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López-Tena M, Farrera-Soler L, Barluenga S, Winssinger N. Pseudo-Complementary G:C Base Pair for Mixed Sequence dsDNA Invasion and Its Applications in Diagnostics (SARS-CoV-2 Detection). JACS AU 2023; 3:449-458. [PMID: 36873687 PMCID: PMC9975836 DOI: 10.1021/jacsau.2c00588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 01/18/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
Pseudo-complementary oligonucleotides contain artificial nucleobases designed to reduce duplex formation in the pseudo-complementary pair without compromising duplex formation to targeted (complementary) oligomers. The development of a pseudo-complementary A:T base pair, Us:D, was important in achieving dsDNA invasion. Herein, we report pseudo-complementary analogues of the G:C base pair leveraged on steric and electrostatic repulsion between the cationic phenoxazine analogue of cytosine (G-clamp, C+) and N-7 methyl guanine (G+), which is also cationic. We show that while complementary peptide nucleic acids (PNA) form a much more stable homoduplex than the PNA:DNA heteroduplex, oligomers based on pseudo-C:G complementary PNA favor PNA:DNA hybridization. We show that this enables dsDNA invasion at physiological salt concentration and that stable invasion complexes are obtained with low equivalents of PNAs (2-4 equiv). We harnessed the high yield of dsDNA invasion for the detection of RT-RPA amplicon using a lateral flow assay (LFA) and showed that two strains of SARS-CoV-2 can be discriminated owing to single nucleotide resolution.
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2
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Bando T, Sugiyama H. Epigenetic Drug Discovery by Artificial Genetic Switches. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Hiroshi Sugiyama
- Department of Chemistry, Graduate School of Science Kyoto University
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3
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Muangkaew P, Vilaivan T. Modulation of DNA and RNA by PNA. Bioorg Med Chem Lett 2020; 30:127064. [PMID: 32147357 DOI: 10.1016/j.bmcl.2020.127064] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 02/22/2020] [Accepted: 02/24/2020] [Indexed: 02/08/2023]
Abstract
Peptide nucleic acid (PNA), a synthetic DNA mimic that is devoid of the (deoxy)ribose-phosphate backbone yet still perfectly retains the ability to recognize natural nucleic acids in a sequence-specific fashion, can be employed as a tool to modulate gene expressions via several different mechanisms. The unique strength of PNA compared to other oligonucleotide analogs is its ability to bind to nucleic acid targets with secondary structures such as double-stranded and quadruplex DNA as well as RNA. This digest aims to introduce general readers to the advancement in the area of modulation of DNA/RNA functions by PNA, its current status and future research opportunities, with emphasis on recent progress in new targeting modes of structured DNA/RNA by PNA and PNA-mediated gene editing.
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Affiliation(s)
- Penthip Muangkaew
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Patumwan, Bangkok 10330, Thailand
| | - Tirayut Vilaivan
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Patumwan, Bangkok 10330, Thailand.
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4
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Heinrich B, Vázquez O. 4-Methyltrityl-Protected Pyrrole and Imidazole Building Blocks for Solid Phase Synthesis of DNA-Binding Polyamides. Org Lett 2020; 22:533-536. [PMID: 31904984 DOI: 10.1021/acs.orglett.9b04288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
DNA-binding polyamides are synthetic oligomers of pyrrole/imidazole units with high specificity and affinity for double-stranded DNA. To increase their synthetic diversity, we report a mild methodology based on 4-methyltrityl (Mtt) solid phase peptide synthesis (SPPS), whose building blocks are more accessible than the standard Fmoc and Boc SPPS ones. We demonstrate the robustness of the approach by preparing and studying a hairpin with all precursors. Importantly, our strategy is orthogonal and compatible with sensitive molecules and could be readily automated.
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Affiliation(s)
- Benedikt Heinrich
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Straße 4 , 35043 Marburg , Germany
| | - Olalla Vázquez
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Straße 4 , 35043 Marburg , Germany
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5
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Yu Z, Pandian GN, Hidaka T, Sugiyama H. Therapeutic gene regulation using pyrrole-imidazole polyamides. Adv Drug Deliv Rev 2019; 147:66-85. [PMID: 30742856 DOI: 10.1016/j.addr.2019.02.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 11/22/2018] [Accepted: 02/04/2019] [Indexed: 12/13/2022]
Abstract
Recent innovations in cutting-edge sequencing platforms have allowed the rapid identification of genes associated with communicable, noncommunicable and rare diseases. Exploitation of this collected biological information has facilitated the development of nonviral gene therapy strategies and the design of several proteins capable of editing specific DNA sequences for disease control. Small molecule-based targeted therapeutic approaches have gained increasing attention because of their suggested clinical benefits, ease of control and lower costs. Pyrrole-imidazole polyamides (PIPs) are a major class of DNA minor groove-binding small molecules that can be predesigned to recognize specific DNA sequences. This programmability of PIPs allows the on-demand design of artificial genetic switches and fluorescent probes. In this review, we detail the progress in the development of PIP-based designer ligands and their prospects as advanced DNA-based small-molecule drugs for therapeutic gene modulation.
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6
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Yu Z, Hsieh WC, Asamitsu S, Hashiya K, Bando T, Ly DH, Sugiyama H. Orthogonal γPNA Dimerization Domains Empower DNA Binders with Cooperativity and Versatility Mimicking that of Transcription Factor Pairs. Chemistry 2018; 24:14183-14188. [PMID: 30003621 PMCID: PMC9724550 DOI: 10.1002/chem.201801961] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 06/26/2018] [Indexed: 12/21/2022]
Abstract
Synthetic molecules capable of DNA binding and mimicking cooperation of transcription factor (TF) pairs have long been considered a promising tool for manipulating gene expression. Our previously reported Pip-HoGu system, a programmable DNA binder pyrrole-imidazole polyamides (PIPs) conjugated to host-guest moiety, defined a general framework for mimicking cooperative TF pair-DNA interactions. Here, we supplanted the cooperation modules with left-handed (LH) γPNA modules: i.e., PIPs conjugated with nucleic acid-based cooperation system (Pip-NaCo). LH γPNA was chosen because of its bioorthogonality, sequence-specific interaction, and high binding affinity toward the partner strand. From the results of the Pip-NaCo system, cooperativity is highly comparable to the natural TF pair-DNA system, with a minimum energetics of cooperation of -3.27 kcal mol-1 . Moreover, through changing the linker conjugation site, binding mode, and the length of γPNAs sequence, the cooperative energetics of Pip-NaCo can be tuned independently and rationally. The current Pip-NaCo platform might also have the potential for precise manipulation of biological processes through the construction of triple to multiple heterobinding systems.
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Affiliation(s)
- Zutao Yu
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Wei-Che Hsieh
- Institute for Biomolecular Design and Discovery (IBD), Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania, 15213, USA
| | - Sefan Asamitsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Kaori Hashiya
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Toshikazu Bando
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Danith H Ly
- Institute for Biomolecular Design and Discovery (IBD), Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania, 15213, USA
| | - Hiroshi Sugiyama
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto, 606-8502, Japan
- Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
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7
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Sun M, Xu L, Qu A, Zhao P, Hao T, Ma W, Hao C, Wen X, Colombari FM, de Moura AF, Kotov NA, Xu C, Kuang H. Site-selective photoinduced cleavage and profiling of DNA by chiral semiconductor nanoparticles. Nat Chem 2018; 10:821-830. [DOI: 10.1038/s41557-018-0083-y] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Accepted: 05/15/2018] [Indexed: 12/14/2022]
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8
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Yu Z, Guo C, Wei Y, Hashiya K, Bando T, Sugiyama H. Pip-HoGu: An Artificial Assembly with Cooperative DNA Recognition Capable of Mimicking Transcription Factor Pairs. J Am Chem Soc 2018; 140:2426-2429. [DOI: 10.1021/jacs.7b13275] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Zutao Yu
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Chuanxin Guo
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Yulei Wei
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Kaori Hashiya
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Toshikazu Bando
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Hiroshi Sugiyama
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
- Institute for Integrated Cell-Material Sciences
(WPI-iCeMS), Kyoto University, Sakyo, Kyoto 606-8501, Japan
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9
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Kawamoto Y, Bando T, Sugiyama H. Sequence-specific DNA binding Pyrrole-imidazole polyamides and their applications. Bioorg Med Chem 2018; 26:1393-1411. [PMID: 29439914 DOI: 10.1016/j.bmc.2018.01.026] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 01/25/2018] [Accepted: 01/28/2018] [Indexed: 12/25/2022]
Abstract
Pyrrole-imidazole polyamides (Py-Im polyamides) are cell-permeable compounds that bind to the minor groove of double-stranded DNA in a sequence-specific manner without causing denaturation of the DNA. These compounds can be used to control gene expression and to stain specific sequences in cells. Here, we review the history, structural variations, and functional investigations of Py-Im polyamides.
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Affiliation(s)
- Yusuke Kawamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Toshikazu Bando
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
| | - Hiroshi Sugiyama
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan; Institute for Integrated Cell-Material Science (iCeMS), Kyoto University, Sakyo, Kyoto 606-8501, Japan.
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10
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Applications of PNA-Based Artificial Restriction DNA Cutters. Molecules 2017; 22:molecules22101586. [PMID: 28934140 PMCID: PMC6151779 DOI: 10.3390/molecules22101586] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Revised: 09/16/2017] [Accepted: 09/18/2017] [Indexed: 12/14/2022] Open
Abstract
More than ten years ago, artificial restriction DNA cutters were developed by combining two pseudo-complementary peptide nucleic acid (pcPNA) strands with either Ce(IV)/EDTA or S1 nuclease. They have remarkably high site-specificity and can cut only one predetermined site in the human genome. In this article, recent progress of these man-made tools have been reviewed. By cutting the human genome site-selectively, desired fragments can be clipped from either the termini of chromosomes (telomeres) or from the middle of genome. These fragments should provide important information on the biological functions of complicated genome system. DNA/RNA hybrid duplexes, which are formed in living cells, are also site-selectively hydrolyzed by these cutters. In order to further facilitate the applications of the artificial DNA cutters, various chemical modifications have been attempted. One of the most important successes is preparation of PNA derivatives which can form double-duplex invasion complex even under high salt conditions. This is important for in vivo applications, since the inside of living cells is abundant of metal ions. Furthermore, site-selective DNA cutters which require only one PNA strand, in place of a pair of pcPNA strands, are developed. This progress has opened a way to new fields of PNA-based biochemistry and biotechnology.
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11
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Komiyama M, Yoshimoto K, Sisido M, Ariga K. Chemistry Can Make Strict and Fuzzy Controls for Bio-Systems: DNA Nanoarchitectonics and Cell-Macromolecular Nanoarchitectonics. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20170156] [Citation(s) in RCA: 238] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Makoto Komiyama
- World Premier International (WPI) Research Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044
- Life Science Center of Tsukuba Advanced Research Alliance, University of Tsukuba, 1-1-1 Ten-noudai, Tsukuba, Ibaraki 305-8577
| | - Keitaro Yoshimoto
- Department of Life Sciences, Graduate School of Arts and Science, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902
| | - Masahiko Sisido
- Professor Emeritus, Research Core for Interdisciplinary Sciences, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530
| | - Katsuhiko Ariga
- World Premier International (WPI) Research Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-0827
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12
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Taskova M, Mantsiou A, Astakhova K. Synthetic Nucleic Acid Analogues in Gene Therapy: An Update for Peptide-Oligonucleotide Conjugates. Chembiochem 2017; 18:1671-1682. [PMID: 28614621 DOI: 10.1002/cbic.201700229] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Indexed: 12/29/2022]
Abstract
The main objective of this work is to provide an update on synthetic nucleic acid analogues and nanoassemblies as tools in gene therapy. In particular, the synthesis and properties of peptide-oligonucleotide conjugates (POCs), which have high potential in research and as therapeutics, are described in detail. The exploration of POCs has already led to fruitful results in the treatment of neurological diseases, lung disorders, cancer, leukemia, viral, and bacterial infections. However, delivery and in vivo stability are the major barriers to the clinical application of POCs and other analogues that still have to be overcome. This review summarizes recent achievements in the delivery and in vivo administration of synthetic nucleic acid analogues, focusing on POCs, and compares their efficiency.
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Affiliation(s)
- Maria Taskova
- Nucleic Acid Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Anna Mantsiou
- Nucleic Acid Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Kira Astakhova
- Nucleic Acid Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark.,Technical University of Denmark, Department of Chemistry, Kemitorvet, 2800, Kongens Lyngby, Denmark
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13
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Pandian GN, Sugiyama H. Nature-Inspired Design of Smart Biomaterials Using the Chemical Biology of Nucleic Acids. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20160062] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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14
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Wirth-Hamdoune D, Ullrich S, Scheffer U, Radanović T, Dürner G, Göbel MW. A Bis(guanidinium)alcohol Attached to a Hairpin Polyamide: Synthesis, DNA Binding, and Plasmid Cleavage. Chembiochem 2016; 17:506-14. [DOI: 10.1002/cbic.201500566] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Indexed: 01/20/2023]
Affiliation(s)
- Daniela Wirth-Hamdoune
- Institut für Organische Chemie und Chemische Biologie; Johann Wolfgang Goethe-Universität Frankfurt; Max-von-Laue-Strasse 7 60438 Frankfurt am Main Germany
| | - Stefan Ullrich
- Institut für Organische Chemie und Chemische Biologie; Johann Wolfgang Goethe-Universität Frankfurt; Max-von-Laue-Strasse 7 60438 Frankfurt am Main Germany
| | - Ute Scheffer
- Institut für Organische Chemie und Chemische Biologie; Johann Wolfgang Goethe-Universität Frankfurt; Max-von-Laue-Strasse 7 60438 Frankfurt am Main Germany
| | - Toni Radanović
- Institut für Organische Chemie und Chemische Biologie; Johann Wolfgang Goethe-Universität Frankfurt; Max-von-Laue-Strasse 7 60438 Frankfurt am Main Germany
| | - Gerd Dürner
- Institut für Organische Chemie und Chemische Biologie; Johann Wolfgang Goethe-Universität Frankfurt; Max-von-Laue-Strasse 7 60438 Frankfurt am Main Germany
| | - Michael W. Göbel
- Institut für Organische Chemie und Chemische Biologie; Johann Wolfgang Goethe-Universität Frankfurt; Max-von-Laue-Strasse 7 60438 Frankfurt am Main Germany
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15
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Qiao H, Ma C, Zhang X, Jing X, Li C, Zhao Y. Insight into DNA Minor Groove Unspecific Binding of Pyrrole Polyamide. Bioconjug Chem 2015; 26:2054-61. [PMID: 26301419 DOI: 10.1021/acs.bioconjchem.5b00309] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chemistry-based approaches have exploited base-pairing for sequence-specific recognition of DNA. A variety of sequence-specific Py-Im hairpin polyamides to target sequences of biological interest have been widely developed. Here we reported that an eight-ring N-methylpyrrole polyamide can induce a strong negative signal when it interacted with ct-DNA in the minor groove, which differs from the typical CD signal induced by hairpin polyamide reported previously. Our current efforts mainly focused on investigating possible reasons and binding mode by CD spectroscopy, singular value decomposition, and atomic force microscopy. The results suggested that partly compacted DNA may form due to the unfolded binding mode that made DNA shrink along the axis of duplex. In addition, this unfolded binding was remarkably restrained in high ionic strength medium where the neutralized phosphate groups in the DNA backbone narrowed the minor groove. The present work might help to understand deeply how the Py-Im polyamides bind to duplex DNA under different conditions and, in particular, be applied to gene manipulation and expression.
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Affiliation(s)
- Hongwei Qiao
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry of Tsinghua University, Beijing 100084, P. R. China
| | - Chunying Ma
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029 Beijing, P. R. China
| | - Xiao Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029 Beijing, P. R. China
| | - Xi Jing
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029 Beijing, P. R. China
| | - Chao Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029 Beijing, P. R. China
| | - Yufen Zhao
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry of Tsinghua University, Beijing 100084, P. R. China
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16
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Yang JW, Lin YL, Dong C, Zhou CQ, Chen JX, Wang B, Zhou ZZ, Sun B, Chen WH. Synthesis, hydrolytic DNA-cleaving activities and cytotoxicities of EDTA analogue-tethered pyrrole-polyamide dimer-based Ce(IV) complexes. Eur J Med Chem 2014; 87:168-74. [PMID: 25247773 DOI: 10.1016/j.ejmech.2014.09.057] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 09/16/2014] [Accepted: 09/17/2014] [Indexed: 12/31/2022]
Abstract
Two EDTA analogue-tethered C2-symmetrical dimeric monopyrrole-polyamide 5 and dipyrrole-polyamide 6, and their corresponding Ce(IV) complexes Ce-5 and Ce-6 were synthesized and fully characterized. Agarose gel electrophoresis studies on pBR322 DNA cleavage indicate that complexes Ce-5 and Ce-6 exhibited potent DNA-cleaving activities under physiological conditions. The maximal first-order rate constants (kmax's) were (0.42 ± 0.02) h(-1) for Ce-5 and (0.52 ± 0.02) h(-1) for Ce-6, respectively, suggesting that both complexes catalyzed the cleavage of supercoiled DNA by up to approximately 10(8)-fold. Complex Ce-6 exhibited ca 10-fold higher overall catalytic activity (kmax/KM) than Ce-5, which may be ascribed to its higher DNA-binding affinity. Inhibition experiments and a model study convincingly suggest that both complexes Ce-5 and Ce-6 functioned as hydrolytic DNA-cleavers. In addition, both complexes were found to display moderate inhibitory activity toward A549 and HepG-2 cells.
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Affiliation(s)
- Jian-Wei Yang
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Yan-Ling Lin
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Cheng Dong
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Chun-Qiong Zhou
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China.
| | - Jin-Xiang Chen
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Bo Wang
- School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Zhong-Zhen Zhou
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Bin Sun
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Wen-Hua Chen
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China.
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17
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From Traditional Drug Design to Catalytic Metallodrugs: A Brief History of the Use of Metals in Medicine. ACTA ACUST UNITED AC 2014. [DOI: 10.2478/medr-2014-0002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AbstractTraditional drug design has been effective in the development of therapies for a variety of disease states but there is a need for new approaches that will tackle new challenges and complement current paradigms. The use of metals in medicine has resulted in several successes and allows for the introduction of properties that cannot be achieved by use of organic compounds alone, but also introduces new challenges that can be addressed by a careful understanding of the principles of inorganic chemistry. Toward this end, the unique structural and coordination chemistry, as well as the reactivity of metals, has been used to design novel classes of therapeutic and diagnostic agents. This review briefly summarizes progress in the field of therapeutics, from the earliest use of metals to more recent efforts to design catalytic metallodrugs that promote the irreversible inactivation of therapeutically relevant targets.
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