1
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Ndugire W, Truong D, Hasitha Raviranga NG, Lao J, Ramström O, Yan M. Turning on the Antimicrobial Activity of Gold Nanoclusters Against Multidrug-Resistant Bacteria. Angew Chem Int Ed Engl 2023; 62:e202214086. [PMID: 36642692 PMCID: PMC10356176 DOI: 10.1002/anie.202214086] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 01/05/2023] [Accepted: 01/12/2023] [Indexed: 01/17/2023]
Abstract
In this work, we show that the addition of thiourea (TU) initiated broad-spectrum antimicrobial activity of otherwise inactive D-maltose-capped gold nanoclusters (AuNC-Mal). For example, AuNC-Mal/TU was effective against multidrug-resistant Pseudomonas aeruginosa with a minimum inhibitory concentration (MIC) of 1 μg mL-1 (2.5 μM [Au]) while having 30-60 times lower in vitro cytotoxicity against mammalian cells. The reaction of AuNC-Mal and TU generated the antimicrobial species of [Au(TU)2 ]+ and smaller AuNCs. TU increased the accumulation of Au in bacteria and helped maintain the oxidation state as AuI (vs. AuIII ). The modes of action included the inhibition of thioredoxin reductase, interference with the CuI regulation and depletion of ATP. Moreover, the antimicrobial activity did not change in the presence of colistin or carbonyl cyanide 3-chlorophenylhydrazone, suggesting that AuNC-Mal/TU was indifferent to the outer membrane barrier and to bacterial efflux pumps.
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Affiliation(s)
- William Ndugire
- Department of Chemistry, University of Massachusetts Lowell, One University Ave., Lowell, MA-01854, USA
| | - Dang Truong
- Department of Chemistry, University of Massachusetts Lowell, One University Ave., Lowell, MA-01854, USA
| | - N G Hasitha Raviranga
- Department of Chemistry, University of Massachusetts Lowell, One University Ave., Lowell, MA-01854, USA
| | - Jingzhe Lao
- Department of Chemistry, University of Massachusetts Lowell, One University Ave., Lowell, MA-01854, USA
| | - Olof Ramström
- Department of Chemistry, University of Massachusetts Lowell, One University Ave., Lowell, MA-01854, USA
- Department of Chemistry and Biomedical Sciences, Linnaeus University, 39182, Kalmar, Sweden
| | - Mingdi Yan
- Department of Chemistry, University of Massachusetts Lowell, One University Ave., Lowell, MA-01854, USA
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2
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The Cytotoxic Effect of Copper (II) Complexes with Halogenated 1,3-Disubstituted Arylthioureas on Cancer and Bacterial Cells. Int J Mol Sci 2021; 22:ijms222111415. [PMID: 34768844 PMCID: PMC8584173 DOI: 10.3390/ijms222111415] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/16/2021] [Accepted: 10/19/2021] [Indexed: 12/12/2022] Open
Abstract
A series of eight copper (II) complexes with 3-(4-chloro-3-nitrophenyl)thiourea were designed and synthesized. The cytotoxic activity of all compounds was assessed in three human cancer cell lines (SW480, SW620, PC3) and human normal keratinocytes (HaCaT). The complexes 1, 3, 5, 7 and 8 were cytotoxic to the studied tumor cells in the low micromolar range, without affecting the normal cells. The complexes 1, 3, 7 and 8 induced lactate dehydrogenase (LDH) release in all cancer cell lines, but not in the HaCaT cells. They provoked early apoptosis in pathological cells, especially in SW480 and PC3 cells. The ability of compounds 1, 3, 7 and 8 to diminish interleukin-6 (IL-6) concentration in a cell was established. For the first time, the influence of the most promising Cu (II) complexes on intensities of detoxifying and reactive oxygen species (ROS) scavenging the enzymes of tumor cells was studied. The cytotoxic effect of all copper (II) conjugates against standard and hospital bacterial strains was also proved.
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3
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Sousa SA, Feliciano JR, Pita T, Soeiro CF, Mendes BL, Alves LG, Leitão JH. Bacterial Nosocomial Infections: Multidrug Resistance as a Trigger for the Development of Novel Antimicrobials. Antibiotics (Basel) 2021; 10:antibiotics10080942. [PMID: 34438992 PMCID: PMC8389044 DOI: 10.3390/antibiotics10080942] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 07/23/2021] [Accepted: 07/30/2021] [Indexed: 11/17/2022] Open
Abstract
Nosocomial bacterial infections are associated with high morbidity and mortality, posing a huge burden to healthcare systems worldwide. The ongoing COVID-19 pandemic, with the raised hospitalization of patients and the increased use of antimicrobial agents, boosted the emergence of difficult-to-treat multidrug-resistant (MDR) bacteria in hospital settings. Therefore, current available antibiotic treatments often have limited or no efficacy against nosocomial bacterial infections, and novel therapeutic approaches need to be considered. In this review, we analyze current antibacterial alternatives under investigation, focusing on metal-based complexes, antimicrobial peptides, and antisense antimicrobial therapeutics. The association of new compounds with older, commercially available antibiotics and the repurposing of existing drugs are also revised in this work.
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Affiliation(s)
- Sílvia A. Sousa
- Department of Bioengineering, IBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (J.R.F.); (T.P.); (C.F.S.); (B.L.M.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Correspondence: (S.A.S.); (J.H.L.); Tel.: +351-218417688 (J.H.L.)
| | - Joana R. Feliciano
- Department of Bioengineering, IBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (J.R.F.); (T.P.); (C.F.S.); (B.L.M.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Tiago Pita
- Department of Bioengineering, IBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (J.R.F.); (T.P.); (C.F.S.); (B.L.M.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Catarina F. Soeiro
- Department of Bioengineering, IBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (J.R.F.); (T.P.); (C.F.S.); (B.L.M.)
| | - Beatriz L. Mendes
- Department of Bioengineering, IBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (J.R.F.); (T.P.); (C.F.S.); (B.L.M.)
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - Luis G. Alves
- Centro de Química Estrutural, Associação do Instituto Superior Técnico para a Investigação e Desenvolvimento, 1049-003 Lisboa, Portugal;
| | - Jorge H. Leitão
- Department of Bioengineering, IBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (J.R.F.); (T.P.); (C.F.S.); (B.L.M.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Correspondence: (S.A.S.); (J.H.L.); Tel.: +351-218417688 (J.H.L.)
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4
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Prencipe F, Zanfardino A, Di Napoli M, Rossi F, D’Errico S, Piccialli G, Mangiatordi GF, Saviano M, Ronga L, Varcamonti M, Tesauro D. Silver (I) N-Heterocyclic Carbene Complexes: A Winning and Broad Spectrum of Antimicrobial Properties. Int J Mol Sci 2021; 22:ijms22052497. [PMID: 33801394 PMCID: PMC7958610 DOI: 10.3390/ijms22052497] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 11/16/2022] Open
Abstract
The evolution of antibacterial resistance has arisen as the main downside in fighting bacterial infections pushing researchers to develop novel, more potent and multimodal alternative drugs.Silver and its complexes have long been used as antimicrobial agents in medicine due to the lack of silver resistance and the effectiveness at low concentration as well as to their low toxicities compared to the most commonly used antibiotics. N-Heterocyclic Carbenes (NHCs) have been extensively employed to coordinate transition metals mainly for catalytic chemistry. However, more recently, NHC ligands have been applied as carrier molecules for metals in anticancer applications. In the present study we selected from literature two NHC-carbene based on acridinescaffoldand detailed nonclassicalpyrazole derived mono NHC-Ag neutral and bis NHC-Ag cationic complexes. Their inhibitor effect on bacterial strains Gram-negative and positivewas evaluated. Imidazolium NHC silver complex containing the acridine chromophore showed effectiveness at extremely low MIC values. Although pyrazole NHC silver complexes are less active than the acridine NHC-silver, they represent the first example of this class of compounds with antimicrobial properties. Moreover all complexesare not toxic and they show not significant activity againstmammalian cells (Hek lines) after 4 and 24 h. Based on our experimental evidence, we are confident that this promising class of complexes could represent a valuable starting point for developing candidates for the treatment of bacterial infections, delivering great effectiveness and avoiding the development of resistance mechanisms.
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Affiliation(s)
- Filippo Prencipe
- Institute of Crystallography (IC) CNR, Via Amendola 122/O, 70126 Bari, Italy; (F.P.); (G.F.M.); (M.S.)
| | - Anna Zanfardino
- Department of Biology, University of Naples “Federico II”, via Cynthia, 80143 Naples, Italy; (A.Z.); (M.D.N.)
| | - Michela Di Napoli
- Department of Biology, University of Naples “Federico II”, via Cynthia, 80143 Naples, Italy; (A.Z.); (M.D.N.)
| | - Filomena Rossi
- Department of Pharmacy and Interuniversity Research Centre on Bioactive Peptides (CIRPeB), University of Naples “Federico II”, via Mezzocannone 16, 80134 Naples, Italy; (F.R.); (S.D.); (G.P.)
| | - Stefano D’Errico
- Department of Pharmacy and Interuniversity Research Centre on Bioactive Peptides (CIRPeB), University of Naples “Federico II”, via Mezzocannone 16, 80134 Naples, Italy; (F.R.); (S.D.); (G.P.)
| | - Gennaro Piccialli
- Department of Pharmacy and Interuniversity Research Centre on Bioactive Peptides (CIRPeB), University of Naples “Federico II”, via Mezzocannone 16, 80134 Naples, Italy; (F.R.); (S.D.); (G.P.)
| | | | - Michele Saviano
- Institute of Crystallography (IC) CNR, Via Amendola 122/O, 70126 Bari, Italy; (F.P.); (G.F.M.); (M.S.)
| | - Luisa Ronga
- Universite de Pau et des Pays de l’Adour, E2S UPPA, CNRS, IPREM, 64000 Pau, France;
| | - Mario Varcamonti
- Department of Biology, University of Naples “Federico II”, via Cynthia, 80143 Naples, Italy; (A.Z.); (M.D.N.)
- Correspondence: (M.V.); (D.T.); Tel.: +39-081-253-6643 (D.T.)
| | - Diego Tesauro
- Department of Pharmacy and Interuniversity Research Centre on Bioactive Peptides (CIRPeB), University of Naples “Federico II”, via Mezzocannone 16, 80134 Naples, Italy; (F.R.); (S.D.); (G.P.)
- Correspondence: (M.V.); (D.T.); Tel.: +39-081-253-6643 (D.T.)
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5
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Kotzé TJ, Duffy S, Avery VM, Jordaan A, Warner DF, Loots L, Smith GS, Chellan P. Synthesis and antimicrobial study of organoiridium amido-sulfadoxine complexes. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120175] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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Stenger‐Smith JR, Mascharak PK. Gold Drugs with {Au(PPh
3
)}
+
Moiety: Advantages and Medicinal Applications. ChemMedChem 2020; 15:2136-2145. [DOI: 10.1002/cmdc.202000608] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/21/2020] [Indexed: 12/26/2022]
Affiliation(s)
- Jenny R. Stenger‐Smith
- Department of Chemistry and Biochemistry University of California, Santa Cruz 1156 High Street Santa Cruz CA 95064 USA
| | - Pradip K. Mascharak
- Department of Chemistry and Biochemistry University of California, Santa Cruz 1156 High Street Santa Cruz CA 95064 USA
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7
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Stenger-Smith J, Kamariza M, Chakraborty I, Ouattara R, Bertozzi CR, Mascharak PK. Enhanced Bactericidal Effects of Pyrazinamide Toward Mycobacterium smegmatis and Mycobacterium tuberculosis upon Conjugation to a {Au(I)-triphenylphosphine} + Moiety. ACS OMEGA 2020; 5:6826-6833. [PMID: 32258918 PMCID: PMC7114878 DOI: 10.1021/acsomega.0c00071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 03/09/2020] [Indexed: 05/05/2023]
Abstract
As part of the quest for new gold drugs, we have explored the efficacy of three gold complexes derived from the tuberculosis drug pyrazinamide (PZA), namely, the gold(I) complex [Au(PPh3)(PZA)]OTf (1, OTf = trifluoromethanesulfonate) and two gold(III) complexes [Au(PZA)Cl2] (2) and [Au(PZO)Cl2] (3, PZO = pyrazinoic acid, the metabolic product of PZA) against two mycobacteria, Mycobacterium tuberculosis and Mycobacterium smegmatis. Only complex 1 with the {Au(PPh3)}+ moiety exhibits significant bactericidal activity against both strains. In the presence of thiols, 1 gives rise to free PZA and {Au(PPh3)}-thiol polymeric species. A combination of PZA and the {Au(PPh3)}-thiol polymeric species appears to lead to enhanced efficacy of 1 against M. tuberculosis.
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Affiliation(s)
- Jenny Stenger-Smith
- Department
of Chemistry and Biochemistry, University
of California, Santa
Cruz, California 95064, United States
| | - Mireille Kamariza
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Indranil Chakraborty
- Department
of Chemistry and Biochemistry, University
of California, Santa
Cruz, California 95064, United States
| | - Ramatoulaye Ouattara
- Department
of Chemistry and Biochemistry, University
of California, Santa
Cruz, California 95064, United States
| | - Carolyn R. Bertozzi
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Pradip K. Mascharak
- Department
of Chemistry and Biochemistry, University
of California, Santa
Cruz, California 95064, United States
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8
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Young C, Walzl G, Du Plessis N. Therapeutic host-directed strategies to improve outcome in tuberculosis. Mucosal Immunol 2020; 13:190-204. [PMID: 31772320 PMCID: PMC7039813 DOI: 10.1038/s41385-019-0226-5] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 10/15/2019] [Accepted: 10/23/2019] [Indexed: 02/04/2023]
Abstract
Bacille Calmette-Guérin (BCG) is the only licenced tuberculosis (TB) vaccine, but has limited efficacy against pulmonary TB disease development and modest protection against extrapulmonary TB. Preventative antibiotic treatment for Mycobacterium tuberculosis (Mtb) infections in high-prevalence settings is unfeasible due to unclear treatment durability, drug toxicity, logistical constraints related to directly observed treatment strategy (DOTS) and the lengthy treatment protocols. Together, these factors promote non-adherence, contributing to relapse and establishment of drug-resistant Mtb strains. Although antibiotic treatment of drug-susceptible Mtb is generally effective, drug-resistant TB has a treatment efficacy below 50% and can, in a proportion, develop into progressive, untreatable disease. Other immune compromising co-infections and/or co-morbidities require more complex prevention/treatment approaches, posing huge financial burdens to national health services. Novel TB treatment strategies, such as host-directed therapeutics, are required to complement pathogen-targeted approaches. Pre-clinical studies have highlighted promising candidates that enhance endogenous pathways and/or limit destructive host responses. This review discusses promising pre-clinical candidates and forerunning compounds at advanced stages of clinical investigation in TB host-directed therapeutic (HDT) efficacy trials. Such approaches are rationalized to improve outcome in TB and shorten treatment strategies.
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Affiliation(s)
- C Young
- South African Medical Research Council, Centre for Tuberculosis Research, Department of Science and Technology/DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - G Walzl
- South African Medical Research Council, Centre for Tuberculosis Research, Department of Science and Technology/DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - N Du Plessis
- South African Medical Research Council, Centre for Tuberculosis Research, Department of Science and Technology/DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
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9
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Ismail NA, Salman AA, Mohd Yusof MS, Che Soh SK, Kadir Pahirulzaman KA, Ali HM, Sarip R. Synthesis, cytotoxicity and antineoplastic activities of novel acridine-based platinum(II) organometallic complexes. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.06.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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10
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Williams MRM, Bertrand B, Fernandez-Cestau J, Waller ZAE, O'Connell MA, Searcey M, Bochmann M. Acridine-decorated cyclometallated gold(iii) complexes: synthesis and anti-tumour investigations. Dalton Trans 2018; 47:13523-13534. [PMID: 30204186 DOI: 10.1039/c8dt02507j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
(C^N) and (C^N^C) cyclometalated Au(iii) represent a highly promising class of potential anticancer agents. We report here the synthesis of seven new cyclometalated Au(iii) complexes with five of them bearing an acridine moiety attached via (N^O) or (N^N) chelates, acyclic amino carbenes (AAC) and N-heterocyclic carbenes (NHC). The antiproliferative properties of the different complexes were evaluated in vitro on a panel of cancer cells including leukaemia, lung and breast cancer cells. We observed a trend between the cytotoxicity and the intracellular gold uptake of some representative compounds of the series. Some of the acridine-decorated complexes were demonstrated to interact with ds-DNA using FRET-melting techniques.
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11
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Synthesis, structural and antimicrobial studies of type II topoisomerase-targeted copper(II) complexes of 1,3-disubstituted thiourea ligands. J Inorg Biochem 2018; 182:61-70. [PMID: 29499458 DOI: 10.1016/j.jinorgbio.2018.01.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 12/20/2017] [Accepted: 01/07/2018] [Indexed: 12/12/2022]
Abstract
A series of Cu(II) complexes of 3-(trifluoromethyl)phenylthiourea derivatives was synthesized. Their structural properties were investigated by spectroscopic techniques (infrared and electron paramagnetic resonance), as well as molecular modeling. All studied coordination compounds are mononuclear complexes containing two chelating ligands bonded to the metal cation via S and deprotonated N atoms. The new chelates were evaluated for their antimicrobial potency. The complex of 1-(3,4-dichlorophenyl)-3-[3-(trifluoromethyl)phenyl]thiourea (3) presented the highest activity against Gram-positive pathogens, even stronger than the activity of its non-complexed counterpart and the reference drug. The compound also prevented the biofilm formation of methicillin-resistant and standard strains of staphylococcal cocci. The title derivatives were found to be effective inhibitors of DNA gyrase and topoisomerase IV isolated from Staphylococcus aureus. The binding modes of the ligand L3 with DNA gyrase and topoisomerase IV were presented.
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12
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Kukowska M. Amino acid or peptide conjugates of acridine/acridone and quinoline/quinolone-containing drugs. A critical examination of their clinical effectiveness within a twenty-year timeframe in antitumor chemotherapy and treatment of infectious diseases. Eur J Pharm Sci 2017; 109:587-615. [PMID: 28842352 DOI: 10.1016/j.ejps.2017.08.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 08/16/2017] [Accepted: 08/19/2017] [Indexed: 01/10/2023]
Abstract
Acridines/acridones, quinolines/quinolones (chromophores) and their derivatives constitute extremely important family of compounds in current medicine. Great significance of the compounds is connected with antimicrobial and antitumor activities. Combining these features together in one drug seems to be long-term benefit, especially in oncology therapy. The attractiveness of the chromophore drugs is still enhanced by elimination their toxicity and improvement not only selectivity, specificity but also bioavailability. The best results are reached by conjugation to natural peptides. This paper highlights significant advance in the study of amino acid or peptide chromophore conjugates that provide highly encouraging data for novel drug development. The structures and clinical significance of amino acid or peptide chromophore conjugates are widely discussed.
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Affiliation(s)
- Monika Kukowska
- Chair & Department of Chemical Technology of Drugs, Faculty of Pharmacy with Subfaculty of Laboratory Medicine, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416 Gdansk, Poland.
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13
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Pérez SA, de Haro C, Vicente C, Donaire A, Zamora A, Zajac J, Kostrhunova H, Brabec V, Bautista D, Ruiz J. New Acridine Thiourea Gold(I) Anticancer Agents: Targeting the Nucleus and Inhibiting Vasculogenic Mimicry. ACS Chem Biol 2017; 12:1524-1537. [PMID: 28388047 DOI: 10.1021/acschembio.7b00090] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Two new 1-acridin-9-yl-3-methylthiourea Au(I) DNA intercalators [Au(ACRTU)2]Cl (2) and [Au(ACRTU) (PPh3)]PF6 (3) have been prepared. Both complexes were highly active in the human ovarian carcinoma cisplatin-sensitive A2780 cell line, exhibiting IC50 values in the submicromolar range. Compounds 2 and 3 are also cytotoxic toward different phenotypes of breast cancer cell lines MDA-MB-231 (triple negative), SK-BR-3 (HER2+, ERα-, and ERβ-), and MCF-7 (ER+). Both complexes induce apoptosis through activation of caspase-3 in vitro. While inhibition of some proteins (thiol-containing enzymes) seems to be the main mechanism of action for cytotoxic gold complexes, 2 and 3 present a DNA-dependent mechanism of action. They locate in the cell nucleus according to confocal microscopy and transmission electronic microscopy. The binding to DNA resulted to be via intercalation as shown by spectroscopic methods and viscometry, exhibiting a dose-dependent response on topoisomerase I mediated DNA unwinding. In addition, 2 and 3 exhibit potent antiangiogenic effects and are also able to inhibit vasculogenic mimicry of highly invasive MDA-MB-231 cells.
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Affiliation(s)
- Sergio A. Pérez
- Departamento
de Química Inorgánica, Facultad de Química, Biomedical
Research Institute of Murcia (IMIB-Arrixaca-UMU), Universidad de Murcia, E-30071 Murcia, Spain
| | - Concepción de Haro
- Departamento
de Química Inorgánica, Facultad de Química, Biomedical
Research Institute of Murcia (IMIB-Arrixaca-UMU), Universidad de Murcia, E-30071 Murcia, Spain
| | - Consuelo Vicente
- Departamento
de Química Inorgánica, Facultad de Química, Biomedical
Research Institute of Murcia (IMIB-Arrixaca-UMU), Universidad de Murcia, E-30071 Murcia, Spain
| | - Antonio Donaire
- Departamento
de Química Inorgánica, Facultad de Química, Biomedical
Research Institute of Murcia (IMIB-Arrixaca-UMU), Universidad de Murcia, E-30071 Murcia, Spain
| | - Ana Zamora
- Departamento
de Química Inorgánica, Facultad de Química, Biomedical
Research Institute of Murcia (IMIB-Arrixaca-UMU), Universidad de Murcia, E-30071 Murcia, Spain
| | - Juraj Zajac
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czech Republic
- Department
of Biophysics, Faculty of Science, Palacky University, Slechtitelu
27, 783 71 Olomouc, Czech Republic
| | - Hana Kostrhunova
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czech Republic
| | - Viktor Brabec
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czech Republic
| | | | - José Ruiz
- Departamento
de Química Inorgánica, Facultad de Química, Biomedical
Research Institute of Murcia (IMIB-Arrixaca-UMU), Universidad de Murcia, E-30071 Murcia, Spain
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14
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Dean TC, Yang M, Liu M, Grayson JM, DeMartino AW, Day CS, Lee J, Furdui CM, Bierbach U. Human Serum Albumin-Delivered [Au(PEt 3)] + Is a Potent Inhibitor of T Cell Proliferation. ACS Med Chem Lett 2017; 8:572-576. [PMID: 28523113 DOI: 10.1021/acsmedchemlett.7b00142] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 04/21/2017] [Indexed: 12/28/2022] Open
Abstract
Using a modular library format in conjunction with cell viability (MTS) and flow cytometry assays, 90 cationic complexes [AuPL] n+ (P = phosphine ligand; L = thiourea derivative or chloride) were studied for their antiproliferative activity in CD8+ T lymphocyte cells. The activity of the compounds correlates with the steric bulk of the phosphine ligands. Thiourea serves as a leaving group that is readily replaced by cysteine thiol (NMR, ESI-MS). Taking advantage of selective thiourea ligand exchange, the fragments [Au(PEt3)]+ and [Au(JohnPhos)]+ (JohnPhos = 1,1'-biphenyl-2-yl)di-tert-butylphosphine) in compounds 1 and 2 were transferred to recombinant human serum albumin (rHSA). PEt3 promoted efficient modification of Cys34 in HSA (HSA-1), whereas use of bulky JohnPhos as a carrier ligand led to serum protein nonspecifically modified with multiple gold adducts (HSA-2) (Ellman's test, ESI-TOF MS). HSA-1, but not HSA-2, strongly inhibits T cell proliferation at nanomolar doses. The potential role of HSA as a delivery vehicle in gold-based autoimmune disease treatment is discussed.
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Affiliation(s)
- Tyler C. Dean
- Department
of Chemistry, Wake Forest University, Wake Downtown Campus, 455 Vine Street, Winston-Salem, North Carolina 27101, United States
| | - Mu Yang
- Department
of Chemistry, Wake Forest University, Wake Downtown Campus, 455 Vine Street, Winston-Salem, North Carolina 27101, United States
| | - Mingyong Liu
- Department
of Microbiology and Immunology, Wake Forest School of Medicine, Winston-Salem, North Carolina 27101, United States
| | - Jason M. Grayson
- Department
of Microbiology and Immunology, Wake Forest School of Medicine, Winston-Salem, North Carolina 27101, United States
| | - Anthony W. DeMartino
- Department
of Chemistry, Wake Forest University, Wake Downtown Campus, 455 Vine Street, Winston-Salem, North Carolina 27101, United States
| | - Cynthia S. Day
- Department
of Chemistry, Wake Forest University, Wake Downtown Campus, 455 Vine Street, Winston-Salem, North Carolina 27101, United States
| | - Jingyun Lee
- Comprehensive
Cancer Center, Wake Forest School of Medicine, Winston-Salem, North Carolina 27157, United States
| | - Cristina M. Furdui
- Department
of Internal Medicine, Section on Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina 27157, United States
| | - Ulrich Bierbach
- Department
of Chemistry, Wake Forest University, Wake Downtown Campus, 455 Vine Street, Winston-Salem, North Carolina 27101, United States
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15
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Kožurková M, Sabolová D, Kristian P. A review on acridinylthioureas and its derivatives: biological and cytotoxic activity. J Appl Toxicol 2017; 37:1132-1139. [PMID: 28370171 DOI: 10.1002/jat.3464] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 02/17/2017] [Accepted: 02/17/2017] [Indexed: 11/07/2022]
Abstract
Acridines possess two characteristics that have led many researchers to consider the agents interesting targets for future development as potential farmacophores: the planar acridine skeleton, which is able to intercalate into DNA, and the intense fluorescence of the agents. This review offers a study of the multifunctional character of acridines and the synthesis of novel acridine derivatives, with particular focus being placed on isothiocyanates and their congeners, e.g. thioureas, isothioureas, quaternary ammonium salts and platinum/gold conjugates. The review provides an overview of the structure, spectral properties, DNA binding and biological activity of acridinylthiourea congeners. These acridinylthiourea derivatives display significant cytotoxic activities against different types of cancer cell lines at micromolar concentrations. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Mária Kožurková
- Department of Biochemisty, Institute of Chemistry, P.J. Šafárik University Košice, Moyzesova 11, Košice, Slovak Republic.,Biomedical Research Center, University Hospital Hradec Kralove, Sokolovska 581, Hradec Kralove, Czech Republic
| | - Danica Sabolová
- Department of Biochemisty, Institute of Chemistry, P.J. Šafárik University Košice, Moyzesova 11, Košice, Slovak Republic
| | - Pavol Kristian
- Department of Organic Chemistry, Institute of Chemistry, P.J. Šafárik University Košice, Moyzesova 11, Košice, Slovak Republic
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16
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Shakirova JR, Grachova EV, Sizov VV, Starova GL, Koshevoy IO, Melnikov AS, Gimeno MC, Laguna A, Tunik SP. Polynuclear cage-like Au(i) phosphane complexes based on a S2− template: observation of multiple luminescence in coordinated polyaromatic systems. Dalton Trans 2017; 46:2516-2523. [DOI: 10.1039/c6dt04126d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sulfido-phosphane Au(i) complexes display multiple emissions, the nature of which is determined by the distance between Au(i) and the chromophoric center.
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Affiliation(s)
- Julia R. Shakirova
- St. Petersburg State University
- Institute of Chemistry
- 198504 St. Petersburg
- Russia
| | - Elena V. Grachova
- St. Petersburg State University
- Institute of Chemistry
- 198504 St. Petersburg
- Russia
| | - Vladimir V. Sizov
- St. Petersburg State University
- Institute of Chemistry
- 198504 St. Petersburg
- Russia
| | - Galina L. Starova
- St. Petersburg State University
- Institute of Chemistry
- 198504 St. Petersburg
- Russia
| | | | - Alexey S. Melnikov
- St. Petersburg State University
- Department of Physics
- 198504 St. Petersburg
- Russia
- Institute of Nanobiotechnologies
| | - M. Concepción Gimeno
- Universidad de Zaragoza-CSIC
- Departamento de Química Inorgánica
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- 50009 Zaragoza
- Spain
| | - Antonio Laguna
- Universidad de Zaragoza-CSIC
- Departamento de Química Inorgánica
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)
- 50009 Zaragoza
- Spain
| | - Sergey P. Tunik
- St. Petersburg State University
- Institute of Chemistry
- 198504 St. Petersburg
- Russia
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17
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Metal and metalloid containing natural products and a brief overview of their applications in biology, biotechnology and biomedicine. Biometals 2015; 29:1-13. [DOI: 10.1007/s10534-015-9892-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 10/29/2015] [Indexed: 10/22/2022]
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18
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He Z, Huang K, Xiong F, Zhang SF, Xue JR, Liang Y, Jing LH, Qin DB. Self-assembly of imidazoliums salts based on acridine with silver oxide as coordination polymers: Synthesis, fluorescence and antibacterial activity. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.07.030] [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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19
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Langston PK, Yang M, Bierbach U, Parsonage D, Poole LB, Price MJ, Grayson JM. Au-ACRAMTU-PEt3 Alters Redox Balance To Inhibit T Cell Proliferation and Function. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2015; 195:1984-94. [PMID: 26209624 PMCID: PMC4854305 DOI: 10.4049/jimmunol.1400391] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 06/18/2015] [Indexed: 12/24/2022]
Abstract
Although T cells play a critical role in protection from viruses, bacteria, and tumors, they also cause autoimmune diseases such as systemic lupus erythematosus, rheumatoid arthritis, and multiple sclerosis. Unwanted T cell responses during organ transplant, graft-versus-host disease, and allergies are also major clinical problems. Although drugs are available to suppress unwanted immune responses, they have limited efficacy with serious side effects. Thus, new therapeutics limiting T cell activation, proliferation, and function can make an immediate clinical impact. To identify new suppressors of lymphocyte activation, proliferation, and function, we examined the immunosuppressive activity of gold(I) analogs of platinum-acridine antitumor agents. We found that the gold complex Au-ACRAMTU-PEt3 is a potent suppressor of murine and human T cell activation. Preincubation with Au-ACRAMTU-PEt3 suppresses the proliferation of CD4(+) and CD8(+) T cells at a similar concentration as pharmaceutical grade cyclosporine A. Au-ACRAMTU-PEt3 pretreatment decreases the production of IFN-γ, TNF-α, IL-2, and IL-17 by human and murine CD4(+) and CD8(+) T cells. When mice were treated with Au-ACRAMTU-PEt3 during viral infection, the expansion of virus-specific CD8(+) T cells was decreased 10-fold and viral load was elevated. Taken together, these results demonstrate that Au-ACRAMTU-PEt3 has potent immunosuppressive activity that could be used to suppress immune responses during transplantation and autoimmunity.
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Affiliation(s)
- P Kent Langston
- Department of Microbiology and Immunology, Wake Forest University School of Medicine, Winston-Salem, NC 27101
| | - Mu Yang
- Department of Chemistry, Wake Forest University, Winston-Salem, NC 27109; and
| | - Ulrich Bierbach
- Department of Chemistry, Wake Forest University, Winston-Salem, NC 27109; and
| | - Derek Parsonage
- Department of Biochemistry, Wake Forest University School of Medicine, Winston-Salem, NC 27101
| | - Leslie B Poole
- Department of Biochemistry, Wake Forest University School of Medicine, Winston-Salem, NC 27101
| | - Madeline J Price
- Department of Microbiology and Immunology, Wake Forest University School of Medicine, Winston-Salem, NC 27101
| | - Jason M Grayson
- Department of Microbiology and Immunology, Wake Forest University School of Medicine, Winston-Salem, NC 27101;
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20
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Synthesis, characterization, cytotoxic and antitubercular activities of new gold(I) and gold(III) complexes containing ligands derived from carbohydrates. Biometals 2015; 28:845-60. [DOI: 10.1007/s10534-015-9870-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 06/17/2015] [Indexed: 10/23/2022]
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21
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Templeton DM. Speciation in Metal Toxicity and Metal-Based Therapeutics. TOXICS 2015; 3:170-186. [PMID: 29056656 PMCID: PMC5634689 DOI: 10.3390/toxics3020170] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 04/08/2015] [Accepted: 04/22/2015] [Indexed: 01/30/2023]
Abstract
Metallic elements, ions and compounds produce varying degrees of toxicity in organisms with which they come into contact. Metal speciation is critical to understanding these adverse effects; the adjectives "heavy" and "toxic" are not helpful in describing the biological properties of individual elements, but detailed chemical structures are. As a broad generalization, the metallic form of an element is inert, and the ionic salts are the species that show more significant bioavailability. Yet the salts and other chelates of a metal ion can give rise to quite different toxicities, as exemplified by a range of carcinogenic potential for various nickel species. Another important distinction comes when a metallic element is organified, increasing its lipophilicity and hence its ability to penetrate the blood brain barrier, as is seen, for example, with organic mercury and tin species. Some metallic elements, such as gold and platinum, are themselves useful therapeutic agents in some forms, while other species of the same element can be toxic, thus focusing attention on species interconversions in evaluating metal-based drugs. The therapeutic use of metal-chelating agents introduces new species of the target metal in vivo, and this can affect not only its desired detoxification, but also introduce a potential for further mechanisms of toxicity. Examples of therapeutic iron chelator species are discussed in this context, as well as the more recent aspects of development of chelation therapy for uranium exposure.
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Affiliation(s)
- Douglas M Templeton
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada.
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22
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Yang M, Pickard AJ, Qiao X, Gueble MJ, Day CS, Kucera GL, Bierbach U. Synthesis, reactivity, and biological activity of gold(I) complexes modified with thiourea-functionalized tyrosine kinase inhibitors. Inorg Chem 2015; 54:3316-24. [PMID: 25793564 DOI: 10.1021/ic502998a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Thiourea-modified 3-chloro-4-fluoroanilino-quinazoline derivatives have been studied as potential receptor-targeted carrier ligands in linear gold(I) complexes. The molecules mimic the epidermal growth factor receptor (EGFR) tyrosine kinase-targeted inhibitor gefitinib. Thiourea groups were either directly attached to quinazoline-C6 (compounds 4, 5, and 7) or linked to this position via a flexible ethylamino chain (compound 9). Compound 7 acts as a thiourea-S/quinazoline-N1 mixed-donor ligand, giving the unexpected dinuclear complex [{Au(μ-7-S,N)}2]X2 (X = Cl(-), SCN(-)) (12a,b) (X-ray crystallography, electrospray mass spectrometry). Derivative 9 forms a stable linear complex, [Au(PEt3)(9-S)](NO3) (13). The biological activity of the carrier ligands and corresponding gold(I) complexes was studied in NCI-H460 and NCI-H1975 lung cancer cells. Compound 9 partially overcomes resistance to gefitinib in NCI-H1975, a lung cancer cell line characterized by a L858R/T790M mutation in EGFR (IC50 values of 1.7 and 30 μM, respectively). The corresponding gold complex (13) maintains activity in the low-micromolar concentration range similar to the metal-free carrier. Compound 9 and the corresponding [Au(PEt3)] complex, 13, inhibit EGFR kinase-mediated phosphorylation with sub-micromolar IC50 values similar to those observed for gefitinib under the same assay conditions. Potential mechanisms of action and reactions in biological media of this new type of hybrid agent, as well as shortcomings of the current design are discussed.
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Affiliation(s)
- Mu Yang
- †Department of Chemistry, Wake Forest University, Winston-Salem, North Carolina 27109, United States
| | - Amanda J Pickard
- †Department of Chemistry, Wake Forest University, Winston-Salem, North Carolina 27109, United States
| | - Xin Qiao
- ‡School of Pharmaceutical Sciences, Tianjin Medical University, Tianjin 300070, PR China
| | - Matthew J Gueble
- †Department of Chemistry, Wake Forest University, Winston-Salem, North Carolina 27109, United States
| | - Cynthia S Day
- †Department of Chemistry, Wake Forest University, Winston-Salem, North Carolina 27109, United States
| | - Gregory L Kucera
- §Department of Internal Medicine, Hematology-Oncology Section, Wake Forest University Health Sciences, Winston-Salem, North Carolina 27157, United States
| | - Ulrich Bierbach
- †Department of Chemistry, Wake Forest University, Winston-Salem, North Carolina 27109, United States
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23
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Jagadishbabu N, Shivashankar K. One pot synthesis of acridine analogues from 1,2-diols as key reagents. RSC Adv 2015. [DOI: 10.1039/c5ra19595k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Lead tetraacetate is an efficient reagent for the one pot synthesis of acridines from a variety of 1,2-diols, dimedone and ammonium acetate.
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Affiliation(s)
| | - Kalegowda Shivashankar
- P.G. Department of Chemistry
- Central College Campus
- Bangalore University
- Bangalore-560 001
- India
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24
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25
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Sharma S, Singh H, Singh H, Mohinder Singh Bedi P. Chemotherapeutic Potential of Acridine Analogs: An Ample Review. HETEROCYCLES 2015. [DOI: 10.3987/rev-15-826] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Glišić BĐ, Djuran MI. Gold complexes as antimicrobial agents: an overview of different biological activities in relation to the oxidation state of the gold ion and the ligand structure. Dalton Trans 2014; 43:5950-69. [PMID: 24598838 DOI: 10.1039/c4dt00022f] [Citation(s) in RCA: 141] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Interest in antimicrobial gold complexes originated from the work of Robert Koch at the end of 19th century, who demonstrated that potassium dicyanidoaurate(I), K[Au(CN)2], showed activity against Mycobacterium tuberculosis, a causative agent of tuberculosis. Subsequently, a large number of gold(I) and gold(III) complexes have been evaluated as possible antimicrobial agents against a broad spectrum of bacteria, fungi and parasites. The first part of the present review article summarizes the results achieved in the field of antibacterial and antifungal activity of gold(I) and gold(III) complexes. The represented gold(I) complexes have been divided into three distinct classes based on the type of coordinated ligand: (i) complexes with phosphine-type ligands, (ii) complexes with N-heterocyclic carbene ligands and (iii) various other gold(I) complexes, while the results related to the antibacterial and antifungal gold(III) complexes have been mainly focused on the organometallic-type of complexes. The second section of this article represents findings obtained from the evaluation of antimalarial activity of gold complexes against chloroquine-sensitive and chloroquine-resistant strains of Plasmodium falciparum parasite. Antimalarial gold(I) and gold(III) complexes have been divided into the following classes, based on the nature of the coordinated ligand: (i) complexes with chloroquine and its derivatives, (ii) complexes with N-heterocyclic carbene ligands, (iii) complexes containing functionalised alkynes and (iv) thiosemicarbazonato ligands, as well as (v) other gold(I) and gold(III) complexes. In the last section of the review, gold(I) and gold(III) complexes have been reported to be potential agents against parasites that cause amoebiasis, leishmaniasis and trypanosomiasis. A systematic summary of these results could contribute to the future design of new gold(I) and gold(III) complexes as potential antimicrobial agents.
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Affiliation(s)
- Biljana Đ Glišić
- Department of Chemistry, Faculty of Science, University of Kragujevac, R. Domanovića 12, 34000 Kragujevac, Serbia.
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27
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Agarwal C, Prasad E. Metal ion detection by naphthylthiourea derivatives through ‘turn-on’ excimer emission. RSC Adv 2014. [DOI: 10.1039/c3ra45510f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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28
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W. Gribble G, D. Mosher M, D. Jaycox G, Cory M, A. Fairley T. Potential DNA Bis-Intercalating Agents. Synthesis and Antitumor Activity of N,N'-(Methylenedi-4,1-cyclohexanediyl-bis(9-acridinamine) Isomers. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)77] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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29
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Quinacrine reactivity with prion proteins and prion-derived peptides. Amino Acids 2013; 44:1279-92. [DOI: 10.1007/s00726-013-1460-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Accepted: 01/05/2013] [Indexed: 10/27/2022]
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30
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Roecker L, Aiyegbo M, Al-Haddad A, Fletcher E, Kc R, Hurst J, Lane T, Larsen R, Noinaj N, Teh SL, Wade SK, Parkin S. Synthesis and Characterisation of [(en)2Co]3+ Complexes Coordinated by Substituted Thiourea Ligands. Aust J Chem 2013. [DOI: 10.1071/ch13150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Substituted thiourea ligands bind in a bidentate manner forming a four-membered ring through the sulfur atom and a deprotonated thiourea nitrogen atom when reacted with [(en)2Co(OSO2CF3)2]+ in tetramethylene sulfone. Reaction of unsymmetrical ligands results in the formation of coordination isomers, some of which can be separated by column chromatography using Sephadex SPC-25. Coordination isomers are easily distinguishable based on visible and 1H NMR spectroscopy . Twelve para-substituted and one meta-substituted ligands were studied: N,N′-dibenzylthiourea (1a); N-(R)phenyl-N′-benzylthiourea {R = H (2a), NO2 (2b), CH3 (2c)}; N-(R)phenyl-N′-(R′)phenylthiourea {R, R′: H, H (3a), H, CH3 (3b), OCH3, NO2 (3c), CH3, NO2 (3d)}; N-methyl-N′-(R)phenylthiourea {R = H (4a), CH3 (4b), OCH3 (4c), NO2 (4d), 3-CH3 (4e)}. The solid state structure (X-ray) of one isomer of Co-4a as its perchlorate salt confirms the coordination mode suggested by 1H NMR spectroscopy and shows that the Co–N bond trans to the coordinated thiourea sulfur induces a structural trans effect of 0.019 Å.
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31
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Gimeno MC, Laguna A, Visbal R. N-Heterocyclic Carbene Coinage Metal Complexes as Intense Blue-Green Emitters. Organometallics 2012. [DOI: 10.1021/om300571m] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. Concepción Gimeno
- Departamento de Química Inorgánica, Instituto
de Síntesis Química y Catálisis Homogénea
(ISQCH), CSIC−Universidad de Zaragoza, E-50009 Zaragoza, Spain
| | - Antonio Laguna
- Departamento de Química Inorgánica, Instituto
de Síntesis Química y Catálisis Homogénea
(ISQCH), CSIC−Universidad de Zaragoza, E-50009 Zaragoza, Spain
| | - Renso Visbal
- Departamento de Química Inorgánica, Instituto
de Síntesis Química y Catálisis Homogénea
(ISQCH), CSIC−Universidad de Zaragoza, E-50009 Zaragoza, Spain
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32
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Li L, Luo X, Chang X, Deng J, Yang W. A Novel Type of Mono-Substituted Polyacetylene: Synthesis and Characterization of Poly(N-Propargylthiourea)s. Des Monomers Polym 2012. [DOI: 10.1163/138577211x555767] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Lei Li
- a State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Xiaofeng Luo
- b State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Xuan Chang
- c College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Jianping Deng
- d State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China;,
| | - Wantai Yang
- e State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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33
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Frik M, Jiménez J, Gracia I, Falvello LR, Abi-Habib S, Suriel K, Muth TR, Contel M. Luminescent di- and polynuclear organometallic gold(I)-metal (Au2, {Au2Ag}n and {Au2Cu}n) compounds containing bidentate phosphanes as active antimicrobial agents. Chemistry 2012; 18:3659-74. [PMID: 22334444 DOI: 10.1002/chem.201103145] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Indexed: 12/21/2022]
Abstract
The reaction of new dinuclear gold(I) organometallic complexes containing mesityl ligands and bridging bidentate phosphanes [Au(2)(mes)(2)(μ-LL)] (LL=dppe: 1,2-bis(diphenylphosphano)ethane 1a, and water-soluble dppy: 1,2-bis(di-3-pyridylphosphano)ethane 1b) with Ag(+) and Cu(+) lead to the formation of a family of heterometallic clusters with mesityl bridging ligands of the general formula [Au(2)M(μ-mes)(2) (μ-LL)][A] (M=Ag, A=ClO(4)(-), LL=dppe 2a, dppy 2b; M=Ag, A=SO(3)CF(3)(-), LL=dppe 3a, dppy 3b; M=Cu, A=PF(6)(-), LL=dppe 4a, dppy 4b). The new compounds were characterized by different spectroscopic techniques and mass spectrometry The crystal structures of [Au(2)(mes)(2)(μ-dppy)] (1b) and [Au(2)Ag(μ-mes)(2)(μ-dppe)][SO(3)CF(3)] (3a) were determined by a single-crystal X-ray diffraction study. 3a in solid state is not a cyclic trinuclear Au(2)Ag derivative but it gives an open polymeric structure instead, with the {Au(2)(μ-dppe)} fragments "linked" by {Ag(μ-mes)(2)} units. The very short distances of 2.7559(6) Å (Au-Ag) and 2.9229(8) Å (Au-Au) are indicative of gold-silver (metallophilic) and aurophilic interactions. A systematic study of their luminescence properties revealed that all compounds are brightly luminescent in solid state, at room temperature (RT) and at 77 K, or in frozen DMSO solutions with lifetimes in the microsecond range and probably due to the self-aggregation of [Au(2)M(μ-mes)(2)(μ-LL)](+) units (M=Ag or Cu; LL=dppe or dppy) into an extended chain structure, through Au-Au and/or Au-M metallophilic interactions, as that observed for 3a. In solid state the heterometallic Au(2)M complexes with dppe (2a-4a) show a shift of emission maxima (from ca. 430 to the range of 520-540 nm) as compared to the parent dinuclear organometallic product 1a while the complexes with dppy (2b-4b) display a more moderate shift (505 for 1b to a max of 563 nm for 4b). More importantly, compound [Au(2)Ag(μ-mes)(2)(μ-dppy)]ClO(4) (2b) resulted luminescent in diluted DMSO solution at room temperature. Previously reported compound [Au(2)Cl(2)(μ-LL)] (LL dppy 5b) was also studied for comparative purposes. The antimicrobial activity of 1-5 and Ag[A] (A=ClO(4)(-), SO(3)CF(3)(-)) against gram-positive and gram-negative bacteria and yeast was evaluated. Most tested compounds displayed moderate to high antibacterial activity while heteronuclear Au(2)M derivatives with dppe (2a-4a) were the more active (minimum inhibitory concentration 10 to 1 μg mL(-1)). Compounds containing silver were ten times more active to gram-negative bacteria than the parent dinuclear compound 1a or silver salts. Au(2)Ag compounds with dppy (2b, 3b) were also potent against fungi.
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Affiliation(s)
- Malgorzata Frik
- Department of Chemistry, Brooklyn College and The Graduate Center, The City University of New York, Brooklyn, NY 11210, USA
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Frezza M, Dou QP, Xiao Y, Samouei H, Rashidi M, Samari F, Hemmateenejad B. In vitro and in vivo antitumor activities and DNA binding mode of five coordinated cyclometalated organoplatinum(II) complexes containing biphosphine ligands. J Med Chem 2011; 54:6166-76. [PMID: 21815643 DOI: 10.1021/jm2006832] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
New complexes [Pt(C(∧)N)Cl(dppa)] (1), and [Pt(C(∧)N)Cl(dppm)] (2), (C(∧)N. deprotonated 2-phenylpyridine; dppa. bis(diphenylphosphino)amine; dppm. bis(diphenylphosphino)methane) were suggested to have pentacoordinated geometry as investigated by NMR and conductometry. Pharmacological effects of 1 and 2 were evaluated for their proteasome-inhibitory and apoptosis-inducing activities under in vitro and in vivo conditions, showing significant proteasome-inhibitory activity against purified 20S proteasome, while 2 demonstrated superior inhibitory activity against cellular 26S proteasome. Consistently, this effect was associated with higher levels of proteasome target proteins and apoptosis induction in breast cancer cells. Importantly, preliminary studies show 1 and 2 were able to exert a similar effect in vivo by inhibiting the growth of breast cancer xenografts in mice, which was associated with proteasome inhibition and apoptosis induction. Interaction of 1 and 2 with herring sperm DNA was investigated by fluorimeteric emission, suggesting that Pt(II)-containing biphosphine complexes with DNA binding capabilities can also target and inhibit the tumor proteasome.
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Affiliation(s)
- Michael Frezza
- The Developmental Therapeutics Program, Barbara Ann Karmanos Cancer Institute, and Departments of Oncology, Pharmacology and Pathology, School of Medicine, Wayne State University, Detroit, Michigan, USA
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Abbehausen C, Castro JF, Spera MB, Heinrich TA, Costa-Neto CM, Lustri WR, Formiga AL, Corbi PP. Synthesis, spectroscopic characterization, DFT studies and biological assays of a novel gold(I) complex with 2-mercaptothiazoline. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.06.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Fillat MF, Gimeno MC, Laguna A, Latorre E, Ortego L, Villacampa MD. Synthesis, Structure and Bactericide Activity of (Aminophosphane)gold(I) Thiolate Complexes. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201001195] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Corbi P, Quintão F, Ferraresi D, Lustri W, Amaral A, Massabni A. Chemical, spectroscopic characterization, and in vitro antibacterial studies of a new gold(I) complex with N-acetyl-L-cysteine. J COORD CHEM 2010. [DOI: 10.1080/00958971003782608] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- P.P. Corbi
- a Laboratório de Química Bioinorgânica e Medicinal , Instituto de Química, Universidade Estadual de Campinas–UNICAMP , CP 6154, CEP 13083-970, Campinas, SP, Brazil
- b Centro Universitário de Araraquara–UNIARA, Associação São Bento de Ensino , Rua Voluntários da Pátria 1309, CEP 14801-320, Araraquara, SP, Brazil
| | - F.A. Quintão
- b Centro Universitário de Araraquara–UNIARA, Associação São Bento de Ensino , Rua Voluntários da Pátria 1309, CEP 14801-320, Araraquara, SP, Brazil
| | - D.K.D. Ferraresi
- b Centro Universitário de Araraquara–UNIARA, Associação São Bento de Ensino , Rua Voluntários da Pátria 1309, CEP 14801-320, Araraquara, SP, Brazil
| | - W.R. Lustri
- b Centro Universitário de Araraquara–UNIARA, Associação São Bento de Ensino , Rua Voluntários da Pátria 1309, CEP 14801-320, Araraquara, SP, Brazil
| | - A.C. Amaral
- b Centro Universitário de Araraquara–UNIARA, Associação São Bento de Ensino , Rua Voluntários da Pátria 1309, CEP 14801-320, Araraquara, SP, Brazil
| | - A.C. Massabni
- c Departamento de Química Geral e Inorgânica , Instituto de Química–UNESP , Rua Prof. Francisco Degni s/n, CP 355, CEP 14801-970, Araraquara, SP, Brazil
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