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Mohan B, Jana A, Das N, Bharti S, Choudhary M. Syntheses, crystal structures, antioxidant SOD-like properties and in-vitro antimicrobial studies of Cu(II) and Ni (II) complexes with 2-(( E )-(4-bromo-2-chlorophenylimino) methyl)-6-bromo-4-nitrophenol and ( E )-1-(3, 5-dichloro-2-hydroxybenzylidene)-4, 4-dimethylthiosemicarbazide. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.06.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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2
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Bharti S, Choudhary M, Mohan B. Syntheses, characterizations, crystal structures, antibacterial and SOD-like activities of nickel(II) and copper(II) complexes with 2-((Z)-(4-methoxyphenylimino)methyl)-4,6-dichlorophenol. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1424839] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Sulakshna Bharti
- Department of Chemistry, National Institute of Technology Patna, Patna, India
| | - Mukesh Choudhary
- Department of Chemistry, National Institute of Technology Patna, Patna, India
| | - Bharti Mohan
- Department of Chemistry, National Institute of Technology Patna, Patna, India
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Ghidini A, Murtola M, Strömberg R. Influence of conjugation and other structural changes on the activity of Cu²⁺ based PNAzymes. Org Biomol Chem 2016; 14:2768-73. [PMID: 26856621 DOI: 10.1039/c5ob02394g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
We have previously shown that PNA-neocuproine conjugates can act as artificial RNA restriction enzymes. In the present study we have additionally conjugated the PNA with different entities, such as oligoethers, peptides etc. and also constructed systems where the PNA is designed to clamp the target RNA forming a triplex. Some conjugations are detrimental for the activity while most are silent which means that conjugation can be done to alter physical properties without losing activity. Conjugation with a single oligoether close to the neocuproine does enhance the rate almost twofold compared to the system without the oligoether. The systems designed to clamp the RNA target by forming a triplex retain the activity if the added oligoT sequence is 5 PNA units or shorter and extends the arsenal of artificial RNA restriction enzymes. Changing the direction of a closing base pair, where the target RNA forms a bulge, from a GC to a CG pair enhances the rate of cleavage somewhat without compromising the selectivity, leading to the so far most efficient artificial nuclease reported.
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Affiliation(s)
- A Ghidini
- Karolinska Institutet, Department of Biosciences and Nutrition, Novum, Hälsovägen 7, S-14183 Huddinge, Sweden.
| | - M Murtola
- Karolinska Institutet, Department of Biosciences and Nutrition, Novum, Hälsovägen 7, S-14183 Huddinge, Sweden. and Turku University, Department of Chemistry, Turku 20014, Finland
| | - R Strömberg
- Karolinska Institutet, Department of Biosciences and Nutrition, Novum, Hälsovägen 7, S-14183 Huddinge, Sweden.
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Kaczmarek AM, Porebski PWA, Mortier T, Lynen F, Van Deun R, Van Hecke K. Near-infrared luminescence and RNA cleavage ability of lanthanide Schiff base complexes derived from N,N'-bis(3-methoxysalicylidene)ethylene-1,2-diamine ligands. J Inorg Biochem 2016; 163:194-205. [PMID: 27554192 DOI: 10.1016/j.jinorgbio.2016.07.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 07/14/2016] [Accepted: 07/26/2016] [Indexed: 10/21/2022]
Abstract
A complete series of lanthanide Schiff base salen-type complexes were prepared with trivalent lanthanide ions (Ln3+) and the N,N'-bis-(3-methoxysalicylidene)ethylene-1,2-diamine ligand (Ln3+=La3+, Ce3+, Pr3+, Nd3+, Sm3+, Eu3+, Gd3+, Tb3+, Dy3+, Ho3+, Er3+, Tm3+, Yb3+, Lu3+). Three unique crystal structures of La3+ and Pr3+N,N'-bis-(3-methoxysalicylidene)ethylene-1,2-diamine complexes, with the La3+ complex prepared in two different synthetic approaches, are reported, namely a dimeric [La(H2L)(NO3)3]2 (H2L=N,N'-bis-(3-methoxysalicylidene)ethylene-1,2-diamine) complex, an asymmetric two-centered [La2(H2L)2(NO3)6] complex and a discrete mononuclear [Pr(H2L)(NO3)2(H2O)2] complex. For Nd3+ and Sm3+, an isotypic mononuclear [Nd(H2L)(NO3)3] and 1D polymeric [Sm(H2L)(NO3)3(MeOH)]n structure was obtained, respectively. The whole series of complexes was tested for their ability to cleave the 20-mer RNA oligonucleotide 5'-AGC-GAU-AAG-AUU-CAU-AUA-UC-3'. Additionally three complexes (Ln3+=Nd3+, Sm3+, Ho3+) were tested for the cleavage of the 12-mer RNA oligonucleotide 5'-GCA-CCC-UGU-CAG-3'. A detailed luminescence study was additionally carried out and revealed that the Eu3+ complex emitted bright red light upon excitation at both 285.8nm and 394.4nm. The Nd3+, Er3+, and Yb3+ complexes showed strong emission in the near-infrared region after excitation at 380nm.
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Affiliation(s)
- Anna M Kaczmarek
- L(3) - Luminescent Lanthanide Lab, Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281-S3, B-9000 Ghent, Belgium.
| | - Piotr W Alvarez Porebski
- Separation Science Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, B-9000 Ghent, Belgium
| | - Tineke Mortier
- XStruct, Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281-S3, B-9000 Ghent, Belgium
| | - Frederic Lynen
- Separation Science Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, B-9000 Ghent, Belgium
| | - Rik Van Deun
- L(3) - Luminescent Lanthanide Lab, Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281-S3, B-9000 Ghent, Belgium
| | - Kristof Van Hecke
- XStruct, Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281-S3, B-9000 Ghent, Belgium.
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Oxa-Michael reaction of metallocarbonyl complexes bearing the maleimidato ligand. Reactivity studies with selected hydroxy compounds. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.01.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Williams A, Staroseletz Y, Zenkova MA, Jeannin L, Aojula H, Bichenkova EV. Peptidyl-oligonucleotide conjugates demonstrate efficient cleavage of RNA in a sequence-specific manner. Bioconjug Chem 2015; 26:1129-43. [PMID: 25955796 DOI: 10.1021/acs.bioconjchem.5b00193] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Described here is a new class of peptidyl-oligonucleotide conjugates (POCs) which show efficient cleavage of a target RNA in a sequence-specific manner. Through phosphoramidate attachment of a 17-mer TΨC-targeting oligonucleotide to amphiphilic peptide sequences containing leucine, arginine, and glycine, zero-linker conjugates are created which exhibit targeted phosphodiester cleavage under physiological conditions. tRNA(Phe) from brewer's yeast was used as a model target sequence in order to probe different structural variants of POCs in terms of selective TΨC-arm directed cleavage. Almost quantitative (97-100%) sequence-specific tRNA cleavage is observed for several POCs over a 24 h period with a reaction half-life of less than 1 h. Nontargeted cleavage of tRNA(Phe) or HIV-1 RNA is absent. Structure-activity relationships reveal that removal of the peptide's central glycine residue significantly decreases tRNA cleavage activity; however, this can be entirely restored through replacement of the peptide's C-terminal carboxylic acid group with the carboxamide functionality. Truncation of the catalytic peptide also has a detrimental effect on POC activity. Based on the encouraging results presented, POCs could be further developed with the aim of creating useful tools for molecular biology or novel therapeutics targeting specific messenger, miRNA, and genomic viral RNA sequences.
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Affiliation(s)
- Aled Williams
- †Manchester Pharmacy School, University of Manchester, Oxford Road, Manchester, United Kingdom, M13 9PT
| | - Yaroslav Staroseletz
- ‡Institute of Chemical Biology and Fundamental Medicine SB RAS, 8 Laurentiev Avenue, 630090, Novosibirsk, Russia
| | - Marina A Zenkova
- ‡Institute of Chemical Biology and Fundamental Medicine SB RAS, 8 Laurentiev Avenue, 630090, Novosibirsk, Russia
| | - Laurent Jeannin
- §Peptisyntha S.A., 310 Rue de Ransbeek, 1120 Brussels, Belgium
| | - Harmesh Aojula
- †Manchester Pharmacy School, University of Manchester, Oxford Road, Manchester, United Kingdom, M13 9PT
| | - Elena V Bichenkova
- †Manchester Pharmacy School, University of Manchester, Oxford Road, Manchester, United Kingdom, M13 9PT
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Cui Y, Dong X, Li Y, Li Z, Chen W. Synthesis, structures and urease inhibition studies of Schiff base metal complexes derived from 3,5-dibromosalicylaldehyde. Eur J Med Chem 2012; 58:323-31. [DOI: 10.1016/j.ejmech.2012.09.037] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2012] [Revised: 08/22/2012] [Accepted: 09/10/2012] [Indexed: 11/25/2022]
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8
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Li Y, Li Z, Liu Y, Dong X, Cui Y. Synthesis, crystal structures, and urease inhibition studies of two new Schiff-base copper complexes derived from n-butylamine. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.637169] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Yuguang Li
- a School of Chemistry and Chemical Engineering, Engineering Research Center for Clean Production of Textile Printing, Ministry of Education , Wuhan Textile University , Wuhan 430073 , People's Republic of China
- b School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University , Nanjing 210093 , People's Republic of China
| | - Zuowen Li
- a School of Chemistry and Chemical Engineering, Engineering Research Center for Clean Production of Textile Printing, Ministry of Education , Wuhan Textile University , Wuhan 430073 , People's Republic of China
- b School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University , Nanjing 210093 , People's Republic of China
| | - Yang Liu
- a School of Chemistry and Chemical Engineering, Engineering Research Center for Clean Production of Textile Printing, Ministry of Education , Wuhan Textile University , Wuhan 430073 , People's Republic of China
- b School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University , Nanjing 210093 , People's Republic of China
| | - Xiongwei Dong
- a School of Chemistry and Chemical Engineering, Engineering Research Center for Clean Production of Textile Printing, Ministry of Education , Wuhan Textile University , Wuhan 430073 , People's Republic of China
- b School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University , Nanjing 210093 , People's Republic of China
| | - Yongming Cui
- a School of Chemistry and Chemical Engineering, Engineering Research Center for Clean Production of Textile Printing, Ministry of Education , Wuhan Textile University , Wuhan 430073 , People's Republic of China
- b School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University , Nanjing 210093 , People's Republic of China
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9
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Li YG, Dong XW, Ai R, Xu XL, Zhu HL. Synthesis and crystal structure of a new Schiff base ligand and its cobalt(II) complex. RUSS J COORD CHEM+ 2011. [DOI: 10.1134/s1070328411070098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Chen W, Miao P, Li YG, Zhu HL, Zeng QF. Synthesis and solid state structures of two new copper(II) complexes of Schiff bases derived from furfuryl and tetrahydrofurfurylamine. RUSS J COORD CHEM+ 2010. [DOI: 10.1134/s1070328410120110] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Adamski A, Patroniak V, Kubicki M. 2-Acetyl-pyridinium 3-amino-2-chloro-pyridinium tetra-chloridocobaltate(II). Acta Crystallogr Sect E Struct Rep Online 2009; 65:m175-6. [PMID: 21581781 PMCID: PMC2968359 DOI: 10.1107/s1600536809000713] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2008] [Accepted: 01/07/2009] [Indexed: 11/30/2022]
Abstract
In the title complex, (C5H6ClN2)(C7H8NO)[CoCl4], the CoII ions are tetrahedrally coordinated. The crystal structure is built from hydrogen-bonded centrosymmetric tetramers of tetrachloridocobaltate(II) dianions and 3-amino-2-chloropyridinium cations, additionally strengthened by significant π–π stacking of pyridinium rings [interplanar distance 3.389 (3) Å]. The tetramers are linked by N—H⋯Cl hydrogen bonds into chains; the second kind of cations, viz. 2-acetylpyridinium, are connected by N—H⋯Cl hydrogen bonds to both sides of the chain. The Co—Cl bond lengths in the dianion correlate with the number of hydrogen bonds accepted by the Cl atom. An intramolecular C—H⋯Cl interaction is also present.
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Affiliation(s)
- Ariel Adamski
- Department of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland
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12
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Radecka-Paryzek W. Self-assembly in Schiff base lanthanide complexes — From supramolecular dimers to coordination polymers. CAN J CHEM 2009. [DOI: 10.1139/v08-109] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A review is given of the latest contribution of the author’s research group to the coordination chemistry of Schiff base polyaza macrocycles and acyclic salicylaldimines. Focus is placed on the effectiveness of lanthanides in supramolecular self-assembly of the components leading to the formation of compounds with unusual properties and structures.Key words: Schiff base macrocycles, salicylaldimines, lanthanides, self-assembly, template synthesis.
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Razkin J, Lindgren J, Nilsson H, Baltzer L. Enhanced complexity and catalytic efficiency in the hydrolysis of phosphate diesters by rationally designed helix-loop-helix motifs. Chembiochem 2008; 9:1975-84. [PMID: 18600814 DOI: 10.1002/cbic.200800057] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
HJ1, a 42-residue peptide that folds into a helix-loop-helix motif and dimerizes to form a four-helix bundle, successfully catalyzes the cleavage of "early stage" DNA model substrates in an aqueous solution at pH 7.0, with a rate enhancement in the hydrolysis of heptyl 4-nitrophenyl phosphate of over three orders of magnitude over that of the imidazole-catalyzed reaction, k(2)(HJ1)/k(2)(Im) = 3135. The second-order rate constant, k(2)(HJ1) was determined to be 1.58x10(-4) M(-1) s(-1). The catalyst successfully assembles residues that in a single elementary reaction step are capable of general-acid and general-base catalysis as well as transition state stabilization and proximity effects. The reactivity achieved with the HJ1 polypeptide, rationally designed to catalyze the hydrolysis of phosphodiesters, is based on two histidine residues flanked by four arginines and two adjacent tyrosine residues, all located on the surface of a helix-loop-helix motif. The introduction of Tyr residues close to the catalytic site improves efficiency, in the cleavage of activated aryl alkyl phosphates as well as less activated dialkyl phosphates. HJ1 is also effective in the cleavage of an RNA-mimic substrate, uridine-3'-2,2,2-trichloroethyl phosphate (leaving group pK(a) = 12.3) with a second-order rate constant of 8.23x10(-4) M(-1) s(-1) in aqueous solution at pH 7.0, some 500 times faster than the reaction catalyzed by imidazole, k(2)(HJ1)/k(2)(Im) = 496.
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Affiliation(s)
- Jesus Razkin
- Department of Applied Chemistry, Public University of Navarra, 31006 Pamplona, Navarra, Spain.
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Bianké G, Häner R. Hairpin mimics with phenanthroline- and bipyridine-derived linkers. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2008; 26:949-52. [PMID: 18058515 DOI: 10.1080/15257770701508026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The synthesis and structural stabilities of modified oligonucleotide hairpins containing phenanthroline- and bipyridine-modified loops is reported. Phenanthroline (phen) and bipyridine (bipy) building blocks were synthesized, incorporated into DNA-oligonucleotides, and analyzed by thermal denaturation experiments. The so modified oligomers were found to form stable hairpin structures. Tm values were not affected by divalent transition metals.
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Affiliation(s)
- Gapian Bianké
- Department of Chemistry, Biochemistry, University of Bern, Bern, Switzerland
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Chaudhary A, Singh R. Review: Metal Complexes of Polyaza and Polyoxaaza Macrocyclic Ligands: A Look into the Past and Present Work. REV INORG CHEM 2008. [DOI: 10.1515/revic.2008.28.1.35] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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16
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Li YG, Shi DH, Zhu HL, Yan H, Ng SW. Transition metal complexes (M=Cu, Ni and Mn) of Schiff-base ligands: Syntheses, crystal structures, and inhibitory bioactivities against urease and xanthine oxidase. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2007.02.019] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Patroniak V, Hnatejko Z, Grochowska AM, Stefankiewicz AR. Luminescense properties of new complexes of Eu(III) and Tb(III) with heterotopic ligands. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2006; 64:830-4. [PMID: 16442840 DOI: 10.1016/j.saa.2005.08.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2005] [Revised: 05/25/2005] [Accepted: 08/16/2005] [Indexed: 05/06/2023]
Abstract
As a result of coordination between ligands L and L' and europium(III) and terbium(III) ions, the new architectures were formed. The formulae of the complexes have been assigned on the basis of the spectroscopic data in solution and microanalyses. The europium complexes show excellent luminescence properties with high quantum yield (1b-Eu(3)L(2)) and effective intramolecular energy transfer from the ligand to the Eu(III) ions.
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Affiliation(s)
- Violetta Patroniak
- Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60780 Poznań, Poland.
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Patroniak V, Stefankiewicz AR, Lehn JM, Kubicki M, Hoffmann M. Self-Assembly and Characterization of Homo- and Heterodinuclear Complexes of Zinc(II) and Lanthanide(III) Ions with a Tridentate Schiff-Base Ligand. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200500699] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Radecka-Paryzek W, Patroniak V, Lisowski J. Metal complexes of polyaza and polyoxaaza Schiff base macrocycles. Coord Chem Rev 2005. [DOI: 10.1016/j.ccr.2005.02.021] [Citation(s) in RCA: 214] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
Mimicking the action of enzymes by simpler and more robust man-made catalysts has long inspired bioorganic chemists. During the past decade, mimics for RNA-cleaving enzymes, ribonucleases, or, more precisely, mimics of ribozymes that cleave RNA in sequence-selective rather than base-selective manner, have received special attention. These artificial ribonucleases are typically oligonucleotides (or their structural analogs) that bear a catalytically active conjugate group and catalyze sequence-selective hydrolysis of RNA phosphodiester bonds.
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Affiliation(s)
- Teija Niittymäki
- Department of Chemistry, University of Turku, FIN-20014, Turku, Finland
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Patroniak V, Baxter P, Lehn JM, Hnatejko Z, Kubicki M. Synthesis and Luminescence Properties of New Dinuclear Complexes of Lanthanide(III) Ions. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200300868] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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22
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Zelder FH, Mokhir AA, Krämer R. Sequence selective hydrolysis of linear DNA using conjugates of Zr(IV) complexes and peptide nucleic acids. Inorg Chem 2004; 42:8618-20. [PMID: 14686836 DOI: 10.1021/ic034896v] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of conjugates of peptide nucleic acids (PNA) and Zr(IV) complexes was prepared. Their ability to hydrolyze DNA was tested using MALDI-TOF mass spectrometry and HPLC. The most efficient artificial restriction enzyme found, PNA conjugate with Zr(IV) complex of tris(hydroxymethyl)-aminomethane, cleaves DNA targets sequence selectively in close proximity to the Zr(IV) complex. It was demonstrated that cleavage products are substrates of terminal transferase.
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Affiliation(s)
- Felix H Zelder
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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Patroniak V, Kubicki M, Mondry A, Lisowski J, Radecka-Paryzek W. Pentaaza macrocyclic ytterbium(iii) complex and solvent controlled supramolecular self-assembly of its dimeric μ-η2:η2peroxo-bridged derivatives. Dalton Trans 2004:3295-304. [PMID: 15483714 DOI: 10.1039/b408157a] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The unprecedented template action of ytterbium ion in the synthesis of pentaaza macrocyclic Schiff bases is exemplified by isolation and definitive identification of the seven-coordinate pentagonal bipyramidal complex with the formula of [YbLCl(2)]ClO(4) (1), where L is 2,14-dimethyl-3,6,10,13,19-pentaazabicyclo[13.3.1]nonadeca-1(19),2,13,15,17-pentaene, providing the first example of crystallographically characterized pentaaza macrocyclic ytterbium complex. For the first time the spectrum of the (2)F(7/2) --> (2)F(5/2) transition has been obtained for a molecular complex of ytterbium with organic ligands in which all ligand-field components of the ground and excited state are well displayed at room temperature. This complex is capable of forming a dimeric peroxo Yb(2)(mu-eta(2):eta(2)-O(2))L(2)(4+) (2) derivative containing the biologically significant planar side-on doubly bidentate coordination mode of the peroxide. Inclusion of the appropriate solvent molecule into the crystal structure generates supramolecular architectures (2a-d) in which the solvent controlled self-assembly is observed. Spectral properties of these complexes were found to be very important and promising in the area of ytterbium physicochemistry.
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DNA and RNA Cleavage Mediated by Phenanthroline-Cuprous Oligonucleotides: From Properties to Applications. ARTIFICIAL NUCLEASES 2004. [DOI: 10.1007/978-3-642-18510-6_13] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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The template synthesis and characterization of pentaaza macrocyclic complexes of rare earth elements. The crystal structure of the 2,14-dimethyl-3,6,10,13,19-pentaazabicyclo[13.3.1]nonadeca-1(19),2,13,15,17-pentaene-dichlorolutetium(III)perchlorate. Polyhedron 2003. [DOI: 10.1016/s0277-5387(03)00398-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sakamoto S, Tamura T, Furukawa T, Komatsu Y, Ohtsuka E, Kitamura M, Inoue H. Highly efficient catalytic RNA cleavage by the cooperative action of two Cu(II) complexes embodied within an antisense oligonucleotide. Nucleic Acids Res 2003; 31:1416-25. [PMID: 12595549 PMCID: PMC149831 DOI: 10.1093/nar/gkg238] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2002] [Revised: 01/06/2003] [Accepted: 01/06/2003] [Indexed: 11/12/2022] Open
Abstract
Based on our recent studies of RNA cleavage by oligonucleotide-terpyridine.Cu(II) complex 5'- and/or 3'-conjugates, we designed 2'-O-methyloligonucleotides with two terpyridine-attached nucleosides at contiguous internal sites. To connect the 2'-terpyridine-modified uridine residue at the 5'-side to the 5'-O-terpyridyl nucleoside residue at the 3'-side, a dimethoxytrityl derivative of 5-hydroxypropyl-5'-O-terpyridyl-2'-deoxyuridine-3'-phosphoramidite was newly synthesized. Using this unit, we constructed two terpyridine conjugates, with either an unusual phophodiester bond or the bond extended by a propanediol(s)-containing linker. Cleavage reactions of the target RNA oligomer, under the conditions of conjugate excess in the presence of Cu(II), indicated that the conjugates precisely cleaved the RNA at the predetermined site and that one propanediol-containing linker was the most appropriate for inducing high cleavage activity. Furthermore, a comparison of the activity of the propanediol agent with those of the control conjugates with one complex confirmed that the two complexes are required for efficient RNA cleavage. The reaction of the novel cleaver revealed a bell-shaped pH-rate profile with a maximum at pH approximately 7.5, which is a result of the cooperative action of the complexes. In addition, we demonstrated that the agent catalytically cleaves an excess of the RNA, with the kinetic parameter kcat/K(m) = 0.118 nM(-1) x h(-1).
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Affiliation(s)
- Satoshi Sakamoto
- Department of Applied and Bioapplied Chemistry, Graduate School of Engineering, Osaka City University, Sugimoto 3-3-138, Sumiyoshi-ku, Osaka 558-8585, Japan
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27
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Manoharan M. Oligonucleotide conjugates as potential antisense drugs with improved uptake, biodistribution, targeted delivery, and mechanism of action. ANTISENSE & NUCLEIC ACID DRUG DEVELOPMENT 2002; 12:103-28. [PMID: 12074364 DOI: 10.1089/108729002760070849] [Citation(s) in RCA: 146] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
This review summarizes the effect of conjugating small molecules and large biomacromolecules to antisense oligonucleotides to improve their therapeutic potential. In many cases, favorable changes in pharmacokinetic and pharmacodynamic properties were observed. Opportunities exist to change the terminating mechanism of antisense action or to enhance the RNase H mode of action via conjugate formation.
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Affiliation(s)
- Muthiah Manoharan
- Department of Medicinal Chemistry, Isis Pharmaceuticals, Inc, Carlsbad, CA 92008, USA.
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28
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Zenkova M, Beloglazova N, Sil'nikov V, Vlassov V, Giegé R. RNA cleavage by 1,4-diazabicyclo[2.2.2]octane-imidazole conjugates. Methods Enzymol 2002; 341:468-90. [PMID: 11582799 DOI: 10.1016/s0076-6879(01)41171-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Affiliation(s)
- M Zenkova
- Laboratory of Nucleic Acids Biochemistry, Novosibirsk Institute of Bioorganic Chemistry, Novosibirsk-90, 630090, Russia
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29
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Putnam WC, Daniher AT, Trawick BN, Bashkin JK. Efficient new ribozyme mimics: direct mapping of molecular design principles from small molecules to macromolecular, biomimetic catalysts. Nucleic Acids Res 2001; 29:2199-204. [PMID: 11353090 PMCID: PMC55460 DOI: 10.1093/nar/29.10.2199] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2000] [Revised: 01/29/2001] [Accepted: 03/10/2001] [Indexed: 11/13/2022] Open
Abstract
Dramatic improvements in ribozyme mimics have been achieved by employing the principles of small molecule catalysis to the design of macromolecular, biomimetic reagents. Ribozyme mimics derived from the ligand 2,9-dimethylphenanthroline (neocuproine) show at least 30-fold improvements in efficiency at sequence-specific RNA cleavage when compared with analogous o-phenanthroline- and terpyridine-derived reagents. The suppression of hydroxide-bridged dimers and the greater activation of coordinated water by Cu(II) neocuproine (compared with the o-phenanthroline and terpyridine complexes) better allow Cu(II) to reach its catalytic potential as a biomimetic RNA cleavage agent. This work demonstrates the direct mapping of molecular design principles from small-molecule cleavage to macromolecular cleavage events, generating enhanced biomimetic, sequence-specific RNA cleavage agents.
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Affiliation(s)
- W C Putnam
- Department of Chemistry, Washington University, St Louis, MO 63130-4899, USA
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30
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Beloglazova NG, Sil'nikov VN, Zenkova MA, Vlassov VV. Cleavage of yeast tRNAPhe with complementary oligonucleotide conjugated to a small ribonuclease mimic. FEBS Lett 2000; 481:277-80. [PMID: 11007978 DOI: 10.1016/s0014-5793(00)02029-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
An oligonucleotide conjugate bearing a chemical construct mimicking the catalytic center of ribonuclease A has been designed and studied. The conjugate efficiently cleaves yeast tRNAPhe at a single site adjacent to the target complementary sequence.
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Affiliation(s)
- N G Beloglazova
- Institute of Bioorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 8 Lavrentiev Avenue, 630090, Novosibirsk, Russia
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31
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Neodymium cations Nd3+ were transported to the interior ofEuglena gracilis 277. ACTA ACUST UNITED AC 2000. [DOI: 10.1007/bf02886032] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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32
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Verheijen JC, Deiman BALM, Yeheskiely E, van der Marel GA, van Boom JH. Efficient Hydrolysis of RNA by a PNA – Diethylenetriamine Adduct. Angew Chem Int Ed Engl 2000. [DOI: 10.1002/(sici)1521-3757(20000117)112:2<377::aid-ange377>3.0.co;2-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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33
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Baker BF, Monia BP. Novel mechanisms for antisense-mediated regulation of gene expression. BIOCHIMICA ET BIOPHYSICA ACTA 1999; 1489:3-18. [PMID: 10806993 DOI: 10.1016/s0167-4781(99)00146-3] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- B F Baker
- Department of Molecular Pharmacology, Isis Pharmaceuticals, Carlsbad, CA 92008, USA
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34
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Renaud F, Piguet C, Bernardinelli G, Bünzli JCG, Hopfgartner G. Nine-Coordinate Lanthanide Podates with Predetermined Structural and Electronic Properties: Facial Organization of Unsymmetrical Tridentate Binding Units by a Protonated Covalent Tripod. J Am Chem Soc 1999. [DOI: 10.1021/ja990898w] [Citation(s) in RCA: 110] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fabien Renaud
- Contribution from the Department of Inorganic, Analytical and Applied Chemistry and the Laboratory of X-ray Crystallography, University of Geneva, CH-1211 Geneva 4, Switzerland, the Institute of Inorganic and Analytical Chemistry, University of Lausanne, CH-1015 Lausanne, Switzerland, and the Pharmaceuticals Division, F. Hoffmann-La Roche Ltd, CH-4070 Basle, Switzerland
| | - Claude Piguet
- Contribution from the Department of Inorganic, Analytical and Applied Chemistry and the Laboratory of X-ray Crystallography, University of Geneva, CH-1211 Geneva 4, Switzerland, the Institute of Inorganic and Analytical Chemistry, University of Lausanne, CH-1015 Lausanne, Switzerland, and the Pharmaceuticals Division, F. Hoffmann-La Roche Ltd, CH-4070 Basle, Switzerland
| | - Gérald Bernardinelli
- Contribution from the Department of Inorganic, Analytical and Applied Chemistry and the Laboratory of X-ray Crystallography, University of Geneva, CH-1211 Geneva 4, Switzerland, the Institute of Inorganic and Analytical Chemistry, University of Lausanne, CH-1015 Lausanne, Switzerland, and the Pharmaceuticals Division, F. Hoffmann-La Roche Ltd, CH-4070 Basle, Switzerland
| | - Jean-Claude G. Bünzli
- Contribution from the Department of Inorganic, Analytical and Applied Chemistry and the Laboratory of X-ray Crystallography, University of Geneva, CH-1211 Geneva 4, Switzerland, the Institute of Inorganic and Analytical Chemistry, University of Lausanne, CH-1015 Lausanne, Switzerland, and the Pharmaceuticals Division, F. Hoffmann-La Roche Ltd, CH-4070 Basle, Switzerland
| | - Gérard Hopfgartner
- Contribution from the Department of Inorganic, Analytical and Applied Chemistry and the Laboratory of X-ray Crystallography, University of Geneva, CH-1211 Geneva 4, Switzerland, the Institute of Inorganic and Analytical Chemistry, University of Lausanne, CH-1015 Lausanne, Switzerland, and the Pharmaceuticals Division, F. Hoffmann-La Roche Ltd, CH-4070 Basle, Switzerland
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35
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Bioinorganic models for the catalytic cooperation of metal ions and functional groups in nuclease and peptidase enzymes. Coord Chem Rev 1999. [DOI: 10.1016/s0010-8545(98)00235-5] [Citation(s) in RCA: 155] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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36
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Functional model complexes for dinuclear phosphoesterase enzymes. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s1062-239x(99)80032-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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37
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Trawick BN, Daniher AT, Bashkin JK. Inorganic Mimics of Ribonucleases and Ribozymes: From Random Cleavage to Sequence-Specific Chemistry to Catalytic Antisense Drugs. Chem Rev 1998; 98:939-960. [PMID: 11848920 DOI: 10.1021/cr960422k] [Citation(s) in RCA: 220] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Bobby N. Trawick
- Department of Chemistry, Washington University, St. Louis, Missouri 63130
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