiří Kessler
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences, Prague, Czech Republic
| | - Petr Bouř
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences, Prague, Czech Republic
| | - Béla Gyurcsik
- Department of Inorganic and Analytical Chemistry, University of Szeged, Szeged, Hungary
| | - Ivayla Pantcheva
- Department of Analytical Chemistry, Faculty of Chemistry and Pharmacy, Sofia University "St. Kl. Ohridski,", Sofia, Bulgaria
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Rutkowski J, Brzezinski B. Structures and properties of naturally occurring polyether antibiotics. BIOMED RESEARCH INTERNATIONAL 2013; 2013:162513. [PMID: 23586016 PMCID: PMC3613094 DOI: 10.1155/2013/162513] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 12/12/2012] [Accepted: 01/04/2013] [Indexed: 11/29/2022]
Abstract
Polyether ionophores represent a large group of natural, biologically active substances produced by Streptomyces spp. They are lipid soluble and able to transport metal cations across cell membranes. Several of polyether ionophores are widely used as growth promoters in veterinary. Polyether antibiotics show a broad spectrum of bioactivity ranging from antibacterial, antifungal, antiparasitic, antiviral, and tumour cell cytotoxicity. Recently, it has been shown that some of these compounds are able to selectively kill cancer stem cells and multidrug-resistant cancer cells. Thus, they are recognized as new potential anticancer drugs. The biological activity of polyether ionophores is strictly connected with their molecular structure; therefore, the purpose of this paper is to present an overview of their formula, molecular structure, and properties.
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Affiliation(s)
- Jacek Rutkowski
- Department of Biochemistry, Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland.
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Structure and antimicrobial properties of monensin A and its derivatives: summary of the achievements. BIOMED RESEARCH INTERNATIONAL 2013; 2013:742149. [PMID: 23509771 PMCID: PMC3586448 DOI: 10.1155/2013/742149] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 12/15/2012] [Accepted: 12/29/2012] [Indexed: 11/30/2022]
Abstract
In this paper structural and microbiological studies on the ionophorous antibiotic monensin A and its derivatives have been collected. Monensin A is an ionophore which selectively complexes and transports sodium cation across lipid membranes, and therefore it shows a variety of biological properties. This antibiotic is commonly used as coccidiostat and nonhormonal growth promoter. The paper focuses on both the latest and earlier achievements concerning monensin A antimicrobial activity. The activities of monensin derivatives, including modifications of hydroxyl groups and carboxyl group, are also presented.
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Structure of 1:1 complex of 1-naphthylmethyl ester of monensin A with sodium perchlorate studied by X-ray, FT-IR and ab initio methods. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.03.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Huczyński A, Janczak J, Łowicki D, Brzezinski B. Monensin A acid complexes as a model of electrogenic transport of sodium cation. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2012; 1818:2108-19. [DOI: 10.1016/j.bbamem.2012.04.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Revised: 04/17/2012] [Accepted: 04/23/2012] [Indexed: 11/25/2022]
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Structural investigation of a new complex of N-allylamide of Monensin A with strontium perchlorate using X-ray, FT-IR, ESI MS and semiempirical methods. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.03.024] [Citation(s) in RCA: 8] [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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15
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Łowicki D, Huczyński A, Brzezinski B, Bartl F. 1H, 13C NMR, FT-IR, ESI MS and PM5 studies of a new 3,6,9-trioxadecylamide of monensin A and its complexes with Li+, Na+ and K+ cations. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.01.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Huczyński A, Ratajczak-Sitarz M, Stefańska J, Katrusiak A, Brzezinski B, Bartl F. Reinvestigation of the structure of monensin A phenylurethane sodium salt based on X-ray crystallographic and spectroscopic studies, and its activity against hospital strains of methicillin-resistant S. epidermidis and S. aureus. J Antibiot (Tokyo) 2011; 64:249-56. [PMID: 21224863 DOI: 10.1038/ja.2010.167] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Monensin A phenylurethane sodium salt (MON-UR1-Na) crystals were studied by the X-ray, NMR, FT-IR and PM5 semi-empirical methods. The X-ray data show that the compound forms a pseudocyclic structure, stabilized by three intramolecular hydrogen bonds, and the sodium cation coordinated by five oxygen atoms in the hydrophilic sphere. The NMR and FT-IR data demonstrate that this pseudocyclic structure is also conserved in CH(2)Cl(2) solution. This structure of MON-UR1-Na is significantly different than the ones previously proposed by Westley et al. and Tanaka et al. The semi-empirical calculations of the MON-UR1-Na structures indicate that the one of the crystal is the most energetically favorable one. Other parameters, such as the size, chemical and biological nature of the urethane substituent, and especially the free carbonyl urethane group, may have a role in the biological activity of MON-UR1-Na. The in vitro microbiological tests provide evidence that MON-UR1-Na shows higher antibacterial activity against human pathogenic bacteria, including antibiotic-resistant Staphylococcus aureus and Staphylococcus epidermidis than the parent unmodified antibiotic-Monensin A.
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Affiliation(s)
- Adam Huczyński
- Faculty of Chemistry, Adam Mickiewicz University, Poznan, Poland.
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Huczyński A, Janczak J, Brzezinski B. Crystal structure and FT-IR study of aqualithium 1-naphthylmethyl ester of monensin A perchlorate. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2010.10.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Crystal structures and spectral properties of new Cd(II) and Hg(II) complexes of monensic acid with different coordination modes of the ligand. OPEN CHEM 2010. [DOI: 10.2478/s11532-010-0067-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractThe single crystal X-ray structures and the spectroscopic properties of complexes of monensic acid (C36H62O11·H2O) with toxic metal ions of Cd(II) and Hg(II) are discussed. The cadmium(II) complex (1) is of composition [Cd(C36H61O11)2(H2O)2] and crystallizes in the monoclinic system (space group P2(1), Z = 2) with a = 12.4090(8), b = 24.7688(16), c = 14.4358(11) Å, β = 91.979(7)°. Two ligand monoanions are bound in a bidentate coordination mode to Cd(II) via the carboxylate and the primary hydroxyl oxygens occupying the equatorial plane of the complex. The axial positions of the inner coordination sphere of Cd(II) are filled by two water molecules additionally engaged in intramolecular hydrogen bonds. The Hg(II) complex (2), [Hg(C36H60O11)(H2O)], crystallizes in the orthorhombic system (space group P2(1)2(1)2(1), Z = 4) with a = 12.7316(2), b = 16.4379(3), c = 18.7184(4) Å. The monensic acid reacts with Hg(II) in a tetradentate coordination manner via both oxygen atoms of the carboxylate function and oxygens of two hydroxyl groups. The twofold negative charge of the ligand is achieved by deprotonation of carboxylic and secondary hydroxyl groups located at the opposite ends of the molecule. Hg(II) is surrounded by five oxygen atoms in a distorted square pyramidal molecular geometry.
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Pantcheva IN, Ivanova J, Zhorova R, Mitewa M, Simova S, Mayer-Figge H, Sheldrick WS. Nickel(II) and zinc(II) dimonensinates: Single crystal X-ray structure, spectral properties and bactericidal activity. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.02.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Pantcheva IN, Zhorova R, Mitewa M, Simova S, Mayer-Figge H, Sheldrick WS. First solid state alkaline-earth complexes of monensic acid A (MonH): crystal structure of [M(Mon)2(H (2)O)2] (M = Mg, Ca), spectral properties and cytotoxicity against aerobic Gram-positive bacteria. Biometals 2009; 23:59-70. [PMID: 19768636 DOI: 10.1007/s10534-009-9269-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Accepted: 09/03/2009] [Indexed: 11/26/2022]
Abstract
Alkaline-earth metal complexes of the monoanionic form of the polyether ionophore monensin A were isolated for the first time in solid state and were structurally characterized using various spectroscopic methods (IR, NMR, FAB-MS). The stoichiometric reaction of monensic acid (MonH) with M(2+) (M = Mg, Ca) in the presence of an organic base leads to the formation of mononuclear complexes of composition [M(Mon)(2)(H(2)O)(2)]. The structures of magnesium (1) and calcium (2) monensin complexes in the solid state were established by single crystal X-ray crystallography. The complexes crystallize as [Mg(Mon)(2)(H(2)O)(2)]x5MeCN (1) and [Ca(Mon)(2)(H(2)O)(2)]xH(2)Ox5MeCN (2) in the monoclinic P21 space group. The alkaline-earth metal ion is placed in a distorted octahedral environment, defined by two monensin anions acting as bidentate ligands in the equatorial plane of the complex as well as by two water molecules occupying the axial positions of the inner coordination sphere. The bactericidal activity of 1 and 2 was evaluated against aerobic Gram-positive microorganisms applying the double layer agar hole diffusion method.
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Affiliation(s)
- Ivayla N Pantcheva
- Laboratory on Biocoordination and Bioanalytical Chemistry, Department of Analytical Chemistry, Faculty of Chemistry, Sofia University, 1164 Sofia, Bulgaria.
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Łowicki D, Huczyński A, Stefańska J, Brzezinski B. Syntheses, structural and antimicrobial studies of a new N-allylamide of monensin A and its complexes with monovalent metal cations. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.06.077] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Structural and antimicrobial studies of a new N-phenylamide of monensin A complex with sodium chloride. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2009.01.056] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Huczyński A, Wawrzyn R, Brzezinski B, Bartl F. Structure of complexes of lasalocid m-nitrobenzyl ester with monovalent metal cations. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2008.01.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Huczyński A, Ratajczak-Sitarz M, Katrusiak A, Brzezinski B. Molecular structure of rubidium six-coordinated dihydrate complex with monensin A. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.12.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Synthesis of new semi-synthetic dipodands and tripodands from naturally occurring polyether ionophores. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.06.116] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Huczyński A, Brzezinski B, Bartl F. Structures of complexes of benzyl and allyl esters of monensin A with Mg2+, Ca2+, Sr2+, Ba2+ cations studied by ESI-MS and PM5 methods. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.10.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Huczyński A, Pospieszny T, Wawrzyn R, Ratajczak-Sitarz M, Katrusiak A, Brzezinski B, Bartl F. Structural and spectroscopic studies of new o-, m- and p-nitrobenzyl esters of lasalocid acid. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.07.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Huczyński A, Stefańska J, Przybylski P, Brzezinski B, Bartl F. Synthesis and antimicrobial properties of monensin A esters. Bioorg Med Chem Lett 2008; 18:2585-9. [PMID: 18375122 DOI: 10.1016/j.bmcl.2008.03.038] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2008] [Revised: 03/12/2008] [Accepted: 03/14/2008] [Indexed: 11/25/2022]
Abstract
The esters (2-10) of the ionophore antibiotic Monensin (1) were synthesized by four different methods, which are discussed in detail. These new esters were characterized by various spectroscopic techniques and subsequently tested in the face of their antimicrobial properties. Three derivatives (3, 8 and 10) showed activity against Gram-positive bacteria. Additionally derivative (10) exhibited a relatively low antifungal activity against Candida in contrast to Monensin A.
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Affiliation(s)
- Adam Huczyński
- Faculty of Chemistry, A. Mickiewicz University, Grunwaldzka 6, 60-780 Poznan, Poland
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Huczyński A, Pospieszny T, Ratajczak-Sitarz M, Katrusiak A, Brzezinski B. Structural and spectroscopic studies of the 1:1 complex of lasalocid acid with 1,5,7-triazabicyclo[4.4.0]dec-5-ene. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.05.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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