1201
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Synthesis and biological evaluation of novel ethyl 2-amino-6-ferrocenyl-1,6-dihydropyrimidine-5-carboxylates and ethyl 2-amino-6-ferrocenylpyrimidine-5-carboxylates. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.02.016] [Citation(s) in RCA: 12] [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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1202
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Synthesis, characterization and antitumor activity of novel amide derivatives containing ferrocenyl pyrazol-moiety. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.02.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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1203
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Aguiar ACC, Santos RDM, Figueiredo FJB, Cortopassi WA, Pimentel AS, França TCC, Meneghetti MR, Krettli AU. Antimalarial activity and mechanisms of action of two novel 4-aminoquinolines against chloroquine-resistant parasites. PLoS One 2012; 7:e37259. [PMID: 22649514 PMCID: PMC3359361 DOI: 10.1371/journal.pone.0037259] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Accepted: 04/19/2012] [Indexed: 12/05/2022] Open
Abstract
Chloroquine (CQ) is a cost effective antimalarial drug with a relatively good safety profile (or therapeutic index). However, CQ is no longer used alone to treat patients with Plasmodium falciparum due to the emergence and spread of CQ-resistant strains, also reported for P. vivax. Despite CQ resistance, novel drug candidates based on the structure of CQ continue to be considered, as in the present work. One CQ analog was synthesized as monoquinoline (MAQ) and compared with a previously synthesized bisquinoline (BAQ), both tested against P. falciparum in vitro and against P. berghei in mice, then evaluated in vitro for their cytotoxicity and ability to inhibit hemozoin formation. Their interactions with residues present in the NADH binding site of P falciparum lactate dehydrogenase were evaluated using docking analysis software. Both compounds were active in the nanomolar range evaluated through the HRPII and hypoxanthine tests. MAQ and BAQ derivatives were not toxic, and both compounds significantly inhibited hemozoin formation, in a dose-dependent manner. MAQ had a higher selectivity index than BAQ and both compounds were weak PfLDH inhibitors, a result previously reported also for CQ. Taken together, the two CQ analogues represent promising molecules which seem to act in a crucial point for the parasite, inhibiting hemozoin formation.
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Affiliation(s)
- Anna Caroline Campos Aguiar
- Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
- Programa de Pós Graduação em Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | | | - Wilian Augusto Cortopassi
- Laboratório de Modelagem Molecular Aplicada a Defesa Química e Biológica (LMDQB), Instituto Militar de Engenharia, Rio de Janeiro, Rio de Janeiro, Brazil
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - André Silva Pimentel
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tanos Celmar Costa França
- Laboratório de Modelagem Molecular Aplicada a Defesa Química e Biológica (LMDQB), Instituto Militar de Engenharia, Rio de Janeiro, Rio de Janeiro, Brazil
- * E-mail: (AUK); (MRM); (TCCF)
| | - Mario Roberto Meneghetti
- Instituto de Química e Biotecnologia, Universidade Federal do Alagoas, Maceió, Alagoas, Brazil
- * E-mail: (AUK); (MRM); (TCCF)
| | - Antoniana Ursine Krettli
- Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
- Programa de Pós Graduação em Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- * E-mail: (AUK); (MRM); (TCCF)
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1204
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Patra M, Gasser G. Organometallic Compounds: An Opportunity for Chemical Biology? Chembiochem 2012; 13:1232-52. [DOI: 10.1002/cbic.201200159] [Citation(s) in RCA: 167] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Indexed: 12/12/2022]
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1205
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Salmon AJ, Williams ML, Wu QK, Morizzi J, Gregg D, Charman SA, Vullo D, Supuran CT, Poulsen SA. Metallocene-based inhibitors of cancer-associated carbonic anhydrase enzymes IX and XII. J Med Chem 2012; 55:5506-17. [PMID: 22540953 DOI: 10.1021/jm300427m] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
In this study, 20 metallocene-based compounds comprising extensive structural diversity were synthesized and evaluated as carbonic anhydrase (CA, EC 4.2.1.1) inhibitors. These compounds proved moderate to good CA inhibitors in vitro, with several compounds displaying selectivity for cancer-associated isozymes CA IX and CA XII compared to off-target CA I and CA II. Compound 6 was the most potent ferrocene-based inhibitor with K(i)s of 5.9 and 6.8 nM at CA IX and XII, respectively. A selection of key drug-like parameters comprising Log P, Log D, solubility, and in vitro metabolic stability and permeability were measured for two of the ferrocene-based compounds, regioisomers 1 and 5. Compounds 1 and 5 were found to have characteristics consistent with lipophilic compounds, however, our findings show that the lipophilicity of the ferrocene moiety is not well modeled by replacement with either a naphthyl or a phenyl moiety in software prediction tools.
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Affiliation(s)
- Adam J Salmon
- Eskitis Institute for Cell and Molecular Therapies, Griffith University, Nathan, Queensland 4111, Australia
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1206
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Mooney Á, Tiedt R, Maghoub T, O’Donovan N, Crown J, White B, Kenny PTM. Structure–Activity Relationship and Mode of Action of N-(6-Ferrocenyl-2-naphthoyl) Dipeptide Ethyl Esters: Novel Organometallic Anticancer Compounds. J Med Chem 2012; 55:5455-66. [DOI: 10.1021/jm3004027] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Áine Mooney
- School of Chemical
Sciences, Dublin City University, Dublin
9, Ireland
- National Institute
for Cellular
Biotechnology, Dublin City University,
Dublin 9, Ireland
| | - Rachel Tiedt
- School of Chemical
Sciences, Dublin City University, Dublin
9, Ireland
- National Institute
for Cellular
Biotechnology, Dublin City University,
Dublin 9, Ireland
| | - Thamir Maghoub
- National Institute
for Cellular
Biotechnology, Dublin City University,
Dublin 9, Ireland
| | - Norma O’Donovan
- National Institute
for Cellular
Biotechnology, Dublin City University,
Dublin 9, Ireland
| | - John Crown
- National Institute
for Cellular
Biotechnology, Dublin City University,
Dublin 9, Ireland
- Department
of Medical Oncology, St. Vincent’s University Hospital, Dublin 4,
Ireland
| | - Blánaid White
- School of Chemical
Sciences, Dublin City University, Dublin
9, Ireland
| | - Peter T. M. Kenny
- School of Chemical
Sciences, Dublin City University, Dublin
9, Ireland
- National Institute
for Cellular
Biotechnology, Dublin City University,
Dublin 9, Ireland
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1207
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Navarro M, Castro W, Biot C. Bioorganometallic Compounds with Antimalarial Targets: Inhibiting Hemozoin Formation. Organometallics 2012. [DOI: 10.1021/om300296n] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Maribel Navarro
- School
of Chemical and Mathematical Sciences, Murdoch University, Western Australia 6150, Australia
| | - William Castro
- Lab. Quı́mica Bioinorgánica,
Centro de Quı́mica, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas
1020-A, Venezuela
| | - Christophe Biot
- Unité
de Glycobiologie
Structurale et Fonctionnelle, UMR CNRS 8576, Université Lille 1, 59650 Villeneuve d’Ascq, France
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1208
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Mishra A, Jung H, Park JW, Kim HK, Kim H, Stang PJ, Chi KW. Anticancer Activity of Self-Assembled Molecular Rectangles via Arene-Ruthenium Acceptors and a New Unsymmetrical Amide Ligand. Organometallics 2012; 31:3519-3526. [PMID: 22639481 PMCID: PMC3359097 DOI: 10.1021/om2012826] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Two new and large molecular rectangles 4 and 5 were synthesized from two different arene-ruthenium [Ru(2)(μ-η(4)-C(2)O(4))(MeOH)(2)(η(6)-p-Pr(i)C(6)H(4)Me)(2)][O(3)SCF(3)](2) (2), and [Ru(2) (p-cymene)(2) (donq) (OH(2))(2)] [O(3)SCF(3)](2) (donq = 5,8-dioxydo-1,4-naphthaquinonato) (3) acceptors and a new unsymmetrical N-(4-(pyridin-4-ylethynyl)phenyl) isonicotinamide (1) donor ligand. X-ray crystallography of 4 confirmed a molecular rectangle. The (1)H NMR spectra of both rectangles 4 and 5 showed a mixture of two structural, head-to-tail (HTL) and head-to-head (HTH) type, isomers in a 1:1 ratio. The cytotoxicities of both rectangles have been established against Colo320 (colorectal cancer), A549 (lung cancer), MCF-7(breast cancer) and H1299 (lung cancer) human cancer cell lines. The cytotoxicity of rectangle 5 was found to be considerably stronger against all cancer cell lines than that of the reference drug cisplatin.
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Affiliation(s)
- Anurag Mishra
- Department of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea
| | - Hyunji Jung
- Department of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea
| | - Jeong Woo Park
- School of Biological Sciences, University of Ulsan, Ulsan 680-749, Republic of Korea
| | - Hong Kyeung Kim
- School of Biological Sciences, University of Ulsan, Ulsan 680-749, Republic of Korea
| | - Hyunuk Kim
- Energy Materials and Convergence Research Department, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea
| | - Peter J. Stang
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, U.S.A
| | - Ki-Whan Chi
- Department of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea
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1209
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Gutiérrez-Hernández AI, López-Cortés JG, Ortega-Alfaro MC, Ramírez-Apan MT, Cázares-Marinero JDJ, Toscano RA. Ferrocenylselenoamides: Synthesis, Characterization and Cytotoxic Properties. J Med Chem 2012; 55:4652-63. [DOI: 10.1021/jm300150t] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Alejandro I. Gutiérrez-Hernández
- Instituto de Química,
Universidad Nacional Autónoma de México, Circuito Exterior,
Ciudad Universitaria, Coyoacán, C.P. 04360 México D.F.,
México
| | - José G. López-Cortés
- Instituto de Química,
Universidad Nacional Autónoma de México, Circuito Exterior,
Ciudad Universitaria, Coyoacán, C.P. 04360 México D.F.,
México
| | - M. Carmen Ortega-Alfaro
- Instituto
de Ciencias Nucleares,
Universidad Nacional Autónoma de México, Circuito Exterior,
Ciudad Universitaria, Coyoacán, C.P. 04360 México D.F.,
México
| | - M. Teresa Ramírez-Apan
- Instituto de Química,
Universidad Nacional Autónoma de México, Circuito Exterior,
Ciudad Universitaria, Coyoacán, C.P. 04360 México D.F.,
México
| | - José de Jesús Cázares-Marinero
- Instituto de Química,
Universidad Nacional Autónoma de México, Circuito Exterior,
Ciudad Universitaria, Coyoacán, C.P. 04360 México D.F.,
México
| | - Rubén A. Toscano
- Instituto de Química,
Universidad Nacional Autónoma de México, Circuito Exterior,
Ciudad Universitaria, Coyoacán, C.P. 04360 México D.F.,
México
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1210
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Auzias M, Therrien B, Süss-Fink G. Heteronuclear complexes containing the N,N′-di(2-pyridyl)amidocarboxylferrocene ligand. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2012.01.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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1211
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Sasmal PK, Carregal-Romero S, Han AA, Streu CN, Lin Z, Namikawa K, Elliott SL, Köster RW, Parak WJ, Meggers E. Catalytic Azide Reduction in Biological Environments. Chembiochem 2012; 13:1116-20. [DOI: 10.1002/cbic.201100719] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Indexed: 01/31/2023]
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1212
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Zheng Y, Zhu M, Srinivasan S, Nwachukwu JC, Cavett V, Min J, Carlson KE, Wang P, Dong C, Katzenellenbogen JA, Nettles KW, Zhou HB. Development of selective estrogen receptor modulator (SERM)-like activity through an indirect mechanism of estrogen receptor antagonism: defining the binding mode of 7-oxabicyclo[2.2.1]hept-5-ene scaffold core ligands. ChemMedChem 2012; 7:1094-100. [PMID: 22517684 DOI: 10.1002/cmdc.201200048] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Indexed: 11/10/2022]
Abstract
Previously, we discovered estrogen receptor (ER) ligands with a novel three-dimensional oxabicyclo[2.2.1]heptene core scaffold and good ER binding affinity act as partial agonists via small alkyl ester substitutions on the bicyclic core that indirectly modulate the critical switch helix in the ER ligand binding domain, helix 12, by interactions with helix 11. This contrasts with the mechanism of action of tamoxifen, which directly pushes helix 12 out of the conformation required for gene activation. We now report that a much larger substitution can be tolerated at this position of the bicyclic core scaffold, namely a phenyl sulfonate group, which defines a novel binding epitope for the estrogen receptor. We prepared an array of 14 oxabicycloheptene sulfonates, varying the phenyl sulfonate group. As with the parent compound, 5,6-bis-(4-hydroxyphenyl)-7-oxabicyclo[2.2.1]hept-5-ene-2-sulfonic acid phenyl ester (OBHS), these compounds showed preferential affinity for ERα, and the disposition and size of the phenyl substituents were important determinants of the binding affinity and selectivity of these compounds, with those having ortho substituents giving the highest, and para substituents the lowest affinities for ERα. A few analogues exhibit ERα binding affinities that are comparable to or, in the case of the ortho-chloro analogue, higher than that of OBHS itself. In cell-based studies, we found several compounds with activity profiles comparable to tamoxifen, but acting entirely as indirect antagonists, allosterically interfering with recruitment of coactivator proteins to the receptor. Thus, the OBHS binding epitope represents a novel approach to the development of estrogen receptor antagonists via an indirect mechanism of antagonism.
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Affiliation(s)
- Yangfan Zheng
- State Key Laboratory of Virology, Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, 185 East Lake Road, Wuhan, 430071, PR China
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1213
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Liu W, Bensdorf K, Proetto M, Hagenbach A, Abram U, Gust R. Synthesis, Characterization, and in Vitro Studies of Bis[1,3-diethyl-4,5-diarylimidazol-2-ylidene]gold(I/III) Complexes. J Med Chem 2012; 55:3713-24. [DOI: 10.1021/jm3000196] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Wukun Liu
- Institute of Pharmacy, Freie Universität Berlin, Königin-Luise-Strasse 2 + 4, 14195 Berlin, Germany
| | - Kerstin Bensdorf
- Institute of Pharmacy, Freie Universität Berlin, Königin-Luise-Strasse 2 + 4, 14195 Berlin, Germany
| | - Maria Proetto
- Institute of Pharmacy, Freie Universität Berlin, Königin-Luise-Strasse 2 + 4, 14195 Berlin, Germany
| | - Adelheid Hagenbach
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstrasse 34-36, 14195 Berlin, Germany
| | - Ulrich Abram
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstrasse 34-36, 14195 Berlin, Germany
| | - Ronald Gust
- Institute of Pharmacy, Freie Universität Berlin, Königin-Luise-Strasse 2 + 4, 14195 Berlin, Germany
- Institute of Pharmacy, University Innsbruck, Innrain 80/82, A-6020 Innsbruck, Austria
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1214
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Abstract
Resistance to commercially available antimalarial drugs is a public health problem. Since the end of the last century, no new antimalarial drugs have been introduced into clinical practice, and new drug development has been quite disappointing. There is therefore a real need to develop new class of antimalarial drugs that could be used alone or in combination. This review describes the development and recent advances on the preparation of ferrocenic compounds as a new class of antimalarial agents with potential for clinical development.
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1215
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Liu W, Chen X, Gust R. Synthesis, Antitumor, and Antibacterial Activity of Bis[4,5-diarylimidazol-2-ylidene]methane Derivatives. Arch Pharm (Weinheim) 2012; 345:557-64. [DOI: 10.1002/ardp.201100474] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Revised: 02/07/2012] [Accepted: 02/16/2012] [Indexed: 12/23/2022]
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1216
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Goswami TK, Gadadhar S, Roy M, Nethaji M, Karande AA, Chakravarty AR. Ferrocene-Conjugated Copper(II) Complexes of l-Methionine and Phenanthroline Bases: Synthesis, Structure, and Photocytotoxic Activity. Organometallics 2012. [DOI: 10.1021/om201102k] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Tridib K. Goswami
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Sudarshan Gadadhar
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Mithun Roy
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Munirathinam Nethaji
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Anjali A. Karande
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Akhil R. Chakravarty
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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1217
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Glans L, Hu W, Jöst C, de Kock C, Smith PJ, Haukka M, Bruhn H, Schatzschneider U, Nordlander E. Synthesis and biological activity of cymantrene and cyrhetrene 4-aminoquinoline conjugates against malaria, leishmaniasis, and trypanosomiasis. Dalton Trans 2012; 41:6443-50. [PMID: 22421887 DOI: 10.1039/c2dt30077j] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organometallic analogues of chloroquine show promise as new antimalarial agents capable of overcoming resistance to the parent drug chloroquine. Here, the synthesis and characterization of three new cymantrene (CpMn(CO)(3)) and cyrhetrene (CpRe(CO)(3)) 4-aminoquinoline conjugates with either an amine or amide linker are reported. The antimalarial activity of the new organometallic conjugates N-(2-(7-chloroquinolin-4-ylamino)ethyl)-4-cymantrenylbutanamide (3), N-(2-(7-chloroquinolin-4-ylamino)ethyl)-4-cyrhetrenylbutanamide (4) and N-(7-chloroquinolin-4-yl)-N'-(cymantrenylmethyl)ethane-1,2-diamine (6) was evaluated against a chloroquine-sensitive (CQS) and a chloroquine-resistant strain (CQR) of the malaria parasite Plasmodium falciparum. The cymantrene complex with an amine linker (6) showed good activity against the CQS strain but was inactive against the CQR strain. In contrast, cymantrene and cyrhetrene compounds with an amide linker were active against both the CQS and the CQR strain. In addition, the antibacterial, anti-trypanosomal and anti-leishmanial activity of the compounds was evaluated. Compound 6 showed submicromolar activity against Trypanosoma brucei at a concentration where the toxicity to normal human cells is low. No significant effect was noticed on the exchange of manganese for rhenium in the CpM(CO)(3) moiety in any of the biological assays.
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Affiliation(s)
- Lotta Glans
- Chemical Physics, Center for Chemistry and Chemical Engineering, Lund University, Lund, Sweden
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1218
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Betanzos-Lara S, Liu Z, Habtemariam A, Pizarro AM, Qamar B, Sadler PJ. Organometallic ruthenium and iridium transfer-hydrogenation catalysts using coenzyme NADH as a cofactor. Angew Chem Int Ed Engl 2012; 51:3897-900. [PMID: 22415924 DOI: 10.1002/anie.201108175] [Citation(s) in RCA: 145] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 02/02/2012] [Indexed: 12/24/2022]
Abstract
Artificial enzymes: half-sandwich arene ruthenium(II) and cyclopentadienyl iridium(III) complexes containing N,N-chelated ligands can use NADH as a source of hydride for the reduction of ketones. Moreover, cyclopentadienyl phenanthroline iridium(III) derivatives at micromolar concentrations are robust catalysts for the production of H(2) from NADH in water and can raise the NAD(+)/NADH ratio in cancer cells.
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1219
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Betanzos-Lara S, Liu Z, Habtemariam A, Pizarro AM, Qamar B, Sadler PJ. Organometallic Ruthenium and Iridium Transfer-Hydrogenation Catalysts Using Coenzyme NADH as a Cofactor. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108175] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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1220
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Patra M, Gasser G, Metzler-Nolte N. Small organometallic compounds as antibacterial agents. Dalton Trans 2012; 41:6350-8. [PMID: 22411216 DOI: 10.1039/c2dt12460b] [Citation(s) in RCA: 202] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The emergence of bacterial resistance to commercial antibiotics is an issue of global importance. During the last two decades, the number of antibacterial agents that have been discovered and introduced into the market has steadily declined and failed to meet the challenges posed by rapidly increasing resistance of the pathogens against common antibacterial drugs. The development of new classes of compounds to control the virulence of the pathogens is therefore urgently required. This perspective describes the historical development in brief and recent advances on the preparation of small organometallic compounds as new classes of antibacterial agents with potential for clinical development.
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Affiliation(s)
- Malay Patra
- Lehrstuhl für Anorganische Chemie I, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Bochum, Germany
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1221
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Glans L, Ehnbom A, de Kock C, Martínez A, Estrada J, Smith PJ, Haukka M, Sánchez-Delgado RA, Nordlander E. Ruthenium(II) arene complexes with chelating chloroquine analogue ligands: synthesis, characterization and in vitro antimalarial activity. Dalton Trans 2012; 41:2764-73. [PMID: 22249579 PMCID: PMC3303165 DOI: 10.1039/c2dt12083f] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Three new ruthenium complexes with bidentate chloroquine analogue ligands, [Ru(η(6)-cym)(L(1))Cl]Cl (1, cym = p-cymene, L(1) = N-(2-((pyridin-2-yl)methylamino)ethyl)-7-chloroquinolin-4-amine), [Ru(η(6)-cym)(L(2))Cl]Cl (2, L(2) = N-(2-((1-methyl-1H-imidazol-2-yl)methylamino)ethyl)-7-chloroquinolin-4-amine) and [Ru(η(6)-cym)(L(3))Cl] (3, L(3) = N-(2-((2-hydroxyphenyl)methylimino)ethyl)-7-chloroquinolin-4-amine) have been synthesized and characterized. In addition, the X-ray crystal structure of 2 is reported. The antimalarial activity of complexes 1-3 and ligands L(1), L(2) and L(3), as well as the compound N-(2-(bis((pyridin-2-yl)methyl)amino)ethyl)-7-chloroquinolin-4-amine (L(4)), against chloroquine sensitive and chloroquine resistant Plasmodium falciparum malaria strains was evaluated. While 1 and 2 are less active than the corresponding ligands, 3 exhibits high antimalarial activity. The chloroquine analogue L(2) also shows good activity against both the chloroquine sensitive and the chloroquine resistant strains. Heme aggregation inhibition activity (HAIA) at an aqueous buffer/n-octanol interface (HAIR(50)) and lipophilicity (D, as measured by water/n-octanol distribution coefficients) have been measured for all ligands and metal complexes. A direct correlation between the D and HAIR(50) properties cannot be made because of the relative structural diversity of the complexes, but it may be noted that these properties are enhanced upon complexation of the inactive ligand L(3) to ruthenium, to give a metal complex (3) with promising antimalarial activity.
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Affiliation(s)
- Lotta Glans
- Inorganic Chemistry Research Group, Chemical Physics, Center for Chemistry and Chemical Engineering, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Andreas Ehnbom
- Inorganic Chemistry Research Group, Chemical Physics, Center for Chemistry and Chemical Engineering, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Carmen de Kock
- Division of Pharmacology, Department of Medicine, University of Cape Town Medical School, Observatory 7925, South Africa
| | - Alberto Martínez
- Department of Chemistry, Brooklyn College and The Graduate Center, The City University of New York, CUNY, 2900 Bedford Avenue, Brooklyn, New York 11210, U.S.A
| | - Jesús Estrada
- Department of Chemistry, Brooklyn College and The Graduate Center, The City University of New York, CUNY, 2900 Bedford Avenue, Brooklyn, New York 11210, U.S.A
| | - Peter J. Smith
- Division of Pharmacology, Department of Medicine, University of Cape Town Medical School, Observatory 7925, South Africa
| | - Matti Haukka
- Department of Chemistry, University of Eastern Finland, Box 111, FIN-80101 Joensuu, Finland
| | - Roberto A. Sánchez-Delgado
- Department of Chemistry, Brooklyn College and The Graduate Center, The City University of New York, CUNY, 2900 Bedford Avenue, Brooklyn, New York 11210, U.S.A
| | - Ebbe Nordlander
- Inorganic Chemistry Research Group, Chemical Physics, Center for Chemistry and Chemical Engineering, Lund University, Box 124, SE-221 00 Lund, Sweden
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1222
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Nazarov AA, Risse J, Ang WH, Schmitt F, Zava O, Ruggi A, Groessl M, Scopelitti R, Juillerat-Jeanneret L, Hartinger CG, Dyson PJ. Anthracene-Tethered Ruthenium(II) Arene Complexes as Tools To Visualize the Cellular Localization of Putative Organometallic Anticancer Compounds. Inorg Chem 2012; 51:3633-9. [DOI: 10.1021/ic202530j] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Alexey A. Nazarov
- Institute
of Chemical Sciences
and Engineering, Swiss Federal Institute of Technology (EPFL), 1015 Lausanne, Switzerland
| | - Julie Risse
- Institute
of Chemical Sciences
and Engineering, Swiss Federal Institute of Technology (EPFL), 1015 Lausanne, Switzerland
| | - Wee Han Ang
- Department of Chemistry, National University of Singapore, Singapore
117543, Singapore
| | - Frederic Schmitt
- University Institute of Pathology Centre Hospitalier Universitaire Vaudois (CHUV), 1011 Lausanne, Switzerland
| | - Olivier Zava
- Institute
of Chemical Sciences
and Engineering, Swiss Federal Institute of Technology (EPFL), 1015 Lausanne, Switzerland
| | - Albert Ruggi
- Institute
of Chemical Sciences
and Engineering, Swiss Federal Institute of Technology (EPFL), 1015 Lausanne, Switzerland
| | - Michael Groessl
- Institute
of Chemical Sciences
and Engineering, Swiss Federal Institute of Technology (EPFL), 1015 Lausanne, Switzerland
| | - Rosario Scopelitti
- Institute
of Chemical Sciences
and Engineering, Swiss Federal Institute of Technology (EPFL), 1015 Lausanne, Switzerland
| | | | | | - Paul J. Dyson
- Institute
of Chemical Sciences
and Engineering, Swiss Federal Institute of Technology (EPFL), 1015 Lausanne, Switzerland
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1223
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Trivedi R, Deepthi SB, Giribabu L, Sridhar B, Sujitha P, Kumar CG, Ramakrishna KVS. Synthesis, Crystal Structure, Electronic Spectroscopy, Electrochemistry and Biological Studies of Ferrocene-Carbohydrate Conjugates. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200038] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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1224
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Eloy L, Jarrousse AS, Teyssot ML, Gautier A, Morel L, Jolivalt C, Cresteil T, Roland S. Anticancer Activity of Silver-N-Heterocyclic Carbene Complexes: Caspase-Independent Induction of Apoptosis via Mitochondrial Apoptosis-Inducing Factor (AIF). ChemMedChem 2012; 7:805-14. [DOI: 10.1002/cmdc.201200055] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Indexed: 01/20/2023]
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1225
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Jung JY, Kempe DK, Loh LHJ, Shoultz SE, Powell GL. Microwave preparation of osmium clusters with anticancer activity; rapid syntheses of Os6(CO)18, Os3(CO)10(acetonitrile)2, and Os3(μ-H)(μ-OH)(CO)10. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2011.12.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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1226
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Syntheses, structures, and anticancer activity of novel organometallic ruthenium–maltol complexes. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2011.12.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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1227
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Kowalski K, Koceva-Chyła A, Pieniążek A, Bernasińska J, Skiba J, Rybarczyk-Pirek AJ, Jóźwiak Z. The synthesis, structure, electrochemistry and in vitro anticancer activity studies of ferrocenyl-thymine conjugates. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2011.11.014] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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1228
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The potential of organometallic complexes in medicinal chemistry. Curr Opin Chem Biol 2012; 16:84-91. [PMID: 22366385 DOI: 10.1016/j.cbpa.2012.01.013] [Citation(s) in RCA: 376] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Revised: 01/19/2012] [Accepted: 01/25/2012] [Indexed: 12/26/2022]
Abstract
Organometallic complexes have unique physico-chemical properties, which have been widely used in homogenous catalysis, for example, for the synthesis of lead compounds and drug candidates. Over the past two decades, a few scientists from all over the world have extended the use of the specific characteristics of these compounds (e.g. structural diversity, possibility of ligand exchange, redox and catalytic properties) for medicinal purposes. The results are stunning. A few organometallic compounds have already entered clinical trials and it can be anticipated that several more will follow in coming years. In this short review, we present the specific advantages that organometallic metal complexes have over purely organic and also coordination compounds. Furthermore, using specific examples, we illustrate how these particular properties can be put to good use in medicinal chemistry. The examples we present have an emphasis on, but are not restricted to, anti-cancer activity.
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1229
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Patra M, Gasser G, Wenzel M, Merz K, Bandow JE, Metzler-Nolte N. Sandwich and Half-Sandwich Derivatives of Platensimycin: Synthesis and Biological Evaluation. Organometallics 2012. [DOI: 10.1021/om201146c] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Malay Patra
- Lehrstuhl für Anorganische
Chemie I-Bioanorganische Chemie, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Gebäude NC 3
Nord, Universitätsstrasse 150, D-44801 Bochum, Germany,
| | - Gilles Gasser
- Lehrstuhl für Anorganische
Chemie I-Bioanorganische Chemie, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Gebäude NC 3
Nord, Universitätsstrasse 150, D-44801 Bochum, Germany,
- Institute of Inorganic Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich,
Switzerland
| | - Michaela Wenzel
- Lehrstuhl für
Biologie
der Mikroorganismen, Fakultät
für Biologie und Biotechnologie, Ruhr-Universität Bochum, Universitätsstrasse
150, D-44801 Bochum, Germany
| | - Klaus Merz
- Lehrstuhl für Anorganische
Chemie I-Bioanorganische Chemie, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Gebäude NC 3
Nord, Universitätsstrasse 150, D-44801 Bochum, Germany,
| | - Julia E. Bandow
- Lehrstuhl für
Biologie
der Mikroorganismen, Fakultät
für Biologie und Biotechnologie, Ruhr-Universität Bochum, Universitätsstrasse
150, D-44801 Bochum, Germany
| | - Nils Metzler-Nolte
- Lehrstuhl für Anorganische
Chemie I-Bioanorganische Chemie, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Gebäude NC 3
Nord, Universitätsstrasse 150, D-44801 Bochum, Germany,
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1230
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Can D, Spingler B, Schmutz P, Mendes F, Raposinho P, Fernandes C, Carta F, Innocenti A, Santos I, Supuran CT, Alberto R. [(Cp-R)M(CO)3] (M=Re or 99mTc) Arylsulfonamide, Arylsulfamide, and Arylsulfamate Conjugates for Selective Targeting of Human Carbonic Anhydrase IX. Angew Chem Int Ed Engl 2012; 51:3354-7. [DOI: 10.1002/anie.201107333] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 01/24/2012] [Indexed: 12/11/2022]
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1231
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Can D, Spingler B, Schmutz P, Mendes F, Raposinho P, Fernandes C, Carta F, Innocenti A, Santos I, Supuran CT, Alberto R. [(Cp-R)M(CO)3] (M=Re or 99mTc) Arylsulfonamide, Arylsulfamide, and Arylsulfamate Conjugates for Selective Targeting of Human Carbonic Anhydrase IX. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201107333] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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1232
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Hardy CG, Ren L, Zhang J, Tang C. Side-Chain Metallocene-Containing Polymers by Living and Controlled Polymerizations. Isr J Chem 2012. [DOI: 10.1002/ijch.201100110] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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1233
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Barry NPE, Sadler PJ. Dicarba-closo-dodecarborane-containing half-sandwich complexes of ruthenium, osmium, rhodium and iridium: biological relevance and synthetic strategies. Chem Soc Rev 2012; 41:3264-79. [PMID: 22307021 DOI: 10.1039/c2cs15300a] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review describes how the incorporation of dicarba-closo-dodecarboranes into half-sandwich complexes of ruthenium, osmium, rhodium and iridium might lead to the development of a new class of compounds with applications in medicine. Such a combination not only has unexplored potential in traditional areas such as Boron Neutron Capture Therapy agents, but also as pharmacophores for the targeting of biologically important proteins and the development of targeted drugs. The synthetic pathways used for the syntheses of dicarba-closo-dodecarboranes-containing half-sandwich complexes of ruthenium, osmium, rhodium and iridium are also reviewed. Complexes with a wide variety of geometries and characteristics can be prepared. Examples of addition reactions on the metal centre, B-H activation, transmetalation reactions and/or direct formation of metal-metal bonds are discussed (103 references).
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Affiliation(s)
- Nicolas P E Barry
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
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1234
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Abramkin S, Valiahdi SM, Jakupec MA, Galanski M, Metzler-Nolte N, Keppler BK. Solid-phase synthesis of oxaliplatin-TAT peptide bioconjugates. Dalton Trans 2012; 41:3001-5. [PMID: 22281694 DOI: 10.1039/c2dt12024k] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Platinum-based drugs play a crucial role in the fight against cancer. Oxaliplatin, which is used in the treatment of colorectal carcinoma, was the last platinum-based agent to be approved worldwide. However, the efficiency of the therapy is limited for example by a low accumulation of the drug in cancer cells. Cell-penetrating peptides (CPPs) are known to ease the cellular membrane transport and are used as vectors for low-molecular-weight drugs and drug carriers; of them, TAT peptides are the best-studied group. In this work, a TAT-peptide fragment (YGRKKRRQRRR) was for the first time conjugated to a platinum(IV) analog of oxaliplatin as a vehicle for membrane penetration. Solid-phase peptide synthesis and subsequent coupling with the platinum complex afforded mono- and difunctionalized conjugates, which were separated by preparative HPLC and characterized by analytical HPLC, ESI-MS, and (1)H NMR spectroscopy. Both conjugates are active in the low micromolar range in CH1 and SW480 human cancer cells, requiring much lower concentrations than the untargeted analogs for equal effects.
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Affiliation(s)
- Sergey Abramkin
- Institute of Inorganic Chemistry, University of Vienna, Vienna, Austria
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1235
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Lopes LMF, Kopylovich MN, Pombeiro AL, Ilharco LM. Reactivity of the antitumor complex (H2trz)[trans-RuCl4(N2-Htrz)2] in the presence of DNA purines within a fluorinated silica matrix. J Phys Chem B 2012; 116:1189-99. [PMID: 22188554 DOI: 10.1021/jp210234e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The stability of the antitumor Ru(III) complex (H(2)trz)[trans-RuCl(4)(N(2)-Htrz)(2)] within a tailored sol-gel silica matrix was studied, combining the information from UV-vis and infrared spectroscopies. The matrix was synthesized by a one-step sol-gel process catalyzed by hydrofluoric acid, resulting extremely light, hydrophobic and fluorinated. It is shown that upon encapsulation, the complex undergoes a series of processes, starting with the increase in charge density on the metal center, followed by hydrolysis reactions. The modified complex interacts with the matrix through hydrogen bonds between the aquo/hydroxo ligands and the fluorine atoms. Its interactions with DNA purines (guanine and adenine) were probed within the confined medium defined by the same silica matrix. It is found that coencapsulated guanine does not interfere with the complex aquation processes, while coencapsulated adenine has a delaying effect. No covalent bonding between the complex and the purines is detected, but interactions between the triazole ligands and the imidazole ring of guanine and the imidazole and pyrimidine rings of adenine are observed. Hydrogen bonding is established between the carbonyl and the ammine groups of guanine and the aquo/hydroxo ligands of the complex. For adenine, those interactions involve mostly the N9H of the purine and the NH groups of the triazole ligands, in addition to π-π interactions.
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Affiliation(s)
- Luís M F Lopes
- Centro de Química-Física Molecular, Institute of Nanoscience and Nanotechnology, Instituto Superior Técnico, Universidade Técnica de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
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1236
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Ren L, Zhang J, Hardy CG, Ma S, Tang C. Cobaltocenium-Containing Block Copolymers: Ring-Opening Metathesis Polymerization, Self-Assembly and Precursors for Template Synthesis of Inorganic Nanoparticles. Macromol Rapid Commun 2012; 33:510-6. [DOI: 10.1002/marc.201100732] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Revised: 12/01/2011] [Indexed: 11/06/2022]
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1237
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Hablot D, Sutter A, Retailleau P, Ziessel R. Unsymmetrical p-Carborane Backbone as a Linker for Donor-Acceptor Dyads. Chemistry 2012; 18:1890-5. [DOI: 10.1002/chem.201103307] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Indexed: 12/15/2022]
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1238
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Dieckmann S, Riedel R, Harms K, Meggers E. Pyridocarbazole-Rhodium(III) Complexes as Protein Kinase Inhibitors. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201101175] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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1239
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Lee GH, Chang Y, Kim TJ. Blood-Pool and Targeting MRI Contrast Agents: From Gd-Chelates to Gd-Nanoparticles. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201101137] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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1240
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Hanif M, Nazarov AA, Legin A, Groessl M, Arion VB, Jakupec MA, Tsybin YO, Dyson PJ, Keppler BK, Hartinger CG. Maleimide-functionalised organoruthenium anticancer agents and their binding to thiol-containing biomolecules. Chem Commun (Camb) 2012; 48:1475-7. [DOI: 10.1039/c1cc14713g] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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1241
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Schmitt F, Barry NP, Juillerat-Jeanneret L, Therrien B. Efficient photodynamic therapy of cancer using chemotherapeutic porphyrin–ruthenium metalla-cubes. Bioorg Med Chem Lett 2012; 22:178-80. [DOI: 10.1016/j.bmcl.2011.11.058] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Revised: 11/10/2011] [Accepted: 11/10/2011] [Indexed: 11/30/2022]
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1242
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V. Stevens C, I. Roman B, Guégan M, De Vos N, Maton C. Synthesis and Reactivity of Novel 1H-Isochromeno[3,4-d]imidazol-1-onium Salts. HETEROCYCLES 2012. [DOI: 10.3987/com-11-s(p)17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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1243
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Fu Y, Romero MJ, Habtemariam A, Snowden ME, Song L, Clarkson GJ, Qamar B, Pizarro AM, Unwin PR, Sadler PJ. The contrasting chemical reactivity of potent isoelectronic iminopyridine and azopyridine osmium(ii) arene anticancer complexes. Chem Sci 2012. [DOI: 10.1039/c2sc20220d] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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1244
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Leung CH, Yang H, Ma VPY, Chan DSH, Zhong HJ, Li YW, Fong WF, Ma DL. Inhibition of Janus kinase 2 by cyclometalated rhodium complexes. MEDCHEMCOMM 2012. [DOI: 10.1039/c2md00306f] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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1245
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Ren L, Zhang J, Bai X, Hardy CG, Shimizu KD, Tang C. Preparation of cationic cobaltoceniumpolymers and block copolymers by “living” ring-opening metathesispolymerization. Chem Sci 2012. [DOI: 10.1039/c1sc00783a] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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1246
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I. Klimova E, Flores-Alamo M, M. Méndez Stivalet J, Klimova T. Competitive Condensation and Tandem Cyclization Reactions of 2-Cyano-3-ferrocenylacrylonitrile with Amidines in an Aqueous Medium. HETEROCYCLES 2012. [DOI: 10.3987/com-12-12540] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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1247
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Prikhod'ko A, Pointillart F, Golhen S, Gavrilenko KS, Ouahab L, Kolotilov SV. Synthesis, structure, circular dichroism of a Δ(−)546-di-μ-hydroxo-tetrakis(S-prolinato)dicobalt(iii) complex and NMR study of its interaction with chiral and non-chiral probes in solutions. NEW J CHEM 2012. [DOI: 10.1039/c2nj40447h] [Citation(s) in RCA: 2] [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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1248
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Synthesis of [RuII(η6-p-cymene)(PPh3)(L)Cl]PF6 complexes with carbohydrate-derived phosphites, imidazole or indazole co-ligands. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.10.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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1249
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Wang H, Yonker NJD, Gao H, Phillips DL, Zhao C, Ji L, Mao ZW. Predicting the interactions of organometallic ruthenium ethylenediamine complexes with mononucleotides: insights from density functional theory. RSC Adv 2012. [DOI: 10.1039/c2ra20984e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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1250
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Bratsos I, Mitri E, Ravalico F, Zangrando E, Gianferrara T, Bergamo A, Alessio E. New half sandwich Ru(ii) coordination compounds for anticancer activity. Dalton Trans 2012; 41:7358-71. [DOI: 10.1039/c2dt30654a] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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