1
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Kumar V, Turnbull WB, Kumar A. Review on Recent Developments in Biocatalysts for Friedel–Crafts Reactions. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Vajinder Kumar
- Department of Chemistry, Akal University, Talwandi Sabo, Bathinda, Punjab 151302, India
| | - W. Bruce Turnbull
- School of Chemistry and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, U.K
| | - Avneesh Kumar
- Department of Botany, Akal University, Talwandi Sabo, Bathinda, Punjab 151302, India
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2
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Ren L, Gao Y, Cheng Y. A manganese (II)-based coordinative dendrimer with robust efficiency in intracellular peptide delivery. Bioact Mater 2021; 9:44-53. [PMID: 34820554 PMCID: PMC8586439 DOI: 10.1016/j.bioactmat.2021.08.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 08/03/2021] [Accepted: 08/05/2021] [Indexed: 12/12/2022] Open
Abstract
Peptides have gained increasing interests as drug candidates in modern pharmaceutical industry, however, the development of peptide drugs acting on intracellular targets is limited due to their membrane impermeability. Here, we reported the use of metal-terpyridine based coordinative dendrimer for cytosolic peptide delivery. Among the investigated transition metal ions, Mn2+-coordinated polymer showed the highest delivery efficiency due to balanced peptide binding and release. It showed robust efficiency in the delivery of peptides with different charge property and hydrophobicity into various primary cells. The efficiency of Mn2+-terpyridine based polymer is superior to cell penetrating peptides such as oligoarginines. The material also delivered an autophagy-inducing peptide derived from Beclin-1 into cells and efficiently induced autophagy in the cells. This study provides a promising alternative to cell penetrating peptides for cytosolic peptide delivery. A Mn2+/terpyridine based polymer is rationally designed for cytosolic peptide delivery. The polymer shows robust efficiency in the delivery of 22 peptides with different properties into various primary cells. The polymer delivers an autophagy-inducing peptide derived from Beclin-1 into cells and efficiently induces autophagy. This study provides a promising alternative to cell penetrating peptides for cytosolic peptide delivery.
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Affiliation(s)
- Lanfang Ren
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Yang Gao
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Yiyun Cheng
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, China
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3
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Learte‐Aymamí S, Rodríguez J, Vázquez ME, Mascareñas JL. Assembly of a Ternary Metallopeptide Complex at Specific DNA Sites Mediated by an AT‐Hook Adaptor. Chemistry 2020; 26:8875-8878. [DOI: 10.1002/chem.202001277] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Indexed: 12/25/2022]
Affiliation(s)
- Soraya Learte‐Aymamí
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) andDepartamento de Química OrgánicaUniversidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Jéssica Rodríguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) andDepartamento de Química OrgánicaUniversidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - M. Eugenio Vázquez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) andDepartamento de Química OrgánicaUniversidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - José L. Mascareñas
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) andDepartamento de Química OrgánicaUniversidade de Santiago de Compostela 15782 Santiago de Compostela Spain
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4
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Geng L, Yu X, Li Y, Wang Y, Wu Y, Ren J, Xue F, Yi T. Instant hydrogel formation of terpyridine-based complexes triggered by DNA via non-covalent interaction. NANOSCALE 2019; 11:4044-4052. [PMID: 30768104 DOI: 10.1039/c8nr08532c] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Biomolecule-based hydrogels have potential use in a wide range of applications such as controlled drug release, tissue engineering, and biofabrication. Herein, driven by specific interactions between ds-DNA (double-stranded DNA) and Zn2+ based metal-complexes, we report that the use of DNA as cross-linkers can enhance interactions between self-assembling Zn2+ complexes containing terpyridine and sugar groups in the generation of bioinspired hydrogels from solutions or suspensions. The gelation process is fast and straightforward without tedious steps and happens at room temperature. Such a hydrogelation process of different Zn2+ complexes endows the visualized and selective DNA analogue discrimination. Several experiments suggest that the strong intercalation binding of Zn2+ complexes with ds-DNA results in the unzipping of ds-DNA into ss-DNA (single-stranded DNA), which further behave as linkers to enhance the intermolecular interactions of self-assembling Zn2+ complex molecules via coordination interactions. This work demonstrates an efficient and universal strategy to prepare hydrogels based on biomolecular recognition. Moreover, the DNA responsive behaviors of Zn2+ complexes are further compared with that of solutions and cells.
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Affiliation(s)
- Lijun Geng
- College of Science, and Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Yuhua Road 70, Shijiazhuang 050080, PR China.
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5
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Mansot J, Aubert S, Duchemin N, Vasseur JJ, Arseniyadis S, Smietana M. A rational quest for selectivity through precise ligand-positioning in tandem DNA-catalysed Friedel-Crafts alkylation/asymmetric protonation. Chem Sci 2019; 10:2875-2881. [PMID: 30996865 PMCID: PMC6429601 DOI: 10.1039/c8sc05543b] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 01/22/2019] [Indexed: 12/28/2022] Open
Abstract
We report here a highly selective copper(II)-catalysed asymmetric Friedel–Crafts conjugate addition/enantioselective protonation, which owes to a careful positioning of a bipyridine ligand within a DNA framework.
Covalent anchorage of a metallic co-factor to a DNA-based architecture is merely the only way to ensure an accurate positioning of a catalytic site within the chiral micro-environment offered by the DNA double helix. Ultimately, it also allows a fine-tuning of the catalytic pocket through simple synthetic modifications of the DNA sequence. Here, we report highly selective copper(ii)-catalysed asymmetric Friedel–Crafts conjugate addition/enantioselective protonation, which is due to a careful positioning of a bipyridine ligand within a DNA framework. Most importantly, this study unveils specific structural features that account for an optimal chirality transfer from the duplex to the Friedel–Crafts adducts.
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Affiliation(s)
- Justine Mansot
- Institut des Biomolécules Max Mousseron , CNRS , Université de Montpellier , ENSCM , Place Eugène Bataillon , 34095 Montpellier , France .
| | - Sidonie Aubert
- School of Biological and Chemical Sciences , Queen Mary University of London , Joseph Priestley Building, Mile End Road , London E1 4NS , UK .
| | - Nicolas Duchemin
- School of Biological and Chemical Sciences , Queen Mary University of London , Joseph Priestley Building, Mile End Road , London E1 4NS , UK .
| | - Jean-Jacques Vasseur
- Institut des Biomolécules Max Mousseron , CNRS , Université de Montpellier , ENSCM , Place Eugène Bataillon , 34095 Montpellier , France .
| | - Stellios Arseniyadis
- School of Biological and Chemical Sciences , Queen Mary University of London , Joseph Priestley Building, Mile End Road , London E1 4NS , UK .
| | - Michael Smietana
- Institut des Biomolécules Max Mousseron , CNRS , Université de Montpellier , ENSCM , Place Eugène Bataillon , 34095 Montpellier , France .
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6
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Ishutkina MV, Berry AR, Hussain R, Khelevina OG, Siligardi G, Stulz E. Self-Assembled Porphyrazine Nucleosides on DNA Templates: Highly Fluorescent Chromophore Arrays and Sizing Forensic Tandem Repeat Sequences. European J Org Chem 2018; 2018:5054-5059. [PMID: 30333712 PMCID: PMC6174987 DOI: 10.1002/ejoc.201800683] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Indexed: 12/15/2022]
Abstract
The formation of chromophore arrays using a DNA templating approach leads to the creation of supramolecular assemblies, where the optical properties of the overall system can be fine-tuned to a large extent. In particular, porphyrin derivatives have been shown to be versatile building blocks; mostly covalent chemistry was used for embedding the units into DNA strands. Self-assembly of porphyrin modified nucleosides, on the other hand, has not been investigated as a simplified approach. We report on the synthesis of a magnesium(II) tetraaza porphine (MgTAP) coupled to deoxyuridine, and array formation on DNA templates which contain well-defined oligo(dA) segments showing strong fluorescence enhancement which is significantly larger than that with a Zn-porphyrin. The use of the deep-eutectic solvent glycholine is essential for successful assembly formation. The system allows for sizing of short tandem repeat markers with multiple adenosines, thus the concept could be adaptable to in vitro forensic DNA profiling with a suitable set of different chromophores on all nucleosides.
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Affiliation(s)
- Mariia V. Ishutkina
- Department of Organic ChemistryIvanovo State University of Chemistry and TechnologySheremetev Av. 7RF‐153000IvanovoRussia
| | - Alice R. Berry
- School of Chemistry & Institute for Life SciencesUniversity of SouthamptonHighfieldSO17 1BJSouthamptonUK
| | - Rohanah Hussain
- Diamond Light SourceHarwell Science and Innovation CampusDidcotOX11 0DEOxfordshireUK
| | - Olga G. Khelevina
- Department of Organic ChemistryIvanovo State University of Chemistry and TechnologySheremetev Av. 7RF‐153000IvanovoRussia
| | - Giuliano Siligardi
- Diamond Light SourceHarwell Science and Innovation CampusDidcotOX11 0DEOxfordshireUK
| | - Eugen Stulz
- School of Chemistry & Institute for Life SciencesUniversity of SouthamptonHighfieldSO17 1BJSouthamptonUK
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7
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Hibino M, Aiba Y, Watanabe Y, Shoji O. Peptide Nucleic Acid Conjugated with Ruthenium-Complex Stabilizing Double-Duplex Invasion Complex Even under Physiological Conditions. Chembiochem 2018; 19:1601-1604. [PMID: 29797750 DOI: 10.1002/cbic.201800256] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Indexed: 02/03/2023]
Abstract
Peptide nucleic acid (PNA) can form a stable duplex with DNA, and, accordingly, directly recognize double-stranded DNA through the formation of a double-duplex invasion complex, wherein a pair of complementary PNA strands form two PNA/DNA duplexes. Because invasion does not require prior denaturation of DNA, PNA holds great potential for in cellulo or in vivo applications. To broaden the applicability of PNA invasion, we developed a new conjugate of PNA with a ruthenium complex. This Ru-PNA conjugate exhibits higher DNA-binding affinity, which results in enhanced invasion efficiency, even under physiological conditions.
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Affiliation(s)
- Masaki Hibino
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-Cho Chikusa-Ku, Nagoya, Aichi, 464-8602, Japan
| | - Yuichiro Aiba
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-Cho Chikusa-Ku, Nagoya, Aichi, 464-8602, Japan
| | - Yoshihito Watanabe
- Research Center for Materials Science, Nagoya University, Furo-Cho Chikusa-Ku, Nagoya, Aichi, 464-8602, Japan
| | - Osami Shoji
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-Cho Chikusa-Ku, Nagoya, Aichi, 464-8602, Japan
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8
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Liu T, Liu K, Zhang J, Wang Z. Terpyridine Functionalized Oligothiophene: Cadmium(II) Ion Sensing via
Visualization and Fluorescence. ChemistrySelect 2018. [DOI: 10.1002/slct.201800841] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Taihong Liu
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education; School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062, P. R. China
| | - Ke Liu
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education; School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062, P. R. China
| | - Jinling Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education; School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062, P. R. China
| | - Zhaolong Wang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education; School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062, P. R. China
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9
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Ejlersen M, Christensen NJ, Sørensen KK, Jensen KJ, Wengel J, Lou C. Synergy of Two Highly Specific Biomolecular Recognition Events: Aligning an AT-Hook Peptide in DNA Minor Grooves via Covalent Conjugation to 2'-Amino-LNA. Bioconjug Chem 2018; 29:1025-1029. [PMID: 29505242 DOI: 10.1021/acs.bioconjchem.8b00101] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two highly specific biomolecular recognition events, nucleic acid duplex hybridization and DNA-peptide recognition in the minor groove, were coalesced in a miniature ensemble for the first time by covalently attaching a natural AT-hook peptide motif to nucleic acid duplexes via a 2'-amino-LNA scaffold. A combination of molecular dynamics simulations and ultraviolet thermal denaturation studies revealed high sequence-specific affinity of the peptide-oligonucleotide conjugates (POCs) when binding to complementary DNA strands, leveraging the bioinformation encrypted in the minor groove of DNA duplexes. The significant cooperative DNA duplex stabilization may pave the way toward further development of POCs with enhanced affinity and selectivity toward target sequences carrying peptide-binding genetic islands.
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Affiliation(s)
- Maria Ejlersen
- Biomolecular Nanoscale Engineering Center, Department of Physics, Chemistry and Pharmacy , University of Southern Denmark , Campusvej 55 , 5230 Odense M , Denmark
| | - Niels Johan Christensen
- Biomolecular Nanoscale Engineering Center, Department of Chemistry , University of Copenhagen , Thorvaldsensvej 40 , 1871 Frederiksberg , Denmark
| | - Kasper K Sørensen
- Biomolecular Nanoscale Engineering Center, Department of Chemistry , University of Copenhagen , Thorvaldsensvej 40 , 1871 Frederiksberg , Denmark
| | - Knud J Jensen
- Biomolecular Nanoscale Engineering Center, Department of Chemistry , University of Copenhagen , Thorvaldsensvej 40 , 1871 Frederiksberg , Denmark
| | - Jesper Wengel
- Biomolecular Nanoscale Engineering Center, Department of Physics, Chemistry and Pharmacy , University of Southern Denmark , Campusvej 55 , 5230 Odense M , Denmark
| | - Chenguang Lou
- Biomolecular Nanoscale Engineering Center, Department of Physics, Chemistry and Pharmacy , University of Southern Denmark , Campusvej 55 , 5230 Odense M , Denmark
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10
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Learte-Aymamí S, Curado N, Rodríguez J, Vázquez ME, Mascareñas JL. Metal-Dependent DNA Recognition and Cell Internalization of Designed, Basic Peptides. J Am Chem Soc 2017; 139:16188-16193. [PMID: 29056048 PMCID: PMC5741177 DOI: 10.1021/jacs.7b07422] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Indexed: 12/18/2022]
Abstract
A fragment of the DNA basic region (br) of the GCN4 bZIP transcription factor has been modified to include two His residues at designed i and i+4 positions of its N-terminus. The resulting monomeric peptide (brHis2) does not bind to its consensus target DNA site (5'-GTCAT-3'). However, addition of Pd(en)Cl2 (en, ethylenediamine) promotes a high-affinity interaction with exquisite selectivity for this sequence. The peptide-DNA complex is disassembled by addition of a slight excess of a palladium chelator, and the interaction can be reversibly switched multiple times by playing with controlled amounts of either the metal complex or the chelator. Importantly, while the peptide brHis2 fails to translocate across cell membranes on its own, addition of the palladium reagent induces an efficient cell internalization of this peptide. In short, we report (1) a designed, short peptide that displays highly selective, major groove DNA binding, (2) a reversible, metal-dependent DNA interaction, and (3) a metal-promoted cell internalization of this basic peptide.
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Affiliation(s)
- Soraya Learte-Aymamí
- Centro Singular de Investigación
en Química Biolóxica e Materiais Moleculares (CIQUS)
and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Natalia Curado
- Centro Singular de Investigación
en Química Biolóxica e Materiais Moleculares (CIQUS)
and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Jéssica Rodríguez
- Centro Singular de Investigación
en Química Biolóxica e Materiais Moleculares (CIQUS)
and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - M. Eugenio Vázquez
- Centro Singular de Investigación
en Química Biolóxica e Materiais Moleculares (CIQUS)
and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - José L. Mascareñas
- Centro Singular de Investigación
en Química Biolóxica e Materiais Moleculares (CIQUS)
and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
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11
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Sánchez MI, Mosquera J, Vázquez ME, Mascareñas JL. Reversible Supramolecular Assembly at Specific DNA Sites: Nickel-Promoted Bivalent DNA Binding with Designed Peptide and Bipyridyl-Bis(benzamidine) Components. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405726] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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12
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Sánchez MI, Mosquera J, Vázquez ME, Mascareñas JL. Reversible Supramolecular Assembly at Specific DNA Sites: Nickel-Promoted Bivalent DNA Binding with Designed Peptide and Bipyridyl-Bis(benzamidine) Components. Angew Chem Int Ed Engl 2014; 53:9917-21. [DOI: 10.1002/anie.201405726] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Indexed: 01/20/2023]
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13
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Gorczyński A, Wałęsa-Chorab M, Kubicki M, Korabik M, Patroniak V. New complexes of 6,6″-dimethyl-2,2′:6′,2″-terpyridine with Ni(II) ions: Synthesis, structure and magnetic properties. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.03.058] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Astakhova IK, Hansen LH, Vester B, Wengel J. Peptide-LNA oligonucleotide conjugates. Org Biomol Chem 2013; 11:4240-9. [PMID: 23681061 DOI: 10.1039/c3ob40786a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Although peptide-oligonucleotide conjugates (POCs) are well-known for nucleic acids delivery and therapy, reports on internal attachment of peptides to oligonucleotides are limited in number. To develop a convenient route for preparation of internally labeled POCs with improved biomedical properties, peptides were introduced into oligonucleotides via a 2'-alkyne-2'-amino-LNA scaffold. Derivatives of methionine- and leucine-enkephalins were chosen as model peptides of mixed amino acid content, which were singly and doubly incorporated into LNA/DNA strands using highly efficient copper(i)-catalyzed azide-alkyne cycloaddition (CuAAC) "click" chemistry. DNA/RNA target binding affinity and selectivity of the resulting POCs were improved in comparison to LNA/DNA mixmers and unmodified DNA controls. This clearly demonstrates that internal attachment of peptides to oligonucleotides can significantly improve biomolecular recognition by synthetic nucleic acid analogues. Circular dichroism (CD) measurements showed no distortion of the duplex structure by the incorporated peptide chains while studies in human serum indicated superior stability of the POCs compared to LNA/DNA mixmers and unmodified DNA references. Molecular modeling suggests strong interactions between positively charged regions of the peptides and the negative oligonucleotide backbones which leads to clamping of the peptides in a fixed orientation along the duplexes.
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Affiliation(s)
- I Kira Astakhova
- Nucleic Acid Center and the Biomolecular Nanoscale Engineering Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark.
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15
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Golubev O, Lönnberg T, Lönnberg H. Metal-Ion-Binding Analogs of Ribonucleosides: Preparation and Formation of Ternary Pd2+and Hg2+Complexes with Natural Pyrimidine Nucleosides. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201300042] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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16
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Kalachova L, Pohl R, Bednárová L, Fanfrlík J, Hocek M. Synthesis of nucleosides and dNTPs bearing oligopyridine ligands linked through an octadiyne tether, their incorporation into DNA and complexation with transition metal cations. Org Biomol Chem 2013; 11:78-89. [PMID: 23090069 DOI: 10.1039/c2ob26881g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Modified nucleosides (dA(R)s and dC(R)s) bearing bipyridine or terpyridine ligands attached through an octadiyne linker were prepared by single-step aqueous-phase Sonogashira cross-coupling of 7-iodo-7-deaza-2'-deoxyadenosine and 5-iodo-2'-deoxycytidine with the corresponding bipyridine- or terpyridine-octadiynes and were triphosphorylated to the corresponding nucleoside triphosphates (dA(R)TPs and dC(R)TPs). The modified dN(R)TPs were successfully incorporated into the oligonucleotides by primer extension experiment (PEX) using different DNA polymerases and the PEX products were used for post-synthetic complexation with divalent metal cations. The complexation of these DNAs containing flexibly-tethered ligands was compared with the previously reported ones bearing rigid acetylene-linked ligands suggesting the possible formation of both inter- and intra-strand complexes with Ni(2+) or Fe(2+).
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Affiliation(s)
- Lubica Kalachova
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Gilead & IOCB Research Center, Flemingovo nam. 2, CZ-16610 Prague 6, Czech Republic
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17
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Wang G, Zhao Q, Kang X, Guan X. Probing mercury(II)-DNA interactions by nanopore stochastic sensing. J Phys Chem B 2013; 117:4763-9. [PMID: 23565989 DOI: 10.1021/jp309541h] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this work, DNA-Hg(II) interactions were investigated by monitoring the translocation of DNA hairpins in a protein ion channel in the absence and presence of metal ions. Our experiments demonstrate that target-specific hairpin structures could be stabilized much more significantly by mercuric ions than by the stem length and the loop size of the hairpin due to the formation of Thymine-Hg(II)-Thymine complexes. In addition, the designed DNA probe allows the development of a highly sensitive nanopore sensor for Hg(2+) with a detection limit of 25 nM. Further, the sensor is specific, and other tested metal ions including Pb(2+), Cu(2+), Cd(2+), and so on with concentrations of up to 2 orders of magnitude greater than that of Hg(2+) would not interfere with the mercury detection.
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Affiliation(s)
- Guihua Wang
- Department of Biological and Chemical Sciences, Illinois Institute of Technology, 3101 South Dearborn Street, Chicago, Illinois 60616, United States
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18
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Sorokin V, Valeev V, Usenko E, Rakovsky Y, Andrushchenko V. Specific features of Zn2+, Co2+ and Ni2+ ion binding to DNA in alkaline solutions. Int J Biol Macromol 2013; 55:137-41. [DOI: 10.1016/j.ijbiomac.2013.01.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 12/23/2012] [Accepted: 01/01/2013] [Indexed: 11/30/2022]
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19
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Yang C, Ma F, Tang J, Han L, Wei S, Zhou L, Zhou J, Shen J, Ge X. Comparing the interaction of vanadyl-hypocrellin A complex and hypocrellin A with CT DNA. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.09.081] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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20
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Taherpour S, Lönnberg H, Lönnberg T. 2,6-Bis(functionalized) purines as metal-ion-binding surrogate nucleobases that enhance hybridization with unmodified 2'-O-methyl oligoribonucleotides. Org Biomol Chem 2013; 11:991-1000. [PMID: 23283364 DOI: 10.1039/c2ob26885j] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The capacity of three different purine bases, viz. 2,6-bis(3,5-dimethylpyrazol-1-yl)purine, 2-(3,5-dimethylpyrazol-1-yl)adenine and 2,6-bis(2-acetyl-1-methylhydrazino)purine, to form metal-ion mediated base pairs with the native nucleobases has been examined. For this purpose, ribonucleosides derived from these bases were incorporated into an intrastrand or a 3'-terminal position of short 2'-O-methyl oligoribonucleotides and the hybridization properties of these base modified oligomers in the absence and presence of three different metal ions (Cu(2+), Zn(2+) and Pd(2+)) were studied by UV- and CD-spectrometry. The first two bases were found to stabilize short oligonucleotide duplexes when incorporated into the 3'-termini of both strands, even in the absence of divalent metal ions but especially in the presence of Cu(2+). The highest melting temperature determined for such a duplex was 71.8 °C, nearly 30 °C higher than the T(m) of the respective solely Watson-Crick paired duplex. Despite the dramatic stabilizing effect of the terminal metallo-base pairs, these short modified oligonucleotides retained sequence-selectivity for the internal Watson-Crick base pairs: two internal mismatches dropped the melting temperature to 10-11 °C. In an internal position, only 2,6-bis(3,5-dimethylpyrazol-1-yl)purine, which in the absence of metal ions was destabilizing, exhibited metal-ion-dependent stabilization of duplex formation with unmodified 2'-O-methyl oligoribonucleotides. The melting temperature in the presence of Cu(2+) was increased from 6 to 14 °C, depending on the identity of the opposite base.
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Affiliation(s)
- Sharmin Taherpour
- Department of Chemistry, University of Turku, FIN-20014Turku, Finland.
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21
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Madsen AS, Jørgensen AS, Jensen TB, Wengel J. Large scale synthesis of 2'-amino-LNA thymine and 5-methylcytosine nucleosides. J Org Chem 2012; 77:10718-28. [PMID: 23145501 DOI: 10.1021/jo302036h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Thymine intermediate 17 has been synthesized on a multigram scale (50 g, 70 mmol) from starting sugar 1 in 15 steps in an overall yield of 73%, with only 5 purification steps. The key thymine intermediate 18 was obtained from 17 in a single step in 96% yield, whereas the key 5-methylcytosine intermediate 20 was obtained from 17 in 2 steps in 58% yield. This highly efficient large scale route necessitates only 2 and 3 novel steps to obtain N2'-functionalized thymine and 5-methylcytosine amino-LNA phosphoramidites from these key intermediates, respectively.
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Affiliation(s)
- Andreas Stahl Madsen
- Nucleic Acid Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230 Odense M, Denmark
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22
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Morgan JR, Nguyen DVX, Frohman AR, Rybka SR, Zebala JA. Reversible metal-dependent destabilization and stabilization of a stem-chelate-loop probe binding to an unmodified DNA target. Bioconjug Chem 2012; 23:2020-4. [PMID: 22989029 DOI: 10.1021/bc3003293] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we report the discovery of a novel DNA probe with a stem-chelate-loop structure, wherein the stability of the probe-target duplex can be modulated lower or higher using a narrow concentration range of dilute transition metal ions (0.1-10 μM). Oligonucleotide probes containing two terpyridine (TPY) ligands separated by 15 bases of single-stranded DNA, with or without a flanking 5 base self-complementary DNA stem, were tested in thermal transition studies with linear target DNA and varying amounts of ZnCl(2). Without the stem, addition of Zn(2+) resulted only in reversible destabilization of the probe-target duplex, consistent with assembly (up to 1 equiv Zn(2+)) and disassembly (excess Zn(2+)) of the intramolecular Zn(2+)-(TPY)(2) chelate. Surprisingly, probes including both the intramolecular chelate and the stem gave a probe-target duplex that was reversibly destabilized and stabilized upon addition of Zn(2+) by ±5-7 °C, a phenomenon consistent with assembly and then disassembly of the entire stem-Zn(2+)-(TPY)(2) motif, including the DNA stem. Stem-chelate-loop probes containing dipicolylamine (DPA) ligands exhibited no metal-dependent stabilization or destabilization. The stem-Zn(2+)-(TPY)(2) motif is readily introduced with automated synthesis, and may have broad utility in applications where it is desirable to have both upward and downward, reversible metal-dependent control over probe-target stability involving an unmodified DNA target.
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Affiliation(s)
- Joel R Morgan
- Syntrix Biosystems, Inc., 215 Clay Street NW, Suite B-5, Auburn, WA 98001, USA.
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23
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Enzymatic polymerisation involving 2'-amino-LNA nucleotides. Bioorg Med Chem Lett 2012; 22:3522-6. [PMID: 22503454 DOI: 10.1016/j.bmcl.2012.03.073] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Revised: 03/19/2012] [Accepted: 03/21/2012] [Indexed: 11/21/2022]
Abstract
The triphosphate of the thymine derivative of 2'-amino-LNA (2'-amino-LNA-TTP) was synthesised and found to be a good substrate for Phusion® HF DNA polymerase, allowing enzymatic synthesis of modified DNA encoded by an unmodified template. To complement this, 2'-amino-LNA-T phosphoramidites were incorporated into DNA oligonucleotides which were used as templates for enzymatic synthesis of unmodified DNA using either KOD, KOD XL or Phusion polymerases. 2'-Amino-LNA-T in the template and 2'-amino-LNA-TTP as a substrate both decreased reaction rate and yield compared to unmodified DNA, especially for sequences with multiple 2'-amino-LNA-T nucleotides.
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24
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Patel MN, Dosi PA, Bhatt BS. Nucleic acid interaction and antibacterial behaviours of a ternary palladium(II) complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 86:508-514. [PMID: 22153744 DOI: 10.1016/j.saa.2011.10.077] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2011] [Revised: 10/22/2011] [Accepted: 10/28/2011] [Indexed: 05/31/2023]
Abstract
The bidentate ligands and Pd(II) complexes have been synthesized and characterized using elemental analysis (C, H, N), (1)H NMR, (13)C NMR, electronic spectra, FT-IR and FAB mass spectroscopy. The binding of palladium complexes with calf thymus DNA (CT DNA) has been explored using absorption titration, DNA melting temperature and viscosity measurements. The cleavage reaction on pUC19 DNA has been monitored by agarose gel electrophoresis. The results suggest that complexes can bind to DNA by intercalative modes and exhibit nuclease activities in which supercoil form is converted to open circular form. The antibacterial activity of ligands and complexes has been performed against three Gram(-ve) and two Gram(+ve) microorganisms and the study indicates that all the complexes show better microbial inhibition activity than ligands and palladium salt.
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Affiliation(s)
- Mohan N Patel
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar - 388 120 Gujarat, India.
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25
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Ehrenschwender T, Barth A, Puchta H, Wagenknecht HA. Metal-mediated DNA assembly using the ethynyl linked terpyridine ligand. Org Biomol Chem 2012; 10:46-8. [DOI: 10.1039/c1ob06421e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Kalachova L, Pohl R, Hocek M. Synthesis of nucleoside mono- and triphosphates bearing oligopyridine ligands, their incorporation into DNA and complexation with transition metals. Org Biomol Chem 2011; 10:49-55. [PMID: 22071986 DOI: 10.1039/c1ob06359f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Modified nucleoside mono- (dA(R)MPs and dC(R)MPs) and triphosphates (dA(R)TPs and dC(R)TPs) bearing bipyridine or terpyridine ligands attached via acetylene linker were prepared by single-step aqueous-phase Sonogashira cross-coupling of 7-iodo-7-deaza-dAMP or -dATP, and 5-iodo-dCMP or -dCTP with the corresponding bipyridine- or terpyridine-linked acetylenes. The modified dN(R)TPs were successfully incorporated into the oligonucleotides by primer extension experiment (PEX) using different DNA polymerases and the PEX products were used for post-synthetic complexation with Fe(2+).
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Affiliation(s)
- Lubica Kalachova
- Institute of Organic Chemistry and Biochemistry, Academy of Science of the Czech Republic, Gilead & IOCB Research Center, Flemingovo nam. 2, CZ-16610, Prague 6, Czech Republic
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27
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Burns JR, Zekonyte J, Siligardi G, Hussain R, Stulz E. Directed formation of DNA nanoarrays through orthogonal self-assembly. Molecules 2011; 16:4912-22. [PMID: 21677604 PMCID: PMC6264196 DOI: 10.3390/molecules16064912] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Revised: 05/31/2011] [Accepted: 06/10/2011] [Indexed: 01/12/2023] Open
Abstract
We describe the synthesis of terpyridine modified DNA strands which selectively form DNA nanotubes through orthogonal hydrogen bonding and metal complexation interactions. The short DNA strands are designed to self-assemble into long duplexes through a sticky-end approach. Addition of weakly binding metals such as Zn(II) and Ni(II) induces the formation of tubular arrays consisting of DNA bundles which are 50-200 nm wide and 2-50 nm high. TEM shows additional long distance ordering of the terpy-DNA complexes into fibers.
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Affiliation(s)
- Jonathan R. Burns
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK
| | - Jurgita Zekonyte
- National Centre for Advanced Tribology, School of Engineering Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, UK
| | - Giuliano Siligardi
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, UK
| | - Rohanah Hussain
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, UK
| | - Eugen Stulz
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK
- Author to whom correspondence should be addressed; ; Tel +44-2380-599369
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28
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Zhao P, Huang JW, Ji LN. Metal complexes of porphyrin–anthraquinone hybrids: DNA binding and photocleavage specificities. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.585641] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Ping Zhao
- a School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University , No. 280, Waihuandong Road, Education Mega Centre, Guangzhou 510006 , P.R. China
| | - Jin-Wang Huang
- b MOE Laboratory of Bioinorganic and Synthetic Chemistry , School of Chemistry and Chemical Engineering, Sun Yat-Sen University , No. 135, Xingangxi Road, Guangzhou 510275 , P.R. China
| | - Liang-Nian Ji
- b MOE Laboratory of Bioinorganic and Synthetic Chemistry , School of Chemistry and Chemical Engineering, Sun Yat-Sen University , No. 135, Xingangxi Road, Guangzhou 510275 , P.R. China
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29
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Hirva P, Nielsen A, Bond AD, McKenzie CJ. Potential cross-linking transition metal complexes (M = Ni, Cu, Zn) in the ligand-modified LNA duplexes. J Phys Chem B 2011; 114:11942-8. [PMID: 20726539 DOI: 10.1021/jp105528y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Options for interstrand DNA duplex linkages have been studied by incorporating transition metal ions in the ligand-functionalized LNA (locked nucleic acid) duplexes. The effect of first-row transition metal ions (M = Ni(2+), Cu(2+), and Zn(2+)) on the geometries and formation energies of mono- and dimetallic model complexes was calculated by DFT methods, and the results were compared with available experimental data. The results showed a clear preference for the formation of copper complexes over the corresponding nickel and zinc complexes, in agreement with the trends observed in the denaturation temperatures of the ligand-functionalized LNA duplexes. In addition, dichloride bridged dimeric complex, [L(LNA)Cu(μ-Cl)(2)CuL(LNA)](2+), in which L(LNA) is N,N-bis(2-pyridylmethyl)-β-alanyl functionalized LNA, was found energetically very stable, providing a potential structural option for an interstrand duplex linkage. The model complex and its simpler structural analogues were synthesized and structurally characterized. Comparison of the dimeric linker introduced into duplex tetramer strands, which provided a computational model for a double helix with two closely located LNA units, with a similar model for mononuclear Cu(L(LNA))(2)(2+) linker also showed a clear preference of the dichloride-bridged option, suggesting that the [L(LNA)Cu(μ-Cl)(2)CuL(LNA)](2+) complex produced a chemically realistic model to explain duplex stabilization in the presence of Cu(2+) and excess Cl(-).
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Affiliation(s)
- Pipsa Hirva
- Department of Chemistry, University of Eastern Finland, Joensuu Campus P.O. Box 111, FI-80101, Joensuu, Finland.
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30
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Stephenson AWI, Bomholt N, Partridge AC, Filichev VV. Significantly enhanced DNA thermal stability resulting from porphyrin H-aggregate formation in the minor groove of the duplex. Chembiochem 2011; 11:1833-9. [PMID: 20677201 DOI: 10.1002/cbic.201000326] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Adam W I Stephenson
- College of Sciences, Institute of Fundamental Sciences, Massey University, Private Bag 11-222, Palmerston North, New Zealand
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31
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Salvatore P, Glargaard Hansen A, Moth-Poulsen K, Bjørnholm T, John Nichols R, Ulstrup J. Voltammetry and in situscanning tunnelling spectroscopy of osmium, iron, and ruthenium complexes of 2,2′:6′,2′′-terpyridine covalently linked to Au(111)-electrodes. Phys Chem Chem Phys 2011; 13:14394-403. [DOI: 10.1039/c1cp21197h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Brewer A, Siligardi G, Neylon C, Stulz E. Introducing structural flexibility into porphyrin-DNA zipper arrays. Org Biomol Chem 2010; 9:777-82. [PMID: 21103551 DOI: 10.1039/c0ob00535e] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A more flexible nucleotide building block for the synthesis of new DNA based porphyrin-zipper arrays is described. Changing the rigid acetylene linker between the porphyrin substituent and the 2'-deoxyuridine to a more flexible propargyl amide containing linkage leads in part to an increased duplex stability. The CD spectra reveal different electronic interactions between the porphyrins depending on the type of linker used. Molecular modelling suggests large variation of the relative orientation of the porphyrins within the major groove of the DNA. The porphyrins can be metallated post-synthetically with different metals as shown with zinc, cobalt and copper. The spectroscopic features do not alter drastically upon metallation apart from the CD spectra, and the stability of the metal complex is highly dependent on the nature of the metal. As shown by CD spectroscopy, the zinc porphyrin is rapidly demetallated at high temperatures. Globular structure determination using SAXS indicates that a molecular assembly comprised of a two to four helical bundle dominates in solution at higher concentrations (≥50 μM) which is not observed by spectroscopy at lower concentrations (≤1 μM).
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Affiliation(s)
- Ashley Brewer
- School of Chemistry, University of Southampton, Highfield, Southampton, UK SO17 1BJ
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33
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Johannsen MW, Crispino L, Wamberg MC, Kalra N, Wengel J. Amino acids attached to 2'-amino-LNA: synthesis and excellent duplex stability. Org Biomol Chem 2010; 9:243-52. [PMID: 21049102 DOI: 10.1039/c0ob00532k] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of 2'-amino-LNA (the 2'-amino derivative of locked nucleic acid) has opened up a number of exciting possibilities with respect to modified nucleic acids. While maintaining the excellent duplex stability inferred by LNA-type oligonucleotides, the nitrogen in the 2'-position of 2'-amino-LNA monomers provides an excellent handle for functionalisation. Herein, the synthesis of amino acid functionalised 2'-amino-LNA derivatives is described. Following ON synthesis, a glycyl unit attached to the N2'-position of 2'-amino-LNA monomers was further acylated with a variety of amino acids. On binding to DNA/RNA complements, the modified ONs induce a marked increase in thermal stability, which is particularly apparent in a buffer system with a low salt concentration. The increase in thermal stability is thought to be caused, at least in part, by decreased electrostatic repulsion between the negatively charged phosphate backbones when positively charged amino acid residues are appended. Upon incorporation of more than one 2'-amino-LNA modification, the effects are found to be nearly additive. For comparison, 2'-amino-LNA derivatives modified with uncharged groups have been synthesised and their effect on duplex thermal stability likewise investigated.
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Affiliation(s)
- Marie W Johannsen
- Nucleic Acid Center, Department of Physics and Chemistry, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
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34
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DNA modified with metal complexes: Applications in the construction of higher order metal–DNA nanostructures. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2010.02.026] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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35
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Zhao P, Huang JW, Mei WJ, He J, Ji LN. DNA binding and photocleavage specificities of a group of tricationic metalloporphyrins. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 75:1108-1114. [PMID: 20093071 DOI: 10.1016/j.saa.2009.12.065] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2009] [Revised: 12/21/2009] [Accepted: 12/22/2009] [Indexed: 05/28/2023]
Abstract
The interactions of 5,10,15-tris(1-methylpyridinium-4-yl)-20-(4-hydroxyphenyl)porphyrinatozinc(II) Zn[TMPyHP](3+) (2) along with Cu[TMPyHP](3+) (3), Co[TMPyHP](4+) (4), Mn[TMPyHP](4+) (5) and the free base porphyrin H(2)[TMPyHP](3+) (1) with duplex DNA have been studied by using a combination of absorption, fluorescence titration, surface-enhanced Raman spectroscopy (SERS), induced circular dichroism (ICD) spectroscopy, thermal DNA denaturation, viscosity measurements as well as gel electrophoresis experiment. Their binding modes and intrinsic binding constants (K(b)) to calf DNA (CT DNA) were comparatively studied and were found significantly influenced by different metals coordinated with the porphyrin plane. Except 3, which has four-coordination structure at the metal, all the metal derivatives showed non-intercalative DNA-binding mode and lower K(b) than the free base porphyrin 1, most probably due to the steric hindrance results from the axial ligands of the inserted metals which are five or six-coordination structures. Meanwhile, the insertion of metals into cationic porphyrin greatly removed the self-aggregation of the metal-free porphyrins, and thus fully enhanced the singlet oxygen ((1)O(2)) productivities in the DNA photocleavage experiments. Therefore, these metalloporphyrins have comparable DNA cleavage ability with the free base porphyrin.
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Affiliation(s)
- Ping Zhao
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, PR China
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36
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Metal–bipyridine complexes in DNA backbones and effects on thermal stability. J Biol Inorg Chem 2010; 15:629-39. [DOI: 10.1007/s00775-010-0630-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2009] [Accepted: 01/22/2010] [Indexed: 10/19/2022]
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37
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Karlsen KK, Jensen TB, Wengel J. Synthesis of an unlocked nucleic acid terpyridine monomer and binding of divalent metal ion in nucleic acid duplexes. J Org Chem 2010; 74:8838-41. [PMID: 19863123 DOI: 10.1021/jo9019978] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein we present the synthesis and thermal stability studies of modified oligonucleotides containing an unlocked nucleic acid (UNA) terpyridine monomer. Incorporation of this monomer into both strands of a DNA duplex allowed reversible thermal stability modulation upon addition or withdrawal of divalent metal ions. A likely explanation of this phenomenon is interstrand complexation between two terpyridine units and a metal ion. This system could be useful in the development of nanoscale devices based on DNA hybridization.
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Affiliation(s)
- Kasper K Karlsen
- Nucleic Acid Center, Department of Physics and Chemistry, University of Southern Denmark, Odense, Denmark
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38
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Affiliation(s)
- Thomas Rühl
- a School of Chemistry , University of Southampton , Highfield, Southampton, SO17 1EW, UK
| | - Eugen Stulz
- a School of Chemistry , University of Southampton , Highfield, Southampton, SO17 1EW, UK
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39
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Yang H, Rys A, McLaughlin C, Sleiman H. Templated Ligand Environments for the Selective Incorporation of Different Metals into DNA. Angew Chem Int Ed Engl 2009; 48:9919-23. [DOI: 10.1002/anie.200904186] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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X-ray crystal structures of halogen containing nucleobase derivatives in unsolvated and DMSO solvated forms. Struct Chem 2009. [DOI: 10.1007/s11224-009-9570-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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41
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Yang H, Rys A, McLaughlin C, Sleiman H. Templated Ligand Environments for the Selective Incorporation of Different Metals into DNA. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200904186] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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42
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Kumar TS, Ostergaard ME, Sharma PK, Nielsen P, Wengel J, Hrdlicka PJ. Parallel RNA-strand recognition by 2'-amino-beta-L-LNA. Bioorg Med Chem Lett 2009; 19:2396-9. [PMID: 19356930 DOI: 10.1016/j.bmcl.2009.03.079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2009] [Revised: 03/18/2009] [Accepted: 03/20/2009] [Indexed: 10/21/2022]
Abstract
A short synthetic route to the first beta-l-ribo configured locked nucleic acid (LNA), that is, 2'-amino-beta-l-LNA thymine phosphoramidite 6, has been developed from bicyclic nucleoside 1. Incorporation of 2'-amino-beta-l-LNA thymine monomers into alpha-DNA strands results in probes forming stable duplexes with complementary RNA in parallel orientation.
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Affiliation(s)
- T Santhosh Kumar
- Nucleic Acid Center, Department of Physics and Chemistry, University of Southern Denmark, DK-5230 Odense M, Denmark
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43
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Umemoto T, Wengel J, Madsen AS. Functionalization of 2'-amino-LNA with additional nucleobases. Org Biomol Chem 2009; 7:1793-7. [PMID: 19590773 DOI: 10.1039/b901028a] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thymin-1-yl-acetic acid and adenin-9-yl-acetic acid have been coupled to the N2'-atom of a 2'-amino-LNA thymine nucleoside, and these "double-headed" LNA monomers have been incorporated into oligodeoxyribonucleotides via their corresponding phosphoramidite derivatives. Oligonucleotides containing these modified nucleotides show in most cases increased thermal stability when forming duplexes with complementary DNA, even allowing multiple incorporations. Incorporation of "double-headed" LNA monomers in both strands also led to stable duplexes, however, no indication of Watson-Crick base pairing between the extra nucleobases could be found.
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Affiliation(s)
- Tadashi Umemoto
- Nucleic Acid Center, Department of Physics and Chemistry, University of Southern Denmark, 5230 Odense M, Denmark
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44
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Nguyen T, Brewer A, Stulz E. Duplex Stabilization and Energy Transfer in Zipper Porphyrin-DNA. Angew Chem Int Ed Engl 2009; 48:1974-7. [DOI: 10.1002/anie.200805657] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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45
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Nguyen T, Brewer A, Stulz E. Duplex Stabilization and Energy Transfer in Zipper Porphyrin-DNA. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200805657] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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46
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Kumar TS, Madsen AS, Østergaard ME, Sau SP, Wengel J, Hrdlicka PJ. Functionalized 2'-amino-alpha-L-LNA: directed positioning of intercalators for DNA targeting. J Org Chem 2009; 74:1070-81. [PMID: 19108636 PMCID: PMC2853939 DOI: 10.1021/jo802037v] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Chemically modified oligonucleotides are increasingly applied in nucleic acid based therapeutics and diagnostics. LNA (locked nucleic acid) and its diastereomer alpha-L-LNA are two promising examples thereof that exhibit increased thermal and enzymatic stability. Herein, the synthesis, biophysical characterization, and molecular modeling of N2'-functionalized 2'-amino-alpha-L-LNA is described. Chemoselective N2'-functionalization of protected amino alcohol 1 followed by phosphitylation afforded a structurally varied set of target phosphoramidites, which were incorporated into oligodeoxyribonucleotides. Incorporation of pyrene-functionalized building blocks such as 2'-N-(pyren-1-yl)carbonyl-2'-amino-alpha-L-LNA (monomer X) led to extraordinary increases in thermal affinity of up to +19.5 degrees C per modification against DNA targets in particular. In contrast, incorporation of building blocks with small nonaromatic N2'-functionalities such as 2'-N-acetyl-2'-amino-alpha-L-LNA (monomer V) had detrimental effects on thermal affinity toward DNA/RNA complements with decreases of as much as -16.5 degrees C per modification. Extensive thermal DNA selectivity, favorable entropic contributions upon duplex formation, hybridization-induced bathochromic shifts of pyrene absorption maxima and increases in circular dichroism signal intensity, and molecular modeling studies suggest that pyrene-functionalized 2'-amino-alpha-L-LNA monomers W-Y having short linkers between the bicyclic skeleton and the pyrene moiety allow high-affinity hybridization with DNA complements and precise positioning of intercalators in nucleic acid duplexes. This rigorous positional control has been utilized for the development of probes for emerging therapeutic and diagnostic applications focusing on DNA targeting.
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Affiliation(s)
- T Santhosh Kumar
- Nucleic Acid Center, Department of Physics and Chemistry, University of Southern Denmark, DK-5230 Odense M, Denmark
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Santhosh Kumar T, Kumar P, Sharma PK, Hrdlicka PJ. Optimized synthesis of LNA uracil nucleosides. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.09.165] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Rahman SMA, Seki S, Obika S, Yoshikawa H, Miyashita K, Imanishi T. Design, synthesis, and properties of 2',4'-BNA(NC): a bridged nucleic acid analogue. J Am Chem Soc 2008; 130:4886-96. [PMID: 18341342 DOI: 10.1021/ja710342q] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The novel bridged nucleic-acid analogue 2',4'-BNA(NC) (2'-O,4'-C-aminomethylene bridged nucleic acid), containing a six-membered bridged structure with an N-O linkage, was designed and synthesized efficiently, demonstrating a one-pot intramolecular NC bond-forming key reaction to construct a perhydro-1,2-oxazine ring (11 and 12). Three monomers of 2',4'-BNA(NC) (2',4'-BNA(NC)[NH], [NMe], and [NBn]) were synthesized and incorporated into oligonucleotides, and their properties were investigated and compared with those of 2',4'-BNA (LNA)-modified oligonucleotides. Compared to 2',4'-BNA (LNA)-modified oligonucleotides, 2',4'-BNA(NC) congeners were found to possess: (i) equal or higher binding affinity against an RNA complement with excellent single-mismatch discriminating power, (ii) much better RNA selective binding, (iii) stronger and more sequence selective triplex-forming characters, and (iv) immensely higher nuclease resistance, even higher than the S(p)-phosphorthioate analogue. 2',4'-BNA(NC)-modified oligonucleotides with these excellent profiles show great promise for applications in antisense and antigene technologies.
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Affiliation(s)
- S M Abdur Rahman
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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Yang H, Sleiman H. Templated Synthesis of Highly Stable, Electroactive, and Dynamic Metal–DNA Branched Junctions. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200703741] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Yang H, Sleiman H. Templated Synthesis of Highly Stable, Electroactive, and Dynamic Metal–DNA Branched Junctions. Angew Chem Int Ed Engl 2008; 47:2443-6. [DOI: 10.1002/anie.200703741] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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